CN212898802U - Damping device, vibration suppression device and wind generating set - Google Patents

Abstract

The embodiment of the application provides a damping device, presses down device and wind generating set that shakes, damping device includes: the damping assembly, the first connecting assembly and the second connecting assembly; the damping assembly comprises a stator disc, a rotor disc, a clamping part, a transmission shaft and a transmission strip; the transmission strip is in transmission connection with the transmission shaft, and the transmission shaft is arranged in the clamping part and can rotate around the central shaft of the transmission shaft; the transmission shaft penetrates through the stator disc and is coaxially and fixedly connected with the rotor disc, the stator disc is fixedly connected to the clamping part, and the rotor disc and the stator disc can rotate relatively and generate electromagnetic damping; one end of the first connecting component is fixedly connected with the clamping part, and the other end of the first connecting component is provided with a hinged part; and the second connecting assembly is hinged with one end of the transmission strip. The application that the device that shakes that this application provided can effectively deal with wind generating set high frequency of rocking and meter level swing has ensured that wind generating set can properly deal with the vibration of various condition, has protected unit safety, and can guarantee that the unit lasts the electricity generation.

Description

Damping device, vibration suppression device and wind generating set

Technical Field

The application relates to the technical field of vibration suppression equipment, in particular to a damping device, a vibration suppression device and a wind generating set.

Background

The wind generating set is a green energy source device for converting wind energy into electric energy, is distributed in most environmental areas on the earth, and can be roughly divided into an onshore wind generating set and an offshore wind generating set. The external environment of a wind park, whether it is an onshore or offshore wind park, is complex and often accompanied by a large amount of uncertainty. These factors constitute various corresponding excitation sources in the operation of the wind generating set, such as external uncertain wind load, irregular and recyclable wave load, unbalance of the impeller, rotation of the impeller and the like. The input of these excitation sources causes various uncertainties in the operating characteristics of the wind turbine generator system and some abnormal behavior, among which the most intuitive response is the vibration of the wind turbine generator system. Under the action of various excitation sources, the vibration in the front-back direction and the left-right direction can be generated, the vibration response directly causes the stability and the safety of the operation of the wind generating set, and under the large vibration response, the shutdown protection of the wind generating set can be caused, so that the loss of the generating capacity is caused.

Damping vibration by tuned mass dampers is one solution. At present, a tuned mass damper has certain application in the building industry, and damping elements of the corresponding tuned mass damper are basically fluid viscous type damping elements, so that the damping elements have the advantage of high cost performance, and are suitable for the application scenes of centimeter-level building industry with low shaking frequency and swing amplitude; however, this type of damping element is not suitable for being applied to wind turbine generators with high oscillation frequency and meter-level oscillation amplitude in application scenarios. Therefore, it is necessary to provide a vibration suppression device capable of coping with high shaking frequency and meter-level swing amplitude, so as to ensure that the wind generating set can properly cope with the vibration of various conditions, protect the safety of the wind generating set, and ensure the continuous power generation of the set.

SUMMERY OF THE UTILITY MODEL

The damping device, the vibration suppression device and the wind generating set are provided aiming at the defects of the existing mode, and the technical problems that the vibration suppression device in the prior art is not suitable for the application scene of the wind generating set and cannot protect the safety of the wind generating set and continuously generate electricity are solved.

In a first aspect, an embodiment of the present application provides a damping device, including: the damping assembly, the first connecting assembly and the second connecting assembly;

the damping assembly comprises a stator disc, a rotor disc, a clamping part, a transmission shaft and a transmission strip; the transmission strip is in transmission connection with the transmission shaft, and the transmission shaft is arranged in the clamping part and can rotate around the central shaft of the transmission shaft; the transmission shaft penetrates through the clamping part, faces to the side part of the stator disc and is coaxially and fixedly connected with the rotor disc, the stator disc is fixedly connected to the clamping part, and the rotor disc and the stator disc can rotate relatively and generate electromagnetic damping;

one end of the first connecting component is fixedly connected with the clamping part, and the other end of the first connecting component is provided with a hinged part;

and the second connecting assembly is hinged with one end of the transmission strip.

