CN105742136A - Miniature arc extinguishing structure of circuit breaker - Google Patents
Miniature arc extinguishing structure of circuit breaker Download PDFInfo
- Publication number
- CN105742136A CN105742136A CN201610282078.6A CN201610282078A CN105742136A CN 105742136 A CN105742136 A CN 105742136A CN 201610282078 A CN201610282078 A CN 201610282078A CN 105742136 A CN105742136 A CN 105742136A
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- circuit breaker
- miniature circuit
- separating wall
- 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
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to the technical field of a circuit breaker, and discloses a miniature arc extinguishing structure of the circuit breaker. The arc extinguishing structure comprises an arc extinguishing passage (11), wherein the arc extinguishing passage (11) is used for connecting an exhaust end (1) and an arc striking end (2) below a movable contact and a static contact, two magnetic conduction plates (5) and an arc extinguishing cover (6) are arranged on the side wall of the arc extinguishing passage (110), the two magnetic conduction plates (5) are oppositely arranged, the arc extinguishing cover (6) is arranged between the two magnetic conduction plates (5), arc isolation walls (7) are arranged between the magnetic conduction plates (5) and the arc extinguishing cover (6), and an arc runner is formed between the arc extinguishing cover (6) and the arc isolation walls (7) and extends to the exhaust end (1). With the arc extinguishing structure disclosed by the invention, an arc can be effectively and rapidly introduced to an arc extinguishing system when large current happens, a grid sheet combination cannot be burned and scatted, and several grid sheets are melted together to loss an arc extinguishing function.
Description
Technical field
The present invention relates to breaker technical field, more particularly, it relates to the arc extinguishing structure of a kind of miniature circuit breaker.
Background technology
Chopper is a kind of device for switching extremely common in circuit, is widely used in outlets at different levels and the terminal system of the field distribution systems such as industrial circle, building field, water conservancy and hydropower.Chopper is generally made up of contact system, arc quenching system, operating mechanism, electrical apparatus release, shell etc..The effect of chopper is turned off and connects load circuit, and disengagement failure circuit, it is prevented that fault spread, it is ensured that safe operation.The dynamic/static contact of chopper is at bringing onto load or breaks down big electric current and in the course of action of disjunction, the voltage between dynamic/static contact will cause air dielectric to discharge, and forms electric arc.In order to ensure the reliability service of chopper, in chopper, generally it is provided with arc quenching system to extinguish electric arc.
At present, such as Chinese patent literature CN205081028U in prior art, disclose a kind of universal circuit breaker arc control devices, combine including arc extinguishing passage and the grid being located in described arc extinguishing passage；Described arc extinguishing passage is made up of base plate and two arc separating walls being fixed on described base plate, and the combination of described grid includes the spaced arc extinguishing grid pieces of multi-disc, and described base plate is provided with steam vent；Described arc extinguishing channel interior is provided with the arc initiation device being beneficial in electric arc entrance described grid combination near the position of dynamic and static contact, described arc initiation device includes two relatively spaced aerogenesis plates and is located at each aerogenesis plate magnetic conductive board near described arc separating wall side, forms electric arc runway between two described aerogenesis plates.
The universal circuit breaker arc control devices of above-mentioned patent documentation, although it is rational in infrastructure, but still suffer from following defect: arc separating wall and magnetic conductive board are positioned close to the position of dynamic and static contact, fast and effectively electric arc can not be introduced arc quenching system when running into big electric current, under the active force of powerful electric arc grid combination can be dissipated by burning and several molten lose arc-suppression function together.
Summary of the invention
Therefore, what the technical problem to be solved in the present invention was in that to overcome existing product can not introduce arc quenching system by electric arc fast and effectively when running into big electric current, grid combination can be burnt to be dissipated and several molten problems together losing arc-suppression function, thering is provided one that electric arc can introduce fast and effectively arc quenching system when running into big electric current, grid combination will not be burnt be dissipated and several arc extinguishing structures melting a kind of miniature circuit breakers together losing arc-suppression function.
