CN107342135A - Low-voltage electric power cable used for nuclear - Google Patents
Low-voltage electric power cable used for nuclear Download PDFInfo
- Publication number
- CN107342135A CN107342135A CN201710478839.XA CN201710478839A CN107342135A CN 107342135 A CN107342135 A CN 107342135A CN 201710478839 A CN201710478839 A CN 201710478839A CN 107342135 A CN107342135 A CN 107342135A
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- CN
- China
- Prior art keywords
- layer
- outside
- halogen
- temperature resistant
- nuclear
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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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
- H01B7/02—Disposition of insulation
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- 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
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of low-voltage electric power cable used for nuclear, include the multiple conductors for being twisted bunchy by more tinned copper wires and being formed, it is coated with crosslinking with radiation halogen-free polyolefin inner insulating layer, external insulation layer, double-deck high temperature resistant lapping layer outside each conductor successively respectively, fiberglass gridding cloth inner liner, irradiation crosslinking halogen-free polyolefin flame-retardant external sheath layer is coated with jointly outside the double-deck high temperature resistant lapping layer of multiple conductors；Non-hygroscopic bittern-free flame-proof material is filled in fiberglass gridding cloth inner liner.Cable insulation and sheath of the present invention have excellent physical and mechanical properties, and high-temperature resistant result is good, while have resistance to 60 years heat aging performances.
Description
Technical field：
The present invention relates to cable, mainly a kind of used in nuclear power station 1E levels K1 class lv power cables.
Background technology：
Nuclear energy is a kind of cleaning and the safe and reliable energy, can effectively alleviate energy demand and money that China becomes increasingly conspicuous at present
Source, communications and transportation, the contradiction of environmental protection, and solve an important channel of China's energy potential collision hazard.Into the new century,
New strategical reajustment is made in development of the country to nuclear power.State Council has promulgated《Nuclear power Long-and Medium-term Development is planned》, it is proposed that arrive
The year two thousand twenty nuclear power installed capacity reaches 50,000,000 kilowatts, is building 18,000,000 kilowatts of target.From the point of view of world wide, Asia is still
The center of Nuclear Electricity development.Three generations's nuclear power harsh and unforgiving environments are developed to use（K1 classes）Nuclear grade cable, will be to 1E level nuclear grade cables
Market produces material impact, realizes and substitutes similar imported product, realizes that nuclear power key technology domesticizes, the development to social economy
And national security has great significance, while it is expected to realize export abroad, lifts the competition energy of domestic nuclear power international market
Power.
Wherein power cable is mainly used for transmitting and distributes the cable of electric energy, requires in actual use stronger
Heat-resisting quantity.
The content of the invention：
The technical problems to be solved by the invention are to provide a kind of low-voltage electric power cable used for nuclear, to solve prior art presence
Technical problem.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of low-voltage electric power cable used for nuclear, includes the multiple conductors for being twisted bunchy by more tinned copper wires and being formed, and it is special
Sign is：It has been respectively coated by outside each conductor exhausted outside crosslinking with radiation halogen-free polyolefin inner insulating layer and crosslinking with radiation halogen-free polyolefin
Edge layer, double-deck high temperature resistant lapping layer is also respectively coated by outside the crosslinking with radiation halogen-free polyolefin external insulation layer of each conductor, it is double
Layer high temperature resistant lapping layer is high-temperature resistant membrane lapping layer and high-temperature fibre lapping layer respectively, the double-deck resistance to height of the multiple conductor
Fiberglass gridding cloth inner liner is coated with outside warm lapping layer jointly, irradiation is also wrapped on outside fiberglass gridding cloth inner liner and is handed over
Join the fire-retardant external sheath layer of halogen-free polyolefin；Non-hygroscopic bittern-free flame-proof material is filled in fiberglass gridding cloth inner liner.
A kind of described low-voltage electric power cable used for nuclear, it is characterised in that：In fiberglass gridding cloth inner liner and spoke
According to packed layer is provided between crosslinked halogen-free polyolefin flame-retardant external sheath layer, high temperature oxidation resisting magnesium ceramic powder is filled with packed layer
End.
A kind of described low-voltage electric power cable used for nuclear, it is characterised in that：The inside and outside insulating barrier and external sheath layer
Pristine tensile strength and elongation at break can reach 9.0N/mm2 and more than 200%.
