WO2012163068A1 - Chambre à extinction d'arc d'un disjoncteur - Google Patents

Chambre à extinction d'arc d'un disjoncteur Download PDF

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Publication number
WO2012163068A1
WO2012163068A1 PCT/CN2011/083633 CN2011083633W WO2012163068A1 WO 2012163068 A1 WO2012163068 A1 WO 2012163068A1 CN 2011083633 W CN2011083633 W CN 2011083633W WO 2012163068 A1 WO2012163068 A1 WO 2012163068A1
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WO
WIPO (PCT)
Prior art keywords
pressure
chamber
gas
gas storage
storage chamber
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/083633
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English (en)
Chinese (zh)
Inventor
郑闽生
吴忠
白刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Huadian Switchgear Co Ltd
Original Assignee
Xiamen Huadian Switchgear Co Ltd
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 Xiamen Huadian Switchgear Co Ltd filed Critical Xiamen Huadian Switchgear Co Ltd
Publication of WO2012163068A1 publication Critical patent/WO2012163068A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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

  • the invention relates to a circuit breaker arc extinguishing chamber.
  • the circuit breaker pressure-type arc extinguishing chamber completes the arc extinguishing by compressing the gas in the pressure chamber to generate an air flow.
  • the existing circuit breaker arc extinguishing chamber comprises a static contact module, a moving contact module, a pressure cylinder and a piston, and the piston A pressure chamber is formed between the cylinder and the pressure cylinder.
  • the movable contact module and the pressure cylinder are connected together and the movable contact module is moved relative to the piston by the pressure cylinder to change the volume of the pressure chamber.
  • the gas in the pressure chamber is compressed, and the arc combustion causes the gas to expand, so that the gas pressure in the pressure chamber rises.
  • one of the methods commonly used at present is to discharge the pressure of the gas in the compressed air chamber in a certain manner (such as installing a pressure relief valve), which reduces the pressure in the pressure chamber, but reduces the pressure in the pressure chamber.
  • the gas quality in the pressure chamber is also reduced, the gas density in the nozzle is lowered, the insulation performance is lowered, the gas blowing ability in the later stage is lowered, and the gas for extinguishing the arc is wasted.
  • the second method commonly used at present is to directly increase the remaining volume of the pressure chamber.
  • this method can limit the pressure of the gas in the pressure chamber during the breaking of the large current and long arc, the short arc is broken at the small current.
  • the gas pressure in the pressure chamber rises slowly and the air pressure is insufficient.
  • the present invention provides a circuit breaker arc extinguishing chamber that overcomes the deficiencies of the circuit breaker compressed air interrupter of the prior art.
  • the circuit breaker arc extinguishing chamber comprises a static contact module, a movable contact module, a pressure cylinder and a piston, and a pressure chamber is formed between the piston and the pressure cylinder, the movable contact module and the pressure cylinder are connected together and the piston is pressed through the cylinder
  • the activity can change the volume of the compressor chamber; it further includes a gas storage chamber and a valve unit, the valve unit is disposed between the pressure chamber and the gas storage chamber and: the gas in the gas chamber when the pressure difference between the pressure chamber and the gas storage chamber is higher than a preset value The gas is filled into the gas storage chamber, and when the pressure of the gas storage chamber is higher than the pressure of the gas pressure chamber, the gas in the gas storage chamber is recharged to the gas pressure chamber.
  • the air hood is fixed behind the piston, and the air hood and the piston cooperate to form a gas storage chamber.
  • valve unit is mounted on the piston.
  • the gas storage chamber is further provided with a valve.
  • the valve unit includes a one-way valve and a valve; when the pressure difference between the pressure chamber and the air storage chamber is higher than a preset value, the one-way valve is opened, and the gas in the gas chamber is filled into the gas storage chamber; When the pressure in the air reservoir is higher than the pressure in the air chamber, the valve is opened, and the gas in the air reservoir is returned to the air chamber.
  • the static contact module includes a static main contact and a static arc contact;
  • the movable contact module is mounted on the pressure cylinder and includes a moving main contact, a moving arc contact, and a large nozzle. And a small spout, the large spout and the small spout are connected to the pressure chamber.
  • it further includes a piston rod having a cylinder and a pull rod slidably coupled to the piston rod, the piston rod being fixed to the piston and sealed through the air hood.
  • the circuit breaker arc extinguishing chamber comprises a static contact module, a movable contact module, a pressure cylinder and a piston, and a pressure chamber is formed between the piston and the pressure cylinder, the movable contact module and the pressure cylinder are connected together and the piston is pressed through the cylinder
  • the activity can change the volume of the compressor chamber; and the utility model is characterized in that it further comprises a gas storage chamber and a valve unit, the valve unit is arranged between the pressure chamber and the gas storage chamber and: the gas in the gas chamber is filled when the pressure of the pressure chamber is higher than a preset value In the gas storage chamber, when the pressure of the gas storage chamber is higher than the pressure of the gas pressure chamber, the gas in the gas storage chamber is recharged to the gas pressure chamber.
  • the gas in the gas chamber is filled into the gas storage chamber, when the pressure in the gas storage chamber is higher than the pressure in the gas chamber.
  • the gas refilling of the gas chamber can realize the process of first storing and then backfilling the gas in the gas chamber, and the technical problems existing in the background art can be overcome, and the following technical effects are produced: a. avoiding the disconnection When the valve is opened, the air pressure chamber generates excessive air pressure to improve the breaking capacity and product reliability of the circuit breaker; b.
  • the gas storage cover is fixed behind the piston, and the gas storage cover and the piston cooperate to form a gas storage chamber, and the layout is reasonable.
  • the valve unit is installed in the piston, and the structure is simple and the cost is low.
  • FIG. 1 is a diagram showing a medium-arc oscillogram of a switching mode of a conventional plenum type arc extinguishing chamber in the background art, wherein: 1-stroke curve, 2-recovery voltage, 3-breaking current.
