A stabilizer for a floating vertical axis wind turbine and a method of installing the same

Abstract

This invention relates to the field of wind power generation technology, specifically to a floating vertical axis wind turbine anti-sway device and its installation method. The vertical axis wind turbine anti-sway device includes a vertical vibration damping system and a horizontal vibration damping system. The horizontal vibration damping system includes a rotating self-resetting spring, a translational self-resetting elastic rope assembly, a hollow bearing bushing, a cover plate, a steel ring, a screw, a nut, an upper-mounted hollow ring disc base, and pads. The translational self-resetting elastic rope assembly consists of four SMA ropes. The vertical vibration damping system includes a friction damping component, a circular base, and connecting parts. The friction damping component includes a cylinder, an inner sleeve, and a friction tooth block assembly, the friction tooth block assembly consisting of arc-shaped friction strips. The inner sleeve consists of four steel clamps. By coordinating the horizontal and vertical vibration damping systems, vibration control of the floating vertical axis wind turbine is achieved in six free directions, realizing fully passive control and improving the efficiency of vibration control.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a floating vertical axis wind turbine anti-sway device and its installation method. Background Technology

[0002] With the increasing global demand for clean energy, wind power, as a mature renewable energy technology, is playing an increasingly important role in the energy mix. Vertical axis wind turbines, with their unique advantages such as good low-wind-speed start-up performance and insensitivity to wind direction changes, are being used more and more widely in the wind power sector. However, with the continuous expansion of wind turbine scale, especially the development of offshore vertical axis wind turbines, the environmental loads and vibration problems they face are becoming increasingly complex and severe, making the need for anti-sway technology even more urgent.

[0003] Floating wind turbines, in addition to wind loads, must also withstand various environmental loads such as waves, currents, and typhoons. The periodic fluctuations of waves cause the turbine platform to experience pitching, rolling, and yaw movements, which are transmitted to the turbine body through the support structure, causing vibrations. Simultaneously, the scouring effect of ocean currents also affects the turbine's foundation, leading to uneven settlement and vibration, thus impacting the turbine's stability. Vertical axis wind turbines, in particular, differ from traditional horizontal axis wind turbines in that their main shaft is perpendicular to the ground, with blades rotating around it. This structure results in unique vibration modes when subjected to external excitations such as wind loads and waves, including torsional and bending vibrations. Furthermore, due to the higher center of gravity of vertical axis wind turbines, they generate significant inertial forces and restoring moments when tilting or swaying, further exacerbating the complexity of vibrations.

[0004] To address these issues, there is an urgent need for a sway reduction device for floating vertical axis wind turbines and its installation method. This device achieves six-degree-of-freedom sway control of the floating vertical axis wind turbine through the coordinated operation of a horizontal sway reduction system and a vertical vibration reduction system. This solution effectively solves the problem of difficult vibration control in floating vertical axis wind turbines. Summary of the Invention

[0005] In view of this, this application provides a floating vertical axis wind turbine anti-sway device and its installation method. Targeting the motion characteristics of the floating vertical axis wind turbine, a horizontal anti-sway system and a vertical vibration damping system are designed to work in tandem, controlling the vibration of the floating vertical axis wind turbine in six free directions. An automatic reset mechanism is used, achieving fully passive control and improving vibration control efficiency. Because the wind turbine rotates above the blades under wind load, it generates a large torque on the bottom; however, this invention effectively solves this problem. This invention has a relatively simple design, a high degree of modularity, and is easy to mass-produce, facilitating later maintenance and repair, and reducing long-term operating costs.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A floating vertical axis wind turbine anti-sway device includes a horizontal anti-sway system and a vertical vibration reduction system. The horizontal anti-sway system is located above the vertical vibration reduction system. The horizontal anti-sway system includes a rotating self-resetting spring, a translational self-resetting elastic rope group, a hollow seated bushing, a cover plate, a steel ring, and an upper-mounted hollow ring disc base. A hollow belt bushing is positioned at the center of an upper hollow ring-shaped base. A cover plate is located between the hollow belt bushing and the upper hollow ring-shaped base, covering the upper part of the upper hollow ring-shaped base. A self-resetting spring is positioned at the center of the hollow belt bushing, with one end connected to the inner wall of the hollow belt bushing and the other end welded to the upper hollow ring-shaped base. The vertical vibration damping system includes a friction damping assembly and a circular base. The friction damping assembly includes a cylinder, an inner sleeve, and a friction tooth block assembly. The circular base is welded to the lower part of the cylinder. The inner sleeve is located inside the cylinder, and the friction tooth block assemblies are respectively located on the outer wall of the inner sleeve and the inner wall of the cylinder. The friction tooth block assemblies on the inner side of the cylinder and the friction tooth block assemblies on the outer side of the inner sleeve are interleaved.

