Vibration damping devices for wind turbine towers

Abstract

This application provides a vibration damping device for wind turbine towers, relating to the field of vibration damping equipment technology. The vibration damping device includes a foundation, a first buffer component, a supporting wall, a damping component, and a second buffer component. A portion of the foundation is embedded in the inner wall of the wind turbine tower. The first buffer component is disposed on the foundation and is used to buffer longitudinal impacts on the wind turbine tower. The supporting wall is disposed on the first buffer component. The damping component is disposed within the supporting wall and forms an installation space between itself and the inner wall of the supporting wall. The second buffer component is used to buffer transverse impacts on the wind turbine tower. The second buffer component includes a first sub-buffer component and a second sub-buffer component with elastic buffering function. The elastic coefficients of the first and second sub-buffer components are different. The vibration damping device provided by this application can effectively reduce the vibration of the wind turbine tower, ensuring and improving the stability of the internal structure of the wind turbine tower and the safety of operation of equipment such as wind turbine generators.

Description

Technical Field

[0001] This application relates to the field of vibration damping equipment technology, and in particular to a vibration damping device for wind turbine towers. Background Technology

[0002] The wind turbine tower is the support structure in wind power generation. It primarily serves to support the wind turbine generator set and absorb vibrations. The wind turbine is typically mounted on one side of the tower, and is powered by wind to generate electricity.

[0003] With the development of new energy technologies and new energy construction, the installed capacity of wind turbine generators is increasing daily. However, as the number of wind turbine generators increases, the suitable geographical and geological conditions for stable installation of wind turbine generators are constantly decreasing, especially in areas with high earthquake frequency, where suitable geographical and geological conditions are becoming increasingly scarce.

[0004] While existing wind turbine towers can absorb some of the vibrations generated during turbine operation, the remaining vibrations still affect the operation of the wind turbine, especially in areas with high earthquake frequency. This significantly reduces the stability of the internal structure of the wind turbine tower and the safety of equipment such as wind turbines. Summary of the Invention

[0005] In view of this, this application provides a vibration damping device for wind turbine towers to solve the problem that existing wind turbine towers have poor internal structural stability and low equipment operation safety factor due to vibration.

[0006] To achieve the above objectives, this application provides a vibration damping device for wind turbine towers, which adopts the following technical solution:

[0007] This application provides a vibration damping device for wind turbine towers, comprising:

[0008] The foundation, in part, is embedded in the inner wall of the wind turbine tower;

[0009] A first buffer assembly is disposed on the foundation and is configured to buffer the impact of the wind turbine tower in the longitudinal direction.

[0010] A hollow supporting wall is mounted on the first buffer assembly;

[0011] A shock-absorbing component is disposed inside the supporting wall, and the two sides of the shock-absorbing component are spaced apart from the two inner walls of the supporting wall to form installation spaces respectively.

[0012] The second buffer assembly is configured to buffer the impact of the wind turbine tower in the lateral direction. The second buffer assembly includes a first sub-buffer assembly and a second sub-buffer assembly, both disposed in the installation space and both having elastic buffering function. The first sub-buffer assembly is located above the second sub-buffer assembly, and the elastic coefficient of the first sub-buffer assembly is different from that of the second sub-buffer assembly.

[0013] In one possible implementation, multiple foundation pits are provided on the foundation;

[0014] The first buffer assembly includes multiple longitudinal buffer dampers, which are arranged one-to-one in the multiple foundation pits.

[0015] In one possible implementation, the first buffer assembly further includes a buffer plate, the bottom surface of which is connected to the pit, and the top surface of which is connected to the longitudinal buffer damper.

[0016] In one possible implementation, the damping component includes a support layer and an internal buffer.

[0017] The support layer is laid on the bottom surface of the supporting wall;

[0018] The internal buffer is disposed on the support layer, wherein the installation space is formed between the two sides of the internal buffer, the inner walls of the two sides of the supporting wall, and the top surface of the support layer.

