A Tuned Liquid Column Damper Vibration Damping System for Floating Wind Power

Abstract

The present invention provides a tuned liquid column damping and vibration reduction system for floating wind power. The system is arranged inside the wind turbine tower. Four groups of guide rails are arranged on the inner wall of the wind turbine tower, and an annular bottom plate is arranged at the lower side. A spring base and a spring are arranged on the annular bottom plate. The upper part of the spring is provided with a tuned liquid column ball damper riser, and a pulley block is located on the guide rail. The bottoms of the tuned liquid column ball damper risers are installed with a cross-shaped tuned liquid column ball damper horizontal pipe to communicate. A ball valve is installed in the middle of the tuned liquid column ball damper horizontal pipe, and a one-way double-opening valve, a valve position limiter, a switch valve, and a pressure sensor are installed in the middle of the branch pipe. A vibration sensor is installed at the top of the wind turbine tower. The system dynamically adjusts the natural vibration frequency of the system by coordinating the working liquid flow in the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal pipe, has the effect of three-dimensional semi-active vibration control, solves the problems of narrow frequency band and single control direction of the traditional system, and is more suitable for use in complex marine environments.

Description

Technical Field

[0001] The invention relates to the technical field of vibration control, and in particular to a tuning liquid column damping vibration reduction system for floating wind power. Background Art

[0002] With the accelerated layout of offshore wind power projects and the continuous exploration of the marine environment, the offshore wind power industry is gradually developing towards high power and deep sea. Wind turbine blades are getting longer and longer, and wind turbine towers are getting taller. Highly flexible wind turbine blades and wind towers are more prone to vibration in complex marine environments, which directly threatens the safe and stable operation of wind turbines and significantly increases the operation and maintenance costs of wind farms.

[0003] As the supporting component of the wind turbine, the tower bears most of the load of the wind turbine. Especially in the floating wind turbine under the combined action of wind, waves and current, the vibration problem is more prominent, which has an adverse effect on the normal operation and structural safety of the entire wind turbine, and will lead to the life reduction of acceleration-sensitive mechanical equipment such as generators, inverters, yaw systems, gearboxes, hydraulic systems and mechanical brake systems, increase operating failures and maintenance costs, and reduce the wind energy conversion efficiency of wind turbines. In order to solve this problem, vibration control has become an effective method. At present, there are mainly passive control, active control, semi-active control and hybrid control methods. Among them, the passive control methods include free layer damping, passive constrained damping, tuned mass damper, tuned liquid column damper, viscoelastic damper, etc.; the active control methods include piezoelectric active damping, active constrained layer damping, active mass damper, etc.; the semi-active control methods include shape memory alloys, particle damping, magnetorheological or electrorheological dampers, etc.; the hybrid control methods include piezoelectric damping composites, hybrid mass damping, etc.

