Aluminum-clad invar steel core super-heat-resistant aluminum alloy type low wind pressure wire

Abstract

The invention relates to an aluminum-clad invar steel core super-heat-resistant aluminum alloy type low wind pressure wire. Reinforcing cores are coated with a cladding layer, an inner conductive layer is formed by stranding a plurality of first wires, and the first wires are circumferentially distributed outside the cladding layer and are tangent to each other. A main middle conductive layer includes a plurality of second wires, the second wires are circumferentially distributed outside the inner conductive layer, the second wires are alternately distributed with the first wires, each of thesecond wires is simultaneously tangential to two adjacent first wires, and a gap is between any two adjacent second wires. An accessory middle conductive layer comprises a plurality of third wires, and each of the third wires is disposed in gaps and is simultaneously tangential to two adjacent second wires and an adjacent first wire. The outer part of the middle conductive layer is coated with anouter conductive layer which is formed by stranding a plurality of special-shaped conductive wires, a V-shaped groove is formed by any adjacent special-shaped conductive wires on the outer surface ofthe outer conductive layer, and the V-shaped groove is recessed toward the inside.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to an aluminum-clad Invar core super-heat-resistant aluminum alloy type low wind pressure wire. Background technique [0002] With the advancement of science and technology, the voltage level of the line is getting higher and higher, and the distribution of my country's resources and the rapid development of the eastern economy determine that my country's transmission lines present the characteristics of UHV and long-distance transmission. [0003] The main problems encountered in UHV and long-distance transmission lines are: 1. According to the requirements of power companies to build "first-class power grids", overhead power lines should be resource-saving and environment-friendly. With the increase of the voltage level, the corona loss of the wire on the line has attracted extensive attention of researchers. It is true that the corona phenomenon can be reduced by increasing the ar...

AI Technical Summary

Problems solved by technology

[0003] The main problems encountered in UHV and long-distance transmission lines are: 1. According to the requirements of power companies to build "first-class power grids", overhead power lines should be resource-saving and environment-friendly

With the increase of the voltage level, the corona loss of the wire on the line has attracted extensive attention of researchers. It is true that the corona phenomenon can be reduced by increasing the area of ​​the wire to increase the outer diameter of the wire. However, increasing the cross section of the wire will cause the entire line One-time construction cost increase; 2. UHV conductors will pass through different climate zones during long-distance transmission, and the conductors subjected to wind pressure account for about 60% of the overall line, and even some transmission lines will pass through strong wind areas. In addition to the strength of the wire itself, which must be able to withstand the test of wind load, the tower rod needs to bear the force transmitted by the wire due to the wind load and the resultant force of the tower rod itself under the wind load.

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