CN202534613U - Transverse blowing arc extinguishing system of plastic casing breaker - Google Patents
Transverse blowing arc extinguishing system of plastic casing breaker Download PDFInfo
- Publication number
- CN202534613U CN202534613U CN2012201388203U CN201220138820U CN202534613U CN 202534613 U CN202534613 U CN 202534613U CN 2012201388203 U CN2012201388203 U CN 2012201388203U CN 201220138820 U CN201220138820 U CN 201220138820U CN 202534613 U CN202534613 U CN 202534613U
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- China
- Prior art keywords
- arc
- conductive board
- magnetic conductive
- breaker
- sheet
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
The utility model discloses a transverse blowing arc extinguishing system of a plastic casing breaker. The transverse blowing arc extinguishing system comprises a magnet yoke, a movable contact, a static contact, an arc striking piece, an arc extinguishing chamber, an arc separation plate, an arc separation wall and a static contact rod. The arc striking piece is connected with the static contact rod, two sides of the arc striking piece are respectively connected with a magnet guide plate, the arc separation wall is sleeved on the magnet guide plate, and the upper ends of the magnet guide plates extend upwards to the position nearby the root portion of the movable contact. The upper ends of the magnet guide plates of the arc extinguishing system are close to the root portion of the movable contact, and generated arc receives transverse blowing effects of the magnet guide plates in the circuit breaker disconnecting process, so that the arc can quickly move to leftward and rightward to the arc striking piece to shorten burnt time of the arc to the contacts and better protect the contacts. The system further can greatly increase cooling speed of a back area of the circuit breaker, avoids back breakdown of the arc and effectively improves current limit capability of the circuit breaker.
Description
Technical field
The utility model relates to breaker of plastic casing, particularly a kind of arc quenching system of breaker of plastic casing.
Background technology
Existing breaker of plastic casing arc quenching system mainly is made up of several parts such as yoke, striking sheet, arc separating wall, arc control device, flash barrier, moving contact, fixed contact, stationary contact bars; The striking sheet is connected with the stationary contact bar; The both sides of striking sheet are provided with magnetic conductive board, and arc separating wall is enclosed within on the magnetic conductive board and is connected with the stationary contact bar.In the existing breaker of plastic casing arc quenching system, the magnetic conductive board upper end is distant from the distance of moving contact, behind breaker open operation; The horizontal magnetic blow-out force rate that electric arc receives magnetic conductive board a little less than; The transfer velocity of electric arc is just slow like this, and electric arc is easy to contact burning, influences the quality of circuit breaker.Because arc transfer speed is slow, regional temperature is higher behind for circuit breaker simultaneously, causes the behind of electric arc to puncture easily, thereby the circuit breaker short circuit protective value is descended.
The utility model content
To the deficiency of above-mentioned prior art, the purpose of the utility model provides a kind of horizontal electric arc arc quenching system that blows of breaker of plastic casing that electric arc gets into arc control device speed of accelerating.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The horizontal electric arc arc quenching system that blows of a kind of breaker of plastic casing; Comprise yoke, moving contact, fixed contact, striking sheet, arc control device, flash barrier, arc separating wall, stationary contact bar; Said striking sheet is connected with said stationary contact bar; The both sides of said striking sheet respectively are provided with a magnetic conductive board, and said arc separating wall is enclosed within on the said magnetic conductive board, and the upper end of said magnetic conductive board extends upward near said moving contact root.
Preferably; Said magnetic conductive board is made up of a short-range missile magnetic sheet and a little magnetic conductive board, and said short-range missile magnetic sheet is fixedly connected with said striking sheet, and said little magnetic conductive board is embedded in the said arc separating wall; Said arc separating wall is enclosed within on the said short-range missile magnetic sheet, and said short-range missile magnetic sheet contacts with said little magnetic conductive board.
Technique scheme has following beneficial effect: this arc quenching system magnetic conductive board upper end is near the moving contact root; In the process of breaker open operation; The electric arc that produces can receive magnetic conductive board horizontally blows effect; Thereby make electric arc transfer to the striking sheet to the left and right from contact rapidly, thereby accelerate the speed that electric arc gets into arc control device.Compare with existing arc quenching system; The electric arc in transfer contact zone earlier; Shorten the scaling loss time of electric arc, thereby protect contact well, and can also accelerate the circuit breaker cooling rate in zone behind greatly contact; Can avoid occurring the situation that electric arc punctures behind, effectively promote the current limiting capacity of circuit breaker.
Above-mentioned explanation only is the general introduction of the utility model technical scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of specification, below this patent is elaborated with the preferred embodiment and the conjunction with figs. of the utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation that the utility model embodiment striking sheet, arc separating wall are connected with the stationary contact bar.
