Floating wing of floating wind turbine platform and construction method thereof

Abstract

The present application relates to the field of offshore wind power, in particular to a floating wing of a floating wind turbine platform and a construction method thereof, the floating wing comprising: a shell formed by a generatrix sweeping along a cross-sectional profile line, the generatrix being a parabola, a hyperbola, a circular arc or a Bézier curve, and the floating wing being capable of being fixed to the side of a wind turbine platform column, the floating wing provided by the present application being applicable to the floating wind turbine platform, capable of greatly increasing the waterline area and the buoyancy of the platform, improving the longitudinal stiffness of the platform, thereby significantly improving the overturning resistance of the platform in wind and waves, reducing the heave and pitch of the platform, and improving the initial stability of the platform, capable of effectively responding to the variable load in the marine environment and ensuring the stable operation of the wind turbine under different sea conditions, the design of the floating wing optimizing the fluid dynamics of the structure, effectively reducing the impact of waves on the platform, and improving the wind and wave resistance of the platform.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power, and in particular to a floating wing of a floating wind turbine platform and a construction method thereof. Background Art

[0002] Floating wind turbine platforms are a key development direction for offshore wind power, particularly in deep waters. However, they are susceptible to the effects of wind, waves, and currents in harsh sea conditions, which can reduce their stability and safety.

[0003] Due to the unique characteristics of my country's waters, floating platforms often adopt a semi-submersible design. To further increase the waterplane area and longitudinal stiffness of the structure, thereby enhancing platform stability, measures such as increasing the number and distribution of pontoons, increasing column diameters, and employing angular and tilted columns are often adopted. However, these measures significantly increase material usage and construction costs, while the complex structural design and construction techniques increase the difficulty of construction. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a floating wing of a floating wind turbine platform and a construction method thereof.

[0005] In a first aspect, the present invention provides a buoy for a floating wind turbine platform, comprising:

[0006] The shell is formed by sweeping a generatrix along a cross-sectional contour line, wherein the generatrix is ​​a parabola, a hyperbola, a circular arc or a Bézier curve.

[0007] The floating wings can be fixed to the side of the wind turbine platform column and increase the longitudinal stiffness of the wind turbine platform. The outer dimensions of the floating wings are determined by the following formula:

[0008] K=ρg(I+V w Z B )-mgZ G

[0009] H=kH s

[0010] Where K is the longitudinal hydrostatic stiffness, ρ is the seawater density, g is the acceleration of gravity, I is the moment of inertia of the waterline, and V is w is the displacement of the wind turbine platform, m is the total mass of the floating wind turbine, Z B is the buoyancy center of the floating wind turbine, Z G is the center of gravity of the floating wind turbine, H is the height of the floating wing, and H s is the wave splash height, k is the safety factor, k>1.

[0011] Preferably, the Bézier curve is described by the following formula:

[0012]

[0013] wherein u is a variable, the change interval is -1~0, (x0, y0), (x1, y1), (x2, y2) are three control points.

[0014] Preferably, the Bézier curve is described by the following formula:

[0015]

[0016] wherein u is a variable, the change interval is -1~0, (x0, y0), (x1, y1), (x2, y2), (x3, y3) are four control points.

[0017] Preferably, the cross-sectional profile of the float wing is described by a Bézier parametric curve function, and the control point coordinates of the Bézier curve are as follows:

[0018]

[0019] wherein x t is the half cross-sectional length, y t is the half cross-sectional width, r is the leading edge radius, and b is the Bezier curve parameter.

[0020] Preferably, the cross-section of the float wing is circular, elliptical, diamond-shaped or polygonal.

[0021] Preferably, the float wing is made of polyurethane foam and glass fiber reinforced composite material.

[0022] Preferably, the float wing comprises a plurality of modules, and adjacent two modules are detachably fixedly connected.

[0023] Preferably, adjacent two modules are connected and fixed through a mortise and tenon structure.

[0024] In a second aspect, the present application provides a floating wind turbine platform, comprising a column, comprising any of the float wings, and the float wing is fixed to the side of the column.

[0025] Preferably, the float wing is detachably fixed to the side of the column.

