Cross type floating fan platform and wind power system

Abstract

The invention discloses a cross-type floating fan platform and a wind power system, and the cross-type floating fan platform comprises a bottom support body which comprises at least three heaving plates which are connected with one another; the top supporting body is arranged above the bottom supporting body; the center stand column is connected between the bottom supporting body and the top supporting body, the heaving plates are arranged around the center stand column, and the top of the center stand column is configured to be connected with a wind turbine generator; one end of each side stand column is connected to the heaving plates, the other end of each side stand column is connected to the top supporting body, each heaving plate is provided with at least two side stand columns, and the included angle between each side stand column and the corresponding heaving plate is an acute angle. The water plane area can be reduced, the impact force of waves on the platform can be reduced, vibration and shaking of the platform can be reduced, better conditions are provided for stable operation of a wind turbine generator system, higher torsional rigidity is achieved, the platform has higher torsional deformation resistance, the overturning resistance of the platform can be enhanced, and the service life of the platform is prolonged. The overall stability of the platform is improved, and safety is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power systems, and more specifically, to a cross-type floating wind turbine platform and a wind power system. Background Art

[0002] Offshore wind power technology, a series of technologies that use wind turbines to convert wind energy from the ocean surface into electricity, has seen rapid development in recent years. Wind turbines are installed on floating foundations, anchored to the seabed by mooring systems. As offshore wind power development expands into deeper waters, semi-submersible floating foundations are becoming increasingly popular.

[0003] The three-column semi-submersible floating wind turbine platform is a common floating support structure in the offshore wind power sector. It consists of three large columns, a top base, and a base. The three columns are evenly spaced, connecting the top base and the base, forming a stable support structure. The wind turbine is mounted on the top base, with loads transferred to the base via the columns. The base is typically equipped with ballast tanks to adjust the platform's buoyancy and stability. It is anchored to the seabed by a mooring system to prevent displacement caused by wind, waves, and currents. The platform's buoyancy is adjusted by the ballast tanks in the base, maintaining its stability at sea. Under the influence of wind, waves, and currents, the platform relies on its own buoyancy and the constraints of the mooring system to maintain its position and attitude. The loads generated by the wind turbine during operation are transferred to the base via the columns and ultimately dispersed into the seawater by the base and ballast tanks, ensuring the overall stability of the platform.

[0004] The three columns of a three-column semi-submersible floating wind turbine platform have large diameters, resulting in a large waterplane area. This large waterplane area subjects the platform to significant wave and inertial forces under wind, wave, and current conditions, impacting its performance and stability. Under the complex wind, wave, and current conditions at sea, the platform may be subject to significant torque and prone to torsional motion. The vertical arrangement of the three columns results in low torsional stiffness, which can cause structural deformation and damage to the platform, impacting its safety and reliability.

[0005] Therefore, how to reduce the waterplane area while improving torsional rigidity is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the object of this application is to provide a cross-type floating wind turbine platform to reduce the waterplane area while improving the torsional rigidity;

[0007] Another object of the present application is to provide a wind power system having the above-mentioned cross-type floating wind turbine platform.

[0008] To achieve the above objectives, this application provides the following technical solutions:

[0009] A first aspect of the present application provides a cross-type floating wind turbine platform, comprising:

[0010] a bottom support body comprising at least three interconnected heave plates;

[0011] A top support body, arranged above the bottom support body;

[0012] a central column connected between the bottom support body and the top support body, and each of the heave plates is arranged around the central column, and the top of the central column is configured to connect to a wind turbine;

[0013] One end of the side column is connected to the heaving plate, and the other end is connected to the top support body. Each heaving plate is provided with at least two side columns, and the angle between the side column and the heaving plate is an acute angle.

[0014] In a possible implementation, the top support body includes top support portions arranged around the central column, the top support portions are equal in number to the heave plates and are staggered along the extension direction of the central column, and one end of the side column is connected to the heave plate, and the other end is connected to the top support portion;

[0015] Each of the heaving plates is connected to two of the side columns, and each of the top supporting parts is connected to two of the side columns.

