CN108488045A - Damper for blower fan pylon vibration damping - Google Patents
Damper for blower fan pylon vibration damping Download PDFInfo
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- CN108488045A CN108488045A CN201810311326.4A CN201810311326A CN108488045A CN 108488045 A CN108488045 A CN 108488045A CN 201810311326 A CN201810311326 A CN 201810311326A CN 108488045 A CN108488045 A CN 108488045A
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- friction
- bar
- iron sand
- damper
- bucket
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/01—Vibration-dampers; Shock-absorbers using friction between loose particles, e.g. sand
- F16F7/015—Vibration-dampers; Shock-absorbers using friction between loose particles, e.g. sand the particles being spherical, cylindrical or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
-
- 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
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A kind of damper for blower fan pylon vibration damping, friction-bar is mounted in iron sand bucket, and makes to be slidably matched between the side surface of friction-bar and head cover through-hole and the through-hole at iron sand bucket bucket bottom.Friction-bar upper surface is fixed with activity hanging code；The activity hanging code is connected by wirerope with tower top.Fixed pulley is fixed on the support plate of head cover side.It is filled with iron sand in iron sand bucket.The present invention consumes energy using the friction between iron sand and friction-bar, and the work of damper continuous effective is ensured by friction-bar its own gravity, it is simple in structure, installation carries out on ground substantially, working at height is avoided, cylinder inner space is saved, and iron sand volume can be adjusted according to actual amplitude or magnetized to it, blower fan pylon vibration can more efficiently be reduced, be suitable for the wind turbine of land various specifications.
Description
Technical field
It is one kind using iron sand as resisting medium the present invention relates to fan vibration control field, for wind power generating set
The damper of middle tower vibration damping.
Background technology
It is gradually increased with the single-machine capacity of wind-driven generator, cabin, Impeller Mass and tower height are continuously increased, soft
The concept of property tower proposes therewith.Since the design of flexible tower can greatly mitigate tower in the case that tower is higher-height
Weight reduces tower production cost, promotes the market competitiveness of wind turbine, so flexible tower is the following large-scale wind driven generator tower
The trend of cylinder development.However, the property of flexible tower itself determines that draught fan impeller speed can be higher than the intrinsic frequency of tower
Rate, therefore rotate speedup since impeller for flexible tower and be decelerated to dwelling period to rated speed and from rated speed
Between, it can resonate surely with impeller on some rotating speed point.It is easy to happen danger if amplitude is excessive, influences wind power generating set
Reliability, threaten the bulk life time of Wind turbines.Therefore, the vibration damping of blower fan pylon become one of technical field of wind power it is important
Research contents.
The damping unit for being presently used for blower fan pylon vibration damping is broadly divided into two kinds：One is based on tuned mass damper
The vibration attenuation mechanism of (Tuned mass damper, abbreviation TMD), the vibration frequency of mass block itself is adjusted to blower fan pylon and is shaken
Near dynamic main frequency, realize energy from blower fan pylon to mass damper by the interaction between TMD and blower fan pylon
Transfer, to achieve the purpose that vibration damping.Li Xu et al. is in paper " research of small wind turbine tower damping ring vibration damping control "
In develop device damping ring for small-sized wind power generator tower vibration damping, atop a tower is suspended on, in damping ring and tower
Between put rubber material provide damping, by adjusting damping ring the natural frequency of vibration make pylon by resonance region when damping ring generate
The power opposite with pylon, to reduce the vibration of tower.The damping ring simple structure, but only have to the vibration under certain specific frequency
Effectiveness in vibration suppression, damping parameter are not easy to adjust, and have certain limitation.Another kind is granule damper (Particle
Damper, abbreviation PD), it is using between particle and particle when vibration and collision between particle and container inner wall, friction consume
The energy of vibrational system, to reduce the vibration of blower fan pylon.But it is opposite that practical application shows that particulate matter is vibrated with tower top
Move very little, effect unobvious." benzvalene form tuning/granule damper is in wind power generation stepped vibration control in paper for Chen Jun tinkling of pieces of jade et al.
