Heat-resistant copper-cored aluminum stranded wire for power transmission line

Abstract

The invention discloses a heat-resistant copper-cored aluminum stranded wire for a power transmission line. The heat-resistant copper-cored aluminum stranded wire comprises conductors, and each conductor is composed of a circular copper core and an annular aluminum stranded wire layer wrapping the circular copper core. Asbestos filling layers are arranged on the outer surfaces of the conductors; atitanium alloy layer is arranged on the outer surface of the asbestos filling layer; the outer surface of the titanium alloy layer is provided with a flame-retardant silica gel layer, the outer surface of the flame-retardant silica gel layer is provided with a polyethylene waterproof layer, and the outer surface of the polyethylene waterproof layer is provided with an aluminum magnesium alloy protective layer. The wear resistance, tensile strength, water resistance, fire resistance, high temperature resistance and other properties of the copper-cored aluminum stranded wire are improved, and the service life of the copper-cored aluminum stranded wire is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of stranded wire equipment, in particular to a heat-resistant copper-cored aluminum stranded wire for power transmission lines. Background technique [0002] The stranded wire is realized by the rotation of the twisted single wire around the stranded wire shaft at an equal angular velocity and the uniform forward movement of the stranded wire. Commonly used are copper and aluminum. Copper and aluminum wires can be twisted into conductor batteries of various cross-sections and different types of wires and cables. It is suitable for occasions where the operating frequency is high and the skin effect and proximity effect loss of single-strand wire is too large. The use of stranded wire can reduce the operating temperature. Compared with the single-strand wire with the same cross-sectional area, the stranded wire has higher mechanical properties and flexibility. For the existing copper-cored aluminum stranded w...

AI Technical Summary

Problems solved by technology

The use of stranded wire can reduce the operating temperature. Compared with the single-strand wire with the same cross-sectional area, the stranded wire has higher mechanical properties and flexibility. For the existing copper-cored aluminum stranded wire, its heat resistance is poor. The tensile and compressive properties are low and cannot be well applied to transmission lines. Therefore, a heat-resistant copper-cored aluminum stranded wire for transmission lines needs to be proposed

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