Arc extinguishing device of vacuum circuit breaker

Abstract

The invention discloses an arc extinguishing device of a vacuum circuit breaker. The arc extinguishing device comprises an arc extinguishing chamber, one side of the arc extinguishing chamber is provided with a static contact through a static conducting rod, the other side of the arc extinguishing chamber is provided with a moving contact through a moving conducting rod, and a corrugated sleeve issleeved on the moving conducting rod in the arc extinguishing chamber; and an arc extinguishing assembly is arranged in the arc extinguishing chamber and close to the joint of the moving contact andthe static contact. The arc extinguishing assembly comprises a guide ring groove formed in the arc extinguishing chamber; the guide ring groove is arranged around the perimeter of the arc extinguishing chamber; a partition plate is mounted in the guide ring groove; a pushing assembly is arranged in the guide ring groove; and the pushing assembly is in transmission connection with the moving conducting rod. The arc extinguishing assembly arranged between the moving contact and the static contact provides an arc extinguishing effect for opening of the moving contact and the static contact so asto solve the technical problems that in the prior art, since a vacuum circuit breaker mainly depends on a vacuum arc extinguishing chamber for arc extinguishing, the arc extinguishing speed is low, and the contacts are prone to damage.

Description

technical field [0001] The invention relates to the technical field of vacuum circuit breakers, in particular to an arc extinguishing device for a vacuum circuit breaker. Background technique [0002] With the domestic vacuum interrupter and vacuum circuit breaker technology becoming more and more mature, the output of vacuum circuit breakers in my country has increased significantly every year. Compared with SF6 circuit breakers, the biggest advantage of vacuum circuit breakers is that there is no risk of gas leakage and will not cause environmental pollution. . At the same time, it has many advantages such as good arc extinguishing performance, long electrical life, and high operational reliability. Therefore, vacuum circuit breakers have been widely used by many manufacturers and users in various industries due to their excellent performance. [0003] The vacuum circuit breaker mainly consists of three parts: vacuum interrupter, electromagnetic or spring operating mechan...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an arc extinguishing device for a vacuum circuit breaker, which provides an arc extinguishing effect for the opening of the moving and static contacts through the arc extinguishing assembly arranged between the moving contact and the static contact to solve the problem of vacuum in the prior art. The circuit breaker mainly relies on the vacuum interrupter to extinguish the arc, which causes the technical problems of slow arc extinguishing speed and easy damage to the contacts.

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