CN105977096A - SF6 circuit breaker arc extinguish chamber - Google Patents
SF6 circuit breaker arc extinguish chamber Download PDFInfo
- Publication number
- CN105977096A CN105977096A CN201610486095.1A CN201610486095A CN105977096A CN 105977096 A CN105977096 A CN 105977096A CN 201610486095 A CN201610486095 A CN 201610486095A CN 105977096 A CN105977096 A CN 105977096A
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- Prior art keywords
- contact
- arc
- tubular
- hole
- cylinder
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- 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.)
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Classifications
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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
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- Circuit Breakers (AREA)
Abstract
The invention proposes an SF6 circuit breaker arc extinguish chamber, and the arc extinguish chamber comprises a static contact module and a moving contact module. The static contact module comprises a static arc contact, and the moving contact module comprises an air cylinder, a moving arc contact, and a tubular nozzle. The moving arc contact and the tubular nozzle are respectively connected with the bottom of the air cylinder, and an air compression chamber is formed between the bottom of the air cylinder and a piston. An inner hole of the tubular nozzle is communicated with the air compression chamber. The moving arc contact cooperates with the static arc contact, and the piston of the air cylinder is provided with a unidirectional valve which supplies air to the air compression chamber. The arc extinguish chamber can quickly supplement air for the air compression chamber during switching-on, and improves the arc extinguish capability.
Description
Technical field
The present invention relates to a kind of SF6Arc-extinguishing chamber of circuit breaker.
Background technology
SF6Arc-extinguishing chamber of circuit breaker is that the gas in pressured contractive pressure air chamber completes the extinguishing to electric arc to produce air-flow
's.Existing SF6Arc-extinguishing chamber of circuit breaker includes static contact module, motive contact module, calming the anger in motive contact module
Plenum chamber is formed between cylinder bottom and the piston of cylinder cylinder body.The cylinder body of moving arcing contact and air cylinder link together and
Moving arcing contact opposing pistons is driven to move, to change plenum chamber volume by the cylinder body of air cylinder.Chopper enters
During row closing operation, plenum chamber volume becomes big, the SF beyond plenum chamber6Gas is through motive contact module center
Hole enters plenum chamber；When chopper carries out sub-switching operation, plenum chamber volume diminishes, the SF in plenum chamber6Gas
By compression, pressure raises.When static contact module separates generation electric arc with motive contact module, high in plenum chamber
Pressure SF6Electric arc is extinguished in gas ejection；When chopper carry out automatic reclosing operation time, i.e. divide-300ms-close-point
Operation, owing to closing operation is extremely short with second time sub-switching operation time interval, the longest only 60ms.Short at this
In temporary interval, entered the SF of plenum chamber by the hole at motive contact module center6Gas flow is not enough, causes the
During secondary sub-switching operation, the plenum chamber amount of calming the anger is not enough, reduces arc-chutes and extinguishes electric arc ability.
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 SF6Arc-extinguishing chamber of circuit breaker,
Including: static contact module and motive contact module, described static contact module includes static arc contact, described moving contact
Module include air cylinder, moving arcing contact and tubular nozzle, described moving arcing contact and described tubular nozzle all with
The cylinder bottom of described air cylinder connects, and forms plenum chamber between cylinder bottom and the piston of air cylinder, tubular nozzle interior
Hole is interconnected with plenum chamber, and described moving arcing contact coordinates with described static arc contact, and the piston of air cylinder sets
There is the one-way cock towards plenum chamber air inlet.
Further, described piston is positioned at plenum chamber one end and is provided with annular groove, is provided with some logical in annular groove
Pore, described one-way cock comprises an annular valve block and at least two locking returning device, in annular groove not
The position arranging passage is provided with the locking returning device installing hole identical with locking returning device quantity, institute
Stating annular valve block and be provided with the through hole corresponding with locking returning device installing hole, described annular valve block is positioned at ring
In connected in star, described locking returning device includes bolt, spring and nut, and described bolt is from plenum chamber
Side is connected with nut after sequentially passing through the through hole of annular valve block, locking returning device installing hole, spring, institute
State that bolt is fixing with described annular valve block to be connected.
Operation principle: by rotating the deflection of nut regulation spring, it is ensured that annular valve block in its natural state
It is adjacent to bottom the annular groove of piston, makes one-way cock be in normally off；When gas pressure inside of calming the anger is big
Passage when the external gas pressure, in annular valve block blocking annular groove；When gas pressure inside of calming the anger
During less than the external gas pressure, spring is compressed, and annular valve block separates with groove, and extraneous gas enters and calms the anger
Room.
Further, described passage is ring-shaped ventilation hole, and described locking returning device installing hole and through hole are
Circular hole.
