CN111739680A - Multifunctional landing submarine cable - Google Patents
Multifunctional landing submarine cable Download PDFInfo
- Publication number
- CN111739680A CN111739680A CN202010705643.1A CN202010705643A CN111739680A CN 111739680 A CN111739680 A CN 111739680A CN 202010705643 A CN202010705643 A CN 202010705643A CN 111739680 A CN111739680 A CN 111739680A
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- Prior art keywords
- landing
- submarine
- submarine cable
- section
- layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/14—Submarine cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/204—Metal tubes, e.g. lead sheaths composed of lead
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- Insulated Conductors (AREA)
Abstract
The invention discloses a multifunctional landing submarine cable which comprises landing sections and submarine sections, wherein the landing sections are connected with the submarine sections, and anode blocks are respectively arranged at the connection parts of the two landing sections and the submarine sections; the landing section and the seabed section are formed by combining three submarine cables after being wound by cabling belts, and each submarine cable consists of a water-blocking conductor, a conductor shielding layer, an insulating shielding layer, a semi-conductive water-blocking tape, a lead sleeve and a PE sheath; a filling strip is arranged between the submarine cable and the cabling belting; the cable forming wrapping band is externally provided with an armor layer. Through the mode, the submarine cable adopts two sheaths, so that the submarine cable meets different requirements of the seabed and different landing use environments, and the armoring made of two metal materials is adopted, so that the current-carrying capacity of a landing section is provided, the cost is increased slightly, and the economic performance of the submarine cable is ensured to the maximum extent.
Description
Technical Field
The invention relates to the field of power cables, in particular to a multifunctional landing submarine cable.
Background
At present, the submarine cable is used more and more widely along with the popularization of offshore wind power generation, the requirement on the submarine cable is higher and higher, and the submarine cable cannot avoid the use environment of landing on a tidal flat at present, so the following problems can exist after the conventional submarine cable is landed:
1) metal sleeving location uncertainty: because the conventional submarine cable adopts the semi-conductive PE sheath and forms a multi-point grounding mode of the metal sheath after contacting with water, but the landing position of the submarine cable can be affected by the rising tide and the falling tide of the tide water, so that the landing submarine cable sometimes has water or sometimes has no water, the landing position tidal flat can have the condition of no water, the length is not fixed, and the metal sheath has overhigh induced voltage under the condition of no water, so that the sheath is punctured, and the submarine cable is damaged.
2) The problem of reduction of current-carrying capacity: generally, the temperature of landing environment, the thermal resistance of soil and the like are worse than those of the seabed, the transmission capacity is obviously reduced at the landing position, and in order to solve the problem of ensuring the transmission capacity of the whole line, the conductor specification selection of the submarine cable needs to be according to the landing environment, so that the utilization rate of the submarine cable at the seabed section is low, and the cost is wasted.
3) Insect prevention and ant prevention: after the submarine cable is landed, the sites of termite and worm damage are serious, especially in southern areas such as Guangdong, and the like, the conventional submarine cable does not have a single termite-proof layer, and the termites can directly bite the lead sheath, so that the submarine cable is damaged seriously.
4) The steel wire armor has the following corrosion prevention problems: at present, the steel wire armor is subjected to anticorrosion measures of brushing asphalt on the surface after the steel wire armor is produced, but produced armor metal wires are closely adjacent, the asphalt cannot completely wrap each armor metal wire, and the inner layer of the armor metal wires cannot be coated with the asphalt, so that the condition that only one side of each steel wire is provided with an anticorrosion material occurs, and after the steel wire armor is operated for a long time, the steel wire armor is seriously corroded.
Disclosure of Invention
The invention mainly solves the technical problem of providing a multifunctional landing submarine cable, which can solve the problems existing after the conventional submarine cable lands.
In order to solve the technical problems, the invention adopts a technical scheme that: a multifunctional landing submarine cable comprises landing sections and submarine sections, wherein the landing sections are connected with the submarine sections, and anode blocks are respectively arranged at the connection positions of the two landing sections and the submarine sections;
the submarine cable comprises a water-blocking conductor, a conductor shielding layer, an insulating shielding layer, a semi-conductive water-blocking tape, a lead sleeve and a PE sheath, wherein the conductor shielding layer, the insulating shielding layer, the semi-conductive water-blocking tape, the lead sleeve and the PE sheath are sequentially wrapped on the water-blocking conductor from inside to outside;
a filling strip is arranged between the submarine cable and the cabling wrapping belt, an installation groove is formed in the filling strip, and an optical cable is arranged in the installation groove;
the cable forming wrapping band is externally provided with an armor layer, the armor layer in the landing section is armored by hard copper wires, and the armor layer in the seabed section is armored by steel wires.
In a preferred embodiment of the present invention, the PE sheath in the landing section is an insulation-grade PE sheath.
In a preferred embodiment of the invention, a copper strip is installed between the lead sheath and the armor layer in the landing section, and the copper strip penetrates through the cabling belt and the PE sheath.
In a preferred embodiment of the present invention, the PE sheath in the undersea section is a semi-conductive PE sheath.
