An assembly contains a disconnecting device for a surge-arresting device. A first contact and a second contact of the disconnecting device are connected by a first path having a switching element which can be thermally tripped. A second path is disposed electrically in parallel with the first path. An impedance element is disposed in the second path. A spark gap is disposed in the first path.
A method of operating a combustion system (16) for a gas turbine (10), the combustor system (16) comprises a main fuel supply (72, 73), a pilot fuel supply (74), a combustion chamber (38). The method comprises the steps supplying a first fuel flow through the5 main fuel supply (72) and the pilot fuel supply (74), monitoring a composition of the first fuel, monitoring combustion instability, reducing the first fuel flow through the pilot fuel supply (74) to zero when the first fuel composition has a) a hydrogen content = 5% by volume and/or b) a high-HC content = 5% by volume and the combustion instability < a predetermined value.
A method of controlling a combustor of a gas turbine engine is disclosed. The method comprising the steps supplying a total fuel quantity to the combustor dependent on a load of the gas turbine engine, the total fuel quantity is split into a pilot fuel quantity and a main fuel quantity via a pilot fuel split, monitoring at least one signal of at least one condition of the gas turbine engine, generating a steady state value of the at least one signal indicative of a steady state of the gas turbine engine, detecting a change in the at least one signal from the steady-state value. When the change in the at least one signal from the steady state value exceeds a predetermined limit, the method applies the steps generating a transient split offset for the pilot fuel split from a look-up table and applying the transient split offset to the pilot fuel split while maintaining the total fuel quantity being supplied at any point in time.
A method of controlling a combustor of a gas turbine engine, the method comprising the steps supplying a total fuel quantity to the combustor dependent on a load of the gas turbine engine, the total fuel quantity is split into a pilot fuel quantity and a main fuel quantity via a scheduled pilot fuel split, the pilot fuel split is the percentage of the pilot fuel quantity of the total fuel quantity, monitoring combustion instability, applying a steady state active pilot split offset to the scheduled pilot fuel split when a predetermined temperature of the combustor is exceeded and/or a predetermined value of combustion instability is exceeded to create a steady state pilot fuel split, monitoring a condition of the gas turbine engine that influences an air / fuel ratio in the combustor, disabling the steady state active pilot split offset when the condition of the gas turbine engine is indicative of a transient condition and when a threshold value of combustion instability is exceeded, and applying a transient active pilot split offset to the steady state pilot fuel split while maintaining the total fuel quantity being supplied at any point in time, the transient active pilot split offset and the steady state active pilot split offset result in a total split offset, the total split offset being greater than the steady state active pilot split offset and the rate of change of the transient active pilot split offset is faster than the rate of change of the steady state active pilot split offset.
The invention relates to a method for operating an electrolysis device (2) for decomposition of water at both high and low ambient temperatures. The method comprises the following steps: - providing at least one electrolysis unit (3), comprising at least one electrolytic cell, having at least one inlet opening (6) for a first reactant stream (4) and having at least one outlet opening (8) for a first product stream, - producing the first product stream (P) from the first reactant stream (4) in the electrolysis unit (3), - separating the product stream (P) into a water stream (W) and a gas stream (G), - cooling the water stream (W) by introducing it into at least one cooling device (20) in which the heat of the water stream (W) is dissipated directly to the environment, the cooling device being arranged in an oblique position, - interrupting the cooling of the water stream (W) if the electrolysis unit (3) is switched off or if the electrolysis unit (3) is in standby mode, and - registering the ambient temperature and, if the ambient temperature is below 1°, emptying the water stream (W) from the cooling device (20) into a liquid reservoir.
A device and method for determining the purity of hydrogen, includes a measurement fuel cell cascade having at least one measurement fuel cell, a hydrogen inlet and a hydrogen outlet, a cell voltage monitoring unit that is electrically connected to the measurement fuel cell stack and monitors a voltage output of the measurement fuel cell stack, and a valve located downstream of the measurement fuel cell cascade in the direction of flow of the hydrogen for allowing dead-end operation of the measurement fuel cell cascade. The device for determining the purity of hydrogen further includes an evaluation unit that is connected to the cell voltage monitoring unit and receives a signal corresponding to a voltage output of the measurement fuel cell cascade from the cell voltage monitoring unit as a function of time, wherein the evaluation unit is designed to determine the purity of the hydrogen from the received signal.
A computer-implemented method for detecting an oil leak in a beam pump, wherein, during pumping movement of the rod linkage through the wellhead, a stroke region is formed, the method including a) capturing images of an image sequence containing at least the stroke region of the rod linkage, b) detecting soiling in the stroke region of the rod linkage in comparison with a known clean state for an image in question of the image sequence, c) ascertaining the position of the detected soiling for an image in question of the image sequence by the associated position of the rod linkage, d) determining the change in the soiling at the ascertained position over at least one pumping cycle from the images of the image sequence, e) checking if the change in the soiling exceeds a predefined limit value, and if applicable, outputting a warning of an oil leak.
The invention relates to an electrolysis device (10) having at least one electrolytic cell (12) and an electrolysis energy source (14) connected to the at least one electrolytic cell (12). The invention also relates to a method for operating an electrolysis device (10), in which an electrical electrolysis current (48) is applied to at least one electrolytic cell (12) of the electrolysis device (10) during normal operation in order to perform electrolysis of a substance located in a reaction chamber of the electrolytic cell (12), and in which the electrical electrolysis current (48) is detected by means of a sensor unit (46). The aim of the invention is to improve the safety of an electrolysis device (10) or of an electrolytic cell (12) and to improve the operation thereof outside the normal electrolysis operation. According to the invention, a protective voltage (US) is applied to the at least one electrolytic cell (12) according to the detected electrical electrolysis current (48), which protective voltage is provided individually for the at least one electrolytic cell (12).
The invention relates to a computer-implemented method for determining an operational property of a drill-rod borehole pump (1). A load-distance diagram with curve points for the pump (1) is ascertained by an analysis device (140) using a detection means (130) and is provided as an operational load-distance diagram (DC1-DC5) with operational curve points, wherein in a training mode, a load-distance diagram model for the pump with model curve points is generated and trained on the basis of machine learning, at least two specified analysis regions (Q1- Q4) are determined in the load-distance diagram model, and a reference point (C21-C24, C31-C36, C41-C48, C51-C58) is ascertained from the model curve points of at least one region; and in an operating mode for the operational load-distance diagram, a check is carried out to determine whether the at least one reference point is contained within the surface contained by the operational curve points, and if so, the operational property of the conveyor pump is determined therefrom.
A computer-implemented method for determining an operating property of a pumpjack (1), wherein the pump (1) has a pump head (110, 111) that is connected to a kinematic converter (120) via a rod (5, 10), and the kinematic converter (120) is driven during operation by a motor (3), and a load-travel characteristic curve with curve points for the pump (1) is ascertained by an analysis device (140) using an acquisition means (130) and is provided in the form of an operating load-travel characteristic curve (DC1-DC5) with operating curve points, wherein the analysis device (140), in a training mode, provides at least one model load-travel characteristic curve with respective model curve points that is normalized to a predefined reference variable, and at least two subsets of the model curve points are acquired as a first and at least one second feature on the basis of machine learning, and the first and the at least one second feature are generated and trained with a k-means algorithm in the form of at least one random forest model and, in an operating mode, the operating curve points are normalized to the reference variable and a check is performed as to whether there is similarity between at least one subset of the operating curve points and the at least one random forest model, and if so, the operating property of the pump (1) is determined therefrom.
The invention relates to a computer-implemented method for determining an operational property of a drill-rod borehole pump (1). The pump (1) has a pump head (110, 111) which is connected to a kinematic converter (120) via a drill rod (5, 10), and the kinematic converter (120) is driven by a motor (3) during operation. A load-distance diagram with curve points for the pump (1) is ascertained by an analysis device (140) using a detection means (130) and is provided as an operational load-distance diagram (DC1-DC5) with operational curve points, wherein in a training mode, at least one model load-distance diagram with respective model curve points is provided by the analysis device (140), said model load-distance diagram being normalized to a specified reference variable, and for at least one sub-quantity of the model curve points, a model is generated and trained on the basis of a Kohonen network with elliptical Fourier descriptors; and in an operating mode, the operational curve points are normalized to the reference variable, elliptical Fourier descriptors are determined for the operational curve points, and a check is carried out to determine whether a similarity exists between the elliptical Fourier descriptors of the operational curve points and the model of the Kohonen network, and if so, the operational property of the pump (1) is determined therefrom.
A combustor (36) for a gas turbine, the combustor (36) comprising a combustor axis (44) about which is arranged in flow sequence a radial swirler (40), a pre-chamber (42) and a combustion chamber (38). The radial swirler (40) comprises a base plate (45), an annular array of swirler vanes (46), defining swirler slots (47), arranged around the base plate (45), a main fuel injector (48A, 48B) for injecting a main fuel and a pilot fuel injector (50) for injecting a pilot fuel. The combustor comprises a premixer nozzle (70) located on the combustion chamber (38). The premixer nozzle (70) comprising a housing (78), an array of tubes (80) within the housing (78) and a first fuel gallery (72) for supplying a first fuel (83). Each tube (80) of the array of tubes (80) comprising an inlet (86), an outlet (88), a first aperture (90) and a second aperture (92). The first fuel gallery (72) is arranged to supply the first fuel (83) to the first aperture (90) and / or the second aperture (92). In use, air (34) is supplied to the combustor and a first portion of the air (34A) passes through the radial swirler (40) and a second portion of the air (34B) passes through the tubes (80) of the array of tubes (80) from inlet (86) to outlet (88) and mixes with the first fuel (83) that passes through the first aperture (90) and / or the second aperture (92).
The invention relates to an optical waveguide (5) for a magneto-optical current sensor (1). The optical waveguide (5) comprises a first end surface (21), through which light can be coupled into the optical waveguide (5), and a second end surface (24), through which light can be coupled out of the optical waveguide (5), wherein at least one of the two end surfaces (21, 24) has an anti-reflective coating (31, 32).
The invention relates to a microlens arrangement (9) and to a micro-optical device (1) comprising such a microlens arrangement (9). The microlens arrangement (9) comprises a microlens (15) and a lens holder (17) for the microlens (15), wherein the lens holder (17) has a holding tube (19) that has a tube slot (21), and the microlens (15) is arranged within the holding tube (19).
The invention relates to a current transformer (1) comprising a head tank (2) and a head tank cover (3), both comprising or consisting of an electrically conductive material, at least one primary winding (4) for conducting a current to be measured, the primary winding (4) comprising at least one primary bar (4.1), and a secondary winding (5) wound around the at least one primary bar (4.1), the primary and secondary windings (4, 5) arranged within a cavity defined within the head tank (2) and head tank cover (3) arranged on the head tank (2), wherein an upper flange (9) of the head tank (2) is configured for fluid tightly sealing against a cover flange (18) of the head tank cover (3), wherein the head tank (2) and the head tank cover (3) respectively comprise a primary terminal (12, 19) for electrically contacting the primary winding (4), wherein one or more connection points (13, 23) are provided within the head tank (2) and within the head tank cover (3), respectively, to electrically connect a respective end of the primary winding (4) to the head tank (2) or to the head tank cover (3), wherein an electrically insulating ring (24) is arranged between the cover flange (18) and the upper flange (9).
The invention relates to a magneto-optic current transformer (1) for measuring a current intensity of an electric current in an electrical conductor (2). The current transformer (1) comprises two light-guide units (5, 6), each with an input polarizer (17, 18), an output polarizer (19, 20) and a light guide (21, 22) arranged between the input polarizer (17, 18) and the output polarizer (19, 20). Further, the current transformer (1) comprises a light-supply device (3) which is configured to supply light to the light-guide units (5, 6) on the input side, and an analysis device (7) which is configured to measure a luminous intensity of light output by the light-guide unit (5, 6) at the output side for each light-guide unit (5, 6) and to ascertain the current intensity of the electric current through the electrical conductor (2) from the measured luminous intensities. A polarization axis of the output polarizer (19, 20) of each light-guide unit (5, 6) is rotated through a polarization angle in relation to a polarization axis of the input polarizer (17, 18) of the light-guide unit (5, 6) and the polarization angles of the two light-guide units (5, 6) differ from one another.
A premixer injector assembly in a gas turbine engine includes at least one premixer injector. The premixer injector includes a fuel tube having a fuel feed passage enclosed by an outer surface, a plurality of fins coupled to the fuel tube extending from the outer surface of the fuel feed passage, the outer surface of the fuel feed passage between adjacent fins having a concave shape, a plurality of mixing channels defined between adjacent fins, a plurality of fuel injection apertures disposed along the fuel feed passage to direct fuel from the fuel feed passage to the mixing channels, an air tube coupled to the fuel tube to at least partially enclose the fuel tube, and a plurality of air injection openings arranged along the air tube to inject air to the mixing channels.
The present invention relates to a method for partial discharge recognition in high voltage applications and a high voltage unit using the method, comprising the steps detecting a signal, transforming the signal from time to frequency domain, cutting frequencies above a defined threshold, and retransform the truncated signal from frequency to time domain. The information content of detected and truncated signals is determined and compared.
The present invention relates to a high voltage instrument transformer (1), with measuring assembly (3, 4) and isolator (5), and with at least one sensor (9) for partial discharge measurements. A method for partial discharge recognition in high voltage instrument transformers (1) according to the present invention comprises a detection of a signal from at least one sensor (9) for partial discharge measurements, particularly a Transient Earth Voltage sensor.
There is provided a method and a device for producing CO from CO2, wherein the reaction proceeds via a formate of the formula HNRiR2H+ HCO2- and/or an amide of the formula HCONR1R2, Ri and R2 being the same or different and being selected from hydrogen and substituted and unsubstituted alkyl groups having 1 to 20 C atoms.
High-voltage Feedthrough, and Electrical High-voltage Device with High-voltage Feedthrough The invention relates to a high-voltage feedthrough (10) having an inner conductor (13), which is fed through an insulating body (11) and the first axial end of which is provided for connecting to an electrical conductor of an electrical high- voltage device and the second axial end of which is provided for connecting to a further electrical line, a housing (16), which at least partially encloses the insulating body on the outside, as well as having a fixing flange (20) for fixing the high-voltage feedthrough to a wall of the high-voltage device. The invention is characterized by a protective device (21) for a thermal protection of the high-voltage feedthrough, wherein the protective device comprises a shield cover (22) which at least partially encloses the housing and/or the fixing flange from the outside. The invention further relates to a high- voltage device (1) having the high-voltage feedthrough according to the invention.
The invention relates to a method for arranging an electrochemically active element (10) on a fastening device which has a first holder (12) with at least one cylindrical spacing element (16) and has a second holder (14) with at least one cylindrical spacing element (18), comprising at least the steps: a) providing an electrochemically active element (10) whose electrolyte side (20) can be arranged to adjoin an electrolyte chamber (24) and whose gas side (22) can be arranged to adjoin a gas chamber (26) of an electrochemical cell; b) arranging the at least one spacing element (16) of the first holder (12) on the gas side (22) and arranging the at least one spacing element (18) of the second holder (14) on the electrolyte side of the electrochemically active element (10), the at least one spacing element (18) on the electrolyte side (20) being aligned axially with respect to the at least one spacing element (16) on the gas side (22). The invention furthermore relates to an electrochemical cell (30) in which an electrochemically active element (10) is arranged on a fastening device.
The invention relates to methods for protecting an electrolysis stack from corrosion, a method for transporting an electrolysis stack, and an electrolysis stack.
An auxetic (NPR) structure includes a plurality of vertical intersecting dimpled sheets, each dimpled sheet exhibiting a negative Poisson's ratio, each dimpled sheet intersects two adjacent dimpled sheets creating a rectangular tubular structure, and having a portion of each dimpled sheet projecting outward from its intersection with an adjacent dimpled sheet, the amplitude of each dimple on the plurality of dimpled sheets is such that no overhanging surface of the dimpled sheet exceeds an angle threshold for printability without support structures.
B33Y 80/00 - Products made by additive manufacturing
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/40 - Structures for supporting workpieces or articles during manufacture and removed afterwards
An anode-side half cell for an electrochemical cell of an electrolytic apparatus for carbon dioxide electrolysis and/or carbon monoxide electrolysis, having a separator in the form of a diaphragm, which has an anode-side separator surface and a cathode-side separator surface opposite the anode-side separator surface; a catalyst layer, which has a first catalyst surface and a second catalyst surface opposite the first catalyst surface, the first catalyst surface facing the anode-side separator surface; and a fluid-permeable anode plate, which has a first anode surface, the first anode surface facing the second catalyst surface.
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
C25B 9/77 - Assemblies comprising two or more cells of the filter-press type having diaphragms
The invention relates to an electrolysis system for electrochemically breaking down water to form hydrogen and oxygen, comprising at least one electrolyser for electrochemically breaking down water to form hydrogen and oxygen. The electrolysis system also comprises a housing device for receiving the electrolyser, wherein the electrolyser is at least partially arranged in the housing device and the housing device is sealed relative to a first fluid surrounding the housing device. In the electrolyser, water is broken down to form hydrogen and oxygen. The hydrogen and the oxygen are directed out of the housing device.
