CN106024506A - SF6 breaker pneumatic explosion chamber - Google Patents

SF6 breaker pneumatic explosion chamber Download PDF

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Publication number
CN106024506A
CN106024506A CN201610478380.9A CN201610478380A CN106024506A CN 106024506 A CN106024506 A CN 106024506A CN 201610478380 A CN201610478380 A CN 201610478380A CN 106024506 A CN106024506 A CN 106024506A
Authority
CN
China
Prior art keywords
contact
cylinder
tubular
static
arc
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.)
Pending
Application number
CN201610478380.9A
Other languages
Chinese (zh)
Inventor
冯庆游
黄国强
沈泽新
郭顺彬
冼锐添
冯镇达
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.)
Guangzhou Baiyun Electric Equipment Co Ltd
Original Assignee
Guangzhou Baiyun Electric Equipment 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 Guangzhou Baiyun Electric Equipment Co Ltd filed Critical Guangzhou Baiyun Electric Equipment Co Ltd
Priority to CN201610478380.9A priority Critical patent/CN106024506A/en
Publication of CN106024506A publication Critical patent/CN106024506A/en
Pending legal-status Critical Current

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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
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
    • 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/22—Selection of fluids for arc-extinguishing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Landscapes

  • Circuit Breakers (AREA)

Abstract

The invention provides an SF6 breaker pneumatic explosion chamber. The SF6 breaker pneumatic explosion chamber comprises a static contact module and a moving contact module, wherein the static contact module comprises a static arc contact, the moving contact module comprises a pneumatic cylinder, a moving arc contact and a tubular nozzle, the moving arc contact and the tubular nozzle are respectively connected with a bottom of the pneumatic cylinder, a pneumatic chamber is formed between the bottom of the pneumatic cylinder and a piston, an inner hole of the tubular nozzle is communicated with the pneumatic chamber, the moving arc contact is in matching with the static arc contact, and the piston of the pneumatic cylinder is provided with multiple one-way check valve units realizing air incoming towards the pneumatic chamber. When a breaker carries out automatic reclosing operation, pressure of internal air of the pneumatic chamber is lower than external air pressure, the one-way check valve units are open, the external air enters the pneumatic chamber through the one-way check valve units to enhance air volume of the pneumatic chamber, and a problem of decrease of arc quenching capability during second opening of an explosion chamber is solved.

