CN101571099A - Tower tube vibration absorber - Google Patents
Tower tube vibration absorber Download PDFInfo
- Publication number
- CN101571099A CN101571099A CNA2008100369487A CN200810036948A CN101571099A CN 101571099 A CN101571099 A CN 101571099A CN A2008100369487 A CNA2008100369487 A CN A2008100369487A CN 200810036948 A CN200810036948 A CN 200810036948A CN 101571099 A CN101571099 A CN 101571099A
- Authority
- CN
- China
- Prior art keywords
- tower tube
- flexible element
- amplification device
- damper
- stroke amplification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Abstract
The invention relates to a tower tube vibration absorber which comprises at least one vibration unit arranged vertically in the tower tube. The vibration unit comprises a first stroke amplifier, a second stroke amplifier, a first flexible element, a second flexible element and a damper, wherein the first stroke amplifier is arranged at the first side of the tower tube, the second stroke amplifier is arranged at the second side of the tower tube, and the first side of the tower tube is opposite to the second side thereof; the first end of the first flexible element is connected with the first stroke amplifier, and the second end is connected with the second side of the tower tube; the first end of the second flexible element is connected with the second stroke amplifier, and the second end is connected with the first side of the tower tube; the first stroke amplifier is communicated with the second stroke amplifier, and the damper is arranged on the communication path.
Description
Technical field
The present invention relates to vibration damping equipment in a kind of tower tube, particularly relate to a kind of interior vibration damping equipment of tower tube of wind motor.
Background technique
As shown in Figure 1, wind motor comprises tower tube 1, cabin 2, impeller 3 (blade and wheel hub), and cabin 2 is arranged on the top of tower tube 1, and impeller 3 is arranged on the cabin 2 rotationally.
The first rank beam frequency of the tower tube of wind motor is the problem that people extremely pay close attention to.For example, one is high is the tower tube of 50m, under the excitation of certain external force, will origination interval several seconds rock back and forth.This forward backward wave the single order corner frequency that corresponding frequency is called the tower tube.The single order corner frequency of tower tube is mainly by the internal diameter of the barrel of the height of tower tube, tower tube and the decisions such as weight of thickness and cabin and rotor.When the frequency of the rotation of the beam frequency of tower tube and impeller near the time, will play amplification to the flexure vibrations of tower tube.
Blade self is also flexible, also can vibrate under certain frequency.The vibration of blade also can be played the effect of amplification to the vibration of tower tube.Situation worst is, numerous factors all play the time spent of doing of enhancing to the vibration of tower tube, and the Oscillation Amplitude of tower tube will constantly increase, and when reaching certain amplitude, will other parts of tower tube and wind motor be damaged.
A kind of method that addresses this is that is to take such as the rigidity of adjusting the tower tube in design, reduce the measures such as weight of cabin and impeller.Also must consider problems such as manufacture cost when taking these measures.
On September 16th, 2004, the notification number of bulletin was that DE-A10309825 Germany patent of invention specification discloses a kind of wire rope vibration damping equipment.Propose in this patent with 3 wire rope inclined-pulling tower tubes that have hydraulic damper, wire rope two is connected to tower tube and ground respectively, when tower tube generation first-order bending vibration, hydraulic damper on the wire rope will play the effect that suppresses the vibration of tower tube, and the amplitude of guaranteeing to vibrate is within reasonable range.It is enough thick and long that but this structural requirement wire rope self is wanted, it is far away from the tower tube as far as possible to require wire rope to be connected in the end on ground simultaneously, the increase that this must cause single wind motor to take up room, the construction of wire rope ground simultaneously can increase cost again significantly.
The notification number of announcing on March 1st, 2008 is that Denmark's patent of invention specification of WO2008/000265A1 discloses a kind of wind motor that has the active vibration damping device, and active damping device wherein comprises sensor, control system and the actuator that is installed on cabin, impeller and the tower tube.When sensor detecting arrived excessive oscillating signal, control system will be sent signal to actuator, makes its work, actuator drives wire rope, changes the pull of steel wire size, thereby changes the rigidity of tower tube, finally avoid resonance region, reach the purpose of vibration damping.Wire rope in this invention is arranged in the tower tube, and this mounting type has determined that wire rope is limited to the influence of tower tube rigidity, makes that must really to avoid resonance region very difficult; In addition, the active damping system also exists technical difficulty big, the problem that cost is high.
Summary of the invention
The object of the present invention is to provide a kind of tower tube vibration absorber, taking up room of this tower tube vibration absorber is little, and controlling method is simple.
In order to realize described purpose, tower tube vibration absorber of the present invention, be characterized in, comprise at least one damper unit that vertically is arranged in the tower tube, this damper unit comprises first stroke amplification device, second stroke amplification device, first flexible element, second flexible element and damper, first stroke amplification device is arranged on first side of tower tube, second stroke amplification device is arranged on second side of tower tube, first side of tower tube is relative with second side of tower tube, first end of first flexible element connects first stroke amplification device, and its second end connects second side of tower tube, first end of second flexible element connects second stroke amplification device, and first side of its second end connection tower tube, wherein, first stroke amplification device and second stroke amplification device are communicated with, and damper is arranged on the path of the two connection.
The advantage of tower tube vibration absorber of the present invention is, when the tower tube spurs first flexible element in that first-order bending vibration takes place, the tension force of first flexible element increases, spur first stroke amplification device, first stroke amplification device provides a pulling force to damper, at this moment, the tension force of second flexible element reduces, the second flexible element spare is in relaxed state, thereby second stroke amplification device is in relaxed state, like this, under the pulling of first stroke amplification device and under the yielding of second stroke amplification device, first stroke amplification device amplifies the displacement of first flexible element, and damper can stop this displacement, thereby consumes the vibrational energy of tower tube in the mode of for example friction acting, thereby suppress the vibration of tower tube, played the purpose that reduces the flexure vibrations of tower tube.Otherwise, when the tower tube spurs second flexible element in that first-order bending vibration takes place, the tension force of second flexible element increases, spur second stroke amplification device, second stroke amplification device provides a pulling force to damper, at this moment, first flexible element is in relaxed state, the tension force of first flexible element reduces, and first stroke amplification device also is in relaxed state, like this, under the pulling of second stroke amplification device and under the yielding of first stroke amplification device, damper is started working, and consumes the energy of vibration, has played the purpose that reduces flexure vibrations.As long as each flexible element is in enough tensioning states under the static normality of tower tube, in case the tower tube because of external load the single order vibration takes place, tower tube vibration absorber is made a response immediately, and suppresses the vibration of tower tube by damper, this tower tube vibration absorber is arranged in the tower tube, need not extra construction of base.
Described tower tube vibration absorber, its further characteristics are, in described damper unit, first stroke amplification device and second stroke amplification device are separately positioned on first height in the tower tube, and second end of first flexible element and second end of second flexible element are separately positioned on second height in the tower tube.
Described tower tube vibration absorber, its further characteristics be, in described damper unit, first highly is the middle part or the bottom of tower tube, and second highly is the top of tower tube.
Described tower tube vibration absorber, its further characteristics are, in described damper unit, first stroke amplification device comprises first running block, the first static pulley group and the 3rd flexible element, first end of the 3rd flexible element is with after the tower tube connects, twine first running block and the first static pulley group more successively, second end of the 3rd flexible element connects with damper; Second stroke amplification device comprises second running block, the second static pulley group and the 4th flexible element, and first end of the 4th flexible element twines second running block and the second static pulley group successively with after the tower tube connects, and second end of the 4th flexible element connects with damper.
Described tower tube vibration absorber, its further characteristics be, in the described damper unit, also comprises tightening device, and the 3rd flexible element connects by tightening device with the tower tube, and perhaps the 4th flexible element connects by tightening device with the tower tube.
