CN203103005U - Direct-current submarine cable structure for flexible power transmission - Google Patents
Direct-current submarine cable structure for flexible power transmission Download PDFInfo
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- CN203103005U CN203103005U CN 201320064632 CN201320064632U CN203103005U CN 203103005 U CN203103005 U CN 203103005U CN 201320064632 CN201320064632 CN 201320064632 CN 201320064632 U CN201320064632 U CN 201320064632U CN 203103005 U CN203103005 U CN 203103005U
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Abstract
The utility model discloses a direct-current submarine cable structure for flexible power transmission. The direct-current submarine cable structure comprises a water-blocking conductor layer, a conductor shielding layer, an insulating layer, an insulating shielding layer, a buffer layer, a lead sheath, an outer sheath, an inner liner layer, an armor layer and a jacket layer which are sequentially arranged from inside to outside. The direct-current submarine cable structure has the characteristics that the insulating layer is made of direct-current crosslinked polyethylene; the water-blocking conductor layer, of which the cross section is round, is formed by stranding a plurality of single-wire conductors; and the shapes of the cross sections of the single-wire conductors are sector annular. The direct-current submarine cable structure has the advantages that the shapes of the cross sections of the single-wire conductors are sector annular, and the plurality of sector annular single-wire conductors are stranded to be the water-blocking conductor layer with the round cross section, so that the filling coefficient of the water-blocking conductor layer is greatly improved and is up to more than 96 percent; the conductor water resistance performance is high, the outside diameter of the conductor is 3-6 percent smaller than the outside diameter of a conductor layer with the same cross section in the traditional direct current cable; and the surface of the water-blocking conductor layer is smooth, so that the service life of the cable is prolonged.
Description
Technical field
The utility model relates to a kind of extra large cable, relates in particular to a kind of flexible transmission direct current submarine cable structure.
Background technology
At present, ac cable is widely used in land cable and the extra large cable, but the following problem of ac cable ubiquity: and the line loss when (1), transmission of electricity is big; (2), ac cable is owing to be subjected to the restriction of transmission range, makes it can't realize remote large capacity transmission; (4), the required construction investment of ac transmission is than higher.In order to address the above problem, direct current cables arises at the historic moment.But, in the present direct current cables, its conductor layer that is positioned at the bosom is made up of many single line conductors, and because the shape of cross section of single line conductor is circular, make the activity coefficient of conductor layer lower, block-water performance is poor, external diameter is big, the surface is smooth inadequately, has influenced the useful life of direct current cables.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of activity coefficient that can improve conductor in the cable greatly, and block-water performance is good and external diameter is little, the flexible transmission of good electrical property direct current submarine cable structure.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: flexible transmission direct current submarine cable structure, comprise the water-blocking conductor layer, conductor shield, insulating barrier, insulation screen, resilient coating, plumbous cover, oversheath, inner covering, armour and the serving that set gradually from inside to outside, the material of described insulating barrier is the direct current crosslinked polyethylene, the cross section of described water-blocking conductor layer is for circle and by many stranded the forming of single line conductor, and annular is fanned in being shaped as of the cross section of described single line conductor.
Described single line conductor dbus is crossed extrusion process and is made.
Compared with prior art, the utility model has the advantages that because annular is fanned in being shaped as of the cross section of single line conductor, with the single line conductors of many fan annulars be twisted into cross section for circular water-blocking conductor layer after, improved the activity coefficient of water-blocking conductor layer greatly, it can reach more than 96%, and the conductor block-water performance is excellent, and conductor diameter is than the reduced diameter 3%～6% with conductor layer in traditional direct current cables in cross section, and the surface of water-blocking conductor layer is very smooth, has improved the useful life of cable; In addition, because the single line conductor dbus is crossed extrusion process and made, its forming process no longer needs cold pressurization, makes the water-blocking conductor layer have good conductivity.
Description of drawings
Fig. 1 is a cross-sectional structure schematic diagram of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, flexible transmission direct current submarine cable structure, comprise the water-blocking conductor layer, conductor shield 2, insulating barrier 3, insulation screen 4, resilient coating 5, plumbous cover 6, oversheath 7, inner covering 8, armour 9 and the serving 10 that set gradually from inside to outside, the material of insulating barrier 3 is the direct current crosslinked polyethylene, the cross section of water-blocking conductor layer is for circle and by many single line conductors 11 stranded forming, the cross section of single line conductor 11 be shaped as fan annular, single line conductor 11 is made by extrusion process.
Claims (2)
1. flexible transmission is with direct current submarine cable structure, comprise the water-blocking conductor layer, conductor shield, insulating barrier, insulation screen, resilient coating, plumbous cover, oversheath, inner covering, armour and the serving that set gradually from inside to outside, the material that it is characterized in that described insulating barrier is the direct current crosslinked polyethylene, the cross section of described water-blocking conductor layer is for circle and by many stranded the forming of single line conductor, and annular is fanned in being shaped as of the cross section of described single line conductor.
2. flexible transmission as claimed in claim 1 is with direct current submarine cable structure, it is characterized in that described single line conductor dbus crosses extrusion process and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064632 CN203103005U (en) | 2013-02-04 | 2013-02-04 | Direct-current submarine cable structure for flexible power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064632 CN203103005U (en) | 2013-02-04 | 2013-02-04 | Direct-current submarine cable structure for flexible power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103005U true CN203103005U (en) | 2013-07-31 |
Family
ID=48854392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320064632 Expired - Lifetime CN203103005U (en) | 2013-02-04 | 2013-02-04 | Direct-current submarine cable structure for flexible power transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203103005U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158129A (en) * | 2016-08-29 | 2016-11-23 | 中天科技海缆有限公司 | ± 500kV ladder-shaped conductor corrugated aluminium sheath Optical Fiber Composite direct current cables |
| CN114822982A (en) * | 2022-06-02 | 2022-07-29 | 中天科技海缆股份有限公司 | Direct current submarine cable |
| WO2022257513A1 (en) * | 2021-06-07 | 2022-12-15 | 中天科技海缆股份有限公司 | Flexible direct-current submarine cable |
-
2013
- 2013-02-04 CN CN 201320064632 patent/CN203103005U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158129A (en) * | 2016-08-29 | 2016-11-23 | 中天科技海缆有限公司 | ± 500kV ladder-shaped conductor corrugated aluminium sheath Optical Fiber Composite direct current cables |
| WO2022257513A1 (en) * | 2021-06-07 | 2022-12-15 | 中天科技海缆股份有限公司 | Flexible direct-current submarine cable |
| CN114822982A (en) * | 2022-06-02 | 2022-07-29 | 中天科技海缆股份有限公司 | Direct current submarine cable |
| CN114822982B (en) * | 2022-06-02 | 2023-11-07 | 中天科技海缆股份有限公司 | DC submarine cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |