Corrosion-resistant type flame-retardant orbital digital signal cable

Abstract

The invention discloses a corrosion-resistant type flame-retardant orbital digital signal cable. An inner insulating layer is arranged on the outer surfaces of twisted single wires; a coating layer coats the outer surfaces of 2-20 wire groups; a first copper layer coats the outer surface of the inner insulating layer; a steel layer coats the outer surface of the first copper layer; a second copper layer coats the outer surface of the steel layer; the first copper layer is tightly connected with the inner surface of the steel layer through a first alloy layer; the second copper layer is tightly connected with the outer surface of the steel layer through a second alloy layer; an outer protective layer coats the outer surface of the second copper layer; the first alloy layer comprises copper, iron, molybdenum, chromium and carbon; the second alloy layer comprises copper, iron, molybdenum, chromium and carbon; and the thickness of a polyester tape is 0.03-0.06mm. According to the corrosion-resistant type flame-retardant orbital digital signal cable, the transmission attenuation of the cable is reduced; the formability, extensibility and good electrical conductivity of a product are improved; and the tensile strength is improved.

Description

technical field [0001] The invention relates to the field of rail transit signal cables, in particular to a corrosion-resistant flame-retardant rail digital signal cable. Background technique [0002] With the rapid development of railway transportation, traffic safety has become a concern of the whole society. The speed of railway traffic is getting faster and faster, traffic management is becoming more and more centralized, and data signal transmission methods are diversified. In order to ensure the normal operation of the system, ensure traffic safety, reduce the occurrence and severity of traffic accidents, and reduce the loss of personnel and property, high-performance, high-strength signal cables are required to match it, and the existing railway cables The cable sheath is generally composed of the following structural layers: the coating layer covering the outer layer of the cable core, and the general coating layer is a coating layer made of extruded plastic sleeves...

AI Technical Summary

Problems solved by technology

The characteristics of the sheath of the above-mentioned cables are that the structure is relatively complicated, the outer diameter of the cable is large, the cable is heavy, the manufacturing process is complicated, the manufacturing cost is high, the construction cost is also high, and the bending performance of the cable is relatively poor.

Due to the limited strength of the shielding copper tape or aluminum tape, it is easy to break during the cable manufacturing and use process, resulting in the discontinuity of the shielding body, resulting in potential safety hazards in system operation

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