Floating vertical axis fans and their control methods

Abstract

This invention provides a floating vertical axis fan and a control method for it. The floating vertical axis fan includes: a floating body assembly comprising an outer floating body and an inner floating body; a power generation assembly comprising a frame, fan blades, and a power generation device, wherein the inner floating body is connected to the frame, the fan blades are mounted on the frame, and the power generation device is positioned between the inner and outer floating bodies; and a first protective assembly comprising a first driving member and a moving member, wherein the first driving member is mounted within the inner floating body, and the moving member is movably mounted, the first driving member being drivenly connected to the moving member. When the moving member is in the extended position, it rotates synchronously with the inner floating body, and the moving member contacts the external liquid of the floating vertical axis fan to reduce the rotational speed of the inner floating body. The technical solution provided in this application solves the problem in related technologies where excessive rotational speed leads to increased wear on fan components and a greater external load on the fan, affecting its structural lifespan and safety performance.

Description

Technical Field

[0001] This invention relates to the field of wind power equipment technology, and more specifically, to a floating vertical axis wind turbine and a control method for the floating vertical axis wind turbine. Background Technology

[0002] As a green and renewable energy source, wind energy is being increasingly developed and utilized. The focus of the wind power industry is gradually shifting from onshore to offshore, with the vast deep sea holding enormous potential for wind energy development. Deep-sea and large-scale development are the main directions for current offshore wind power development. Floating vertical axis wind turbines are an offshore wind power technology that combines the technologies of vertical axis wind turbines and floating platforms, thus ensuring the realization of offshore wind power generation.

[0003] In related technologies, within a certain range where the wind speed is greater than the maximum operating wind speed, the deceleration of vertical axis fans is mainly achieved by increasing torque to suppress the increase in rotational speed.

[0004] However, if the rotation speed is too high, it will lead to increased wear on various components of the wind turbine, and will also bring greater external load to the wind turbine, affecting the structural life and safety performance of the wind turbine. Summary of the Invention

[0005] This invention provides a floating vertical axis fan and a control method for the floating vertical axis fan, in order to solve the problem in related technologies that if the rotation speed is too high, it will lead to increased wear on various components of the fan, and will also bring a larger external load to the fan, affecting the structural life and safety performance of the fan.

[0006] According to one aspect of the present invention, a floating vertical axis fan is provided, comprising: a float assembly including a fixedly disposed outer float and an inner float rotatably disposed within the outer float; a power generation assembly including a frame, fan blades, and a power generation device, wherein the inner float is connected to the frame, the fan blades are disposed on the frame, and the power generation device is disposed between the inner float and the outer float; and a first protective assembly including a first drive member and a moving member, wherein the first drive member is disposed within the inner float, and the moving member is movably disposed radially along the inner float and located below the outer float, the first drive member and the moving member being drivenly connected such that the moving member has an extended position extending out of the inner float and a retracted position retracted within the inner float, wherein when the moving member is in the extended position, and the moving member rotates synchronously with the inner float, the moving member contacts the external liquid of the floating vertical axis fan to reduce the rotational speed of the inner float.

[0007] Furthermore, the inner float is provided with a receiving cavity for accommodating the movable part, and the side wall of the inner float has a mounting through hole that communicates with the receiving cavity. The movable part can be inserted through the mounting through hole so that the movable part can switch between a retracted position and an extended position.

[0008] Furthermore, the first driving component includes a first hydraulic cylinder, the cylinder body of which is disposed within the receiving cavity, the piston rod of which is connected to the moving component, and the piston rod of which is movably disposed along the radial direction of the inner float; the moving component includes a moving plate, and a sealing element is provided between the moving plate and the inner float to seal the receiving cavity.

[0009] Furthermore, the sealing element includes a sealing ring, which is disposed within the mounting through hole, and the moving plate passes through the sealing ring; the first driving element includes two first hydraulic cylinders, which are respectively disposed at the upper and lower ends of the moving plate, and the piston rods of the two first hydraulic cylinders are connected to the moving plate.

[0010] Furthermore, the first protective component includes multiple first driving elements and multiple moving elements. The multiple first driving elements are arranged at intervals along the circumference of the inner float, and the multiple first driving elements and multiple moving elements are arranged in a one-to-one correspondence.

