WO2018229972A1 - Disjoncteur à gaz - Google Patents

Disjoncteur à gaz Download PDF

Info

Publication number
WO2018229972A1
WO2018229972A1 PCT/JP2017/022341 JP2017022341W WO2018229972A1 WO 2018229972 A1 WO2018229972 A1 WO 2018229972A1 JP 2017022341 W JP2017022341 W JP 2017022341W WO 2018229972 A1 WO2018229972 A1 WO 2018229972A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
movable
arc
electric field
circuit breaker
Prior art date
Application number
PCT/JP2017/022341
Other languages
English (en)
Japanese (ja)
Inventor
周也 真島
旭 島村
嵩人 石井
隆介 落合
丸島　敬
アシフ アリ シャジャハン
崇文 飯島
松本　詠治
Original Assignee
株式会社東芝
東芝エネルギーシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社東芝, 東芝エネルギーシステムズ株式会社 filed Critical 株式会社東芝
Priority to PCT/JP2017/022341 priority Critical patent/WO2018229972A1/fr
Priority to JP2019524692A priority patent/JP6746787B2/ja
Publication of WO2018229972A1 publication Critical patent/WO2018229972A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • Embodiments of the present invention relate to gas circuit breakers.
  • the gas circuit breaker which performs current switching in the power system mechanically disconnects the contacts in the interrupting process, and extinguishes the arc discharge between the contacts produced by the disconnection of the contacts by the arc extinguishing gas spray.
  • gas breakers of the type called puffer type are in widespread use.
  • the puffer-type gas circuit breaker compresses the arc-extinguishing gas by the mechanical operation force and pressurizes the arc-extinguishing gas using the heat of the arc discharge to blow the arc-extinguishing gas against the arc discharge. .
  • the puffer-type gas circuit breaker In the puffer-type gas circuit breaker, at least a pair of contacts are disposed opposite to each other in a closed vessel filled with arc-extinguishing gas, and mechanical operation is performed to open the state in which the contacts are brought into contact with each other. Release to shut off the current. Furthermore, the puffer-type gas circuit breaker is provided with pressure accumulation means for accumulating pressure extinguishing gas in the closed container.
  • the accumulator means comprises a puffer chamber whose volume decreases with the opening of the contact.
  • the pressure accumulation of the arc-extinguishing gas in the puffer chamber may be insufficient. Therefore, when the gas circuit breaker is downsized and drive energy is reduced, dielectric breakdown between the contacts tends to occur.
  • the problem to be solved by the present invention is to provide a miniaturized and low energy-powered gas circuit breaker having excellent current interrupting performance.
  • the gas circuit breaker of the embodiment has a sealed container, a first contactor portion and a second contactor portion, an operation mechanism, an insulating nozzle, an accumulator, and a movable electric field shield.
  • the closed vessel is filled with an arc extinguishing gas.
  • the first contactor portion and the second contactor portion are provided so as to be able to contact and separate from each other in a predetermined direction in the sealed container.
  • the first contact portion and the second contact portion contact each other in the closed state and are separated from each other in the open state.
  • the operation mechanism is connected to the first contactor portion.
  • the operation mechanism separates the first contact portion and the second contact portion from the closed state to the open state.
  • the insulating nozzle is formed in a tubular shape.
  • the insulating nozzle is displaced in conjunction with the first contact portion in an opening process of the first contact portion and the second contact portion.
  • the insulating nozzle surrounds an arc discharge which arcs between the first contact portion and the second contact portion in the open state.
  • the pressure accumulation means accumulates the arc extinguishing gas.
  • the pressure accumulation means discharges the arc-extinguishing gas into the flow passage inside the insulating nozzle and sprays it against the arc discharge.
  • the movable electric field shield is provided at the same potential as one of the first contactor portion and the second contactor portion. The movable electric field shield is separated from the other contactor in conjunction with one of the contactors when the first contactor and the second contactor are separated in the predetermined direction by a predetermined distance or more in the opening process.
  • Sectional drawing which shows the insulation nozzle vicinity of the gas circuit breaker which concerns on 1st Embodiment.
  • the graph which shows the relationship between the elapsed time in interruption
  • Sectional drawing which shows the gas circuit breaker of 2nd Embodiment.
  • Sectional drawing which shows the gas circuit breaker of 2nd Embodiment.
  • Sectional drawing which shows the gas circuit breaker of 3rd Embodiment.
  • First Embodiment 1 to 4 are cross-sectional views showing the gas circuit breaker of the first embodiment.
  • 1 shows the closing state of the gas circuit breaker 1
  • FIG. 2 shows the opening state immediately before the electrode closing in the closing state of the gas circuit breaker 1
  • FIG. 3 shows the opening state of the gas circuit breaker 1
  • the completely open state of the gas circuit breaker 1 is shown.
  • the gas circuit breaker 1 is a switchgear that opens and closes an electric circuit of a power system.
  • the gas circuit breaker 1 includes a closed vessel 2 filled with an arc extinguishing gas, and an opposing unit 3 and a movable unit 4 disposed in the closed vessel 2.
  • the closed container 2 has an internal space in which the current flowing through the electric circuit is interrupted.
  • the closed container 2 is formed of a metal material.
  • the closed container 2 is grounded.
  • a pair of conductors 5 ⁇ / b> A and 5 ⁇ / b> B are drawn into the closed container 2 from the outside of the closed container 2.
  • An arc extinguishing gas is a gas excellent in arc extinguishing performance and insulation performance, and is, for example, sulfur hexafluoride (SF 6 ) gas.
  • the arc-extinguishing gas may be a substance having a smaller global warming potential than sulfur hexafluoride.
  • Substances having a smaller global warming potential than sulfur hexafluoride are, for example, air, carbon dioxide, oxygen, nitrogen and the like.
  • the facing unit 3 and the movable unit 4 constitute a part of an electric circuit.
  • the opposing unit 3 includes an opposing contact portion 20 (second contact portion) electrically connected to one of the conductors 5A.
  • the movable unit 4 includes a movable contact portion 50 (first contact portion) electrically connected to the other conductor 5B.
  • the gas circuit breaker 1 opens or closes an electric circuit by bringing the opposing contact portion 20 and the movable contact portion 50 into contact with or separated from each other, thereby conducting or interrupting current.
  • a state in which the opposing contact portion 20 and the movable contact portion 50 are in contact with each other is referred to as a closed pole state
  • a state in which the opposing contact portion 20 and the movable contact portion 50 are separated from each other is referred to as an open state
  • a state applied when it is not necessary to shut off the electric circuit is particularly referred to as a closed state.
  • a state in which the current blocking operation is completed is particularly referred to as a complete open state.
  • a process of separating the facing contact portion 20 and the movable contact portion 50 from the input state toward the complete opening state is referred to as an opening process.