[0026] Preferably, the float wing and the column are connected and fixed through a mortise and tenon structure.

[0027] Preferably, a limiting device is arranged above and below the float wing, respectively.

[0028] In a third aspect, the present application provides a wind turbine, comprising any of the wind turbine platforms.

[0029] In a fourth aspect, the present application provides a construction method of a floating wing of a floating wind turbine platform, for constructing the floating wing, comprising the following steps:

[0030] S1: hoist one module of the floating wing and detachably fix it with the column, and install a first water stop on one side of the module;

[0031] S2: hoist the next module of the floating wing, and detachably fix the next module and the previous module with the column respectively, install a first water stop on one side of the next module, and install a second water stop at the connection between the next module and the previous module;

[0032] S3: repeat S2 until the installation of all the modules of the floating wing is completed.

[0033] Preferably, in S1 and S2, the module and the column are connected through a mortise and tenon structure.

[0034] Preferably, in S2, the next module and the previous module are connected through a mortise and tenon structure.

[0035] Preferably, it further comprises S4: setting a limiting device above and below the floating wing.

[0036] Compared with the prior art, the present application has the following beneficial effects:

[0037] 1. The floating wing suitable for the floating wind turbine platform provided by the present application can greatly increase the waterline area and the buoyancy of the platform, improve the longitudinal stiffness of the platform, reduce the inclination range of the platform in the longitudinal direction, thereby significantly improving the anti-overturning ability of the platform in the wind and wave, reducing the heave and pitch of the platform, and improving the initial stability of the platform. The enhanced longitudinal stiffness can effectively respond to the variable load in the marine environment, ensuring the stable operation of the wind turbine under different sea conditions. In addition, the design of the floating wing optimizes the fluid dynamics of the structure, effectively reduces the impact of waves on the platform, and improves the wind and wave resistance of the platform.

[0038] 2. The floating wing suitable for the floating wind turbine platform provided by the present application does not significantly increase the weight of the platform, and reduces the overall size requirement of the platform, thereby reducing the material and construction cost.

[0039] 3. The present application can use conventional columns, only need to add floating wings in the splash zone, effectively prevent the corrosion of seawater to the column, prolong the service life of the structure, reduce the maintenance cost. The floating wing shell of the present application can be customized and produced, the construction is relatively cheap, and can be flexibly adjusted and combined according to different sea conditions and platform requirements, quickly deployed and removed, and the adaptability and emergency response ability of the structure are improved.

[0040] 4. The floating wing suitable for floating wind turbine platform provided by the application can be constructed by using modular construction, each module can be independently transported and installed, thereby simplifying the construction process and reducing the installation cost and time. When maintenance is needed, the damaged module can be conveniently disassembled and replaced, thereby improving the maintenance efficiency and reducing the downtime. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 The figure is a three-dimensional structural schematic diagram of the wind turbine.

[0042] Figure 2 The figure is a three-dimensional structural schematic diagram of the floating wing.

[0043] Figure 3 The figure is an outer surface profile curve diagram of the shell of the floating wing.

[0044] Figure 4 The figure is a quarter curve schematic diagram of the floating wing when the cross section is a Bezier curve.

[0045] Figure 5 The figure is a schematic diagram of the floating wing when the cross section is a circle, a Bezier curve or a rhombus.

[0046] Figure 6 The figure is a surge response diagram of the floating wing when the cross section is a circle, a Bezier curve or a rhombus.

[0047] Figure 7 The figure is a schematic diagram of the connection between the floating wing and the column.

[0048] Figure 8 The figure is a schematic diagram of the connection between the floating wing modules and the connection between the floating wing and the column.

[0049] Figure 9 The figure is a schematic diagram of the connection between the floating wing modules.

[0050] Markings in the figure:

[0051] 1 - buoy, 2 - wind turbine tower, 3 - wind turbine impeller, 4 - column, 5 - floating wing, 51 - floating wing module, 6 - mooring assembly, 7 - limiting device, 8 - mortise and tenon structure, 9 - first water stop, 10 - second water stop. DETAILED DESCRIPTION

[0052] The application will be further described in detail below in combination with specific embodiments. However, it should not be understood that the above-mentioned subject matter of the application is limited to the following embodiments only, and any technology realized based on the content of the application falls within the scope of the application.

