Railway through ground wire and preparation process thereof

Abstract

The invention relates to a railway through ground wire. The railway through ground wire comprises copper stranded wires (1); the exterior of the copper stranded wires (1) is coated with an outer sheath layer (2) which is made of a rare earth copper alloy material. The outer sheath of the through ground wire is made of rare earth copper alloy, and therefore, defects of zinc-containing brass can be eliminated, and the outer sheath has strong waterproof, anti-corrosion and anti-stress performances, so the quality and the service life of the railway through ground wire can be ensured; the outer sheath has strong tensile strength and high elongation at break and low resistance, and is not easily influenced by stress, and therefore, usage requirements of the railway through ground wire can be better satisfied; the contents of mercury, lead, cadmium and chromium in the outer sheath are lower, and therefore, after being used for a long term, the outer sheath of the railway through ground wire will not pollute environment; and the copper stranded wires are sheathed in the outer sheath which is a seamless pipe, and therefore, problems of cracks appearing on existing outer sheaths and affected conductivity of the copper stranded wires caused by welding-caused high temperature can be solved.

Description

Technical field [0001] The invention relates to a railway penetrating ground wire used in trunk railways and high-speed railways, and a preparation process of the railway penetrating ground wire. Background technique [0002] In my country's main railway and high-speed railways, on the left and right sides of the track, a railway penetrating ground line is laid along the entire length of the line, and the left and right penetrating ground lines are connected horizontally every 50 meters to form a comprehensive railway grounding system. The integrated grounding system makes the grounding potential consistent over a wide range of railway line lengths, various electrical equipment that needs to be grounded beside the railway track, line metal objects related to personal and equipment safety, railway lightning protection system lightning current leakage, and locomotive part traction current The confluence to the substation, etc., are connected to the through ground wire of the in...

AI Technical Summary

Problems solved by technology

Due to the difficulty of controlling the height of the inner welding seam of the welded metal sheath pipe, on the one hand, the sheath pipe is not welded through, and the induced current on the surface of the sheath pipe is easy to occur; When the cable core is used, it is easy to produce defects such as breakage of the cable core, and these factors seriously affect its conductivity.

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