A rail transit cable with long service life

Abstract

The invention discloses a rail transit cable with long service life, including grass roots, the inner wall of the base layer is fixedly connected with a shielding insulation layer, the inner wall of the shielding insulation layer is fixedly connected with a buffer layer, The inner wall of the buffer layer is fixedly connected with an anti-corrosion layer, the inner wall of the anti-corrosion layeris fixedly connected with a water barrier layer, the inner cavity of the water barrier layer is fixedly connected with a filling layer, the inner cavity of the filling layer is fixedly connected witha comprehensive refractory layer, and the inner wall of the comprehensive refractory layer is fixedly connected with a low-smoke non-halogen cladding layer. The invention solves the problem of shortservice life of the existing rail transit cable by arranging a base layer, a shielding insulation layer, a buffer layer, an anti-corrosion layer, a water barrier layer, a water barrier layer, a composite tape layer, a high-density polyethylene layer, a filling layer, a comprehensive refractory layer, an oxygen barrier layer, a cladding layer, a low-smoke non-halogen cladding layer, a cable body, an insulation wire core and a pressure-proof strip.

Description

technical field [0001] The invention relates to the technical field of cable bodies, in particular to a cable for rail transit with long service life. Background technique [0002] The cable body is made of one or more mutually insulated conductors and an outer insulating protective layer. It is a wire that transmits power or information from one place to another. It usually consists of several or several groups of wires, and each group is at least two A twisted cable body similar to a rope. Each group of wires is insulated from each other and is often twisted around a center. The entire outer surface is covered with a highly insulating covering layer. The cable body has the characteristics of internal energization and external insulation. . [0003] In recent years, the cables for subway rail transit have also been developed rapidly with the acceleration of national urban rail transit. Although the existing cable body can meet the requirements of electrical performance, it...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a long service life cable for rail transit, which has the advantage of long service life and solves the problem of short service life of existing rail transit cables

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