CN102354636A - Arc-extinguishing device of circuit breaker - Google Patents
Arc-extinguishing device of circuit breaker Download PDFInfo
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- CN102354636A CN102354636A CN2011102133201A CN201110213320A CN102354636A CN 102354636 A CN102354636 A CN 102354636A CN 2011102133201 A CN2011102133201 A CN 2011102133201A CN 201110213320 A CN201110213320 A CN 201110213320A CN 102354636 A CN102354636 A CN 102354636A
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- arc
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- control device
- circuit breaker
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Abstract
The invention discloses an arc-extinguishing device of a circuit breaker. The arc-extinguishing device comprises a stationary contact, a movable contact, an arc-extinguishing chamber and an arc-extinguishing gate, wherein the arc-extinguishing chamber is positioned between the stationary contact and the movable contact; the arc-extinguishing gate is arranged in the arc-extinguishing chamber. The arc-extinguishing device of the circuit breaker is characterized in that: a stationary contact arc-striking sheet and a movable contact arc-striking sheet are respectively fixed on the stationary contact and the movable contact; the stationary contact arc-striking sheet and the movable contact arc-striking sheet respectively extend to two ends of the arc-extinguishing gate; and gate sheets in the arc-extinguishing gate are in stepped distribution in a long-to-short manner from one side of the stationary contact arc-striking sheet to one side of the movable contact arc-striking sheet. By adoption of the arc-extinguishing device of the circuit breaker, the defects that arcs stay in the arc-extinguishing gate for a long time, that the arcs are non-uniformly introduced and that the arcs cannot be quickly and effectively extinguished are overcome.
Description
Technical field
the present invention relates to a kind of arc-control device of circuit breaker.
Background technology
because the existence of electric arc in the circuit breaker breaking course postpones the circuit breaker break-time, the scaling loss contact, even can cause in severe case and catch fire and explode.For this reason, all be provided with arc-control device in the miniature circuit breaker usually, the electric arc life period is shortened as far as possible, alleviating harm, and improve the breaking capacity of circuit breaker.At present, what miniature circuit breaker was the most frequently used is the metal gate arc-control device, and the arc control device rear end of this arc-control device is provided with arc-chute, and arc-chute is arranged between two vulcanized fiber boards by the consistent stalloy of multi-disc length and constitutes, and stalloy is insulated from each other.Yet the shortcoming of this arc-control device is: 1, arc-chute produces a little apart from electric arc---dynamic and static contact is far away, can not fast and effectively electric arc be introduced arc-chute, and it is extinguished; 2, in fact in the circuit breaker electric arc often all be to produce from moving contact one side, be transferred to the first side of stationary contact then fast, be introduced in the arc-chute at last and eliminate, and when the inner grid sheet length of arc-chute is arranged unanimity, be unfavorable for that electric arc introduces rapidly and uniformly.
Summary of the invention
the present invention seeks to: a kind of arc-control device of circuit breaker is provided, and can overcoming electric arc that existing apparatus exists, to get into the arc-chute time long, and the electric arc introducing is inhomogeneous, can not be fast and effectively with the shortcoming of arc extinction.
technical scheme of the present invention is: a kind of arc-control device of circuit breaker comprises quiet, moving contact, arc control device between quiet, moving contact and be located at the arc-chute in the arc control device; It is characterized in that being fixed with respectively on said fixed contact and the moving contact fixed contact striking sheet and moving contact striking sheet, said fixed contact striking sheet and moving contact striking sheet extend to the two ends of arc-chute respectively; And the grid sheet in the said arc-chute is from stepped from long to short the arranging of fixed contact striking sheet one side to moving contact striking sheet one side.
are further, and the grid sheet in the arc-chute described in the present invention is divided into some grid sheet groups according to the length difference, and each grid sheet group is made up of the identical grid sheet of two leaf length at least.
are in concrete embodiment; Grid sheet in the arc-chute described in the present invention is divided into first, second, third and the four or four grid sheet group from long to short; First three grid sheet group is made up of the identical grid sheet of three leaf length, and the 4th grid sheet group is made up of the identical grid sheet of four leaf length.
are further, and arc-chute described in the present invention also comprises the locating cover that grips the grid sheet, and the both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover is provided with.
are the same with routine techniques, and separation is with insulation between the adjacent grid sheet among the present invention, and grid sheet, quiet, moving contact striking sheet be stalloy, and locating cover then adopts vulcanized fiber board to process.
are further; Arc control device described in the present invention are buckled each other by loam cake and lower cover and surround; Be equipped with flash barrier between the top of said quiet, moving contact striking sheet and the loam cake, and be equipped with down flash barrier between the below of quiet, moving contact striking sheet and the lower cover.
further, upper and lower flash barrier described in the present invention is formed by punching press stalloy and injection moulding nylon dimple close-fitting, stalloy is pressed into the cavity internal fixation at injection moulding nylon dimple center.The nylon material of injection moulding and the stalloy at center are beneficial to the generation magnetic blow-out of being heated in arc control device.
