Fiber composite rope core for overhead conducting wire

Abstract

The invention relates to a fiber composite rope core for an overhead conducting wire. The fiber composite rope core comprises an insulating layer, a core layer and a pressure sensor, wherein the insulating layer is compounded through dipping multiple layers of unidirectional or woven insulating fiber filaments, fiber tapes or fiber fabrics in a high-temperature-resistant thermosetting resin system, the core layer is formed through winding six or more fiber rods around a middle fiber rod, the fiber rods are formed through curing fibers and the high-temperature-resistant thermosetting resin system, and the core layer and the pressure sensor are sealed in the insulating layer; the resin system is prepared from the following ingredients in parts: 100 parts of thermosetting resin, 105-125 parts of curing agent, 0.5-2 parts of promoter, 0.5-3 parts of demolding agent and 0-5 parts of filler. Due to the adoption of the scheme, the fiber composite rope core provided by the invention has the advantages of low density, high safety factor, high strength, high temperature resistance, small heat expansion coefficient, good flexibility, uniform fiber stress and the like.

Description

Technical field [0001] The invention relates to a fiber composite rope core for overhead conductors. Background technique [0002] The conductors used in overhead transmission lines are mainly steel core or Invar core aluminum stranded wires. But this kind of wire has some shortcomings: large specificity, large sag, serious line loss during power transmission, chemical corrosion and corona phenomenon between metals. With the development of the power industry, the requirements for transmission wires are getting higher and higher. At the end of the last century, Japanese scholars developed an aluminum stranded wire with a fiber composite core instead of a steel core. This composite core wire has the advantages of small specific gravity, high strength, low loss, and low sag. However, because the composite core uses continuous carbon fiber The rigid rod-shaped material obtained by using glass fiber reinforced high temperature resistant thermosetting resin mainly relies on carbon fi...

AI Technical Summary

Problems solved by technology

[0003] Aiming at a series of problems such as uneven fiber stress, thermal expansion mismatch between glass fiber layer and carbon fiber layer, and sensitivity to surface defects in the hybrid fiber composite mandrel, the invention provides a fiber-reinforced high-temperature resistant thermosetting resin composite rope core, which makes it It has the advantages of low density, high safety factor, high strength, high temperature resistance, small thermal expansion coefficient, good flexibility, and uniform fiber stress.

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