Description

A kind of SF6Chopper air pressing type arc-chutes
Technical field
The present invention relates to a kind of arc-chutes, particularly relate to a kind of SF6Chopper air pressing type arc-chutes.
Background technology
SF6Chopper air pressing type arc-chutes are that the gas in pressured contractive pressure air chamber completes electric arc to produce air-flow Extinguishing.Existing SF6Chopper air pressing type arc-chutes include static contact module, motive contact module, moving contact Plenum chamber is formed between cylinder bottom and the piston of the air cylinder cylinder body in module.Moving arcing contact and the cylinder body of air cylinder Link together and drive moving arcing contact opposing pistons to move by the cylinder body of air cylinder, to change plenum chamber appearance Long-pending.When chopper carries out closing operation, plenum chamber volume becomes big, the SF beyond plenum chamber6Gas touches through dynamic The hole at head module center enters plenum chamber；When chopper carries out sub-switching operation, plenum chamber volume diminishes, and calms the anger Indoor SF6Gas is compressed and pressure raises.When static contact module separates generation electric arc with motive contact module Time, plenum chamber inner high voltage SF6Electric arc is extinguished in gas ejection；When chopper carries out automatic reclosing operation, i.e. -300ms-is divided to close-point operation, owing to closing operation is extremely short with second time sub-switching operation time interval, the longest only 60ms.In the interval that this is of short duration, entered the SF of plenum chamber by the hole at motive contact module center6Gas flow is not Foot, causes when second time sub-switching operation, and the plenum chamber amount of calming the anger is not enough, reduces arc-chutes and extinguishes arc energy Power.
Summary of the invention
The technical problem to be solved, it is simply that a kind of SF is provided6Chopper air pressing type arc-chutes, its energy Quickly supplement plenum chamber tolerance when closing a floodgate, improve arc-chutes and extinguish electric arc ability.
Solving above-mentioned technical problem, the present invention uses following technical scheme: a kind of SF6 chopper air pressing type Arc-chutes, including: static contact module and motive contact module, described static contact module includes static arc contact, institute State motive contact module and include air cylinder, moving arcing contact and tubular nozzle, described moving arcing contact and described tubulose Nozzle all cylinder bottoms with described air cylinder are connected, and form plenum chamber, tubulose between cylinder bottom and the piston of air cylinder The endoporus of nozzle is interconnected with plenum chamber, and described moving arcing contact coordinates with described static arc contact, air cylinder Some one-way cock unit of plenum chamber air inlet it are provided with on piston.
Further, described one-way cock unit comprises a jump ring, a spring and a steel ball, on described piston Offering stepped hole, stepped hole includes a macropore and an aperture, and one-way cock unit is arranged on described stepped hole In, described jump ring is connected with the big nose end of piston, and described steel ball is connected with described jump ring by described spring, When plenum chamber internal gas pressure is more than the external gas pressure, described steel ball is blocked between macropore and aperture, One-way cock unit is closed, and the gas in plenum chamber cannot be discharged by one-way cock unit；When in plenum chamber When portion's gas pressure is less than the external gas pressure, in described steel ball retraction macropore, one-way cock unit is opened, Extraneous gas enters plenum chamber by one-way cock unit.
Further, described static contact module comprises a shaft-like static arc contact and a tubular static contact finger, and quiet arc touches Head is plugged in static contact finger, and its one end is fixed at the bottom of the cylinder of static contact finger.
Further, described motive contact module also includes the movable contact block of a tubular, has hole, described pressure at the bottom of cylinder Have at the bottom of the cylinder that cylinder includes hollow tubular cylinder body, be located at hollow tubular cylinder interior hole tubular guide post, It is socketed in the annular piston between described hollow tubular cylinder body with described tubular guide post and is connected annular piston The trunk-piston bar having axially extending bore and radial hole, trunk-piston bar is away from the one of described annular piston End is connected with described movable contact block, shape between cylinder top and the front end of described hollow tubular cylinder body of tubular guide post Becoming mesopore, the outer wall of described hollow tubular cylinder body is slidably connected with described movable contact block.
Further, described moving arcing contact is connected with hollow tubular cylinder base.
Further, the rear end of described tubular nozzle is connected between hollow tubular cylinder body and moving arcing contact, tubulose The endoporus front end of nozzle be flared hole that outer imperial palace is little, rear end be circular port, outside the rear end of tubular nozzle Side is connected with hollow tubular cylinder body interference, between inner side and the described moving arcing contact external diameter of the rear end of tubular nozzle Leave gap (forming little jet cavity), the flared hole minimum diameter of tubular nozzle front end and described bar Shape static arc contact coordinates (forming big jet cavity when separating brake).
Further, the quantity of described one-way cock unit is at least two.
Further, one-way cock unit is evenly distributed on piston.
The invention have the benefit that, when chopper carries out sub-switching operation, plenum chamber volume diminishes, plenum chamber Interior SF6Gas is compressed and pressure raises, and one-way cock unit remains turned-off, and does not affect arc-chutes and extinguishes electricity Arc ability.When chopper carries out automatic reclosing operation, between closing operation and second time sub-switching operation time Every extremely short, entered the SF of plenum chamber by the hole at motive contact module center6Gas flow is not enough, in causing plenum chamber Portion's gas pressure is less than the external gas pressure, and one-way cock unit is opened, and extraneous gas is through one-way cock unit Entering plenum chamber, in making plenum chamber, gas flow increases, and extinguishes arc energy when solving arc-chutes second time separating brake The problem that power declines.
Accompanying drawing explanation
Fig. 1 is a kind of SF6The generalized section of chopper air pressing type arc-chutes, now arc-chutes are in sub-gate position Put；