Described tower tube vibration absorber, its further characteristics are, in the described damper unit, damper is a frcition damper, frcition damper comprises support frame, controlling device, friction member and friction plate, friction member is arranged between the friction plate, can slide with respect to friction plate, one end of friction member connects with the 3rd flexible second end and the other end connects with second end of the 4th flexible element, controlling device connects friction plate and support frame respectively, be used to regulate the frictional force between friction plate and the friction member, support frame fixedly installs with respect to the tower tube.
Described tower tube vibration absorber, its further characteristics are that in the described damper unit, damper is a viscous damper.
Described tower tube vibration absorber, its further characteristics are that in described damper unit, first stroke amplification device and second stroke amplification device are the connecting vessels structure of variable cross section.
Described tower tube vibration absorber, its further characteristics are that in described damper unit, damper is the inner connecting vessels structure that is provided with throttle valve.
Described tower tube vibration absorber, its further characteristics are that the magnification factor of first stroke amplification device or second stroke amplification device is between 10-50.
Aforementioned purpose of the present invention, technological scheme and advantage are with accompanying drawings and embodiment are described further below.
Description of drawings
Fig. 1 is a kind of schematic representation of structure of common wind motor.
Fig. 2 is the schematic representation of structure of the tower tube vibration absorber of the first embodiment of the present invention.
Fig. 3 is the schematic representation of structure of the tower tube vibration absorber of the second embodiment of the present invention.
Fig. 4 is the schematic representation of structure of the tower tube vibration absorber of the third embodiment of the present invention.
Fig. 5 is the schematic representation of structure of the tower tube vibration absorber of the fourth embodiment of the present invention.
Fig. 6 is the schematic representation of the structure of a kind of stroke amplification device among arbitrary embodiment of the present invention.
Fig. 7 is the schematic representation of the structure of the another kind of stroke amplification device among arbitrary embodiment of the present invention.
Fig. 8 is the schematic representation of the structure of the another kind of stroke amplification device among arbitrary embodiment of the present invention.
Fig. 9 is the schematic representation of the structure of a kind of damper among arbitrary embodiment of the present invention.
Figure 10 is the schematic representation of the structure of the another kind of damper among arbitrary embodiment of the present invention.
Embodiment
Below in conjunction with preferred embodiment the present invention is described in detail, should be noted that, in description described later, although employed term is to select from public term, but some term then is the claimant to be judged by it and selects, and the spirit that its detailed meanings should desire discloses according to the present invention is understood.
First embodiment
In the first embodiment of the present invention, tower tube vibration absorber comprises at least one damper unit, and as shown in Figure 2, this damper unit comprises first stroke amplification device 15, second stroke amplification device 25, first flexible element 14, second flexible element 24 and damper 6.This tower tube vibration absorber is the inside that is arranged on tower tube 1 as shown in Figure 1 like this: along at least one vertical cross-section direction of tower tube 1 damper unit being set.In the damper unit as shown in Figure 2, the upper end of the upper end of first flexible element 14 and second flexible element 24 connects with tower tube 1 on the top of tower tube 1, and the upper end of the upper end of first flexible element 14 and second flexible element 24 is oppositely arranged.First flexible element 14 and second flexible element 24 are arranged in the mode that intersection still staggers mutually.The lower end of first flexible element 14 and the second 24 flexible lower ends connect first stroke amplification device 15 and second stroke amplification device 25 respectively.First stroke amplification device 15 and second stroke amplification device 25 are arranged on the middle part of tower tube 1, and are oppositely arranged.The 3rd flexible element 34 of first stroke amplification device 15 and the 4th flexible element 44 of second stroke amplification device 25 connect with damper 6 respectively.Thereby damper 6 is on the communication path of first stroke amplification device 15 and second stroke amplification device 25.The magnification factor of first stroke amplification device 15 is M, and the magnification factor of second stroke amplification device 25 is N, and M and N are positive integer.The displacement meeting of first flexible element 14 is zoomed into M times of displacement of the 3rd flexible element 34 by first stroke amplification device 15.The displacement meeting of second flexible element 24 is zoomed into N times of displacement of the 4th flexible element 44 by second stroke amplification device 25.M and N preferably equate, and M and N preferably are the integer between the 10-50.Aforementioned each flexible element can be the flexible element that any kind such as wire rope, metal tape, steel band, glass fiber bundle, carbon fiber bundle or macromolecule organic fiber tuft can be born pulling force.Damper 6 mainly is when being used in the 3rd flexible element 34 and the 4th flexible element 44 and moving, and does work by the mode of for example friction, consuming the kinetic energy of each flexible element, thereby plays the purpose that suppresses the vibration of tower tube.