[0008] Furthermore, there are multiple steel rings, which are welded to the outer wall of the hollow bearing bush and the upper surface of the cover plate, respectively. The translational self-resetting elastic rope group is connected to each steel ring, and the hollow bearing bush and the cover plate are connected into a whole through the translational self-resetting elastic rope group.

[0009] Furthermore, there are eight steel rings. Four steel rings are welded to the outer wall of the hollow bearing bushing in the front, back, left, and right directions, and are named No. 1, No. 2, No. 3, and No. 4 respectively. The other four steel rings are welded to the upper front and back directions of the cover plate, and are named No. 5, No. 6, No. 7, and No. 8 respectively from front to back and from left to right. The translational self-resetting elastic rope group 4 consists of four SMA (shape memory alloy) ropes; one end of the first SMA rope is connected to No. 1. The first SMA rope is tied to the first SMA rope, then passes through steel rings 5 ​​and 7 in sequence, and finally ties to steel ring 2. The second SMA rope is symmetrically arranged with the first SMA rope, with both ends tied to steel rings 1 and 2, and then passes through steel rings 6 and 8 in sequence. The third SMA rope is tied to steel ring 3 at one end, then passes through steel rings 5 ​​and 6 in sequence, and finally ties to steel ring 4. The fourth SMA rope is symmetrically arranged with the third SMA rope, with both ends tied to steel rings 3 and 4, and then passes through steel rings 7 and 8 in sequence.

[0010] Furthermore, the cover plate is located at the position with the smaller outer diameter of the hollow bearing bush and there is a distance between them. Pads are placed on the upper and lower sides of the cover plate respectively, and the cover plate is bolted to the upper hollow ring-shaped base.

[0011] Furthermore, the hollow bushing with seat includes an upper bushing portion and a lower base portion. The bushing portion has a circular cross-sectional shape, and the base portion is stepped, having a large diameter portion and a small diameter portion. A central hole is provided in the center of the base portion. The inner diameter of the bushing portion is larger than the inner diameter of the central hole in the base portion. A rotational self-resetting spring is provided in the central hole of the base portion. The outer diameter of the rotational self-resetting spring is equal to the inner diameter of the central hole, and the height of the rotational self-resetting spring is equal to the height of the central hole.

[0012] Furthermore, the friction tooth block assembly is welded to the inner sleeve and cylinder; the friction tooth block assembly consists of multiple arc-shaped friction strips, the cross-sectional shape of which is trapezoidal, and the multiple arc-shaped friction strips are arranged horizontally with the distance between two being equal to the short side of the trapezoidal cross-section.

[0013] Furthermore, the circular base has a circular cross-sectional shape and is welded to the lower part of the cylinder.

[0014] Furthermore, the vertical vibration reduction system also includes a connector, which consists of a hollow plate and steel bars. The hollow plate has a circular cross-sectional shape and is used to connect with the upper hollow ring-shaped base of the horizontal sway reduction system. The steel bars are located below the hollow plate and have bolt holes.

[0015] Furthermore, the inner sleeve is composed of four steel clips with a U-shaped cross-section and corresponding bolt holes on the inner side. The four steel clips are connected together by steel bars to form the inner sleeve.

