Tuned mass damper, structural assembly for a wind turbine generator and wind turbine generator

Abstract

The application provides a tuned mass damper, a structural assembly of a wind turbine generator and a wind turbine generator. The tuned mass damper comprises a base, an elastic body and a main mass module arranged on the base, and a sub-mass module connected with the main mass module. The main mass module comprises a first mass body, the elastic body comprises a first elastic body arranged between the first mass body and the base, and a first connecting member connects the first mass body, the first elastic body and the base (100). The sub-mass module is detachably connected with the main mass module on the side opposite to the base, so as to adjust the mass of the tuned mass damper, thereby being capable of adapting to different platform requirements.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, specifically to a tuned mass damper, a structural component of a wind turbine generator set, and a wind turbine generator set. Background Technology

[0002] As the capacity of wind turbine generators continues to increase, the tower height and blade length of these generators are also growing. As slender and flexible structures, the tower and blades are highly susceptible to resonance with low-frequency components of wind loads or mechanical excitations, leading to a sharp amplification of vibration amplitude. Continuous tower or blade oscillation can cause critical components such as welds and bolted connections to experience alternating stresses. Long-term cyclic loading can trigger fatigue damage, shortening the lifespan of the wind turbine generator.

[0003] In existing technologies, tuned mass dampers are typically installed in wind turbine generators to absorb frequencies and reduce vibrations. Through the principle of mass tuning, they absorb the polluting energy generated by the platform, thereby ensuring the stability of the unit. However, with the increasing capacity of individual wind turbine generators and the growing variety of turbine models, the requirements and matching degrees for unit modules are becoming increasingly stringent, considering the adaptability to different platforms and regions. Existing tuned mass dampers usually have fixed damping coefficients, making it difficult to adapt to the vibration reduction needs of different models or capacities of wind turbines. Utility Model Content

[0004] This application provides a tuned mass damper, a structural component of a wind turbine generator set, and a wind turbine generator set, thereby adapting to the vibration reduction requirements of different platforms.

[0005] The tuned mass damper provided according to an embodiment of this application includes: a base; a main mass module disposed on the base, the main mass module including a first mass body; an elastic body including a first elastic body disposed between the first mass body and the base, a first connector connecting the first mass body, the first elastic body and the base; and a sub-mass module detachably connected to the main mass module on a side opposite to the base, the sub-mass module having a weight less than the main mass module, used to adjust the mass of the tuned mass damper.

[0006] According to one aspect of this application, the elastic body further includes a second elastic body, a first side of the first mass body faces the base, a second side of the first mass body is opposite to the first side of the first mass body, the second elastic body is disposed on the second side of the first mass body, and the second elastic body, the first mass body, the first elastic body and the base are interconnected by a first connector.

[0007] According to one aspect of this application, the main mass module further includes a second mass body, which is disposed on at least one of the first side and the second side of the first mass body and is fixedly connected to the first mass body. The second mass body has a guide sleeve corresponding to the elastic body, and the elastic body is located in the guide sleeve accordingly.

[0008] According to one aspect of this application, the main mass module further includes a third mass body, which is fixedly connected to the first mass body on a first side of the first mass body, and the third mass body includes a central mass block and a plurality of mass arms extending radially around the central mass block; and / or, the main mass module further includes a fourth mass body, which is fixedly connected to the first mass body on a second side of the first mass body, and the third mass body includes a central mass block and a plurality of mass arms extending radially around the central mass block.

[0009] According to one aspect of this application, the first elastic body is provided in a plurality of spaced-apart arrangements around the edge region of a first side of the first mass body, and the plurality of mass arms of the third mass body extend between two adjacent first elastic bodies; and / or, the second elastic body is provided in a plurality of spaced-apart arrangements around the edge region of a second side of the first mass body, and the plurality of mass arms of the fourth mass body extend between two adjacent second elastic bodies.

[0010] According to one aspect of this application, the base includes a supporting base plate and a plurality of protrusions disposed on the supporting base plate, wherein the first elastic body is disposed on the protrusions such that a first side of the first mass body is spaced apart from the supporting base plate by a predetermined distance.

[0011] According to one aspect of this application, the first mass body is provided with a first connecting hole, the first connecting member passes through the first connecting hole and is connected to the base, and the tuned mass damper further includes a limiting tube sleeved on the first connecting member. The limiting tube is disposed in the connecting hole and extends through the elastic body and the first mass body to control the pre-compression amount of the elastic body.

[0012] According to one aspect of this application, the limiting tube includes a first limiting tube segment and a second limiting tube segment arranged sequentially along the length direction of the first connector, wherein the length of the first limiting tube segment is greater than the length of the second limiting tube segment, and at least a portion of the second limiting tube segment is located outside the first mass body.

[0013] According to one aspect of this application, a wear-resistant sleeve is provided on the inner wall of the first connecting hole of the first mass body.

[0014] According to one aspect of this application, both the first elastomer and the second elastomer include a rubber body, a metal support plate and a metal gasket respectively disposed on a first side and a second side of the rubber body, and the rubber body, the metal support plate and the metal gasket are vulcanized and fixedly connected.

