Steel core prestress processing system and prestress processing method of steel-cored aluminium strand

Abstract

The invention provides a steel core prestress processing system and prestress processing method of a steel-cored aluminium strand. A wire feeding tension device, a heating device and a wire outgoing tension device are sequentially arranged between a guide wire pay-off rack and a guide wire take-off rack, wherein the wire feeding tension device comprises a wire feeding tension wheel and a wire feeding driving part for driving the wire feeding tension wheel to be rotated; the wire outgoing tension device comprises a wire outgoing tension wheel and a wire outgoing driving part for driving the wire outgoing tension wheel to be rotated; rotation speed of the wire feeding tension wheel is smaller than that of the wire outgoing tension wheel; and a steel core which is coated with the steel-coredaluminium strand and is paid off from the guide wire pay-off rack is arranged on the wire feeding tension wheel in a winding manner, penetrates through the heating device, and is arranged on the wireoutgoing tension wheel in a winding manner. According to the steel core prestress processing system and prestress processing method of the steel-cored aluminium strand disclosed by the invention, theproblem that a conventional steel-cored aluminium strand is adopted, and the stress property of the steel-cored aluminium strand is changed due to produced deformation and creepage under a temperatureand stress effect so as to affect operation safety of the steel-cored aluminium strand is solved.

Description

technical field [0001] The invention relates to the technical field of overhead power transmission lines, in particular to a steel core prestressing treatment system and a prestressing treatment method for aluminum steel-cored stranded wires. Background technique [0002] Steel-cored aluminum stranded wire is one of the most widely used wires in overhead transmission lines, accounting for more than 80% of the entire wire type. As a composite structural part, the inner steel strand core mainly bears the force, while the outer aluminum wire mainly acts as a conductor to transmit electric energy. In operation, the performance of the wire depends on the steel core, aluminum wire and their structural matching characteristics. The steel core manufactured by the traditional method is stranded with the outer aluminum wire, and its performance is a combination of steel core and aluminum wire. For aluminum-steel-cored wires, the steel core is mainly used as a load-bearing part to pl...

AI Technical Summary

Problems solved by technology

[0003] In practical application, due to the temperature change of the steel-cored aluminum strand and the external loads such as wind, ice and snow, the steel-cored aluminum strand will produce a certain deformation, which will increase the arc sag of the steel-cored aluminum strand. And then bring great potential safety hazards to the line operation

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