High-low voltage power distribution cabinet for cable fire protection

Abstract

The invention provides a high-low voltage power distribution cabinet which comprises a tunnel and a cable, and further comprises a vertical wall and a cabinet body, the vertical wall is fixedly arranged on the wall surface of the tunnel, a cavity is formed in the wall surface of the vertical wall, the end surface, facing the wall surface of the vertical wall, of the cavity is open, and the cabinetbody is fixedly installed in the cavity and used for containing high-low voltage power distribution elements. The cable penetrates through the side surface of the vertical wall and extends into the cabinet body to be communicated with the power distribution element; the vertical wall is attached to the wall surface of the tunnel, the cabinet body is arranged in the vertical wall, and the cabinetbody is sealed in the cavity through the isolation structure formed by the vertical wall and the cover plate, so that good fireproof, flame-retardant and heat-insulating effects are achieved, other fire-fighting equipment does not need to be additionally arranged, personnel maintenance is facilitated, and meanwhile, cable laying and tunnel passing cannot be hindered; and the tunnel wall surface cannot be damaged.

Description

technical field [0001] The invention relates to the technical field of tunnel fire protection, in particular to a high and low voltage power distribution cabinet for cable fire protection. Background technique [0002] Cable tunnel refers to a corridor or tunnel structure used to accommodate a large number of cables laid on cable supports, in which high and low voltage distribution cabinets will be installed at each cable transmission node. In order to meet the needs of tunnel fire prevention and fire protection, there are various equipment or facilities for fire separation between cable layers inside the tunnel, one of which is to design fire protection for power distribution cabinets. [0003] At present, there are various fire protection designs for power distribution cabinets. Some have modified the power distribution cabinet itself to make it have a fire extinguishing function, and some have set the power distribution cabinet as an underground cabinet to reduce the impa...

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Problems solved by technology

[0004] However, there are many problems in the above-mentioned designs. For example, when transforming the power distribution cabinet itself, due to the long and narrow tunnel and small space, it is difficult to meet the requirements of adding other fire-fighting devices or facilities, and the addition of some fire-fighting equipment may affect the tunnel. Unnecessary damage to the wall surface; the buried power distribution cabinet will hinder the passage of the tunnel after being raised, and the buried lifting mechanism is deeply buried and often fails due to fire, resulting in the failure of the power distribution cabinet to be raised for maintenance

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