An electrolysis system for breaking down water into hydrogen and oxygen using at least two electrolysis modules, each electrolysis module having at least two electrolytic cells, an electrolytic cell having an anode compartment and a cathode compartment, the anode compartment being separated from the cathode compartment by a proton exchange membrane, and a switching device, which is compatible with direct current, being arranged electrically in parallel with at least one electrolysis module. The electrolysis system is operated by the at least two electrolysis modules. When the available electrical power decreases, at least one switching device is closed. At least one electrolysis module is bridged by the switching device. The number of electrolysis modules which are then operated is reduced by the number of bridged electrolysis modules. When the available electrical power increases, at least one switching device is opened.
A method of disassembling a rotor module (30) of a gas turbine engine (10). The gas turbine engine (10) comprising a rotor output shaft (92). The rotor module (30) comprising a centre-bolt (84), a sleeve (90), at least one rotor stage (56, 58), at least one stator stage (48, 50), a casing (46) and an axis (26). The method comprising the steps: attaching a fixture (102) to the at least one rotor stage (56, 58), attaching the fixture (102) to the casing (46), detaching the centre-bolt (84) from the at least one rotor stage (56, 58), detaching the sleeve (90) from the output shaft (92), attaching the fixture (102) to the sleeve (90), and removing the rotor module (30) and fixture (102) from the rotor output shaft (92). There is also presented a method of assembling the rotor module to the gas turbine engine and the apparatus used for disassembly and assembly.
87188366 ABSTRACT A radiator for cooling a transformer, preferably a power transformer, or a choke, includes a plurality of plate-shaped radiator elements which are disposed parallel to one another and through which a coolant can flow in parallel. At least one elastically deformable element is provided at least between two adjacent radiator elements and is constructed in such a way that it counteracts an expansion of the radiator elements perpendicular to the surface of the radiator elements. Plastic deformation of the walls of the radiator elements can be prevented by the elastically deformable elements. A unit including a transformer or a choke and a method for producing a radiator are also provided. Date Recue/Date Received 2020-11-12
H01F 27/14 - Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
F28D 1/03 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
F28F 3/00 - Plate-like or laminated elements; Assemblies of plate-like or laminated elements
The invention relates to an anchoring unit (1) for a system (20), said anchoring unit having at least one first insulation layer (4) and at least one second insulation layer (5). The anchoring unit furthermore comprises a support layer (6) for mechanically stabilising the insulation layers, the support layer being arranged between the first insulation layer and second insulation layer. The anchoring unit furthermore comprises at least two screws, the screws being oriented in opposition to one another, a first screw (2) being suitable for anchoring to the system and a second screw (3) being suitable for anchoring to an anchor object. A first screw head of the first screw is in direct contact with the support layer. A screw shank of the first screw is arranged at least partially in the first insulation layer. The invention also relates to a method for fastening a system to the anchoring unit and to a system unit comprising a system and anchoring unit.
F16B 1/00 - Devices for securing together, or preventing relative movement between, constructional elements or machine parts
F16M 7/00 - FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
Method for generating a photogrammetric corridor map from a set of input images by recovering a respective pose of each image, wherein a pose comprises a position and an orientation information of the underlying camera and following steps are executed: a) Receiving a set of input images, b) Defining a working set, c) Initializing an image cluster: c1) Incrementally recovering pose for images, c2) Computing a similarity transformation transforming the recovered camera positions to the corresponding input camera positions, c3) Applying the similarity transformation to the recovered camera poses in the image cluster, d) Further growing the image cluster: d1) Selecting one image from the working set that features overlap with at least one image already in the cluster, d2) Adding the image to the cluster by recovering, d3) Performing a GNSS bundle adjustment algorithm, d4) Continuing with step d1), if there remain images in the working set that feature overlap with at least one image already in the cluster; if not, continuing with step e) e) Continuing with step b) if there remain images in the working set; if not, continuing with step f), f) Generating and providing as output the corridor map using the recovered camera poses.
A cover unit for a converter head of a high-voltage converter device includes a flat, preferably planar, cover element and an RIV shielding device peripherally surrounding the cover element for shielding radio interference voltage. The RIV shielding device is formed by a plurality of RIV shielding elements distributed peripherally on the edge of the cover element. The RIV shielding elements each have a substantially cylindrical shape, in particular a capsule shape. A corresponding converter head and a corresponding high-voltage converter device are also provided.
A protection device protects an AC device, in particular an inductive voltage converter, electrically connected to an AC line, from damage caused by direct currents flowing in the AC line. In this case, at least one current transfer coil, which runs around a magnetic core section of a magnetic core, is connected to the AC line in parallel with the AC device.
H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
G01R 1/36 - Overload-protection arrangements or circuits for electric measuring instruments
H02J 3/02 - Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of ac power and of dc power
An electrolysis cell with a cell frame and to a method for producing an electrolysis cell, wherein the cell frame has a stepped inner profile. The inner profile has at least one support surface for receiving a planar component in the cell frame, and the support surface has a recess for a seal. A seal is first placed in the recess, and a membrane-electrode unit, a first gas diffusion layer, and an electrically conductive top layer are then introduced into the cell frame. The cell frame is then rotated, and a second gas diffusion layer is applied. The electrolysis cell produced in this manner includes the cell frame with the seal and the different layers.
The invention relates to a system comprising a pump (3) for conveying a flow medium, an arrangement (5) for converting the flow medium from a liquid state into a gaseous state, a turbomachine (6) for converting the thermal energy of the flow medium into mechanical work, a condenser (4) for condensing the gaseous flow medium into a liquid state, with a cooling unit (7) for cooling the liquid flow medium being arranged upstream of the pump (3) in order to reduce the compression work.
F01K 9/00 - Steam engine plants characterised by condensers arranged or modified to co-operate with the engines
F01K 25/10 - Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
36.
INSTRUMENT TRANSFORMER AND METHOD TO ISOLATE PARTS
The present invention relates to an instrument transformer (1) for high current and/or high voltage conversion, comprising a housing and at least an active part, which is electrically insulated by an isolation material. The isolation material comprises or is a paste and/or pulp (14). A method for the instrument transformer (1) comprises the filling of a housing of the instrument transformer (1) with paste and/or pulp (14), particularly with paste and/or pulp (14) comprising paper material and/or cellulose, solved in a solvent, particularly at least one ionic liquid.
The present invention relates to an instrument transformer (1) for high current and/or high voltage conversion, comprising a housing and at least an active part, which is electrically insulated by an isolation material. The isolation material comprises particles (14). A method for the instrument transformer (1) comprises the filling of a housing of the instrument transformer (1) with particles (14), particularly with particles (14) of paper material and/or cellulose, which were impregnated by an insulating fluid (10), particularly mineral oil and/or a synthetic oil, and/or ester, particularly vegetable esters.
The invention relates to a method for generating an inductive reactive power (QIND) for a public grid (14) by means of an electrical load apparatus (12), in which, in a first operating mode of the electrical load apparatus (12), an alternating current of the public grid (14) is transformed by means of a transformer device (18) and the transformed alternating current is provided for an electrical load (28) of the electrical load apparatus (12), wherein, in a second operating mode of the electrical load apparatus (12) that is different from the first operating mode, the transformer device (18) is short-circuited in a phase-controlled manner by means of a switching device (20) of the electrical load apparatus (12), wherein the switching device (20) is phase-controlled such that, depending on a phase angle of the phase control of the switching device (20) by the transformed alternating current, the inductive reactive power (QIND) for the public grid (14) is generated by means of the switching device (20). The invention also relates to an electrical load apparatus (12) and to an electrolysis apparatus (10).
The invention specifies a method for determining the average distance (v) between a measurement device (3) and a conductor (1), wherein the measurement device (3) has a measurement system (2), wherein an electrical current flows through the conductor (1), thus producing a magnetic field having a magnetic flux density (B[T]), wherein the magnetic flux density (B[T]) has a horizontal component (BH) and a vertical component (BV). The method comprises the following steps: - determining (S1) a profile of the horizontal component (BH) using the horizontal position (h[m]) of the measurement device (3), wherein the horizontal position (h[m]) indicates the orthogonal distance between the measurement device (3) and the longitudinal axis of the conductor (1) parallel to the earth's surface, wherein the profile of the horizontal component (BH) is determined by measuring the horizontal components (BH) at at least two different horizontal positions (h[m]) by means of the measurement system (2) of the measurement device (3), which changes the horizontal position (h[m]), and - determining (S2) a profile of the vertical component (BV), which is associated with the determined profile of the horizontal component (BH), using the horizontal position (h[m]) of the measurement device (3), wherein the profile of the vertical component (BV) is determined by measuring the vertical components (BV) associated with the determined horizontal components (BH) by means of the measurement system (2), - determining (S3) the ratio (M) of the profile of the vertical component (BV) to the profile of the horizontal component (BH) as a function using the horizontal position (h[m]) of the measurement device (3), - determining (S4) the derivative of the ratio (M) according to the horizontal position, - determining (S5) the reciprocal of the derivative, and - determining (S6) the average distance (v) between the measurement devices (3) and the conductor (1) from the reciprocal of the derivative. The invention also specifies a measurement apparatus (3).