In measurement research " in propose a kind of benzvalene form tuning/granule damper in tower top platform or cabin, combine
The characteristics of tuning spin damper and granule damper, operation principle is identical as TMD when with small vibration, is hindered with particle when vibrating big
Buddhist nun's device is identical.This damper is more complicated in whole installation process, and occupies a large portion space in tower；In public affairs
It accuses in number patent of invention for being CN103266679B and discloses a kind of piston type particle damper, which will
Turning wheel in the form of piston is placed in the shell for filling with particle, is driven piston rod to push when relative displacement occurs between main structure and is dialled
Driving wheel moves between particle, makes the mutual friction of particle phase, collision, consumes energy.This damper be suitably applied main structural with
Between layer, original state cannot be automatically restored to after having an effect, can not continuous work, therefore be not suitable for blower fan pylon
Vibration damping.In general, pylon inner space is limited, most of dampers currently used for blower fan pylon vibration damping are installed either early period
Or later maintenance is all extremely inconvenient, and working at height is abnormally dangerous.In addition, either tuning quality block or particle damp
Device, quality are up to several tons, even tens tons, involve great expense.Therefore, design one kind is easily installed, saves space, convenient for adjusting
Blower fan pylon damper, for blower fan pylon vibration damping control research be of great significance.
Invention content
The vibration damping of blower fan pylon and the deficiency of installation maintenance inconvenience are not suitable for present in professional technique to overcome,
The present invention proposes a kind of damper for blower fan pylon vibration damping.
The present invention includes iron sand bucket, iron sand, friction-bar, head cover, activity hanging code, fixed pulley and wirerope；Wherein, the head cover
It is fixed on the upper surface of iron sand bucket；The friction-bar is located in the iron sand bucket, and the upper end of the friction-bar is made to pass through the head cover several
The through-hole at what center makes the lower end of the friction-bar pass through the through-hole at the iron sand bucket bucket bottom center；The side surface of the friction-bar with
It is to be slidably matched between head cover through-hole and the through-hole at iron sand bucket bucket bottom；The friction-bar upper surface is fixed with the movable hanging
Code；One end of wirerope passes through the activity hanging code, the other end to be connected with tower top around the fixed pulley；The friction-bar lower face
There is tapped blind hole at center, counterweight is installed additional for being needed according to the wind turbine damping experiment of different stage, to increase the quality of friction-bar；
The fixed pulley is fixed on the support plate of the head cover side；It is filled with iron sand in the iron sand bucket.
Internal diameter D >=2d of the iron sand bucket, wherein d are the diameters of the friction-bar.The iron sand bucket upper end has to be connected with head cover
The flange connect.There is the through-hole being slidably matched with the friction-bar at the iron sand bucket bucket bottom center.
The loadings of the iron sand are the 1/4~3/4 of iron sand bucket volume；The grain size of the iron sand is 1~3mm.
The friction-bar is separately installed with limit spiral shell in the circumferential surface of the friction-bar upper end and the circumferential surface of lower end
Nail, for limiting sliding stroke of the friction-bar in iron sand bucket.
The geometric center of the head cover has the through-hole being slidably matched with the friction-bar.Have in the side of the head cover upper surface
Support plate for installing fixed pulley；It is mutually perpendicular between support plate and the head cover.
The center on the vertex and friction-bar upper surface blind hole on the outside of fixed pulley sliding slot slot bottom after installation is in same
On vertical plane, it is vertical shape to make the wirerope of the connection activity hanging code.
Damper proposed by the present invention using iron sand as resisting medium is easily installed, while can pass through according to actual needs
Increase and decrease iron sand amount magnetizes to adjust the size of damping, has apparent effectiveness in vibration suppression.
