CN103854781B - High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant - Google Patents
High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant Download PDFInfo
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- CN103854781B CN103854781B CN201410063326.9A CN201410063326A CN103854781B CN 103854781 B CN103854781 B CN 103854781B CN 201410063326 A CN201410063326 A CN 201410063326A CN 103854781 B CN103854781 B CN 103854781B
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Abstract
The invention discloses a high-temperature-resistant K-3-level cable used for a 1E-type nuclear power plant. The high-temperature-resistant K-3-level cable used for the 1E-type nuclear power plant comprises a plurality of conductors. Each conductor comprises a guide line in the middle, an insulation layer and a single-faced metal plastic composite strip, wherein the guide line is wrapped with the insulation layer and the single-faced metal plastic composite strip; a guide wire is arranged inside the single-faced metal plastic composite strip; the insulation layer is made of ETFE materials. The conductors are twisted to be a cable core; the cable core is wrapped with a wrapping layer; the wrapping layer is wrapped with a double-metal braiding shielding layer; the double-metal braiding shielding layer is wrapped with a high-temperature-resistant winding layer; the high-temperature-resistant winding layer is wrapped with a sheath layer and is formed by winding carbon fiber strips; the sheath layer is made of ETFE materials. The high-temperature-resistant K-3-level cable used for the 1E-type nuclear power plant is good in high temperature resistance and radiation protection performance, is long in service life and can be used safely under the special environment of the nuclear power plant for a long time.
Description
Technical field
The present invention relates to field of cable technology, more particularly to a kind of high temperature resistant 1E type used in nuclear power station K3 level cables.
Background technology
As industrial automation level is improved constantly, the continuous development of instrument and meter is carried to the temp measuring system of instrument and meter
Gone out higher requirement, temperature measuring device instrument local environment more severe, this performance indications to compensating cable propose it is higher will
Ask.
Generation Ⅲ arranges two loop units for single heap, and 60 years projected lives, main security system adopts non-energy
Dynamic design, is arranged in containment, and containment is double-decker, and outer layer is prestressed concrete, and internal layer is steel plate structure.Due to
Particular job environment of nuclear power station is very high to running equipment requirements.At present conventional high temperature-resistant cable typically adopts high temperature plasticses
Insulant composite sheath, 180 DEG C or so of heatproof, and have that service life is short, conductivity is low, antioxygenic property is poor, electrical point
Contact is perishable, the shortcomings of easily aging, it is impossible to meet use requirement.Electrical resistance of the cable used in nuclear power station in common cable
On the basis of energy and mechanical performance, it is necessary to possess the performances such as high temperature resistant, radioprotective and excellent shield effectiveness.For this reason, it may be necessary to
A kind of heat-resisting quantity is excellent, and shield effectiveness is good, the 1E type cable for nuclear power station of long service life.
The content of the invention
In order to solve technical problem present in background technology, the present invention proposes a kind of high temperature resistant 1E type used in nuclear power station K3
Level cable, its high temperature resistant, shielding property are good, long service life, can be for a long time under nuclear power station special environment using safety.
A kind of high temperature resistant 1E type used in nuclear power station K3 level cables proposed by the present invention, including multiple conductors；Each conductor includes
Positioned at the wire and the insulating barrier that is coated on outside wire and one-sided metallic plastics composite band at middle part, one-sided metallic plastics are combined
Drainage thread is set with interior, the insulating barrier adopts ETFE（Ethylene-tetrafluoroethylene copolymer）Material is made；By multiple conductor strands into
Cable core, outside the cable core lapping layer is coated, and bimetallic woven shield is coated outside lapping layer, is shielded in bimetallic braiding
Layer outside cladding high temperature resistant winding layer, high temperature resistant winding layer outside cladding restrictive coating are covered, the high temperature resistant winding layer is fine using carbon
Dimension band winding is formed, and the restrictive coating is made using ETFE materials.
Preferably, the high temperature resistant winding layer includes anisotropic flat graphite granule.
Preferably, the wire is formed using many nickel plating copper free wires are stranded.
Preferably, the one-sided metallic plastics composite band adopts one side aluminium-plastic tape or single-side copper-plastic compound belt, wherein
Inwardly, plastic layer is faced out metal level.
