CN204215801U - Power cable with cross-linked polyethylene insulation - Google Patents
Power cable with cross-linked polyethylene insulation Download PDFInfo
- Publication number
- CN204215801U CN204215801U CN201420741269.0U CN201420741269U CN204215801U CN 204215801 U CN204215801 U CN 204215801U CN 201420741269 U CN201420741269 U CN 201420741269U CN 204215801 U CN204215801 U CN 204215801U
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- Prior art keywords
- water
- cross
- linked polyethylene
- power cable
- blocking
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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
- 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
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Abstract
The utility model provides a kind of power cable with cross-linked polyethylene insulation, and described power cable with cross-linked polyethylene insulation comprises water-blocking conductor, conductor shield, crosslinked polyetylene insulated layer, insulation screen from inside to outside successively.Described power cable with cross-linked polyethylene insulation outermost layer also comprises oversheath.Be added with waterproofing rope, water-proofing powder, water blocking yarn in described water-blocking conductor or be surrounded with waterstop.Water blocking yarn, waterproofing rope and wrapped semiconductor waterstop or insulation waterstop is filled during the cable core stranding of described water-blocking conductor.Power cable with cross-linked polyethylene insulation of the present utility model adopts waterproofing type conductor and cable core to carry out longitudinal water-blocking.The initiatively material water-proof material such as waterstop, water-proofing powder, waterproofing rope and water blocking yarn is adopted in water-blocking conductor.If there is cable joint damage or sheath breakage under external force, moisture or moisture longitudinally will infiltrate along the conductor wire core of cable and cable core and be absorbed by material water-proof material, block penetrating passage, thus ensure cable insulation safety.
Description
[technical field]
The utility model relates to field of cables, is specifically related to a kind of power cable with cross-linked polyethylene insulation.
[background technology]
Power cable with cross-linked polyethylene insulation, owing to having excellent electric property and mechanical and physical performance, 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 extensively subject to user and welcome.
But, twisted polyethylene cable is laying and run duration, when mechanical stress or external force cause cable cover(ing) and insulation harm or joint failure, moisture or moisture can immerse along cable longitudinal direction and radial clearance, and the probability causing cross-inked polyethylene power cable insulation to generate water tree under working voltage rises rapidly.Namely water tree grows into certain length can cause permanent electric branch defect at water tree tip, and causes cable insulation to puncture in the short period, causes power outage.
In order to solve the problem, mainly adopt at present and carrying out modification to crosslinked polyethylene, interpolation voltage stabilizer and other additive suppress the generation of water tree, or use pe sheath to block water.Find in practice, current code existing problems, fundamentally can not stop in insulation and produce water tree.
[utility model content]
In view of this, for overcoming the deficiencies in the prior art, the utility model provides the power cable with cross-linked polyethylene insulation that a kind of block-water performance is strong.
A kind of power cable with cross-linked polyethylene insulation, described power cable with cross-linked polyethylene insulation comprises water-blocking conductor, conductor shield, crosslinked polyetylene insulated layer, insulation screen from inside to outside successively.Described power cable with cross-linked polyethylene insulation outermost layer also comprises oversheath.Be added with waterproofing rope, water-proofing powder, water blocking yarn in described water-blocking conductor or be surrounded with waterstop.Water blocking yarn, waterproofing rope and wrapped semiconductor waterstop or insulation waterstop is filled during the cable core stranding of described water-blocking conductor.
On the basis of technique scheme, described power cable with cross-linked polyethylene insulation comprises described water-blocking conductor, described conductor shield, described crosslinked polyetylene insulated layer, described insulation screen, interior semiconductor waterstop, metal screen layer, outer semiconductor waterstop, vertical alclad plastic composite strip and described oversheath from inside to outside successively.
On the basis of technique scheme, described power cable with cross-linked polyethylene insulation comprises described water-blocking conductor from inside to outside successively, described conductor shield, described crosslinked polyetylene insulated layer, described insulation screen, semiconductive block water expansion buffer layer, sealing metal sheath and described oversheath.
On the basis of technique scheme, described sealing metal sheath is hot extrude jewelling or plumbous cover, cold-drawn metallic sheath, indulge bag argon arc welding and the wrinkle aluminium of embossing or stainless steel sleeve one of them.
Power cable with cross-linked polyethylene insulation of the present utility model adopts waterproofing type conductor and cable core to carry out longitudinal water-blocking.The initiatively material water-proof material such as waterstop, water-proofing powder, waterproofing rope and water blocking yarn is adopted in water-blocking conductor.If there is cable joint damage or sheath breakage under external force, moisture or moisture longitudinally will infiltrate along the conductor wire core of cable and cable core.These moisture and moisture can be absorbed by the waterstop containing imbibition powder, water blocking yarn or waterproofing rope, after the water suction of these material water-proof materials, undergoes rapid expansion forms spawn, block penetrating passage, stop further diffusion and the extension of moisture and moisture, the loss of cable is dropped to minimum.
