CN103000280B - Core rod wire and facture thereof is electrically run through for nuclear power generating equipment - Google Patents
Core rod wire and facture thereof is electrically run through for nuclear power generating equipment Download PDFInfo
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- CN103000280B CN103000280B CN201110273889.7A CN201110273889A CN103000280B CN 103000280 B CN103000280 B CN 103000280B CN 201110273889 A CN201110273889 A CN 201110273889A CN 103000280 B CN103000280 B CN 103000280B
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Abstract
The present invention relates to and a kind of electrically run through core rod wire for nuclear power generating equipment, it is characterised in that: the Surface coating of conductor has thin dielectric film, and thin dielectric film adopts polyimides (PI) resin film to make.In enforcement, high-purity catholyte copper conductor is carried out surface special handling, use special purpose packet coating equipment that the dielectric film having special property is passed through continuous multilayer, every layer keeps prescribed distance uniform close to be coated on around conductor, then again through special baking device and special production technology, bakee through high temperature so that dielectric film is sintered in around conductor, form a kind of seamless thin dielectric film and be eventually fabricated and electrically run through core rod wire for nuclear power generating equipment.This is bright have high temperature resistant, high pressure resistant. the physicochemical properties such as corrosion-resistant, resistance to radioprotective.Can guarantee that electrical penetration can bear the nitrogen pressure experimental enviroment of 3.5bar, reach good sealing.Whole generation technique is simple simultaneously, less costly.
Description
Technical field
The present invention relates to the technical field of electrical penetration, specifically a kind of electrically run through core rod wire and facture thereof for nuclear power generating equipment.
Background technology
Electrical penetration is to link up electrical link inside and outside containment, information communication in fixed Nuclear power plant, it is prevented that the important electric utility of last one barrier that radioactive substance is revealed.Must, under the normal of Nuclear power plant and emergency conditions, all should be able to bearing by the function of design code, it can keep the continuity of the sealing of nuclear reactor safety shell pressure boundary, the integrity of electric lead traverse and electric signal installing in life span.It is defined as nuclear safety 1E level, the electrical equipment of quality Q A1 level by specification.The core rod wire of existing domestic production, characteristic due to its structure and technique, the data that product draws in the correlation test such as high temperature resistant, ageing-resistant, high pressure resistant all cannot meet the technology requirement of used in nuclear power station electrical penetration, therefore the existing whole dependence on import of used in nuclear power station electrical penetration.
Summary of the invention
What it is an object of the invention to provide a kind of improvement electrically runs through core rod wire and facture thereof for nuclear power generating equipment, it can overcome the data that product in prior art draws in the correlation test such as high temperature resistant, ageing-resistant, high pressure resistant all cannot meet the technology requirement of used in nuclear power station electrical penetration, the some shortcomings that structural manufacturing process is complicated simultaneously, production cost is higher.
To achieve these goals, the technical scheme is that and electrically run through core rod wire for nuclear power generating equipment, it mainly includes conductor, it is characterised in that: the Surface coating of conductor has thin dielectric film, and thin dielectric film adopts polyimides (PI) resin film to make.
The manufacture method electrically running through core rod wire for nuclear power generating equipment, it is characterised in that: described manufacture method comprises the steps: a, adopts highly purified catholyte copper rod as conductor, and conductive surface is processed；Conductor after b, process, is placed in continuous automatic film coating unit, and conductive surface is coated with thin dielectric film, and the thickness of thin dielectric film is be more than or equal to 0.4mm；C, add after sintering aid at film surface, put into curing range and thin dielectric film is sintered；D, detection sintering quality, and pack warehouse-in.
During use, high-purity catholyte copper conductor is carried out surface special handling by the present invention, use special purpose packet coating equipment that the dielectric film having special property is passed through continuous multilayer, every layer keeps prescribed distance uniform close to be coated on around conductor, then again through special baking device and special production technology, bakee through high temperature so that dielectric film is sintered in around conductor, form a kind of seamless thin dielectric film and be eventually fabricated and electrically run through core rod wire for nuclear power generating equipment.The present invention has high temperature resistant, high pressure resistant. the physicochemical properties such as corrosion-resistant, resistance to radioprotective, it is also equipped with good tensile strength-thermal aging resistance property and dielectric breakdown strength-thermal ageing properties.Can guarantee that electrical penetration can bear the nitrogen pressure experimental enviroment of 3.5bar, reach good sealing, play and strengthen, in power plant's accidental pressure, the abnormal conditions being also unlikely to occur radioprotective leakage.Whole generation technique is simple simultaneously, less costly.
