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Pressure relief device for outdoor sealed electrical box body

A pressure relief device, sealed technology, applied in the substation/distribution device shell, substation/switchgear cooling/ventilation, switchgear and other directions, to ensure the pressure relief capability, ensure the effect of waterproof performance

Pending Publication Date: 2021-05-25
SHANGHAI CHINT POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of how to overcome the defects of the existing rapid pressure relief device for electrical boxes, so that the pressure relief device can meet the protection requirements of IP65 level and be reusable

Method used

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  • Pressure relief device for outdoor sealed electrical box body
  • Pressure relief device for outdoor sealed electrical box body
  • Pressure relief device for outdoor sealed electrical box body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] like Figure 5 Shown; A pressure relief device 4 of the present invention is installed on the bottom frame of the 125KW all-in-one machine. The pressure relief device 4 is installed in the closed space of the bottom frame. In order to complete the assembly of the pressure relief device 4, there are holes on the side of the base.

[0032] This model has passed UV test, high and low temperature cycle test, transportation and handling test, drop test, waterproof test, and vibration test. The pressure relief device 4 is waterproof and the rubber cover 10 is not loose. When the box body is inflated to 0.3MPa, the rubber cover 10 of the pressure relief device 4 will pop open to complete the pressure relief action.

[0033] According to different box body sizes and pressure relief requirements, several pressure relief devices 4 can be used together.

[0034] The present invention can generate enough pretightening force through the waterproof structure of the rubber cover sea...

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PUM

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Abstract

The invention relates to a pressure relief device for an outdoor sealed electrical box body, and belongs to the technical field of outdoor electrical equipment. A pressure relief opening is formed in the electrical box body, and a pressure relief device is arranged at the pressure relief opening; the pressure relief device comprises a rubber cover with a waterproof ring, a cable gland and a mounting nut; a gland is arranged on the pressure relief opening, and the part, arranged on the inner side of the box body, of the gland is connected with the mounting nut; the part, arranged on the outer side of the box body, of the cable gland is connected with a rubber cover with a waterproof ring. Through the structural design of the waterproof structure, the anti-falling structure and the integrally-formed structure, the defects of an existing rapid pressure relief device for the electrical box body are overcome, and the pressure relief device can meet the IP65-level protection requirement and can be repeatedly used.

Description

technical field [0001] The invention relates to a pressure relief device for an outdoor sealed electrical box, belonging to the technical field of outdoor electrical equipment. Background technique [0002] When an accident occurs inside the existing outdoor sealed electrical box, photovoltaic inverter and other electrical products, resulting in short circuit, thermal runaway and other events, the gas inside the housing is heated to a very high temperature and the pressure rises sharply. Usually, the sealed box will be equipped with a breather valve, which can effectively balance the internal and external pressure difference when the pressure changes gently. However, when the internal pressure rises sharply, the vent valve cannot relieve the pressure in time, which will cause the shell to bulge and deform. In severe cases, the screws of the locking structural parts will break and fly out, which will easily damage other surrounding equipment and even endanger personal safety....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/28H02B1/56H02B1/46H02B1/48H02B13/025
CPCH02B1/28H02B1/46H02B1/48H02B1/565H02B13/025
Inventor 韩江瑞李金强
Owner SHANGHAI CHINT POWER SYST
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