[0019] In one possible implementation, the internal buffer is a concrete wall doped with a polymer-reinforced material, wherein the mass doping rate of the polymer-reinforced material is between 10% and 30%.

[0020] In one possible implementation, the first sub-buffer assembly includes a plurality of first lateral buffer dampers, the two ends of which are respectively connected to the inner wall of the supporting wall and the side wall of the internal buffer body.

[0021] In one possible implementation, the second sub-buffer component includes a buffer firewall and a plurality of second lateral buffer dampers;

[0022] A buffer firewall is provided on each of the two inner sidewalls of the internal buffer body, and the height of the buffer firewall is lower than the height of the internal buffer body in the longitudinal direction.

[0023] Each of the installation spaces is provided with at least one second lateral buffer damper, the two ends of which are respectively connected to the inner walls of the buffer firewall and the supporting wall.

[0024] In one possible implementation, an air barrier layer is formed between the outer wall of the buffer firewall and the inner wall of the supporting wall.

[0025] In one possible implementation, the buffer firewall is made of a fire-resistant material with a buffering effect.

[0026] In one possible implementation, the elastic coefficient of the first lateral buffer damper is smaller than that of the second lateral buffer damper.

[0027] The vibration damping device for wind turbine towers provided in this application embeds the foundation portion of the vibration damping device into the inner wall of the wind turbine tower, forming an embedded structure. This allows for the buffering of mechanical vibrations experienced by the wind turbine tower using other structures installed on the foundation. Specifically, a first buffer assembly is installed on the foundation to buffer impacts on the wind turbine tower in the longitudinal direction (vertical direction). A supporting wall, which is internally hollow, is installed on the first buffer assembly. The vibration damping assembly is housed within the supporting wall, with its two opposite side walls spaced apart from the side walls of the supporting wall to form an installation space. A second buffer assembly buffers impacts on the wind turbine tower in the transverse direction (horizontal direction). This second buffer assembly includes a first sub-buffer assembly and a second sub-buffer assembly, both with elastic buffering function, installed within the installation space. Vertically, the first sub-buffer assembly is positioned above the second sub-buffer assembly, and the elastic coefficients of the first and second sub-buffer assemblies are different. Based on this, the above-mentioned technical solution of this application forms a vibration damping structure for wind turbine towers, thereby effectively reducing the impact of mechanical vibrations on the wind turbine towers, ensuring and improving the stability of the internal structure of the wind turbine towers, and improving the operational safety of equipment such as wind turbine generators in the wind turbine towers.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the vibration damping device for wind turbine towers provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Obviously, the drawings described below are some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of a vibration damping device for a wind turbine tower provided in an embodiment of this application;

[0031] Figure 2 A partial structural schematic diagram of a vibration damping device for a wind turbine tower provided in an embodiment of this application;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of region A in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Shock absorption device;

[0035] 1-Foundation; 11-Foundation pit;

[0036] 2-First buffer assembly; 21-Longitudinal buffer damper; 22-Buffer plate;

[0037] 3-Supporting wall;

[0038] 4-Damping components; 41-Support layer; 42-Internal buffer;

[0039] 5-Second buffer assembly; 51-First sub-buffer assembly; 52-Second sub-buffer assembly; 521-Buffer firewall; 522-Second lateral buffer damper;

[0040] 6-Air barrier layer;

[0041] 10 - Wind turbine tower;

[0042] 40 - Installation space;

[0043] X - Lateral direction; Y - Vertical direction.

[0044] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] Secondly, it should be noted that in the description of this application, the terms "inner" and "outer," etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0047] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] The wind turbine tower is the support structure in wind power generation. It primarily serves to support the wind turbine generator set and absorb vibrations. The wind turbine is typically mounted on one side of the tower, and is powered by wind to generate electricity.

[0049] With the development of new energy technologies and new energy construction, the installed capacity of wind turbine generators is increasing day by day. However, as the number of wind turbine generators increases, the geographical and geological conditions suitable for the stable installation of wind turbine generators are also decreasing, especially in areas with high earthquake frequency, where the suitable geographical and geological conditions are becoming increasingly scarce.