  • the opposing unit 3 and the movable unit 4 are each formed of a plurality of cylindrical or cylindrical members.
  • the cylindrical or cylindrical members are arranged with their central axes aligned.
  • the facing unit 3 and the movable unit 4 are arranged to face each other in the axial direction (predetermined direction) of the central axis.
  • the axial direction of the central axis is simply referred to as the axial direction.
  • the direction around the center axis is referred to as a circumferential direction.
  • the direction orthogonal to the said central axis is called radial direction.
  • the direction in which the movable contact portion 50 is separated from the facing contact portion 20 as viewed from the facing unit 3 in the axial direction is referred to as the movable side, and the opposite side is referred to as the opposite movable side.
  • the direction in which the facing contact portion 20 is separated from the movable contact portion 50 as viewed from the movable unit 4 in the axial direction is referred to as the opposite side, and the opposite side is referred to as the opposite side.
  • the facing unit 3 includes a cooling cylinder 10, a support 12, and a facing contact portion 20.
  • the cooling cylinder 10 is formed in a cylindrical shape by a metal material. Both ends of the cooling cylinder 10 are open in the axial direction.
  • the cooling cylinder 10 is coupled to one of the conductors 5A to conduct electricity.
  • the support 12 is formed of a metal material.
  • the support 12 includes a ring portion 13 and a protruding portion 14 protruding radially inward from the ring portion 13.
  • the ring portion 13 is formed to have substantially the same diameter as the cooling cylinder 10.
  • the ring portion 13 is continuous with the movable end of the cooling cylinder 10.
  • the protruding portion 14 is integrally formed with the ring portion 13.
  • An opposing arc contact 25 described later is attached to the tip of the protrusion 14.
  • the support 12 is in communication with the cooling cylinder 10.
  • the opposing contact portion 20 includes an opposing conducting contact 21 and an opposing arc contact 25.
  • the opposing current-carrying contact 21 is formed in a cylindrical shape by a metal material. Both ends of the counter contact 21 are opened in the axial direction.
  • the opposing conductive contact 21 is formed to have the same diameter as the cooling cylinder 10.
  • the opposing conductive contact 21 is continuous with the movable end of the ring portion 13 of the support 12. The opening edge on the movable side of the counter conductive contact 21 bulges inward.
  • the opposing current-carrying contact 21 is electrically connected to the cooling cylinder 10 via the support 12.
  • the opposing arc contact 25 is formed in a cylindrical shape by a metal material.
  • the opposing arc contact 25 is disposed inside the opposing conductive contact 21.
  • the opposing arc contact 25 is supported by the support 12 and extends from the protrusion 14 of the support 12 toward the movable side.
  • the movable edge 25 a of the opposing arc contact 25 is slightly opposite to the movable edge 21 a of the opposing conductive contact 21 on the opposite side.
  • the movable end of the opposing arc contact 25 is rounded.
  • the opposing arc contact 25 is conducted to the cooling cylinder 10 via the support 12.
  • the movable unit 4 includes an operation rod 30 (operation mechanism), a cylinder 35, a piston 40, a movable contact portion 50, an insulating nozzle 60, a support portion 70, and a movable electric field shield 80.
  • the operating rod 30 is formed of a metal material.
  • the operation rod 30 includes a solid portion 31 formed in a cylindrical shape, and a hollow portion 32 formed in a cylindrical shape and continuously provided to the solid portion 31.
  • the solid portion 31 is provided on the opposite side of the hollow portion 32.
  • the solid portion 31 is connected to a drive device (both not shown) via an insulating rod at the end on the opposite side, and is axially displaceable with respect to the closed container 2.
  • the outer diameter of the hollow portion 32 substantially matches the outer diameter of the solid portion 31.
  • the inner diameter of the hollow portion 32 is larger than the outer diameter of the opposing arc contact 25.
  • the opposite end of the hollow portion 32 is closed by the solid portion 31.
  • the opposite end of the hollow portion 32 is open toward the opposite side.
  • a first ventilation hole 32a communicating the inside and the outside of the hollow portion 32 in the radial direction is formed.
  • the first vent holes 32 a are formed on the opposite side of the piston 40 in the closed state.
  • the cylinder 35 is formed in a cylindrical shape by a metal material.
  • the cylinder 35 includes a peripheral wall 36 extending along the axial direction, and a bottom wall 37 connected to the opposite end of the peripheral wall 36.
  • the inner diameter of the circumferential wall 36 is larger than the outer diameter of the operating rod 30.
  • the circumferential wall 36 surrounds the operating rod 30 from the outside in the radial direction.
  • the bottom wall 37 protrudes radially inward from the opposite end of the peripheral wall 36.
  • a through hole 37a into which the operation rod 30 is inserted is formed. That is, the bottom wall 37 is formed in an annular plate shape.
  • the inner diameter of the through hole 37 a matches the outer diameter of the operating rod 30.
  • the opposite end of the operation rod 30 is inserted into and fixed to the through hole 37a.
  • the cylinder 35 is fixed to the operating rod 30 and is conducted to the operating rod 30.
  • the cylinder 35 is axially displaced in conjunction with the operating rod 30.
  • an exhaust hole 37b penetrating in the axial direction is formed in the inner peripheral portion of the bottom wall 37.
  • the exhaust hole 37b is continuous with the through hole 37a.
  • the piston 40 is disposed between the operating rod 30 and the peripheral wall 36 of the cylinder 35.
  • the piston 40 is formed in an annular plate shape extending in both the radial direction and the circumferential direction.
  • the inner diameter of the piston 40 matches the outer diameter of the operating rod 30.
  • the outer diameter of the piston 40 matches the inner diameter of the peripheral wall 36 of the cylinder 35.
  • the piston 40 is fixed in position with respect to the closed container 2 via the support 70.
  • the cylinder 35, the piston 40, and the operating rod 30 define a puffer chamber 45 (accumulation means) for accumulating an arc-extinguishing gas.
  • the puffer chamber 45 is variable in volume in conjunction with the displacement of the operating rod 30.
  • the puffer chamber 45 pressurizes the internal arc extinguishing gas by reducing its volume along with the displacement of the cylinder 35 and the operation rod 30 to the opposite side.
  • the arc-extinguishing gas pressurized in the puffer chamber 45 is discharged from the puffer chamber 45 through the exhaust hole 37 b of the cylinder 35.
  • the movable contact portion 50 includes a movable arc contact 51 and a movable conductive contact 55.
  • the movable arc contact 51 is formed in a cylindrical shape by a metal material. Both ends of the movable arc contact 51 are open in the axial direction.
  • the movable arc contact 51 is formed to have substantially the same diameter as the hollow portion 32 of the operation rod 30.
  • the movable arc contact 51 is connected to the opposite end of the hollow portion 32 of the operation rod 30 and is conducted to the operation rod 30.
