Wind generating set and damper

Abstract

The damper is used for being arranged on a cabin platform, the damper comprises a supporting piece, a mass block and a first damping assembly, the supporting piece is connected to the cabin platform, and the mass block is borne on the supporting piece and has the moving freedom degree in the first direction relative to the supporting piece; the first damping assembly is arranged on at least one side of the mass block in the first direction, the first damping assembly comprises a first damping element and a first deformable supporting element, the first damping element is used for providing damping force, and the rigidity of the first damping element is smaller than that of the first deformable supporting element; the mass block can abut against the first damping element under supporting of the first deformable supporting element, the first damping element absorbs kinetic energy of the mass block in the first direction, and therefore the damper can meet the requirements for space, cost, reliability and service life while achieving vibration reduction of the cabin platform.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a wind turbine generator set and a damper. Background Technology

[0002] As the size of wind turbine generators increases, the flexibility of the nacelle platform increases, the natural frequency decreases, and it approaches the other modal frequencies of the wind turbine generator, leading to resonant coupling. This has caused increasingly serious vibration problems in wind turbine generators, which has become a focus of attention in wind turbine generator design.

[0003] Currently, dampers are often used to reduce vibration in the nacelle platform. However, due to the large damping parameters required for vibration reduction in the nacelle platform, current dampers cannot meet the requirements of space, cost, and reliability at the same time. Summary of the Invention

[0004] This application provides a wind turbine generator set and a damper that can reduce vibration on the nacelle platform while meeting the requirements for space, cost, reliability and service life.

[0005] On one hand, according to the embodiments of this application, a wind turbine generator set is proposed, including a nacelle platform and a damper disposed on the nacelle platform. The damper includes a support member, a mass block, and a first damping assembly. The support member is connected to the nacelle platform, and the mass block is supported on the support member. The mass block has a degree of freedom of movement relative to the support member along a first direction, which is either a horizontal direction or a vertical direction. The first damping assembly is disposed on at least one side of the mass block along the first direction. The first damping assembly includes a first damping element and a first deformable support element. The first damping element is used to provide damping force. The stiffness of the first damping element is less than the stiffness of the first deformable support element. The mass block can press against the first damping element under the support of the first deformable support element, and the first damping element absorbs the kinetic energy of the mass block along the first direction.

[0006] According to one aspect of the embodiments of this application, the damper includes a static state and a damping state; in the static state, the support member balances the weight of the mass block, and the mass block is in static contact with the first damping element; in the damping state, the mass block reciprocates along a first direction, and the mass block can press against the first damping element under the support of the first deformable support member, so that the first damping element absorbs the kinetic energy of the mass block along the first direction.

[0007] According to one aspect of the embodiments of this application, the first damping element includes a plurality of sub-damping elements, and in a stationary state, the mass block is in static contact with each sub-damping element simultaneously.

[0008] According to one aspect of the embodiments of this application, the first damping element includes at least one viscous damping element and an elastic damping element.

[0009] According to one aspect of the embodiments of this application, the first damping element includes an elastic damping element, the elastic damping element includes a housing and an elastic medium filled in the housing; a mass block is provided with a protrusion on one side facing the first damping element, the housing is provided with an opening along a first direction, the protrusion can extend into the housing through the opening and abut against the elastic medium, and in the first direction, the protrusion distance of the protrusion is greater than the maximum amplitude of the cabin platform.

[0010] According to one aspect of the embodiments of this application, the first damping assembly further includes a thrust element, the mass block is connected to the first deformable support element through the thrust element, the thrust element and the mass block move synchronously along a first direction, and a protrusion is disposed on the thrust element.

[0011] According to one aspect of the embodiments of this application, the outer shell has an annular structure, the outer shell encloses to form a receiving space, a first deformable support element is disposed in the receiving space, the opening of the outer shell is annular, and the mass block presses against the elastic medium around the circumference through the opening.

[0012] According to one aspect of the embodiments of this application, the first deformable support element includes at least one of a spring element, a hydraulic support element, and a pneumatic support element.

[0013] According to one aspect of the embodiments of this application, the spring element includes a guide and a spring sleeved on the outer periphery of the guide, a mass block pressing against the spring, and the guide includes a first guide portion and a second guide portion; the first guide portion is connected to the mass block, the second guide portion is connected to a support member, the first guide portion and the second guide portion cooperate to guide the mass block to move relative to the support member in a first direction.

[0014] According to one aspect of the embodiments of this application, the first direction is a vertical direction, the first deformable support element is reused as a support member, and the first deformable support element has a pre-deformation amount along the vertical direction, the pre-deformation amount being used to balance the gravity of the mass block.

[0015] According to one aspect of the embodiments of this application, the first direction is horizontal, the support member includes a support column and a support portion, and a first damping component is disposed on the support column; the support portion is located on one side of the support column, a mass block is supported on the support portion, the mass block can move relative to the support portion in the horizontal direction toward the support column, and simultaneously presses against the first damping element and the first deformable support element.

[0016] According to one aspect of the embodiments of this application, the support part includes a support shaft fixed to the support column and extending in a horizontal direction, a mass block is provided with a connecting hole, the support shaft passes through the connecting hole, and the mass block is supported on the support shaft.

[0017] According to one aspect of the embodiments of this application, the characteristic parameters of the damper are obtained based on the vibration frequency of the cabin platform. The characteristic parameters include the damping, stiffness and mass of the first damping component, and the damping of the first damping element is equal to the damping of the first damping component.

[0018] According to one aspect of the embodiments of this application, the stiffness of the first damping element is determined based on the damping of the first damping element, and the sum of the stiffness of the first deformable support element and the stiffness of the first damping element is equal to the stiffness of the first damping assembly.

[0019] According to one aspect of the embodiments of this application, the mass block includes a box and a plurality of damping particles filled in the box, the damping particles being in contact with each other.

[0020] According to one aspect of the embodiments of this application, a wind turbine generator set includes a generator disposed on a nacelle platform and functional devices, the functional devices being electrically connected to the generator and the functional devices being reused as mass blocks.

[0021] According to one aspect of the embodiments of this application, the damper further includes: a base that supports a support member, a mass block, and a first damping assembly, the base having a degree of freedom of movement along a second direction relative to the cabin platform; and a second damping assembly disposed on one side of the base along the second direction, the second damping assembly absorbing the kinetic energy of the base along the second direction, the second direction being the other of the horizontal and vertical directions.

[0022] According to one aspect of the embodiments of this application, the second damping assembly includes a second damping element and a second deformable support element. The second damping element is used to provide damping force, and the stiffness of the second damping element is less than the stiffness of the second deformable support element. The base can press against the second damping element under the support of the second deformable support element, and the second damping element absorbs the kinetic energy of the mass block along the second direction.

[0023] According to one aspect of the embodiments of this application, the cabin platform includes a first surface and a second surface disposed opposite to each other in a vertical direction, and a damper is disposed on at least one of the first surface and the second surface of the cabin platform.