G01B 7/26 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring depth
F17D 5/00 - Protection or supervision of installations
G01B 7/02 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width, or thickness
G01V 3/08 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01V 3/10 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
G01V 3/16 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat specially adapted for use from aircraft
A heatshield for a gas turbine engine. The heatshield comprising a main body having a leading edge, a trailing edge, lateral edges, a first surface and a second surface, the first surface being exposed to a hot working gas in use passing through the gas turbine engine. The main body having an array of cooling channels for conveying a coolant flow, where each cooling channel of the array of cooling channels having and a surface. At least one cooling channel of the array of cooling channels comprising at least one flow disturbing feature extending from the surface and into the cooling channel.
F01D 5/08 - Heating, heat-insulating, or cooling means
F01D 11/18 - Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion
F01D 11/24 - Actively adjusting tip-clearance by selectively cooling or heating stator or rotor components
A water delivery system (18) for delivering water for injection into gas turbine engine combustor (4) includes a centrifugal pump (19) and a metering valve (23). The centrifugal pump (19) has an inlet (20) connected to a water source and a discharge (21) connected to a water supply line (22). The metering valve (23) is connected to the water supply line (22) downstream of the discharge (21) of the centrifugal pump (19). The water supply line (22) is connected to an injector nozzle (14) downstream of the metering valve (23). The metering valve (23) is operable to regulate a flow rate of water in the water supply line (22), to thereby meter an amount of water supplied to the injector nozzle (14).
According to the invention, a gas composition, in particular a hydrogen excess, is ascertained in a fuel cell (5) by means of a cyclic voltammetric measurement for the purposes of examining said fuel cell (5). A particularly advantageous use of the invention lies in the monitoring of a hydrogen excess in the gas spaces (6, 7) of a storing or non-operated fuel cell (5), in particular also in the remote monitoring thereof. However, it can also be used very advantageously for the purposes of monitoring and/or controlling a deactivation procedure of a fuel cell (5), in particular in order to set a desired gas atmosphere in the fuel cell (5), such as, e.g., a hydrogen excess, in the process. This is possible without interventions in the fuel cell (5) using only a single measuring device. All that is required is an access to the electrical load terminals of the fuel cell.
A heatshield for a gas turbine engine, comprising a main body having a leading edge, a trailing edge, lateral edges, a first surface and a second surface. The first surface being exposed to a hot working gas in use passing through the gas turbine engine. The heatshield having a leading hook and a trailing hook each extending between the lateral edges, the leading hook and the trailing hook extending from the second surface. A stiffening structure extending from the leading hook to the trailing hook and free from direct contact or attachment to the second surface.
F01D 11/18 - Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion
F01D 11/24 - Actively adjusting tip-clearance by selectively cooling or heating stator or rotor components
An investment casting core (10) incorporates an alignment guide (24) extending through a body (12) of the core. The alignment guide (24) defines a coolant flow path (92) in a later-cast metal component (76) extending from a coolant outlet opening (90) in an impingement structure (88) to an impingement target area (86) of a cooling feature (84) formed on an impingement cooled surface (82) of the component (76). Methods of making the core (10) and using the core (10) in lost wax investment casting processes are also described.
The invention relates to a circuit assembly comprising at least one coil assembly (1) with a first coil (2) and a second coil (3), the first coil (2) being connected to a DC voltage side of a rectifier (8) of the circuit assembly (7), and the second coil (3) being connected to a power source (12) of the circuit assembly (7), the first coil (2) and the second coil (3) being coupled to each other via a coupling component (4) of the coil assembly (1), said coupling component forming a core of each of the coils (2, 3).
H02M 1/40 - Means for preventing magnetic saturation
H02M 1/14 - Arrangements for reducing ripples from dc input or output
H02M 7/06 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
H02M 7/155 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
H01F 29/14 - Variable transformers or inductances not covered by group with variable magnetic bias
H02M 1/12 - Arrangements for reducing harmonics from ac input or output
H02M 7/17 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
H02M 7/23 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
46.
METHOD AND SYSTEM FOR MONITORING THE OPERATING STATE OF HIGH-VOLTAGE DEVICES OF AN ENERGY SUPPLY NETWORK
The invention relates to a method (1) for monitoring the operating state of high voltage devices (5) of a power supply grid, in which method - by means of sensors which are arranged on or in the high voltage devices (5), measurement values are detected, - the measurement values, or values derived from the measurement values, are transmitted to communications units (4) via a close range communication link, - access data at a query time are transmitted to a data processing cloud (2), - the data processing cloud (2) selects a number of communications units (4), which number is dependent on the access data, and connects to the selected communications units (4) via a far range communication link (3), - the measurement values and/or the values derived from the measurement values are transferred via the far range communication link (3) from the selected communications units (4) to the data processing cloud (2), - the data processing cloud (2) generates a visualization on the basis of the measurement values and/or the values derived from the measurement values, which visualization represents the operating state of the high voltage devices which are connected to at least one of the selected communications units (4) via the close range communication link.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
47.
MAGNETICALLY CONTROLLABLE CHOKE COIL HAVING CENTRAL CONNECTION
The invention relates to a device (1) for reactive power compensation in a high voltage network (17) comprising at least one phase conductor (16, 18, 19). The device according to the invention (1) has a high voltage connection (8) for each phase conductor. A first and a second core portion (3, 4) which are part of a closed magnetic circuit, a first high voltage winding (5) which surrounds the first core portion, a second high voltage winding (6) which surrounds the second core portion and is connected in parallel to the first high voltage winding, at least one saturation switching branch (10, 11) which is designed to saturate at least one core portion (3, 4) and has controllable power semiconductor switches (20, 21, 22, 23), and a control unit (26) for controlling the power semiconductor switches (20, 21, 22, 23) are provided for each high voltage connection (8). In order to avoid leakage field losses, at least one high voltage winding is equipped with a central connection and is connected at the winding ends thereof to the saturation switching branch. The central connection (50), however, is connected to the high voltage connection (8).
H01F 29/14 - Variable transformers or inductances not covered by group with variable magnetic bias
H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
H02P 13/12 - Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by varying magnetic bias
48.
FEEDWATER CONTROL FOR A FORCED-FLOW WASTE-HEAT STEAM GENERATOR
The invention relates to a method for operating a forced-flow steam generator constructed as a waste-heat steam generator having a pre-heater (1), comprising a number of pre-heater heating surfaces (2), and having an evaporator (3) comprising a number of evaporator heating surfaces (4) which are connected downstream on the flow medium side of the pre-heater heating surfaces (2), in which a device for adjusting a feed water mass flow is supplied having a set point for the feed water mass flow, wherein, during the creation of the set point for the feed water mass flow, a waste-heat flow transferred to a fluid in the evaporator heating surfaces (4) is determined and, in addition, mass storage and energy storage in the fluid in the evaporator heating surfaces (4) is detected during non-steady-state plant operation, characterized in that a behaviour over time of a mass storage in the evaporator (3) is coupled with a behaviour over time of a mass storage in the pre-heater (1), wherein scaling is carried out with a ratio of the density changes in the evaporator (3) and in the pre-heater (1). The invention further relates to a forced-flow waste-heat steam generator (11).
F22D 5/30 - Automatic feed-control systems responsive to both water level and amount of steam withdrawn or steam pressure
F22B 29/06 - Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
F22B 35/12 - Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating at critical or supercritical pressure
A device is for reactive power compensation in a high-voltage network having a phase conductor. The device has a first high- voltage terminal, which is configured to be connected to the phase conductor. For each first high-voltage terminal, a first and a second core section, which are part of a magnetic circuit, a first high-voltage winding, which encloses the first core section, and a second high-voltage winding are provided. Moreover, the device has a saturation switching branch, which saturates the core sections and has controllable power semiconductor switches. A control unit is used to control the power semiconductor switches. The first and the second high- voltage windings are connected by the high-voltage end to the associated first high-voltage terminal and on the low-voltage side can be connected to one or the saturation switching branch. To be able to be connected in series into the high- voltage network, a second high-voltage terminal is provided.
During a mixture of a nickel based super alloy a MCrALY composition and a praise alloy a good composition is found for welding or for additive manufacturing.
