Floating wind driven generator

Abstract

The utility model provides a floating wind driven generator which comprises a base capable of floating on the water surface, a generator, a transmission assembly and a vertical axis fan blade. The relative position of the base is fixed through at least one anchor chain. The base is used for fixedly installing the generator, the generator is in transmission connection with the vertical axis fan blade through the transmission assembly, the vertical axis fan blade comprises a rotating axis and at least two evenly-distributed sub-blades, and the vertical axis fan blade rotates around the rotating axis under the action of wind power. And the transmission assembly drives the generator to rotate so as to generate electric energy. The structure is simple and reliable, cost is low, large-scale construction and popularization are facilitated, and therefore the clean energy utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a floating wind turbine. Background Technology

[0002] Existing floating wind turbines are generally horizontal-axis wind turbines. However, due to the high center of gravity of horizontal-axis wind turbines, maintaining overall stability and wind and wave resistance generally requires a large and heavy floating base, or complex stabilization devices or structures. This makes the existing floating wind turbines structurally complex and costly. Furthermore, because the windward direction of a floating wind turbine is difficult to precisely orient, and the wind direction is not entirely fixed, floating wind turbines generally require wind direction adjustment mechanisms to adjust the windward direction of the turbine blades in real time. This further complicates the overall structure and increases costs. Therefore, simplifying the structure of floating wind turbines and reducing their construction costs is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] To address at least one of the aforementioned technical problems, this utility model proposes a floating wind turbine, which simplifies the structure of the floating wind turbine, reduces its construction cost, and thus facilitates the improvement of clean energy adoption.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A floating wind turbine includes a base capable of floating on water, at least one anchor chain, a generator, a transmission assembly, and vertical axis wind turbine blades, wherein...

[0006] The base is floating on the water surface and fixed in relative position by at least one anchor chain. The base is used to fix the generator. The generator is connected to the vertical axis wind turbine blades through the transmission assembly. The vertical axis wind turbine blades include a rotating axis and at least two evenly distributed sub-blades. The vertical axis wind turbine blades rotate around their rotating axis under the action of wind force, and drive the generator to rotate through the transmission assembly to generate electrical energy.

[0007] Preferably, the transmission assembly further includes at least one external transmission interface for transmitting the transmission between at least two vertical axis wind turbine blades or at least two floating wind turbines.

[0008] Preferably, the external transmission interface is a transmission shaft assembly, at least one end of which is a universal joint structure for transmission connection with the external vertical axis wind turbine blades or the floating wind turbine.

[0009] Preferably, the external transmission interface further includes a positioning component for fixing the relative positions of at least two vertical axis wind turbine blades or at least two floating wind turbines that are connected to each other in a transmission manner.

[0010] Preferably, the external transmission interface further includes an angle adjustment component, which is used to adjust the relative positions of at least two vertical axis wind turbine blades or at least two floating wind turbines that are connected to each other in a transmission manner.

[0011] Preferably, the rotating shaft and the sub-blade are integrally formed, and the number of sub-blades is 3, with their shape and size remaining consistent along the axial direction of the rotating shaft.

[0012] Preferably, the sub-blade is arc-shaped along the diametrical direction of the rotation axis.

[0013] Preferably, the transmission assembly includes at least one of shaft drive, chain drive, belt drive, gear drive, magnetic coupling drive, and hydraulic drive, with one end connected to the vertical axis fan blades and the other end connected to the generator input shaft.

[0014] Preferably, the generator and the transmission assembly are fixedly positioned relative to the base, and the vertical axis fan blades are movably connected to one end of the transmission assembly.

[0015] Preferably, the rotating shaft is a shaft mounting through hole, and at least one cross-section of the shaft mounting through hole is non-circular, for transmission connection with one end of the transmission component passing through it; or,

[0016] At least one end of the vertical axis fan blade is provided with a groove or through hole around the rotation axis for transmission connection with one end of the transmission assembly to transmit the rotational torque of the vertical axis fan blade.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This invention relates to a floating wind turbine, comprising a base capable of floating on water, fixed in relative position by at least one anchor chain, a generator, a transmission assembly, and vertical axis wind turbine blades. The base is used to fix the generator, which is connected to the vertical axis wind turbine blades via the transmission assembly. Each vertical axis wind turbine blade includes a rotating axis and at least two evenly distributed sub-blades. Under wind force, the vertical axis wind turbine blades rotate around their rotating axis, driving the generator to rotate via the transmission assembly and generating electricity. The design is simple, reliable, and low-cost, facilitating large-scale construction and widespread adoption, thereby improving the utilization rate of clean energy. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a floating wind turbine generator according to an embodiment of the present invention.

[0020] Figure 2 This is a structural cross-sectional view of a floating wind turbine according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the operation of a floating wind turbine according to one embodiment of the present invention.

[0022] Figure 4 This is a structural cross-sectional view of the floating wind turbine generator according to the second embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the combined power generation structure of the floating wind turbine in the second embodiment of this utility model.

[0024] Figure 6 This is a schematic diagram of the combined power generation structure with adjustable angle for the floating wind turbine, as shown in the second embodiment of this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the third embodiment of the floating wind turbine blades of this utility model.

[0026] Figure 8 This is a cross-sectional view of the structure of the third embodiment of the floating wind turbine blades of this utility model.

[0027] Figure 9 This is a structural schematic diagram of the third embodiment of the floating wind turbine blades in the hidden state.

[0028] Figure 10 This is a structural cross-sectional view of the third embodiment of the floating wind turbine blades in the hidden state.

[0029] In the diagram: 1-base, 2-anchor chain, 3-generator, 4-transmission assembly, 5-vertical axis fan blade, 6-external transmission interface, 7-positioning assembly, 8-lifting assembly, 9-end cover, 51-rotating shaft, 52-sub-blade. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses or methods consistent with some aspects of this application as detailed in the appended claims.

[0031] In this utility model, the term "upper end" should be understood to include the upper part or top, and "lower end" should be understood to include the lower part or bottom. Furthermore, both "upper end" and "lower end" only indicate relative arrangement with respect to the accompanying drawings. In this utility model, the terms "first" and "second" are merely used to distinguish different structures or functions and do not represent a chronological order or degree of importance.

[0032] like Figures 1-10 As shown, a floating wind turbine includes a base 1 that can float on water, at least one anchor chain 2, a generator 3, a transmission assembly 4, and vertical axis wind turbine blades 5, wherein...

[0033] The base 1 is floating on the water surface and is fixed in relative position by at least one anchor chain 2. The base 1 is used to fix the generator 3. The generator 3 is connected to the vertical axis fan blade 5 through the transmission assembly 4. The vertical axis fan blade 5 includes a rotation axis 51 and at least two evenly distributed sub-blades 52. The vertical axis fan blade 5 rotates around its rotation axis 51 under the action of wind force, and drives the generator 3 to rotate through the transmission assembly 4 to generate electrical energy.

[0034] Specifically, the base 1 can be a hexahedron, cylinder, cone, or other irregular object, as long as it can float on the water surface. Preferably, the base 1 is a cone with a smaller lower section and a larger upper section. Compared to a hexahedron floating base, it distributes the force more evenly and has higher structural strength. Compared to a cylindrical floating base, it has a greater draft, more balanced force, more stable floating, and better anti-overturning performance. The anchor chain 2 can be one, two, or more. The specific number of anchor chains 2 can be determined according to the total weight and volume of the floating wind turbine, the wind force, the water flow thrust, and the underwater geological conditions. The base 1 can be relatively fixed to the water surface by at least one anchor chain to prevent it from being pushed away from the preset position by the wind or water flow.

[0035] More specifically, the generator 3 is fixedly mounted on the base 1, which can be mounted on the upper surface, middle, or inner bottom of the base 1, preferably on the inner bottom of the base 1, to minimize the center of gravity of the floating wind turbine and improve its stability. The generator 3 is connected to the vertical axis wind turbine blades 5 via the transmission assembly 4. This connection can be direct, such as fixing the vertical axis wind turbine blades 5 to one end of the input shaft of the generator 3 via a transmission structure to ensure transmission efficiency; or it can be indirect, such as connecting the generator 3 to the vertical axis wind turbine blades 5 via a coupling, hydraulic coupling, or magnetic coupling to reduce mechanical impact on the generator 3 and extend its service life.

[0036] Preferably, the transmission component 4 includes at least one of shaft drive, chain drive, belt drive, gear drive, magnetic coupling drive, and hydraulic drive, with one end connected to the vertical axis fan blade 5 and the other end connected to the input shaft of the generator 3.