Below, will be illustrated the concrete structure of first stroke amplification device 15 and second stroke amplification device 25 in conjunction with Fig. 6, Fig. 7 and Fig. 8, it should be noted that stroke amplification device of the present invention is not limited to this.
With reference to Fig. 2 and Fig. 6, stroke amplification device comprises running block 51, static pulley group 52 and flexible element 4 simultaneously, flexible element 4 corresponding aforesaid the 3rd flexible element 34 or the 4th flexible elements 44, and running block 51 or static pulley group 52 are commercially available prod.Flexible element 4 twines successively and coats running block 51 and static pulley group 52, the one end is connected on the tower tube 1 by tightening device 7, the other end is connected on the friction brake 6, running block 51 is used for connecting with aforesaid first flexible element 14 or second flexible element 24, static pulley group 52 generally is fixed on the flange of tower tube 1 inside, and in the back among Xu Shu the 3rd embodiment and the 4th embodiment, static pulley group 52 also can be arranged on the ground in the tower tube 1.
During work, running block 51 relative static pulley group 52 motions in first flexible element 14 or second flexible element, the 24 pulling stroke amplification devices 5, make both apart from change, because flexible element 4 twines multi-turn on running block 51 and static pulley group 52, the displacement of flexible element 4 is prearranged multiples of flexible element 14 or flexible element 24, so have the effect that stroke amplifies.
Usually, damper 6 acting sizes are proportional to the stroke of flexible element 4, so stroke amplification device of the present invention helps to consume more vibrational energy, and on the other hand, stroke amplification device also helps flexible element 4 stressed improving, this helps selecting for use suitable flexible element 4, also helps tightening up of flexible element 4.By inventor's research, the magnification factor of stroke amplification device is preferably between the 10-50.
Another kind of stroke amplification device can also be a lever construction, as shown in Figure 7, the trip amplifying device comprises lever 5 and flexible element 4, the near-end that the far-end of lever 5 connects flexible element 4 and lever 5 connects aforesaid flexible element 14 or flexible element 24, much less, the trip amplifying device still has aforesaid various advantage.
Another kind of stroke amplification device can also be the connecting vessels structure of variable cross section, as shown in Figure 8, the trip amplifying device comprises connecting vessels 8 and flexible element 4, the wide cross section end of connecting vessels 8 connects aforesaid flexible element 14 or 24, the narrow cross section end of connecting vessels connects flexible element 4, also much less, the trip amplifying device still has aforesaid various advantage.
Three kinds of stroke amplification devices have been enumerated in the front, and these stroke amplification devices also are fit to the tower tube vibration absorber among the aftermentioned embodiment.
Below, in conjunction with Fig. 9 and Figure 10 the concrete structure of damper 6 is illustrated, it should be noted that damper of the present invention is not limited to this, for example can also be viscous damper.
