CN111219296A - Device suitable for restraining vortex-induced vibration of wind turbine tower - Google Patents
Device suitable for restraining vortex-induced vibration of wind turbine tower Download PDFInfo
- Publication number
- CN111219296A CN111219296A CN202010289211.7A CN202010289211A CN111219296A CN 111219296 A CN111219296 A CN 111219296A CN 202010289211 A CN202010289211 A CN 202010289211A CN 111219296 A CN111219296 A CN 111219296A
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- square
- carrying frame
- wind turbine
- vortex
- tower
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- 230000000452 restraining effect Effects 0.000 title description 2
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 4
- 238000013016 damping Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
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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
-
- 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
- F03D80/80—Arrangement of components within nacelles or towers
- F03D80/88—Arrangement of components within nacelles or towers of mechanical components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a device suitable for inhibiting vortex-induced vibration of a wind turbine tower, which comprises a square carrying frame arranged in a square shell, wherein a mass block is arranged in the square carrying frame; the other outer lateral wall of the square carrying frame is connected with the other inner lateral wall of the square shell through the linear spring, and two ends of the linear spring are hinged to the other outer lateral wall of the square carrying frame and the other inner lateral wall of the square shell through the pin shaft respectively.
Description
Technical Field
The invention relates to a tower of a wind turbine, in particular to a vibration suppression device.
Background
With the continuous development of wind power generation technology, large wind turbines are more common. However, as the wind power is continuously increased in size, the high tower barrel can absorb energy carried in the wind, vortex-induced vibration is caused, and therefore the tower barrel is failed, and great economic loss is caused. At present, vortex-induced vibration of a tower of a wind turbine is weakened by mainly installing some turbulence devices to destroy a vortex structure or change a vortex-induced mode. However, with the turbulators installed, the resistance experienced by the tower is greatly increased, and the turbulators can cause other forms of vibration. Although the increase of the turbulence device has a plurality of defects, the change of the shape of the tower section can effectively inhibit the generation of vortex-induced vibration, and at present, the turbulence device which is commonly used at home and abroad is as follows: control post, spiral strake and radome fairing.
At present, large-scale wind power enterprises in China, such as Shanghai electrics and Oriental electrics, try to adopt vortex generators to inhibit vortex-induced vibration of a tower of a wind turbine, but the vortex generators can only inhibit first-order vortex vibration of a flexible tower in a low wind speed section, but cannot inhibit second-order vortex vibration of the flexible tower excited under the conditions of strong wind and strong wind. In addition, the control method of installing a damper in the tower of the wind turbine to reduce the structural vibration is also accepted by broad scholars. The damper can tune the natural vibration frequency to be close to the fundamental frequency of the main body structure, so that the vibration energy of the main body structure is absorbed and then is consumed through the damping unit.
Because the blades of the wind turbine periodically rotate, the mass distribution of the wind turbine is continuously changed, so the natural frequency of the wind turbine is also changed, and in addition, the frequency corresponding to the first-order and second-order vortex-induced vibration of the tower of the wind turbine excited by wind is difficult to determine. Therefore, in order to effectively suppress the vortex-induced vibration of the tower of the wind turbine, the suppressing mechanism must have a broadband vibration absorbing capability. The device aims at the vortex-induced vibration characteristic of the wind turbine tower, has the advantages of light weight and wide vibration absorption frequency band, and can effectively inhibit and weaken the vortex-induced vibration of the wind turbine tower.
Disclosure of Invention
The invention aims to provide a device suitable for inhibiting the vortex-induced vibration of a tower barrel of a wind turbine, which can effectively inhibit and weaken the vortex-induced vibration of the tower barrel of the wind turbine and provide reliable guarantee for large-scale development of the wind turbine.
