Self-radiating self-bearing anti-pressure coaxial fireproof cable

Abstract

The invention discloses a self-radiating self-bearing anti-pressure coaxial fireproof cable comprising an inner conductor, an insulation layer, an outer conductor, a buffer layer and an outer sheath arranged inside-out; the inner conductor comprises a bearing core arranged in the center and a plurality of inner conductor conductive single wires twisted with the bearing core and surrounding the bearing core; the outer conductor is formed by parallelly winding a plurality of outer conductor conductive single wires; a metal anti-pressure pipe is arranged between the buffer layer and the outer sheath; the outer sheath is also provided with single wire protruding ridges, wherein the height of the ridge is not smaller than 0.1mm, and the width is not smaller than 5mm; the outer sheath is in a tooth form; a fireproof coating is coated in the tooth form so as to form a plurality of fireproof layers arranged at equal intervals; a plurality of protruding grooves extrude outside the outer sheath,and filled with a heat absorption cotton, thus sucking and diffusing the heat energy from the cable, and preventing the hidden troubles caused by cable self-combustion.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a self-radiating, self-supporting, compression-resistant coaxial fireproof cable. Background technique [0002] Today's world has entered the information age, and information has become a strategic resource for economic development and a unique factor of production. A modern information transmission system and a complete information service system established by combining long-distance communication networks, computers, video and other multimedia terminals, It has become an important symbol of the economic development of a country or region. Coaxial cable is an important variety in information transmission. It is mainly used as an antenna feeder for radio transmitting or receiving equipment and as an internal connection or interconnection line for various communications and electronic equipment. The coaxial cable is composed of inner conductor layer, insulating layer, outer condu...

AI Technical Summary

Problems solved by technology

The coaxial cable is composed of inner conductor layer, insulating layer, outer conductor layer and sheath layer. The inner conductor layer and outer conductor layer are usually small in section and have poor self-supporting performance, especially when the cable is used under the working condition of not being buried in the ground. , due to poor load-bearing performance, the weight of the cable itself will cause the cable conductor to break, and it is also easy to damage the small cable conductor during construction

In the prior art, the support frame is used to support the cable, and the coaxial cable is protected by adding a support frame, which has a certain effect, but increases the laying cost and time, and the cable itself has poor load-bearing performance, and it is inevitable during the construction process. The problem of damage to the core of the cable caused by careless operation

[0003] Chinese patent "ZL201520373236.X" discloses a coaxial cable, the main content of which is to add a strengthening layer outside the outer conductor, which improves the overall tensile performance of the cable to a certain extent. In this working condition, the stress concentration point of the cable is at the center point of the cable, the center point is not protected, and the tensile performance of the inner conductor has not been solved; due to the addition of one or more layers of structure in the cable, The processing procedure is increased, the production efficiency is reduced, and the weight of the cable is increased. On the one hand, it affects the installation, and on the other hand, it increases the pressure of the inner conductor during the load-bearing process; and the cable has poor compression resistance, moisture resistance and poor sealing performance. less bendable

[0004] In addition, the existing cables have extremely poor fire performance, poor internal heat dissipation, and are prone to spontaneous combustion

Images