CN203325796U - Compressed-air type arc extinguish chamber of circuit breaker - Google Patents
Compressed-air type arc extinguish chamber of circuit breaker Download PDFInfo
- Publication number
- CN203325796U CN203325796U CN2013203181777U CN201320318177U CN203325796U CN 203325796 U CN203325796 U CN 203325796U CN 2013203181777 U CN2013203181777 U CN 2013203181777U CN 201320318177 U CN201320318177 U CN 201320318177U CN 203325796 U CN203325796 U CN 203325796U
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- arc
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Abstract
The utility model provides a compressed-air type arc extinguish chamber of a circuit breaker, which belongs to the technical field of power equipment. The compressed-air type arc extinguish chamber comprises an arcing cover, a main static contact and a main movable contact, wherein a shielding tube is sheathed in the arcing cover, the main static contact and the main movable contact are arranged in the shielding tube, an arc static contact is arranged in the main static contact, a fixed piston is arranged in the center part of the main movable contact, a compressed air cylinder is sheathed on the periphery of the fixed piston and slideably connected with the fixed piston, an air chamber is arranged between the compressed air cylinder and the fixed piston, an air channel is formed on the front end of the compressed air cylinder, a nozzle is fixedly connected with the front end of the compressed air cylinder and matched with the arc static contact of the main static contact, the air channel is communicated with the nozzle, and the opening of the nozzle coaxially faces the arc static contact. After each time of breaking the circuit, the contact is slightly burnt out, so that the compressed-air type arc extinguish chamber is suitable for frequent operation and prolongs the repair period, and can be widely applied in the high voltage and extra high voltage systems.
Description
Technical field
The utility model relates to electrical equipment technical field, specifically a kind of circuit breaker air pressing type arc control device.
Background technology
General, arc control device are the contacts around switch, for limiting the arc space position and accelerating the device of arc extinction.Have the vacuum interrupter circuit breaker under prior art, the vacuum interrupter in vacuum packet is to utilize high vacuum operational insulation arc-extinguishing medium more, realizes a kind of electron tube of the on-off function of power circuit by sealing a pair of contact in a vacuum.Special tectonic due to contact, during the arcing, suitable longitudinal magnetic field can be produced in the contact gap, this magnetic field can make electric arc be evenly distributed on contact surface, maintain low arc voltage, thereby makes vacuum interrupter have dielectric strength resume speed, little arc energy and little corrosion rate after higher arc.Like this, has just improved ability and the useful life of vacuum interrupter drop-out current.Although vacuum interrupter arc extinguishing ability is strong, cut-offs short circuit current large, its complex structure, cost is also very high, and is difficult to maintenance and safeguards.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of circuit breaker air pressing type arc control device are provided.
The technical solution of the utility model realizes in the following manner, these circuit breaker air pressing type arc control device, its structure comprises arc-extinguish chamber, main fixed contact and active contact, be socketed with shielding cylinder in arc-extinguish chamber, be provided with main fixed contact and active contact in shielding cylinder, be provided with the arc fixed contact in main fixed contact, initiatively contact center section is provided with fixed piston, the fixed piston outer race is connected to air cylinder, air cylinder and fixed piston are slidably connected, be set to air chamber between air cylinder and fixed piston, the air cylinder front end offers air flue, the air cylinder front end is fixedly connected with nozzle, the arc fixed contact of nozzle and main fixed contact matches, air flue is communicated with nozzle, nozzle opening coaxially arranges towards the arc fixed contact and with the arc fixed contact.
Be provided with seal gas ring between fixed piston skirt section and air cylinder, the fixed piston head is provided with the air-flow non-return valve.
The beneficial effect that the utility model compared with prior art produced is:
These circuit breaker air pressing type arc control device have advantages of that the cutout amount is large, insulation level is high, the arc extinguishing ability is strong, the life-span is long, volume is little, maintenance is simple, without explosion hazard, pollution-free, noise is low.It is sulfur hexafluoride gas that these circuit breaker air pressing type arc control device adopt dielectric in air cylinder, and the electric arc while reducing separating brake to greatest extent, at the shortest time open circuit.
