CN201477966U - Cable for special nuclear power plant - Google Patents
Cable for special nuclear power plant Download PDFInfo
- Publication number
- CN201477966U CN201477966U CN2009201717232U CN200920171723U CN201477966U CN 201477966 U CN201477966 U CN 201477966U CN 2009201717232 U CN2009201717232 U CN 2009201717232U CN 200920171723 U CN200920171723 U CN 200920171723U CN 201477966 U CN201477966 U CN 201477966U
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- CN
- China
- Prior art keywords
- layer
- cable
- nuclear power
- insulation
- power plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a cable for a special nuclear power plant, which is characterized in that a composite structure is adopted for an insulation layer, the inner-layer insulation adopts radiated crosslinked polyethylene plastics with good electric performance and mechanical effect, and the outer-layer insulation adopts the low-smoke halogen-free inflaming-retardant polyolefin material. Compared with the prior art, the insulation layer of the original single-layer structure is made into double-layer composite structure, so the electric performance of the cable is better, the integral flame-retarding property is high, the anti-radiation performance is good, and different requirements of the nuclear power plant can be easily satisfied.
Description
Technical field
The utility model relates to the cable technology field, particularly relates to the construction of cable that uses in a kind of nuclear power station.
Background technology
Because the particularity of nuclear power station, wherein employed cable requires than higher, comprise performances such as the electric property, fire resistance (single testing vertical flammability and bunched burning test), smoke density performance (light transmittance) of cable, low smoke performance (conductivity and pH value) radioresistance amount, anti-high and low-temp wear out, individual layer IXPE and low-smoke halogen-free polyolefin all can not meet the demands simultaneously.
Summary of the invention
The present invention provides a kind of new solution for the problems referred to above.
The technical scheme that the utility model technical solution problem is adopted is:
The utility model heart yearn is by the outer extruded insulation layer of conductor, and insulating barrier adopts composite construction, and primary insulation adopts irridiation crosslinked polyethylene plastic; Outer layer insulation adopts low-smoke halide-free fireproof composite polyolefine material.
Compare with existing product, the present invention is by making two-layer composite with the insulating barrier of original single layer structure, makes the overall flame performance height of cable, and anti-radiation performance is good.
Description of drawings
Figure one is the cable sectional structure chart, and 11 is cable conductor, and 12 is the cable primary insulation, and 13 is external insulation, and 20 is lapping layer, and 30 is restrictive coating.
Embodiment
Cable core of the present invention is to be made of conductor extruded insulation layer, and insulating barrier adopts two-layer composite, and primary insulation adopts electric property and the reasonable irridiation crosslinked polyethylene plastic of mechanic effect, and outer layer insulation adopts low-smoke halide-free fireproof composite polyolefine material; Stranding is filled the wrapped glass fiber tape of low smoke and zero halogen material, and sheath adopts low-smoke halogen-free polyolefin.
According to cable specification difference, when primary insulation thickness was 0.3-2.0mm, it is best that mechanical performance of products and electric property reach, and when outer layer insulation thickness was 0.7-2.4mm, cable just can pass through single testing vertical flammability.
The gap has dustless mineral wool rope filler to fill around core, and behind the filler rounding, the wrapped glass fiber tape of lapping layer in its outside extrudes oversheath outside lapping layer.And oxygen barrier layer and steel-tape armouring layer (not shown) can be arranged also between lapping layer and restrictive coating.
Insulating material in the cable of the present invention is IXPE and low-smoke halide-free fireproof composite polyolefine material, and protective cover material is a low-smoke halide-free fireproof composite polyolefine material, has good anti-radiation property, has guaranteed the overall flame performance of product, is particularly suitable for nuclear power station and uses.
Claims (3)
1. extraordinary used in nuclear power station cable, comprise heart yearn, lapping layer, outer jacket, wherein heart yearn extrudes the double hyer insulation layer by the conductor outside and constitutes, and it is characterized in that the two-layer composite that described insulating barrier is made by internal layer IXPE material and outer low-smoke halide-free fireproof composite polyolefine material.
2. according to the described extraordinary used in nuclear power station cable of claim 1, it is characterized in that described primary insulation thickness is 0.3～2.0mm.
3. according to the described extraordinary used in nuclear power station cable of claim 1, it is characterized in that described outer layer insulation thickness is 0.7～2.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201717232U CN201477966U (en) | 2009-04-24 | 2009-04-24 | Cable for special nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201717232U CN201477966U (en) | 2009-04-24 | 2009-04-24 | Cable for special nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477966U true CN201477966U (en) | 2010-05-19 |
Family
ID=42414224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201717232U Expired - Fee Related CN201477966U (en) | 2009-04-24 | 2009-04-24 | Cable for special nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036862A (en) * | 2014-06-27 | 2014-09-10 | 江苏凯达电缆有限公司 | Single-core crosslinked polyethylene insulated power cable |
| CN104036864A (en) * | 2014-06-27 | 2014-09-10 | 江苏凯达电缆有限公司 | Novel overhead insulation power cable |
-
2009
- 2009-04-24 CN CN2009201717232U patent/CN201477966U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036862A (en) * | 2014-06-27 | 2014-09-10 | 江苏凯达电缆有限公司 | Single-core crosslinked polyethylene insulated power cable |
| CN104036864A (en) * | 2014-06-27 | 2014-09-10 | 江苏凯达电缆有限公司 | Novel overhead insulation power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140424 |