  • the opening edge on the opposite side of the movable arc contact 51 bulges inward.
  • the inner diameter of the opening edge on the opposite side of the movable arc contact 51 matches the outer diameter of the opposite arc contact 25.
  • the movable arc contact 51 is axially displaced in conjunction with the operation rod 30.
  • the opposing arcing contact 25 and the movable arcing contact 51 are provided so as to be able to approach and separate from each other in the axial direction as the operating rod 30 is displaced.
  • the opposing arc contact 25 and the movable arc contact 51 contact each other in the closed state and are separated from each other in the open state.
  • the opposing arc contact 25 and the movable arc contact 51 are brought into contact with each other and conduct when the opposing arc contact 25 is inserted into the opening of the movable arc contact 51.
  • the movable current-carrying contact 55 is formed in a cylindrical shape by a metal material.
  • the movable conductive contact 55 is disposed to surround the movable arc contact 51.
  • the movable conductive contact 55 is erected on the opposite side from the bottom wall 37 of the cylinder 35.
  • the movable conductive contact 55 is electrically connected to the cylinder 35.
  • the end on the opposite side of the movable conductive contact 55 opens toward the opposite side.
  • the inner diameter of the movable conductive contact 55 is larger than the outer diameter of the movable arc contact 51.
  • the outer diameter of the movable conductive contact 55 is equal to the inner diameter of the opening edge on the movable side of the opposing conductive contact 21.
  • the opposite end 55a of the movable conductive contact 55 is slightly opposite to the opposite end 51a of the movable arc contact 51 (see FIG. 5).
  • the opposite end of the movable current-carrying contact 55 is rounded.
  • the movable energizing contact 55 is relatively fixed to the operation rod 30 via the cylinder 35.
  • the movable conductive contact 55 is axially displaced in conjunction with the operation rod 30.
  • the opposing current-carrying contact 21 and the movable current-carrying contact 55 are provided so as to be able to contact and be separated in the axial direction according to the displacement of the operation rod 30.
  • the opposing current-carrying contact 21 and the movable current-carrying contact 55 contact each other in the on state and are separated from each other in the open state.
  • the opposing current-carrying contact 21 and the movable current-carrying contact 55 separate from each other more quickly than the opposing arc contact 25 and the movable arc contact 51 in the opening process (see FIG. 2).
  • the opposing current-carrying contact 21 and the movable current-carrying contact 55 are brought into contact with each other and become conductive as the movable current-carrying contact 55 is inserted into the opening of
  • a first engagement portion 56 is integrally formed on the outer peripheral surface of the movable current-carrying contact 55.
  • the first engagement portion 56 protrudes outward in the radial direction from the outer peripheral surface of the movable current-carrying contact 55, and extends over the entire circumference along the circumferential direction.
  • the radially outer end edge of the first engagement portion 56 protrudes radially outward of the cylinder 35.
  • the insulating nozzle 60 is formed in a cylindrical shape by an insulating material.
  • the insulating nozzle 60 is erected on the opposite side from the bottom wall 37 of the cylinder 35 between the movable arc contact 51 and the movable conductive contact 55.
  • the opposite end of the insulating nozzle 60 is open toward the opposite side.
  • the insulating nozzle 60 is formed longer on the opposite side than the movable arc contact 51 and the movable conductive contact 55. That is, the opposing edge of the insulating nozzle 60 is located on the opposing side of the opposing edge 51 a of the movable arc contact 51 and the opposing edge 55 a of the movable conductive contact 55.
  • the insulating nozzle 60 is provided radially spaced from the movable arc contact 51.
  • the insulating nozzle 60 is in close radial contact with the inner circumferential surface of the movable conductive contact 55.
  • An exhaust hole 37 b of the cylinder 35 is opened radially inward of the insulating nozzle 60.
  • the insulating nozzle 60 guides the arc-extinguishing gas released from the puffer chamber 45 to an arc discharge described later.
  • the inside of the insulating nozzle 60 is provided with a parallel portion 61, a reduced diameter portion 62, a throat portion 63, and an enlarged diameter portion 64 in order in the axial direction.
  • the parallel portion 61 extends from the end on the opposite side of the insulating nozzle 60 with a constant inner diameter.
  • the opposite end of the parallel portion 61 is located at substantially the same position in the axial direction as the opposite end of the movable arc contact 51.
  • the inner diameter of the reduced diameter portion 62 gradually decreases from the end on the opposite side of the parallel portion 61 toward the opposite side.
  • the parallel portion 61 and the reduced diameter portion 62 surround the movable arc contact 51.
  • the throat portion 63 is formed between the reduced diameter portion 62 and the enlarged diameter portion 64.
  • the throat portion 63 has the smallest inside diameter at the insulating nozzle 60.
  • the inner diameter of the throat portion 63 is larger than the inner diameter of the opening edge on the opposite side of the movable arc contact 51 and smaller than the outer diameter of the movable arc contact 51.
  • the inside diameter of the enlarged diameter portion 64 gradually increases from the throat portion 63 toward the opposite side.
  • the inside of the insulating nozzle 60 forms a flow path of arc-extinguishing gas discharged from the puffer chamber 45 (details will be described later).
  • the support portion 70 includes a movable portion support 71 and a piston support 74.
  • the movable portion support 71 is formed in a cylindrical shape by a metal material.
  • the movable portion support 71 has a peripheral wall portion 72 extending along the axial direction, a collar portion 73 projecting radially inward from an end on the opposite side of the peripheral wall portion 72, and a portion opposite to the collar portion 73. And a closed portion 74 projecting radially inward from the peripheral wall portion 72 at the side position.
  • the inner diameter of the peripheral wall portion 72 is larger than the outer diameter of the cylinder 35.
  • the collar portion 73 is integrally formed with the peripheral wall portion 72.
  • the collar 73 is located at the same position as the piston 40 in the axial direction.
  • the inner diameter of the collar portion 73 matches the outer diameter of the cylinder 35.
  • the cylinder 35 is inserted into the inside of the collar portion 73.
  • the flange portion 73 and the peripheral wall portion 72 conduct to
  • the closing portion 74 is formed in a disk shape.
  • the closed portion 74 is fixed to the inner peripheral surface of the peripheral wall portion 72.
  • An insertion hole 74 a into which the operation rod 30 is inserted is formed at the central portion of the closing portion 74.
  • the inner diameter of the insertion hole 74 a matches the outer diameter of the operation rod 30.
  • the closing portion 74 is disposed on the opposite side of the first vent holes 32a of the operating rod 30 in the completely open state (see FIG. 4).
  • the movable portion support 71 is coupled to the other conductor 5B and conducted.
