Permanent magnetic vacuum unidirectional switch and circuit breaker and contactor combined switch

Abstract

The invention relates to a permanent magnetic vacuum unidirectional switch and a circuit breaker and contactor combined switch. The permanent magnetic vacuum unidirectional switch comprises a shell, a vacuum circuit breaker and a permanent magnetic driving mechanism, wherein the vacuum circuit breaker comprises a static contact and a moving contact; the permanent magnetic driving mechanism is used for driving the moving contact and the static contact to be closed and comprises an insulator; and a reaction spring for driving the moving contact to move is sleeved on the moving contact, the moving contact is movably matched to the insulator, and the permanent magnetic driving mechanism drives the moving contact and the static contact to be closed through the insulator. The moving contact and the insulator are movably matched and not directly connected, and therefore automatic centering can be realized in closing, and the problems of wearing, uneven contact surface and the like can be avoided. The combined switch is used for carrying out combined control on the closing and opening of a plurality of permanent magnetic vacuum unidirectional switches through a controller, so that the combined switch has the functions of a circuit breaker, the functions of a contactor and the functions of both the circuit breaker and the contactor. The power utilization needs on unused equipment are satisfied, and the adaptability is more comprehensive.

Description

technical field [0001] The invention relates to a one-way switch driven by a permanent magnet mechanism, in particular to a permanent magnet vacuum one-way switch. [0002] In addition, the invention also relates to a circuit breaker contactor combined switch installed with the permanent magnet vacuum one-way switch. Background technique [0003] In the prior art, a contactor is used for an explosion-proof switch starter in a coal mine, and a circuit breaker is used for a feed switch. When the contactor and circuit breaker operate, they are divided into magnetic force and permanent magnet drive. It is composed of a magnetic driving mechanism driving a switch connecting rod or a connecting pull actuator. The starter feed switch is two switches with different purposes. [0004] The Chinese Invention Patent Authorization Announcement No. CN201256088Y, named "a circuit breaker", discloses a circuit breaker, including a switch tube, an insulator connected to the switch tube, a...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems in the above-mentioned prior art solutions, the present invention provides a permanent magnet vacuum one-way switch, which directly designs the movable contact end of the insulator and the vacuum tube as a movable cooperation structure, and will not be closed due to the uneven contact surface of the vacuum tube. There are wear and tear problems, and the situation that the moving contact and the static contact cannot be completely closed

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