CN104575840A - Water blocking type crosslinking polyethylene insulating power cable - Google Patents
Water blocking type crosslinking polyethylene insulating power cable Download PDFInfo
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- CN104575840A CN104575840A CN201510007694.6A CN201510007694A CN104575840A CN 104575840 A CN104575840 A CN 104575840A CN 201510007694 A CN201510007694 A CN 201510007694A CN 104575840 A CN104575840 A CN 104575840A
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Abstract
The invention discloses a water blocking type crosslinking polyethylene insulating power cable. The water blocking type crosslinking polyethylene insulating power cable comprises a conductor, a conductor shielding layer, an insulation extrusion layer, a copper wire shielding layer, an aluminum-plastic composite belt and an outer protection layer. The conductor is a water blocking conductor. The annular face of the conductor shielding layer is provided with grooves, and the grooves are internally provided with water stop rings. An internal hydrophilic expansion water stop layer is arranged between the insulation extrusion layer and the copper wire shielding layer, and the copper wire shielding layer is pressed into the internal hydrophilic expansion water stop layer. An external hydrophilic expansion water stop layer is arranged between the copper wire shielding layer and the aluminum-plastic composite belt, and the side, opposite to the aluminum-plastic composite belt, of the external hydrophilic expansion water stop layer is provided with a second bonding layer. The copper wire shielding layer is located between the internal hydrophilic expansion water stop layer and the external hydrophilic expansion water stop layer. According to the water blocking type crosslinking polyethylene insulating power cable, through the excellent water blocking performance, steam or moisture is prevented from longitudinally permeating from a gap in the insulating outer copper wire shielding layer or a gap in the conductor, and the problem that water treeing occurs easily in the crosslinking polyethylene insulating power cable is solved.
Description
Technical field
The present invention relates to power transmission technology field, particularly relate to a kind of waterproofing type power cable with cross-linked polyethylene insulation.
Background technology
Power cable with cross-linked polyethylene insulation is owing to having excellent electric property and mechanical and physical performance, and production technology is simple, portable construction, transmission capacity are large, mounting and installation and maintaining is convenient, not by advantages such as drop restrictions, extensively be subject to user to welcome, particularly along with the fast development of Chinese national economy, deepening continuously of capital construction, electricity needs sharply increases, and power cable with cross-linked polyethylene insulation product consumption also significantly increases year by year.Power cable with cross-linked polyethylene insulation causes moisture or moisture to enter in cable insulation in laying installation with when running, moisture or moisture are once after entering cable insulation, just likely from the insulation gap of brass wire shielding or the gap longtitudinal dispersion from conductor, jeopardize whole cable system.Cable after making moist can produce " water tree " phenomenon under high electric field action, thus makes crosslinked polyetylene insulated hydraulic performance decline, finally causes cable insulation to puncture.
Summary of the invention
Based on the technical problem that above-mentioned background technology exists, the present invention proposes a kind of waterproofing type power cable with cross-linked polyethylene insulation, solve power cable with cross-linked polyethylene insulation and easily occur " water tree " problem, improve crosslinked polyetylene insulated performance and improve, avoid cable insulation punch-through.
The present invention proposes a kind of waterproofing type power cable with cross-linked polyethylene insulation, comprise: conductor, be coated on the conductor shield of conductor outside, the insulation being coated on conductor shield outside extrudes layer, be coated on the shielding layer of copper wires that insulation extrudes layer outside, be coated on the aluminium-plastic tape of shielding layer of copper wires outside, and be coated on the outer jacket of aluminium-plastic tape outside; Wherein, conductor adopts water-blocking conductor; The anchor ring of conductor shield is provided with groove, and groove is provided with several, along conductor shield periphery genesis analysis, is provided with seal ring and the outer surface of seal ring flushes with the outer surface of conductor shield in each groove; Extrude between layer and shielding layer of copper wires in insulation and be provided with interior water-swellable sealing layer, interior water-swellable sealing layer and insulation extrude between layer and are provided with the first tack coat, interior water-swellable sealing layer is elastic layer, and brass wire shielding is laminated in interior water-swellable sealing layer and makes the outer surface of interior water-swellable sealing layer exceed the outer surface of shielding layer of copper wires; Be provided with affair water expansion water-stop layer between shielding layer of copper wires and aluminium-plastic tape, affair water expansion water-stop layer is provided with the second tack coat in the side relative with aluminium-plastic tape, and the second tack coat adopts polythene material to be made; Affair water expansion water-stop layer is provided with the 3rd tack coat in the side relative with shielding layer of copper wires, and affair water expansion water-stop layer is bonded as one by the 3rd tack coat and interior water-swellable sealing layer and is fixed on therebetween by shielding layer of copper wires.