Preferably, the drainage thread adopts tinned copper wire.
Preferably, the bimetallic woven shield is using tinned copper wire and finer wire bimetallic braiding layer, its coverage rate
More than 90%.
In the present invention, the insulating barrier outer cladding one-sided metallic plastics composite band of conductor, metal level plays a part of separated-shielding,
Plastic layer plays protection conductor moisture-proof anticorrosive, while preventing metal level from the phenomenon of multipoint earthing occur；One-sided metallic plastics are combined
Drainage thread is set in layer, it is ensured that cable has combined shielding effect, and is conducive to cable to carry out grounding；Using tinned copper wire
With steel wire composite wire woven shield, tinned copper wire ensure that shield effectiveness, and bimetallic material increases shielding electromagnetic wave
Scope, together with one-sided metallic plastics composite band, enables in particular to ensure in nuclear power plant environment to the requirement of shielding propertiess.Double
Metal wire knitted screen layer outside cladding carbon fiber tape, greatly enhances the heat-resisting ability of cable；Insulating barrier and oversheath are adopted
ETFE materials are made, and strengthen the heat-resisting quantity and Flouride-resistani acid phesphatase of cable, are more applicable for nuclear power plant environment.
In the preferred version of the present invention, wire is formed using multiply nickel plating copper wire is stranded, and it is in 1000 degree of high temperature above
It is non-fusible, it is ensured that wire conductive capability at high temperature；Include in the high temperature resistant winding layer being entwined using carbon fiber tape
Anisotropic flat graphite granule, thus prevents external high temperature from radiating to cable core, while band absorbs waste heat, reduces heat
Can, so as to further lift the heat-resisting ability of cable；Bimetallic woven shield is compiled using tinned copper wire with finer wire metal
Knit and form, its coverage rate is more than 90%, and tinned copper wire ensure that the shield effectiveness of screen layer, and the addition of steel wire, enhance electricity
The mechanical performance of cable, it is easy to the load-bearing cable core when cable hangs.
Description of the drawings
Fig. 1 is a kind of structural representation of high temperature resistant 1E type used in nuclear power station K3 level cables proposed by the present invention.
Specific embodiment
As shown in figure 1, Fig. 1 is a kind of structural representation of high temperature resistant 1E type used in nuclear power station K3 level cables proposed by the present invention
Figure.
With reference to Fig. 1, a kind of high temperature resistant 1E type used in nuclear power station K3 level cables proposed by the present invention, including seven conductors 1.
It is that, using the stranded wire 11 of many nickel plating copper free wires, the outside of wire 11 cladding is exhausted inside each conductor 1
Edge layer 12, the insulating barrier 12 is made using reinforced ETFE materials.The outside of insulating barrier 12 coats one side aluminium-plastic tape 13, one side
The aluminum metal layer of aluminium-plastic tape 13 is inward-facing, and plastic layer is faced out, and interior sets tinned copper wire drainage thread 14.
Seven conductors 1 are twisted into into cable core, lapping layer 2 is coated outside cable core, cable core is tightly wrapped together, just
In the cladding of exterior shield layer, restrictive coating etc..The screen layer of tinned copper wire and finer wire braiding is coated outside lapping layer 2
3, its coverage rate is 95%.
In the high temperature resistant winding layer 4 that the outside carbon coated Fiber Winding of screen layer 3 is formed, wherein carbon fiber tape include it is each to
The flat graphite granule of the opposite sex, cladding adopts restrictive coating 5 made by reinforced ETFE materials outside high temperature resistant winding layer 4.
When cable works under nuclear power plant environment, wire 11 is formed using multiply nickel plating copper wire is stranded, it is at 1000 degree
High temperature above is non-fusible, it is ensured that the conductive capability at high temperature of wire 11.Also, increased the resistance to height that carbon fiber tape is entwined
Warm winding layer 4, further enhances the high-temperature resistant result of cable.The high temperature resistant winding layer 4 includes anisotropic flat graphite
Grain, thus prevents external high temperature from radiating to cable core, while band absorbs waste heat, heat energy is reduced, so as to significantly lift electricity
The heat-resisting ability of cable.Insulating barrier 12 and restrictive coating 5 are made using reinforced ETFE materials, and this material has excellent exhausted
The advantages of edge performance, ageing-resistant performance, resistance to elevated temperatures, be particularly suited for being used under nuclear power plant environment, realize cable high temperature resistant,
The effect of Flouride-resistani acid phesphatase, long service life.