[0016] An installation method for a floating vertical axis wind turbine anti-sway device comprises the following steps: Step 1: Produce the corresponding components in the factory, weld the steel ring to the hollow seated bushing and cover plate, weld the circular base to the cylinder, weld the friction tooth block assembly to the steel clamp and cylinder, weld the hollow seated bushing to the upper hollow ring disc base, and weld the rotating self-resetting spring to the hollow seated bushing and the upper hollow ring disc base; Step 2: Assemble the horizontal anti-sway system, place the cover plate in the appropriate position, arrange the pads above and below, and bolt them to the upper hollow ring disc base; Step 3: Assemble the vertical vibration damping system, place the friction vibration damping assembly in the appropriate position, and connect them with bolts; Step 4: Connect the horizontal anti-sway system and the vertical vibration damping system together.

[0017] Compared with the prior art, the beneficial effects that the at least one technical solution adopted in the embodiments of this application can achieve include at least:

[0018] First, this invention has a self-rotation and self-resetting function. By connecting one end of the rotational self-resetting spring to the hollow bearing bushing and the other end to the upper hollow ring-shaped base in the horizontal anti-roll system, the rotational self-resetting spring has high elasticity and high resilience. This allows the vertical axis wind turbine anti-roll device to quickly and automatically return to its original state even if the hollow bearing bushing rotates under the action of the wind when facing eddies and vortices generated by the wind on the sea surface. This improves the stability of the wind turbine in complex wind environments and provides an effective guarantee for the long-term reliable operation of wind power generation equipment.

[0019] Secondly, this invention has a self-resetting function. By connecting the hollow bearing bush and the cover plate into a whole using a translational self-resetting elastic rope group in the horizontal anti-sway system, the translational self-resetting elastic rope group, composed of four SMA ropes, has high plastic deformation and recoverability. This allows the vertical axis wind turbine anti-sway device to quickly return the hollow bearing bush to the center position of the upper hollow ring disc base under the action of wind load and waves, thus achieving a better anti-sway effect, reducing the complex impact of load on the structure, and thereby greatly improving the safety performance of the structure.

[0020] Third, the present invention has a vertical vibration reduction self-resetting function. By setting a friction damping component in the vertical vibration reduction system, the main purpose is to solve the vibration problem of the wind turbine. Wind load and sea level vibration have a huge impact on the wind turbine. By relying on the friction between the friction tooth blocks in the friction damping component, the vibration generated by the external load is offset, thus ensuring the stability and reliability of the wind turbine.

[0021] Fourth, this invention has significant advantages in terms of safety and ease of construction. Its unique self-rotation and self-resetting, revolution and self-resetting, and vertical vibration reduction design not only improve the stability and reliability of the wind turbine, but also facilitate construction and maintenance, contributing to the sustainable development of the wind power industry. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of the horizontal anti-sway system of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0025] Figure 4 This is a schematic diagram of a translational self-resetting elastic rope group of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0026] Figure 5 This is a three-dimensional schematic diagram of a vertical vibration reduction system for a floating vertical axis wind turbine anti-sway device according to the present invention;

[0027] Figure 6 This is a cross-sectional schematic diagram of the vertical vibration reduction system of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0028] Figure 7 This is a schematic diagram of a friction damping component of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0029] Figure 8 This is a detailed drawing of the arc-shaped friction strip of a floating vertical axis wind turbine anti-sway device according to the present invention;

