CN103489528A - Crosslinked polyethylene insulating and water-blocking power cable - Google Patents
Crosslinked polyethylene insulating and water-blocking power cable Download PDFInfo
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- CN103489528A CN103489528A CN201310420411.1A CN201310420411A CN103489528A CN 103489528 A CN103489528 A CN 103489528A CN 201310420411 A CN201310420411 A CN 201310420411A CN 103489528 A CN103489528 A CN 103489528A
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- 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
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a crosslinked polyethylene insulating and water-blocking power cable. The crosslinked polyethylene insulating and water-blocking power cable comprises cable cores. A plurality of insulated wire core bodies are stranded to form each cable core. Each cable core is composed of a water-resistance conductor, a conductor shielding layer, a crosslinked polyethylene insulating layer, an insulation shielding layer, a semiconductive water-blocking layer and a metal shielding layer, wherein each conductor shielding layer, one of the crosslinked polyethylene insulating layers, one of the insulation shielding layers, one of the semiconductive water-blocking layers and one of the metal shielding layers sequentially wrap one of the water-blocking conductors in an extrusion mode. The water-blocking rope filling layers are arranged among the cable cores, a first water-blocking tape wrapping layer wraps each cable core, an aluminum plastic longitudinally wrapping layer coats each first water-blocking tape wrapping layer, and a polyethylene isolating layer, a zinc-coated wire armor layer, a second water-blocking tape wrapping layer and a polyethylene outer protective layer sequentially wrap each aluminum plastic longitudinally wrapping layer. The crosslinked polyethylene insulating and water-blocking power cable has the advantages of having the high radial water blocking characteristic and the high longitudinal water blocking characteristic, being long in service life, stable in running, and the like.
Description
Technical field
The invention belongs to the power cable field, be specifically related to a kind of crosslinking polyethylene insulation water-proof power cable.
Background technology
The application of domestic crosslinked polyethylene (XLPE) the insulated power cable history of existing thirties years, because of its good electric and mechanical and physical performance, and have that production technology is simple, structure is light, transmission capacity is large, mounting and installation and maintaining convenient, be not subject to the advantage such as drop restriction, in electric power system, be widely used.
In the 90's of last century, the expert once investigated to domestic certain iron and steel corporation, found the crosslinked cable laid the eighties, and owing to not adopting good stop water, cable can't move, and cable does not reach 30 years of designing requirement useful life.Through to the failure cable dissection and analysis, its main cause is that the XLPE cable is laying and run duration, moisture or moisture can along cable vertically and radial clearance infiltrate, cause XLPE to insulate and generate water tree under working voltage.Water tree grows into certain-length and can, in the most advanced and sophisticated permanent electric branch defect that causes of water tree, finally cause cable insulation to puncture.
According to statistics, in domestic electrical network 10～35kV electric power system, because cable does not adopt the result that well blocks water, generally in operation, after 8～12 years, grow large water gaging tree, breakdown accident occurs, have a strong impact on the safe operation of electrical network.Therefore, the cable technology that blocks water all had very important significance for the reliability and the life-span that guarantee XLPE cable.
Summary of the invention
The purpose of this invention is to provide a kind of have higher radially with longitudinal water-blocking characteristic, cable long service life, stable crosslinking polyethylene insulation water-proof power cable.
A kind of crosslinking polyethylene insulation water-proof power cable of the present invention, comprise cable core, its cable core is by stranded the forming of some eradication edge cores, and described insulated wire cores is by water-blocking conductor and be extruded in successively water-blocking conductor outer conductor shield, crosslinked polyetylene insulated layer, insulation screen, semiconductive water blocking layer, metal screen layer and form; The cable core gap location is provided with the waterproofing rope packed layer, outer wrapped the first waterstop lapping layer of cable core, the first waterstop lapping layer outer cladding plastic-aluminum is indulged covering, the vertical covering of plastic-aluminum extrudes polyethylene isolation layer, zinc-coated wire armour, the second waterstop lapping layer and outer protective polyethylene layer outward successively.
Described semiconductive water blocking layer adopts overlapping wrapped the forming of one deck 0.5mm thickness semiconductive waterstop, and the band Duplication is bandwidth 18%～20%.
The vertical covering of described plastic-aluminum adopts YLY type polyethylene double-sided aluminum plastic composite band, and the composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, and vertically coating is put up width and is greater than 6.0mm.