[0004] At present, the ordinary tuned liquid column ball damper used in offshore wind turbines is to reduce vibration by the flow of liquid in the U-tube. The head loss of the working liquid caused by the liquid movement and the viscosity in the boundary layer during vibration realizes energy consumption. The ordinary tuned liquid column ball damper provides vibration reduction in a single direction. It has limited functions under the action of complex environmental loads, cannot avoid the vibration effect in the vertical swing direction, and even aggravates the vibration due to its own weight, and the controllable vibration frequency band is narrow. In view of the above problems, the applicant invented a tuned liquid column damping vibration reduction system for floating wind power. The system coordinates the natural frequency of the working liquid in the vertical pipe of the tuned liquid column ball damper and the horizontal pipe of the tuned liquid column ball damper, and combines the vibration reduction effect of the vertical spring. It has the effect of three-dimensional semi-active vibration control, solves the problems of narrow frequency band and single control direction of the traditional system, and thus improves the adaptability to complex environmental loads. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a tuned liquid column damping vibration reduction system for floating wind power, which is provided by setting a wind turbine tower required for installing a wind turbine, arranging four sets of guide rails on the upper side of the inner wall of the wind turbine tower, arranging an annular bottom plate on the lower side of the inner cavity, arranging a spring base and a spring on the annular bottom plate, installing a tuned liquid column ball damper riser and a pulley block on the upper part of the spring on the guide rail, installing a tuned liquid column ball damper horizontal tube between the bottoms of the tuned liquid column ball damper risers to communicate with each other, the tuned liquid column ball damper horizontal tube is a cross-shaped structure, and the tuned liquid column ball damper horizontal tube is provided on the upper part of the spring. A ball valve is installed in the middle of the pipe, a one-way double-opening gate valve, a gate valve limiter, a switch valve and a pressure sensor are installed in the middle of the branch pipe of the tuned liquid column ball damper horizontal pipe, a vibration sensor is installed on the top of the wind turbine tower, and working fluid is placed in the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal pipe. The tuned liquid column damping vibration reduction system for floating wind power has the effect of three-dimensional semi-active vibration control by coordinating the natural frequency of the working fluid in the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal pipe, thereby solving the problems of narrow frequency band and single control direction of traditional systems.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A tuned liquid column damping vibration reduction system for floating wind power, comprising a wind turbine tower, a limiter, a guide rail, a pulley block, an inner cavity, a tuned liquid column ball damper riser, a tuned liquid column ball damper horizontal tube, a spring, a spring base, a working fluid, an annular bottom plate, a triangular ribbed plate, a ball valve, a vibration sensor, a one-way double-opening door valve, a door valve limiter, a switch valve, a protective net and a pressure sensor, characterized in that: the tuned liquid column damping vibration reduction system for floating wind power is arranged in the wind turbine tower, an inner cavity is arranged on the upper inner side of the wind turbine tower, an annular bottom plate is arranged on the inner side of the wind turbine tower near the lower end, a triangular ribbed plate is arranged on the lower side of the annular bottom plate and connected to the inner wall of the wind turbine tower, four sets of guide rails are evenly installed along the circumference in the inner cavity of the wind turbine tower, limiters are arranged at both ends of the guide rails, pulley blocks are installed on the guide rails, and a tuned liquid column ball damper riser is installed on the outer side of the pulley block, and the tuning A tuned liquid column ball damper horizontal tube is installed between the bottoms of the tuned liquid column ball damper riser, and the structure of the tuned liquid column ball damper horizontal tube is cross-shaped. A spring base is arranged on the annular bottom plate below the bottom of the tuned liquid column ball damper riser, and a spring is installed on the spring base to be connected with the bottom of the tuned liquid column ball damper riser; a ball valve is installed in the middle of the cross of the tuned liquid column ball damper horizontal tube, and a protective net is installed on the outside of the ball valve; a one-way double-opening door valve is installed in the middle of the cross-shaped branch of the tuned liquid column ball damper horizontal tube, a switch valve is arranged in the middle of the one-way double-opening door valve, and a door valve limiter and a pressure sensor are arranged on the rear side of the one-way double-opening door valve; a vibration sensor is installed at the top of the fan tower, which is located above the tuned liquid column ball damper riser; there is working fluid in the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal tube, and a control module is installed in the fan tower.

[0008] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is arranged in a wind turbine tower, and the wind turbine tower is a supporting and protective structure, which can be arranged at the bottom, top or other position of the wind turbine tower according to use requirements.

[0009] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with a tuned liquid column ball damper riser and a tuned liquid column ball damper horizontal tube. The tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal tube are rectangular tube structures and are rigidly connected. The top of the tuned liquid column ball damper riser is a closed structure. The control effect is best when the weight of the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal tube is 2%-5% of the weight of the wind turbine.

[0010] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with a spring, which is fixed on the spring base and hingedly connected to the tuned liquid column ball damper riser, and the spring meets the required stiffness requirements.

[0011] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with a working liquid, and the working liquid may be pure water, sea water, glycerin or other liquids with good fluidity, and the height of the working liquid in the riser of the tuned liquid column ball damper is located at half the height of the riser of the tuned liquid column ball damper.

