A floating foundation for offshore wind and solar power generation with adjustable photovoltaic panel orientation

Abstract

This invention provides an adjustable photovoltaic panel orientation floating foundation for combined wind and solar power generation at sea, comprising a foundation structure, a sliding rail device, a photovoltaic platform, and a rotation locking device. The foundation structure includes a central column and six side columns. The sliding rail device includes an outer sliding rail and an inner sliding rail; both the outer and inner sliding rails are annular structures. The outer sliding rail is fixedly installed on the top of each side column, and the inner sliding rail is fixedly installed on the top of the central column. The rotation locking device includes a locking lock and a transmission gear device; the transmission gear device is installed on the top of each side column. The locking lock includes a lock cylinder and a locking element; the locking element internally houses a lock cylinder lifting column and a transmission device for driving the locking cylinder lifting column to rise and fall. Each side column has a locking cylinder fixedly installed on its top. This invention solves the problem that pile-based fixed marine photovoltaic power stations are expensive and mainly applicable to shallow waters.

Description

Technical Field

[0001] This invention relates to the field of offshore wind and solar power generation technology, and more particularly to an offshore wind and solar power generation floating foundation with adjustable photovoltaic panel orientation. Background Technology

[0002] Currently, there are many types of foundations for offshore wind turbines, mainly including gravity foundations, monopile foundations, pile group foundations, jacket foundations, caisson foundations, well foundations, and suction cylindrical foundations. Among these, floating wind turbine foundation platforms can be mainly divided into four types according to the principle of static stability: semi-submersible, single-column, tension leg (TLP), and barge. The semi-submersible platform is currently the most commonly used foundation type for floating wind turbines and is relatively well-suited to China's environmental conditions and manufacturing capabilities. A semi-submersible platform generally consists of columns, beams, a heave plate, and a mooring system. In its semi-submersible state, the platform utilizes the widely spaced columns to generate a large moment of inertia, giving the platform good stability. Floating wind turbines using semi-submersible foundations are suitable for a wide range of sea areas, typically with water depths greater than 40 meters. The power generation capacity of wind turbines varies depending on their size, including 2MW, 5MW, 10MW, and 15MW. Different power wind turbines have different requirements for the foundation platform. For semi-submersible platforms, the larger the power of the wind turbine, the higher the stability requirements of the platform, and the larger the space occupied by the platform foundation. Therefore, the usable area is also larger.

[0003] Regarding offshore photovoltaic (PV) power generation, current systems are primarily based on pile foundations (in tidal flats and intertidal zones), while the construction of floating PV power plants is still in its early stages, and their current cost is relatively high. Because pile-based fixed PV power plants anchor the power generation equipment in nearshore or tidal flat areas, they are mainly suitable for shallower waters. Expanding into deeper waters will face significant technical and economic challenges. Floating PV power plants, on the other hand, have a wider range of applications and may become the mainstream form of offshore PV power plants in the future. Therefore, combining floating wind turbines and floating PV power plants can fully utilize wind power infrastructure and increase power generation. Summary of the Invention

[0004] To address the aforementioned technical issues of the high cost of pile-based fixed marine photovoltaic power stations and their primary applicability to shallow waters, this paper proposes a floating foundation for combined wind and solar power generation that allows for adjustable photovoltaic panel orientation. This foundation can accommodate wind turbines of various power ratings, combining offshore wind and solar power generation through shared foundation resources. This approach aims to reduce construction costs and increase production efficiency.

[0005] The technical means employed in this invention are as follows:

[0006] A floating foundation for offshore wind and solar power generation with adjustable photovoltaic panel orientation includes a foundation structure, a sliding rail device, a photovoltaic platform, and a rotation locking device.

