Copper strip welded embossing type internal shielding railway digital signal cable

Abstract

The invention relates to a copper strip welded embossing type internal shielding railway digital signal cable, which comprises a cable core and a protective layer coating the cable core, wherein the cable core comprises at least one shielding quad; the shielding quad comprises four stranded insulating single lines in different colors; each insulating single line comprises a copper conductor and an insulating layer coating the copper conductor; wrapping is wrapped around the insulating single lines; an inner non-moisture-absorbent insulating layer, a copper strip welded embossing shielding layer and an outer non-moisture-absorbent insulating layer are sequentially arranged outside the wrapping; and the protective layer comprises a PET strip lapped layer, an aluminum sheath, a polyethylene adhesive protective layer, a galvanized steel strip gap lapped armoured layer and an outer sheath sequentially from inside to outside.

Description

technical field [0001] The invention relates to a signal cable, in particular to a copper strip welding embossed internal shielding railway digital signal cable. Background technique [0002] There are two directions for the development of railway locomotives today. One is to use high-speed bullet trains for passenger transport, and the other is to use long-term marshalling for heavy-duty traction. High-speed trains and heavy-duty traction put forward higher requirements for safety and comfort. In the production process of existing inner shielded railway digital signal cables, shielding is mainly wrapped by wrapping or longitudinal wrapping. Using these two The internal shielded railway digital signal cable produced in this way often has quality problems such as copper tape leaks or cracks at the joints of the copper tape. Due to the discontinuity of the shield and the non-conductive gap formed at the junction of different parts of the shield, it will Electromagnetic leakag...

AI Technical Summary

Problems solved by technology

High-speed trains and heavy-duty traction put forward higher requirements for safety and comfort. In the production process of existing inner shielded railway digital signal cables, shielding is mainly wrapped by wrapping or longitudinal wrapping. Using these two The inner shielded railway digital signal cable produced in this way often has quality problems such as copper tape leakage or cracks at the joints of the copper tape. Due to the discontinuity of the shield and the non-conductive gap formed at the junction of different parts of the shield, it will Electromagnetic leakage is generated, which seriously affects the shielding performance of the cable and poses a major safety hazard to railway transportation

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