In certain implementations of the first aspect, the stator disc includes a first stator disc and a second stator disc that are parallel to each other, the rotor disc being disposed between the first stator disc and the second stator disc; the clamping part and the rotor disc are respectively arranged on two sides of the first stator disc.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the clamping portion includes a first clamping plate, a second clamping plate, a third clamping plate, and a fourth clamping plate, and the first clamping plate, the second clamping plate, the third clamping plate, and the fourth clamping plate are spliced at respective edges to form a frame-shaped space with two open ends; two ends of the transmission shaft are respectively connected with the second clamping plate and the third clamping plate, the transmission shaft penetrates through the third clamping plate and is connected with the rotor disc, and the transmission strip is arranged between the fourth clamping plate and the transmission shaft; the first connecting component is fixedly connected with the first clamping plate.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the transmission shaft is a gear shaft, the transmission bar is a rack, and the gear shaft is engaged with the rack; the transmission shaft is connected with the clamping part through a bearing.

With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the first connection assembly includes a first connection rod; one end of the first connecting rod is fixedly connected with the clamping part, and the other end of the first connecting rod is provided with a hinged part.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the first connection assembly further includes a second connection rod, one end of the second connection rod is hinged to the hinge portion, and another hinge portion is disposed on the other end of the second connection rod.

With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the circumferential disk surfaces of the stator disks are provided with conductors, and the disk surfaces of the rotor disks facing the stator disks are provided with permanent magnets.

In a second aspect, embodiments of the present application provide a vibration damping apparatus comprising a tower suspended platform, a suspension apparatus, a pendulum rod, a mass, a frequency modulation system, and at least one damping apparatus as described in embodiments of the first aspect of the present application;

one end of the swing rod is connected with the tower frame suspension platform through the suspension device, and the other end of the swing rod is connected with the mass block; one end of the damping device is connected to the mass block, and one end of the frequency modulation system is connected to the mass block and connected to one end of the damping device.

In a third aspect, embodiments of the present application provide a wind turbine generator system, including a tower and a vibration suppressing device as described in embodiments of the second aspect of the present application, the vibration suppressing device being disposed in the tower, and another end of the vibration suppressing device being connected to an inner wall of the tower by a second connecting assembly.

In certain implementations of the third aspect, the damping means includes three; the damping devices are evenly distributed at intervals along the axial direction of the tower, and the transmission bars of two adjacent damping devices form a preset included angle in the radial direction of the tower.

The technical scheme provided by the embodiment of the application has the following beneficial technical effects:

the damping device provided by the application can realize the conversion from the simple pendulum arc motion to the linear reciprocating motion through the mechanical transmission between the transmission shaft and the transmission strip, so that a rotor disc and a stator disc in the damping device realize relative rotary motion to generate damping force, and the energy of an external excitation source is effectively dissipated; because the vibration suppression device adopts the permanent magnet eddy current damping system consisting of the stator disc and the rotor disc and can flexibly form the layout or the realization form of different structures, the vibration suppression device can effectively cope with the application scenes of high shaking frequency and meter-level swing amplitude in the wind generating set, ensure that the wind generating set can properly cope with the vibration of various conditions, protect the safety of the wind generating set and ensure that the set can continuously generate electricity.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a damping device according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a damping assembly according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a vibration suppression device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present application.

Description of reference numerals:

10-tower, 20-tower suspension platform, 30-suspension device, 40-swing rod, 50-mass block, 60-damping device and 70-frequency modulation system;

100-a damping assembly, 200-a first connecting assembly, 300-a second connecting assembly;

110-stator disc, 120-rotor disc, 130-grip, 140-drive shaft, 150-drive bar;

210-a first connecting rod, 220-a hinge, 230-a second connecting rod;

131-bearing, 132-first clamping plate, 133-second clamping plate, 134-third clamping plate, 135-fourth clamping plate.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.

In an embodiment of the first aspect of the present application, there is provided a damping device 60, as shown in fig. 1 and 2, comprising: damping assembly 100, first linkage assembly 200, and second linkage assembly 300.

The damping assembly 100 of the damping device 60 includes a stator disc 110, a rotor disc 120, a clamping portion 130, a transmission shaft 140 and a transmission bar 150; the driving bar 150 is in driving connection with the driving shaft 140, and the driving shaft 140 is arranged in the clamping part 130 and can rotate around the central axis of the driving shaft 140; the driving shaft 140 penetrates the clamping portion 130 to face the side portion of the stator disc 110, and is coaxially and fixedly connected with the rotor disc 120, the stator disc 110 is fixedly connected with the clamping portion 130, and the rotor disc 120 and the stator disc 110 can relatively rotate and generate electromagnetic damping.

A first connecting assembly 200, one end of which is fixedly connected with the clamping portion 130 and the other end of which is provided with a hinge portion 220;

and a second connecting assembly 300 hinged to one end of the driving bar 150.

In the actual working process, because the transmission shaft 140 is arranged in the clamping part 130, the positions of the transmission shaft 140 and the clamping part 130 are kept unchanged, the transmission strip 150 is in transmission connection with the transmission shaft 140, the transmission strip 150 can reciprocate in the length direction of the transmission strip 150, so that the transmission shaft 140 is driven to rotate, and the external energy is converted into momentum of the transmission shaft 140 through the transmission strip 150. Since the driving shaft 140 is coaxially and fixedly connected with the rotor disc 120, the driving shaft 140 and the rotor disc 120 keep rotating synchronously, and the stator disc 110 is fixedly connected with the clamping part 130, the stator disc 110 keeps static, the stator disc 110 and the rotor disc 120 can rotate relatively, and finally, external energy is converted into relative rotation of the stator disc 110 and the rotor disc 120. Since electromagnetic damping can be generated between the stator disc 110 and the rotor disc 120 under relative rotation, energy is dissipated, thereby dissipating external energy applied to the damping device 60.

The electromagnetic damping is a conductor coil rotating in a magnetic field and can generate induced electromotive force, if an external circuit of the conductor coil is closed, induced current can be generated in the conductor coil, the magnetic field generates ampere force on the induced current, couple moment opposite to the original rotating direction is formed, and the electromagnetic damping plays a role in damping the rotation of the conductor coil. Since the stator disc 110 and the rotor disc 120 are generally disc-shaped, when they rotate relatively, they generate a circular induced current due to electromagnetic induction, forming a phenomenon of eddy current, thereby generating a damping force between the rotor disc 120 and the stator disc 110, and achieving dissipation of energy.

There are many implementations of the corresponding structures of the rotor disc 120 and the stator disc 110, and optionally, in some implementations of the above-described embodiments of the present application, conductors are provided on the circumferential disc surfaces of the stator disc 110, and permanent magnets are provided on the disc surfaces of the rotor disc 120 facing the stator disc 110. The conductors or permanent magnets are arranged on mutually facing disk faces of the stator disk or rotor disk, respectively. That is, one of the specific structures of the rotor disc 120 and the stator disc 110 may be: the rotor disc 120 is a permanent magnet part, the stator disc 110 is a conductor part, and the stator disc 110 may specifically be composed of a conductor material, such as copper, aluminum, etc. Another possible structure is: the rotor disc 120 is a conductor disc made of conductive material such as copper, aluminum, etc., and the stator disc 110 is made of permanent magnets, specifically, the permanent magnets can be made by a production process of adhering or mechanically fixing permanent magnet blocks to a back iron plate.

The damping device 60 provided by the application can realize the conversion from simple pendulum circular arc motion to linear reciprocating motion through the mechanical transmission between the transmission shaft 140 and the transmission strip 150, so that the relative rotation motion of the rotor disc 120 and the stator disc 110 in the damping device 60 generates a damping force, the energy of an external excitation source is effectively dissipated, and the vibration is effectively inhibited.

Alternatively, in a possible implementation manner of the embodiment of the first aspect of the present application, as shown in fig. 1, the stator disc 110 includes a first stator disc and a second stator disc that are parallel to each other, and the rotor disc 120 is disposed between the first stator disc and the second stator disc; the clamping part 130 and the rotor disc 120 are respectively disposed at both sides of the first stator disc. That is, the stator disc 110 has a double-disc structure, the first stator disc and the second stator disc have the same shape and size, and when the stator disc 110 is made of permanent magnets, permanent magnet blocks are disposed on the opposite disc surfaces of the first stator disc and the second stator disc. The rotor plate 120 is disposed between the first stator plate and the second stator plate, and the rotor plate 120 has a certain clearance with the first stator plate and the second stator plate on both sides, respectively, so that the rotor plate 120 can rotate relative to the two stator plates 110. The rotor plate 120 is disposed at a position of one side plate surface of the first stator plate and is spaced apart from the one side plate surface of the first stator plate, and the clamping portion 130 is disposed at the other side plate surface of the first stator plate and may be directly disposed on the plate surface of the first stator plate.

The stator plates 110 and the rotor plates 120 are configured in at least two ways, one is in the form of one stator plate 110 and one rotor plate 120, and the other is in the form of two stator plates 110 and one rotor plate 120. When taking the form of one stator disc 110 and one rotor disc 120, the stator disc 110 may be directly disposed on the side of the clamping portion 130 and the stator disc 110 is disposed between the clamping portion 130 and the rotor disc 120, or the stator disc 110 may be coupled to the clamping portion 130 by providing a support rod by which the stator disc 110 is spaced apart from the clamping portion 130 and the rotor disc 120 is disposed between the clamping portion 130 and the stator disc 110.

The damping device 60 having the two stator plates 110 can sufficiently utilize the space, form double electromagnetic damping, and effectively improve the vibration suppression efficiency.

Optionally, in some implementations of the first aspect embodiment of the present application, as shown in fig. 2, the clamping portion 130 includes a first clamping plate 132, a second clamping plate 133, a third clamping plate 134, and a fourth clamping plate 135, and the first clamping plate 132, the second clamping plate 133, the third clamping plate 134, and the fourth clamping plate 135 are spliced at respective edges to form a frame-shaped space with two open ends; two ends of the transmission shaft 140 are respectively connected with the second clamping plate 133 and the third clamping plate 134, the transmission shaft 140 penetrates through the third clamping plate 134 to be connected with the rotor disc 120, and the transmission bar 150 is arranged between the fourth clamping plate 135 and the transmission shaft 140; the first connecting assembly 200 is fixedly connected to the first clamping plate 132.

In this implementation manner, the clamping portion 130 is a half-enclosed frame structure, and the four clamping plates, i.e., the first clamping plate 132, the second clamping plate 133, the third clamping plate 134, and the fourth clamping plate 135, form a frame body with relatively empty space, i.e., the above-mentioned frame-shaped space with two open ends, so that the transmission shaft 140 is accommodated in the frame-shaped space, and meanwhile, the transmission bar 150 is a long strip, so that the transmission bar can be inserted into the frame-shaped space, specifically, enter from the open port at one end, and exit from the open port at the other end. In order to stabilize the transmission bar 150 to move back and forth in a linear direction along the length direction of the transmission bar 150, the transmission bar 150 is disposed between the fourth clamping plate 135 and the transmission shaft 140, so that the fourth clamping plate 135 can bear the transmission bar 150. In order to reduce wear of the drive belt 150, a lubricating medium or structure, such as a grease coating or a bearing 131, may be suitably provided between the drive belt 150 and the fourth clamping plate 135.

Specifically, in the present implementation, the second clamping plate 133 and the third clamping plate 134 may be kept parallel, and both may employ triangular clamping plates, the first clamping plate 132 and the fourth clamping plate 135 serve to connect the second clamping plate 133 and the third clamping plate 134 and maintain a distance, and the fourth clamping plate 135 may employ a long flat plate, provided at the bottom edge positions of the second clamping plate 133 and the third clamping plate 134, and accordingly, the two open ends of the frame-shaped space are two oblique sides of the second clamping plate 133 and the third clamping plate 134, respectively.

Optionally, in some implementations of embodiments of the first aspect of the present application, the transmission shaft 140 is a gear shaft, the transmission bar 150 is a rack, and the gear shaft is engaged with the rack; the transmission shaft 140 is connected to the holder 130 via a bearing 131. The energy can be transmitted accurately by adopting the transmission combination of the rack and the gear shaft. Of course, the drive shaft 140 and the drive strip 150 may be implemented using belts and pulleys having relatively high friction. The driving bar 150 using the rack, as shown in fig. 3, may be configured to have an i-shaped cross section, so as to ensure sufficient strength of the driving bar 150, and at the same time, keep its own light weight, and avoid bending during driving. The length of the driving strip 150 can be specifically set according to the amplitude of the application object, for example, in a wind turbine generator system with an amplitude of meter, the driving strip 150 with a length of meter can be set.

Optionally, in some implementations of embodiments of the first aspect of the present application, as shown in fig. 3, the first connecting assembly 200 includes a first connecting rod 210; one end of the first connecting rod 210 is fixedly connected to the clamping portion 130, and the other end thereof is provided with a hinge portion 220. In order to cope with various installation postures of the damping device 60, the first connection assembly 200 may be specifically configured as an assembly including a first connection rod 210, the first connection rod 210 is in a long rod shape, and one end of the first connection rod 210 is fixedly connected with the clamping portion 130, so that the first connection rod 210 and the clamping portion 130 can keep synchronous movement, and a hinge portion 220 is provided at the other end of the first connection rod 210, so that the damping device 60 has a certain degree of freedom, and the installation adaptability of the damping device 60 is ensured.

Optionally, in a specific embodiment of the above implementation, as shown in fig. 3, the first connecting assembly 200 further includes a second connecting rod 230, one end of the second connecting rod 230 is hinged to the hinge portion 220, and the other end of the second connecting rod 230 is provided with another hinge portion 220. In order to further improve the installation adaptability of the damping device 60, the first connecting assembly 200 includes two connecting rods, namely a first connecting rod 210 and a second connecting rod 230, one end of the second connecting rod 230 is hinged to the hinge 220 on the first connecting rod 210, specifically, the first connecting rod 210 and the second connecting rod 230 are perpendicular to each other, the second connecting rod 230 can rotate around the central axis of the second connecting rod 230 relative to the first connecting rod 210 by means of the hinge 220, and the other end of the second connecting rod 230 is continuously provided with one hinge 220. The first connection assembly 200 in this embodiment enables the damping device 60 to be horizontally disposed, and the installation position is more flexible.

Embodiments of the second aspect of the present application provide a vibration damping apparatus, as shown in fig. 4, comprising a tower suspended platform 20, a suspension apparatus 30, a pendulum bar 40, a mass 50, a frequency modulation system 70 and at least one damping apparatus 60 of any of the embodiments of the first aspect of the present application. One end of the swing rod 40 is connected with the tower suspension platform 20 through the suspension device 30, and the other end of the swing rod 40 is connected with the mass block 50; one end of the damping device 60 is connected to the mass 50 and one end of the frequency modulation system 70 is connected to the mass 50 and to one end of the damping device 60.

The damping device 60 is directly or indirectly connected to the mass 50, for example, the damping device may be connected to the body of the mass 50 or to a connecting member provided to the mass, in particular to an extension extending from the mass. Since the energy transmitted from the excitation source is directly reflected on the mass 50, the damping device 60 connected to the mass 50 can absorb the mechanical energy of the mass 50. The specific number and layout of the damping devices 60 are set according to the actual vibration suppression requirement, for example, 2 damping devices and 4 damping devices which are symmetrically distributed may be set, and 3 damping devices may also be set. Specifically, the damping device 60 is provided with a first connection assembly 200 having a hinge 220 at one end, so that when the mass 50 swings, the damping assembly 100 on the damping device 60 has a certain degree of freedom, allowing only the relative movement between the driving bar 150 and the driving shaft 140. When the mass 50 swings, displacement occurs in two directions perpendicular to each other, and the damping assembly 100 can float up and down along with the mass 50 and can keep relatively still in the horizontal direction through the hinged connection.

An embodiment of the third aspect of the present application provides a wind turbine generator system, as shown in fig. 4, comprising a tower 10 and a vibration suppressing device provided in the second aspect of the present application, the vibration suppressing device being disposed in the tower 10, and the other end of the damping device 60 being connected to the inner wall of the tower 10 by a second connecting assembly 300.

The damping device 60 provided by the application can realize the conversion from simple pendulum arc motion to linear reciprocating motion through the mechanical transmission between the transmission shaft 140 and the transmission strip 150, so that the relative rotation motion of the rotor disc 120 and the stator disc 110 in the damping device 60 generates a damping force, and the energy of an external excitation source is effectively dissipated; because the vibration suppression device in the wind generating set adopts the permanent magnet eddy current damping system consisting of the stator disc 110 and the rotor disc 120 and can flexibly form the layout or the realization form of different structures, the vibration suppression device can effectively cope with the application scenes of high shaking frequency and meter-level swing amplitude in the wind generating set, ensure that the wind generating set can properly cope with the vibration of various conditions, protect the safety of the set and ensure the continuous power generation of the set.

Alternatively, in some implementations of embodiments of the third aspect of the present application, as shown in fig. 3 and 4, the damping device 60 includes three; the damping devices 60 are uniformly spaced along the axial direction of the tower 10, and the transmission bars 150 of two adjacent damping devices 60 form a preset included angle in the radial direction of the tower 10.

In order to adequately cope with the anisotropic excitation source applied to the wind turbine generator system, three damping devices 60 may be provided in the tower 10 of the wind turbine generator system, and the three damping devices 60 may be uniformly distributed in the inner space of the tower 10, specifically, the intervals between the adjacent damping devices 60 are the same in the axial direction of the tower 10. Of course, according to the specific structure of the wind generating set, the axial non-uniform interval distribution can be carried out according to the requirement. And in the radial direction of the tower 10, around the central axis of the tower 10, three damping devices 60 are distributed as required, and two adjacent damping devices 60 are in a preset included angle, because the transmission bar 150 on the damping device 60 is in a long strip shape, and the included angle of the transmission bar 150 of two adjacent damping devices 60 can reflect the relative position of the damping device 60, the transmission bar 150 of two adjacent damping devices 60 is in a preset included angle, which can be 120 degrees, and also can be specifically set according to actual needs, and are not necessarily equal to each other.

In order to distribute a plurality of damping devices 60, for example, three damping devices 60, as required in a limited inner space of the tower 10, as shown in fig. 3, the specific shape and configuration of the first connecting assembly 200 on different damping devices 60 are different, and some damping devices 60 have the first connecting assembly 200 comprising a first connecting rod 210, wherein the first connecting rod 210 is an elongated rod body and is distributed along the radial direction of the tower 10, as shown in fig. 3 for the right damping device 60, and one end of the first connecting rod 210 is fixedly connected to the top of the clamping portion 130, and the other end thereof is hinged to the mass 50 through a hinge 220. Or a first connecting assembly 200 comprising first connecting rods 210, such as the damping device 60 at the bottom side in fig. 3, wherein the first connecting rods 210 are connected to the bottom of the mass 50 through hinges 220 at one end and are fixedly connected to the top end of the clamping portion 130 at the other end, and the first connecting rods 210 are distributed along the axial direction of the tower 10.

The first connecting component 200 of some damping devices 60 includes a first connecting rod 210 and a second connecting rod 230, such as the damping device 60 on the left side in fig. 3, wherein the first connecting rod 210 is first fixedly connected to the top end of the clamping portion 130 in the damping device 60, and then connected to one end of the second connecting rod 230 through a hinge portion 220, the first connecting rod 210 is parallel to the driving rod 150 in the damping device 60, and under the connection of the hinge portion 220, the arbitrary change of the size of the included angle between the first connecting rod 210 and the second connecting rod 230, that is, the damping component 100 floats up and down along the axial direction of the tower 10, can be realized. By providing the first connection assemblies 200 having different shapes and structures, the inner space of the tower 10 can be fully utilized, and the three damping assemblies 100 can be installed in place without affecting each other.

The second connecting assembly 300 of the damping device 60 is specifically used for connecting the damping device 60 to the tower 10 of the wind turbine generator system, the second connecting assembly 300 may specifically be a hinged connecting member including a connecting seat, the connecting seat is connected to the inner wall of the tower 10 in a bolt connection manner, the connecting seat is hinged to one end of the transmission bar 150, the transmission bar 150 is inserted into the clamping portion 130 of the damping device 100, and the other end of the transmission bar 150 is a free end. In terms of the movement pattern of the transmission shaft 140 and the second connecting assembly 300, the axial direction of the hinge shaft of the transmission bar 150 and the second connecting assembly 300 is consistent with the axial direction of the tower 10, i.e. the transmission bar 150 can swing in a plane perpendicular to the central axis of the tower 10 in the hinge connection pattern, but is not movable in the axial direction of the tower 10.

As shown in fig. 4, in the wind turbine generator system including the vibration suppressing device, one end of the frequency modulation system 70 is connected to the mass 50 or an axially extending portion of the mass 50, and is further connected to one end of the damping device 60, and the other end of the frequency modulation system 70 is connected to a platform disposed in the tower 10, so that the adaptability of the vibration suppressing device can be improved.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

1. the damping device provided by the application is simple in structure, has the transmission strip with the length capable of being set according to amplitude requirements, and can realize the conversion from the single pendulum arc motion to the linear reciprocating motion through the mechanical transmission between the transmission strip and the transmission shaft, so that the rotor disc and the stator disc in the damping device realize relative rotation motion, damping force is generated, and the energy of an external excitation source is effectively dissipated.

2. The damping device provided by the application can be provided with the first connecting assembly in various forms, so that the damping device has high installation adaptability.

3. The damping device provided by the application has the advantages that the transmission strip and the transmission shaft adopt a gear and rack meshing transmission structure, so that the vibration of an external excitation source can be accurately and sufficiently converted into the relative rotation of the rotor disc and the stator disc, and the energy transfer is sufficiently realized.