[0007] The basic structure includes a central column and six side columns; the central column and the side columns are used to provide buoyancy for the floating foundation, and the six side columns are distributed in a regular hexagon with the central column as the center;

[0008] The slide rail device includes an outer slide rail and an inner slide rail; both the outer slide rail and the inner slide rail are annular structures, the outer slide rail is fixedly installed on the top of each of the side columns, and the inner slide rail is fixedly installed on the top of the central column; both the outer slide rail and the inner slide rail are equipped with a number of slide rail balls that are rolled inside; the bottom surface of the photovoltaic platform is provided with outer slide rail grooves and inner slide rail grooves at positions corresponding to the outer slide rail and the inner slide rail, respectively;

[0009] The rotation locking device includes a fixed lock and a transmission gear device. The transmission gear device is installed on the top of the side column and includes a transmission gear. The bottom surface of the photovoltaic platform is provided with a gear groove, and the transmission gear meshes with the gear groove. The photovoltaic platform is rotated by controlling the rotation of the transmission gear. The fixed lock includes six lock cylinders and three locking elements. The three locking elements are respectively installed on the photovoltaic platform. The locking elements are provided with a lock cylinder lifting column and a transmission device for driving the lock cylinder lifting column to rise and fall. The bottom of the locking elements and the position on the photovoltaic platform corresponding to the locking elements are provided with through holes through which the lock cylinder lifting column can pass. Each side column has a lock cylinder that matches the lock cylinder lifting column fixedly installed on its top.

[0010] Furthermore, the basic structure also includes a bottom ring brace, a bottom side brace, and an upper crossbeam; adjacent side columns are connected by the bottom ring brace, and the bottom and top of the side columns are connected to the central column by the bottom side brace and the upper crossbeam, respectively.

[0011] Furthermore, a meteorological platform is installed on the top of the locking component, and a meteorological monitoring device is installed on the top of the meteorological platform.

[0012] Furthermore, it also includes a central pressure plate device, which includes a central photovoltaic platform and a support base; the bottom of the central photovoltaic platform is fixedly connected to the support base, and the support base passes through the photovoltaic platform and is fixedly installed on the upper surface of the central column.

[0013] Furthermore, both the central column and the side columns are hollow columns, and both the central column and the side columns are equipped with ballast water regulating systems.

[0014] Furthermore, both the outer slide rail and the inner slide rail are provided with annular grooves, and ball bearing bases corresponding one-to-one with the slide rail balls are fixedly installed in the annular grooves, and the slide rail balls are rotatably mounted on the ball bearing bases.

[0015] Furthermore, a transmission gear device is installed on the top of each of the side pillars.

[0016] Furthermore, a buffer rubber ring is provided between the central photovoltaic platform and the support base.

[0017] Furthermore, photovoltaic panels can be laid on the outer surface of the central photovoltaic platform, and the angle of the photovoltaic panels is the optimal angle for receiving sunlight.

[0018] Furthermore, a horizontally installed anti-sway plate is provided in the middle of the side column, and a triangular bracket is welded and fixed between the bottom of the anti-sway plate and the side column.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The floating foundation for offshore wind and solar power generation with adjustable photovoltaic panel orientation provided by the present invention adopts a hexagonal foundation structure to improve foundation stability. A rotatable photovoltaic panel laying platform is set on the upper surface of the foundation to adjust the angle of the photovoltaic panels to receive sunlight, improve the utilization rate of sunlight, and increase power generation.

[0021] 2. The adjustable photovoltaic panel orientation floating foundation for offshore wind and solar power generation provided by this invention makes full use of the large wind turbine foundation structure, combining wind turbines and photovoltaic power generation, reducing the construction cost of photovoltaic platforms and increasing power generation efficiency; by installing a monitoring device for an offshore weather station, the monitoring data can not only be used by the weather station, reducing the number of weather stations installed at sea and reducing installation costs, but also the sunlight data can be used to control the platform rotation to adjust the orientation of the photovoltaic panels, which can effectively improve the sunlight utilization rate of photovoltaic power generation.

[0022] 3. The floating foundation for offshore wind and solar power generation with adjustable photovoltaic panel orientation provided by this invention does not require separate power supply for the fixing lock, transmission gear device and meteorological monitoring device, etc. It can achieve self-sufficiency by relying on photovoltaic power generation. Finally, the wind and solar data can be used to evaluate the wind and solar utilization rate of wind turbines and photovoltaic panels, providing data resources for subsequent optimization work.

