CN119103300B - Damper, wind generating set supporting structure and wind generating set - Google Patents
Damper, wind generating set supporting structure and wind generating setInfo
- Publication number
- CN119103300B CN119103300B CN202411216030.6A CN202411216030A CN119103300B CN 119103300 B CN119103300 B CN 119103300B CN 202411216030 A CN202411216030 A CN 202411216030A CN 119103300 B CN119103300 B CN 119103300B
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- damper
- cavity
- inner cylinder
- top plate
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
本发明实施例提供了一种阻尼器、风力发电机组支撑结构及风力发电机组，阻尼器包括外筒、设置于外筒内部的内筒以及限位件；外筒内壁、内筒外壁、限位件之间形成第一腔体，通过在第一腔体中添加阻尼液构成环形调谐液柱阻尼器；内筒内部设置有顶板且顶板与内筒内壁之间密封连接，内筒内壁与顶板之间形成第二腔体，通过在第二腔体中添加阻尼液构成调谐液体阻尼器；第一腔体和第二腔体之间设置有连通阀门；限位件为活塞结构，外筒、内筒与限位件构成粘滞阻尼器，内筒为粘滞阻尼器提供调谐质量，实现了包含多重调谐液柱阻尼减振降载装置，即多重万向调谐液柱阻尼器，增大了阻尼器调谐频带且能够动态调整，提升了阻尼器的减振降载效果。
This invention provides a damper, a wind turbine generator support structure, and a wind turbine generator. The damper includes an outer cylinder, an inner cylinder disposed inside the outer cylinder, and a limiting member. A first cavity is formed between the inner wall of the outer cylinder, the outer wall of the inner cylinder, and the limiting member. A ring-shaped tuned liquid column damper is formed by adding damping fluid into the first cavity. A top plate is provided inside the inner cylinder, and the top plate is sealed 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. 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. The limiting member is a piston structure. The outer cylinder, the inner cylinder, and the limiting member constitute a viscous damper. The inner cylinder provides the tuning mass for the viscous damper. This invention realizes a multi-tuned liquid column damping vibration reduction and load reduction device, namely a multi-omnidirectional tuned liquid column damper, which increases the damper's tuning frequency band and can be dynamically adjusted, thereby improving the damper's vibration reduction and load reduction effect.
Description
Technical Field
The invention relates to the technical field of dampers, in particular to a damper, a wind generating set supporting structure and a wind generating set.
Background
In the context of wind power generation, the upsizing of wind power generation sets is a necessary trend to reduce the generation cost of onshore wind power and offshore wind power. The large-scale wind turbine generator system requires a higher tower, and the whole structure of the wind turbine generator system is used as the largest rotating power system in the world, so that the stability of the wind turbine generator system is particularly important.
At a certain wind speed, wind alternately generates vortexes on two sides of the tower structure and is separated from the surface of the structure, the pressure difference induced by the alternately generated vortexes on the structural object plane can cause the tower to periodically vibrate, and when the self-vibration frequency of the whole structure formed by a machine set-supporting structure is close to the occurrence frequency of the vortexes, the resonance damage of the tower structure is caused, and meanwhile, the fatigue load is obviously increased.
In order to avoid the catastrophic damage of the vortex-induced vibration to the tower structure of the fan, a mode of installing a proper damper on a structural object is adopted in engineering, such as a liquid damper, and the vibration of liquid is utilized to dissipate energy. At present, a liquid damper is generally designed according to a structure which plays a remarkable role in vibration reduction aiming at a certain main vibration frequency of the whole structure. However, in actual engineering, the vibration response frequencies of the tower structure under the action of different internal and external environmental loads are generally greatly different, and the frequency of the whole structure changes in real time along with the service time, so that the damper can have good vibration reduction and load reduction effects only when the tuning frequency of the damper is close to the self-vibration frequency of the whole structure. For example, when wind gradually increases from low speed, the vibration frequency of the whole structure is sequentially changed from low order to high order, and at this time, the damper which originally plays a role in suppressing low order vibration cannot play a good role in suppressing high order vibration, so that the problem of narrow applicable tuning frequency band exists.
