A vacuum circuit breaker signal feedback mechanism

Abstract

The embodiment of the present invention discloses a signal feedback mechanism for a vacuum circuit breaker, which includes a vacuum chamber, one end of the vacuum chamber is provided with a fixed contact, and the other end of the vacuum chamber is provided with a The corresponding movable contact is connected with a conductive rod extending to the outside of the vacuum chamber, and a telescopic chamber is arranged on the conductive rod along the length direction of the conductive rod. The movable contact Installed in the telescopic chamber, a compression spring arranged along the axial direction of the movable contact is arranged in the telescopic chamber, and a piston rod is connected to the movable contact in the telescopic chamber, and the piston rod The other end of the conductive rod is arranged along the length of the conductive rod and extends through the conductive rod to the outside of the vacuum chamber. The conductive rod located outside the vacuum chamber is provided with a positioning assembly for the piston rod. By compressing The spring effectively improves the connection tightness between the moving contact and the fixed contact.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vacuum circuit breakers, and in particular to a signal feedback mechanism for vacuum circuit breakers. 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 o...

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Problems solved by technology

[0006] Therefore, the embodiment of the present invention provides a vacuum circuit breaker signal feedback mechanism, which pushes the moving contact toward the fixed contact through the compression spring arranged in the telescopic chamber of the conductive rod, and the moving contact first contacts the fixed contact and then continues Push the conductive rod to squeeze the moving contact toward the fixed contact through the compression spring, and then provide feedback information for the movement of the moving contact through the piston rod connected to the moving contact and the positioning component set on the conductive rod, so as to solve the existing The inaccurate feedback of the closing information of the dynamic and static contacts due to the combustion and wear of the dynamic and static contacts in the technology

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