Floating type offshore photovoltaic platform and use method

Abstract

The invention provides a floating type offshore photovoltaic platform and a use method, the floating type offshore photovoltaic platform comprises a plurality of installation units, a flexible connector is connected between two adjacent installation units, each installation unit comprises a support frame, a floating body part is installed on the support frame, and an anchoring part is connected to the floating body part; the floating body part comprises a buoyancy body which is connected with an anchoring part; the buoyancy body comprises a plurality of floating body units, the plurality of floating body units are stacked and mounted from low to high, each floating body unit is provided with a first buffer groove and a second buffer groove, and the first buffer grooves and the second buffer grooves are matched to buffer the impact of waves; the supporting frame comprises a mounting frame, and the mounting frame is connected with the top of the floating body unit; a plurality of unit mounting plates are mounted in the mounting frame at intervals, and photovoltaic panels are mounted on the unit mounting plates. According to the photovoltaic platform, wave impact is reduced through the first buffer grooves and the second buffer grooves in the floating body units in the buoyancy part and the unit mounting plates in the supporting frame in a clearance mode, and the stability of the photovoltaic platform is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore photovoltaic equipment, and in particular to a floating offshore photovoltaic platform and a use method thereof. Background Art

[0002] Offshore photovoltaic technology, as a highlight in the field of renewable energy, has the core concept of installing photovoltaic panels on the sea surface through a platform, so as to make full use of the unique advantages of the marine environment. The natural cooling effect of seawater can significantly improve the power generation efficiency of photovoltaic panels. The unobstructed sunlight on the sea surface also provides sufficient light resources for photovoltaic panels. Offshore photovoltaic power stations are often close to large power loads, which greatly shortens the distance of power transmission and reduces energy loss during transmission, thereby improving the overall power generation performance. With the continuous advancement of technology and the gradual reduction of costs, the development of offshore photovoltaics shows a trend of expanding to the deep sea. With the increase of water depth, the traditional fixed installation method can no longer meet the demand. Therefore, a floating offshore photovoltaic platform is proposed. The floating platform can flexibly adapt to sea areas of different water depths. However, the sea conditions in the deep sea are far more complicated than those in the near sea, and the impact of waves will increase. The traditional floating platform includes a mounting plate with buoyancy blocks at the bottom of the mounting plate to form an integral platform, and then multiple photovoltaic panels are arranged in a matrix on the mounting plate. When impacted by waves, the impact load brought by the waves all acts on the buoyancy blocks, causing the photovoltaic platform to be greatly impacted. The photovoltaic platform is prone to serious damage and even causes the failure of the entire photovoltaic power station. Summary of the invention

[0003] In order to solve the problem that floating platforms used in existing deep-sea areas are subjected to large wave impacts, resulting in poor stability of the floating platforms, the present invention provides a floating offshore photovoltaic platform and a method for using the same.

[0004] To achieve the above object, the present invention provides the following technical solutions: The present invention proposes a floating offshore photovoltaic platform, comprising a plurality of installation units, wherein a flexible connector is connected between two adjacent installation units, wherein the installation unit comprises a support frame, a floating body is installed at the bottom of the support frame, and an anchoring part is connected to the bottom of the floating body, and the anchoring part is fixed on the seabed; The floating body part includes a buoyancy body, the bottom of which is connected to the anchoring part; the buoyancy body includes a plurality of floating body units, and the plurality of floating body units are stacked and installed from low to high, and the floating body units are provided with a first buffer groove and a second buffer groove, and the first buffer groove and the second buffer groove cooperate to buffer the impact of waves; The support frame comprises a mounting frame, the bottom of which is connected to the top of the floating unit; a plurality of unit mounting plates are installed in the gaps within the mounting frame, and a photovoltaic panel is installed on the top of the unit mounting plates.

[0005] Preferably, fixing bolts are connected between two adjacent floating units.

[0006] Preferably, the floating unit comprises a floating shell, the floating shell is filled with foam blocks, and the floating shell is coated with an asphalt coating layer.

[0007] Preferably, the foam block is prepared from hollow glass microspheres mixed with one or more of polyurethane foam, epoxy foam plastic, polyurethane epoxy rigid foam and polymethyl methacrylate foam.

[0008] Preferably, a plurality of the unit mounting plates are installed at intervals in the mounting frame to form a truss-type structure.

