High-temperature-resistant variable-frequency cable with protective sleeve

Abstract

The invention relates to the technical field of variable-frequency cables, in particular to a high-temperature-resistant variable-frequency cable with a protective sleeve. The cable comprises a cable body, connecting rings, a protection mechanism and a heat dissipation mechanism, the protective mechanism is arranged at a position close to the periphery in the connecting ring, the heat dissipation mechanism is arranged at a position close to the center in the connecting ring, the connecting rings are arranged at the positions, close to the two ends, of the cable body, the protection mechanism comprises protection rings and a buffer mechanism, and the three protection rings are distributed at the positions, close to the periphery, of the inner surfaces of the connecting rings at equal intervals. According to the invention, through arrangement of the protection mechanism, multiple groups of cable bodies can be effectively separated and protected, so that the loss caused by friction between adjacent cable bodies is reduced, and meanwhile, the device sleeves the position, close to the joint of the two ends, of the outer surface of the cable body, so that the two ends of the cable body can be protected; therefore, the fracture probability of a connection part with other equipment is reduced, and normal operation of a power system and related equipment is ensured.

Description

technical field [0001] The invention relates to the technical field of frequency conversion cables, in particular to a high temperature resistant frequency conversion cable with a protective sheath. Background technique [0002] The structure of the frequency conversion cable includes three insulated wires of the main line and three insulated wires of the neutral line. The inner wrapping layer, the copper tape layer, the outer wrapping layer and the outer sheath layer are arranged in sequence outside the main line insulated wire and the neutral line insulated wire to form a 3+ The 3-core structure makes the cable have strong voltage shock resistance, can withstand the pulse voltage of high-speed and frequent frequency conversion, and plays a good role in protecting frequency conversion electrical appliances. [0003] In the article "Causes of Insulation Breakdown and Short Circuit of Wire and Cable", it is mentioned that the causes of insulation breakdown and short circuit o...

AI Technical Summary

Problems solved by technology

[0005] With the continuous expansion of power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding and other industries, the demand for frequency conversion cables is also growing rapidly. When existing frequency conversion cables are used, multiple sets of frequency conversion cables are often used. At the same time, it is connected to the equipment, so it is easy to cause the adjacent frequency conversion cables to rub against each other during use, resulting in damage to the outer skin. At the same time, the outer skin of the frequency conversion cable is relatively hard, which is easy to be damaged during the use of the line bending arrangement, especially When it is used in mines and railway construction, due to the severe vibration in this environment, it is easy to cause the cable to rub against other frequency conversion cables or the contact area between the equipment and the ground, and it is affected by the external environment or the vibration generated during the operation of the equipment. Bending or even breaking will not only easily cause cable insulation breakdown and short circuit, but also cause sudden stop of equipment and cable short circuit, which will increase safety hazards, endanger personal safety, and increase the danger in the working process.

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