CN109441730B - Tower vibration damper and tower comprising same - Google Patents
Tower vibration damper and tower comprising same Download PDFInfo
- Publication number
- CN109441730B CN109441730B CN201811556815.2A CN201811556815A CN109441730B CN 109441730 B CN109441730 B CN 109441730B CN 201811556815 A CN201811556815 A CN 201811556815A CN 109441730 B CN109441730 B CN 109441730B
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- China
- Prior art keywords
- tower
- damper
- connecting rod
- anchor pile
- supporting
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- 238000013016 damping Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002401 inhibitory effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- F03D13/22—Foundations specially adapted for wind motors
-
- 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
-
- 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
-
- 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a tower vibration damper and a tower comprising the same, wherein the tower vibration damper comprises a supporting system, the supporting system comprises a supporting rod and a first connecting block, the supporting rod is fixed on the surface of a tower through the first connecting block, the tower vibration damper further comprises a stay rope, a damper module and an anchor pile system fixed on the ground, and the supporting system, the stay rope, the damper module and the anchor pile system are sequentially connected. The tower vibration damper and the tower comprising the tower vibration damper adopt the combined action of the supporting device, the inhaul cable, the damper module and the elastic system, so that the effect of jointly inhibiting vortex-induced vibration and random vibration of the tower is achieved, meanwhile, the stability of the fan is improved due to the horizontal and vertical pulling force provided by the inhaul cable, the occupied space of the whole device is small, the structure is practical, the manufacturing cost is economical, and the construction feasibility is high.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a tower vibration damper and a tower comprising the same.
Background
As the wind power industry develops, towers used in the wind power industry are also becoming higher. Correspondingly, the flexibility of the tower is increased, and the natural frequency of the whole machine is reduced, so that the probability of vortex-induced vibration of the tower in the whole machine state is increased. In addition, as the power of a single wind generating set is increased, the diameter of the impeller is increased more and more, the random pulsating wind load born by the fan is increased due to the increase of the diameter of the impeller, and the tower is greatly vibrated due to the random wind load, so that the structural strength and the fatigue strength of the high-flexibility tower are adversely affected. Accordingly, there is a need to find a passive method of suppressing tower vortex induced vibration as well as random vibration.
The current measures for suppressing the vibration of the tower mainly include the following: (1) Vibration is avoided through a control system of the fan unit, but when the fan is in power failure, the control system cannot work; (2) Increasing the structural rigidity of the tower, such as by increasing the cross-sectional diameter, increasing the thickness of the drum wall, but this approach would reduce the economics of the project; (3) The tuned mass damper is adopted, or the turbulence device is arranged on the outer surface of the tower, so that vortex-induced vibration of the tower can be restrained, and the random vibration of the tower caused by pulsating wind load is basically not restrained; (4) The suspension cable device is adopted, a cable-stayed steel wire rope is arranged between the top of the tower and the ground, pretensioning and the like are carried out, but in order to achieve the vibration reduction effect, the span of the suspension cable can reach more than 50 meters, the suspension cable is limited by the position of a unit, and engineering implementation is generally difficult.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, a control unit is limited by electric control, but only one turbulence or damping device is not capable of simultaneously inhibiting vortex-induced vibration of a tower and random vibration caused by pulsating wind load, or a reference guy cable occupies large space, engineering implementation is difficult, and economy and practicability are not enough.
The invention solves the technical problems by the following technical scheme:
The tower vibration damper is characterized by comprising a supporting system, wherein the supporting system comprises a supporting rod and a first connecting block, the supporting rod is fixed on the surface of a tower through the first connecting block, the tower vibration damper further comprises a guy cable, a damper module and an anchor pile system fixed on the ground, and the supporting system, the guy cable, the damper module and the anchor pile system are sequentially connected.
Preferably, the support system further comprises an inclined strut, one end of the inclined strut is connected with a second connecting block, and the other end of the inclined strut is connected with the support rod. The use of diagonal braces can make the structure of the whole support device more firm.
Preferably, the damper module includes a damper body and a first connecting rod, and the first connecting rod is located at two ends of the damper body.
Preferably, one end of the pull rope is connected to the end of the support rod, and the other end of the pull rope is connected to the first connecting rod.
Preferably, the damper body is a hydraulic damper or an electromagnetic damper.
Preferably, the support system further comprises a pulley, the pulley is located at one end of the support rod, one end of the guy cable is connected to the tower, the other end of the guy cable is connected to the damper module, and the middle of the guy cable is wound on the pulley.
Preferably, the anchor pile system comprises a second connecting rod and an anchor pile body, wherein the second connecting rod is positioned at one end of the anchor pile body.
Preferably, the tower vibration damping device further comprises an elastic system located between the damper module and the anchor pile system.
Preferably, the elastic system comprises a spring, a cylinder, a movable connecting rod and a fixed connecting rod, wherein the spring is positioned in the cylinder, one end of the spring is connected with the movable connecting rod, the other end of the spring is connected with the top of the inner wall of the cylinder, and the fixed connecting rod is connected with the top of the outer side of the cylinder.
