Low-smoke halogen-free flame-retardant special cable for bullet train

Abstract

The invention discloses a low-smoke halogen-free flame-retardant special cable for a bullet train. A conductor is internally provided with a wire core, one side of the outer side of the wire core is wrapped with an insulating layer, a flame-retardant layer, a tensile layer, a compression-resistant layer and a shielding layer, and a high-temperature-resistant rubber extruded layer and a protrudingbody are arranged between the compression-resistant layer and the shielding layer. According to the invention, the composite layer of the insulating layer, the flame-retardant layer and the compression-resistant layer is adopted, the insulation and barrier properties are high, and supporting performance is good. The cable has high temperature resistance, wear resistance and pressure resistance arerealized. Meanwhile, low smoke and no halogen are realized, little smoke is generated and toxic and corrosive gases such as hydrogen chloride and the like are not generated during combustion. Servicelife is long, the tensile strength of the cable in the axial direction is enhanced through the tensile layer, meanwhile, the further insulating and flame-retardant effects are achieved, the high-temperature-resistant rubber extrusion layer can reduce the temperature of the cable and prolong the insulation damage event or prevent the insulation layer from being damaged in a fire disaster, the protruding body on the outer wall of the compression-resistant layer can enable the conductor not to be prone to relative displacement, and the structural reliability is high.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a low-smoke, halogen-free, flame-retardant special cable for motor vehicles. Background technique [0002] With the progress of society, the development of science and the improvement of people's awareness of environmental protection, the demand for radiation cross-linked low-smoke, halogen-free, flame-retardant and fire-resistant wires and cables will increase. At the same time, the research on new materials to replace copper conductors is also It will gradually deepen. In today's industrialized society, energy and information are the two pillars of society, and the transmission of both electric energy and information is inseparable from wires and cables, especially high-rise commercial buildings, subways, tunnels and nuclear power plants; [0003] In recent years, the technology of high-speed trains has been continuously developed, and the lines and shifts of high-spee...

AI Technical Summary

Problems solved by technology

[0003] In recent years, the technology of high-speed trains has been continuously developed, and the lines and shifts of high-speed trains have continued to increase. Due to the high requirements on the power system, cables are an indispensable element in the power system. Once the cables on the high-speed train catch fire, they will release a large amount of concentrated Smoke and halogen acid gas, rescuers need to wear gas masks to extinguish the fire, and at the same time bring a great threat to the life safety of the people on the train. Therefore, the present invention proposes a special low-smoke halogen-free flame-retardant cable for train Solve the problems existing in the existing technology

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