The purpose of the invention is realized as follows: a device suitable for inhibiting the vortex-induced vibration of a wind turbine tower comprises a square carrying frame arranged in a square shell, a mass block is arranged in the square carrying frame, a pair of outer side walls of the square carrying frame is connected with a pair of inner side walls of the square shell through two conical springs, two ends of each conical spring are fixedly connected to the outer side wall of the square carrying frame and the inner side wall of the square shell respectively, and a damper connected with the outer side wall of the square carrying frame and the inner side wall of the square shell is arranged inside each conical spring; the other pair of outer side walls of the square carrying frame is connected with the other pair of inner side walls of the square shell through linear springs, and two ends of each linear spring are hinged to the other pair of outer side walls of the square carrying frame and the other pair of inner side walls of the square shell through pins respectively.
As a further limitation of the present invention, a linear bearing is fixedly connected to the bottom of the square carriage, the linear bearing is slidably disposed on a guide rail, the guide rail is fixed to the bottom surface of the square housing, and the moving direction of the linear bearing is the same as the axial direction of the conical spring.
As a further limitation of the present invention, a large tray is fixed on the inner side wall of the square housing, one end of the conical spring with a large diameter is connected to the large tray, a small tray is fixed on the outer side wall of the square frame, one end of the conical spring with a small diameter is connected to the small tray, and the large tray and the small tray are both arranged in pairs.
As a further limitation of the invention, hinged supports matched with the linear springs are arranged on the inner wall of the square shell and the outer wall of the square carrying frame, and two ends of each linear spring are hinged on the hinged supports through pin shafts.
As a further definition of the invention, the linear spring is fixed at both ends in a connecting element, which is articulated in the hinge seat by means of a pin.
The working mechanism of the invention is as follows: the device is arranged on the rotating platform in the middle of the tower of the wind turbine, when the direction of external incoming flow changes, the rotating platform is adjusted through the control mechanism, so that the conical spring in the device is perpendicular to the direction of the incoming flow, the mass of the vibrator is adjusted according to different wind speeds, when the external incoming flow excites the vortex-induced vibration of the tower of the wind turbine, the device can transmit the energy of the vibration of the tower to the vibrator and consume the energy through the damper, and the vortex-induced vibration of the tower of the wind turbine can be effectively inhibited.
The invention has the beneficial effects that: the device has the advantages of light weight and wide vibration absorption frequency band, the natural frequency of the wind turbine is constantly changed due to the working characteristics of the wind turbine, and the frequency of the first-order vortex-induced vibration and the second-order vortex-induced vibration of the tower drum of the wind turbine excited by wind is difficult to determine, so that the range of the vibration absorption frequency band of the suppression device is required to be large enough to suppress the vortex-induced vibration of the tower drum of the wind turbine; the nonlinear spring group has cubic nonlinearity, the vibration absorption frequency band range is wide, the mass of the vibrator can be changed, the vibration absorption range is greatly increased, and the vortex-induced vibration of the wind turbine tower cylinder under various wind speeds can be effectively inhibited.
Drawings
FIG. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic front view of the present invention without a housing.
FIG. 3 is a top view of the present invention installed in a tower of a wind turbine.
FIG. 4 is an elevation view of the present invention installed in a tower of a wind turbine.
The device comprises a shell 1, a large tray 2, a conical spring 3, a damper 4, a small tray 5, a carrier frame 6, a mass block 7, a pin shaft 8, a connecting part 9, a linear spring 10, a guide rail 11 and a linear bearing 12.