With reference to Fig. 2 and Fig. 9, damper comprises friction member 61, friction plate 62, controlling device 63 and support frame 64 simultaneously.One end of controlling device 63 is connected on the friction plate 62, one end is connected on the support frame 64, the upper-lower position can regulate of friction plate 62, position, the left and right sides is fixing with respect to support frame 64, friction member 61 is clipped between the friction plate 62, the two ends of friction member 61 connect with aforesaid the 3rd flexible element 34 and the 4th flexible element 44 respectively, when 1 flexure vibrations of tower tube, the 3rd flexible element 34 and the 4th flexible element 44 drawing friction spares 61 slide to and fro, support frame 64 generally is fixed on the flange in the tower tube 1, when described first highly was tower tube 1 bottom, support frame 64 also can be fixed on the ground.Friction controlling device 63 can be regulated the upper-lower position of friction plate 62, thereby changes the frictional force between friction plate 62 and the friction member 61, and controlling device 63 can be a spring, oil hydraulic cylinder etc.
In the work, controlling device 63 is set to certain size with frictional force, the 3rd flexible element 34 and the 4th flexible element 44 drawing friction spares 61 do work with respect to friction plate 62 sliding frictions, consume the energy of vibration, the size of acting and the size of frictional force are directly proportional, according to the actual conditions needs, set the size of frictional force, make the amplitude of tower tube be controlled within the reasonable range.In addition, the loss of 6 pairs of tower tubes of whole damper vibrational energy also can increase along with the increase of first-order bending vibration amplitude.
As shown in figure 10, damper comprises connecting vessels 9 and throttle valve 60, and aforementioned the 3rd flexible element 34 and the 4th flexible element 44 connect the two ends of connecting vessels 9 respectively.Much less, this damper also has aforesaid various advantages.
Aforesaid damper also is fit to the tower tube vibration absorber among the aftermentioned embodiment.
Working principle to the tower tube vibration absorber of present embodiment describes below.
When tower tube 1 spurs first flexible element 14 in that first-order bending vibration takes place, the tension force of first flexible element 14 increases, spur first stroke amplification device 15, the 3rd flexible element 34 of first stroke amplification device 15 provides a pulling force for damper 6, at this moment, the tension force of second flexible element 24 reduces, 24 of second flexible elements are in relaxed state, thereby, the 4th flexible element 44 of second stroke amplification device 25 is in relaxed state, like this, under the pulling of the 3rd flexible element 34 of first stroke amplification device 15 and under the yielding of second stroke amplification device 25, the 3rd flexible element 34 begins to move, and damper 6 is along with the 3rd the mobile of flexible element 34 started working, mode with for example friction acting consumes the vibrational energy that the 3rd flexible element 34 transmits the tower tube 1 that comes, thereby the purpose that reduces the flexure vibrations of tower tube has been played in the vibration of inhibition tower tube 1.Otherwise, when tower tube 1 spurs second flexible element 24 in that first-order bending vibration takes place, the tension force of second flexible element 24 increases, spur second stroke amplification device 25, the 4th flexible element 44 of second stroke amplification device 25 provides a pulling force for damper 6, at this moment, first flexible element 14 is in relaxed state, the tension force of first flexible element 14 reduces, and the 3rd flexible element 34 of first stroke amplification device 15 also is in relaxed state, like this, under the pulling of the 4th flexible element 44 of second stroke amplification device 25 and under the yielding of the 3rd flexible element 34 of first stroke amplification device 15, damper 6 is started working, and consumes the energy of vibration, has played the purpose that reduces flexure vibrations.
When tower tube 1 is in static normality, wish that aforementioned each flexible element is in the state of tension, so that delicately the flexure vibrations of tower tube 1 are made a response, therefore, preferably the 3rd flexible element 34 and the 4th flexible element 44 are provided with tightening device, to regulate the tension force of each flexible element under the normality of tower tube.