The invention relates to a glass ring (1) for current measurements, comprising a glass body, which can be arranged around an electrical conductor (2) and has a light entry surface (4) and a light exit surface (5). The glass ring (1) is designed to allow light which enters the glass body through the light entry surface (4) to circulate completely around the conductor (2) in the glass body by reflection on outer faces of the glass body, the light exiting from the glass body on the light exit surface (5). The glass ring (1) consists of a monolithic glass body. The method according to the invention for optical current measurement comprises a current flow (3) in an electrical conductor (2) generating an electromagnetic field around the conductor (2), by means of which the polarisation of a light beam in the glass ring (1), which is arranged around the conductor (2), in particular with a plane perpendicular to the longitudinal axis of the conductor, is changed as the light beam circulates around the conductor (2).
The invention relates to identifying the occurrence of a defect (11) in a pipeline (10) by means of estimation, wherein at least one first indicator (40) is identified by a first detection means (20) assigned to a first detection location (30), from which indicator a first estimation value regarding the occurrence of the defect (11) in the pipeline (10) is determined by means of a first estimation function, and at least one second indicator (41-43) is identified by at least one second detection means (21-23) assigned to a second detection location (31-33), from which indicator at least one second estimation value regarding the occurrence of the defect (11) in the pipeline (10) is determined by means of at least one second estimation function, and an overall estimation value is determined from the first estimation value and the at least one second estimation value by means of an overall estimation function by taking into account the respective positions of the first detection location (30) and of the second detection location (31-33), from which overall estimation value the occurrence of the defect (11) is estimated.
G01M 3/04 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
G01M 3/38 - Investigating fluid tightness of structures by using light
The invention relates to an arrangement (27) and to a method for the gradual shutoff of potential in high voltage technology, comprising at least one armature body (28), electrically insulating film (29), and electrically conductive regions (4), wherein the electrically conductive regions (4) are arranged between layers of the electrically insulating films (29), and at least parts of the electrically insulating film (29) are arranged around the at least one armature body (28). The arrangement (27) is designed for direct current applications, wherein resistive compensation currents are reduced and/or avoided along the electrically insulating film (29) by configuration for higher voltage levels, and/or by an armature body (28), which functions as a first gradual potential shutoff coating, and/or by means of the electrical contacting of the outermost electrically conductive region (4) between layers of electrically insulating film (29) via an electrical contact (30) through an opening (31) in the outer layer of the insulating film (29).
The present invention relates to an insulator having an end fitting and a connecting device arranged on the end fitting for connecting the insulator to a suspension and having an additional operating means, characterized in that the end fitting and the connecting device are designed in one piece. The present invention further relates to an arrangement for dissipating overvoltage using the insulator according to the invention.
The invention relates to an electrolysis unit and to a method for electrochemically decomposing water into hydrogen and oxygen. The electrolysis unit comprises at least two electrolysis modules. The electrolysis unit also comprises exactly one first gas separation device for a first product gas comprising oxygen and exactly one second gas separation device for a second product gas comprising hydrogen. The first gas separation device is connected to the at least two electrolysis modules by means of respective first lines. The second gas separation device is connected to the at least two electrolysis modules by means of respective second lines. The at least two first lines have the same first length. The at least two second lines likewise have the same second length.
A potential equalization system for a modular multi-level converter. The converter has a plurality of converter modules and each of the modules has a direct current source. The potential equalization system includes pole contacts, which are each electrically connected to one pole of a direct current source, and at least one electrically conductive contacting element, which can be moved between a first end position in which the contacting element is electrically isolated from the converter modules and a second end position in which the contacting element contacts pole contacts of different direct current sources and can be put on ground potential.
An exhaust apparatus (10) for a gas turbine (1) includes an annular duct (12) with a plurality of struts (18) extending at least from an outer duct-wall (14) to an inner duct-wall (16) of the annular duct (12). Each strut (18) is encapsulated in a respective strut shield (20). An interface (22, 24) of the strut shield (20) with a respective duct-wall (14, 16) includes at least one collar (26) extending along a partial length of the perimeter of the strut shield (20) at the respective interface (22, 24). The collar (26) includes a first section (32) extending radially and being aligned with the strut shield (26), and a second section (34) oriented at an angle to the first section (32) and being aligned with the respective duct-wall (14, 16). The first section (32) is attached to the strut shield (20) along a first joint (42) and the second section (34) is attached to the respective duct-wall (14, 16) along a second joint (44). An intersection (40) of the first and second sections (32, 34) is formed by a smooth curve defined by a radius configured to distribute stresses at the respective interface (22, 24).
A sealed core-coil assembly includes a coil assembly having an inner coil with inner, outer, upper, and lower surfaces, and an outer coil with inner, outer, upper, and lower surfaces, a core assembly including a core window and core column of a magnetically-permeable material, the core column and core window having inner side surfaces, and an expandable sealing member including an inner cavity that is fillable or evacuatable. An expandable sealing member is provided between: one or more inner side surfaces of the core column and one or more inner surfaces of the inner coil, the outer surface of the inner coil and the inner surface of the outer coil, and between the upper and lower surfaces of the inner and outer coils and the inner side surfaces of the core window. Core-coil assemblies, sealing assemblies, and sealing methods are provided, as are numerous other aspects.
A shielded coil assembly (106, 108, 110) and a dry-type transformer (100) formed using the shielded coil assembly (106, 108, 110), comprising a coil (114) having an outer surface (202, 218a, 220a), an inner surface (204, 218b, 220b), an upper end surface (206, 218c, 220c) and a lower end surface (208, 218d, 220d) and a first insulating material (216) formed over the outer surface (202, 218a, 220a), inner surface (204, 218b, 220b), upper end surface (206, 218c, 220c) and lower end surface (208, 218d, 220d) of the coil (114); and a conductive shield (210) comprising a conductive paint applied along the first insulating material (216) so that the conductive paint extends over at least a portion of each of the outer surface (202, 218a, 220a), inner surface (204, 218b, 220b), upper end surface (206, 218c, 220c), and lower end surface (208, 218d, 220d) of the coil (114).
H01F 27/32 - Insulating of coils, windings, or parts thereof
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
60.
MAGNETICALLY CONTROLLABLE THROTTLE FOR REACTIVE POWER COMPENSATION HAVING CAPACITIVELY CONNECTED AUXILIARY WINDINGS
In order to create a full variable shunt reactor having two magnetically controllable high-voltage throttles which is compact and at the same time can also provide capacitive reactive power, auxiliary windings are used which are inductively coupled to the high-voltage throttles. The auxiliary windings are connected to at least one capacitively acting component.
G05F 1/38 - Regulating voltage or current wherein the variable is actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
H01F 29/14 - Variable transformers or inductances not covered by group with variable magnetic bias
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
H02P 13/12 - Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by varying magnetic bias
61.
SYSTEM FOR CONTROLLING A COOLING UNIT OF A TRANSFORMER
The invention relates to a system (1) for controlling a cooling unit (3) of a transformer (2), more particularly a traction transformer of a rail vehicle (8) and a corresponding method for controlling a system (1) of this kind. The problem addressed is that of improving the efficiency and life of a transformer (2) having a cooling unit (3). To solve this problem, the system (1) according to the invention comprises a transformer (2), a cooling unit (3), which is configured to cool the transformer (2), and a control unit (4), which is configured to control the cooling unit (3) for cooling the transformer (2). The control unit (4) is configured to control the cooling unit (3) using measurement data representing at least one state of the system (1) and/or using environmental data in expectation of a change in the temperature of the transformer (2) as a result of the utilisation of the transformer (2) and/or as a result of environmental influences. This prevents the transformer (2) from overheating, thereby increasing the efficiency and life of the transformer (2).
H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
62.
METHOD AND DEVICE FOR IDENTIFYING AN INTER-TURN SHORT CIRCUIT IN PARALLEL WINDINGS
The invention relates to a method for monitoring an electrical assembly (1) which comprises a plurality of electrical coils (L1, L2, L3) connected in parallel. In the method, the difference in current (?I1, ?I2, ?I3) between the current (I1, I2, I3) flowing through the coils and the mean value (lav) of the currents (I1, I2, I3) flowing through the coils is ascertained for each of the coils (L1, L2, L3) connected in parallel. The differences in current (?I1, ?I2, ?I3) are used to identify when an inter-turn short circuit occurs in one of the coils.