  • 2 is a long-arc oscillogram of a switch-off mode of a conventional plenum type arc extinguishing chamber in the background art, wherein: 1-stroke curve, 2-recovery voltage, 3-break current.
  • FIG. 3 is a schematic structural view of an arc extinguishing chamber according to a preferred embodiment, in which the circuit breaker is in a closing position.
  • FIG. 4 is a schematic structural view of an arc extinguishing chamber of a preferred embodiment, in which the circuit breaker is in a trip position.
  • Embodiment 1 please refer to FIG. 3 and FIG. 4, a circuit breaker arc extinguishing chamber, which comprises a static contact module 10, a moving contact module 12, a pressure cylinder 14, a piston 18, a gas storage chamber 22 and a valve unit.
  • the static contact module 10 includes a static main contact 32 and a static arc contact 34 that are coaxially fixed together.
  • the moving contact module 12 includes a moving main contact 36, a moving arc contact 38, a large spout 40 and a small spout 42.
  • the movable contact module 12 and the static contact module 10 are matched, and the contact and the disconnection are controlled by relative motion.
  • the moving main contact 36 and the static main contact 32 are matched, and the moving arc contact 38 and the static arc contact 34 are matched.
  • the cylinder 14 has a cylinder block 50 and a pull rod 60.
  • the cylinder block 50 includes a peripheral wall 51 and a front seat 52 disposed at the front end of the peripheral wall.
  • the movable contact module 12 is mounted on the pressure cylinder 14, and The large spout 40 and the small spout 42 open the pressurizing chamber 20.
  • the pull rod 60 is disposed in the cylinder block 50, and its front end is fixed to the center of the cylinder front seat 52.
  • the cylinder 50 and the tie rod 60 are integrally formed, but not limited thereto, and the cylinder portion and the tie rod portion may be manufactured and reattached as needed.
  • a gas hood 24 is fixed behind the piston 18, and the gas hood 24 and the piston 18 cooperate to form a gas storage chamber 22.
  • a hollow piston rod 44 is fixed to the rear central position of the piston 18. The front end of the piston rod 44 is sealed through the gas storage cover 24, and the piston rod 44 and the gas storage cover 24 are relatively fixed.
  • the peripheral wall of the cylinder 14 is sealed and slidably surrounding the piston 18, so that the compressor chamber 20 is formed between the piston 18 and the cylinder 14.
  • the front seat and the movable contact module 12 of the pressure cylinder 14 are fixed together and the cylinder 50 and the movable contact module 12 are moved relative to the piston 18 by the pull rod 60 to change the volume of the pressure chamber 20.
  • the rear end of the pull rod 60 is sealed and slid into the hole in the piston rod 44, and is connected to the operating mechanism.
  • the valve unit is disposed between the compressor chamber 20 and the gas storage chamber 22.
  • the valve unit is mounted on the piston 18.
  • the valve unit includes a check valve 28 and a valve 30; when the pressure difference between the pressure chamber 20 and the gas storage chamber 22 is higher than a preset value, the check valve 28 is opened, the gas chamber 20 gas is filled into the gas storage chamber 22; When the pressure of the gas storage chamber 22 is higher than the pressure of the pressure chamber 20, the valve 30 is opened, and the gas storage chamber 22 gas is returned to the pressure chamber 20.
  • the setting of the preset value may be considered to maintain the pressure of the pressure chamber in the critical pressure range of 1 to 2 times during the arc extinguishing process, but not limited thereto, and those skilled in the art can select according to the selection. Select the appropriate preset value for the type and characteristics of the circuit breaker.
  • a valve 26 is further disposed in the gas storage chamber 22 to ensure that sufficient gas is present in the pressure chamber during the automatic reclosing of the circuit breaker.
  • the pull rod 60 drives the movable contact module 12 and the cylinder 50 to move backward together, and the gas in the pressure chamber 20 is compressed, and the arc combustion causes the gas to expand.
  • the gas pressure in the pressure chamber 20 rises.
  • the small current is interrupted, since the arc energy is small, the gas pressure rise in the pressure chamber 20 is not high, and the pressure difference between the pressure P1 of the pressure chamber 20 and the pressure P2 of the gas storage chamber 22 is insufficient to open the check valve 28, and the gas is compressed.
  • the chamber 20 is in isolation from the air reservoir 22.
  • the gas pressure in the pressure chamber 20 rises high, and the pressure difference between the pressure P1 of the pressure chamber 20 and the pressure P2 of the gas storage chamber 22 can open the check valve 28, the check valve 28 After being opened, the gas of the pressure chamber 20 is introduced into the gas storage chamber 22, and the pressure P1 and the temperature T1 of the pressure chamber 20 start to decrease, and the pressure P2 and the temperature T2 of the gas storage chamber 22 rise, and when the pressure cylinder 14 continues to move the static arc
  • the contact 34 no longer blocks the large spout 40
  • the gas in the pressurizing chamber 20 is ejected from the spout 40 in a large amount, the pressure P1 of the pressurizing chamber 20 is lowered, and when the pressure P2 of the accumulating chamber 22 is lower, the valve 30 is opened, and the gas storage chamber 22 is opened.
  • the gas in the medium is recharged into the pressure chamber 20, and the air blowing pressure is continued for the arcing to prolong the arcing time.
  • the spring operating mechanism can be used instead of the hydraulic operating mechanism, which has considerable economical efficiency.
  • Embodiment 2 is a circuit breaker arc extinguishing chamber having the same structure as that of Embodiment 1, and is different from Embodiment 1 in that the check valve 28 is opened when the pressure of the pressure chamber 20 is higher than a preset value.
  • the circuit breaker arc extinguishing chamber of the invention is ingeniously designed with a gas storage chamber which can communicate with the pressure chamber.
  • a gas storage chamber which can communicate with the pressure chamber.
  • the pressure difference between the pressure chamber and the gas storage chamber is higher than a preset value
  • the gas in the gas chamber is filled into the gas storage chamber, and when the pressure in the gas storage chamber is higher than the pressure in the gas chamber, the gas in the gas storage chamber is recharged to the gas pressure chamber to realize gas storage.
  • the process of storing and back-compensating the gas in the chamber Avoid excessive air pressure in the pressure chamber when the circuit breaker is opened, reduce the operating work of the operating mechanism, prolong the effective air blowing time of the arc, improve the breaking capacity and product reliability of the circuit breaker, and reduce the cost of the operating mechanism.