[0050] While existing wind turbine towers can absorb some of the vibrations generated during turbine operation, the remaining vibrations still affect the turbine's operation, especially in areas with high seismic frequency. This significantly reduces the stability of the tower's internal structure and the safety of the wind turbine and other equipment. To improve the adaptability of wind turbines to the geological conditions of high-seismic-frequency areas, a foundation structure with high vibration resistance is needed to ensure the stability of wind turbine operation.

[0051] To address the aforementioned problems, this application provides a vibration damping device for wind turbine towers, which solves the problem that existing wind turbine towers suffer from poor internal structural stability and low operational safety due to vibration.

[0052] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0053] Reference Figures 1 to 3As shown in the embodiment of this application, a vibration damping device 100 for a wind turbine tower is provided. The vibration damping device 100 for a wind turbine tower includes a foundation 1, a first buffer component 2, a supporting wall 3, a vibration damping component 4, and a second buffer component 5.

[0054] A portion of the foundation 1 is embedded in the inner wall of the wind turbine tower 10 to ensure the structural strength of the connection between the foundation 1 and the inner wall of the wind turbine tower 10. It also ensures that some of the vibrations generated during the operation of the wind turbine can be directly transmitted to the foundation 1, and then other structural components installed on the foundation 1, such as the first buffer component 2, the supporting wall 3, the shock absorption component 4, and the second buffer component 5, can absorb and buffer the aforementioned vibrations.

[0055] The foundation 1 can be made of the same material as the wind turbine tower 10 to reduce the design and production costs of the vibration damping device 100. Alternatively, the foundation 1 can be made of a different material than the wind turbine tower 10.

[0056] The shape of the foundation 1 can be an annular structure embedded in the inner wall of the wind turbine tower 10, or the shape of the foundation 1 can be a square or circular structure embedded in the inner wall of the wind turbine tower 10 in an interlocking manner.

[0057] The bottom surface of the foundation 1 can be flush with the bottom surface of the wind turbine tower 10.

[0058] The first buffer component 2 is disposed on the foundation 1, and is used to buffer the impact of the wind turbine tower 10 along the longitudinal direction Y. It should be noted that, in this example, the longitudinal direction Y represents the extension direction from the bottom end to the top end of the wind turbine tower 10. There can be multiple first buffer components 2, which are arranged on the foundation 1 according to certain rules. For example, when the foundation 1 is a square structure, multiple first buffer components 2 are arranged in a rectangular array. Alternatively, when the foundation 1 is a ring structure or a circle, multiple first buffer components 2 are arranged in a circular array.

[0059] The support wall 3 is mounted on the first buffer assembly 2. The interior of the support wall 3 is a hollow structure, which is used to effectively support other structures mounted inside it and to transmit the mechanical vibration of the wind turbine tower 10.

[0060] It should be noted that, taking a plane parallel to the horizontal plane as the cross-section, when the cross-sectional shape of the foundation 1 is square or circular, the cross-sectional shape of the supporting wall 3 can be a frame or annular structure. When the cross-sectional shape of the foundation 1 is annular, the cross-sectional shape of the supporting wall 3 can also be annular, frame, or circular, that is, multiple supporting walls 3 are provided on the foundation 1 at intervals.

[0061] The damping component 4 is disposed inside the supporting wall 3. The two side walls of the damping component 4 are spaced apart from the two inner side walls of the supporting wall 3, forming installation spaces 40 respectively. It should be noted that the shape of each installation space 40 can be adapted to the cross-sectional shape of the supporting wall 3. For example, when the cross-sectional shape of the supporting wall 3 is frame-shaped, the cross-sectional shape of each installation space 40 can be rectangular or square. Alternatively, when the cross-sectional shape of the supporting wall 3 is annular, the cross-sectional shape of each installation space 40 can also be annular, in which case the two installation spaces 40 form a concentric ring structure.

