CN108335791B - Suspension cable for water photovoltaic project - Google Patents
Suspension cable for water photovoltaic project Download PDFInfo
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- CN108335791B CN108335791B CN201810159611.9A CN201810159611A CN108335791B CN 108335791 B CN108335791 B CN 108335791B CN 201810159611 A CN201810159611 A CN 201810159611A CN 108335791 B CN108335791 B CN 108335791B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000725 suspension Substances 0.000 title claims abstract description 14
- 238000005260 corrosion Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000010426 asphalt Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000007667 floating Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 238000004049 embossing Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000006750 UV protection Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000032683 aging Effects 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
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003562 lightweight material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- RISJOGDJTKTMIG-UHFFFAOYSA-N (2-hydroxyphenyl)-phenylmethanone phenol Chemical compound C1(=CC=CC=C1)O.OC1=C(C(=O)C2=CC=CC=C2)C=CC=C1 RISJOGDJTKTMIG-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
- H01B7/12—Floating cables
-
- 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
-
- 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
-
- 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
-
- 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
Landscapes
- Electric Cable Installation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a suspension cable for a photovoltaic project on water, which sequentially comprises a power transmission cable core, a buoyancy lining, a radial waterproof layer, an anti-corrosion asphalt layer, an outer sheath, a tension reinforcing piece and an anti-corrosion winding rope from inside to outside; the thickness of the buoyancy lining is converted according to the volume of the buoyancy lining, and the volume calculation formula of the buoyancy lining is as follows:wherein V is Floating device Is the volume of the buoyancy lining, ρ Floating device For the density of the buoyancy lining material, V Water and its preparation method For the cable drainage volume ρ Water and its preparation method For density of water, V i For the volume, ρ, of each layer structure of the cable i The density of the structural material for each layer of the cable; ρ Floating device Much smaller than ρ Water and its preparation method . The cable disclosed by the invention can adapt to construction and installation environments of a water photovoltaic project, has special functions of radial water resistance, longitudinal water resistance, ultraviolet resistance and the like of the water photovoltaic project, can be directly suspended below a horizontal plane, and does not need any related accessories in water.
Description
Technical Field
The invention relates to a suspension cable for a water photovoltaic project.
Background
The photovoltaic project has been developed for many years as a clean energy source, and has very important effects on resource consumption and environmental protection degree due to high mature technology and safety performance, so that the photovoltaic energy source is widely popularized. The construction of large-area land photovoltaic projects is carried out in China, and a large amount of land resources are occupied. Governments are also aware of problems with limited and excessive use of land resources, so that land photovoltaic projects are limited, photovoltaic enterprises begin to turn into ideas, and enter water photovoltaic projects. Because the project environment conditions of the above-water photovoltaic and the ground photovoltaic are greatly changed, if the original common cable is adopted, besides the safety performance of the power transmission, the construction difficulty of laying and installing is increased, the cost of related matched devices is also increased, and the project profit is directly extruded by the improvement of the difficulty and the cost, so that the project stand is influenced. In order to further develop the photovoltaic project, green water mountain of more environment is urgently needed to design and develop a novel cable product which has special functions of radial water resistance, longitudinal water resistance, ultraviolet resistance and the like of the photovoltaic project on water, can be directly suspended below a horizontal plane and does not need any relevant accessories in water so as to meet the special environment use requirement of the photovoltaic project on water.
The cable is designed to be suspended below the horizontal plane, and mechanical external force influences such as bending, pulling and pressing and the like of the cable caused by water surface waves are mainly considered to be reduced; meanwhile, the solar ultraviolet light is favorable for weakening the light aging influence on the cable after being reflected and refracted by the water surface; and can satisfy the cable laying installation after, do not influence the operation of the small-size ship of surface of water.
Disclosure of Invention
The invention aims to provide a suspension cable for a water photovoltaic project, which can adapt to the construction and installation environment of the water photovoltaic project, can be directly suspended below a water level and does not need any related accessories in water.