Disclosure of Invention
In view of the above, it is proposed to provide a damper, a wind turbine support structure and a wind turbine, which overcome or at least partially solve the above problems, comprising:
The damper comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, and a limiting piece connected between the outer cylinder and the inner cylinder;
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 an annular tuning liquid column damper is formed by adding damping liquid into the first cavity;
A top plate is arranged inside the inner cylinder and is in sealing 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 damping liquid is added into the second cavity to form a tuned liquid damper; a communication valve is arranged between the first cavity and the second cavity, and damping liquid flows between the first cavity and the second cavity through the communication valve by driving the top plate to move up and down so as to adjust tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;
The limiting piece is of a piston structure, the outer barrel, the inner barrel and the limiting piece form a viscous damper, and the inner barrel provides tuning quality for the viscous damper.
Optionally, the damper further comprises a driving device, and the driving device is used for driving the top plate to move up and down.
Optionally, the driving device comprises a driving rod and a motor system, and the driving rod is connected with the top plate.
Optionally, the driving rod is fixedly connected with the top plate or detachably connected with the top plate.
Optionally, the limiting piece comprises a shell and an inner plate, and the shell is connected with the inner plate through a piston.
Optionally, the outer shell and the inner plate are connected by any one of the following materials:
Viscoelastic materials, viscous fluids, and shape memory alloy materials.
Optionally, the limiting parts are provided in plurality, and the spacing distances between the limiting parts are the same.
Optionally, a support is provided at a side of the bottom of the outer cylinder facing the inner cylinder, and the support provides support for the inner cylinder.
Optionally, the bottom of the inner cylinder is slidably connected with the bracket.
Optionally, the support is provided with protruding portion, the inner tube bottom is provided with guide rail portion, protruding portion inserts and establishes guide rail portion.
Optionally, the bracket is in a hollow structure.
Optionally, the support is provided with a support body, be provided with a plurality of fretwork portions on the support body.
Optionally, two ends of the bracket are fixedly connected with the inner wall of the outer cylinder.
A wind turbine generator support structure having a damper as described above disposed therein.
The wind generating set is arranged on the wind generating set supporting structure.
The embodiment of the invention has the following advantages:
In the embodiment of the invention, the damper comprises an outer cylinder, an inner cylinder arranged in the outer cylinder and a limiting piece connected between the outer cylinder and the inner cylinder; the damping device comprises an outer cylinder, an inner cylinder, a damping liquid column damper, a first cavity, a second cavity, a driving device, a triple-load-reducing device, a multiple-load-reducing device and a damping liquid column, wherein the first cavity and the second cavity are formed by the first cavity, the driving device is arranged between the first cavity and the second cavity, the damping liquid flows between the first cavity and the second cavity through the driving valve by driving the top plate to move up and down, the tuning frequency of the annular tuning liquid column damper and the tuning liquid damper is adjusted, the frequency tuning range of the annular tuning liquid column damper and the tuning liquid damper is improved, the tuning frequency ranges of the two dampers have complementarity, the double-tuning function is realized, the limiting piece is of a piston structure, the damping liquid column damper is formed by adding damping liquid into the second cavity, the triple-load-reducing device is formed by the annular tuning liquid column damper, the tuning liquid damper and the viscous liquid damper, namely, the multiple-load-reducing device can not meet the requirements of the dynamic damping liquid column damper after the dynamic vibration damping column damper is driven to move up and down, the dynamic damping liquid column damper can not meet the requirements of the dynamic damping column damper is adjusted, the dynamic damping liquid column resonance frequency can be adjusted, the dynamic damping structure can not meet the requirements of the dynamic column resonance frequency is improved, the dynamic damping structure is improved, the method is suitable for the low-order to high-order natural vibration frequency range of the whole structure of the future large-scale wind turbine generator, and realizes the structure vibration reduction and load reduction of different operation conditions in the whole life period. In addition, the whole structure of the damper has symmetry, and the annular tuned liquid column damper, the tuned liquid damper and the viscous damper can realize tuned vibration reduction of the load excitation effect in all directions and are matched with the randomness of wind load.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a damper according to some embodiments of the present invention;
FIG. 2 is a schematic illustration of an annular tuned liquid damper according to some embodiments of the present invention;
FIG. 3 is a schematic view of an inner barrel of a damper according to some embodiments of the present invention;
Fig. 4 is a schematic structural view of a limiting member of a damper according to some embodiments of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the context of wind power generation, the upsizing of wind power generation sets is a necessary trend to reduce the generation cost of onshore wind power and offshore wind power. The large-scale wind turbine generator system requires a higher supporting structure, and the whole structure of the wind turbine generator system is used as the largest rotating power system in the world, so that the stability of the wind turbine generator system is particularly important.