Detailed Description
As shown in fig. 1-4, a device suitable for suppressing wind turbine tower vortex-induced vibration includes a square carrying frame 6 disposed in a square housing 1, a mass block 7 is disposed in the square carrying frame 6, a pair of outer side walls of the square carrying frame 6 is connected with a pair of inner side walls of the square housing 1 through two conical springs 3, two ends of each conical spring 3 are respectively fixedly connected to the outer side wall of the square carrying frame 6 and the inner side wall of the square housing 1, a large tray 2 is fixed on the inner side wall of the square housing 1, one end of each conical spring 3 with a large diameter is connected to the large tray 2, a small tray 5 is fixed on the outer side wall of the square carrying frame 6, one end of each conical spring 3 with a small diameter is connected to the small tray 5, the large tray 2 and the small tray 5 are both disposed in pairs, and a damper 4 connecting the outer side wall of the square carrying frame 6 and the inner side wall of the square; the other pair of outer side walls of the square carrying frame 6 is connected with the other pair of inner side walls of the square shell 1 through a linear spring 10, two ends of the linear spring 10 are respectively hinged on the other pair of outer side walls of the square carrying frame 6, the other pair of inner side walls of the square shell 1 and the inner wall of the square shell 1 through a pin shaft 8, the outer wall of the square carrying frame 6 is provided with a hinged support matched with a linear spring 10, two ends of the linear spring 10 are hinged to the hinged support through a pin shaft 8, two ends of the linear spring 10 are fixed in a connecting part 9, the connecting part 9 is hinged to the hinged support through the pin shaft 8, the bottom of the square carrying frame 6 is fixedly connected with a linear bearing 12, the linear bearing 12 is slidably arranged on a guide rail 11, the guide rail 11 is fixed on the bottom surface of the square shell 1, the motion direction of the linear bearing 12 is the same as the axial direction of the conical spring 3, and the guide rail 11 is used for reducing friction force received by the carrying frame 6.
The device is arranged on the rotating platform in the middle of the tower of the wind turbine, when the direction of external incoming flow changes, the rotating platform is adjusted through the control mechanism, so that the conical spring 3 in the device is perpendicular to the direction of the incoming flow, the mass of the vibrator is adjusted according to different wind speeds, when the external incoming flow excites the vortex-induced vibration of the tower of the wind turbine, the device can transmit the energy of the vibration of the tower to the vibrator and consume the energy through the damper 4, and the vortex-induced vibration of the tower of the wind turbine can be effectively inhibited.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (5)
1. A device suitable for inhibiting vortex-induced vibration of a wind turbine tower is characterized by comprising a square carrying frame arranged in a square shell, wherein a mass block is arranged in the square carrying frame, a pair of outer side walls of the square carrying frame and a pair of inner side walls of the square shell are connected through two conical springs, two ends of each conical spring are fixedly connected to the outer side wall of the square carrying frame and the inner side wall of the square shell respectively, and a damper connected with the outer side wall of the square carrying frame and the inner side wall of the square shell is arranged in each conical spring; the other pair of outer side walls of the square carrying frame is connected with the other pair of inner side walls of the square shell through linear springs, and two ends of each linear spring are hinged to the other pair of outer side walls of the square carrying frame and the other pair of inner side walls of the square shell through pins respectively.
2. The device for suppressing the vortex-induced vibration of the tower of the wind turbine as claimed in claim 1, wherein the linear bearing is fixedly connected to the bottom of the square carrying frame, the linear bearing is slidably disposed on a guide rail, the guide rail is fixed to the bottom surface of the square housing, and the linear bearing moves in the same direction as the axial direction of the conical spring.
3. The device for suppressing the vortex-induced vibration of the wind turbine tower according to claim 1 or 2, wherein a large tray is fixed on the inner side wall of the square housing, the end with the large diameter of the conical spring is connected to the large tray, a small tray is fixed on the outer side wall of the square frame, the end with the small diameter of the conical spring is connected to the small tray, and the large tray and the small tray are arranged in pairs.
4. The device for suppressing the vortex-induced vibration of the tower of the wind turbine as claimed in claim 1 or 2, wherein the inner wall of the square housing and the outer wall of the square carrying frame are provided with hinged supports matched with linear springs, and two ends of each linear spring are hinged on the hinged supports through pin shafts.