Accompanying drawing explanation
Fig. 1 is structural representation during conductive surface of the present invention cladding thin film.
Fig. 2 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The invention mainly comprises conductor 1, its difference with the prior art is in that: the Surface coating of conductor has thin dielectric film 2, thin dielectric film adopts polyimides (PI) resin film to make, conductor adopts purity catholyte copper rod more than 99.95%, and the line of current Kapton cladding advises following AWG6, AWG4, AWG2, AWG1/0, AWG2/0, AWG3/0, AWG4/0, MCM250, MCM350, MCM500, MCM750, MCM1000.The conductor margin of tolerance of each line rule is +/-1%* (conductor nominal diameter scope).Conductor adopts purity catholyte copper rod more than 99.95%, and the thickness of thin dielectric film is be more than or equal to 0.4mm.
Described manufacture method comprises the steps: a, adopts highly purified catholyte copper rod as conductor, and conductive surface is processed；Conductor after b, process, is placed in continuous automatic film coating unit, and conductive surface is coated with thin dielectric film, and the thickness of thin dielectric film is be more than or equal to 0.4mm；C, add after sintering aid at film surface, put into curing range and thin dielectric film is sintered；D, detection sintering quality, and pack warehouse-in.
In a step, the purity of highly purified catholyte copper rod is more than 99.95%, adopts the mode of extruding drawing to make molding；Conductive surface is first processed by shot blasting, polishing uses hand-held buffing machine, copper rod is carried out the polishing on surface, the polishing cloth that polishing uses is made up of non-woven fabrics, after polishing terminates, the dry compression air of 0.2Mpa～1.0Mpa is used to carry out reverse purging conductive surface, during purging, air gun and conductive surface are at a distance of 15mm～30mm, 30 °～60 ° of oblique angle.Lance outlet distance and film coated distance controlling are at 30cm～50cm.In b step, thin film adopts selects specific volume resistance 1015PI dielectric film (the PI of Ω cm, English name Polyimide, basic chemical formula (C20H8O5N4) n, produce for E.I.Du Pont Company the earliest, it is a kind of high-temperature insulation material), PI dielectric film be placed in continuous automatic film coating unit and uniform close rotate and be wrapped in conductive surface, PI dielectric film spacing between layers is 7.5mm ± 0.05mm.PI dielectric film and conductive surface are the angle of 30-65 degree, and tilted direction is around wrapping in conductive surface.In step c, during thin dielectric film sintering, temperature 300-360 DEG C, time 60-80min.Sintering aid is the copolymer (F46) of tetrafluoroethene and hexafluoropropene, tetrafluoroethene (TFE, molecular formula C2F4), hexafluoropropene (HFP, molecular formula C3F6).Hexafluoropropene mass percent therein accounts for the 12-18% of copolymer, and tetrafluoroethene mass percent accounts for the 82-88% of copolymer, the F46 coating layer thickness 0.006～0.009mm of coating on Kapton.
Embodiment 1
Conductor adopts purity catholyte copper rod more than 99.95%, and specification is 350MCM.Thin film adopts specific volume resistance 1015 Ω.The PI dielectric film of cm, to meeting insulating properties and the safety electrically running through core rod wire thin film so that it is meet the insulating requirements of the core rod wire of electrical penetration.(this Kapton is appointed as space flight insulating material factory of Changshu CTC (Centell Technology Corporation) by Shanghai power plant academy and produces, and product type FHF-46 polyimides meets thin film, and material the key technical indexes is as follows
First, high-purity catholyte copper conductor is carried out surface special handling, is first processed by shot blasting, use hand-held buffing machine, inadequate or slight pollution the copper rod of range estimation fineness is carried out the polishing on surface.Polishing uses the polishing cloth that non-woven fabrics makes.After polishing terminates, using the dry compression air of 0.2Mpa～1.0Mpa to carry out reverse purging conductive surface, during purging, air gun and conductive surface are at a distance of 15mm～30mm, 30 °～60 ° of oblique angle.Lance outlet distance and film coated distance controlling are at 30cm～50cm, it is to avoid dust adhesion conductive surface.Ensure the bright and clean impulse-free robustness of conductive surface, non-oxidation, without greasy dirt.Conductor after process, makes thin film to be neatly entirely wound on conductor, it is ensured that the tack sealing of thin film.Avoid because of between thin film and plug conductor because of defects such as greasy dirts, cause when high temperature sintering generation air gap, cause failure of insulation.In use being easily caused shelf depreciation, cause thin film Middle molecule chain interruption, heating etc. to become main body, attack conductor, thus affecting core rod wire performance and used life.