[0053] In the description of specific embodiments of the present application, the terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are expressed based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship when the product / device / apparatus is usually used, unless otherwise specified. These terms of orientation or positional relationship are only for the convenience of describing the present application or simplifying the description in specific embodiments to facilitate the quick understanding of the scheme by the skilled person, and therefore cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "horizontal", "vertical", "suspended", "parallel", etc. do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspended", "parallel", etc. and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the present application scheme.

[0055] In addition, the terms "first", "second", "third", etc. in the description of the present application are only used to distinguish the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0056] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0057] In addition, in the description of the technical scheme of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, such as welding, riveting, bolting, screwing, etc. The connection means commonly used in the art. Such connection can be mechanical connection, electrical connection or communication connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication between two elements.

[0058] Example 1

[0059] like Figure 2 As shown, a floating wing 5 of a floating wind turbine platform includes: a shell, wherein the shell is formed by sweeping a busbar along the cross-sectional contour line of the floating wing 5, and the busbar is a parabola, a hyperbola, an arc or a Bézier curve, as shown in FIG. Figure 3 shown.

[0060] like Figure 1 As shown, the buoyant wing 5 can be fixed to the side of the wind turbine platform column 4 and increase the pitch stiffness of the wind turbine platform to prevent excessive pitch. The outer dimensions of the buoyant wing 5 are determined by the following formula:

[0061] K=ρg(I+V w Z B )-mgZ G

[0062] H=kH s

[0063] Where K is the longitudinal hydrostatic stiffness, ρ is the seawater density, g is the acceleration of gravity, I is the moment of inertia of the waterline, and V is w is the displacement of the wind turbine platform, m is the total mass of the floating wind turbine, Z B is the buoyancy center of the floating wind turbine, Z G is the center of gravity of the floating wind turbine, H is the height of the floating wing 5, and H s is the wave splash height, k is the safety factor, k>1, and can take a value of 1.5 to 2.5, and is adjusted according to the platform's load-bearing requirements and stability analysis.

[0064] (1) When the generatrix is ​​a parabola, the parabolic profile has good hydrodynamic performance and can effectively reduce fluid resistance. The advantages of the parabolic profile include a larger waterline area and better resistance to wave impact. The parabolic profile is defined as:

[0065] y=ax 2 +bx+c

[0066] Where a, b, and c are design parameters that can be obtained through optimization calculations. x is the height of the wing 5 from bottom to top, and y is the corresponding profile radius. By varying these design parameters, the buoyancy distribution and hydrodynamic characteristics of the wing 5 can be optimized.

[0067] (2) When the generatrix is ​​a hyperbola, the hyperbola profile can increase the curvature of the top of the wing 5, reduce the resistance near the water surface, and maintain a larger waterplane area. The hyperbola profile is defined as:

[0068]

[0069] Where a and b are design parameters, x is the height of the float 5 from the bottom to the top, and y is the corresponding profile radius.

[0070] (3) When the generatrix is a circular arc, the circular arc profile is a part of a sphere. This design can provide good buoyancy and effectively reduce the splash effect.

[0071] x 2 +y 2 =r 2

[0072] Where r is the radius of the circular arc. By cutting different spherical parts, different top and bottom of the float 5 can be designed to adapt to the curvature of the buoyancy and hydrodynamic requirements.

[0073] (4) When the generatrix is a Bézier curve, the Bézier curve is a flexible design tool that is particularly suitable for determining the optimal profile shape through an optimization algorithm. Different numbers of control points can be set to achieve different optimization purposes.

[0074] Preferably, the control points can be 3 or more.

[0075] If 3 control points are set, the Bézier curve is described by the following formula:

[0076]

[0077] Where u is a variable, the change interval is -1-0, (x0, y0), (x1, y1), (x2, y2) are the three control points.

