High-voltage switch device

Abstract

The invention discloses a high-voltage switch device, and relates to electrical equipment. the high-voltage switch device comprises an electrical element and a cabinet body; the cabinet body comprisesa cabinet door, wherein the cabinet door is in sealed contact with the cabinet body; an interlayer is arranged in the cabinet body; a cooling liquid is injected into the interlayer; a vacuum pump anda gas storage tank are arranged in the cabinet body; compressed nitrogen is stored in the gas storage tank; a flow pump is arranged on the gas storage tank; the flow pump is connected into the cabinet body; one end of the vacuum pump is arranged in the cabinet body, and the other end is arranged outside the cabinet body; the inner part of the cabinet body is sealed and then filled with nitrogen,and the internal pressure is greater than the external pressure; and a drying device is further arranged in the cabinet body. The high-voltage switch device is sealed and stored in a cabinet full of nitrogen, so that external dust and impurities are isolated, and the constant-temperature and constant-humidity in the cabinet body can be kept; and due to the fact that no oxygen exists, oxidation reaction is completely eradicated, the service life of the high-voltage switch is greatly prolonged, and the occurrence rate of faults is reduced. Moreover, when the high-voltage switch is exploded, theoccurrence of fire disasters can be reduced under the inhibition of nitrogen.

Description

technical field [0001] The invention relates to an electric device, especially a high-voltage switchgear. Background technique [0002] High-voltage switch equipment refers to electrical appliances with a rated voltage of 1kV and above, which are mainly used for breaking and closing conductive circuits. The general term for electrical and mechanical connections is an important control device for switching on and off circuits, cutting and isolating faults. The high-voltage switchgear may explode during use. There are two main reasons for the explosion. Most of the explosions are caused by external or internal short circuits, which cause instantaneous or long-term overvoltage and overcurrent, resulting in overloading of modules or capacitors, and explosions due to heat swelling; a few are due to The quality problem of the device itself or natural aging, power performance decline. Once the high-voltage switchgear explodes, it will affect other normal equipment, causing heavy ...

AI Technical Summary

Problems solved by technology

The high-voltage switchgear may explode during use. There are two main reasons for the explosion. Most of the explosions are caused by external or internal short circuits, which cause instantaneous or long-term overvoltage and overcurrent, resulting in overloading of modules or capacitors, and explosions due to heat swelling; a few are due to The quality of the device itself or natural aging, power performance decline

Once the high-voltage switchgear explodes, it will affect other normal equipment, causing heavy property losses, and sometimes causing heavy casualties

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