For solving the problems referred to above, a kind of arc extinguishing structure of the miniature circuit breaker of the present invention, including: connect the arc extinguishing passage of arc end below exhaust end and dynamic and static contact, described arc extinguishing channel side wall is provided with two magnetic conductive boards being oppositely arranged, and be arranged on described in two the arc-extinguish chamber between magnetic conductive board；It is provided with arc separating wall between described magnetic conductive board and described arc-extinguish chamber, between described arc-extinguish chamber and described arc separating wall, is formed with the electric arc runway extending to described exhaust end from described arc end.
Wherein, described magnetic conductive board extends to described arc end from described exhaust end.
Wherein, described arc striking piece is formed with the kink near described moving contact.
Wherein, described arc-extinguish chamber includes: some be arranged in parallel and be adjacent between there is the arc extinguishing grid pieces in gap, described gap constitutes a part for described electric arc runway.
Wherein, described arc extinguishing grid pieces is provided with the opening V-groove towards described arc end.
Wherein, described arc separating wall arranges some locating slots for fixing described arc extinguishing grid pieces.
Wherein, described arc separating wall forms the groove of magnetic conductive board described in inlay card.
Wherein, described arc separating wall is high temperature gas exhausted material.
Technical solution of the present invention, has the advantage that
1. in the present invention, by being formed with the electric arc runway extending to described exhaust end from described arc end between described arc-extinguish chamber and described arc separating wall, and it is arranged on the design of the described magnetic conductive board of the outside of described arc separating wall, fast and effectively electric arc can be introduced arc quenching system when running into big electric current, grid combination will not cause because of electric arc introduces arc quenching system slow high temperature grid is combined burning dissipate and several molten lose arc-suppression function together, ensure the arc-suppression function of arc extinguishing structure, it is ensured that the reliability service of chopper.
2. in the present invention, what the kink of described arc striking piece was of value to introduces in arc quenching system by electric arc, strengthens arc quenching effect.
3. in the present invention, the gap having between described arc extinguishing grid pieces constitutes a part for described electric arc runway, when electric arc enters described gap, is split by described arc extinguishing grid pieces, and elongating arc also cools down electric arc, reaches arc quenching effect.
4. in the present invention, described arc extinguishing grid pieces is fixed on described arc separating wall by described locating slot, it is possible to strengthen the fixed effect of described arc extinguishing grid pieces, it is ensured that the structural stability of described arc extinguishing structure.
5. in the present invention, described magnetic conductive board card is embedded on the groove of described arc separating wall, and this structure is fixing simple, and conveniently installs and dismounting.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiments of the invention and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein:
The structure that Fig. 1 is the preferred embodiment of the present invention launches schematic diagram；
Fig. 2 is the structural representation of arc extinguishing passage in Fig. 1；
Fig. 3 is the structural representation of arc separating wall in Fig. 1；
Fig. 4 is the structural representation of arc-extinguish chamber in Fig. 1；
Description of reference numerals:
1-exhaust end；2-arc end；3-moving contact；4-static contact；5-magnetic conductive board；6-arc-extinguish chamber；61-arc extinguishing grid pieces；611-V type groove；62-fixes plate；7-arc separating wall；71-locating slot；72-groove；9-arc striking piece；91-kink；10-yoke；11-arc extinguishing passage.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As the preferred embodiments of the present invention, the arc extinguishing structure of the present embodiment, including: static contact 4, moving contact 3, yoke 10, arc striking piece 9, magnetic conductive board 5, arc-extinguish chamber 6 and arc separating wall 7；
Be made up of four sides of arc extinguishing passage 11 yoke 10, arc striking piece 9 and two magnetic conductive boards 5 being oppositely arranged, arc extinguishing passage 11 another two side is respectively near moving contact 3, the arc end 2 of static contact 4 and the exhaust end 1 relative with arc end 2.When running into big electric current, producing, enter arc extinguishing passage 11 at arc end 2, carry out arc extinguishing in arc extinguishing passage 11 when electric arc is by static contact 4 and moving contact 3 disjunction, the gas produced during arc extinguishing is discharged by exhaust end 1.Arc striking piece 9 is formed with near moving contact 3 kink 91.
