Semi-submersible wind power platform with concave heave plate structure

Abstract

The invention provides a semi-submersible wind power platform with a concave heave plate structure. The semi-submersible wind power platform comprises a plurality of buoyancy units, a plurality of supporting mechanisms, an anchor chain and a fan. The multiple buoyancy units and the multiple sets of supporting mechanisms are sequentially and alternately arranged to form the annular space frame structure, and the whole platform has good stability and rigidity. In each buoyancy unit, a heaving plate is installed at the bottom of a buoy, meanwhile, the scheme innovatively provides an inwards-sunken cavity formed in the surface of the heaving plate, a local high-pressure area and a stable backflow vortex field are formed in the structure in an induced mode through the acceleration, compression and expansion effects of fluid in the cavity, radiation damping and heaving additional mass are remarkably enhanced, and the effect of the heaving effect is achieved. A hydrodynamic regulation and control mechanism that flow is controlled through shapes and energy is efficiently consumed is achieved, the motion inhibition capacity is effectively improved, and the overall projection area of the heaving plate does not need to be enlarged. Through the arrangement, the semi-submersible floating platform effectively controls the construction cost on the premise of ensuring the structural stability.

Description

Technical Field

[0001] This invention belongs to the field of offshore renewable energy equipment technology, and specifically relates to a semi-submersible wind power platform with a concave heave plate structure. Background Technology

[0002] With the continued growth of global energy demand and the increasing prominence of environmental issues, the global energy structure is gradually shifting towards green and pollution-free clean energy. Against this backdrop, wind energy, as a clean and renewable energy source, has gradually attracted widespread attention. In recent years, the development space for onshore wind farms has gradually become saturated, making the development of near-shore and offshore wind energy resources a new research hotspot. Semi-submersible wind power platforms, with their excellent stability and adaptability to deep-water environments, have become one of the important development directions in the current offshore wind power field.

[0003] Traditional semi-submersible wind turbine platforms typically consist of pontoons, columns, and heave plates, relying primarily on the heave plates for damping and stability to resist wave-induced platform movement. However, to meet stability requirements, traditional semi-submersible structures often require large-sized heave plates and thick-walled structures, significantly increasing construction costs. Therefore, improving hydrodynamic performance while maintaining construction costs has become a pressing technical challenge for the industry.

[0004] Although the overall structures of semi-submersible platforms are largely similar, there are differences in the details. Each structure uses pontoons as the main component, connected by cross braces and diagonal braces to create structural rigidity. To improve hydrodynamic stability, most patents also incorporate heave plates to increase damping in the heave direction. Injecting seawater or other materials into the heave plates lowers the overall center of gravity, and the heave plates also provide significant roll and pitch damping, thereby increasing the natural periods of roll and pitch and avoiding the natural periods of waves, ensuring that the platform's hydrodynamic characteristics meet design requirements.

[0005] However, to ensure the wind and wave resistance and stability requirements of semi-submersible wind power platforms, current domestic patents and technologies rarely consider cost control, resulting in high production, transportation, and construction costs. Therefore, for semi-submersible platforms, stability and cost requirements represent a significant contradiction. Summary of the Invention

[0006] The purpose of this invention is to provide a semi-submersible wind power platform with a concave heave plate structure, which effectively controls construction costs while ensuring structural stability.

[0007] To solve the above technical problems, the present invention provides a semi-submersible wind power platform with a concave heave plate structure, including multiple buoyancy units, multiple sets of support mechanisms, anchor chains and wind turbines. Adjacent buoyancy units are connected by a set of support mechanisms, so that the multiple buoyancy units are arranged in a ring structure through the support mechanisms.

[0008] Each of the buoyancy units includes a float and a heave plate. The heave plate is disposed at the bottom of the float, and the upper and / or lower surfaces of the heave plate are provided with inwardly recessed cavities.