At a certain wind speed, wind alternately generates vortexes on two sides of the tower structure and is separated from the surface of the structure, the pressure difference induced by the alternately generated vortexes on the structural object plane can cause the tower to periodically vibrate, and when the self-vibration frequency of the whole structure formed by a machine set-supporting structure is close to the occurrence frequency of the vortexes, the resonance damage of the tower structure is caused, and meanwhile, the fatigue load is obviously increased.
In order to avoid the catastrophic damage of the vortex-induced vibration to the wind turbine generator support structure, a mode of installing a proper damper on the support structure is adopted in engineering, such as a liquid damper, and the vibration of liquid is utilized to dissipate energy. At present, a liquid damper is generally designed according to a structure which plays a remarkable role in vibration reduction aiming at a certain main vibration frequency of the whole structure. However, in actual engineering, the vibration response frequencies of the tower structure under the action of different internal and external environmental loads are generally greatly different, and the frequency of the whole structure changes in real time along with the service time, so that the damper can have good vibration reduction and load reduction effects only when the tuning frequency of the damper is close to the self-vibration frequency of the whole structure. For example, when wind gradually increases from low speed, the vibration frequency of the whole structure is sequentially changed from low order to high order, and at this time, the damper which originally plays a role in suppressing low order vibration cannot play a good role in suppressing high order vibration, so that the problem of narrow applicable tuning frequency band exists.
Therefore, the invention provides a damper, wherein the damper has 3 working modes, namely, the damper is tuned by means of annular tuning liquid column damper for structural vibration, the damper is tuned by means of tuning liquid damper for structural vibration, and the damper is tuned by means of viscous damper for structural vibration.
Meanwhile, the volumes of damping fluid in the annular tuned liquid column damper and the tuned liquid damper can be increased or decreased through the driving device, so that the annular tuned liquid column damper and the tuned liquid damper both have wider frequency ranges, and the tuned frequency ranges of the two dampers have complementarity.
For extreme operation conditions, if the tuning frequency after complementation of the annular tuning liquid column damper and the tuning liquid damper still cannot meet the structural requirement, the tuning can be carried out by means of the viscous damper, and the invention can be suitable for the range from low-order to high-order self-vibration frequency of the whole structure of the future large-scale wind turbine generator, and realize structural vibration reduction and load reduction of different operation conditions in the whole life period.
Secondly, due to symmetry of the integral structure, the annular tuned liquid column damper, the tuned liquid damper and the viscous damper can realize tuned vibration reduction of load excitation in all directions, and are matched with randomness of wind load.
Embodiments of the invention are further described below with reference to the accompanying drawings:
Referring to fig. 1, there is shown a schematic structural view of a damper according to some embodiments of the present invention, which may include an outer tub 1, an inner tub 2 disposed inside the outer tub 1, and a stopper 3 connected between the outer tub 1 and the inner tub 2.