H02H 3/44 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to the rate of change of electrical quantities
H02H 3/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection - Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
H02H 7/04 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for transformers
87278243 ABSTRACT A capacitor bank (1) which has a plurality of capacitor units (C1 _ C12), in which each capacitor has a plurality of electrical capacitor elements (CE1 _ CEm), and the capacitor units (C1 _ C12) are divided into a plurality of groups of capacitor units (C1 _ C4, C5 _ C8, C9 _ C12). The arrangement has a plurality of group monitoring units (52, 64, 68), with one of the group monitoring units (52, 64, 68) associated with each group of capacitor units (C1 _ C4, C5 _ C8, C9 _ C12). At least one of the group monitoring units (52) is configured so that it monitors the respective group of capacitor units (C1 _ C4) for a failure of a capacitor element (CE1 _ CEm) in one of the capacitor units (C1 _ C4) of the group and, when such a failure of a capacitor element (CE3) is detected, transmits data which describe this failure of the capacitor element (CE3) to a monitoring receiver (72). Date Recue/Date Received 2020-12-07
H01G 9/26 - Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/16 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against electric overloads, e.g. including fuses
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
H01G 2/16 - Protection against electric or thermal overload with fusing elements
H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H01G 9/00 - Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
H01G 9/28 - Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
H02H 7/16 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for capacitors
A rotor balancing method for a gas turbine is provided. The method comprises providing a rotor (100) comprising a first correction plane (152) and a second correction plane (154), wherein a first balancing weight (W1) is attached to the first correction plane (152). The method comprises performing a first influence run. The first balancing weight W1 remains fitted for the subsequent second influence run. The method comprises fitting a first calibration weight (M1) to the second correction plane (154) using a reference influence vector. The method comprises performing a second influence run. The method comprises removing the first calibration weight (M1) from the rotor (100) and calculating an influence vector of the second correction plane (154) using a first set of vibration measurements and a second set of vibration measurements taken during the first influence run and the second influence run, respectively. The method comprises carrying out balancing of the rotor by fitting a final balancing weight (W1') to the first correction plane (152) and a second balancing weight (W2) to the second correction plane (154) using the calculated influence vectors.
A rotor balancing method comprises: mounting first and second bearings on first and second pedestals; performing a base run by; carrying out partial balancing and a first influence run of the rotor by: fitting a first balancing weight to the first correction plane; performing a first influence run by: running the rotor at a speed and measuring the vibrations at the first and second pedestals, leaving the first balancing weight fitted; performing a second influence run by: fitting a first calibration weight to the second correction plane, running the rotor at the speed and measuring the vibrations at the first and second pedestals, and removing the first calibration weight; carrying out final balancing of the rotor by: fitting a final balancing weight to the first correction plane and a second balancing weight to the second correction plane dependent on the vibrations measured in the first and second influence runs.
A method of controlling a combustion system of a gas turbine engine (10). The gas turbine engine (10) has a combustor (28) with a primary combustion zone (110), of which a condition in the primary combustion zone (110) is defined by a primary zone control parameter. The method comprises controlling the primary zone control parameter (PZCP) to be substantially constant value over a range of values of compressor inlet air temperature (T1).
The invention relates to a grid influencing system of an electricity grid (4), comprising a current-conducting grid influencing component (6) and a short-circuiting device (8) that includes a circuit breaker (10). The invention in characterized in that the circuit breaker (10) is a vacuum circuit breaker having a vacuum circuit breaker tube that includes an at least partly integrated pre-arcing unit (12) for actively generating an arc (14) between two contacts (19, 34).
A tap changer assembly of a dry-type transformer. The tap changer assembly includes a first molding including multiple taps, a semi-conductive coating applied to the first molding, a conductive shield provided overtop some of the semi-conductive coating, a grounding member comprising a ring of bosses interconnected by a grounding conductor connected to the conductive shield, a second molding applied over at least a portion of the conductive shield and the grounding conductor, the second molding forming a molded sealing surface, a conductive cover coupled to the ring of bosses; and a sealing member sealing a space between the molded sealing surface and the conductive cover. Dry-type transformers and methods of forming a tap changer assembly of a dry-type transformer are provided, as are numerous other aspects.
A transformer core for a dry-type transformer includes a laminated construction having several groups of stacked laminations that form a step-lap sequence of laminations. Each group in the step-lap sequence has a mean length different than an adjacent group in the step-lap sequence and has at least two identical laminations per group, wherein at least one group has at least four identical laminations. Methods of assembling a transformer core are also provided, as are other aspects.
A rotor shaft cap (300) for a gas turbine, comprising: a disk-shaped body (310) defining: a first axial face (312), a second axial face (314), and an outer radial face (316), the disk-shaped body (310) comprising: a first annular jaw (330) provided on the first axial face (312), the first annular jaw (330) comprising a plurality of teeth (332) projecting from the first axial face (312); a plurality of apertures (340) defined by the disk-shaped body (310), each aperture (342, 344, 346) of the plurality of apertures (340) extending through the disk-shaped body (310) along an axial direction (30).
A circuit arrangement and to a method for operating the circuit arrangement, particularly a circuit arrangement for the DC power supply of a plurality of parallel electrolysers, where the circuit arrangement has a rectifier which converts an input-side alternating voltage into an output-side first DC voltage. Each electrolyser is respectively connected in parallel to the output of the rectifier by a down converter converting the first DC voltage into a second DC voltage such that the second DC voltage drops over the electrolyser. Each of the down converters is controllable and/or regulatable in order to adapt the level of the second direct voltage.
A device for reactive power compensation in a high-voltage network contains a phase conductor. A high-voltage connection is provided for each phase of the high-voltage network. Each high-voltage connection is connected to a first high-voltage winding which surrounds a first core portion and to a second high-voltage winding which surrounds the second core portion. The core portions are part of a closed magnetic circuit. The low-voltage ends of each high-voltage winding can be connected to at least one saturation switching branch configured to saturate the core portions and has actuatable power semiconductor switches controlled by a control unit. To manufacture the device inexpensively, each saturation switching branch has a two-pole submodule having a bridge circuit and a DC voltage source so that, depending on the actuation of the power semiconductor switches, the DC voltage source can either be connected in series to the high-voltage winding or can be bridged.
In some embodiments, a connection bar is provided for connecting multiple high voltage coils of a dry-type transformer along a top or bottom of the dry-type transformer. The connection bar includes (1) an electrically insulating body having a plurality of openings, each opening sized to receive at least one of high voltage terminals of the transformer; (2) an electrical connection pathway within the electrically insulating body configured to create a predetermined electrical connection between multiple high voltage coils of the transformer; (3) external connector terminals embedded within and extending from the electrically insulating body, the external connector terminals connected to the electrical connection pathway; and (4) a ground shield embedded within the electrically insulating body and configured to shield high voltage terminals of each high voltage coil of the transformer. Numerous other aspects are provided.
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
The invention relates to a core for a transformer. Said core comprises a multiplicity of bent metal sheets bonded together to form a structure surrounding a core opening and forming the core. Said metal sheets comprise sheet ends not touching one another within the core, causing the core with said metal sheets to form at least one air gap at said sheet ends within the core or at a periphery of the core. Said air gap forms magnetic resistance that increases with the width of said air gap. This causes no-load losses. An object of the invention is to minimize those no-load losses in the transformers through the lowest possible magnetic resistances. A lacquer is provided which contains magnetic particles. Said lacquer impregnates or coats the core at least at said sheet ends of said metal sheets and fills each air gap between said sheet ends of said metal sheets.
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 3/02 - Cores, yokes or armatures made from sheets
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
75.
GAS TURBINE CONTROLLER ADAPTED FOR TRANSIENT EVENTS
A controller (600) for a gas turbine (100) is described. The gas turbine (100) comprises the compressor (101) arranged to operate at a rotational speed n, the combustor (102) and the fuel supply means (127) comprising the first fuel supply means and the second fuel supply means, wherein the compressor (101) is arranged to provide air to the combustor (102) at a steady state air mass flow rate mss and wherein the fuel supply means (127) is arranged to supply fuel at a fuel mass flow rate mtotal to the combustor (102). The controller (600) is arranged to, responsive to a load change ?L to the load L, control the compressor (101) to provide air to the combustor (102) at a new air mass flow rate m TR , wherein the new air mass flow ratem TR is within a range between a first threshold m LBO and a second threshold m SUR .
A controller (700) for a gas turbine (100) is described. The gas turbine (100) comprises the compressor (101) arranged to operate at a rotational speed n, the combustor (102) and the fuel supply means (127) comprising the first fuel supply means and the second fuel supply means, wherein the compressor (101) is arranged to provide air to the combustor (102) at a steady state air mass flow rate mss and wherein the fuel supply means (127) is arranged to supply fuel at a fuel mass flow rate m total to the combustor (102). The controller (700) is arranged to, responsive to the load change ?L to the load L, control the fuel supply means to supply a proportion Z of the fuel mass flow rate m total as a fuel mass flow rate m fuel pilot via the first fuel supply means based, at least in part, on a combustor mass flow rate m t.