  • the piston support 75 is formed in a cylindrical shape by a metal material.
  • the piston support 75 is erected on the opposite side from the closed portion 74 of the movable portion support 71.
  • the outer diameter of the piston support 75 matches the inner diameter of the peripheral wall 36 of the cylinder 35.
  • the inner diameter of the piston support 75 is larger than the outer diameter of the operating rod 30.
  • the piston support 75 communicates with the piston 40 at the opposite end.
  • the piston support 75 is integrally formed with the closing portion 74 of the movable portion support 71 and the piston 40.
  • a second ventilation hole 72a penetrating in the radial direction is formed in the peripheral wall portion 72 of the movable portion support 71.
  • the second vent hole 72 a radially communicates the external space of the movable portion support 71 and the internal space between the peripheral wall portion 72 of the movable portion support 71 and the piston support 75.
  • the piston support 75 is formed with a third vent hole 75 a penetrating in the radial direction.
  • the third vent hole 75 a is formed in the vicinity of the end on the opposite side of the piston support 75.
  • the third vent hole 75 a radially communicates the space between the piston support 75 and the operation rod 30 and the internal space between the peripheral wall portion 72 of the movable portion support 71 and the piston support 75.
  • the movable electric field shield 80 is formed in a cylindrical shape by a metal material such as aluminum. Both ends of the movable electric field shield 80 are open in the axial direction.
  • the inner diameter of the movable electric field shield 80 is larger than the outer diameter of the cylinder 35 and matches the outer diameter of the first engagement portion 56.
  • the opposite end of the movable electric field shield 80 is rounded.
  • the movable electric field shield 80 is axially movably connected to the collar portion 73 of the movable portion support 71 via the elastic member 81.
  • the elastic members 81 are, for example, coil springs, and a plurality of elastic members 81 are provided at intervals in the circumferential direction.
  • the movable electric field shield 80 is electrically connected to the support 70 through the elastic member 81. Since the support portion 70 is electrically connected to the movable contact portion 50, the movable electric field shield 80 is provided at the same potential as the movable contact portion 50.
  • a second engagement portion 82 is integrally formed on the inner peripheral surface of the movable electric field shield 80.
  • the second engaging portion 82 protrudes radially inward from the end on the opposite side of the inner circumferential surface of the movable electric field shield 80.
  • the second engaging portion 82 extends around the entire circumference along the circumferential direction.
  • the first engagement portion 56 displaced to the opposite side with the second engagement portion 82 engages with the second engagement portion 82 from the opposite side.
  • the movable electric field shield 80 can be displaced toward the opposite side in conjunction with the operation rod 30 in a state where the movable electric field shield 80 is biased toward the opposite side.
  • the edge 80a on the opposite side of the movable electric field shield 80 is the edge 51a on the opposite side of the movable arc contact 51 and the movable current-carrying contact when the first engagement portion 56 is engaged with the second engagement portion 82 It is located on the opposite side of the end edge 55a on the opposite side of the child 55 (see FIG. 5). That is, the movable electric field shield 80 protrudes to the opposite side of the movable arc contact 51 and the movable conductive contact 55 in a state in which the first engagement portion 56 is engaged with the second engagement portion 82.
  • the shutoff operation of the gas circuit breaker 1 will be described.
  • the movable energizing contact 55 is inserted into and in contact with the opposing energizing contact 21, and the opposing arc contact 25 is inserted into and in contact with the movable arc contact 51.
  • the opposing unit 3 and the movable unit 4 are electrically connected, and an electric path is formed between the pair of conductors 5A and 5B.
  • the gas circuit breaker 1 When interrupting the current, the gas circuit breaker 1 displaces the operation rod 30 to the opposite side to separate the opposing contact portion 20 and the movable contact portion 50 from each other.
  • the movable arc contact 51, the movable conductive contact 55, the insulating nozzle 60, and the cylinder 35 interlock with the operating rod 30, and are displaced to the opposite side.
  • the cylinder 35 When the cylinder 35 is displaced to the opposite side, the volume of the puffer chamber 45 is reduced, and the arc-extinguishing gas inside the puffer chamber 45 is pressurized.
  • the distance between the opposing arc contact 25 and the movable arc contact 51 increases, and the current decreases toward the current zero point, and the arc discharge decreases.
  • the arc discharge decreases, the inflow of the arc-extinguishing gas into the puffer chamber 45 is stopped, and the puffer chamber 45 releases the high-pressure arc-extinguishing gas.
  • the arc-extinguishing gas released from the puffer chamber 45 is blown to the arc discharge through the flow path formed between the insulating nozzle 60 and the movable arc contact 51. Thereby, the arc discharge is extinguished and the current is cut off.
  • the operating rod 30 is further displaced to the opposite side toward the completely open state, and the blocking operation is completed.
  • the arc-extinguishing gas sprayed to the arc discharge is divided into a flow passage on the facing unit 3 side and a flow passage on the movable unit 4 side and discharged.
  • the flow passage on the opposite unit 3 side reaches the inside of the sealed container 2 through the throat portion 63 in the inside of the insulating nozzle 60, the enlarged diameter portion 64, and the internal space of the cooling cylinder 10 in order.
  • the flow path on the movable unit 4 side is the internal space of the movable arc contact 51, the space between the piston support 75 and the operation rod 30, and the peripheral wall of the movable portion support 71 from the opening on the opposite side of the movable arc contact 51
  • the space between the portion 72 and the piston support 75 is sequentially passed to the inside of the closed container 2.
  • the first engagement portion 56 formed on the movable conductive contact 55 engages with the second engagement portion 82 formed on the movable electric field shield 80 at a predetermined timing in the above-described opening process.
  • the movable electric field shield 80 is displaced toward the opposite side in conjunction with the operation rod 30.
  • the timing of the start of displacement of the movable electric field shield 80 will be described in detail. It is desirable that the timing of the start of displacement of the movable electric field shield 80 satisfy the following two conditions.
  • FIG. 6 is a graph showing the relationship between the elapsed time in the shutoff operation and the position of the operating rod.
  • the horizontal axis is the elapsed time in the shutoff operation.
  • the ordinate represents the position of the movable arc contact 51 in the axial direction, where the position of the movable arc contact 51 in the completely open state is 0 and the position of the movable arc contact 51 in the closed state is 100. It is a relative position.
  • time t0 indicates the start time of the shutoff operation (input state)