[0015] According to one aspect of this application, the submass module includes a plurality of submass bodies that are stacked and / or spliced ​​together.

[0016] According to one aspect of this application, at a position corresponding to the first connector, the sub-mass module is provided with a through hole for adjusting the compression amount of the elastomer by operating through the first connector.

[0017] According to one aspect of this application, the main mass module and the elastomer constitute a mounting module, and the tuned mass damper includes a plurality of the mounting modules and is located between the base and the sub-mass module.

[0018] According to one aspect of this application, the first connector can adjust the amount of compression of the elastomer.

[0019] According to another aspect of this application, a structural component for a wind turbine generator is provided, the structural component including a structural body and a tuned mass damper as described above, mounted on the structural body.

[0020] According to another aspect of this application, a wind turbine generator set is provided, the wind turbine generator set including a tower, a nacelle mounted on the tower, and a tuned mass damper as described above, the tuned mass damper being installed in the tower or the nacelle.

[0021] According to another aspect of this application, the wind turbine generator set includes a plurality of the tuned mass dampers, the plurality of tuned mass dampers having different resonant directions.

[0022] According to the technical solution of this application, the damper adopts a mass block combination form, which can be arbitrarily combined into dampers of different masses to adapt to the needs of different platforms. The frequency absorption and vibration reduction part of the damper is made of rubber material, which can not only solve the stiffness problem, but also the damping problem, integrating stiffness and damping into one.

[0023] The damper according to the embodiments of this application is small in size, has good space utilization, and has a compact structure, which can meet the current needs of compact wind power generation scenarios.

[0024] The modular design of the damper according to the embodiments of this application can achieve multiple uses in one unit through high stacking, increased interfaces, etc., and can be conveniently used in different locations. It can solve the problem of unidirectional resonance in a platform or a certain component. Attached Figure Description

[0025] The above and / or other objects and advantages of this application will become clearer from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 This is a perspective view of a tuned mass damper according to an embodiment of this application;

[0027] Figure 2 This is a top view of a tuned mass damper according to an embodiment of this application;

[0028] Figure 3 It is along Figure 1 A sectional view taken by line AA in the diagram;

[0029] Figure 4 It is along Figure 1 A sectional view taken by the BB line in the diagram;

[0030] Figure 5 It is along Figure 1 A cross-sectional view taken by the CC line in the image;

[0031] Figure 6 and Figure 7 These are perspective views of the second mass body according to embodiments of this application;

[0032] Figure 8 and Figure 9 These are perspective views of the third mass body according to embodiments of this application;

[0033] Figure 10 and Figure 11 These are perspective views of the fourth mass body according to embodiments of this application;

[0034] Figure 12 This is a perspective view of the base according to an embodiment of this application;

[0035] Figure 13 This is a perspective view of an elastomer according to an embodiment of this application;

[0036] Figure 14 This is a perspective view of a plate in a sub-mass module according to an embodiment of this application;

[0037] Figure 15 This is a perspective view of a tuned mass damper according to another embodiment of this application;

[0038] Figure 16 This is a perspective view of a tuned mass damper applied to a main structure according to another embodiment of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] 10-Main structure; 100-Base; 110-Supporting base plate; 120-Boss; 130-Threaded hole;

[0041] 140 - Seventh connecting hole; 200 - First mass body; 210 - First connecting hole;

[0042] 220 - Limiting tube; 221 - First limiting tube section; 222 - Second limiting tube section; 230 - Wear-resistant sleeve;

[0043] 300 - Elastomer; 301 - Rubber body; 302 - Metal support plate; 303 - Metal gasket;

[0044] 310 - First elastic body; 320 - Second elastic body; 400 - Sub-mass module; 450 - Through hole;

[0045] 500 - Second mass body; 510 - Second mass body body; 520 - Second connecting hole;

[0046] 530 - Third connecting hole; 540 - Sixth connecting hole; 550 - Guide sleeve;

[0047] 600 - Third mass body; 630 - Fourth connecting hole;

[0048] 700 - Fourth mass body; 730 - Fifth connecting hole; 810 - First connecting piece;

[0049] 820 - Second connector; 830 - Third connector; 840 - Fastener. Detailed Implementation

[0050] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be changed as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0051] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein, which will become clear upon understanding the disclosure of this application.

[0052] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0053] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teaching of the examples described herein, the first component, first assembly, first region, first layer, or first part referred to as the first component, first assembly, first region, first layer, or first part may also be referred to as the second component, second assembly, second region, second layer, or second part.

[0054] In the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to," or "bonded to" another element, the element may be directly "on" another element, directly "connected to," or "bonded to" the other element, or one or more other elements may be present in between. Conversely, when an element is described as being "directly on" another element, "directly connected to," or "directly bonded to" another element, no other elements may be present in between.