Arc-extinguish chamber 6 is arranged between two magnetic conductive boards 5, and arc-extinguish chamber 6 includes: arc extinguishing grid pieces 61 and fixing plate 62；Arc extinguishing grid pieces 61 for some be arranged in parallel and be adjacent between there is gap, arc extinguishing grid pieces 61 is prolate cube structure, the minor face side of arc extinguishing grid pieces 61 is towards arc end 2, and is provided with the opening V-groove 611 towards arc end 2, and long limit participates in arc extinguishing can increase arc quenching effect；Fixing plate 62 is used for fixing arc extinguishing grid pieces 61, and when arc extinguishing grid pieces 61 fixed by fixing plate 62, the side that arc extinguishing grid pieces 61 is fixed is higher than the upper surface of fixing plate 62.The two ends in gap are respectively facing arc end 2 and exhaust end 1, a part for gap arcing runway；When electric arc enters gap, being split by arc extinguishing grid pieces 61, elongating arc also cools down electric arc, strengthens arc quenching effect.
Arc separating wall 7 is located between magnetic conductive board 5 and arc-extinguish chamber 6, is formed with the electric arc runway extending to exhaust end 1 from arc end 2 between arc separating wall 7 and arc-extinguish chamber 6, and the two ends of arc separating wall 7 are respectively close to exhaust end 1 and arc end 2, and electric arc moves in electric arc runway.A side on arc separating wall 7 forms some locating slots 71 for fixing arc extinguishing grid pieces 61, relative opposite side forms the groove 72 for inlay card magnetic conductive board 5.Locating slot 71 be arranged in parallel, and the spacing of locating slot 71 is corresponding with the gap of arc extinguishing grid pieces 61.Arc separating wall 7 is high temperature gas exhausted material.
The operation principle of the arc extinguishing structure of the miniature circuit breaker of the present invention is as follows:
When chopper runs into big electric current, moving contact 3 and static contact 4 disconnect and form electric arc, and electric arc is subject to the effect of Ampere force in two magnetic conductive boards 5, moves towards arc end 2 and enters arc extinguishing passage 11, and electric arc is elongated in electric arc runway, cools down, until finally extinguishing.
Obviously, above-described embodiment is only for clearly demonstrating example, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (8)
1. the arc extinguishing structure of a miniature circuit breaker, including: connect the arc extinguishing passage (11) of arc end (2) below exhaust end (1) and dynamic and static contact, described arc extinguishing passage (11) sidewall is provided with two magnetic conductive boards being oppositely arranged (5), and is arranged on the arc-extinguish chamber (6) between magnetic conductive board described in two (5)；It is characterized in that, it is provided with arc separating wall (7) between described magnetic conductive board (5) and described arc-extinguish chamber (6), between described arc-extinguish chamber (6) and described arc separating wall (7), is formed with the electric arc runway extending to described exhaust end (1) from described arc end (2).
2. the arc extinguishing structure of miniature circuit breaker according to claim 1, it is characterised in that described magnetic conductive board (5) extends to described arc end (2) from described exhaust end (1).
3. the arc extinguishing structure of miniature circuit breaker according to claim 2, it is characterised in that also include arc striking piece (9), described arc striking piece (9) is formed with the kink (91) near described moving contact (3).
4. the arc extinguishing structure of miniature circuit breaker according to claim 1, it is characterized in that, described arc-extinguish chamber (6) including: some be arranged in parallel and be adjacent between there is the arc extinguishing grid pieces (61) in gap, described gap constitutes a part for described electric arc runway.
5. the arc extinguishing structure of miniature circuit breaker according to claim 4, it is characterised in that described arc extinguishing grid pieces (61) is provided with the opening V-groove (611) towards described arc end (2).
6. the arc extinguishing structure of miniature circuit breaker according to claim 4, it is characterised in that some locating slots 71 for fixing described arc extinguishing grid pieces (61) are set on described arc separating wall (7).
7. the arc extinguishing structure of miniature circuit breaker according to claim 1, it is characterised in that form the groove (72) of magnetic conductive board (5) described in inlay card on described arc separating wall (7).