Further, the quantity of described locking returning device is three.
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 hollow tubular cylinder body is slidably connected with described movable contact block.
Further, described moving arcing contact is connected with the bottom of hollow tubular cylinder body.
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, the outside of tubular nozzle rear end
It is connected with hollow tubular cylinder body interference, leaves between inner side and the described moving arcing contact external diameter of tubular nozzle rear end
Gap (forms little jet cavity), and the flared hole minimum diameter of tubular nozzle front end is shaft-like quiet with described
Arcing contact coordinates (forming big jet cavity when separating brake).
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 remains turned-off, and does not affect arc-chutes and extinguishes arc energy
Power.When chopper carries out automatic reclosing operation, closing operation and second time sub-switching operation time interval pole
Short, the SF of plenum chamber is entered by the hole at motive contact module center6Gas flow is not enough, causes the internal gas of plenum chamber
Body pressure is less than the external gas pressure, and one-way cock is opened, and extraneous gas enters plenum chamber through one-way cock,
In making plenum chamber, gas flow increases, and extinguishes, when solving arc-chutes second time separating brake, the problem that electric arc ability declines.
Accompanying drawing explanation
Fig. 1 is a kind of SF6The generalized section of arc-extinguishing chamber of circuit breaker, now arc-chutes are in open position；
Fig. 2 is a kind of SF6The generalized section of arc-extinguishing chamber of circuit breaker, during now arc-chutes are in making process
Just close position；
Fig. 3 is a kind of SF6The generalized section of arc-extinguishing chamber of circuit breaker, now arc-chutes are in closing position；
Fig. 4 is SF6The one-way cock of arc-extinguishing chamber of circuit breaker profile status figure during separating brake；
Fig. 5 is SF6The one-way cock of arc-extinguishing chamber of circuit breaker profile status figure in making process；
Fig. 6 is SF6The schematic front view of the piston of arc-extinguishing chamber of circuit breaker；
Fig. 7 is SF6The schematic front view of the annular valve block of arc-extinguishing chamber of circuit breaker；
Fig. 8 is SF6The schematic front view of the moving arcing contact of arc-extinguishing chamber of circuit breaker；
Fig. 9 is SF6The hollow tubular cylinder body generalized section of arc-extinguishing chamber of circuit breaker.
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, 10-trunk-piston bar, 11-tubular is led
To bar, 12-piston, 13-plenum chamber, 16-motive contact module, 17-valve block, 18-spring, 19-bolt, 20-
Nut, 21-hole, 22-movable contact block；23-locks returning device installing hole；24-through hole；25-ring-shaped ventilation hole；
26-annular groove.
Detailed description of the invention
As Figure 1-3, a kind of SF6Arc-extinguishing chamber of circuit breaker, including: static contact module 1 and motive contact module
16, static contact module 1 include static arc contact 2, motive contact module 16 include air cylinder, moving arcing contact 6 with
And tubular nozzle 4, the cylinder bottom of moving arcing contact 6 and air cylinder is all connected with the rear end 5 of tubular nozzle, air cylinder
Cylinder bottom and piston 12 between form the endoporus of plenum chamber tubular nozzle 4 and be interconnected with plenum chamber, dynamic arc is tactile
6 coordinate with static arc contact 2, and the piston 12 of air cylinder is provided with the one-way cock 8 of plenum chamber air inlet.
As shown in figs. 4-7, piston 12 is positioned at plenum chamber one end and is provided with annular groove 26, in annular groove 26
Being provided with some passages 25, one-way cock 8 comprises an annular valve block 17 and at least two locking returning device,
The position being not provided with passage 25 in annular groove 26 is provided with the locking identical with locking returning device quantity
Returning device installing hole 23, annular valve block 17 is provided with lead to corresponding with locking returning device installing hole 23
Hole 24, annular valve block 17 is positioned in annular groove 26, and locking returning device includes bolt 19, spring 18
And nut 20, bolt 19 sequentially passes through the through hole 24 of annular valve block 17, locks back from the side of plenum chamber
Being connected with nut 19 after position device installing hole 23, spring 18, bolt 19 is fixed with described annular valve block 17
Connect.
Passage is ring-shaped ventilation hole 25, and locking returning device installing hole 23 and through hole 24 are circular hole.
The quantity locking returning device in the present embodiment is three.
As Figure 1-3, static contact module 1 comprises shaft-like static arc contact 2 and a tubular static contact finger 3,
Static arc contact 2 is plugged in static contact finger 3, and its one end is fixed at the bottom of the cylinder of static contact finger 3.