Moving contact striking sheet described in
the present invention links to each other with moving contact through connecting lead, and moving contact striking sheet is fixed with last flash barrier and following flash barrier simultaneously.Be that being connected between moving contact striking sheet and the moving contact is flexible coupling among the present invention, when specifically producing, the two ends that connect lead respectively with moving contact striking sheet with moving contact welding fix.Specifically also be that welding is fixing between moving contact striking sheet and the upper and lower part flash barrier among the present invention simultaneously, do like this to help magnetic blow-out.
Fixed contact striking sheet is that paster is welded and fixed on the fixed contact described in
the present invention.
The stepped arrangement of grid sheet in the arc-chute among
the present invention helps the even introducing of electric arc.Because electric arc often all produces from moving contact one side in the circuit breaker; So what will be provided with near the grid sheet of moving contact striking sheet one side is shorter; Help generation and transfer vacating space for electric arc; And will near the grid sheet of fixed contact striking sheet one side be provided with longer, then help reducing the resistance that electric arc gets into arc-chute.
Advantage of the present invention is:
are the arc-control device of this circuit breaker provided by the invention 1.; Its electric arc that will accumulate on the dynamic and static contact is dispersed on the dynamic and static contact striking sheet; And then re-boot to the arc-chute two ends; Fast electric arc is introduced in the arc-chute and extinguished, effectively protected dynamic and static contact, effectively improve the breaking capacity of circuit breaker not by scaling loss.
are the arc-control device of this circuit breaker provided by the invention 2.; Grid sheet in its arc-chute adopts stepped arrangement from long to short; Make electric arc to introduce arc-chute more quick and uniformly, improved the arc extinguishing efficient of arc-chute greatly.
are the arc-control device of this circuit breaker provided by the invention 3.; Owing to improved the breaking capacity of circuit breaker greatly; Not only suitablely be applied to small-sized AC circuit breaker, in the suitable too small-sized DC circuit breaker that is applied to arc extinguishing is had relatively high expectations.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is a structural representation of the present invention.
wherein: 1, fixed contact; 2, moving contact; 3, arc control device; 4, arc-chute; 4a, first grid sheet group; 4b, the second grid sheet group; 4c, the 3rd grid sheet group; 4d, the 4th grid sheet group; 5, fixed contact striking sheet; 6, moving contact striking sheet; 7, locating cover; 8, following flash barrier.
Embodiment
embodiment: as shown in Figure 1; The arc-control device of this circuit breaker that present embodiment provides; It is by quiet, moving contact 1,2; At quiet, moving contact 1, buckle the arc control device 3 that surround each other between 2 and by loam cake (not drawing among the figure) and lower cover (not drawing among the figure); Be positioned at the arc-chute 4 of arc control device 3, be fixed to fixed contact striking sheet 5 and moving contact striking sheet 6 on fixed contact 1 and the moving contact 2 respectively, be located at the top and the last flash barrier (not drawing among the figure) between the loam cake of quiet, moving contact striking sheet 5,6 and be located at below and the following flash barrier 8 between the lower cover quiet, moving contact striking sheet 5,6 and constitute jointly.
Fixed contact striking sheet 5 is welded and fixed on the fixed contact 1 for paster described in
present embodiment, and is as shown in Figure 1, and this fixed contact striking sheet 5 extends to the left side of arc-chute 4.And said moving contact striking sheet 6 links to each other with moving contact 2 through connecting lead (not marking among the figure), and the two ends that connect lead are fixing with moving contact 2 welding with moving contact striking sheet 6 respectively.And the both sides of moving contact striking sheet 6 are equipped with some convexities, and correspondence is supported in the location hole that flash barrier and following flash barrier 8 be provided with welding again and fixed.Said moving contact striking sheet 6 extends to the right side of arc-chute 4.
said arc-chute 4 is made up of 13 sheet grating sheets and 7 of locating covers that are used to grip the grid sheet.Grid sheets in the present embodiment in the arc-chute 4 are divided into first, second, third and the four or four grid sheet group 4a, 4b, 4c, 4d from long to short; First three grid sheet group 4a, 4b, 4c are made up of the identical grid sheet of three leaf length, and the 4th grid sheet group 4d is made up of the identical grid sheet of four leaf length.These four grid sheet group 4a, 4b, 4c, 4d are from stepped from long to short the arranging of fixed contact striking sheet 5 one sides to moving contact striking sheet 6 one sides.The both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover 7 is provided with.The same with routine techniques, separation is with insulation between the grid sheet in the present embodiment, and grid sheet, quiet, moving contact striking sheet 5,6 be stalloy, and locating cover 7 then adopts vulcanized fiber board to process.