[0024] According to one aspect of the embodiments of this application, the wind turbine generator set further includes a first sensing component and a control system. The first sensing component is configured to collect vibration signals of the nacelle platform, and the control system is configured to acquire nacelle vibration parameters corresponding to the vibration signals of the nacelle platform, and output an abnormal signal when the nacelle vibration parameters exceed a threshold.

[0025] According to one aspect of the embodiments of this application, the wind turbine generator set further includes a second sensing component for collecting vibration signals of the damper, and the control system is further configured to extract damper vibration parameters corresponding to the vibration signals of the damper, and output a warning signal when the ratio of the damper vibration parameters to the nacelle vibration parameters exceeds a threshold.

[0026] On the other hand, according to an embodiment of this application, a damper is proposed, including a support member, a mass block, and a first damping assembly. The support member is connected to the member to be damped, and the mass block is supported on the support member. The mass block has a degree of freedom of movement along a first direction relative to the support member. The first damping assembly is disposed on at least one side of the mass block along the first direction. The first damping assembly includes a first damping element and a first deformable support element. The first damping element is used to provide damping force, and the stiffness of the first damping element is less than the stiffness of the first deformable support element. The mass block can press against the first damping element under the support of the first deformable support element, and the first damping element absorbs the kinetic energy of the mass block along the first direction.

[0027] The wind turbine generator provided in this application includes a damper mounted on a nacelle platform, comprising a support member, a mass block, and a first damping assembly. The support member bears the gravity load of the mass block, which has a degree of freedom of movement along a first direction relative to the support member and abuts against the first damping assembly to reduce the force exerted by the mass block on the first damping assembly. The first damping assembly includes a first damping element and a first deformable support element. The first damping element provides a high damping force to ensure the damper meets the damping parameters of the nacelle platform. Considering that the first damping element, which can provide a high damping force, has relatively low stiffness, a first deformable support element with higher stiffness is used. This allows the stiffness of the first deformable support element to be coupled with that of the elastic damping element, enabling the mass block to press against the first damping element under the support of the first deformable support element. On the one hand, it can reduce the deformation of the first damping element and improve its service life. On the other hand, it can match the mass parameters, stiffness parameters and damping parameters of the damper to achieve the best vibration reduction effect. Thus, the damper can meet the requirements of space, cost, reliability and service life while realizing vibration reduction of the engine room platform. Attached Figure Description

[0028] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0029] Figure 1 These are schematic diagrams of the structure of wind turbine generator sets provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the damper provided in some embodiments of this application; Figure 3These are schematic diagrams of the structure of wind turbine generator sets provided in other embodiments of this application; Figure 4 This is a schematic diagram of the structure of a damper provided in some other embodiments of this application; Figure 5 This is a schematic diagram of the structure of a damper provided in some embodiments of this application; Figure 6 This is an enlarged view of the first damping component provided in some embodiments of this application; Figure 7 This is a schematic diagram of the structure of the guide component provided in some embodiments of this application; Figure 8 This is an enlarged view of the first damping component provided in some embodiments of this application; Figure 9 This is a structural schematic diagram of a wind turbine generator set provided in some embodiments of this application; Figure 10 This is a schematic diagram of the structure of a damper according to some embodiments of this application; Figure 11 This is a schematic diagram of the structure of a damper provided in some embodiments of this application; Figure 12 This is a schematic diagram of the structure of a damper provided in some embodiments of this application; Figure 13 This is a schematic diagram of the structure of a damper monitoring system provided in some embodiments of this application; Figure 14 This is a logic diagram of a damper monitoring system provided in some embodiments of this application.

[0030] In the attached image: 10-Nacelle platform; 20-Tower; 30-Generator; 40-Impeller; 50-Damper; 60-Damper monitoring system; 1-Support component; 11-Support shaft; 12-Support column; 13-Sliding bearing; 2-Mass block; 21-Box; 22-Damping particle; 3-First damping assembly; 31-First damping element; 311-Outer shell; 312-Elastic medium; 32-First deformable support element; 321-Guide component; 3211-First guide part; 3212-Second guide part; 322-Spring; 33-Thrust element; 4-Base; 5-Second damping assembly; 6-First sensing assembly; 7-Control system; 71-Data processing module; 72-Control module; 73-Signal generator; 8-Second sensing assembly; X - Horizontal direction; Z - Vertical direction.

[0031] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0032] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0033] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the wind turbine generator and damper of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Please see Figure 1 , Figure 1 A schematic diagram of the structure of a wind turbine generator set provided in some embodiments of this application is shown.

[0035] The wind turbine generator set includes a tower 20, a nacelle, a generator 30, and a rotor 40. The nacelle is located at the top of the tower 20 and includes a nacelle platform 10. The generator 30 is mounted on the nacelle platform 10. The rotor 40 includes a hub and multiple blades connected to the hub. The rotor 40 is connected to the shaft of the generator 30 through its hub. When wind power acts on the blades, it drives the entire rotor 40 and the shaft of the generator 30 to rotate, thereby converting wind energy into electrical energy.

[0036] As the power and size of wind turbine generators increase, the flexibility of the nacelle platform 10 increases, and the natural frequency of the nacelle platform 10 decreases. Since the natural frequency of the nacelle platform 10 is close to the other modal frequencies of the wind turbine generator, resonant coupling occurs. The nacelle platform 10 itself has low damping, resulting in significant vibration of the wind turbine generator near the resonant frequency.

[0037] To achieve vibration reduction of the cabin platform 10, there are currently two solutions. The first is to strengthen the structure of the cabin platform 10 so that the natural frequency of the cabin platform 10 avoids the resonant frequency. The second is to install a damper 50 on the cabin platform 10 to suppress low-frequency modal coupling vibration.

[0038] For the first approach, since the modal resonance effect covers a relatively wide frequency range, more material is needed to completely avoid the natural frequency range, making this approach more expensive. For the second approach, the damper 50 currently used in the cabin is a tuned mass damper 50, where the damping element is a weak point.

[0039] Due to the need to consider reliability and performance requirements, the damping elements currently used are generally eddy current damping elements. However, for the engine room platform 10, the required damping parameter reaches 10000 Ns / m. Eddy current damping elements require specialized structural design, such as the need for speed-increasing devices, which increases costs. Furthermore, the overall system space occupies a large area, the structure is complex, the risk of mechanism failure is high, and reliability cannot be guaranteed. If other damping elements are used to provide damping force, since the engine room platform 10 has a low frequency, between 2Hz and 10Hz, the corresponding stiffness of damping elements that meet the damping parameters is relatively low. Under the gravity of the mass block 2 alone, the damping elements will undergo significant deformation or a significant reduction in their service life. Furthermore, the damper 50 requires a perfect match of its mass parameters, stiffness parameters, and damping parameters to function effectively. However, for damping elements that meet the damping parameters, the corresponding stiffness of the damping elements may not match the mass parameters and damping parameters required by the damper 50, resulting in an imbalance of the parameters of the damper 50 and the vibration reduction effect failing to meet expectations.

[0040] To address the aforementioned issues, this application provides a novel damper 50 and a wind turbine generator set. The damper 50 can be used in a wind turbine generator set and serves as a component of the wind turbine generator set to reduce vibrations in the nacelle platform 10 within the wind turbine generator set. Of course, the damper 50 can also be manufactured or sold separately as an independent component.