[0009] Preferably, the anchoring portion comprises a mooring cable, one end of the mooring cable is fixed to the bottom of the buoyant body, and the other end of the mooring cable is connected to a gravity anchor, and the gravity anchor is used to be fixed on the seabed.

[0010] Preferably, a reinforcing fixing is provided on the gravity anchor; The reinforcing fixing member comprises a guide frame, the guide frame is slidably mounted on the gravity anchor, a claw plate is connected to the guide frame, the claw plate is rotatably mounted on the bottom of the gravity anchor, and a reset member and a fixing member are connected to the guide frame.

[0011] Preferably, the reset member includes a guide rod, one end of which is fixed to the guide frame, and the other end is installed in the gravity anchor, a spring is installed in the gravity anchor, one end of the spring is fixed to the end of the guide rod away from the end connected to the guide frame, and the other end of the spring is connected to the gravity anchor.

[0012] Preferably, the fixing member comprises a connecting platform, the connecting platform is arranged on the guide frame, a fixing rod is rotatably connected to the connecting platform, and the fixing rod is threadedly connected to the guide frame.

[0013] The present invention proposes a method for using a floating offshore photovoltaic platform, comprising the following steps: Move the installation unit to a designated sea area location, connect the flexible connector between two adjacent installation units; and fix the anchoring part on the seabed; When the photovoltaic platform is hit by waves, the waves flow through the first buffer groove and the second buffer groove to reduce the impact load on the floating body; part of the waves flow through the gap between two adjacent unit mounting plates and wash away the attachments on the photovoltaic panel.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a floating offshore photovoltaic platform. The photovoltaic platform adopts multiple installation units connected by flexible connectors, so that the photovoltaic platform can better adapt to the fluctuation of the water surface, reduce the overall structural instability caused by the fluctuation of the water surface, and improve the wind and wave resistance of the photovoltaic platform. The floating body is installed by stacking multiple floating units from low to high, which provides sufficient buoyancy support for the support frame. The cooperation of the first buffer groove and the second buffer groove effectively buffers the impact of waves, further enhances the stability of the platform, and enables the platform to better adapt to various sea conditions and ensure the stability and continuity of photovoltaic power generation. The support frame realizes efficient and dense installation of photovoltaic panels through the combination of the installation frame and the unit installation plate, and the unit installation plate is provided with a gap, which can reduce the impact of wind and waves on the unit installation plate, improves the capacity and efficiency of photovoltaic power generation, and ensures the safety and reliability of photovoltaic panels in complex marine environments. The photovoltaic platform is also fixed to the seabed through an anchoring part, which effectively prevents the drift and overturning of the platform, and further improves the overall stability and safety. Furthermore, the outer shell of the floating body in the photovoltaic platform is filled with foam blocks, which provide stable buoyancy for the photovoltaic platform. The coating of the asphalt coating layer enhances the waterproof and anti-corrosion properties of the outer shell of the floating body, effectively extending the service life of the floating unit.

[0015] Furthermore, in the photovoltaic platform, multiple unit mounting plates in the support frame are installed in the gaps in the mounting frame to form a truss-type structure. When the support frame is hit by waves, part of the waves can flow through the hollow structure inside the truss-type structure, thereby reducing the impact of the waves on the unit mounting plates and enhancing the stability of the photovoltaic platform.

[0016] Furthermore, the combined use of mooring cables and gravity anchors in this photovoltaic platform not only achieves stable fixation of the floating offshore photovoltaic platform, prevents the platform from drifting and capsizing, but also improves the platform's ability to resist wind and waves in severe sea conditions; the strengthening of the fixings further enhances the fixing effect of the gravity anchors, and increases the stability and firmness of the fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a floating offshore photovoltaic platform proposed by the present invention; Figure 2 This is a schematic diagram of a top view of the structure of a floating offshore photovoltaic platform proposed by the present invention; Figure 3 This is a side structural schematic diagram of a floating offshore photovoltaic platform proposed by the present invention; Figure 4 A schematic diagram of the connection between a photovoltaic support and a floating body in a floating offshore photovoltaic platform proposed by the present invention; Figure 5This is a schematic structural diagram of a buoyancy portion in a floating offshore photovoltaic platform proposed by the present invention; Figure 6 This is a schematic structural diagram of a reinforcing fixing member in a floating offshore photovoltaic platform proposed by the present invention.

