Power cable for nuclear power plant

A technology for power cables and nuclear power plants, applied in the field of power cables for nuclear power plants, can solve problems such as fire resistance and corrosion resistance, and achieve the effects of low pH value and electrical conductivity, excellent flame retardant performance, and less smoke

Inactive Publication Date: 2014-05-14
ANHUI FUXING CABLE GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The traditional cables for nuclear power plants have always been difficult to solve the problems of fire resistance and corrosion resistance in the actual working environment

Method used

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  • Power cable for nuclear power plant

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] A power cable for nuclear power plants, including three conductors 1 (the cross-sectional area of ​​the conductors is 1.5-300mm 2 ), insulating layer 3, the outer sides of the three conductors 1 are respectively wrapped with a refractory layer 2 and an insulating layer 3, and after wrapping the insulating layer 2, the three conductors 1 are mutually twisted into a bundle, and the outer side of the insulating layer 3 is wrapped with a tape layer 4, and the tape Magnesium hydroxide is set between the layer 4 and the insulating layer 3 as the filling layer 5, and the outer side of the tape layer 4 is wrapped with an inner lining layer 6 and an armor layer 7. The armor layer 7 is made of galvanized steel strip, and the outer side of the armor layer 7 is Wrapped with a high flame-retardant, low-smoke, halogen-free, radiation-proof, and ozone-resistant polyolefin shea...

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Abstract

The invention discloses a power cable for a nuclear power plant. The power cable comprises three conductors and insulating layers, outer sides of the three conductors are wrapped by fireproof layers and insulating layers respectively, after the conductors are wrapped by the insulating layers, three cores are intertwisted into bundles, after bundling, an outer side of a cable core is wrapped by a belting layer, a magnesium hydrate filling layer is arranged between the belting layer and the insulating layers, an outer side of the belting layer is wrapped by a lining layer and an armor layer, the armor layer adopts double-steel-belt wrapping, the overlap rate of wrapping is not smaller than 60%, an outer side of the armor layer is wrapped by a high flame-retardant low-smoke halogen-free radiation-proof ozone-proof polyolefin sheath layer, and a cross section of the conductors is 1.5 to 300 mm<2>. The power cable for the nuclear power plant satisfies performance indexes of low smoke, no halogen, flame retardancy and the like which are required by a cable for the nuclear power plant, and also solves the problems of radiation protection and corrosion protection.

Description

technical field [0001] The invention relates to the cable industry, in particular to a power cable for nuclear power plants. Background technique [0002] In recent years, the wire and cable industry has overcapacity and low technical content, and the slow development of the entire industry has become a problem [0003] question. Cable companies are working hard to find a breakthrough, and new energy cables with high technological content and adapting to future market demand have become the main [0004] flow. Different from conventional cables, new energy cables with leading advantages have gradually become a hot spot for cable companies to compete. [0005] Cables for nuclear power plants are mainly distributed in nuclear islands and conventional islands for power transmission and control, computer, instrument connection, etc. The types of cables required for nuclear power plants are basically the same as those for thermal power plants. However, due to the strict requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/00
Inventor 魏宜刘忠浩
Owner ANHUI FUXING CABLE GRP
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