The suspension cable for the waterborne photovoltaic project comprises a power transmission cable core, a buoyancy lining, a radial waterproof layer, an anti-corrosion asphalt layer, an outer sheath, a tension reinforcing piece and an anti-corrosion winding rope from inside to outside in sequence; the thickness of the buoyancy lining is converted according to the volume of the buoyancy lining, and the volume calculation formula of the buoyancy lining is as follows:
wherein V is Floating device Is the volume of the buoyancy lining, ρ Floating device For the density of the buoyancy lining material, V Water and its preparation method For the cable drainage volume ρ Water and its preparation method For density of water, V i For the volume, ρ, of each layer structure of the cable i The density of the structural material for each layer of the cable; ρ Floating device Much smaller than ρ water.
The power transmission cable core is provided with an insulating cable core, buoyancy filling and tightening belts from inside to outside; the insulated wire core and the buoyancy filling twisted into a cable; the buoyancy filling is circular or fan-shaped.
The buoyancy lining is extruded on the periphery of the power transmission cable core or wrapped on the periphery of the power transmission cable core after being made into a strip.
The outer part of the buoyancy lining which is extruded at the periphery of the power transmission cable core is wrapped with a layer of water blocking tape; and wrapping a layer of composite water-blocking tape outside the buoyancy lining around the periphery of the power transmission cable core after the strip is manufactured.
The radial waterproof layer is a closed metal pipe.
The closed metal pipe is provided with semicircular tangential embossing, and the radius of the semicircle is 5-8 mm.
The tensile force reinforcing piece is a plurality of glass fiber reinforced plastic round rods with Young modulus not lower than 500GPa which are uniformly wound on the periphery of the outer sheath.
The anti-corrosion winding rope is a polypropylene rope, and the winding pitch is the diameter of the polypropylene rope.
The anti-corrosion asphalt permeates among the outer sheath, the tension reinforcing piece and the anti-corrosion winding rope and is solidified together.
After the technical scheme is adopted, the invention has the following positive effects: the cable disclosed by the invention is a cable which can adapt to construction and installation environments of a water photovoltaic project, has special functions of radial water resistance, longitudinal water resistance, ultraviolet resistance and the like of the water photovoltaic project, can be directly suspended below a horizontal plane, and does not need any related accessories in water.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
Fig. 1 is a schematic structural view of the present invention.
The reference numerals in the drawings are:
the power transmission cable comprises a power transmission cable core 1, an insulated conductor core 11, buoyancy filling 12, a binding belt 13, a buoyancy lining 2, a radial waterproof layer 3, anti-corrosion asphalt 4, an outer sheath 5, a tension reinforcement 6, an anti-corrosion winding rope 7 and a water blocking belt 8.
Detailed Description
Example 1
See fig. 1, the suspension cable for the photovoltaic project on water sequentially comprises a power transmission cable core 1, a buoyancy lining 2, a water blocking belt 8, a radial waterproof layer 3, an anti-corrosion asphalt layer 4, an outer sheath 5, a tension reinforcing piece 6 and an anti-corrosion winding rope 7 from inside to outside.
The power transmission cable core 1 comprises an insulating cable core 11, buoyancy filling 12 and a binding belt 13 from inside to outside; the insulated wire core 11 and the buoyancy filling 12 are twisted into a cable; the buoyancy fill 12 is circular or fan-shaped. The insulated wire core 11 is composed of a conductor and insulation, and can be a single core or a multi-core, and the insulated wire core of the medium voltage cable further comprises a conductor shield, insulation, an insulation shield and a metal shield outside the insulation, wherein the metal shield adopts copper strips or copper wires. The buoyancy fill 12 is a lightweight material having a density substantially less than water, such as an inflatable or skeletal support polyolefin material.
The buoyancy lining 2 is a lightweight material having a density substantially less than that of water. The buoyancy lining 2 is wrapped around the periphery of the power transmission cable core 1 after being extruded or made into a strip. The buoyancy lining 2 plays a role in enabling the cable to have axial water blocking capability so as to prevent the cable from accidentally entering water, and can control the invasion of water within an effective range. The water-blocking layer is wrapped outside the extrusion type buoyancy lining layer, or a layer of water-blocking layer is compounded outside the wrapping type buoyancy lining layer, so that the problem of blocking the longitudinal extension of water after the water-blocking layer swells is solved. The buoyancy liner and buoyancy fill constitute the primary buoyancy element of the cable, providing the cable with buoyancy suspended in the water.