[0018] In the accompanying drawings: 1. Anchoring part; 10. Mooring rope; 11. Gravity anchoring; 2. Floating part; 20. Floating unit; 21. First buffer groove; 22. Fixing bolt; 23. Second buffer groove; 3. Support frame; 30. Mounting frame; 31. Support rod; 32. Unit mounting plate; 4. Photovoltaic panel; 5. Flexible connector; 6. Fixing ring; 7. Reinforced fixing; 70. Guide frame; 71. Claw plate; 72. Guide rod; 73. Spring. DETAILED DESCRIPTION

[0019] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] See also Figure 1~Figure 3 The present invention proposes a floating offshore photovoltaic platform, including multiple installation units, and a flexible connector 5 is connected between two adjacent installation units, and then the multiple installation units are connected through the flexible connector 5 to form a floating offshore photovoltaic platform. Through the flexible connector 5, the photovoltaic platform can better adapt to the fluctuation of the water surface and reduce the overall structural instability caused by the fluctuation of the water surface. At the same time, the flexible connector 5 allows the photovoltaic platform to be flexibly adjusted and positioned during the installation process to adapt to different water environments and installation requirements, and when a certain installation unit or flexible connector fails, it can be easily removed and replaced without affecting the surrounding floating array.

[0026] The flexible connector 5 includes a mounting sleeve, in which threaded holes are respectively arranged at the positions of the two end heads thereof, one end of a threaded rod is respectively connected to the threaded holes at the two end heads, a ball head is arranged on the other end head of the threaded rod, a ball head seat is arranged on the mounting unit, and the ball head is movably installed in the ball head seat, through the cooperation of the ball head seat and the ball head, the position on the threaded rod connected to the mounting unit can be movable, and then the mounting unit connected through the flexible connector 5 can move freely with the fluctuation of the water surface, thereby improving the angle and range of the photovoltaic panel 4 to receive solar radiation, and thus improving the power generation efficiency.

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The installation unit includes a support frame 3, a photovoltaic panel 4 is installed on the top of the support frame 3, a floating body 2 is installed at the bottom of the support frame 3, a flexible connector 5 is connected to the floating body 2 on each installation unit, and at least four flexible connectors 5 are connected to the floating body 2 in the installation unit located inside the photovoltaic platform, and at least two flexible connectors 5 are connected to the floating body 2 in the installation unit located at the edge of the photovoltaic platform. The support frame 3 floats on the sea surface through the floating body 2, providing a stable buoyancy platform for the support frame 3, and an anchoring part 1 is connected to the bottom of the floating body 2, which is fixed on the seabed. The photovoltaic platform is fixed by the anchoring part 1, so that the photovoltaic platform floats at a fixed sea area position to prevent the photovoltaic platform from being washed away by waves; in this embodiment, an installation unit includes a support frame 3, and a floating body 2 is respectively connected to the four corners of the support frame 3, and an anchoring part 1 is connected to the bottom of each floating body 2.

[0028] See also Figure 1~Figure 4 The support frame 3 includes a mounting frame 30, and support rods 31 are vertically arranged at the four corners of the mounting frame 30. A fixing ring 6 is connected to the bottom end of the support rod 31, and the bottom end surface of the fixing ring 6 is fixed to the top of the floating body 2. A plurality of unit mounting plates 32 are installed in the gap in the mounting frame 30. The plurality of unit mounting plates 32 are installed in the mounting frame 30 with gaps to form a truss-type structure. When impacted by waves, the waves can pass through the gap between two adjacent unit mounting plates 32, thereby reducing the impact load of the waves on the unit mounting plates 32, improving the stability of the photovoltaic platform, and protecting the integrity of the photovoltaic panel 4. The photovoltaic panel 4 is installed on the top of the unit mounting plate 32. At the same time, the waves passing through the gap between two adjacent unit mounting plates 32 can clean the surface of the photovoltaic panel 4 and clean off the attachments attached to the surface of the photovoltaic panel 4.