Beneficial effect of the present invention is:
The present invention's wrapped semiconductive waterstop between each layer when conductor is stranded, effectively stop moisture to pass through water inlet cable inside, the stranded gap of conductor, cable wrapped semiconductive waterstop after insulation shielding stops moisture to enter cable inside by the gap between insulation shielding and metal screen layer effectively, all can produce gap after cable cabling He after wire armoring, therefore, wrapped waterstop all after its operation, prevent that moisture from entering from intermediate gap, this invention adopts plastic-aluminum combined integrated sheath as radial resistivity water layer, reach by the aluminium-plastic tape of vertical bag and the polyethylene isolation layer acting in conjunction extruded the purpose that blocks water.Its mechanism that blocks water is: when extruding polyethylene isolation layer, the effect of melting the height moderate pressure due to polyethylene, the polyethylene film of plastic-aluminum combined belt surface and the inner surface of polyethylene isolation layer are bondd well, and putting up between the aluminum plastic composite belt longitudinal bag also obtains good bonding simultaneously.Thereby stoped the infiltration of moisture, reached good block-water effect.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of crosslinking polyethylene insulation water-proof power cable of the present invention, comprise cable core, its cable core is by stranded the forming of some eradication edge cores, and described insulated wire cores is by water-blocking conductor 1 and be extruded in successively the outer conductor shield 2 of water-blocking conductor 1, crosslinked polyetylene insulated layer 3, insulation screen 4, semiconductive water blocking layer 5, metal screen layer 6 and form; The cable core gap location is provided with waterproofing rope packed layer 7, the vertical covering 9 of outer wrapped the first waterstop lapping layer 8, the first waterstop lapping layer 8 outer cladding plastic-aluminums of cable core, outer polyethylene isolation layer 10, zinc-coated wire armour 11, the second waterstop lapping layer 12 and the outer protective polyethylene layer 13 of extruding successively of the vertical covering 9 of plastic-aluminum.
The described semiconductive water blocking layer 5 of appeal is to adopt overlapping wrapped the forming of one deck 0.5mm thickness semiconductive waterstop, and the band Duplication is bandwidth 18%～20%; The vertical covering 9 of described plastic-aluminum is to adopt YLY type polyethylene double-sided aluminum plastic composite band, and the composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, and vertically coating is put up width and is greater than 6.0mm.
The invention provides a kind of crosslinking polyethylene insulation water-proof power cable; the above is only preferred implementation method of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. a crosslinking polyethylene insulation water-proof power cable, comprise cable core, its cable core, by stranded the forming of some eradication edge cores, is characterized in that: described insulated wire cores is by water-blocking conductor (1) and be extruded in successively the outer conductor shield (2) of water-blocking conductor (1), crosslinked polyetylene insulated layer (3), insulation screen (4), semiconductive water blocking layer (5), metal screen layer (6) formation; The cable core gap location is provided with waterproofing rope packed layer (7), outer wrapped the first waterstop lapping layer (8) of cable core, the first waterstop lapping layer (8) outer cladding plastic-aluminum is indulged covering (9), outer polyethylene isolation layer (10), zinc-coated wire armour (11), the second waterstop lapping layer (12) and the outer protective polyethylene layer (13) of extruding successively of the vertical covering (9) of plastic-aluminum.
2. crosslinking polyethylene insulation water-proof power cable according to claim 1 is characterized in that: described semiconductive water blocking layer (5) adopts overlapping wrapped the forming of one deck 0.5mm thickness semiconductive waterstop, and the band Duplication is bandwidth 18%～20%.
3. crosslinking polyethylene insulation water-proof power cable according to claim 1, it is characterized in that: described plastic-aluminum is indulged covering (9) and is adopted YLY type polyethylene double-sided aluminum plastic composite band, the composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, and vertically coating is put up width and is greater than 6.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310420411.1A CN103489528A (en) | 2013-09-16 | 2013-09-16 | Crosslinked polyethylene insulating and water-blocking power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310420411.1A CN103489528A (en) | 2013-09-16 | 2013-09-16 | Crosslinked polyethylene insulating and water-blocking power cable |
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| CN103489528A true CN103489528A (en) | 2014-01-01 |
