High-voltage switch cabinet

Abstract

The invention relates to a switch cabinet. The invention discloses a high-voltage switch cabinet. The switch cabinet comprises a pressure relief mechanism, the pressure relief mechanism comprises a pressure relief base fixed on the inner surface of the upper top plate; the pressure relief base comprises a cylindrical pressure relief base side wall with the upper end and the lower end open and a pressure relief mounting base located at the lower end of the pressure relief base side wall and located in the pressure relief base side wall. The pressure relief mounting base is connected with the inner surface of the pressure relief base side wall through a plurality of connecting rods evenly arranged around the axis of the pressure relief base side wall. A pressure relief plate is installed atthe upper end of the side wall of the pressure relief base, a pressure relief channel is formed in the middle of the pressure relief plate, a pressure relief plug is arranged in the pressure relief channel, an electromagnet capable of attracting the pressure relief plate is installed on the upper end face of the side wall of the pressure relief base, and a longitudinally-arranged compression spring is installed between the lower surface of the pressure relief plate and the pressure relief installation base. The pressure relief mechanism is arranged on the switch cabinet, pressure relief can beconducted on gas with different pressures, triggering is sensitive, and safety can be effectively guaranteed.

Description

technical field [0001] The invention relates to a switch cabinet, in particular to a high-voltage switch cabinet. Background technique [0002] A short-circuit fault in the switchgear may generate a short-circuit current of tens of thousands of amperes. The short-circuit current will generate high-temperature and high-pressure gas in an instant. If the faulty air flow cannot be effectively released in a short time, it will easily cause the switchgear to burst. Therefore Switchgear pressure relief is an item that must be considered in the design of switchgear. [0003] In the prior art, the pressure relief method of the switchgear needs to generate high-pressure gas in the switchgear and at the same time, the generated gas must reach a certain pressure to ensure that the pressure relief plate is opened for pressure relief. The pressure relief method requires many trigger conditions. Safety performance is difficult to be fully guaranteed. Contents of the invention [0004]...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the pressure relief method of the switchgear needs to generate high-pressure gas in the switchgear and at the same time, the generated gas must reach a certain pressure to ensure that the pressure relief plate is opened for pressure relief. The pressure relief method requires many trigger conditions. Safety performance is difficult to be fully guaranteed

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