Physically foamed insulation data signal line structure

Abstract

The invention provides a physically foamed insulation data signal line structure, which comprises a cable core and an insulated wrapping tape layer, a conductive shielding thermal insulation layer, aninner sheath, a double-steel-belt armor layer and an outer sheath, which are arranged outside the cable core. The cable core is formed by stranding a plurality of insulated single wires, wherein eachinsulated single wire is formed by a copper conductor and a skin-foam-skin physically foamed polyolefin insulation structure outside the copper conductor. The conductive shielding thermal insulationlayer is internally embedded with discharge copper wires. Cotton and hemp ropes are filled between the insulated single wires and the insulated wrapping tape layer and between the insulated single wires. The signal line structure is reasonable in design; the filled cotton and hemp ropes can improve tensile and anti-pressure performance of the signal line, so that the signal line is not vulnerableto external shock damage; the skin-foam-skin physically foamed polyolefin insulation structure has a good moisture-proof function and excellent insulation performance, thereby reducing transmission attenuation of the cable and effectively improving transmission performance of the cable; and besides, the conductive shielding thermal insulation layer improves shielding and thermal insulation performance of the signal line, and thus anti-signal interference ability is high.

Description

technical field [0001] The invention belongs to the technical field of signal cables, and in particular relates to a physical foam insulation data signal line structure. Background technique [0002] The outer sheath of the signal line is mostly flame-retardant outer sheath. The traditional flame-retardant outer sheath contains halogen. Once a fire occurs, the hydrogen halide gas released when the signal line burns will suffocate people, and people have almost no chance of escape. In addition, due to the stress generated by the signal line during laying or bending installation, it will break, resulting in damage to the signal line and affecting signal transmission; therefore, the signal line is required to be as soft as possible. In some special occasions, the signal line may be immersed in water for a long time during operation. Therefore, the signal line must have excellent water resistance and waterproof performance. At the same time, the signal wire has a larger transmi...

AI Technical Summary

Problems solved by technology

At present, the traditional signal line sheath has poor anti-aging performance and anti-ultraviolet performance, which will reduce the transmission performance of the signal line, and it is time-consuming and laborious to fix the signal line in special occasions, and the work efficiency is low, especially the anti-signal interference ability, and the signal transmission is unstable.

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