Three-region split visible fireproof cable trench

Abstract

The invention discloses a three-region split visible fireproof cable trench, and relates to the technical field of electric power facilities. The cable trench specifically comprises the cable trench and an upper cover plate arranged at an opening in an upper end of the cable trench, wherein a fireproof partition wall is arranged on a bottom surface of the cable trench, visible cover plates are arranged between the fireproof partition wall and left and right side walls of the cable trench, and the fireproof partition wall and the visible cover plates divide an internal space of the cable trenchinto an upper-layer cable trench, a left lower-layer cable trench and a right lower-layer cable trench. Cable supports used for supporting control cables are arranged in the upper-layer cable trench,and the cable supports used for supporting power cables are arranged in the left lower-layer cable trench and the right lower-layer cable trench respectively. According to the cable trench, the powercables and the control cables are clearly partitioned, a dual-configuration power cable is clearly partitioned, cutting and mounting of a field fireproof partition plate are omitted, and a requirement for fireproof partition can be met through the structure of the cable trench.

Description

technical field [0001] The invention relates to the technical field of electric power facilities, in particular to a three-area split visible fireproof cable trench. Background technique [0002] In actual on-site engineering, power cables and control cables should not be mixed, unevenly distributed, or piled up randomly. Between the power cables and control cables, interlayer fire-resistant partitions should be installed. This is because the power cable passes through a large current and generates a large amount of heat. If it is mixed with the control cable, it will cause the power cable to catch fire and the control cable will be ignited, which will cause the control system of the entire substation to lose power and control signals, causing the accident to expand. And because the cables are mixed, it is not conducive to the investigation of the cause of the accident. [0003] At present, most of the cable trenches used in domestic substations are single-channel cable tre...

AI Technical Summary

Problems solved by technology

For cable trenches with high fire performance requirements, it is difficult to achieve the target fire performance after on-site installation

[0004] In addition, in actual on-site engineering, for some important power circuits, dual configuration of power cables is required, and the cable trench laid in mixed trenches cannot clearly divide the dual cables, and cannot protect the same channel under the condition of a certain external fire. Duplex configured cables run live

In addition, the cable trench cover is usually made of cement prefabricated board structure, which is heavy, and it is not convenient for operation and maintenance personnel to lift the cover, and the frequency of operation and maintenance observation is low

[0005] Finally, the fire barrier in the traditional cable trench is not convenient for installation and inspection

This is because the fireproof board is a non-transparent body, and the condition of the internal cables cannot be directly observed from the outside; in addition, the fireproof board is mostly made of asbestos material, and the nature of the material itself determines that it cannot be disassembled multiple times, otherwise the installation hole will be damaged. Damaged, so when expanding, the original fire barrier needs to be dismantled and repurchased, and the reuse rate is low

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