Preferably, affair water expansion water-stop layer adopts super absorbent resin material to be made.
Preferably, conductor presses stranded to form and the outside of every root wire all scribbles binding agent by waterstop and the staggered multiple conducting wires interted between waterstop.
Preferably, outer jacket adopts polyethylene agent bag to form.
In the present invention, conductor adopts water-blocking conductor; The anchor ring of conductor shield is provided with groove, and groove is provided with several, along conductor shield periphery genesis analysis, in each groove, is provided with seal ring and seal ring; Extrude conductor shield and conductor after seal ring water-swellable, block moisture or the moisture gap location longtitudinal dispersion by conductor; Extrude between layer and shielding layer of copper wires in insulation and be provided with interior water-swellable sealing layer, interior water-swellable sealing layer is elastic layer, and brass wire shielding is laminated in interior water-swellable sealing layer and makes the outer surface of interior water-swellable sealing layer exceed the outer surface of shielding layer of copper wires; Affair water expansion water-stop layer is provided with between shielding layer of copper wires and aluminium-plastic tape, affair water expansion water-stop layer is provided with the 3rd tack coat in the side relative with shielding layer of copper wires, affair water expansion water-stop layer is bonded as one by the 3rd tack coat and interior water-swellable sealing layer and is fixed on therebetween by shielding layer of copper wires, make brass wire shielding and blind-mate between interior water-swellable sealing layer and affair water expansion water-stop layer, the path that blocking-up aqueous vapor or moisture are longitudinally infiltrated by brass wire shielding; And outer jacket adopts polyethylene to be made, when extruding outer jacket, because the polyethylene film of plastic-aluminum combined belt surface under the high temperature of outer jacket melt body and the effect of pressure and the inner surface of outer protective polyethylene layer are bonded together, the approach making moisture infiltrate cable is played excellent resistance effect by blocking completely.In sum, the block-water performance that the present invention is excellent, effectively prevent aqueous vapor or moisture from the insulation gap of brass wire shielding or the gap longtitudinal dispersion from conductor, solve power cable with cross-linked polyethylene insulation and easily occur " water tree " problem, thus crosslinked polyetylene insulated performance is improved, avoid cable insulation punch-through, extend the useful life of power cable with cross-linked polyethylene insulation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of waterproofing type power cable with cross-linked polyethylene insulation that the present invention proposes.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
As shown in Figure 1, Fig. 1 is the structural representation of a kind of waterproofing type power cable with cross-linked polyethylene insulation that the present invention proposes.
With reference to Fig. 1, a kind of waterproofing type power cable with cross-linked polyethylene insulation that the embodiment of the present invention proposes, comprise: comprising: conductor 1, be coated on the conductor shield 2 of conductor 1 outside, the insulation being coated on conductor shield 2 outside extrudes layer 3, be coated on the shielding layer of copper wires 4 that insulation extrudes layer 3 outside, be coated on the aluminium-plastic tape 5 of shielding layer of copper wires 4 outside, and be coated on the outer jacket 6 of aluminium-plastic tape 5 outside, outer jacket 6 adopts polyethylene to extrude and forms, when extruding outer jacket 6, because under the high temperature of outer jacket 6 melt body and the effect of pressure, the polyethylene film on aluminium-plastic tape 5 surface and the inner surface of outer protective polyethylene layer 6 are bonded together, the approach making moisture infiltrate cable is played excellent resistance effect by blocking completely.
