CN103854781A - 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 PDF

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Publication number
CN103854781A
CN103854781A CN201410063326.9A CN201410063326A CN103854781A CN 103854781 A CN103854781 A CN 103854781A CN 201410063326 A CN201410063326 A CN 201410063326A CN 103854781 A CN103854781 A CN 103854781A
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high temperature
nuclear power
temperature resistant
layer
wire
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CN103854781B (en
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何邦飞
叶明茂
王考杭
康小代
俞林
张俊
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Anhui Huayuan Cable Group Co Ltd
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Anhui Huayuan Cable Group Co Ltd
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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

A kind of high temperature resistant 1E type used in nuclear power station K3 level cable
Technical field
The present invention relates to cable technology field, relate in particular to a kind of high temperature resistant 1E type used in nuclear power station K3 level cable.
Background technology
Along with industrial automation level improves constantly, the development of instrument and meter, to the temp measuring system of instrument and meter have higher requirement, temperature measuring device instrument environment of living in is comparatively severe, these performance index to compensating cable propose requirements at the higher level.
Generation Ⅲ nuclear power technology is that single heap is arranged two loop units, and 60 years designed lives, main safety system adopts non-active design, is arranged in containment, and containment is double-decker, and skin is prestressed concrete, and internal layer is steel plate structure.Due to particular job environment of nuclear power station, require very high to operational outfit.Conventional high temperature-resistant cable generally adopts high temperature plastics insulating material composite sheath at present, 180 DEG C of left and right of heatproof, and there is the shortcomings such as useful life is short, conductance is low, antioxygenic property is poor, the contact of electric point is perishable, easy aging, cannot meet instructions for use.The cable using in nuclear power station, on the electric property of common cable and the basis of mechanical performance, must possess the performances such as high temperature resistant, radioresistance and excellent shield effectiveness.For this reason, need a kind of heat-resisting quantity excellence, shield effectiveness is good, the 1E type cable for nuclear power station of long service life.
Summary of the invention
In order to solve the technical problem existing in background technology, the present invention proposes a kind of high temperature resistant 1E type used in nuclear power station K3 level cable, it is high temperature resistant, shielding property good, long service life, can under nuclear power station particular surroundings, use safety for a long time.
The high temperature resistant 1E type of the one used in nuclear power station K3 level cable that the present invention proposes, comprises multiple conductors; Each conductor comprises and is positioned at the wire at middle part and is coated on insulating barrier and the one side metallo-plastic composite band of wire outside, in one side metallo-plastic composite band, establishes drainage thread, and described insulating barrier adopts ETFE(ethylene-tetrafluoroethylene copolymer) material makes; Multiple conductors are twisted into cable core, at the outside coated lapping layer of described cable core, at the outside coated bimetallic woven shield of lapping layer, at the outside coated high temperature resistant winding layer of bimetallic woven shield, the outside coated restrictive coating of high temperature resistant winding layer, described high temperature resistant winding layer adopts carbon fiber tape to be entwined, and described restrictive coating adopts ETFE material to make.
Preferably, described high temperature resistant winding layer includes anisotropic flat graphite granule.
Preferably, described wire adopts many stranded the forming of nickel plating copper free wire.
Preferably, described one side metallo-plastic composite band adopts one side aluminium-plastic tape or single-side copper-plastic compound belt, and wherein metal level is inside, plastic layer towards outside.
Preferably, described drainage thread adopts tinned copper wire.
Preferably, described bimetallic woven shield adopts tinned copper wire and finer wire bimetallic braid, and its coverage rate is greater than 90%.
In the present invention, the insulating barrier outer cladding one side metallo-plastic composite band of conductor, metal level plays the effect of separated-shielding, and plastic layer plays protection conductor moisture-proof anticorrosive, prevents that the phenomenon of multipoint earthing from appearring in metal level simultaneously; In one side metallo-plastic composite bed, establish drainage thread, can ensure that cable has combined shielding effect, and be conducive to cable and carry out grounding; Adopt tinned copper wire and steel wire composite wire woven shield, tinned copper wire has ensured shield effectiveness, bimetallic material has increased the electromagnetic scope of shielding, together with one side metallo-plastic composite band, especially can ensure the requirement to shielding properties in nuclear power plant environment.At the outside carbon coated fabric strip of composite wire woven shield, greatly strengthen the heat-resisting ability of cable; Insulating barrier and oversheath adopt ETFE material to make, and strengthen heat-resisting quantity and the anti-radiation property of cable, are more applicable for nuclear power plant environment.