On the other hand, one side aluminium-plastic tape 13 is coated outside each wire 1, plays a part of sub-shield, its
Aluminum metal layer plays a part of the electromagnetic interference between shielded conductor 1, the plastic layer protection moisture-proof anticorrosive of conductor 1, while preventing aluminum
There is the phenomenon of multipoint earthing in metal level.Tinned copper wire drainage thread 14 is set in one side aluminium-plastic tape 13, it is ensured that cable has
There is combined shielding effect, and be conducive to cable to carry out grounding.Also, composite wire woven shield 3 adopts tinned copper wire
Form with finer wire braiding, its weight is lightweight compared with the vertical bag of copper strips, and tinned copper wire ensure that the shield effectiveness of screen layer 3, double gold
Category material increases the scope of shielding electromagnetic wave, and the addition of steel wire, it is easy to the load-bearing cable core when cable hangs.Additionally, double
Metal knitted screen layer 3 realizes double layer screen together with one side aluminium-plastic tape 13, protects cable core not receive external electromagnetic wave action.
When this causes cable to work under nuclear power plant environment, more it is suitable for, with excellent shield effectiveness.
Preferably, the reinforced ETFE materials that insulating barrier 12 and restrictive coating 5 are adopted are according to mass fraction comprising following
Component：50-65 part tetrafluoroethylene monomers, 30-40 part ethylene（Purity>99.9%）, 10-15 part rare earth oxides, 10 parts of polymerizers
F141b7,5-7 part inorganic peroxide, 2-3 part carbon fibers, 2-3 part glass fibre；Specifically, 60 parts of tetrafluoroethylene monomers, 40
Part ethylene（Purity>99.9%）, 15 parts of rare earth oxides, 10 parts of polymerizer F141b7,5 parts of inorganic peroxides, 2 parts of carbon fibers,
3 parts of glass fibre.This reinforced ETFE materials have the advantages that temperature range width, ageing-resistant, good insulating；Add rare earth oxygen
Compound plays a part of Flouride-resistani acid phesphatase；The addition of carbon fiber and glass fibre enhances the mechanical strength of ETFE materials.Using this
Reinforced ETFE materials, make heat-resisting cable, anti-corrosion, wearability it is good, with anti-radiation performance, using this material cable especially
It is suitable for long-term in the special environment of nuclear power station.
According to the high temperature resistant 1E type used in nuclear power station K3 level cables of the present embodiment, after testing, its electric pressure is 0.6/1kV；
The result that pressure test is obtained is 3.5/5kV/min；Insulation resistance >=5000M Ω .km；Conductor allows for a long time maximum operating temperature
For 260 DEG C；Dielectric strength minimum intermediate value is 30Mpa；Service life >=60 year；At 150 ± 2 DEG C of sample of cable Jing, the time 52
After it thermal aging test, then after accumulated dose is for the irradiation test of 25 × 104GY, sample is not opened after 20D bend tests
Split.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (5)
1. a kind of high temperature resistant 1E type used in nuclear power station K3 level cables, it is characterised in that including multiple conductors (1)；Each conductor (1) bag
Include positioned at middle part wire (11) and be coated on the outside insulating barrier (12) of wire (11) and one-sided metallic plastics composite band
(13), drainage thread (14) is set in one-sided metallic plastics composite band (13), the insulating barrier (12) is made using ETFE materials；To be many
Individual conductor (1) is twisted into cable core, and lapping layer (2) is coated outside the cable core, the cladding bimetallic braiding outside lapping layer (2)
Screen layer (3), the outside bag of cladding high temperature resistant winding layer (4), high temperature resistant winding layer (4) outside bimetallic woven shield (3)
Restrictive coating (5) is covered, the high temperature resistant winding layer (4) is entwined using carbon fiber tape, and the restrictive coating (5) is using ETFE materials
Make；The one-sided metallic plastics composite band (13) is using one side aluminium-plastic tape or single-side copper-plastic compound belt, wherein metal level
Inward-facing, plastic layer is faced out；The ETFE materials include following raw materials according according to mass fraction：50-65 part tetrafluoroethylene monomers,
30-40 part purity>99.9% ethylene, 10-15 part rare earth oxides, 10 parts of polymer grade F141b, 5-7 part inorganic peroxides,
2-3 part carbon fibers, 2-3 part glass fibre.