In the present invention, the friction-bar length is more than the iron sand bucket height, and side is away from difference cloth at upper and lower ends face 1cm
There is threaded hole, so that its top surface is increased not less than the head cover or bottom surface with stop screw positioning after installing and excessively cause the iron
Sand leaks.Upper surface centre bit is equipped with a blind hole, for storing extra wirerope head, and has threaded hole that can connect with the activity hanging code
It connects；Lower face has that threaded hole is spare, and the quality to adjust friction-bar avoids failing.
There are the through-hole that a diameter is slightly larger than the friction-bar diameter, internal diameter and the friction-bar side in the iron sand bucket bucket bottom
Gap between face leaks out to prevent iron sand from bucket less than iron sand diameter.Iron sand bucket outer flange be furnished with threaded hole for
The connection of the head cover.
The iron sand diameter should be greater than the gap between the friction-bar and iron sand bucket bucket bottom internal diameter, in the iron sand
Bucket is internal to be flowed freely with the up and down motion of the friction-bar, to enhance intergranular collision, friction, rub with described
Wiping stick also has certain friction, generates the damping needed for vibration damping.
The wirerope is a tension and the smaller steel strand wires of tensile elongation, and both ends are separately connected wind energy conversion system tower top and are located at tower
The damper of frame bottom transmits pulling force.
The present invention working method be：Damper structure is installed according to above-mentioned component connection type.When wind energy conversion system tower exists
When resonating under external drive or itself Impeller Mass influence of unbalance, atop a tower has different degrees of horizontal swing,
The vibration of tower top pulls the friction-bar in tower bottom to synchronize and moves up and down by wirerope.Tower-cabin shake be by
It is moved at one amplitude extreme value in the half period at another amplitude extreme value, wirerope pulls side friction-bar in iron sand bucket
It moves upwards, the other side is moved downward due to its own gravity；In next half period, it is counter motion that tower-cabin, which is shaken,
The friction-bar to fall just now is pulled to move upwards simultaneously, the other side is then since its own gravity moves downward.Repeatedly, friction-bar
Iron sand flowing is driven during the motion, and the friction between collision, friction and iron sand and friction-bar between iron sand can be consumed from tower
The energy transmitted is pushed up, the flowing of iron sand can enhance the friction between iron sand, reduce vibration.When draught fan impeller yaws, direction of vibration is sent out
When raw change, the damper positioned at different direction comes into force in pairs.For the wind turbine of different size, need can be selected according to amplitude size
The iron sand amount wanted magnetizes to iron sand, controls the size of damping force.
Tower top Vibration Condition is analyzed, tower top vibration is reduced to simple harmonic motion, then the equation of motion is：
Tower top vibrates the energy having：
The energy of damper consumption：Ed=Ef+Ep=Ff·ε+Ep。
Wherein, EfFor friction-bar friction energy-dissipating, ε is the distance that friction-bar moves in one cycle, EpIt is touched between iron sand
It hits, the summation for the energy consumption that rubs.
Damping effect is played, E must be just madetop=Ed, i.e.,
In the case where amplitude is certain, the distance for the rod motion that rubs is also certain.At this point, the key of damper vibration damping exists
In frictional force FfAnd iron sand energy consumption Ep.For the damper, can be adjusted by changing iron sand amount or magnetizing to iron sand,
To adapt to the vibration damping under different Vibration Conditions.
