Coal mine power supply control device capable of being stopped when not used

Abstract

The invention relates to a coal mine power supply control device capable of being stopped when not used. The coal mine power supply control device comprises a load controller which is arranged in a load anti-explosion vacuum magnetic starter and a power supply controller which is arranged in an anti-explosion power supply vacuum switch. The load controller comprises a starting button and a stopping button, wherein the starting button is in parallel connection and in mechanically follow-up with a starting switch of the load anti-explosion vacuum magnetic starter, and the stopping button is in serial connection and in mechanically follow-up with a stopping switch of the load anti-explosion vacuum magnetic starter. When the starting button is pressed down, the load controller can send out a first signal. When the stopping button is pressed down, the load controller can send out a second signal. The load controller is in communicated connection with the power supply controller. When the power supply controller receives the first signal, the anti-explosion power supply vacuum switch is controlled to be closed. When the power supply controller receivers the second signal, the anti-explosion power supply vacuum switch is controlled to trip. The coal mine power supply control device can effectively improve power supply safety and reduce electric leakage accidents.

Description

technical field [0001] The invention relates to the field of control, in particular to a coal mine non-use or power-off control device. Background technique [0002] With the expansion of the current scale of coal mine production, the utilization rate of coal mine mechanization has been very extensive, which has greatly improved the production efficiency of coal mines, but the power consumption of coal mines and the use density of electrical equipment have also greatly increased. And equipment congestion, resulting in coal mine lines and equipment leakage, human body electric shock, gas explosions caused by electric sparks and other accidents have increased a lot more than before. [0003] At present, leakage protection devices for lines and equipment are used in coal mines, which is a passive protection method and cannot prevent gas explosions caused by leakage. The lines and equipment of the underground power supply system are out of service for more than 1 / 3 of the time ...

AI Technical Summary

Problems solved by technology

Since there are many factors affecting the operation of the leakage protection device, it cannot effectively prevent electric shock when the equipment leaks, and misoperations often occur in strong interference environments and when the grounding resistance changes.

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