摘要:
The invention relates to a device for measuring temperature in a high-voltage portion of a switchgear station, characterised in that it comprises: at least one temperature sensor (21, 22, 23, 24) located at a point on the high-voltage portion of which the temperature is to be monitored, at least one antenna (25) connected to the at least one temperature sensor, a control module (26) located in a low-voltage portion of the switchgear station, and at least one antenna (27) connected to the control module. The at least one temperature sensor (21, 22, 23, 24) is suitable for transmitting a signal representative of a temperature measurement and the control module (26) is suitable for receiving the representative signal, via the antennas, and for processing said signal in order to produce a message.
摘要:
The invention relates to a rotating-arc switchgear device (1), comprising a stationary contact (34) and a mobile contact (16) movable between a closed position in contact with the stationary contact (34) and an open position in which it is separated from the stationary contact (34), said circuit-breaker (1) including an inductor (13) including a coil (24) for generating a magnetic field which tends to rotate an electric arc (C2) that appears between the contacts (11, 16) about the longitudinal axis (AX) during the opening of said contacts. The inductor includes a coil (24) made up of a metal strip wound onto itself in a spiral.
摘要:
A top head housing for a current transformer, mounted on top of an insulating column of the current transformer, and forming a chamber for windings of the current transformer, the top head housing being made of two parts fixed one to the other, and including two openings through each of which a conductor penetrates the chamber, the openings being symmetrically opposed with reference to a main vertical axis of the top head housing, wherein the two parts of the top head housing consist of two half shells including identical bodies.
摘要:
The invention relates to electrical equipment (10) for a medium, high, or very high voltage power transmission line, comprising: a metal vessel (12); at least one conductor (14) arranged inside the vessel (12) and extending parallel to a main axis of the vessel (12); a medium (16) made from an insulating material, which lies in a plane that is radial relative to said main axis of the vessel (12), and which is connected to the conductor (14) as well as to the vessel (12); and studs (20) for connecting the medium (16) to the vessel (12), which are mounted onto the vessel (12), characterized in that each stud (20) is radially mounted through an associated opening (26) of the vessel (12) that opens radially toward the outside, and comprises an inner radial end (22) that engages with the medium (16).
摘要:
The invention relates to a device for detecting a partial discharge from high-voltage gas-insulated equipment, the device including at least one antenna (A) arranged outside the high-voltage gas-insulated equipment and opposite a hatch (H) of the high-voltage gas-insulated equipment, characterized in that it also includes a metal flange (B) which is placed in electrical contact with a metal wall (1a, 1b) of the high-voltage equipment, and which forms, together with said wall, a Faraday cage that electrically insulates the antenna from the outside of the high-voltage equipment, the metal flange (B) having a concave wall opposite the hatch (H).
摘要:
The invention relates to an expansion joint (1) for a pressurised insulating sheath comprising two sliding portions (9, 11), the first portion (9) comprising a pipe (14) which has a flare (16) followed by a ferrule (17) and a restriction (18) which has a central opening (19), for defining a recess (21) having a cross section which is twice that of the first pipe (14), the second portion (11) comprising another pipe (22) inserted into the opening (19) and into the pipe (14), having a flange (23) surrounding said second pipe (22) and extending into the annular recess (21) in order to divide said recess into two halves, a first aperture (27) passing through the flare (16) and a second aperture (28) passing through the second pipe (22) on the side of the flange (23) opposite the free end thereof, and means (J) for connecting, in a sealed manner, the opening (19) to the other pipe (22), the flange (23) to the recess (21), and the two pipes which are inserted into one another.
摘要:
Exemplary embodiments are directed to systems and methods for controlling an outlet temperature of an evaporator having a plurality of evaporator tube bundles, in which a processor is configured to compute an outlet temperature setpoint for the evaporator based on outlet temperatures of each of the plurality of evaporator tube bundles. The processor also regulates fluid flow through at least one of the evaporator tube bundles to reduce deviation between the outlet temperature of the evaporator and the outlet temperature setpoint for the evaporator.
摘要:
The invention relates to a steam turbine rotor (10, 20) wherein the inter blade region rotor surface (12, 22), the feed region rotor (10, 20) surface (14, 24), the piston region rotor surface (16, 26) and the stress relief groove rotor surface (18, 28) of the rotor (10, 20) are configured and arranged as steam exposed surfaces during normal operation of the steam turbine rotor (10, 20). The steam turbine rotor (10, 20) has a thermal barrier coating (19, 29) on at least the piston region rotor surface (16, 26).
摘要:
The invention relates to a clip for connecting a low-current device that is connected to earth to the conducting bar of a gas insulated substation, said clip being manoeuvrable when switched off for disconnecting the device with a view to a test of the substation. The fastening clip comprises: - an electrode (13) to be connected to the device which carries a contactor (13) movable in rotation between a closed position in which it extends said electrode (13) to bear against a terminal (4) of the conducting bar and an open position in which it is separated from said terminal of the conducting bar; - a housing portion (8) surrounding the electrode (13) and the movable contactor (16); - an arm (19) linked to the movable contactor (16) and passing through the housing portion (8) in order to manoeuvre the movable contactor (16) from the outside.
摘要:
Mechanical fastening system (10) for rotating or stationary components (1) such as turbine or compressor blades on a rotor or a shaft or a casing, respectively comprising a circumferential mounting groove adapted for receiving root sections (2) of said rotating or stationary components (1) as well as intermediate fastening components (3) for fixation of said components (1) in equidistance positions, whereby said intermediate fastening components (3) comprise at least an upper platform (31) and at least a side plate (32) having a groove (4) for mounting on said rotor, whereby said intermediate fastening components (3) are made of a plurality of distinct parts (31, 32, 33) of different materials from which at least one clamping part (33) is made of or comprises a shape memory alloy or similar material having a pseudo-elasticity behavior.