Floating wing of floating type fan platform and construction method of floating wing

Abstract

The invention relates to the field of offshore wind power, in particular to a floating wing of a floating type fan platform and a construction method of the floating wing, the floating wing comprises a shell, the shell is formed by sweeping a generatrix along a cross section contour line, the generatrix is a parabola, a hyperbolic curve, an arc or a Bezier curve, and the floating wing can be fixed to the side face of a stand column of the fan platform. According to the floating wing suitable for the floating type fan platform, the waterplane area and the buoyancy of the platform can be greatly increased, and the trim rigidity of the platform is improved, so that the anti-overturning capacity of the platform in stormy waves is remarkably improved, heaving and pitching of the platform are reduced, and the initial stability of the platform is improved. And variable loads in the marine environment can be effectively dealt with, and stable operation of the draught fan under different sea conditions is ensured. The design of the floating wings optimizes the hydrodynamic characteristics of the structure, effectively reduces the impact of waves on the platform, and improves the anti-storm capability 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 an important direction for the development of offshore wind power, especially suitable for deep sea areas. However, floating wind turbine platforms are susceptible to the influence of wind, waves and currents in severe sea conditions, resulting in reduced stability and safety of the platforms.

[0003] In view of the characteristics of my country's sea areas, floating platforms mostly adopt semi-submersible structural design. In order to further increase the waterline area and longitudinal stiffness of the structure and improve the stability of the platform, measures such as increasing the number and distribution of buoys on the platform, increasing the diameter of the columns, using anisotropic columns, and inclined columns are often adopted. However, these measures significantly increase the use of materials and construction costs, and the complex structural design and construction process 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 floating wing of 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, an arc or a Bézier curve.

[0007] The floating wing 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 wing 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 gravitational acceleration, I is the moment of inertia of the waterline, and 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 floating wing, and H s is the splash height, k is the safety factor, k>1.

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

[0012]

[0013] Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), and (x2, y2) are three control points.

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

[0015]

[0016] Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), (x2, y2), and (x3, y3) are four control points.

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

[0018]

[0019] Among them, x t is the half section length, y t is the half-section width, r is the leading edge radius, and b is the Bezier curve parameter.

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

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

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

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

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

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

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

[0027] Preferably, limiting devices are respectively provided above and below the floating wing.

[0028] In a third aspect, the present invention provides a wind turbine, comprising any one of the wind turbine platforms described above.

[0029] In a fourth aspect, the present invention provides a method for constructing a floating wing of a floating wind turbine platform, which is used to construct the floating wing, comprising the following steps:

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

[0031] S2: hoisting the rear module of the floating wing, and detachably fixing the rear module to the front module and the column, installing a first water stop on one side of the rear module, and installing a second water stop at the connection between the rear module and the front module;

[0032] S3: Repeat S2 until all floating wing modules are installed.

[0033] Preferably, in S1 and S2, the modules and the columns are connected by a mortise and tenon structure.

[0034] Preferably, in S2, the latter module and the former module are connected by a mortise and tenon structure.

[0035] Preferably, the method further comprises S4: providing limit devices above and below the floating wing respectively.

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

[0037] 1. The floating wing provided by the present invention is suitable for a floating wind turbine platform, which can greatly increase the water plane area and the buoyancy of the platform, improve the longitudinal stiffness of the platform, and reduce the longitudinal tilt amplitude of the platform, thereby significantly improving the platform's anti-overturning ability in wind and waves, reducing the platform's heave and pitch, and improving the platform's initial stability. The enhanced longitudinal stiffness can effectively cope with the variable loads in the marine environment and ensure the stable operation of the wind turbine under different sea conditions. In addition, the design of the floating wing optimizes the fluid dynamic characteristics of the structure, effectively reduces the impact of waves on the platform, and improves the platform's ability to resist wind and waves.

[0038] 2. The floating wing suitable for a floating wind turbine platform provided by the present invention does not significantly increase the weight of the platform, reduces the requirements for the overall size of the platform, and thus reduces material and construction costs.