[accompanying drawing explanation]
Fig. 1 is the schematic cross-section of the power cable with cross-linked polyethylene insulation of the first preferred embodiment of the present utility model.
Fig. 2 is the schematic cross-section of the power cable with cross-linked polyethylene insulation of the second preferred embodiment of the present utility model.
[embodiment]
In order to understand the utility model better, below with reference to accompanying drawing and instantiation, the utility model is described in detail.
For the waterproof safety hidden danger that existing power cable with cross-linked polyethylene insulation exists, the utility model provides a kind of power cable with cross-linked polyethylene insulation, effectively can block water to power cable with cross-linked polyethylene insulation.
In order to reach the object effectively blocked water, power cable with cross-linked polyethylene insulation of the present utility model is from the completely isolated water inlet hidden danger of radial water-resisting and longitudinal water-blocking two aspects.Here, radial water-resisting stops moisture or aqueous vapor radial or laterally infiltrate cable through sheath along cable, and longitudinal water-blocking stops moisture or aqueous vapor longitudinally or axially to infiltrate cable along cable conductor and cable core gap.
Refer to Fig. 1, it is the schematic cross-section of the power cable with cross-linked polyethylene insulation of the first preferred embodiment of the present utility model.Cable shown in Fig. 1 is midium voltage cable, and it comprises water-blocking conductor 1, conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4, interior semiconductor waterstop 5, metal screen layer 6, outer semiconductor waterstop 7, vertical alclad plastic composite strip 8 and oversheath 9 from inside to outside successively.
Wherein, described power cable with cross-linked polyethylene insulation adopts water-blocking conductor 1 to carry out longitudinal water-blocking.Water-blocking conductor 1 adopts waterproofing type conductor and cable core thereof to carry out longitudinal water-blocking.Stranded press water-blocking conductor 1 time add waterproofing rope, water-proofing powder, water blocking yarn, or wrapped waterstop.In cable core cabling process, fill water blocking yarn, waterproofing rope and wrapped semiconductor waterstop or insulation waterstop.
Described power cable with cross-linked polyethylene insulation adopts vertical alclad plastic composite strip 8 to carry out radial water-resisting.Midium voltage cable radial water-resisting adopts plastic-aluminum combined integrated sheath (vertical alclad plastic composite strip 8), overlaps 9 actings in conjunction reach the object that blocks water by the aluminium-plastic tape 8 of vertical bag with the outer protective polyethylene extruded.When extruding pe sheath 9, due to the effect of polyethylene melt body height moderate pressure, the inner surface that the polyethylene film on aluminium-plastic tape 8 surface and outer protective polyethylene overlap 9 is bondd well, putting up simultaneously between the vertical bag of aluminium-plastic tape 8 also obtains good bonding, thus plug the approach of moisture or aqueous vapor infiltration cable completely, reach good block-water effect.
Refer to Fig. 2, it is the schematic cross-section of the power cable with cross-linked polyethylene insulation of the second preferred embodiment of the present utility model.Cable shown in Fig. 2 is high-tension cable, and it comprises water-blocking conductor 1 from inside to outside successively, conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4, semiconductive block water expansion buffer layer 10, bamboo joint type embossing metallic aluminium sheath 11 and oversheath 9.
Wherein, described power cable with cross-linked polyethylene insulation adopts water-blocking conductor 1 to carry out longitudinal water-blocking.Water-blocking conductor 1 adopts waterproofing type conductor and cable core thereof to carry out longitudinal water-blocking.Stranded press water-blocking conductor 1 time add waterproofing rope, water-proofing powder, water blocking yarn, or wrapped waterstop.In cable core cabling process, fill water blocking yarn, waterproofing rope and wrapped semiconductor waterstop or insulation waterstop.
Described power cable with cross-linked polyethylene insulation adopts sealing metal cover (bamboo joint type embossing metallic aluminium sheath 11) to carry out radial water-resisting.High-tension cable adopts the metallic sheath of the aluminium of hot extrusion or plumbous cover, cold-drawn, and vertical bag argon arc welding the wrinkle aluminium of embossing or stainless steel sleeve etc. have completely airtight sealing metal cover, makes cable reach radial water-resisting thoroughly.Outside metallic sheath 11, also to extrude polyethylene or polyvinyl chloride oversheath 9.
In the power cable with cross-linked polyethylene insulation that above-mentioned two embodiments provide, oversheath 9 is polyethylene or polyvinyl chloride oversheath.
In power cable with cross-linked polyethylene insulation provided by the utility model, waterproofing type conductor and cable core is adopted to carry out longitudinal water-blocking.The initiatively material water-proof material such as waterstop, water-proofing powder, waterproofing rope and water blocking yarn is adopted in water-blocking conductor.If there is cable joint damage or sheath breakage under external force, moisture or moisture longitudinally will infiltrate along the conductor wire core of cable and cable core.These moisture and moisture can be absorbed by the waterstop containing imbibition powder, water blocking yarn or waterproofing rope, after the water suction of these material water-proof materials, undergoes rapid expansion forms spawn, block penetrating passage, stop further diffusion and the extension of moisture and moisture, the loss of cable is dropped to minimum.Relative to passive material water-proof material petroleum jelly, initiatively material water-proof material has strong absorptive and high expansion rate, and it can strong water absorption function undergoes rapid expansion, forms spawn and blocks penetrating passage, thus ensure cable insulation safety.
