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Single-core fire-resistant cable

A cable and refractory technology, applied in the field of single-core refractory cables, can solve the problems of reduced refractory strength, cable heating, cable insulation decline, etc., to achieve the effects of improved refractory performance, good insulation performance, and simple structure

Inactive Publication Date: 2016-06-22
TIANJIN SINO SWISS BONLOK PIPE CONNECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unreasonable refractory materials and unreasonable structure of the existing medium-voltage fire-resistant cables, the ampacity of the cables is low and the cables generate heat
It is easy to reduce the insulation of the cable and reduce the fire resistance

Method used

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  • Single-core fire-resistant cable

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Experimental program
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Effect test

Embodiment 1

[0012] A single-core fire-resistant cable, including a cable inner core 7, a fire-resistant mica layer 6, a polytetrafluoroethylene layer 5, a cable tape 4, a cable lining 3, a cable armor 2, and a cable sheath 1 , the outer layer of the cable inner core 7 is coated with a fire-resistant mica layer 6, the outer layer of the fire-resistant mica layer 6 is coated with a polytetrafluoroethylene layer 5, the outer layer of the polytetrafluoroethylene layer 5 is coated with a cable tape 4, and the cable The outer layer of the tape 4 covers the cable inner liner 3 , the outer layer of the cable inner liner 3 covers the cable armor 2 , and the outer layer of the cable armor 2 covers the cable sheath 1 .

[0013] The cable inner core 7 is a copper core cable. The thickness of the refractory mica layer 6 is 5-10mm. The polytetrafluoroethylene layer 5 has a thickness of 3-8mm.

[0014] The fire-resistant mica layer 6 has a good fire-resistant and flame-retardant effect, and the polyte...

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Abstract

The invention relates to a single-core fire-resistant cable. The cable includes a cable core, a fire-resistant mica layer, a polytetrafluoroethylene layer, a cable wrapping belt, a cable lining, a cable armor and a cable sheath; the outer layer of the cable core coats the fire-resistant mica layer; the outer layer of the fire-resistant mica layer coats the polytetrafluoroethylene layer; the outer layer of the polytetrafluoroethylene layer coats the cable wrapping belt; the outer layer of the cable wrapping belt coats the cable lining; the outer layer of the cable lining coats the cable armor; and the outer layer of the able armor coats the cable sheath. The single-core fire-resistant cable of the invention is simple in structure. According to the single-core fire-resistant cable, the fire-resistant mica layer and the polytetrafluoroethylene layer are commonly used, so that the fire-resistant performance of the cable can be significantly increased, and the cable has excellent insulation performance under a high temperature environment and has high safety.

Description

technical field [0001] The invention belongs to the field of fireproof cables, in particular to a single-core fireproof cable. Background technique [0002] At present, the voltage level of fire-resistant power cable products is mostly concentrated at 1KV or below, while the medium and high-voltage power supply lines used in the fire protection systems of some super-large high-rise buildings, large-scale national key projects, substations, power plants, chemicals, subways, etc., If 0.6 / 1KV low-voltage power distribution is adopted as usual, the amount of cables and the workload of laying and installation will increase by tens of times compared with ordinary buildings, and the space for laying cables will increase by several times, which consumes both materials and energy. If the cables are laid too much or too large, it will also have an adverse effect on safe use. Therefore, medium and high voltage fire-resistant power cables must be used in occasions that require both med...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B7/295H01B9/00
Inventor 高迪·海尔纳
Owner TIANJIN SINO SWISS BONLOK PIPE CONNECTION TECH