[0062] The second buffer assembly 5 is used to buffer the impact of the wind turbine tower 10 along the lateral direction X. In this example, the lateral direction X is used to characterize the extension direction parallel to the horizontal plane. The second buffer assembly 5 includes a first sub-buffer assembly 51 and a second sub-buffer assembly 52, both of which have elastic buffering functions. The first sub-buffer assembly 51 and the second sub-buffer assembly 52 are both disposed in the installation space 40.

[0063] Each installation space 40 is provided with a first sub-buffer assembly 51 and a second sub-buffer assembly 52. ​​The first sub-buffer assembly 51 is located above the second sub-buffer assembly 52. ​​The elastic coefficient of the first sub-buffer assembly 51 is different from that of the second sub-buffer assembly 52 to ensure the uniformity of the buffering effect at each connection point along the longitudinal direction Y between the two inner walls of each installation space 40.

[0064] In this example, a portion of the foundation 1 is embedded in the inner wall of the wind turbine tower 10, forming an embedded structure. This effectively ensures and improves the structural strength of the connection between the foundation 1 and the wind turbine tower 10. Simultaneously, the foundation 1 can effectively transmit some of the vibrations generated by the operation of the equipment in the wind turbine tower 10 to other structures on the foundation 1. Then, the first buffer component 2 installed on the foundation 1 can buffer the mechanical vibrations experienced by the wind turbine tower 10 in the longitudinal direction Y. Next, the vibration damping component 4 installed in the supporting wall 3, in conjunction with the second buffer component 5, can buffer the mechanical vibrations experienced by the wind turbine tower 10 in the transverse direction X. This forms a vibration damping structure for the wind turbine tower 10, effectively reducing the impact of mechanical vibrations on the wind turbine tower 10, ensuring and improving the stability of the internal structure of the wind turbine tower 10, and enhancing the operational safety of the wind turbine generator and other equipment within the wind turbine tower 10.

[0065] like Figure 1 As shown, in some embodiments, multiple foundation pits 11 are provided on the foundation 1. The bottom of the foundation pit 11 extends into the foundation 1 in the longitudinal direction Y but does not penetrate the foundation 1.

[0066] The first buffer assembly 2 includes multiple longitudinal buffer dampers 21, wherein the number of longitudinal buffer dampers 21 is the same as the number of foundation pits 11, that is, multiple longitudinal buffer dampers 21 are arranged one-to-one in multiple foundation pits 11.

[0067] In one example, the longitudinal damper 21 may include, but is not limited to, a spring.

[0068] In this example, the top of the longitudinal damper 21 abuts against the supporting wall 3, and the bottom of the longitudinal damper 21 can directly abut against the bottom of the foundation pit 11, so as to use multiple longitudinal dampers 21 to buffer the longitudinal impact on the wind turbine tower 10, such as to reduce the longitudinal impact on the wind turbine tower nacelle.

[0069] like Figure 1 and Figure 2 As shown, in some embodiments, the first buffer assembly 2 further includes a buffer plate 22, the bottom surface of which is connected to the foundation pit 11, and the top surface of which is connected to the bottom surface of the longitudinal buffer damper 21.

[0070] The longitudinal cross-sectional shape of the buffer plate 22 may include, but is not limited to, a circle, a regular polygon, or a rectangle. It should be noted that the material of the buffer plate 22 may include, but is not limited to, rubber, elastic plastic, or sheet materials.

[0071] In this example, the buffer plate 22 can reduce the local pressure on the foundation pit 11, thereby increasing the service life of the foundation 1. At the same time, the buffer plate 22, together with the longitudinal buffer damper 21, forms a double-layer buffer structure, which can effectively weaken the longitudinal impact on the wind turbine tower 10, ensuring and improving the service life of the wind turbine tower 10.

[0072] like Figure 1 and Figure 2 As shown, in some embodiments, the damping component 4 includes a support layer 41 and an internal buffer 42.

[0073] The support layer 41 is laid on the bottom surface of the supporting wall 3, and the material of the support layer 41 may include, but is not limited to, concrete.

