Damp-proof device for anti-explosion frequency transformer

Abstract

The invention provides a damp-proof device for an anti-explosion frequency transformer and belongs to the technical field of power transformation or power distribution. The damp-proof device for an anti-explosion frequency transformer is used for solving the problem of electric leakage of an underground anti-explosion frequency transformer of a coal mine. According to the technical scheme, the damp-proof device for the anti-explosion frequency transformer comprises a temperature signal collection circuit, a humidity signal collection circuit, a single-chip microcomputer, a power contactor and a dehumidification circuit. The signal output end of the temperature signal collection circuit and the signal output end of the humidity signal collection circuit are connected with different input ports of the single-chip microcomputer respectively. The two control signal output ports of the single-chip microcomputer are connected with a control coil of the power contactor and the control signal input end of the dehumidification circuit respectively through a Darlington transistor array. A normally-open contact of the power contactor is connected with a power supply loop of the anti-explosion frequency transformer in series. The damp-proof device for the anti-explosion frequency transformer can effectively avoid electric leakage, caused by dampness, of the underground anti-explosion frequency transformer of the coal mine, avoid various security accents caused by electric leakage, prolong the service life of the anti-explosion frequency transformer and guarantee normal operation of coalmine production.

Description

technical field [0001] The invention relates to a moisture removal device used inside an explosion-proof frequency converter in a coal mine, and belongs to the technical field of power transformation or power distribution. Background technique [0002] At present, explosion-proof frequency converters are used more and more underground in coal mines. Due to the high humidity in the operating environment, after the underground explosion-proof frequency converter is stopped for a period of time, the insulation level of its internal components will drop significantly, resulting in leakage when it is restarted. If the phenomenon is serious, it may cause the explosion-proof frequency converter to explode, causing a major safety accident and bringing irreparable economic losses to the enterprise. Therefore, how to effectively prevent the leakage of the underground explosion-proof frequency converter in coal mines and ensure the normal operation of coal mine production has become a ...

AI Technical Summary

Problems solved by technology

[0002] At present, explosion-proof frequency converters are used more and more underground in coal mines. Due to the high humidity in the operating environment, after the underground explosion-proof frequency converter is stopped for a period of time, the insulation level of its internal components will drop significantly, resulting in leakage when it is restarted. In severe cases, it may cause the explosion-proof frequency converter to explode, causing major safety accidents, and bringing irreparable economic losses to the enterprise.

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