a composite cable

Abstract

The invention relates to a composite cable which comprises a conductor core layer and a wrapping outer layer twisted outside the conductor core layer. The conductor core layer is a high-strength zinc-coated wire or a carbon fiber composite core. The wrapping outer layer is formed by a plurality of aluminium alloy wires or aluminium wires in a twisting mode, and every two adjacent aluminium alloy wires or aluminium wires are embedded with each other. The cross section of the outer surface of the wrapping outer layer is a full circle. The composite cable is large in current-carrying capacity, excellent in ice and snow resistance performance, large in span, high in power transmission efficiency, saving in energy and low in erecting cost.

Description

technical field [0001] The invention relates to cable technology, in particular to a cable with large span, large section and large carrying capacity. Background technique [0002] Existing cables generally use copper wire as the wire core, and round aluminum wires are stranded on the outer layer. This kind of cable mainly has the following problems: 1. Since the outer layer is twisted with circular aluminum wires, the gap between the wires is large, the effective cross-sectional area is small, and the outer diameter is large, which is difficult for storage and transportation. Takes up a lot of space. 2. The surface of the outer layer formed by twisting round aluminum wires is uneven and not smooth. It is easy to accumulate ice and snow or other load-bearing substances, which increases the load of the cable. The ability to resist ice and snow is poor, and it is easy to bend and damage the cable. 3. The tensile strength of the copper wire used is low, and the span is small ...

AI Technical Summary

Problems solved by technology

This kind of cable mainly has the following problems: 1. Since the outer layer is twisted with circular aluminum wires, the gap between the wires is large, the effective cross-sectional area is small, and the outer diameter is large, which is difficult for storage and transportation. takes up a lot of space

2. The surface of the outer layer formed by twisting round aluminum wires is uneven and not smooth. It is easy to accumulate ice and snow or other load-bearing substances, which increases the load of the cable. The ability to resist ice and snow is poor, and it is easy to bend and damage the cable.

3. The tensile strength of the copper wire used is low, the span is small when erected, and the number of poles and towers required for erecting cables is large, which not only costs a lot, wastes manpower and material resources, but also occupies a lot of land resources

[0003] Based on the above problems, the existing cables can no longer meet the new needs of the rapid development of power construction

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