Power distribution cabinet

Abstract

The invention discloses a power distribution cabinet which comprises a cylindrical cabinet and a positive pressure mechanism. The cylindrical cabinet comprises a cabinet body, a cabinet door capable of being clamped and fixed with the cabinet body, an elastic sealing strip arranged on the cabinet door and a plurality of transverse partition plates arranged in the cabinet body. The positive pressure mechanism comprises a positive pressure balancing weight and a positive pressure cylinder body, the positive pressure balancing weight comprises a balancing weight cone, a positive pressure inner piston in sliding seal fit with the positive pressure cylinder body is arranged in the positive pressure cylinder body, a positive pressure piston rod is arranged on the positive pressure inner piston,the positive pressure piston rod is connected with the positive pressure balancing weight, and a positive pressure spring is arranged in a positive pressure auxiliary cavity; a blowdown pipe is also included, and the positive pressure cylinder body is provided with an air suction pipe. The power distribution cabinet has the beneficial effects that a positive pressure protection function can be provided, corrosive gas in an external environment can be prevented from entering the power distribution cabinet, and the positive pressure protection function can effectively cover each area in the power distribution cabinet; the positive pressure protection function has the functions of automatic starting and pausing; the structure is reasonable, excessive work of the positive pressure mechanism can be avoided, and the working effect is good.

Description

technical field [0001] The invention belongs to the technical field of power distribution equipment and electric power equipment, and in particular relates to a power distribution cabinet. Background technique [0002] Power distribution cabinets are common power distribution equipment or power electrical equipment. When the power distribution cabinet is in use, many electrical components will be installed in it. Because the use environment of the power distribution cabinet is very diverse, one of them needs to be used in an indoor environment with a high concentration of corrosive gases. At this time, the power distribution cabinet Although the outer shell of the cabinet can be made of corrosion-resistant materials (or paint protection, etc.), the electrical components inside it should not be in contact with corrosive gases for a long time (in practice, since the power distribution cabinet is assembled by panels, and there are usually cabinets Doors, etc. need to use rubbe...

AI Technical Summary

Problems solved by technology

However, as time goes by, the gas in the distribution cabinet will leak slowly. When the air pressure inside the distribution cabinet is insufficient, the corrosive gas in the indoor environment will enter the distribution cabinet (the air pressure is not completely constant , after the internal air pressure of the distribution cabinet drops to close to the indoor ambient air pressure, as long as the air pressure rises due to an increase in temperature or gas volume in the indoor environment at a certain moment, the external air pressure of the distribution cabinet will be higher than the internal air pressure of the distribution cabinet. ), causing the electrical components inside the power distribution cabinet to be exposed to corrosive gases for a long time

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