[0041] Please refer to the following: Figure 1 and Figure 2 , Figure 2 A schematic diagram of the structure of a damper 50 provided in some embodiments of this application is shown.

[0042] This application provides a damper 50 for a wind turbine generator set, wherein the damper 50 is disposed on the nacelle platform 10 of the wind turbine generator set.

[0043] The damper 50 includes a support member 1, a mass block 2, and a first damping assembly 3. The support member 1 is connected to the cabin platform 10. The mass block 2 is supported on the support member 1. The mass block 2 has a degree of freedom of movement relative to the support member 1 along a first direction. The first direction is either the horizontal direction X or the vertical direction Z. The first damping assembly 3 is disposed on at least one side of the mass block 2 along the first direction. The first damping assembly 3 includes a first damping element 31 and a first deformable support element 32. The first damping element 31 is used to provide damping force. The stiffness of the first damping element 31 is less than the stiffness of the first deformable support element 32. The mass block 2 can press against the first damping element 31 under the support of the first deformable support element 32, and the first damping element 31 absorbs the kinetic energy of the mass block 2 along the first direction.

[0044] The damper 50 in this embodiment can bear the gravity load of the mass block 2 through the support member 1. The mass block 2 has a degree of freedom of movement in a first direction relative to the support member 1 and abuts against the first damping assembly 3 to reduce the force exerted by the mass block 2 on the first damping assembly 3. The first damping assembly 3 includes a first damping element 31 and a first deformable support element 32. The first damping element 31 provides a high damping force so that the damper 50 can meet the damping parameters of the cabin platform 10. Considering that the stiffness of the first damping element 31, which can meet the high damping force, is relatively small, the first deformable support element 32, which has a larger stiffness, can be used to couple the stiffness of the first deformable support element 32 with that of the first damping element 31, so that the mass block 2 can press against the first damping element 31 under the support of the first deformable support element 32. On the one hand, it can reduce the deformation of the first damping element 31 and improve the service life of the first damping element 31. On the other hand, it can match the mass parameters, stiffness parameters and damping parameters of the damper 50 to achieve the best vibration reduction effect. Thus, the damper 50 can achieve vibration reduction of the cabin platform 10 while meeting the requirements of space, cost, reliability and service life.

[0045] Please see Figures 1 to 3 , Figure 3 The diagram shows a structural schematic of a wind turbine generator set provided in some other embodiments of this application. For the damper 50 in the embodiments of this application, in some optional embodiments, the nacelle platform 10 includes a first surface and a second surface disposed opposite each other in the vertical direction Z, and the damper 50 is disposed on at least one of the first surface and the second surface of the nacelle platform 10.

[0046] Taking the first surface as the upper surface and the second surface as the lower surface as an example, the damper 50 can be installed on the upper surface of the cabin platform 10 or on the lower surface of the cabin platform 10. It can be adjusted according to the actual structure of the damper 50.

[0047] Optionally, the damper 50 can be installed on the support beam of the nacelle platform 10 with the largest amplitude to achieve the best vibration reduction effect.

[0048] For ease of understanding, the components of the damper 50 and their parameter selection in the embodiments of this application will be described below.

[0049] Support 1 serves as the basic load-bearing component of damper 50, used to balance the weight of mass 2 and provide movement constraints for mass 2, allowing mass 2 to reciprocate only along a first direction, which is either the horizontal direction X or the vertical direction Z. The first direction can be adjusted according to the vibration direction of the cabin platform 10. When the vibration frequency of the cabin platform 10 along the vertical direction Z is coupled with the resonant frequency, the damper 50 can be arranged with the first direction parallel to the vertical direction Z. When the vibration frequency of the cabin platform 10 along the horizontal direction X is coupled with the resonant frequency, the damper 50 can be arranged with the first direction parallel to the horizontal direction X.

[0050] Mass block 2 is used to realize the mass parameters of damper 50. Mass block 2 moves reciprocally along the first direction due to the vibration of the cabin platform 10, transferring kinetic energy to the first damping component 3. In some embodiments, mass block 2 may be composed of steel plate or other high-density materials.

[0051] Optionally, the mass block 2 may include multiple stacked mass block units to reduce the mass requirement of a single mass block unit and facilitate manufacturing. Additionally, adjacent mass block units can be detachably connected to adjust the total mass of the mass block 2 by increasing or decreasing the number of mass block units.

[0052] Please see Figure 4 , Figure 4 A schematic diagram of the structure of a damper 50 provided in some other embodiments of this application is shown.

[0053] In other embodiments, the mass block 2 includes a box 21 and a plurality of damping particles 22 filled in the box 21, with the damping particles 22 in contact with each other.

[0054] By including the box 21 and damping particles 22 in the mass block 2, when the cabin platform 10 vibrates and causes the mass block 2 to move along the first direction, the damping particles 22 will also generate friction and collisions due to relative motion, which can directly consume part of the vibration energy. The mass block 2 can also play a damping role, and together with the damping force of the first damping component 3, a dual energy consumption mechanism is formed, which further improves the vibration reduction efficiency and reduces the damping requirement of the first damping component 3, taking into account the requirements of cost, space and reliability.

[0055] Optionally, the damping particles 22 can be metal particles to enhance the inertia of the mass block 2. The damping particles 22 can also be non-metallic particles, such as rubber particles, ceramic particles, etc., or they can be a mixture of metal and non-metallic particles. The damping particles 22 can be spherical, irregularly shaped, etc.

[0056] In some other embodiments, the wind turbine generator set includes a generator 30 mounted on the nacelle platform 10 and functional components electrically connected to the generator 30. The functional components are reused as a mass block 2 (not shown in the figure). Compared to setting the mass block 2 independently, by reusing the functional components as a mass block 2, the number of components and space occupied by the damper 50 can be significantly reduced.

[0057] Optionally, the functional components may include at least one of a control cabinet, converter cabinet, transformer cabinet, and control box, that is, any functional component that is insensitive to the inherent frequency of the nacelle platform 10 can be reused as the mass block 2. The first damping component 3 is the core component of the damper 50. The first damping component 3 is disposed on at least one side of the mass block 2 along the first direction. It can be disposed on one side of the mass block 2 along the first direction, or it can be disposed on both sides of the mass block 2 along the first direction.

[0058] The first damping assembly 3 includes a first damping element 31 and a first deformable support element 32.

[0059] The first damping element 31 is used to provide damping force, which can convert the kinetic energy of the mass block 2 into heat energy.

[0060] The first deformable support element 32 can be understood as being designed in parallel with the first damping element 31, so that the mass block 2 presses against the first deformable support element 32 and the first damping element 31. The first deformable support element 32 can support the mass block 2, reduce the deformation of the first damping element 31, reduce the failure risk of the first damping element 31, and improve the service life of the first damping element 31. At the same time, the first deformable support element 32 can serve as a stiffness compensation unit for the first damping assembly 3. The first deformable support element 32 can be stiffly coupled with the first damping element 31 so that the mass, stiffness parameters, and damping parameters of the mass block 2 are matched, which is suitable for low-frequency vibration reduction of the cabin platform 10.