[0012] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with an annular bottom plate, and the inner diameter of the annular bottom plate is smaller than the distance from the center of the circle to the spring base installed on the annular bottom plate.

[0013] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with triangular ribbed plates, and the triangular ribbed plates are arranged at intervals of 45° along the center circle of the annular bottom plate, and the triangular ribbed plates are locally encrypted at the bottom where the spring base is provided.

[0014] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with a ball valve, and the diameter of the ball valve is 50%-90% of the diameter of the inscribed circle in the horizontal tube of the tuned liquid column ball damper.

[0015] Furthermore, the tuned liquid column damping vibration reduction system for floating wind power is provided with a one-way double-opening door valve, and the opening direction placed in the horizontal tube of the same tuned liquid column ball damper needs to be opened from the ball valve to the outside.

[0016] Furthermore, the surfaces of the tuned liquid column ball damper riser, tuned liquid column ball damper horizontal tube, ball valve, one-way double-opening gate valve, gate valve limiter, switch valve, protective net and pressure sensor of the tuned liquid column damping vibration reduction system for floating wind power are coated with an anti-corrosion layer.

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

[0018] 1. The tuned liquid column damping vibration reduction system for floating wind power is equipped with a control module for intelligent dynamic adjustment of the natural frequency. The corresponding frequency adjustment is performed through the controller component composed of vibration sensors, pressure sensors, and switch valves. The ordinary tuned liquid column ball damper is improved by adding a ball valve, converting the complex valve control system into a simple control system, and changing the passive control into semi-active control. At the same time, it has the excellent effect of passive control and also has the effect of widening the control frequency band through a small amount of energy adjustment to achieve better vibration control effect;

[0019] 2. The tuned liquid column damping vibration reduction system for floating wind power uses two U-shaped tuned liquid column ball dampers to control horizontal vibrations. At the same time, when the wind turbine is subjected to vibrations in the heave direction, the entire tuned liquid column ball damper acts as a tuned mass damper as an integral mechanism, buffering the heave direction vibrations through the inertia of the mass block and the vertical spring restoring force. When the external environmental load acts on the wind turbine from any direction, multi-dimensional vibrations can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axonometric schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is a schematic top view of the overall structure of the invention of the present invention;

[0023] Figure 4 It is a schematic diagram of the local structure of the present invention.