[0016] In a possible implementation, the two side columns connected to the heave plate are respectively connected to the two top support parts;

[0017] The two side columns connected to the top supporting portion are respectively connected to the two heave plates.

[0018] In a possible implementation, the axes of the two side columns connected to the heave plate are located on a first plane, the projection of the axis of the central column on the first plane is a first projection, and the axes of the two side columns connected to the heave plate are symmetrical along the first projection;

[0019] The axes of the two side columns connected to the top support part are located on a second plane, the projection of the axis of the central column on the second plane is a second projection, and the axes of the two side columns connected to the top support part are symmetrical along the second projection.

[0020] In a possible implementation, the included angle between the two side columns connected to the heave plate is a, and the included angle between the two side columns connected to the top support portion is b, where a is smaller than b.

[0021] In a possible implementation, a projection of the top supporting portion on the plane where the top of the heave plate is located is a projection of the top supporting portion;

[0022] The top supporting portion projections corresponding to each of the top supporting portions are respectively located between two of the heave plates.

[0023] In a possible implementation, the top supporting portion projections corresponding to the top supporting portions are respectively located in the middle of two heave plates.

[0024] In a possible implementation, the heave plates are connected via a bottom connector, and the top support portions are connected via a top connector;

[0025] One end of the central column is connected to the bottom connector, and the other end is connected to the top connector, and the central column is perpendicular to the heave plate.

[0026] In a possible implementation, the heave plate is a box structure, and the tube cavity of the side column is connected to the cavity of the heave plate.

[0027] The cross-shaped floating wind turbine platform provided in this application features at least two side columns on each heave plate, ensuring that the platform has no fewer than six side columns. This arrangement allows the diameter of the side columns to be significantly smaller than that of the columns of a traditional three-column semi-submersible floating wind turbine platform, while still meeting strength requirements. The smaller diameter side columns reduce the platform's projected area in the water, effectively reducing the waterplane area and the impact of waves on the platform. Furthermore, the thinner side columns allow water to flow more smoothly through the platform, reducing the generation of vortices and turbulence, thereby reducing wave resistance and improving the platform's performance in wave environments. This helps reduce platform vibration and sway, ensuring better conditions for the stable operation of the wind turbine. The application also features at least two side columns on each heave plate, which more evenly distributes the various external forces acting on the cross-shaped floating wind turbine platform, such as wave and wind forces. The side columns are inclined relative to the heave plates, forming an inclined support structure. This structure offers greater torsional rigidity, making the platform more resistant to torsional deformation and capsizing, enhancing its overall stability and safety in adverse sea conditions. For example, in strong winds, multiple inclined side columns can distribute wind and wave forces from multiple angles, preventing the platform from tilting or being damaged due to uneven localized forces.

[0028] A second aspect of the present application provides a wind power system, comprising:

[0029] A cross-type floating wind turbine platform, which is a cross-type floating wind turbine platform as described in any one of the above items;

[0030] A wind turbine generator set is fixed to the top of the central column;

[0031] A mooring system is connected to the heave plate.

[0032] The wind power system provided in the present application has all the technical effects of the above-mentioned cross-type floating wind turbine platform because it has the above-mentioned cross-type floating wind turbine platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic structural diagram of a wind power system disclosed in an embodiment of the present application;

[0035] Figure 2 This is a schematic structural diagram of a cross-type floating wind turbine platform disclosed in an embodiment of the present application;

[0036] Figure 3 This is a front view of the cross-type floating wind turbine platform disclosed in an embodiment of the present application;

[0037] Figure 4 A side view of a cross-type floating wind turbine platform disclosed in an embodiment of the present application;

[0038] Figure 5 A top view of the cross-type floating wind turbine platform disclosed in an embodiment of the present application;

[0039] Figure 6 This is a schematic structural diagram of the heave plate disclosed in the embodiments of this application;

[0040] Figure 7 This is a schematic structural diagram of the top support body disclosed in the embodiment of this application;

[0041] Figure 8 This is a schematic structural diagram of the side columns disclosed in the embodiments of this application.

