CN105280279B - A kind of flexible direct current overland cable duplex sheath - Google Patents
A kind of flexible direct current overland cable duplex sheath Download PDFInfo
- Publication number
- CN105280279B CN105280279B CN201510766232.2A CN201510766232A CN105280279B CN 105280279 B CN105280279 B CN 105280279B CN 201510766232 A CN201510766232 A CN 201510766232A CN 105280279 B CN105280279 B CN 105280279B
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- oversheath
- fire
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- cable
- internal layer
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- 239000003063 flame retardant Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 239000004698 Polyethylene Substances 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 41
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002464 physical blending Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The present invention relates to a kind of flexible direct current overland cable duplex sheath, it is characterised in that：It includes cable water-blocking conductor, conductor shield, insulating barrier, insulation screen, water-blocking buffer layer, protective metal shell, internal layer waterproof oversheath and the fire-retardant oversheath of outer layer；The conductor shield is provided with outside some cable water-blocking conductors, is disposed with the insulating barrier, insulation screen, water-blocking buffer layer and protective metal shell from the inside to the outside on the outside of the conductor shield；The internal layer waterproof oversheath is provided with outside the protective metal shell, the fire-retardant oversheath of the outer layer is additionally provided with outside the internal layer waterproof oversheath, the fire-retardant oversheath of internal layer waterproof oversheath and outer layer forms duplex sheath structure.The present invention is safe and reliable to operation, can meet related specifications requirement, can be widely applied to humid environment and the high cable application place of flame-retardancy requirements.
Description
Technical field
It is straight especially with regard to a kind of flexibility applied in high-tension cable field of power transmission the present invention relates to a kind of cable cover(ing)
Flow overland cable duplex sheath.
Background technology
High-tension cable is often laid in seabed tunnel or underground water compared with the tunnel of horn of plenty, tighter due to being seeped water in tunnel
The fact that again, moisture is very big, and need to consider under some extreme situations to occur that local segment can in cable running
Situation about largely intake, therefore cable usually requires to be considered as the outer shield of block-water performance preferably insulation in oversheath type selecting
Layer.Meanwhile required based on fireproof in tunnel, need cable jacket that there is excellent fire resistance again.
Currently used cable plastic extrusion jacket material includes polyethylene (PE) and polyvinyl chloride (PVC), with polyvinyl chloride
Also there is application in engineering for the flame retardant jacket materials of matrix material, and the chlorine that polyvinyl chloride decomposes in burning in itself has more
Help it is fire-retardant, but in view of polyvinyl chloride burning when can separate out the toxic gas containing hydrogen chloride etc..Simultaneously as introduce big
After measuring filler and fire retardant, the mechanical performance of polyvinyl chloride can be decreased obviously, and anti-cracking performance is poor, in the temperature difference, humidity, height
Used under the adverse circumstances such as temperature, radiation, it is easier to ftracture.Therefore established tunnel Voltage Cable Lines Construction oversheath pattern at home
In, for polyvinyl chloride oversheath gradually by eliminating, polyethylene outer sheath turns into conventional selecting type scheme.
Fire-retardant polyethylene material introduces additive flame retardant in base polyethylene material by way of physical blending and risen
To fire retardation, the polythene material after doping has preferable fire resistance, but makes polyethylene due to introducing a large amount of auxiliary agents
The mechanical performance and water-blocking moistureproof performance of itself are by large effect, therefore the flame-proof polyethylene sheath of individual layer is difficult to while simultaneous
Have good humidity resistance and fire resistance.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of flexible direct current overland cable duplex sheath, it runs peace
It is complete reliable, related specifications requirement can be met.
