CN106531312A - Nuclear power plant cable and production method - Google Patents
Nuclear power plant cable and production method Download PDFInfo
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- CN106531312A CN106531312A CN201611221257.5A CN201611221257A CN106531312A CN 106531312 A CN106531312 A CN 106531312A CN 201611221257 A CN201611221257 A CN 201611221257A CN 106531312 A CN106531312 A CN 106531312A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 229920000098 polyolefin Polymers 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 21
- 230000005855 radiation Effects 0.000 claims abstract description 19
- 239000004642 Polyimide Substances 0.000 claims abstract description 18
- 229920001721 polyimide Polymers 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 229920000728 polyester Polymers 0.000 claims abstract description 5
- 230000004888 barrier function Effects 0.000 claims description 49
- 238000004132 cross linking Methods 0.000 claims description 23
- 239000003063 flame retardant Substances 0.000 claims description 16
- 239000004952 Polyamide Substances 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 235000009854 Cucurbita moschata Nutrition 0.000 claims description 3
- 240000001980 Cucurbita pepo Species 0.000 claims description 3
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 3
- 235000020354 squash Nutrition 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 231100000053 low toxicity Toxicity 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- -1 polyene Hydrocarbon Chemical class 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102100034409 DNA helicase B Human genes 0.000 description 1
- 101001066825 Homo sapiens DNA helicase B Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to the technical field of cables, and particularly relates to a nuclear power plant cable and a production method. The nuclear power plant cable sequentially comprises an insulating inner core, an inner sheath, a wrapping tape and an outer sheath from inside to outside, and the insulating inner core sequentially comprises a conductor, two insulating layers and a polyimide tape layer from inside to outside; the two insulating layers are separately a first insulating layer and a second insulating layer; the first insulating layer, the second insulating layer, the outer sheath and the inner sheath are all made of polyolefin; and the wrapping tape sequentially comprises a polyester tape layer, two halogen-free tape layers and a radiation semiconductive tape layer from inside to outside. Therefore, the nuclear power plant cable and the production method have the advantages of chemical spray resistance, high temperature resistance, fire resistance, electric insulation performance, low-smoke, halogen-free and low-toxicity performance, and the nuclear power plant cable can normally run for more than 60 years.
Description
Technical field
The present invention relates to field of cable technology, more particularly to a kind of cable for nuclear power station and production method.
Background technology
" No. Hua Longyi " is by Chinese Liang great nuclear power enterprises China National Nuclear Corporation (abbreviation:Center, CNNC) and in
Guo Guang cores group is (referred to as:In wide core, CGN) in the base of China's more than 30 years nuclear power scientific research, design, manufacture, construction and operating experience
On plinth, according to Fukushima nuclear accident Experience Feedback and China and global newest safety requirements, the advanced million kilowatt pressure of research and development
Water-water reactor nuclear power technology.As the leading brand of Chinese Nuclear Power " walking out ", in terms of design innovation, " No. Hua Longyi " proposition " energy
It is dynamic and passive combine " safe design theory, using the reactor core of 177 fuel assemblies, the safety of multiple redundancy
System, single heap arrangement, double containment, overall balance have implemented the design principle of " depth defense ", are provided with perfect serious
Accident prevention and mitigation strategy, its safety index and technical performance have reached the advanced level of international three generations's nuclear power technology；
No. Hua Longyi wisdom and painstaking effort for having condensed Chinese Nuclear Power builder, realize advanced and maturity unification,
The balance of safety and economy, active and passive combination, possess international competition comparative advantages, are expected to fill up in the short time
China technological gap, possesses the international competitive bidding condition of participation；Therefore for Hua Longyi cable for nuclear power station requirement also with
It is higher, in addition to meeting the requirement of AP1000, EPR nuclear power cable, also with extraordinary resistance to long term heat ageing performance, can
Normal operation more than 60 years, with the gamma-rays of resistance to high dose and Beta-ray irradiation behaviour, and cable possess chemically-resistant spray,
The performance such as high temperature resistant, fire-retardant, electrical insulation properties, low-smoke zero-halogen low-toxicity；
In containment, (containing the outer accident conditioned area of containment) cable main performance needs to meet following requirement：
1) electric pressure：0.6/1kV (low-voltage power, control cable)
2) electric pressure：300/500kV (measurement cable)
3) meet 60 years qualified lifes (IEEE 383-2003), and accident conditions can be undergone (in containment and outside shell)；
4) 60332-3-23 B class bunchy combustion requirements of IEC；
5) more than the γ dosage 275kGy under 60 years normal running (operation) conditions；
6) more than accident conditions γ dosage 140kGy；
7) more than accident conditions β dosage 885kGy；
8) 150 DEG C of maximum temperature under accident (in shell)；
9) maximum pressure 470kPa under accident；
10) relative humidity：100%；
11) soak after necessary accident pressure test；
12) the adeciduate integrity demands of sheath are kept during and after accident.
