Ultrahigh-voltage power cable with smooth aluminum sheath

Abstract

The invention discloses an ultrahigh-voltage power cable with a smooth aluminum sheath. The ultrahigh-voltage power cable comprises a conductor, wherein an internal shielding layer, an insulation layer and an insulation shielding layer are arranged outside the conductor in an extruded way, a semiconduction buffer water blocking tape is arranged outside the insulation shielding layer, a smooth aluminum metal sleeve is arranged outside the semiconduction buffer water blocking tape, a corrosion-resistant asphalt layer is coated outside the smooth aluminum metal sleeve, a non-metal protection layer is arranged outside the corrosion-resistant asphalt layer, and a graphite coating layer is arranged outside the non-metal layer. From angles of cable bearing capability, material saving and cable running safety guarantee, the external diameter of the cable can be effectively reduced, the material consumption is reduced, the cable is compact in structure, the light design of the high-voltage cable is achieved, and meanwhile, the cable transmission quantity is also improved.

Description

technical field [0001] The invention belongs to the field of wires and cables, and in particular relates to a smooth aluminum sheath ultra-high voltage power cable. Background technique [0002] With the continuous development of society and the acceleration of urbanization, the load of electricity consumption is increasing, and the safety requirements of power supply and transmission systems are also getting higher and higher. At the same time, according to the needs of urban beautification and the vigorous implementation of the national urban network transformation, the requirements for ultra-high voltage, large cross-section, and long-length power cables are increasing, so that overhead lines can be brought into the ground to achieve urban beauty. [0003] The development trend of today's society is an environment-friendly and energy-saving society, especially the more attention is paid to the rational use of energy, and the demand for high-voltage levels is increasing. A...

AI Technical Summary

Problems solved by technology

From the perspective of electrical performance, due to the crest and trough problems of the corrugated aluminum sheath, there will be gaps between the semi-conductive buffer layers, which will also cause poor electrical contact between the buffer layer and the metal sheath, resulting in discharge and corrosion of the aluminum sheath. even breakdown

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