CN104575836A - Cross-linked polyethylene insulated water-blocked power cable - Google Patents
Cross-linked polyethylene insulated water-blocked power cable Download PDFInfo
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- CN104575836A CN104575836A CN201310506148.8A CN201310506148A CN104575836A CN 104575836 A CN104575836 A CN 104575836A CN 201310506148 A CN201310506148 A CN 201310506148A CN 104575836 A CN104575836 A CN 104575836A
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Abstract
The invention discloses a cross-linked polyethylene insulated water-blocked power cable and relates to a power cable. The cross-linked polyethylene insulated water-blocked power cable comprises a cable conductor, wherein a water blocking tape lapping cabling layer, an aluminium-plastic composite tape waterproof layer, a polyethylene lining layer, a steel wire armoring layer, a first water blocking tape lapping layer and a high-density polyethylene outer sheath layer are sequentially arranged outside the cable conductor; the cable conductor comprises three strands of cores; each strand of core comprises a waterproof conductor formed by stranding a plurality of annealed bare copper wires and waterproof spun yarns; a conductor shielding layer, an insulating layer and an insulating shielding layer are respectively and sequentially extruded outside each strand of waterproof conductor in a three-layer co-extrusion manner; a semi-conducting resistor water-blocking expansion tape layer, a copper shielding layer and a second water-blocking tape lapping layer are further sequentially arranged outside the insulating shielding layer of each strand of core; a waterproof rubber filled layer is arranged between the cable conductor and the water blocking tape lapping cabling layer. The cross-linked polyethylene insulated water-blocked power cable has excellent waterproof and water-tree retardant performance and has high electric property; stability and safety of power supply of a power network line are improved; the service life of the cable is prolonged; the power supply cost is reduced.
Description
Technical field
The present invention relates to a kind of power cable, be specifically related to a kind of crosslinking polyethylene insulation water-proof power cable.
Background technology
The application of domestic crosslinked polyethylene (XLPE) insulated power cable has the history of thirties years, because of the electric and mechanical and physical performance that it is good, and have that production technology is simple, portable construction, transmission capacity large, mounting and installation and maintaining is convenient, not by advantages such as drop restrictions, be widely used in electric power system.
Along with people are to the research of cable insulation water suction and water tree and the intensification of understanding, people more and more recognize the importance of water resistance to power cable with cross-linked polyethylene insulation, according to statistics, in domestic electrical network 10-35 kV electric power system, direct buried XLPE insulated cable there is no employing stop water, generally grow large water gaging tree after 8 ~ 12 years in operation, breakdown accident occurs, has a strong impact on the safe operation of electrical network.Therefore, the cable technology that blocks water all has very important significance for the reliability and life-span ensureing XLPE cable.In level of ground water higher or long-term area of heavy rainfull (such as China the Changjiang river areas to the south), increasing user proposes the requirement blocked water to cable.
Summary of the invention
The present invention is the deficiency in order to overcome common cable, provides a kind of crosslinking polyethylene insulation water-proof power cable that can meet client's needs.
The present invention includes cable core, outside described cable core, set gradually the wrapped stranding layer of waterstop, aluminium-plastic tape water blocking layer, polyethylene liner layer, steel wire armor layer, the first waterstop lapping layer and high-density polyethylene outer sheath layer; Described cable core comprises compenzine core, and per share core comprises respectively by the many annealing bare copper wires water-blocking conductor stranded with the spun yarn that blocks water, outside described per share water-blocking conductor, extrude conductor shield, insulating barrier, insulation screen successively respectively through three-layer co-extruded; Outside the insulation screen of described per share core, be also provided with semiconductive respectively successively to block water expansion belt, copper strip shielding layer and the second waterstop lapping layer; Between described cable core and the wrapped stranding layer of waterstop, the rubber filling layer that blocks water is set.
