Acid and alkali resistant hard aluminum type metal strand

Abstract

The invention discloses an acid and alkali resistant hard aluminum type metal strand. The acid and alkali resistant hard aluminum type metal strand comprises a stressed unit positioned at the center, and a first aluminum alloy conducting layer and a second aluminum alloy conducting layer which are sequentially stranded on the outer surface of the stressed unit; a first trapezoidal aluminum conductor layer and a second trapezoidal aluminum conductor layer are sequentially stranded on the outer surface of the second aluminum alloy conducting layer; a polyester adhesive filling part is formed by mixing a first component and a second component according to the mass ratio of 1: (2-4); the first component comprises the following raw materials in parts by weight: N-307 unsaturated polyester, butyl acrylate, iso-octyl acrylate, normal butanol, methylbenzene, talcum powder, aluminum powder, calcium carbonate and triethylene tetramine. The aluminum twisted wire not only guarantees the round of a plurality of carbon fiber raw yarns in an aluminum layer, but also avoids the aluminum layer damage during subsequent use, thereby guaranteeing the reliability of electrical property, and the bending radius being reduced to 6 times the diameter of a cable.

Description

technical field [0001] The invention relates to a power transmission wire, in particular to an acid and alkali resistant duralumin metal stranded wire. 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 the requiremen...

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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