[0037] More preferably, such as Figure 2 The transmission assembly 4 includes a transmission shaft and a transmission coupling assembly. The transmission shaft is connected to the rotation axis 51 of the vertical axis wind turbine blade 5. One end of the transmission coupling assembly is connected to the transmission shaft, and the other end is connected to the input shaft of the generator 3. This enables the generator 3 to be connected to the vertical axis wind turbine blade 5 through the transmission assembly 4. The structure is extremely simple and reliable, small in size and low in cost, which facilitates the construction and popularization of the floating wind turbine.

[0038] The rotating shaft 51 of the vertical axis wind turbine blade 5 is set perpendicular to the horizontal plane, allowing the base 1, generator 3, and transmission assembly 4 to all be located at the bottom of the vertical axis wind turbine blade 5. This significantly lowers the overall structural center of gravity of the floating wind turbine, thereby improving structural stability and reducing construction and maintenance costs. It also reduces the volume and weight requirements of the base 1, further lowering construction costs. The structure is simple, reliable, small in size, and low in cost, facilitating the construction and widespread adoption of the floating wind turbine. Furthermore, the vertically set rotating shaft 51 and sub-blades 52 can capture wind energy from various horizontal directions simultaneously without any adjustment, eliminating the wind direction tracking mechanism required in traditional wind turbines, simplifying the structure, reducing costs, and improving structural reliability.

[0039] The number of sub-blades 52 in the vertical axis fan blade 5 can be 2, 3, or more. The shape of the sub-blades 52 can be a planar shape that passes through or is parallel to the rotation axis 51, or it can be arc-shaped, spiral-shaped, semi-circular, etc. The connection method between the sub-blades 52 and the rotation axis 51 can be a detachable connection, such as a plug-in connection, tenon-and-mortise connection, bolt and nut connection, etc., or a non-detachable connection, such as welding, riveting, etc. To reduce production costs, preferably, the sub-blade 52 and the rotating shaft 51 are integrally formed. The specific integral forming method can be any one or more of the following: stamping, casting, die casting, forging, injection molding, blow molding, vacuum forming, extrusion, wire drawing, 3D printing, powder metallurgy, etc. Other integral forming methods will not be listed here. The vertical axis wind turbine blade 5 produced by the integral forming process has a simple structure, high strength, simple production, high standardization, low cost, and is easy to mass-produce. This greatly reduces the construction cost of the floating wind turbine generator with the vertical axis wind turbine blade 5 installed, and facilitates the construction and popularization of the floating wind turbine generator.

[0040] Preferably, the rotating shaft 51 and the sub-blade 52 are integrally formed, and the number of sub-blades 52 is 3, with their shape and size remaining consistent along the axial direction of the rotating shaft 51.

[0041] Setting three sub-blades 52, compared to setting two sub-blades 52, can significantly improve the structural strength and rigidity of the vertical axis wind turbine blade 5, increase the service life and structural reliability of the vertical axis wind turbine blade 5, and compared to setting four or more sub-blades 52, can reduce material usage, reduce structural weight, and improve power generation efficiency.

[0042] Meanwhile, the consistent shape and size of the sub-blades 52 along the axial direction of the rotation axis 51 ensures the consistency of strength and stiffness of the sub-blades 52 along the axial direction of the rotation axis 51, thereby guaranteeing the stability and reliability of the structure. Furthermore, the consistent shape and size of the sub-blades 52 along the axial direction of the rotation axis 51 facilitates the rapid one-time molding of larger vertical axis wind turbine blades 5 using integrated molding methods such as extrusion. This allows for the rapid production of larger vertical axis wind turbine blades 5 at extremely low production costs, thereby increasing the power generation of the floating wind turbine and further improving the construction efficiency of the floating wind turbine and the popularization rate of clean energy.

[0043] Preferably, the sub-blade 52 is arc-shaped along the diameter direction of the rotation axis 51.

[0044] This configuration can improve the wind energy conversion efficiency of the vertical axis wind turbine blades 5 to a certain extent, thereby increasing wind energy utilization. It also improves the strength and rigidity of the integrally formed sub-blades 52, thus enhancing the structural reliability of the vertical axis wind turbine blades 5 and reducing the operating and maintenance costs of the floating wind turbine.

[0045] Preferably, the transmission assembly 4 further includes at least one external transmission interface 6 for transmitting the transmission of at least two of the vertical axis wind turbine blades 5 or at least two of the floating wind turbines.