[0042] The meanings of the reference numerals in the figures are as follows:

[0043] 100-wind turbine; 110-nacelle; 120-hub; 130-blade; 140-tower;

[0044] 200 - Cross-type floating wind turbine platform; 210 - Bottom support body; 211 - Heave plate; 2111 - Heave plate connection port; 212 - Bottom connector; 220 - Side column; 221 - First docking end face; 222 - Second docking end face; 230 - Top support body; 231 - Top support portion; 2311 - Top connection port; 232 - Top connector; 240 - Center column;

[0045] 300-Mooring system. DETAILED DESCRIPTION

[0046] The embodiment of the present application discloses a cross-type floating wind turbine platform to reduce the waterplane area while improving the torsional rigidity;

[0047] The embodiment of the present application also discloses a wind power system having the above-mentioned cross-type floating wind turbine platform.

[0048] The following describes the embodiments with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the content of the application described in the claims. Furthermore, the entire contents of the configurations represented by the following embodiments are not limited to those necessary for the solution of the application described in the claims. It should be noted that, for ease of description, only the portions related to the relevant application are shown in the accompanying drawings. The embodiments and features in the embodiments of this application may be combined with each other unless there is a conflict.

[0049] like Figure 1-Figure 5 As shown, the embodiment of the present application discloses a cross-type floating wind turbine platform 200 , which includes a bottom support body 210 , a top support body 230 , a central column 240 and side columns 220 .

[0050] The bottom support body 210 includes at least three interconnected heave plates 211, forming a cohesive unit and maintaining sufficient rigidity. The top support body 230 is positioned above the bottom support body 210. The top support body 230 and the bottom support body 210 can be arranged parallel to each other or at an angle as needed.

[0051] Those skilled in the art will appreciate that the distance between the top support body 230 and the bottom support body 210 is related to the lengths of the center column 240 and the side columns 220. Since both the center column 240 and the side columns 220 are tank structures, the lengths of the center column 240 and the side columns 220 are related to the buoyancy generated by the cross-type floating wind turbine platform 200. Therefore, the distance between the top support body 230 and the bottom support body 210 is related to the buoyancy generated by the cross-type floating wind turbine platform 200. Those skilled in the art can select the distance between the top support body 230 and the bottom support body 210 based on the buoyancy requirements of the cross-type floating wind turbine platform 200.

[0052] The central column 240 is disposed between the bottom support body 210 and the top support body 230 , and is connected to the bottom support body 210 and the top support body 230 respectively, connecting the bottom support body 210 and the top support body 230 into a whole, thereby improving the rigidity of the cross-type floating wind turbine platform 200 .

[0053] Each heave plate 211 is arranged around the central column 240, and the top of the central column 240 is configured to connect to the wind turbine 100 to ensure that the center of gravity of the cross-type floating wind turbine platform 200 remains on the central column 240, preventing the cross-type floating wind turbine platform 200 from twisting after the wind turbine 100 is installed.

[0054] One end of the side column 220 is connected to the vertical swing plate 211, and the other end is connected to the top support body 230. Each vertical swing plate 211 is provided with at least two side columns 220, and the angle between the side column 220 and the vertical swing plate 211 is an acute angle, that is, the side column 220 and the upper surface of the vertical swing plate 211 are not perpendicular, but inclined. It should be noted that the angle between the side column 220 and the vertical swing plate 211 is the minimum angle between the side column 220 and the vertical swing plate 211. When the cross-type floating wind turbine platform 200 is used in calm water, the vertical swing plate 211, the side columns 220, and part of the length of the center column 240 are submerged in water, and the vertical swing plate 211 remains parallel to the horizontal plane, the center column 240 remains perpendicular to the horizontal plane, and the side columns 220 maintain an acute angle with the horizontal plane. Specifically, the included angle between the side column 220 and the heave plate 211 can be designed to be an acute angle greater than 45°.

[0055] The inclined side columns 220 change the force distribution of the entire cross-type floating wind turbine platform 200, and can better resist the overturning moment generated by external forces. When the cross-type floating wind turbine platform 200 is subjected to horizontal external forces such as wind, waves, and ocean currents, the vertically extending column structure is prone to a greater overturning tendency due to the horizontal force. In the embodiment, the inclined side columns 220 can convert part of the horizontal force into vertical force through their own inclination angle, and transmit it to the vertical swing plate 211 and the top support body 230, so that the horizontal force borne by the cross-type floating wind turbine platform 200 is smaller, greatly enhancing the anti-overturning stability of the entire structure. For example, in strong typhoon weather, the inclined side columns 220 can effectively disperse the huge horizontal force brought by the wind and prevent the entire platform from overturning.

