Wind power turbulent flow type oil damper and working method

Abstract

The wind power turbulent flow type oil damper comprises an adjusting mechanism, the upper end of the adjusting mechanism is fixed, the lower portion of the adjusting mechanism is connected with a turbulent flow mass block, the turbulent flow mass block is immersed in a damping oil pool, and damping force is provided through contact between the mass block and the damping oil pool; adjustment of damping force and damper frequency is achieved by changing the length between the turbulent flow mass block and the upper fixing piece, the problems that an existing damper is small in damping force and poor in damping effect and adaptability are solved, and the damper has the advantages of being gradually changed in structure and high in reliability. According to the wind power turbulent flow type oil damper, the vibration control problem of an offshore wind power supporting structure under a complex dynamic load is effectively solved through an innovative structural design and a tuning mechanism. The device is high in reliability, easy to maintain and high in adaptability, provides important guarantee for long-term stable operation of the offshore wind turbine generator, and has remarkable economic benefits and engineering application value.

Description

Technical Field

[0001] The invention belongs to the technical field of wind resistance damper structures, and particularly relates to a wind power turbulent flow type oil damper and a working method thereof. Background Art

[0002] Offshore wind power support structures are infrastructure for supporting offshore wind turbines, enabling them to stand stably on the sea surface and operate normally. With the rapid development of offshore wind power, offshore wind power support structures, as an important part of wind power generation, are related to the safety and stability of wind turbines. The monopile foundation, as the most commonly used foundation form for offshore wind power, has a wide range of applications.

[0003] As the capacity of offshore wind turbines increases, the loads on offshore wind power support structures also increase. At the same time, due to the increasing water depth of offshore wind power, the support structures of offshore wind turbines are becoming more flexible, and the frequency of their support structures is relatively close to the wave frequency, which will lead to a significant increase in both the extreme load and fatigue load of the waves. At the same time, the trend of flexible design of the support structure causes its first natural frequency to approach the wave frequency (usually 0.1Hz - 0.3Hz), making it extremely easy to trigger resonance, thus greatly increasing the extreme load and fatigue damage risk of the structure.

[0004] To address the above problems, dampers are commonly used in the prior art to suppress the vibration of the support structure. Traditional dampers (such as viscous dampers, tuned mass dampers, etc.) are usually installed inside the tower barrel, and the damping force is provided by the inertial movement of the viscous cylinder or the mass block. However, these dampers have the following defects: 1. Complex structure: Traditional viscous dampers require auxiliary components such as hydraulic systems and sealing devices, resulting in high installation and maintenance costs, and are prone to oil leakage problems due to seal failure. 2. Limited damping force: Tuned mass dampers rely on the inertial movement of the mass block, and their damping force is limited by the weight of the mass block and the displacement range, making it difficult to meet the high load requirements of super-large capacity wind turbines. 3. Difficult frequency tuning: The tuning range of existing dampers is limited, and it is difficult to dynamically adjust according to the frequency change of the support structure after installation, resulting in a decrease in the vibration reduction effect during long-term operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a wind power turbulent flow type oil damper and a working method thereof to overcome the problems of small damping force, poor vibration reduction effect and poor adaptability of existing dampers.

[0006] To solve the above problems, the present invention adopts the following technical solutions: A wind power spoiler type oil damper, the oil damper is arranged on the water surface inside the tower barrel, and includes an adjusting mechanism. The upper end of the adjusting mechanism is connected with a fixing mechanism, and the lower end of the adjusting mechanism is connected with a spoiler mass block. A damping oil pool is arranged outside the spoiler mass block, and a damping oil body is arranged in the damping oil pool; The adjusting mechanism is used to adjust the length between the spoiler mass block and the fixing mechanism at the upper end of the adjusting mechanism.

[0007] Further, the spoiler mass block adopts a structure in which multiple spoiler plates are connected in a circular arrangement or a box spoiler structure.

