CN203150502U - High-breaking miniature circuit breaker arc extinguishing system - Google Patents
High-breaking miniature circuit breaker arc extinguishing system Download PDFInfo
- Publication number
- CN203150502U CN203150502U CN 201320110614 CN201320110614U CN203150502U CN 203150502 U CN203150502 U CN 203150502U CN 201320110614 CN201320110614 CN 201320110614 CN 201320110614 U CN201320110614 U CN 201320110614U CN 203150502 U CN203150502 U CN 203150502U
- Authority
- CN
- China
- Prior art keywords
- arc
- circuit breaker
- arc extinguishing
- shell
- miniature circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching Effects 0.000 claims description 13
- 230000003068 static Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model provides a high-breaking miniature circuit breaker arc extinguishing system which can improve breaking capability and meet safety requirements of a power grid. The arc extinguishing system comprises a shell, a static contact, a moving contact, arc ignition sheets and an arc extinguishing chamber, wherein the static contact, the moving contact, the arc ignition sheets and the arc extinguishing chamber are arranged in the shell, the static contact is provided with a static contact silver point, the arc extinguishing chamber comprises a plurality of arc extinguishing grid sheets and baffle plates, the arc ignition sheets are fixed on the shell through a flash barrier, the number of the arc ignition sheets is two, an arc ignition angle is arranged between the two arc ignition sheets, and the lower part of the shell is provided with vent holes. The high-breaking miniature circuit breaker arc extinguishing system provided by the utility model substantially improves breaking capability of a miniature circuit breaker and product reliability and has the advantages of a simple structure, low cost and the like.
Description
Technical field
The utility model relates to a kind of arc quenching system, especially a kind of high breaking miniature circuit breaker arc quenching system.
Background technology
Miniature circuit breaker refers to the terminal of distribution network, plays overload and the usefulness of short-circuit protection and under normal circumstances as the low-voltage circuit breaker of the usefulness of the not frequent operation conversion of circuit, be mainly used in places such as industry, commerce, high level and residential houses in distribution.Along with the construction of system of State Grid, net capacity constantly increases, and the short circuit current that grid short circuit produces also increases thereupon, and existing low breaking capacity miniature circuit breaker more and more can not satisfy the power grid security needs.Under the situation that Short-Circuit High Current occurs, dynamic/static contact scolds out the electric arc of generation can not enter arc control device fast to carry out blow-out, cause the arcing time long, destroy the insulation system of electrical network and the electrical equipment in the scaling loss use, but while fire hazard and large area blackout are for the enterprises and individuals brings enormous economic loss.
The utility model content
The utility model provides a kind of raising breaking capacity, satisfies the high breaking miniature circuit breaker arc quenching system of power grid security requirement.
Realize a kind of high breaking miniature circuit breaker arc quenching system of the utility model purpose, comprise shell, be positioned at fixed contact, moving contact, striking sheet and the arc control device of shell, described fixed contact is provided with the fixed contact silver point, described arc control device comprise a plurality of arc extinguishing grid pieces and baffle plate, and described striking sheet is fixed on the shell by flash barrier; Described striking sheet has two, is provided with arc leading angle between two striking sheets, and described shell below is provided with steam vent.
Described arc extinguishing grid pieces is that asymmetric alternating expression is up and down arranged.
The beneficial effect of a kind of high breaking miniature circuit breaker arc quenching system of the present utility model is as follows:
A kind of high breaking miniature circuit breaker arc quenching system of the present utility model has increased the breaking capacity of miniature circuit breaker greatly, has improved product reliability, and has had simple in structure, low cost and other advantages.
Description of drawings
Fig. 1 is the structural representation of a kind of high breaking miniature circuit breaker arc quenching system of the present utility model.
Fig. 2 is the fundamental diagram of a kind of high breaking miniature circuit breaker arc quenching system of the present utility model.
Embodiment
As shown in Figure 1, a kind of high breaking miniature circuit breaker arc quenching system of the present utility model, comprise shell 1, be positioned at fixed contact 3, moving contact 2, striking sheet and the arc control device 7 of shell 1, described fixed contact 3 is provided with fixed contact silver point 4, described arc control device 7 comprise a plurality of arc extinguishing grid pieces 9 and baffle plate 8, and described striking sheet is fixed on the shell 1 by flash barrier 6; Described striking sheet has two, is provided with arc leading angle 5 between two striking sheets, and described shell 1 below is provided with steam vent 10.
Described arc extinguishing grid pieces 9 is that asymmetric alternating expression is up and down arranged.
The operation principle of a kind of high breaking miniature circuit breaker arc quenching system of the present utility model is as follows:
As shown in Figure 2, two striking sheets and arc leading angle 5 all adopt soft magnetic material, are arranged to similar " U " shape structure, produce magnetic field relatively uniformly around contact, make electric arc enter arc control device 7 under the Lorentz force effect.The arc extinguishing grid pieces 9 of arc control device 7 has carried out optimal design, and for asymmetric alternating expression is up and down arranged, arc extinguishing grid pieces 9 big fillet designs have strengthened striking and the arc extinguishing function of arc control device 7, thereby have shortened the circuit breaker arcing time.The exhaust duct of the gas that produces by shell optimization is discharged to beyond the circuit breaker, reduced the resistance of 1 pair of air-flow of shell.
Embodiment recited above is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; design under the spiritual prerequisite not breaking away from the utility model; various distortion and improvement that the common engineers and technicians in this area make technical solutions of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (2)
1. high breaking miniature circuit breaker arc quenching system, comprise shell, be positioned at fixed contact, moving contact, striking sheet and the arc control device of shell, it is characterized in that: described fixed contact is provided with the fixed contact silver point, described arc control device comprise a plurality of arc extinguishing grid pieces and baffle plate, and described striking sheet is fixed on the shell by flash barrier; Described striking sheet has two, is provided with arc leading angle between two striking sheets, and described shell below is provided with steam vent.
2. a kind of high breaking miniature circuit breaker arc quenching system according to claim 1 is characterized in that: described arc extinguishing grid pieces is that asymmetric alternating expression is up and down arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110614 CN203150502U (en) | 2013-03-12 | 2013-03-12 | High-breaking miniature circuit breaker arc extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110614 CN203150502U (en) | 2013-03-12 | 2013-03-12 | High-breaking miniature circuit breaker arc extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150502U true CN203150502U (en) | 2013-08-21 |
Family
ID=48978010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320110614 Active CN203150502U (en) | 2013-03-12 | 2013-03-12 | High-breaking miniature circuit breaker arc extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150502U (en) |
-
2013
- 2013-03-12 CN CN 201320110614 patent/CN203150502U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING BEIYUAN ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER NAME: BEIJING ZHENGBEIYUAN ELECTRICAL APPLIANCE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 101100, Tongzhou District, Beijing Fu Road south 8, 1, 1, 01 Patentee after: Electrical Appliances Co., Ltd of Beijing North unit Address before: 101100, Tongzhou District, Beijing Fu Road south 8, 1, 1, 01 Patentee before: Beijing Zhengbeiyuan Electrical Appliance Co., Ltd. |