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A protection device for moisture-proof underground cables

A technology for underground cables and protection devices, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of poor stability of water blocking effect and decline of comprehensive performance, and achieve improved tensile and cracking resistance, good fatigue resistance, The effect of preventing moisture from entering

Active Publication Date: 2017-10-03
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned disclosed technology has optimized and improved the structure of the cable for moisture-proof and waterproof defects, so as to increase the service life of the cable. However, in practical applications, there are problems of poor stability of the water-blocking effect and a relative decline in overall performance.

Method used

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  • A protection device for moisture-proof underground cables
  • A protection device for moisture-proof underground cables
  • A protection device for moisture-proof underground cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] refer to Figure 1~2 , a protection device for a moisture-proof underground cable, comprising a moisture-proof underground cable and a protective sheath, the moisture-proof underground cable includes a cable body, and the cable body sequentially includes a guide core 1, an insulating layer I2, an inner lining layer 3, a second A water-blocking layer 4, a metal sheath 5, a second water-blocking layer 6 and an outer covering layer 7, the guide cores 1 are multiple, the guide cores 1 are covered with an insulating layer II10, and the guide cores 1 are filled with Cross-linked polyolefin, 5wt% carbon fiber is added in the cross-linked polyolefin 12, the outer surface of the outer coating layer 7 is coated with an anti-corrosion material 13, and the anti-corrosion material 13 is prepared from the following raw materials in parts by weight : 12 parts of polypropylene, 6 parts of ethyl acetate, 18 parts of nano attapulgite, 8 parts of polyamide wax, 15 parts of phenolic resin,...

Embodiment 2

[0029] refer to Figure 1~2 , a protection device for a moisture-proof underground cable, comprising a moisture-proof underground cable and a protective sheath, the moisture-proof underground cable includes a cable body, and the cable body sequentially includes a guide core 1, an insulating layer I2, an inner lining layer 3, a second A water-blocking layer 4, a metal sheath 5, a second water-blocking layer 6 and an outer covering layer 7, the guide cores 1 are multiple, the guide cores 1 are covered with an insulating layer II10, and the guide cores 1 are filled with Cross-linked polyolefin 12, 7wt% carbon fiber is added in the cross-linked polyolefin 12, the outer surface of the outer coating layer 7 is coated with anti-corrosion material 13, and the anti-corrosion material 13 is prepared from the following raw materials in parts by weight Composition: 12 parts of polypropylene, 6 parts of ethyl acetate, 18 parts of nano attapulgite, 8 parts of polyamide wax, 15 parts of phen...

Embodiment 3

[0033] refer to Figure 1~2 , a protection device for a moisture-proof underground cable, comprising a moisture-proof underground cable and a protective sheath, the moisture-proof underground cable includes a cable body, and the cable body sequentially includes a guide core 1, an insulating layer I2, an inner lining layer 3, a second A water-blocking layer 4, a metal sheath 5, a second water-blocking layer 6 and an outer covering layer 7, the guide cores 1 are multiple, the guide cores 1 are covered with an insulating layer II10, and the guide cores 1 are filled with Cross-linked polyolefin 12, 2wt% carbon fiber is added in the cross-linked polyolefin 12, the outer surface of the outer coating layer 7 is coated with anti-corrosion material 13, and the anti-corrosion material 13 is prepared from the following raw materials in parts by weight Composition: 10 parts of polypropylene, 8 parts of ethyl acetate, 15 parts of nano attapulgite, 5 parts of polyamide wax, 12 parts of phen...

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Abstract

The invention provides a protection device for a moisture-proof underground cable, which belongs to the technical field of cables, and includes a moisture-proof underground cable and a protective sheath, and a moisture-proof underground cable, including a cable body. The cable body sequentially includes a guide core, an insulating layer I, and an inner liner layer, the first water-blocking layer, the metal sheath, the second water-blocking layer and the outer covering layer, there are multiple guide cores, the guide cores are covered with insulating layer II, and cross-linked polyolefin is filled between the guide cores, and the cross-linked polyolefin Carbon fiber is added, and the outer surface of the outer layer is coated with anti-corrosion materials; the protective sheath is set on the outside of the moisture-proof underground cable, including the protective sheath body. The shape of the protective sheath body is adapted to the shape of the moisture-proof underground cable, and the inner surface is concave. A structure that alternates with convex surfaces and is coated with anti-corrosion material. The invention improves and optimizes the structure of the protection device of the existing underground cable, so that the comprehensive performance of the cable is improved, especially the anti-corrosion performance is significantly improved, the water blocking performance is excellent, and the stability is strong.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a protection device for moisture-proof underground cables. Background technique [0002] A cable is a wire made of one or more mutually insulated conductors surrounded by an insulation and a protective layer, and is used to transfer power or information from one place to another. Underground cables, compared to common overhead lines, are often buried underground. Unlike elevated high-voltage lines, cables are often laid in cable trenches, tunnels, pipelines or indoors. After entering the modern society, due to the shortage of urban land, heavy traffic pressure, city appearance construction and other reasons, large cities generally adopt underground cable transmission. Due to the underground environment, underground cables are easily damaged or corroded. Therefore, most underground cables are installed in pipelines, which are used to isolate the external environment, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/28H01B7/282H01B7/288H01B7/18C08L23/00C08K7/06C09D161/06C09D123/16C09D177/00C09D5/08C09D7/12
CPCC08K7/06C08K2201/011C08L2203/202C08L2205/03C09D5/08C09D7/61C09D7/63C09D7/65C09D123/14C09D161/06H01B7/18H01B7/2806H01B7/2825H01B7/288C08L23/00C08L77/00C08K13/02C08K3/346C08K3/34C08L61/06
Inventor 季元堂董军雷张燨刘雨张莉彭传军刘铮吴海波张震郭栋张骥李峰冯富全牛栋李小丽方利李静华
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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