  • time t1 indicates the time when the opposing arc contact 25 and the movable arc contact 51 are separated.
  • time t ' indicates a time when a half cycle of the commercial frequency has elapsed from time t1
  • time t2 indicates a start time of displacement of the movable electric field shield 80
  • time t3 indicates an end time of the cutoff operation (completely open state) There is.
  • FIG. 7 is a cross-sectional view showing the vicinity of the insulating nozzle of the gas circuit breaker according to the first embodiment.
  • FIG. 8 is a graph showing the relationship between the elapsed time in the shutoff operation, the flow passage cross section in the nozzle, and the Mach number at the throat.
  • the horizontal axis is an elapsed time in the shutoff operation.
  • the vertical axis represents the Mach number of the arc-extinguishing gas in the throat portion 63 in the arc-extinguishing state, and the flow passage cross-sectional area of each portion.
  • S th is a cross-sectional area of the throat portion 63 shown in FIG.
  • S 2 is the minimum cross-sectional area of the flow path between the minimum cross-sectional area, i.e. the inner surface of the opposite arc contact 25 and the insulating nozzle 60 shown in FIG. 7 of the flow path in the downstream of the throat section 63.
  • the time t2 is the displacement start of the movable field shield 80
  • the minimum cross-sectional area of the cross-sectional area S 2 is the throat section 63 S of the flow path between the insulating nozzle 60 and the opposing arcing contact 25 It is after time t '' that becomes larger than th .
  • FIG. 9 is a graph for explaining the operation of the gas circuit breaker according to the first embodiment.
  • the horizontal axis is the elapsed time in the shutoff operation.
  • the vertical axis is the maximum value of the electric field of each part in a state where a constant voltage is applied between the facing contact part and the movable contact part.
  • Ae, Me and S are data of the movable arc contact, the movable energizing contact and the movable electric field shield of the gas circuit breaker according to the embodiment, respectively.
  • the gas circuit breaker which concerns on an Example is the gas circuit breaker 1 of this embodiment.
  • Ac and Mc are data of the movable arc contact and the movable energizing contact of the gas circuit breaker according to the first comparative example, respectively.
  • the movable electric field shield 80 and the elastic member 81 are omitted from the gas circuit breaker 1 according to the present embodiment.
  • Mm is data of the movable energizing contact of the gas circuit breaker according to the second comparative example.
  • the movable electric field shield 80 and the elastic member 81 are omitted from the gas circuit breaker 1 according to the present embodiment, and the diameter of the movable conductive contact 55 is reduced.
  • the electric fields of the movable arc contact and the movable conductive contact are relaxed as compared with the configuration of the first comparative example.
  • the electric field of the movable electric field shield increases with time until the displacement start time t2 in the opening process, and starts to decrease starting from the displacement start time t2.
  • the electric field of the movable electric field shield is smaller than the electric field of the movable arc contact in the configuration of the first comparative example at any time.
  • the movable arc contactor and the movable conductive contact in the configuration of the first comparative example are the maximum value of the electric field of the movable arc contactor, the movable conductive contact and the movable electric field shield at any time. It is smaller than the electric field of the child.
  • the gas circuit breaker 1 is provided at the same potential as the movable contact portion 50, and is movable when the opposing contact portion 20 and the movable contact portion 50 are separated in the axial direction by a predetermined distance or more in the separation process.
  • a configuration is adopted in which a movable electric field shield 80 spaced apart from the facing contact portion 20 is interlocked with the contact portion 50.
  • the movable electric field shield 80 is arranged to be separated from the facing contact portion 20 as much as the moving contact portion 50 in the completely open state, and the facing contact is also performed in the middle of the opening process.
  • the movable electric field shield 80 can be disposed at the same position as the movable contact portion 50 with respect to the child portion 20.
  • the electric field of the movable contact portion 50 can be relaxed by the movable electric field shield 80 from the middle of the opening process to the completely open state. Therefore, it is possible to improve the insulating cutoff performance to the transient recovery voltage applied after the thermal cutoff by the arc-extinguishing gas in the opening process. Further, since the electric field of the movable contact portion 50 can be alleviated by the movable electric field shield 80, the movable contact portion 50 can be downsized (small in diameter), and the gas circuit breaker 1 can be downsized.
  • the movable electric field shield 80 interlocks with the movable contact portion 50 after a half cycle or more of the commercial frequency has elapsed from time t1 when the facing contact portion 20 and the movable contact portion 50 are separated in the opening process. It is axially separated from the opposing contact portion 20. This prevents the movable electric field shield 80 from being linked to the operating rod 30 in the period from time t1 to time t 'when a half cycle of the commercial frequency elapses, and prevents the moving speed of the operating rod 30 from being reduced. .
  • the decrease in the separation speed of the opposing contact portion 20 and the movable contact portion 50 in the period up to the time point t ' is suppressed, and the dielectric breakdown voltage between the opposing contact portion 20 and the movable contact portion 50 is rapidly It is possible to enhance. Therefore, the dielectric breakdown due to the recovery voltage applied after the small current interruption can be suppressed, and the interruption performance can be improved.
  • the movable field shield 80 is in the separable process, the insulating nozzle 60 and the opposing arcing contact 25 when the minimum cross-sectional area S 2 of the channel is larger than the cross-sectional area S th of the throat portion 63 between t '
  • the movable contact portion 50 is axially separated from the facing contact portion 20.
  • the Mach number of the arc-extinguishing gas flowing through the throat portion 63 rises to 1 near time t ′ ′ when S 2 becomes larger than S th .
  • the thermal interrupting performance of the gas circuit breaker 1 at the time of high current interrupting is significantly improved when the Mach number of the arc-extinguishing gas in the throat portion 63 rises to one.
  • the load on the environment can be reduced.
  • a substance having a smaller global warming potential than sulfur hexafluoride may be inferior in arc extinction performance and electrical insulation performance to sulfur hexafluoride.
  • the current blocking performance can be improved by applying the configuration of the present embodiment, even when a substance having a global warming potential smaller than that of sulfur hexafluoride is used as the arc-extinguishing gas, the current blocking performance is degraded. Can be suppressed.
  • the insulating member 83 may be disposed on the surface of the movable electric field shield 80.