Fig. 2 is a kind of SF6The generalized section of chopper air pressing type arc-chutes, now arc-chutes are in and closed a floodgate Journey just closes position；
Fig. 3 is a kind of SF6The generalized section of chopper air pressing type arc-chutes, now arc-chutes are in closing position Put；
Fig. 4 is SF6The state signal during separating brake of the one-way cock unit of chopper air pressing type arc-chutes Figure；
Fig. 5 is SF6The state signal in making process of the one-way cock unit of chopper air pressing type arc-chutes Figure；
Fig. 6 is SF6The generalized section of the hollow tubular cylinder body of chopper air pressing type arc-chutes.
In figure: 1-static contact module, 2-static arc contact, 3-static contact finger, 4-tubular nozzle, 5-tubular nozzle Rear end, 6-moving arcing contact, 7-hollow tubular cylinder body, 8-one-way cock unit, 10-trunk-piston bar；11- Tubular guide post, 12-piston, 13-plenum chamber, 16-motive contact module, 17-jump ring, 18-spring, 19-steel Ball, 20-perforate, 21-movable contact block.
Detailed description of the invention
As shown in Figure 1, 2, 3, a kind of SF6 chopper air pressing type arc-chutes, including: static contact module 1 With motive contact module 16, described static contact module 1 includes that static arc contact 2, described motive contact module 16 include Air cylinder, moving arcing contact 6 and tubular nozzle 4, moving arcing contact 6 and tubular nozzle 4 all with the cylinder of air cylinder The end connect, between cylinder bottom and the piston 12 of air cylinder formed plenum chamber 13, the endoporus of tubular nozzle 4 with calm the anger Room 13 is interconnected, and described moving arcing contact 6 coordinates with described static arc contact 2, on the piston 12 of air cylinder It is provided with some one-way cock unit 8 of plenum chamber 13 air inlet.
As shown in Figure 4,5, described one-way cock unit 8 comprises jump ring 17, spring 18 and a steel Ball 19, described piston 12 offers stepped hole, and stepped hole includes a macropore and an aperture, one-way cock list Unit 8 is arranged in described stepped hole, and described jump ring 17 is connected with the big nose end of piston 12, described steel ball 19 It is connected with described jump ring 17 by described spring 18, when plenum chamber 13 internal gas pressure is more than extraneous gas During pressure, described steel ball 19 is blocked between macropore and aperture, and one-way cock unit 8 is closed, plenum chamber 13 Interior gas cannot be discharged by one-way cock unit 8；When plenum chamber 13 internal gas pressure is less than outside gas During body pressure, described steel ball 19 is retracted in macropore, and one-way cock unit 8 is opened, and extraneous gas is by unidirectional Valve unit 8 enters plenum chamber.
Described static contact module 1 comprises shaft-like static arc contact 2 and a tubular static contact finger 3, a static arc contact 2 Being plugged in static contact finger 3, its one end is fixed at the bottom of the cylinder of static contact finger 3.
Described motive contact module 16 also includes the movable contact block 21 of a tubular, has hole, described air cylinder at the bottom of cylinder Including hollow tubular cylinder body 7, be located at have at the bottom of the cylinder within hollow tubular cylinder body 7 hole tubular guide post 11, It is socketed in the annular piston 12 between described hollow tubular cylinder body 7 with described tubular guide post 11 and is connected ring The trunk-piston bar 10 having axially extending bore and radial hole of shape piston 12, trunk-piston bar 10 is away from institute The one end stating annular piston 12 is connected with described movable contact block 21, the cylinder top of tubular guide post 11 and described sky Forming mesopore between the front end of central, tubular cylinder body 7, the outer wall of described hollow tubular cylinder body 7 is dynamic tactile with described Headstock 21 is slidably connected.
Described moving arcing contact 6 is connected bottom hollow tubular cylinder body 7.
The rear end 5 of described tubular nozzle is connected between hollow tubular cylinder body 7 and moving arcing contact 6, and tubulose sprays The endoporus front end of mouth 4 be flared hole that outer imperial palace is little, rear end be circular port, outside tubular nozzle 4 rear end Side is connected with hollow tubular cylinder body 7 interference, outside the inner side of the rear end 5 of tubular nozzle is with described moving arcing contact 6 Leave gap (forming little jet cavity) between footpath, the flared hole minimum diameter of tubular nozzle front end with Described shaft-like static arc contact 2 coordinates (forming big jet cavity when separating brake).
The quantity of described one-way cock unit 8 is at least two, and in the present embodiment, one-way cock unit 8 is uniform It is distributed on piston 12.
Operation principle: when chopper carries out sub-switching operation, tubular nozzle 4 drives moving arcing contact 6, tubular to live Stopper rod 10 and hollow tubular cylinder body 7 rearward movement together, plenum chamber 13 volume reduces, in plenum chamber 13 Gas compressed, gas pressure rise, one-way cock unit 8 remains off, in plenum chamber 13 Gas pressure persistently rises, and static arc contact 2 produces electric arc after separating with moving arcing contact 6, high in plenum chamber 13 Calm the anger body through passage K (passage that tubular nozzle endoporus and plenum chamber are formed) from tubular nozzle 4 flared hole Ejection, puts out electric arc.
When chopper carries out automatic reclosing operation, close a floodgate through 300ms after chopper separating brake for the first time Operation, tubular nozzle 4 drives moving contact 6, trunk-piston bar 10 and hollow tubular cylinder body 7 the most forward Motion, plenum chamber 13 volume becomes big, and the gas pressure in plenum chamber 13 reduces relative to outside, outside gas Body is entered plenum chamber 13 by tubular nozzle 4 flared hole through circular port, when closing a floodgate to just conjunction position, and quiet arc Contact 3 plugs the flared hole minimum diameter of tubular nozzle 4, and gas enters the passage of plenum chamber 13 and hindered Keeping off, hollow tubular cylinder body 7, moving contact 6 move forward, and the gas pressure in plenum chamber 13 is with outside The difference of gas pressure expands further, and now one-way cock unit 8 is opened because of bigger pressure differential, outside Gas enters plenum chamber 13 through one-way cock unit 8, owing to inlet channel increases, it is ensured that plenum chamber 13 exists Suck enough gas in very short time, cause going out because the amount of calming the anger is not enough when solving second time sub-switching operation Arc chamber extinguishes the problem that electric arc ability declines.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims (8)