[0024] The markings in the figure are: 1. Wind turbine tower; 11. Limiter; 12. Guide rail; 13. Pulley block; 2. Inner cavity; 21. Tuned liquid column ball damper riser; 22. Tuned liquid column ball damper horizontal tube; 23. Spring; 24. Spring base; 25. Working fluid; 3. Annular bottom plate; 31. Triangular ribbed plate; 4. Ball valve; 41. Vibration sensor; 42. One-way double-opening door valve; 43. Door valve limiter; 44. Switch valve; 45. Protective net; 46. Pressure sensor. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1-2 As shown: As shown is a tuned liquid column damping vibration reduction system for floating wind power, including a wind turbine tower 1, a stopper 11, a guide rail 12, a pulley block 13, an inner cavity 2, a tuned liquid column ball damper riser 21, a tuned liquid column ball damper horizontal tube 22, a spring 23, a spring base 24, a working liquid 25, an annular bottom plate 3, a triangular ribbed plate 31, a ball valve 4, a vibration sensor 41, a one-way double-opening door valve 42, a door valve stopper 43, a switch valve 44, a protective net 45 and a pressure sensor 46, as shown Figure 1-2As shown, the tuned liquid column damping vibration reduction system for floating wind power is provided with a wind turbine tower 1, and the wind turbine tower 1 is made of welded steel plates. The wind turbine tower 1 is cylindrical in structure, and the wind turbine tower 1 is a supporting and protective structure. The tuned liquid column damping vibration reduction system of the present invention is installed at the position where the wind turbine vibrates most violently, maximizing the use of the space inside the wind turbine tower, so that the tuned liquid column ball damper liquid in the tuned liquid column ball damper vibration reduction system produces the optimal oscillation restoring force and damping force, so as to achieve To achieve the best vibration reduction effect, an inner cavity 2 is arranged on the upper inner side of the wind turbine tower 1, an annular bottom plate 3 is arranged on the lower inner side of the wind turbine tower 1, the annular bottom plate 3 and the inner wall of the wind turbine tower 1 are welded, a triangular ribbed plate 31 is arranged on the lower side of the annular bottom plate 3 and connected to the inner wall of the wind turbine tower 1, the annular bottom plate 3 is a hollow structure, which is convenient for installing the generator, inverter, yaw system, gearbox, hydraulic system and mechanical brake system inside the wind turbine tower 1 or reserving space for use, the wind turbine tower 1, four sets of guide rails 12 are evenly installed along the circumference in the inner cavity 2, limiters 11 are set at both ends of the guide rails 12, pulley blocks 13 are installed on the guide rails 12, and a tuned liquid column ball damper riser 21 is installed outside the pulley block 13, and a tuned liquid column ball damper horizontal tube 22 is installed between the bottoms of the tuned liquid column ball damper riser 21, and the structure of the tuned liquid column ball damper horizontal tube 22 is a cross shape, and a spring base 24 is set on the annular bottom plate 3 below the bottom of the tuned liquid column ball damper riser 21. The spring 23 is installed on the spring base 24 and connected to the bottom of the tuned liquid column ball damper riser 21. The tensile strength of the spring 23 meets the vibration reduction requirements of the system. The inner diameter of the annular bottom plate 3 is smaller than the distance from the center of the circle to the spring base 24 installed on the annular bottom plate 3. The triangular ribbed plates 31 are arranged at an angle of 45° along the center of the annular bottom plate 3. The triangular ribbed plates 31 are locally encrypted at the bottom where the spring base 24 is arranged to improve the overall safety of the system.

[0027] like Figure 3-4As shown, a ball valve 4 is installed in the middle of the cross-shaped horizontal tube 22 of the tuned liquid column ball damper. The diameter of the ball valve 4 is 50%-90% of the diameter of the inscribed circle in the horizontal tube 22 of the tuned liquid column ball damper, which can effectively improve the head loss coefficient and achieve the best energy loss. A protective net 45 is installed on the outside of the ball valve 4. A one-way double-opening door valve 42 is installed in the middle of the cross-shaped branch pipe of the horizontal tube 22 of the tuned liquid column ball damper. A switch valve 44 is set in the middle of the one-way double-opening door valve 42. The opening direction placed in the same tuned liquid column ball damper horizontal tube 22 needs to be opened from the ball valve 4 to the outside. A gate valve limiter 43 and a pressure sensor 46 are set on the rear side of the one-way double-opening door valve 42; the top of the wind turbine tower 1 is located at the tuned liquid column ball A vibration sensor 41 is installed above the damper riser 21; there is a working liquid 25 in the tuned liquid column ball damper riser 21 and the tuned liquid column ball damper horizontal tube 22, and the working liquid 25 can be pure water, seawater, glycerin or other liquids with fluidity, and the height of the working liquid 25 in the tuned liquid column ball damper riser 21 is located at half the height of the tuned liquid column ball damper riser 21. The surfaces of the tuned liquid column ball damper riser 21, the tuned liquid column ball damper horizontal tube 22, the ball valve 4, the one-way double-opening door valve 42, the door valve limiter 43, the switch valve 44, the protective net 45 and the pressure sensor 46 are coated with an anti-corrosion layer, and a control module is installed in the wind turbine tower, and the operation of the system is intelligently controlled by the control module.