In a preferred embodiment of the invention, when the landing section is connected with the seabed section, the copper wires and the steel wires are welded one by one, and the welding position is brushed with anti-corrosion paint.
In a preferred embodiment of the present invention, an insect-proof layer is disposed between the cabling belt and the armor layer in the landing section.
In a preferred embodiment of the present invention, the insect-resistant layer is a brass band.
In a preferred embodiment of the present invention, the armor surface is coated with a layer of fluorine coating.
In a preferred embodiment of the invention, a first polypropylene rope is wound between the insect-proof layer and the armor layer.
In a preferred embodiment of the present invention, the armor layer is wrapped with a second polypropylene rope.
The invention has the beneficial effects that: the invention relates to a multifunctional landing submarine cable, which adopts two sheaths to ensure that a submarine cable simultaneously meets different requirements under different use environments of the seabed and landing, and two armoring materials made of metal materials are adopted to provide the current-carrying capacity of a landing section, increase the cost less and ensure the economic performance of the submarine cable to the maximum extent.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-functional landing subsea cable landing section.
FIG. 2 is a schematic cross-sectional view of a subsea section of a multifunctional landing subsea cable.
The parts in the drawings are numbered as follows: 1. a water blocking conductor; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a semiconductive water-blocking tape; 6. a lead sleeve; 7. a PE sheath; 8. filling the strip; 9. cabling belt; 10. an insect-repellent layer; 11. a first polypropylene strand; 12. an armor layer; 13. a second polypropylene strand; 14. an optical cable.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1 and 2, a multifunctional landing submarine cable comprises landing sections and submarine sections, wherein the landing sections are connected with the submarine sections, anode blocks are respectively installed at the connection positions of the two landing sections and the submarine sections, the anode blocks are made of metal materials with good activity, an armored metal wire of the submarine cable is regarded as a protected cathode, the armored metal wire is protected from corrosion, and the anode blocks are arranged at the landing positions at the two ends of the submarine cable, so that the anode blocks can be conveniently observed and replaced in time.
The landing section and the submarine section are formed by combining three submarine cables after being wound by cabling belts 9, each submarine cable is composed of a water-blocking conductor 1, a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a semi-conductive water-blocking tape 5, a lead sleeve 6 and a PE sheath 7, and the conductor shielding layer 2, the insulating layer 3, the insulating shielding layer 4, the semi-conductive water-blocking tape 5, the lead sleeve 6 and the PE sheath 7 are sequentially wrapped on the water-blocking conductor 1 from inside to outside.
The PE sheath 7 in the landing section is an insulation-grade PE sheath 7, a copper strip is arranged between the lead sheath and the armor layer 12 in the landing section, the copper strip is spaced for 1km, the copper strip penetrates through the cabling wrapping belt 9 and the PE sheath 7, and waterproof glue is used for waterproof treatment at the penetrating position.
The PE sheath 7 in the seabed section is a semi-conductive PE sheath 7, and the multipoint grounding of the submarine cable can still be realized in the seabed section.
Thirdly, a filling strip 8 is arranged between the submarine cable and the cabling belting 9, a mounting groove is formed in the filling strip 8, an optical cable 14 is mounted in the mounting groove, and the filling strip 8 is not only used for supporting the cabling belting 9, but also plays a role in protecting the optical cable 14.
An armor layer 12 is arranged outside the cabling belting 9, the armor layer 12 in the landing section is armored by hard copper wires,
the hard copper wire is made of a non-magnetic material, meanwhile, the resistance is small, the current-carrying capacity of the landing section of the submarine cable can be greatly improved, and the current-carrying capacity of the hard copper wire armor is calculated to be 1.17 times that of the steel wire armor (220 kV 3 x 500 is taken as an example).
Therefore, when the type of the submarine cable is selected, the conductor section of the submarine cable does not need to be enlarged due to the landing section environment, and the cost of the whole submarine cable is greatly reduced.
The armor layer 12 in the submarine section is armored by steel wires, the copper wires and the steel wires are welded one by one when the landing section is connected with the submarine section, anti-corrosion paint is brushed on the welding position, the mechanical strength of the welding position can reach more than 80% of that of the hard copper wire armor body through test verification, and meanwhile, welding points are staggered, so that the requirement on the overall strength of the submarine cable cannot be influenced.
The surface of the armor layer 12 is sprayed with a layer of fluorine coating, the fluorine coating is fluorine coating anti-corrosion paint for a submarine, and the anti-corrosion paint has the functions of preventing biological adhesion and the like besides a good anti-corrosion function.
When the anticorrosive paint is sprayed, the spraying should be carried out before the production of the metal wires of the armor layer 12, and each metal wire is sprayed, so that the incomplete spraying phenomenon is avoided.
An insect-proof layer 10 is arranged between the cabling wrapping belt 9 and the armor layer 12 in the landing section, the insect-proof layer 10 is a brass strip, the thickness of the brass strip is 0.3mm, the insect-proof layer 10 is lapped and overlapped on the surface of the cabling wrapping belt 9, and the structure can be produced by a lapping machine of the cabling wrapping belt 9 without equipment improvement.