4. The application provides a device but among wind generating set shakes has adopted the permanent magnetism vortex damping system of constituteing by stator disc and rotor dish, and can form the overall arrangement or the realization form of isostructure in a flexible way, consequently can effectively deal with the application scene of high frequency of rocking and the meter level amplitude of oscillation in wind generating set, has ensured that wind generating set can properly deal with the vibration of various condition, has protected the unit safety, and can guarantee that the unit lasts the electricity generation.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. A damping device (60), comprising: a damping assembly (100), a first connection assembly (200) and a second connection assembly (300);

the damping assembly (100) comprises a stator disc (110), a rotor disc (120), a clamping part (130), a transmission shaft (140) and a transmission strip (150); the transmission strip (150) is in transmission connection with the transmission shaft (140), and the transmission shaft (140) is arranged in the clamping part (130) and can rotate around the central shaft of the transmission shaft (140); the drive shaft (140) penetrates through the clamping part (130) and faces to the side part of the stator disc (110), and is coaxially and fixedly connected with the rotor disc (120), the stator disc (110) is fixedly connected on the clamping part (130), and the rotor disc (120) and the stator disc (110) can relatively rotate and generate electromagnetic damping;

one end of the first connecting component (200) is fixedly connected with the clamping part (130), and the other end of the first connecting component is provided with a hinge part (220);

the second connecting component (300) is hinged with one end of the transmission bar (150).

2. A damping device (60) according to claim 1, wherein the stator disc (110) comprises a first stator disc (110) and a second stator disc (110) parallel to each other, the rotor disc (120) being arranged between the first stator disc (110) and the second stator disc (110); the clamping portion (130) and the rotor disc (120) are respectively arranged on both sides of the first stator disc (110).

3. The damping device (60) according to claim 1, wherein the clamping portion (130) comprises a first clamping plate (132), a second clamping plate (133), a third clamping plate (134) and a fourth clamping plate (135), the first clamping plate (132), the second clamping plate (133), the third clamping plate (134) and the fourth clamping plate (135) being joined at respective edges to form a frame-shaped space open at both ends; two ends of the transmission shaft (140) are respectively connected with the second clamping plate (133) and the third clamping plate (134), the transmission shaft (140) penetrates through the third clamping plate (134) to be connected with the rotor disc (120), and the transmission bar (150) is arranged between the fourth clamping plate (135) and the transmission shaft (140); the first connecting component (200) is fixedly connected with the first clamping plate (132).

4. The damping device (60) according to claim 1, wherein the transmission shaft (140) comprises a shaft body and a gear wheel arranged on the shaft body, the transmission bar (150) is a rack, and the gear wheel is meshed with the rack; the shaft body is connected with the clamping part (130) through a bearing (131).

5. The damping device (60) according to claim 1, wherein said first connection assembly (200) comprises a first connecting rod (210); one end of the first connecting rod (210) is fixedly connected with the clamping part (130), and the other end of the first connecting rod is provided with the hinged part (220).

6. A damping device (60) according to claim 5, wherein said first connection assembly (200) further comprises a second connection rod (230), one end of said second connection rod (230) being hinged to said hinge portion (220) and the other end being provided with another of said hinge portions (220).

7. A damping device (60) according to claim 1, characterized in that the circumferential disc surface of the stator disc (110) is provided with conductors and the disc surface of the rotor disc (120) facing the stator disc (110) is provided with permanent magnets.

8. A vibration damping device, comprising a suspended platform (20), a suspended device (30), a pendulum rod (40), a mass (50), a frequency modulation system (70) and at least one damping device (60) according to any one of claims 1 to 7;

one end of the swing rod (40) is connected with the suspension platform (20) through the suspension device (30), and the other end of the swing rod (40) is connected with the mass block (50); one end of the damping device (60) is connected to the mass (50), and one end of the frequency modulation system (70) is connected to the mass (50) and to one end of the damping device (60).

9. A wind power plant comprising a tower (10) and a vibration damping device according to claim 8, said vibration damping device being arranged inside said tower (10), the other end of said damping device (60) being connected to the inner wall of said tower (10) by said second connection assembly (300).

10. Wind park according to claim 9, wherein the damping means (60) comprise three; the damping devices (60) are uniformly distributed at intervals along the axial direction of the tower (10), and in the radial direction of the tower (10), the transmission bars (150) of two adjacent damping devices (60) form a preset included angle.

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