Railway through ground wire as well as preparation device and preparation method thereof

Abstract

The invention relates to a railway through ground wire. The ground wire comprises a cable core and a copper alloy protective sleeve which covers the outer layer of the cable core and is 0.9-10mm thick. The invention additionally provides a preparation device of a railway through ground wire and a corresponding preparation method, the copper alloy protective sleeve is formed by pouring a copper alloy solution to an outer layer of the cable core to crystallize and condense, the thickness of the copper alloy protective sleeve can be realized by changing the pipe diameter of a lower guide channel of a crystallizer, and the copper alloy molten solution in the lower guide channel can be controlled to grow from inside to outside the surface of the cable core by a heating induction coil and circulating cooling water channel, so as to obtain the railway through ground wire which has reliable connection on a separating place between the protective sleeve and the cable core and uniform metallographic structures of the protective sleeve.

Description

technical field [0001] The invention relates to a penetrating ground wire used on trunk railways and high-speed railway rails, as well as a preparation device and a preparation process for the railway penetrating ground wire. Background technique [0002] On the left and right sides of the main line railway and high-speed railway track in my country, there is a railway through-ground wire laid along the entire length of the railway, and the left and right two through-ground wires are connected horizontally at intervals, thus forming a comprehensive railway grounding system. Railway comprehensive grounding is to connect the traction power supply and return system, electric power supply system, signal system, communication and other electronic information systems, buildings, ballast beds, platforms, bridges, tunnels, sound barriers and other devices that need to be grounded along the railway through through ground wires. integrated grounding system. At the same time, the pene...

AI Technical Summary

Problems solved by technology

However, in the technical field of ground wires, for ground wire products with a narrow range of melting point difference between the cable core and the sheath alloy, the cable core is very easy to directly dissolve into the sheath alloy melt, and it is difficult to realize the interface between the cable core and the sheath. Diffusion eutectic ultra-long ground wires are produced. At the same time, the materials of the ground cable cores are different, and most of the cable cores are pre-prepared. The cable core is heated to a high temperature to make it co-crystallize with the sheath melt, which may affect the The performance of the cable core is affected; in addition, the heating of the cable core will also cause a certain amount of energy consumption, and the subsequent drawing is also a complicated process, which is difficult to control the thickness of the cable core and the uniformity in the length direction of

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