As some examples, the outer cylinder and the inner cylinder of the damper may be made of rubber materials (such as styrene-butadiene rubber, natural rubber, silicone rubber, etc.), metal materials (such as steel, aluminum alloy, copper alloy, etc.), composite materials (such as rubber-metal composite, liquid-metal composite, etc.), etc., and those skilled in the art may choose the materials of the outer cylinder and the inner cylinder of the damper according to actual requirements, which is not limited in the present invention.
As shown in fig. 1, the damper outer cylinder 1 includes a plurality of stoppers 3 and an inner cylinder 2.
For a ring tuned liquid column damper:
A first cavity is formed among the inner wall of the outer cylinder 1, the outer wall of the inner cylinder 2 and the limiting piece 3, and damping liquid is added into the first cavity to form the annular tuning liquid column damper.
As some examples, the inner cylinder 2 is disposed inside the outer cylinder 1 and the limiting member 3, a first cavity is formed between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1 and the limiting member 3, and damping liquid may be added into the first cavity to form an annular tuned liquid column damper.
As some examples, the damping fluid may be silicone oil, or a water-glycol mixture, or a polyol, etc., and a material having characteristics of high chemical stability, proper viscosity, high and low temperature resistance, wear resistance, low ph, low toxicity, and low oxidation resistance is used as the damping fluid, and a person skilled in the art may select the material of the damping fluid according to actual requirements, which is not limited in the present invention.
As shown in fig. 2, after the damping fluid is added into the first cavity, an annular tuned liquid column damper 5 is formed.
For tuned liquid dampers:
The inner cylinder 2 is internally provided with a top plate 6, the top plate 6 is in sealing connection with the inner wall of the inner cylinder 2, a second cavity is formed between the inner wall of the inner cylinder 2 and the top plate 6, damping liquid is added into the second cavity to form a tuning liquid damper, a communication valve is arranged between the first cavity and the second cavity, and the top plate 6 is driven to move up and down to enable the damping liquid to flow between the first cavity and the second cavity through the communication valve so as to adjust tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper.
As shown in fig. 3, a top plate 6 may be disposed inside the inner cylinder 2, and the top plate 6 is connected with the inner wall of the inner cylinder 2 in a sealing manner, so that a second cavity 8 is formed between the inner wall of the inner cylinder 2 and the top plate 6. As with fig. 2 and 3, the tuning liquid damper 9 may be constituted by adding damping liquid in the second chamber 8.
As shown in fig. 2 and 3, one or more communication valves may be disposed between the first cavity and the second cavity, and when tuning is required, the top plate 6 may be driven to move up and down, so that the damping liquid added into the second cavity 8 flows between the first cavity and the second cavity 8 through the communication valves, so as to adjust the tuning frequencies of the annular tuning liquid column damper 5 and the tuning liquid damper 9.
In some embodiments of the invention, the damper further comprises a driving device 7, wherein the driving device 7 is used for driving the top plate 6 to move up and down.
In some embodiments of the invention, the drive means 7 comprise a drive rod and a motor system, the drive rod being connected to the top plate 6. As an example, the drive rod is fixedly connected with the top 6 plate, or the drive rod is detachably connected with the top 6 plate.
As shown in fig. 3, a driving device 7 may be disposed at a central position of the top plate 6 with respect to the other surface of the second chamber 8, and a driving rod in the driving device 7 may be connected to the top plate 6 such that a motor system to which the driving device 7 is connected may drive the top plate 6 to move up and down by the driving rod.
As shown in fig. 3, a groove may be further formed on one surface of the top plate 6 opposite to the inner wall of the inner cylinder 2, and a rubber ring 10 may be disposed in the groove, so that the damping fluid injected into the second cavity 8 is prevented from penetrating to the other surface of the top plate 6 opposite to the second cavity 8 when the top plate 6 moves up and down.