In preferred version of the present invention, wire adopts multiply nickel-clad copper skein silk to close and forms, and it does not melt at the above high temperature of 1000 degree, has ensured wire conductive capability at high temperature; Include anisotropic flat graphite granule at the high temperature resistant winding layer that adopts carbon fiber tape to be entwined, prevent that thus external high temperature is to cable core radiation, band absorbs waste heat simultaneously, reduces heat energy, thereby further promotes the heat-resisting ability of cable; Bimetallic woven shield adopts tinned copper wire and finer wire is metal knitted forms, and its coverage rate is greater than 90%, and tinned copper wire has ensured the shield effectiveness of screen, and the adding of steel wire, and has strengthened the mechanical performance of cable, is easy to load-bearing cable core in the time that cable hangs.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of high temperature resistant 1E type used in nuclear power station K3 level cable that proposes of the present invention.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of high temperature resistant 1E type used in nuclear power station K3 level cable that proposes of the present invention.
With reference to Fig. 1, the high temperature resistant 1E type of the one used in nuclear power station K3 level cable that the present invention proposes, comprises seven conductors 1.
Each conductor 1 is inner for adopting the many stranded wires that form 11 of nickel plating copper free wire, the outside coated insulation layer 12 of wire 11, and this insulating barrier 12 adopts reinforced ETFE material to make.The outside coated one side aluminium-plastic tapes 13 of insulating barrier 12, one side aluminium-plastic tape 13 aluminum metal layers are towards interior, plastic layer towards outside, and in establish tinned copper wire drainage thread 14.
Seven conductors 1 are twisted into cable core, at the outside coated lapping layer 2 of cable core, cable core are wrapped in together tightly, be convenient to the coated of exterior shield layer, restrictive coating etc.Weave at the outside coated tinned copper wire of lapping layer 2 and finer wire the screen 3 forming, its coverage rate is 95%.
The high temperature resistant winding layer 4 forming at the outside carbon coated Fiber Winding of screen 3, wherein carbon fiber tape includes anisotropic flat graphite granule, at the outside coated restrictive coating 5 that adopts reinforced ETFE material to make of high temperature resistant winding layer 4.
In the time that cable is worked under nuclear power plant environment, adopt multiply nickel-clad copper skein silk to close and form wire 11, it does not melt at the above high temperature of 1000 degree, ensures wire 11 conductive capability at high temperature.And, increase the high temperature resistant winding layer 4 that carbon fiber tape is entwined, further strengthen the high-temperature resistant result of cable.This is high temperature resistant, and winding layer 4 includes anisotropic flat graphite granule, prevents that thus external high temperature is to cable core radiation, and band absorbs waste heat simultaneously, reduces heat energy, thereby significantly promotes the heat-resisting ability of cable.Insulating barrier 12 and restrictive coating 5 all adopt reinforced ETFE material to make, this material has the advantages such as excellent insulation property, ageing-resistant performance, resistance to elevated temperatures, be particularly useful for using under nuclear power plant environment, realize the effect of high temperature resistant, the anti-irradiation of cable, long service life.
On the other hand; in each wire 1 outside, coated one side aluminium-plastic tape 13, plays the effect of sub-shield, and its aluminum metal layer plays the effect of the electromagnetic interference between shielded conductor 1; plastic layer protection conductor 1 moisture-proof anticorrosive prevents that the phenomenon of multipoint earthing from appearring in aluminum metal layer simultaneously.In one side aluminium-plastic tape 13, establish tinned copper wire drainage thread 14, can ensure that cable has combined shielding effect, and be conducive to cable and carry out grounding.And, composite wire woven shield 3 adopts tinned copper wire and finer wire braiding to form, its weight is lightweight compared with the vertical bag of copper strips, tinned copper wire has ensured the shield effectiveness of screen 3, bimetallic material has increased the electromagnetic scope of shielding, and adding of steel wire, be easy to load-bearing cable core in the time that cable hangs.In addition, bimetallic woven shield 3 is realized double layer screen together with one side aluminium-plastic tape 13, and protection cable core is not subject to external electromagnetic wave action.When this works cable under nuclear power plant environment, more applicable, there is excellent shield effectiveness.
Preferably, the reinforced ETFE material that insulating barrier 12 and restrictive coating 5 adopt comprises following component according to mass fraction: 50-65 part tetrafluoroethylene monomer, 30-40 part ethene (purity >99.9%), 10-15 part rare earth oxide, 10 parts of polymerizer F141b7,5-7 part inorganic peroxide, 2-3 part carbon fiber, 2-3 part glass fibre; Particularly, 60 parts of tetrafluoroethylene monomers, 40 parts of ethene (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 fibres.This reinforced ETFE material has advantages of that temperature range is wide, ageing-resistant, good insulating; Add rare earth oxide to play the effect of anti-irradiation; Carbon fiber and glass fibre add the mechanical strength that has strengthened ETFE material.Adopt this reinforced ETFE material, make that cable is heat-resisting, anticorrosion, resistance to wear is good, have anti-radiation performance, adopt the cable of this material to be particularly suitable for long-term in the particular surroundings of nuclear power station.
According to the high temperature resistant 1E type used in nuclear power station K3 level cable of the present embodiment, after testing, its electric pressure is 0.6/1kV; The result that withstand voltage test obtains is 3.5/5kV/min; Insulation resistance >=5000M Ω .km; It is 260 DEG C that conductor allows maximum operating temperature for a long time; The minimum median of dielectric strength is 30Mpa; Useful life >=60 year; Sample of cable is at 150 ± 2 DEG C, and after the thermal ageing test of 52 days time, then after the irradiation test that is 25 × 104GY through accumulated dose, sample does not ftracture after 20D bend test.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.

