CN201229868Y - Arc-extinguishing chamber for circuit breaker - Google Patents
Arc-extinguishing chamber for circuit breaker Download PDFInfo
- Publication number
- CN201229868Y CN201229868Y CNU2008200406551U CN200820040655U CN201229868Y CN 201229868 Y CN201229868 Y CN 201229868Y CN U2008200406551 U CNU2008200406551 U CN U2008200406551U CN 200820040655 U CN200820040655 U CN 200820040655U CN 201229868 Y CN201229868 Y CN 201229868Y
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- Prior art keywords
- arc
- slot
- arc extinguishing
- notch
- side plate
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Abstract
The utility model relates to an interrupter of a small current-limiting circuit breaker with high short-circuit breaking capacity, which comprises a left side plate, a right side plate and a mounting shell which is formed by rear panels. The interrupter is characterized in that the right sidewall of the left side plate is provided with a plurality of convex edges; two adjacent convex edges form a slot; the left sidewall of the right side plate is provided with a plurality of convex edges; two adjacent convex edges form a slot which fits with the slot formed by the two adjacent convex edges on the right sidewall of the left side plate; the real panels are provided with air outlets; a grid board group is inserted into each group of matching slots; each grid board group comprises arc quenching grid plates and insulation boards, which are alternatively arranged; the plate bodies between the top layer and the bottom layer in each group of the grid plates are all arc quenching grid plates; rabbets are arranged on the arc quenching grid plates and the insulation boards; and the depth of the rabbets on the arc quenching grid plates is less than the depth of the rabbets on the insulation boards. The utility model can effectively inhibit the repeated breakdown of electric arcs without changing the volume of the original interrupter, thus improving the breaking capacity of the small current-limiting circuit breaker.
Description
Technical field
The utility model relates to a kind of low-voltage miniature circuit breaker arc control device, especially a kind of current-limiting type miniature circuit breaker arc control device that are applicable to that short circuit breaking capacity is high.
Background technology
At present, miniature circuit breaker often adopts grid sheet arc extinguishing technology.U type that arc control device are made by ferromagnetic material or V-type grid sheet and assemble by at least one side plate that insulating material is made.When miniature circuit breaker divides deenergizing to produce electric arc, because the existence of grid sheet, the magnetic flux path that arc current produces in the air around distorts, magnetized grid sheet produces a kind of electromagnetic force electric arc is pulled to arc control device, to the cutting apart and cool off of electric arc, arc resistance increases by the grid sheet, thereby arc voltage also improves, when arc voltage reached certain value, electric arc will be extinguished.But utilize grid sheet arc extinguishing, the electric arc re-breakdown phenomenon is more serious, causes arc voltage to fall rise with arc current, thereby prolongs the arcing time, and the current limiting performance variation influences the breaking capacity of miniature circuit breaker.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of under the situation that does not change original arc control device volume, can effectively suppress the electric arc re-breakdown phenomenon, improves the arc extinguishing chamber for breaker of the breaking capacity of current-limiting type miniature circuit breaker.
The technical scheme that provides according to the utility model, described arc extinguishing chamber for breaker, comprise left plate, the installation housing that right plate and rear board form, the right side wall of left plate is provided with some fins, adjacent two fins form slot, the left side wall of right plate is provided with some fins, adjacent two fins form the slot that cooperates with slot, offer venthole on the plate in the back, grafting grid sheet group in slot that every assembly is closed and slot, every group of grid sheet group includes arc extinguishing grid pieces and the insulation board that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group is arc extinguishing grid pieces, offer notch on the arc extinguishing grid pieces, also offer notch on the insulation board, and the degree of depth of the notch offered of arc extinguishing grid pieces is less than the degree of depth of the notch of offering on the insulation board.
The openend of described notch is the uncovered shape of "/" shape.
The utility model can effectively suppress the electric arc re-breakdown phenomenon under the situation that does not change original arc control device volume, improve the breaking capacity of current-limiting type miniature circuit breaker.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of the installation housing that formed by left plate, right plate and rear board.
Fig. 3 is the structural representation of the arc extinguishing grid pieces in the utility model.
Fig. 4 is the structural representation of the insulation board in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: arc control device of the present utility model mainly are made up of left plate 1, right plate 2, fin 3, fin 4, slot 5, slot 6, rear board 7, venthole 8, grid sheet group 9, arc extinguishing grid pieces 10, insulation board 11, notch 12, notch 13 etc.
Arc extinguishing chamber for breaker of the present utility model, comprise left plate 1, the installation housing that right plate 2 and rear board 7 form, the right side wall of left plate 1 is provided with some fins 3, adjacent two fins 3 form slot 5, the left side wall of right plate 2 is provided with some fins 4, adjacent two fins 4 form the slot 6 that cooperates with slot 5, offer venthole 8 on the plate 7 in the back, grafting grid sheet group 9 in slot that every assembly is closed 5 and slot 6, every group of grid sheet group 9 includes arc extinguishing grid pieces 10 and the insulation board 11 that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group 9 is arc extinguishing grid pieces 10, offer notch 12 on the arc extinguishing grid pieces 10, also offer notch 13 on the insulation board 11, and the degree of depth of the notch 12 offered of arc extinguishing grid pieces 10 is less than the degree of depth of the notch of offering on the insulation board 11 13.
The openend of notch 12 is the uncovered shape of "/" shape; The openend of described notch 13 is the uncovered shape of "/" shape.