[0055] The terminology used herein is for the purpose of describing various examples only and is not intended to limit disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0056] The directional terms such as "upper," "lower," "left," "right," "top," and "bottom" used in this application are based on the orientation shown in the accompanying drawings and are used only for the convenience of description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0057] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains after understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0058] Exemplary embodiments of the present application will now be described more fully with reference to the accompanying drawings. However, it should not be construed that the embodiments of the present application are limited to those described herein. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0059] Embodiments of this application provide a tuned mass damper, such as Figures 1 to 5 As shown, the tuned mass damper includes a base 100, a main mass module, an elastic body 300, and a sub-mass module 400. The elastic body 300 includes a first elastic body 310, which is located on the base 100 and between the main mass module. The sub-mass module 400 is connected to the main mass module on the side opposite to the base 100, and together with the main mass module, they constitute the mass block portion of the tuned mass damper, used for fine-tuning the mass of the tuned mass damper.

[0060] The base 100 can be generally configured as a plate to provide a mounting base for the main mass module, the elastomer 300 and the sub-mass module 400, or it can be used as a part for connection to the main structure when the tuned mass damper is installed on the main structure (e.g., a wind turbine generator).

[0061] The main mass module includes at least a first mass body 200, and may also include other mass bodies (described in detail below) as the main part of the mass block of the tuned mass damper. The first mass body 200 can be a single mass block or composed of multiple mass blocks, allowing for adjustment of its mass according to the application requirements of the main structure. In the example shown in the attached figures, the first mass body 200 is composed of multiple stacked mass blocks to avoid the inconvenience of machining connection holes and installation due to the large weight and size of a single mass block. Furthermore, the mass of the damper can be significantly adjusted by changing the number of mass blocks, thereby regulating the damper's stiffness and damping coefficient.

[0062] A first side of the first mass 200 faces the base 100, and a second side of the first mass 200 is opposite to the first side. A first elastic body 310 is installed between the base 100 and the first mass 200 on the first side of the first mass 200, providing elastic support for the first mass 200. The tuned mass damper also includes a first connector 810 for connecting the first mass 200 to the base 100 and applying a certain preload to the first elastic body 310. According to an embodiment of this application, the preload of the elastic body 300 can be adjusted by adjusting the preload of the first connector 810.

[0063] In the example shown in the attached figures, a first connector 810 passes through the first mass 200 and the first elastic body 310, thereby connecting the first mass 200 to the base 100. The first connector 810 can be a bolt, with its head pressing against the upper surface of the first mass 200. After passing through the first mass 200 and the first elastic body 310, the tail end of the bolt can be threaded into the threaded hole 130 on the base 100. By adjusting the engagement length between the first connector 810 and the base 100, the degree of compression of the first elastic body 310 can be adjusted, thereby adjusting the natural frequency of the tuned mass damper.

[0064] In some examples, the end of the first connector 810 may also extend from the lower surface of the base 100 and be connected to an external fastener such as a nut. By adjusting the first connector 810 and the external fastener, the degree of compression of the first elastomer 310 can be adjusted, thereby adjusting the stiffness of the elastomer.

[0065] According to some embodiments of this application, the first connector 810 may also be connected to the base 100 at a position offset from the first elastic body 310 (including the second elastic body 320 mentioned below), and clamp and fix the first elastic body 310 between the first mass body 200 and the base 100, thereby connecting the first mass body 200, the first elastic body 310, and the base 100 through the first connector 810. However, in the embodiment shown in the drawings, the first elastic body 310 is provided with a through hole, and the first connector 810 passes through the first elastic body 310 and connects to the base 100, thereby limiting the first elastic body 310 through the first connector 810 to prevent the first elastic body 310 from shifting or falling off the base 100.

[0066] Furthermore, according to some embodiments of this application, the elastic body 300 further includes a second elastic body 320, which is disposed on a second side of the first mass body 200 opposite to the first elastic body 310 disposed on a first side of the first mass body 200. In this case, the first connector 810 passes sequentially through the second elastic body 320, the first mass body 200, and the first elastic body 310 before connecting to the base 100. One end of the first connector 810 presses against the second elastic body 320, applying a certain preload to the first elastic body 310 and the second elastic body 320. By adjusting the tightness of the first connector 810, the amount of compression between the first elastic body 310 and the second elastic body 320 can be adjusted, thereby adjusting the stiffness of the elastic body.

[0067] In a tuned mass damper, an elastomer generates a restoring force opposite to the displacement direction of the mass through deformation, enabling the mass to oscillate back and forth, thereby counteracting the vibration energy of the main structure. During vibration, the elastomer stores kinetic energy and converts it into elastic potential energy. By matching the frequency with the main structure, this energy is transferred to the damper, ensuring efficient energy exchange with the main structure, significantly reducing vibration amplitude, and minimizing the resonance response of the main structure. The stiffness of the elastomer directly affects the energy exchange efficiency between the tuned mass damper and the main structure. According to embodiments of this application, by adjusting the stiffness of the elastomer, the frequency of the tuned mass damper can be matched with the frequency of the main structure, achieving a better tuning effect. According to embodiments of this application, the natural frequency of the damper can be adjusted by adjusting the first connecting member 810. This adjustment method is simple and convenient, improves the matching degree between the damper and the main structure, and allows the damper to adapt to different platform structures, improving its versatility.