[0030] The components include: 1. Horizontal anti-sway system; 2. Vertical vibration damping system; 3. Rotary self-resetting spring; 4. Translational self-resetting elastic rope assembly; 4-1. SMA rope; 5. Hollow bearing bushing; 6. Cover plate; 7. Steel rings; 7-1. Steel ring No. 1; 7-2. Steel ring No. 2; 7-3. Steel ring No. 3; 7-4. Steel ring No. 4; 7-5. Steel ring No. 5; 7-6. Steel ring No. 6; 7-7. Steel ring No. 7. 7-8, No. 8 steel rings; 8, screw; 9, nut; 10, upper hollow ring disc base; 11, pad block; 12, friction damping assembly; 12-1, cylinder; 12-2, inner sleeve; 12-2-1, steel clamp; 12-3, friction tooth block assembly; 12-3-1, arc-shaped friction strip; 13, circular base; 14, connecting piece; 14-1 hollow plate; 14-2, steel strip. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0036] Furthermore, the descriptions of orientations in this specification, such as up, down, left, right, front, back, inside, outside, longitudinal, transverse, vertical, and horizontal, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0037] The structure of vertical axis wind turbines in the existing technology is completely different from that of horizontal axis wind turbines. Therefore, the vibration modes of the two types of wind turbines are also completely different. The vibration amplitude of vertical axis wind turbines in the yaw direction is much greater than that in other directions. Existing technologies mainly address the vibration problems of horizontal axis wind turbines, and there is a lack of design for self-resetting devices for vertical axis wind turbines. There is no efficient vibration reduction device developed specifically for the motion characteristics of vertical axis wind turbines to solve their vibration problems.

[0038] Based on this, the embodiments of this specification propose a solution for a floating vertical axis wind turbine anti-sway device: Embodiment 1, this embodiment provides a floating vertical axis wind turbine anti-sway device. Figure 1 The diagram shown is a cross-sectional view of the device. Figure 2 The diagram shown is a three-dimensional schematic of the device. The floating vertical axis wind turbine sway reduction device includes a horizontal sway reduction system 1 and a vertical vibration reduction system 2. The horizontal sway reduction system is located above the vertical vibration reduction system. The horizontal sway reduction system 1 and the vertical vibration reduction system 2 are connected together to form the vertical axis wind turbine sway reduction device; as shown... Figure 3 , 4 As shown, the horizontal anti-roll system 1 includes a rotary self-resetting spring 3, a translational self-resetting elastic rope assembly 4, a hollow belt-mounted bushing 5, a cover plate 6, a steel ring 7, and an upper hollow ring-shaped base 10. The hollow belt-mounted bushing 5 is located at the center of the upper hollow ring-shaped base 10, and the cover plate 6 is located between the hollow belt-mounted bushing 5 and the upper hollow ring-shaped base 10, covering the upper part of the upper hollow ring-shaped base 10. The rotary self-resetting spring 3 is located at the center of the hollow belt-mounted bushing 5, with one end connected to the inner wall of the hollow belt-mounted bushing and the other end welded to the upper hollow ring-shaped base 10.

[0039] Multiple steel rings 7 are welded to the outer wall of the hollow bearing bushing 5 and the upper surface of the cover plate 6, respectively. A translational self-resetting elastic rope assembly 4 is connected to each steel ring 7, thus connecting the hollow bearing bushing 5 and the cover plate 6 into a single unit. The translational self-resetting elastic rope assembly 4 possesses high plastic deformation and recoverability, enabling the vertical axis wind turbine sway reduction device to quickly return the hollow bearing bushing 5 to the center position of the upper hollow ring disc base 10 under wind loads and waves. This results in better sway reduction, reduces the complex impact of loads on the structure, and significantly improves the structural safety performance.

[0040] Preferably, the cover plate 6 is located at the position with the smaller outer diameter of the hollow bearing bushing 5 and there is a distance between them. Pads 11 are placed on the upper and lower sides of the cover plate 6 respectively. The pads 11 can be polyethylene pads. The cover plate 6 is bolted to the upper hollow ring-shaped base 10.

[0041] Specifically, there are eight steel rings 7. Four steel rings 7 are welded to the outer wall of the hollow bearing bushing in the front, back, left, and right directions, and are named No. 1, No. 2, No. 3, and No. 4 respectively. The other four steel rings 7 are welded to the upper front and back directions of the cover plate, and are named No. 5, No. 6, No. 7, and No. 8 respectively from front to back and from left to right. The translational self-resetting elastic rope group 4 consists of four SMA (shape memory alloy) ropes 4-1. The first SMA rope is tied to steel ring 1 at one end, then passes through steel rings 5 ​​and 7 in sequence, and is finally tied to steel ring 2 at the other end. The second SMA rope is arranged symmetrically with the first SMA rope, tied to steel rings 1 and 2 at both ends, and passes through steel rings 6 and 8 in sequence. The third SMA rope is tied to steel ring 3 at one end, then passes through steel rings 5 ​​and 6 in sequence, and is finally tied to steel ring 4 at the other end. The fourth SMA rope is arranged symmetrically with the third SMA rope, tied to steel rings 3 and 4 at both ends, and passes through steel rings 7 and 8 in sequence.