2. high temperature resistant 1E type used in nuclear power station K3 level cables according to claim 1, it is characterised in that the high temperature resistant winding
Layer (4) includes flat graphite granule.
3. high temperature resistant 1E type used in nuclear power station K3 level cables according to claim 1, it is characterised in that the wire (11) is adopted
Formed with many nickel plating copper free wires are stranded.
4. high temperature resistant 1E type used in nuclear power station K3 level cables according to claim 1, it is characterised in that the drainage thread (14)
Using tinned copper wire.
5. high temperature resistant 1E type used in nuclear power station K3 level cables according to claim 1, it is characterised in that the bimetallic braiding
Screen layer (3) is more than 90% using tinned copper wire and finer wire wire sheathing, its coverage rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410063326.9A CN103854781B (en) | 2014-02-24 | 2014-02-24 | High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant |
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| CN201410063326.9A CN103854781B (en) | 2014-02-24 | 2014-02-24 | High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant |
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| CN103854781B true CN103854781B (en) | 2017-05-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104103356A (en) * | 2014-06-26 | 2014-10-15 | 安徽华通电缆集团有限公司 | Silver-copper alloy conductor cable for aerospace |
| CN105788706A (en) * | 2016-04-25 | 2016-07-20 | 中国电子科技集团公司第二十三研究所 | Aerospace-used star quad communication cable and manufacturing method thereof |
| CN108630344A (en) * | 2018-03-29 | 2018-10-09 | 浙江工业大学之江学院 | A kind of tensile wear-resistant carbon fiber cable |
| CN209183297U (en) * | 2018-12-19 | 2019-07-30 | 江苏中利集团股份有限公司 | A kind of copper wire steel wire mixed weaving shield cable |
| CN114709018A (en) * | 2022-03-21 | 2022-07-05 | 河南乐山电缆有限公司 | Flexible high-temperature-resistant fire-resistant control cable and preparation method thereof |
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| CN102956304A (en) * | 2011-08-24 | 2013-03-06 | 上海漕泾热电有限责任公司 | High-temperature-resistant cable |
| CN203300305U (en) * | 2013-04-22 | 2013-11-20 | 无锡工艺职业技术学院 | Strong flame retardant and anti-interference power cable for 1E class K3 nuclear power plant |
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| CN201256016Y (en) * | 2008-09-18 | 2009-06-10 | 常州市新东方电缆有限公司 | Fire-retarding electric cable for 1E stage K3 class nuclear power plant |
| CN201965976U (en) * | 2010-12-30 | 2011-09-07 | 安徽新亚特电缆集团有限公司 | Instrument cable for nuclear power station |
| CN102956304A (en) * | 2011-08-24 | 2013-03-06 | 上海漕泾热电有限责任公司 | High-temperature-resistant cable |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant Effective date of registration: 20181229 Granted publication date: 20170510 Pledgee: Anhui inaction rural commercial bank Limited by Share Ltd Pledgor: Anhui Huayuan Cable Group Co., Ltd. Registration number: 2018340000789 |
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Date of cancellation: 20200508 Granted publication date: 20170510 Pledgee: Anhui inaction rural commercial bank Limited by Share Ltd Pledgor: ANHUI HUAYUAN CABLE GROUP Co.,Ltd. Registration number: 2018340000789 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant Effective date of registration: 20200527 Granted publication date: 20170510 Pledgee: Anhui inaction rural commercial bank Limited by Share Ltd. Pledgor: ANHUI HUAYUAN CABLE GROUP Co.,Ltd. Registration number: Y2020980002545 |
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