CN102623100A - Crosslinked polyethylene insulated corrugated steel sheath power cable - Google Patents
Crosslinked polyethylene insulated corrugated steel sheath power cable Download PDFInfo
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- CN102623100A CN102623100A CN2012101305690A CN201210130569A CN102623100A CN 102623100 A CN102623100 A CN 102623100A CN 2012101305690 A CN2012101305690 A CN 2012101305690A CN 201210130569 A CN201210130569 A CN 201210130569A CN 102623100 A CN102623100 A CN 102623100A
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- power cable
- steel sheath
- conductor
- crosslinked polyetylene
- polyetylene insulated
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Abstract
The invention provides a crosslinked polyethylene insulated corrugated steel sheath power cable, which comprises a conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer, a shielding layer, a corrugated steel sheath and an outer sheath from inside to outside, wherein the cross section of the conductor is a circle or a circle formed by combining a plurality of sector-shaped conductors; and the shielding layer consists of a semi-conductive water-blocking tape, a copper wire shield, an open lapping copper tape and a semi-conductive buffer water-blocking tape. The crosslinked polyethylene insulated power cable can effectively avoid skin effect, has water blocking and thermal buffer functions, allows large short-circuit current during a fault and has high corrosion resistance and light environmental pollution, and the mechanical strength can be improved; and moreover, the crosslinked polyethylene insulated corrugated steel sheath power cable is light in weight and convenient to transport and lay.
Description
Technical field
The present invention relates to a kind of cable, relate in particular to a kind of crosslinked polyetylene insulated wrinkle steel sheath power cable.
Background technology
The power cable with cross-linked polyethylene insulation of prior art, it is made up of conductor, conductor shield and the insulating barrier at center usually.
The cross section of power cable as shown in Figure 1, it comprises conductor 1, semiconductive belt 2, conductor shield 3 and insulating barrier 4 and insulation screen 5; There is following defective in the power cable with cross-linked polyethylene insulation that prior art provides:
The first, mechanical strength is low, and it is little to bear pressure, allows the failed shorted electric current little;
The second, if it adopt, and lead overlaps as metallic sheath, and processing technology is complicated, and is big for environment pollution, unfavorable
In environmental protection, very heavy, cost is high, is unfavorable for transporting and laying.
The 3rd, if it adopt aluminium sheath is as metallic sheath, outer pitching, and corrosion-resistant, big for environment pollution, be unfavorable for environmental protection.
Summary of the invention
The present invention provides a kind of crosslinked polyetylene insulated wrinkle steel sheath power cable, the technical problem that the power cable with cross-linked polyethylene insulation that can effectively avoid prior art to provide exists.
A kind of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention comprises:
Conductor from inside to outside, conductor shield, insulating barrier, insulation screen, screen, wrinkle steel sheath, oversheath;
The cross section of said conductor is circle circular or that combined by a plurality of sector conductors;
Said screen by the shielding of semiconductive waterstop, copper wire, dredge and constitute around copper strips, semi-conductive buffer water-blocking band.
Wherein, said insulating barrier is crosslinked polyetylene insulated layer.
Wherein, said semiconductive waterstop and said semi-conductive buffer water-blocking band are processed by elastomeric material.
Wherein, said wrinkle steel sheath employing non-magnetic stainless steel tape welding connects and processes.
Wherein, said oversheath adopts high-density polyethylene material to process.
Wherein, said oversheath also is coated with equadag coating outward.
Wherein, said sector conductor comprises multiple conducting wires.
Wherein, said lead is copper cash, aluminum steel.
The crosslinked polyetylene insulated wrinkle steel sheath power cable that embodiment of the present invention provides; Its conductor adopts circle or sector conductor to combine; Can effectively avoid kelvin effect, its conductor shield, insulating barrier, insulation shielding interface layer are smooth, and micropore impurity is very very little; Heat is extended consistent, can prolong the useful life of power cable; Its screen adopts semiconductive waterstop, copper wire shielding, dredges around copper strips, semi-conductive buffer water-blocking band structure; Semiconductive waterstop and semi-conductive buffer water-blocking band can be guaranteed insulation screen and wrinkle steel sheath equipotential, play simultaneously to block water and hot cushioning effect; Copper wire shielding allows the failed shorted electric current big, dredges and oppositely tightens and can effectively eliminate inductance around copper strips, satisfies under the important environmental condition specific (special) requirements to short circuit current; In addition, it adopts wrinkle steel sheath corrosion resistance strong, helps environmental protection, can also improve mechanical strength, and its lighter weight is beneficial to and transports and lay.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the cross sectional representation of the crosslinked polyetylene insulated wrinkle steel sheath power cable of prior art;
Fig. 2 is the cross sectional representation of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention.