[0009] Each set of support mechanisms includes a lateral support and a bottom bypass. The floats of two adjacent buoyancy units are connected by a lateral support, and the heave plates of two adjacent buoyancy units are connected by a bottom bypass.

[0010] The anchor chain is used to connect the heave plate and the seabed, and the wind turbine is installed on the buoy of any one of the buoyancy units.

[0011] Optionally, in the above-mentioned semi-submersible wind power platform, a first cavity is provided on the upper surface of the heave plate, and a second cavity is provided on the lower surface of the heave plate, with the first cavity forming a circle around the edge of the pontoon.

[0012] Optionally, in the above-mentioned semi-submersible wind power platform, the first cavity and the second cavity are both centrally symmetrically arranged.

[0013] Optionally, in the above-mentioned semi-submersible wind power platform, the outer contour of the heave plate is cylindrical.

[0014] Optionally, in the above-mentioned semi-submersible wind power platform, the cavity edge of the heave plate is a continuous smooth curved surface.

[0015] Optionally, in the above-mentioned semi-submersible wind power platform, the heave plates in each of the buoyancy units are configured as multiple layers, and the adjacent layers of heave plates are connected by supports.

[0016] Optionally, in the above-mentioned semi-submersible wind power platform, the cavity arrangement of each layer of the heave plate is exactly the same, or the cavity orientation of each layer of the heave plate is arranged alternately.

[0017] Optionally, in the aforementioned semi-submersible wind power platform, multiple buoyancy units are arranged in a centrally symmetrical manner.

[0018] Optionally, in the aforementioned semi-submersible wind power platform, the heave plates and pontoons in each of the buoyancy units are connected by welding or detachable connection.

[0019] Optionally, in the above-mentioned semi-submersible wind power platform, the width of the bottom bypass is greater than the width of the lateral support.

[0020] This invention provides a semi-submersible wind power platform with a concave heave plate structure, the advantages of which are:

[0021] By employing multiple buoyancy units and supporting mechanisms arranged alternately to form a ring-shaped spatial frame structure, the entire platform exhibits excellent stability and rigidity. Within each buoyancy unit, a heave plate is installed at the bottom of the pontoon. Furthermore, this design innovatively incorporates an inwardly recessed cavity on the surface of the heave plate. Utilizing the acceleration, compression, and expansion effects of the fluid within this cavity, a local high-pressure zone and a stable reflux vortex field are induced within the structure. This significantly enhances radiation damping and heave-added mass, achieving a hydrodynamic control mechanism of "shape-based flow control and efficient energy dissipation," effectively improving motion suppression capabilities without increasing the overall projected area of ​​the heave plate.

[0022] Through the above-mentioned design, the semi-submersible floating platform effectively controls construction costs while ensuring structural stability. Attached Figure Description

[0023] 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 only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figures 1-2 This is a structural schematic diagram of a semi-submersible wind power platform with a concave heave plate structure provided in an embodiment of the present invention;

[0025] Figure 3 for Figure 1 A magnified view of a section at point A (anchor chain not shown);

[0026] Figure 4 for Figure 3 Cross-sectional view in the BB direction;

[0027] Figure 5 This is a top view of a semi-submersible wind power platform with a concave heave plate structure provided in Embodiment 1 of the present invention.

[0028] Figure 6 A bottom view of a semi-submersible wind power platform with a concave heave plate structure provided in Embodiment 1 of the present invention;

[0029] Figure 7 This is a bottom view of a semi-submersible wind power platform with a concave heave plate structure provided in Embodiment 2 of the present invention;

[0030] Figure 8This is a top view of a semi-submersible wind power platform with a concave heave plate structure provided in Embodiment 3 of the present invention.

[0031] In the image above:

[0032] 100-Float;

[0033] 200 - Heave plate; 210 - First cavity; 220 - Second cavity;

[0034] 310 - Horizontal support; 320 - Bottom bypass;

[0035] 400-anchor chain;

[0036] 500-fan. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The core of this invention is to provide a semi-submersible wind power platform with a concave heave plate structure, which effectively controls construction costs while ensuring structural stability.