As shown in Figure 1, arc extinguishing grid pieces 10 and insulation board 11 are alternately fitted and are installed, and form a plurality of grid sheet groups 9, and shown in Figure 3, arc extinguishing grid pieces 10 is a ferromagnetic material, and arc extinguishing grid pieces 10 is provided with notch 12.This notch 12 is formed the junction smooth transition by "/" type open section and rectangular aperture section.Shown in Figure 2, insulation board 11 is the high-temperature insulation gas exhausted material, also offers notch 13 on the insulation board 11, and described notch 13 is formed the junction smooth transition by "/" type open section and rectangular aperture section.The openend shape of arc extinguishing grid pieces 10 and insulation board 11 is consistent, and the degree of depth of notch 12 is less than the degree of depth of notch 13.Grid sheet group 9 is directly inserted the slot 5 and slot 6 that housing is installed, and slot 5 has chamfering with the insertion end of slot 6, is convenient to the insertion of grid sheet group 9.The spacing of the fin 4 spacings decision grid sheet group 9 that fin 3 spacings that the right side wall of left plate 1 is provided with and the left side wall of right plate 2 are provided with, the width of fin 3 and fin 4 does not influence electric arc and enters arc control device, and with arc extinguishing grid pieces 10 sufficient the contact is arranged.Rear board 7 rear sides have a plurality of rectangular openings, cooperate with the installation site of arc extinguishing grid pieces 10, form the venthole 8 of arc control device.
Each grid sheet group 9 of the present utility model all forms one or more narrow slits, arc control device combine the design feature of grid sheet arc extinguishing and narrow slit arc extinguishing, when miniature circuit breaker produces electric arc in breaking course, arc ignition system is introduced arc control device with electric arc, arc extinguishing grid pieces 10 is divided into electric arc the short arc of multistage series connection, the gas cooled electric arc arc column that housing produces is installed simultaneously, arc resistance is increased, improve arc voltage.When part electric arc enters the narrow slit structure that is formed by notch 13 in the grid sheet group 9, the reverberation air-flow of arc control device rear end gets clogged.Simultaneously, 11 pairs of electric arcs of insulation board produce cooling effect, reduce the temperature of thermal current.Because insulation board 11 is the high temperature gas exhausted material, absorbed arc energy on the one hand, the gas of Chan Shenging can improve the medium recovery strength of voltage contact area on the other hand, suppresses the re-breakdown phenomenon of electric arc, thereby improves the current limiting performance and the breaking capacity of miniature circuit breaker.
Claims (3)
1, a kind of arc extinguishing chamber for breaker, comprise left plate (1), the installation housing that right plate (2) and rear board (7) form, it is characterized in that: the right side wall of left plate (1) is provided with some fins (3), adjacent two fins (3) form slot (5), the left side wall of right plate (2) is provided with some fins (4), adjacent two fins (4) form the slot (6) that cooperates with slot (5), offer venthole (8) on the plate (7) in the back, grafting grid sheet group (9) in slot (5) that every assembly is closed and slot (6), every group of grid sheet group (9) includes arc extinguishing grid pieces (10) and the insulation board (11) that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group (9) is arc extinguishing grid pieces (10), offer notch (12) on the arc extinguishing grid pieces (10), also offer notch (13) on the insulation board (11), and the degree of depth of the notch (12) offered of arc extinguishing grid pieces (10) is less than the degree of depth of the notch of offering on the insulation board (11) (13).
2, arc extinguishing chamber for breaker as claimed in claim 1 is characterized in that: the openend of described notch (12) is the uncovered shape of "/" shape.
3, arc extinguishing chamber for breaker as claimed in claim 1 is characterized in that: the openend of described notch (13) is the uncovered shape of "/" shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200406551U CN201229868Y (en) | 2008-07-16 | 2008-07-16 | Arc-extinguishing chamber for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200406551U CN201229868Y (en) | 2008-07-16 | 2008-07-16 | Arc-extinguishing chamber for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229868Y true CN201229868Y (en) | 2009-04-29 |
Family
ID=40634809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200406551U Expired - Fee Related CN201229868Y (en) | 2008-07-16 | 2008-07-16 | Arc-extinguishing chamber for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229868Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198984A (en) * | 2013-04-10 | 2013-07-10 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN105551855A (en) * | 2016-01-29 | 2016-05-04 | 池州市一鸣电气设备有限公司 | Arc extinguishing chamber |
| WO2016115686A1 (en) * | 2015-01-21 | 2016-07-28 | 赵建平 | Arc extinguish chamber of molded case circuit breaker |
| CN107706063A (en) * | 2017-11-15 | 2018-02-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid and its arc-chutes |
| CN114360979A (en) * | 2021-12-17 | 2022-04-15 | 北京中车赛德铁道电气科技有限公司 | Arc extinguishing grid structure |
-
2008
- 2008-07-16 CN CNU2008200406551U patent/CN201229868Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198984A (en) * | 2013-04-10 | 2013-07-10 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN103198984B (en) * | 2013-04-10 | 2015-05-27 | 四川中光防雷科技股份有限公司 | High-security surge protection device |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN104091734B (en) * | 2014-07-16 | 2016-04-13 | 德力西电气有限公司 | A kind of arc-control device of circuit breaker |
| WO2016115686A1 (en) * | 2015-01-21 | 2016-07-28 | 赵建平 | Arc extinguish chamber of molded case circuit breaker |
| CN105551855A (en) * | 2016-01-29 | 2016-05-04 | 池州市一鸣电气设备有限公司 | Arc extinguishing chamber |
| CN107706063A (en) * | 2017-11-15 | 2018-02-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid and its arc-chutes |
| CN107706063B (en) * | 2017-11-15 | 2020-10-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid piece and arc extinguishing chamber thereof |
| CN114360979A (en) * | 2021-12-17 | 2022-04-15 | 北京中车赛德铁道电气科技有限公司 | Arc extinguishing grid structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20170716 |