Water-blocking conductor of the present invention adopts to press and pulls out technique, and make the coefficient that presses of conductor reach more than 0.94, block-water effect is good; Adopt three-layer co-extruded technology and longitudinal radial water-resisting technology, structure innovation, material is novel, cable is made to have excellent blocking water and water tree resistant property, high electrical performance, improve stability and fail safe that power network line powers, extend cable useful life, reduce power supply cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention includes cable core 1, outside cable core, set gradually the wrapped stranding layer 2 of waterstop, aluminium-plastic tape water blocking layer 3, polyethylene liner layer 4, steel wire armor layer 5, first waterstop lapping layer 6 and high-density polyethylene outer sheath layer 7; Cable core 1 comprises compenzine core 1-1, per share core 1-1 comprises respectively by the many annealing bare copper wires water-blocking conductor 8 stranded with the spun yarn that blocks water, outside per share water-blocking conductor 8, extrude conductor shield 9, insulating barrier 10, insulation screen 11 successively respectively through three-layer co-extruded; Outside the insulation screen 11 of per share core 1-1, be also provided with semiconductive respectively successively to block water expansion belt 12, copper strip shielding layer 13 and the second waterstop lapping layer 14; Between cable core 1 and the wrapped stranding layer 2 of waterstop, the rubber filling layer 15 that blocks water is set.
Claims (1)
1. crosslinking polyethylene insulation water-proof power cable, it is characterized in that: comprise cable core, outside described cable core, set gradually the wrapped stranding layer of waterstop, aluminium-plastic tape water blocking layer, polyethylene liner layer, steel wire armor layer, the first waterstop lapping layer and high-density polyethylene outer sheath layer; Described cable core comprises compenzine core, and per share core comprises respectively by the many annealing bare copper wires water-blocking conductor stranded with the spun yarn that blocks water, outside described per share water-blocking conductor, extrude conductor shield, insulating barrier, insulation screen successively respectively through three-layer co-extruded; Outside the insulation screen of described per share core, be also provided with semiconductive respectively successively to block water expansion belt, copper strip shielding layer and the second waterstop lapping layer; Between described cable core and the wrapped stranding layer of waterstop, the rubber filling layer that blocks water is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310506148.8A CN104575836A (en) | 2013-10-24 | 2013-10-24 | Cross-linked polyethylene insulated water-blocked power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310506148.8A CN104575836A (en) | 2013-10-24 | 2013-10-24 | Cross-linked polyethylene insulated water-blocked power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104575836A true CN104575836A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310506148.8A Pending CN104575836A (en) | 2013-10-24 | 2013-10-24 | Cross-linked polyethylene insulated water-blocked power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104575836A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900330A (en) * | 2015-05-13 | 2015-09-09 | 无锡市恒汇电缆有限公司 | Halogen-free mud resistant medium voltage power cable for offshore oil platform and manufacturing method thereof |
| CN105070390A (en) * | 2015-08-21 | 2015-11-18 | 安徽华星电缆集团有限公司 | Power cable |
| CN106205893A (en) * | 2016-08-01 | 2016-12-07 | 国能子金电缆南通有限公司 | A kind of frame winch indulges bag apparatus and the electric power transmission water repellent electric cable utilizing it to produce |
| CN107945973A (en) * | 2017-12-28 | 2018-04-20 | 无锡江南电缆有限公司 | A kind of water-resistant power cable |
| CN109273161A (en) * | 2018-09-07 | 2019-01-25 | 河南讯达电缆有限公司 | Double buried cables that block water |
-
2013
- 2013-10-24 CN CN201310506148.8A patent/CN104575836A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900330A (en) * | 2015-05-13 | 2015-09-09 | 无锡市恒汇电缆有限公司 | Halogen-free mud resistant medium voltage power cable for offshore oil platform and manufacturing method thereof |
| CN105070390A (en) * | 2015-08-21 | 2015-11-18 | 安徽华星电缆集团有限公司 | Power cable |
| CN106205893A (en) * | 2016-08-01 | 2016-12-07 | 国能子金电缆南通有限公司 | A kind of frame winch indulges bag apparatus and the electric power transmission water repellent electric cable utilizing it to produce |
| CN107945973A (en) * | 2017-12-28 | 2018-04-20 | 无锡江南电缆有限公司 | A kind of water-resistant power cable |
| CN109273161A (en) * | 2018-09-07 | 2019-01-25 | 河南讯达电缆有限公司 | Double buried cables that block water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |