Damper, wind generating set supporting structure and wind generating set

Abstract

The embodiment of the invention provides a damper, a wind generating set supporting structure and a wind generating set. The damper comprises an outer barrel, an inner barrel arranged in the outer barrel and a limiting piece. A first cavity is formed among the inner wall of the outer cylinder, the outer wall of the inner cylinder and the limiting piece, and the annular tuning liquid column damper is formed by adding damping liquid into the first cavity; a top plate is arranged in the inner cylinder and is in sealed connection with the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuning liquid damper is formed by adding damping liquid into the second cavity; a communication valve is arranged between the first cavity and the second cavity; the limiting piece is of a piston structure, the outer barrel, the inner barrel and the limiting piece form a viscous damper, the inner barrel provides tuning mass for the viscous damper, the multi-tuning liquid column damping vibration attenuation and load reduction device, namely the multi-universal tuning liquid column damper is included, the tuning frequency band of the damper is increased, dynamic adjustment can be achieved, and the vibration attenuation and load reduction effect of the damper is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dampers, and in particular to a damper, a wind turbine generator set supporting structure and a wind turbine generator set. Background Art

[0002] In the wind power generation scenario, the large-scale wind turbines are an inevitable trend to reduce the cost of onshore and offshore wind power generation. Large-scale wind turbines require the use of taller towers, and the overall structure of the wind turbine is the world's largest rotating power system, so its own stability is particularly important.

[0003] At a certain wind speed, the wind will alternately generate vortices on both sides of the tower structure and detach from the surface of the structure. The pressure difference induced by the alternating vortices on the surface of the structure will cause the tower to vibrate periodically. When the natural frequency of the entire structure composed of the "unit-support structure" is close to the frequency of vortex generation, it will cause resonance damage to the tower structure and significantly increase fatigue loads.

[0004] In order to avoid the catastrophic damage of this vortex-induced vibration to the wind turbine tower structure, the engineering adopts the method of installing suitable dampers on the structure, such as liquid dampers, which use the sloshing of liquid to dissipate energy. It has the advantages of simple structure and low cost, and is widely used. At present, liquid dampers are usually designed according to the structure to play a significant vibration reduction role for a certain main vibration frequency of the whole machine structure. However, in actual engineering, the vibration response frequency of the tower structure under different internal and external environmental loads usually has a large difference, and the frequency of the whole machine structure changes in real time with the service time. Only when the tuning frequency of the damper is close to the natural frequency of the whole machine structure, the damper can have a good vibration reduction and load reduction effect. For example, when the wind gradually increases from low speed, the vibration frequency of the whole machine structure changes from low order to high order in turn. At this time, the damper that originally played a role in suppressing low-order vibrations cannot play a good suppression effect on high-order vibrations, and there is a problem of narrow applicable tuning frequency band. Summary of the invention

[0005] In view of the above problems, a damper, a wind turbine generator set support structure and a wind turbine generator set are proposed to overcome the above problems or at least partially solve the above problems, including:

[0006] A damper, comprising an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a stopper connected between the outer cylinder and the inner cylinder;

[0007] A first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder and the stopper, and a ring-shaped tuned liquid column damper is formed by adding damping liquid into the first cavity;

[0008] A top plate is provided inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuning liquid damper is formed by adding damping liquid in the second cavity; a connecting valve is provided between the first cavity and the second cavity, and the damping liquid flows between the first cavity and the second cavity through the connecting valve by driving the top plate to move up and down, so as to adjust the tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;

[0009] The stopper is a piston structure, the outer cylinder, the inner cylinder and the stopper constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper.

[0010] Optionally, the damper further comprises a driving device, and the driving device is used to drive the top plate to move up and down.

[0011] Optionally, the driving device includes a driving rod and a motor system, and the driving rod is connected to the top plate.

[0012] Optionally, the driving rod and the top plate are fixedly connected or detachably connected.

[0013] Optionally, the limiting member includes an outer shell and an inner plate, and the outer shell and the inner plate are piston-connected.

[0014] Optionally, the outer shell and the inner plate are connected by any of the following materials:

[0015] Viscoelastic materials, viscous fluids, shape memory alloys.