[0046] Specifically, the external transmission interface can be a synchronous pulley, belt pulley, sprocket, gear, drive shaft, or other transmission structure. The external transmission interface 6 can be connected to the vertical axis wind turbine blade 5. For example, if the transmission structure of the external transmission interface 6 is fixedly set at one end of the vertical axis wind turbine blade 5, at least two vertical axis wind turbine blades 5 can be connected to each other, so that at least two vertical axis wind turbine blades 5 rotate simultaneously and at the same speed, driving the same generator 3. This reduces the speed impact of local gusts on a single vertical axis wind turbine blade 5, improves the service life of the floating wind turbine, and also increases the windward area of ​​the blades of the floating wind turbine. Thus, by using the external transmission interface 6 to connect at least two vertical axis wind turbine blades 5, the overall wind energy capture of the floating wind turbine is increased, and the wind power generation is increased.

[0047] Correspondingly, the external transmission interface 6 can also be connected to the transmission component 4. For example, if the transmission structure of the external transmission interface 6 is fixedly set outside the transmission shaft, the above-mentioned technical effects can also be achieved, which will not be elaborated here.

[0048] The external transmission interface 6 can also be configured to connect at least two floating wind turbines. Furthermore, by scientifically and rationally distributing the floating wind turbines in a matrix, the overall wind energy capture of the at least two floating wind turbines connected via the external transmission interface 6 can be increased, thereby increasing wind power generation.

[0049] Preferably, the external transmission interface 6 is a transmission shaft assembly, at least one end of which is a universal joint structure for transmission connection with the external vertical axis wind turbine blade 5 or the floating wind turbine generator.

[0050] Specifically, such as Figure 4 and 5As shown, since the base 1 floats on the water surface, the position of the floating wind turbine cannot be completely fixed. Furthermore, due to the undulating water surface, the tilt angle of each floating wind turbine is not exactly the same at any given moment. Therefore, to ensure the transmission stability and reliability of the external transmission interface 6, simplify the transmission structure, and improve structural strength, a transmission shaft assembly is used to connect and transmit power between the floating wind turbines. One end of the transmission shaft assembly is connected to the transmission shaft in the transmission assembly 4 via a gear set, and the other end is connected to the universal joint structure of the external transmission interface 6 of other floating wind turbines via a universal joint structure. This achieves both a simple, stable, and reliable connection between two or more floating wind turbines and stable transmission when two or more floating wind turbines are at different tilt angles.

[0051] Preferably, the external transmission interface 6 further includes a positioning component 7 for fixing the relative positions of at least two vertical axis wind turbine blades 5 or at least two floating wind turbines that are connected to each other in a transmission manner.

[0052] Specifically, such as Figure 4 and 5 As shown, at least one of the external transmission interfaces 6 can rotate around the rotation axis 51 of the vertical axis wind turbine blade 5. This arrangement facilitates the transmission connection of other floating wind turbines distributed around the floating wind turbine through the external transmission interface 6. However, in order to maintain the relative position of the two floating wind turbines connected by the external transmission interface 6 and prevent the anchor chains 2 used to fix the floating wind turbines from tangling, a positioning component 7 for positioning the external transmission interface 6 is also provided at the relative position between the base 1 and the external transmission interface 6. The positioning component 7 can be a positioning component 7 with a fixed interval angle, such as bolts and nuts, which requires manual adjustment and is used for tight positioning. Alternatively, it can be a positioning component 7 that uses an electromagnetic adsorption structure for stepless adjustment and adsorption fastening. This arrangement ensures that the floating wind turbines connected by the external transmission interface 6 are fixed in position to each other, preventing them from floating randomly under the action of wind and water flow, and avoiding entanglement and damage to the fixing anchor chains 2, thereby improving the structural reliability of the floating wind turbine.

[0053] Preferably, the external transmission interface 6 further includes an angle adjustment component, which is used to adjust the relative positions of at least two vertical axis wind turbine blades 5 or at least two floating wind turbines that are connected to each other in a transmission manner.

[0054] Specifically, such as Figure 5 and Figure 6As shown, a floating wind turbine includes two external transmission interfaces 6. At least one of the two transmission interfaces 6 can rotate around the rotation axis 51 of the vertical axis wind turbine blade 5 under the drive of the angle adjustment component. The angle adjustment component can be a drive gear ring structure, which is coaxially arranged with the rotation axis of the external transmission interface 6. One of the external transmission interfaces 6 is fixed at a point on the drive gear ring. The drive gear ring rotates under the drive of a drive motor, driving the external transmission interface 6 fixed at its point to rotate, thereby realizing the angle adjustment between the two external transmission interfaces 6. By adjusting the angle between the external transmission interfaces 6, multiple combined floating wind turbines can be arranged in a straight line along the wind direction during strong winds, so as to minimize the windward area of ​​the multiple combined floating wind turbines and reduce the degree of damage to the floating wind turbines caused by strong winds. Meanwhile, in weak wind conditions, multiple floating wind turbines can be arranged into a triangle with openings facing the wind direction to maximize wind energy capture and increase the total power generation of the multiple floating wind turbines.