[0056] The inclined side columns 220 ensure more balanced stress distribution across the structure. In marine environments, the cross-type floating wind turbine platform 200 is subject to complex and variable external forces. When the vertical columns are subjected to forces in certain directions, stress concentration within the structure becomes more pronounced. In this embodiment, the inclined side columns 220 distribute external forces in multiple directions, preventing localized excessive stress and achieving more uniform stress distribution across the structure. This reduces the risk of damage due to stress concentration and improves the overall load-bearing capacity and durability of the structure.

[0057] The inclined side columns 220 also increase the structure's spatial rigidity. Compared to vertical columns, the tilted design of the side columns 220 creates a more stable triangular support relationship in both the horizontal and vertical directions. This triangular structure effectively improves the structure's ability to resist deformation. When subjected to external forces, the platform's overall deformation is reduced, maintaining better shape stability, providing a more stable support environment for the equipment and facilities on the platform, and promoting normal operation of the equipment.

[0058] The design of the inclined side columns 220 gives the platform a more streamlined appearance in the water. Compared to vertical columns, the inclined design allows water to flow more smoothly through the platform, reducing the impact and resistance of the water on the platform. This not only helps to reduce the platform's drift speed in the ocean current, but also reduces the vibration and noise caused by the impact of the water flow, thereby increasing the service life of the equipment. For example, in sea areas with faster currents, the platform with a smaller diameter and inclined side columns 220 is significantly less subject to water resistance than the vertical, larger diameter columns used in the prior art, and can be more stably maintained in the predetermined position.

[0059] In a wave environment, the inclined side columns 220 can alter the interaction between waves and the platform. The tilted structure scatters or reflects some of the wave energy upon contact with the platform, reducing the lifting and pressing forces exerted by the waves on the platform. This characteristic helps reduce the vertical motion of the platform in waves, known as heave, improving its stability in waves, creating a more stable environment for equipment and operations, and minimizing wave-induced damage to equipment and operational difficulties for personnel.

[0060] In existing platforms with vertically arranged columns, due to their relatively regular structure, stress concentration is easily generated at the connections between the columns and the top and bottom supports when subjected to complex external forces. However, the inclined side columns 220 ensure a more uniform stress distribution when the platform structure is subjected to external forces. Specifically, by altering the force transmission path, the inclined side columns 220 distribute stress over a wider structural area, reducing local stress peaks, minimizing the likelihood of fatigue cracks and damage due to stress concentration, and improving the overall strength and reliability of the platform structure.

[0061] Furthermore, the inclined side columns 220 increase the redundancy of the platform structure. If some side columns 220 are damaged or fail, the inclined side columns 220, through their inherent structural characteristics, can redistribute the load originally borne by the damaged side columns to other side columns, ensuring that the platform maintains a certain level of load-bearing capacity and stability. This prevents the entire platform from losing functionality due to damage to individual side columns, thus providing additional protection for the platform's safe operation. Furthermore, the presence of at least two side columns 220 on a single heave plate 211 also ensures that if one side column 220 is damaged or deformed, the load borne by the damaged side column is redistributed to the remaining side columns, ensuring that the platform maintains a certain level of load-bearing capacity and stability.

[0062] In summary, the cross-type floating wind turbine platform 200 disclosed in the embodiment of the present application is equipped with at least two side columns 220 on each heave plate 211, resulting in a cross-type floating wind turbine platform with no fewer than six side columns 220. This arrangement, while meeting strength requirements, allows the diameter of the side columns 220 to be significantly smaller than the column diameter of a conventional three-column semi-submersible floating wind turbine platform. The smaller diameter of the side columns 220 can reduce the platform's projected area in the water, that is, reduce the waterplane area, thereby reducing the impact of waves on the platform. Furthermore, the smaller waterplane area of ​​the side columns 220 facilitates the design of the ballast compartments, reduces the platform's deadweight, and reduces material and maintenance costs. Furthermore, the thinner side columns 220 enable water to flow more smoothly through the platform, reducing the generation of vortices and turbulence, thereby reducing wave resistance and improving the platform's performance in wave environments. This helps reduce platform vibration and shaking, providing better conditions for the stable operation of wind turbines.