[0042] The hollow bushing 5 includes an upper bushing portion and a lower base portion. The bushing portion has an annular cross-sectional shape, while the base portion is stepped, having a large-diameter section and a small-diameter section. A central hole is provided in the center of the base portion. The inner diameter of the bushing portion is larger than the inner diameter of the central hole in the base portion. A rotary self-resetting spring 3 is disposed in the central hole of the base portion. The outer diameter of the rotary self-resetting spring 3 is equal to the inner diameter of the central hole, and the height of the rotary self-resetting spring 3 is equal to the height of the central hole.

[0043] Preferably, the horizontal sway reduction system 1 and the vertical vibration reduction system 2 are connected by screws 8 and nuts 9.

[0044] like Figure 5-8 As shown, the vertical vibration damping system 2 includes a friction damping component 12, a circular base 13, and a connector 14.

[0045] The friction damping assembly 12 includes a cylinder 12-1, an inner sleeve 12-2, and a friction tooth block assembly 12-3. The circular base 13 has a circular cross-section and is welded to the lower part of the cylinder 12-1.

[0046] The inner sleeve 12-2 is located inside the cylinder 12-1, and the friction tooth block assembly 12-3 is respectively located on the outer wall surface of the inner sleeve 12-2 and the inner wall surface of the cylinder 12-1. The friction tooth block assembly 12-3 on the inner side of the cylinder 12-1 is interlocked with the friction tooth block assembly 12-3 on the outer side of the inner sleeve 12-2. The friction damping assembly 12 is mainly used to solve the vibration problem of the wind turbine. Wind load and sea level vibration have a huge impact on the wind turbine. By relying on the friction between the friction tooth block assemblies 12-3 in the friction damping assembly 12, the vibration generated by the external load is offset, thus ensuring the stability and reliability of the wind turbine.

[0047] Preferably, the friction tooth block assembly 12-3 is welded to the inner sleeve 12-2 and the cylinder 12-1. The friction tooth block assembly 12-3 is composed of multiple arc-shaped friction strips 12-3-1. The cross-sectional shape of the arc-shaped friction strips 12-3-1 is trapezoidal. The multiple arc-shaped friction strips 12-3-1 are arranged horizontally, and the distance between two is equal to the short side of the trapezoidal cross-section.

[0048] The connector 14 consists of a hollow plate 14-1 and a steel strip 14-2. The hollow plate 14-1 has a circular cross-section and is used to connect with the upper hollow ring-shaped base 10 of the horizontal anti-sway system 1. The steel strip 14-2 is located below the hollow plate 14-1 and has bolt holes.

[0049] The inner sleeve 12-2 consists of four steel clamping plates 12-2-1. Each steel clamping plate 12-2-1 has a U-shaped cross-section and corresponding bolt holes on its inner side. The four steel clamping plates 12-2-1 are connected together by a steel strip 14-2 to form the inner sleeve 12-2. Specifically, the steel strip 14-2 is located between two steel clamping plates 12-2-1, and the inner side of the steel clamping plates 12-2-1 is bolted to the steel strip 14-2. The friction tooth block assembly 12-3 is welded to the outer side of the steel clamping plates 12-2-1.

[0050] The floating vertical axis wind turbine anti-sway device of this application controls the vibration of the floating vertical axis wind turbine in six free directions through the coordinated operation of the horizontal anti-sway system 1 and the vertical vibration reduction system 2. It adopts an automatic reset mechanism, achieving fully passive control and improving the efficiency of vibration control. Because the wind turbine blades rotate under wind load, resulting in a huge torque on the bottom, this invention effectively solves this problem.