[0068] Furthermore, by providing a first elastic body 310 and a second elastic body 320 on both sides of the first mass body 200, the nonlinearity caused by the asymmetry of compression / tension of the elastic body on one side can be reduced, the linear stiffness characteristics can be maintained, and the reliability of the tuned mass damper can be improved.

[0069] According to embodiments of this application, the first elastic body 310 and the second elastic body 320 can also be stacked in multiple layers. Therefore, the stiffness and damping coefficient of the damper can be adjusted by stacking and adding more elastic bodies.

[0070] According to one embodiment of this application, such as Figure 4 As shown, the main mass module has a first connecting hole 210, and a first connector 810 passes through the first connecting hole 210. The tuned mass damper also includes a limiting tube 220, which is sleeved on the first connector 810. The limiting tube 220 can be a rigid sleeve, and the length of the limiting tube 220 is greater than the length of the first connecting hole 210, so that a portion of the limiting tube 220 protrudes from the first connecting hole 210. In the example shown in the figure, the first connecting hole 210 is formed in the first mass body 200, and the length of the limiting tube 220 is greater than the thickness of the first mass body 200.

[0071] The length of the limiting tube 220 extending from the first connecting hole 210 is used to limit the amount of compression of the elastic body 300, and its extension length depends on the desired stiffness of the tuned mass damper. Before applying a preload to the elastic body 300, the sum of the thickness of the first mass 200 and the thickness of the elastic body 300 is greater than the length of the limiting tube 220. During the preload process of the first connector 810, both ends of the limiting tube 220 will abut against the pressing end of the first connector 810 and the base 100, respectively, thereby preventing the elastic body 300 from being further compressed. Therefore, the limiting tube 220 can control the tightness of the first connector 810, prevent the elastic body 300 from being over-compressed, and thus control the stiffness of the elastic body 300 after compression.

[0072] According to an embodiment of this application, the limiting tube 220 can be divided into at least two segments. For example, it can be configured as two segments along the length of the first connector 810, including a first limiting tube segment 221 and a second limiting tube segment 222. The length of the first limiting tube segment 221 is greater than the length of the second limiting tube segment 222. The first limiting tube segment 221 is located inside the main mass module, and at least a portion of the second limiting tube segment 222 extends to the outside of the main mass module. When adjusting the stiffness of the damper according to different installation scenarios and vibration reduction requirements, the preload of the first connector 810 can be controlled by simply replacing the second limiting tube segment 222.

[0073] According to an embodiment of this application, a wear-resistant sleeve 230 may be provided on the inner wall of the first connecting hole 210 to provide impact and wear resistance during use. For example, under reciprocating vibration of the damper, the wear-resistant sleeve 230 can prevent the limiting tube 220 from rubbing against the inner wall of the first connecting hole 210, thus preventing damage to the first mass body 200. If the wear-resistant sleeve 230 is damaged, it can be replaced, thereby avoiding the need to replace the first mass body 200 and reducing maintenance costs. The wear-resistant sleeve 230 can be made of materials such as nylon or rubber, or other wear-resistant materials can be used as substitutes.

[0074] like Figures 1 to 4 As shown, the sub-mass module 400 is disposed on the side of the main mass module opposite to the base 100, and is detachably connected to the main mass module. As an example, such as... Figure 4 As shown, the submass module 400 can be detachably connected to the main mass module via a second connector 820 (e.g., a bolt). The mass of the submass module 400 is less than the mass of the main mass module. By installing or removing the submass module 400, the total mass of the tuned mass damper can be adjusted, thereby adjusting the natural frequency of the tuned mass damper.

[0075] According to embodiments of this application, the sub-mass module 400 may include multiple sub-mass blocks. When adjusting the mass of the tuned mass damper, the mass of the main mass module can remain constant, and the mass of the sub-mass module 400 can be adjusted by changing the number of sub-mass blocks, thereby adjusting the total mass of the tuned mass damper within a certain range. For example, when installing the tuned mass damper onto a wind turbine generator, the mass of the tuned mass damper can be fine-tuned on-site according to the operating status of the wind turbine generator to adapt to the platform requirements. Furthermore, the relatively small mass of a single sub-mass block facilitates installation and disassembly.

[0076] In the example shown in the attached diagram, the sub-mass block is in the form of a thin plate. Multiple thin plates can be stacked to form a sub-mass module 400. The shape of a single thin plate can conform to the outer contour of the main mass module, so that it can be laid on the main mass module. Furthermore, if the mass of a single thin plate is still relatively large, the thin plate can be divided into at least two halves and connected to the main mass module respectively. As an example, the mass of a single plate is set to not exceed 25 kg, so that it can be moved by a single person.

[0077] According to an embodiment of this application, the main mass module is provided with a guide sleeve, and at least a portion of the elastomer is located within the guide sleeve. When the main mass module vibrates relative to the base 100, the elastomer can reciprocate within the guide sleeve. The guide sleeve can be located on a first side of the main mass module facing the base 100, or on a second side of the main mass module opposite to the base 100, or guide sleeves can be provided on both opposite sides of the main mass module to guide the elastomer within its range of motion.