[0028] like Figure 1As shown, the tuned liquid column damping vibration reduction system for floating wind power is provided with a tuned liquid column ball damper riser 21 and a tuned liquid column ball damper horizontal tube 22. The tuned liquid column ball damper riser 21 and the tuned liquid column ball damper horizontal tube 22 are rectangular tubes and are connected by rigid connection. The top of the tuned liquid column ball damper riser 21 is a closed structure. The control effect is best when the weight ratio of the tuned liquid column ball damper riser 21 and the tuned liquid column ball damper horizontal tube 22 to the weight of the wind turbine is 2%-5%. Since the floating wind turbine is affected by multiple environmental loads at the same time, such as wind load Loads, wave loads, etc. are not limited to a single direction. When subjected to external environmental loads, the wind turbine tower vibrates, and the working fluid 25 in the tuned liquid column ball damper riser 21 and the tuned liquid column ball damper horizontal tube 22 oscillates back and forth in the pipeline with the vibration of the wind turbine tower. When the working fluid 25 reverberates from the original height due to the inertial force, the one-way double-opening valve 42 and the ball valve 4 act on each other, and the gap in the reverberation path is reduced at this time. Therefore, the working fluid 25 can absorb and dissipate the structural vibration energy through nonlinear relative motion and the viscous effect with the boundary layer, thereby reducing the structural response. At the same time, when the fan is subjected to vibration in the heave direction, the entire tuned liquid column ball damper riser 21 and the tuned liquid column ball damper horizontal tube 22 act as a whole as a tuned mass damper, and buffer the vibration in the heave direction through the inertia of the mass block and the spring restoring force; and while vibrating, the opening and closing degree of the switch valve is adjusted under the control of the switch valve through the combination of the vibration sensor 41 and the pressure sensor 46, and the damping is changed to adjust the frequency of the tuned liquid column ball damper, so as to achieve the effect of semi-active control.

[0029] In the tuned liquid column damping vibration reduction system for floating wind power shown in the figure, the vibration sensor 41 at the upper end of the wind turbine tower 1 and the pressure sensor 46 at the front end of the switch valve 44 and the gate valve limiter 43 are connected to the control module at the same time. When the wind turbine tower is subjected to environmental load and vibrates, the vibration sensor 41 receives the vibration signal and feeds it back to the control module, identifies the corresponding vibration frequency and sends the signal to the switch valve 44. The self-oscillation frequency of the tuned liquid column ball damper is changed according to the corresponding vibration frequency through the closing degree of the switch valve 44, thereby obtaining a wider controllable frequency band. At the same time, the pressure sensor 46 at the front end of the gate valve limiter 43 mentioned above is combined to perform more subtle regulation, thereby achieving the adjustment of the self-oscillation frequency of the tuned liquid column ball damper by controlling the closing degree of the switch valve 44.