[0051] Example 2

[0052] This embodiment provides an installation method for a floating vertical axis wind turbine anti-sway device, the steps of which are as follows:

[0053] Step 1: Weld the steel ring 7 to the hollow bearing bushing 5 and the cover plate 6. Weld the circular base 13 to the cylinder 12-1. Weld the friction tooth block assembly 12-3 to the inner sleeve 12-2 and the cylinder 12-1. Install the hollow bearing bushing 5 and the upper hollow ring disc base 10 together. Rotate the self-resetting spring 3 and weld it to the hollow bearing bushing 5 and the upper hollow ring disc base 10.

[0054] Step 2: Assemble the horizontal anti-sway system 1 by connecting the cover plate 6, the hollow bearing bushing 5, and the upper hollow ring disc base 10 together.

[0055] Step 3: Assemble the vertical vibration damping system 2 by connecting the friction damping component 12, the circular base 13, and the connector 14 together.

[0056] Step 4: Connect the horizontal sway reduction system 1 and the vertical vibration reduction system 2 together.

[0057] Through the above embodiments, the present invention is based on a floating vertical axis wind turbine anti-sway device and installation method. The modular design of each component is highly advanced, allowing for flexible installation as needed. It is easy to manage and maintain, facilitates mass production, and is beneficial for later maintenance and repair, thus reducing the later use cost.

[0058] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0059] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A floating vertical axis wind turbine anti-sway device, comprising a horizontal anti-sway system (1) and a vertical vibration reduction system (2), wherein the horizontal anti-sway system is located above the vertical vibration reduction system, characterized in that: The horizontal anti-sway system (1) includes a rotational self-resetting spring (3), a translational self-resetting elastic rope assembly (4), a hollow seated bushing (5), a cover plate (6), a steel ring (7), and an upper hollow ring disc base (10); the hollow seated bushing (5) is located at the center of the upper hollow ring disc base (10), and the cover plate (6) is located between the hollow seated bushing (5) and the upper hollow ring disc base (10), covering the upper part of the upper hollow ring disc base (10); the rotational self-resetting spring (3) is located at the center of the upper hollow ring disc base (10), and the cover plate (6) is located between the hollow seated bushing (5) and the upper hollow ring disc base (10), covering the upper part of the upper hollow ring disc base (10); the rotational self-resetting spring (4) is located at the center of the upper hollow ring disc base (10), and the translational self-resetting elastic rope assembly (4) is located at the center of the upper hollow ring disc base (10). The positioning spring (3) is set in the center of the hollow bearing bushing (5), with one end connected to the inner wall of the hollow bearing bushing and the other end welded to the upper hollow ring disc base (10); there are multiple steel rings (7), which are welded to the outer wall of the hollow bearing bushing (5) and the upper surface of the cover plate (6) respectively. The translational self-resetting elastic rope group (4) is connected to each steel ring (7), and the hollow bearing bushing (5) and the cover plate (6) are connected into a whole through the translational self-resetting elastic rope group (4); The vertical vibration damping system (2) includes a friction damping assembly (12) and a circular base (13). The friction damping assembly (12) includes a cylinder (12-1), an inner sleeve (12-2), and a friction tooth block assembly (12-3). The circular base (13) is welded to the lower part of the cylinder (12-1). The inner sleeve (12-2) is located inside the cylinder (12-1), and the friction tooth block assembly (12-3) is located on the outer wall of the inner sleeve (12-2) and the inner wall of the cylinder (12-1), respectively. The friction tooth block assembly (12-3) on the inner side of the cylinder (12-1) and the friction tooth block assembly (12-3) on the outer side of the inner sleeve (12-2) are interleaved.

