Ultrahigh-voltage power cable with smooth aluminum sheath

A technology for power cables and aluminum sheaths, which is applied in the field of smooth aluminum sheathed ultra-high voltage power cables, can solve problems such as breakdown, poor electrical contact, corrosion of aluminum sheaths, etc., to reduce material loss, ensure cable operation safety, Effect of reducing the outer diameter of the cable

Pending Publication Date: 2017-10-10
WUXI SHUGUANG CABLE
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  • Abstract
  • Description
  • Claims
  • Application Information

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 l

Method used

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  • Ultrahigh-voltage power cable with smooth aluminum sheath

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] Such as figure 1 As shown, a smooth aluminum sheathed extra-high voltage power cable includes a conductor 1, a three-layer co-extruded inner shielding layer 2, an insulating layer 3 and an insulating shielding layer 4 outside the conductor; a semi-conductive buffer resistor is provided outside the insulating shielding layer The water belt 5 is provided with a smooth aluminum metal sheath 6 outside the semi-conductive buffer water blocking belt, coated with an anti-corrosion asphalt layer 7 outside the smooth aluminum metal sheath, and has a non-metallic sheath 8 outside the anti-corrosion asphalt layer. A graphite coating 9 is provided outside the layer.

[0021] The invention improves the structure of the metal sheath, changes the commonly used longitudinal welded embossed structure into a smooth aluminum sheath without embossing, makes the semi-conductive buffer l...

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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...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/17H01B7/20H01B7/28H01B7/282H01B9/02
CPCH01B7/0275H01B7/17H01B7/205H01B7/2806H01B7/2825H01B9/021
Inventor 张卫忠史波
Owner WUXI SHUGUANG CABLE
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