[0023] Based on the above reasons, this invention can be widely promoted in the field of offshore wind and solar combined power generation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the offshore wind and solar power combined floating foundation with adjustable photovoltaic panel orientation as described in this invention;

[0026] Figure 2 This is a schematic diagram of the main three-dimensional structure of the wind and solar combined power generation floating foundation described in this invention;

[0027] Figure 3 These are three views of the wind-solar combined power generation floating foundation described in this invention;

[0028] Figure 4 This is a schematic diagram of the basic structure described in this invention;

[0029] Figure 5 This is a schematic diagram of the slide rail device described in this invention;

[0030] Figure 6 This is a schematic diagram of the rotating locking device described in this invention;

[0031] Figure 7 This is a schematic diagram of the inner slide rail structure described in this invention;

[0032] Figure 8 This is a schematic diagram of the photovoltaic platform structure described in this invention;

[0033] Figure 9 This is a schematic diagram of the central pressure plate device described in this invention;

[0034] Figure 10 This is a schematic diagram of the anti-sloshing plate installation structure described in this invention;

[0035] Figure 11 This is a diagram illustrating the division of illumination stages;

[0036] Figure 12 This is a schematic diagram of the rotation state of the wind-solar combined power generation floating foundation described in this invention as the sunlight stage changes.

[0037] In the diagram: 1. Central column; 2. Side columns; 3. Bottom ring support; 4. Bottom side support; 5. Anti-sway plate; 6. Photovoltaic platform; 7. Central pressure plate device; 8. Weather platform; 9. Upper crossbeam; 10. Fixed lock; 11. Transmission gear; 12. Outer slide rail; 13. Inner slide rail; 14. Slide rail ball bearing; 15. Ball bearing base; 16. Outer slide rail groove; 17. Inner slide rail groove; 18. Central photovoltaic platform; 19. Buffer rubber ring; 20. Support base; 21. Rotary locking device; 22. Triangular bracket; 23. Lock cylinder lifting column; 24. Tower; 25. Photovoltaic panel. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0045] Example 1

[0046] like Figure 1-12 As shown, the present invention provides an adjustable photovoltaic panel orientation floating foundation for offshore wind and solar power generation, including a foundation structure, a sliding rail device, a photovoltaic platform 6, a central pressure plate device 7, and a rotation locking device 21.

[0047] like Figure 1-4 As shown, the basic structure includes a central column 1, six side columns 2, a bottom ring brace 3, a bottom side brace 4, and an upper beam 9. The central column 1 and the side columns 2 are used to provide buoyancy for the floating foundation. The six side columns 2 are distributed in a regular hexagon with the central column 1 as the center. Adjacent side columns 2 are connected by the bottom ring brace 3. The bottom and top of the side columns 2 are connected to the central column 1 by the bottom side brace 4 and the upper beam 9, respectively.

[0048] like Figure 5 As shown, the slide rail device includes an outer slide rail 12 and an inner slide rail 13; both the outer slide rail 12 and the inner slide rail 13 are annular structures, the outer slide rail 12 is fixedly installed on the top of each of the side columns 2, and the inner slide rail 13 is fixedly installed on the top of the central column 1; both the outer slide rail 12 and the inner slide rail 13 are equipped with a plurality of slide rail balls 14 that are rolled inside.

[0049] like Figure 8 As shown, the photovoltaic platform 6 is used to lay photovoltaic panels 25 for photovoltaic power generation. In order to maximize the laying area of ​​photovoltaic panels and reduce the amount of steel used, the photovoltaic platform 6 is disc-shaped. The radius of the photovoltaic platform 6 is slightly larger than the circumcircle radius of the regular hexagon formed by the side columns 2, so that the photovoltaic panel area that can be laid is larger with the same amount of steel used.

