CN201725623U - Submarine electric power cable - Google Patents
Submarine electric power cable Download PDFInfo
- Publication number
- CN201725623U CN201725623U CN201020143070XU CN201020143070U CN201725623U CN 201725623 U CN201725623 U CN 201725623U CN 201020143070X U CN201020143070X U CN 201020143070XU CN 201020143070 U CN201020143070 U CN 201020143070U CN 201725623 U CN201725623 U CN 201725623U
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- CN
- China
- Prior art keywords
- layer
- conductor
- steel wire
- power cable
- restrictive coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000010410 layer Substances 0.000 claims abstract description 40
- 239000004020 conductor Substances 0.000 claims abstract description 38
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 12
- 239000008397 galvanized steel Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Images
Classifications
-
- 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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- Insulated Conductors (AREA)
Abstract
一种海底电力电缆，包括由内至外设置的导体(1)、半导电层(2)、绝缘层(3)、缓冲层(4)、铅套(5)、内护套层(6)、铠装层(7)及铠装外保护层(8)，其特征在于：所述内护套层(6)由半导电层与绝缘层两种形式首尾串联而成的混合层。与现有技术相比，本实用新型采用铠装内护套层由半导电层与绝缘层两种形式首尾串联而成的混合层。这种设计的优点在于海底电力电缆在水下部分和陆上部分由不同的内护套层结构，水下部分为防腐的半导电层，这样可以有效的解决感应电势的问题，进而解决了环流问题；而陆上部分为一层绝缘层，与常用的电力电缆的结构相同，这样可以实现交叉互联，进而达到降低损耗，提高载流量的目的。
A submarine power cable, comprising a conductor (1), a semiconductive layer (2), an insulating layer (3), a buffer layer (4), a lead sheath (5), and an inner sheath layer (6) arranged from inside to outside . The armor layer (7) and the armor outer protective layer (8), characterized in that: the inner sheath layer (6) is a mixed layer composed of a semiconductive layer and an insulating layer connected end to end. Compared with the prior art, the utility model adopts a mixed layer in which the armored inner sheath layer is composed of a semiconductive layer and an insulating layer connected in series from end to end. The advantage of this design is that the underwater part and the land part of the submarine power cable have different inner sheath structures, and the underwater part is an anti-corrosion semi-conductive layer, which can effectively solve the problem of induced potential, and then solve the problem of circulation Problem; while the land part is an insulating layer, which has the same structure as the commonly used power cables, so that cross-connection can be realized, thereby reducing losses and increasing the carrying capacity.
Description
Technical field
The utility model relates to a kind of submarine cable technical field that is used for, and especially refers to a kind of power cable that is used for the seabed.
Background technology
At present, submarine cable generally can produce induced potential on metallic sheath, so needing to adopt the method for ground connection eliminates, make it safe operation, but can produce circulation loss again, the ampacity of cable reduces greatly, can not make full use of the current capacity of cable conductor, has caused the wasting of resources to a certain extent.The structure of existing submarine cable is generally all added the layer of polyethylene sheath in the metallic sheath outside, makes it the anticorrosive coat as submarine cable, and has insulation property.In order to eliminate the electrical potential difference between submarine cable metallic sheath and the armour, common practices is, every about 500 meters with the pe sheath strip off, one end of one or more braiding copper cash is welded on the metallic sheath, the other end contacts with wire armoring by the opening of pe sheath, thereby eliminates the electrical potential difference between metallic sheath and the armour.But the cable that adopts this method to lay, its metallic sheath discharge is inhomogeneous, and the opening part on the pe sheath is also thrown off easily, makes the cable water inlet easily, and antiseptic effect can't satisfy.