The content of the invention
It is an object of the invention to provide it is low to possess chemically-resistant spray, high temperature resistant, fire-retardant, electrical insulation properties, low smoke and zero halogen
The performances such as poison, and can normally run a kind of cable for nuclear power station and the production method of more than 60 years.
Technical scheme is as follows：
A kind of power cable for nuclear power plant, includes insulation inner core, inner sheath, twining package tape and oversheath from inside to outside successively,
Characterized in that, the insulation inner core includes conductor, dielectric layers and polyimides belt from inside to outside successively；The two-layer
Insulating barrier is respectively the first insulating barrier and the second insulating barrier；First insulating barrier, the second insulating barrier, oversheath and inner sheath are equal
Using polyolefin；The twining package tape includes polyester belt, two-layer Halogen belt and irradiation semiconductive belt from inside to outside successively.
First insulating barrier is cross-linking low-smoke halogen-free polyolefin, and the second insulating barrier is cross-linking low smoke halogen-free flame retardant polyene
Hydrocarbon.
The inner sheath thickness is 0.5-1.0mm.
The polyimides belt wrapping angle is 30-45 °.
The oversheath adopts irradiated crosslinking low-smoke and halogen-free flame retardant type polyolefin.
The polyimides belt is thin layer.
The polyolefin dosage is 2100kGy.
A kind of production method of power cable for nuclear power plant, it is characterised in that comprise the following steps successively；First in conductor
It is outer first, second insulating barrier is extruded by the way of double-layer coextrusion after carry out cross-linking radiation, then the second insulating barrier periphery around
Bag polyamide tape forms insulation inner core；Then distribution is carried out with insulation inner core, followed by twining package tape by the insulation after distribution
Inner core is wrapped into cable core；Then inner sheath is extruded outside the cable core of wrapped stranding using plsitive mold, then outside inner sheath
Extrude oversheath week and carry out cross-linking radiation.
First, second insulating barrier adopts half squash type double-layer coextrusion.
First insulating barrier is cross-linking low-smoke halogen-free polyolefin, and the second insulating barrier is cross-linking low smoke halogen-free flame retardant polyene
Hydrocarbon；The inner sheath thickness is 0.5-1.0mm；The polyimides belt wrapping angle is 30-45 °；The polyamide tape
Layer is thin layer.
The invention has the beneficial effects as follows：Using double hyer insulation, the first insulating barrier ensures the electric property of cable high-quality, second
Insulating barrier ensures the mechanical performance of cable, fire-retardant and radiation-resistant property；And after insulating exruded, select a kind of new polyamides
Imines band is wrapped over the second dielectric, both ensure that cable radiation-resistant property, can prevent the feelings insulated in long term heat ageing again
Stick together under condition；At the same time, one floor height performance inner sheath of extrusion molding is gone back, it is excellent that this structure is effectively guaranteed finished cable
The radiation-resistant property and fire resistance of matter.
Description of the drawings
By detailed description below in conjunction with the accompanying drawings, the aforesaid and other objects, features and advantages of the present invention will become
Obviously.
Wherein：Fig. 1 is schematic structural view of the invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is schematic structural view of the invention；
In accompanying drawing, 1 is insulation inner core, and 2 is inner sheath, and 3 is twining package tape, and 4 is oversheath, and 5 is conductor, and 6 is insulating barrier, 8
For polyimides belt, 9 is polyester belt, and 10 is Halogen belt, and 11 is irradiation semiconductive belt, and 12 are support compartmentation strip.
