CN102376474B - 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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- CN102376474B CN102376474B CN201010260262.3A CN201010260262A CN102376474B CN 102376474 B CN102376474 B CN 102376474B CN 201010260262 A CN201010260262 A CN 201010260262A CN 102376474 B CN102376474 B CN 102376474B
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- extinguishing grid
- grid pieces
- arc extinguishing
- housing
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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, relate to the arc control device of arc extinguishing system of circuit breaker.
Background technology
The structure of the arc quenching system of circuit breaker is directly connected to the arc extinction performance of circuit breaker, have influence on the band electric life of product, breaking capacity and other electrical characteristics, current arc-extinguishing chamber of circuit breaker mainly contains semi-enclosed and totally enclosed type, in the semi-enclosed circuit breaker that is generally used for traditional single-break structure, totally enclosed type is generally used in the circuit breaker of high-end double breaking points, semienclosed arc quenching chamber structure is in the time of large electric current disjunction, high-temperature expansion gas is diffusion everywhere easily, cause following 3 impacts: 1) be unfavorable for that gas is toward predetermined gas outlet arc blow-out, cause striking fast, 2) gases at high pressure easily cause two side bodies to break, and damage circuit breaker, 3) easily cause metallic to flash, damage hardware or cause 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 high-breaking-capacity arc extinguish chamber of circuit breaker is proposed, comprising: the first housing, the second housing, arc striking piece, the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces; The first housing and the second housing have the structure of mirror image each other, have several slots on the inner chamber of the first housing; The length of the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces increases progressively gradually; The first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of the first housing, and arc extinguishing grid pieces first progressively increases from top to bottom, more progressively reduces; Arc striking piece is arranged in the slot at top of the first housing.
In one embodiment, the inner chamber of the first housing has multi-stage stairs, and multi-stage stairs is towards gas outlet direction.The depth of inner cavity of the first housing increases by rank to gas outlet direction from contact apertures.The wall thickness of the first housing is even.
In one embodiment, arc striking piece has a sagging striking pin.Arc striking piece keeps a striking distance from top through 3～5 arc extinguishing grid pieces and with the large opening of moving contact.
In one embodiment, there are chamfering or space in the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces both sides.The first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of the first housing, and that the length arrangement of arc extinguishing grid pieces becomes is short-in-long-in-short form.The layout of the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces makes to open apart from upwards also having 3～5 arc extinguishing grid pieces from moving contact maximum
In one embodiment, housing is adopted rivet, screw fastening by the first housing and the second housing.
High-breaking-capacity arc extinguish chamber of circuit breaker of the present invention can be realized dredging fast of gas field and extinguishing fast of electric arc.
Accompanying drawing explanation
The above and other features of the present invention, character and advantage are by by becoming more obvious below in conjunction with the description of drawings and Examples, and in the accompanying drawings, identical Reference numeral represents identical feature all the time, wherein:
Fig. 1 a, 1b, 1c show the assembling schematic diagram according to the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention;
Fig. 2 a, 2b, 2c show according to the schematic diagram of the first housing of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention;
Fig. 3 a, 3b, 3c show according to the schematic diagram of the second housing of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention;
Fig. 4 a, 4b show according to the schematic diagram of the arc striking piece of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention;
Fig. 5 a, 5b, 5c show according to the schematic diagram of the arc extinguishing grid pieces of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention;
Fig. 6 a, 6b, 6c, 6d show according to the schematic diagram of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention airflow field when the large electric current disjunction.
Embodiment
Shown in figure 1-Fig. 5, disclose the high-breaking-capacity arc extinguish chamber of circuit breaker according to one embodiment of the invention.
Shown in figure 1a, 1b, 1c, this high-breaking-capacity arc extinguish chamber of circuit breaker comprises: the first housing 100, the second housing 200, arc striking piece 300, arc extinguishing grid pieces 400.Arc extinguishing grid pieces 400 comprises the first arc extinguishing grid pieces 401, the second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403.The first housing 100 and the second housing 200 have the structure of mirror image each other, have several slots 104 on the inner chamber of the first housing 100.The length of the first arc extinguishing grid pieces 401, the second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403 increases progressively gradually.The first arc extinguishing grid pieces 401, the second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 404 insert in the slot 104 of the first housing, and arc extinguishing grid pieces presents from top to bottom first progressively increase, then the configuration progressively reducing.Arc striking piece 300 is arranged in the slot at top of the first housing 100.
Shown in figure 2a, 2b, 2c, the inner chamber of the first housing 100 has multi-stage stairs 102, and this multi-stage stairs 102 is towards gas outlet direction.The degree of depth of the inner chamber of the first housing 100 increases (with reference to figure 2c) from contact apertures to gas outlet direction by rank.On the inner chamber of the first housing 100, there are several slots 104.The wall thickness of the first housing 100 is even, and shock resistance is good.Shown in figure 3a, 3b, 3c, the second housing 200 and the first housing 100 mirror-image structure each other, have these above-mentioned structures equally.