[0078] If 4 control points are set, the Bézier curve is described by the following formula:

[0079]

[0080] Where u is a variable, the change interval is -1-0, (x0, y0), (x1, y1), (x2, y2), (x3, y3) are the four control points.

[0081] Further, the cross section of the float 5 can adopt conventional geometric shapes such as circles, ellipses, diamonds, polygons, etc. or can be described by a Bézier parametric curve function. Research shows that the cross section of the float defined by the Bézier parametric curve method has better hydrodynamic performance than conventional geometric shapes such as circles, ellipses, rectangles, etc. It can effectively reduce the fluid resistance of the cross section, improve the cross section structure attribute, and effectively reduce the material cost. According to the specific requirements of the platform and the sea conditions, the size of the float 5 is determined to maximize the water surface area and improve stability.

[0082] When the cross-sectional profile of the float wing 5 is described by a Bézier parametric curve function, the number of control points can be 3 or more. Taking a Bézier curve with four control points as an example, the control point coordinates are as follows:

[0083]

[0084] where x t is the half cross-sectional length, y t is the half cross-sectional width, r is the leading edge radius, and b is the Bezier curve parameter. The quarter curve is shown in Figure 4 .

[0085] Taking a semi-submersible floating wind turbine as an example, the hydrodynamic performance of the float wing cross-section in the circular, diamond, and Bézier curve shapes is compared (as shown in Figure 5 ). The areas of the three cross-sections are equal, the flow velocity is 1 m / s, and the wave conditions are the same, among which the significant wave height is 2.5 m and the spectral peak period is 8 s. The time-domain calculation results of the surge response are shown in Figure 6 . It can be seen that under the same conditions, the surge response of the Bézier curve cross-section float wing is the smallest, and the hydrodynamic performance is the best.

[0086] In a preferred embodiment, the float wing 5 is made of polyurethane foam and glass fiber reinforced composite material. Polyurethane foam is easy to be damaged by sea waves in complex marine environment, and glass fiber material as a typical brittle material has low energy absorption efficiency. The combination of polyurethane foam and glass fiber material can play the advantages of resisting marine environmental load and high-efficiency energy absorption. Research shows that the composite material of offshore structure can absorb 96.3% of the collision energy and reduce the maximum impact force by 62.9%. Polyurethane foam is the main energy absorption material, which absorbs 81.34% of the energy in the impact process, and glass fiber can enhance the stiffness of the structure. The glass fiber and polyurethane foam achieve the function of energy absorption and stress through their own yield deformation. The composite material has the advantages of high strength, light weight, good energy absorption characteristics, and corrosion resistance, which can ensure that the water surface area is increased without significantly increasing the total weight of the platform.

[0087] As shown in Figure 8 , in a preferred embodiment, the float wing 5 is a modular structure. Specifically, the float wing 5 can include a plurality of float wing modules 51, and adjacent two float wing modules 51 are detachably fixedly connected, for example, connected and fixed through a mortise and tenon structure 8. The float wing module 51 connection surface can be pre-fabricated with a mortise and tenon structure groove, and a double-layer rubber waterstop can be arranged between the float wing modules 51 to prevent seawater from seeping in and ensure the sealing and durability of the connection.

[0088] Example 2

[0089] As shown in Figure 1 , a floating wind turbine platform, the main structure of the floating wind turbine platform includes semi-submersible, single column or tension leg platform (TLP) and the like, which functions to provide buoyancy to support the wind turbine. The floating wind turbine platform includes a pontoon 1, a wind turbine tower 2, a column 4, a mooring assembly 6 and a floating wing 5 as described in embodiment 1, which is fixed to the side of the column 4, as shown in Figure 7 .

[0090] The pontoon 1 is used to provide buoyancy and lower the center of gravity of the structure. In addition, the pontoon 1 can function as a heave plate, significantly reducing the heave motion of the structure. The pontoon 1 can be provided with a cabin, and the center of gravity of the structure can be adjusted by adjusting the ballast (sea water or solid ballast). The wind turbine tower 2 is used to install the wind turbine impeller 3. The mooring assembly 6 can be distributed, and catenary, tension tendon, semi-tension mooring or combination can be used. The mooring assembly 6 can be connected to the floating platform or the pontoon 1, and is used to provide restoring force and tension.