[0008] Further, the spoiler mass block is a cylindrical or cubic structure with openings.

[0009] Further, the spoiler mass block is completely immersed in the damping oil body.

[0010] Further, the spoiler mass block is partially immersed in the damping oil body.

[0011] Further, the damping oil pool adopts a cylindrical cavity structure, and a through hole for the spoiler mass block to pass through is opened on the upper cover plate of the damping oil pool.

[0012] Further, the fixing mechanism adopts a suspension beam, and the adjusting mechanism includes a suspension cable. The suspension cable is connected with the suspension beam through an upper fixing part; An adjusting diagonal rod is arranged between the suspension beam and the suspension cable. One end of the adjusting diagonal rod is hinged with the suspension beam, a lower fixing part is installed on the suspension cable, and the other end of the adjusting diagonal rod is hinged with the lower fixing part on the suspension cable.

[0013] Further, the suspension beam is fixed on the inner wall of the tower barrel.

[0014] In the second aspect, a working method of a wind power spoiler type oil damper includes: Fix the upper end of the adjusting mechanism, connect the lower end with the spoiler mass block, immerse the spoiler mass block in the damping oil liquid in the damping oil pool, and change the frequency of the whole damper through the adjusting mechanism to adapt to the overall frequency of the wind turbine, so as to achieve the tuning purpose.

[0015] Further, the magnitude of the damping force is changed by the degree to which the spoiler mass block is immersed in the damping oil liquid in the damping oil pool.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a wind power spoiler type oil damper, which is installed above the interior of a tower barrel. It includes an adjustment mechanism. The upper end of the adjustment mechanism is fixed, and the lower part is connected to a spoiler mass block. The spoiler mass block is immersed in a damping oil pool. Through the contact between the spoiler mass block and the damping oil pool, damping force is provided. In addition, by changing the length between the spoiler mass block and the upper fixing part, the adjustment of the damping force and the frequency of the damper is realized, solving the problems of small damping force, poor vibration reduction effect and poor adaptability of the existing damper, and having the advantages of gradual structural change and high reliability; the wind power spoiler type oil damper of the present invention effectively solves the vibration control problem of the offshore wind power support structure under complex dynamic loads through innovative structural design and tuning mechanism. Its high reliability, easy maintainability and strong adaptability provide an important guarantee for the long-term stable operation of offshore wind turbines, and have significant economic benefits and engineering application value.

[0017] Preferably, the spoiler mass block adopts a structure of multiple spoiler plates connected in a circular arrangement, which increases the contact area with the damping oil body, enhances the damping effect, more effectively consumes vibration energy, and enables the vibration of the system to decay faster; at the same time, the spoiler plates arranged in a circular shape make the flow of the damping oil more complex, forming multiple local eddy current regions, and these eddy currents will increase the friction and energy loss inside the oil body, further improving the damping performance and helping to more accurately control the amplitude and frequency of vibration.

[0018] The present invention provides a working method for a wind power spoiler type oil damper. By immersing the spoiler mass block in the damping oil body, the damping force is increased, and by adjusting the length between the spoiler mass block and the upper fixing part, the motion characteristics of the mass block and the system stiffness are further adjusted, thereby realizing the adjustment of the frequency of the damper, ensuring that the frequency of the damper matches the overall frequency of the wind turbine, and achieving the purpose of tuning. Through the above method, the method of changing the frequency of the damper is simple, with fast response and high reliability.

[0019] Preferably, the size of the damping force is changed by the degree to which the spoiler mass block is immersed in the damping oil liquid in the damping oil pool. Description of the Drawings

[0020] Figure 1 It is a structural diagram of the wind power spoiler type oil damper of the present invention; Figure 2 It is an installation schematic diagram of the wind power spoiler type oil damper of the present invention; Figure 3 It is a schematic diagram of the use environment of the wind power spoiler type oil damper; Figure 4 It is a schematic diagram of the spoiler mass block partially immersed in the damping oil liquid; Figure 5 It is a schematic diagram of the spoiler mass block completely immersed in the damping oil liquid.