[0061] To facilitate understanding of the design concept of this application, the selection principle of each parameter of the damper 50 is explained below.

[0062] In some alternative embodiments, the characteristic parameters of the damper 50 are obtained based on the vibration frequency of the cabin platform 10, and the characteristic parameters include the damping, stiffness and mass of the first damping component 3 and the mass of the mass block 2, and the damping of the first damping element 31 is equal to the damping of the first damping component 3.

[0063] To achieve optimal damping effect, the damping parameter C0, stiffness parameter K0, and mass M of the mass block 2 of the damper 50 can be determined based on the vibration frequency F of the cabin platform 10. The vibration frequency F of the cabin platform 10 can be obtained from the test. When determining the characteristic parameters of the damper 50, for example, the mass M of the mass block 2 can be determined first. Then, based on the vibration frequency F and the mass M of the mass block 2, the stiffness parameter K0 of the damper 50 can be calculated using the formula for resonance frequency, F=(1 / (2π))×√(K / M). Then, the damping parameter C0 of the damper 50 can be calculated by selecting an appropriate damping ratio ζ using the formula for damping ratio, ζ=C / (2√(KM)).

[0064] After determining the damping parameter C0, stiffness parameter K0, and mass M of mass block 2 of damper 50, the damping C and stiffness K of a single first damping component 3 can be determined based on the number n of the first damping components 3 in damper 50. n is a positive integer and greater than or equal to 1, where n×C=C0 and n×K=K0.

[0065] For the first damping assembly 3, there is an order of magnitude difference between the damping of the first deformable support element 32 and the damping Cr of the first damping element 31. Therefore, the damping of the first deformable support element 32 can be ignored, and the damping Cr of the first damping element 31 can be directly selected so that the damping Cr of the first damping element 31 is equal to the damping C of the first damping assembly 3. Thus, the damping force is provided by the first damping assembly 3 to reliably reduce vibration on the cabin platform 10.

[0066] In some alternative embodiments, the stiffness Kr of the first damping element 31 is determined based on the damping Cr of the first damping element 31, and the sum of the stiffness Ks of the first deformable support element 32 and the stiffness Kr of the first damping element 31 is equal to the stiffness K of the first damping assembly 3.

[0067] The stiffness Kr of the first damping element 31 is determined based on the damping Cr of the first damping element 31. This means that, due to the influence of the structure of the first damping element 31 itself, the damping Cr of the first damping element 31 is inherently related to the stiffness Kr. Therefore, when the damping Cr of the first damping element 31 is obtained, the corresponding stiffness Kr of the first damping element 31 can be determined at the same time.

[0068] Then, the stiffness Ks of the first deformable support element 32 can be selected so that the stiffness Ks of the first deformable support element 32 can satisfy: Ks+Kr=K, so that the first deformable support element 32 can make up for the lack of stiffness of the first damping element 31, so that the sum of the stiffness of the first deformable support element 32 and the first damping element 31 can meet the parameter matching requirements of mass, stiffness and damping, thereby improving the vibration reduction effect on the cabin platform 10.

[0069] Please see Figures 1 to 4 To facilitate understanding of the technical solution of this application, the principle and specific structure of the damper 50 will be explained below.

[0070] In some alternative embodiments, the damper 50 includes a static state and a damping state.

[0071] In a static state, the support 1 balances the weight of the mass block 2, and the mass block 2 is in static contact with the first damping element 31.

[0072] In the damping state, the mass block 2 reciprocates along the first direction. The mass block 2 can press against the first damping element 31 under the support of the first deformable support element 32, and the first damping element 31 absorbs the kinetic energy of the mass block 2 along the first direction.

[0073] The static state of the damper 50 can be understood as the state in which the mass block 2 of the damper 50 has no displacement along the first direction. At this time, the mass block 2 is in static contact with the first damping element 31, that is, the two maintain physical contact but there is no pressure between them.

[0074] By ensuring that the damper 50 is stationary and the support 1 completely balances the weight of the mass block 2, the weight of the mass block 2 can be prevented from directly acting on the first damping element 31, which has relatively low stiffness. This significantly reduces the risk of early fatigue and extends the service life. Furthermore, when the cabin platform 10 vibrates, the mass block 2 will reciprocate relative to the support 1 along the first direction under its own inertia, directly acting on the first damping element 31. The absence of gaps between the two causes vibration hysteresis, thus improving the vibration reduction effect.

[0075] In some alternative embodiments, the first damping element 31 includes a plurality of sub-damping elements, and in a stationary state, the mass block 2 is in static contact with each of the sub-damping elements simultaneously.

[0076] By setting multiple sub-damping elements, the damping force can be provided by multiple sub-damping elements together, dispersing the force and achieving vibration reduction of the cabin platform 10. Furthermore, by ensuring that the mass block 2 is in static contact with each sub-damping element simultaneously when the damper 50 is stationary, the state of each sub-damping element can be unified. This allows each sub-damping element to output damping force synchronously in the initial stage of vibration reduction, reducing the risk of skewed vibration of the mass block 2. This ensures that the direction of the damping force remains parallel to the first direction, improving the vibration reduction effect.

[0077] Optionally, the first deformable support element 32 includes multiple sub-support elements, which are spaced apart. By setting multiple sub-support elements to jointly support the mass block 2, the supporting force can be provided by the multiple sub-support elements together, thereby improving the supporting effect. Optionally, the number of sub-support elements can be greater than or equal to four, so as to reduce the performance requirements of individual sub-support elements and achieve a balance between performance and cost while meeting the vibration reduction requirements.

[0078] The number of sub-damping elements and sub-supporting elements can be the same or different. When the number of sub-damping elements is different from the number of sub-supporting elements, the number of sub-damping elements can be greater than the number of sub-supporting elements, or the number of sub-damping elements can be less than the number of sub-supporting elements; both can be adjusted according to actual needs.

[0079] Optionally, when the first damping component 3 is disposed on both sides of the mass block 2 along the first direction, the number of sub-damping elements and the number of sub-supporting elements in the first damping component 3 on both sides can be the same, and the first damping components 3 on both sides can be symmetrically distributed on both sides of the mass block 2 along the first direction, so as to make it easier to ensure that the damping force direction can always remain parallel to the first direction and improve the vibration reduction effect.

[0080] In some alternative embodiments, the first damping element 31 includes at least one of a viscous damping element and an elastic damping element.

[0081] The first damping element 31 may include a viscous damping element, which may include a liquid viscous damping element, an electromagnetic viscous damping element, etc.

[0082] Taking a liquid viscosity damping element as an example, the first damping element 31 may include a housing, a highly viscous liquid medium filled within the housing, and a piston. The piston is connected to the mass block 2, and a damping hole is provided through the piston along a first direction. When the cabin platform 10 vibrates, causing the mass block 2 to move along the first direction, the mass block 2 can drive the piston to move along the first direction, driving the flow of the highly viscous liquid medium. The pressure energy and frictional losses of the flowing highly viscous liquid medium are converted into heat energy. Optionally, the highly viscous liquid medium can be silicone oil.