Existing a kind of patent No. is 200720108676.8 and is called that the Chinese utility model patent of " a kind of seabed cross-linked power cable " discloses a kind of structure, its structure comprises core, armouring inner covering, armour and the armouring outer jacket that is provided with from inside to outside, characteristics are that armour is made up of around the nonmagnetic metal silk of arranging many uniform ring, and the nonmagnetic metal silk is outside equipped with the plastics anticorrosive coat; Advantage is to substitute the zinc-coated wire sheathed structure with nonmagnetic metal silk sheathed structure both to have exempted serious eddy current, the magnetic hysteresis loss of taking the zinc-coated wire sheathed structure and producing, it is nearly 30% to make it allow ampacity to exceed than the permission ampacity of zinc-coated wire armoured cable, has guaranteed the tensile strength of seabed cross-linked power cable again; Be outside equipped with the plastics anticorrosive coat at the nonmagnetic metal silk, make nonmagnetic metal silk armoured cable place seawater for a long time and can not be corroded.But its shortcoming is it has done improvement to armour, and has above-mentioned shortcoming equally, also the tensile strength of conductor is not made improvements, and this cable amount of copper consuming is big, cost is higher so it is made, so its structure awaits to improve.
Summary of the invention
Technical problem to be solved in the utility model is to provide the sea electric power cable that a kind of loss is few and current-carrying is high at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this sea electric power cable; comprise the conductor, semi-conductive layer, insulating barrier, resilient coating, plumbous cover, inner restrictive coating, armour and the armouring external protection that are provided with from the inside to the outside, it is characterized in that: the mixed layer that described inner restrictive coating is in series from beginning to end by semi-conductive layer and two kinds of forms of insulating barrier.
As improvement, described insulation inner restrictive coating may be selected to be polyethylene layer, and described semiconductive inner restrictive coating can be preferably the semiconductive polyethylene layer.
Improve, described conductor can be selected the mixing core be made up of steel wire lead and aluminum conductor again, and described steel wire lead is positioned at the center of conductor, and steel wire lead and aluminum conductor are the formed conductor of steel reinforced aluminium conductor structure.
Improve, described steel reinforced aluminium conductor structure is meant: some strands of steel wire leads are positioned at the center again, and some strands of aluminum conductors are outside the steel wire lead and be twisted into the steel reinforced aluminium conductor conductor mutually.
Improve again; described armour is made up of many galvanized steel wire ropes; described galvanized steel wire rope is positioned at the structure that same periphery distributes and the protective layer that forms with cross section; certainly; described armour also can be made up of many galvanized steel wire ropes and some Al-alloy metal silks, and described galvanized steel wire rope and some Al-alloy metal silks are to be spaced and to be positioned at the structure that same periphery distributes and the protective layer that forms with cross section.
Improve, described armouring external protection can be the pitch outer wrapping layer of polypropylene rope as inner reinforcement again.
Compared with prior art, the utility model adopts the mixed layer that the armouring inner restrictive coating is in series from beginning to end by semi-conductive layer and two kinds of forms of insulating barrier.The advantage of this design be sea electric power cable under water the part with land part by different inner restrictive coating structures, underwater portion is the corrosion-resistant semi-conductive layer, can effectively solve the problem of induced potential like this, and then solve circulation problem; And land part is a layer insulating, and is identical with the structure of common electric power cable, can realize cross interconnectedly like this, and then reaches and reduces the wastage, and improves the purpose of ampacity.
Description of drawings
Fig. 1 is the structure cutaway view of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1; the sea electric power cable of present embodiment; comprise the conductor 1, semi-conductive layer 2, insulating barrier 3, resilient coating 4, plumbous cover 5, inner restrictive coating 6, armour 7 and the armouring external protection 8 that are provided with from the inside to the outside, the mixed layer that described inner restrictive coating 6 is in series from beginning to end by semi-conductive layer and two kinds of forms of insulating barrier.Above-mentioned insulation inner restrictive coating is chosen as polyethylene layer, and the semiconductive inner restrictive coating is chosen as the semiconductive polyethylene layer.The mixing core that conductor 1 is made up of steel wire lead and aluminum conductor, this steel wire lead is positioned at the center of conductor 1, and steel wire lead and aluminum conductor are the formed conductor 1 of steel reinforced aluminium conductor structure.So-called steel reinforced aluminium conductor structure is meant: some strands of steel wire leads are positioned at the center, and some strands of aluminum conductors are outside the steel wire lead and be twisted into the steel reinforced aluminium conductor conductor mutually.Armour 7 is made up of many galvanized steel wire ropes 71, and described galvanized steel wire rope 71 is positioned at the structure that same periphery distributes and the protective layer that forms with cross section.Certainly; armour 7 also can be made up of many galvanized steel wire ropes 71 and some Al-alloy metal silks; described galvanized steel wire rope 71 and some Al-alloy metal silks are to be spaced and to be positioned at the structure that same periphery distributes and the protective layer that forms specifically can be decided by designing requirement with cross section.Armouring external protection 8 is the pitch outer wrapping layer of polypropylene rope as inner reinforcement.
