Pressure relief enhanced switch cabinet

Abstract

The invention relates to a pressure relief enhanced switch cabinet, which comprises a cabinet body, a pressure relief plate and an anti-rebound device, a pressure relief opening is formed in the top of the cabinet body and is communicated with the interior of the cabinet body; the pressure relief plate is arranged at the top of the cabinet body and covers the pressure relief opening, one side edge of the pressure relief plate is connected with the top of the cabinet body through a rotating shaft, the top of the pressure relief plate is provided with a plurality of fixed cavities, the fixed cavities are upwards communicated with anti-falling holes, and the anti-falling holes are communicated with the top surface of the pressure relief plate; the anti-rebound device comprises a baffle, a plurality of fixing heads, a plurality of anti-falling blocks, a plurality of anti-falling channels and a plurality of trigger rods. According to the invention, the technical problem of how to improve the pressure relief effect of the switch cabinet is solved by arranging the anti-rebound device.

Description

technical field [0001] The invention relates to the field of pressure relief enhanced switch cabinets, in particular to a pressure relief enhanced switch cabinet. Background technique [0002] During the operation of the switchgear, due to various reasons, the primary circuit short-circuit fault occurs, such as short circuit, insulation aging, human error, etc. Under the short-circuit current of tens of thousands of amperes, high-temperature and high-pressure gas is instantaneously generated. If the cabinet cannot be effectively released in a very short time, it will cause the switch cabinet to burst, the adjacent switch cabinet will be damaged, and personal safety may be injured at the same time. Therefore, when the switchgear is designed, a pressure relief device must be installed. In order not to affect the adjacent switchgear, the pressure relief device is often arranged on the top of the switchgear. [0003] In the prior art, a freely rotatable pressure relief plate is...

AI Technical Summary

Problems solved by technology

However, when the switchgear fails, it often happens that the pressure relief plate rebounds immediately after opening and closes the pressure relief port, which affects the pressure relief effect.

Moreover, the high temperature of the switchgear may easily lead to serial short circuits. At this time, the switchgear will cause multiple pressure releases due to the rebounded pressure relief plate, causing greater damage to the inside of the switchgear.

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