A first polypropylene rope 11 is wound between the insect-proof layer 10 and the armor layer 12, and a second polypropylene rope 13 is wrapped outside the armor layer 12.
Compared with the prior art, the multifunctional landing submarine cable provided by the invention adopts two sheaths, so that the submarine cable can meet different requirements of the seabed and different landing use environments, and the armoring made of two metal materials is adopted, so that the current-carrying capacity of a landing section is provided, the cost is increased slightly, the economic performance of the submarine cable is ensured to the maximum extent, a brass strip is adopted to use a better structure applied to the submarine cable on land, so that the submarine cable can meet the requirements of the environment after landing, and the anticorrosion performance of the submarine cable is improved to the maximum extent by using an anticorrosion paint on the basis of increasing the smaller cost.
In the description of the present invention, it should be noted that all the components are general standard components or components known to those skilled in the art, the structure and principle of the components can be known by technical manuals or by conventional test methods, and the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate the orientations or positional relationships based on the drawings or the orientations or positional relationships usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the component referred to must have a specific orientation, be configured and operated in a specific orientation, and thus cannot be understood as limiting the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A multifunctional landing submarine cable is characterized by comprising landing sections and a submarine section, wherein the landing sections are connected with the submarine section, and an anode block is respectively arranged at the connection positions of the two landing sections and the submarine section;
the submarine cable comprises a water-blocking conductor, a conductor shielding layer, an insulating shielding layer, a semi-conductive water-blocking tape, a lead sleeve and a PE sheath, wherein the conductor shielding layer, the insulating shielding layer, the semi-conductive water-blocking tape, the lead sleeve and the PE sheath are sequentially wrapped on the water-blocking conductor from inside to outside;
a filling strip is arranged between the submarine cable and the cabling wrapping belt, an installation groove is formed in the filling strip, and an optical cable is arranged in the installation groove;
the cable forming wrapping band is externally provided with an armor layer, the armor layer in the landing section is armored by hard copper wires, and the armor layer in the seabed section is armored by steel wires.
2. A multifunctional landing submarine cable according to claim 1, wherein said PE sheath in said landing section is an insulation grade PE sheath.
3. The multifunctional landing submarine cable according to claim 2, wherein a copper strip is installed between said lead sheath and said armor layer in said landing section, said copper strip penetrating said cabling belt and said PE sheath.
4. A multifunctional landing submarine cable according to claim 1, wherein said PE jacket in said submarine segment is a semi-conductive PE jacket.
5. The multifunctional landing submarine cable according to claim 1, wherein the copper wires and the steel wires are welded one by one when the landing section is connected with the submarine section, and corrosion-resistant paint is painted on the welded part.
6. A multifunctional landing submarine cable according to claim 1, wherein an insect repellent layer is provided between said cabling tape and said armor layer in said landing section.
7. The multifunctional landing submarine cable according to claim 6, wherein said insect repellent layer is brass tape.
8. A multifunctional submarine landing according to claim 1, wherein said armor surface is coated with a layer of fluorine coating.
9. A multifunctional landing submarine cable according to claim 6, wherein a first polypropylene rope is wound between the insect repellent layer and the armor layer.
10. A multifunctional landing submarine cable according to claim 1, wherein said armor layer is coated with a second polypropylene cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705643.1A CN111739680A (en) | 2020-07-21 | 2020-07-21 | Multifunctional landing submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705643.1A CN111739680A (en) | 2020-07-21 | 2020-07-21 | Multifunctional landing submarine cable |
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| Publication Number | Publication Date |
|---|---|
| CN111739680A true CN111739680A (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010705643.1A Pending CN111739680A (en) | 2020-07-21 | 2020-07-21 | Multifunctional landing submarine cable |
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| CN (1) | CN111739680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380443A (en) * | 2021-06-16 | 2021-09-10 | 中天科技海缆股份有限公司 | Ultrahigh-voltage submarine cable, production method of ultrahigh-voltage submarine cable and cabling device |
| CN116072338A (en) * | 2023-04-06 | 2023-05-05 | 亚星线缆集团有限公司 | Submarine ultrahigh-voltage cable with temperature measuring unit |
| CN117198623A (en) * | 2023-09-13 | 2023-12-08 | 宇盛电气有限公司 | Low-loss optical fiber composite submarine power cable and manufacturing method thereof |
-
2020
- 2020-07-21 CN CN202010705643.1A patent/CN111739680A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380443A (en) * | 2021-06-16 | 2021-09-10 | 中天科技海缆股份有限公司 | Ultrahigh-voltage submarine cable, production method of ultrahigh-voltage submarine cable and cabling device |
| CN116072338A (en) * | 2023-04-06 | 2023-05-05 | 亚星线缆集团有限公司 | Submarine ultrahigh-voltage cable with temperature measuring unit |
| CN117198623A (en) * | 2023-09-13 | 2023-12-08 | 宇盛电气有限公司 | Low-loss optical fiber composite submarine power cable and manufacturing method thereof |
| CN117198623B (en) * | 2023-09-13 | 2024-07-12 | 宇盛电气有限公司 | Low-loss optical fiber composite submarine power cable and manufacturing method thereof |
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