Described motive contact module also includes the movable contact block of a tubular, has hole at the bottom of cylinder, and air cylinder includes hollow
Tubular cylinder 7, be located at have at the bottom of the cylinder within hollow tubular cylinder body 7 hole 21 tubular guide post 11, socket
Annular piston 12 between described hollow tubular cylinder body 7 and tubular guide post 11 and be connected annular piston
The trunk-piston bar 10 having axially extending bore and radial hole of 12, trunk-piston bar 10 is away from described annular
One end of piston 12 is connected with described movable contact block 22, the cylinder top of tubular guide post 11 and described hollow tubular
Forming mesopore between the front end of cylinder body 7, the outer wall of hollow tubular cylinder body 7 slides with described movable contact block 22
Connect.The endoporus of tubular nozzle 4 is interconnected with plenum chamber by mesopore.
Described moving arcing contact is connected with the bottom of hollow tubular cylinder body.The rear end 5 of described tubular nozzle is connected to hollow tubular cylinder
Between body 7 and moving arcing contact 6, the endoporus front end of tubular nozzle 4 is flared hole, the rear end that outer imperial palace is little
For circular port, the outside of tubular nozzle 4 rear end is connected with hollow tubular cylinder body 7 interference, after tubular nozzle 4
Gap (forming little jet cavity), tubulose is left between inner side and described moving arcing contact 6 external diameter of end
The flared hole minimum diameter of spray nozzle front end coordinates with described shaft-like static arc contact 2 and (forms big spray when separating brake
Mouth jet cavity).
Operation principle:
When chopper carries out sub-switching operation, tubular nozzle 4 drive moving arcing contact 6, trunk-piston bar 11 with
And hollow tubular cylinder body 7 rearward movement together, plenum chamber 13 volume reduces, the gas quilt in plenum chamber 13
Compression, gas pressure rises, and one-way cock 8 remains off, and the gas pressure in plenum chamber 13 continues
Rising, static arc contact 2 produces electric arc after separating with moving arcing contact 6, and plenum chamber 13 inner high voltage gas is from tubulose
Nozzle 4 flared hole sprays, and 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 11 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 8 is opened, extraneous gas because of bigger pressure differential
Plenum chamber 13 is entered, owing to inlet channel increases, it is ensured that plenum chamber 13 is in very short time through one-way cock 8
The gas that interior suction is enough, causes arc-chutes to extinguish because the amount of calming the anger is not enough when solving second time sub-switching operation
The problem that electric arc ability declines.
The deflection of spring 18 is regulated, it is ensured that annular valve block 17 in its natural state by rotating nut 19
It is adjacent to bottom the annular groove 26 of piston, makes one-way cock 8 be in normally off；When indoor gas pressure of calming the anger
When power is more than the external gas pressure, annular valve block 17 blocks the passage 25 in annular groove 26；When calming the anger
When gas pressure inside is less than the external gas pressure, spring 18 is compressed, annular valve block 17 and groove 26 points
From, extraneous gas enters plenum chamber.
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 SF6Arc-extinguishing chamber of circuit breaker, including: static contact module and motive contact module, described static contact
Module includes that static arc contact, described motive contact module include air cylinder, moving arcing contact and tubular nozzle, institute
State moving arcing contact and the described tubular nozzle cylinder bottom all with described air cylinder to be connected, the cylinder bottom of air cylinder and piston
Between formed plenum chamber, the endoporus of tubular nozzle is interconnected with plenum chamber, and described moving arcing contact is quiet with described
Arcing contact coordinates, it is characterised in that: it is provided with the one-way cock of plenum chamber air inlet on the piston of air cylinder.
2. SF as claimed in claim 16Arc-extinguishing chamber of circuit breaker, it is characterised in that: described piston is positioned at pressure
Air chamber one end is provided with annular groove, is provided with some passages in annular groove, and described one-way cock comprises a ring
Shape valve block and at least two locking returning device, the position being not provided with passage in annular groove is provided with and locks
The locking returning device installing hole that tight returning device quantity is identical, described annular valve block is provided with and locks return
The through hole that device installing hole is corresponding, described annular valve block is positioned in annular groove, described locking returning device
Including bolt, spring and nut, described bolt sequentially pass through from the side of plenum chamber annular valve block through hole,
Being connected with nut after locking returning device installing hole, spring, described bolt is fixing with described annular valve block to be connected.
3. SF as claimed in claim 26Arc-extinguishing chamber of circuit breaker, it is characterised in that: described passage is ring
Shape passage, described locking returning device installing hole and through hole are circular hole.
4. SF as claimed in claim 26Arc-extinguishing chamber of circuit breaker, it is characterised in that: described locking return fills
The quantity put is three.