The invention relates to an electric device (1), for example a track transformer, for connecting to a high-voltage line. The electric device (1) has a magnetizable core (2), at least one winding (5, 6) which is arranged in the vicinity of the core (2), and a housing (9, 10) which is filled with an insulating fluid and in which at least one winding (5, 6) is arranged. The core (2) is arranged at least partly outside of the housing (9, 10). In order to allow a stable mounting of a core consisting of two halves, the core (2) is arranged completely between two opposing pressing plates (11, 12), between which tension elements (13) for clamping the core (2) extend.
The invention relates to a current converter. The current converter comprises: a primary conductor; a housing, through which the primary conductor is led; an inductive alternating- current sensor, which has at least one secondary coil arranged in the housing; and a compensation current sensor, having a compensation coil arranged in the housing for producing a compensation magnetic field, which compensates a primary magnetic field produced by the primary conductor, and having a magnetometer for detecting a sum of the primary magnetic field and the compensation magnetic field.
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
79.
ADAPTIVE POWER MANAGEMENT RECOGNITION AND ASSIGNMENT SYSTEM
A method and controller for controlling electrical activation of elements in a system. A method includes identifying (710) a first element (102) of a system (100) by a control system (600), among a plurality of elements (102, 110, 122) of the system (100), that is to be powered. The method includes determining (712) connected elements (1 10, 122) of the system (100) by the control system (600). The connected elements (110, 122) are connected to deliver power to the first element (102) directly or indirectly, based on an adjacency matrix (400), and the adjacency matrix (400) identifies connections between each of plurality of elements of the system (100). The method includes identifying (714) at least one of the connected elements (110, 122) to activate by the control system (600), based on the adjacency matrix (400), a health table (500), and the connected elements (1 10, 122), to deliver power to the first element (102). The method includes activating (716) the at least one of the connected elements (1 10, 122) by the control system (600), thereby delivering power to the first element (102).
A controller (300) for a gas turbine engine (10) which operates to a control method. The gas turbine engine (10) comprises a compressor (14) having a casing (50) which extends along, and is centred on, an operational axis (20). An array (48) of compressor blades are coupled to a rotatable engine shaft (22) which extends along the operational axis (20). A first variable guide vane (8a) is axially spaced apart from the compressor blade array (48) along the operational axis (20), wherein the first variable guide vane (8a) is rotatably mounted at a first location (202) on the casing (50), having a vane axis of rotation (121) at right angles to the operational axis (20). The first variable guide vane (8a) is coupled to an adjustment drive (154) operable to rotate the first variable guide vane (8a) about its axis of rotation (121) to a range (A-D) of angles relative to the operational axis (20). The controller (300) is operable to control the rotation of the first variable guide vane (8a) in dependence of engine shaft speed wherein over a first range (A-B) of engine shaft speed the angle of the first variable guide vane (8a) relative to the operational axis (20) decreases with increasing engine speed and over a second range (B-C) of engine shaft speeds the angle of the first variable guide vane (8a) relative to the operational axis (20) : increases with increasing engine speed.
A method and controller for operating a pumping station. The method includes receiving (1102), by at least one controller (910, 952), sensor data (712) of a first pumping station (900) corresponding to a liquid being transported from the first pumping station (900). The method includes predicting (1104) arrival of the liquid, by the at least one controller (910, 952), at a second pumping station (900). The method includes executing (1106) one or more pump models (720), by the at least one controller (910, 952), according to the sensor data (712) to determine an optimal pumping configuration. The method includes operating (1108) one more pumps of the second pumping station (900), by the at least one controller (910, 952), according to the optimal pumping configuration.
A heat shield (60) for a gas turbine engine (10), the heat shield (10) comprising a main body (61) having a first surface (70) and a second surface (72), the first surface (70) being exposed to a hot working gas in use, a plurality of walls (74, 76, 78, 80) upstanding from the second surface (72) and an impingement plate (86). The impingement plate (86) is located on top of at least one wall of the plurality of walls (74, 76, 78, 80) and forms a chamber (88) with the second surface (72) and plurality of walls (74, 76, 78, 80) and comprises an array of impingement holes (90). At least one pair of divider walls (92, 94) comprising a first divider wall (92) and a second divider wall (94) formed within the chamber (88) and extending between the impingement plate (86) and the second surface (72). The first divider wall (92) having a length that extends from a first wall (74, 76, 78, 80) of the plurality of walls (74, 76, 78, 80) towards a second wall (74, 76, 78, 80), the second wall (74, 76, 78, 80) opposing the first wall (74, 76, 78, 80), the second divider wall (94) having a length that extends from the second wall (74, 76, 78, 80) towards the first wall (74, 76, 78, 80). The first divider wall (92) and second divider (94) wall both extend such that there is no clear line of sight in a perpendicular direction (96) to the first divider wall (92) and/or second divider wall (94) and the first divider wall (92) and second divider wall (94) are spaced apart with respect to the perpendicular direction.
An internally-cooled turbomachine component, comprising: a main body (200) comprising; a first end wall (210), a second end wall (212) spaced apart from the first end wall (210), and a sidewall (220) which extends between the first end wall (210) and the second end wall (212) such that the first end wall (210), the second end wall (212) and the sidewall (220) define a cooling passage (230) extending between a fluid inlet (202) and a fluid outlet (204), a pedestal bank (240) comprising a plurality of pedestals (241) which span the cooling passage (230) between the first end wall (210) and the second end wall (212), wherein the pedestal bank (240) is spaced from the sidewall (220) to define a flow channel (250) therebetween; and a flow guide (260) for directing cooling flow away from the flow channel (250), the flow guide (260) extending from the flow channel (250) into the pedestal bank (240).
A nickel base super alloy or blade alloy having Ni as a main constituent and the following elements or portions in wt%: Fe: 2 to 8, Al: 6.1 to 6.8, Cr: 12.5 to 15, W: 1.5 to 4.5, Ta: 2.5 to 5.5, Hf: 1.2 to 2, C: 0.03 to 0.13, B: 0.005 to 0.02, Zr: 0.005 to 0.02, and Si: 0.005 to 0.02.
A connecting element electrically and mechanically connects two electrolytic cell stacks. An electrolysis device includes at least one connecting element of this type and the electrolytic cell stacks are connected by the connecting element. For the hydraulic connection of the electrolytic cell stacks, the connecting element has at least two hydraulic interfaces for each of two water circuits, which water circuits are independent of each other. Furthermore, the connecting element has electrical connection points electrically connected to each other, in order to connect the electrolytic cell stacks in a common circuit. By the connecting element, the connected electrolytic cell stacks can be hydraulically separated or connected to each other, depending on the design.
A converter station has two line-commutated converters for energy transmission via a bipolar high voltage direct current transmission line. In a first operating mode of the converter station the two converters are electrically connected in an anti-parallel circuit to the same pole of the high voltage direct current transmission link and one of the converters is operated as a rectifier and the other converter is operated as an inverter in an network. In a second operating mode the two converters are connected to different poles of the high voltage direct current transmission link and both converters are operated as either rectifiers or inverters in the AC network. In both operating modes a station active power exchanged between the converter station and the AC network is controlled by real power specifications for converter active powers which are exchanged between the converters and the AC network.
H02M 7/757 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
H02M 1/36 - Means for starting or stopping converters
H02M 7/493 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
H02M 7/77 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means arranged for operation in parallel
87.
POWER TRANSMISSION VIA A BIPOLAR HIGH-VOLTAGE DC TRANSMISSION LINK
A converter station includes two line-commutated converters for energy transmission through a bipolar high voltage direct current transmission link. The two converters are electrically connected in an anti-parallel circuit to the same pole of the high-voltage direct current transmission link. One of the converters is operated as a rectifier in an AC grid and the other converter is operated as an inverter in the AC grid. A station reactive power exchanged by the converter station with the AC grid is controlled by real power stipulations for converter real powers which are exchanged between the converters and the AC grid. A method for operating the converter station is also provided.
The aim of the invention is to create a transformer (20) for mounting on a mast of an air-insulated energy distribution network, the core of which transformer is protected against corrosion and environmental influences, while at the same time stable retention is provided. This aim is achieved, according to the invention, in that the transformer (20) has a winding block (1) having a solid insulating body, in which at least one upper voltage winding and at least one lower voltage winding are arranged. The winding block (1) delimits a completely peripherally closed central retention opening (25). Furthermore, a core unit (26) is provided, which has at least one magnetizable core (2.1, 2.2) and is inductively coupled to each lower voltage winding by means of each upper voltage winding. The core unit (26) extends through the retention opening (25) by means of at least one core leg and annularly extends around the winding block (1) on the outside by means of a ring portion (27). Retention means (7.1, 7.3, 5, 8.1) are provided for fastening the ring portion to the mast (8).