[0021] Among them, 1. Suspension beam; 2. Upper fixing member; 3. Suspension cable; 4. Turbulence mass block; 5. Damper oil pool; 6. Bottom plate; 7. Adjusting diagonal rod; 8. Lower fixing member. Detailed implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clear and understandable, the following specific embodiments are used to further elaborate on the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0024] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly defined and limited, if the terms "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] A damper is a device used to dissipate vibration energy, reduce the vibration amplitude and suppress the vibration of a structure. It mainly uses various physical mechanisms to convert the mechanical energy of vibration into other forms of energy, usually heat energy or other dissipative forms, so as to attenuate the vibration.

[0028] In the field of offshore wind power structures, conventional dampers require viscous cylinders to provide additional damping force. The viscous cylinder mainly includes a cylinder block, a piston, a piston rod, and an end cap. Based on the Newtonian internal friction law of viscous fluids, when the piston in the cylinder moves in the viscous fluid, a resistance proportional to the piston movement speed will be generated inside the fluid. The method of using a viscous cylinder to generate damping force has problems of complex structure and poor reliability.

[0029] The present invention provides a wind power spoiler type oil damper, as Figure 1 shown, which includes an adjustment mechanism. The upper end of the adjustment mechanism is connected to a fixing mechanism, and the lower end is connected to a spoiler mass 4. The spoiler mass 4 is immersed in the damping oil of the damping oil pool 5. The spoiler mass 4 increases the movement resistance of the spoiler mass 4 through the form of self-spoiling with the damping oil body, thereby increasing the restoring force of the damper, so as to provide a high damping force; By adjusting the distance between the spoiler mass 4 and the fixing mechanism through the adjustment mechanism, it is possible to adjust the frequency of the entire oil damper to adapt to the overall frequency of the wind turbine, thereby achieving the purpose of timely tuning; Specifically, the installation and use environment of the oil damper is as Figure 3 shown. The entire oil damper is installed inside the offshore wind power tower, and the entire oil damper is arranged at the upper part of the tower, which can effectively improve the vibration damping effect. The lower damping oil pool 5 is also located on the water surface. The damping oil pool 5 is a cylindrical cavity filled with damping oil body. There is a perforated cover plate on the upper part of the damping oil pool 5. The holes on the cover plate allow the spoiler mass 4 to pass through. The movement of the spoiler mass 4 in the damping oil body of the damping oil pool 5 provides a high damping force; The damping oil pool 5 is fixed to the bottom plate 6 of the tower by welding.

[0030] Embodiment 1 The present invention provides a wind power spoiler type oil damper. The wind power spoiler type oil damper is installed inside the offshore wind power tower and is located above the tower. It includes a fixing mechanism, an adjustment mechanism, a spoiler mass 4, and a damping oil pool 5. The fixing mechanism is installed and fixed on the inner wall of the tower. One end of the adjustment structure is connected to the fixing mechanism, and the other end is connected to the spoiler mass 4. The adjustment mechanism is used to adjust the length between the spoiler mass 4 and the fixing mechanism at the upper end of the adjustment mechanism. The spoiler mass 4 is located in the damping oil pool 5, and the damping oil pool 5 is fixed to the tower through the bottom plate 6.

[0031] In an optional implementation manner, as Figure 1As shown, the spoiler mass block 4 adopts an annular arrangement structure in which multiple spoiler plates are connected. The annular structure formed by connecting multiple spoiler plates increases the contact area with the damping oil body. When the spoiler mass block 4 moves in the damping oil, it will drive more damping oil to flow, thereby generating greater viscous resistance, enhancing the damping effect, more effectively consuming vibration energy, enabling the vibration of the system to decay faster. At the same time, the annularly arranged spoiler plates make the flow of the damping oil more complex, forming multiple local eddy current regions. These eddies will increase the internal friction and energy loss of the oil body, further improving the damping performance and helping to more accurately control the amplitude and frequency of vibration.