[0055] Preferably, the generator 3 and the transmission assembly 4 are fixedly positioned relative to the base 1, and the vertical axis fan blade 5 is movably connected to one end of the transmission assembly 4.

[0056] Specifically, such as Figures 7-10 As shown, the vertical axis wind turbine blades 5 can move up and down on the transmission shaft in the transmission assembly 4 under the action of the lifting assembly 8. This allows the floating wind turbine to capture high-altitude wind energy and increase wind power generation by raising the vertical axis wind turbine blades 5 when the low-altitude wind force is small. At the same time, when the high-altitude wind force is large, the floating wind turbine can be protected by partially or completely lowering the vertical axis wind turbine blades 5, thereby improving the service life of the floating wind turbine.

[0057] The lifting assembly 8 can be a hydraulic lifting assembly, a connecting rod lifting assembly, a pulley lifting assembly, a rope traction lifting assembly, a gear and rack lifting assembly, a worm gear lifting assembly, an electromagnetic lifting assembly (linear motor), or other linear lifting assemblies. There is no limitation on these assemblies, as long as they can achieve the lifting function of the vertical axis fan blades 5.

[0058] More preferably, the floating wind turbine may further include an end cover 9, which may be disposed at the upper and lower ends of the vertical axis wind turbine blade 5. The end cover 9 is used to seal the opening of the base 1 when the vertical axis wind turbine blade 5 is raised and / or lowered, so as to prevent rainwater, lake water, river water, seawater, dust or animals such as birds from entering the interior of the base 1 and affecting the normal operation of the floating wind turbine. This improves the reliability of the floating wind turbine, reduces the maintenance cost of the floating wind turbine, and increases the service life of the floating wind turbine.

[0059] In another preferred embodiment, the floating wind turbine further includes a lifting assembly 8 and a generator base. The generator base is movable relative to the base 1 via the lifting assembly 8. The generator 3, the transmission assembly 4, and the vertical axis wind turbine blades 5 are fixedly positioned relative to the generator base.

[0060] Specifically, one end of the lifting assembly 8 in the floating wind turbine is fixedly connected to the base 1, and the other end is fixedly connected to the generator base. The generator 3, the transmission assembly 4, and the vertical axis turbine blades 5 are all fixed in relative position to the generator base. When the low-altitude wind force is small, the generator base is raised by the lifting assembly 8, thereby raising the vertical axis turbine blades 5, enabling the floating wind turbine to capture high-altitude wind energy and increase wind power generation. At the same time, when the high-altitude wind force is large, the generator base can be lowered by the lifting assembly 8, thereby lowering the generator 3, transmission assembly 4, and vertical axis turbine blades 5 together, better protecting the structure of the floating wind turbine, thus increasing its service life. It also lowers the overall structural center of gravity of the floating wind turbine, improving its stability under high wind forces.

[0061] Preferably, the rotating shaft 51 is a rotating shaft mounting through hole, and at least one cross-section of the rotating shaft mounting through hole is non-circular, for transmission connection with one end of the transmission component 4 passing through it.

[0062] Specifically, the rotating shaft 51 is a through hole for shaft mounting, which facilitates the extrusion molding of the integral blade. At the same time, the central through hole of the vertical axis fan blade 5 also helps to reduce the amount of processing material and reduce the processing and manufacturing cost. Compared with the rotating shaft 51 being a solid structure, the vertical axis fan blade 5 has higher strength, rigidity and longer service life under the same material usage.

[0063] The rotating shaft 51 can have all non-circular cross sections in the mounting through holes, which facilitates the one-time extrusion molding of the vertical axis fan blades 5. By setting a rotating shaft with a cross section corresponding to the mounting through holes, the transmission connection between the vertical axis fan blades 5 and the transmission assembly 4 is realized, resulting in low processing costs.