[0016] Optionally, a plurality of the limiting members are provided, and the spacing distances between the plurality of limiting members are the same.

[0017] Optionally, a bracket is provided on a side of the bottom of the outer cylinder facing the inner cylinder, and the bracket provides support for the inner cylinder.

[0018] Optionally, the bottom of the inner cylinder is slidably connected to the bracket.

[0019] Optionally, the bracket is provided with a protrusion, the bottom of the inner cylinder is provided with a guide rail, and the protrusion is inserted into the guide rail.

[0020] Optionally, the support is a hollow structure.

[0021] Optionally, the bracket is provided with a bracket body, and a plurality of hollow parts are provided on the bracket body.

[0022] Optionally, two ends of the bracket are fixedly connected to the inner wall of the outer cylinder.

[0023] A wind turbine generator set supporting structure is provided with the damper as described above.

[0024] A wind generator set is installed on the wind generator set supporting structure.

[0025] The embodiments of the present invention have the following advantages:

[0026] In an embodiment of the present invention, the damper includes an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a limiter connected between the outer cylinder and the inner cylinder; a first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder, and the limiter, and a ring-shaped tuned liquid column damper is formed by adding damping liquid in the first cavity; a top plate is arranged inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuned liquid damper is formed by adding damping liquid in the second cavity; a connecting valve is arranged between the first cavity and the second cavity, and a driving device is arranged in the second cavity, and the damping liquid flows between the first cavity and the second cavity through the connecting valve by driving the top plate to move up and down, so as to adjust the tuning frequency of the ring-shaped tuned liquid column damper and the tuned liquid damper, so as to improve the frequency tuning range of the ring-shaped tuned liquid column damper and the tuned liquid damper. And the tuning frequency ranges of the two dampers are complementary, realizing a double tuning function; the limiter is a piston structure, and the outer cylinder, the inner cylinder and the limiter constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper, forming a triple tuned liquid column damping vibration reduction and load reduction device consisting of an annular tuned liquid column damper, a tuned liquid damper, and a viscous damper, that is, a multiple universal tuned liquid column damper, which improves the damper tuning frequency band and can be dynamically adjusted, improves the vibration reduction and load reduction effect of the damper, reduces the probability of resonance of the tower structure, reduces fatigue loads, and better copes with extreme operating conditions. The tuning frequency of the annular tuned liquid column damper and the tuned liquid damper after complementation still cannot meet the structural requirements, and is suitable for the low-order to high-order natural frequency range of the overall structure of future large-scale wind turbines, and realizes structural vibration reduction and load reduction under different operating conditions throughout the life cycle. In addition, the overall structure of the damper is symmetrical. The annular tuned liquid column damper, tuned liquid damper and viscous damper can all achieve tuned vibration reduction under load excitation in all directions, matching the randomness of wind loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0028] Figure 1is a schematic structural diagram of a damper provided by some embodiments of the present invention;

[0029] Figure 2 is a schematic diagram of the structure of an annular tuned liquid damper provided by some embodiments of the present invention;

[0030] Figure 3 is a schematic diagram of an inner cylinder structure of a damper provided by some embodiments of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of a limiter of a damper provided in some embodiments of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the wind power generation scenario, the large-scale wind turbines are an inevitable trend to reduce the cost of onshore and offshore wind power generation. Large-scale wind turbines require a higher support structure, and the overall structure of the wind turbine is the world's largest rotating power system, so its own stability is particularly important.

[0034] At a certain wind speed, the wind will alternately generate vortices on both sides of the tower structure and detach from the surface of the structure. The pressure difference induced by the alternating vortices on the surface of the structure will cause the tower to vibrate periodically. When the natural frequency of the entire structure composed of the "unit-support structure" is close to the frequency of vortex generation, it will cause resonance damage to the tower structure and significantly increase fatigue loads.

[0035] In order to avoid the catastrophic damage of this vortex-induced vibration to the support structure of the wind turbine, the engineering adopts the method of installing suitable dampers on the support structure, such as liquid dampers, which use the sloshing of liquid to dissipate energy. It has the advantages of simple structure and low cost, and is widely used. At present, liquid dampers are usually designed according to the structure to play a significant vibration reduction role for a certain main vibration frequency of the whole machine structure. However, in actual engineering, the vibration response frequency of the tower structure under different internal and external environmental loads usually has a large difference, and the frequency of the whole machine structure changes in real time with the service time. Only when the tuning frequency of the damper is close to the natural frequency of the whole machine structure, the damper can have a good vibration reduction and load reduction effect. For example, when the wind gradually increases from low speed, the vibration frequency of the whole machine structure changes from low order to high order in turn. At this time, the damper that originally played a role in suppressing low-order vibrations cannot play a good suppression effect on high-order vibrations, and there is a problem of narrow applicable tuning frequency band.

[0036] Therefore, the present invention proposes a damper, wherein the damper has three working modes: one is to tune the structural vibration by relying on an annular tuned liquid column damper; the second is to tune the structural vibration by relying on a tuned liquid damper; and the third is to tune the structural vibration by relying on a viscous damper.

[0037] At the same time, the volume of the damping fluid in the annular tuned liquid column damper and the tuned liquid damper can be increased or decreased by a driving device, so the annular tuned liquid column damper and the tuned liquid damper both have a wider frequency range, and the tuning frequency ranges of the two dampers are complementary.

[0038] For extreme operating conditions, if the tuning frequency after the complementary annular tuned liquid column damper and the tuned liquid damper still cannot meet the structural requirements, the viscous damper can be used for tuning. The present invention can adapt to the low-order to high-order natural frequency range of the overall structure of future large-scale wind turbines, and achieve structural vibration reduction and load reduction under different operating conditions throughout the life cycle.

[0039] Secondly, due to the symmetry of the overall structure, the annular tuned liquid column damper, tuned liquid damper and viscous damper can all achieve tuned vibration reduction under load excitation in all directions, matching the randomness of wind loads.

[0040] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0041] Reference Figure 1 , shows a schematic structural diagram of a damper provided in some embodiments of the present invention, wherein the damper may include an outer cylinder 1, an inner cylinder 2 arranged inside the outer cylinder 1, and a limiting member 3 connected between the outer cylinder 1 and the inner cylinder 2.

[0042] As some examples, the outer cylinder and inner cylinder of the damper can be made of rubber material (such as styrene-butadiene rubber, natural rubber, silicone rubber, etc.), metal material (such as steel, aluminum alloy, copper alloy, etc.), composite material (rubber metal composite, liquid metal composite, etc.), etc., and technicians in this field can select the material of the outer cylinder and inner cylinder of the damper according to actual needs, and the present invention does not impose any restrictions on this.

[0043] like Figure 1 The outer cylinder 1 of the damper includes a plurality of limit members 3 and an inner cylinder 2 .

[0044] For annular tuned liquid column dampers:

[0045] A first cavity is formed between the inner wall of the outer cylinder 1 , the outer wall of the inner cylinder 2 , and the stopper 3 , and a ring-shaped tuned liquid column damper is formed by adding damping liquid into the first cavity.

[0046] As some examples, the inner cylinder 2 is arranged inside the outer cylinder 1 and the limiter 3, and the outer wall of the inner cylinder 2 forms a first cavity with the inner wall of the outer cylinder 1 and the limiter 3. Damping fluid can be added to the first cavity to form an annular tuned liquid column damper.

[0047] As some examples, the damping fluid can be silicone oil, a water-ethylene glycol mixture, or a polyol, etc. Materials with high chemical stability, suitable viscosity, high and low temperature resistance, wear resistance, low pH, low toxicity, and non-oxidative properties can be used as the damping fluid. Those skilled in the art can select the material of the damping fluid according to actual needs, and the present invention does not impose any restrictions on this.

[0048] like Figure 2 After adding damping liquid into the first cavity, an annular tuned liquid column damper 5 is formed.

[0049] For tuned liquid dampers:

[0050] A top plate 6 is provided inside the inner tube 2 and is sealedly connected to the inner wall of the inner tube 2. A second cavity is formed between the inner wall of the inner tube 2 and the top plate 6. A tuned liquid damper is formed by adding damping fluid into the second cavity. A connecting valve is provided between the first cavity and the second cavity. By driving the top plate 6 to move up and down, the damping fluid flows between the first cavity and the second cavity through the connecting valve to adjust the tuning frequencies of the annular tuned liquid column damper and the tuned liquid damper.

[0051] like Figure 3 A top plate 6 can be arranged inside the inner tube 2, and the top plate 6 is connected to the inner wall of the inner tube 2 by a seal, so that a second cavity 8 is formed between the inner wall of the inner tube 2 and the top plate 6. Figure 2 , Figure 3, a tuned liquid damper 9 can be formed by adding damping liquid into the second cavity 8.

[0052] like Figure 2 , Figure 3 One or more connecting valves can be set between the first cavity and the second cavity. When tuning is required, the top plate 6 can be driven to move up and down, so that the damping fluid added to the second cavity 8 can flow between the first cavity and the second cavity 8 through the connecting valve to adjust the tuning frequency of the annular tuning liquid column damper 5 and the tuning liquid damper 9.

[0053] In some embodiments of the present invention, the damper further includes a driving device 7, and the driving device 7 is used to drive the top plate 6 to move up and down.

[0054] In some embodiments of the present invention, the driving device 7 includes a driving rod and a motor system, and the driving rod is connected to the top plate 6. As an example, the driving rod is fixedly connected to the top plate 6, or the driving rod is detachably connected to the top plate 6.

[0055] like Figure 3 A driving device 7 can be set at the center position of the top plate 6 relative to the other side of the second cavity 8, and the driving rod in the driving device 7 is connected to the top plate 6, so that the motor system connected to the driving device 7 can drive the top plate 6 to move up and down through the driving rod.

[0056] like Figure 3 A groove may be provided on one side of the top plate 6 relative to the inner wall of the inner tube 2, and a rubber ring 10 may be provided in the groove to prevent the damping liquid injected into the second cavity 8 from penetrating to the other side of the top plate 6 relative to the second cavity 8 when the top plate 6 moves up and down.

[0057] For viscous dampers:

[0058] The stopper 3 is a piston structure, the outer cylinder 1, the inner cylinder 2 and the stopper 3 constitute a viscous damper, and the inner cylinder 2 provides tuning mass for the viscous damper.

[0059] In some embodiments of the present invention, a plurality of the limiting members 3 are provided, and the spacing distances between the plurality of limiting members 3 are the same.

[0060] In some embodiments of the present invention, the limiting member 3 includes an outer shell and an inner plate, and the outer shell and the inner plate are piston-connected.

[0061] In some embodiments of the present invention, the outer shell and the inner plate are connected by any one of the following materials: viscoelastic material, viscous fluid, and shape memory alloy material.

[0062] like Figure 1, Figure 4 A plurality of limit members 3 can be arranged between the inside of the outer cylinder 1 of the damper and the outer wall of the inner cylinder 2, and the spacing distances between the plurality of limit members 3 are the same, so as to form a viscous damper; wherein the limit members 3 include an outer shell 12 and an inner plate 11, the outer shell 12 and the inner plate 11 are connected by a plurality of piston structures 14, and a plurality of springs 13 are also arranged inside the outer shell 12.

[0063] In practical applications, the outer cylinder 1, the inner cylinder 2 and the limiter 3 form a viscous damper, and the inner cylinder 2 can provide tuning mass for the viscous damper.

[0064] As some examples, the viscoelastic material shown is made of a series of high molecular polymer materials such as propylene compounds, diene compounds, asphalt compounds, styrene compounds, etc., which have the characteristic of strain lag behind stress; the viscous fluid shown is a fluid with internal friction and shear modulus not equal to zero; the shape memory alloy material shown may include copper-aluminum-nickel alloy, nickel-titanium alloy, nickel-titanium-based shape memory alloy, copper-based shape memory alloy, and iron-based shape memory alloy; among them, shape memory alloy materials are alloys with "memory", which can return to their original shape after being deformed by pressure or temperature changes.