Power cable with cross-linked polyethylene insulation provided by the utility model adopts initiatively material water-proof material to carry out longitudinal water-blocking and radial water-resisting, effectively can block water to power cable with cross-linked polyethylene insulation, fundamentally prevent moisture and moisture from entering power cable with cross-linked polyethylene insulation.
The above exemplifying embodiment only have expressed some embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (4)
1. a power cable with cross-linked polyethylene insulation, it is characterized in that: described power cable with cross-linked polyethylene insulation comprises water-blocking conductor, conductor shield, crosslinked polyetylene insulated layer, insulation screen from inside to outside successively, described power cable with cross-linked polyethylene insulation outermost layer also comprises oversheath, be added with waterproofing rope, water-proofing powder, water blocking yarn in described water-blocking conductor or be surrounded with waterstop, during the cable core stranding of described water-blocking conductor, filling water blocking yarn, waterproofing rope and wrapped semiconductor waterstop or insulation waterstop.
2. power cable with cross-linked polyethylene insulation according to claim 1, is characterized in that: described power cable with cross-linked polyethylene insulation comprises described water-blocking conductor, described conductor shield, described crosslinked polyetylene insulated layer, described insulation screen, interior semiconductor waterstop, metal screen layer, outer semiconductor waterstop, vertical alclad plastic composite strip and described oversheath from inside to outside successively.
3. power cable with cross-linked polyethylene insulation according to claim 1, is characterized in that: described power cable with cross-linked polyethylene insulation comprises described water-blocking conductor from inside to outside successively, described conductor shield, described crosslinked polyetylene insulated layer, described insulation screen, semiconductive block water expansion buffer layer, sealing metal sheath and described oversheath.
4. power cable with cross-linked polyethylene insulation according to claim 3, is characterized in that: described sealing metal sheath is hot extrude jewelling or plumbous cover, cold-drawn metallic sheath, indulge bag argon arc welding and the wrinkle aluminium of embossing or stainless steel sleeve one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741269.0U CN204215801U (en) | 2014-12-01 | 2014-12-01 | Power cable with cross-linked polyethylene insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741269.0U CN204215801U (en) | 2014-12-01 | 2014-12-01 | Power cable with cross-linked polyethylene insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215801U true CN204215801U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741269.0U Expired - Fee Related CN204215801U (en) | 2014-12-01 | 2014-12-01 | Power cable with cross-linked polyethylene insulation |
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| CN (1) | CN204215801U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821200A (en) * | 2015-05-27 | 2015-08-05 | 北京亨通斯博通讯科技有限公司 | Full dry type high-water-blockage communication cable |
| CN105405518A (en) * | 2015-12-07 | 2016-03-16 | 无锡裕德电缆科技有限公司 | <=1500V DC traction water-proof power cable for rail transit |
| CN105405519A (en) * | 2015-12-18 | 2016-03-16 | 天津东方威尔科技有限公司 | Waterproof cable |
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN107068284A (en) * | 2016-10-17 | 2017-08-18 | 特变电工山东鲁能泰山电缆有限公司 | High-efficiency transfer power-frequency electromagnetic fields |
| CN108550421A (en) * | 2018-06-25 | 2018-09-18 | 江苏东峰电缆有限公司 | A kind of crosslinked polyetylene insulated pvc sheath radial water-resisting power cable |
-
2014
- 2014-12-01 CN CN201420741269.0U patent/CN204215801U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821200A (en) * | 2015-05-27 | 2015-08-05 | 北京亨通斯博通讯科技有限公司 | Full dry type high-water-blockage communication cable |
| CN105405518A (en) * | 2015-12-07 | 2016-03-16 | 无锡裕德电缆科技有限公司 | <=1500V DC traction water-proof power cable for rail transit |
| CN105405519A (en) * | 2015-12-18 | 2016-03-16 | 天津东方威尔科技有限公司 | Waterproof cable |
| CN107068284A (en) * | 2016-10-17 | 2017-08-18 | 特变电工山东鲁能泰山电缆有限公司 | High-efficiency transfer power-frequency electromagnetic fields |
| CN106683756A (en) * | 2016-11-11 | 2017-05-17 | 湖北龙腾红旗电缆(集团)有限公司 | Comprehensive protection-type medium-voltage subway cable |
| CN106683756B (en) * | 2016-11-11 | 2018-12-21 | 湖北龙腾红旗电缆(集团)有限公司 | Metro Cable is pressed in integrated protection type |
| CN108550421A (en) * | 2018-06-25 | 2018-09-18 | 江苏东峰电缆有限公司 | A kind of crosslinked polyetylene insulated pvc sheath radial water-resisting power cable |
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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 |
Granted publication date: 20150318 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |