CN104575840B - A kind of waterproofing type power cable with cross-linked polyethylene insulation - Google Patents
A kind of waterproofing type power cable with cross-linked polyethylene insulation Download PDFInfo
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- CN104575840B CN104575840B CN201510007694.6A CN201510007694A CN104575840B CN 104575840 B CN104575840 B CN 104575840B CN 201510007694 A CN201510007694 A CN 201510007694A CN 104575840 B CN104575840 B CN 104575840B
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- water
- layer
- conductor
- copper wires
- insulation
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Abstract
The invention discloses a kind of waterproofing type power cable with cross-linked polyethylene insulation, including: conductor, conductor shield, insulation extrudes layer, shielding layer of copper wires, aluminium-plastic tape, and outer jacket；Conductor uses water-blocking conductor；The anchor ring of conductor shield is provided with groove, is provided with seal ring in groove；Extruding in insulation and be provided with interior water-swellable sealing layer between layer and shielding layer of copper wires, brass wire shielding is laminated in interior water-swellable sealing layer；Being 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；Shielding layer of copper wires is between interior water-swellable sealing layer and affair water expansion water-stop layer.The block-water performance that the present invention is excellent, it is to avoid aqueous vapor or moisture, from the gap of the brass wire shielding that insulate or from the gap longtitudinal dispersion of conductor, solve power cable with cross-linked polyethylene insulation and " water tree " problem easily occur.
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
Simply, portable construction, transmission capacity be big, mounting and installation and maintaining is convenient, not by advantages such as drop are limited, be the most extensively subject to
User welcomes, and in particular with the fast development of Chinese national economy, deepening continuously of capital construction, electricity needs drastically increases
Adding, power cable with cross-linked polyethylene insulation product consumption the most significantly increases.Power cable with cross-linked polyethylene insulation exists
Moisture or moisture is caused to enter in cable insulation, after moisture or moisture once enter cable insulation, just when laying installation and operation
Likely from the gap of the brass wire shielding that insulate or from the gap longtitudinal dispersion of conductor, jeopardize whole cable system.After making moist
Cable can produce " water tree " phenomenon under high electric field action, so that crosslinked polyetylene insulated hydraulic performance decline, ultimately results in electricity
Cable insulation breakdown.
Summary of the invention
The technical problem existed based on above-mentioned background technology, the present invention proposes a kind of crosslinked polyetylene insulated electric power of waterproofing type
Cable, solves power cable with cross-linked polyethylene insulation and " water tree " problem easily occurs, improve crosslinked polyetylene insulated performance, keep away
Exempt from cable insulation punch-through.
The present invention proposes a kind of waterproofing type power cable with cross-linked polyethylene insulation, including: conductor, it is coated on outside conductor
Conductor shield, be coated on the insulation outside conductor shield and extrude layer, being coated on insulation extrudes the brass wire shielding outside layer
Layer, is coated on the aluminium-plastic tape outside shielding layer of copper wires, and is coated on the outer jacket outside aluminium-plastic tape；Wherein, lead
Body uses water-blocking conductor；The anchor ring of conductor shield is provided with groove, and groove is provided with several, vertical along conductor shield periphery
To distribution, the outer surface of the outer surface and conductor shield that are provided with seal ring and seal ring in each groove flushes；In insulation
Extruding and be provided with interior water-swellable sealing layer between layer and shielding layer of copper wires, interior water-swellable sealing layer and insulation extrude and set between layer
Having the first tack coat, interior water-swellable sealing layer is elastic layer, and brass wire shielding makes interior chance in being laminated into interior water-swellable sealing layer
The outer surface of water expansion water-stop layer exceeds the outer surface of shielding layer of copper wires；Affair it is provided with between shielding layer of copper wires and aluminium-plastic tape
Water expansion water-stop layer, affair water expansion water-stop layer is provided with the second tack coat, the second bonding in the side relative with aluminium-plastic tape
Layer uses polythene material to be made；Affair water expansion water-stop layer is provided with the 3rd bonding in the side relative with shielding layer of copper wires
Layer, affair water expansion water-stop layer is bonded as one with interior water-swellable sealing layer by the 3rd tack coat and is fixed by shielding layer of copper wires
In between.