[0063] The present application provides at least two side columns 220 on each swing plate 211, which can more evenly disperse the various external forces acting on the cross-type floating wind turbine platform 200, such as wave forces and wind forces. The side columns 220 are inclined relative to the swing plate 211, forming an inclined support structure. This structure has greater torsional rigidity, making the platform more resistant to torsional deformation, and can also enhance the platform's ability to resist overturning, improve the platform's overall stability, and greatly improve the platform's safety in harsh sea conditions. For example, in strong winds, multiple inclined side columns 220 can share wind and wave forces from multiple angles, preventing the platform from tilting or being damaged due to uneven local forces.

[0064] In a specific embodiment of the present application, the top support body 230 includes a top support portion 231 arranged around a central column 240. The number of top support portions 231 is the same as that of vertical swing plates 211, and they are staggered with each other along the extension direction of the central column 240. One end of the side column 220 is connected to the vertical swing plate 211, and the other end is connected to the top support portion 231. Two side columns 220 are connected to each vertical swing plate 211, and two side columns 220 are connected to each top support portion 231.

[0065] In this embodiment, the top support portions 231 connecting the upper ends of the side columns 220 and the heave plates 211 connecting the lower ends of the side columns 220 are staggered along the extension direction of the center column 240. For example, if the extension direction of the center column 240 is the vertical direction, the top support portions 231 are staggered along the vertical direction from the heave plates 211, meaning that they are not arranged vertically opposite each other. This allows the side columns 220 to be interwoven with the bottom support body 210 and the top support body 230, forming a stable, integrated platform structure.

[0066] The heave plates 211 installed on the bottom support 210 help suppress the platform's heave motion. The resistance exerted by the heave plates 211 in the water effectively slows the platform's up-and-down motion. The connection between the side columns 220 and the heave plates 211 further enhances the ability to control heave motion. The coordinated operation of multiple side columns 220 and the heave plates 211 allows for more precise adjustment of the platform's heave response to wave action, minimizing the adverse effects of excessive heave on wind turbine operation and ensuring stable wind turbine operation.

[0067] This unique structural layout not only effectively controls heave motion but also suppresses other directional movements, such as roll, pitch, and yaw. The connections between the side columns 220 and various components form a complex support system, counterbalancing forces in various directions. This allows the platform to maintain a relatively stable posture in complex sea conditions, reducing unnecessary sway and improving its kinematic performance.

[0068] Furthermore, the two side columns 220 connected to the heave plate 211 are respectively connected to the two top support portions 231; correspondingly, the two side columns 220 connected to the top support portions 231 are respectively connected to the two heave plates 211. This arrangement allows the two side columns 220 connected to the heave plate 211 to form an angled structure with their openings facing upward, while the two side columns 220 connected to the top support portions 231 to form an angled structure with their openings facing downward. This allows the side columns 220 to form multiple triangular support systems with their apex angles facing upward, or multiple triangular support systems with their apex angles facing downward, further improving the support stiffness and torsional resistance of the cross-type floating wind turbine platform 200. The impact force acting on the vertical swing plate 211 can be transmitted to the two top support parts 231 respectively through the two side columns 220 connected to the vertical swing plate 211; the impact force acting on the top support part 231 can be transmitted to the two vertical swing plates 211 respectively through the two side columns 220 connected to the top support part 231, so as to reduce the negative effects caused by the impact force.

[0069] In a specific embodiment of the present application, the axes of the two side columns 220 connected to the heave plate 211 are located on a first plane. For ease of understanding, the projection of the axis of the central column 240 on the first plane is defined as a first projection, and the axes of the two side columns 220 connected to the heave plate 211 are symmetrical along the first projection.