For viscous dampers:
the limiting piece 3 is of a piston structure, the outer cylinder 1, the inner cylinder 2 and the limiting piece 3 form a viscous damper, and the inner cylinder 2 provides tuning quality for the viscous damper.
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.
In some embodiments of the present invention, the limiting member 3 includes a housing and an inner plate, and a piston is connected between the housing and the inner plate.
In some embodiments of the invention, the outer shell and the inner plate are connected by any one of a viscoelastic material, a viscous fluid, and a shape memory alloy material.
As shown in fig. 1 and 4, a plurality of limiting pieces 3 can be arranged between the inside of the outer cylinder 1 and the outer wall of the inner cylinder 2 of the damper, and the spacing distances among the plurality of limiting pieces 3 are the same to form the viscous damper, wherein the limiting pieces 3 comprise a shell 12 and an inner plate 11, the shell 12 and the inner plate 11 are connected through a plurality of piston structures 14, and a plurality of springs 13 are further arranged inside the shell 12.
In practical application, the outer cylinder 1, the inner cylinder 2 and the limiting piece 3 form a viscous damper, and the inner cylinder 2 can provide tuning quality for the viscous damper.
As some examples, the viscoelastic material is made of a series of high polymer materials such as propylene compounds, diene compounds, asphalt compounds, styrene compounds and the like with strain hysteresis stress characteristics, the viscous fluid is a fluid with internal friction and shear modulus being different from zero, the shape memory alloy material can comprise copper-aluminum-nickel alloy, nickel-titanium-based shape memory alloy, copper-based shape memory alloy and iron-based shape memory alloy, wherein the shape memory alloy material is an alloy with 'memory', and the shape memory alloy material can recover to an initial shape after being deformed by pressure or temperature change.
For the stent:
in some embodiments of the present invention, a support 4 is disposed at a side of the bottom of the outer cylinder 1 facing the inner cylinder 2, and the support 4 provides support for the inner cylinder 2.
In some embodiments of the invention, the bottom of the inner cylinder 2 is slidably connected to the bracket 4. As an example, the bracket is provided with a protruding portion, the inner cylinder bottom is provided with a guide rail portion, and the protruding portion is inserted in the guide rail portion.
In some embodiments of the present invention, the support 4 is in a hollow structure. As an example, the bracket is provided with a bracket body, and a plurality of hollowed-out parts are arranged on the bracket body.
In some embodiments of the invention, two ends of the bracket are fixedly connected with the inner wall of the outer cylinder.
As shown in fig. 1, a support 4 may be disposed at the bottom of the damper, and support is provided for the inner cylinder 2 through the support 4, and sliding connection may be performed between the bottom of the inner cylinder 2 and the support 4, where the support 4 is in a hollow structure, so that damping fluid in the first cavity may pass through the support 4 to perform free flow.
The invention is illustrated below with reference to fig. 1, 2, 3, 4:
After the damper is applied to the whole structure of the wind turbine generator to tune, damping liquid can be added into a first cavity formed among the inner wall of the outer cylinder 1, the outer wall of the inner cylinder 2 and the limiting piece 3 to form an annular tuning liquid column damper 5, and damping liquid can be added into a second cavity 8 formed between the inner wall of the inner cylinder 2 and the top plate 6 to form the tuning liquid damper.
According to the vibration frequency of the whole structure of the wind turbine, one side of the top plate 6 connected with the driving rod is driven to move up and down by a motor system of the driving device 7, and the added damping liquid can flow between the first cavity and the second cavity through the communicating valve by utilizing the principle of atmospheric pressure, so that the volumes of the annular tuning liquid column damper and the damping liquid in the tuning liquid damper are increased and decreased, and the tuning frequency range of the damper is improved.