[0064] Optionally, the shaft mounting through hole of the rotating shaft center 51 can be made circular in all cross sections during extrusion molding, which facilitates the one-time extrusion molding of the vertical axis fan blade 5. Subsequently, at least one non-circular cross section can be processed by secondary processing at one or both ends of the shaft mounting through hole of the rotating shaft center 51. Then, by setting the rotating shaft 32 corresponding to the non-circular cross section of the shaft mounting through hole, the transmission connection between the integrated blade and the transmission component 4 can be realized. The processing accuracy is high, which reduces the overall processing accuracy requirements of the vertical axis fan blade 5 and the rotating shaft, thereby reducing the processing cost.

[0065] Preferably, at least one end of the vertical axis fan blade 5 is provided with a groove or through hole around the rotation axis 51 for transmission connection with one end of the transmission assembly 4 to transmit the rotational torque of the vertical axis fan blade 5.

[0066] Specifically, the rotating shaft 51 can be a solid rotating shaft or a circular cross-section through hole, but at least one end of the vertical axis fan blade 5 is provided with at least one groove or through hole around the rotating shaft 51, which is used to cooperate with the protrusions provided around the transmission shaft of the transmission assembly 4 to realize the transmission connection between the integrated blade and the transmission assembly and transmit the rotational torque of the vertical axis fan blade 5.

[0067] The specific embodiments of this utility model have been described in detail above, but they are only examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model should be covered within the scope of this utility model.

Claims

1. A floating wind turbine generator, characterized in that, It includes a floating base (1), at least one anchor chain (2), a generator (3), a transmission assembly (4), and vertical axis fan blades (5), wherein, The base (1) is floating on the water surface and is fixed in relative position by at least one anchor chain (2). The base (1) is used to fix the generator (3). The generator (3) is connected to the vertical axis fan blade (5) through the transmission assembly (4). The vertical axis fan blade (5) includes a rotating axis (51) and at least two evenly distributed sub-blades (52). The vertical axis fan blade (5) rotates around its rotating axis (51) under the action of wind force, and drives the generator (3) to rotate through the transmission assembly (4) to generate electrical energy.

2. The floating wind turbine generator as described in claim 1, characterized in that, The transmission assembly (4) also includes at least one external transmission interface (6) for transmitting at least two of the vertical axis wind turbine blades (5) or at least two of the floating wind turbines.

3. The floating wind turbine generator as described in claim 2, characterized in that, The external transmission interface (6) is a transmission shaft assembly, at least one end of which is a universal joint structure for transmission connection with the external vertical axis wind turbine blade (5) or the floating wind turbine generator.

4. The floating wind turbine generator as described in claim 2, characterized in that, The external transmission interface (6) also includes a positioning component (7) for fixing the relative positions of at least two vertical axis wind turbine blades (5) or at least two floating wind turbines that are connected to each other in a transmission manner.

5. The floating wind turbine generator as described in claim 2, characterized in that, The external transmission interface (6) also includes an angle adjustment component, which is used to adjust the relative positions of at least two vertical axis wind turbine blades (5) or at least two floating wind turbines that are connected to each other.

6. The floating wind turbine generator as described in claim 1, characterized in that, The rotating shaft (51) and the sub-blade (52) are integrally formed. The number of sub-blades (52) is 3, and their shape and size are consistent along the axial direction of the rotating shaft (51).

7. The floating wind turbine generator as described in claim 6, characterized in that, The sub-blade (52) is arc-shaped along the diameter direction of the rotation axis (51).

8. The floating wind turbine generator as described in claim 1, characterized in that, The transmission component (4) includes at least one of shaft drive, chain drive, belt drive, gear drive, magnetic coupling drive, and hydraulic drive. One end is connected to the vertical axis fan blade (5) and the other end is connected to the input shaft of the generator (3).

9. The floating wind turbine generator as described in claim 1, characterized in that, The generator (3) and the transmission assembly (4) are fixedly positioned relative to the base (1), and the vertical axis fan blade (5) is movably connected to one end of the transmission assembly (4).

10. The floating wind turbine generator as described in any one of claims 1 to 9, characterized in that, The rotating shaft (51) is a shaft mounting through hole, at least one cross-section of which is non-circular, for transmission connection with one end of the transmission assembly (4) passing through it; or, At least one end of the vertical axis fan blade (5) is provided with a groove or through hole around the rotation axis (51) for transmission connection with one end of the transmission assembly (4) to transmit the rotational torque of the vertical axis fan blade (5).

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