Polyethylene insulated aluminum-sheath steel tape-armored polyvinyl chloride-outer sheath railway signal cable

Abstract

Polyethylene insulated aluminum sheathed steel tape armored PVC outer sheathed railway signal cable belongs to the technical field of railway cables. The outer surface of each core is provided with an insulating ribbon, the outer surface of each extruded cable core is provided with an insulating cable tie, the outer surface of the three cable cores is wrapped with a cable core tape, and the cable core tape The outer surface is wrapped with an inner lining layer, and the outer surface of the inner lining layer is provided with an armor layer, and the outer surface of the armor layer is covered with an outer sheath layer, which has a stable structure and is not easy to be squeezed and deformed, making the electrical performance of the cable more superior It ensures the stability and safety of railway transmission signals, and because it is a four-wire group extruded at the same time, it saves a process of twisting wires and reduces production costs; the key is that it also has good insulation effect, shielding performance and flame retardancy. , Can greatly extend 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 aluminum sheathed steel tape armored polyvinyl chloride outer sheathed railway signal cable. Background technique [0002] Railway signal cable products also have multiple 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 The demand and dependence on office informatization and home informatization, and 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 is expected to maintain an annual consumption of about 30 million core kilometers. Some special ca...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortages of existing railway cables such as poor insulation effect, stability, extrusion resistance, poor shielding performance, and low adaptability to special occasions during use, and proposes a polyethylene insulated aluminum sheathed steel tape armor PVC outer sheathed railway signal cable 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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