Shown in figure 4a, 4b, arc striking piece 300 has a sagging striking pin 301, and this striking pin 301 has longer length.
Shown in figure 5a, 5b, 5c, the length of the first arc extinguishing grid pieces 401, the 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 the first arc extinguishing grid pieces 401, the second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403, in one embodiment, can have larger chamfering or space.
The first arc extinguishing grid pieces 401, the second arc extinguishing grid pieces 402, the 3rd arc extinguishing grid pieces 403 are inserted in the slot 104 of the first housing 100 according to a graded, form first and progressively increase from bottom to top, then the configuration progressively reducing, for example form short-in-long-in-short arrangement.In cavity body structure permission situation, select as far as possible long arc extinguishing grid pieces, arc striking piece 300 is arranged in the slot at top.Arc extinguishing grid pieces is opened apart from the distance that upwards also has 3～5 from moving contact maximum, has increased the quantity of arc extinguishing grid pieces compared with traditional structure.Arc striking piece 300 keeps a striking distance from top through 3～5 arc extinguishing grid pieces and with the large opening of moving contact, and this distance is below 4mm.
The second housing 200 closes from the opposite side of the first housing 100, and the tight gapless of seam of the first housing 100 and the second housing 200 adopts rivet, screw or additive method by fastening to the first housing 100 and the second housing 200.
Fig. 6 a, 6b, 6c, 6d show according to the schematic diagram of the high-breaking-capacity arc extinguish chamber of circuit breaker of one embodiment of the invention airflow field when the large electric current disjunction.In the time of large electric current disjunction, electric arc makes air rapid expansion, because the inner chamber of housing is to be broadened by narrow from moving contact to gas outlet direction, causes air pressure low inside and high outside, has guaranteed that gas moves to gas outlet fast; Because multiple step surfaces of housing inner chamber are to gas outlet direction, once gas backstreaming can be reversed to swash and penetrate under the stopping of step surface, guarantee that gas moves to gas outlet fast; There are larger chamfering or gap in arc extinguishing grid pieces both sides, have guaranteed to give vent to anger smooth and easy; The design that arc extinguishing grid pieces lengthens has as far as possible guaranteed that electric arc enters the blow-out distance after arc extinguishing grid pieces, prevents that electric arc from going out arc control device and causing secondary to restrike; Housing wall thickness is even and impact strength good, effectively prevents that case for circuit breaker is broken by the impact.
High-breaking-capacity arc extinguish chamber of circuit breaker of the present invention can be realized dredging fast of gas field and extinguishing fast of electric arc.
Above-described embodiment is available to be familiar with person in the art and to realize or use of the present invention; those skilled in the art can be without departing from the present invention in the case of the inventive idea; above-described embodiment is made to various modifications or variation; thereby protection scope of the present invention do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (9)
1. a high-breaking-capacity arc extinguish chamber of circuit breaker, is characterized in that, comprising: the first housing, the second housing, arc striking piece, the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces;
The first housing and the second housing have the structure of mirror image each other, have several slots on the inner chamber of the first housing, and the inner chamber of the first housing has multi-stage stairs, and described multi-stage stairs is towards gas outlet direction;
The length of the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces increases progressively gradually;
The first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of the first housing, and arc extinguishing grid pieces first progressively increases from top to bottom, more progressively reduces;
Arc striking piece is arranged in the slot at top of the first housing.
2. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
The depth of inner cavity of described the first housing increases by rank to gas outlet direction from contact apertures.
3. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
The wall thickness of described the first housing is even.
4. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
Arc striking piece has a sagging striking pin.
5. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 4, is characterized in that,
Arc striking piece keeps a striking distance from top through 3～5 arc extinguishing grid pieces and with the large opening of moving contact.
6. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
There are chamfering or space in described the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces both sides.
7. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 6, is characterized in that,
The first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces insert in the slot of the first housing, and that the length arrangement of arc extinguishing grid pieces becomes is short-in-long-in-short form.
8. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
The layout of the first arc extinguishing grid pieces, the second arc extinguishing grid pieces, the 3rd arc extinguishing grid pieces makes to open apart from upwards also having 3～5 arc extinguishing grid pieces from moving contact maximum.
9. high-breaking-capacity arc extinguish chamber of circuit breaker as claimed in claim 1, is characterized in that,
Housing is adopted rivet, screw fastening by the first housing and the second 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 |
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| Publication Number | Publication Date |
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| CN102376474A CN102376474A (en) | 2012-03-14 |
| CN102376474B true CN102376474B (en) | 2014-05-28 |
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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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Families Citing this family (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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (3)
| 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 | ||
| CN1323413C (en) * | 2004-11-13 | 2007-06-27 | 常熟开关制造有限公司(原常熟开关厂） | Arc-control device for circuit breaker |
-
2010
- 2010-08-23 CN CN201010260262.3A patent/CN102376474B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| CN102376474A (en) | 2012-03-14 |
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