CN102376474A - High-breaking-capacity arc extinguish chamber of circuit breaker - Google Patents
High-breaking-capacity arc extinguish chamber of circuit breaker Download PDFInfo
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- CN102376474A CN102376474A CN2010102602623A CN201010260262A CN102376474A CN 102376474 A CN102376474 A CN 102376474A CN 2010102602623 A CN2010102602623 A CN 2010102602623A CN 201010260262 A CN201010260262 A CN 201010260262A CN 102376474 A CN102376474 A CN 102376474A
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- extinguishing grid
- grid pieces
- arc extinguishing
- housing
- arc
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Abstract
The invention discloses a high-breaking-capacity arc extinguish chamber of a circuit breaker. The high-breaking-capacity arc extinguish chamber comprises a first shell, a second shell, an arc starting piece, a first arc extinguish gate sheet, a second arc extinguish gate sheet, a third arc extinguish gate sheet, wherein the first shell and the second shell have structures as mirror images of each other, and an inner cavity of the first shell is provided with a plurality of slots; the lengths of the first arc extinguish gate sheet, the second arc extinguish gate sheet and the third arc extinguish gate sheet gradually increase; the first arc extinguish gate sheet, the second arc extinguish gate sheet and the third arc extinguish gate sheet are inserted into the slots of the first shell, and the arc extinguish gate sheets are gradually increased from top to bottom and then are gradually reduced; and the arc starting piece is arranged in a slot on the top part of the first shell. The high-breaking-capacity arc extinguish chamber of the circuit breaker can realize quick dredging of a gas field and quick extinguish of electric arcs.
Description
Technical field
The present invention relates to the arc quenching system of circuit breaker.More particularly, the arc control device that relate to arc extinguishing system of circuit breaker.
Background technology
The structure of the arc quenching system of circuit breaker product is directly connected to the arc extinction performance of circuit breaker product; Have influence on charged life-span, breaking capacity and other electrical characteristics of product; Current arc-extinguishing chamber of circuit breaker mainly contains semi-enclosed and totally enclosed type, the semi-enclosed circuit breaker that generally is used for traditional single-break structure, and totally enclosed type generally is used for the circuit breaker of high-end double break point; Semienclosed arc quenching chamber structure is when big electric current disjunction; The high temperature expanding gas is diffusion everywhere easily, causes following 3 influences: be unfavorable for that 1) gas toward being scheduled to the gas outlet arc blow-out, causes striking fast; 2) gases at high pressure cause two side bodies to break easily, damage circuit breaker; 3) cause metallic to flash easily, damage hardware or cause the action clamping stagnation.The present invention aims to provide a kind of brand-new semiclosed arc quenching chamber structure, realizes dredging fast of gas field and extinguishing fast of electric arc.
Summary of the invention
The present invention aims to provide a kind of brand-new semiclosed arc quenching chamber structure.
According to one embodiment of the invention, a kind of circuit breaker high breaking arc control device are proposed, comprising: first housing, second housing, striking sheet, first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces; First housing and second housing have the structure of mirror image each other, have several slots on the inner chamber of first housing; The length of first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces increases progressively gradually; First arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of first housing, and arc extinguishing grid pieces progressively increases earlier from top to bottom, progressively reduces again; The striking sheet is installed in the slot at top of first housing.
In one embodiment, the inner chamber of first housing has multistage step, and multistage step surface is to the gas outlet direction.The inner chamber degree of depth of first housing increases by rank to the gas outlet direction from contact apertures.The wall thickness of first housing is even.
In one embodiment, the striking sheet has a sagging striking pin.The striking sheet passes 3～5 arc extinguishing grid pieces and keeps a striking distance with the large opening of moving contact from the top.
In one embodiment, there are chamfering or space in first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces both sides.First arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of first housing, the length arrangement of arc extinguishing grid pieces one-tenth weak point-in-long-in-short form.The layout of first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces makes to be opened apart from upwards also having 3～5 arc extinguishing grid pieces from the moving contact maximum
In one embodiment, first housing and second housing adopt rivet, screw fastening housing.
Circuit breaker high breaking arc control device of the present invention can be realized dredging fast of gas field and extinguishing fast of electric arc.