[0039] To enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] To address the issues of large amplitude and high dynamic load of heave, roll and pitch motions of existing floating wind power platforms under complex sea conditions, which leads to increased fatigue damage, reduced power generation efficiency and increased operation and maintenance risks, traditional heave plates often rely on increasing the projected area to improve damping performance, which can easily lead to engineering bottlenecks such as increased structural weight, increased manufacturing costs and increased installation difficulty.

[0041] Therefore, the present invention provides a semi-submersible wind power platform with a concave heave plate structure, please refer to... Figures 1-8 Specifically, it includes: multiple buoyancy units, multiple sets of support mechanisms, anchor chains 400, and wind turbines 500. Adjacent buoyancy units are connected by a set of support mechanisms, so that multiple buoyancy units are arranged in a ring structure through the support mechanisms.

[0042] Each buoyancy unit includes a float 100 and a heave plate 200. The heave plate 200 is located at the bottom of the float 100. The upper and / or lower surfaces of the heave plate 200 are provided with inwardly recessed cavities that can generate fluid vortices.

[0043] Each set of support mechanisms includes a lateral support 310 and a bottom bypass 320. The connection between the floats 100, the heave plates 200, the lateral support 310 and the bottom bypass 320 is as follows: the floats 100 of two adjacent buoyancy units are connected by a lateral support 310, and the heave plates 200 of two adjacent buoyancy units are connected by a bottom bypass 320.

[0044] Among them, the float 100 is one of the important sources of buoyancy for the semi-submersible floating platform. Its internal structure is hollow, which can displace a certain volume of seawater, thereby generating upward buoyancy to support the weight of the entire platform and enable the platform to float on the sea surface.

[0045] When the heave plate 200 is subjected to wave action and undergoes heave motion, it cuts through the seawater, generating significant water resistance, increasing heave damping, and providing sufficient vertical stability. This effectively suppresses the heave amplitude of the platform and reduces its vertical swaying in the waves. Simultaneously, it influences the surrounding flow field to a certain extent, making the wave force on the platform more evenly distributed, thereby indirectly reducing the platform's pitch and roll amplitudes and improving its stability in the waves. Furthermore, the inwardly recessed cavities on the surface of the heave plate 200 allow fluid to enter, generating an accelerated contraction-expansion effect. This induces a local high-pressure zone within the heave plate 200 and stabilizes at the trailing edge to form a symmetrical backflow vortex field, significantly enhancing radiation damping and the heave-added mass effect, effectively suppressing the platform's low-frequency resonance response under wave excitation.

[0046] The support structure forms the overall framework of the semi-submersible floating platform, connecting the various buoyancy units to form a complete spatial frame structure, giving the platform better integrity and rigidity. Specifically, the lateral support 310 connects two adjacent pontoons 100. When the bottom bypass 320 experiences heave motion due to waves, the heave plate 200 cuts through the seawater, generating significant water resistance, increasing heave damping, and providing sufficient vertical stability, thereby effectively suppressing the platform's heave amplitude and reducing its vertical rocking in waves. Simultaneously, it also influences the surrounding water flow field to a certain extent, making the wave forces on the platform more evenly distributed, thus indirectly reducing the platform's pitch and roll amplitudes and improving its stability in waves. This design not only enhances the platform's structural rigidity but also ensures the coordinated work between various components, thereby improving the overall stability of the platform.

[0047] Anchor chain 400 connects the heave plate 200 to the seabed, limiting the sway, roll, and bow movements of the wind turbine platform. The wind turbine 500 is mounted on a buoy 100 of any buoyancy unit. The buoy 100 has a hollow structure, providing sufficient buoyancy to allow the wind turbine 500 to float on the water surface while reducing overall weight. Counterweights can be installed on each buoy, or the weight of the semi-submersible wind turbine platform itself (which has a concave heave plate structure) can be used to achieve a configuration where part of the wind turbine platform is below sea level and part is above sea level. The connection of the heave plate 200 to the bottom of the buoy 100 lowers the center of gravity and increases heave damping.