Specific embodiment
A kind of power cable for nuclear power plant, includes insulation inner core 1, inner sheath 2, twining package tape 3 and outer shield from inside to outside successively
Set 4, it is characterised in that the insulation inner core includes conductor 5, dielectric layers 6 and polyimides belt 8 from inside to outside successively；
The dielectric layers are respectively the first insulating barrier and the second insulating barrier；First insulating barrier, the second insulating barrier, oversheath and
Inner sheath adopts polyolefin；The twining package tape includes polyester belt 9, two-layer Halogen belt 10 and irradiation half from inside to outside successively
Conductive strip layers 11.Using double hyer insulation, the first insulating barrier ensures the electric property of cable high-quality, and the second insulating barrier ensures cable
Mechanical performance, fire-retardant and radiation-resistant property, after insulating exruded, have selected polyamide tape wrapped over the second dielectric, both
Make use of the radiation-resistant property which is good, it is ensured that cable radiation-resistant property, situation about insulating in long term heat ageing can be prevented again
Under stick together；At the same time, can be with effective grounding by arranging semiconductive belt, it is to avoid electronics is assembled outside the second insulating barrier
Cause insulation breakdown, insulating barrier can be effectively protected.
Polyimides belt main performance meets following requirement：
| Sequence number | Project | Require |
| 1 | Tensile strength/MPa | ≥21 |
| 2 | Elongation at break/% | ≥125 |
| 3 | Specific insulation/(Ω cm) | ≥1×1016 |
| 4 | Oxygen index (OI) | 48 |
| 5 | Chemical proofing | It is excellent |
| 6 | Radiation resistance/kGy | 4000 |
First insulating barrier is cross-linking low-smoke halogen-free polyolefin, and the second insulating barrier is cross-linking low smoke halogen-free flame retardant polyene
Hydrocarbon.Insulant need to meet high electrical property, high flame resistance, high-mechanical property, high water resistance energy, ageing properties, low cigarette without
Halogen low toxicity characteristic, it is necessary to the function of its regulation is continued executing with when design basis event LOCA/HELB occurs, this is to insulation material
Material, insulation system, expressing technique propose higher requirement；To ensure the technical requirements of the above, setting in insulating barrier simultaneously
Employ double-decker on meter, interior insulation (the first insulating barrier) material adopts irradiated crosslinking low-smoke and halogen-free polyolefin, external insulation (the
Two insulating barriers) material adopts irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin, ensures high electrical property by internal layer, and outer layer ensures high resistant
Combustion performance, ectonexine ensure high-mechanical property simultaneously.
Insulating barrier main performance meets following requirement：
The inner sheath thickness is 0.5-1.0mm.As inner sheath thickness is within the scope of 0.5-1.0mm, on the one hand
The performance of power cable can be effectively ensured, and the external diameter of power cable can be reduced so as to can extensively be made in more occasions
With on the other hand greatly reducing production cost.
The polyimides belt wrapping angle is 30-45 °.When polyamide tape is wrapped it is wrapped layer by layer between it is critical
Gather, it is docile, well-balanced around speed packet, Angle ambiguity is appropriate, which can be so effectively ensured and 25% have put up rate.
The chemical constitution of the polyimides belt is the repetition with aromatic imide and aryl oxide as unit.Polyimides
Chemical constitution is the repetition with aromatic imide and aryl oxide as unit, and with good radiation-resistant property, resistance to irradiation dose reaches
4000kGy, is required with the 2100kGy needed for cable far above in nuclear power station shell.
The oversheath adopts irradiated crosslinking low-smoke and halogen-free flame retardant type polyolefin.For oversheath is extruded, what we adopted
Irradiated crosslinking low-smoke and halogen-free flame retardant type polyolefin, compared with conventional polyolefine material, the radiation-resistant property of material, the life-span and
Mechanical performance has and largely improves, and one floor height performance inner sheath of extrusion molding, and this structure is effectively guaranteed
The radiation-resistant property and fire resistance of finished cable high-quality.
Cable cover(ing) main performance meets following requirement：
The polyimides belt is thin layer.Adopt thin layer to reduce production cost.
Support compartmentation strip 12 is provided between the insulation inner core, the support compartmentation strip is provided with places the recessed of insulation inner core
Fall into.Compartmentation strip is supported due to arranging between insulation inner core, on the one hand which can be avoided arbitrarily to send out with the position of fixed insulation inner core
It is raw to rotate, on the other hand can be spaced apart insulation inner core, it is to avoid friction, extend the service life of insulation inner core.
The support compartmentation strip adopts High-temperature-reselectric-insulation electric-insulation silicon rubber.Due to supporting compartmentation strip to adopt High-temperature-reselectric-insulation electric-insulation silicon rubber
The high temperature resistant and insulation effect between insulation inner core is greatly strengthen, even if the generation abrasion of a wherein bar insulation inner core also will not shadow
Ring another work.