Description of drawings
Above-mentioned and other characteristic, character and advantage of the present invention will become more obvious through the description below in conjunction with accompanying drawing and embodiment, in the accompanying drawings, identical Reference numeral is represented identical characteristic all the time, wherein:
Fig. 1 a, 1b, 1c show the assembling sketch map according to the circuit breaker high breaking arc control device of one embodiment of the invention;
Fig. 2 a, 2b, 2c show the sketch map according to first housing of the circuit breaker high breaking arc control device of one embodiment of the invention;
Fig. 3 a, 3b, 3c show the sketch map according to second housing of the circuit breaker high breaking arc control device of one embodiment of the invention;
Fig. 4 a, 4b show the sketch map according to the striking sheet of the circuit breaker high breaking arc control device of one embodiment of the invention;
Fig. 5 a, 5b, 5c show the sketch map according to the arc extinguishing grid pieces of the circuit breaker high breaking arc control device of one embodiment of the invention;
Fig. 6 a, 6b, 6c, 6d show the sketch map according to the circuit breaker high breaking arc control device of one embodiment of the invention airflow field when the big electric current disjunction.
Embodiment
Shown in Figure 5 with reference to figure 1-, disclosed circuit breaker high breaking arc control device according to one embodiment of the invention.
Shown in figure 1a, 1b, 1c, these circuit breaker high breaking arc control device comprise: first housing 100, second housing 200, striking sheet 300, arc extinguishing grid pieces 400.Arc extinguishing grid pieces 400 comprises first arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403.First housing 100 and second housing 200 have the structure of mirror image each other, have several slots 104 on the inner chamber of first housing 100.The length of first arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403 increases progressively gradually.First arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 404 insert in the slot 104 of first housing, and arc extinguishing grid pieces appears from top to bottom and progressively increases the configuration that progressively reduces again earlier.Striking sheet 300 is installed in the slot at top of first housing 100.
Shown in figure 2a, 2b, 2c, the inner chamber of first housing 100 has multistage step 102, and this multistage step 102 is direction towards the gas outlet.The degree of depth of the inner chamber of first housing 100 increases (with reference to figure 2c) to the gas outlet direction by rank from contact apertures.Have several slots 104 on the inner chamber of first housing 100.The wall thickness of first housing 100 is even, and shock resistance is good.Shown in figure 3a, 3b, 3c, second housing 200 and first housing 100 be mirror-image structure each other, has these above-mentioned structures equally.
Shown in figure 4a, 4b, striking sheet 300 has a sagging striking pin 301, and this striking pin 301 has long length.
Shown in figure 5a, 5b, 5c, the length of first arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403 increases progressively gradually.There are chamfering or space 404 in the both sides of first arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403, in one embodiment, bigger chamfering or space can be arranged.
First arc extinguishing grid pieces 401, second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403 are inserted in the slot 104 of first housing 100 according to a graded, form earlier from bottom to top progressively to increase, the configuration that progressively reduces again, for example form short-in-long-in-short arrangement.Under cavity body structure permission situation, select long arc extinguishing grid pieces as far as possible for use, striking sheet 300 is installed in the slot at top.Arc extinguishing grid pieces is opened apart from the distance that upwards also has 3～5 from the moving contact maximum, has increased the quantity of arc extinguishing grid pieces than traditional structure.Striking sheet 300 passes 3～5 arc extinguishing grid pieces and keeps a striking distance with the large opening of moving contact from the top, this distance is below the 4mm.
Second housing 200 closes from the opposite side of first housing 100, and the seam of first housing 100 and second housing 200 does not closely have the gap, adopts rivet, screw or additive method that first housing 100 and second housing 200 is fastening.
Fig. 6 a, 6b, 6c, 6d show the sketch map according to the circuit breaker high breaking arc control device of one embodiment of the invention airflow field when the big electric current disjunction.When big electric current disjunction, electric arc makes the air rapid expansion, because the inner chamber of housing is to be broadened by narrow from moving contact to the gas outlet direction, causes air pressure low inside and high outside, has guaranteed that gas moves to the gas outlet fast; Because a plurality of step surfaces of housing inner chamber are to the gas outlet direction,, guarantee that gas moves to the gas outlet fast under the stopping of step surface in case gas backstreaming can be reversed to swash and penetrate; All there are big chamfering or gap in the arc extinguishing grid pieces both sides, and it is smooth and easy to have guaranteed to give vent to anger; The design that arc extinguishing grid pieces extends has as far as possible guaranteed the blow-out distance after electric arc gets into arc extinguishing grid pieces, prevents that electric arc from going out arc control device and cause secondary to restrike; The housing wall thickness is even and impact strength good, prevents that effectively case for circuit breaker is broken by the impact.
Circuit breaker high breaking arc control device of the present invention can be realized dredging fast of gas field and extinguishing fast of electric arc.