[0048] The semi-submersible floating platform provided by this invention utilizes multiple buoyancy units and multiple sets of support mechanisms arranged alternately to form a ring-shaped spatial frame structure, giving the entire platform excellent stability and rigidity. In each buoyancy unit, a heave plate 200 is installed at the bottom of the pontoon 100. Furthermore, this invention innovatively proposes an inwardly recessed cavity on the surface of the heave plate 200. Utilizing the acceleration, compression, and expansion effects of the fluid within the cavity, a local high-pressure zone and a stable backflow vortex field are induced within the structure, significantly enhancing radiation damping and heave-added mass. This achieves a hydrodynamic control mechanism of "shape-based flow control and efficient energy consumption," effectively improving motion suppression capabilities without increasing the overall projected area of ​​the heave plate.

[0049] Through the above-mentioned design, the semi-submersible floating platform effectively controls construction costs while ensuring structural stability.

[0050] In specific embodiment one, such as Figures 4-6 As shown, a first cavity 210 is provided on the upper surface of the heave plate 200, and a second cavity 220 is provided on the lower surface of the heave plate 200. The first cavity 210 surrounds the edge of the float 100, forming a double-concave geometric configuration (i.e., a double-concave structure) with fluid focusing and energy dissipation functions. Alternatively, a semi-submersible wind power platform with a concave heave plate structure as shown in Embodiment 2 can be used, where cavities are only provided on the upper surface of the heave plate 200, while no cavities are provided on the lower surface of the heave plate 200, such as... Figure 7 As shown, a single upper cavity structure is formed. Alternatively, a semi-submersible wind power platform with a concave heave plate structure, as shown in Specific Embodiment Three, can also be used, that is, a cavity is only provided on the lower surface of the heave plate 200, while no cavity is provided on the upper surface of the heave plate 200, such as... Figure 8 As shown, a single lower cavity structure is formed.

[0051] In the specific embodiment 1, the heave plate 200 has a non-uniform mass and fluid interaction surface distribution in the lateral direction. When the platform undergoes roll or pitch motion, the flow field environment of the two cavities differs: the cavity on the sinking side experiences stronger fluid compression, increasing vortex intensity and generating a larger fluid reaction force; while the flow on the floating side weakens, and the reaction force decreases. This creates an asymmetric fluid torque, generating an adaptive restoring torque against the overturning motion, achieving passive and coordinated suppression of the roll and pitch degrees of freedom.

[0052] To improve the stability of the controlled fluid motion behavior, both the first cavity 210 and the second cavity 220 are centrally symmetrically arranged. The outer contour of the heave plate (200) is cylindrical.

[0053] Furthermore, the cavity edges of the heave plate 200 are continuous, smooth curved surfaces. The geometry of the cavity is symmetrically distributed laterally and maintains a consistent or gradually changing contour in the vertical direction. Its three-dimensional shape can be optimized according to the overall hydrodynamic performance requirements of the platform to match the dominant wave frequency response characteristics under different sea states. For example... Figure 4 As shown, the first cavity 210 and the second cavity 220 of the heave plate 200 have rectangular cross sections, and the float 100 is located at the center of the first cavity 210, so that the first cavity 210 forms an annular cavity and the second cavity 220 is a cylindrical cavity.

[0054] Preferably, the heave plate 200 can be arranged vertically in a single-layer, double-layer, or even multi-layer form, with a certain spacing between each layer, and connected by a support to expand the effective operating height and enhance the broadband damping capability. The multi-layer structure can adopt the same orientation or an alternating arrangement to further control the vortex shedding phase and optimize the overall energy dissipation characteristics.