[0078] like Figures 1 to 5 As shown, according to one embodiment of this application, the main mass module further includes a second mass body 500, which can be disposed on at least one of the first and second sides of the first mass body 200 and is fixedly connected to the first mass body 200. A guide sleeve 550 is formed on the second mass body 500, and the elastic body 300 is correspondingly located in the guide sleeve 550. By disposing the elastic body 300 in the guide sleeve 550, it is possible to prevent the elastic body 300 from falling off and also to guide the vibration of the tuned mass damper.

[0079] In the example shown in the attached drawings, the second mass 500 is disposed on the second side of the first mass 200, that is, on the side of the first mass 200 opposite to the base 100. Figure 6 and Figure 7As shown, the second mass body 500 includes a second mass body 510 and a guide sleeve 550 disposed on the second mass body 510. The length direction of the guide sleeve 550 is consistent with the vibration direction of the main mass module, and one side opening of the guide sleeve 550 faces the first mass body 200, so that the second elastic body 320 can be inserted into the guide sleeve 550. The second mass body 510 may be generally plate-shaped, and the guide sleeve 550 is disposed on the side of the second mass body 510 facing the first mass body 200 and extends toward the first mass body 200.

[0080] Multiple second elastic bodies 320 can be provided and distributed at intervals on the surface of the second side of the first mass body 200. The number of first connectors 810 and guide sleeves 550 corresponds to the number of second elastic bodies 320, and their positions are set one-to-one.

[0081] Furthermore, the guide sleeve 550 is formed as a through hole, so that the end of the first connector 810 can be exposed from the other end of the guide sleeve 550. At the position corresponding to the sub-mass module 400 and the guide sleeve 550, a through hole 450 can also be formed. The through hole 450 passes through the sub-mass module 400 and communicates with the guide sleeve 550, so that the operating end of the first connector 810 can be exposed to the outside of the tuned mass damper, which facilitates the operation of the first connector 810 to adjust the engagement amount between the first connector 810 and the base 100, thereby adjusting the pre-compression amount of the elastomer 300.

[0082] like Figure 4 , Figure 6 and Figure 7 As shown, the second mass body 500 is also provided with a second connecting hole 520. The second connector 820 can pass through the second connecting hole 520 and connect to the second mass body 500, thereby fixing the sub-mass module 400 to the second mass body 500. Figure 5 and Figure 6 As shown, the second mass body 500 is also provided with a third connecting hole 530, and the third connector 830 can pass through the third connecting hole 530 to connect the second mass body 500 and the first mass body 200 together.

[0083] like Figures 1 to 5 As shown, according to an embodiment of this application, the tuned mass damper further includes a third mass 600, which is disposed on a first side of the first mass 200, fixedly connected to the first mass 200, and maintains a certain distance from the base 100. Figure 5 As shown, the third connector 830 can pass through the first mass body 200 and connect to the third mass body 600.

[0084] like Figure 8 and Figure 9 The third mass body 600 includes a central mass portion and multiple mass arms extending radially around the central mass portion. This mass distribution structure of the third mass body 600 allows most of the mass to be concentrated in the center of the main mass module, generating a larger moment of inertia during vibration. A larger moment of inertia in the center provides stronger resistance to changes in direction, thus preventing eccentricity during vibration and enhancing the stability of the tuned mass damper. The multiple mass arms of the third mass body 600 can be symmetrically distributed around the central mass portion, ensuring uniform mass distribution and preventing vibration imbalance caused by eccentricity.

[0085] According to another embodiment of this application, such as Figures 1 to 5 As shown, the tuned mass damper also includes a fourth mass 700, which is disposed on the second side of the first mass 200 and fixedly connected to the first mass 200. Figure 5 As shown, the third connector 830 can pass through the fourth mass body 700, the second mass body 500, the first mass body 200, and the third mass body 600, connecting these mass bodies together. By connecting multiple mass bodies into a whole using a single connector, the number of connectors can be reduced.

[0086] like Figure 10 and Figure 11 As shown, similar to the third mass 600, the fourth mass 700 includes a central mass portion and multiple mass arms extending radially around the central mass portion. This mass distribution structure of the fourth mass 700 allows most of the mass to be concentrated in the center of the main mass module, generating a larger moment of inertia during vibration. The larger the moment of inertia in the center, the stronger the ability to resist changes in direction, thus avoiding eccentricity during vibration and enhancing the stability of the tuned mass damper. The multiple mass arms of the fourth mass 700 can be symmetrically distributed around the central mass portion, ensuring uniform mass distribution and preventing vibration imbalance caused by eccentricity.

[0087] The tuned mass damper according to the embodiments of this application may include one of a third mass 600 and a fourth mass 700, or may include both a third mass 600 and a fourth mass 700.