[0083] Please see Figure 5 and Figure 6, Figure 5 This application shows a schematic diagram of the structure of a damper 50 provided in some other embodiments. Figure 6 A partially enlarged view of a damper 50 provided in some embodiments of this application is shown.

[0084] The first damping element 31 may also include an elastic damping element, such as a rubber damping element or a polyurethane damping element. The elastic damping element has a high damping coefficient to meet the damping parameters of the cabin platform 10. Furthermore, the elastic damping element occupies very little space, has a low overall cost, and has a low risk of failure under small deformations, thus well meeting the requirements for space, cost, and service life.

[0085] When the first damping element 31 includes multiple sub-damping elements, the types of the multiple sub-damping elements can be the same or different. For example, the multiple sub-damping elements can all be viscous damping elements, or the multiple sub-damping elements can all be elastic damping elements, or the multiple sub-damping elements can be partially viscous damping elements and partially elastic damping elements, all of which can be adjusted according to actual needs.

[0086] In some alternative embodiments, the elastic damping element further includes a housing 311 and an elastic medium 312 filled within the housing 311. The mass block 2 has a protrusion protruding from the side facing the first damping assembly 3, and the housing 311 has an opening along a first direction. The protrusion can extend into the housing 311 through the opening and abut against the elastic medium 312. In the first direction, the protrusion distance of the protrusion is greater than the maximum amplitude of the cabin platform 10.

[0087] Since the elastic medium 312 has low stiffness, by setting up a shell 311 and filling the elastic medium 312 inside the shell 311, the free deformation of the elastic medium 312 under the contact of the mass block 2 can be restricted by the shell 311, thus ensuring the damping characteristics of the first damping element 31 and improving the service life of the first elastic damping unit.

[0088] When the elastic medium 312 is filled into the outer shell 311, by providing a protrusion on the side of the mass block 2 facing the first damping component 3, and making the protrusion distance of the protrusion greater than the maximum amplitude of the cabin platform 10, the risk of rigid collision between the mass block 2 and the outer shell 311 can be reduced, and it can be ensured that the protrusion can always extend into the outer shell 311 and abut against the elastic medium 312 within the maximum stroke of the mass block 2 vibration, so as to achieve continuous vibration reduction in the full amplitude range and improve the reliability of the damper 50.

[0089] To facilitate the protrusion of the mass block 2 on the side facing the first damping component 3, in some optional embodiments, the first damping component 3 further includes a thrust element 33. The mass block 2 is connected to the first deformable support element 32 through the thrust element 33. The thrust element 33 and the mass block 2 move synchronously in the first direction, and the protrusion is disposed on the thrust element 33.

[0090] The thrust element 33 can be used as a component of the first damping assembly 3 to connect the mass block 2 and the first deformable support element 32. The thrust element 33 may include a first surface and a second surface arranged along a first direction. The first surface is arranged towards the mass block 2, and the second surface is arranged towards the first damping element 31 and the first deformable support element 32. The second surface is connected to the first deformable support element 32 and has a protrusion corresponding to the first damping element 31.

[0091] When the damper 50 is in the vibration reduction state, the thrust element 33 and the mass block 2 move synchronously along the first direction. The mass block 2 drives the thrust element 33 to move, and the convex part of the thrust element 33 presses against the first damping element 31, thereby achieving vibration reduction of the cabin platform 10. Compared with the form of setting the convex part on the mass block 2, by setting the convex part on the thrust element 33, the mass block 2 only needs to reserve the connection part of the thrust element 33, thereby simplifying the structure of the mass block 2 and reducing the cost of the damper 50.

[0092] In some alternative embodiments, the outer shell 311 has an annular structure, and the outer shell 311 encloses and forms a receiving space. The first deformable support element 32 is disposed in the receiving space. The opening of the outer shell 311 is annular, and the mass block 2 presses against the elastic medium 312 around the circumference through the opening.

[0093] By arranging the outer shell 311 into a ring shape and filling the elastic medium 312 inside the outer shell 311, the elastic medium 312 can be constrained around its entire circumference by the outer shell 311, thereby improving the service life of the first damping element 31. Furthermore, by placing the first deformable support element 32 within the accommodating space enclosed by the outer shell 311, the mass block 2 can be more stably supported by the first deformable support element 32 and pressed against the first damping element 31 around its entire circumference, resulting in uniform force on the first damping element 31 and improving vibration damping stability.

[0094] Optionally, when the first deformable support element 32 is disposed within the receiving space enclosed by the housing 311, the first damping element 31 and the first deformable support element 32 can be disposed as an integral unit when designing and manufacturing the damper 50, so as to simplify the structure of the damper 50.

[0095] Optionally, the outer shell 311 includes a first end and a second end arranged along the thickness direction. The first end is provided with an opening, and the cross-sectional area of ​​the first end is smaller than that of the second end. This can improve the stability of the first damping component 3 while reducing the weight of the first damping component 3 and reducing the structural load of the cabin platform 10.

[0096] In some alternative embodiments, the first deformable support element 32 includes at least one of a spring element, a hydraulic support element, and a pneumatic support element. The above structure can provide high stiffness, and the dimensions of the first deformable support element 32 are adjustable along the first direction so that the first deformable support element 32 can deform during the vibration of the mass block 2, thereby improving the reliability of the damper 50.

[0097] Please see Figures 1 to 7 , Figure 7 A schematic diagram of the guide member 321 provided in some embodiments of this application is shown. In one optional embodiment, the spring element includes the guide member 321 and a spring 322 sleeved on the outer periphery of the guide member 321. The mass block 2 presses against the spring 322. The guide member 321 includes a first guide portion 3211 and a second guide portion 3212. The first guide portion 3211 is connected to the mass block 2, and the second guide portion 3212 is connected to the support member 1. The first guide portion 3211 and the second guide portion 3212 cooperate to guide the mass block 2 to move relative to the support member 1 along a first direction.

[0098] The spring element provides stiffness through spring 322, which has a stiffness greater than that of the first damping element 31. The guide 321 is used to constrain the movement direction of the mass block 2 and reduce the risk of lateral bending when the spring 322 is compressed or stretched, thereby guiding the mass block 2 to move relative to the support member 1 in the first direction and pressing against the first damping element 31 under the support of the spring 322, ensuring the function of the damper 50.

[0099] Optionally, one of the first guide portion 3211 and the second guide portion 3212 can be configured as an inner sleeve and the other as an outer sleeve. Specifically, the first guide portion 3211 can be configured as an inner sleeve and the second guide portion 3212 as an outer sleeve, or vice versa. The inner sleeve and the outer sleeve are coaxially arranged, and their cooperation guides the mass block 2 to move relative to the support member 1 along the first direction.

[0100] Optionally, the cross-sections of the inner sleeve and outer sleeve can be circular, rectangular, or other regular or irregular shapes, which can be set according to actual needs.