[0055] Multiple buoyancy units are arranged in a centrally symmetrical manner. The number of buoys 100 is greater than or equal to three. For example, there are three buoys 100 arranged in a triangle. The cross brace 310 is fixed to the upper part of the three buoys 100, and the lower part of the three buoys 100 is fixed to the bottom bypass 320, forming a double-layered triangular configuration, providing sufficient connection strength and rigidity to the structure.

[0056] Compared with existing technologies, this solution using the double-concave geometry has the following advantages:

[0057] 1. Significantly improve damping performance without increasing the projected area.

[0058] Existing heave plates primarily improve damping by increasing planar dimensions or adding layers, resulting in bulky structures and increased weight. This invention introduces a double-concave geometric configuration, utilizing the acceleration, compression, and expansion effects of fluid within the cavity to induce localized high-pressure zones and stable vortex fields within the structure. This significantly enhances radiation damping and heave-added mass, achieving a hydrodynamic control mechanism of "shape-based flow control and efficient energy dissipation," effectively improving motion suppression capabilities without increasing the overall projected area of ​​the heave plate.

[0059] 2. Achieving cooperative inhibition of multi-degree-of-freedom motion

[0060] Traditional heave plates primarily optimize the heave direction, offering limited suppression of roll and pitch. The double-concave structure of this invention, when the platform overturns, creates an asymmetrical flow field between the two cavities, generating differential fluid dynamics and restoring torque. This passively suppresses roll and pitch responses, achieving coupled motion control of the three degrees of freedom (heave, roll, and pitch) and improving the overall stability of the platform.

[0061] 3. Lightweight structure reduces the overall weight of the platform and construction costs.

[0062] Under the same hydrodynamic performance, this invention improves the damping efficiency per unit area through geometric optimization, reduces material usage, and avoids the structural redundancy caused by traditional large-size heave plates. The reduction in structural weight helps improve platform stability, reduce the volume of the floating body, and reduce steel consumption and manufacturing costs, resulting in significant economic advantages.

[0063] 4. Strong flow field control capability and outstanding resonance region suppression effect.

[0064] The double concave structure enhances the energy dissipation capability near the platform's natural frequency by inducing a stable vortex field and extending the fluid interaction time, effectively weakening the resonance response. It is particularly suitable for low-frequency excitation conditions of floating wind power platforms under typical wave cycles, significantly improving wave resistance and operational stability.

[0065] To further enhance connection strength, the pontoon 100, heave plate 200, lateral support 310, and bottom bypass 320 can be integrally connected by welding or other methods. The heave plate structure can be integrated below the connecting components between platform columns, or located on the outside or bottom of the lower floating bodies such as the pontoon 100 and pontoon boxes, and fixed to the main structure by welding, bolting, or other detachable connection methods. Its overall structure possesses good continuity and stiffness matching characteristics, supports modular manufacturing and offshore installation, and is easy to promote and apply on semi-submersible platforms of different configurations.

[0066] Regarding structural materials, the heave plate 200 can be made of metal, composite materials, or a combination thereof, specifically selected based on strength, corrosion resistance, weight, and manufacturing process requirements. The structural surface can be equipped with flow-guiding features, such as ribs, grooves, or micro-turbulence elements, to regulate boundary layer development and eddy current stability, further improving fluid energy dissipation efficiency without altering its basic biconcave topological characteristics. This biconcave heave plate 200 is suitable for various types of semi-submersible floating platforms, including but not limited to three-column, four-column, and multi-pontoon configurations, and its position and quantity can be flexibly configured according to the overall platform layout. Its geometry can be designed using parametric modeling and hydrodynamic optimization methods to achieve optimal motion response control under specific marine environmental conditions.

[0067] Specifically, the width of the bottom bypass 320 is greater than the width of the lateral support 310. By optimizing the cross-sectional dimensions and shape, effective dissipation of wave energy is achieved, and the platform's heave damping is improved, forming a damping synergy system and a structural strength synergy system. On the one hand, the structural damping area is increased, and on the other hand, a more effective energy dissipation zone is formed under the action of waves, further reducing the heave amplitude of the platform.