[0091] In some embodiments, the floating wing 5 is sleeved on the side of the column 4, and the top and bottom of the floating wing 5 are fixedly connected with the column 4 respectively. Further, the top and bottom of the floating wing 5 can be sealingly connected with the column 4 respectively.

[0092] In a more preferred embodiment, the floating wing 5 is detachably fixed to the side of the column 4. For example, as shown in Figure 8 , the floating wing 5 and the column 4 are connected and fixed by a mortise and tenon structure 8 (tenon and groove matching) to facilitate installation and disassembly.

[0093] In a more preferred embodiment, a limiting device 7 is arranged above and below the floating wing 5 respectively to reduce the risk of the floating wing 5 falling off. The limiting device 7 is fixedly connected with the column 4, and the limiting device 7 can be a limiting block, a limiting baffle and the like, which is used to limit the position of the floating wing 5.

[0094] In a more preferred embodiment, the floating wing 5 can be installed in the splash zone, effectively preventing seawater from corroding the column 4, prolonging the service life of the structure and reducing maintenance costs.

[0095] Embodiment 3

[0096] As shown in Figure 1 , a wind turbine includes a wind turbine impeller 3 and a wind turbine platform as described in embodiment 2.

[0097] Embodiment 4

[0098] A construction method of a floating wing 5 of a floating wind turbine platform, which is used to construct the floating wing 5 as described in embodiment 1, includes the following steps:

[0099] S1: Hoist a float wing module 51 and detachably fix it to the column 4. Install the first water stop 9 on one side of the float wing module 51. Preferably, the tenon and groove structure is prefabricated on the surface of the float wing module 51 and the column 4, and the float wing module 51 and the column 4 are connected through the mortise and tenon structure 8. Preferably, the bolts and connecting parts for fixing the water stop are pre-buried in the float wing module 51 to facilitate the installation of the first water stop 9.

[0100] S2: Hoist the next float wing module 51 and detachably fix it to the previous float wing module 51 and the column 4. Install the first water stop 9 on one side of the next float wing module 51 and the second water stop 10 at the connection between the next float wing module 51 and the previous float wing module 51, as shown in Figure 9 .

[0101] Preferably, the tenon and groove structure is prefabricated on the surface of the float wing module 51 and the column 4, and the float wing module 51 and the column 4 are connected through the mortise and tenon structure 8. Preferably, the bolts and connecting parts for fixing the water stop are pre-buried in the float wing module 51 to facilitate the installation of the first water stop 9 and the second water stop 10, ensuring good sealing between the float wing modules 51 and between the float wing modules 51 and the platform structure.

[0102] S3: Repeat S2 until all float wing modules 51 are installed. After installation is complete, the entire system is inspected to ensure that no water stop is missing or the bolts are loose.

[0103] Preferably, it also includes coating a corrosion-resistant coating on the outer surface of the float wing 5 to further enhance its corrosion resistance in the splash zone. Glass fiber reinforced plastic or carbon fiber composite material is selected to provide high strength and corrosion resistance.

[0104] Preferably, it also includes S4: setting a limiting device 7 above and below the float wing 5 to provide stable upward and downward protection. For example, a limiting slot is provided on the column 4, and when the float wing 5 is installed in place, the limiting device 7 is inserted into the limiting slot and tightly clamped between the float wing 5 and the column. The limiting device is also fixed by bolts to provide stable protection.

[0105] The floating wing 5 adopts a modular design, each module can be independently transported and installed, which simplifies the construction process, reduces the installation cost and time. It can be flexibly adjusted and combined according to different sea conditions and platform requirements, quickly deployed and removed, and the adaptability and emergency response capability of the structure are improved. The mortise and tenon structure design makes the floating wing module 51 can be disassembled at any time during daily maintenance or overhaul, providing flexibility for cleaning, maintenance or replacement, improving maintenance efficiency and reducing downtime. When disassembled, the connecting bolts and seals are removed one by one, the floating wing module 51 is taken out of the column sliding groove through hoisting equipment, and necessary maintenance operation is carried out.