It is very slight that these circuit breaker air pressing type arc control device cut-off rear contact burning at every turn; be not only applicable to frequent operation; extended the time between overhauls(TBO) simultaneously; can be widely used in high pressure and extra high voltage system, the electrical power trans mission/distribution system that is mainly used in the departments such as electric power, machinery, chemical industry, metallurgy, mine, railway is made control and protection.
This is reasonable in design, simple in structure, safe and reliable, easy to use for these circuit breaker air pressing type arc control device, be easy to safeguard, has good value for applications.
The accompanying drawing explanation
Accompanying drawing 1 is connection status structural representation of the present utility model;
Accompanying drawing 2 is off-state structural representations of the present utility model.
Mark in accompanying drawing means respectively:
1, arc-extinguish chamber, 2, shielding cylinder, 3, main fixed contact, 4, contact initiatively, 5, fixed piston, 6, air cylinder, 7, air chamber, 8, air flue, 9, nozzle, 10, seal gas ring, 11, the air-flow non-return valve, 12, the arc fixed contact.
Embodiment
Below in conjunction with accompanying drawing, circuit breaker air pressing type arc control device of the present utility model are described in detail below.
As shown in drawings, circuit breaker air pressing type arc control device of the present utility model, its structure comprises arc-extinguish chamber 1, main fixed contact 3 and active contact 4, be socketed with shielding cylinder 2 in arc-extinguish chamber 1, be provided with main fixed contact 3 and active contact 4 in shielding cylinder 2, be provided with arc fixed contact 12 in main fixed contact 3, initiatively contact 4 central parts are provided with fixed piston 5, fixed piston 5 outer race are connected to air cylinder 6, air cylinder 6 and fixed piston 5 are slidably connected, be set to air chamber 7 between air cylinder 6 and fixed piston 5, air cylinder 6 front ends offer air flue 8, air cylinder 6 front ends are fixedly connected with nozzle 9, nozzle 9 matches with the arc fixed contact 12 of main fixed contact, air flue 8 is communicated with nozzle 9, nozzle 9 openings coaxially arrange towards arc fixed contact 12 and with arc fixed contact 12.Be provided with seal gas ring 10 between fixed piston 5 skirt sections and air cylinder, the fixed piston head is provided with air-flow non-return valve 11.
These circuit breaker air pressing type arc control device are reasonable in design, simple in structure, safe and reliable, easy to use, be easy to safeguard, have good value for applications.
Claims (2)
1. circuit breaker air pressing type arc control device, it is characterized in that comprising arc-extinguish chamber, main fixed contact and active contact, be socketed with shielding cylinder in arc-extinguish chamber, be provided with main fixed contact and active contact in shielding cylinder, be provided with the arc fixed contact in main fixed contact, initiatively contact center section is provided with fixed piston, the fixed piston outer race is connected to air cylinder, air cylinder and fixed piston are slidably connected, be set to air chamber between air cylinder and fixed piston, the air cylinder front end offers air flue, the air cylinder front end is fixedly connected with nozzle, the arc fixed contact of nozzle and main fixed contact matches, air flue is communicated with nozzle, nozzle opening coaxially arranges towards the arc fixed contact and with the arc fixed contact.
2. circuit breaker air pressing type arc control device according to claim 1, is characterized in that being provided with seal gas ring between fixed piston skirt section and air cylinder, and the fixed piston head is provided with the air-flow non-return valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203181777U CN203325796U (en) | 2013-06-04 | 2013-06-04 | Compressed-air type arc extinguish chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203181777U CN203325796U (en) | 2013-06-04 | 2013-06-04 | Compressed-air type arc extinguish chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203325796U true CN203325796U (en) | 2013-12-04 |
Family
ID=49665108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203181777U Expired - Fee Related CN203325796U (en) | 2013-06-04 | 2013-06-04 | Compressed-air type arc extinguish chamber of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203325796U (en) |
-
2013
- 2013-06-04 CN CN2013203181777U patent/CN203325796U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140604 |