The foregoing description provides to being familiar with personnel in this area and realizes or use of the present invention; Being familiar with those skilled in the art can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (10)
1. circuit breaker high breaking arc control device is characterized in that, comprising: first housing, second housing, striking sheet, first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces;
First housing and second housing have the structure of mirror image each other, have several slots on the inner chamber of first housing;
The length of first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces increases progressively gradually;
First arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of first housing, and arc extinguishing grid pieces progressively increases earlier from top to bottom, progressively reduces again;
The striking sheet is installed in the slot at top of first housing.
2. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
The inner chamber of said first housing has multistage step, and said multistage step surface is to the gas outlet direction.
3. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
The inner chamber degree of depth of said first housing increases by rank to the gas outlet direction from contact apertures.
4. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
The wall thickness of said first housing is even.
5. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
The striking sheet has a sagging striking pin.
6. circuit breaker high breaking arc control device as claimed in claim 5 is characterized in that,
The striking sheet passes 3～5 arc extinguishing grid pieces and keeps a striking distance with the large opening of moving contact from the top.
7. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
There are chamfering or space in said first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces both sides.
8. circuit breaker high breaking arc control device as claimed in claim 7 is characterized in that,
First arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of first housing, the length arrangement of arc extinguishing grid pieces one-tenth weak point-in-long-in-short form.
9. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
The layout of first arc extinguishing grid pieces, second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces makes to be opened apart from upwards also having 3～5 arc extinguishing grid pieces from the moving contact maximum.
10. circuit breaker high breaking arc control device as claimed in claim 1 is characterized in that,
First housing and second housing adopt rivet, screw fastening housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260262.3A CN102376474B (en) | 2010-08-23 | 2010-08-23 | High-breaking-capacity arc extinguish chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260262.3A CN102376474B (en) | 2010-08-23 | 2010-08-23 | High-breaking-capacity arc extinguish chamber of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376474A true CN102376474A (en) | 2012-03-14 |
| CN102376474B CN102376474B (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010260262.3A Active CN102376474B (en) | 2010-08-23 | 2010-08-23 | High-breaking-capacity arc extinguish chamber of circuit breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161385A (en) * | 2015-09-21 | 2015-12-16 | 国网辽宁省电力有限公司鞍山供电公司 | Drop switch insulation arc suppression cover |
| CN108447714A (en) * | 2018-04-04 | 2018-08-24 | 上海电科电器科技有限公司 | Arc-chutes |
| CN109065401A (en) * | 2018-09-30 | 2018-12-21 | 无锡新宏泰电器科技股份有限公司 | A kind of arc-chutes and breaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5251574A (en) * | 1975-10-22 | 1977-04-25 | Tokyo Shibaura Electric Co | Atmospheric breaker deenergizing chamber |
| JPS52103368U (en) * | 1976-02-04 | 1977-08-05 | ||
| CN1080780A (en) * | 1992-07-02 | 1994-01-12 | 三菱电机株式会社 | Switch |
| CN1485867A (en) * | 2002-09-28 | 2004-03-31 | 上海电器科学研究所 | Device for eliminating free gas and arc extinguishing chamber equipped with this device |
| CN1610039A (en) * | 2004-11-13 | 2005-04-27 | 常熟开关制造有限公司(原常熟开关厂） | Arc-control device for circuit breaker |
| CN101540248A (en) * | 2009-03-30 | 2009-09-23 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage breaker |
-
2010
- 2010-08-23 CN CN201010260262.3A patent/CN102376474B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5251574A (en) * | 1975-10-22 | 1977-04-25 | Tokyo Shibaura Electric Co | Atmospheric breaker deenergizing chamber |
| JPS52103368U (en) * | 1976-02-04 | 1977-08-05 | ||
| CN1080780A (en) * | 1992-07-02 | 1994-01-12 | 三菱电机株式会社 | Switch |
| CN1485867A (en) * | 2002-09-28 | 2004-03-31 | 上海电器科学研究所 | Device for eliminating free gas and arc extinguishing chamber equipped with this device |
| CN1610039A (en) * | 2004-11-13 | 2005-04-27 | 常熟开关制造有限公司(原常熟开关厂） | Arc-control device for circuit breaker |
| CN101540248A (en) * | 2009-03-30 | 2009-09-23 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161385A (en) * | 2015-09-21 | 2015-12-16 | 国网辽宁省电力有限公司鞍山供电公司 | Drop switch insulation arc suppression cover |
| CN108447714A (en) * | 2018-04-04 | 2018-08-24 | 上海电科电器科技有限公司 | Arc-chutes |
| CN109065401A (en) * | 2018-09-30 | 2018-12-21 | 无锡新宏泰电器科技股份有限公司 | A kind of arc-chutes and breaker |
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| Publication number | Publication date |
|---|---|
| CN102376474B (en) | 2014-05-28 |
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