5. Device for damping wind turbine tower vortex induced vibrations according to claim 4, characterised in that the linear spring is fixed at both ends in a coupling part, which is hinged in a hinge seat by means of a pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289211.7A CN111219296B (en) | 2020-04-14 | 2020-04-14 | Device suitable for restraining vortex-induced vibration of wind turbine tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289211.7A CN111219296B (en) | 2020-04-14 | 2020-04-14 | Device suitable for restraining vortex-induced vibration of wind turbine tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111219296A true CN111219296A (en) | 2020-06-02 |
| CN111219296B CN111219296B (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010289211.7A Active CN111219296B (en) | 2020-04-14 | 2020-04-14 | Device suitable for restraining vortex-induced vibration of wind turbine tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111219296B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080145222A1 (en) * | 2006-12-13 | 2008-06-19 | Vincent Schellings | Active tower damper |
| CN103452747A (en) * | 2012-05-31 | 2013-12-18 | 北京能高自动化技术股份有限公司 | Fan tower load shedding method based on damping devices |
| CN106774486A (en) * | 2016-12-08 | 2017-05-31 | 天津理工大学 | A kind of strong nonlinearity bump leveller of achievable variation rigidity |
| US20170307041A1 (en) * | 2014-10-09 | 2017-10-26 | Saint-Gobain Placo | Non-linear dynamic absorber and use thereof for acoustic insulation |
| CN108716521A (en) * | 2018-06-01 | 2018-10-30 | 中国人民解放军海军工程大学 | A kind of energy gathering apparatus based on nonlinear energy trap |
| US20190011260A1 (en) * | 2015-12-23 | 2019-01-10 | Safran | Mobile mass suspension system comprising means of connecting the mobile mass with optimised linearity |
| CN109780130A (en) * | 2019-02-28 | 2019-05-21 | 西安理工大学 | A kind of nonlinear energy trap shock-absorbing means for whole star vibration suppression |
| CN110715782A (en) * | 2019-10-15 | 2020-01-21 | 河海大学 | Vortex-induced vibration suppression experimental device based on nonlinear energy trap |
| CN110886808A (en) * | 2019-12-04 | 2020-03-17 | 上海大学 | Amplitude limiting type nonlinear energy trap vibration damper |
| CN110939673A (en) * | 2019-12-04 | 2020-03-31 | 上海大学 | Nonlinear vibration damper of coupling segmental rigidity |
-
2020
- 2020-04-14 CN CN202010289211.7A patent/CN111219296B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080145222A1 (en) * | 2006-12-13 | 2008-06-19 | Vincent Schellings | Active tower damper |
| CN103452747A (en) * | 2012-05-31 | 2013-12-18 | 北京能高自动化技术股份有限公司 | Fan tower load shedding method based on damping devices |
| US20170307041A1 (en) * | 2014-10-09 | 2017-10-26 | Saint-Gobain Placo | Non-linear dynamic absorber and use thereof for acoustic insulation |
| US20190011260A1 (en) * | 2015-12-23 | 2019-01-10 | Safran | Mobile mass suspension system comprising means of connecting the mobile mass with optimised linearity |
| CN106774486A (en) * | 2016-12-08 | 2017-05-31 | 天津理工大学 | A kind of strong nonlinearity bump leveller of achievable variation rigidity |
| CN108716521A (en) * | 2018-06-01 | 2018-10-30 | 中国人民解放军海军工程大学 | A kind of energy gathering apparatus based on nonlinear energy trap |
| CN109780130A (en) * | 2019-02-28 | 2019-05-21 | 西安理工大学 | A kind of nonlinear energy trap shock-absorbing means for whole star vibration suppression |
| CN110715782A (en) * | 2019-10-15 | 2020-01-21 | 河海大学 | Vortex-induced vibration suppression experimental device based on nonlinear energy trap |
| CN110886808A (en) * | 2019-12-04 | 2020-03-17 | 上海大学 | Amplitude limiting type nonlinear energy trap vibration damper |
| CN110939673A (en) * | 2019-12-04 | 2020-03-31 | 上海大学 | Nonlinear vibration damper of coupling segmental rigidity |
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| Publication number | Publication date |
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| CN111219296B (en) | 2021-12-17 |
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