[0074] An internal buffer 42 is disposed on a support layer 41, wherein, along the longitudinal direction Y, the two sides of the internal buffer 42, the two inner walls of the supporting wall 3, and the top surface of the support layer 41 enclose and form an installation space 40.

[0075] In this example, the support layer 41 can be used to conduct longitudinal and lateral impacts on the wind turbine tower 10. The internal buffer 42 can weaken the longitudinal impact on the wind turbine tower 10 on the one hand, and on the other hand, the internal buffer 42, together with the second buffer assembly 5, can buffer the lateral impact on the wind turbine tower 10, thereby reducing the impact of mechanical vibration on the wind turbine tower 10.

[0076] like Figure 2 As shown, in some embodiments, the internal buffer 42 is a concrete wall reinforced with a polymer doped material, which may include, but is not limited to, modified carboxylated styrene-butadiene latex SD623. The mass doping rate of the polymer doping material is between 10% and 30% to ensure the structural strength of the internal buffer 42.

[0077] In one specific example, the polymer reinforcement material has a mass doping rate of 15% to effectively improve the elastic modulus and vibration resistance of the internal buffer 42.

[0078] like Figure 3 and combined Figure 2 As shown, in some embodiments, the first sub-buffer assembly 51 includes multiple first lateral buffer dampers. The two ends of each first lateral buffer damper are connected to the interior of the supporting wall 3 and the side wall of the internal buffer body 42, respectively. It should be noted that multiple first lateral buffer dampers are provided in each installation space 40, and these multiple first lateral buffer dampers are symmetrically arranged on both sides of the supporting wall 3. Since the first lateral buffer dampers are located on the upper side of the internal buffer body 42, the symmetrically arranged multiple first lateral buffer dampers can be used to achieve damping and buffering of the internal buffer body 42.

[0079] In one example, the first lateral buffer damper may include, but is not limited to, a spring, a damper, etc.

[0080] like Figure 1 and combined Figure 3 As shown, in some embodiments, the second sub-buffer assembly 52 includes a buffer firewall 521 and a plurality of second lateral buffer dampers 522.

[0081] Buffer firewalls 521 are provided on both inner walls of the inner buffer body 42. Along the longitudinal direction Y, the height of the buffer firewalls 521 is lower than the height of the inner buffer body 42. The first transverse buffer damper is located above the buffer firewalls 521.

[0082] Each installation space 40 is provided with at least one second lateral buffer damper 522, the two ends of which are connected to the inner walls of the buffer firewall 521 and the supporting wall 3, respectively.

[0083] Specifically, along the longitudinal direction Y, each installation space 40 is provided with a plurality of second lateral buffer dampers 522 arranged in a rectangular array, wherein each column is provided with three second lateral buffer dampers 522, one at the top, one at the middle, and one at the bottom.

[0084] In one example, the first lateral buffer damper may include, but is not limited to, a spring, a damper, etc.

[0085] In this example, multiple second lateral buffer dampers 522 are used in conjunction with the first lateral buffer damper and together with the internal buffer body 42, they form a structure with a damping effect to achieve the damping effect on the lateral impact of the wind turbine tower 10, reduce the lateral impact of the wind turbine tower 10 and its internal structure, thereby ensuring the stability of the internal structure of the wind turbine tower 10 and the safety of equipment operation in stable areas or earthquake-prone areas.

[0086] When both the first lateral buffer damper and the second lateral buffer damper 522 are springs, the elastic coefficient of the first lateral buffer damper is less than that of the second lateral buffer damper.

[0087] Based on this, the first lateral buffer damper with a small elastic coefficient can, on the one hand, dampen and buffer the lateral impact on the wind turbine tower 10, and on the other hand, it can also provide partial support between the supporting wall 3 and the internal buffer body 42.

[0088] Furthermore, the second lateral buffer damper 522, which has a larger elastic coefficient, can provide partial protection for the buffer firewall 521, and at the same time, it can also dampen and buffer the lateral impacts on the wind turbine tower 10.