Secondly, using special purpose packet coating equipment that the PI dielectric film having special property of customization is passed through continuous multilayer, every layer keeps prescribed distance uniform close to be coated on around conductor, it is impossible to fold, crack occur. it is wound around loose. and the defects such as spacing disunity.To ensure that electrical penetration can bear the nitrogen pressure experimental enviroment of 3.5bar, reach good sealing, play and strengthen, in power plant's accidental pressure, the abnormal conditions being also unlikely to occur radioprotective leakage.
Then, again through special baking device and special production technology, bakee through high temperature so that dielectric film is sintered in around conductor, form a kind of seamless thin dielectric film and be eventually fabricated and electrically run through core rod wire for nuclear power generating equipment.
Finally, after passed examination, packaging is put in storage and is stacked and protects.
The performance indications of product of the present invention are described below by list:
Table 1350MCM core rod wire performance indications
Embodiment 2
The manufacture method electrically running through core rod wire for nuclear power generating equipment comprises the steps: that the highly purified catholyte copper rod adopting purity to be more than 99.95% is as conductor, adopts the mode of extruding drawing to make molding；Conductive surface is first processed by shot blasting, polishing uses hand-held buffing machine, copper rod is carried out the polishing on surface, the polishing cloth that polishing uses is made up of non-woven fabrics, after polishing terminates, the dry compression air of 0.2Mpa～1.0Mpa is used to carry out reverse purging conductive surface, during purging, air gun and conductive surface are at a distance of 15mm～30mm, 30 °～60 ° of oblique angle.Lance outlet distance and film coated distance controlling are at 30cm～50cm.Conductor after process, is placed in continuous automatic film coating unit, and conductive surface is coated with thin dielectric film, and thin film adopts selects specific volume resistance 1015The PI dielectric film of Ω cm, PI dielectric film be placed in continuous automatic film coating unit and uniform close rotate and be wrapped in conductive surface, PI dielectric film spacing between layers is 7.5mm, PI dielectric film and conductive surface are the angle of 30-65 degree, and tilted direction is around wrapping in conductive surface, and thin dielectric film is made up of multilayer polyimide thin film, the thickness of every strata imide membrane is 0.05+/-0.002mm, cladding 4 layers continuously, when putting up rate 50%, total film thickness is be more than or equal to 0.4mm.After film surface adds sintering aid, put into curing range thin dielectric film is sintered, sintering aid is the copolymer (F46) of tetrafluoroethene and hexafluoropropene, hexafluoropropene mass percent therein accounts for the 15% of copolymer, tetrafluoroethene mass percent accounts for the 85% of copolymer, the F46 coating layer thickness 0.00mm of coating on Kapton.During thin dielectric film sintering, temperature 360 DEG C, time 80min.
Finally, after passed examination, packaging is put in storage and is stacked and protects.
The performance indications of product of the present invention are described below by list:
Table 2250MCM core rod wire performance indications
According to the electrical penetration core rod wire product that the present invention produces, the correlation tests such as test confirms through Shanghai Power Equipment Research Institute, high temperature resistant, ageing-resistant, high pressure resistant, the technology requirement of the core rod wire of used in nuclear power station electrical penetration all can be met.
Claims (4)
1. what be used for nuclear power generating equipment electrically runs through core rod wire, it mainly includes conductor, it is characterized in that: the Surface coating of conductor has thin dielectric film, thin dielectric film adopts polyimide resin film to make, conductor adopts purity catholyte copper rod more than 99.95%, and the thickness of thin dielectric film is be more than or equal to 0.4mm；
The method electrically running through core rod wire for making described nuclear power generating equipment comprises the steps: a, adopts highly purified catholyte copper rod as conductor, conductive surface is processed, wherein, the purity of highly purified catholyte copper rod is more than 99.95%, adopts the mode of extruding drawing to make molding；Conductive surface is first processed by shot blasting, polishing uses hand-held buffing machine, copper rod is carried out the polishing on surface, the polishing cloth that polishing uses is made up of non-woven fabrics, after polishing terminates, uses the dry compression air of 0.2Mpa ~ 1.0Mpa to carry out reverse purging conductive surface, during purging, air gun and conductive surface are at a distance of 15mm ~ 30mm, and 30 ° ~ 60 ° of oblique angle, lance outlet distance and film coated distance controlling are at 30cm ~ 50cm；Conductor after b, process, is placed in continuous automatic film coating unit, and conductive surface is coated with thin dielectric film, and the thickness of thin dielectric film is be more than or equal to 0.4mm；C, add after sintering aid at film surface, put into curing range and thin dielectric film is sintered；D, detection sintering quality, and pack warehouse-in.