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  • Circuit Breakers (AREA)

Abstract

Chambre à extinction d'arc d'un disjoncteur présentant un module de contact statique (10), un module de contact mobile (12), un vérin pneumatique (14), un piston (18), une chambre de stockage d'air (22) et une unité soupape. Une chambre à air (20) est formée entre le piston (18) et le vérin pneumatique (14), le module de contact mobile (12) et le vérin pneumatique (14) étant mutuellement reliés. L'unité soupape est disposée entre la chambre à air (20) et une chambre de stockage d'air (22). Le gaz provenant de la chambre à air est évacué en direction de la chambre de stockage d'air lorsque la différence de pression entre la chambre de stockage d'air et la chambre à air est supérieure à une valeur prédéterminée. Le gaz provenant de la chambre de stockage d'air est renvoyé à la chambre à air lorsque la pression de la chambre de stockage d'air est supérieure à celle de la chambre à air afin de conserver le gaz provenant de la chambre de stockage d'air dans la chambre à air, puis en complément, de le renvoyer vers la chambre de stockage d'air. On évite dès lors, en cas d'ouverture du disjoncteur, une pression d'air excessive dans la chambre à air, ce qui réduit la puissance de fonctionnement du mécanisme de commande avec pour effet un prolongement du soufflage de l'air. La capacité de disjonction du disjoncteur et la fiabilité du produit peuvent être augmentées et le coût du mécanisme de commande peut être réduit.
PCT/CN2011/083633 2011-06-01 2011-12-07 Chambre à extinction d'arc d'un disjoncteur Ceased WO2012163068A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201110147431 CN102306590B (zh) 2011-06-01 2011-06-01 断路器灭弧室
CN201110147431.7 2011-06-01