[0088] like Figure 8 and Figure 9 As shown, a fourth connecting hole 630 can be provided on the mass support arm of the third mass body 600. Figure 10 and Figure 11As shown, a fifth connecting hole 730 can be provided on the mass support arm of the fourth mass body 700. The third connecting member 830 can be sequentially inserted from top to bottom into the third connecting hole 530, the fifth connecting hole 730, the first connecting hole 210, and the fourth connecting hole 630, connecting the first mass body 200, the second mass body 500, the third mass body 600, and the fourth mass body 700 together to form the main mass module.

[0089] Multiple first elastic bodies 310 can be provided and distributed at intervals on the first side of the first mass body 200, for example, at intervals around the edge region of the first side of the first mass body 200. Multiple mass arms of the third mass body 600 form installation spaces, and the multiple first elastic bodies 310 can be respectively disposed in the space between two adjacent mass arms, thereby effectively utilizing structural space and improving structural compactness. In the example of this application, the third mass body 600 has four mass arms, and four first elastic bodies 310 are provided.

[0090] Similarly, multiple second elastic bodies 320 can be provided, spaced apart on the second side of the first mass body 200, for example, spaced apart around the edge region of the second side of the first mass body 200, forming mounting spaces between the multiple mass arms of the fourth mass body 700. Each guide sleeve 550 is correspondingly located in this mounting space. Correspondingly, multiple second elastic bodies 320 can be respectively provided in the mounting space between two adjacent mass arms, thereby effectively utilizing structural space and improving structural compactness. In the example of this application, the fourth mass body 700 has four mass arms, and four second elastic bodies 320 are provided. Of course, the number of mass arms can also be three.

[0091] According to embodiments of this application, such as Figure 12 As shown, the base 100 includes a supporting base plate 110 and a plurality of protrusions 120 disposed on the upper surface of the supporting base plate 110. A first elastic body 310 is disposed on the protrusions 120, such that the main mass module is spaced apart from the upper surface of the supporting base plate 110 by a predetermined distance, ensuring a certain vibration movement space. Limiting grooves can be formed on the protrusions 120. Similarly, limiting grooves can also be formed on the first side surface of the first mass body 200 at the position corresponding to the first elastic body 310. The upper and lower ends of the first elastic body 310 are respectively disposed in the limiting grooves to prevent the first elastic body 310 from shifting or displacing and to prevent the first elastic body 310 from detaching from the contact surface.

[0092] According to embodiments of this application, the elastomer 300, serving as a frequency absorption and vibration damping component, can be made of rubber material. This not only solves the stiffness problem but also the damping problem, integrating stiffness and damping into one unit without the need for an additional damper. Frequency tuning and energy dissipation are achieved through a single component, reducing system complexity. Compared to hydraulic dampers, rubber materials eliminate the need for sealing, avoiding performance degradation or environmental pollution problems caused by liquid leakage.

[0093] According to embodiments of this application, such as Figure 13 As shown, each of the first elastic body 310 and the second elastic body 320 includes a layered rubber body 301 and metal support plates 302 and metal gaskets 303 respectively disposed on opposite sides of the rubber body 301. The three are fixedly connected, for example, vulcanized into a single unit. The metal support plates 302 are engaged in the limiting grooves on the boss 120, and the metal gaskets 303 are engaged in the limiting grooves on the first mass body 200. By vulcanizing into a single structure and using metal components to engage with the limiting grooves, the system not only provides a limiting function but also prevents the rubber body from directly contacting the edge of the limiting groove and being cut by the edge of the limiting groove when it is squeezed and deformed.

[0094] As described above, a limiting tube 220 is fitted onto the first connector 810 to control the pre-compression amount of the elastomer. In the example shown in the attached figure, the limiting tube 220 is installed in the first mass body 200. The length of the limiting tube 220 is greater than the thickness of the first mass body 200 and less than the sum of the thickness of the first mass body 200 and the initial thicknesses of the first elastomer 310 and the second elastomer 320. By using limiting tubes 220 of different lengths, the pre-compression amount of the elastomer can be adjusted, thereby achieving overall fine-tuning of the damper stiffness.

[0095] The limiting tube 220 can be a single unit, or it can be divided into a first limiting tube segment 221 and a second limiting tube segment 222 along the length of the first connector 810. As an example, the length of the first limiting tube segment is greater than the length of the second limiting tube segment 222. The first limiting tube segment 221 is entirely located within the first mass body 200, while at least a portion of the second limiting tube segment 222 is located outside the first mass body 200, and can be disposed within the first elastic body 310 or the second elastic body 320. When it is necessary to adjust the pre-compression amount of the elastic body 300, the pre-compression amount of the elastic body 300 can be adjusted by replacing the second limiting tube segment 222 with a second limiting tube segment 222 of a different length, without having to replace the entire limiting tube 220. Therefore, according to the embodiments of this application, using at least two tube segments as limiting tubes 220 allows for fine-tuning of the compression amount of the elastic body 300, which is simple to operate and low in cost.