[0065] For the bracket:

[0066] In some embodiments of the present invention, a bracket 4 is provided on a side of the bottom of the outer cylinder 1 facing the inner cylinder 2 , and the bracket 4 provides support for the inner cylinder 2 .

[0067] In some embodiments of the present invention, the bottom of the inner cylinder 2 is slidably connected to the bracket 4. As an example, the bracket is provided with a protrusion, the bottom of the inner cylinder is provided with a guide rail, and the protrusion is inserted into the guide rail.

[0068] In some embodiments of the present invention, the bracket 4 is a hollow structure. As an example, the bracket is provided with a bracket body, and the bracket body is provided with a plurality of hollow parts.

[0069] In some embodiments of the present invention, two ends of the bracket are fixedly connected to the inner wall of the outer tube.

[0070] like Figure 1 A bracket 4 can be set at the bottom of the damper to provide support for the inner tube 2, and a sliding connection can be made between the bottom of the inner tube 2 and the bracket 4, wherein the bracket 4 is a hollow structure so that the damping fluid in the first cavity can flow freely through the bracket 4.

[0071] The following is combined with Figure 1 , 2 , 3, 4 are exemplary illustrations of the present invention:

[0072] After the damper of the present invention is applied to the overall structure of the wind turbine for tuning, damping liquid can be added into the first cavity formed between the inner wall of the outer cylinder 1, the outer wall of the inner cylinder 2, and the limit member 3 to form an annular tuning liquid column damper 5, and damping liquid can be added into the second cavity 8 formed between the inner wall of the inner cylinder 2 and the top plate 6 to form a tuning liquid damper.

[0073] According to the vibration frequency of the whole structure of the wind turbine generator set, the motor system of the driving device 7 drives one side of the top plate 6 connected to the driving rod to move up and down. By utilizing the principle of atmospheric pressure, the added damping fluid can flow between the first cavity and the second cavity through the connecting valve to increase or decrease the volume of the damping fluid in the annular tuned liquid column damper and the tuned liquid damper, thereby improving the tuning frequency range of the damper.

[0074] If the motor system of the driving device 7 drives the side of the top plate 6 connected to the driving rod to move upward, the damping liquid in the annular tuned liquid column damper 5 will flow to the tuned liquid damper 9 through the connecting valve. If the motor system of the driving device 7 drives the side of the top plate 6 connected to the driving rod to move downward, the damping liquid in the tuned liquid damper 9 will flow to the first annular tuned liquid damper 5 through the connecting valve.

[0075] For extreme operating conditions, if the tuning frequency after the complementation of the annular tuned liquid column damper 5 and the tuned liquid damper 9 still cannot meet the structural requirements, at this time, the viscous damper composed of the outer tube 1, the inner tube 2 and the limiter 3 can be relied upon, and the tuning mass can be provided for the viscous damper through the inner tube 2 for tuning.

[0076] In an embodiment of the present invention, the damper includes an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a limiter connected between the outer cylinder and the inner cylinder; a first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder, and the limiter, and a ring-shaped tuned liquid column damper is formed by adding damping fluid in the first cavity; a top plate is arranged inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuned liquid damper is formed by adding damping fluid in the second cavity; a connecting valve is arranged between the first cavity and the second cavity, and a driving device is arranged in the second cavity, which drives the top plate to move up and down so that the damping fluid flows between the first cavity and the second cavity through the connecting valve to adjust the tuning frequency of the ring-shaped tuned liquid column damper and the tuned liquid damper, so as to improve the frequency tuning range of the ring-shaped tuned liquid column damper and the tuned liquid damper, and The tuning frequency ranges of the two dampers are complementary, realizing a double tuning function; the limiter is a piston structure, and the outer cylinder, the inner cylinder and the limiter constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper, realizing a third-level tuned liquid column damping vibration reduction and load reduction device including an annular tuned liquid column damper, a tuned liquid damper, and a viscous damper, that is, a multiple universal tuned liquid column damper, which increases the tuning frequency band of the damper and can be dynamically adjusted, improves the vibration reduction and load reduction effect of the damper, reduces the probability of resonance of the tower structure, reduces fatigue loads, and better copes with extreme operating conditions. The tuning frequency of the annular tuned liquid column damper and the tuned liquid damper after complementation still cannot meet the structural requirements, and is suitable for the low-order to high-order natural frequency range of the overall structure of future large-scale wind turbines, and realizes structural vibration reduction and load reduction under different operating conditions throughout the life cycle. In addition, the overall structure of the damper is symmetrical. The annular tuned liquid column damper, tuned liquid damper and viscous damper can all achieve tuned vibration reduction under load excitation in all directions, matching the randomness of wind loads.

[0077] In some embodiments of the present invention, a wind turbine generator set support structure is further provided, wherein the wind turbine generator set support structure is provided with the damper as described above.

[0078] Wherein, the damper comprises an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a stopper connected between the outer cylinder and the inner cylinder;

[0079] A first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder and the stopper, and a ring-shaped tuned liquid column damper is formed by adding damping liquid into the first cavity;

[0080] A top plate is provided inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuning liquid damper is formed by adding damping liquid in the second cavity; a connecting valve is provided between the first cavity and the second cavity, and the damping liquid flows between the first cavity and the second cavity through the connecting valve by driving the top plate to move up and down, so as to adjust the tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;

[0081] The stopper is a piston structure, the outer cylinder, the inner cylinder and the stopper constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper.

[0082] Optionally, the damper further comprises a driving device, and the driving device is used to drive the top plate to move up and down.

[0083] Optionally, the driving device includes a driving rod and a motor system, and the driving rod is connected to the top plate.

[0084] Optionally, the driving rod and the top plate are fixedly connected or detachably connected.

[0085] Optionally, the limiting member includes an outer shell and an inner plate, and the outer shell and the inner plate are piston-connected.

[0086] Optionally, the outer shell and the inner plate are connected by any of the following materials:

[0087] Viscoelastic materials, viscous fluids, shape memory alloys.

[0088] Optionally, a plurality of the limiting members are provided, and the spacing distances between the plurality of limiting members are the same.

[0089] Optionally, a bracket is provided on a side of the bottom of the outer cylinder facing the inner cylinder, and the bracket provides support for the inner cylinder.

[0090] Optionally, the bottom of the inner cylinder is slidably connected to the bracket.

[0091] Optionally, the bracket is provided with a protrusion, the bottom of the inner cylinder is provided with a guide rail, and the protrusion is inserted into the guide rail.

[0092] Optionally, the support is a hollow structure.

[0093] Optionally, the bracket is provided with a bracket body, and a plurality of hollow parts are provided on the bracket body.

[0094] Optionally, two ends of the bracket are fixedly connected to the inner wall of the outer cylinder.

[0095] In some embodiments of the present invention, a wind turbine generator set is further provided. The wind turbine generator set is provided with the wind turbine generator set supporting structure as described above.

[0096] Wherein, the wind turbine generator set supporting structure is provided with the damper as described above.

[0097] Wherein, the damper comprises an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a stopper connected between the outer cylinder and the inner cylinder;

[0098] A first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder and the stopper, and a ring-shaped tuned liquid column damper is formed by adding damping liquid into the first cavity;

[0099] A top plate is provided inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuning liquid damper is formed by adding damping liquid in the second cavity; a connecting valve is provided between the first cavity and the second cavity, and the damping liquid flows between the first cavity and the second cavity through the connecting valve by driving the top plate to move up and down, so as to adjust the tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;

[0100] The stopper is a piston structure, the outer cylinder, the inner cylinder and the stopper constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper.

[0101] Optionally, the damper further comprises a driving device, and the driving device is used to drive the top plate to move up and down.

[0102] Optionally, the driving device includes a driving rod and a motor system, and the driving rod is connected to the top plate.

[0103] Optionally, the driving rod and the top plate are fixedly connected or detachably connected.

[0104] Optionally, the limiting member includes an outer shell and an inner plate, and the outer shell and the inner plate are piston-connected.

