Pressure-bearing cable capable of efficiently dissipating heat

Abstract

The invention relates to a high-efficiency heat-dissipating pressure-bearing cable, comprising a cable body and a shape-memory heat-conducting sheet sheathed outside the cable body; the shape-memory heat-conducting sheet extends along the length direction of the cable and has a spiral radial cross-section under a static state The shape-memory heat-conducting sheet is composed of a first heat-conducting layer, a second heat-conducting layer, and a sealed cavity surrounded by the first heat-conducting layer and the second heat-conducting layer; the first heat-conducting layer forms a spiral form of the shape-memory heat-conducting sheet The outer layer, the second heat conduction layer forms the spiral inner layer of the shape memory heat conduction sheet; the high-efficiency heat dissipation pressure-bearing cable can automatically and automatically change the corresponding heat dissipation area according to the heat generation of the cable, thereby effectively ensuring the stability of the cable temperature , to prevent various damages and dangers caused by excessive temperature of the cable, reduce the waste of electric energy, and can capture the external wind, and use the external wind to dissipate the heat of the cable more efficiently; in addition, the cable has good compressive performance.

Description

technical field [0001] The invention relates to a high-efficiency heat dissipation pressure-bearing cable, which belongs to the field of electric power transmission. Background technique [0002] Cables are widely used in production and life. Cables are usually rope-like cables twisted by several wires or groups of wires. Each group of wires is insulated from each other and is often twisted around a center. The entire outer The bread has a highly insulating covering. Most of them are erected in the air or installed underground or underwater for telecommunications or power transmission; existing cables, especially cables with large current flux and high voltage, generate a lot of heat for a long time, which is easy to fatigue the cable structure and packaging materials. It affects the material properties, damages the cable structure, and is easy to cause danger and produce unpredictable consequences. Moreover, the resistivity of the cable increases with the increase of tempe...

AI Technical Summary

Problems solved by technology

Most of them are erected in the air or installed underground or underwater for telecommunications or power transmission; existing cables, especially cables with large current flux and high voltage, generate a lot of heat for a long time, which is easy to fatigue the cable structure and packaging materials. It affects the material properties, damages the cable structure, and is easy to cause danger and produce unpredictable consequences. Moreover, the resistivity of the cable increases with the increase of temperature, which will waste electric energy. The heat conduction part of the cable uses a copper core, and the copper is soft. Minor deformations are likely to occur during extrusion and transportation, which affects power transmission efficiency

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