[0011] Furthermore, a second protective component is provided on the wind turbine blade. The second protective component includes a second driving component and a protective component. The second driving component is disposed inside the wind turbine blade, and the protective component is rotatably disposed on the wind turbine blade. The second driving component is driven to rotate relative to the wind turbine blade, thereby creating an angle between the protective component and the wind turbine blade and reducing the rotational speed of the wind turbine blade.

[0012] Furthermore, the second driving component includes a second hydraulic cylinder, and the protective component includes a protective plate. The first side of the protective plate is rotatably mounted on the fan blade, and the piston rod of the second hydraulic cylinder is connected to the second side opposite to the first side of the protective plate, so that there is an angle between the protective plate and the fan blade.

[0013] Furthermore, the power generation assembly includes multiple wind turbine blades, which are spaced apart along the circumferential direction of the frame, and each wind turbine blade is equipped with a second protective component; the power generation assembly also includes multiple blade supports, the first side of which is connected to the frame, and the multiple blade supports and the multiple wind turbine blades are respectively arranged on the second side opposite to the first side of the blade support.

[0014] Furthermore, the power generation component includes a rotor and a stator. The rotor is mounted on an inner float, and the stator is mounted on an outer float. The outer float has a connecting hole, and the inner float passes through the connecting hole. The stator is mounted on the wall of the connecting hole, and the rotor is mounted on the outer wall of the inner float.

[0015] Furthermore, the floating vertical axis wind turbine also includes a gravity anchor and a mooring rope. The first end of the mooring rope is connected to the outer floating body, and the second end of the mooring rope is connected to the gravity anchor.

[0016] According to another aspect of the present invention, a control method for a floating vertical axis fan is provided for controlling the aforementioned floating vertical axis fan. The control method includes: detecting the rotational speed of the fan blades; when the detected rotational speed of the fan blades is greater than or equal to a first preset value and less than a second preset value, controlling a movable component to switch to an extended position, while a protective component remains in an initial position; when the detected rotational speed of the fan blades is greater than or equal to the second preset value, controlling the movable component to remain in the extended position, while the protective component rotates relative to the fan blades; when the detected rotational speed of the fan blades is less than the first preset value, controlling the movable component to switch to a retracted position, while the protective component remains in the initial position.

[0017] According to the technical solution of this invention, the floating vertical axis wind turbine includes a floating body assembly, a power generation assembly, and a first protective assembly. The floating body assembly includes an outer floating body and an inner floating body. The outer floating body can float on the water surface, and the inner floating body is rotatably disposed within the outer floating body. The frame of the power generation assembly is connected to the inner floating body. The wind turbine blades are disposed on the frame, and the power generation unit is disposed between the inner and outer floating bodies. The wind force on the sea surface drives the wind turbine blades to rotate, which in turn drives the frame to rotate. Since the frame is connected to the inner floating body, the inner floating body rotates together with the frame, thereby ensuring that the generator generates electricity. This converts wind energy into electrical energy through the power generation assembly and stores it in the generator, improving energy utilization efficiency. To prevent the generator from overloading and damaging itself due to high wind speeds, a first drive unit is installed inside the inner float. A movable component is movably positioned below the outer float along the radial direction of the inner float. The first drive unit is driven by the movable component, allowing it to extend or retract into the inner float. When the movable component extends, it rotates synchronously with the inner float, increasing rotational resistance by contacting the external liquid and reducing the inner float's rotational speed. This prevents the generator from overloading and being damaged due to excessively high inner float speeds. When the wind speed is low, the first drive unit retracts the movable component into the inner float, ensuring the conversion of wind energy into electrical energy and storing it within the generator, thus improving the practicality and structural reliability of the floating vertical axis wind turbine. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of a floating vertical axis fan provided according to an embodiment of the present invention is shown;

[0020] Figure 2A schematic diagram of a first protective component provided according to an embodiment of the present invention disposed within an inner buoy body is shown;

[0021] Figure 3 A schematic diagram of a first protective component provided according to an embodiment of the present invention is shown;

[0022] Figure 4 A schematic diagram of a first protective component provided according to an embodiment of the present invention disposed within an inner buoy body is shown from another perspective.

