Fireproof railway digital signal cable and manufacturing method thereof

Abstract

The invention relates to the technical field of cables, in particular to a fireproof railway digital signal cable and a manufacturing method thereof. The fireproof railway digital signal cable comprises a twisted body and a pair of signal lines, wherein the twisted body comprises an insulation line core and a diversion line, the diversion line is twisted on the insulation line core, the insulationline core comprises an inner conductor and an inner insulation layer, the inner insulation layer wraps an outer side of the inner conductor, a shielding layer wraps a surface of the twisted body, anouter insulation layer wraps an outer side of the shielding layer, the pair of signal lines are two outer insulation layers pasted together, a tensile layer is inserted between the pair of signal lines in a penetrating way, an internal fireproof layer wraps outer sides of the pair of signal lines, an oxygen isolation layer is pressed at an outer side of the internal fireproof layer, and an external fireproof layer is pressed on a surface of the oxygen isolation layer. The fireproof railway digital signal cable has the characteristics of small transmission attenuation value in a high- and low-temperature environment, high transmission rate, stable and reliable transmission performance and the like, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a fireproof railway digital signal cable and a manufacturing method thereof. Background technique [0002] In recent years, with the rapid development of China's railways, the national railway operating mileage has reached 120,000 kilometers, ranking first in the world. At present, the national economy as a whole is facing downward pressure. Increasing investment in railways has a considerable positive effect on stimulating national economic growth. [0003] By increasing the intensity of railway construction, on the one hand, it can directly drive the development of industries such as steel, cement, and building materials that are closely related to railway construction, and promote employment; It also has positive significance for economic development and attracting investment. It is understood that China's railway development is extremely uneven, the railway network in the cen...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of large transmission loss, high production cost and poor fireproof performance of digital signal cables in the prior art, and propose a fireproof railway digital signal cable and its manufacturing method

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