Strain clamp for aluminum alloy cable

Abstract

The invention discloses a strain clamp for an aluminum alloy cable. The strain clamp is characterized in that: the strain clamp comprises elements of, by weight: 0.11 to 0.28% of Cu, 0.02 to 0.21% of Zr, 0.005 to 0.012% of Y, 0.25 to 0.49% of W, 0.06 to 0.11% of Zn, 0.10 to 0.77% of V, and balance of aluminum and inevitable impurities. The conductivity of the strain clamp is 62.76 to 63.8% IACS, and the tensile strength of the strain clamp is 383 to 392MPa. According to the invention, with the improvement on prior cables, costs on electric energy loss and cable maintenance are greatly reduced, such that the cost is reduced.

Description

technical field [0001] The invention relates to cables, in particular to an aluminum alloy cable strain clamp material. Background technique [0002] At present, the commonly used transmission lines in China are aluminum stranded wires with steel cores, which have the following defects: easy to produce hysteresis damage, consume electric energy; small contact area, uneven insertion, easy to generate heat; low mechanical strength, unsafe construction. Composite core aluminum stranded wire is a new type of stranded wire, which uses low-expansion fiber-reinforced heat-resistant resin composite material as the core of the stranded wire, which has the advantages of high strength, light weight, corrosion resistance, and low expansion coefficient. The role of the composite material core is to bear the weight of the entire cable and provide a certain tension, so the tension clamp used for the composite material core aluminum stranded wire itself is required to have sufficient tensil...

AI Technical Summary

Problems solved by technology

[0002] At present, the transmission lines commonly used in China are steel-cored aluminum stranded wires, which have the following defects: easy to produce hysteresis damage and consume electric energy; small contact area, uneven plug connection, easy to generate heat; low mechanical strength, unsafe construction

Existing strain clamps are mainly divided into copper-aluminum, steel, and iron-based types according to their materials. They generally have the defect of insufficient tensile strength and are easy to disconnect. However, due to the large weight, high voltage, and troublesome maintenance of high-altitude power lines, Once the power line is disconnected, it will cause a lot of loss, and the conductivity is not very high, so a considerable part of the energy is wasted