A novel pressure relief device for high-voltage switch cabinet

Abstract

The invention discloses a novel pressure relief device for a high-voltage switch cabinet, comprising a box body with a cuboid structure, wherein the box body is provided with an open opening formed ona relatively large surface and a pressure relief cover plate separably covering the open opening; a fish scale explosion-proof plate is installed on the inner side of the pressure relief cover plate;and a plurality of filter screens are fixed side by side in the box body. The invention has the beneficial effects that the pressure relief cover plate of the pressure relief device adopts a metal hinge on one side and a nylon bolt on the other side; when the switch cabinet has an internal arc fault, the nylon bolt can be quickly punched out, the pressure relief overturning plate can be quickly opened, rapid pressure relief is realized, and the internal pressure of the cabinet body is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of power distribution control, and in particular relates to a novel pressure relief device for a high-voltage switch cabinet. Background technique [0002] With the development of China's electric power industry and the widespread application of high-voltage switchgear in power systems, the safety of equipment has been paid more and more attention, and ensuring personal safety is the top priority. During long-term use of switchgear due to the surrounding environment Various reasons such as changes in the performance of insulating parts, decline in the performance of insulating parts, and misuse will cause accidents in the switchgear. Among them, the most dangerous to people and equipment is the internal arc fault. When an internal arc fault occurs, it will generate strong power and high temperature. The arc will cause the temperature of the gas in the cabinet to rise sharply, and it will also cause the gasif...

AI Technical Summary

Problems solved by technology

[0002] With the development of China's electric power industry and the widespread application of high-voltage switchgear in power systems, the safety of equipment has been paid more and more attention, and ensuring personal safety is the top priority. During long-term use of switchgear due to the surrounding environment Various reasons such as changes in the performance of insulating parts, decline in the performance of insulating parts, and misuse will cause accidents in the switchgear. Among them, the most dangerous to people and equipment is the internal arc fault. When an internal arc fault occurs, it will generate strong power and high temperature. The arc will cause the temperature of the gas in the cabinet to rise sharply, and it will also cause the gasification of insulating materials and metal materials. These phenomena will cause the pressure in the compartment and the cabinet to rise suddenly in a short time. It will cause the switchgear to be unable to withstand the internal pressure and explode, causing damage to surrounding equipment and staff; for this reason, the Chinese standard puts forward clear requirements for the internal arc test of the switchgear, one of which requires the switchgear to verify the internal arc. There are fragments and individual components with a mass of 60g and above flying out. At present, although the switchgears on the market are equipped with pressure relief devices and there are many types, they can not only meet the rapid pressure relief when internal arcs occur, but also ensure that the fragments and individual Components with a mass of 60g and above will not fly out, and at the same time, it can meet the needs of heat dissipation. At present, there is no pressure relief device that can meet the above requirements.

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