Pressure-bearing cable capable of efficiently dissipating heat

Abstract

The invention relates to a pressure-bearing cable capable of efficiently dissipating heat. The cable comprises a cable body and a shape-memory heat-conducting sheet sleeving the cable body. The shape-memory heat-conducting sheet extends in the length direction of the cable and has a spiral radial cross section in a static force state. The shape-memory heat-conducting sheet is composed of a first heat-conducting layer, a second heat-conducting layer and a sealing cavity defined by the first heat-conducting layer and the second heat-conducting layer. The first heat-conducting layer forms the spiral outer layer of the shape-memory heat-conducting sheet. The second heat-conducting layer forms the spiral inner layer of the shape-memory heat-conducting sheet. The pressure-bearing cable capable of efficiently dissipating heat can spontaneously and automatically change the corresponding heat dissipation area according to a heat generation condition of the cable so as to guarantee the stability of cable temperature, to prevent various damages and dangers due to over-high cable temperature, and to reduce a waste of electric power, and can capture external wind to dissipate the heat more efficiently by using the external wind. In addition, the cable has good anti-compression 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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