The technical solution adopted in the present invention be for existing blower fan pylon damper occupy tower inner space it is big,
Installation is dangerous, is not easy to what the problems such as adjusting proposed.The vibration of tower top moved upwards by wirerope drawing friction stick, gravity
Lower friction-bar move downward during with iron sand friction energy-dissipating, while iron sand being driven to flow, enhances the collision consumption between iron sand
Can, so that the energy that tower top vibrates is consumed in time.The damper for being distributed in each orientation of tower bottom shakes to different directions
It is dynamic all inhibited, only magnetizes by the volume that changes iron sand or to iron sand and change frictional force FfAnd iron sand energy consumption Ep
Size, so that it may to achieve the purpose that different stage blower fan pylon vibration damping.After introducing the novel fan pylon damper, wind
Machine tower top lateral peak swing under one piece of unbalance mass, is reduced to 0.0071m by 0.0337m, reduces 78.9%, vibration damping
It is with obvious effects, equipment safety is protected, later period maintenance cost is reduced, improves the stability of fan operation；In three pieces of injustice
The iron sand amplitude for weighing the built-in 2.8cm thickness of bottombearing damper is 0.0381m, and the iron sand amplitude of 4.2cm thickness is 0.0235m, is illustrated
Increasing iron sand volume in the case of amount of unbalance is increased makes amplitude reduce, and reduces and the general of accident occurs since amplitude is excessive
Rate makes pylon amplitude controlling within the allowable range.The present invention is different from traditional damper, it utilizes iron sand and friction-bar
Between friction consume energy, and pass through friction-bar its own gravity and ensure the work of damper continuous effective, simple in structure, installation
Substantially it is carried out on ground, avoids working at height, save cylinder inner space, and iron sand volume can be adjusted according to actual amplitude
Or magnetize to it, it can more efficiently reduce blower fan pylon vibration, be suitable for the wind turbine of land various specifications.
Description of the drawings
Attached drawing 1 is damper entirety installation diagram.
Fig. 2 is damper structure sectional view.
Fig. 3 is the structural schematic diagram of friction-bar, wherein：3a is front view, and Fig. 3 b are A-A direction views in 3a, and Fig. 3 c are 3a
Middle B-B direction view, Fig. 3 d are C-C direction views in 3a, and Fig. 3 e are the normal axomometric drawing of 3a, and Fig. 3 f are the vertical view of 3a.
Fig. 4 is the structural schematic diagram of iron sand bucket, and wherein Fig. 4 a are vertical view, and Fig. 4 b are the cross section schematic diagram in the faces A-A,
Fig. 4 c are axonometric drawing.
Fig. 5 is the structural schematic diagram of head cover, and wherein Fig. 5 a, 5b, 5c are respectively the three-view diagram of head cover, and Fig. 5 d are axonometric drawing,
The one side for installing fixed pulley is support plate.
In figure：
1. iron sand bucket；2. iron sand；3. friction-bar；4. head cover；5. activity hanging code；6. fixed pulley；7. wirerope；8. limiting spiral shell
Nail.
Specific implementation mode
The present embodiment is a kind of damper for blower fan pylon vibration damping, including iron sand bucket 1, iron sand 2, friction-bar 3, head cover
4, activity hanging code 5, fixed pulley 6 and wirerope 7.Wherein, the head cover 4 is fixed on the upper surface of iron sand bucket 1；The friction-bar 3
In in the iron sand bucket 1, and the upper end of the friction-bar is made to pass through the through-hole of the head cover geometric center, makes the lower end of the friction-bar
Through-hole across the iron sand bucket bucket bottom center；The through-hole of the side surface and head cover through-hole and iron sand bucket bucket bottom of the friction-bar 3
Between be to be slidably matched.3 upper surface of the friction-bar is fixed with the activity hanging code 5；One end of the wirerope 7 passes through the work
Dynamic hanging code, the other end are connected around the fixed pulley 6 with tower top.It is extra that the center of 3 upper surface of the friction-bar is useful for storing
The blind hole of wirerope head.There is tapped blind hole at the center of 3 lower face of the friction-bar, for the wind turbine damping experiment according to different stage
It needs, counterweight is installed additional, to increase the quality of friction-bar.The fixed pulley 6 is fixed on the support plate of the head cover side.
It is filled with iron sand 2 in the iron sand bucket.
Internal diameter D >=2d of the iron sand bucket 1, wherein d are the diameters of the friction-bar 3.The iron sand bucket upper end has and head cover
The flange of connection.There is the through-hole being slidably matched with the friction-bar 3 at the iron sand bucket bucket bottom center.