[0030] In essence, this embodiment takes into account the changes in the dynamic characteristics and the changes in the self-oscillation frequency of the wind turbine due to long-term operation. The tuned liquid column ball damper can also control the vibration of the wind turbine well by changing the self-oscillation frequency of the tuned liquid column ball damper by controlling the regulating switch valve 44. Different from the single-direction control of ordinary dampers, the system is also equipped with a control module for intelligent dynamic adjustment of the self-oscillation frequency, which adjusts the frequency accordingly through vibration sensing, and improves the ordinary tuned liquid column ball damper by adding the ball valve 4, thereby reducing the complex valve control system and changing the passive control to semi-active control. It has the excellent effect of passive control and also has the effect of widening the control band through a small amount of energy regulation to achieve better vibration control effect.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A tuned liquid column damping vibration reduction system for floating wind power, comprising a wind turbine tower (1), a stopper (11), a guide rail (12), a pulley block (13), an inner cavity (2), a tuned liquid column ball damper riser (21), a tuned liquid column ball damper horizontal tube (22), a spring (23), a spring base (24), a working liquid (25), an annular bottom plate (3), a triangular ribbed plate (31), a ball valve (4), a vibration sensor (41), a one-way double-opening gate valve (42), a gate valve stopper (43), a switch valve (44), a protective net (45) and a pressure sensor (46), Features: The tuned liquid column damping vibration reduction system for floating wind power is arranged in a wind turbine tower (1); an inner cavity (2) is arranged at the upper inner side of the wind turbine tower (1); an annular bottom plate (3) is arranged at the lower inner side of the wind turbine tower (1); a triangular ribbed plate (31) is arranged at the lower side of the annular bottom plate (3) and connected to the inner wall of the wind turbine tower (1); four sets of guide rails (12) are evenly installed along the circumference of the inner cavity (2) of the wind turbine tower (1); the guide rails (12) are arranged at the lower inner side of the wind turbine tower (1); ) are provided with stoppers (11) at both ends, a pulley block (13) is installed on the guide rail (12), a tuned liquid column ball damper riser (21) is installed outside the pulley block (13), a tuned liquid column ball damper horizontal tube (22) is installed between the bottoms of the tuned liquid column ball damper riser (21), the tuned liquid column ball damper horizontal tube (22) is cross-shaped, and the annular bottom plate (3) below the bottom of the tuned liquid column ball damper riser (21) is provided on the upper A spring base (24) is provided, and a spring (23) is installed on the spring base (24) and is connected to the bottom of the vertical pipe (21) of the tuning liquid column ball damper; a ball valve (4) is installed in the middle of the cross-shaped horizontal pipe (22) of the tuning liquid column ball damper, and a protective net (45) is installed on the outside of the ball valve (4); a one-way double-opening door valve (42) is installed in the middle of the cross-shaped branch pipe of the horizontal pipe (22) of the tuning liquid column ball damper, and a protective net (45) is installed on the outside of the ball valve (4); A switch valve (44) is arranged at the bottom, and a gate valve limiter (43) and a pressure sensor (46) are arranged at the rear side of the one-way double-opening gate valve (42); a vibration sensor (41) is installed at the top of the wind turbine tower (1) above the tuned liquid column ball damper riser (21); working liquid (25) is contained in the tuned liquid column ball damper riser (21) and the tuned liquid column ball damper horizontal tube (22), and a control module is installed in the wind turbine tower (1).

2. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is arranged in a wind turbine tower (1), and the wind turbine tower (1) is a supporting and protective structure.

3. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with a tuned liquid column ball damper riser (21) and a tuned liquid column ball damper horizontal tube (22); the tuned liquid column ball damper riser (21) and the tuned liquid column ball damper horizontal tube (22) are rectangular tubes and are connected by rigid connection; the top of the tuned liquid column ball damper riser (21) is a closed structure; the weight ratio of the tuned liquid column ball damper riser (21) to the wind turbine and the weight ratio of the tuned liquid column ball damper horizontal tube (22) to the wind turbine are both 2%-5%.

4. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with a spring (23), which is fixed on a spring base (24) and is hingedly connected to a tuned liquid column ball damper riser (21).

5. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with a working liquid (25), the working liquid (25) can be pure water, seawater, or glycerol, and the height of the working liquid (25) in the tuned liquid column ball damper riser (21) is located at half the height of the tuned liquid column ball damper riser (21).

6. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with an annular bottom plate (3), wherein the inner diameter of the annular bottom plate (3) is smaller than the distance from the center of the circle to a spring base (24) installed on the annular bottom plate (3).

7. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with triangular ribbed plates (31), and the triangular ribbed plates (31) are arranged along the center circle of the annular bottom plate (3) at intervals of 45 degrees, and the triangular ribbed plates (31) are locally encrypted at the bottom where the spring base (24) is provided.

8. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with a ball valve (4), the diameter of the ball valve (4) being 50%-90% of the diameter of the inscribed circle in the horizontal tube (22) of the tuned liquid column ball damper.

9. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The tuned liquid column damping vibration reduction system for floating wind power is provided with a one-way double-opening door valve (42), and the opening direction of the valve placed in the same tuned liquid column ball damper horizontal tube (22) needs to be opened from the ball valve (4) to the outside.

10. A tuned liquid column damping vibration reduction system for floating wind power according to claim 1, Features: The surfaces of the tuned liquid column ball damper riser (21), the tuned liquid column ball damper horizontal pipe (22), the ball valve (4), the one-way double-opening gate valve (42), the gate valve limiter (43), the switch valve (44), the protection net (45) and the pressure sensor (46) of the tuned liquid column damping vibration reduction system for floating wind power are coated with an anti-corrosion layer.

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