[0032] The annularly arranged spoiler plates can respond to vibrations in different directions in all directions. For complex, multi-directional vibrations, the annular spoiler mass block 4 can provide effective damping in all directions. Whether the vibration comes from the horizontal direction, the vertical direction or any other arbitrary angle, it can achieve good vibration reduction effects and improve the adaptability of the system to different vibration conditions.

[0033] The spoiler mass block 4 increases the movement resistance of the spoiler mass block 4 through its own form of disturbing the damping oil body, thereby increasing the restoring force of the damper. In addition, the annular structure formed by connecting multiple spoiler plates increases the overall stiffness and stability of the spoiler mass block 4. In the damping oil body, it can more stably maintain its shape and position, and is not prone to deformation or shaking, thus ensuring the consistency and reliability of the damping effect.

[0034] Optionally, the number, shape, size, spacing and connection method of the spoiler plates can be changed to optimize and adjust the damping characteristics. Increase or decrease the number of spoiler plates according to specific damping requirements, and adjust the inclination angle of the spoiler plates to achieve the adjustment of the damping force; Furthermore, the design of multiple spoiler plates can also adjust or replace local spoiler plates without replacing the entire spoiler mass block 4, reducing the maintenance and adjustment costs and improving the maintainability of the system.

[0035] In another optional implementation, the spoiler mass block 4 adopts a box spoiler structure. The spoiler mass block 4 increases the movement resistance of the spoiler mass block 4 through its own form of disturbing the damping oil body, thereby increasing the restoring force of the damper.

[0036] Optionally, the spoiler mass block 4 can also adopt a cylindrical perforated structure or a cubic perforated structure.

[0037] According to actual needs, such as Figure 4 and Figure 5As shown in the figure, the spoiler mass 4 is selected to be fully immersed in the damping oil in the damping oil pool 5 or partially immersed in the damping oil in the damping oil pool 5, with part of it exposed to the air, so as to adjust the magnitude of the damping force.

[0038] Embodiment 2 The present invention provides a wind power spoiler type oil damper, which includes a suspension beam 1, a connecting block 2, a suspension cable 3, a spoiler mass 4, a damping oil pool 5 and an adjusting diagonal rod 7; The suspension beam 1 is welded inside the tower barrel. The suspension beam 1 is usually a steel beam with a box-shaped cross-section. The box-shaped cross-section has excellent bending and torsion resistance performance, and can bear the gravity of the spoiler mass 4 and the dynamic load during the vibration process, ensuring the stability of the overall structure of the damper; The connecting block 2 is connected to the suspension beam 1. At the same time, the connecting block 2 plays a role in fixing the suspension cable 3. The two ends of the adjusting diagonal rod 7 are respectively hinged on the suspension cable 3 and the suspension beam 1. The adjusting diagonal rod 7 adjusts the motion characteristics of the mass and the system stiffness by changing its position on the suspension cable 3, so as to adjust the frequency of the damper; The lower part of the suspension cable 3 is connected to the spoiler mass 4, and the spoiler mass 4 is located in the damping oil pool 5. The spoiler mass 4 can be in the form of multiple spoiler plates arranged in a ring, or in the form of a cylinder with holes or a cube with holes. The spoiler mass 4 mainly increases the motion resistance of the spoiler mass 4 through the form of its own turbulence with the damping oil body, thereby increasing the restoring force of the damper.

[0039] The spoiler mass 4 can be fully immersed in the oil, or part of it can be immersed in the oil and part of it can be exposed to the air. For these two methods, the magnitude of the damping force provided by the damping oil pool 5 is different. One of the methods can be selected according to the specific damping force requirements.

[0040] The damping oil pool 5 is a cylindrical cavity filled with an oil body. There is a perforated cover plate on the upper part of the oil pool. The holes on the cover plate allow the spoiler plate to pass through. The damping oil pool 5 is fixed to the bottom plate 6 by welding, and the bottom plate 6 is fixed to the tower barrel.