[0050] To reduce steel consumption and weight, the photovoltaic platform 6 is a grid-shaped disk formed by welding stainless steel pipes. The use of stainless steel ensures corrosion resistance after contact with seawater.

[0051] The bottom surface of the photovoltaic platform 6 is provided with an outer slide rail groove 16 and an inner slide rail groove 17 at positions corresponding to the outer slide rail 12 and the inner slide rail 13, respectively. The outer slide rail 12 and the inner slide rail 13 are respectively installed in the outer slide rail groove 16 and the inner slide rail groove 17, so that the slide rail ball 14 is located between the photovoltaic platform 6 and the outer slide rail 12 and the inner slide rail 13, providing support for the photovoltaic platform 6 and enabling the photovoltaic platform 6 to rotate.

[0052] like Figure 6 As shown, the rotation locking device 21 is used to control the rotation or locking of the photovoltaic platform 6; the rotation locking device 21 includes a fixed lock 10 and a transmission gear device 11;

[0053] The transmission gear device 11 is installed on the top of the side column 2, which can increase the rotational torque of the photovoltaic platform 6 and reduce energy consumption. The transmission gear device 11 includes a transmission gear, and the bottom surface of the photovoltaic platform 6 is provided with a gear groove. The transmission gear meshes with the gear groove to provide power for the rotation of the photovoltaic platform 6. By controlling the rotation of the transmission gear, the photovoltaic platform 6 is driven to rotate.

[0054] The transmission gear device 11 further includes a gear drive device for driving the transmission gear to rotate.

[0055] The fixed lock 10 includes six lock cylinders and three locking components; the three locking components are respectively installed on the photovoltaic platform 6, and the included angle between adjacent locking components is 120°. The locking component is provided with a lock cylinder lifting column 23 and a transmission device for driving the lock cylinder lifting column 23 to rise and fall. The bottom of the locking component and the position on the photovoltaic platform 6 corresponding to the locking component are provided with through holes through which the lock cylinder lifting column 23 can pass.

[0056] Each of the side pillars 2 is fixedly installed with a lock cylinder that matches the lock cylinder lifting pillar 23; the three locking members can simultaneously face one of the lock cylinders.

[0057] When the photovoltaic platform 6 needs to be locked, the lock cylinder lifting column 23 can be controlled to descend by controlling the operation of the transmission device, pass through the through holes on the locking member and the photovoltaic platform 6 in sequence, and then be inserted into the corresponding lock cylinder; when the lock needs to be unlocked, the lock cylinder lifting column 23 can be controlled to rise and leave the lock cylinder.

[0058] The locking component is equipped with a meteorological platform 8, which is shaped like a wine glass. The top of the platform is equipped with meteorological monitoring devices such as wind speed sensor, wind direction sensor, solar radiation sensor, temperature and humidity sensor, rain gauge, and meteorological louver box.

[0059] like Figure 9 As shown, the central pressure plate device 7 is located above the central column 1 and the photovoltaic platform 6, and is used to prevent the photovoltaic platform 6 from moving vertically when it receives wind and wave loads. It includes the central photovoltaic platform 18 and the support base 20.

[0060] The central photovoltaic platform 18 is a hollow structure formed by welding steel plates, with a central opening and the inner wall of the opening tightly attached to the surface of the wind turbine tower 24, and is fixedly connected by screws for easy disassembly; the bottom of the central photovoltaic platform 18 is fixedly connected to the support base 20, and the support base 20 passes through the photovoltaic platform 6 and is fixedly installed on the upper surface of the central column 1 by screws, and the support base 20 can support the entire central pressure plate device 7.

[0061] Furthermore, both the central column 1 and the side columns 2 are hollow columns, and each of them is equipped with a ballast water regulation system. The ballast water level inside the central column 1 and the side columns 2 can be adjusted through the ballast water regulation system, thereby adjusting the buoyancy of the entire floating foundation and ensuring the balance of the floating foundation. For wind and solar power generation foundations, the load and stability requirements are greater than those of ordinary wind turbines. The six side columns 6 can provide sufficient buoyancy. In addition, compared with a three-column platform, the six-directional ballast water regulation system can better keep the platform level and stable, and can also maintain the stability of the platform under the influence of wind and wave loads.

[0062] Furthermore, the cross-sectional radius of the central column 1 is greater than the cross-sectional radius of the side column 2.

[0063] Preferably, in this embodiment, the cross-sectional radius of the central column 1 is slightly larger than that of the side column 2. The cross-sectional radius of the central column 1 is 6m, the cross-sectional radius of the side column 2 is 5m, and the height of both the central column 1 and the side column 2 is 30m.

[0064] Furthermore, such as Figure 3 As shown, the draft of the floating foundation provided in this embodiment is set to 26m to ensure that part of the floating foundation is above the water surface at a certain height, so as to prevent waves on the platform from affecting the normal operation of electrical equipment such as photovoltaic power generation devices.

[0065] Furthermore, the bottom ring support 3 and the bottom side support 4 are hollow steel pipe structures to reduce steel costs.

[0066] Furthermore, the bottom ring support 3 is welded and fixed to the side column 2, and the bottom side support 4 is welded and fixed to the central column 1 and the side column 2 respectively, so as to ensure the overall structural integrity.

[0067] Furthermore, the cross-sectional radius and wall thickness of the bottom ring support 3 are both greater than those of the bottom side support 4. When the bottom ring support 3 has to bear a larger hydrodynamic load than the bottom side support 4, it can better fix the overall shape of the foundation structure.

[0068] Furthermore, since this invention combines wind power generation foundations with photovoltaics, the platform size needs to be increased as much as possible to accommodate the photovoltaic panels. Therefore, the foundation structure size provided by this invention is larger than that of a typical semi-submersible platform.

[0069] Furthermore, the upper beam 9 is a hollow cuboid structure that can provide buoyancy for the floating foundation; the upper beam 9 is welded and fixed to the central column 1 and the side column 2 respectively, and its upper surface is flush with the upper surfaces of the central column 1 and the side column 2.

[0070] Furthermore, the outer slide rail 12 and the inner slide rail 13 are respectively welded and fixed to the side column 2 and the central column 1. The outer slide rail 12 can connect each of the side columns 2 and ensure the stability of the overall foundation structure.

[0071] Furthermore, such as Figure 7 As shown, both the outer slide rail 12 and the inner slide rail 13 are provided with annular grooves. A ball bearing base 15 corresponding to each slide rail ball bearing 14 is fixedly installed in the annular groove. The slide rail ball bearing 14 is rotatably mounted on the ball bearing base 15. The ball bearing base 15 is used to fix the position of each slide rail ball bearing 14 and prevent the slide rail ball bearing 14 from moving during rotation. The surface of the slide rail ball bearing 14 is covered with lubricant to reduce friction when the photovoltaic platform 6 rotates.

[0072] Furthermore, the outer slide rail groove 16 and the inner slide rail groove 17 are respectively formed by welding steel plates.

[0073] Furthermore, the gear drive device is a motor, and the output shaft of the motor is fixedly connected to the transmission gear to drive the transmission gear to rotate, thereby driving the photovoltaic platform 6 to rotate.

[0074] Furthermore, a power source is installed inside the upper crossbeam 9. The gear drive device and the transmission device are electrically connected to the power source. The power source is used to provide power to the gear drive device and the transmission device. The gear drive device can drive the transmission gear to rotate, thereby driving the photovoltaic platform 6 to rotate. The transmission device can drive the lock cylinder lifting column 23 to rise and fall.

[0075] Furthermore, a transmission gear device 11 is installed on the top of each of the side pillars 2.

[0076] Furthermore, both the fixed lock 10 and the transmission gear device 11 are located outside the outer slide rail 12.

[0077] Furthermore, a buffer rubber ring 19 is provided between the central photovoltaic platform 18 and the support base 20. The buffer rubber ring 19 is made of elastic rubber material and is used to reduce the impact force when the central pressure plate device 7 and the photovoltaic platform 6 are squeezed, so as to play a buffer protection role.