Preferably, the fixed link is connected to the anchor pile system and the movable link is connected to the damper module.
The invention also provides a tower which is characterized in that at least three tower vibration reduction devices are arranged on the tower. The provision of at least three tower vibration damping devices as described above may result in a higher structural stability of the tower.
The invention has the positive progress effects that: the tower vibration damper and the tower comprising the tower vibration damper adopt the combined action of the supporting device, the inhaul cable, the damper module and the elastic system, so that the effect of jointly inhibiting vortex-induced vibration and random vibration of the tower is achieved, meanwhile, the stability of the fan is improved due to the horizontal and vertical pulling force provided by the inhaul cable, the occupied space of the whole device is small, the structure is practical, the manufacturing cost is economical, and the construction feasibility is high.
Drawings
FIG. 1 is a schematic view of a tower vibration damping device of embodiment 1 of the present invention and a tower including the same.
Fig. 2 is a schematic structural view of a support system according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of a damper module according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of an elastic system in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of an anchor pile system according to embodiment 1 of the present invention.
FIG. 6 is a schematic view showing a structure of a tower vibration damping device according to embodiment 2 of the present invention and a tower including the same.
FIG. 7 is a schematic view showing a structure of a tower vibration damping device according to embodiment 3 of the present invention and a tower including the same.
Reference numerals illustrate:
support system 1
Support bar 11
Connecting block 12
Diagonal brace 13
Pulley 14
Stay rope 2
Damper module 3
Damper body 31
First connecting rod 32
Elastic system 4
Spring 41
Barrel 42
Movable link 43
Fixed link 44
Anchor pile system 5
Second connecting rod 51
Anchor pile body 52
Tower 6
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which three preferred embodiments are shown.
Example 1
As shown in fig. 1 and 2, the present invention provides a tower vibration damping device, which comprises a support system 1, wherein the support system 1 comprises a support rod 11 and a connecting block 12, and the connecting block 12 is fixedly welded to one end of the support rod 11. The support system 1 further comprises a diagonal brace 13, whereby the use of the diagonal brace 13 makes the overall support system 1 more structurally sound. One end of the diagonal brace 13 is fixedly welded with a connecting block 12, and the other end of the diagonal brace 13 is fixedly welded at a position in the middle of the supporting rod 11. As an alternative, other fixed connection means may be used. The tower vibration damping device further comprises a guy cable 2, a damper module 3 and an anchor pile system 5, wherein the guy cable 2, the damper module 3 and the anchor pile system 5 are sequentially connected.
As shown in fig. 3, the damper module 3 includes a damper main body 31 and a first connecting rod 32, and the first connecting rod 32 is welded to both ends of the damper main body 31 for connection with other components. The damper main body 31 is a hydraulic damper. In order to achieve the effect of suppressing the overall vibration of the damper module 3, other kinds of dampers such as electromagnetic dampers and the like may also be used.
As shown in fig. 5, the anchor pile system 5 includes a second connecting rod 51 and an anchor pile body 52, and the second connecting rod 51 is welded to one end of the anchor pile body 52 for connection with other components. The anchor pile body 52 of the anchor pile system 5 is fixed to the ground.
One end of the inhaul cable 2 is connected to the tail part of the supporting rod 11, the other end of the inhaul cable 2 is connected to the first connecting rod 32 at the other end of the damper module 3, and the whole inhaul cable 2 is in a tension state.
Finally, three tower vibration reduction devices provided in this embodiment are mounted on the tower 6, that is, the connection blocks 12 of the support system 1 are fixed on the tower 6 by bolts, and then the three tower vibration reduction devices are uniformly distributed at the same height. Such an arrangement may provide a higher structural stability of the tower vibration damping device and the tower comprising the same.
Example 2
As shown in fig. 6, the structure of this embodiment is substantially the same as that of embodiment 1, except that: the support system 1 further comprises a pulley 14, the pulley 14 being fixed to one end of the support bar 11. One end of the guy cable 2 is bound to the tower 6 and then wound around the pulley 14, and the other end is connected to a first connecting rod 32 at the other end of the damper module 3. The pulley 14 is added at one end of the supporting rod 11, so that friction between the inhaul cable 2 and the supporting rod 11 can be avoided, the inhaul cable 2 can deform due to the tensioning state, the deformation of the inhaul cable 2 is not restrained by the pulley 14, and the effect of inhibiting vibration of the tower is better achieved.
Example 3
As shown in fig. 4 and 7, the structure of this embodiment is substantially the same as that of embodiment 1, except that: the tower vibration damping device further comprises an elastic system 4. That is, in order to adjust the natural frequency of the entire tower vibration damper, to avoid resonance of the tower vibration damper with the tower 6, an elastic system 4 is installed between the damper module 3 and the anchor pile system 5. The elastic system 4 comprises a spring 41, a cylinder 42, a movable link 43 and a fixed link 44. The spring 41 is positioned in the cylinder 42, one end of the spring 41 is fixed on the movable connecting rod 43, the other end of the spring 41 is fixed on the top of the inner wall of the cylinder 42, and the fixed connecting rod 44 is welded on the top of the outer side of the cylinder 42. Other elastic means may be used in order to achieve a better effect of avoiding resonance of the tower vibration damping means with the tower 6. The fixed link 44 is bolted to the second connecting rod 51 of the anchor pile system 5 and the movable link 43 is bolted to the first connecting rod 32 of the damper module 3. As an alternative, other articulation means may be used.