[0089] like Figure 3 As shown, in some embodiments, an air barrier layer 6 is formed between the outer wall of the buffer firewall 521 and the inner wall of the supporting wall 3. It should be noted that a plurality of second lateral buffer dampers 522 are located in the air barrier layer 6.

[0090] The material of the buffer firewall 521 includes fireproof materials with a buffering effect, which may include, but are not limited to, magnesium oxide fireproof boards.

[0091] In this example, the use of air barrier layer 6 and buffer firewall 521 can effectively improve the thermal insulation and fire protection performance of shock absorber 100.

[0092] Other embodiments of this application will readily come to mind when considering the specification and practicing the technical solutions disclosed herein.

[0093] This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this application.

[0094] The description and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0095] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A vibration damping device for wind turbine towers, characterized in that, include: The foundation, in part, is embedded in the inner wall of the wind turbine tower; A first buffer assembly is disposed on the foundation and is configured to buffer the impact of the wind turbine tower in the longitudinal direction. A hollow supporting wall is mounted on the first buffer assembly; A shock-absorbing component is disposed inside the supporting wall, and the two sides of the shock-absorbing component are spaced apart from the two inner walls of the supporting wall to form installation spaces respectively. The second buffer assembly is configured to buffer the impact of the wind turbine tower in the lateral direction. The second buffer assembly includes a first sub-buffer assembly and a second sub-buffer assembly, both disposed in the installation space and both having elastic buffering function. The first sub-buffer assembly is located above the second sub-buffer assembly, and the elastic coefficient of the first sub-buffer assembly is different from that of the second sub-buffer assembly.

2. The vibration damping device for wind turbine towers according to claim 1, characterized in that, Multiple foundation pits are set on the foundation; The first buffer assembly includes multiple longitudinal buffer dampers, which are arranged one-to-one in the multiple foundation pits.

3. The vibration damping device for wind turbine towers according to claim 2, characterized in that, The first buffer assembly further includes a buffer plate, the bottom surface of which is connected to the foundation pit, and the top surface of which is connected to the longitudinal buffer damper.

4. The vibration damping device for wind turbine towers according to any one of claims 1 to 3, characterized in that, The shock absorption assembly includes a support layer and an internal buffer body; The support layer is laid on the bottom surface of the supporting wall; The internal buffer is disposed on the support layer, wherein the installation space is formed between the two sides of the internal buffer, the inner walls of the two sides of the supporting wall, and the top surface of the support layer.

5. The vibration damping device for wind turbine towers according to claim 4, characterized in that, The internal buffer is a concrete wall doped with polymer-reinforced material, wherein the mass doping rate of the polymer-reinforced material is between 10% and 30%.

6. The vibration damping device for wind turbine towers according to claim 4, characterized in that, The first sub-buffer assembly includes a plurality of first lateral buffer dampers, the two ends of which are respectively connected to the inner wall of the supporting wall and the side wall of the internal buffer body.

7. The vibration damping device for wind turbine towers according to claim 6, characterized in that, The second sub-buffer component includes a buffer firewall and multiple second lateral buffer dampers; A buffer firewall is provided on each of the two inner sidewalls of the internal buffer body, and the height of the buffer firewall is lower than the height of the internal buffer body in the longitudinal direction. Each of the installation spaces is provided with at least one second lateral buffer damper, the two ends of which are respectively connected to the inner walls of the buffer firewall and the supporting wall.

8. The vibration damping device for wind turbine towers according to claim 7, characterized in that, An air barrier layer is formed between the outer wall of the buffer firewall and the inner wall of the supporting wall.

9. The vibration damping device for wind turbine towers according to claim 7, characterized in that, The buffer firewall is made of fire-resistant materials that have a buffering effect.

10. The vibration damping device for wind turbine towers according to any one of claims 7 to 9, characterized in that, The elastic coefficient of the first lateral buffer damper is less than that of the second lateral buffer damper.

Images