[0039] 3. The present invention can use conventional columns, and only needs to add floating wings in the splash zone, which effectively prevents the corrosion of seawater on the columns, prolongs the service life of the structure, and reduces maintenance costs. The floating wing shell of the present invention 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, and quickly deployed and removed, which improves the adaptability and emergency response capabilities of the structure.

[0040] 4. The floating wing for floating wind turbine platform provided by the present invention can be constructed in modularized manner, and each module can be transported and installed independently, which simplifies the construction process and reduces the installation cost and time. When maintenance is required, the damaged module can be easily disassembled and replaced, which improves the maintenance efficiency and reduces the downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the fan described in the present invention.

[0042] Figure 2 It is a schematic diagram of the three-dimensional structure of a floating wing described in the present invention.

[0043] Figure 3 It is a curve diagram of the outer surface contour of the shell of the floating wing described in the present invention.

[0044] Figure 4 It is a schematic diagram of a quarter curve when the cross section of the floating wing described in the present invention is a Bezier curve.

[0045] Figure 5 This is a schematic diagram of a floating wing of the present invention having a circular cross-section, a Bezier curve, or a diamond cross-section.

[0046] Figure 6 This is a surge response diagram when the cross-section of the floating wing described in the present invention is circular, Bezier curve, or diamond.

[0047] Figure 7 It is a schematic diagram of the connection between the floating wing and the column described in the present invention.

[0048] Figure 8 It is a schematic diagram of the connection between the floating wing modules and between the floating wing and the column described in the present invention.

[0049] Fig. 9 It is a schematic diagram of the connection between the floating wing modules described in the present invention.

[0050] Markings in the figure:

[0051] 1- pontoon, 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 waterstop, 10- second waterstop. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0053] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0055] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

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

[0057] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0058] Example 1

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

[0060] like Figure 1 As shown, the floating 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 floating 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 gravitational acceleration, I is the moment of inertia of the waterline, and 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 floating wing 5, and H s is the wave splash height, k is the safety factor, k>1, and can take a value of 1.5~2.5, 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 waterplane area and better wave impact resistance. The parabolic profile is defined as:

[0065] y=ax 2 +bx+c

[0066] Wherein, a, b, c are design parameters, which can be obtained through optimization calculation, x is the height from the bottom to the top of the floating wing 5, and y is the corresponding profile radius. By changing the design parameters, the buoyancy distribution and hydrodynamic characteristics of the floating 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 buoy 5, reduce the resistance near the water surface, and maintain a larger waterplane area. The hyperbola profile is defined as:

[0068]

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

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

[0071] x 2 +y 2 =r 2

[0072] Wherein, r is the radius of the arc. By cutting different spherical parts, the top and bottom of the floating wing 5 can be designed differently so that the curvature thereof can be adapted to the buoyancy and hydrodynamic requirements.

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

[0074] Preferably, the number of control points may be 3 or more.

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

[0076]

[0077] Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), and (x2, y2) are three control points.

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

[0079]

[0080] Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), (x2, y2), and (x3, y3) are four control points.

[0081] Furthermore, the cross section of the floating wing 5 can be a conventional geometric shape such as a circle, an ellipse, a diamond, a polygon, etc., or can be described by a Bézier parameterized curve function. Studies have shown that the cross section of the floating body defined by the Bézier parameterized curve method has better hydrodynamic performance than conventional geometric shapes such as a circle, an ellipse, a rectangle, etc., can effectively reduce the fluid resistance of the cross section, improve the structural properties of the cross section, and effectively reduce the material cost. The size of the floating wing 5 is determined according to the specific requirements of the platform and the sea conditions to maximize the water plane area and improve stability.

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

[0083]

[0084] Among them, x t is the half section length, y t is the half section width, r is the front edge radius, and b is the Bezier curve parameter. Figure 4 shown.

