CN114954821A - Floating type photovoltaic structure on sea and photovoltaic system on sea - Google Patents
Floating type photovoltaic structure on sea and photovoltaic system on sea Download PDFInfo
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- CN114954821A CN114954821A CN202210767082.7A CN202210767082A CN114954821A CN 114954821 A CN114954821 A CN 114954821A CN 202210767082 A CN202210767082 A CN 202210767082A CN 114954821 A CN114954821 A CN 114954821A
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- floating
- offshore
- photovoltaic
- superstructure
- photovoltaic structure
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- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4453—Floating structures carrying electric power plants for converting solar energy into electric energy
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to the technical field of offshore photovoltaics, and discloses an offshore floating photovoltaic structure and an offshore photovoltaic system. The invention has the beneficial effects that: the photovoltaic system can normally work in a certain wind, wave and current environment, the triangular geometric shape of the superstructure is convenient for multi-module splicing, the construction difficulty is reduced, and the photovoltaic system is suitable for large-scale and large-area application on the sea.
Description
Technical Field
The invention relates to the technical field of offshore photovoltaics, in particular to an offshore floating photovoltaic structure and an offshore photovoltaic system.
Background
The offshore photovoltaic system is used for building a photovoltaic power station on the sea surface water area environment. At present, offshore photovoltaic power stations are mainly divided into a pile driving type and a floating type, a shallow water area within 3 meters is mainly in a fixed pile driving and fixed support type mode, and a small amount of fixed pile driving and tracking support type are assisted; the deep water floating type (about 3-10 meters) is still in a demonstration stage and is an important development direction of future water surface photovoltaics.
The marine photovoltaic system needs to pay attention to a series of problems of economy, structural safety, adaptability facing extremely severe weather and the like of the whole system because of severe installation environment, the main difficulty in construction of the large-scale water surface floating photovoltaic system is fixation of the floating body, storm flow and water level lifting greatly affect the floating body, the floating body cannot be fixed well, the problems of drifting or collision and the like occur, and the construction difficulty is large when the large-area floating body is installed and fixed.
Therefore, technical personnel in the field are dedicated to develop a marine floating photovoltaic structure and a marine photovoltaic device to solve the problems that the photovoltaic plate is difficult to fix in a wind, wave and current environment and large-area floating bodies are difficult to construct when being installed and fixed.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the invention is that the photovoltaic panel is difficult to fix in a wind, wave and current environment, and the large-area floating body is difficult to construct when being installed and fixed.
In order to achieve the purpose, the invention provides a marine floating type photovoltaic structure which comprises an upper-layer building and a lower floating body structure, wherein the upper-layer building is triangular, the lower floating body structure is three variable cross-section cylinders, the variable cross-section cylinders are hollow steel pipes meeting strength conditions and are uniformly and symmetrically distributed by taking the central point of the upper-layer building as the center, and the radius of the upper parts of the variable cross-section cylinders is larger than that of the lower parts of the variable cross-section cylinders.
Preferably, the ratio of the radius of the upper part to the radius of the lower part of the variable cross-section cylinder is 1: 4-1: 2.
Preferably, the ratio of the sum of the cross-sectional areas of the lower parts of the three variable cross-section cylinders to the area of the superstructure is 1: 3-1: 9.
Preferably, the superstructure is in the shape of an equilateral triangle.
Preferably, the edge of the superstructure is a beveled edge with a slope.
Preferably, each side of the superstructure is 50 metres in length.
Preferably, the hollow steel pipe is a thick-walled steel pipe having a ratio of the outer diameter to the wall thickness of less than 20.
Preferably, the connection mode between the lower floating body structure and the superstructure is welding or riveting.
The invention also provides a marine photovoltaic system which comprises a plurality of floating bodies formed by splicing the marine floating photovoltaic structures.
Preferably, a plurality of the floating photovoltaic structures are connected by adopting a connecting mode including but not limited to clamping and bolt connection.
The offshore floating photovoltaic structure and the offshore photovoltaic system provided by the invention can reduce the motion response amplitude of the offshore photovoltaic system, realize the normal work of the photovoltaic system in a certain storm flow environment, facilitate the multi-module splicing of the geometrical shape of the equilateral triangle of the superstructure, reduce the construction difficulty, and are suitable for large-scale and large-area offshore application.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic perspective view of a floating photovoltaic structure in the sea according to a preferred embodiment of the present invention;
FIG. 2 is a front view of a floating offshore photovoltaic structure according to a preferred embodiment of the present invention;
figure 3 is a bottom view of the floating offshore photovoltaic structure of a preferred embodiment of the present invention.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, elements that are structurally identical are represented by like reference numerals, and elements that are structurally or functionally similar in each instance are represented by like reference numerals. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components has been exaggerated in some places in the drawings where appropriate for clarity of illustration.
As shown in fig. 1 to 3, the marine floating photovoltaic structure comprises an upper building 1 and a lower floating body structure 2, wherein the upper building is triangular, the lower floating body structure is three variable cross-section cylinders 3, the variable cross-section cylinders 3 are hollow steel pipes meeting strength conditions, the variable cross-section cylinders are uniformly and symmetrically distributed by taking the central point of the upper building 1 as the center, and the radius of the upper parts of the variable cross-section cylinders 3 is larger than that of the lower parts of the variable cross-section cylinders 3.
The connection mode of the lower floating body structure 2 and the upper building 1 includes but is not limited to welding or riveting, and the connection mode can be selected within the optional range as long as the connection mode can firmly fix the two.
The floating photovoltaic structure can be used as a structural carrier for floating operation of the photovoltaic panel on the sea, and normal operation of a photovoltaic system in a certain wind, wave and current environment can be realized. The superstructure 1 is mainly used for laying photovoltaic solar panels and corresponding supporting facilities thereof.
In a preferred embodiment of the invention, the superstructure 1 is an equilateral triangle, the geometry of the equilateral triangle is convenient for splicing multiple modules, the side length of the triangle is preferably 50 meters, which not only ensures enough bearing area, but also meets the requirement of reducing construction difficulty, and is suitable for large-scale and large-area application on the sea. The edge of the superstructure 1 is a sloping edge with a slope, so as to be beneficial to reducing the impact force of sea waves.
The floating body structure 2 is three variable cross-section columns 3 which are used for providing buoyancy for the platform and supporting superstructure. The three variable cross-section cylinders 3 are uniformly and symmetrically distributed by taking the central point of the superstructure 1 as the center, so that no transverse inclination or longitudinal inclination exists when the platform floats in still water.
The structural member of the variable cross-section cylinder 3 is a hollow steel pipe satisfying the strength condition to provide sufficient buoyancy and a freeboard. The radius of the lower cylinder is larger, so that larger buoyancy can be provided, the structure draught is reduced, and meanwhile, better stability and larger freeboard are provided. The radius of the upper cylinder is small, and only enough strength is required to support the superstructure.
In a preferred embodiment of the invention, the ratio of the upper radius to the lower radius of the variable section cylinder 3 is 1: 6-1: 2, preferably 1:4, and the area ratio of the sum of the cross-sectional areas of the lower parts of the three variable cross-section cylinders 3 to the area of the superstructure 1 is 1: 3-1: 9, preferably 1:5, to realize larger buoyancy and improve stability.
The marine photovoltaic system adopts the body that forms of the concatenation of a plurality of above-mentioned marine floating photovoltaic structures, adopt the connected mode including but not limited to joint, bolted connection between the marine floating photovoltaic structure, as long as can convenient and fast and firm link together each marine floating photovoltaic structure can.
By taking an offshore photovoltaic system platform with a typical size as an example, the offshore photovoltaic system with the offshore floating photovoltaic structure in the preferred embodiment of the invention is applied to the calculation and evaluation of the stationarity of the device, the initial stability of the device is higher than 70 meters, and the stationarity performance is better.
In addition, the motion response of the floating body structure under the action of waves is calculated, the motion Response Amplitude Operator (RAO) of the platform is small, the motion response of the platform caused by unit wave height under the action of head waves is changed along with the wave period, the response peak value of the platform at the Heave (Heave) degree of freedom is about 1.4m, and when the platform encounters large-period waves, the platform is in a wave-following flow state at the Heave (Heave) degree of freedom; the peak Roll (Roll) degree of freedom response was about 6 °, and the peak Pitch (Pitch) degree of freedom response was about 8 °, both at a smaller level.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.
Claims (10)
1. The utility model provides a marine floating photovoltaic structure, its characterized in that includes superstructure and lower floater structure, superstructure shape is triangle-shaped, floater structure is three variable cross section cylinder down, the variable cross section cylinder is the hollow steel pipe that satisfies the intensity condition, and uses superstructure central point is even symmetric distribution as the center, variable cross section cylinder upper portion radius is greater than the lower part radius.
2. The floating offshore photovoltaic structure of claim 1, wherein the ratio of the radius of the upper portion to the radius of the lower portion of the variable cross-section cylinder is 1: 4-1: 2.
3. The floating offshore photovoltaic structure of claim 1, wherein the ratio of the sum of the cross-sectional areas of the lower portions of the three variable area cylinders to the area of the superstructure is 1: 3-1: 9.
4. The floating offshore photovoltaic structure of claim 1, wherein the superstructures are equilateral triangles in shape.
5. The floating photovoltaic structure of claim 4, wherein the superstructure edge is a sloped hypotenuse.
6. The floating offshore photovoltaic structure of claim 5, wherein each side of the superstructure is 50 meters in length.
7. The offshore floating photovoltaic structure of claim 1, wherein the hollow steel pipe is a thick walled steel pipe having a ratio of steel pipe outside diameter to wall thickness of less than 20.
8. The floating offshore photovoltaic structure of claim 1, wherein the connection between the lower buoyant structure and the superstructure is by means including, but not limited to, welding or riveting.
9. An offshore photovoltaic system, comprising a plurality of floating bodies spliced from the offshore floating photovoltaic structure of claim 1.
10. The offshore photovoltaic system of claim 9, wherein the offshore floating photovoltaic structures are connected by means including, but not limited to, clamping and bolting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767082.7A CN114954821A (en) | 2022-06-30 | 2022-06-30 | Floating type photovoltaic structure on sea and photovoltaic system on sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767082.7A CN114954821A (en) | 2022-06-30 | 2022-06-30 | Floating type photovoltaic structure on sea and photovoltaic system on sea |
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| Publication Number | Publication Date |
|---|---|
| CN114954821A true CN114954821A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210767082.7A Pending CN114954821A (en) | 2022-06-30 | 2022-06-30 | Floating type photovoltaic structure on sea and photovoltaic system on sea |
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| CN (1) | CN114954821A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450916A (en) * | 2019-08-30 | 2019-11-15 | 天津大学 | A kind of wind and wave resistance floatation type sea photovoltaic power generation platform |
| CN210555481U (en) * | 2019-08-30 | 2020-05-19 | 天津大学 | Floating type offshore photovoltaic power generation platform |
| CN210555482U (en) * | 2019-08-30 | 2020-05-19 | 天津大学 | Anti-wave floating type offshore photovoltaic power generation platform |
| KR20210087259A (en) * | 2020-01-02 | 2021-07-12 | 한국수력원자력 주식회사 | Floating offshore photovoltaic system |
| KR20210151422A (en) * | 2020-06-05 | 2021-12-14 | 한국산업기술시험원 | Buoyance body and Floating Structure For Floated Solar Energy Generating Structure |
| CN114475947A (en) * | 2022-03-07 | 2022-05-13 | 长江勘测规划设计研究有限责任公司 | Floating type semi-submersible platform for offshore photovoltaic power station |
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2022
- 2022-06-30 CN CN202210767082.7A patent/CN114954821A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450916A (en) * | 2019-08-30 | 2019-11-15 | 天津大学 | A kind of wind and wave resistance floatation type sea photovoltaic power generation platform |
| CN210555481U (en) * | 2019-08-30 | 2020-05-19 | 天津大学 | Floating type offshore photovoltaic power generation platform |
| CN210555482U (en) * | 2019-08-30 | 2020-05-19 | 天津大学 | Anti-wave floating type offshore photovoltaic power generation platform |
| KR20210087259A (en) * | 2020-01-02 | 2021-07-12 | 한국수력원자력 주식회사 | Floating offshore photovoltaic system |
| KR20210151422A (en) * | 2020-06-05 | 2021-12-14 | 한국산업기술시험원 | Buoyance body and Floating Structure For Floated Solar Energy Generating Structure |
| CN114475947A (en) * | 2022-03-07 | 2022-05-13 | 长江勘测规划设计研究有限责任公司 | Floating type semi-submersible platform for offshore photovoltaic power station |
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