Polyethylene insulating comprehensive sheath armored polyvinyl-chloride oversheath railway signal cable

Abstract

Polyethylene insulated comprehensive sheathed armored PVC outer sheathed railway signal cable belongs to the technical field of railway cables, consisting of five strands of four-wire group cores, two insulated single wires and one pair of cable cores, each The four-wire group cable cores are extruded from four wire cores, and the paired cable cores are extruded from two wire cores. The outer surface of each wire core is provided with an insulating ribbon. Each four-wire group The extruded outer surfaces of the cable core and paired cable cores are provided with insulating straps, and the outer surfaces of the five-strand four-wire cable core and paired cable cores are wrapped with cable core tapes, and two insulated single wires are set Between the four-wire group cable core and the paired cable core, the outer surface of the cable core tape is coated with a moisture-proof shielding layer, the outer surface of the moisture-proof shielding layer is covered with an inner lining, and the inner lining is equipped with an armored layer The outer surface of the coating layer is covered with an outer sheath layer. The invention has good insulation effect, shielding performance, flame retardancy and extrusion resistance, and can greatly prolong the service life of the cable.

Description

technical field [0001] The invention belongs to the technical field of railway cables, and relates to a railway signal cable, in particular to a polyethylene insulated comprehensive sheath armored PVC outer sheathed railway signal cable. Background technique [0002] Railway signal cable products also have various signal functions such as broadband network, IPTV, transmission telephone, fax, videophone, anti-theft alarm, etc. With the rapid development of intelligent buildings, computer industrialization and information highway projects, people are more and more With the demand and dependence on office informatization and home informatization, the demand for metal cables will increase day by day, which is the development direction of metal cables. [0003] Due to the expansion of the railway signal cable market capacity, the traditional railway signal cable market size is expected to maintain an annual consumption of about 30 million core kilometers. Some special cables suc...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing railway cables in the course of use, such as insulation effect, stability, extrusion resistance, poor shielding performance, and low adaptability to special occasions, a polyethylene insulated comprehensive sheathed armored polychloride cable is proposed. The railway signal cable with vinyl outer sheath can improve the insulation, shielding, flame retardant and extrusion resistance of the cable, can enhance the performance of the cable in harsh environments, and can greatly extend the service life of the cable

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