[0105] Optionally, the outer shell and the inner plate are connected by any of the following materials:

[0106] Viscoelastic materials, viscous fluids, shape memory alloys.

[0107] Optionally, a plurality of the limiting members are provided, and the spacing distances between the plurality of limiting members are the same.

[0108] Optionally, a bracket is provided on a side of the bottom of the outer cylinder facing the inner cylinder, and the bracket provides support for the inner cylinder.

[0109] Optionally, the bottom of the inner cylinder is slidably connected to the bracket.

[0110] Optionally, the bracket is provided with a protrusion, the bottom of the inner cylinder is provided with a guide rail, and the protrusion is inserted into the guide rail.

[0111] Optionally, the support is a hollow structure.

[0112] Optionally, the bracket is provided with a bracket body, and a plurality of hollow parts are provided on the bracket body.

[0113] Optionally, two ends of the bracket are fixedly connected to the inner wall of the outer cylinder.

[0114] In some embodiments of the present invention, a wind turbine generator set is further provided. The wind turbine generator set is installed on the wind turbine generator set supporting structure as described above. The wind turbine generator set supporting structure may also be referred to as a part of the wind turbine generator set.

[0115] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0116] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0117] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0118] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable terminal device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0121] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0122] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the above elements.

[0123] The damper, wind turbine support structure and wind turbine provided are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A damper, characterized in that: The damper comprises an outer cylinder, an inner cylinder arranged inside the outer cylinder, and a stopper connected between the outer cylinder and the inner cylinder; A first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder and the stopper, and a ring-shaped tuned liquid column damper is formed by adding damping liquid into the first cavity; A top plate is provided inside the inner cylinder and the top plate is sealedly connected to the inner wall of the inner cylinder, a second cavity is formed between the inner wall of the inner cylinder and the top plate, and a tuning liquid damper is formed by adding damping liquid in the second cavity; a connecting valve is provided between the first cavity and the second cavity, and the damping liquid flows between the first cavity and the second cavity through the connecting valve by driving the top plate to move up and down, so as to adjust the tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper; The stopper is a piston structure, the outer cylinder, the inner cylinder and the stopper constitute a viscous damper, and the inner cylinder provides tuning mass for the viscous damper.

2. The damper according to claim 1, characterized in that The damper also includes a driving device, which is used to drive the top plate to move up and down.

3. The damper according to claim 2, characterized in that: The driving device comprises a driving rod and a motor system, and the driving rod is connected to the top plate.

4. The damper according to claim 3, characterized in that: The driving rod is fixedly connected to the top plate, or is detachably connected.

5. The damper according to claim 1, characterized in that: The limiting member comprises an outer shell and an inner plate, and the outer shell and the inner plate are piston-connected.

6. The damper according to claim 5, characterized in that The outer shell and the inner plate are connected by any of the following materials: Viscoelastic materials, viscous fluids, shape memory alloys.

7. The damper according to claim 1, characterized in that A plurality of the limiting members are provided, and the spacing distances between the plurality of limiting members are the same.

8. The damper according to any one of claims 1 to 7, characterized in that: A bracket is arranged on one side of the bottom of the outer cylinder facing the inner cylinder, and the bracket provides support for the inner cylinder.

9. The damper according to claim 8, characterized in that The bottom of the inner cylinder is slidably connected to the bracket.

10. The damper according to claim 9, characterized in that The bracket is provided with a protrusion, the bottom of the inner cylinder is provided with a guide rail, and the protrusion is inserted in the guide rail.

11. The damper according to claim 9, characterized in that The support is a hollow structure.

12. The damper according to claim 11, characterized in that The bracket is provided with a bracket body, and a plurality of hollow parts are provided on the bracket body.

13. The damper according to claim 9, characterized in that The two ends of the bracket are fixedly connected to the inner wall of the outer cylinder.

14. A wind turbine generator support structure, characterized in that: The wind turbine generator support structure is provided with a damper as claimed in any one of claims 1 to 13.

15. A wind turbine generator set, characterized in that: The wind turbine generator set is installed on the wind turbine generator set supporting structure as claimed in claim 14.

Images