[0101] Alternatively, in addition to setting the first guide portion 3211 and the second guide portion 3212 as sleeves, the first guide portion 3211 and the second guide portion 3212 can also adopt other similar guide structures, such as guide rail structures, to realize the movement guidance of the mass block 2 along the first direction.

[0102] Please see Figures 1 to 8 , Figure 8 An enlarged view of the first damping component 3 provided in some other embodiments of this application is shown. In some alternative embodiments, the first direction is the vertical direction Z, the first deformable support element 32 is reused as the support member 1, and the first deformable support element 32 has a pre-deformation amount along the vertical direction Z, the pre-deformation amount being used to balance the gravity of the mass block 2.

[0103] When the first direction is the vertical direction Z, i.e., when the damper 50 achieves vibration reduction along the vertical direction Z of the cabin platform 10, the first deformable support element 32 can be reused as the support element 1. By giving the first deformable support element 32 a pre-deformation amount along the vertical direction Z, after the mass block 2 is installed, the mass block 2 will deform the first deformable support element 32 under its own weight, and when the pre-deformation amount of the first deformable support element 32 balances the weight of the mass block 2, the mass block 2 will just be in contact with the first damping element 31.

[0104] Specifically, since the pre-deformation of the first deformable support element 32 is used to balance the weight of the mass block 2, the pre-deformation L of the first deformable support element 32 can be calculated according to the following formula: L=M / Ks. By utilizing the pre-deformation of the first deformable support element 32 to balance the weight of the mass block 2 during vertical Z-direction vibration reduction, the structure of the first damping assembly 3 can be simplified, and the reliability and service life of the first damping assembly 3 can be improved.

[0105] The deformation direction of the pre-deformation amount can be adjusted according to the installation position of the damper 50 on the cabin platform 10. Taking the damper 50 installed on the upper surface of the cabin platform 10 as an example, before the installation of the mass block 2, the first deformable support element 32 is in a free state, and the upper end of the deformable support element is higher than the first damping element 31 along the first direction. When the mass block 2 is installed, due to gravity, the first deformable support element 32 will be compressed until the upper end surface of the first deformable support element 32 is flush with the upper end surface of the first damping element 31. The mass block 2 contacts both the first damping element 31 and the first deformable support element 32 simultaneously through the thrust element 33. Once the cabin platform 10 vibrates under external excitation, the vibration will be transmitted to the damper 50, thereby causing the thrust element 33 to move through the mass block 2, pushing the first damping element 31 and the first deformable support element 32 to reciprocate along the vertical direction Z, thereby realizing the vibration reduction function of the damper 50.

[0106] Please see Figures 1 to 10 , Figure 9 This application shows a schematic diagram of the structure of a wind turbine generator set according to some other embodiments. Figure 10 A schematic diagram of the structure of a damper 50 according to other embodiments of this application is shown.

[0107] In some alternative embodiments, the first direction is the horizontal direction X, the support member 1 includes a support column 12 and a support part, the first damping component 3 is disposed on the support column 12; the support part is located on one side of the support column 12, the mass block 2 is supported on the support part, the mass block 2 can move relative to the support part in the horizontal direction X toward the support column 12, and simultaneously press against the first damping element 31 and the first deformable support element 32.

[0108] The damper 50 can also be used for lateral vibration reduction of the nacelle platform 10. In this case, the first direction can be the horizontal direction X, and the first direction is perpendicular to the vertical direction Z and the axial direction of the main shaft of the wind turbine, so as to improve the lateral vibration reduction effect on the nacelle platform 10.

[0109] When the first direction is horizontal (X), the support member 1 can be configured as a support section and a support column 12 to balance the weight of the mass block 2 through the support section. The first deformable support element 32 may not have a pre-deformation amount, that is, the end face of the first deformable support element 32 is parallel to the end face of the first damping element 31. When the mass block 2 moves relative to the support member 1 along the horizontal direction (X), it can simultaneously press against the first damping element 31 and the first deformable support element 32, so that the first damping element 31 is deformed under the support of the first deformable support element 32, thereby achieving lateral vibration reduction of the cabin platform 10.

[0110] In some embodiments, the support can be configured as a support base, and the mass block 2 is placed on the support base (not shown in the figure). The surface of the support base facing the mass block 2 can be configured as a friction surface, so that in addition to supporting the mass block 2 through the support base, the kinetic energy of the mass block 2 can be converted into heat energy consumption by moving the mass block 2 relative to the support base, thereby improving the vibration reduction effect on the cabin platform 10.

[0111] Please see Figures 1 to 11 , Figure 11 A schematic diagram of the structure of a damper 50 provided in some embodiments of this application is shown.

[0112] In other embodiments, the support includes a support shaft 11 fixed to the support column 12 and extending in the horizontal direction X. The mass block 2 is provided with a connection hole, the support shaft 11 passes through the connection hole, and the mass block 2 is supported on the support shaft 11, so as to simplify the structure of the support member 1, reduce the weight and space occupied by the damper 50, and improve the applicability of the damper 50.

[0113] Optionally, the support columns 12 are arranged in pairs at both ends of the support shaft 11, and a first damping component 3 is provided on each of the support columns 12 on both sides. The mass block 2 is arranged between the first damping components 3 on both sides along the first direction.

[0114] Optionally, the support member 1 further includes a sliding bearing 13, which is coaxially disposed between the connecting hole of the mass block 2 and the support shaft 11. The sliding bearing 13 includes an inner circumferential surface and an outer circumferential surface. The outer circumferential surface of the sliding bearing 13 is connected to the support part, and the inner circumferential surface mates with the support shaft 11, thereby reducing the wear of the mass block 2 and the support shaft 11 and improving the reliability and service life of the damper 50.

[0115] Please see Figures 1 to 12 , Figure 12 A schematic diagram of the structure of a damper 50 provided in some embodiments of this application is shown.

[0116] In some alternative embodiments, the damper 50 further includes a base 4 and a second damping assembly 5. The base 4 supports the support member 1, the mass block 2 and the first damping assembly 3. The base 4 has a degree of freedom of movement relative to the cabin platform 10 along a second direction. The second damping assembly 5 is disposed on one side of the base 4 along the second direction. The second damping assembly 5 absorbs the kinetic energy of the base 4 along the second direction, which is the other of the horizontal direction X and the vertical direction Z.

[0117] By incorporating a second damping component 5, the nacelle platform 10 can achieve vibration reduction along a second direction, which is the other of the horizontal X and vertical Z directions. The first damping component 3 and the second damping component 5 can cooperate to decouple the vibration of the nacelle platform 10, thereby achieving vibration reduction in both the horizontal X and vertical Z dimensions of the nacelle platform 10, improving the vibration reduction effect on the nacelle platform 10, and making it applicable to different types of wind turbine generators and vibration reduction in different operating environments, thus improving its applicability.

[0118] In actual design, vibration modal simulation and key excitation load simulation of the entire machine can be performed first to determine potential risk resonance modes. The risk resonance mode shape is then determined to be either unidirectional or bidirectional. If the risk resonance mode shape is unidirectional, damper 50 equipped with the first damping component 3 can be used for vibration reduction. If the risk resonance mode shape is bidirectional, damper 50 equipped with both the first damping component 3 and the second damping component 5 can be used for vibration reduction, thus better meeting the vibration reduction requirements of the engine room platform 10 and improving the vibration reduction effect.

