Fireproof and damp-proof subway cable

A subway and fire-resistant technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of poor fire resistance and moisture resistance, and achieve the effects of high practicability, improved flame retardant performance, and good fire retardant performance.

Inactive Publication Date: 2020-09-11
云南龙源电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a fire-resistant and moisture-proof subway cable with reliable performance, which solves the problems of poor fire-proof and moisture-proof performance of existing subway cables, and has good strength and is not easy to be damaged

Method used

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  • Fireproof and damp-proof subway cable

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Experimental program
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Effect test

Embodiment 1

[0018] like figure 1 The shown fire-resistant and moisture-proof subway cable includes several cable cores 13, and the outside of the cable cores 13 is sequentially provided with an insulating layer 12, a shielding layer 11, a protective layer 10 and a fireproof layer 9, and the cable cores 13 are arranged in the fire-proof bracket 7. The fire-proof bracket 7 is fixed on the water-blocking layer 6, and the water-blocking layer 6 is covered with a moisture-proof layer 5, a flame-retardant layer 3, an elastic isolation layer 2 and a wear-resistant layer 1 in sequence, and the fire-proof bracket 7 separates each cable core 13 in a separate cavity. Several hollow flame-retardant tubes 4 extending along the length direction of the cable core 13 are arranged in the flame-retardant layer 3 , and the inner tubes of the flame-retardant tubes 4 are filled with flame retardant. Between the water blocking layer 6 and the fire-proof bracket 7 , the cavity between each cable core 13 and th...

Embodiment 2

[0027] like figure 1The shown fire-resistant and moisture-proof subway cable includes several cable cores 13, and the outside of the cable cores 13 is sequentially provided with an insulating layer 12, a shielding layer 11, a protective layer 10 and a fireproof layer 9, and the cable cores 13 are arranged in the fire-proof bracket 7. The fire-proof bracket 7 is fixed on the water-blocking layer 6, and the water-blocking layer 6 is covered with a moisture-proof layer 5, a flame-retardant layer 3, an elastic isolation layer 2 and a wear-resistant layer 1 in sequence, and the fire-proof bracket 7 separates each cable core 13 in a separate cavity. Several hollow flame-retardant tubes 4 extending along the length direction of the cable core 13 are arranged in the flame-retardant layer 3 , and the inner tubes of the flame-retardant tubes 4 are filled with flame retardant. Between the water blocking layer 6 and the fire-proof bracket 7 , the cavity between each cable core 13 and the...

Embodiment 3

[0029] like figure 1 The shown fire-resistant and moisture-proof subway cable includes several cable cores 13, and the outside of the cable cores 13 is sequentially provided with an insulating layer 12, a shielding layer 11, a protective layer 10 and a fireproof layer 9, and the cable cores 13 are arranged in the fire-proof bracket 7. The fire-proof bracket 7 is fixed on the water-blocking layer 6, and the water-blocking layer 6 is covered with a moisture-proof layer 5, a flame-retardant layer 3, an elastic isolation layer 2 and a wear-resistant layer 1 in sequence, and the fire-proof bracket 7 separates each cable core 13 in a separate cavity. Several hollow flame-retardant tubes 4 extending along the length direction of the cable core 13 are arranged in the flame-retardant layer 3 , and the inner tubes of the flame-retardant tubes 4 are filled with flame retardant. Between the water blocking layer 6 and the fire-proof bracket 7 , the cavity between each cable core 13 and th...

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Abstract

The invention relates to the technical field of wires and cables, in particular to a fireproof and damp-proof subway cable. The fireproof and damp-proof subway cable comprises a plurality of cable cores. An insulating layer, a shielding layer, a protective layer and a fireproof layer are sequentially arranged on the outer side of each cable core, the cable core is arranged in a fire insulation bracket, the fire insulation bracket is fixed on a water blocking layer, a damp-proof layer, a flame-retardant layer, an elastic isolation layer and a wear-resistant layer are sequentially coated outsidethe water blocking layer, and the fire insulation bracket divides all cable cores into independent cavities respectively. In order to overcome defects, the invention provides the fireproof and damp-proof subway cable with reliable performance, problems of poor fireproof and damp-proof performance of the existing subway cable are solved, and the cable is good in strength and not easy to damage.

Description

technical field [0001] The patent of the present invention relates to the technical field of wires and cables, in particular to a fire-resistant and moisture-proof subway cable. Background technique [0002] Cable is a general term for items such as optical cables and cables. Cables are used for many purposes, mainly for controlling installations, connecting equipment, transmitting power, etc. The cables used in the subway are located below the ground, and the light-transmitting and air-permeable environment of the underground is poorer than that of the surface, so the underground is dark and humid. Most of the existing cables have poor fire resistance and are prone to fire; the moisture-proof effect is poor, and it is easy to cause cable corrosion. Aging; and the compression resistance is not strong, the signal transmission is easily affected by moisture during use, and the local strength of the cable surface is weakened or even damaged after long-term use. The cable damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B7/22H01B7/28H01B7/282H01B7/29H01B7/295H01B7/42
CPCH01B7/18H01B7/228H01B7/2806H01B7/282H01B7/29H01B7/295H01B7/421H01B7/428
Inventor 梅宇航蔺泉
Owner 云南龙源电缆有限公司
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