Below the utility model is further specified.
As shown in Figure 1; a kind of sea electric power cable; be divided under water and land two parts; underwater portion comprises conductor 1, semi-conductive layer 2, insulating barrier 3, resilient coating 4, plumbous cover 5, semi-conductive layer inner restrictive coating 6, armour 7, the armouring external protection 8 that is provided with from inside to outside, and land part comprises conductor 1, semi-conductive layer 2, insulating barrier 3, resilient coating 4, plumbous cover 5, insulating barrier inner restrictive coating 6, armour 7, the armouring external protection 8 that is provided with from inside to outside.
Claims (8)
1. sea electric power cable; comprise the conductor (1), semi-conductive layer (2), insulating barrier (3), resilient coating (4), plumbous cover (5), inner restrictive coating (6), armour (7) and the armouring external protection (8) that are provided with from the inside to the outside, it is characterized in that: the mixed layer that described inner restrictive coating (6) is in series from beginning to end by two kinds of forms of semiconductive inner restrictive coating and insulation inner restrictive coating.
2. power cable according to claim 1 is characterized in that: described insulation inner restrictive coating is a polyethylene layer.
3. power cable according to claim 1 is characterized in that: described semiconductive inner restrictive coating is the semiconductive polyethylene layer.
4. according to claim 1 or 2 or 3 described power cables, it is characterized in that: the mixing core that described conductor (1) is made up of steel wire lead and aluminum conductor, described steel wire lead is positioned at the center of conductor (1), and steel wire lead and aluminum conductor are the formed conductor of steel reinforced aluminium conductor structure (1).
5. power cable according to claim 4 is characterized in that: described armour (7) is made up of many galvanized steel wire ropes (71), and described galvanized steel wire rope (71) is positioned at the structure that same periphery distributes and the protective layer that forms with cross section.
6. power cable according to claim 4; it is characterized in that: described armour (7) is made up of many galvanized steel wire ropes (71) and some Al-alloy metal silks, and described galvanized steel wire rope (71) and some Al-alloy metal silks are to be spaced and to be positioned at the structure of same periphery distribution and the protective layer that forms with cross section.
7. power cable according to claim 4 is characterized in that: described steel reinforced aluminium conductor structure is meant: some strands of steel wire leads are positioned at the center, and some strands of aluminum conductors are outside the steel wire lead and be twisted into the steel reinforced aluminium conductor conductor mutually.
8. according to claim 1 or 2 or 3 described power cables, it is characterized in that: described armouring external protection (8) is the pitch outer wrapping layer of polypropylene rope as inner reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020143070XU CN201725623U (en) | 2010-03-29 | 2010-03-29 | Submarine electric power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020143070XU CN201725623U (en) | 2010-03-29 | 2010-03-29 | Submarine electric power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201725623U true CN201725623U (en) | 2011-01-26 |
Family
ID=43493971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020143070XU Expired - Lifetime CN201725623U (en) | 2010-03-29 | 2010-03-29 | Submarine electric power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201725623U (en) |
-
2010
- 2010-03-29 CN CN201020143070XU patent/CN201725623U/en not_active Expired - Lifetime
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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: 20110126 |