Fire-resistant and anti-interference railway digital signal cable

Abstract

The invention discloses a fire-resistant and anti-interference railway digital signal cable. The cable comprises a plurality of core wires, a single-sided aluminum-plastic composite tape, a polyethylene inner skin layer, a conductor layer and a mica tape, an inner conductor layer and a conductor layer coated outside the conductor layer. The insulating layer is further provided with at least one nylon wire which can enhance tensile resistance. The sheath is extruded with a luminescent layer doped with rare earth borate luminescence luminescent powder. The luminescent layer can store light energy in the presence of visible light, ultraviolet light and other light sources, and then slowly release the stored light energy to produce fluorescence in a dark state, so as to achieve the purpose of luminescence under dark environmental conditions and facilitate the maintenance of cables And maintenance, and the nylon wire is located in the center of the conductor layer, which can effectively solve the problems of wire core breakage and poor overall tensile performance, prolong the service life of the wire, moisture-proof and anti-corrosion, good shielding effect, tensile resistance Good flexibility, flame retardant, low smoke and environmental protection.

Description

technical field [0001] The invention relates to the field of electric wires and cables, in particular to fire-resistant and anti-interference railway digital signal cables. Background technique [0002] Current electric wires generally include an inner conductor layer and an insulating layer covering the conductor layer. In construction sites, wires need to be moved frequently during use, so there are high requirements for tensile performance. When the overhaul or maintenance project is carried out in places with weak light such as basements, sealed warehouses, elevator shafts, mine tunnels or fire lines, the poor visibility of ordinary wires and cables not only affects the efficiency of the project, but also affects the safety of the project. quality. Therefore, it is an urgent problem to be solved in related fields to design a wire and cable that has tensile properties and can emit light in places with weak light. Contents of the invention [0003] The purpose of the ...

AI Technical Summary

Problems solved by technology

[0004] The invention is simple in design, and the nylon wire is located in the center of the conductor layer, which can effectively solve the problems of wire core breakage and poor overall tensile performance of the wire, prolong the service life of the wire, and is moisture-proof and anti-corrosion. Good tensile bending resistance, flame retardant, low smoke and environmental protection