Anti-explosion device and method for top of switch cabinet

Abstract

The invention discloses an anti-explosion device and method for top of a switch cabinet including a cabinet and a partition plate, An explosion-proof membrane is arranged on that partition plate for releasing the expand gas in the lower space of the partition plate, the partition plate is connected with the top of the inner wall of the cabinet body through a cushioning assembly, the cushioning assembly includes a baffle, a First spring, an Electric push rod and a contact switch, when the expansion gas pressure in the lower space of the separator exceeds the set pressure value of the explosion-proof film, the expansion gas is discharged from the explosion-proof film and pushed against the baffle, the baffle plate is moved upward to compress the first spring and to close the contact switch at a set stroke, thereby controlling the electric push rod to contract its push rod to move the partition plate upward, and the expanded gas is discharged outwardly from the exhaust windows arranged onboth sides of the upper part of the cabinet body; The device can quickly release the expanding gas when it is generated in the switch cabinet, thus effectively avoiding the explosion damage of the switch cabinet.

Description

technical field [0001] The invention relates to an explosion-proof device and method at the top of a switch cabinet, belonging to the technical field of electrical equipment. Background technique [0002] Generally, there are busbar room, overvoltage device, relay instrument room, isolating switch, circuit breaker room, etc. in the switchgear. Since various components and electrical appliances are located in the switchgear, the operating space is small, and these electrical components generate a lot of heat when they are energized. It will cause the internal temperature of the switchgear to rise and the air pressure to increase, but the air pressure cannot be released in time, which will cause the switchgear to explode, bringing huge potential safety hazards and economic losses. [0003] The explosion-proof of the existing switchgear usually adopts a pressure relief valve or an explosion-proof membrane, and the pressure relief of the pressure relief valve and the explosion-p...

AI Technical Summary

Problems solved by technology

[0002] Generally, there are busbar room, overvoltage device, relay instrument room, isolating switch, circuit breaker room, etc. in the switchgear. Since various components and electrical appliances are located in the switchgear, the operating space is small, and these electrical components generate a lot of heat when they are energized. It will cause the internal temperature of the switchgear to rise and the air pressure to increase, but the air pressure cannot be released in time, which will cause the switchgear to explode, bringing huge safety hazards and economic losses

[0003] The explosion-proof of the existing switchgear usually adopts a pressure relief valve or an explosion-proof membrane, and the pressure relief of the pressure relief valve and the explosion-proof membrane is a uniform and slow process. When the gas in the cabinet expands rapidly and the air pressure is large, it cannot be quickly released pressure, it will still explode, and the existing explosion-proof membrane is not easy to replace after damage

Images