In addition to the electrical and mechanical material consideration of each structure of the cable, according to the requirement of the cable on the underwater laying suspension function, the requirement of providing the buoyancy of the capability is the key to meet the requirement that the cable can suspend below the water surface. In each layer of structure of the cable, the material density of the insulating structure, the anti-corrosion layer structure, the outer sheath structure and the anti-corrosion winding rope structure of the cable are close to and smaller than the density of water, so that the structure can be omitted and does not participate in calculation in order to simplify calculation, and the material density and the volume of the conductor structure, the metal pipe radial waterproof structure and the tension reinforcement structure of the cable are calculated in an important mode. The thickness of the buoyancy lining 2 is converted according to the volume of the buoyancy lining 2, and the volume calculation formula of the buoyancy lining 2 is as follows:
wherein V is Floating device After the volume of the buoyancy lining is calculated, the thickness of the buoyancy lining can be calculated by calculating the size of the power transmission cable core, and the thickness of the extrusion die or the wrapping strip is specified by the thickness;
ρ floating device For buoyancy lining material density, which is a material property, the density of the material is much less than that of water, together to provide buoyancy in the water;
V water and its preparation method The cable is suspended below the horizontal plane according to the design and is soaked in water integrally, so that the cable drainage volume is the integral volume of the cable;
ρ water and its preparation method In order to achieve the density of water,
V i for the volume of each layer of the structure of the cable,
ρ i the density of the structural material for each layer of the cable; ρ Floating device Much smaller than ρ Water and its preparation method 。
The radial waterproof layer 3 is a closed metal pipe. The closed metal pipe is provided with semicircular tangential embossing, and the radius of the semicircle is 5 mm-8 mm. The radial waterproof layer 3 has a waterproof effect, and according to the suspension function of the cable, the metal pipe material adopts aluminum or aluminum alloy material with smaller specific gravity. The metal tube is corrugated according to the requirement of frequent bending of the cable in water caused by waves. The wrinkles have a circular wrinkle structure and a spiral wrinkle structure, wherein the circular wrinkle structure has a stronger longitudinal waterproof property. The shape of the wrinkles is semicircular tangent, the radius of the semicircle is controlled to be 5-8 mm, and the cable with the structure can be bent and swung along with waves in water without being damaged by external force.
The anticorrosive layer 4 is a layer of coated anticorrosive asphalt, and 10-20 parts of engine oil is added into the common asphalt, so that the molding deformation capacity of the asphalt is improved, and the anticorrosive capacity of the waterproof metal layer is prevented from being lost due to cracking of the anticorrosive layer of the asphalt in the cable bending process.
The tension reinforcing member 6 is a plurality of glass fiber reinforced plastic round bars with Young's modulus not lower than 500GPa uniformly wound around the outer sheath 5. Compared with the steel wires commonly used in the cable, the cable has the characteristics of small specific gravity and high strength, is suitable for the laying and installing function requirements of the suspension cable in water, and has the functions of fixing the cable position and providing the tension capability.
