An operating mechanism of a vacuum circuit breaker

Abstract

The invention discloses an operating mechanism of a vacuum circuit breaker, which comprises an arc extinguishing chamber, a static contact is installed on one side of the arc extinguishing chamber, and a moving contact is arranged on the other side of the arc extinguishing chamber. An arc extinguishing baffle is arranged on the chamber close to the connection between the moving contact and the static contact, and the arc extinguishing chamber is provided with a ring groove around the circumference of the arc extinguishing baffle for the installation of the arc extinguishing baffle. The partition is connected with a push plate assembly through the arc extinguishing chamber along the annular groove; the moving contact includes a constriction part arranged at one end close to the static contact, and a wrapping part for wrapping the constriction part, and the push plate assembly pushes The arc extinguishing baffle moves to the joint close to the static contacts, and pushes the contraction part to shrink and move into the wrapping part through the arc extinguishing baffle, and drives the arc extinguishing baffle to the joint of the moving and static contacts through the push plate assembly Move, so that the dynamic and static contacts are separated by the force of the arc extinguishing component, and the dynamic and static contacts play the role of opening.

Description

technical field [0001] The invention relates to the technical field of vacuum circuit breakers, in particular to an operating mechanism of 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 mechanism, b...

AI Technical Summary

Problems solved by technology

[0005] However, due to the small opening distance of the contacts in the prior art, the operating work of the operating mechanism is small, and the stroke of the mechanical part is small. For this reason, the operating mechanism is prone to misoperation problems, and due to the arc effect generated between the moving and static contacts, it is easy to occur. The problem of suction of moving and static contacts, low safety performance

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