To achieve the above object, the present invention takes following technical scheme：A kind of flexible direct current overland cable duplex sheath, its
It is characterised by：It include cable water-blocking conductor, conductor shield, insulating barrier, insulation screen, water-blocking buffer layer, protective metal shell,
Internal layer waterproof oversheath and the fire-retardant oversheath of outer layer；The conductor shield is provided with outside some cable water-blocking conductors,
The insulating barrier, insulation screen, water-blocking buffer layer and metal shield are disposed with the outside of the conductor shield from the inside to the outside
Set；The internal layer waterproof oversheath is provided with outside the protective metal shell, is additionally provided with outside the internal layer waterproof oversheath
The fire-retardant oversheath of outer layer, the fire-retardant oversheath of internal layer waterproof oversheath and outer layer form duplex sheath structure.
Preferably, the fire-retardant oversheath of the internal layer waterproof oversheath and outer layer is made of double-layer coextrusion mode.
Preferably, the insulating barrier uses ultra-clean thermoset crosslink polyethylene or thermoplasticity low density polyethylene combustible material system
Into；The conductor shield and insulation screen use partly leads material with ultra-smooth performance, high conduction performance and thermosetting property
Material is made.
Preferably, the internal layer waterproof oversheath is made of the low nonmetallic materials of moisture content permeability, the outer layer resistance
Combustion oversheath is made of high-fire-resistance thermoplastic cable's material.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention is due to using water-blocking moistureproof
Can good internal layer waterproof oversheath and the good fire-retardant oversheath of outer layer of fire resistance form duplex sheath structure, make the present invention
Not only have preferable fire resistance, also have concurrently block water, humidity resistance, it is ensured that external insulation performance it is steady in a long-term.2nd, the present invention is double
Each thickness degree of layer sheath can adjust according to product real needs, it is ensured that the fire resistance of cable reaches bunched burning test mark
It is accurate.3rd, duplex sheath of the present invention is made of double-layer coextrusion mode, so can effectively ensure duplex sheath overall performance and
Interface layer is good.In summary, the present invention can be widely applied to humid environment and the high cable application place of flame-retardancy requirements.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention provides a kind of flexible direct current overland cable duplex sheath that can meet different use environments,
It includes cable water-blocking conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, water-blocking buffer layer 5, protective metal shell 6, interior
Layer waterproof oversheath 7 and the fire-retardant oversheath 8 of outer layer.Conductor shield 2 is provided with outside some cable water-blocking conductors 1, in conductor screen
Cover the outside of layer 2 and be disposed with insulating barrier 3, insulation screen 4, water-blocking buffer layer 5 and protective metal shell 6 from the inside to the outside.Metal protects
Set 6 outside be provided with block water, the internal layer waterproof oversheath 7 of moisture-proof role, positioned at internal layer waterproof oversheath 7 outside be additionally provided with
The fire-retardant oversheath 8 of outer layer of fire retardation, duplex sheath structure is formed by internal layer waterproof oversheath 7 and the fire-retardant oversheath 8 of outer layer.
In above-described embodiment, to ensure the good interlayer contact interface of duplex sheath, seamless, wedge angle, stomata etc., internal layer
Waterproof oversheath 7 and the fire-retardant oversheath 8 of outer layer are made of double-layer coextrusion mode, to ensure that it is good that duplex sheath integrally possesses
Mechanical performance and insulating properties.
In the various embodiments described above, cable water-blocking conductor 1 is made of copper or aluminium conductor and its alloy material.
In the various embodiments described above, insulating barrier 3 is fired using ultra-clean thermoset crosslink polyethylene or thermoplasticity low density polyethylene
Material is made；Conductor shield 2 and insulation screen 4 are made of high-performance semiconducting material, have ultra-smooth performance, highly conductive
Performance and thermosetting property.
In the various embodiments described above, internal layer waterproof oversheath 7 and the fire-retardant oversheath 8 of outer layer are made of different materials, internal layer
Waterproof oversheath 7 is made of the low nonmetallic materials of moisture content permeability, such as Midst density or high density polyethylene (HDPE).Outer layer is fire-retardant
Oversheath 8 is located at the outermost layer of flexible direct current cable, possesses good fire resistance, using high-fire-resistance thermoplastic cable's material
It is made, such as flame-proof PVC, fire-retardant poly- second combustion or low smoke, zero halogen polyolefin.