Conductor of the present invention uses the 2nd class tinned copper conductor.
Innovative point of the present invention：
（1）Optimize product structure, increase high temperature resistant lapping layer；
This time the insulation of research and development core is extruded using irradiation polyolefin bilayer, ensures that its electrical property meets design requirement, but because of polyene
The resistance to elevated temperatures of hydrocarbon material is relatively low, to ensure cable normal use under nominal situation and DBA and AG operating modes, in insulated wire cores
The upper selection increase wrapped Rotating fields of high temperature resistant, effectively ensure that the properties of insulated wire cores at high operating temperatures meet design and wanted
Ask, cable overall performance is also obviously improved.
（2）Carry out material beta ray and gamma-rays transfer test at home first；
Because current experimental condition limits, β ray tests device is still difficult to carry out radiation aging experiment to batch cable, to ensure
The continuity of experiment, my company carry out β rays and gamma-rays transfer test to identical material, model are calculated with reference to center group heap work
To enclose, experiment draws β rays and gamma-rays conversion proportion, and LOCA radiation agings are carried out using whole cable of conversion proportion relation pair,
Ensure test validity.
（3）Electric performance test is carried out after immersion test, meets design requirement；
After long-term immersion test, test cable need to carry out immersion pressure test again, to ensure it in submergence and after submergence
With the characteristic that its function is performed under harsh and unforgiving environments working condition, meet in harsh and unforgiving environments working condition design requirement.
（4）Under equal conditions carry out heat ageing and the comparative experiment of simulating piece bunchy burning, checking before and after radiation aging
Heat ageing and the influence of radiation aging factor pair fire retardant mechanism；
The examination list organized for checking heat ageing and the influence of radiation aging factor pair fire retardant mechanism, research and development cable in nuclear safety office
Under the witness of position and designing unit, heat ageing and simulating piece bunched burning test before and after radiation aging are under equal conditions carried out,
Result of the test meets design and test program requirement.
It is an advantage of the invention that：
The present invention is suitable for 1kV inside and outside three generations's nuclear power plant containment shell and following AC electric power systems, the cable insulation and sheath
With excellent physical and mechanical properties, high-temperature resistant result is good, while has resistance to 60 years heat aging performances, can meet that nuclear power station is normal
60 years accumulation irradiation dose 250kGy under operating mode, while meet bunchy A class combustion requirements specified in IEC60332, reach state
Interior advanced level.
Brief description of the drawings：
Fig. 1 is the structural representation of the present invention.
Embodiment：
Referring to Fig. 1, a kind of low-voltage electric power cable used for nuclear, include by more tinned copper wires 1 be twisted bunchy form it is multiple
Conductor, each conductor have been respectively coated by exhausted outside crosslinking with radiation halogen-free polyolefin inner insulating layer 2 and crosslinking with radiation halogen-free polyolefin outside
Edge layer 3, the double-deck He of high temperature resistant lapping layer 4 is also respectively coated by outside the crosslinking with radiation halogen-free polyolefin external insulation layer of each conductor
5, double-deck high temperature resistant lapping layer is high-temperature resistant membrane lapping layer 4 and high-temperature fibre lapping layer 5 respectively, the multiple conductor it is double
Fiberglass gridding cloth inner liner 6 is coated with outside layer high temperature resistant lapping layer jointly, is also coated outside fiberglass gridding cloth inner liner
There is irradiation crosslinking halogen-free polyolefin flame-retardant external sheath layer 7；The filling non-hygroscopic Halogen resistance in fiberglass gridding cloth inner liner 6
Combustible material 9.
Filling is provided between fiberglass gridding cloth inner liner 6 and irradiation crosslinking halogen-free polyolefin flame-retardant external sheath layer 7
Layer 8, packed layer 8 is interior to be filled with high temperature oxidation resisting magnesium ceramic powders.
The pristine tensile strength and elongation at break of the inside and outside insulating barrier and external sheath layer can reach 9.0N/mm2 and
More than 200%.