If the motor system of the driving device 7 drives the side of the top plate 6 connected with the driving rod to move upwards, damping liquid in the annular tuning liquid column damper 5 flows to the tuning liquid damper 9 through the communication valve, and if the motor system of the driving device 7 drives the side of the top plate 6 connected with the driving rod to move downwards, damping liquid in the tuning liquid damper 9 flows to the first annular tuning liquid damper 5 through the communication valve.
For extreme operation conditions, if the tuning frequency after the annular tuning liquid column damper 5 and the tuning liquid damper 9 are complementary still cannot meet the structural requirement, the viscous damper formed by the outer cylinder 1, the inner cylinder 2 and the limiting piece 3 can be relied on to provide tuning quality for the viscous damper through the inner cylinder 2 for tuning.
The embodiment of the invention comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, and a limiting piece connected between the outer cylinder and the inner cylinder, wherein a first cavity is formed among the inner cylinder wall, the inner cylinder outer wall and the limiting piece, an annular tuning liquid column damper is formed by adding damping liquid in the first cavity, a top plate is arranged in the inner cylinder and is in sealed connection with the inner cylinder wall, a second cavity is formed between the inner cylinder inner wall and the top plate, a tuning liquid damper is formed by adding damping liquid in the second cavity, a communication valve is arranged between the first cavity and the second cavity, a driving device is arranged in the second cavity, the damping liquid flows between the first cavity and the second cavity through the communication valve by driving the top plate to adjust the tuning frequency of the annular tuning liquid column damper and the tuning liquid damper, so as to improve the frequency tuning range of the annular tuning liquid column damper and the tuning liquid damper, the two tuning frequency ranges of the two dampers have complementarity, the limiting piece is of a piston structure, the outer cylinder, the inner cylinder and the limiting piece form a viscous damper, the viscous damper is provided with mass, the annular tuning liquid column damper is provided with the damping liquid damper, the dynamic damping liquid damper is still can not be adjusted by the dynamic damping liquid, the dynamic damping column damper can not be adjusted by the dynamic damping column damper, the dynamic damper can not be adjusted by the dynamic damper, the dynamic damper can not meet the requirements of the dynamic vibration damper, and the dynamic vibration damper can be reduced by the dynamic vibration damper can not meet the requirements of the requirement of the dynamic carrier of the annular tuning column, and the dynamic damper can be adjusted by the dynamic damper has better frequency can be adjusted by the dynamic damper has the dynamic damper can and can be adjusted by the dynamic load can, the method is suitable for the low-order to high-order natural vibration frequency range of the whole structure of the future large-scale wind turbine generator, and realizes the structure vibration reduction and load reduction of different operation conditions in the whole life period. In addition, the whole structure of the damper has symmetry, and the annular tuned liquid column damper, the tuned liquid damper and the viscous damper can realize tuned vibration reduction of the load excitation effect in all directions and are matched with the randomness of wind load.
In some embodiments of the invention, there is also provided a wind turbine support structure having a damper as described above disposed therein.
The damper comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, and a limiting piece connected between the outer cylinder and the inner cylinder;
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 an annular tuning liquid column damper is formed by adding damping liquid into the first cavity;
A top plate is arranged inside the inner cylinder and is in sealing 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 damping liquid is added into the second cavity to form a tuned liquid damper; a communication valve is arranged between the first cavity and the second cavity, and damping liquid flows between the first cavity and the second cavity through the communication valve by driving the top plate to move up and down so as to adjust tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;
The limiting piece is of a piston structure, the outer barrel, the inner barrel and the limiting piece form a viscous damper, and the inner barrel provides tuning quality for the viscous damper.
Optionally, the damper further comprises a driving device, and the driving device is used for driving the top plate to move up and down.
Optionally, the driving device comprises a driving rod and a motor system, and the driving rod is connected with the top plate.
Optionally, the driving rod is fixedly connected with the top plate or detachably connected with the top plate.
Optionally, the limiting piece comprises a shell and an inner plate, and the shell is connected with the inner plate through a piston.
