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Instrument cable for nuclear power station

A technology for instrument cables and nuclear power plants, applied in the field of cable applications, can solve the problems of general anti-radiation ability and general life, and achieve the effects of good immersion performance, good low-smoke halogen-free flame retardant performance, and good insulation.

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: both 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, and the service life is average
Its main disadvantages: no shielding layer, general anti-radiation ability and general lifespan

Method used

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  • Instrument cable for nuclear power station
  • Instrument cable for nuclear power station
  • Instrument cable for nuclear power station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, an instrumentation cable for nuclear power plants includes two core wires A3-1 and 4 twisted cores A5-1 filled with 4 pairs. Each core wire A3-1 is composed of two twisted conductors 1 with 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 copper wire braiding layer 8 and a sheath 9 are provided in sequence outside the cable core A5-1. The cable core A5-1 is wrapped around the cladding layer 6, the copper-plastic composite tape 7 is wrapped around the cladding layer 6, and the copper wire braided layer 8 is extruded and wrapped with a sheath 9.

[0032] 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, fl...

Embodiment 2

[0037] Such as figure 2 As shown, an instrumentation cable for nuclear power plants includes four core wires B3-2 and a filled 4-star twisted core B5-2. Each core wire B3-2 is composed of two twisted conductors 1 containing 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 on the outside of the cable core B5-2 in sequence. The cable core B5-2 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.

[0038] 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...

Embodiment 3

[0041] Such as image 3 As shown, an instrument cable for nuclear power plants includes four core wires C3-3 and a filled 4-star twisted core C5-3. Each core wire C3-3 is composed of four star-quad conductors 1 containing an insulating layer 2, and the insulating layer 2 is extruded on the conductors 1. A wrapping layer 6 , a copper-plastic composite tape 7 , a copper wire braiding layer 8 and a sheath 9 are provided in sequence outside the cable core C5-3. The cable core C5-3 is wrapped around the cladding layer 6, the copper-plastic composite tape 7 is wrapped around the cladding layer 6, and the copper wire braided layer 8 is extruded and wrapped with a sheath 9.

[0042] 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, fla...

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Abstract

The invention relates to an instrument cable, in particular to an instrument cable for a nuclear power station. According to the technical scheme, the instrument cable for the nuclear power station comprises at least two stranded conductors (1) with insulation layers (2), the insulation layers (2) are extruded on the conductors (1), the conductors (1) with the insulation layers (2) form at least two core wires (3-1, 3-2 and 3-3), the core wires (3-1, 3-2 and 3-3) and packing 4 are stranded into cable cores (5-1, 5-2 and 5-3), and a wrapping layer (6), a copper-plastic composite belt (7) a copper wire braided layer (8) and a sheath (9) wraps outside the cable cores (5-1, 5-2 and 5-3) sequentially. 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 DBA.

Description

technical field [0001] The invention relates to an instrument cable, in particular to an instrument cable for nuclear power plants, which is suitable for signal transmission cables with a rated voltage of 300 / 500V, such as analog images, etc., 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 construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/28H01B7/29H01B7/17
CPCY02A30/14
Inventor 王松明李斌梁福才凌国桢于雪芳潘冬雪
Owner JIANGSUSNGSHANG CABLE GROUP
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