Conductor 1 presses stranded to form and the outside of every root wire all scribbles binding agent by waterstop and the staggered multiple conducting wires interted between waterstop; The anchor ring of conductor shield 2 is provided with groove, groove is provided with several, along conductor shield 2 periphery genesis analysis, seal ring 7 is provided with and the outer surface of seal ring 7 flushes with the outer surface of conductor shield 2 in each groove, extruding conductor shield 2 and conductor 1 after seal ring 7 makes moist and expands, blocks moisture or the moisture gap location longtitudinal dispersion by conductor 1.
Extrude between layer 3 and shielding layer of copper wires 4 in insulation and be provided with interior water-swellable sealing layer 8, interior water-swellable sealing layer 8 and insulation extrude between layer 3 and are provided with the first tack coat 9, interior water-swellable sealing layer 8 is elastic layer, and shielding layer of copper wires 4 is pressed in interior water-swellable sealing layer 8 and makes the outer surface of interior water-swellable sealing layer 8 exceed the outer surface of shielding layer of copper wires 4; Be provided with affair water expansion water-stop layer 10 between aluminium-plastic tape 5 and shielding layer of copper wires 4, affair water expansion water-stop layer 10 is provided with the second tack coat 11 in the side relative with aluminium-plastic tape 5.
Affair water expansion water-stop layer 10 is provided with the 3rd tack coat 12 in the side relative with shielding layer of copper wires 4, affair water expansion water-stop layer 10 is bonded as one by the 3rd tack coat 12 and interior water-swellable sealing layer 8 and is fixed on therebetween by shielding layer of copper wires 4, when coordinating with interior water-swellable sealing layer 8 after affair water expansion water-stop layer 10 water-swellable, shielding layer of copper wires 4 is wrapped up completely, the path that blocking-up aqueous vapor or moisture are longitudinally infiltrated by brass wire shielding; Affair water expansion water-stop layer 10 adopts super absorbent resin material to be made, super absorbent resin has high-expansion, high hydroscopic resin gelinite volume after water suction expands hundreds of times immediately, rapid occlusion penetrating passage, and the gel after water suction is under impressed pressure, water is also not easy therefrom to extrude, diffusion inside after avoiding absorbing water, and the longitudinal direction effectively blocking water is infiltrated.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. a waterproofing type power cable with cross-linked polyethylene insulation, it is characterized in that, comprise: conductor (1), be coated on the conductor shield (2) that conductor (1) is outside, the insulation being coated on conductor shield (2) outside extrudes layer (3), be coated on insulation and extrude the outside shielding layer of copper wires (4) of layer (3), be coated on the aluminium-plastic tape (5) that shielding layer of copper wires (4) is outside, and be coated on the outside outer jacket (6) of aluminium-plastic tape (5); Wherein, conductor (1) adopts water-blocking conductor; The anchor ring of conductor shield (2) is provided with groove, groove is provided with several, along conductor shield (2) periphery genesis analysis, in each groove, be provided with seal ring (7) and the outer surface of seal ring (7) flushes with the outer surface of conductor shield (2); Extrude between layer (3) and shielding layer of copper wires (4) in insulation and be provided with interior water-swellable sealing layer (8), interior water-swellable sealing layer (8) and insulation extrude between layer (3) and are provided with the first tack coat (9), interior water-swellable sealing layer (8) is elastic layer, makes the outer surface of interior water-swellable sealing layer (8) exceed the outer surface of shielding layer of copper wires (4) in shielding layer of copper wires (4) press-in in water-swellable sealing layer (8); Be provided with affair water expansion water-stop layer (10) between shielding layer of copper wires (4) and aluminium-plastic tape (5), affair water expansion water-stop layer (10) is provided with the second tack coat (11) in the side relative with aluminium-plastic tape (5); Affair water expansion water-stop layer (10) is provided with the 3rd tack coat (12) in the side relative with shielding layer of copper wires (4), and affair water expansion water-stop layer (10) is bonded as one by the 3rd tack coat (12) and interior water-swellable sealing layer (8) and is fixed on therebetween by shielding layer of copper wires (4).