[0029] See also Figure 4 and Figure 5The floating body 2 includes a buoyancy body, the bottom of which is connected to the anchoring part 1; the buoyancy body includes a plurality of buoyancy units 20, and the plurality of buoyancy units 20 are stacked and installed from low to high. According to the wave conditions in different sea areas, the number of stacked buoyancy units 20 can be adjusted according to the local maximum wave height, and then the height of the support frame 3 from the sea surface can be adjusted. A fixing bolt 22 is connected between two adjacent buoyancy units 20, and the fixing bolt 22 is made of nylon material. A first buffer groove 21 and a second buffer groove 23 are arranged on the buoyancy unit 20. Through the first buffer groove 21 Cooperating with the second buffer tank 23 to buffer the impact of waves, the waves generate resistance in the floating unit 20, consume the impact of the waves, thereby reducing the impact load of the waves on the support frame 3 as a whole, and improving the stability of the platform; wherein, the floating unit 20 includes a floating shell, the floating shell is filled with foam blocks, the floating shell is coated with an asphalt coating layer, the floating shell is made of high molecular HDPE material, and the foam blocks are prepared from one or more mixed hollow glass microspheres of polyurethane foam, epoxy foam plastic, polyurethane epoxy rigid foam and polymethyl methacrylate foam.

[0030] See also Figure 1~Figure 3 The anchoring part 1 includes a mooring cable 10, one end of which is fixed to the bottom of the buoyant body, and the other end of the mooring cable 10 is connected to a gravity anchor 11, which is used to be fixed on the seabed, thereby fixing the photovoltaic platform to prevent the photovoltaic platform from moving under the action of waves and drifting to other sea areas.

[0031] See also Figure 6A reinforcing fixing member 7 is provided on the gravity anchor 11; the reinforcing fixing member 7 includes a guide frame 70, which is slidably installed on the gravity anchor 11, and a claw plate 71 is connected to the bottom end of the guide frame 70. The claw plate 71 is rotatably installed in a mounting groove provided at the bottom of the gravity anchor 11. A reset member and a fixing member are connected to the guide frame 70. The claw plate 71 is rotated by the guide frame 70, so that the bottom of the claw plate 71 is embedded in the sand and gravel on the seabed, thereby further fixing the gravity anchor 11 and providing stability for the gravity anchor 11 to be fixed to the seabed. The reset member includes a guide rod 72, the top end of which is fixed to the guide frame 70, and the bottom end of the guide rod 72 extends into the gravity anchor 11. The guide rod 72 is movably mounted in an installation cavity provided in the gravity anchor 11, and a spring 73 is installed in the installation cavity. One end of the spring 73 is fixed to the end of the guide rod 72 away from the guide frame 70, and the other end of the spring 73 is connected to the gravity anchor 11. When the guide frame 70 moves, the spring 73 is compressed, causing the spring 73 to deform, preparing for the guide frame 70 to return to its initial position. When the fixation of the gravity anchor 11 on the seabed is removed, the guide frame 70 is restricted by the contact fixing member, and the guide frame 70 returns to its initial position under the elastic force of the spring 73. The fixing part includes a connecting platform, which is arranged on the guide frame 70. A fixing rod is rotatably connected to the connecting platform. The fixing rod is threadedly connected to the guide frame 70. The fixing rod fixes the position of the guide frame 70 on the gravity anchor 11 to prevent the guide frame 70 from moving and affecting the fixation of the claw plate 71 on the seabed.

[0032] Preferably, a winch is installed on the floating unit 20 located at the bottom of the buoyancy body, and one end of the mooring cable 10 is connected to the winch, so that when it is moved or not in use, the mooring cable 10 is retracted and released through the winch.

[0033] The present invention also proposes a method for using a floating offshore photovoltaic platform; the method for using the above-mentioned photovoltaic platform specifically comprises the following steps: Move the installation unit to a designated sea area location, connect the flexible connector between two adjacent installation units; and fix the anchoring part on the seabed; Specifically, multiple installation units are moved to designated positions, and two adjacent installation units are connected by flexible connectors 5, and their positions are adjusted to form a photovoltaic platform; the mooring rope 10 is lowered by a winch, so that the gravity anchor 11 falls on the seabed for fixation, and the guide frame 70 is pressed to rotate the claw plate 71, and the bottom end of the claw plate 71 is stuck in the sand and gravel on the seabed, and the guide frame 70 is fixed on the gravity anchor 11 by a fixing rod; the fixation of the photovoltaic platform is completed.

[0034] When the photovoltaic platform is hit by waves, the waves flow through the first buffer groove and the second buffer groove to reduce the impact load on the floating body; part of the waves flow through the gap between two adjacent unit mounting plates and wash away the attachments on the photovoltaic panel.