Fig. 3 is the sketch map of the sector conductor of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention.
Embodiment
The present invention provides a kind of crosslinked polyetylene insulated wrinkle steel sheath power cable, the technical problem that the power cable with cross-linked polyethylene insulation that can effectively avoid prior art to provide exists.
Referring to Fig. 2, a kind of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention comprises:
A kind of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention comprises:
The cross section of said conductor 1 is circle circular or that combined by a plurality of sector conductors.As shown in Figure 3, the circle of the cross section of conductor 1 for combining by a plurality of sector conductors, this mode can effectively be avoided kelvin effect.
In addition, carry out on the U type that the is manufactured on cross-linking production line of said conductor shield 2, insulating barrier 3 and insulation screen 4, adopt three-layer co-extruded; Dry type sulfuration and process for cooling; Technological parameter calculates process simulation by NCC sulfuration and calculates, and Xi Kela derivometer thickness measurement online, calibrates, and eliminates at uniaxial stress; Conductor pre-heating and back heating purify technology such as material loading.Its micropore impurity is much better than standard-required, and the heat extension is consistent, has guaranteed that cable has sufficiently long useful life.
Concrete, conductor shield 2 is about the semiconductive nylon tape of 0.24mm by thickness and conductor screen material that thickness is about 1.5mm is formed.The thickness of said insulating barrier 3 is about 16.0mm; The thickness of said insulation screen 4 is about 1.0mm.
Said screen 5 by semiconductive waterstop 50, copper wire shielding 51, dredge and constitute around copper strips 52, semi-conductive buffer water-blocking band 53.
In concrete the realization, said semiconductive waterstop 50 and said semi-conductive buffer water-blocking band 52 are processed by elastomeric material.
Concrete, the thickness of said semiconductor waterstop 50 is about 0.9mm; The thickness of said copper wire shielding 51 is about 2.2mm; The said thickness of dredging around copper strips 52 is about 0.12mm; The thickness of said semi-conductive buffer water-blocking band 53 is about 2.75mm.
Said semiconductive waterstop 50 is low with buffering waterstop 51 resistivity, thickness is big; And has elasticity; Guarantee insulation screen 4 and wrinkle steel sheath 6 equipotentials; Play simultaneously block water, machinery and hot cushioning effect, copper wire shielding 51 can guarantee that around copper strips 52 short circuit current of cable satisfies instructions for use with dredging.
In concrete, said wrinkle steel sheath 6 adopts the non-magnetic stainless steel tape welding to connect and processes, and its thickness is about 0.8mm.
Concrete, wrinkle steel sheath 6 adopts stainless steel band welding fabrication technology; Because heat is less during welding; Pad below screen 5 surface temperatures are relatively low; Can not scald screen 4 surfaces, and weld and use the non-magnetic stainless steel band, its material and thickness are even; Stop the introduction of impurity and the generation of sand holes, guaranteed that fully 6 welding of wrinkle steel sheath are continuous, air tight.
In concrete, said oversheath 7 adopts high density polyethylene (HDPE) or pvc material to process, and its thickness is about 4.5mm.
Concrete, the high density polyethylene (HDPE) sheath that oversheath 7 adopts, smooth surface hardness is high, can resist stinging of termite and bite, and reduces in the work progress injury to oversheath 7.
In addition, the said oversheath 7 outer equadag coatings 8 that also are coated with.
In addition, said sector conductor comprises multiple conducting wires, and wherein, said lead is copper cash, aluminum steel.
Said is that sectional area is 4mm by copper cash or aluminum steel
2-12mm
2Copper cash, aluminum steel, these all are technical staff's technique known in present technique field.Here the scope of copper cash or aluminum steel just illustrates, and can not limit core concept of the present invention with this.