[0106] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A floating wing (5) of a floating wind turbine platform, characterized in that: include: The shell is formed by sweeping the generatrix along the cross-sectional contour line, wherein the generatrix is ​​a Bézier curve. The floating wing (5) can be fixed to the side of the wind turbine platform column (4) and increase the longitudinal stiffness of the wind turbine platform. The outer dimensions of the floating wing (5) are determined by the following formula: Where, K is the longitudinal hydrostatic stiffness, is the density of seawater, g is the acceleration due to gravity, I is the waterplane moment of inertia, V w is the displacement of the wind turbine platform, m is the total mass of the floating wind turbine, Z B is the buoyancy center of the floating wind turbine, Z G is the center of gravity of the floating wind turbine, H is the height of the wing (5), H s is the wave splash height, k is the safety factor, k >1; The Bézier curve is described by the following formula: in, u is a variable, the range of change is -1~0, ( x 0, y 0), ( x 1, y 1), ( x 2, y 2), ( x 3, y 3) are four control points; The cross-sectional contour line of the floating wing (5) is described by a Bézier parameterized curve function, and the control point coordinates of the Bézier curve are as follows: in, x t is half section length, y t is half section width, r is the leading edge radius, b are the Bezier curve parameters.

2. The floating wing (5) of a floating wind turbine platform according to claim 1, characterized in that: The cross section of the floating wing (5) is circular, elliptical, diamond-shaped or polygonal.

3. The buoyant wing (5) of a floating wind turbine platform according to claim 1, characterized in that: The floating wing (5) is made of polyurethane foam and glass fiber reinforced composite material.

4. A floating wing (5) of a floating wind turbine platform according to any one of claims 1 to 3, characterized in that: The floating wing (5) comprises a plurality of floating wing modules (51), and two adjacent floating wing modules (51) are detachably fixedly connected.

5. The buoyancy wing (5) of a floating wind turbine platform according to claim 4, characterized in that: Two adjacent floating wing modules (51) are connected and fixed via a mortise and tenon structure (8).

6. A floating wind turbine platform, comprising a column (4), characterized in that: It comprises the floating wing (5) according to any one of claims 1 to 5, wherein the floating wing (5) is fixed to the side surface of the column (4).

7. The floating wind turbine platform according to claim 6, characterized in that: The floating wings (5) are detachably fixed to the side surfaces of the upright posts (4).

8. The floating wind turbine platform according to claim 7, characterized in that: The floating wing (5) and the upright column (4) are connected and fixed via a mortise and tenon structure (8).

9. A floating wind turbine platform according to any one of claims 6-8, characterized in that: Limiting devices (7) are respectively provided above and below the floating wing (5).

10. A fan, characterized in that: Comprising a wind turbine platform as described in any one of claims 6-9.

11. A method for constructing a floating wing (5) of a floating wind turbine platform, characterized in that: The method for constructing the floating wing (5) as claimed in any one of claims 4 to 5 comprises the following steps: S1: hoisting a floating wing module (51) and detachably fixing it to the column (4), and installing a first water stop (9) on one side of the floating wing module (51); S2: hoisting the rear floating wing module (51), and detachably fixing the rear floating wing module (51), the front floating wing module (51), and the column (4), installing a first water stop (9) on one side of the rear floating wing module (51), and installing a second water stop (10) at the connection between the rear floating wing module (51) and the front floating wing module (51); S3: Repeat S2 until all the floating wing modules (51) are installed.

12. The construction method of the floating wing (5) of a floating wind turbine platform according to claim 11, characterized in that: In S1 and S2, the floating wing module (51) and the column (4) are connected via a mortise and tenon structure (8).

13. The construction method of the floating wing (5) of a floating wind turbine platform according to claim 12, characterized in that: In the above-mentioned S2, the rear floating wing module (51) and the front floating wing module (51) are connected via a mortise and tenon structure (8).

14. A method for constructing a buoy (5) of a floating wind turbine platform according to any one of claims 11 to 13, characterized in that: The method further comprises S4: arranging limit devices (7) above and below the floating wing (5) respectively.

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