[0041] Embodiment 3 A wind power spoiler type oil damper includes an adjusting structure, a fixing mechanism, a spoiler mass, a damping oil pool and a bottom plate. The adjusting mechanism includes a connecting block 2, a suspension cable 3 and an adjusting diagonal rod 7, and the fixing mechanism uses a suspension beam 1; The suspension beam 1 serves as the load-bearing main body of the damper and is welded inside the tower barrel. It is usually a steel beam with a box-shaped cross-section. The cross-sectional size of the suspension beam 1 is designed according to the tower barrel diameter and load requirements, and strengthening ribs are added inside to improve the stiffness; The suspension cable 3 is connected to the suspension beam 1 through the upper fixing end 2, and a lower fixing part 8 for hinging with the adjusting diagonal rod 7 is installed on the suspension cable 3; The two ends of the adjusting diagonal rod 7 are respectively hinged to the sling 3 and the suspension beam 1. The adjusting diagonal rod 7 is a rigid rod with both ends hinged. One end is hinged to the suspension beam 1, and the other end is connected to the sling 3 through the lower fixing member 8 and can move horizontally on the suspension beam 1.

[0042] When the adjusting diagonal rod 7 moves on the suspension beam 1, it will drive the position of the lower fixing member 8 to change. The change in the position of the lower fixing member 8 will change the relative position relationship between the flow disturbing mass block 4 and the suspension beam 1. The motion state of the flow disturbing mass block 4 will change due to the change in its relative position with the suspension beam 1. For example, when the adjusting diagonal rod 7 makes the lower fixing member 8 approach the suspension beam 1, the swing amplitude and frequency of the flow disturbing mass block 4 will change accordingly.

[0043] When the flow disturbing mass block 4 moves in water, its motion characteristics are closely related to the generated damping force. After the position changes, the interaction between the flow disturbing mass block 4 and the water body changes, and the flow disturbing effect of the flow disturbing mass block 4 will also change, thereby affecting the magnitude and frequency of the restoring force generated by the damper; if the swing amplitude of the flow disturbing mass block 4 decreases, its interaction with the water body weakens, and both the damping force and the frequency will change accordingly. The change in the position of the adjusting diagonal rod 7 will change the stiffness of the entire damper system. According to the calculation formula of the natural frequency, the change in the system stiffness will cause the natural frequency of the damper to change, achieving matching with the frequency of the support structure.

[0044] The lower part of the sling 3 is connected to the flow disturbing mass block 4. The flow disturbing mass block 4 is located in the damping oil pool 5, and its material is preferably multi-strand steel wire rope or carbon fiber composite material; The damping oil pool 5 is a cylindrical cavity filled with oil. The damping oil pool 5 is fixed to the bottom plate 6 by welding. The bottom plate 6 is fixed to the tower barrel. The upper part of the damping oil pool 5 is provided with a perforated cover plate, and the aperture is slightly larger than the movement track of the flow disturbing mass block to ensure the free movement of the mass block while reducing oil splashing. The hole on the cover plate allows the flow disturbing mass block 4 to pass through.

[0045] The flow disturbing mass block 4 can be in the form of multiple flow disturbing plates arranged in a ring, or in the form of a cylinder with holes or a cube with holes. The flow disturbing mass block 4 increases the movement resistance through its own flow disturbing action on the damping oil body, thereby increasing the restoring force of the damper. The flow disturbing mass block 4 can be completely immersed in the oil or partially immersed in the oil, and the specific method is selected according to the damping force requirement; In this embodiment, when the spoiler mass 4 moves in the damping oil pool 5, the holes on its surface or the gaps between the plates cause fluid separation and vortex effects, significantly increasing the movement resistance. By changing the immersion depth of the spoiler mass 4 (fully immersed or partially immersed) and the length between the spoiler mass 4 and the upper suspension beam 1, dual adjustment of the damping force and frequency is achieved to adapt to different sea conditions and the operating states of the unit. All exposed components are coated with anti-corrosion coatings or made of corrosion-resistant materials, and the sealed design of the damping oil pool 5 can effectively isolate seawater erosion and extend the service life of the device.