The anti-corrosion winding rope 7 is a polypropylene rope, and the winding pitch is the diameter of the polypropylene rope. And the outer sheath 5, the tension reinforcing piece 6 and the anti-corrosion winding rope are integrally fused into a whole through the whole immersed anti-corrosion asphalt treatment, so that the requirement of frequent wave bending of the cable is met. Meanwhile, the o-hydroxybenzophenone phenol ultraviolet light absorber is added into the asphalt, so that the ultraviolet light aging resistance of the asphalt can be effectively improved, the cable outer layer is wrapped by the asphalt, the solar ultraviolet light radiation capacity to the inside of the cable is effectively blocked, and the ultraviolet light aging resistance of the cable is protected.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (4)
1. Suspension cable for photovoltaic project on water, its characterized in that: the anti-corrosion cable comprises a power transmission cable core (1), a buoyancy lining (2), a radial waterproof layer (3), an anti-corrosion asphalt layer (4), an outer sheath (5), a tension reinforcing piece (6) and an anti-corrosion winding rope (7) from inside to outside in sequence; the thickness of the buoyancy lining (2) is converted according to the volume of the buoyancy lining (2), and the volume calculation formula of the buoyancy lining (2) is as follows:
，
wherein V is Floating device Is the volume of the buoyancy lining, ρ Floating device For the density of the buoyancy lining material, V Water and its preparation method For the cable drainage volume ρ Water and its preparation method For density of water, V i For the volume, ρ, of each layer structure of the cable i The density of the structural material for each layer of the cable; ρ Floating device Less than ρ Water and its preparation method ；
The power transmission cable core (1) comprises an insulating cable core (11), buoyancy filling (12) and a binding belt (13) from inside to outside; the insulated wire core (11) and the buoyancy filling (12) are stranded into a cable; the buoyancy filling (12) is circular or fan-shaped; the radial waterproof layer (3) is a closed metal pipe; the closed metal pipe is provided with semicircular tangential embossing, and the radius of the semicircle is 5 mm-8 mm; the tension reinforcing piece (6) is a plurality of glass fiber reinforced plastic round rods with Young modulus not lower than 500GPa uniformly wound on the periphery of the outer sheath (5); the anti-corrosion asphalt permeates between the outer sheath (5), the tension reinforcing piece (6) and the anti-corrosion winding rope (7) and is solidified together.
2. The suspension cable for a water photovoltaic project according to claim 1, characterized in that: the buoyancy lining (2) is extruded on the periphery of the power transmission cable core (1) or wrapped on the periphery of the power transmission cable core (1) after being made into a strip.
3. The suspension cable for a water photovoltaic project according to claim 2, characterized in that: a layer of water-blocking tape (8) is wrapped outside the buoyancy lining (2).
4. The suspension cable for a water photovoltaic project according to claim 1, characterized in that: the anti-corrosion winding rope (7) is a polypropylene rope, and the winding pitch is the diameter of the polypropylene rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159611.9A CN108335791B (en) | 2018-02-26 | 2018-02-26 | Suspension cable for water photovoltaic project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159611.9A CN108335791B (en) | 2018-02-26 | 2018-02-26 | Suspension cable for water photovoltaic project |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108335791A CN108335791A (en) | 2018-07-27 |
| CN108335791B true CN108335791B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810159611.9A Active CN108335791B (en) | 2018-02-26 | 2018-02-26 | Suspension cable for water photovoltaic project |
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| Country | Link |
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| CN (1) | CN108335791B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230361A (en) * | 2019-08-23 | 2021-01-15 | 新昌县凌智机械有限公司 | Underground protection device and method for traffic engineering construction optical cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1044738A (en) * | 1964-10-07 | 1966-10-05 | Boston Insulated Wire & Cable | Buoyant electric cable |
| CN201796648U (en) * | 2010-06-29 | 2011-04-13 | 天津市立孚光电线缆开发有限公司 | Buoyancy-controllable photoelectric comprehensive cable |
| CN201984870U (en) * | 2011-03-08 | 2011-09-21 | 远东电缆有限公司 | Suspension submarine cable |
| CN205406154U (en) * | 2016-01-04 | 2016-07-27 | 中科电力装备科技有限公司 | Light aluminum alloy suspension power cable |
| KR20170041079A (en) * | 2015-10-06 | 2017-04-14 | 국방과학연구소 | Underwater tow type neutral buoyancy optical fiber composite cable |
-
2018
- 2018-02-26 CN CN201810159611.9A patent/CN108335791B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1044738A (en) * | 1964-10-07 | 1966-10-05 | Boston Insulated Wire & Cable | Buoyant electric cable |
| CN201796648U (en) * | 2010-06-29 | 2011-04-13 | 天津市立孚光电线缆开发有限公司 | Buoyancy-controllable photoelectric comprehensive cable |
| CN201984870U (en) * | 2011-03-08 | 2011-09-21 | 远东电缆有限公司 | Suspension submarine cable |
| KR20170041079A (en) * | 2015-10-06 | 2017-04-14 | 국방과학연구소 | Underwater tow type neutral buoyancy optical fiber composite cable |
| CN205406154U (en) * | 2016-01-04 | 2016-07-27 | 中科电力装备科技有限公司 | Light aluminum alloy suspension power cable |
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| CN108335791A (en) | 2018-07-27 |
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