In first embodiment, first height setting in tower tube 1 is at the middle part of tower tube 1 with first stroke amplification device 15 and second stroke amplification device 25, and second height setting of the upper end of first flexible element 14 and second flexible element 24 in tower tube 1 is at the top of tower tube 1.Adopt such arrangement, first flexible element 14 and second flexible element 24 are less with the angle of substantially horizontal.On the one hand, first flexible element 14 is stressed relative less with second flexible element 24, makes things convenient for selecting for use of flexible element, also makes things convenient for tightening up of flexible element.On the other hand, the absolute stroke of first flexible element 14 and second flexible element 24 is relatively large, therefore just can select the less stroke amplification device of magnification factor for use.In addition, under this arrangement, damper 6 can also suppress the second order flexure vibrations of tower tube 1 preferably.
Second embodiment
The difference of while with reference to the damper unit of Fig. 1 and 3, the second embodiments and first embodiment's tower tube vibration absorber mainly contains two aspects.On the one hand, with first stroke amplification device 15, second stroke amplification device 25 and damper 6 first bottom that highly is arranged on tower tube 1 in tower tube 1, and second top that highly be arranged on tower tube 1 of the upper end of first flexible element 14 and second flexible element 24 in tower tube 1, such first stroke amplification device 15, second stroke amplification device 25 and damper 6 both can be arranged on the internal flange of tower tube 1, also can be installed on the ground in the tower tube 1.On the other hand, two cover damper units (not showing with the damper unit of the perpendicular layout of damper unit among Fig. 3) are set in the inside of tower tube 1, this two covers damper unit is arranged on two orthogonal vertical cross-sections of tower tube 1, and the phase mutual noninterference.
With first bottom that highly is arranged on tower tube 1, second highly is arranged on the top of tower tube 1, the installation and the maintenance of this convenient stroke amplification device 15, stroke amplification device 25 and damper 6; On two orthogonal vertical interfaces, arrange simultaneously such damper unit, can control tower tube 1 at the first-order bending vibration of a plurality of directions.
The 3rd embodiment
Simultaneously with reference to Fig. 1 different with 4, the three embodiments with first embodiment be that in a damper unit, stroke amplification device 15 and 25 is arranged on the middle part of tower tube 1, and damper 6 is arranged on the bottom of tower tube 1.The upper end of first flexible element 14 and second flexible element 24 still is connected to the top of tower tube 1.Under this arrangement, need on the path of the 3rd flexible element 34 and the 4th flexible element 44, upper saw pulley 400 be set respectively.
The tower tube vibration absorber of present embodiment has the advantage of the tower tube vibration absorber of previous embodiment simultaneously, for example first of first stroke amplification device 15 and second stroke amplification device 25 highly is arranged on the bottom of tower tube 1, second of the upper end of first flexible element 14 and second flexible element highly is arranged on the top of tower tube 1, first flexible element 14 and second flexible element 24 are less with the angle of substantially horizontal, make the selecting for use conveniently of flexible element, because damper 6 is arranged on the ground, make things convenient for the installation and the maintenance of damper 6 again.
The 4th embodiment
Simultaneously with reference to Fig. 1 and Fig. 5, in the aforementioned embodiment, if damper 6 is when working by the mode of friction acting, damper can be subjected to the influence of the internal diameter of tower tube 1 to the consumption of the vibrational energy of tower tube 1.What present embodiment was different with the 3rd embodiment is, damper 6 is arranged on the inwall of tower tube 1, and the stroke of the friction member of damper 6 just no longer has been restricted like this.
Though the present invention discloses as above with preferred embodiment, yet it is not in order to limit the present invention, for example, the application of tower tube vibration absorber of the present invention is not limited to the tower tube of wind motor, anyly be familiar with one of ordinary skill in the art, without departing from the spirit and scope of the present invention, should make the variation or the replacement of all equivalences.Therefore, protection scope of the present invention is as the criterion when looking accompanying the scope that the application's claim defined.