[0046] In summary, the wind power spoiler type oil damper provided by the present invention is a new type of vibration damping device that combines aerodynamics and fluid damping technologies and can replace conventional dampers. Its mass block is located at the upper part of the tower barrel, and a bottom plate 6 is welded to the upper part of the tower barrel. The damping oil pool 5 is installed on the upper part of the tower barrel bottom plate 6. Through the contact between the spoiler mass 4 and the damping oil pool 5, resistance is provided. At the same time, the spoiler mass 4 is in the form of a spoiler plate or a spoiler box. When the spoiler mass 4 moves in the damping oil body, the spoiler mass 4 has a large resistance coefficient and can generate a large restoring resistance. Compared with the existing commonly used dampers for offshore wind power, the present invention does not require a viscous oil cylinder and has the advantages of gradual structural change and high reliability.

[0047] In addition, an adjustable diagonal rod is hinged between the suspension beam and the sling. By adjusting the diagonal rod, the position between the spoiler mass 4 and the suspension beam 1 is changed, and then the movement characteristics of the spoiler mass 4 and the system stiffness are adjusted to achieve the adjustment of the damper frequency. The present invention also provides a working method for a wind power spoiler type oil damper, specifically as follows: Fix the upper end of the adjustment mechanism and connect the lower end to the spoiler mass 4. Immerse the spoiler mass 4 in the damping oil liquid in the damping oil pool 5, and change the length between the spoiler mass 4 and the suspension beam 1 through the adjustment mechanism to change the frequency of the entire damper to adapt to the overall frequency of the wind turbine generator set, so as to achieve the tuning purpose.

[0048] Preferably, the present invention also provides an installation method for the device, including the following steps: Select an installation position on the upper part of the tower barrel (at a position 5 m to 10 m from the top of the tower barrel), clean the oil stain and rust on the inner wall, and mark the installation position lines of the suspension beam 1 and the bottom plate 6; Weld the suspension beam 1 to the inner wall of the tower barrel according to the marked position, and use a theodolite to detect the levelness of the suspension beam 1, with the error controlled within 2 mm. After welding, perform anti-corrosion touch-up painting; Fix the bottom plate 6 to the inner wall of the tower barrel with bolts. After adjusting the levelness, weld the bottom of the damping oil pool 5 to the bottom plate 6, inject damping oil into the damping oil pool 5 (the injection volume reaches the design height, such as 1200 mm), and install the perforated cover plate; Install a suspension cable 3 below the suspension beam 1, and hinge an adjusting diagonal rod 7 between the suspension beam 1 and the suspension cable 3, so that the flow disturbance mass block 4 is located 100 mm above the damping oil pool 5; Lifting of the flow disturbance mass block 4: Lift the flow disturbance mass block 4 by a crane, connect it to the pin shaft at the lower end of the suspension cable 3, and slowly lower it into the damping oil pool 5 to ensure that the center of the flow disturbance mass block 4 is aligned with the center of the damping oil pool 5 (the deviation ≤ 5 mm).

[0049] In the working method of the above-mentioned wind power flow disturbance type oil damper, design a frequency tuning mechanism, and the specific implementation steps are as follows: According to the first-order design frequency of the support structure, set the initial frequency of the damper by initially adjusting the length of the suspension cable 3; Use the sensor to actually measure the actual frequency of the support structure, and achieve precise frequency matching by finely adjusting the position of the adjusting diagonal rod 7; When the frequency of the support structure deviates due to foundation scouring, marine organism attachment or corrosion, the frequency of the damper can be adjusted by simply changing the position of the adjusting diagonal rod 7.