[0078] Furthermore, photovoltaic panels can be laid on the outer surface of the central photovoltaic platform 18, with the angle of the photovoltaic panels being the optimal angle for receiving sunlight at 45 degrees.

[0079] Furthermore, the central pressure plate device 7 is equipped with a power conversion device and an energy storage device. The photovoltaic panels on the central photovoltaic platform 18 are electrically connected to the power conversion device, and the power conversion device is electrically connected to the energy storage device. The transmission device, the gear drive device, and the meteorological monitoring device are electrically connected to the energy storage device. The power conversion device is used to store the electrical energy generated by photovoltaic power generation into the energy storage device. The energy storage device can provide power energy for electrical equipment. Therefore, the electrical equipment on the floating foundation of the present invention does not need to be supplied separately and can be self-sufficient by photovoltaic power generation.

[0080] Furthermore, such as Figure 10 As shown, a horizontally installed anti-sway plate 5 is provided in the middle of the side column 2. The anti-sway plate 5 is disc-shaped and parallel to the sea level. A triangular bracket 22 is welded and fixed between the bottom of the anti-sway plate 5 and the side column 2. Since the anti-sway plate 5 is subjected to a large hydrodynamic load when the overall floating foundation is affected by the waves, the triangular bracket 22 can strengthen the structural strength of the anti-sway plate 5. The triangular bracket 22 is a right-angled triangular prism structure, and its two right-angled sides are welded and fixed to the anti-sway plate 5 and the side column 2 respectively.

[0081] The photovoltaic platform 6 described in this invention is horizontally installed. Since the installation of photovoltaic panels requires consideration of two factors—the tilt angle and orientation—the impact of tilt angle changes on power generation is mainly affected by latitude and also by the direct sunlight ratio, although the latter has a smaller impact. Wind turbines installed at a fixed latitude have a corresponding optimal tilt angle, and fluctuations in the photovoltaic panel's tilt angle around this optimal angle have little impact on power generation. Therefore, real-time adjustment of the photovoltaic panel's tilt angle is not necessary; the optimal tilt angle for the photovoltaic panel at the given latitude can be calculated during installation and then fixed directly. However, compared to the tilt angle, the orientation of the photovoltaic panel at the same latitude has a more significant impact on power generation. Experimental studies have shown that in high-latitude regions, photovoltaic panels installed facing east or west result in a power generation loss of over 20% compared to those facing due south; while in low-latitude regions, the power generation loss is 4%. my country's coastal areas span a wide range of latitudes, including both high and low latitudes. Therefore, the adjustable photovoltaic panel orientation floating foundation for combined wind and solar power generation provided in this invention is very necessary, especially in high-latitude regions where its impact is significant.

[0082] The photovoltaic platform 6 described in this invention can be driven by the transmission gear device 11. The rolling of the ball bearings 14 between the outer slide rail 12 and the inner slide rail 13 reduces friction, thus achieving platform rotation. Meteorological information is obtained through the meteorological device installed on the meteorological platform 8, and the rotation of the photovoltaic platform 6 can be adjusted as needed based on the meteorological information. For example, the solar radiation sensor can monitor the light intensity. When the light intensity reaches a threshold, the transmission gear device 11 is activated to rotate the platform; when the light intensity is insufficient, such as on cloudy or rainy days, it is not activated. Secondly, since small fluctuations in the orientation of the photovoltaic panels have little impact on power generation, this embodiment sets three time periods for the directional rotation of the photovoltaic platform 6.

[0083] like Figure 11 The diagram shown is a schematic diagram of the sunlight stage division described in this invention. When installing the wind turbine platform, one side of the hexagon should face south or the noon direction where the sunlight is strongest. The angle of the photovoltaic panels is adjusted for three fixed time periods each day, such as 5-10 am, 10-3 pm, and 3-6 pm. The photovoltaic platform maintains a fixed orientation during each time period. The specific time period allocation is adjusted according to the seasonal changes in the length of day and night.