Publications (1)

Publication Number Publication Date
WO2012163068A1 true WO2012163068A1 (fr) 2012-12-06

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PCT/CN2011/083633 Ceased WO2012163068A1 (fr) 2011-06-01 2011-12-07 Chambre à extinction d'arc d'un disjoncteur

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CN (1) CN102306590B (fr)
WO (1) WO2012163068A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113223890A (zh) * 2021-04-19 2021-08-06 山东泰开高压开关有限公司 一种高压开关断路器
CN113851359A (zh) * 2021-08-18 2021-12-28 西安西电开关电气有限公司 具有旋转单向阀的自能式断路器
CN114264944A (zh) * 2021-12-02 2022-04-01 西安高压电器研究院有限责任公司 一种用于测量断路器断口间电弧形态的实验装置
CN114758921A (zh) * 2021-12-23 2022-07-15 平高集团有限公司 一种灭弧室及使用该灭弧室的断路器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103311049B (zh) * 2012-03-07 2015-11-25 厦门华电开关有限公司 断路器灭弧室及其静弧触头
CN104143467B (zh) * 2013-09-30 2017-07-21 国家电网公司 一种压气式灭弧装置及使用该灭弧装置的高压断路器
CN104963819A (zh) * 2015-06-09 2015-10-07 安庆卡尔特压缩机有限公司 一种新型压缩机
CN106710961B (zh) * 2017-02-10 2019-04-26 平高集团有限公司 断路器及其灭弧室、喷口
CN108172462A (zh) * 2017-11-28 2018-06-15 河南大盛高压电气有限公司 一种活塞压缩式灭弧装置

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CN1008415B (zh) * 1985-09-30 1990-06-13 Bbc勃朗勃威力有限公司 气吹开关
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CN201315287Y (zh) * 2008-11-19 2009-09-23 平高集团有限公司 双室热膨胀自能型六氟化硫断路器灭弧室及其气缸
CN202102959U (zh) * 2011-06-01 2012-01-04 厦门华电开关有限公司 一种断路器灭弧室

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CN1008415B (zh) * 1985-09-30 1990-06-13 Bbc勃朗勃威力有限公司 气吹开关
EP0334008A2 (fr) * 1988-03-25 1989-09-27 Licentia Patent-Verwaltungs-GmbH Interrupteur mono-pression à SF6
CN1182558C (zh) * 1998-01-29 2004-12-29 东芝株式会社 气体电路断路器
JP2004119344A (ja) * 2002-09-30 2004-04-15 Mitsubishi Electric Corp ガス遮断器
CN201315287Y (zh) * 2008-11-19 2009-09-23 平高集团有限公司 双室热膨胀自能型六氟化硫断路器灭弧室及其气缸
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113223890A (zh) * 2021-04-19 2021-08-06 山东泰开高压开关有限公司 一种高压开关断路器
CN113851359A (zh) * 2021-08-18 2021-12-28 西安西电开关电气有限公司 具有旋转单向阀的自能式断路器
CN114264944A (zh) * 2021-12-02 2022-04-01 西安高压电器研究院有限责任公司 一种用于测量断路器断口间电弧形态的实验装置
CN114264944B (zh) * 2021-12-02 2024-02-06 西安高压电器研究院股份有限公司 一种用于测量断路器断口间电弧形态的实验装置
CN114758921A (zh) * 2021-12-23 2022-07-15 平高集团有限公司 一种灭弧室及使用该灭弧室的断路器
CN114758921B (zh) * 2021-12-23 2024-03-26 平高集团有限公司 一种灭弧室及使用该灭弧室的断路器

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CN102306590A (zh) 2012-01-04

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