Abstract The invention relates to a winding unit (10) for connecting to a high-voltage network. The winding unit has a winding (12), which is embedded in a solid insulating body (11), and a first main connection terminal (19), which is connected to a first winding end of the winding (12) and is arranged on a first support (1) formed on insulating body (11). Furthermore, a second main connection terminal (20) is provided, which is connected to a second winding end of the winding (12). The winding has partial windings (13, 14) and taps (17), by means of which the number of windings of the partial windings (13, 14) connected in series can be set. By means of outgoing lines (15, 16, 18) extending in the insulating body (11), the taps (17) are connected to a tap connection terminal (3, 4, 5, 6, 7, 8) accessible from the outside. In order to encapsulate the upper voltage in the resin block over the entire periphery by means of a shielding cage, according to the invention, the tap connection terminals (3, 4, 5, 6, 7, 8) are formed on the support (1). Date Recue/Date Received 2020-04-28
In a cost-effective and qualitatively better method for producing spacers for a winding unit of an electrical high- voltage device, at least two starting components are mixed together in a mixing chamber under vacuum to form a component mixture. The component mixture is transferred to an extrusion housing, likewise under vacuum, of an extruder in which a transport device is arranged and which is equipped with a mouthpiece delimiting an outlet opening. The extrudate exiting from the mouthpiece is cured by the addition of heat in a vacuum in order to obtain the spacers.
B29C 39/00 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/25 - Component parts, details or accessories; Auxiliary operations
B29C 48/28 - Storing of extruded material, e.g. by winding up or stacking
B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
B29C 48/475 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
B29C 39/42 - Casting under special conditions, e.g. vacuum
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
H01F 27/32 - Insulating of coils, windings, or parts thereof
B29B 13/00 - Conditioning or physical treatment of the material to be shaped
B29C 39/10 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
A method of controlling a gas turbine engine (10) having in axial flow series a compressor (14), a combustor (16), a compressor-turbine (18) and an exhaust (30) and preferably a power turbine (19) located between the turbine (18) and the exhaust (30), the power turbine (9) is connected to a shaft (28) for driving a load (26). The gas turbine is capable of operating in at least a high output power range 65R, a medium-high output power range 67R, a medium- low output power range 70R, 70R' and a low output power range 72R. The method comprising the steps during the medium-high output power range 67R bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) so that a first predetermined temperature T1 of the combustor is maintained, during the medium-low output power range 70R, 70R' bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) and bleeding a gas from the downstream part (36) of the compressor (14) to the exhaust (30) so that a second predetermined temperature T2 of the combustor is maintained.
F02C 9/18 - Control of working fluid flow by bleeding, by-passing or acting on variable working fluid interconnections between turbines or compressors or their stages
A method of controlling a gas turbine engine (10), the gas turbine engine (10) having in axial flow series a compressor (14), a combustor (16), a compressor-turbine (18) and an exhaust (30), the gas turbine capable of operating in at least a high output power range (65R), a medium-high output power range (82R), a medium output power range (67R), a medium-low output power range (70R, 70R') and a low output power range (72R). The method comprising the steps during the medium-high output power range (82R) varying the angle of the variable guide vanes (46) so that a third predetermined temperature (T3) of the combustor (16) is maintained, during the medium output power range (67R) the variable guide vanes (46) are closed and bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) so that a first predetermined temperature (T1) of the combustor (16) is maintained, during the medium-low output power range (70R, 70R') the variable guide vanes (46) are closed and bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) and bleeding a gas from the downstream part (36) of the compressor (14) to the exhaust (30) so that a second predetermined temperature (T2) of the combustor (16) is maintained.
F02C 9/28 - Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed
F02C 9/18 - Control of working fluid flow by bleeding, by-passing or acting on variable working fluid interconnections between turbines or compressors or their stages
F02C 9/20 - Control of working fluid flow by adjusting vanes
A compressor aerofoil (70) for a turbine engine. The compressor aerofoil (70) comprises a tip portion (100) comprising a tip wall (106) which extends from the aerofoil leading edge (76) to the aerofoil trailing edge (78). The tip wall (106) defines a squealer (110) which extends between the leading edge (76) the trailing edge (78). A shoulder (104, 105) is provided on one of the suction surface wall (88) or pressure surface wall (90) which extends between the leading edge (76) and the trailing (78). A transition region (108) tapers from the shoulder (104) in a direction towards the tip wall (106). The other of the suction surface wall (88) or pressure surface wall (90) extends towards the tip wall (106).
An assembly for connecting to a high-voltage grid includes a plurality of single-phase transformers, each of which has a transformer tank that is filled with a fluid and is equipped with a core with at least one coil. The coils of the single- phase transformers are at least partly connected together, thereby forming a neutral or star point. In order to permit the assembly to be quickly assembled in situ while at the same time providing a reliable current path for compensation and grounding currents, the coils are connected together by a neutral or star point conductor or rail in order to form the neutral or star point. The neutral or star point conductor or rail is retained in an insulated manner on the transformer tank.
H01F 27/00 - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Details of transformers or inductances, in general
H01F 27/40 - Structural association with built-in electric component, e.g. fuse
A polymeric tank for housing power components in a dry or fluid filled environment is disclosed. A mounting receptacle and plug pair used to secure the power components within the interior walls of the tank. The mounting receptacle configured to be an integral part of the interior wall. A permeable shield is insertable within the interior walls of the tank to safeguard against electromagnetic radiation.
A controller (50) for a gas turbine arranged to supply a load L is described. The gas turbine comprises a fuel supply means arranged to supply fuel at a fuel flow rate FF to a combustor. The fuel supply means comprises a first fuel supply means and a second fuel supply means. The controller (50) is arranged to control a proportion P of the fuel flow rate FF supplied via the first fuel supply means based, at least in part, on the fuel flow rate FF. A gas turbine comprising such a controller (50) and a method of controlling such a gas turbine are described.
A controller (50) for a gas turbine is described. The gas turbine is arranged to supply a load L. The gas turbine comprises a fuel supply means arranged to supply fuel at a fuel flow rate FF to a combustor, wherein the fuel supply means comprises a first fuel supply means and a second fuel supply means. The controller (50) is arranged to determine one or more ratios R of one or more combustor operating parameters COP respectively at the load L to respective reference combustor operating parameters COPR at a reference load LR. The controller (50) is further arranged to control a proportion P of the fuel flow rate FF supplied via the first fuel supply means based, at least in part, on the determined one or more ratios R. A gas turbine (600) and a method of controlling a gas turbine are also described.
A gas turbine combustor assembly with a trapped vortex feature A combustor assembly (100) of a gas turbine engine (10) having a trapped vortex feature to reduce emissions is presented. The trapped vortex is formed using ammonia injected into an annular cavity (60) located in a wall surrounding a combustion chamber (28) of the combustor assembly. The annular cavity (60), and therefore the trapped vortex, is positioned such that when the combustion occurs within the combustion chamber the position of the annular cavity, and therefore of the trapped vortex, is downstream of a flame front (9). The emissions resulting from combustion travel through the combustion chamber (28) and pass by the annular cavity (60) before exiting the combustion chamber. The trapped vortex in the combustion chamber supplies NH2radicals, resulting from the ammonia of the trapped vortex, to the passing by emissions and converts NOx and/or N20 in the emissions to non-polluting products, mainly water and nitrogen.
The invention relates to a functional structure (1) for use in an energy converter and/or a turbomachine. The structure (1) comprises a lattice comprising at least one lattice cell (2), comprising lattice nodes (3) and lattice connecting elements (4) connected to the lattice nodes (3), the lattice cell (2) also comprising a gyrating mass (5) which is connected to the lattice nodes (3) by means of at least one arm (6), the gyrating mass (5) being designed to receive mechanical energy (W) when the structure (1) is in use. A lattice constant (C) of the lattice cell (2) has a dimension of less than 100 mm.
An additive manufacturing technique is presented. A first layer of powdered material is spread on a build platform, with or without having a workpiece positioned therein. The build platform is in a part building module of an additive manufacturing apparatus. The powdered material is a precipitation-hardened superalloy such as a Nickel-based superalloy, for example a Nickel-based superalloy having a percentage by volume of gamma prime phase equal to or greater than 45 percentage by volume. The first layer forms at least a part of a powder bed formed of the powdered material on the build platform. The powdered material of the first layer is heated to a temperature between 65 percent and 70 percent of a liquidus temperature of the precipitation-hardened superalloy. After aforementioned pre-heating, portions of a surface of the first layer are selectively scanned by using an energy beam arrangement to melt or sinter the selectively scanned portions.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 5/04 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
patents