[0050] The adjusting diagonal rod 7 is a rigid rod hinged at both ends, one end is connected to the suspension beam 1, and the other end is connected to the lower fixing member 8. The adjusting diagonal rod 7 moves horizontally on the suspension beam 1, and thus the position of the lower fixing member 8 can be adjusted. By adjusting the position between the lower fixing member 8 and the flow disturbance mass block 10, the natural frequency of the damper can be adjusted, and thus the frequency of the damper can be ensured to match the frequency of the support structure.

[0051] The wind power flow disturbance type oil damper provided by the present invention effectively solves the deficiencies of the existing conventional dampers through the innovative design of the flow disturbance mass block and the damping oil pool, and has remarkable advantages such as simple structure, high damping force, adjustable frequency, and strong adaptability. Its design concept and implementation method provide a reliable and economical technical solution for the vibration control of offshore wind power support structures, and have broad engineering application prospects and promotion value.

[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited thereto. Within the technical concept scope of the present invention, various simple modifications can be made to the technical solution of the present invention, including any other suitable combination of each technical feature. These simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A wind power spoiler type oil damper, characterized in that, The wind power spoiler type oil damper is arranged on the water surface inside the tower barrel, and includes an adjusting mechanism. The upper end of the adjusting mechanism is connected with a fixing mechanism, and the lower end of the adjusting mechanism is connected with a spoiler mass block (4). A damping oil pool (5) is arranged outside the spoiler mass block (4), and a damping oil body is arranged in the damping oil pool (5). The adjusting mechanism is used to adjust the length between the spoiler mass block (4) and the fixing mechanism at the upper end of the adjusting mechanism.

2. The wind power spoiler type oil damper according to claim 1, characterized in that, The spoiler mass block (4) adopts a structure in which multiple spoiler plates are connected in a circular arrangement or a box spoiler structure.

3. The wind power spoiler type oil damper according to claim 1, characterized in that, The spoiler mass block (4) is a cylindrical or cubic structure with openings.

4. A wind power spoiler type oil damper according to claim 1, characterized in that, The spoiler mass block (4) is completely immersed in the damping oil body.

5. The wind power spoiler type oil damper according to claim 4, characterized in that, The spoiler mass block (4) is partially immersed in the damping oil body.

6. The wind power spoiler type oil damper and working method according to claim 1, characterized in that, The damping oil pool (5) adopts a cylindrical cavity structure, and a through hole for the spoiler mass block (4) to pass through is opened on the upper cover plate of the damping oil pool (5).

7. The wind power spoiler type oil damper according to claim 1, wherein The fixing mechanism adopts a suspension beam (1), and the adjusting mechanism includes a suspension cable (3). The suspension cable (3) is connected with the suspension beam (1) through an upper fixing part (2). An adjusting diagonal rod (7) is arranged between the suspension beam (1) and the suspension cable (3). One end of the adjusting diagonal rod (7) is hinged with the suspension beam (1), a lower fixing part (8) is installed on the suspension cable (3), and the other end of the adjusting diagonal rod (7) is hinged with the lower fixing part (8) on the suspension cable (3).

8. The wind power turbulent flow type oil damper according to claim 7, characterized in that, The suspension beam (1) is fixed on the inner wall of the tower barrel.

9. A working method of the wind power spoiler type oil damper according to claim 1, characterized in that, Including: Fix the upper end of the adjusting mechanism, connect the lower end with the spoiler mass block (4), immerse the spoiler mass block (4) in the damping oil liquid in the damping oil pool (5), and change the frequency of the whole damper through the adjusting mechanism to adapt to the overall frequency of the wind turbine, so as to achieve the tuning purpose.

10. A wind power spoiler type oil damper according to claim 9, characterized in that, Change the magnitude of the damping force by the degree to which the spoiler mass block (4) is immersed in the damping oil liquid in the damping oil pool (5).

Images