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Manufacturing method of control cable used in containment vessel of third-generation nuclear power station

A nuclear power plant containment and control cable technology, applied in the field of nuclear power, can solve the problem that the cable performance cannot meet the requirements of the third-generation nuclear power plant, etc., and achieve the effects of high flame retardancy, excellent electrical performance, and high electrical insulation.

Inactive Publication Date: 2019-12-24
SICHUAN MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defect that the existing cable performance in the prior art cannot meet the requirements of the third-generation nuclear power plant, the present invention provides a cable that can meet the requirements of the third-generation nuclear power plant in terms of design service life, radiation resistance, flame retardancy and safety performance. The manufacturing method of the control cable used in the containment of the third generation nuclear power plant

Method used

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  • Manufacturing method of control cable used in containment vessel of third-generation nuclear power station
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  • Manufacturing method of control cable used in containment vessel of third-generation nuclear power station

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 The manufacturing method of the control cable used in the containment of the third generation nuclear power plant

[0043] First of all, the material selection step of S1 is specifically to select the copper wire blank for electrical use as the conductor, and the polyimide film tape must be selected to withstand high temperature above 200 °C. High polymer material, the inner insulation is made of radiation-resistant cross-linked polyethylene with high electrical performance, the outer insulation is made of radiation-resistant, halogen-free, low-smoke, flame-retardant cross-linked polyolefin, and the sheath is made of radiation-resistant, halogen-free, low-smoke, flame-retardant cross-linked polyolefin .

[0044] S2 wire drawing step specifically refers to a pressure processing method in which the electrical copper wire billet passes through multiple die holes on the wire drawing equipment and undergoes plastic deformation under a certain tension, so that th...

Embodiment 2

[0057] Embodiment 2 The manufacturing method of the control cable used in the containment of the third generation nuclear power plant

[0058] First of all, carry out the S1 material selection step, specifically the conductor selection of copper wire blank for electrical use, the polyimide film belt must be selected with a high temperature resistance above 200 ℃, and the insulation and sheath materials must be selected after long-term heat resistance evaluation for its thermal life More than 60 years of polymer materials, the inner insulation is made of high electrical performance radiation-resistant cross-linked ethylene propylene, the outer insulation is made of radiation-resistant, halogen-free, low-smoke, flame-retardant cross-linked ethylene-propylene, and the sheath is made of radiation-resistant, halogen-free, low-smoke, flame-retardant cross-linked ethylene propylene.

[0059] S2 wire drawing step specifically refers to a pressure processing method in which the electri...

Embodiment 3

[0072]Example 3 Performance Testing Experiment of Control Cables Used in the Containment of the Third Generation Nuclear Power Plant

[0073] Set six groups of experimental groups, wherein experimental group 1-3 adopts the preparation method of embodiment 1, wherein experimental group 4-6 adopts the preparation method of embodiment 2, and the specific preparation process parameter control is shown in table 1

[0074] Table 1 Concrete preparation process parameter control table

[0075]

[0076]

[0077] Then test the control cables used in the containment of the six experimental groups, and get the final performance test parameters Table 2

[0078] Detection parameter table 2

[0079]

[0080]

[0081] It can be seen from Table 2 that the performance of experimental group No. 6 is the best, and it is superior to other experimental group cables in terms of design service life, radiation resistance, flame retardancy and safety performance.

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Abstract

The invention discloses a manufacturing method of a control cable used in a containment vessel of a third-generation nuclear power station. The manufacturing method comprises the following steps: S1,material selecting; S2, wire drawing; S3, annealing and tinning; S4, conductor twisting; S5, co-extruding and coating of an inner insulating layer and an outer insulating layer; S6, irradiation cross-linking; S7, insulating wire core wrapping; S8, cabling; S9, extruding of a filling layer; S10, shielding; S11, extruding of an outer sheath layer; S12, irradiation cross-linking; S13, performance inspection test; and S14, finished product packaging and warehousing. According to the invention, the insulation and sheath material is a high polymer material whose thermal life is greater than 60 yearsthrough long-term heat resistance evaluation, the manufactured cable has a service life greater than 60 years under the condition that the conductor works for a long time at a temperature of 90 DEG C, and the cable can tolerate irradiation aging under normal working conditions in a containment vessel of a third-generation nuclear power station and irradiation aging under accident DBA.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a method for manufacturing a control cable used in the containment of a third-generation nuclear power plant. Background technique [0002] The energy released by the fusion of light nuclei and the splitting of heavy nuclei is called nuclear fusion energy and nuclear fission energy respectively, referred to as nuclear energy or nuclear power. A nuclear power plant refers to a facility that converts nuclear energy into electrical energy through appropriate devices. Nuclear power plants use nuclear reactors instead of boilers in thermal power plants, and use nuclear fuel to generate heat in a special form of "combustion" in nuclear reactors, turning nuclear energy into thermal energy to heat water and generate steam. [0003] With the development of nuclear power technology, in order to eliminate the negative impact of nuclear power plant accidents, the nuclear power industry in the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/02H01B13/14H01B13/24H01B13/26
CPCH01B13/00H01B13/0016H01B13/003H01B13/0235H01B13/141H01B13/148H01B13/24H01B13/2613
Inventor 宋强陈光高沈智飞李勇军兰超王冰迪王娟周禄成高松林
Owner SICHUAN MINGXING CABLE
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