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Rat-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission line

A technology for transmission lines and coaxial cables, applied in coaxial cables, circuits, power cables with shielding layers/conductive layers, etc., can solve problems such as uneven electric fields of cables, achieve excellent electrical and physical properties, and design conductor structures Reasonable and convenient conductor connection

Inactive Publication Date: 2013-05-01
湖北龙腾红旗电缆(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a rat-proof and termite-proof coaxial cable for the grounding of ultra-high voltage transmission lines, which can solve the problem of uneven electric field of the cable.

Method used

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  • Rat-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission line
  • Rat-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission line

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Embodiment Construction

[0021] Such as figure 1 As shown, a rodent-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission lines, the inner copper conductor 1 is wrapped with a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a semiconductor tape layer 5, and an outer copper conductor Layer 6 and outer jacket layer 7.

[0022] The insulating layer 3 is a cross-linked polyethylene insulating layer.

[0023] The outer sheath layer 7 is a high density polyethylene sheath layer.

[0024] The production process of the present invention is as figure 2 As shown, the key points for each step are as follows:

[0025] 1. Inner copper conductor 1

[0026] The inner copper conductor 1 is composed of bare annealed copper wires conforming to GB / T3956 (purity of copper ≥ 99.97%). In the manufacturing process of the cable conductor, the oxygen-free copper rod is firstly manufactured by the imported up-drawing production line, and the single wire i...

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PUM

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Abstract

The invention provides a rat-proof and termite-proof coaxial cable for grounding an ultra-high voltage transmission line. A conductor shielding layer, an insulating layer, an insulating shielding layer, a semi-conducting tape layer, an outer copper conductor layer and an outer sheath layer wrap outside an inner copper conductor in sequence, wherein the insulating layer is a crosslinked polyethylene insulating layer, and the outer sheath layer is a high-density polyethylene sheath layer. According to the rat-proof and termite-proof coaxial cable for grounding the ultra-high voltage transmission line, provided by the invention, the problem that an electric field of the cable is not even can be solved; a rat-proof and termite-proof function is good; the use is safe and reliable; and the service life is long.

Description

technical field [0001] The invention relates to a coaxial cable, in particular to a rat-proof and ant-proof coaxial cable for grounding of ultra-high voltage transmission lines. Background technique [0002] At present, there is no unified standard for coaxial cables in the country. The traditional coaxial cable has a simple structure, and its structure is 1) inner copper conductor; 2) polyethylene insulation; 3) outer copper conductor; 4) polyethylene sheath. There are following disadvantages: [0003] 1. Polyethylene plastic is generally used as the insulating layer. Polyethylene insulating materials have poor mechanical properties and low heat-resistant and stable temperature. The grounding of the metal sheath of the ultra-high voltage system cable is very important. Both ends of the sheath form an interconnected protective grounding. Once the coaxial cable is grounded and the metal sheath forms a path, a circulating current will be generated in the metal sheath, causing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/04H01B9/02H01B13/00
Inventor 胡涛赵云卫建良孙勇黎亮周清银胡丙强
Owner 湖北龙腾红旗电缆(集团)有限公司
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