[0023] The above figures include the following reference numerals:

[0024] 10. Floating body assembly; 11. Inner floating body; 12. External floating body;

[0025] 20. Power generation components; 21. Frame; 22. Wind turbine blades; 23. Blade support;

[0026] 30. First protective component; 31. First driving component; 311. First hydraulic cylinder; 32. Moving component; 321. Moving plate;

[0027] 41. Gravity anchor; 42. Mooring rope. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 4As shown, this embodiment of the invention provides a floating vertical axis fan, which includes a float assembly 10, a power generation assembly 20, and a first protective assembly 30. The float assembly 10 includes a fixedly disposed outer float 12 and an inner float 11 rotatably disposed within the outer float 12. The power generation assembly 20 includes a frame 21, fan blades 22, and a power generation component. The inner float 11 is connected to the frame 21, the fan blades 22 are disposed on the frame 21, and the power generation component is disposed between the inner float 11 and the outer float 12. The first protective assembly 30 includes a first protective assembly 30. A first driving member 31 and a moving member 32 are provided. The first driving member 31 is disposed inside the inner float 11. The moving member 32 is movably disposed along the radial direction of the inner float 11 and located below the outer float 12. The first driving member 31 and the moving member 32 are drivenly connected so that the moving member 32 has an extended position extending out of the inner float 11 and a retracted position stored in the inner float 11. When the moving member 32 is in the extended position, when the moving member 32 rotates synchronously with the inner float 11, the moving member 32 contacts the liquid outside the floating vertical axis fan to reduce the rotational speed of the inner float 11.

[0030] The floating vertical axis wind turbine provided in this embodiment includes a floating body assembly 10, a power generation assembly 20, and a first protective assembly 30. The floating body assembly 10 includes an outer floating body 12 and an inner floating body 11. The outer floating body 12 can float on the water surface, and the inner floating body 11 is rotatably disposed inside the outer floating body 12. The frame 21 of the power generation assembly 20 is connected to the inner floating body 11. The wind turbine blades 22 are disposed on the frame 21, and the power generation unit is disposed between the inner floating body 11 and the outer floating body 12. The wind force on the sea surface drives the wind turbine blades 22 to rotate, and the wind turbine blades 22 drive the frame 21 to rotate. Since the frame 21 is connected to the inner floating body 11, the inner floating body 11 rotates together with the frame 21, thereby ensuring that the generator generates electricity. The wind energy is converted into electrical energy through the power generation assembly 20 and stored in the generator, thereby improving the energy utilization rate. To prevent the generator from overloading and damaging itself due to high wind speeds, a first drive unit 31 is installed inside the inner float 11. A movable part 32 is movably positioned below the outer float 12 along the radial direction of the inner float 11. The first drive unit 31 and the movable part 32 are driven together, allowing the first drive unit 31 to drive the movable part 32 to extend out of or retract into the inner float 11. When the movable part 32 is extended, it rotates synchronously with the inner float 11, contacting the external liquid to increase rotational resistance and reduce the rotational speed of the inner float 11, thus preventing overloading and damage to the generator. When the wind speed is low, the first drive unit 31 drives the movable part 32 to retract into the inner float 11, ensuring that wind energy is converted into electrical energy and stored within the generator, thereby improving the practicality and structural reliability of the floating vertical axis wind turbine.

[0031] like Figures 1 to 4 As shown, the inner float 11 has a receiving cavity for accommodating the movable member 32. The side wall of the inner float 11 has a mounting through hole communicating with the receiving cavity. The movable member 32 can pass through the mounting through hole, allowing it to switch between a retracted position and an extended position. With this structure, the inner float 11 has a receiving cavity, and the side wall of the inner float 11 has a mounting through hole communicating with the receiving cavity. The movable member 32 is disposed within the receiving cavity and can pass through the mounting through hole. Therefore, when the movable member 32 is in the extended position, it passes through the mounting through hole and extends out of the inner float 11, allowing it to contact the external liquid, thus increasing resistance and preventing overloading of the generator. Furthermore, the first driving member 31 can drive the movable member 32 to be retracted into the receiving cavity, ensuring the movable member 32 is in the retracted position and improving the structural reliability of the movable member 32.