The loadings of the iron sand 2 are the 1/4~3/4 of iron sand bucket volume；The grain size of the iron sand 2 is 1~3mm.
The friction-bar 3, which is adopted, to be made of a steel.The friction-bar upper surface center has blind hole, lower face center to have tapped blind hole.
It is separately installed with stop screw 8 in the circumferential surface of 3 upper end of the friction-bar and the circumferential surface of lower end, for limiting the friction
Sliding stroke of the stick in iron sand bucket.
The head cover 4 be made of a steel it is rectangular.Have in the geometric center of the head cover and is slidably matched with the friction-bar 3
Through-hole.It is useful for the support plate of installation fixed pulley 6 in the side of the head cover upper surface；It is mutually perpendicular between support plate and the head cover.
The activity hanging code 5 uses the prior art.The length of wirerope can be adjusted according to actual needs.
The fixed pulley 6 uses the prior art.Vertex on the outside of fixed pulley sliding slot slot bottom after installation and the friction-bar
The center of upper surface blind hole is on same vertical plane, and it is vertical shape to make the wirerope of the connection activity hanging code.
When work, the side-to-side vibrations of tower top is moved by 7 drawing friction stick 3 of wirerope in iron sand bucket, friction-bar 3 and iron sand
It flows iron sand 2 while 2 friction, enhances the friction and collision between iron sand, further promote the consumption of energy.When rubbing
Wiping when stick 3 rises to stroke pole can fall under self gravitation effect again, return to original state to start the work in next period
Make, ensures the damper continuous effective.
When installation, the friction-bar 3 is penetrated from 1 bottom through-hole of iron sand bucket, is blocked by lowermost limit screw 8, according to
Design requirement first determines the frictional damping that the weight of the required friction-bar 3 and the iron sand 2 provide, then by giving
3 bottom of friction-bar is stated to add mass block and inject corresponding iron sand 2 to meet the requirements.3 top of the friction-bar is again from the head cover 4
Through-hole pass through, top equally use 8 fixed position of stop screw.In this way, the friction-bar 3, iron sand bucket 1 and head cover 4 are with regard to group
It closes and completes, then iron sand bucket upper flanges are connect with head cover bottom surface with screw.7 one end of the wirerope is connected to activity hanging code 5, separately
One end is connected with tower top, is in pre-tensioned state, and around the fixed pulley 6 for being mounted on 4 side support plate of the head cover to adjust
Perfect square to.The activity hanging code 5 is connected with 3 top surface of the friction-bar by screw.In this manner, successively in blower fan pylon
Surrounding uniform mounted in pairs damper so that the damper of wind turbine all directions when amplitude is excessive can play work
With.It is consumed with the friction and collision of iron sand, the energy being transmitted through from tower top when being moved up and down due to the friction-bar 3.
The present embodiment utilize iron sand between and the friction energy-dissipating of friction-bar and iron sand reduce fan vibration.Since friction-bar exists
Active movement drives iron sand flowing in iron sand, and collision friction consumes energy between enhancing iron sand, and is returned under self gravitation effect
Original state with continuous work, not only overcome granule damper multilayer accumulation, inefficiency the problem of, but also its installation, tear open
It unloads and is substantially carried out on ground, greatly reduce the danger of operation, saved space in tower, operability is strong, vibration damping
It works well.The friction-bar quality and iron sand volume can be adjusted according to the wind turbine amplitude of different size simultaneously or iron sand is filled
Magnetic, it is applied widely.
