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Coaxial cable for nuclear power plant

A technology for coaxial cables and nuclear power plants, used in coaxial cables, power cables, insulated cables, etc., can solve problems such as the inability to meet the requirements of low smoke and halogen-free, and the inability to meet environmental conditions, achieve regular structure, ensure sealing performance, improve The effect of sealing performance

Active Publication Date: 2019-11-12
CHANGZHOU BAYI CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently imported products contain fluorine, which not only cannot meet the low-smoke and halogen-free requirements of China's nuclear power plants, but also cannot meet the requirements of the design basis accident environmental conditions of China's third-generation nuclear power plants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] 1) Prepare thin-wall extruded polyether ether ketone modified cable insulation material

[0080] In parts by weight, raw materials of polyetheretherketone PEEK, a nucleophilic substitution product: 100 parts; composite antioxidant: 2 parts; US Dow Corning RM4-7081 silicone powder: 1 part; black masterbatch: 2 parts;

[0081] Composite antioxidant is pentaerythritol ester: dilauryl thiodipropionate: 2-(2'-hydroxyl-3', 5'-di-t-pentylphenyl) benzotriazole mass ratio is 1:1: 0.1 mixture;

[0082] Put it into a high-speed kneader and mix at room temperature for 3 minutes. The uniformly mixed materials are poured into a high-temperature twin-screw extruder and extruded at a temperature of 340°C. Water-cooled strands are cut into pellets, and the water temperature is controlled at 60°C.

[0083] 2) Preparation of radiation crosslinked polyolefin

[0084] In parts by weight, take polyethylene substrate: 100 parts; composite antioxidant: 2 parts; processing aid: 2 parts; black...

Embodiment 2

[0094] 1) Prepare thin-wall extruded polyether ether ketone modified cable insulation material

[0095] In parts by weight, raw materials of polyetheretherketone PEEK, a nucleophilic substitution product: 100 parts; composite antioxidant: 4 parts; US Dow Corning RM4-7105 silicone powder: 3 parts; black masterbatch: 0.1 part;

[0096] The composite antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate: dioctadecyl thiodipropionate: 2-(2'-hydroxy-5'- The mass ratio of tertoctylphenyl) benzotriazole is the mixture of 1:2:0.5;

[0097] Put it into a high-speed kneader and mix at room temperature for 5 minutes. The uniformly mixed materials are poured into a high-temperature twin-screw extruder and extruded at a temperature of 390°C. Water-cooled strands are cut into pellets, and the water temperature is controlled at 40°C.

[0098] 2) Preparation of radiation crosslinked polyolefin

[0099] In parts by weight, take polyethylene substrate: 100 parts; composite...

Embodiment 3

[0109] 1) Prepare thin-wall extruded polyether ether ketone modified cable insulation material

[0110] In parts by weight, raw materials of polyetheretherketone PEEK, a nucleophilic substitution product: 100 parts; composite antioxidant: 2 parts; US Dow Corning RM4-7051 silicone powder: 3 parts; black masterbatch: 0.5 parts;

[0111] The composite antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate: dioctadecyl thiodipropionate: 2-(2'-hydroxyl-3', The mass ratio of 5'-bis(a,a-dimethylbenzyl)phenyl)benzotriazole is 1:3:0.3 mixture;

[0112] Put it into a high-speed kneader and mix at room temperature for 4 minutes. The uniformly mixed materials are poured into a high-temperature twin-screw extruder and extruded at a temperature of 370°C. The strands are water-cooled and pelletized, and the water temperature is controlled at 50°C.

[0113] 2) Preparation of radiation crosslinked polyolefin

[0114] In parts by weight, take polyethylene substrate: 100 par...

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Abstract

The invention relates to the field of a cable, and particularly to a coaxial cable for a nuclear power station. The cable comprises a conductor. A first insulating layer, a second insulating layer, a first woven shielding layer, a first inner sheath, a second woven shielding layer, a second inner sheath, a metal corrugated pipe and an outer sheath successively wrap the external surface of the conductor. The first insulating layer is made of a thin-wall extruded poly-ether-ether-ketone modified cable insulating material. The second insulating layer is made of radiating crosslinked polyolefin. The thickness ratio between the first insulating layer and the second insulating layer is 1:3-20. The coaxial cable satisfies a requirement for signal transmission among a reactor workshop neutron detector and a junction box and a through member and among an auxiliary workshop through member and a pre-amplifier and a signal processing cabinet in a Chinese third-generation nuclear power plant instrument system. Furthermore the coaxial cable satisfies a requirement for executing a safe function in a designed reference accident environment condition of the third-generation nuclear power plant.

Description

technical field [0001] The invention relates to the field of cable manufacturing, in particular to a coaxial cable for nuclear power plants. Background technique [0002] In 2008, the state formally approved the "Overall Implementation Plan for Major Special Projects of Large-scale Advanced Pressurized Water Reactor Nuclear Power Plants", and re-innovated on the basis of introducing, digesting and absorbing the world's most advanced third-generation nuclear power technology, and designed and built it with my country's independent intellectual property rights The large-scale advanced pressurized water reactor nuclear power plant demonstration project will form a series of advanced nuclear power plants with my country's own brand. The major project of large-scale advanced pressurized water reactor nuclear power plant is one of the 16 major scientific and technological projects determined to strive for breakthroughs in the next 15 years in the "National Medium and Long-Term Scie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/22H01B7/18H01B7/20H01B3/44H01B9/02H01B9/04
CPCH01B3/441H01B7/0216H01B7/1875H01B7/20H01B7/228H01B9/024H01B9/04
Inventor 蒲守林张立刚朱强中史佳麟蒋亚运洪启付张雷刘成伟夏同方崔媛媛
Owner CHANGZHOU BAYI CABLE
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