[0119] In some alternative embodiments, the second damping assembly 5 includes a second damping element and a second deformable support element. The second damping element is used to provide damping force. The stiffness of the second damping element is less than that of the second deformable support element. The base 4 can press against the second damping element under the support of the second deformable support element, and the second damping element absorbs the kinetic energy of the mass block 2 along the second direction.

[0120] Similar to the first damping assembly 3, the second damping assembly 5 may include a second damping element and a second deformable support element. The second damping element provides high damping force so that the damper 50 can meet the damping parameters of the cabin platform 10. Considering that the stiffness of the second damping element that can provide high damping force is relatively small, by setting a second deformable support element with greater stiffness, the stiffness of the second deformable support element can be coupled with that of the elastic damping element, so that the mass block 2 can press against the second damping element under the support of the second deformable support element. On the one hand, this can reduce the deformation of the second damping element and improve its service life; on the other hand, it can match the mass parameters, stiffness parameters, and damping parameters of the damper 50 to achieve the best vibration reduction effect. Thus, the damper 50 can meet the requirements of space, cost, reliability, and service life while achieving vibration reduction of the cabin platform 10.

[0121] Optionally, the structure of the second damping component 5 may be the same as that of the first damping component 3 to simplify the structure of the damper 50.

[0122] Please see Figures 1 to 14 , Figure 13 This application shows a schematic diagram of the structure of a damper monitoring system 60 provided in some embodiments. Figure 14 A logic diagram of a damper monitoring system 60 provided in some embodiments of this application is shown.

[0123] In some alternative embodiments, the wind turbine generator set further includes a damper monitoring system 60, which includes a first sensing component 6 and a control system 7. The first sensing component 6 is configured to collect vibration signals of the nacelle platform 10, and the control system 7 is configured to acquire nacelle vibration parameters corresponding to the vibration signals of the nacelle platform 10, and output an abnormal signal when the nacelle vibration parameters exceed a threshold.

[0124] By setting up a damper monitoring system 60, the first sensing component 6 is configured to collect vibration signals from the nacelle platform 10 to obtain real-time vibration parameters of the nacelle platform 10. Once the vibration parameters of the nacelle platform 10 exceed the threshold, the control system 7 can output an abnormal signal to perform logical judgment and protection on the wind turbine generator set, and remotely send the abnormal signal to the client for warning, thereby improving the operational reliability of the wind turbine generator set and ensuring operational safety.

[0125] Optionally, the first sensing component 6 can be installed on the cabin platform 10. The first sensing component 6 can be configured as a vibration sensor to measure the vibration of the cabin platform 10.

[0126] Optionally, the control system 7 includes a data processing module 71, a control module 72, and a signal generator 73. The nacelle vibration parameters include vibration amplitude. The data processing module 71 is configured to filter the vibration signal collected by the first sensing component 6 to obtain the key frequency vibration amplitude of the nacelle vibration. The control module 72 is configured to receive the key frequency vibration amplitude extracted by the data processing module 71 and make a judgment according to the operating logic. When the vibration amplitude exceeds the threshold, the control module 72 generates a signal through the signal generator 73 to control the wind turbine generator to take corresponding power limiting or shutdown protection measures.

[0127] In some alternative embodiments, the damper monitoring system 60 further includes a second sensing component 8 for acquiring vibration signals of the damper 50, and the control system 7 is further configured to extract vibration parameters of the damper 50 corresponding to the vibration signals of the damper 50, and output an early warning signal when the ratio of the vibration parameters of the damper 50 to the vibration parameters of the nacelle exceeds a threshold.

[0128] The second sensing component 8 is configured to collect vibration signals from the damper 50 to obtain real-time vibration parameters of the damper 50. By comparing the vibration signals collected by the first sensing component 6 and the second sensing component 8, the degree of abnormality is defined according to the deviation between the two. If the deviation exceeds the limit, it indicates that the damper 50 is malfunctioning. Therefore, by outputting a warning signal when the ratio of the damper 50 vibration parameters to the nacelle vibration parameters exceeds a threshold, relevant logic protection can be implemented for the wind turbine generator set, improving the reliability of its operation.

[0129] Optionally, the second sensing component 8 can be mounted on the mass block 2 of the damper 50. The second sensing component 8 can be configured as a vibration sensor to measure the vibration of the damper 50.

[0130] Optionally, the first sensing component 6 and the second sensing component 8 work together to determine the frequency and damping characteristic parameters of the damper 50. The vibration signals collected by the two sensing components enter the data processing module 71, which evaluates the relationship between the two vibration signals. The vibration characteristic parameters include vibration frequency and vibration amplitude. The main evaluation is the ratio of the vibration frequency of the nacelle platform 10 to the vibration frequency of the damper 50, and / or the ratio of the vibration amplitude of the nacelle platform 10 to the vibration amplitude of the damper 50. The degree of abnormality is defined based on the deviation of this ratio from the standard value. For example, when the deviation of the ratio from the standard value exceeds 10%, it will be regarded as a signal abnormality. Thus, the control module 72 can control the wind turbine generator to perform relevant logic judgments and carry out protection. At the same time, the abnormal signal is sent to the remote client through the signal generator for remote early warning.

[0131] In summary, the damper 50 in this embodiment of the application uses a first damping element 31 and a first deformable support element 32 for damping and vibration reduction. The first damping element 31 provides damping force, and the coupling of the first damping element 31 and the first deformable support element 32 provides stiffness. The mass block 2 can press against the first damping element 31 under the support of the first deformable support element 32, and the first damping element 31 absorbs the kinetic energy of the mass block 2 along the first direction, thereby improving the service life of the damper 50. Furthermore, it can match the mass parameters, stiffness parameters, and damping parameters of the damper 50, thereby achieving reliable vibration reduction of the cabin platform 10 while meeting the requirements of space, cost, reliability, and service life.

[0132] The wind turbine generator set in this embodiment includes a damper 50, which enables reliable vibration reduction of the nacelle platform 10, thereby improving the reliability and service life of the wind turbine generator set and making it easier to apply.

[0133] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wind turbine generator system characterized by, The application relates to a damping device for a nacelle platform (10), comprising: a nacelle platform (10); a damper (50) arranged on the nacelle platform (10), the damper (50) comprising: a support member (1) connected to the nacelle platform (10); a mass block (2) carried on the support member (1), the mass block (2) having a movement freedom degree along a first direction relative to the support member (1), the first direction being one of a horizontal direction (X) and a vertical direction (Z); a first damping assembly (3) arranged on at least one side of the mass block (2) along the first direction, the first damping assembly (3) comprising a first damping element (31) and a first deformable support element (32), the first damping element (31) being used for providing a damping force, the rigidity of the first damping element (31) being smaller than the rigidity of the first deformable support element (32), the mass block (2) being capable of pressing against the first damping element (31) under the support of the first deformable support element (32) and making the first damping element (31) absorb the kinetic energy of the mass block (2) along the first direction.