In the various embodiments described above, the thickness of internal layer waterproof oversheath 7 and the fire-retardant oversheath 8 of outer layer can be according to specifically used need
Ask and be adjusted.
Describe the principle of the flexible direct current power cable sheath of the present invention in detail below by specific embodiment.
Embodiment：In ± 320kV flexible DC power transmission the science and technology demonstration projects of Xiamen, ± 320kV 1800mm2Polarity electricity
Cable and ± 10kV 1600mm2The flexible direct current overland cable duplex sheath of the present invention is used in the production and processing of return cable,
After the corrugated aluminium sheath production for completing direct current cables, ± 320kV 1800mm are completed simultaneously by the way of duplex sheath co-extrusion2Pole
Property cable thickness be 2.5mm medium density polyethylenes sheath and thickness is the production of 2.5mm flame-proof polyethylenes sheath, and ± 10kV
1600mm2Polarity cable thickness is 2.0mm medium density polyethylenes sheath and thickness is the production of 2.0mm flame-proof polyethylenes sheath, complete
After into production direct current cables not only have preferable fire resistance, also have block-water performance concurrently, it is ensured that external insulation performance it is steady in a long-term.
The various embodiments described above are merely to illustrate the present invention, and structure and size, set location and the shape of each part are all can be with
It is varied from, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and waits
With conversion, should not exclude outside protection scope of the present invention.
Claims (2)
- A kind of 1. flexible direct current overland cable duplex sheath, it is characterised in that：It include cable water-blocking conductor, conductor shield, Insulating barrier, insulation screen, water-blocking buffer layer, protective metal shell, internal layer waterproof oversheath and the fire-retardant oversheath of outer layer；It is some described The conductor shield is provided with outside cable water-blocking conductor, is disposed with from the inside to the outside on the outside of the conductor shield described Insulating barrier, insulation screen, water-blocking buffer layer and protective metal shell；It is provided with outside the internal layer waterproof and protects outside the protective metal shell Set, is additionally provided with the fire-retardant oversheath of the outer layer outside the internal layer waterproof oversheath, the internal layer waterproof oversheath and outer The fire-retardant oversheath of layer forms duplex sheath structure；The fire-retardant oversheath of the internal layer waterproof oversheath and outer layer is made of double-layer coextrusion mode；The internal layer waterproof oversheath is made of Midst density or high-density polyethylene material；The fire-retardant oversheath of outer layer uses High-fire-resistance thermoplastic cable's material is made.
- A kind of 2. flexible direct current overland cable duplex sheath as claimed in claim 1, it is characterised in that：The insulating barrier uses Ultra-clean thermoset crosslink polyethylene or thermoplasticity low density polyethylene combustible material are made；The conductor shield and insulation screen It is made of the semiconducting material with ultra-smooth performance, high conduction performance and thermosetting property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766232.2A CN105280279B (en) | 2015-11-11 | 2015-11-11 | A kind of flexible direct current overland cable duplex sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766232.2A CN105280279B (en) | 2015-11-11 | 2015-11-11 | A kind of flexible direct current overland cable duplex sheath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105280279A CN105280279A (en) | 2016-01-27 |
| CN105280279B true CN105280279B (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510766232.2A Active CN105280279B (en) | 2015-11-11 | 2015-11-11 | A kind of flexible direct current overland cable duplex sheath |