  • the insulating member 83 is, for example, an aluminum oxide film formed by subjecting the movable electric field shield 80 made of aluminum to an alumite treatment. Thereby, the occurrence of dielectric breakdown in the movable electric field shield 80 can be suppressed.
  • the 1st engaging part 56 is formed in the outer peripheral surface of the movable electricity supply contact 55, it is not limited to this.
  • the first engagement portion may be axially engageable with the second engagement portion 82 and be displaceable along with the movable contact portion 50 in accordance with the displacement of the operation rod 30.
  • the first engagement portion may be formed, for example, on the outer peripheral surface of the cylinder 35.
  • the 1st engaging part 56 and the 2nd engaging part 82 are extended over the perimeter along the circumferential direction, respectively, it is not limited to this.
  • the first engagement portion and the second engagement portion may be axially engageable, and may be intermittently provided along the circumferential direction.
  • Second Embodiment 10 to 12 are cross-sectional views showing the gas circuit breaker of the second embodiment.
  • 10 shows the closing state of the gas circuit breaker 101
  • FIG. 11 shows the opening state of the gas circuit breaker 101
  • FIG. 12 shows the complete opening state of the gas circuit breaker 101.
  • the gas circuit breaker 101 according to the second embodiment is different from the gas circuit breaker 1 according to the first embodiment in that a movable electric field shield 90 is provided on the facing unit 103.
  • the gas circuit breaker 101 includes an opposing unit 103 and a movable unit 104 disposed in the sealed container 2.
  • the facing unit 103 is mainly obtained by adding a cooling cylinder support 16 and a movable electric field shield 90 to the facing unit 3 according to the first embodiment.
  • the cooling cylinder 10 is connected to the operation rod 30 via a link mechanism or the like (not shown). By displacing the operation rod 30 to the opposite side, the cooling cylinder 10 is displaced to the opposite movable side together with the facing contact portion 20 and the like fixed relative to the cooling cylinder 10.
  • the movable unit 104 is obtained by omitting the movable electric field shield 80, the elastic member 81, the first engagement portion 56, and the second engagement portion 82 from the movable unit 4 according to the first embodiment.
  • the cooling cylinder support 16 is formed in a cylindrical shape by a metal material. Both ends of the cooling cylinder support 16 are open in the axial direction. A flange 17 projecting outward in the radial direction is formed at the movable-side end of the cooling cylinder support 16.
  • the inner diameter of the cooling cylinder support 16 is equal to the outer diameter of the cooling cylinder 10, the ring portion 13 of the support 12, and the opposing conductive contact 21. Inside the cooling cylinder support 16, the cooling cylinder 10, the ring portion 13 of the support 12, and the opposing conductive contact 21 are slidably inserted.
  • the cooling cylinder support 16 is electrically connected to the cooling cylinder 10, the ring portion 13 of the support 12, and the counter conductive contact 21.
  • the cooling cylinder support 16 is fixed to one of the conductors 5A (see FIG. 1) and conducted.
  • a third engagement portion 22 is integrally formed on the outer peripheral surface of the opposing current-carrying contact 21.
  • the third engaging portion 22 protrudes outward in the radial direction from the outer circumferential surface of the opposing current-carrying contact 21, and extends along the entire circumferential direction.
  • the movable electric field shield 90 is formed in a cylindrical shape by a metal material such as aluminum. Both ends of the movable electric field shield 90 are opened in the axial direction. The inner diameter of the movable electric field shield 90 is larger than the outer diameter of the opposing conductive contact 21. The movable end of the movable electric field shield 90 is rounded.
  • the movable electric field shield 90 is axially displaceably connected to the flange 17 of the cooling cylinder support 16 via an elastic member 91.
  • the elastic members 91 are, for example, coil springs, and a plurality of elastic members 91 are provided at intervals in the circumferential direction.
  • the movable electric field shield 90 is electrically connected to the cooling cylinder support 16 through the elastic member 91. Since the cylindrical support 16 is electrically connected to the opposing contact 20, the movable electric field shield 90 is provided at the same potential as the opposing contact 20.
  • a fourth engagement portion 92 is integrally formed on the inner circumferential surface of the movable electric field shield 90.
  • the fourth engaging portion 92 protrudes radially inward from an end on the opposite side of the inner circumferential surface of the movable electric field shield 90.
  • the fourth engaging portion 92 extends around the entire circumference along the circumferential direction.
  • the third engaging portion 22 displaced to the opposite side with the fourth engaging portion 92 engages with the fourth engaging portion 92 from the movable side.
  • the movable electric field shield 90 can be displaced toward the opposite movable side in conjunction with the operation rod 30 in a state of being biased toward the movable side.
  • the movable side edge 90a of the movable electric field shield 90 has the movable side edge 21a of the opposing conductive contact 21 and the opposing arc contact in a state where the third engaging part 22 is engaged with the fourth engaging part 92. It is located on the movable side of the movable edge 25a of the child 25 (see FIG. 13). That is, the movable electric field shield 90 protrudes to the movable side more than the opposing conductive contact 21 and the opposing arc contact 25 when the third engaging part 22 is engaged with the fourth engaging part 92.
  • the gas circuit breaker 101 is provided at the same potential as the facing contact portion 20, and when the facing contact portion 20 and the movable contact portion 50 are separated in the axial direction in the opening process, the gas circuit breaker 101 faces each other.
  • the configuration provided with the movable electric field shield 90 that is separated from the movable contact portion 50 in conjunction with the contact portion 20 is adopted. According to this configuration, the movable electric field shield 90 is arranged to be separated from the movable contact portion 50 as much as the facing contact portion 20 in the completely open state, and the movable contact is also generated in the middle of the opening process.
  • the movable electric field shield 90 can be disposed at the same position as the facing contact portion 20 with respect to the child portion 50.
  • the movable electric field shield 90 can alleviate the electric field of the facing contact portion 20 from the middle of the opening process to the completely open state. Therefore, it is possible to improve the insulating cutoff performance to the transient recovery voltage applied after the thermal cutoff by the arc-extinguishing gas in the opening process. Further, since the electric field of the facing contact portion 20 can be alleviated by the movable electric field shield 90, the facing contact portion 20 can be miniaturized (diameter reduction), and the gas circuit breaker 101 can be miniaturized.