8. the arc extinguishing structure of miniature circuit breaker according to claim 1, it is characterised in that described arc separating wall (7) is high temperature gas exhausted material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282078.6A CN105742136A (en) | 2016-04-29 | 2016-04-29 | Miniature arc extinguishing structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282078.6A CN105742136A (en) | 2016-04-29 | 2016-04-29 | Miniature arc extinguishing structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742136A true CN105742136A (en) | 2016-07-06 |
Family
ID=56288519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610282078.6A Pending CN105742136A (en) | 2016-04-29 | 2016-04-29 | Miniature arc extinguishing structure of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105742136A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203260541U (en) * | 2013-05-27 | 2013-10-30 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker arc distinguishing chamber device |
| CN203839321U (en) * | 2014-05-21 | 2014-09-17 | 华通机电股份有限公司 | Universal breaker arc-extinguishing chamber |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN104157524A (en) * | 2013-05-14 | 2014-11-19 | Ls产电株式会社 | Arc extinguishing unit for molded case circuit breaker |
| CN104485267A (en) * | 2014-12-19 | 2015-04-01 | 常熟开关制造有限公司(原常熟开关厂） | Contact arc extinguishing device for low voltage circuit breaker |
| CN104603897A (en) * | 2012-09-05 | 2015-05-06 | 伊顿公司 | Single direct current arc chute, and bi-directional direct current electrical switching apparatus employing the same |
| CN205645728U (en) * | 2016-04-29 | 2016-10-12 | 浙江人民电器有限公司 | Miniature circuit breaker's arc extinguishing structure |
-
2016
- 2016-04-29 CN CN201610282078.6A patent/CN105742136A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104603897A (en) * | 2012-09-05 | 2015-05-06 | 伊顿公司 | Single direct current arc chute, and bi-directional direct current electrical switching apparatus employing the same |
| CN104157524A (en) * | 2013-05-14 | 2014-11-19 | Ls产电株式会社 | Arc extinguishing unit for molded case circuit breaker |
| CN203260541U (en) * | 2013-05-27 | 2013-10-30 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker arc distinguishing chamber device |
| CN203839321U (en) * | 2014-05-21 | 2014-09-17 | 华通机电股份有限公司 | Universal breaker arc-extinguishing chamber |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN104485267A (en) * | 2014-12-19 | 2015-04-01 | 常熟开关制造有限公司(原常熟开关厂） | Contact arc extinguishing device for low voltage circuit breaker |
| CN205645728U (en) * | 2016-04-29 | 2016-10-12 | 浙江人民电器有限公司 | Miniature circuit breaker's arc extinguishing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6496326B2 (en) | Circuit breaker advantageous for rapid movement and extension of arc | |
| US10418217B2 (en) | Arc extinguishing structure for direct current circuit breaker | |
| US10056208B2 (en) | Quick arc-breaking circuit-breaker | |
| CN206401213U (en) | Contact of breaker arc initiation device | |
| CN104350563A (en) | A switching device | |
| CN202977343U (en) | Mixed grating-sheet explosion chamber of breaker and low-voltage breaker | |
| CN205645728U (en) | Miniature circuit breaker's arc extinguishing structure | |
| CN203260541U (en) | Circuit breaker arc distinguishing chamber device | |
| US2249499A (en) | Electric circuit interrupter | |
| CN206363976U (en) | The arc-control device of breaker | |
| CN103426670B (en) | Breaker contact arc extinguishing system | |
| CN111900029A (en) | DC isolating switch arc extinguish chamber structure for enhancing energy dissipation | |
| CN105742136A (en) | Miniature arc extinguishing structure of circuit breaker | |
| CN205081083U (en) | Universal type circuit breaker | |
| CN204204777U (en) | A kind of circuit breaker with Novel arc extinguishing room | |
| US2446027A (en) | Arc chute | |
| KR20150089729A (en) | Arc Extinguishing Device of Molded Case Circuit Breaker | |
| WO2013162149A1 (en) | Structure for preventing eccentricity of movable contact in vacuum circuit breaker | |
| CN112216575A (en) | Nonpolarity comprehensive regulation and control arc extinguish chamber for direct current molded case circuit breaker | |
| CN220829908U (en) | High-performance electric appliance switch arc extinguishing chamber | |
| CN215183823U (en) | Novel intelligent miniature circuit breaker | |
| CN107546081B (en) | Arc extinguishing space sealing structure of circuit breaker | |
| CN110098095B (en) | Air-blowing type low-voltage arc extinguishing device and circuit breaker | |
| CN218004673U (en) | Arc extinguish chamber of switch | |
| CN104134593B (en) | A kind of arc-control device of miniature circuit breaker and arc-suppressing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160706 |