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Radiation resisting signal cable for third generation nuclear power plant and production method

A radiation-resistant, electrical signal technology, applied in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., can solve problems such as differences in material composition and test items, and achieve excellent radiation resistance, good low smoke density, The effect of good environmental corrosion resistance and flame retardant performance

Inactive Publication Date: 2010-07-07
SHANGHAI YALONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The types of cables used in nuclear power plants are basically the same as those in general thermal power plants, but their material composition and test items are quite different.

Method used

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  • Radiation resisting signal cable for third generation nuclear power plant and production method
  • Radiation resisting signal cable for third generation nuclear power plant and production method
  • Radiation resisting signal cable for third generation nuclear power plant and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] It is explained by taking the cabled components as a twisted group. The radiation-resistant signal cable of the third-generation nuclear power plant is composed of a conductor 1 , an insulating layer 2 , a twisted pair 3 , a filling layer 4 , a tape 5 , a shielding layer 6 and an outer sheath 7 .

[0049] in:

[0050] The conductor adopts the copper conductor structure stipulated in GB / T3956, which can be tinned or not tinned. The surface of the conductor is smooth, free of burrs and scratches; Radiation, environmental protection, high flame retardancy and electrical insulation performance; the cabled components should be twisted pairs;

[0051] The filling layer uses alkali-free glass silk rope as the filling material to ensure the high flame retardancy and roundness of the product. The straps are non-hygroscopic straps.

[0052] The shielding layer can be divided into copper wire braided shielding, copper tape, and aluminum-plastic composite tape. The braiding dens...

Embodiment 2

[0056] The cable-forming element is a three-wire group, and the rest are the same as in Embodiment 1.

Embodiment 3

[0058] As for the cabling element, four-core cables are directly twisted into a four-wire group, and the rest are the same as in Embodiment 1.

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Abstract

The invention relates to a radiation resisting signal cable for a third generation nuclear power plant and a production method. The cable comprises a conductor 1, an insulation layer 2, a cable element 3, a packing layer 4, a packing belt 5, a shielding layer 6 and an outer sheath 7, wherein the conductor adopts the first or the second class conductor structure specified in the GB / T3956; the thickness of the insulation layer conforms to the regulations specified in the TB / T2476; the shielding layer is weaved by brass wires or wrapped by the copper wires or by the al / plastic compound tapes; the thickness of the outer sheath conforms to the regulations specified in the TB / T2476; the cable element is a twist pair group or a triple wire group or a quintuple wire group. The production method is characterized in that the polyamide-imide material and special process are used, so that the produced cable has the service life of over fifty years, and the accumulated irradiation dosimetry is not lower than 850 KGy.

Description

technical field [0001] The invention relates to a radiation-resistant signal cable for a third-generation nuclear power plant and a manufacturing method thereof, belonging to the technical field of cables. Background technique [0002] In recent years, my country's nuclear power industry has developed rapidly. By 2020, the proportion of nuclear power in the total power generation will rise from 1.8% to 4%. It is conservatively estimated that the 1E-grade cables used in nuclear power plants will reach 4 billion yuan on average every year. The market prospect of nuclear power cables broad. [0003] The types of cables used in nuclear power plants are basically the same as those in general thermal power plants, but their material composition and test items are quite different. Radiation-resistant cables for nuclear power plants are installed in the containment, and are able to perform their prescribed functions under seismic loads and under normal accident conditions and / or aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B13/00H01B13/14
Inventor 计初喜鲁邦秀于景丰赵怀顺
Owner SHANGHAI YALONG IND