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Breakdown-resistant power cable

A power cable, anti-breakdown technology, applied in the direction of power cables, insulated cables, cables with shielding/conducting layers, etc., can solve the problem of affecting the anti-breakdown effect of cables, uniform dispersion of graphene, graphene and polymer matrix. Tolerance is poor and other problems, to achieve excellent thermal properties, promote dispersion, improve the effect of breakdown strength

Active Publication Date: 2019-06-04
ZHONGCE YONGTONG CABLE CO LTD
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AI Technical Summary

Problems solved by technology

[0013] In order to solve the technical problem that graphene in the cable shielding material in the prior art cannot be uniformly dispersed in the polymer matrix and the compatibility between graphene and the polymer matrix is ​​very poor, thereby affecting the anti-breakdown effect of the cable, the present invention proposes the following Technical solutions:

Method used

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Embodiment 1

[0035] A breakdown-resistant power cable, comprising a conductor, the outer side of the conductor is wrapped with a conductor shielding layer, the outer side of the conductor shielding layer is wrapped with an insulating rubber layer, the outer side of the insulating rubber layer is a wrapping layer, and the outer side of the wrapping layer is It is a rubber protective layer, and the conductor shielding layer is a graphene shielding material. There is a waterproof layer between the wrapping layer and the rubber protection layer. The conductor is a copper conductor. The preparation process of described graphene shielding material comprises the steps:

[0036] S1 configures H with a volume ratio of 9:1 2 SO 4 / H 3 PO 4 Mixed acid, add the mixed acid to the mixture of flake graphite / potassium permanganate with a mass ratio of 1:7, and exotherm to 35°C;

[0037] S2 was heated to 50°C and stirred, the product was cooled to room temperature, poured into ice water, and then hyd...

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Abstract

The invention relates to a breakdown-resistant power cable, which comprises a conductor. The outer side of the conductor is wrapped with a conductor shielding layer. The outer side of the conductor shielding layer is wrapped with an insulating rubber layer. A wrapping layer is arranged outside the insulating rubber layer. A rubber protective layer is arranged outside the wrapping layer. The conductor shielding layer is made of a graphene shielding material. The power cable has good breakdown resistance and can adapt to various extreme environments.

Description

technical field [0001] The invention relates to a power cable, in particular to a breakdown-resistant power cable. Background technique [0002] With the acceleration of urbanization and modernization in our country, the domestic power system is constantly being improved. Various large-scale hydroelectric power stations, large-scale intensive development of coal, hydraulic power, nuclear energy, and renewable new energy power stations are all under construction. This has led to an increase in the demand for XLPE insulated medium and high voltage power cables year by year. IEC 502 stipulates that cables with a rated voltage above 1.8 / 3.0kV and insulated with polyvinyl chloride and ethylene propylene rubber, and a rated voltage above 3.6 / 6.0kV must use inner and outer semi-conductive shielding layers. [0003] In recent years, my country has been committed to improving the quality level of semi-conductive shielding layers and narrowing the gap with foreign advanced levels. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/282C01B32/184C08L23/08C08K9/04C08K3/04
Inventor 李洪芳
Owner ZHONGCE YONGTONG CABLE CO LTD
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