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| CN201310420411.1A Pending CN103489528A (en) | 2013-09-16 | 2013-09-16 | Crosslinked polyethylene insulating and water-blocking power cable |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794276A (en) * | 2014-02-17 | 2014-05-14 | 无锡市长城电线电缆有限公司 | Flexible high-voltage direct-current cross-linked polyethylene insulation power cable |
| CN104167248A (en) * | 2014-09-10 | 2014-11-26 | 中天科技海缆有限公司 | Environment-friendly water-tree-resistant waterproof medium-voltage power cable |
| CN104575840A (en) * | 2015-01-07 | 2015-04-29 | 安徽弘博电缆集团有限公司 | Water blocking type crosslinking polyethylene insulating power cable |
| CN105070390A (en) * | 2015-08-21 | 2015-11-18 | 安徽华星电缆集团有限公司 | Power cable |
| CN105405515A (en) * | 2015-12-09 | 2016-03-16 | 江苏荣宜电缆有限公司 | Self-bearing type polyethylene-insulating waterproof power cable |
| CN105679453A (en) * | 2016-04-25 | 2016-06-15 | 无锡市曙光电缆有限公司 | Anti-corrosion water-resistant crosslinked polyethylene insulated power cable |
| CN105741926A (en) * | 2016-04-13 | 2016-07-06 | 安徽新华电缆(集团)有限公司 | Flexible waterproof cable |
| CN107507672A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of high waterproof high-pressure cable |
| CN109192370A (en) * | 2018-09-11 | 2019-01-11 | 台山市电缆厂有限责任公司 | A kind of polyvinyl chloride cable |
| CN115083675A (en) * | 2022-07-22 | 2022-09-20 | 宇盛电气有限公司 | Cross-linked polyethylene insulated alternating-current underwater cable and preparation process thereof |
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| EP0209899A2 (en) * | 1985-07-23 | 1987-01-28 | The Furukawa Electric Co., Ltd. | Water impervious rubber or plastic insulated power cable |
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| CN101562064A (en) * | 2009-05-22 | 2009-10-21 | 江苏亨通电力电缆有限公司 | Rated voltage of 35kv or below shallow sea wind farm photoelectrical transmission composite cable |
| CN201584213U (en) * | 2010-03-05 | 2010-09-15 | 九星控股集团有限公司 | Water-resisting steel wire cross-linking power cable |
| CN101937738A (en) * | 2010-09-16 | 2011-01-05 | 远东电缆有限公司 | Cable for shallow sea wind power generation |
| CN201698820U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulation steel strip armored polyethylene sheath power cable |
| CN202473391U (en) * | 2012-03-13 | 2012-10-03 | 重庆泰山电缆有限公司 | Crosslinked polyethylene insulated photoelectric composite direct-current submarine power cable |
| CN202677945U (en) * | 2012-07-20 | 2013-01-16 | 安徽国电电缆集团有限公司 | An anti-water-tree medium-pressure crosslinked single-core cable |
| CN203521017U (en) * | 2013-09-16 | 2014-04-02 | 无锡市长城电线电缆有限公司 | Crosslinking polyethylene insulation waterproof power cable |
-
2013
- 2013-09-16 CN CN201310420411.1A patent/CN103489528A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0209899A2 (en) * | 1985-07-23 | 1987-01-28 | The Furukawa Electric Co., Ltd. | Water impervious rubber or plastic insulated power cable |
| CN201069676Y (en) * | 2007-04-23 | 2008-06-04 | 特变电工山东鲁能泰山电缆有限公司 | Cross-linked polythene insulation power cable based on fully water retarding and resisting tree |
| CN101562064A (en) * | 2009-05-22 | 2009-10-21 | 江苏亨通电力电缆有限公司 | Rated voltage of 35kv or below shallow sea wind farm photoelectrical transmission composite cable |
| CN201584213U (en) * | 2010-03-05 | 2010-09-15 | 九星控股集团有限公司 | Water-resisting steel wire cross-linking power cable |
| CN201698820U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulation steel strip armored polyethylene sheath power cable |
| CN101937738A (en) * | 2010-09-16 | 2011-01-05 | 远东电缆有限公司 | Cable for shallow sea wind power generation |
| CN202473391U (en) * | 2012-03-13 | 2012-10-03 | 重庆泰山电缆有限公司 | Crosslinked polyethylene insulated photoelectric composite direct-current submarine power cable |
| CN202677945U (en) * | 2012-07-20 | 2013-01-16 | 安徽国电电缆集团有限公司 | An anti-water-tree medium-pressure crosslinked single-core cable |
| CN203521017U (en) * | 2013-09-16 | 2014-04-02 | 无锡市长城电线电缆有限公司 | Crosslinking polyethylene insulation waterproof power cable |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794276A (en) * | 2014-02-17 | 2014-05-14 | 无锡市长城电线电缆有限公司 | Flexible high-voltage direct-current cross-linked polyethylene insulation power cable |
| CN104167248A (en) * | 2014-09-10 | 2014-11-26 | 中天科技海缆有限公司 | Environment-friendly water-tree-resistant waterproof medium-voltage power cable |
| CN104575840A (en) * | 2015-01-07 | 2015-04-29 | 安徽弘博电缆集团有限公司 | Water blocking type crosslinking polyethylene insulating power cable |
| CN105070390A (en) * | 2015-08-21 | 2015-11-18 | 安徽华星电缆集团有限公司 | Power cable |
| CN105405515A (en) * | 2015-12-09 | 2016-03-16 | 江苏荣宜电缆有限公司 | Self-bearing type polyethylene-insulating waterproof power cable |
| CN105741926A (en) * | 2016-04-13 | 2016-07-06 | 安徽新华电缆(集团)有限公司 | Flexible waterproof cable |
| CN105679453A (en) * | 2016-04-25 | 2016-06-15 | 无锡市曙光电缆有限公司 | Anti-corrosion water-resistant crosslinked polyethylene insulated power cable |
| CN107507672A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of high waterproof high-pressure cable |
| CN109192370A (en) * | 2018-09-11 | 2019-01-11 | 台山市电缆厂有限责任公司 | A kind of polyvinyl chloride cable |
| CN115083675A (en) * | 2022-07-22 | 2022-09-20 | 宇盛电气有限公司 | Cross-linked polyethylene insulated alternating-current underwater cable and preparation process thereof |
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Application publication date: 20140101 |