CN203521017U - Crosslinking polyethylene insulation waterproof power cable - Google Patents
Crosslinking polyethylene insulation waterproof power cable Download PDFInfo
- Publication number
- CN203521017U CN203521017U CN201320572315.4U CN201320572315U CN203521017U CN 203521017 U CN203521017 U CN 203521017U CN 201320572315 U CN201320572315 U CN 201320572315U CN 203521017 U CN203521017 U CN 203521017U
- Authority
- CN
- China
- Prior art keywords
- layer
- waterproof
- water
- polyethylene
- insulation
- 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.)
- Expired - Fee Related
Links
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 29
- -1 polyethylene Polymers 0.000 title claims abstract description 29
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 29
- 238000009413 insulation Methods 0.000 title claims abstract description 21
- 238000004132 cross linking Methods 0.000 title claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000005246 galvanizing Methods 0.000 abstract 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 5
- 239000004703 cross-linked polyethylene Substances 0.000 description 5
- 240000005572 Syzygium cordatum Species 0.000 description 3
- 235000006650 Syzygium cordatum Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036314 physical performance Effects 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a crosslinking polyethylene insulation waterproof power cable comprising a cable core formed by twisting a plurality of insulation wire cores; the insulation wire core comprises a waterproof conductor, and a conductor shield layer, a crosslinking polyethylene insulating layer, an insulation shield layer, a semiconduction waterproof layer and a metal shield layer extruded outside the waterproof conductor in sequence; a waterproof rope filling layer is arranged in the gap of the cable core; the cable core is extruded by a first waterproof belt taped covering; the first waterproof belt taped covering is wrapped by a plastic-aluminum longitudinal cladding extruded in sequence by a polyethylene separating layer, a galvanizing steel wire armoring layer, a second waterproof belt taped covering and a polyethylene oversheath. The crosslinking polyethylene insulation waterproof power cable has high radial and vertical waterproof characteristics, is long in cable service life, and stable in operation.
Description
Technical field
The utility model belongs to power cable field, is specifically related to a kind of crosslinking polyethylene insulation water-proof power cable.
Background technology
The application history of existing thirties years of domestic crosslinked polyethylene (XLPE) insulated power cable, 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 advantages such as drop restriction, in electric power system, be widely used.
In the 90's of last century, expert once investigated to domestic certain iron and steel corporation, found the crosslinked cable that lays the eighties, and owing to not adopting good stop water, cable cannot move, and cable does not reach 30 years of designing requirement useful life.Through to failure cable dissection and analysis, its main cause is that XLPE cable is laying and run duration, moisture or moisture can along cable longitudinally 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.
Utility model content
The purpose of this utility model be 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 described in the utility model, comprise cable core, its cable core is by some stranded the forming of insulated wire cores, and described insulated wire cores is by water-blocking conductor and be extruded in successively the conductor shield outside water-blocking conductor, crosslinked polyetylene insulated layer, insulation screen, semiconductive water blocking layer, metal screen layer and form; Cable core gap location is provided with 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 band Duplication is bandwidth 18%～20%.
The vertical covering of described plastic-aluminum adopts YLY type polyethylene double-sided aluminum plastic composite band, and composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, longitudinally coatedly puts up width and is greater than 6.0mm.
The beneficial effects of the utility model are:
The utility model wrapped semiconductive waterstop between each layer when conductor is stranded, effectively stop moisture to pass through the stranded gap water inlet of conductor cable inner, cable wrapped semiconductive waterstop after insulation shielding stops moisture to enter cable inside by the gap between insulation shielding and metal screen layer effectively, after cable cabling He after wire armoring, all can produce gap, therefore, wrapped waterstop all after its operation, prevent that moisture from entering from intermediate gap, this utility model adopts plastic-aluminum combined integrated sheath as radial resistivity water layer, by the aluminium-plastic tape of vertical bag and the polyethylene isolation layer acting in conjunction extruding, reach the object that blocks water.Its mechanism that blocks water is: when extruding polyethylene isolation layer, the effect of melting 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 aluminum plastic composite belt longitudinal bag also obtains good bonding simultaneously.Thereby stoped the infiltration of moisture, reached good block-water effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of crosslinking polyethylene insulation water-proof power cable described in the utility model, comprise cable core, its cable core is by some stranded the forming of insulated wire cores, and described insulated wire cores is by water-blocking conductor 1 and be extruded in successively the conductor shield 2 outside water-blocking conductor 1, crosslinked polyetylene insulated layer 3, insulation screen 4, semiconductive water blocking layer 5, metal screen layer 6 and form; 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 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 composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, longitudinally coatedly puts up width and is greater than 6.0mm.
The utility model provides a kind of crosslinking polyethylene insulation water-proof power cable; the above is only preferred implementation method of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (3)
1. a crosslinking polyethylene insulation water-proof power cable, comprise cable core, its cable core, by some stranded the forming of insulated wire 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; 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 band Duplication is bandwidth 18%～20%.
3. crosslinking polyethylene insulation water-proof power cable according to claim 1, it is characterized in that: the vertical covering (9) of described plastic-aluminum adopts YLY type polyethylene double-sided aluminum plastic composite band, composite band gross thickness is 0.32mm, and aluminum layer thickness is 0.20mm, longitudinally coatedly puts up width and is greater than 6.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572315.4U CN203521017U (en) | 2013-09-16 | 2013-09-16 | Crosslinking polyethylene insulation waterproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572315.4U CN203521017U (en) | 2013-09-16 | 2013-09-16 | Crosslinking polyethylene insulation waterproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521017U true CN203521017U (en) | 2014-04-02 |
Family
ID=50379909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320572315.4U Expired - Fee Related CN203521017U (en) | 2013-09-16 | 2013-09-16 | Crosslinking polyethylene insulation waterproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521017U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489528A (en) * | 2013-09-16 | 2014-01-01 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulating and water-blocking power cable |
| CN107301900A (en) * | 2017-06-22 | 2017-10-27 | 重庆鸽牌电线电缆有限公司 | 35KV multilayer flashing cables |
| CN109994272A (en) * | 2019-04-04 | 2019-07-09 | 安徽渡江电缆集团有限公司 | 5G signal tower controls cable with anti-high reject signal |
-
2013
- 2013-09-16 CN CN201320572315.4U patent/CN203521017U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489528A (en) * | 2013-09-16 | 2014-01-01 | 无锡市长城电线电缆有限公司 | Crosslinked polyethylene insulating and water-blocking power cable |
| CN107301900A (en) * | 2017-06-22 | 2017-10-27 | 重庆鸽牌电线电缆有限公司 | 35KV multilayer flashing cables |
| CN109994272A (en) * | 2019-04-04 | 2019-07-09 | 安徽渡江电缆集团有限公司 | 5G signal tower controls cable with anti-high reject signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20180916 |