Go up flash barrier described in
present embodiment and lay respectively at the upper and lower of arc control device 3, loam cake and the lower cover of the arc-chute in the arc control device 34 with circuit breaker separated with following flash barrier 8.And last flash barrier is formed by punching press stalloy and injection moulding nylon dimple close-fitting with following flash barrier 8, and stalloy is pressed into the cavity internal fixation at injection moulding nylon dimple center.The nylon material of injection moulding and the stalloy at center are beneficial to the generation magnetic blow-out of being heated in arc control device 3.
The stepped arrangement of grid sheet in the arc-chute 4 in
present embodiment helps the even introducing of electric arc.Because electric arc often all produces from moving contact 2 one sides in the circuit breaker; So what will be provided with near the grid sheet of moving contact striking sheet 6 one sides is shorter; Help generation and transfer vacating space for electric arc; And will near the grid sheet of fixed contact striking sheet 5 one sides be provided with longer, then help reducing the resistance that electric arc gets into arc-chute 4.
The advantage of present embodiment is following
1. present embodiment will accumulate in electric arc on quiet, the moving contact 1,2 and be dispersed on quiet, the moving contact striking sheet 5,6; And then re-boot to arc-chute 4 two ends; Fast electric arc is introduced in the arc-chute 4 and extinguished; Effectively protect quiet, moving contact 1,2 not by scaling loss, effectively improved the breaking capacity of circuit breaker.
2. in the present embodiment grid sheets in the arc-chute 4 adopt stepped arrangement from long to short, make that electric arc can be more quick and introducing arc-chute 4 uniformly, improved the arc extinguishing efficient of arc-chute 4 greatly.
3. present embodiment is owing to improved the breaking capacity of circuit breaker greatly, and the small-sized AC circuit breaker that not only suits to be applied to is in the suitable too small-sized DC circuit breaker that is applied to arc extinguishing is had relatively high expectations.
the foregoing description certainly only are explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.The all spirit of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (8)
1. the arc-control device of a circuit breaker comprises quiet, moving contact (1,2), is positioned at the arc control device (3) between quiet, the moving contact (1,2) and is located at the arc-chute (4) of arc control device (3); It is characterized in that being fixed with fixed contact striking sheet (5) and moving contact striking sheet (6) on said fixed contact (1) and the moving contact (2) respectively, said fixed contact striking sheet (5) and moving contact striking sheet (6) extend to the two ends of arc-chute (4) respectively; And the grid sheet in the said arc-chute (4) is from stepped from long to short the arranging of fixed contact striking sheet (5) one side to moving contact striking sheet (6) one sides.
2. the arc-control device of circuit breaker according to claim 1 is characterized in that the grid sheet in the said arc-chute (4) is divided into some grid sheet groups according to the length difference, and each grid sheet group is made up of the identical grid sheet of two leaf length at least.
3. the arc-control device of circuit breaker according to claim 2; It is characterized in that grid sheet in the said arc-chute (4) be divided into from long to short first, second, third with the four or four grid sheet group (4a, 4b, 4c, 4d) composition; First three grid sheet group (4a, 4b, 4c) is made up of the identical grid sheet of three leaf length, and the 4th grid sheet group (4d) is made up of the identical grid sheet of four leaf length.
4. according to the arc-control device of claim 1 or 2 or 3 described circuit breakers; It is characterized in that said arc-chute (4) also comprises the locating cover (7) that grips the grid sheet; The both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover (7) is provided with.
5. the arc-control device of circuit breaker according to claim 1; It is characterized in that said arc control device (3) are buckled by loam cake and lower cover each other surrounds; Be equipped with flash barrier between the top of said quiet, moving contact striking sheet (5,6) and the loam cake, and be equipped with down flash barrier (8) between the below of quiet, moving contact striking sheet (5,6) and the lower cover.
6. the arc-control device of circuit breaker according to claim 5 is characterized in that said upward flash barrier and following flash barrier (8) are by punching press stalloy and injection moulding nylon dimple close-fitting composition.
7. the arc-control device of circuit breaker according to claim 5 it is characterized in that said moving contact striking sheet (6) links to each other with moving contact (2) through connecting lead, and moving contact striking sheet (6) is fixing with last flash barrier and following flash barrier (8) simultaneously.
8. the arc-control device of circuit breaker according to claim 1 is characterized in that said fixed contact striking sheet (5) is welded and fixed on the fixed contact (1) for paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102133201A CN102354636A (en) | 2011-07-28 | 2011-07-28 | Arc-extinguishing device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102133201A CN102354636A (en) | 2011-07-28 | 2011-07-28 | Arc-extinguishing device of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102354636A true CN102354636A (en) | 2012-02-15 |
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ID=45578176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102133201A Pending CN102354636A (en) | 2011-07-28 | 2011-07-28 | Arc-extinguishing device of circuit breaker |
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| Country | Link |
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| CN (1) | CN102354636A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847583A (en) * | 2017-03-03 | 2017-06-13 | 上海学超信息科技有限公司 | A kind of arc-chute of non-isometric compact structure |
| CN108074765A (en) * | 2018-01-17 | 2018-05-25 | 安徽中骄智能科技有限公司 | A kind of electrode plate absorption type electrical contact arc-control device being closed based on linkage |
| CN109285704A (en) * | 2018-10-16 | 2019-01-29 | 浙江正泰电器股份有限公司 | The arc extinguishing structure of double break contact |
| CN113593994A (en) * | 2018-06-15 | 2021-11-02 | 上海电器科学研究所（集团）有限公司 | Conductive loop system with excellent magnetic blow effect |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60202632A (en) * | 1984-03-27 | 1985-10-14 | テンパ−ル工業株式会社 | Device for extinguishing wiring breaker |
| CN2457727Y (en) * | 2000-10-13 | 2001-10-31 | 郑巨华 | High split small braker |
| CN101625934A (en) * | 2008-07-09 | 2010-01-13 | 三菱电机株式会社 | Circuit breaker |
| CN201576597U (en) * | 2010-01-14 | 2010-09-08 | 西安科灵自动化科技有限公司 | 3300V and below 3300V alternating-current high-voltage isolator |
| CN102129925A (en) * | 2011-04-02 | 2011-07-20 | 常熟开关制造有限公司(原常熟开关厂） | Arc-extinguishing chamber of circuit breaker with free-eliminating device |
| CN202150427U (en) * | 2011-07-28 | 2012-02-22 | 法泰电器（江苏）股份有限公司 | Arc extinguishing device of breaker |
-
2011
- 2011-07-28 CN CN2011102133201A patent/CN102354636A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60202632A (en) * | 1984-03-27 | 1985-10-14 | テンパ−ル工業株式会社 | Device for extinguishing wiring breaker |
| CN2457727Y (en) * | 2000-10-13 | 2001-10-31 | 郑巨华 | High split small braker |
| CN101625934A (en) * | 2008-07-09 | 2010-01-13 | 三菱电机株式会社 | Circuit breaker |
| CN201576597U (en) * | 2010-01-14 | 2010-09-08 | 西安科灵自动化科技有限公司 | 3300V and below 3300V alternating-current high-voltage isolator |
| CN102129925A (en) * | 2011-04-02 | 2011-07-20 | 常熟开关制造有限公司(原常熟开关厂） | Arc-extinguishing chamber of circuit breaker with free-eliminating device |
| CN202150427U (en) * | 2011-07-28 | 2012-02-22 | 法泰电器（江苏）股份有限公司 | Arc extinguishing device of breaker |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847583A (en) * | 2017-03-03 | 2017-06-13 | 上海学超信息科技有限公司 | A kind of arc-chute of non-isometric compact structure |
| CN108074765A (en) * | 2018-01-17 | 2018-05-25 | 安徽中骄智能科技有限公司 | A kind of electrode plate absorption type electrical contact arc-control device being closed based on linkage |
| CN113593994A (en) * | 2018-06-15 | 2021-11-02 | 上海电器科学研究所（集团）有限公司 | Conductive loop system with excellent magnetic blow effect |
| CN113593994B (en) * | 2018-06-15 | 2023-05-05 | 上海电器科学研究所（集团）有限公司 | Conductive loop system with excellent magnetic blowing effect |
| CN109285704A (en) * | 2018-10-16 | 2019-01-29 | 浙江正泰电器股份有限公司 | The arc extinguishing structure of double break contact |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20120215 |