Claims (10)
1. a tower tube vibration absorber is characterized in that, comprises at least one damper unit that vertically is arranged in the tower tube, and this damper unit comprises:
First stroke amplification device is arranged on first side of tower tube;
Second stroke amplification device is arranged on second side of tower tube, and first side of tower tube is relative with second side of tower tube;
First flexible element, its first end connects first stroke amplification device, and its second end connects second side of tower tube;
Second flexible element, its first end connects second stroke amplification device, and its second end connects first side of tower tube;
Damper;
Wherein, first stroke amplification device and second stroke amplification device are communicated with, and damper is arranged on the path of the two connection.
2. tower tube vibration absorber according to claim 1, it is characterized in that, in described damper unit, first stroke amplification device and second stroke amplification device are separately positioned on first height in the tower tube, and second end of first flexible element and second end of second flexible element are separately positioned on second height in the tower tube.
3. tower tube vibration absorber according to claim 2 is characterized in that, in described damper unit, first highly is the middle part or the bottom of tower tube, and second highly is the top of tower tube.
4. tower tube vibration absorber according to claim 1, it is characterized in that, in described damper unit, first stroke amplification device comprises first running block, the first static pulley group and the 3rd flexible element, first end of the 3rd flexible element is with after the tower tube connects, twine first running block and the first static pulley group more successively, second end of the 3rd flexible element connects with damper; Second stroke amplification device comprises second running block, the second static pulley group and the 4th flexible element, and first end of the 4th flexible element twines second running block and the second static pulley group successively with after the tower tube connects, and second end of the 4th flexible element connects with damper.
5. tower tube vibration absorber according to claim 4 is characterized in that, in the described damper unit, also comprises tightening device, and the 3rd flexible element connects by tightening device with the tower tube, and perhaps the 4th flexible element connects by tightening device with the tower tube.
6. tower tube vibration absorber according to claim 4, it is characterized in that, in the described damper unit, damper is a frcition damper, frcition damper comprises support frame, controlling device, friction member and friction plate, friction member is arranged between the friction plate, can slide with respect to friction plate, one end of friction member connects with second end of the 3rd flexible element and the other end connects with second end of the 4th flexible element, controlling device connects friction plate and support frame respectively, be used to regulate the frictional force between friction plate and the friction member, support frame fixedly installs with respect to the tower tube.
7, tower tube vibration absorber according to claim 4 is characterized in that, in the described damper unit, damper is a viscous damper.
8. tower tube vibration absorber according to claim 1 is characterized in that, in described damper unit, first stroke amplification device and second stroke amplification device are the connecting vessels structure of variable cross section.
9. tower tube vibration absorber according to claim 1 is characterized in that, in described damper unit, damper is the inner connecting vessels structure that is provided with throttle valve.
10. the frictional damping vibration damping equipment in the tower tube according to claim 1 is characterized in that the magnification factor of first stroke amplification device or second stroke amplification device is between 10-50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100369487A CN101571099A (en) | 2008-05-04 | 2008-05-04 | Tower tube vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100369487A CN101571099A (en) | 2008-05-04 | 2008-05-04 | Tower tube vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571099A true CN101571099A (en) | 2009-11-04 |
Family