Claims (3)
1. a kind of low-voltage electric power cable used for nuclear, include the multiple conductors for being twisted bunchy by more tinned copper wires and being formed, its
It is characterised by：It has been respectively coated by outside each conductor outside crosslinking with radiation halogen-free polyolefin inner insulating layer and crosslinking with radiation halogen-free polyolefin
Insulating barrier, double-deck high temperature resistant lapping layer is also respectively coated by outside the crosslinking with radiation halogen-free polyolefin external insulation layer of each conductor,
Double-deck high temperature resistant lapping layer is high-temperature resistant membrane lapping layer and high-temperature fibre lapping layer respectively, the multiple conductor it is double-deck resistance to
Fiberglass gridding cloth inner liner is coated with outside high temperature lapping layer jointly, irradiation is also wrapped on outside fiberglass gridding cloth inner liner
Crosslinked halogen-free polyolefin flame-retardant external sheath layer；Non-hygroscopic bittern-free flame-proof material is filled in fiberglass gridding cloth inner liner.
A kind of 2. low-voltage electric power cable used for nuclear according to claim 1, it is characterised in that：In fiberglass gridding cloth
Packed layer is provided between inner liner and irradiation crosslinking halogen-free polyolefin flame-retardant external sheath layer, high temperature oxidation resisting is filled with packed layer
Magnesium ceramic powders.
A kind of 3. low-voltage electric power cable used for nuclear according to claim 1, it is characterised in that：The inside and outside insulating barrier
It can reach 9.0N/mm2 and more than 200% with the pristine tensile strength and elongation at break of external sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478839.XA CN107342135A (en) | 2017-06-22 | 2017-06-22 | Low-voltage electric power cable used for nuclear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478839.XA CN107342135A (en) | 2017-06-22 | 2017-06-22 | Low-voltage electric power cable used for nuclear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107342135A true CN107342135A (en) | 2017-11-10 |
Family
ID=60220941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710478839.XA Pending CN107342135A (en) | 2017-06-22 | 2017-06-22 | Low-voltage electric power cable used for nuclear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107342135A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109767862A (en) * | 2019-01-10 | 2019-05-17 | 武汉市江华电线电缆有限责任公司 | A kind of fireproof cable |
| CN113884615A (en) * | 2021-08-31 | 2022-01-04 | 中国核电工程有限公司 | Flame-retardant test method for cable heat-shrinkable tubing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201369187Y (en) * | 2009-03-25 | 2009-12-23 | 上海电缆厂有限公司 | Control cable for nuclear power station |
| CN203118665U (en) * | 2013-02-25 | 2013-08-07 | 宝胜科技创新股份有限公司 | Network cable for AP1000 nuclear power plant |
| CN203433870U (en) * | 2013-08-19 | 2014-02-12 | 宝胜科技创新股份有限公司 | High-temperature resistant flexible intermediate frequency water-cooled cable |
| US20160358693A1 (en) * | 2014-08-26 | 2016-12-08 | Shandong Hualing Gable Co.Ltd. | Class 1E cable for third generation passive nuclear power plant in mild environment and manufacturing method thereof |
| CN106531312A (en) * | 2016-12-26 | 2017-03-22 | 常州八益电缆股份有限公司 | Nuclear power plant cable and production method |
-
2017
- 2017-06-22 CN CN201710478839.XA patent/CN107342135A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201369187Y (en) * | 2009-03-25 | 2009-12-23 | 上海电缆厂有限公司 | Control cable for nuclear power station |
| CN203118665U (en) * | 2013-02-25 | 2013-08-07 | 宝胜科技创新股份有限公司 | Network cable for AP1000 nuclear power plant |
| CN203433870U (en) * | 2013-08-19 | 2014-02-12 | 宝胜科技创新股份有限公司 | High-temperature resistant flexible intermediate frequency water-cooled cable |
| US20160358693A1 (en) * | 2014-08-26 | 2016-12-08 | Shandong Hualing Gable Co.Ltd. | Class 1E cable for third generation passive nuclear power plant in mild environment and manufacturing method thereof |
| CN106531312A (en) * | 2016-12-26 | 2017-03-22 | 常州八益电缆股份有限公司 | Nuclear power plant cable and production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109767862A (en) * | 2019-01-10 | 2019-05-17 | 武汉市江华电线电缆有限责任公司 | A kind of fireproof cable |
| CN113884615A (en) * | 2021-08-31 | 2022-01-04 | 中国核电工程有限公司 | Flame-retardant test method for cable heat-shrinkable tubing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20171110 |