CN202307292U - 220kV crosslinking polyethylene-insulated power cable - Google Patents
220kV crosslinking polyethylene-insulated power cable Download PDFInfo
- Publication number
- CN202307292U CN202307292U CN2011204264477U CN201120426447U CN202307292U CN 202307292 U CN202307292 U CN 202307292U CN 2011204264477 U CN2011204264477 U CN 2011204264477U CN 201120426447 U CN201120426447 U CN 201120426447U CN 202307292 U CN202307292 U CN 202307292U
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Abstract
The utility model discloses a 220kV crosslinking polyethylene-insulated power cable. The cable comprises an internal conductor. A semi-conductive conductor shielding layer, a crosslinking polyethylene insulated layer, a semi-conductive insulated shielding layer, a water-blocking tape buffer layer, a seamless ripple aluminium pipe, an anti-corrosion coating and an oversheath are successively arranged outside the internal conductor. The internal conductor comprise a central conductor and six fan-shaped copper conductors, wherein the six fan-shaped copper conductors are intertwisted to be a circular conductor, and the central conductor is positioned in the center of the circular conductor. The cable is environment-friendly, causes no pollution during use, can be produced continuously, is high in production efficiency, and the material of the cable is easy to be obtained. The cable conductor is the copper conductor that is greater than 1000mm<2>, and is composed of the six fan-shaped intertwisted and compacted copper conductors and a circular compacted conductor, such that the stability of the cable is enhanced, the skin effect is effectively minimized during transmission of electric energy, the utilization rate of transmission is increased, and the cable is more flexible and convenient to be bent. In addition, the cable of the utility model is long in service life and high in safety.
Description
Technical field
The utility model relates to a kind of electric wire, is a kind of 220kV power cable with cross-linked polyethylene insulation specifically.
Background technology
Along with the development of society, the city is increasing, and power load is increasingly high, and the safety requirements of power supply is more and more important.The urban electricity supply circuit is more and more closeer, become increasingly complex.Simultaneously because of the city appearance of the city needs, require attractive in appearancely as far as possible, do not adopt overhead transmission line as far as possible, employing is as much as possible put cable underground.Based on above reason, present large-scale, megapolis adopted the twisted polyethylene cable of 220kV in a large number, gets off to accomplish the conveying of big capacity electric energy through ground, to satisfy the demand of densely populated metropolis power consumption.
The structure composition of 220kV power cable mainly contains conductor, crosslinked polyetylene insulated and external protection; The 220kV power cable belongs to high voltage power cable, and the electric field strength in the cable insulation of energising back is bigger, and any structure design is improper, manufacturing defect or installation and operation are incorrect, all can cause cable breakdown, can't normally use; In the cables manufacturing process, insulation will guarantee not pollute, if having impurity or bubble in the insulation, then is easy to puncture after the cable energising; If there is moisture to get into the insulation of cable, then the longevity credit union of cable reduces cable greatly in running.
The utility model content
Goal of the invention: the purpose of the utility model is in order to overcome the deficiency of prior art, and a kind of rational in infrastructure, 220kV power cable with cross-linked polyethylene insulation that can improve useful life and safety in utilization is provided.
Technical scheme: in order to solve the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of 220kV power cable with cross-linked polyethylene insulation; Comprise inner wire, be provided with semiconductive conductor shield, crosslinked polyetylene insulated layer, semiconductive insulation screen, waterstop resilient coating, seamless corrugated aluminum pipe, corrosion-inhibiting coating and oversheath in the outside of inner wire successively; Wherein said inner wire comprises center conductor and 6 fan-shaped copper conductors, and 6 fan-shaped copper conductors are stranded to press rounded conductor, and said center conductor is positioned at the center of said round conductor.
Inner wire adopts 6 stranded being pressed on together of fan-shaped copper conductor in the utility model, and middle one is the structure of circular central conductor, forms milliken conductor; Such structure is more stable, and 6 fan-shaped strand of pieces block mutually with a middle circular strand piece, do not have the situation of dislocation distortion; Highly stable; Effectively reduce the kelvin effect in the electric energy transmitting process, can improve the utilance of electric energy transmitting, cable also more has flexibility to be convenient to bending simultaneously.
Beneficial effect: compared with prior art, the utility model is an environment-friendly type, does not pollute in the use, can produce continuously, and production efficiency is high, and material is easy to obtain; Cable conductor is greater than 1000mm
2Copper conductor, form by the 6 fan-shaped stranded copper conductors that press and the compact conductor of a circle, increase stability, effectively reduce the kelvin effect in the electric energy transmitting process, improved the utilance of transmission, cable also more has flexibility to be convenient to bending simultaneously; Adopt the seamless corrugated aluminum pipe structure of extruding; Aluminium is the metal material of function admirable, and moisture can not see through, and has placed multilayer waterstop resilient coating again in the aluminum pipe the inside simultaneously; Prevent that aluminum pipe from injuring cable core; Simultaneously waterstop is met water and can be expanded rapidly, and the entering of blocks moisture effectively prolongs cable useful life; Lay and not limited by height fall, easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of inner wire in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to specify.
As depicted in figs. 1 and 2; A kind of 220kV power cable with cross-linked polyethylene insulation; Comprise inner wire 1, be provided with semiconductive conductor shield 2, crosslinked polyetylene insulated layer 3, semiconductive insulation screen 4, waterstop resilient coating 5, seamless corrugated aluminum pipe 6, corrosion-inhibiting coating 7 and oversheath 8 in the outside of inner wire 1 successively; Wherein inner wire 1 comprises that the fan-shaped copper conductor of 12,6 of center conductor 11 and 6 fan-shaped copper conductors 12 is stranded and presses rounded conductor, and center conductor 11 is positioned at the center of round conductor.
The structure of cable inner conductor 1 is: 6 fan-shaped copper conductor 12 stranded formation round conductors that press, and center conductor 11 is circular stranded conductor and the center that is positioned at round conductor, inner wire 1 has promptly formed milliken conductor like this; Such structure is more stable, and 6 fan-shaped copper conductors 12 are 6 fan-shaped strand of pieces, and center conductor 11 is a circular strand piece; Such 6 fan-shaped strand of pieces block mutually with a middle circular strand piece; Do not have the situation of dislocation distortion, highly stable, effectively reduce the kelvin effect in the electric energy transmitting process; Improved the utilance of electric energy transmitting, cable also more has flexibility to be convenient to bending simultaneously; What crosslinked polyetylene insulated layer 3 adopted is ultra clean crosslinked polyetylene insulated processing, and its thickness is 24mm.Semiconductive conductor shield 2, semiconductive insulation screen 4 are that semiconductive material and crosslinked polyetylene insulated layer 3 closely combine glossily, so just guarantee that the cable field in the crosslinked polyetylene insulated layer 3 in cable energising back can be not lopsided, are evenly distributed.Waterstop resilient coating 5 is formed by the multilayer semi-conducting water-resistant tape, and meeting water can expand rapidly, and the entering of blocks moisture effectively prolongs cable useful life, can prevent effectively that seamless corrugated aluminum pipe 6 from hurting cable core simultaneously.Seamless corrugated aluminum pipe 6 is the thick extrusion pressing type aluminum pipes of 2.5mm, and aluminum pipe is squeezed into corrugated again, improves bending property, and aluminium is the metal material of function admirable, and moisture can not see through.Corrosion-inhibiting coating 7 is the anti-corrosion materials that are coated in aluminum pipe outside, prevents that aluminium from being corroded and bore a hole.Oversheath 8 extrudes and forms, and material is a polyethylene.The semiconductive graphite linings 9 that also has one deck to apply on oversheath 8 outer surfaces, its effect is the ground connection of cable jacket 8 withstand voltage tests, effectively the surface induction electricity is bled into the earth after cable puts into operation.
The utility model is the conveying that is used for large-and-medium size cities, super-huge industrial enterprise electric energy, and its more reasonable structure, manufacturing process are simple, reasonable price, long service life, security performance are high.
The above only is the preferred implementation of the utility model; Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle; Can also make some modification and improvement, these also should be regarded as belonging to the protection range of the utility model.
Claims (5)
1. 220kV power cable with cross-linked polyethylene insulation; It is characterized in that: comprise inner wire (1), be provided with semiconductive conductor shield (2), crosslinked polyetylene insulated layer (3), semiconductive insulation screen (4), waterstop resilient coating (5), seamless corrugated aluminum pipe (6), corrosion-inhibiting coating (7) and oversheath (8) in the outside of inner wire (1) successively; Wherein said inner wire (1) comprises center conductor (11) and 6 fan-shaped copper conductors (12), and 6 fan-shaped copper conductors (12) are stranded to press rounded conductor, and said center conductor (11) is positioned at the center of said round conductor.
2. 220kV power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: the thickness of said insulating barrier (3) is 24mm.
3. 220kV power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: the thickness of said seamless corrugated aluminum pipe (6) is 2.5mm.
4. 220kV power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: the material of said oversheath (8) is a polyethylene.
5. 220kV power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: be coated with semiconductive graphite linings (9) in the outside of said oversheath (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204264477U CN202307292U (en) | 2011-11-01 | 2011-11-01 | 220kV crosslinking polyethylene-insulated power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204264477U CN202307292U (en) | 2011-11-01 | 2011-11-01 | 220kV crosslinking polyethylene-insulated power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307292U true CN202307292U (en) | 2012-07-04 |
Family
ID=46376137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204264477U Expired - Fee Related CN202307292U (en) | 2011-11-01 | 2011-11-01 | 220kV crosslinking polyethylene-insulated power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202307292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915803A (en) * | 2012-09-07 | 2013-02-06 | 江苏东峰电缆有限公司 | Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths |
| CN110164611A (en) * | 2019-05-31 | 2019-08-23 | 金杯塔牌电缆有限公司 | A kind of refractory ceramics flexible fire-proof cable and production technology |
-
2011
- 2011-11-01 CN CN2011204264477U patent/CN202307292U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915803A (en) * | 2012-09-07 | 2013-02-06 | 江苏东峰电缆有限公司 | Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths |
| CN110164611A (en) * | 2019-05-31 | 2019-08-23 | 金杯塔牌电缆有限公司 | A kind of refractory ceramics flexible fire-proof cable and production technology |
| CN110164611B (en) * | 2019-05-31 | 2024-03-26 | 金杯电工(成都)有限公司 | High-temperature-resistant ceramic flexible fireproof cable and production process thereof |
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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: 20120704 Termination date: 20151101 |
|
| EXPY | Termination of patent right or utility model |