[0068] Anchor chain 400 is fixedly connected to sag plate 200 and installed in a circumferential manner at the bottom sag plate, such as... Figure 6 As shown. The lower end of the anchor chain is anchored to the seabed, providing mooring stiffness, limiting the platform's pitch and roll displacements, and suppressing its bow motion. The anchor chain 400 is connected to the bottom heave plate 200 by means including but not limited to universal joints, online tensioners, and lugs. It should be noted that the number of anchor chains can be adjusted according to specific sea conditions; the three anchor chains shown in the example are for illustrative purposes only.

[0069] Fluid dynamics simulations have verified that the double concave heave plate can significantly improve heave damping performance without significantly increasing the projected area and structural volume, and effectively suppress roll and pitch motions, thereby improving the overall stability, wave resistance and operational safety of the floating wind power platform.

[0070] This invention achieves active control of the flow field by introducing a surface cavity heave plate structure, significantly improving the hydrodynamic performance of the platform without significantly increasing the structural size. This design is reasonable, technologically advanced, and engineering feasible, providing an innovative solution for high-performance heave control of deep-sea floating wind power platforms. Therefore, the semi-submersible wind power platform with a concave heave plate structure provided by this invention offers an efficient, reliable, and economical floating motion control technology solution for the large-scale development of deep-sea wind power in my country.

[0071] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0072] In the description of this application, "multiple" means two or more. If "first" or "second" is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0073] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0074] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0075] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0076] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0077] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A semi-submersible wind power platform with a concave heave plate structure, characterized in that, It includes multiple buoyancy units, multiple sets of support mechanisms, anchor chains (400) and fans (500). Two adjacent buoyancy units are connected by a set of support mechanisms, so that the multiple buoyancy units are arranged in a ring structure through the support mechanisms. Each of the buoyancy units includes a float (100) and a heave plate (200). The heave plate (200) is disposed at the bottom of the float (100), and the upper and / or lower surfaces of the heave plate (200) are provided with inwardly recessed cavities. Each of the support mechanisms includes a lateral support (310) and a bottom bypass (320). The floats (100) of two adjacent buoyancy units are connected by a lateral support (310), and the sway plates (200) of two adjacent buoyancy units are connected by a bottom bypass (320). The anchor chain (400) is used to connect the heave plate (200) and the seabed, and the wind turbine (500) is installed on the buoy (100) of any of the buoyancy units.

2. The semi-submersible wind power platform according to claim 1, characterized in that, The upper surface of the heave plate (200) is provided with a first cavity (210), and the lower surface of the heave plate (200) is provided with a second cavity (220). The first cavity (210) surrounds the edge of the float (100) in a circle.

3. The semi-submersible wind power platform according to claim 2, characterized in that, The first cavity (210) and the second cavity (220) are both centrally symmetrically arranged.

4. The semi-submersible wind power platform according to claim 2, characterized in that, The outer contour of the heave plate (200) is cylindrical.

5. The semi-submersible wind power platform according to claim 1, characterized in that, The cavity edge of the heave plate (200) is a continuous smooth curved surface.

6. The semi-submersible wind power platform according to claim 1, characterized in that, The heave plates (200) in each of the buoyancy units are configured as multiple layers, and the adjacent layers of heave plates (200) are connected by a bracket.

7. The semi-submersible wind power platform according to claim 6, characterized in that, The cavity arrangement of each layer of the heave plate (200) is exactly the same, or the cavity orientation of each layer of the heave plate (200) is arranged alternately.

8. The semi-submersible wind power platform according to claim 1, characterized in that, The multiple buoyancy units are arranged in a centrally symmetrical manner.

9. The semi-submersible wind power platform according to claim 1, characterized in that, The heave plate (200) and float (100) in each of the buoyancy units are connected by welding or detachably.

10. The semi-submersible wind power platform according to claim 1, characterized in that, The width of the bottom bypass (320) is greater than the width of the lateral support (310).

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