1. a SF6Chopper air pressing type arc-chutes, including: static contact module and motive contact module, described static contact module includes static arc contact, described motive contact module includes air cylinder, moving arcing contact and tubular nozzle, described moving arcing contact and described tubular nozzle all cylinder bottoms with described air cylinder are connected, plenum chamber is formed between cylinder bottom and the piston of air cylinder, the endoporus of tubular nozzle is interconnected with plenum chamber, described moving arcing contact coordinates with described static arc contact, it is characterised in that: it is provided with some one-way cock unit of plenum chamber air inlet on the piston of air cylinder.
2. SF as claimed in claim 16Chopper air pressing type arc-chutes, it is characterized in that: described one-way cock unit comprises a jump ring, one spring and a steel ball, stepped hole is offered on described piston, stepped hole includes a macropore and an aperture, one-way cock unit is arranged in described stepped hole, described jump ring is connected with the big nose end of piston, described steel ball is connected with described jump ring by described spring, when plenum chamber internal gas pressure is more than the external gas pressure, described steel ball is blocked between macropore and aperture, one-way cock unit is closed, gas in plenum chamber cannot be discharged by one-way cock unit；When plenum chamber internal gas pressure is less than the external gas pressure, in described steel ball retraction macropore, one-way cock unit is opened, and extraneous gas enters plenum chamber by one-way cock unit.
3. SF as claimed in claim 16Chopper air pressing type arc-chutes, it is characterised in that: described static contact module comprises a shaft-like static arc contact and a tubular static contact finger, and static arc contact is plugged in static contact finger, and its one end is fixed at the bottom of the cylinder of static contact finger.
4. SF as claimed in claim 36Chopper air pressing type arc-chutes, it is characterized in that: described motive contact module also includes the movable contact block of a tubular, the cylinder end, has hole, described air cylinder includes hollow tubular cylinder body, it is located at the tubular guide post having hole at the bottom of the cylinder of hollow tubular cylinder interior, it is socketed in the annular piston between described hollow tubular cylinder body with described tubular guide post and is connected the trunk-piston bar having axially extending bore and radial hole of annular piston, trunk-piston bar is connected with described movable contact block away from one end of described annular piston, mesopore is formed between cylinder top and the front end of described hollow tubular cylinder body of tubular guide post, the outer wall of described hollow tubular cylinder body is slidably connected with described movable contact block.
5. SF as claimed in claim 46Chopper air pressing type arc-chutes, it is characterised in that: described moving arcing contact is connected with the bottom of hollow tubular cylinder body.
6. SF6 chopper air pressing type arc-chutes as claimed in claim 5, it is characterized in that: the rear end of described tubular nozzle is connected between hollow tubular cylinder body and moving arcing contact, the endoporus front end of tubular nozzle be flared hole that outer imperial palace is little, rear end be circular port, the outside of the rear end of tubular nozzle is connected with hollow tubular cylinder body interference, leaving gap between inner side and the described moving arcing contact external diameter of the rear end of tubular nozzle, the flared hole minimum diameter of tubular nozzle front end coordinates with described shaft-like static arc contact.
7. SF as claimed in claim 1 or 26Chopper air pressing type arc-chutes, it is characterised in that: the quantity of described one-way cock unit is at least two.
8. SF as claimed in claim 76Chopper air pressing type arc-chutes, it is characterised in that: one-way cock unit is evenly distributed on piston.
CN201610478380.9A 2016-06-24 2016-06-24 SF6 breaker pneumatic explosion chamber Pending CN106024506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610478380.9A CN106024506A (en) 2016-06-24 2016-06-24 SF6 breaker pneumatic explosion chamber