Preferably, affair water expansion water-stop layer uses super absorbent resin material to be made.
Preferably, conductor by waterstop and the staggered multiple conducting wires being interspersed in the interband that blocks water press stranded form and every lead
The outside of line all scribbles binding agent.
Preferably, outer jacket employing polyethylene extrudes and forms.
In the present invention, conductor uses 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, it is provided with seal ring, after seal ring water-swellable, extrudes conductor screen
Cover layer and conductor, block moisture or moisture by the gap location longtitudinal dispersion of conductor；Extrude between layer and shielding layer of copper wires in insulation
Being provided with interior water-swellable sealing layer, interior water-swellable sealing layer is elastic layer, and brass wire shielding is laminated into interior water-swellable sealing layer
The outer surface inside making interior water-swellable sealing layer exceeds the outer surface of shielding layer of copper wires；Between shielding layer of copper wires and aluminium-plastic tape
Being provided with affair water expansion water-stop layer, 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 with interior water-swellable sealing layer by the 3rd tack coat and is fixed on by shielding layer of copper wires
Therebetween, make blind-mate between brass wire shielding and interior water-swellable sealing layer and affair water expansion water-stop layer, block water
The path that gas or moisture are longitudinally penetrated into by brass wire shielding；And outer jacket uses polyethylene to be made, when extruding outer jacket, by
Under the high temperature of outer jacket melt body and the effect of pressure in the polyethylene film of plastic-aluminum combined belt surface and outer protective polyethylene layer
Surface is bonded together, and the approach making moisture penetrate into cable is played excellent resistance effect by blocking completely.In sum, originally
Invent excellent block-water performance, effectively prevent aqueous vapor or moisture from the gap of the brass wire shielding that insulate or vertical from the gap of conductor
To infiltration, solve power cable with cross-linked polyethylene insulation and " water tree " problem easily occurs, so that crosslinked polyetylene insulated
Performance improves, it is to avoid cable insulation punch-through, extends the service 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.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
As it is shown in figure 1, the structural representation of a kind of waterproofing type power cable with cross-linked polyethylene insulation that Fig. 1 is the present invention to be proposed
Figure.
Reference Fig. 1, a kind of waterproofing type power cable with cross-linked polyethylene insulation that the embodiment of the present invention proposes, including: including:
Conductor 1, is coated on the conductor shield 2 outside conductor 1, is coated on the insulation outside conductor shield 2 and extrudes layer 3, is coated on
Insulation extrudes the shielding layer of copper wires 4 outside layer 3, is coated on the aluminium-plastic tape 5 outside shielding layer of copper wires 4, and is coated on aluminum
Outer jacket 6 outside plastic composite strip 5, outer jacket 6 uses polyethylene to extrude and forms, when extruding outer jacket 6, due to outer jacket 6
The high temperature of melt body and the lower polyethylene film on aluminium-plastic tape 5 surface of the effect of pressure glue with the inner surface of outer protective polyethylene layer 6
Together, the approach making moisture penetrate into cable is played excellent resistance effect by blocking completely to knot.
Conductor 1 is pressed stranded forming and outside each wire by waterstop and the staggered multiple conducting wires being interspersed in the interband that blocks water
Portion all scribbles binding agent；The anchor ring of conductor shield 2 is provided with groove, and groove is provided with several, along conductor shield 2 periphery
Genesis analysis, the outer surface of the outer surface and conductor shield 2 that are provided with seal ring 7 and seal ring 7 in each groove flushes, only
Water ring 7 makes moist after expanding and extrudes conductor shield 2 and conductor 1, blocks moisture or moisture by the gap location longtitudinal dispersion of conductor 1.
Extrude in insulation and between layer 3 and shielding layer of copper wires 4, be provided with interior water-swellable sealing layer 8, interior water-swellable sealing layer 8
And insulation extrudes and is provided with the first tack coat 9 between layer 3, interior water-swellable sealing layer 8 is elastic layer, in shielding layer of copper wires 4 is pressed into
The outer surface making interior water-swellable sealing layer 8 in water-swellable sealing layer 8 exceeds the outer surface of shielding layer of copper wires 4；Plastic-aluminum combined
Band 5 and shielding layer of copper wires 4 between be provided with affair water expansion water-stop layer 10, affair water expansion water-stop layer 10 with aluminium-plastic tape 5
Relative side is provided with the second tack coat 11.