2. waterproofing type power cable with cross-linked polyethylene insulation according to claim 1, is characterized in that, affair water expansion water-stop layer (10) adopts super absorbent resin material to be made.
3. waterproofing type power cable with cross-linked polyethylene insulation according to claim 1, is characterized in that, conductor (1) presses stranded to form and the outside of every root wire all scribbles binding agent by waterstop and the staggered multiple conducting wires interted between waterstop.
4. waterproofing type power cable with cross-linked polyethylene insulation according to claim 1, is characterized in that, outer jacket (6) adopts polyethylene to extrude and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007694.6A CN104575840B (en) | 2015-01-07 | 2015-01-07 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007694.6A CN104575840B (en) | 2015-01-07 | 2015-01-07 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
Publications (2)
| Publication Number | Publication Date |
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| CN104575840A true CN104575840A (en) | 2015-04-29 |
| CN104575840B CN104575840B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510007694.6A Expired - Fee Related CN104575840B (en) | 2015-01-07 | 2015-01-07 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
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| CN (1) | CN104575840B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504818A (en) * | 2016-12-27 | 2017-03-15 | 山东华凌电缆有限公司 | The naval vessel insulation direction waterproof type communication cable of second third |
| CN107195368A (en) * | 2017-06-05 | 2017-09-22 | 安徽龙芯电力电线有限公司 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
| CN107464616A (en) * | 2017-09-05 | 2017-12-12 | 福建通宇电缆有限公司 | A kind of water proof fire retardant composite cable |
| CN109671528A (en) * | 2017-10-16 | 2019-04-23 | 矢崎总业株式会社 | The waterproof construction and waterproof method of shielded cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595431A (en) * | 1985-01-28 | 1986-06-17 | At&T Technologies, Inc. | Methods of and apparatus for applying a waterproofing material to a cable core wrap |
| CN101071658A (en) * | 2007-05-17 | 2007-11-14 | 上海亚龙工业（集团）有限公司 | Waterproof power cable and its manufacturing method |
| 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 |
| CN204270720U (en) * | 2015-01-07 | 2015-04-15 | 安徽弘博电缆集团有限公司 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
-
2015
- 2015-01-07 CN CN201510007694.6A patent/CN104575840B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595431A (en) * | 1985-01-28 | 1986-06-17 | At&T Technologies, Inc. | Methods of and apparatus for applying a waterproofing material to a cable core wrap |
| CN101071658A (en) * | 2007-05-17 | 2007-11-14 | 上海亚龙工业（集团）有限公司 | Waterproof power cable and its manufacturing method |
| 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 |
| CN204270720U (en) * | 2015-01-07 | 2015-04-15 | 安徽弘博电缆集团有限公司 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504818A (en) * | 2016-12-27 | 2017-03-15 | 山东华凌电缆有限公司 | The naval vessel insulation direction waterproof type communication cable of second third |
| CN107195368A (en) * | 2017-06-05 | 2017-09-22 | 安徽龙芯电力电线有限公司 | A kind of waterproofing type power cable with cross-linked polyethylene insulation |
| CN107464616A (en) * | 2017-09-05 | 2017-12-12 | 福建通宇电缆有限公司 | A kind of water proof fire retardant composite cable |
| CN109671528A (en) * | 2017-10-16 | 2019-04-23 | 矢崎总业株式会社 | The waterproof construction and waterproof method of shielded cable |
| US11177056B2 (en) | 2017-10-16 | 2021-11-16 | Yazaki Corporation | Waterproofing structure and waterproofing method for shielded cable |
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| Publication number | Publication date |
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| CN104575840B (en) | 2016-12-07 |
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Granted publication date: 20161207 Termination date: 20190107 |