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Underground tunnel cable protection device

A technology for protective devices and underground tunnels, which is applied in the direction of cable installation, cable installation devices, and cable installation in tunnels. It can solve problems such as electric leakage, ground subsidence, and damage to underground cables to improve safety and improve High efficiency and damage reduction effect

Inactive Publication Date: 2021-08-24
刘明军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the installation of underground tunnel cables and the underground environment, some flammable and explosive gases will be generated in the underground rock layer due to the decay of animals and plants and will accumulate in the rock layer. When the underground cable passes through the rock layer with flammable and explosive gas, Once the surface of the cable is damaged, it will cause flammable and explosive gas explosion, which will not only damage the underground cable, but also cause the ground to collapse, and when the underground cable passes through the water seepage area, once the cable skin is damaged, it will easily cause leakage, which will not meet the requirements. Urban electricity demand affects people's quality of life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to Figure 1-6 , an underground tunnel cable protection device, including a cable body 1 and a protective shell 31, a mounting block 2 is fixedly mounted on the cable body 1, a housing 3 is fixedly mounted on the mounting block 2, and a second An inner chamber 4, a first cavity 5 is provided on the housing 3, dry ice powder is placed in the first cavity 5, a second cavity 6 is provided on the housing 3, and a second cavity 6 is provided on the side wall of the second cavity 6 There is a through hole 7, the through hole 7 communicates with the first cavity 5, a filter screen 8 is fixedly installed in the through hole 7, a metal mesh 18 is wound on the surface of the cable body 1, and a heat conducting sheet 19 is fixedly installed on the metal mesh 18, The end of the heat conduction sheet 19 away from the metal mesh 18 is contacted with a heat conduction rod 20 , and the casing 3 is provided with a linkage mechanism for controlling the contact between the heat cond...

Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 is that a ring roller 16 is installed in the first inner cavity 4, and the number of the ring roller 16 is one, and a pressing block 37 is installed in the first inner cavity 4, and the pressing block 37 is fixedly installed. On the airbag 10, the annular roller 16 and the pressing block 37 are positioned at one side of the airbag 10, and the fixed block 11 is installed between the annular roller 16 and the pressing block 37, and the fixed block 11 is fixedly connected on the airbag 10, and the effect of the pressing block 37 is Press one end of the insulating film 17. When the surface of the cable is damaged, the ring roller 16 moves to one side under the push of the gas to completely attach the insulating film 17 to the surface of the cable to repair the surface of the cable. At the same time, the first inner The air in the cavity 4 is completely exhausted, so that the first inner cavity 4 only contains carbon dio...

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Abstract

The invention discloses an underground tunnel cable protection device, and relates to the technical field of cable protection equipment. The underground tunnel cable protection device comprises a cable body and a protection shell. The cable body is fixedly provided with a mounting block, the mounting block is fixedly provided with a shell, the shell is internally provided with a first inner cavity, and the shell is provided with a first cavity. A first cavity is formed in the cable body, dry ice powder is placed in the first cavity, a second cavity is formed in the shell, a through hole is formed in the side wall of the second cavity, the through hole is communicated with the first cavity, a filter screen is fixedly installed in the through hole, and a metal net is wound on the surface of the cable body. According to the invention, through the arrangement of the metal net, the heat conduction sheet, the heat conduction rod and the linkage mechanism, when the cable skin is damaged, heat generated by the damaged part can be rapidly absorbed by the dry ice powder in the first cavity through the heat conduction sheet and the heat conduction rod, rapid cooling can be carried out, and fire disasters caused by too high local temperature are avoided. And the use safety of the cable is improved.

Description

technical field [0001] The invention relates to the technical field of cable protection equipment, in particular to an underground tunnel cable protection device. Background technique [0002] Unlike elevated high-voltage lines, cables are often laid in cable trenches, tunnels, pipelines or indoors. After entering the modern society, due to the shortage of urban land, heavy traffic pressure, city appearance construction and other reasons, large cities generally adopt underground cable transmission. Compared with overhead lines, cables have the advantages of small footprint, reliable power transmission, and strong anti-interference ability. [0003] Due to the installation of underground tunnel cables and the underground environment, some flammable and explosive gases will be generated in the underground rock layer due to the decay of animals and plants and will accumulate in the rock layer. When the underground cable passes through the rock layer with flammable and explosiv...

Claims

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Application Information

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IPC IPC(8): H02G9/08H02G1/00H02G1/16A62C3/16H02G3/03
CPCA62C3/16H02G1/00H02G1/16H02G3/03H02G9/08
Inventor 刘明军
Owner 刘明军
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