[0070] The axes of the two side columns 220 connected to the top support portion 231 are located on the second plane. For ease of understanding, the projection of the axis of the central column 240 on the second plane is defined as the second projection, and the axes of the two side columns 220 connected to the top support portion 231 are symmetrical along the second projection.

[0071] Such an arrangement ensures that the two side columns 220 connected to the heave plate 211 and the two side columns 220 connected to the top support portion 231 have a symmetrical structure, so that the entire cross-type floating wind turbine platform remains stable when in water, and the center of gravity of the platform remains on the axis of the central column 240, further reducing the probability of capsizing.

[0072] In a specific embodiment of the present application, the included angle between the two side columns 220 connected to the heave plate 211 is a, and the included angle between the two side columns 220 connected to the top support portion 231 is b, where a is smaller than b. The smaller included angle a between the side columns 220 connected to the heave plate 211 means that the structure above the heave plate 211 is relatively compact. The larger included angle b between the side columns 220 connected to the top support portion 231 provides a more open space below the top support portion 231.

[0073] This allows for a larger space between adjacent heave plates 211, while keeping the space above the heave plates 211 relatively compact, thus facilitating smooth water flow. Under the influence of ocean currents, this structure can reduce turbulence around the heave plates 211, lowering resistance to the platform and improving its stability in the current.

[0074] In a specific embodiment of the present application, for ease of understanding, the projection of the top support portion 231 on the plane where the top of the heave plate 211 is located is defined as the top support portion projection. The top support portion projection corresponding to each top support portion 231 is located between the two heave plates 211. Figure 5 As shown, the three heave plates 211 serve as the three vertices of an equilateral triangle, and the three top support portions 231 are respectively located on the sides of the equilateral triangle. This arrangement makes the distance between the three heave plates 211 and the central column 240 greater than the distance between the three top support portions 231 and the central column 240.

[0075] Preferably, the top support portion projections corresponding to the top support portions 231 may be located in the middle of the two heave plates 211 .

[0076] The primary function of heave plates 211 is to suppress the heave (up and down) motion of the platform under the influence of waves. The greater distance between heave plates 211 and central column 240 means they are located relatively outboard. When the platform is subjected to vertical forces induced by waves, heave plates 211 utilize their larger lever arm to generate a greater moment to resist heave, thereby more effectively suppressing the platform's heave amplitude. This allows the platform to maintain a more stable up and down motion in wave conditions and reduces interference with equipment and operations on the platform caused by excessive heave.

[0077] This layout helps adjust the platform's center of gravity and moment of inertia. Heave plates 211 are positioned away from central columns 240. When the platform is subject to horizontal forces such as wind and waves and threatens to tip over, they provide a greater stabilizing torque to resist tipping. Because the mass of heave plates 211 is distributed further outward, the platform's moment of inertia about the horizontal axis is increased, forcing the platform to overcome greater inertial forces during a tipping process. This improves the platform's overall anti-tip stability and ensures safe operation in adverse sea conditions.

[0078] Since each heave plate 211 is located at the vertex of an equilateral triangle, and the three top support portions 231 are respectively located on the sides of the equilateral triangle, when waves propagate to the cross-type floating wind turbine platform 200, there are two situations depending on the propagation direction of the waves: the first is that one of the heave plates 211 contacts the wave first; the second is that two heave plates 211 and the top support portion 231 between the two heave plates 211 contact the wave at the same time.

[0079] The first scenario is more likely to occur because the second scenario only occurs when the wave propagation direction is perpendicular to one of the sides of the equilateral triangle. The first scenario will occur when the wave propagates in other directions. Therefore, the heave plate 211 is likely to come into contact with the wave first. Its larger radius can partially reflect, scatter, or absorb the wave in advance, reducing the wave energy reaching the main part of the platform, reducing the impact and lifting force of the wave on the top support and the entire platform, and further improving the platform's stability in waves.

[0080] In one embodiment of the present application, each heave plate 211 is connected by a bottom connector 212, and each top support portion 231 is connected by a top connector 232. One end of a central column 240 is connected to the bottom connector 212, and the other end is connected to the top connector 232. The central column 240 is perpendicular to the heave plate 211.