[0032] like Figure 2 and Figure 3 As shown, the first driving component 31 includes a first hydraulic cylinder 311. The cylinder body of the first hydraulic cylinder 311 is disposed within the receiving cavity, and the piston rod of the first hydraulic cylinder 311 is connected to the moving component 32. The piston rod of the first hydraulic cylinder 311 is movably disposed along the radial direction of the inner float 11. With this structure, by providing the first hydraulic cylinder 311 within the receiving cavity, fixing the cylinder body of the first hydraulic cylinder 311 within the receiving cavity, and connecting the piston rod of the first hydraulic cylinder 311 to the moving component 32, the first hydraulic cylinder 311 can drive the piston rod to move, thereby causing the moving component 32 to move and retract, ensuring that the moving component 32 can stably switch between the extended position and the retracted position.

[0033] like Figure 2 and Figure 3 As shown, the movable member 32 includes a movable plate 321, and a sealing element is provided between the movable plate 321 and the inner float 11 to seal the receiving cavity. With the above structure, the sealing element provided between the movable plate 321 and the inner float 11 can ensure that the receiving cavity is sealed when the movable member 32 moves, preventing external liquid from entering the receiving cavity.

[0034] In this embodiment, the sealing element includes a sealing ring, which is disposed within the mounting through hole, and the movable plate 321 passes through the sealing ring. The sealing ring, disposed within the mounting through hole, can seal against the movable plate 321, thus preventing external liquid from entering the receiving cavity when the movable plate 321 moves.

[0035] like Figure 2 and Figure 3 As shown, the first driving component 31 includes two first hydraulic cylinders 311, which are respectively disposed at the upper and lower ends of the moving plate 321. The piston rods of both first hydraulic cylinders 311 are connected to the moving plate 321. With the above structure, two first hydraulic cylinders 311 are arranged in the receiving cavity. One of the two first hydraulic cylinders 311 is connected to the upper end of the moving plate 321, and the other of the two first hydraulic cylinders 311 is connected to the lower end of the moving plate 321. This ensures the structural stability of the extended moving component 32 under the action of the two first hydraulic cylinders 311.

[0036] like Figures 2 to 4As shown, the first protective component 30 includes multiple first driving elements 31 and multiple moving elements 32. The multiple first driving elements 31 are arranged at intervals along the circumference of the inner float 11, and the multiple first driving elements 31 and multiple moving elements 32 are arranged in a one-to-one correspondence. With the above structure, by setting multiple first driving elements 31 and multiple moving elements 32, and ensuring that the multiple first driving elements 31 and multiple moving elements 32 are arranged in a one-to-one correspondence, it is possible to ensure that when the moving elements 32 extend out of the inner float 11, the resistance is further increased, ensuring that the multiple moving elements 32 are in contact with the external liquid, thus preventing the generator from being overloaded.

[0037] In this embodiment, a second protective component is provided on the wind turbine blade 22. The second protective component includes a second driving member and a protective member. The second driving member is disposed inside the wind turbine blade 22, and the protective member is rotatably disposed on the wind turbine blade 22. The second driving member is driven to rotate relative to the wind turbine blade 22, thereby creating an angle between the protective member and the wind turbine blade 22 and reducing the rotational speed of the wind turbine blade 22. With the above structure, by providing a second driving member on the wind turbine blade 22, the second driving member can drive the protective member to rotate on the wind turbine blade 22, thereby enabling the protective member to rotate relative to the wind turbine blade 22. This creates an angle between the protective member and the wind turbine blade 22, ensuring that the protective member can reduce the rotational speed of the wind turbine blade 22 and also preventing the generator from being overloaded due to excessive rotational speed of the inner float 11.

[0038] In this embodiment, the second driving component includes a second hydraulic cylinder, and the protective component includes a protective plate. A first side of the protective plate is rotatably mounted on the fan blade 22. The piston rod of the second hydraulic cylinder is connected to a second side opposite to the first side of the protective plate, creating an angle between the protective plate and the fan blade 22. Using this structure, the second hydraulic cylinder drives the protective plate to rotate on the fan blade 22, thereby ensuring that the protective plate can reduce the rotational speed of the fan blade 22.

[0039] like Figure 1 As shown, the power generation component 20 includes multiple wind turbine blades 22, which are spaced apart along the circumferential direction of the frame 21. Each wind turbine blade 22 is equipped with a second protective component. With this structure, by arranging multiple wind turbine blades 22 spaced apart along the circumferential direction of the frame 21, and each wind turbine blade 22 equipped with a second protective component, the conversion of wind energy into electrical energy can be ensured under the action of the multiple wind turbine blades 22, while also providing protection for the power generation component.