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 is swollen
Swollen sealing layer 10 is bonded as one by the 3rd tack coat 12 and interior water-swellable sealing layer 8 shielding layer of copper wires 4 is fixed on two
Between person, when coordinating complete for shielding layer of copper wires 4 with interior water-swellable sealing layer 8 after affair water expansion water-stop layer 10 water-swellable
Parcel, blocks the path that aqueous vapor or moisture are longitudinally penetrated into by brass wire shielding；Affair water expansion water-stop layer 10 uses high-hydroscopicity tree
Fat material is made, and super absorbent resin has high-expansion, and the High hydrophilous resin gelinite volume after water suction expands immediately
Hundreds times, the gel after rapid occlusion penetrating passage, and water suction is under impressed pressure, and water is also not easy therefrom to extrude, keep away
Diffusion inside after absorb-free, the longitudinal direction effectively blocking water is penetrated into.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (2)
1. a waterproofing type power cable with cross-linked polyethylene insulation, including: conductor (1), it is coated on the conductor screen that conductor (1) is outside
Covering layer (2), the insulation being coated on conductor shield (2) outside extrudes layer (3), is coated on insulation and extrudes the copper wire that layer (3) is outside
Screen layer (4), is coated on the aluminium-plastic tape (5) that shielding layer of copper wires (4) is outside, and it is outside to be coated on aluminium-plastic tape (5)
Outer jacket (6)；Wherein, conductor (1) uses water-blocking conductor；It is characterized in that, the anchor ring of conductor shield (2) is provided with recessed
Groove, groove is provided with several, along conductor shield (2) periphery genesis analysis, is provided with seal ring (7) and stops in each groove
The outer surface of water ring (7) flushes with the outer surface of conductor shield (2)；Extrude between layer (3) and shielding layer of copper wires (4) in insulation
Being provided with interior water-swellable sealing layer (8), interior water-swellable sealing layer (8) and insulation extrude and are provided with the first tack coat between layer (3)
(9), interior water-swellable sealing layer (8) is elastic layer, makes interior chance in shielding layer of copper wires (4) press-in in water-swellable sealing layer (8)
The outer surface of water expansion water-stop layer (8) exceeds the outer surface of shielding layer of copper wires (4)；Shielding layer of copper wires (4) and aluminium-plastic tape (5)
Between be provided with affair water expansion water-stop layer (10), affair water expansion water-stop layer (10) is in the side relative with aluminium-plastic tape (5)
It is provided with the second tack coat (11)；Affair water expansion water-stop layer (10) is provided with the 3rd and glues in the side relative with shielding layer of copper wires (4)
Knot layer (12), affair water expansion water-stop layer (10) is bonded as one by the 3rd tack coat (12) and interior water-swellable sealing layer (8)
Shielding layer of copper wires (4) is fixed on therebetween by body；
Affair water expansion water-stop layer (10) uses super absorbent resin material to be made；Outer jacket (6) uses polyethylene to extrude
Form.
Waterproofing type power cable with cross-linked polyethylene insulation the most according to claim 1, it is characterised in that conductor (1) is by hindering
Water band and the staggered multiple conducting wires being interspersed in the interband that blocks water press stranded form and the outside of each wire all scribbles binding agent.
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 |
|---|---|
| CN104575840A CN104575840A (en) | 2015-04-29 |
| CN104575840B true CN104575840B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Families Citing this family (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 |
| JP2019075882A (en) | 2017-10-16 | 2019-05-16 | 矢崎総業株式会社 | Water stop structure of and water stop method for shielded electric wire |
Family Cites Families (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 |
| CN100568404C (en) * | 2007-05-17 | 2009-12-09 | 上海亚龙工业股份有限公司 | Waterproof power cable and manufacture 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 |
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| CN104575840A (en) | 2015-04-29 |
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Granted publication date: 20161207 Termination date: 20190107 |