[0081] The central column 240 connects the bottom connector 212 and the top connector 232, providing a stable core support axis for the platform. On this basis, the cross-connection between the side columns 220 and the heave plate 211 and the top support part 231 further enhances the overall strength and stability of the structure, enabling it to better resist various external forces in the marine environment, such as the huge forces generated by wind, waves, currents, etc., and reduce the risk of deformation or damage to the platform.

[0082] In a specific embodiment of the present application, the vertical swing plate 211 is a box structure, and the tube cavity of the side column 220 is connected to the cavity of the vertical swing plate 211. Figure 5-Figure 8 As shown, a vertical swing plate connecting port 2111 is provided on the vertical swing plate 211, and a top connecting port 2311 is provided on the top support portion 231. One end of the side column 220 is welded to the vertical swing plate connecting port 2111, and the other end is welded to the top connecting port 2311 to achieve connection with the vertical swing plate 211 and the top support portion 231.

[0083] Since the side column 220 is not arranged at an angle and forms a certain angle with the vertical swing plate 211 and the top support portion 231, the end of the side column 220 needs to be cut into an elliptical docking end face (the docking end faces at both ends of the side column 220 are respectively the first docking end face 221 and the second docking end face 222). The docking cross-section is parallel to the vertical swing plate 211 and the top support portion 231, and forms a corresponding angle with the axis of the side column 220.

[0084] The elliptical butt joint surface provides a larger contact area with the top support portion 231 and the heave plate 211. This larger contact area provides a wider area for welding, resulting in a more even distribution of weld points and increased weld length, thereby significantly enhancing the weld strength between the side columns 220 and the top support portion 231 and heave plate 211. When the platform is subjected to complex external forces, the more robust weld connection effectively prevents cracking and desoldering in the welds between the side columns 220 and other components, ensuring the integrity and stability of the entire platform structure.

[0085] The elliptical butt joint surface helps optimize stress distribution at the weld site. When the platform is subjected to external forces, the stress is transferred to the weld site through the side columns 220. The elliptical butt joint surface can more evenly distribute stress to surrounding components, preventing stress from concentrating at a single point or area. For example, under the influence of wave and wind forces, the elliptical butt joint surface can disperse the forces borne by the side columns 220 over a larger area of ​​the top support portion 231 and the heave plate 211, reducing the risk of structural damage caused by excessive local stress and extending the service life of the platform.

[0086] The wall thickness of the side column 220 along its axial direction can be equal or designed to be unequal. For example, the wall thickness of the side column 220 gradually increases from the middle to the two ends. This embodiment does not limit the wall thickness of the side column 220, and those skilled in the art can design it based on their needs.

[0087] The cross-type floating wind turbine platform 200 disclosed in the embodiment of the present application also has the advantage of modularity compared to traditional platforms.

[0088] Traditional three-column semi-submersible platforms rely on three large-diameter columns, resulting in a bulky overall structure that is difficult to disassemble and prefabricate. Transport requires oversized equipment, resulting in low efficiency and high costs. The cross-type floating wind turbine platform 200 disclosed in this application, however, achieves optimization through modular design, offering the following advantages:

[0089] (1) The components are lightweight and suitable for prefabrication;

[0090] The platform's core components (heave plate 211, side columns 220, top support 231, etc.) are smaller in size. The diameter of the side columns 220 is much smaller than that of traditional columns, significantly reducing the weight of each component. For example, due to their large number (≥6) and thin diameter, the side columns 220 can be prefabricated individually in the factory. Standardized modules such as the heave plate 211 and top support 231 can also be mass-produced.

[0091] (2) Improved transportation convenience;

[0092] Lightweight components do not require oversized transport vehicles and can be transported in batches to assembly sites (such as ports) via conventional ships or trailers, reducing transportation costs and route restrictions.

[0093] (3) Efficiency of on-site assembly;

[0094] The connection relationship between modules is clear (such as the cross connection between the side columns 220 and the heave plate 211 and the top support part 231, and the central column 240 connecting the bottom connector 212 and the top connector 232), and only welding connections need to be completed on the dock site.