[0085] Taking a semi-submersible floating wind turbine as an example, the structures of the floating wing with circular, diamond and Bézier curve cross sections are compared (e.g. Figure 5 The hydrodynamic performance of the three sections is shown in Figure 1. The three sections have equal cross-sectional areas, the water velocity is 1m / s, and the wave conditions are the same. The significant wave height is 2.5m and the spectrum peak period is 8s. The time domain calculation results of the surge response are shown in Figure 1. Figure 6 As shown, it can be seen that under the same conditions, the longitudinal surge response of the Bézier curve cross-section floating wing is the smallest and its hydrodynamic performance is the best.

[0086] In a preferred embodiment, the buoy 5 is made of polyurethane foam and glass fiber reinforced composite materials. Polyurethane foam is easily damaged by the impact of waves in a complex marine environment, and glass fiber material, as a typical brittle material, has a low energy absorption efficiency. Combining polyurethane foam and glass fiber material can give play to the advantages of both resisting marine environmental loads and efficiently absorbing energy. Studies have shown that composite materials of offshore structures can absorb 96.3% of collision energy and reduce 62.9% of the maximum impact force. Polyurethane foam is the main energy-absorbing material, absorbing 81.34% of the energy during the impact. Glass fiber can enhance the rigidity of the structure. Glass fiber and polyurethane foam achieve the effect of energy absorption and force bearing through their own yield deformation. Composite materials have the advantages of high strength, light weight, good energy absorption characteristics, and good corrosion resistance, which can ensure that the total weight of the platform is not significantly increased while increasing the waterline area.

[0087] like Figure 8 As shown, in a preferred embodiment, the floating wing 5 is a modular structure. Specifically, the floating wing 5 may include a plurality of floating wing modules 51, and two adjacent floating wing modules 51 are detachably fixedly connected. For example, two adjacent floating wing modules 51 are connected and fixed by a mortise and tenon structure 8. The connection surface of the floating wing module 51 may be prefabricated with a mortise and tenon structure groove, and a double-layer rubber water stop may be provided between the floating wing modules 51 to prevent seawater from infiltrating and ensure the sealing and durability of the connection.

[0088] Example 2

[0089] like Figure 1 As shown, 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 other forms, and its function is 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 component 6 and a buoy 5 as described in Example 1, the buoy 5 is fixed to the side of the column 4, as shown in Figure 7 shown.

[0090] The pontoon 1 is used to provide buoyancy and lower the center of gravity of the structure; in addition, the pontoon 1 can act as a heave plate to significantly reduce the heave movement of the structure. The pontoon 1 may be provided with a cabin, and the center of gravity of the structure can be adjusted by adjusting the ballast (seawater 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 can adopt a catenary, tension tendons, semi-tension mooring or a combination. The mooring assembly 6 can be connected to the floating platform or the pontoon 1 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 respectively fixedly connected to the column 4. Further, the top and bottom of the floating wing 5 can be respectively sealed and connected to the column 4.

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

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

[0094] In a preferred embodiment, the buoy 5 can be installed in the splash zone to effectively prevent seawater from corroding the column 4, extend the service life of the structure, and reduce maintenance costs.

[0095] Example 3

[0096] like Figure 1 As shown, a fan comprises a fan impeller 3 and a fan platform as described in Example 2.

[0097] Example 4

[0098] A method for constructing a floating wing 5 of a floating wind turbine platform, used for constructing the floating wing 5 as described in Example 1, comprises the following steps:

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

[0100] S2: hoist the next floating wing module 51, and detachably fix the next floating wing module 51 to the previous floating wing module 51 and the column 4, install the first water stop 9 on one side of the next floating wing module 51, and install the second water stop 10 at the connection between the next floating wing module 51 and the previous floating wing module 51, as shown in FIG. Fig. 9 shown.

[0101] Preferably, tenon and groove structures are prefabricated on the surface of the floating wing module 51 and the column 4, and the floating wing module 51 and the column 4 are connected through the mortise and tenon structure 8. Preferably, bolts and connectors for fixing the waterstop are pre-embedded in the floating wing module 51 to facilitate the installation of the first waterstop 9 and the second waterstop 10, ensuring good sealing between the floating wing modules 51 and between the floating wing modules 51 and the platform structure.

