Vacuum circuit breaker based on T-shaped double break vacuum arc-extinguishing chamber

A vacuum interrupter and vacuum circuit breaker technology, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of the reliability of the whole machine, many operating mechanisms, and increased costs, so as to ensure consistency, Effects of cost reduction and reliability improvement

Inactive Publication Date: 2013-04-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If we want to promote the application of vacuum interrupters to ultra-high voltage and ultra-high voltage fields, we can only adopt a series connection of multiple vacuum circuit breakers with single-break interrupters. The reliability of the whole machine is affected

Method used

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  • Vacuum circuit breaker based on T-shaped double break vacuum arc-extinguishing chamber
  • Vacuum circuit breaker based on T-shaped double break vacuum arc-extinguishing chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Same as the prior art, there are vacuum interrupter 9, insulating ceramic column 13, operating mechanism 14 and control box 15, control signal input terminal 16 is arranged on control box 15, and operating mechanism is arranged in insulating ceramic column 13 14 connected insulating connecting rod 12, the upper end of the insulating connecting rod 12 is connected with the moving conductive rod 11 placed in the guide sleeve 10, the difference from the prior art is that the moving conductive rod 11 is terminated with a vacuum arc extinguishing The moving contact connecting plate 8 of the chamber 9 is provided with a left moving contact 7 and a right moving contact 6 at the left and right ends of the moving contact connecting plate 8 respectively. The moving contact connecting plate 8 can be a high-strength alloy plate in the shape of a "one" or a "T", and after connecting with the moving conductive rod 11, it forms a "T" shape as a whole. The left static contact 5 and the...

Embodiment 2

[0011] Embodiment 2 of the present invention is a specific way of connecting Embodiment 1 in series to increase the withstand voltage level. Such as figure 2 Shown: three embodiments 1 of the present invention are connected in series, the outgoing line 2 of the first embodiment 1 is connected with the incoming line 1 of the second embodiment 1, and so on. The main control unit 17 controls the synchronous closing and opening of the three embodiments 1 through the optical fiber 18, and the withstand voltage can reach 500KV.

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Abstract

The invention discloses a vacuum circuit breaker based on a T-shaped double break vacuum arc-extinguishing chamber, which can effectively reduce the cost, improves the voltage withstanding level of a single arc-extinguishing chamber, is easy to be in series connection to form an ultrahigh-voltage and superhigh-voltage vacuum circuit breaker. The vacuum circuit breaker comprises a vacuum arc-extinguishing chamber, an insulated ceramic column, an operating mechanism and a control case, a control signal input end is arranged on the control case, the insulated ceramic column is internally provided with an insulated connection rod which is connected with the operating mechanism, the upper end of the insulated connection rod is connected with a movable conducting rod in a guiding sleeve, the upper end of the movable conducting rod is connected with a movable contact connecting board which is arranged in the vacuum arc-extinguishing chamber, the transverse left end and the transverse right end of the movable contact connecting plate are respectively and correspondingly provided with a left movable contact and a right movable contact, a left static contact and a right static contact are correspondingly and fixedly arranged on the left movable contact and the right movable contact, the left static contact is connected with an incoming line, the right static contact is connected with an outgoing line, and bushings are sleeved on the incoming line and the outgoing line.

Description

technical field [0001] The invention relates to a vacuum circuit breaker, especially a vacuum circuit breaker based on a T-shaped double-fracture vacuum interrupter that can effectively reduce costs, improve the withstand voltage level of a single interrupter, and be easy to connect in series to form ultra-high voltage and ultra-high voltage vacuum circuit breakers. breaker. Background technique [0002] At present, SF6 circuit breakers are widely used in high voltage fields. SF6 has been officially designated as a greenhouse effect gas. Its lifetime in the air is more than 3000 years, and its impact is 24,900 times that of CO2. It is necessary to limit its use and emissions, so the development of vacuum circuit breakers to higher voltage The gradual replacement of SF6 circuit breakers by grade development has become an urgent problem to be solved. The existing vacuum circuit breaker is basically a vacuum circuit breaker with a single-break interrupter. Its structure is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66H01H33/664
Inventor 廖敏夫段雄英葛国伟邹积岩
Owner DALIAN UNIV OF TECH
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