  • the movable electric field shield 90 interlocks with the facing contact portion 20 when the facing contact portion 20 and the movable contact portion 50 are separated for a predetermined distance or more, the facing contact portion 20 and the movable contact portion 50 are predetermined. In the state of being separated by less than the distance, it is not interlocked with the facing contact portion 20. For this reason, the movable electric field shield 90 does not apply a load to the operation of the opposed contact portion 20 in a state where the opposed contact portion 20 and the movable contact portion 50 are separated by less than a predetermined distance. It is possible to suppress a decrease in the opening / closing speed of the portion 20 and the movable contact portion 50. Therefore, it is possible to rapidly increase the withstand voltage between the facing contact portion 20 and the movable contact portion 50. Therefore, the dielectric breakdown due to the recovery voltage applied after the small current interruption can be suppressed, and the current interruption performance can be improved.
  • the current interrupting performance of the gas circuit breaker 101 is improved, it is possible to miniaturize the gas circuit breaker 101 and reduce driving energy as in the first embodiment. As described above, it is possible to provide the miniaturized and low-energy-powered gas circuit breaker 101 having excellent current interrupting performance.
  • the third engaging portion 22 and the fourth engaging portion 92 extend along the circumferential direction over the entire circumference, but the present invention is not limited to this.
  • the third engaging portion and the fourth engaging portion may be engaged in the axial direction, and may be intermittently provided along the circumferential direction.
  • Third Embodiment 14 to 15 are cross-sectional views showing the gas circuit breaker of the third embodiment.
  • FIG. 14 shows the closing state of the gas circuit breaker 201
  • FIG. 15 shows the complete opening state of the gas circuit breaker 201.
  • the gas circuit breaker 201 of the third embodiment is characterized in that the movable electric field shield 80 is provided to the movable unit 4 and the movable electric field shield 90 is provided to the facing unit 103. It is different from That is, the gas circuit breaker 201 includes the facing unit 103 of the second embodiment and the movable unit 4 of the first embodiment.
  • the electric fields of the facing contact portion 20 and the movable contact portion 50 can be alleviated by the movable electric field shields 80 and 90. Therefore, as in the first embodiment and the second embodiment, since the current interrupting performance of the gas circuit breaker 201 is improved, a miniaturized and low drive energy gas circuit breaker having excellent current interrupting performance is provided. 201 can be provided.
  • FIG. 16 is a cross-sectional view showing the gas circuit breaker of the fourth embodiment.
  • FIG. 16 shows the completely open state of the gas circuit breaker 301.
  • the gas circuit breaker 301 of the fourth embodiment is different from the gas circuit breaker 1 of the first embodiment in that the movable unit 304 is provided with the auxiliary insulating nozzle 65. Further, the gas circuit breaker 301 of the fourth embodiment is different from the gas circuit breaker 1 of the first embodiment in that the boundary plate portion 38 is provided in the puffer chamber 45.
  • the auxiliary insulating nozzle 65 is formed in a cylindrical shape by an insulating material.
  • the auxiliary insulating nozzle 65 is provided on the opposite side from the bottom wall 37 of the cylinder 35 between the movable arc contact 51 and the insulating nozzle 60.
  • the opposite end of the auxiliary insulating nozzle 65 is open toward the opposite side.
  • the auxiliary insulating nozzle 65 is provided radially spaced from the insulating nozzle 60.
  • An exhaust hole 37 b of the cylinder 35 is opened radially outward of the auxiliary insulating nozzle 65.
  • a space between the insulating nozzle 60 and the auxiliary insulating nozzle 65 is a flow path of the arc-extinguishing gas discharged from the exhaust hole 37 b.
  • the auxiliary insulating nozzle 65 is formed higher on the opposite side than the movable arc contact 51. That is, the opposing edge of the auxiliary insulating nozzle 65 is located on the opposite side of the opposing edge 51 a of the movable arc contact 51.
  • the auxiliary insulating nozzle 65 is in close radial contact with the outer peripheral surface of the movable arc contact 51.
  • the opening edge on the opposite side of the auxiliary insulating nozzle 65 bulges inward.
  • the inner diameter of the opening edge on the opposite side of the auxiliary insulating nozzle 65 matches the inner diameter of the opening edge on the opposite side of the movable arc contact 51.
  • the auxiliary insulating nozzle 65 is disposed to surround the movable arc contact 51 from the radially outer side and the axially opposite side.
  • the boundary plate portion 38 is provided radially inward from the inner peripheral surface of the circumferential wall 36 of the cylinder 35.
  • the boundary plate portion 38 extends in the circumferential direction with a gap in the radial direction from the outer peripheral surface of the operation rod 30. That is, the boundary plate portion 38 is formed in an annular plate shape.
  • the space on the opposite side of the boundary plate portion 38 in the puffer chamber 45 is a thermal pressure-increasing chamber into which the arc-extinguishing gas that has been heated and expanded by the arc discharge flows.
  • the space on the opposite side of the boundary plate portion 38 in the puffer chamber 45 is a compression chamber in which the arc extinguishing gas is compressed by the piston 40.
  • a check valve (not shown) may be provided in the gap between the boundary plate portion 38 and the operation rod 30 to block the flow of arc-extinguishing gas from the heat pressure-increasing chamber to the compression chamber.
  • the opening edge on the opposing side of the auxiliary insulating nozzle 65 and the opposing arc contact 25 are in sliding contact with each other. Become.
  • the arc-extinguishing gas discharged from the puffer chamber 45 does not reach the arc discharge which arcs between the opposing arc contact 25 and the movable arc contact 51.
  • the arc discharge is less likely to extinguish, and the duration of the arc discharge becomes longer. That is, the arc discharge extinguishes when the opposing arc contact 25 and the movable arc contact 51 are sufficiently separated. Therefore, the dielectric breakdown due to the recovery voltage applied after the small current interruption can be suppressed, and the current interruption performance can be improved.
  • the puffer chamber 45 is divided into the heat pressurizing chamber and the compression chamber by the boundary plate portion 38, it is suppressed that the arc-extinguishing gas which is heated and expanded by the arc discharge in the separation process flows into the compression chamber. it can. Thereby, it is possible to suppress an increase in the reaction force to the driving force at the time of the shutoff operation, and it is possible to further reduce the driving energy of the gas circuit breaker 301.
  • the gas circuit breaker is provided at the same potential as one of the opposing contact portion and the movable contact portion, and the opposing contact portion and the movable portion are separated in the opening process.
  • a movable electric field shield is provided which interlocks with one of the contact portions to separate from the other contact portion. Energization is possible. Therefore, a miniaturized and low-energy-powered gas circuit breaker with excellent current interrupting performance can be provided.

