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High voltage transmission cable

A high-voltage transmission and cable technology, applied in the direction of power cables, power cables for overhead applications, cables, etc., can solve the problems of not very ideal, slow cable manufacturing speed, low efficiency, etc., to prevent external radiation and shorten delivery Cycle, the effect of excellent machinery

Inactive Publication Date: 2014-09-24
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of these methods have the problems of slow cable manufacturing and low efficiency. Therefore, there is an urgent need for alternative methods to make shielding layers in the industry.
[0005] Semiconductor shielding materials, because they can be realized by extrusion, and the shielding effect can meet the design requirements, therefore, more and more attention has been paid by the industry. Although various researches and explorations have been carried out on semiconductor shielding materials at home and abroad, but , the applicant feels that the existing semiconductor shielding materials that can be used for cables are not very ideal, for this reason, the applicant has improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] please see figure 1, a high-voltage transmission cable, which includes a conductor 1, an insulating layer 3 coated outside the conductor by extrusion molding, a semiconductor outer shield layer 4 coated outside the insulating layer, and an outer semiconductor shield layer coated by extrusion molding Outer sheath layer 5; It is characterized in that described semiconductor outer shielding layer comprises following raw material by weight:

[0063] Polyethylene or polypropylene or polyvinyl chloride: 40 to 60 parts;

[0064] Conductive carbon fiber: 25-35 parts;

[0065] Oxidized polyethylene: 20-30 parts;

[0066] Commercially available antioxidant for cable materials with model number 1010: 1-2 parts;

[0067] Magnesium hydroxide: 3-5 parts;

[0068] Titanium dioxide: 3-5 parts;

[0069] Carbon black: 3-5 parts;

[0070] Dioctyl terephthalate: 1-3 parts.

Embodiment 2

[0072] please see figure 2 with image 3 , a high-voltage transmission cable, which includes a conductor 1, a semiconductor inner shielding layer 2 coated outside the conductor, an insulating layer 3 coated outside the semiconductor inner shielding layer by extrusion molding, and an insulating layer coated outside the insulating layer The semiconductor outer shielding layer 4, the sheath layer 5 coated outside the semiconductor outer shielding layer by extrusion; it is characterized in that the semiconductor inner shielding layer and the semiconductor outer shielding layer all include the following raw materials by weight:

[0073] Polyethylene or polypropylene or polyvinyl chloride: 40 to 60 parts;

[0074] Conductive carbon fiber: 25-35 parts;

[0075] Oxidized polyethylene: 20-30 parts;

[0076] Commercially available antioxidant for cable materials with model number 1010: 1-2 parts;

[0077] Magnesium hydroxide: 3-5 parts;

[0078] Titanium dioxide: 3-5 parts;

[00...

Embodiment 3

[0092] please see Figure 4 , a high-voltage transmission cable, which includes a cable core, a semiconductor outer shielding layer 4 coated outside the cable core, a sheath layer 5 coated outside the semiconductor outer shielding layer by extrusion molding, and the cable core is composed of Composed of three insulated wires, the gap between the cable cores is filled with insulators 6, and each insulated wire includes a conductor 1, a semiconductor inner shield layer 2 coated outside the conductor, and an insulation layer coated outside the semiconductor inner shield layer by extrusion molding. Layer 3; it is characterized in that the semiconductor inner shielding layer and the semiconductor outer shielding layer all include the following raw materials in parts by weight:

[0093] Polyethylene or polypropylene or polyvinyl chloride: 40 to 60 parts;

[0094] Conductive carbon fiber: 25-35 parts;

[0095] Oxidized polyethylene: 20-30 parts;

[0096] Commercially available ant...

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Abstract

The invention belongs to the technical field of cables and particularly relates to a high voltage transmission cable. The high voltage transmission cable comprises a conductor (1), an insulation layer (3) wrapping the conductor in an extrusion molding mode, a semiconductor outer shielding layer (4) wrapping the insulation layer, and a hearth layer (5) wrapping the semiconductor outer shielding layer in an extrusion molding mode. The high voltage transmission cable is characterized in that the semiconductor outer shielding layer includes, by weight, 40-60 parts of polyethylene or polypropylene or polyvinyl chloride, 25-35 parts of conductive carbon fibers, 20-30 parts of oxidized polyethylene, 1-2 parts of antioxidants used for commercially available cable materials of the model of 1010, 3-5 parts of magnesium hydrate, 3-5 parts of titanium dioxide, 3-5 parts of carbon black and 1-3 parts of dioctyl terephthalate. The high voltage transmission cable has the main advantages of being better in mechanical property, current-carrying property, shielding property and the like, lighter, more stable in later contraction, higher in manufacturing speed and lower in cost.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a cable for high-voltage transmission. Background technique [0002] As a basic industry in the national economy, wire and cable occupy an increasingly important position in the national economy, accounting for about 5‰ of the country's total GDP. Cable products mainly play the role of transmitting energy and information. Therefore, it has always been There is a saying that the cable industry is the "vessel" and "nerve" of the national economy. Since the technical content of wire and cable is not very high and the required capital investment does not need to be very large, it is developing very rapidly. [0003] In the field of high-voltage transmission, China's technology is relatively advanced. Therefore, China's high-voltage transmission and modification technology is becoming more and more mature, and there are more and more high-voltage cables for transmission. In the existi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B1/24
CPCH01B1/24H01B9/008H01B9/021H01B9/027
Inventor 沈群华
Owner STATE GRID SHANDONG ELECTRIC POWER
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