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Water-blocking reinforced direct-current oil-impregnated paper insulated cable and preparation method thereof

A technology of insulated cables and oil-impregnated paper, applied in the direction of insulated cables, cable/conductor manufacturing, insulators, etc., can solve the problems of insulation layer damage and reduce cable service life, so as to improve bending resistance, prolong service life, and not easily break The effect of core disconnection

Inactive Publication Date: 2021-05-28
浙江物产中大线缆有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Moreover, due to limited production and construction conditions, moisture infiltration into the cable will easily damage the insulation layer and reduce the service life of the cable

Method used

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  • Water-blocking reinforced direct-current oil-impregnated paper insulated cable and preparation method thereof
  • Water-blocking reinforced direct-current oil-impregnated paper insulated cable and preparation method thereof

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. the embodiment. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] see figure 1 , the water-blocking reinforced DC oil-impregnated paper insulated cable of the embodiment of the present application includes an inner conductor 1, and the inner conductor 1 is coated with an inner semiconductive layer 2, an oil-impregnated paper composite insulating resin layer 3, and an outer semiconductive layer. Layer 4, lead sheath layer 5, insulating anti-c...

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Abstract

The invention discloses a water-blocking reinforced direct-current oil-impregnated paper insulated cable and a preparation method thereof, and the cable comprises an inner conductor, an inner semi-conductive layer, an oil-impregnated paper composite insulating resin layer, an outer semi-conductive layer, a lead sheath layer, an insulating anti-corrosion layer, an AFRP reinforcing winding layer, a butyl rubber moisture-proof layer, a polypropylene moisture absorption layer, a polyester fiber non-woven fabric wrapping layer and an outer sheath. The oil-impregnated paper composite insulating resin layer is an oil-impregnated paper composite insulating resin tape which is wound outside the inner semi-conductive layer in a multi-layer gap mode, the oil-impregnated paper composite insulating resin tape body comprises a polyolefin resin insulating layer, at least one side face of the polyolefin resin insulating layer is provided with a kraft paper layer, the thickness of the polyolefin resin insulating layer is 1 / 2-4 / 5 of the thickness of the tape body of the oil-impregnated paper composite insulating resin tape. The cable is higher in tensile strength, reliable in electrical insulation performance under high temperature and high voltage, enhanced in water-blocking and moisture-absorbing characteristics, delayed in aging and service life, and higher in durability.

Description

technical field [0001] The application belongs to the technical field of electric cables, and in particular relates to a water-blocking reinforced DC oil-impregnated paper-insulated cable and a preparation method thereof. Background technique [0002] HVDC transmission has many advantages, such as low line cost, low loss, convenient power connection, and easy control. Electricity, DC transmission of power distribution network, etc. High-voltage DC power cable insulation has the advantages of high working electric field strength, light weight, good flexibility, easy installation, small dielectric loss, low conductor loss, large carrying capacity, and no AC magnetic field. The current DC power cables tend to be miniaturized and thinner. It is necessary to consider the tensile strength to prevent broken cores and wires, and at the same time ensure the electrical insulation properties of the cables. Moreover, due to limited production and construction conditions, moisture infi...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B3/20H01B3/44H01B3/52H01B7/00H01B7/18H01B7/28H01B7/282H01B7/288H01B13/02H01B13/08H01B13/26
CPCH01B3/20H01B3/441H01B3/52H01B7/0009H01B7/0241H01B7/1825H01B7/1875H01B7/2806H01B7/282H01B7/288H01B13/02H01B13/08H01B13/26
Inventor 黄建卫江平高旭皓王成旺王登峰邵千俊
Owner 浙江物产中大线缆有限公司
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