5. SF as claimed in claim 16Arc-extinguishing chamber of circuit breaker, it is characterised in that: described stationary contact head mould
Block 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 solid
It is scheduled at the bottom of the cylinder of static contact finger.
6. SF as claimed in claim 56Arc-extinguishing chamber of circuit breaker, it is characterised in that: described motive contact module
Also including the movable contact block of a tubular, have hole at the bottom of cylinder, described air cylinder includes hollow tubular cylinder body, is located at
Have the tubular guide post in hole at the bottom of the cylinder of hollow tubular cylinder interior, be socketed in described hollow tubular cylinder body and institute
State the annular piston between tubular guide post and connect annular piston have axially extending bore and radial hole
Trunk-piston bar, trunk-piston bar is connected with described movable contact block away from one end of described annular piston, tubular
Mesopore is formed, outside hollow tubular cylinder body between cylinder top and the front end of described hollow tubular cylinder body of guide post
Wall is slidably connected with described movable contact block.
7. SF as claimed in claim 66Arc-extinguishing chamber of circuit breaker, it is characterised in that: described moving arcing contact with
The bottom of hollow tubular cylinder body connects.
8. SF as claimed in claim 76Arc-extinguishing chamber of circuit breaker, it is characterised in that: described tubular nozzle
Rear end is connected between hollow tubular cylinder body and moving arcing contact, and the endoporus front end of tubular nozzle is that outer imperial palace is little
Flared hole, rear end are circular port, and the outside of tubular nozzle rear end is connected with hollow tubular cylinder body interference, pipe
Gap is left, tubular nozzle front end tubaeform between inner side and the described moving arcing contact external diameter of shape nozzle rear end
Hole minimum diameter coordinates with described shaft-like static arc contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486095.1A CN105977096A (en) | 2016-06-24 | 2016-06-24 | SF6 circuit breaker arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486095.1A CN105977096A (en) | 2016-06-24 | 2016-06-24 | SF6 circuit breaker arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105977096A true CN105977096A (en) | 2016-09-28 |
Family
ID=57019653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610486095.1A Pending CN105977096A (en) | 2016-06-24 | 2016-06-24 | SF6 circuit breaker arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977096A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411288A (en) * | 2018-11-20 | 2019-03-01 | 许继（厦门）智能电力设备股份有限公司 | A kind of supplementary structure improving high-voltage circuitbreaker fracture insulation performance |
| 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 |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
| CN111668061A (en) * | 2019-03-05 | 2020-09-15 | 国家电网有限公司 | Explosion chamber disk seat and explosion chamber |
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| 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 |
| US20110056915A1 (en) * | 2009-09-10 | 2011-03-10 | Ls Industrial Systems Co., Ltd. | Valve for gas circuit breaker and gas circuit breaker with the same |
| CN202695268U (en) * | 2012-05-28 | 2013-01-23 | 北京北开电气股份有限公司 | Novel pressure release valve plate stabilizing device for tank circuit breaker |
| CN205752010U (en) * | 2016-06-24 | 2016-11-30 | 广州白云电器设备股份有限公司 | A kind of SF6arc-extinguishing chamber of circuit breaker |
-
2016
- 2016-06-24 CN CN201610486095.1A patent/CN105977096A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110056915A1 (en) * | 2009-09-10 | 2011-03-10 | Ls Industrial Systems Co., Ltd. | Valve for gas circuit breaker and gas circuit breaker with the same |
| 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 |
| CN202695268U (en) * | 2012-05-28 | 2013-01-23 | 北京北开电气股份有限公司 | Novel pressure release valve plate stabilizing device for tank circuit breaker |
| CN205752010U (en) * | 2016-06-24 | 2016-11-30 | 广州白云电器设备股份有限公司 | A kind of SF6arc-extinguishing chamber of circuit breaker |
Cited By (6)
| 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 |
| CN109767950B (en) * | 2017-11-09 | 2020-11-06 | 河南平芝高压开关有限公司 | Self-energy arc extinguish chamber and circuit breaker using same |
| CN109411288A (en) * | 2018-11-20 | 2019-03-01 | 许继（厦门）智能电力设备股份有限公司 | A kind of supplementary structure improving high-voltage circuitbreaker fracture insulation performance |
| CN109411288B (en) * | 2018-11-20 | 2024-04-05 | 许继（厦门）智能电力设备股份有限公司 | Auxiliary structure for improving fracture insulation performance of high-voltage circuit breaker |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
| CN111668061A (en) * | 2019-03-05 | 2020-09-15 | 国家电网有限公司 | Explosion chamber disk seat and explosion chamber |
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Application publication date: 20160928 |
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