Cable for high-voltage line

A high-voltage line and cable technology, applied in the direction of insulated cables, cables, power cables with shielding layers/conducting layers, etc., can solve problems such as affecting the transmission efficiency of cables, burning cables, easily causing leakage current, etc., and achieving excellent mechanical and physical properties. , Excellent flame retardant performance, no environmental pollution effect

Inactive Publication Date: 2016-07-20
龚永祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the maturity of high-voltage and ultra-high voltage transmission technology, the market demand for high-voltage and ultra-high voltage cables is increasing day by day. Because the environment of cable lines is different, and some places are relatively humid and dirty, even bare wires, due to the electric field The surface of the cable is still very easy to cause leakage current, which will generate a lot of heat and form a large resistance value, which will affect the transmission efficiency of the cable. In severe cases, the cable will be burned
However, cables with outer sheaths in the prior art are not suitable for high-voltage applications. Therefore, the power industry expects high-quality cables that can be applied to high-voltage transmission

Method used

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  • Cable for high-voltage line
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  • Cable for high-voltage line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] please see figure 1 , a cable for high-voltage lines, which includes a conductor 1, an insulating layer 3 coated outside the conductor by extrusion molding, a shielding layer 4 coated outside the insulating layer, and a sheath layer coated outside the shielding layer by extrusion 5, characterized in that the sheath layer is composed of the following raw materials in parts by weight: commercially available medium-density polyethylene or high-density polyethylene for wire and cable: 85 to 100 parts;

[0045] Ethylene-vinyl acetate copolymer: 10-20 parts;

[0046] Titanium dioxide with fineness less than 400 mesh: 5-8 parts;

[0047] Carbon black with a fineness of less than 400 mesh: 2 to 4 parts;

[0048] Aluminum hydroxide: 5-10 parts;

[0049] Titanium trioxide: 2 to 6 parts;

[0050] Antioxidant for cable sheathing material of commercially available model 1010 or 1076: 1 to 3 parts;

[0051] Polyethylene wax: 2 to 4 parts;

[0052] Fineness less than 400 mesh mi...

Embodiment 2

[0054] please see figure 2 , a cable for high-voltage lines, which includes a conductor 1, an inner shielding layer 2 coated outside the conductor, an insulating layer 3 coated outside the inner shielding layer by extrusion molding, a shielding layer 4 wrapped outside the insulating layer, and The sheath layer 5 is formed by extrusion coating outside the shielding layer, and it is characterized in that the sheath layer is composed of the following raw materials in parts by weight: commercially available medium-density polyethylene or high-density polyethylene for wire and cable: 85 ~100 copies;

[0055] Ethylene-vinyl acetate copolymer: 10-20 parts;

[0056] Titanium dioxide with fineness less than 400 mesh: 5-8 parts;

[0057] Carbon black with a fineness of less than 400 mesh: 2 to 4 parts;

[0058] Aluminum hydroxide: 5~10 parts;

[0059] Titanium trioxide: 2 to 6 parts;

[0060] Antioxidant for cable sheathing material of commercially available model 1010 or 1076: 1 ...

Embodiment 3

[0065] please see image 3 , a cable for high-voltage lines, including a cable core formed by placing three insulated conductors in a triangular cross section, a shielding layer 4 coated outside the cable core, and a sheath layer 5 coated outside the shielding layer by extrusion , the gap between the cable cores is filled with a filler 6 that prevents the movement of three insulated conductors, each insulated conductor includes a conductor 1 and an insulating layer 3 coated outside the conductor; it is characterized in that the sheath layer is calculated by weight, Consists of the following raw materials:

[0066] Commercially available medium-density polyethylene or high-density polyethylene for wire and cable: 85 to 100 parts;

[0067] Ethylene-vinyl acetate copolymer: 10-20 parts;

[0068] Titanium dioxide with fineness less than 400 mesh: 5-8 parts;

[0069] Carbon black with a fineness of less than 400 mesh: 2 to 4 parts;

[0070] Aluminum hydroxide: 5~10 parts;

[007...

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Abstract

The invention belongs to the technical field of cables, and particularly relates to a cable for a high-voltage line.The cable comprises a conductor, an insulating layer covering the conductor in an extrusion molding mode, a shielding layer covering the insulating layer, and a sheath layer covering the shielding layer in an extrusion molding mode, wherein the sheath layer is prepared from, by weight, 85-100 parts of medium or high-density polyethylene, 10-20 parts of ethylene-vinyl acetate copolymer, 5-8 parts of titanium dioxide with fineness smaller than 400 meshes, 2-4 parts of carbon black with fineness smaller than 400 meshes, 5-10 parts of aluminum hydroxide, 2-6 parts of titanium sesquioxide, 1-3 parts of antioxidant for a cable sheath material with market model of 1076 or 1010, 2-4 parts ofpolyethylene wax and 25-35 parts of mica or silicon carbide or titanium oxide with fineness smaller than 400 meshes.The cable has the advantages of being better in mechanical and physical property, electric insulation property, environment cracking resistance, aging resistance, heat resistance, fire resistance, strong current resistance and flame retardation property.

Description

[0001] This application is a divisional application of an invention patent named: A high-voltage cable, and the filing date is: May 26, 2014. technical field [0002] The invention belongs to the technical field of cables, in particular to a cable for high-voltage lines. Background technique [0003] With the maturity of high-voltage and ultra-high voltage transmission technology, the market demand for high-voltage and ultra-high voltage cables is increasing day by day. Because the environment of cable lines is different, and some places are relatively humid and dirty, even bare wires, due to the electric field The effect of the cable surface is still very easy to cause leakage current, thereby generating a large amount of heat, forming a large resistance value, affecting the transmission efficiency of the cable, and in severe cases, the cable will be burned. However, cables with outer sheaths in the prior art are not suitable for high-voltage applications. Therefore, the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/04C08K3/22H01B9/02H01B7/17
CPCC08L23/06C08K2201/014C08L2201/02C08L2201/08C08L2203/202C08L2205/025C08L2205/03C08L2207/062H01B7/17H01B9/02C08L23/0853C08K13/02C08K2003/2241C08K3/04C08K2003/2227C08K2003/2237
Inventor 龚永祥
Owner 龚永祥
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