[0040] like Figure 1As shown, the power generation assembly 20 also includes multiple blade supports 23. The first side of each blade support 23 is connected to the frame 21, and the multiple blade supports 23 are respectively arranged on the second side opposite to the first side of the blade support 23. By adopting the above structure and setting multiple blade supports 23, the wind turbine blades 22 can be mounted on the blade supports 23, which can improve the structural strength of the power generation assembly 20.

[0041] In this embodiment, the power generation device includes a rotor and a stator. The rotor is mounted on an inner float 11, and the stator is mounted on an outer float 12. The outer float 12 has a connecting hole, and the inner float 11 passes through the connecting hole. The stator is mounted on the wall of the connecting hole, and the rotor is mounted on the outer wall of the inner float 11. With this structure, the rotor is mounted on the inner float 11, and the stator is mounted on the outer float 12. Because the inner float 11 passes through the connecting hole of the outer float 12, the rotor can rotate relative to the stator, thereby ensuring that the power generation device can store electrical energy.

[0042] like Figure 1 As shown, the floating vertical axis wind turbine also includes a gravity anchor 41 and a mooring rope 42. The first end of the mooring rope 42 is connected to the outer float 12, and the second end of the mooring rope 42 is connected to the gravity anchor 41. Using this structure, by connecting the first end of the mooring rope 42 to the outer float 12 and the second end of the mooring rope 42 to the gravity anchor 41, the floating vertical axis wind turbine can be secured.

[0043] Another embodiment of the present invention provides a control method for a floating vertical axis fan, used to control the above-mentioned floating vertical axis fan, the control method comprising:

[0044] Detect the rotational speed of fan blade 22;

[0045] When the detected rotational speed of the fan blade 22 is greater than or equal to the first preset value and less than the second preset value, the control moving part 32 switches to the extended position, and the protective part remains in the initial position.

[0046] When the detected rotational speed of the fan blade 22 is greater than or equal to the second preset value, the control moving part 32 is kept in the extended position and the protective part rotates relative to the fan blade 22.

[0047] When the detected rotational speed of the fan blade 22 is less than the first preset value, the control moving part 32 switches to the storage position, while the protective part remains in the initial position.

[0048] Using the above steps, the rotational speed of the fan blades 22 is detected. When the detected rotational speed of the fan blades 22 is greater than a first preset value but less than a second preset value, the first driving component 31 drives the moving component 32 to switch from the retracted position to the extended position, allowing the moving component 32 to contact the external liquid, increasing resistance and reducing the rotational speed of the inner float 11. Meanwhile, the protective component on the fan blades 22 remains in its initial position. When the detected rotational speed of the fan blades 22 is greater than or equal to the second preset value, the moving component 32 is controlled to remain in the extended position, and the second driving component drives the protective component... The protective component rotates relative to the wind turbine blade 22, creating an angle between the protective component and the wind turbine blade 22. This further increases the resistance to the rotation of the wind turbine blade 22, reduces the rotational speed of the frame 21 and the inner floating body 11, and prevents the generator from being overloaded. When the rotational speed of the wind turbine blade 22 is detected to be less than the first preset value, the moving component 32 is controlled to switch to the storage position, while the protective component remains in the initial position. This ensures that the wind turbine blade 22 can rotate and convert wind energy into electrical energy stored in the generator, thereby improving the practicality and structural reliability of the floating vertical axis wind turbine.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0051] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A floating vertical axis fan, characterized in that, The floating vertical axis fan includes: The float assembly (10) includes a fixedly disposed outer float (12) and an inner float (11) rotatably disposed within the outer float (12); The power generation component (20) includes a frame (21), wind turbine blades (22) and a power generation device. The inner floating body (11) is connected to the frame (21), the wind turbine blades (22) are disposed on the frame (21), and the power generation device is disposed between the inner floating body (11) and the outer floating body (12). The first protective component (30) includes a first driving member (31) and a moving member (32). The first driving member (31) is disposed inside the inner float (11). The moving member (32) is movably disposed radially along the inner float (11) and located below the outer float (12). The first driving member (31) and the moving member (32) are drivenly connected so that the moving member (32) has an extended position extending out of the inner float (11) and a retracted position retracted inside the inner float (11). When the moving member (32) is in the extended position, when the moving member (32) rotates synchronously with the inner float (11), the moving member (32) contacts the liquid outside the floating vertical axis fan to reduce the rotational speed of the inner float (11).

2. The floating vertical axis fan according to claim 1, characterized in that, The inner float (11) is provided with a receiving cavity for accommodating the movable member (32). The side wall of the inner float (11) has a mounting through hole that communicates with the receiving cavity. The movable member (32) can pass through the mounting through hole so that the movable member (32) can switch between the storage position and the extended position.

3. The floating vertical axis fan according to claim 2, characterized in that, The first driving member (31) includes a first hydraulic cylinder (311), the cylinder body of the first hydraulic cylinder (311) is disposed in the receiving cavity, the piston rod of the first hydraulic cylinder (311) is connected to the moving member (32), and the piston rod of the first hydraulic cylinder (311) is movably disposed along the radial direction of the inner float (11). The movable component (32) includes a movable plate (321) and a seal is provided between the movable plate (321) and the inner float (11) to seal the receiving cavity.

4. The floating vertical axis fan according to claim 3, characterized in that, The sealing element includes a sealing ring, which is disposed in the mounting through hole, and the movable plate (321) passes through the sealing ring; The first driving component (31) includes two first hydraulic cylinders (311), which are respectively disposed at the upper and lower ends of the moving plate (321), and the piston rods of the two first hydraulic cylinders (311) are connected to the moving plate (321).

5. The floating vertical axis fan according to any one of claims 1 to 4, characterized in that, The first protective component (30) includes a plurality of first driving members (31) and a plurality of moving members (32). The plurality of first driving members (31) are arranged at intervals along the circumference of the inner float (11), and the plurality of first driving members (31) and the plurality of moving members (32) are arranged in a one-to-one correspondence.

6. The floating vertical axis fan according to any one of claims 1 to 4, characterized in that, A second protective component is provided on the fan blade (22). The second protective component includes a second driving component and a protective component. The second driving component is disposed inside the fan blade (22), and the protective component is rotatably disposed on the fan blade (22). The second driving component is driven to be connected to the protective component, driving the protective component to rotate relative to the fan blade (22) so that there is an angle between the protective component and the fan blade (22), thereby reducing the rotational speed of the fan blade (22).

7. The floating vertical axis fan according to claim 6, characterized in that, The second driving component includes a second hydraulic cylinder, and the protective component includes a protective plate. The first side of the protective plate is rotatably disposed on the fan blade (22). The piston rod of the second hydraulic cylinder is connected to the second side opposite to the first side of the protective plate, so that there is the included angle between the protective plate and the fan blade (22).

8. The floating vertical axis fan according to claim 6, characterized in that, The power generation component (20) includes a plurality of wind turbine blades (22), which are spaced apart along the circumferential direction of the frame (21), and each wind turbine blade (22) is provided with the second protective component; The power generation component (20) also includes multiple blade supports (23), the first side of each of the multiple blade supports (23) is connected to the frame (21), and the multiple blade supports (23) and the multiple wind turbine blades (22) are respectively arranged on the second side opposite to the first side of the blade supports (23).

9. The floating vertical axis fan according to claim 1, characterized in that, The power generation device includes a rotor and a stator. The rotor is disposed on the inner float (11), the stator is disposed on the outer float (12), the outer float (12) is provided with a connecting hole, the inner float (11) passes through the connecting hole, the stator is disposed on the hole wall of the connecting hole, and the rotor is disposed on the outer wall of the inner float (11).

10. The floating vertical axis fan according to claim 1, characterized in that, The floating vertical axis wind turbine also includes a gravity anchor (41) and a mooring rope (42), the first end of which is connected to the outer floating body (12), and the second end of which is connected to the gravity anchor (41).

11. A control method for a floating vertical axis fan, characterized in that, The control method for controlling the floating vertical axis fan of claim 6 or 7 includes: Detect the rotational speed of the fan blades (22); When the detected rotational speed of the fan blade (22) is greater than or equal to the first preset value and less than the second preset value, the control moving part (32) switches to the extended position, and the protective part remains in the initial position; When the detected rotational speed of the fan blade (22) is greater than or equal to the second preset value, the control moving part (32) is kept in the extended position, and the protective part rotates relative to the fan blade (22); When the detected rotational speed of the fan blade (22) is less than the first preset value, the control moving part (32) switches to the storage position, and the protective part remains in the initial position.

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