[0096] As an example, the lower end of the limiting tube 220 can directly contact the base 100. However, in the example shown in the attached drawings, the lower end of the limiting tube 220 is disposed in the first elastic body 310. When the limiting tube 220 is divided into a first limiting tube segment 221 and a second limiting tube segment 222, at least a portion of the second limiting tube segment 222 is inserted into the first elastic body 310.

[0097] In the appendix Figure 3 In the example shown, the upper end of the first limiting tube segment 221 has an outer flange. One side of the outer flange abuts against the bolt head of the first connector 810, and the other side of the outer flange abuts against the second elastic body 320. The second limiting tube segment 222 is disposed within the first elastic body 310. Before pre-tightening, a certain gap is reserved between the first limiting tube segment 221 and the second limiting tube segment 222. This gap corresponds to the clamping amount of the elastic body. By controlling the size of this gap, the stiffness of the tuned mass damper can be controlled. Furthermore, the ends of the first limiting tube segment 221 and the second limiting tube segment 222 facing each other can be flush with the second side surface of the first mass body 200. Therefore, the clamping amount of the elastic body can be determined based on the height difference between the end of the second limiting tube segment 222 and the first elastic body 310, facilitating the selection and replacement of the second limiting tube segment 222.

[0098] According to an embodiment of this application, the rubber body 301 of the first elastomer 310 has a hollow structure, and the second limiting tube segment 222 can be disposed within the rubber body 301 of the first elastomer 310. The inner diameter of the metal support plate 302 is smaller than the inner diameter of the rubber body 301, so that the end of the second limiting tube segment 222 can be supported on the metal support plate 302 of the first elastomer 310. When a pre-compression force is applied to the elastomer, the lower end of the limiting tube 220 will abut against the metal support plate 302 of the first elastomer 310. Under long-term reciprocating vibration, the metal support plate 302 may wear. However, compared to having the lower end of the limiting tube 220 directly contact the base 100, the maintenance cost of replacing the first elastomer 310 is lower.

[0099] According to embodiments of this application, the tuned mass damper can achieve large adjustments to its stiffness and damping coefficient by varying the number of mass blocks and elastic bodies. It can also fine-tune its stiffness and damping coefficient by adjusting the preload and the number of blocks in the sub-mass module 400. The adjustment method is convenient and offers high precision. Because this damper differs from electromagnetic and hydraulic dampers, it offers better maintainability.

[0100] According to the embodiments of this application, when constructing a tuned mass damper, the main mass module, the elastic body 300 and the mounting base 100 can constitute a mounting module, which can be used as a tuned mass damper on its own, or multiple mounting modules can be connected to each other to jointly constitute a tuned mass damper, or sub-mass modules 400 can be superimposed and connected to form a tuned mass damper.

[0101] like Figure 15 As shown, according to one embodiment of this application, multiple mounting modules are stacked on top of each other to form the main structure of a tuned mass damper. The uppermost mounting module is further connected to a sub-mass module 400, thus forming a tuned mass damper. By interconnecting multiple mounting modules, the total mass of the tuned mass damper can be increased, thereby adjusting the natural frequency of the tuned mass damper. Different numbers of mounting modules can be arbitrarily combined to form dampers of different masses to adapt to different platform requirements.

[0102] According to embodiments of this application, when multiple mounting modules are interconnected, they can be stacked in the height direction, with the base 100 of one mounting module interconnected with the second mass 500 of another mounting module. For example... Figure 6 and Figure 7 As shown, a sixth connecting hole 540 is provided on the second mass body 500, such as... Figure 12 As shown, a seventh connecting hole 140 is provided on the mounting base 100. (As indicated...) Figure 15 As shown, when connecting adjacent mounting modules, the sixth connecting hole 540 and the seventh connecting hole 140 can be positioned vertically opposite each other and connected together using fasteners 840. This modular design of the mounting modules allows for flexible combinations to adapt to different platform requirements.

[0103] According to an embodiment of this application, the tuned mass damper described above can be installed on the main structure 10. The main structure 10 can be a tower or the nacelle of a wind turbine generator, etc.

[0104] According to an embodiment of this application, a structural component for a wind turbine generator set is also provided. The structural component includes a structural body and a tuned mass damper, as described above, mounted on the structural body. The structural body can be the tower, nacelle, or other components of a wind turbine generator set. However, the structural body of this application is not limited to components of a wind turbine generator set; it can also be other tall chimneys, or other long, flexible structures.

[0105] According to an embodiment of this application, a wind turbine generator set is also provided, the wind turbine generator set including a tower, a nacelle mounted on the tower, and a tuned mass damper as described above, the tuned mass damper being installed in the tower or the nacelle.

[0106] According to embodiments of this application, multiple tuned mass dampers can be installed in a wind turbine generator set. The multiple tuned mass dampers can be installed in different directions, allowing them to resonate in multiple different directions to absorb vibrations from different directions.

[0107] Although specific details of the embodiments of this application have been described in detail with reference to the accompanying drawings, the scope of protection of this application is not limited by the description. Without departing from the principles of this application, those skilled in the art can make corresponding modifications and variations, which will fall within the scope of protection of this application.