It is following to manufacture experimently the performance index that a kind of crosslinked polyetylene insulated wrinkle steel sheath power cable provided by the invention reached:
A. partial discharge: at 1.5U
0Under (96 kV), do not detect discharge above background (1.8 pC);
B. AC voltage withstand test: at 2.5 U
0Under (160 kV), duration 30 minutes, cable does not puncture;
C. tan δ: (95 ℃～100 ℃ of conductor temperatures are under 64 kV) 3.4 * 10
-4
D. the thermal cycling test of loading: at 2 U
0Under (128 kV), in 20 cycles, cable does not puncture;
E. lightning impulse test: 550 kV positive-negative polarities each 10 times, cable does not puncture;
F. the micropore impurity requirement of insulating: do not have micropore in the finished cable insulation, greater than 0.025mm greater than 0.05mm
Micropore in every 16.4cm3 insulation 0; There is not opaque impurity in the finished cable insulation, greater than 0.05mm and smaller or equal to the opaque impurity of 0.125mm in every 16.4cm3 insulation 0 greater than 0.125mm; There is not semitransparent brown (amber shape) material in the finished cable insulation greater than 0.25mm.
G. insulation eccentricity degree: 3%.
The crosslinked polyetylene insulated wrinkle steel sheath power cable that embodiment of the present invention provides; Its conductor adopts circle or sector conductor to combine; Can effectively avoid kelvin effect, its conductor shield, insulating barrier, insulation shielding interface layer are smooth, and micropore impurity is very very little; Heat is extended consistent, can prolong the useful life of power cable; Its screen adopts semiconductive waterstop, copper wire shielding, dredges around copper strips, semi-conductive buffer water-blocking band structure; Semiconductive waterstop and semi-conductive buffer water-blocking band can be guaranteed insulation screen and wrinkle steel sheath equipotential, play simultaneously to block water and hot cushioning effect; Copper wire shielding allows the failed shorted electric current big, dredges and oppositely tightens effective elimination inductance around copper strips, satisfies under the important environmental condition specific (special) requirements to short circuit current; In addition, it adopts wrinkle steel sheath corrosion resistance strong, helps environmental protection, can also improve mechanical strength,, its lighter weight is beneficial to and transports and lay.
It should be noted that; What the present invention described is a kind of product form of crosslinked polyetylene insulated wrinkle steel sheath power cable; Other satisfies constructed products according to the invention; Not influence the factor of product performance inequality even material, device name, outward appearance, device are put sequential scheduling, still belongs to the scope of the present invention's protection.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (8)
1. a crosslinked polyetylene insulated wrinkle steel sheath power cable is characterized in that, comprising:
Conductor from inside to outside, conductor shield, insulating barrier, insulation screen, screen, wrinkle steel sheath, oversheath;
The cross section of said conductor is circle circular or that combined by a plurality of sector conductors;
Said screen by the shielding of semiconductive waterstop, copper wire, dredge and constitute around copper strips, semi-conductive buffer water-blocking band.
2. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 1 is characterized in that, said insulating barrier is crosslinked polyetylene insulated layer.
3. according to claim 1 or claim 2 crosslinked polyetylene insulated wrinkle steel sheath power cable is characterized in that said semiconductive waterstop and said semi-conductive buffer water-blocking band are processed by elastomeric material.
4. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 3 is characterized in that, said wrinkle steel sheath adopts the non-magnetic stainless steel tape welding to connect and processes.
5. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 4 is characterized in that, said oversheath adopts high density polyethylene (HDPE) or pvc material to process.
6. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 5 is characterized in that said oversheath also is coated with equadag coating outward.
7. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 6 is characterized in that said sector conductor comprises multiple conducting wires.