Claims (6)
1. a kind of damper for blower fan pylon vibration damping, which is characterized in that including iron sand bucket, iron sand, friction-bar, head cover, work
Dynamic hanging code, fixed pulley and wirerope；Wherein, the head cover is fixed on the upper surface of iron sand bucket；The friction-bar is located at the iron sand bucket
It is interior, and the upper end of the friction-bar is made to pass through the through-hole of the head cover geometric center, so that the lower end of the friction-bar is passed through the iron sand bucket bucket
The through-hole at bottom center；It is to be slidably matched between the side surface of the friction-bar and head cover through-hole and the through-hole at iron sand bucket bucket bottom；
The friction-bar upper surface is fixed with the activity hanging code；One end of wirerope passes through the activity hanging code, and the other end is around described fixed
Pulley is connected with tower top；There is tapped blind hole at the center of the friction-bar lower face, for real according to the wind turbine vibration damping of different stage
It tests and needs to install counterweight additional, to increase the quality of friction-bar；The fixed pulley is fixed on the support plate of the head cover side；
It is filled with iron sand in the iron sand bucket.
2. being used for the damper of blower fan pylon vibration damping as described in claim 1, which is characterized in that the internal diameter D of the iron sand bucket >=
2d, wherein d are the diameters of the friction-bar；There is the flange being connect with head cover in the iron sand bucket upper end；The iron sand bucket bucket bottom center has
The through-hole being slidably matched with the friction-bar.
3. being used for the damper of blower fan pylon vibration damping as described in claim 1, which is characterized in that the loadings of the iron sand are iron
The 1/4~3/4 of sand bucket volume；The grain size of the iron sand is 1~3mm.
4. being used for the damper of blower fan pylon vibration damping as described in claim 1, which is characterized in that the friction-bar is in the friction
The circumferential surface of stick upper end and the circumferential surface of lower end are separately installed with stop screw, for limiting the friction-bar in iron sand bucket
Sliding stroke.
5. being used for the damper of blower fan pylon vibration damping as described in claim 1, which is characterized in that the geometric center of the head cover has
The through-hole being slidably matched with the friction-bar；It is useful for the support plate of installation fixed pulley in the side of the head cover upper surface；Support plate with
It is mutually perpendicular between the head cover.
6. being used for the damper of blower fan pylon vibration damping as described in claim 1, which is characterized in that the fixed pulley sliding slot slot after installation
Vertex and the center of friction-bar upper surface blind hole on the outside of bottom are on same vertical plane, make the connection activity hanging code
Wirerope is vertical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311326.4A CN108488045B (en) | 2018-04-09 | 2018-04-09 | Damper for vibration reduction of fan tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311326.4A CN108488045B (en) | 2018-04-09 | 2018-04-09 | Damper for vibration reduction of fan tower |
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| Publication Number | Publication Date |
|---|---|
| CN108488045A true CN108488045A (en) | 2018-09-04 |
| CN108488045B CN108488045B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311326.4A Active CN108488045B (en) | 2018-04-09 | 2018-04-09 | Damper for vibration reduction of fan tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109441730A (en) * | 2018-12-19 | 2019-03-08 | 上海电气风电集团有限公司 | Tower frame shock absorbing device and pylon including it |
| CN113685485A (en) * | 2021-09-07 | 2021-11-23 | 湖南科技大学 | Double-layer cantilever support self-anchored flexible tower mast structure vibration damping cable |
| CN114776120A (en) * | 2022-04-27 | 2022-07-22 | 北京工业大学 | Triangular hysteretic damping device with negative stiffness characteristic |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441730A (en) * | 2018-12-19 | 2019-03-08 | 上海电气风电集团有限公司 | Tower frame shock absorbing device and pylon including it |
| CN113685485A (en) * | 2021-09-07 | 2021-11-23 | 湖南科技大学 | Double-layer cantilever support self-anchored flexible tower mast structure vibration damping cable |
| CN114776120A (en) * | 2022-04-27 | 2022-07-22 | 北京工业大学 | Triangular hysteretic damping device with negative stiffness characteristic |
| CN114776120B (en) * | 2022-04-27 | 2023-10-03 | 北京工业大学 | Triangle hysteresis damping device with negative rigidity characteristic |
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