A power cable with self-removing snow function

Abstract

The invention discloses a power cable with a self-removal snow function, which belongs to the field of power cables. The power cable with a self-removal snow function can realize snow accumulation on the surface of the cable duct and deformation when the outdoor temperature is low. The collar shrinks when the temperature drops, making the cable duct appear elliptical. At the same time, the ball bag is attached to the cable duct, and the surface of the cable duct is uneven, forming a super-hydrophobic bionic phenomenon. Clean up the debris attached to the surface of the cable duct, and at the same time, the rubber collar squeezes the air bag, causing the compressed balloon connected to it to inflate, and disperses the snow accumulated on the top of the cable duct to both sides After dissipating, when the temperature gradually rises, the deformed collar drives the air bag to rebound, sucks the outside air back, and dissipates heat for the long-term operating cables, making the cable ducts less prone to loss due to long-term continuous large amounts of heat.

Description

technical field [0001] The invention relates to the field of power cables, in particular to a power cable with self-snow removal function. Background technique [0002] The use of power cables has a history of more than 100 years. In 1879, American inventor T.A. Edison wrapped jute on a copper rod and threaded it into an iron pipe, and then filled it with asphalt mixture to make a cable. He laid this cable in New York, creating underground electricity transmission. In the following year, the British Callender invented asphalt-impregnated paper-insulated power cables. In 1889, the British S.Z. Ferranti laid a 10 kV oil-impregnated paper insulated cable between London and Deptford. In 1908, the UK built a 20 kV cable network. Power cables are used more and more widely. In 1911, a 60 kV high-voltage cable was laid in Germany, and the development of high-voltage cables began. In 1913, the German M. Horchstedt developed a component-phase shielded cable, which improved the e...

AI Technical Summary

Problems solved by technology

[0003] At present, when power cables are in use, most of them are buried in the soil or laid indoors, in trenches, and tunnels. In the air, in cold and snowy weather, snow will adhere to the surface of the power cable, and the snow may damage the insulation layer on the surface of the power cable under long-term extrusion. When the temperature is high, the damaged insulation layer burns, causing fire hazards, and it is difficult for the staff to repair

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