8. crosslinked polyetylene insulated wrinkle steel sheath power cable as claimed in claim 7 is characterized in that said lead is copper cash, aluminum steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305690A CN102623100A (en) | 2012-04-28 | 2012-04-28 | Crosslinked polyethylene insulated corrugated steel sheath power cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305690A CN102623100A (en) | 2012-04-28 | 2012-04-28 | Crosslinked polyethylene insulated corrugated steel sheath power cable |
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| CN102623100A true CN102623100A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101305690A Pending CN102623100A (en) | 2012-04-28 | 2012-04-28 | Crosslinked polyethylene insulated corrugated steel sheath power cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000267A (en) * | 2012-12-20 | 2013-03-27 | 上海上缆藤仓电缆有限公司 | Crosslinked cable |
| CN103077777A (en) * | 2012-11-14 | 2013-05-01 | 湖北龙腾红旗电缆(集团)有限公司 | Rat-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission line |
| CN104157362A (en) * | 2014-08-26 | 2014-11-19 | 广州南洋电缆有限公司 | Power cable |
| CN105280299A (en) * | 2015-10-28 | 2016-01-27 | 无锡市长城电线电缆有限公司 | Novel reinforced extra-high-voltage power cable |
| CN110320391A (en) * | 2019-07-11 | 2019-10-11 | 国家电网有限公司 | Arrester DC break down voltage test automatic contractive shielding line and preparation method thereof |
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| US5133034A (en) * | 1991-08-20 | 1992-07-21 | At&T Bell Laboratories | Communications cable having a strength member system disposed between two layers of waterblocking material |
| CN201570303U (en) * | 2009-08-24 | 2010-09-01 | 上海索谷电缆集团有限公司 | Environment-friendly safe fire-proof marine power cable |
| CN201868146U (en) * | 2010-12-01 | 2011-06-15 | 青岛汉缆股份有限公司 | High-voltage water-blocking type insulated power cable |
| CN102280194A (en) * | 2011-05-18 | 2011-12-14 | 无锡市曙光电缆有限公司 | Cross-linked polyethylene isolated power cable of split conductor structure |
| CN202601305U (en) * | 2012-04-28 | 2012-12-12 | 广州南洋电缆有限公司 | Crosslinked polyethylene insulated corrugated steel sheath power cable |
-
2012
- 2012-04-28 CN CN2012101305690A patent/CN102623100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133034A (en) * | 1991-08-20 | 1992-07-21 | At&T Bell Laboratories | Communications cable having a strength member system disposed between two layers of waterblocking material |
| CN201570303U (en) * | 2009-08-24 | 2010-09-01 | 上海索谷电缆集团有限公司 | Environment-friendly safe fire-proof marine power cable |
| CN201868146U (en) * | 2010-12-01 | 2011-06-15 | 青岛汉缆股份有限公司 | High-voltage water-blocking type insulated power cable |
| CN102280194A (en) * | 2011-05-18 | 2011-12-14 | 无锡市曙光电缆有限公司 | Cross-linked polyethylene isolated power cable of split conductor structure |
| CN202601305U (en) * | 2012-04-28 | 2012-12-12 | 广州南洋电缆有限公司 | Crosslinked polyethylene insulated corrugated steel sheath power cable |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077777A (en) * | 2012-11-14 | 2013-05-01 | 湖北龙腾红旗电缆(集团)有限公司 | Rat-proof and termite-proof coaxial cable for grounding ultra-high voltage transmission line |
| CN103000267A (en) * | 2012-12-20 | 2013-03-27 | 上海上缆藤仓电缆有限公司 | Crosslinked cable |
| CN103000267B (en) * | 2012-12-20 | 2015-11-18 | 上海上缆藤仓电缆有限公司 | Crosslinked cable |
| CN104157362A (en) * | 2014-08-26 | 2014-11-19 | 广州南洋电缆有限公司 | Power cable |
| CN104157362B (en) * | 2014-08-26 | 2016-09-28 | 广州南洋电缆有限公司 | A kind of power cable |
| CN105280299A (en) * | 2015-10-28 | 2016-01-27 | 无锡市长城电线电缆有限公司 | Novel reinforced extra-high-voltage power cable |
| CN110320391A (en) * | 2019-07-11 | 2019-10-11 | 国家电网有限公司 | Arrester DC break down voltage test automatic contractive shielding line and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG NANYANG EXTRA HIGH VOLTAGE CABLE CO.,LTD Free format text: FORMER OWNER: GUANGZHOU NANYANG CABLE CO., LTD. Effective date: 20121227 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510000 GUANGZHOU, GUANGDONG PROVINCE TO: 511356 GUANGZHOU, GUANGDONG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20121227 Address after: 511356 No. 19, Yongfeng Road, Yonghe Economic Zone, Guangzhou economic and Technological Development Zone, Guangdong Applicant after: Guangdong Nanyang EHV Cable Co., Ltd. Address before: 510000 Guangdong city of Guangzhou Province Economic and Technological Development Zone Lianyun Road No. 376 Applicant before: Guangzhou Nanyang Cable Group Holding Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |