Floating type photovoltaic floating body platform suitable for ice sea area

Abstract

The utility model provides a floating type photovoltaic floating body platform suitable for an ice sea area, which comprises a lower floating body structure and a plurality of struts, a mooring system and assembly supporting steel strands on the lower floating body structure, the lower floating body structure is a reinforced concrete floating box in concave-convex design shaped like a Chinese character'hui ', and a plurality of embedded clamping grooves are formed in the concave position of the lower floating body structure and used for embedding and fixing the struts. The assembly supporting steel strand is connected to the top of the supporting column in a penetrating mode and used for installing a photovoltaic assembly, and the supporting column structure comprises a positive cone and an inverted cone which are of an integrated structure. The floating body platform based on the structure can form a floating type photovoltaic group, and a floating type photovoltaic matrix is formed. The utility model has the advantages that the structure rigidity and stability are improved, the structure icebreaking capability is improved, the icebreaking efficiency is improved, the cost is reduced, the manufacturing process is simple, the installation is flexible and fast, the later operation and maintenance are convenient, and the floating photovoltaic large-scale development and construction are realized.

Description

Technical Field

[0001] This utility model relates to the field of offshore floating photovoltaic power generation technology, specifically to a floating photovoltaic floating platform suitable for ice-covered sea areas. Background Technology

[0002] my country has a large sea area and enormous potential for offshore photovoltaic development. Floating photovoltaic power can be developed in conjunction with nearshore offshore wind power and marine ranching to achieve multi-energy integration and complementarity, which is conducive to promoting the transformation of my country's energy structure with higher quality.

[0003] Sea ice is one of the main constraints on marine development in ice-covered sea areas. Parts of the Bohai Sea and the northern Yellow Sea in my country are typical ice-covered areas. Sea ice has varying degrees of impact on maritime transportation, nearshore marine engineering facilities, mariculture, fisheries production, and marine energy development. In ice-covered sea areas, sea ice, under the influence of wind, waves, and currents, can easily damage marine engineering structures.

[0004] Currently, both domestic and international research on floating photovoltaic (PV) systems is in the early stages of testing and demonstration. There are no fully commercialized floating PV projects internationally. The development and construction of floating PV systems in ice-covered waters is even more challenging, and traditional simple floating solutions for inland or near-shore waters are insufficient. Traditional ice-resistant floating structures, particularly for floating PV foundations in ice-covered areas, primarily draw on ice-resistant measures from oil and gas marine engineering, employing semi-submersible floating platforms and using vertical cylindrical structures for direct ice resistance or conical structures for ice breaking. However, vertical cylindrical structures experience significant stress during ice breaking, requiring sophisticated mooring designs; steel conical structures require external additions, significantly increasing costs. Given the higher economic requirements of floating PV foundations, these two ice-resistant methods are not the optimal choice.

[0005] Therefore, it is necessary to develop a floating photovoltaic platform with ice-resistant capabilities suitable for ice-covered sea areas, providing a feasible solution for the implementation and development of floating photovoltaic power generation in ice-covered sea areas in my country. Utility Model Content

[0006] The purpose of this utility model is to provide a floating photovoltaic floating platform suitable for ice-covered sea areas, which improves structural rigidity and stability, enhances structural icebreaking capability and efficiency, reduces costs, has a simple manufacturing process, allows for flexible and quick installation, facilitates later operation and maintenance, and enables large-scale development and construction of floating photovoltaic systems.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A floating photovoltaic floating body platform applicable to ice area waters, comprising a lower floating body structure, several support columns thereon, a mooring system, and component support steel strands. The lower floating body structure is a reinforced concrete floating box with a "return" - shaped concave - convex design. Embedded card slots are provided at the depressions of the lower floating body structure for fixing the columns, and the component support steel strands are connected through the tops of the columns for installing photovoltaic components.

[0009] The support column consists of an inner vertical column structure and an outer column structure. The vertical column structure includes a lower insertion plate and a vertical column. The vertical column is fixedly connected to the center of the lower insertion plate, and the lower insertion plate is inserted into the embedded card slot of the lower floating body structure. The column structure includes an integral regular cone and an inverted cone. A sleeve that can penetrate the vertical column structure is provided inside the column structure. The column structure and the vertical column structure are further connected and fixed through column tie rods arranged on both sides of the vertical column. The column tie rods are screwed into the nut sleeves on the lower insertion plate.

[0010] Furthermore, a vertical column sleeve and a column tie rod sleeve are provided inside the column structure, which can respectively allow the vertical column and the column tie rod of the vertical column structure to penetrate through them.

[0011] Furthermore, longitudinal reinforcing ribs, circumferential reinforcing ribs, top reinforcing ribs, and bottom reinforcing ribs are provided inside the column structure. The circumferential reinforcing ribs are arranged in layers, and the longitudinal reinforcing ribs connect adjacent layers of circumferential reinforcing ribs.

[0012] Furthermore, reinforcing plates are provided on both sides of the top of the column structure. The reinforcing plates are located outside the column tie rods, and anchor rings are provided inside the reinforcing plates.

[0013] Furthermore, the cone angle of the regular cone or the inverted cone is 60° - 70°.

[0014] Furthermore, an embedded slot is provided at the top of the embedded card slot, and several insertion plates at the bottom extend into the lower floating body structure.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The floating photovoltaic floating body platform applicable to ice area waters of the utility model improves the structural stiffness and stability, enhances the ice - breaking ability of the structure, increases the ice - breaking efficiency, reduces the cost, has a simple manufacturing process, is flexible and fast to install, is convenient for later operation and maintenance, and realizes the large - scale development and construction of floating photovoltaics.

[0017] Specifically, the overall center of gravity of the lower floating body structure of the floating body platform is relatively low, which is beneficial for pressing down and breaking ice. The wide "field" - shaped lower floating body is adopted and is below the water line, improving the restoring damping of the floating body platform and making the stability of the floating body platform better; the vertical pole structure is assembled and installed, and the fixed support structure is used, which is flexible and fast to install, reduces costs, and is convenient for the removal, maintenance and replacement of the support structure, facilitating later operation and maintenance; the combination form of the vertical pole structure and the support structure can enhance the structural stiffness. The support structure is a combined positive and inverted cone structure integrated as one body. Compared with the straight column structure, the cone structure changes the extrusion failure of sea ice into bending failure, can significantly reduce the sea ice load, and improve the ice - breaking ability of the support structure; the upper part of the support structure is an inverted cone, and the lower part is a positive cone. The diameter at the water line is smaller, the total ice force received by the structure is smaller, and at the same time, the wave load can be reduced, enhancing the structural stability. The upper - down - inverted - positive cone form can achieve that when flat sea ice rushes towards the floating body platform and the floating body platform undergoes a roll angle, the upper cone of one side support moves down to achieve pressing - down bending ice - breaking, and the lower cone of the other side support moves up to achieve lifting - up bending ice - breaking, greatly improving the ice - breaking efficiency and having excellent ice - resistance performance; the floating body platform relies on the gravity of the lower floating body structure and the cone form to break ice. The ice load is small, and there are no special requirements for the mooring lines and anchoring foundations required by the floating body platform, which can be selected according to the site conditions, reducing the cost of the mooring system; using component - supported steel strands instead of purlins can reduce the upper weight, lower the center of gravity of the floating body, and the floating body has better stability, which is beneficial for ice - breaking. Without the steel purlins, the steel structure usage can be reduced, and the cost can be lowered; in the present utility model, the floating body platform is mainly composed of reinforced concrete, steel, steel strands and fittings. The material sources are extensive, the manufacturing process is simple and mature, and the installation is convenient and fast. Multiple floating body platforms can form a floating photovoltaic group to form a floating photovoltaic matrix, realizing the large - scale development and construction of floating photovoltaics. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic overall layout diagram of the present utility model.

[0019] Figure 2 It is a schematic diagram of the lower floating body structure of the present utility model.

[0020] Figure 3 It is a schematic diagram of the support buried structure of the present utility model.

[0021] Figure 4 It is a schematic diagram of the connection relationship of the support structure of the present utility model.

[0022] Figure 5 It is a schematic sectional view of the support structure of the present utility model.

[0023] Figure 6 It is a schematic diagram of the bottom of the support structure of the present utility model.

[0024] Figure 7 It is a schematic diagram of ice - breaking of the present utility model (1).

[0025] Figure 8 It is the ice-breaking schematic diagram (II) of the present utility model.

[0026] Reference numerals: 1. Lower floating body structure; 2. Embedded card slot; 3. Lower insertion plate; 4. Vertical rod; 5. Nut sleeve; 6. Strut tie rod; 7. Countersunk head bolt; 8. Tie rod fastening nut; 9. Positive cone; 10. Inverted cone; 11. Longitudinal stiffening rib; 12. Circumferential stiffening rib; 13. Bottom plate stiffening rib; 14. Strut tie rod sleeve; 15; Vertical rod sleeve; 16. Reinforcement plate; 17. Anchor ring; 18. Component support steel strand; 19. Mooring system; 20. Photovoltaic module. Specific embodiments

[0027] The embodiments of the present utility model will be further described in detail below with reference to the drawings.

[0028] As Figure 1 shown, a floating photovoltaic floating body platform applicable to ice-covered sea areas includes a lower floating body structure 1 and several struts thereon, a mooring system 19, and a component support steel strand 18. The component support steel strand 18 is connected through the tops of the struts to install the photovoltaic module 20. The mooring system 19 fixes the floating body platform to the seabed, and the mooring line and anchoring foundation can be selected according to the seabed and construction conditions. As Figure 2 、 3 shown, the lower floating body structure 1 is a reinforced concrete floating box with a "hui" - shaped concave and convex design, which provides buoyancy for the floating body platform and is conducive to reducing the overall center of gravity. The floating box is below the water line, and the "tian" - shaped design is conducive to increasing the restoring damping of the floating body platform, and the floating body stability is better. Several embedded card slots 2 are provided at the concave parts of the lower floating body structure 1 to fix the struts. The top of the embedded card slot 2 is provided with an insertion slot, and the bottom is provided with several insertion plates extending into the lower floating body structure 1.

[0029] As Figure 3 、 4As shown in Figure 5, the support column consists of an internal upright structure and an external support structure. The upright structure includes a lower insert plate 3 and an upright 4. The upright 4 is fixed to the center of the lower insert plate 3, and the lower insert plate 3 is inserted into the pre-embedded slot 2 of the lower floating body structure 1. The support structure includes an enclosed form composed of an integrally formed positive cone 9 and an inverted cone 10. The cone structure can change the sea ice from compression failure to bending failure, achieving ice breaking and significantly reducing the sea ice load. The support structure has a smaller diameter at the waterline, which is beneficial to reduce ice force and wave load. The support structure is equipped with sleeves that can penetrate the upright structure, namely upright sleeve 15 and support tie rod sleeve 14, which allow the upright 4 and support tie rod 6 of the upright structure to pass through them respectively. The upright structure is used to improve the rigidity of the support structure. The support structure and the upright structure are further connected and fixed by the support tie rods 6 located on both sides of the upright 4. The support tie rods 6 are screwed into the nut sleeve 5 on the lower insert plate 3.

[0030] To further enhance stability, the lower insert plate 3 of the upright structure is further connected and fixed to the pre-embedded slot 2 on both sides by countersunk bolts 7, and sealing measures such as rubber gaskets are used to ensure the water tightness of the support structure; the support tie rod 6 is further connected and fixed to the top of the support structure by tie rod fastening nuts 8, thereby restricting the rotation of the support structure and making the support structure and the upright structure tightly integrated.

[0031] like Figure 5 , 6 As shown, the support structure is equipped with longitudinal reinforcing ribs 11, circumferential reinforcing ribs 12, and top and bottom plate reinforcing ribs 13, thereby improving the strength of the support structure. The circumferential reinforcing ribs 12 are arranged in layers, and the longitudinal reinforcing ribs 11 connect the circumferential reinforcing ribs 12 of adjacent layers. Reinforcing plates 16 are provided on both sides of the top of the support structure, located outside the support tie rod 6, and anchor rings 17 are provided inside the reinforcing plates 16. The component support steel strands 18 are installed on the top of the column structure through the anchor rings 17 and the reinforcing plates 16. Using flexible steel strands instead of purlins reduces the upper weight, lowers the center of gravity of the buoy, facilitates icebreaking, increases the stability of the buoy, and reduces steel consumption, thus lowering the cost.

[0032] Preferably, the cone angle of the upright cone 9 or the inverted cone 10 is 65°.

[0033] A method for implementing a floating photovoltaic platform suitable for ice-covered sea areas involves determining the dimensions of each part of the floating platform based on actual construction conditions. The lower floating structure 1, support structure, and upright structure are prefabricated in a processing area. Then, the lower floating structure 1, upright structure, and support structure are assembled in an assembly area. Component support steel strands 18 and photovoltaic modules 20 are then installed on the support structure. The assembled floating platform is transported to the target sea area using a tugboat or barge, and a mooring system is installed so that the lower floating structure 1 is entirely below the waterline. During long-term service, if the support structure facing the sea ice deforms or is damaged, it can be disassembled, replaced, and repaired by boat for reuse.

[0034] Furthermore, several of the aforementioned floating platforms can be combined to form a floating photovoltaic cluster, thereby creating a floating photovoltaic matrix.

[0035] like Figure 7 , 8 As shown, when the ice floe is thin, the total thrust is small, and the floating platform hardly rolls. The support structure causes the sea ice to bend and break, achieving direct icebreaking. When the ice floe is thick, the total thrust is large, and the floating platform rolls and turns. The lower cone (positive cone 9) of the support structure on the ice-facing side rises to break the ice, while the upper cone (inverted cone 10) of the support structure on the other side moves down to break the ice.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the concept of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A floating photovoltaic floating platform suitable for ice-covered sea areas, characterized in that: It includes a lower floating body structure, several struts thereon, a mooring system, and component support steel strands. The lower floating body structure is a reinforced concrete floating box with a "hui" - shaped concave - convex design. There are several embedded card slots in the concave part of the lower floating body structure for fixing the struts. The component support steel strands are threaded through the top of the struts for installing photovoltaic components. The strut consists of an inner vertical rod structure and an outer strut structure. The vertical rod structure includes a lower insertion plate and a vertical rod. The vertical rod is fixedly connected to the center of the lower insertion plate, and the lower insertion plate is inserted into the embedded card slot of the lower floating body structure. The strut structure includes an integral regular cone and an inverted cone. There is a sleeve in the strut structure that can penetrate the vertical rod structure. The strut structure and the vertical rod structure are further connected and fixed by strut tie rods respectively arranged on both sides of the vertical rod. The strut tie rods are screwed into the nut sleeves on the lower insertion plate.

2. A floating photovoltaic floating platform suitable for ice-covered sea areas according to claim 1, characterized in that: There are a vertical rod sleeve and a strut tie rod sleeve in the strut structure, which can respectively allow the vertical rod of the vertical rod structure and the strut tie rod to penetrate through them.

3. A floating photovoltaic floating platform suitable for ice-covered sea areas according to claim 1 or 2, characterized in that: There are longitudinal reinforcing ribs, circumferential reinforcing ribs, as well as top reinforcing ribs and bottom reinforcing ribs in the strut structure. The circumferential reinforcing ribs are arranged in layers, and the longitudinal reinforcing ribs connect adjacent layers of circumferential reinforcing ribs.

4. A floating photovoltaic floating platform suitable for ice-covered sea areas according to claim 3, characterized in that: There are reinforcing plates on both sides of the top of the strut structure. The reinforcing plates are located outside the strut tie rods, and there are anchor rings in the reinforcing plates.

5. A floating photovoltaic platform suitable for ice-covered sea areas according to claim 4, characterized in that: The cone angle of the regular cone or the inverted cone is 60° - 70°.

6. A floating photovoltaic floating platform suitable for ice-covered sea areas according to claim 1, characterized in that: The top of the embedded card slot has an embedded slot, and the bottom has several insertion plates extending deep into the lower floating body structure.

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