Claims

1. A tuned mass damper, characterized in that, The tuned mass damper includes: Base (100); A main mass module is disposed on the base (100). The main mass module includes a first mass body (200), the first mass body (200) having a first side and a second side opposite to each other, the first side of the first mass body (200) facing the base (100). An elastomer (300) includes a first elastomer (310) disposed between the first mass body (200) and the base (100), wherein the first mass body (200), the first elastomer (310) and the base (100) are connected by a first connector (810); A sub-mass module (400) is detachably connected to the main mass module on the second side of the first mass body (200). The weight of the sub-mass module (400) is less than that of the main mass module, and it is used to adjust the mass of the tuned mass damper.

2. The tuned mass damper according to claim 1, characterized in that, The elastic body (300) further includes a second elastic body (320), which is disposed on the second side of the first mass body (200). The second elastic body (320), the first mass body (200), the first elastic body (310) and the base (100) are connected by the first connector (810).

3. The tuned mass damper according to claim 1, characterized in that, The main mass module further includes a second mass body (500), which is disposed on at least one of the first and second sides of the first mass body (200) and fixedly connected to the first mass body (200). The second mass body (500) has a guide sleeve (550) corresponding to the elastic body (300), and the elastic body (300) is located in the guide sleeve (550).

4. The tuned mass damper according to claim 2, characterized in that, The main mass module further includes a third mass body (600), which is fixedly connected to the first mass body (200) on a first side. The third mass body (600) includes a central mass block and a plurality of mass arms extending radially around the central mass block; and / or The main mass module also includes a fourth mass body (700), which is fixedly connected to the first mass body (200) on the second side of the first mass body (200). The third mass body (600) includes a central mass block and a plurality of mass arms extending radially around the central mass block.

5. The tuned mass damper according to claim 4, characterized in that, The first elastic body (310) is provided in multiple forms, spaced apart around the edge region of a first side of the first mass body, and the multiple mass arms of the third mass body (600) extend between adjacent first elastic bodies (310); and / or, The second elastic body (320) is configured in multiple ways, spaced apart around the edge region of the second side of the first mass body (200), and the multiple mass arms of the fourth mass body (700) extend between two adjacent second elastic bodies (320).

6. The tuned mass damper according to any one of claims 1-5, characterized in that, The base (100) includes a supporting base plate (110) and a plurality of protrusions (120) disposed on the supporting base plate (110). The first elastic body (310) is disposed on the protrusions (120) such that the first side of the first mass body (200) is spaced apart from the supporting base plate (110) by a predetermined distance.

7. The tuned mass damper according to any one of claims 1-5, characterized in that, The first mass body (200) is provided with a first connecting hole (210), and the first connector (810) passes through the first connecting hole (210) and is connected to the base (100). The tuned mass damper also includes a limiting tube (220) sleeved on the first connector (810). The limiting tube (220) is disposed in the connecting hole and extends through the elastic body (300) and the first mass body (200) to control the pre-tightening amount of the elastic body (300).

8. The tuned mass damper according to claim 7, characterized in that, The limiting tube (220) includes a first limiting tube segment (221) and a second limiting tube segment (222) arranged sequentially along the length of the first connector (810). The length of the first limiting tube segment (221) is greater than the length of the second limiting tube segment (222). The first limiting tube segment (221) is located inside the first mass body (200), and at least a portion of the second limiting tube segment (222) extends to the outside of the first mass body (200). And / or, a wear-resistant sleeve (230) is provided on the inner wall of the first connecting hole (210) of the first mass body (200).

9. The tuned mass damper according to any one of claims 1-5, characterized in that, The first elastic body (310) and the second elastic body (320) both include a rubber body (301), a metal support plate (302) and a metal gasket (303) respectively disposed on opposite sides of the rubber body (301), the rubber body (301), the metal support plate (302) and the metal gasket (303) being fixedly connected; and / or, At a position corresponding to the first connector (810), the sub-mass module (400) is provided with a through hole (450) for adjusting the clamping amount of the elastomer (300) by operating through the first connector (810).

10. The tuned mass damper according to any one of claims 1-5, characterized in that, The sub-mass module (400) includes multiple sub-mass bodies (410) that are stacked and / or spliced ​​together; and / or, The main mass module and the elastomer (300) constitute an installation module, and the tuned mass damper includes multiple stacked installation modules.

11. The tuned mass damper according to claim 1, characterized in that, The first connector (810) can adjust the amount of compression of the elastomer (300).

12. A structural component of a wind turbine generator set, characterized in that, The structural component includes a structural body and a tuned mass damper as described in any one of claims 1-11 mounted on the structural body.

13. A wind turbine generator set, characterized in that, The wind turbine generator set includes a tower, a nacelle mounted on the tower, and a tuned mass damper as described in any one of claims 1-11, wherein the tuned mass damper is installed in the tower or the nacelle; or, the wind turbine generator set includes the structural components as described in claim 12.

14. The wind turbine generator set according to claim 13, characterized in that, The number of the tuned mass dampers is at least two, and the at least two tuned mass dampers have different resonance directions.

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