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500kV extra-high voltage water-blocking power cable

A power cable and UHV technology, which is applied in the field of 500kV UHV water-blocking power cables, can solve problems such as missing welding and infirmity, and achieve the effects of reducing line loss, improving flexibility, and reducing skin effect

Inactive Publication Date: 2013-10-09
WUXI SHUGUANG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantages of the existing technology are that the aluminum strip longitudinal wrapping welding method has the defects of missing welding and weak welding.

Method used

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  • 500kV extra-high voltage water-blocking power cable

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Embodiment Construction

[0016] Such as figure 1 As shown, a 500kV UHV water-blocking power cable according to the present invention includes from the inside to the outside: a conductor in the center, a semi-conductive polycarbonate tape, a semi-conductive shielding layer, an insulating layer, and an insulating layer extruded sequentially outside the conductor. The insulation shielding layer is wrapped around the outer layer, and the insulation shielding layer is wrapped with a semi-conductive buffer water-blocking layer and an anti-corrosion asphalt layer in turn, and the outermost layer of the cable is extruded with an outer sheath; between the semi-conductive buffer water-blocking layer and the anti-corrosion asphalt layer Also extruded with a wrinkle-free metal sleeve.

[0017] There are many specific application approaches of the present invention, and the above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the ar...

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Abstract

The invention discloses a 500kV extra-high voltage water-blocking power cable which comprises a conductor, a semi-conductive tetoron tape, a semi-conductive shielding layer and an insulating layer from inside to outside, wherein the conductor is arranged in the center, and the semi-conductive tetoron tape, the semi-conductive shielding layer and the insulating layer are sequentially extruded outside the conductor. An insulation shielding layer further wraps the insulating layer. A semi-conductive buffering water-blocking layer and an anti-corrosion asphalt layer sequentially wrap the insulation shielding layer, an outer jacket is extruded at the outermost layer of the cable, and a seamless wrinkled metal sleeve is further extruded between the semi-conductive buffering water-blocking layer and the anti-corrosion asphalt layer. According to the 500kV extra-high voltage water-blocking power cable, a double-aluminum-pig extruded seamless aluminum pipe wraps the surface of a cable core, the risks of solder skips and infirm welding are avoided, the safety performance of the cable is ensured, and the service life of the cable is prolonged.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a 500kV ultra-high voltage water-blocking power cable. Background technique [0002] At present, with the continuous development of society, the process of urbanization is accelerating, 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. In particular, the rational use of energy is more important. The transmission of energy is closely related to voltage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/04H01B7/282H01B7/30H01B9/02
Inventor 张卫忠王红军朱强明
Owner WUXI SHUGUANG CABLE
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