Optionally, the outer shell and the inner plate are connected by any one of the following materials:
Viscoelastic materials, viscous fluids, and shape memory alloy materials.
Optionally, the limiting parts are provided in plurality, and the spacing distances between the limiting parts are the same.
Optionally, a support is provided at a side of the bottom of the outer cylinder facing the inner cylinder, and the support provides support for the inner cylinder.
Optionally, the bottom of the inner cylinder is slidably connected with the bracket.
Optionally, the support is provided with protruding portion, the inner tube bottom is provided with guide rail portion, protruding portion inserts and establishes guide rail portion.
Optionally, the bracket is in a hollow structure.
Optionally, the support is provided with a support body, be provided with a plurality of fretwork portions on the support body.
Optionally, two ends of the bracket are fixedly connected with the inner wall of the outer cylinder.
In some embodiments of the invention, there is also provided a wind power plant provided with a wind power plant support structure as described above.
Wherein the wind park support structure is provided with a damper as described above.
The damper comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, and a limiting piece connected between the outer cylinder and the inner cylinder;
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 an annular tuning liquid column damper is formed by adding damping liquid into the first cavity;
A top plate is arranged inside the inner cylinder and is in sealing 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 damping liquid is added into the second cavity to form a tuned liquid damper; a communication valve is arranged between the first cavity and the second cavity, and damping liquid flows between the first cavity and the second cavity through the communication valve by driving the top plate to move up and down so as to adjust tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;
The limiting piece is of a piston structure, the outer barrel, the inner barrel and the limiting piece form a viscous damper, and the inner barrel provides tuning quality for the viscous damper.
Optionally, the damper further comprises a driving device, and the driving device is used for driving the top plate to move up and down.
Optionally, the driving device comprises a driving rod and a motor system, and the driving rod is connected with the top plate.
Optionally, the driving rod is fixedly connected with the top plate or detachably connected with the top plate.
Optionally, the limiting piece comprises a shell and an inner plate, and the shell is connected with the inner plate through a piston.
Optionally, the outer shell and the inner plate are connected by any one of the following materials:
Viscoelastic materials, viscous fluids, and shape memory alloy materials.
Optionally, the limiting parts are provided in plurality, and the spacing distances between the limiting parts are the same.
Optionally, a support is provided at a side of the bottom of the outer cylinder facing the inner cylinder, and the support provides support for the inner cylinder.
Optionally, the bottom of the inner cylinder is slidably connected with the bracket.
Optionally, the support is provided with protruding portion, the inner tube bottom is provided with guide rail portion, protruding portion inserts and establishes guide rail portion.
Optionally, the bracket is in a hollow structure.
Optionally, the support is provided with a support body, be provided with a plurality of fretwork portions on the support body.
Optionally, two ends of the bracket are fixedly connected with the inner wall of the outer cylinder.
In some embodiments of the invention, there is also provided a wind power plant mounted to a wind power plant support structure as described above, which may also be referred to as a wind power plant support structure being part of a wind power plant.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region, and provide corresponding operation entries for the user to select authorization or rejection.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one does not exclude that there are additional identical elements in a process, method, article or terminal device comprising the element.
While the damper, the wind generating set supporting structure and the wind generating set provided above have been described in detail, the principles and the embodiments of the present invention have been described herein by way of specific examples, the above examples are only for aiding in understanding of the method and the core concept thereof, and meanwhile, the content of the present invention should not be construed as being limited to the embodiments and the application scope of the present invention, since the general knowledge of those skilled in the art will vary according to the concept of the present invention.