[0035] Specifically, when the photovoltaic platform is hit by waves, the waves flow through the first buffer groove 21 and the second buffer groove 23 of the floating unit 20 in the installation unit, reducing the impact of the waves on the floating body 2 and improving the stability of the photovoltaic platform. Part of the waves flow through the gap between two adjacent unit mounting plates 32, reducing the impact of the waves on the unit mounting plates 32, and at the same time, the waves flowing through the gap wash away the attachments on the photovoltaic panel 4.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A floating offshore photovoltaic platform, characterized in that: The invention comprises a plurality of installation units, wherein a flexible connector (5) is connected between two adjacent installation units, and the installation unit comprises a support frame (3), a floating body (2) is installed at the bottom of the support frame (3), and an anchoring part (1) is connected to the bottom of the floating body (2), and the anchoring part (1) is fixed on the seabed; The floating body (2) comprises a buoyancy body, the bottom of which is connected to the anchoring part (1); the buoyancy body comprises a plurality of buoyancy units (20), and the plurality of buoyancy units (20) are stacked and installed from low to high, and the buoyancy units (20) are provided with a first buffer groove (21) and a second buffer groove (23), and the first buffer groove (21) and the second buffer groove (23) cooperate to buffer the impact of waves; The support frame (3) comprises a mounting frame (30), the bottom of the mounting frame (30) being connected to the top of the floating unit (20); a plurality of unit mounting plates (32) are mounted in gaps within the mounting frame (30), and a photovoltaic panel (4) is mounted on the top of the unit mounting plate (32).

2. A floating offshore photovoltaic platform according to claim 1, characterized in that: A fixing bolt (22) is connected between two adjacent floating units (20).

3. A floating offshore photovoltaic platform according to claim 2, characterized in that: The floating body unit (20) comprises a floating body shell, the floating body shell is filled with foam blocks, and the floating body shell is coated with an asphalt coating layer.

4. A floating offshore photovoltaic platform according to claim 3, characterized in that: The foaming block is prepared from hollow glass microspheres mixed with one or more of polyurethane foam, epoxy foam plastic, polyurethane epoxy rigid foam and polymethyl methacrylate foam.

5. The floating offshore photovoltaic platform according to claim 1, characterized in that: A plurality of the unit mounting plates (32) are installed at intervals in the mounting frame (30) to form a truss-type structure.

6. The floating offshore photovoltaic platform according to claim 1, characterized in that: The anchoring portion (1) comprises a mooring cable (10), one end of the mooring cable (10) is fixed to the bottom of the buoyant body, and the other end of the mooring cable (10) is connected to a gravity anchor (11), and the gravity anchor (11) is used to be fixed on the seabed.

7. A floating offshore photovoltaic platform according to claim 6, characterized in that: The gravity anchor (11) is provided with a reinforcing fixing member (7); The reinforcing fixing member (7) comprises a guide frame (70), the guide frame (70) being slidably mounted on the gravity anchor (11), the guide frame (70) being connected to a claw plate (71), the claw plate (71) being rotatably mounted on the bottom of the gravity anchor (11), and the guide frame (70) being connected to a reset member and a fixing member.

8. A floating offshore photovoltaic platform according to claim 7, characterized in that: The reset member comprises a guide rod (72), one end of the guide rod (72) being fixed to the guide frame (70), and the other end being installed in the gravity anchor (11), a spring (73) being installed in the gravity anchor (11), one end of the spring (73) being fixed to an end of the guide rod (72) away from the end connected to the guide frame (70), and the other end of the spring (73) being connected to the gravity anchor (11).

9. The floating offshore photovoltaic platform according to claim 7, characterized in that: The fixing member comprises a connecting platform, the connecting platform is arranged on the guide frame (70), a fixing rod is rotatably connected to the connecting platform, and the fixing rod is threadedly connected to the guide frame (70).

10. A method for using a floating offshore photovoltaic platform, characterized in that: The following steps are involved: Move the installation unit to a designated sea area location, connect the flexible connector between two adjacent installation units; and fix the anchoring part on the seabed; When the photovoltaic platform is hit by waves, the waves flow through the first buffer groove and the second buffer groove to reduce the impact load on the floating body; part of the waves flow through the gap between two adjacent unit mounting plates and wash away the attachments on the photovoltaic panel.

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