The tower vibration damper of the embodiment is not limited to the field of towers of wind turbine generator systems, and can be used on the outer wall of a high-rise structure where vibrations may occur, such as a large chimney, a signal tower, a lamppost, etc.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (5)
1. The tower vibration damper is characterized by comprising a supporting system, wherein the supporting system comprises a supporting rod and a first connecting block, the supporting rod is fixed on the surface of a tower through the first connecting block, the tower vibration damper further comprises a stay rope, a damper module and an anchor pile system fixed on the ground, and the supporting system, the stay rope, the damper module and the anchor pile system are sequentially connected;
The tower vibration damper further comprises an elastic system, wherein the elastic system is positioned between the damper module and the anchor pile system, the elastic system comprises a spring, a cylinder body, a movable connecting rod and a fixed connecting rod, the spring is positioned in the cylinder body, one end of the spring is connected with the movable connecting rod, the other end of the spring is connected with the top of the inner wall of the cylinder body, the fixed connecting rod is connected with the top of the outer side of the cylinder body, the fixed connecting rod is connected with the anchor pile system, and the movable connecting rod is connected with the damper module;
the damper module comprises a damper main body and a first connecting rod, wherein the first connecting rod is positioned at two ends of the damper main body, one end of a guy cable is connected to the end part of the supporting rod, and the other end of the guy cable is connected to the first connecting rod; or alternatively, the first and second heat exchangers may be,
The support system further comprises a pulley, the pulley is located at one end of the support rod, one end of the inhaul cable is connected to the tower, the other end of the inhaul cable is connected to the damper module, and the middle of the inhaul cable is wound on the pulley.
2. A tower vibration dampening device as claimed in claim 1, wherein the support system further comprises an inclined strut, one end of the inclined strut being connected to a second connection block, the other end of the inclined strut being connected to the support bar.
3. A tower vibration damping device according to claim 1, wherein the damper body is a hydraulic damper or an electromagnetic damper.
4. A tower vibration damping device according to claim 1, wherein the anchor pile system comprises a second connecting rod and an anchor pile body, the second connecting rod being located at one end of the anchor pile body.
5. A tower provided with at least three tower vibration damping devices according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556815.2A CN109441730B (en) | 2018-12-19 | 2018-12-19 | Tower vibration damper and tower comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556815.2A CN109441730B (en) | 2018-12-19 | 2018-12-19 | Tower vibration damper and tower comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441730A CN109441730A (en) | 2019-03-08 |
| CN109441730B true CN109441730B (en) | 2024-08-13 |
Family
ID=65560364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811556815.2A Active CN109441730B (en) | 2018-12-19 | 2018-12-19 | Tower vibration damper and tower comprising same |
Country Status (1)
| Country | Link |
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| CN (1) | CN109441730B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952826A (en) * | 2019-11-15 | 2020-04-03 | 四川大学 | Stay cable type vibration and energy dissipation system for high-flexibility tower tube structure |
| CN111089252A (en) * | 2020-01-21 | 2020-05-01 | 同济大学 | Device for inhibiting wind-induced vibration of street lamp cap |
| 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 |
| CN114838078B (en) * | 2022-03-17 | 2024-02-06 | 北京工业大学 | An amplified damping transfer system for vibration control of wind turbines |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1079U1 (en) * | 1992-04-29 | 1995-11-16 | Шарлот Юрий Михайлович | Mast |
| CN106368343A (en) * | 2016-11-15 | 2017-02-01 | 湖南科技大学 | Sag damping cable |
| CN209724581U (en) * | 2018-12-19 | 2019-12-03 | 上海电气风电集团股份有限公司 | Tower vibration damping device and tower including same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488045B (en) * | 2018-04-09 | 2020-02-14 | 西北工业大学 | Damper for vibration reduction of fan tower |
-
2018
- 2018-12-19 CN CN201811556815.2A patent/CN109441730B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1079U1 (en) * | 1992-04-29 | 1995-11-16 | Шарлот Юрий Михайлович | Mast |
| CN106368343A (en) * | 2016-11-15 | 2017-02-01 | 湖南科技大学 | Sag damping cable |
| CN209724581U (en) * | 2018-12-19 | 2019-12-03 | 上海电气风电集团股份有限公司 | Tower vibration damping device and tower including same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441730A (en) | 2019-03-08 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200233 Caobao Road, Xuhui District, Shanghai, No. 115 Applicant after: Shanghai Electric Wind Power Group Co.,Ltd. Address before: 200233 Caobao Road, Xuhui District, Shanghai, No. 115 Applicant before: SHANGHAI ELECTRIC WIND POWER GROUP Co.,Ltd. |
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