ID=41230543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100369487A Pending CN101571099A (en) | 2008-05-04 | 2008-05-04 | Tower tube vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571099A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123484B2 (en) | 2011-02-04 | 2012-02-28 | Vestas Wind Systems A/S | Torsional dynamic damper for a wind turbine and method of using same |
| CN105298198A (en) * | 2015-11-19 | 2016-02-03 | 同济大学 | Buckling prevention and vibration attenuation device suitable for conical tower tube structure of wind power tower |
| CN107630789A (en) * | 2016-07-18 | 2018-01-26 | 西门子公司 | Tower damper |
| CN108005860A (en) * | 2017-12-21 | 2018-05-08 | 沈阳华创风能有限公司 | A kind of wind-driven generator flexible tower |
| CN109458302A (en) * | 2018-12-20 | 2019-03-12 | 三重能有限公司 | Wind power generating set, tower and its component |
| CN109667883A (en) * | 2018-12-26 | 2019-04-23 | 长沙理工大学 | Rubber damping dissipative damping device |
| CN113005880A (en) * | 2021-03-08 | 2021-06-22 | 大连理工大学 | Pulley-heave block device for inhibiting large-span bridge from fluttering |
| CN114738439A (en) * | 2022-04-13 | 2022-07-12 | 同济大学 | Vibration damper for cooling tower |
-
2008
- 2008-05-04 CN CNA2008100369487A patent/CN101571099A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123484B2 (en) | 2011-02-04 | 2012-02-28 | Vestas Wind Systems A/S | Torsional dynamic damper for a wind turbine and method of using same |
| CN105298198A (en) * | 2015-11-19 | 2016-02-03 | 同济大学 | Buckling prevention and vibration attenuation device suitable for conical tower tube structure of wind power tower |
| CN105298198B (en) * | 2015-11-19 | 2017-07-07 | 同济大学 | A kind of anti-buckling vibration absorber suitable for wind tower conical tower barrel structure |
| CN107630789A (en) * | 2016-07-18 | 2018-01-26 | 西门子公司 | Tower damper |
| CN108005860A (en) * | 2017-12-21 | 2018-05-08 | 沈阳华创风能有限公司 | A kind of wind-driven generator flexible tower |
| CN109458302A (en) * | 2018-12-20 | 2019-03-12 | 三重能有限公司 | Wind power generating set, tower and its component |
| CN109458302B (en) * | 2018-12-20 | 2020-04-07 | 三一重能有限公司 | Wind generating set, tower barrel and components thereof |
| CN109667883A (en) * | 2018-12-26 | 2019-04-23 | 长沙理工大学 | Rubber damping dissipative damping device |
| CN113005880A (en) * | 2021-03-08 | 2021-06-22 | 大连理工大学 | Pulley-heave block device for inhibiting large-span bridge from fluttering |
| CN114738439A (en) * | 2022-04-13 | 2022-07-12 | 同济大学 | Vibration damper for cooling tower |
| CN114738439B (en) * | 2022-04-13 | 2024-03-22 | 同济大学 | Vibration damper for cooling tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101571099A (en) | Tower tube vibration absorber | |
| US9868614B2 (en) | Elevator system | |
| US9038783B2 (en) | Rope sway mitigation via rope tension adjustment | |
| US20130195653A1 (en) | Wind turbine and vibration damping method thereof | |
| JP2008151119A (en) | Active tower damper | |
| CN1327084C (en) | Stayed cable shock attenuation device | |
| CN101709567A (en) | Mass damping device of rigid connection space lever of stay cable | |
| CN102770664A (en) | Device and method for reducing loads | |
| CN110714649B (en) | Damping device for wind vibration resistance, communication tower and antenna assembly thereof | |
| CN1141238C (en) | Semi-active type elevator driving device | |
| CN1141239C (en) | Vitual active type elevator driving device | |
| JP2012107584A (en) | Wind turbine and method for damping vibration of the same | |
| CN102493924A (en) | Fan and tower tube thereof | |
| CN1966854A (en) | Apparatus and method for damping or preventing partial vibration of paper machine | |
| WO2003072977A1 (en) | Damping device and method for setting natural frequency of damping body in the damping device | |
| CN101550733B (en) | Stay cable end elastic constraint vibration controlling device | |
| US20110147563A1 (en) | Vibration damping of a ceiling mount carrying a surgical microscope | |
| JP2003278827A (en) | Damper for tower like structure | |
| CN101549816B (en) | Leading wire vibration-proof structure | |
| JPH0310817B2 (en) | ||
| CN112177188A (en) | Device for arranging frequency modulation mass damper far away from vibration point | |
| JP4514046B2 (en) | A vibration absorber using Coriolis force on a rocking body | |
| WO2018109881A1 (en) | Tension support device for elevator | |
| ATE506238T1 (en) | RAIL VEHICLE | |
| JP2689652B2 (en) | Damping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091104 |