An online hollow cable and its diameter expanding mechanism for processing

Abstract

The invention discloses an online hollow cable and a diameter expansion mechanism for processing the same. The online hollow cable comprises an aluminum tube, a copper tube and an insulating jacket layer, the aluminum tube is mounted inside the copper tube in a sleeved manner, a main insulating layer is connected outside the copper tube in a sleeved manner, a semiconductive layer is connected outside the main insulating layer in a sleeved manner, a shielding protection layer is connected outside of the semiconductive layer in a sleeved manner, and the insulating jacket layer is connected outside the shielding protection layer. Structural features of conventional buses are changed according to characteristics of current; by adopting a tubular structure and shielding insulation technology, dead weight is reduced, and the online hollow cable is safe, reliable, energy-saving and material-saving. Aluminum is used to save copper, so that cost is lowered substantially, and the nation and thepeople can be benefitted; an insulation shielding material can be used in various severe natural conditions, has excellent electrical performance and chemical stability and is little in medium loss, flame-resistant and aging-resistant, and service life is longer than 40 years. The shielding material is a copper film or an aluminum film. A shielding magnetic field is uniform in distribution, localdischarging potential is improved, and electric energy loss is lowered.

Description

technical field [0001] The invention relates to the field of cable preparation, in particular to an online hollow cable and a diameter-expanding mechanism for processing thereof. Background technique [0002] With the continuous development of science and technology, the use of cables is gradually increasing. In order to make cables more environmentally friendly in use, cables of various materials and structures are often used to make them more effective. [0003] There are still some deficiencies in the use of the existing on-line hollow cable processing diameter expanding mechanism. The interior of the existing hollow-core cable adopts a solid structure, and more materials are used. The copper material used in the processing is more, the cost is higher, and the service life is short, the reliability of the bus power supply is not high, the line loss is large during use, the energy used is more, and the temperature rise cannot be reduced. Moreover, the hollow setting is a...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an online hollow cable and its diameter-expanding mechanism for processing, which can solve the problem that the existing hollow cable uses a solid structure inside and uses more materials.

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