The polyolefin dosage is 2100kGy.The polyolefin that current cable typically adopts 250kGy low dose of, but it is little
The polyolefin of dosage thermal life under harsh and unforgiving environments in shell is shorter, irradiation life is shorter, and the experiment for much not reaching K1 cables will
Ask, when polyolefin dosage adopts 2100kGy, the requirement of experiment of K1 cables, and irradiation life, thermal life can not only be reached
It is greatly improved.
The support compartmentation strip adopts flame-resistant high-temperature-resistant electrically insulating silicone rubber.Due to supporting compartmentation strip to adopt high-temperature insulation silicon
Rubber greatly strengthen insulation inner core between high temperature resistant, fire-retardant and insulation effect, even if a wherein bar insulation inner core occur mill
Damage does not interfere with another work yet.
A kind of production method of power cable for nuclear power plant, it is characterised in that comprise the following steps successively；First in conductor
It is outer first, second insulating barrier is extruded by the way of double-layer coextrusion after carry out cross-linking radiation, then the second insulating barrier periphery around
Bag polyamide tape forms insulation inner core；Then distribution is carried out with insulation inner core, followed by twining package tape by the insulation after distribution
Inner core is wrapped into cable core；Then inner sheath is extruded outside the cable core of wrapped stranding using plsitive mold, then outside inner sheath
Extrude oversheath week and carry out cross-linking radiation.Insulating barrier (first, second insulating barrier) is by the way of double-layer coextrusion outside conductor
Extruded insulation layer, is more convenient the extrusion of dielectric layers；It is due to having selected polyamide tape wrapped over the second dielectric, both sharp
With its good radiation-resistant property, it is ensured that cable radiation-resistant property, can prevent from again insulating in the case of long term heat ageing
Stick together；Can be good at ensureing expansion and contraction, intensity and the ageing resistace of insulating barrier by twining package tape；At the same time interior shield
In set extrusion, extruded using plsitive mold, purpose makes inner sheath closely be wrapped on cable core, improves anti-flammability
Energy；And by above-mentioned material selection and the guarantee of technique, when being tested, crust performance is very superior for cable, effectively protects
The framing structure of whole cable of card.
First, second insulating barrier adopts half squash type double-layer coextrusion.The is extruded by the way of due to extruding using half
First, the second insulating barrier avoids the generation of cable core surface convex surface, affects product quality.
First insulating barrier is cross-linking low-smoke halogen-free polyolefin, and the second insulating barrier is cross-linking low smoke halogen-free flame retardant polyene
Hydrocarbon；The inner sheath thickness is 0.5-1.0mm；The polyimides belt wrapping angle is 30-45 °；The polyamide tape
Layer is thin layer.
The above, is only presently preferred embodiments of the present invention, not does any pro forma restriction to the present invention, it is every according to
According to any simple modification, equivalent variations made to above example in technical spirit of the invention, the guarantor of the present invention is each fallen within
Within the scope of shield.
Claims (10)
1. a kind of power cable for nuclear power plant, includes insulation inner core, inner sheath, twining package tape and oversheath from inside to outside successively, its
It is characterised by, the insulation inner core includes conductor, dielectric layers and polyimides belt from inside to outside successively；The two-layer is exhausted
Edge layer is respectively the first insulating barrier and the second insulating barrier；First insulating barrier, the second insulating barrier, oversheath and inner sheath are adopted
Use polyolefin；The twining package tape includes polyester belt, two-layer Halogen belt and irradiation semiconductive belt from inside to outside successively.
2. a kind of power cable for nuclear power plant according to claim 1, it is characterised in that first insulating barrier is crosslinking
Low-smoke halogen-free polyolefin, the second insulating barrier are cross-linking low smoke halogen-free fire retardant polyolefin.
3. a kind of power cable for nuclear power plant according to claim 1, it is characterised in that the inner sheath thickness is 0.5-
1.0mm。
4. a kind of power cable for nuclear power plant according to claim 1, it is characterised in that the polyimides belt is wrapped
Angle is 30-45 °.
5. a kind of power cable for nuclear power plant according to claim 1, it is characterised in that the oversheath is handed over using irradiation
Connection low-smoke halogen-free flame retardant polyolefin.
6. a kind of power cable for nuclear power plant according to claim 1, it is characterised in that the polyimides belt is thin
Film layer.
