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Control cable for nuclear power station

A technology for controlling cables and nuclear power plants. It is applied in the direction of insulated cables, bendable cables, cables, etc. It can solve the problems of general service life, inability to cope with accidental high-temperature environments, and general radiation resistance, and achieve low-smoke, halogen-free, and good flame-retardant performance. , Excellent long-term heat aging resistance, good immersion performance

Inactive Publication Date: 2013-03-06
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantages: the first oxygen barrier layer and the second oxygen barrier layer are made of halogen-free low-smoke polyolefin wrapping tape and copper tape wrapping tape, the radiation resistance is average, the service life is average, and it cannot cope with the high temperature environment of accidents
Its main disadvantages: no shielding layer, average radiation resistance, average lifespan, unable to cope with accident high temperature environment

Method used

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  • Control cable for nuclear power station

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Embodiment

[0027] Such as figure 1 As shown, a control cable for nuclear power plants includes a cable core 5 formed by twisting a plurality of core wires 3 arranged in a circle and fillers 4 . Each core wire 3 is composed of a conductor 1 and an insulating layer 2 , and the insulating layer 2 is extruded on the conductor 1 . A wrapping layer 6 , a copper-plastic composite tape 7 , a braided layer of copper wire 8 and a sheath 9 are provided in sequence outside the cable core 5 . The cable core 5 is wrapped around the cladding layer 6 , the copper-plastic composite tape 7 is wrapped around the cladding layer 6 , and the sheath 9 is wrapped around the copper wire braided layer 8 .

[0028] Wherein: conductor 1 adopts tinned copper wire twisted structure. Filling 4 is preferably a low-smoke, halogen-free, flame-retardant filling strip. The braided layer of copper wire 8 is preferably a braided layer of tinned copper wire. The insulating layer 2 is preferably a low-smoke, halogen-free, ...

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Abstract

The invention relates to a control cable, in particular to a control cable for a nuclear power station. According to the technical scheme, the control cable for the nuclear power station comprises a plurality of core wires (3) composed of conductors (1) and insulation layers (2), the insulation layers (2) are extruded on the conductors (1), the core wires (3) arrayed on the circumference and packing are stranded into cable cores (5), a wrapping layer (6), a copper-plastic composite belt (7), a copper wire braided layer (8) and a sheath (9) are arranged outside the cable cores (5) sequentially, the wrapping layer (6) wraps the cable cores (5), the copper-plastic composite belt (7) wraps outside the wrapping layer (6), and the sheath (9) is extruded outside the copper wire braided layer (8). Therefore, the low-voltage power cable for the nuclear power station is high in long-term thermal aging resistance, nuclear radiation resistance, DBA (design basis accident) resistance and immersion performance after after DBA.

Description

technical field [0001] The invention relates to a control cable, in particular to a control cable for nuclear power plants, suitable for cables with a rated voltage of 0.6 / 1kV, and belongs to the technical field of cable applications. Background technique [0002] AP1000 is the most advanced third-generation nuclear power technology in the world. AP1000 is a single-stack two-loop unit with a design life of 60 years. The main safety system adopts passive design and is arranged in the containment. The containment has a double-layer structure, the outer layer is prestressed concrete, and the inner layer is steel plate structure. [0003] According to the national nuclear power medium and long-term development plan: by 2020, China's nuclear power installed capacity will account for about 7% of the total installed capacity of electric power, reaching 75 million kilowatts. That is: China will approve the construction of at least six million-kilowatt-class nuclear power units eac...

Claims

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Application Information

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IPC IPC(8): H01B7/295H01B7/28H01B7/04H01B7/17
CPCY02A30/14
Inventor 王松明李斌梁福才凌国桢于雪芳王丽萍
Owner JIANGSUSNGSHANG CABLE GROUP
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