Embodiment
Describe in detail below in conjunction with the preferred embodiment of accompanying drawing to the utility model.
Like Fig. 1, shown in 2, the horizontal electric arc arc quenching system that blows of this breaker of plastic casing comprises shell 5, is provided with several parts such as yoke 1, moving contact 2, fixed contact 3, stationary contact bar 4, striking sheet 6, arc control device 7, flash barrier 8, arc separating wall 9 in the shell 5.Striking sheet 6 links to each other with stationary contact bar 4, and the both sides of striking sheet 6 respectively are provided with a magnetic conductive board 63, and arc separating wall 9 is enclosed within on the magnetic conductive board 63, and the upper end of magnetic conductive board 63 extends upward near moving contact 2 roots.
Because the length of magnetic conductive board 63 is longer, arc separating wall 9 installs comparatively difficulty, the installation of arc separating wall 9 for ease; Can magnetic conductive board 63 be divided into short-range missile magnetic sheet 62 and little magnetic conductive board 61 two parts, short-range missile magnetic sheet 62 is fixedly connected with striking sheet 6, little magnetic conductive board 61 is embedded in the arc separating wall 9; Again arc separating wall 9 is enclosed within on the short-range missile magnetic sheet 62; And short-range missile magnetic sheet 62 is contacted with little magnetic conductive board 61, and so just can reach the purpose that prolongs magnetic conductive board 63, can make things convenient for the installation of arc separating wall 9 again.
This arc quenching system magnetic conductive board upper end is near the moving contact root, and in the process of breaker open operation, the electric arc of generation can receive the horizontal of magnetic conductive board and blow effect, thereby makes electric arc transfer to the striking sheet to the left and right from contact rapidly, thereby accelerates the speed that electric arc gets into arc control device.Compare with existing arc quenching system; The electric arc in transfer contact zone earlier; Shorten the scaling loss time of electric arc, thereby protect contact well, and can also accelerate the circuit breaker cooling rate in zone behind greatly contact; Can avoid occurring the situation that electric arc punctures behind, effectively promote the current limiting capacity of circuit breaker.
More than the horizontal electric arc arc quenching system that blows of a kind of breaker of plastic casing that the utility model instance is provided carried out detailed introduction; For one of ordinary skill in the art; According to the thought of the utility model embodiment, the part that on embodiment and range of application, all can change, in sum; This description should not be construed as the restriction to the utility model, and all any changes of being made according to the utility model design philosophy are all within the protection range of the utility model.
Claims (2)
1. horizontal electric arc arc quenching system that blows of breaker of plastic casing; Comprise yoke, moving contact, fixed contact, striking sheet, arc control device, flash barrier, arc separating wall, stationary contact bar; Said striking sheet is connected with said stationary contact bar; The both sides of said striking sheet respectively are provided with a magnetic conductive board, and said arc separating wall is enclosed within on the said magnetic conductive board, it is characterized in that: the upper end of said magnetic conductive board extends upward near said moving contact root.
2. the horizontal electric arc arc quenching system that blows of breaker of plastic casing according to claim 1; It is characterized in that: said magnetic conductive board is made up of a short-range missile magnetic sheet and a little magnetic conductive board; Said short-range missile magnetic sheet is fixedly connected with said striking sheet; Said little magnetic conductive board is embedded in the said arc separating wall, and said arc separating wall is enclosed within on the said short-range missile magnetic sheet, and said short-range missile magnetic sheet contacts with said little magnetic conductive board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201388203U CN202534613U (en) | 2012-04-01 | 2012-04-01 | Transverse blowing arc extinguishing system of plastic casing breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201388203U CN202534613U (en) | 2012-04-01 | 2012-04-01 | Transverse blowing arc extinguishing system of plastic casing breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202534613U true CN202534613U (en) | 2012-11-14 |
Family
ID=47135776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201388203U Expired - Lifetime CN202534613U (en) | 2012-04-01 | 2012-04-01 | Transverse blowing arc extinguishing system of plastic casing breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202534613U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441039A (en) * | 2013-06-28 | 2013-12-11 | 江苏西门控电器有限公司 | Low-voltage plastic shell breaker element box device |
| 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 |
| CN107851976A (en) * | 2015-08-25 | 2018-03-27 | Zodiac航空电器 | Electric arc arc-control device and corresponding distribution system for three-phase power distribution system |
-
2012
- 2012-04-01 CN CN2012201388203U patent/CN202534613U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441039A (en) * | 2013-06-28 | 2013-12-11 | 江苏西门控电器有限公司 | Low-voltage plastic shell breaker element box device |
| 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 |
| CN107851976A (en) * | 2015-08-25 | 2018-03-27 | Zodiac航空电器 | Electric arc arc-control device and corresponding distribution system for three-phase power distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
|
| CX01 | Expiry of patent term |