Capacity-increase type electric power overhead power transmission aluminum alloy conductor

Abstract

The present invention discloses a capacity-increase type electric power overhead power transmission aluminum alloy conductor. The capacity-increase type electric power overhead power transmission aluminum alloy conductor is characterized in that an aluminum conductor wrapping layer is twisted orderly on the outer surface of a second aluminum alloy conductive layer and is formed by twisting 19-21 aluminium alloy conductors of which the cross-sections are Z-shaped; a polyester adhesive filling part is formed by mixing a first component and a second component, the first component is composed of the following components of, by weight parts, N-307 unsaturated polyester, butyl acrylate, 2-ethylhexyl acrylate, n-butyl alcohol, methylbenzene, talcum powder, aluminum powder, calcium carbonate and triethylene tetramine, and the second component is composed of the following components of, by weight parts, acrylic acid, methyl methacrylate, ethylene glycol, toluene diisocynate, dibutyltin dilaurate, benzoyl peroxide and salicylic acid phenyl ester. The capacity-increase type electric power overhead power transmission aluminum alloy conductor of the present invention has good heat resistant, cold resistance, acid, alkali and salt medium corrosion resistance and heat stability, is good in fixity and strong in anti-slipping property.

Description

technical field [0001] The invention relates to a power transmission wire, in particular to a capacity-increasing aluminum alloy wire for overhead power transmission. Background technique [0002] my country's national economy continues to grow at a high speed, and the demand for electricity is increasing. According to the plan of State Grid Construction Co., Ltd., the construction of 1100kV UHV transmission lines will be focused on in recent years. In the construction of transmission lines, larger cross-section conductors are required, but the outer diameter of the conductors is not expected to be too large. Conductor design should consider many factors, especially the transmission capacity and economic current density of the conductor, corona critical voltage, mechanical strength and so on. On the one hand, in areas with narrow lines, it is only necessary to replace wires with similar cross-sectional specifications, and basically do not need to replace iron towers to meet...

AI Technical Summary

Problems solved by technology

However, the strength of galvanized steel strand is not high, and the corrosion resistance is not strong, which shortens the overall service life of the wire

In the 1980s, aluminum-clad steel single wire appeared. At that time, due to the complicated process, it was difficult to promote. Now, it has been used in large-span lines. Its corrosion resistance is greatly enhanced, but its strength is lower than that of steel strands.

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