[0084] like Figure 12 The diagram shows the rotation effect of the photovoltaic platform during different lighting stages according to the present invention. Taking the 5-10 am lighting period as an example, the photovoltaic panels installed on the photovoltaic platform are facing the direction of sunlight. After 10 am, the transmission gear device 11 is activated, and the photovoltaic platform rotates clockwise, causing the photovoltaic panels to deflect towards the sunlight. After positioning, the 23 lock cylinder lifting column in the fixing lock 10 descends, passes through the 6 photovoltaic platform, and inserts into the lock cylinder to prevent the photovoltaic platform from rotating. It unlocks and rotates when started. The same applies from 3-8 pm.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating foundation for offshore wind and solar power generation with adjustable photovoltaic panel orientation, characterized in that, Includes the basic structure, slide rail device, photovoltaic platform, and rotation locking device; The basic structure includes a central column and six side columns; the central column and the side columns are used to provide buoyancy for the floating foundation, and the six side columns are distributed in a regular hexagon with the central column as the center; The slide rail device includes an outer slide rail and an inner slide rail; both the outer slide rail and the inner slide rail are annular structures, the outer slide rail is fixedly installed on the top of each of the side columns, and the inner slide rail is fixedly installed on the top of the central column; both the outer slide rail and the inner slide rail are equipped with a number of slide rail balls that are rolled inside; the bottom surface of the photovoltaic platform is provided with outer slide rail grooves and inner slide rail grooves at positions corresponding to the outer slide rail and the inner slide rail, respectively; The rotating locking device includes a fixed lock and a transmission gear device; the transmission gear device is installed on the top of the side column and includes a transmission gear, and the bottom surface of the photovoltaic platform is provided with a gear groove, the transmission gear meshing with the gear groove; the fixed lock includes six lock cylinders and three locking members; the three locking members are respectively installed on the photovoltaic platform, and each locking member has a lock cylinder lifting column and a transmission device for driving the lock cylinder lifting column to rise and fall, and the bottom of the locking member and the position on the photovoltaic platform corresponding to the locking member are provided with through holes through which the lock cylinder lifting column can pass; each side column has a lock cylinder that matches the lock cylinder lifting column fixedly installed on its top; The basic structure also includes a bottom ring brace, a bottom side brace, and an upper crossbeam; adjacent side columns are connected by the bottom ring brace, and the bottom and top of the side columns are connected to the central column by the bottom side brace and the upper crossbeam, respectively. A meteorological platform is mounted on the top of the locking component, and a meteorological monitoring device is mounted on the top of the meteorological platform.

2. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 1, characterized in that, It also includes a central pressure plate device, which includes a central photovoltaic platform and a support base; the bottom of the central photovoltaic platform is fixedly connected to the support base, and the support base passes through the photovoltaic platform and is fixedly installed on the upper surface of the central column.

3. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 1, characterized in that, Both the central column and the side columns are hollow columns, and both the central column and the side columns are equipped with ballast water regulation systems.

4. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 1, characterized in that, Both the outer slide rail and the inner slide rail are provided with annular grooves, and ball bearing bases corresponding one-to-one with the slide rail balls are fixedly installed in the annular grooves. The slide rail balls are rotatably mounted on the ball bearing bases.

5. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 1, characterized in that, Each of the side pillars is equipped with a transmission gear device at its top.

6. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 2, characterized in that, A buffer rubber ring is provided between the central photovoltaic platform and the support base.

7. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 2, characterized in that, The outer surface of the central photovoltaic platform can be covered with photovoltaic panels, and the angle of the photovoltaic panels is the optimal angle for receiving sunlight.

8. The offshore wind and solar combined power generation floating foundation with adjustable photovoltaic panel orientation according to claim 1, characterized in that, A horizontally installed anti-sway plate is provided in the middle of the side column, and a triangular bracket is welded and fixed between the bottom of the anti-sway plate and the side column.

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