2. A wind power plant according to claim 1, characterised in that The damper (50) comprises a static state and a damping state; in the static state, the support member (1) balances the gravity of the mass block (2), and the mass block (2) is in static contact with the first damping element (31); in the damping state, the mass block (2) reciprocates along the first direction, and the mass block (2) is capable of pressing against the first damping element (31) under the support of the first deformable support element (32) and making the first damping element (31) absorb the kinetic energy of the mass block (2) along the first direction.

3. The wind power plant according to claim 2, characterized in that The first damping element (31) comprises a plurality of sub-damping elements, and in the static state, the mass block (2) is in static contact with each of the sub-damping elements.

4. The wind power plant according to claim 1, characterized in that The first damping element comprises at least one of a viscous damping element and an elastic damping element.

5. A wind power plant according to claim 4, characterised in that The first damping element (31) comprises an elastic damping element, and the elastic damping element comprises an outer shell (311) and an elastic medium (312) filled in the outer shell (311); one side of the mass block (2) towards the first damping element (31) is provided with a protruding portion, the outer shell (311) is provided with an opening along the first direction, the protruding portion can be inserted into the outer shell (311) through the opening and abut against the elastic medium (312), and in the first direction, the protruding distance of the protruding portion is greater than the maximum amplitude of the nacelle platform (10).

6. A wind power plant according to claim 5, characterised in that The first damping assembly (3) further comprises a thrust element (33), the mass block (2) is connected to the first deformable support element (32) through the thrust element (33), the thrust element (33) moves synchronously with the mass block (2) along the first direction, and the protruding portion is arranged on the thrust element (33).

7. The wind power plant according to claim 5, characterized in that The shell (311) is annular, and the shell (311) encloses a containing space, the first deformable supporting element (32) is arranged in the containing space, and an opening of the shell (311) is annular, and the mass block (2) is pressed against the elastic medium (312) through the opening.

8. The wind power plant according to claim 1, characterized in that The first deformable supporting element (32) comprises at least one of a spring element, a hydraulic supporting element and a pneumatic supporting element.

9. The wind power plant according to claim 8, characterized in that The spring element comprises a guide (321) and a spring (322) sleeved outside the guide (321), the mass block (2) is pressed against the spring (322), and the guide (321) comprises a first guide part (3211) and a second guide part (3212). The first guide part (3211) is connected with the mass block (2), the second guide part (3212) is connected with the support (1), the first guide part (3211) and the second guide part (3212) are matched, and the mass block (2) is guided to move relative to the support (1) in the first direction.

10. The wind power generating unit according to claim 1, characterized by The first direction is the vertical direction (Z), the first deformable supporting element (32) is multiplexed as the support (1), the first deformable supporting element (32) has a pre-deformation amount in the vertical direction (Z), and the pre-deformation amount is used for balancing the gravity of the mass block (2).

11. The wind power generating unit according to claim 1, characterized by The first direction is the horizontal direction (X), the support (1) comprises a support column (12) and a support part, and the first damping assembly (3) is arranged on the support column (12). The support part is located on one side of the support column, the mass block (2) is carried on the support part, the mass block (2) can move relative to the support part in the horizontal direction (X) towards the support column (12), and at the same time, the mass block (2) is pressed against the first damping element (31) and the first deformable supporting element (32).

12. A wind power plant according to claim 11, characterised in that The support part comprises a support shaft (11) fixed to the support column (12) and arranged in extension in the horizontal direction (X), the mass block (2) is provided with a connecting hole, and the support shaft (11) is arranged in the connecting hole and carries the mass block (2) on the support shaft (11).

13. The wind power generating unit according to claim 1, characterized by Characteristic parameters of the damper (50) are obtained based on a vibration frequency of the cabin platform (10), the characteristic parameters comprise damping, stiffness of the first damping assembly (3) and mass of the mass block (2), and the damping of the first damping element (31) is equal to the damping of the first damping assembly (3).

14. A wind power plant according to claim 13, characterised in that The stiffness of the first damping element (31) is determined based on the damping of the first damping element (31), and the sum of the stiffness of the first deformable supporting element (32) and the stiffness of the first damping element (31) is equal to the stiffness of the first damping assembly (3).

15. A wind power plant according to claim 1, characterised in that The mass block (2) comprises a box body (21) and a plurality of damping particles (22) filled in the box body (21), and the damping particles (22) are in contact with each other.

16. The wind power generating unit according to claim 1, characterized by The wind turbine generator set comprises a generator (30) and functional devices disposed on the nacelle platform (10), the functional devices are electrically connected with the generator (30), and the functional devices are multiplexed as the mass block.

17. The wind power generating unit according to claim 1, characterized by The damper (50) further comprises: a base (4) carrying the support (1), the mass block (2) and the first damping assembly (3), the base (4) has a movement freedom degree along a second direction relative to the nacelle platform (10); a second damping assembly (5) disposed on one side of the base (4) along the second direction, the second damping assembly (5) absorbs kinetic energy of the base (4) along the second direction, and the second direction is the other of the horizontal direction (X) and the vertical direction (Z).

18. The wind power plant according to claim 17, characterized in that The second damping assembly (5) comprises a second damping element and a second deformable support element; The second damping element is used for providing a damping force, the rigidity of the second damping element is smaller than that of the second deformable support element, the base (4) can be pressed against the second damping element under the support of the second deformable support element, and the second damping element absorbs kinetic energy of the mass block (2) along the second direction.

19. The wind power generating unit according to claim 1, characterized by The nacelle platform (10) comprises a first surface and a second surface oppositely arranged along the vertical direction (Z), and the damper (50) is disposed on at least one of the first surface and the second surface of the nacelle platform (10).

20. The wind power generating unit according to claim 1, characterized by The wind turbine generator set further comprises a first sensing assembly (6) configured to collect a vibration signal of the nacelle platform (10), and a control system (7) configured to obtain a nacelle vibration parameter corresponding to the vibration signal of the nacelle platform (10) and output an abnormal signal when the nacelle vibration parameter exceeds a threshold value.

21. The wind power unit according to claim 20, characterized in that The wind turbine generator set further comprises a second sensing assembly (8) for collecting a vibration signal of the damper (50), and the control system (7) is further configured to extract a damper (50) vibration parameter corresponding to the vibration signal of the damper (50) and output a warning signal when a ratio of the damper (50) vibration parameter to the nacelle vibration parameter exceeds a threshold value.

22. A damper, characterized by Comprise: a support (1) connected to a to-be-damped part; a mass block (2) carried on the support (1), the mass block (2) having a movement freedom degree along a first direction relative to the support (1); A first damping assembly (3) is arranged on at least one side of the mass (2) along the first direction. The first damping assembly (3) comprises a first damping element (31) and a first deformable support element (32). The first damping element (31) is configured to provide a damping force. The stiffness of the first damping element (31) is less than the stiffness of the first deformable support element (32). The mass (2) is supported by the first deformable support element (32) and is configured to press against the first damping element (31). The first damping element (31) is configured to absorb kinetic energy of the mass (2) along the first direction.

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