Claims (6)

1. a high temperature resistant 1E type used in nuclear power station K3 level cable, is characterized in that, comprises multiple conductors (1); Each conductor (1) comprises the insulating barrier (12) and the one side metallo-plastic composite band (13) that are positioned at the wire (11) at middle part and are coated on wire (11) outside, in one side metallo-plastic composite band (13), establish drainage thread (14), described insulating barrier (12) adopts ETFE material to make; Multiple conductors (1) are twisted into cable core, at the outside coated lapping layer (2) of described cable core, at the outside coated bimetallic woven shield (3) of lapping layer (2), at the outside coated high temperature resistant winding layer (4) of bimetallic woven shield (3), the outside coated restrictive coating (5) of high temperature resistant winding layer (4), described high temperature resistant winding layer (4) adopts carbon fiber tape to be entwined, and described restrictive coating (5) adopts ETFE material to make.
2. high temperature resistant 1E type used in nuclear power station K3 level cable according to claim 1, is characterized in that, described high temperature resistant winding layer (4) includes flat graphite granule.
3. high temperature resistant 1E type used in nuclear power station K3 level cable according to claim 1, is characterized in that, described wire (11) adopts many stranded the forming of nickel plating copper free wire.
4. high temperature resistant 1E type used in nuclear power station K3 level cable according to claim 1, is characterized in that, described one side metallo-plastic composite band (13) adopts one side aluminium-plastic tape or single-side copper-plastic compound belt, and wherein metal level is inside, plastic layer towards outside.
5. high temperature resistant 1E type used in nuclear power station K3 level cable according to claim 1, is characterized in that, described drainage thread (14) adopts tinned copper wire.
6. high temperature resistant 1E type used in nuclear power station K3 level cable according to claim 1, is characterized in that, described bimetallic woven shield (3) adopts tinned copper wire and finer wire wire sheathing, and its coverage rate is greater than 90%.
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Publication number Priority date Publication date Assignee Title
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
WO2020125337A1 (en) * 2018-12-19 2020-06-25 江苏中利集团股份有限公司 Copper wire and steel wire hybrid braided shielded armored 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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CN203826087U (en) * 2014-02-24 2014-09-10 安徽华源电缆集团有限公司 High-temperature-resistance 1E-type nuclear-power-station-used K3-grade cable

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2020125337A1 (en) * 2018-12-19 2020-06-25 江苏中利集团股份有限公司 Copper wire and steel wire hybrid braided shielded armored 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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Denomination of invention: High-temperature-resistant K-3-level cable used for 1E-type nuclear power plant

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