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CN201610478380.9A CN106024506A (en) 2016-06-24 2016-06-24 SF6 breaker pneumatic explosion chamber

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109767950A (en) * 2017-11-09 2019-05-17 河南平芝高压开关有限公司 A kind of self-energy arc-extinguishing chamber and the breaker using the arc-chutes
CN112289628A (en) * 2020-10-20 2021-01-29 西安西电开关电气有限公司 Arc extinguish chamber with double pressure expansion chambers
CN113757421A (en) * 2020-06-05 2021-12-07 平高集团有限公司 Piston one-way valve structure for high-voltage switch, quick grounding switch and GIS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070272658A1 (en) * 2006-05-29 2007-11-29 Abb Technology Ag Puffer circuit breaker with an overpressure valve
CN201673856U (en) * 2010-05-19 2010-12-15 中国西电电气股份有限公司 Airflow control device of breaker
CN102177565A (en) * 2008-10-09 2011-09-07 法国阿海珐集团输配电自动中心 Cutoff chamber for high-voltage circuit breaker with improved arc quenching
CN205752009U (en) * 2016-06-24 2016-11-30 广州白云电器设备股份有限公司 A kind of SF6chopper air pressing type arc-chutes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070272658A1 (en) * 2006-05-29 2007-11-29 Abb Technology Ag Puffer circuit breaker with an overpressure valve
CN102177565A (en) * 2008-10-09 2011-09-07 法国阿海珐集团输配电自动中心 Cutoff chamber for high-voltage circuit breaker with improved arc quenching
CN201673856U (en) * 2010-05-19 2010-12-15 中国西电电气股份有限公司 Airflow control device of breaker
CN205752009U (en) * 2016-06-24 2016-11-30 广州白云电器设备股份有限公司 A kind of SF6chopper air pressing type arc-chutes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109767950A (en) * 2017-11-09 2019-05-17 河南平芝高压开关有限公司 A kind of self-energy arc-extinguishing chamber and the breaker using the arc-chutes
CN113757421A (en) * 2020-06-05 2021-12-07 平高集团有限公司 Piston one-way valve structure for high-voltage switch, quick grounding switch and GIS
CN112289628A (en) * 2020-10-20 2021-01-29 西安西电开关电气有限公司 Arc extinguish chamber with double pressure expansion chambers

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Application publication date: 20161012

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