[0095] like Figure 1 As shown, the present embodiment also discloses a wind power system, which includes a cross-type floating wind turbine platform 200, a wind turbine generator 100, and a mooring system 300. The cross-type floating wind turbine platform 200 is the cross-type floating wind turbine platform 200 disclosed in the above embodiment. The wind turbine generator 100 is fixed to the top of the central column 240, and the mooring system 300 is connected to the heave plate 211. The wind turbine generator 100 generally includes a tower 140, a nacelle 110, a hub 130, and blades 120. The connection relationship between the various components of the wind turbine generator 100 is the same as that in the prior art and will not be repeated here.

[0096] The wind power system disclosed in the embodiment of the present application has all the technical effects of the cross-type floating wind turbine platform 200 because it has the cross-type floating wind turbine platform 200 .

[0097] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0098] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0099] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0100] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A cross-type floating wind turbine platform, characterized in that: include: A bottom support body (210) comprising at least three interconnected heave plates (211); A top support body (230) is disposed above the bottom support body (210); a central column (240) connected between the bottom support body (210) and the top support body (230), and each of the heave plates (211) is arranged around the central column (240), and the top of the central column (240) is configured to be connected to a wind turbine (100); A side column (220) has one end connected to the heaving plate (211) and the other end connected to the top support body (230), and each heaving plate (211) is provided with at least two side columns (220), and the angle between the side columns (220) and the heaving plate (211) is an acute angle.

2. The cross-type floating wind turbine platform according to claim 1, characterized in that: The top support body (230) includes a top support portion (231) arranged around the central column (240); the top support portions (231) are equal in number to the heave plates (211) and are staggered along the extension direction of the central column (240); one end of the side column (220) is connected to the heave plate (211), and the other end is connected to the top support portion (231); Each of the heave plates (211) is connected to two of the side columns (220), and each of the top support portions (231) is connected to two of the side columns (220).

3. The cross-type floating wind turbine platform according to claim 2, characterized in that: The two side columns (220) connected to the heave plate (211) are respectively connected to the two top support parts (231); The two side columns (220) connected to the top support portion (231) are respectively connected to the two heave plates (211).

4. The cross-type floating wind turbine platform according to claim 3, characterized in that: The axes of the two side columns (220) connected to the heave plate (211) are located on a first plane, the projection of the axis of the central column (240) on the first plane is a first projection, and the axes of the two side columns (220) connected to the heave plate (211) are symmetrical along the first projection; The axes of the two side columns (220) connected to the top support portion (231) are located on a second plane, the projection of the axis of the central column (240) on the second plane is a second projection, and the axes of the two side columns (220) connected to the top support portion (231) are symmetrical along the second projection.

5. The cross-type floating wind turbine platform according to claim 3, characterized in that: The included angle between the two side columns (220) connected to the heave plate (211) is a, and the included angle between the two side columns (220) connected to the top support portion (231) is b, where a is smaller than b.

6. The cross-type floating wind turbine platform according to claim 2, characterized in that: The projection of the top support portion (231) on the plane where the top of the heave plate (211) is located is the top support portion projection; The top support portion projections corresponding to each of the top support portions (231) are respectively located between the two heave plates (211).

7. The cross-type floating wind turbine platform according to claim 6, characterized in that: The top support portion projections corresponding to each of the top support portions (231) are respectively located in the middle of the two heave plates (211).

8. The cross-type floating wind turbine platform according to claim 2, characterized in that: The heave plates (211) are connected via a bottom connector (212), and the top support portions (231) are connected via a top connector (232); One end of the central column (240) is connected to the bottom connector (212), and the other end is connected to the top connector (232), and the central column (240) is perpendicular to the heave plate (211).

9. The cross-type floating wind turbine platform according to any one of claims 1 to 8, characterized in that: The heave plate (211) is a box structure, and the tube cavity of the side column (220) is connected to the cavity of the heave plate (211).

10. A wind power system, characterized in that: include: A cross-type floating wind turbine platform (200) is a cross-type floating wind turbine platform (200) according to any one of claims 1 to 9; A wind turbine generator set (100) is fixed to the top of the central column (240); A mooring system (300) is connected to the heave plate (211).

Images