Landscapes

  • Circuit Breakers (AREA)

Abstract

Le disjoncteur à gaz selon un mode de réalisation de l'invention comprend un récipient étanche (2), une première unité de contact (50) et une seconde unité de contact (20), un mécanisme d'actionnement (30), un manchon d'isolation (60), un moyen d'accumulation de pression (45), et un blindage de champ électrique mobile (80). La première unité de contact (50) et la seconde unité de contact (20) sont en contact l'une avec l'autre dans l'état fermé de pôle, et sont ouvertes et séparées l'une de l'autre dans l'état ouvert de pôle. Le mécanisme d'actionnement (30) est relié à la première unité de contact (50). Le mécanisme d'actionnement (30) amène la première unité de contact (50) et la seconde unité de contact (20) à s'ouvrir et se séparer l'une de l'autre, de l'état fermé de pôle à l'état ouvert de pôle. Le manchon d'isolation (60) entoure un arc de décharge d'arc entre la première unité de contact (50) et la seconde unité de contact (20). Le moyen d'accumulation de pression (45) libère un gaz d'extinction d'arc dans un trajet d'écoulement à l'intérieur du manchon d'isolation, qui est soufflé contre la décharge d'arc. Le blindage de champ électrique mobile (80) est réglé sur le même potentiel électrique que l'une des unités de contact parmi la première unité de contact (50) et la seconde unité de contact (20). Au cours de l'ouverture et de la séparation, lorsque la première unité de contact (50) et la seconde unité de contact (20) sont ouverts et sont séparées d'au minimum une distance prédéterminée dans une direction prédéterminée, le blindage de champ électrique mobile (80) se couple à l'une des unités de contact et se sépare de l'autre unité de contact.
PCT/JP2017/022341 2017-06-16 2017-06-16 Disjoncteur à gaz WO2018229972A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/022341 WO2018229972A1 (fr) 2017-06-16 2017-06-16 Disjoncteur à gaz
JP2019524692A JP6746787B2 (ja) 2017-06-16 2017-06-16 ガス遮断器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/022341 WO2018229972A1 (fr) 2017-06-16 2017-06-16 Disjoncteur à gaz

Publications (1)

Publication Number Publication Date
WO2018229972A1 true WO2018229972A1 (fr) 2018-12-20

Family

ID=64659270

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/022341 WO2018229972A1 (fr) 2017-06-16 2017-06-16 Disjoncteur à gaz

Country Status (2)

Country Link
JP (1) JP6746787B2 (fr)
WO (1) WO2018229972A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145620A (en) * 1980-04-14 1981-11-12 Hitachi Ltd Buffer type gas breaker
JPH01209622A (ja) * 1988-02-16 1989-08-23 Toshiba Corp パッファ形ガス遮断器
JPH10269912A (ja) * 1997-03-24 1998-10-09 Toshiba Corp ガス遮断器
JP2009124848A (ja) * 2007-11-14 2009-06-04 Toshiba Corp 電気機器
JP2012146405A (ja) * 2011-01-07 2012-08-02 Toshiba Corp ガス遮断器
JP2013191466A (ja) * 2012-03-14 2013-09-26 Toshiba Corp ガス遮断器
JP2014229363A (ja) * 2013-05-17 2014-12-08 株式会社東芝 ガス遮断器
JP2015011875A (ja) * 2013-06-28 2015-01-19 株式会社東芝 ガス遮断器
WO2016072161A1 (fr) * 2014-11-07 2016-05-12 三菱電機株式会社 Disjoncteur de dépression et disjoncteur à courant continu

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145620A (en) * 1980-04-14 1981-11-12 Hitachi Ltd Buffer type gas breaker
JPH01209622A (ja) * 1988-02-16 1989-08-23 Toshiba Corp パッファ形ガス遮断器
JPH10269912A (ja) * 1997-03-24 1998-10-09 Toshiba Corp ガス遮断器
JP2009124848A (ja) * 2007-11-14 2009-06-04 Toshiba Corp 電気機器
JP2012146405A (ja) * 2011-01-07 2012-08-02 Toshiba Corp ガス遮断器
JP2013191466A (ja) * 2012-03-14 2013-09-26 Toshiba Corp ガス遮断器
JP2014229363A (ja) * 2013-05-17 2014-12-08 株式会社東芝 ガス遮断器
JP2015011875A (ja) * 2013-06-28 2015-01-19 株式会社東芝 ガス遮断器
WO2016072161A1 (fr) * 2014-11-07 2016-05-12 三菱電機株式会社 Disjoncteur de dépression et disjoncteur à courant continu

Also Published As

Publication number Publication date
JP6746787B2 (ja) 2020-08-26
JPWO2018229972A1 (ja) 2019-11-07

Similar Documents

Publication Publication Date Title
RU2738087C2 (ru) Изолированный газом выключатель нагрузки низкого или среднего напряжения
JP2015079635A (ja) ガス遮断器
JP2015106513A (ja) ガス遮断器
JP2015041504A (ja) ガス遮断器
JP2013191466A (ja) ガス遮断器
EP3477675B1 (fr) Commutateur moyenne tension à isolation gazeuse comportant un dispositif de protection
WO2018229972A1 (fr) Disjoncteur à gaz
WO2018225255A1 (fr) Disjoncteur à gaz
JP2019091590A (ja) ガス遮断器
US11062862B2 (en) Gas-insulated high or medium voltage circuit breaker
JP2015011911A (ja) ガス遮断器
EP3503153B1 (fr) Disjoncteur haute ou moyenne tension isolé au gaz
WO2020084754A1 (fr) Disjoncteur à gaz
JP2016219317A (ja) ガス遮断器
JP6946475B2 (ja) ガス遮断器
US11217408B2 (en) Gas circuit breaker
JP2014002868A (ja) ガス遮断器
WO2019092862A1 (fr) Disjoncteur à gaz
WO2019092861A1 (fr) Disjoncteur à gaz
JP2015023006A (ja) ガス遮断器
JP2014186796A (ja) ガス遮断器
JP2013054989A (ja) ガス遮断器
JP2024525085A (ja) ガス絶縁高電圧または中電圧回路遮断器
JP2017068997A (ja) ガス遮断器
JP2016143473A (ja) ガス遮断器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17913576

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019524692

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17913576

Country of ref document: EP

Kind code of ref document: A1