Claims (13)
1. The damper is characterized by comprising an outer cylinder, an inner cylinder arranged in the outer cylinder and a limiting piece connected between the outer cylinder and the inner cylinder;
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 an annular tuning liquid column damper is formed by adding damping liquid into the first cavity;
A top plate is arranged inside the inner cylinder and is in sealing 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 damping liquid is added into the second cavity to form a tuned liquid damper; a communication valve is arranged between the first cavity and the second cavity, and damping liquid flows between the first cavity and the second cavity through the communication valve by driving the top plate to move up and down so as to adjust tuning frequencies of the annular tuning liquid column damper and the tuning liquid damper;
the limiting piece is of a piston structure, the outer cylinder, the inner cylinder and the limiting piece form a viscous damper, and the inner cylinder provides tuning quality for the viscous damper;
the support is arranged at one side of the bottom of the outer cylinder, facing the inner cylinder, and is used for providing support for the inner cylinder, and the bottom of the inner cylinder is connected with the support in a sliding manner.
2. The damper according to claim 1, further comprising a driving device for driving the top plate to move up and down.
3. The damper of claim 2, wherein the drive means comprises a drive rod and motor system, the drive rod being connected to the top plate.
4. A damper according to claim 3 wherein the drive rod is fixedly connected to the top plate or is detachably connected thereto.
5. The damper of claim 1, wherein the limiter comprises a housing and an inner plate, the piston connection between the housing and the inner plate.
6. The damper of claim 5, wherein the outer shell and the inner plate are connected using any one of the following materials:
Viscoelastic materials, viscous fluids, and shape memory alloy materials.
7. The damper according to claim 1, wherein a plurality of the stoppers are provided, and a spacing distance between the plurality of stoppers is the same.
8. The damper according to claim 1, wherein the bracket is provided with a boss portion, the inner cylinder bottom is provided with a guide rail portion, and the boss portion is inserted in the guide rail portion.
9. The damper of claim 1, wherein the bracket is a hollowed-out structure.
10. The damper according to claim 9, wherein the bracket is provided with a bracket body, and a plurality of hollowed-out portions are provided on the bracket body.
11. The damper according to claim 1, wherein both ends of the bracket are fixedly connected to the inner wall of the outer cylinder.
12. A wind power unit support structure, characterized in that a damper according to any one of claims 1 to 11 is provided in the wind power unit support structure.
13. A wind power plant, characterized in that the wind power plant is mounted to a wind power plant support structure according to claim 12.
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| CN110630076A (en) * | 2018-06-28 | 2019-12-31 | 北京金风科创风电设备有限公司 | Damper and load-bearing enclosure structure with the damper |
| CN116428308A (en) * | 2023-03-31 | 2023-07-14 | 中国长江三峡集团有限公司 | Ultra-broadband self-tuning liquid damping vibration reduction device and vibration reduction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5250182U (en) * | 1975-10-09 | 1977-04-09 | ||
| JP2020118273A (en) * | 2019-01-28 | 2020-08-06 | 日立オートモティブシステムズ株式会社 | Cylinder device |
| CN112923002B (en) * | 2021-02-23 | 2022-10-25 | 山东科技大学 | Composite impact resistance device and application thereof |
| CN113529996A (en) * | 2021-06-17 | 2021-10-22 | 武汉理工大学 | A Collision Tuned Viscous Mass Damping Device |
| CN215171781U (en) * | 2021-06-24 | 2021-12-14 | 中铁桥研科技有限公司 | A built-in damping device |
| CN114809765B (en) * | 2022-04-18 | 2023-01-31 | 清华大学 | Tuned liquid column damper and tower with adjustable liquid level |
| CN116401778B (en) * | 2023-03-10 | 2026-04-07 | 中国长江三峡集团有限公司 | A method, apparatus, and equipment for designing a ring-shaped tuned liquid column damper. |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630076A (en) * | 2018-06-28 | 2019-12-31 | 北京金风科创风电设备有限公司 | Damper and load-bearing enclosure structure with the damper |
| CN116428308A (en) * | 2023-03-31 | 2023-07-14 | 中国长江三峡集团有限公司 | Ultra-broadband self-tuning liquid damping vibration reduction device and vibration reduction method |
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