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

[0103] Preferably, an anti-corrosion coating is applied to the outer surface of the floating wing 5 to further enhance its anti-corrosion performance 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 further includes S4: a limit device 7 is respectively provided above and below the floating wing 5 to provide stable upward and downward protection. For example, a limit slot is provided on the column 4, and when the floating wing 5 is installed in place, the limit device 7 is inserted into the limit slot and tightly clamped between the floating wing 5 and the column. The limit device is also fixed by bolts to provide stable protection.

[0105] The floating wing 5 adopts a modular design, and each module can be transported and installed independently, which simplifies the construction process and reduces installation costs and time. It can be flexibly adjusted and combined, quickly deployed and removed according to different sea conditions and platform requirements, improving the adaptability and emergency response capabilities of the structure. The mortise and tenon structure design allows the floating wing module 51 to be disassembled at any time during daily maintenance or overhaul, providing flexibility for cleaning, overhaul or replacement, improving maintenance efficiency and reducing downtime. During disassembly, remove the connecting bolts and seals one by one, remove the floating wing module 51 from the column slide by lifting equipment, and perform necessary maintenance operations.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A floating wing (5) of a floating wind turbine platform, characterized in that: include: 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, 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: K=ρg(I+V w Z B )-mgZ G H=kH S Where K is the longitudinal hydrostatic stiffness, ρ is the seawater density, g is the gravitational acceleration, I is the moment of inertia of the waterline, and 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 floating wing (5), and H s is the splash height, k is the safety factor, k>1.

2. The floating wing (5) of a floating wind turbine platform according to claim 1, characterized in that: The Bézier curve is described by the following formula: Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), and (x2, y2) are three control points.

3. The floating wing (5) of a floating wind turbine platform according to claim 1, characterized in that: The Bézier curve is described by the following formula: Among them, u is a variable with a variation range of -1 to 0, and (x0, y0), (x1, y1), (x2, y2), and (x3, y3) are four control points.

4. The floating wing (5) of a floating wind turbine platform according to claim 3, characterized in that: The cross-sectional contour line of the floating wing (5) is described by a Bézier parameterized curve function, and the coordinates of the control points of the Bézier curve are as follows: Among them, x t is the half section length, y t is the half-section width, r is the leading edge radius, and b is the Bezier curve parameter.

5. 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, rhombus or polygonal.

6. The floating 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.

7. A floating wing (5) of a floating wind turbine platform according to any one of claims 1 to 6, 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.

8. The floating wing (5) of a floating wind turbine platform according to claim 7, characterized in that: Two adjacent floating wing modules (51) are connected and fixed via a mortise and tenon structure (8).

9. A floating wind turbine platform, comprising a column (4), characterized in that: It comprises a floating wing (5) as described in any one of claims 1 to 8, wherein the floating wing (5) is fixed to the side of the column (4).

10. The floating wind turbine platform according to claim 9, characterized in that: The floating wing (5) is detachably fixed to the side surface of the column (4).

11. The floating wind turbine platform according to claim 10, characterized in that: The floating wing (5) and the upright column (4) are connected and fixed via a mortise and tenon structure (8).

12. A floating wind turbine platform according to any one of claims 9 to 11, characterized in that: Limiting devices (7) are respectively arranged above and below the floating wing (5).

13. A fan, characterized in that: Comprising a wind turbine platform as described in any one of claims 9-12.

14. 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 7 to 8 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) and 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 floating wing modules (51) are installed.

15. The construction method of the floating wing (5) of a floating wind turbine platform according to claim 14, 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).

16. The construction method of the floating wing (5) of a floating wind turbine platform according to claim 15, characterized in that: In S2, the rear floating wing module (51) and the front floating wing module (51) are connected via a mortise and tenon structure (8).

17. A method for constructing a floating wing (5) of a floating wind turbine platform according to any one of claims 14 to 16, characterized in that: The method further comprises S4: arranging limit devices (7) above and below the floating wing (5) respectively.

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