7. a kind of power cable for nuclear power plant according to 1,2,5 any one of claim, it is characterised in that the polyolefin
Dosage is 2100kGy.
8. a kind of production method of power cable for nuclear power plant, it is characterised in that comprise the following steps successively；First outside conductor
Cross-linking radiation is carried out after first, second insulating barrier is extruded by the way of double-layer coextrusion, it is then wrapped in the second insulating barrier periphery
Polyamide tape forms insulation inner core；Then distribution is carried out with insulation inner core, followed by twining package tape by the insulation after distribution
Core is wrapped into cable core；Then inner sheath is extruded outside the cable core of wrapped stranding using plsitive mold, then in inner sheath periphery
Extrusion oversheath simultaneously carries out cross-linking radiation.
9. the production method of a kind of power cable for nuclear power plant according to claim 8, it is characterised in that described first,
Second insulating barrier adopts half squash type double-layer coextrusion.
10. the production method of a kind of power cable for nuclear power plant according to claim 8, it is characterised in that described first
Insulating barrier is cross-linking low-smoke halogen-free polyolefin, and the second insulating barrier is cross-linking low smoke halogen-free fire retardant polyolefin；The inner sheath thickness
For 0.5-1.0mm；The polyimides belt wrapping angle is 30-45 °；The polyimides belt is thin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221257.5A CN106531312A (en) | 2016-12-26 | 2016-12-26 | Nuclear power plant cable and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221257.5A CN106531312A (en) | 2016-12-26 | 2016-12-26 | Nuclear power plant cable and production method |
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| CN106531312A true CN106531312A (en) | 2017-03-22 |
Family
ID=58338948
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| CN201611221257.5A Pending CN106531312A (en) | 2016-12-26 | 2016-12-26 | Nuclear power plant cable and production method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920591A (en) * | 2017-05-11 | 2017-07-04 | 南京全信传输科技股份有限公司 | Nuclear power equipment is crosslinked rubber insulation radiation resistant cable with low-smoke non-halogen flame-retardant |
| CN107134303A (en) * | 2017-06-22 | 2017-09-05 | 安徽电缆股份有限公司 | Instrument cable for nuclear power station |
| CN107134307A (en) * | 2017-06-22 | 2017-09-05 | 安徽电缆股份有限公司 | Compensating cable used for nuclear power station |
| CN107230530A (en) * | 2017-06-22 | 2017-10-03 | 安徽电缆股份有限公司 | Control cable for nuclear power station |
| CN107230528A (en) * | 2017-06-22 | 2017-10-03 | 安徽电缆股份有限公司 | Floating nuclear power plant cable |
| CN107248428A (en) * | 2017-06-22 | 2017-10-13 | 安徽电缆股份有限公司 | Environment-friendly type power cable |
| CN107342135A (en) * | 2017-06-22 | 2017-11-10 | 安徽电缆股份有限公司 | Low-voltage electric power cable used for nuclear |
| CN112309628A (en) * | 2020-09-27 | 2021-02-02 | 新亚特电缆股份有限公司 | Cable for nuclear power station |
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Cited By (8)
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| CN106920591A (en) * | 2017-05-11 | 2017-07-04 | 南京全信传输科技股份有限公司 | Nuclear power equipment is crosslinked rubber insulation radiation resistant cable with low-smoke non-halogen flame-retardant |
| CN107134303A (en) * | 2017-06-22 | 2017-09-05 | 安徽电缆股份有限公司 | Instrument cable for nuclear power station |
| CN107134307A (en) * | 2017-06-22 | 2017-09-05 | 安徽电缆股份有限公司 | Compensating cable used for nuclear power station |
| CN107230530A (en) * | 2017-06-22 | 2017-10-03 | 安徽电缆股份有限公司 | Control cable for nuclear power station |
| CN107230528A (en) * | 2017-06-22 | 2017-10-03 | 安徽电缆股份有限公司 | Floating nuclear power plant cable |
| CN107248428A (en) * | 2017-06-22 | 2017-10-13 | 安徽电缆股份有限公司 | Environment-friendly type power cable |
| CN107342135A (en) * | 2017-06-22 | 2017-11-10 | 安徽电缆股份有限公司 | Low-voltage electric power cable used for nuclear |
| CN112309628A (en) * | 2020-09-27 | 2021-02-02 | 新亚特电缆股份有限公司 | Cable for nuclear power station |
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Application publication date: 20170322 |
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