2. The floating vertical axis wind turbine anti-sway device according to claim 1, characterized in that, There are eight steel rings (7), four of which are welded to the front, back, left, and right sides of the outer wall of the hollow bearing bushing. These steel rings are named No. 1, No. 2, No. 3, and No. 4 respectively according to their front, back, left, and right sides. The other four steel rings (7) are welded to the front and back sides of the upper side of the cover plate. These steel rings are named No. 5, No. 6, No. 7, and No. 8 respectively according to their front to back and left to right sides. The translational self-resetting elastic rope group (4) consists of four SMA (shape memory alloy) ropes 4-1. The first SMA rope One end of the first SMA rope is tied to steel ring 1, then passes through steel rings 5 ​​and 7 in sequence, and finally ties to steel ring 2; the second SMA rope is symmetrically arranged with the first SMA rope, with both ends tied to steel rings 1 and 2, and passes through steel rings 6 and 8 in sequence; one end of the third SMA rope is tied to steel ring 3, then passes through steel rings 5 ​​and 6 in sequence, and finally ties to steel ring 4; the fourth SMA rope is symmetrically arranged with the third SMA rope, with both ends tied to steel rings 3 and 4, and passes through steel rings 7 and 8 in sequence.

3. The floating vertical axis wind turbine anti-sway device according to claim 2, characterized in that, The cover plate (6) is located at the position of the small outer diameter of the hollow bearing bush (5) and there is a distance between them. Pads (11) are placed on the upper and lower sides of the cover plate (6) respectively. The cover plate (6) is bolted to the upper hollow ring disc base (10).

4. The floating vertical axis wind turbine anti-sway device according to claim 3, characterized in that, The hollow bushing (5) includes an upper bushing part and a lower base part. The bushing part has a circular cross-sectional shape, and the base part is stepped with a large diameter part and a small diameter part. A central hole is provided in the center of the base part. The inner diameter of the bushing part is larger than the inner diameter of the central hole of the base part. The self-resetting spring (3) is set in the central hole of the base part. The outer diameter of the self-resetting spring (3) is equal to the inner diameter of the central hole, and the height of the self-resetting spring (3) is equal to the height of the central hole.

5. The floating vertical axis wind turbine anti-sway device according to claim 4, characterized in that, The friction tooth block assembly (12-3) is welded to the inner sleeve (12-2) and the cylinder (12-1); the friction tooth block assembly (12-3) is composed of multiple arc-shaped friction strips (12-3-1), the cross-sectional shape of the arc-shaped friction strips (12-3-1) is trapezoidal, and the multiple arc-shaped friction strips (12-3-1) are arranged horizontally with the distance between two equal to the short side of the trapezoidal cross-section.

6. The floating vertical axis wind turbine anti-sway device according to claim 5, characterized in that, The circular base (13) has a circular cross-section and is welded to the lower part of the cylinder (12-1).

7. A floating vertical axis wind turbine anti-sway device according to claim 6, characterized in that, The vertical vibration reduction system (2) also includes a connector (14), which is composed of a hollow plate (14-1) and a steel bar (14-2). The hollow plate (14-1) has a circular cross-section and is used to connect with the upper hollow ring disc base (10) of the horizontal sway reduction system (1). The steel bar (14-2) is located below the hollow plate (14-1) and has bolt holes.

8. The floating vertical axis wind turbine anti-sway device according to claim 7, characterized in that, The inner sleeve (12-2) is composed of four steel clips 12-2-1. The cross-sectional shape of the steel clips 12-2-1 is U-shaped, and corresponding bolt holes are provided on the inner side. The four steel clips 12-2-1 are connected together by steel bars (14-2) to form the inner sleeve (12-2).

9. An installation method for a floating vertical axis wind turbine anti-sway device as described in claim 8, comprising the following specific steps: Step 1: Produce the corresponding components in the factory, weld the steel ring to the hollow seated bushing and cover plate, weld the circular base to the cylinder, weld the friction tooth block assembly to the steel clip and cylinder, weld the hollow seated bushing to the upper hollow ring disc base, and weld the rotating self-resetting spring to the hollow seated bushing and the upper hollow ring disc base. Step 2: Assemble the horizontal anti-sway system, place the cover plate in the corresponding position, and arrange the pads on the top and bottom, and bolt them to the upper hollow ring-shaped base. Step 3: Assemble the vertical vibration damping system, place the friction vibration damping components in the appropriate positions, and connect them with bolts; Step 4: Connect the horizontal sway reduction system and the vertical vibration reduction system together.

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