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| CN (1) | CN105280279B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017043A (en) * | 2017-05-18 | 2017-08-04 | 无锡市新阳光电缆有限公司 | Fire proof power cable is pressed in one kind |
| CN106981339A (en) * | 2017-05-19 | 2017-07-25 | 无锡市新阳光电缆有限公司 | Three cores are pressed to resist cold power cable in a kind of low-smoke non-halogen flame-retardant |
Citations (3)
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| CN201111987Y (en) * | 2007-10-24 | 2008-09-10 | 天津亨特尔线缆有限公司 | Freeway weighting transducer cable |
| CN202258514U (en) * | 2011-10-09 | 2012-05-30 | 上海胜华电缆厂有限公司 | Direct current 1500V cross-linked polyethylene insulation power cable for track traffic |
| CN202650691U (en) * | 2012-05-05 | 2013-01-02 | 安徽明星电缆有限公司 | Trapezoidal structure flexible high voltage direct current cable having high water resistance performance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2568395C (en) * | 2005-11-16 | 2010-03-30 | Service Wire Company | Adjustable speed drive/variable frequency drive cable, connector and termination system |
| CN201698817U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable |
| CN102543286A (en) * | 2012-02-15 | 2012-07-04 | 安徽华星电缆集团有限公司 | Low-smoke zero-halogen termite-proof rat-proof flame-retardant and fire-proof control cable |
| CN203397721U (en) * | 2013-08-22 | 2014-01-15 | 湖南华菱线缆股份有限公司 | High current-carrying warp-resistance weather-proof type middling pressure flexible cable for aerogenerator |
-
2015
- 2015-11-11 CN CN201510766232.2A patent/CN105280279B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201111987Y (en) * | 2007-10-24 | 2008-09-10 | 天津亨特尔线缆有限公司 | Freeway weighting transducer cable |
| CN202258514U (en) * | 2011-10-09 | 2012-05-30 | 上海胜华电缆厂有限公司 | Direct current 1500V cross-linked polyethylene insulation power cable for track traffic |
| CN202650691U (en) * | 2012-05-05 | 2013-01-02 | 安徽明星电缆有限公司 | Trapezoidal structure flexible high voltage direct current cable having high water resistance performance |
Also Published As
| Publication number | Publication date |
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| CN105280279A (en) | 2016-01-27 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160812 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: State Power Economic Research Institute Applicant after: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Applicant after: Zhongtian Technologies Submarine Optic Fiber Cable Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: State Power Economic Research Institute Applicant before: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Applicant before: FUJIAN YONGFU POWER ENGINEERING CO., LTD. Applicant before: Zhongtian Technologies Submarine Optic Fiber Cable Co., Ltd. |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Zan Inventor after: Wu Fangjie Inventor after: Fu Ying Inventor after: Du Xiaolei Inventor after: Li Qingxian Inventor after: Wang Riheng Inventor after: Zhang Wantong Inventor after: Li Biqing Inventor after: Zhang Qianqian Inventor after: Zhang Jianmin Inventor after: Hu Ming Inventor after: Chang Hao Inventor after: Zhang Hongliang Inventor after: Pan Ersheng Inventor after: Ma Weimin Inventor after: Shi Yan Inventor after: Le Bo Inventor after: Mei Nian Inventor after: Chen Dong Inventor after: Lai Qingping Inventor before: Wang Zan Inventor before: Du Xiaolei Inventor before: Li Qingxian Inventor before: Wang Riheng Inventor before: Zhang Wantong Inventor before: Li Biqing Inventor before: Zhang Qianqian Inventor before: Zhang Jianmin Inventor before: Hu Ming Inventor before: Zhang Hongliang Inventor before: Chang Hao Inventor before: Ma Weimin Inventor before: Shi Yan Inventor before: Le Bo Inventor before: Mei Nian Inventor before: Chen Dong Inventor before: Wu Fangjie Inventor before: Fu Ying |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE POWER ECONOMIC Research Institute Patentee after: BEIJING WANGLIAN DC ENGINEERING & TECHNOLOGY Co.,Ltd. Patentee after: Zhongtian Technology submarine cable Co., Ltd Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: STATE POWER ECONOMIC Research Institute Patentee before: BEIJING WANGLIAN DC ENGINEERING & TECHNOLOGY Co.,Ltd. Patentee before: ZHONGTAN TECHNOLOGY SUBMARINE CABLE Co.,Ltd. |