2. according to claim 1 electrically run through core rod wire for nuclear power generating equipment, it is characterised in that: in b step, thin film adopts specific volume resistance to be 1015The polyimide insulative film of Ω cm, polyimide insulative film be placed in continuous automatic film coating unit and uniform close rotate and be wrapped in conductive surface, polyimide insulative film spacing between layers is 7.5mm ± 0.05mm.
3. according to claim 1 electrically run through core rod wire for nuclear power generating equipment, it is characterised in that: in b step, polyimide insulative film and conductive surface are the angle of 30-65 degree, and tilted direction is around wrapping in conductive surface.
4. according to claim 1 electrically run through core rod wire for nuclear power generating equipment, it is characterized in that: in step c, during thin dielectric film sintering, temperature is 300-360 DEG C, the time is 60-80min, sintering aid is the copolymer of tetrafluoroethene and hexafluoropropene, hexafluoropropene mass percent therein accounts for the 12 18% of copolymer, tetrafluoroethene mass percent accounts for the 82 88% of copolymer, the coating layer thickness 0.006 ~ 0.009mm of copolymer of the tetrafluoroethene of coating and hexafluoropropene on Kapton.
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| CN103000280B true CN103000280B (en) | 2016-06-29 |
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| CN103268793B (en) * | 2013-04-15 | 2015-09-30 | 浙江康威胜高温线缆有限公司 | A kind of cable insulation layer coating machine |
| CN108470601B (en) * | 2018-05-23 | 2022-02-01 | 江苏中利集团股份有限公司 | Cable with monitoring line |
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| EP0094734A1 (en) * | 1982-05-17 | 1983-11-23 | The University of South Carolina | Capacitively shortened coaxial resonators for nuclear magnetic resonance signal reception |
| CN2807411Y (en) * | 2005-05-30 | 2006-08-16 | 中国核动力研究设计院 | Reactor containment low-voltage electric penetration piece |
| CN200953254Y (en) * | 2006-09-21 | 2007-09-26 | 中国核动力研究设计院 | Reactor containment low-voltage electric penetration piece |
| CN101252033A (en) * | 2008-04-03 | 2008-08-27 | 江苏冰城电材有限公司 | Production process for corona resistant polyimide film to produce winding wire |
| CN101515488A (en) * | 2009-03-17 | 2009-08-26 | 无锡环宇电磁线有限公司 | Polyimide sintered film transposed conductor |
| CN101582312A (en) * | 2008-05-12 | 2009-11-18 | 卢之云 | Processing process of corona-resistant film sintering flat wire |
| CN101667470A (en) * | 2008-09-01 | 2010-03-10 | 中国核动力研究设计院 | Poly (ether ether ketone) film lapping-high temperature sintering insulating conductor and manufacturing process thereof |
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- 2011-09-15 CN CN201110273889.7A patent/CN103000280B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0094734A1 (en) * | 1982-05-17 | 1983-11-23 | The University of South Carolina | Capacitively shortened coaxial resonators for nuclear magnetic resonance signal reception |
| CN2807411Y (en) * | 2005-05-30 | 2006-08-16 | 中国核动力研究设计院 | Reactor containment low-voltage electric penetration piece |
| CN200953254Y (en) * | 2006-09-21 | 2007-09-26 | 中国核动力研究设计院 | Reactor containment low-voltage electric penetration piece |
| CN101252033A (en) * | 2008-04-03 | 2008-08-27 | 江苏冰城电材有限公司 | Production process for corona resistant polyimide film to produce winding wire |
| CN101582312A (en) * | 2008-05-12 | 2009-11-18 | 卢之云 | Processing process of corona-resistant film sintering flat wire |
| CN101667470A (en) * | 2008-09-01 | 2010-03-10 | 中国核动力研究设计院 | Poly (ether ether ketone) film lapping-high temperature sintering insulating conductor and manufacturing process thereof |
| CN101515488A (en) * | 2009-03-17 | 2009-08-26 | 无锡环宇电磁线有限公司 | Polyimide sintered film transposed conductor |
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