Stranded aluminum-clad composite core wire

Abstract

The invention provides a stranded aluminum-clad composite core wire which comprises fiber reinforced composite material cores, an aluminum coating layer, a duralumin layer and an aluminum wire layer,the outer surfaces of the fiber reinforced composite material cores are coated with the aluminum coating layer, all the fiber reinforced composite material cores are coated with the duralumin layer, and the duralumin layer is coated with the aluminum wire layer. The fiber reinforced composite material cores adopts a twisting type, the structure is relatively stable, the stress is uniform, the added aluminum coating layer can prevent external media such as water from corroding the internal fiber reinforced composite material cores, the overall tensile strength can be improved, and in the process of conducting wire connection, a steel pipe can be directly crimped outside the duralumin layer, so that the bending resistance and the corrosion resistance of the wire cores are improved.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a stranded aluminum-clad composite core conductor. Background technique [0002] Carbon fiber composite core is a new type of composite material. Due to its advantages of light weight, high strength, and good corrosion resistance, it has been used in overhead line conductor cores, bridge cables, etc. During actual operation, carbon fiber composite cores have been exposed for a long time In the atmospheric environment, under the test of various climatic conditions and strong mechanical loads, aging has become an important factor affecting the long-term reliable operation of the composite core. In addition, as a brittle composite material, the composite core has There are problems such as high requirements for crimping construction and difficult process control. [0003] At present, for the problem of crimping carbon fiber composite cores, part of the method is to add an alum...

AI Technical Summary

Problems solved by technology

[0003] At present, for the problem of crimping carbon fiber composite cores, part of the method is to add an aluminum liner to the steel pipe of the stranded carbon fiber wire crimping fitting, which better solves the problem of direct crimping. The composite core may be damaged due to bending, and the composite core is still exposed to the air as a whole, and is vulnerable to water vapor and oxygen erosion; some units also add a layer of aluminum coating to the carbon fiber composite core to improve the compression of the composite core. But the structure of the composite core is rod type or multi-strand non-twisted type, and the reliability is poor when the wire core is damaged.

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