CN202914618U - Tuned mass damper for increasing wind turbine generator system damping - Google Patents
Tuned mass damper for increasing wind turbine generator system damping Download PDFInfo
- Publication number
- CN202914618U CN202914618U CN2012203878565U CN201220387856U CN202914618U CN 202914618 U CN202914618 U CN 202914618U CN 2012203878565 U CN2012203878565 U CN 2012203878565U CN 201220387856 U CN201220387856 U CN 201220387856U CN 202914618 U CN202914618 U CN 202914618U
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- mass damper
- tuned mass
- mass
- damping
- generating set
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Abstract
The utility model discloses a tuned mass damper for increasing wind turbine generator system damping. The tuned mass damper is arranged at the tail of a machine frame of a wind generating set, oscillation frequency of the tuned mass damper is consistent with or similar to that of the machine frame through adjustment of inherent frequency of the tuned mass damper, phase angles are different during resonance of the machine frame and the tuned mass damper, and damping provided by the tuned mass damper is used for absorbing oscillation energy of blades. The tuned mass damper for increasing the wind turbine generator system damping can effectively protect a structure of a wind driven generator, eliminates the problem of frequent shut-down of the wind generating set, prolongs service life of the wind generating set, and simultaneously cannot influence generating efficiency of the wind generating set.
Description
Technical field
The utility model belongs to the engineering structure antivibration area, is specifically related to a kind of tuned mass damper for increasing the wind powered generator system damping, is mainly used in the damping of wind power generating set, also can be used in the engineerings such as bridge, tall building.
Background technique
For fixed pitch stall control type wind power generating set; be lower than-20 ℃ in ambient temperature; wind speed is above (approximately 16-25m/s) after the rated point; in the wind power generating set normal course of operation, irregular, uncertain blade transient vibration phenomenon can occur, i.e. shimmy in plane of rotation of blade; this vibration is dispersed sometimes; cause unit vibration to increase sharply, cause compressor emergency shutdown, affect the normal power generation of unit.Simultaneously, this vibration also is harmful to blade, and it can cause the trailing edge structural failure, cracks.
The vibration root of the shimmy direction of blade is because the aerodynamic force in stall when operation produces, and is to be become due to the negative value by pneumatic damping behind the blade stall.Static state, the dynamic air dynamic property of it and vane airfoil profile, the layout of blade (how much of blade distribute), the structural characteristicss of blade (structural damping) etc. are relevant; Its structural damping descended when next was composite material blade low temperature, caused at last total damping to descend.The major measure of head it off is exactly the damping that will increase system, falls this part energy by Damping work.
For this problem, using at present more method is to paste the stall bar at blade, changes the aerodynamic characteristic of blade by the stall bar, and then reduces the shimmy of blade.This way shimmy energy that can effectively dissipate, but it can reduce the generating efficiency of wind power generating set, reduces generated energy, and this is that the wind field owner is unacceptable.
Therefore, be necessary prior art is improved.Through preliminary search, do not find the Records identical or similar with technical solutions of the utility model.
The model utility content
Cause system damping to descend for existing wind generator set blade stall and cause vibration, and the method at blade subsides speed per hour bar that adopts now can reduce the technological deficiency that generating efficiency reduces generated energy, the utility model proposes a kind of tuned mass damper for increasing the wind powered generator system damping, that the utility model damper has is rational in infrastructure, damping increasement successful, advantage easy to maintenance.
The technical solution adopted in the utility model is:
For increasing the tuned mass damper of wind power generating set system damping, comprise bearing support structure, guidance system, mass system, stiffness system and damped system, described bearing support structure is fixed on the frame of wind power generating set; Described guidance system is fixed on the described bearing support structure, and described mass system places on the described guidance system, and mass system is moved along guidance system; Described stiffness system is fixed on the described bearing support structure, and stiffness system is connected with mass system, for whole tuned mass damper provides rigidity; Described damped system is fixed on the described bearing support structure, and damped system is connected with mass system, for whole tuned mass damper provides damping.
The working principle of above-mentioned tuned mass damper is: when wind power generating set begins to vibrate, described tuned mass damper resonates with it, its natural frequency is consistent or close with the shimmy frequency of fan engine room, mass system is reciprocating along guidance system, thereby drive stiffness system and damped system to-and-fro motion, stiffness system and damped system are worked simultaneously and are absorbed the energy that deploys of fan engine room.
Further, described guidance system is linear guide pairs.
Further, described bearing support structure is provided with limit stoper, is used for the displacement of restriction mass system.
Further, described mass system comprises mass block pedestal, quality of regulation piece and pinboard, described mass block pedestal is used for placing mass block, and described quality of regulation piece is used for regulating the natural frequency of tuned mass damper, and described pinboard is used for connecting described stiffness system and damped system.
Further, described stiffness system is the steel spring system, and two steel springs form one group of steel spring system by the link end-to-end, and the steel spring system connects described mass system by this link.
Further, described damped system is hydraulic damping system or frictional damping system, and the one end is fixed on the described bearing support structure, and the other end connects described mass system.
Further, described stiffness system and damped system are integrated, for possessing simultaneously the elastic caoutchouc of rigidity and damping characteristic, this elastic caoutchouc one end is directly on described bearing support structure, the other end quality of connection block system, fan engine room occur when shimmy, directly to-and-fro motion on guidance system of mass system, move back and forth thereby drive elastic caoutchouc, utilize the rigidity of elastic caoutchouc and the shimmy energy that damping characteristic absorbs fan engine room.
The utility model has the advantage of: 1, by the tuned mass damper of a plurality of different frequencies is set, can suppress the vibration of a plurality of frequencies of wind power generating set, control range is wider, and efficient is higher; 2, the utility model is for increasing the tuned mass damper of wind power generating set damping, be provided with guidance system at the bearing support framework, define the movement locus of mass system, so that the structure of whole tuned mass damper is highly stable, and establishment the mass system negative effect of moving in the horizontal direction and bringing; 3, use steel spring as stiffness system, use hydraulic damper or frcition damper as damped system, so that whole tuned damper has outstanding rigidity and damping characteristic, can effectively increase the system damping of wind power generating set, and can effectively absorb shimmy energy; 4, stiffness system and damped system both can independently arrange, realized respectively by steel spring and hydraulic pressure (perhaps friction) damper, also can unite two into one, realized separately by the elastic caoutchouc that has simultaneously rigidity and damping characteristic, multiple implementation is arranged, be convenient to the producer and adopt flexibly.
Description of drawings
Fig. 1 is the mounting arrangements schematic representation (three-face view) of the tuned mass damper for increasing the wind power generating set system damping described in the utility model;
Fig. 2 is the structural representation (three-face view) of the utility model embodiment 1 described tuned mass damper;
Fig. 3 is the structure plan view of the utility model embodiment 1 described tuned mass damper;
Fig. 4 is the structural representation of the utility model embodiment 1 described steel spring;
Fig. 5 is the structural representation (three-face view) of the utility model embodiment 1 described guidance system;
Fig. 6 is the structural representation (three-face view) of the utility model embodiment 2 described tuned mass dampers;
Fig. 7 is the structure plan view of the utility model embodiment 2 described tuned mass dampers.
Embodiment
Be to reach the technological means that predetermined model utility purpose is taked for further setting forth the utility model; below in conjunction with drawings and Examples; a kind of for increasing the method for wind powered generator system damping and the embodiment of tuned mass damper to what the utility model proposes; step; structure; feature is elaborated; should be understood that; owing to the length reason; this paper does not carry out exhaustive to all embodiments of the utility model; following examples only are preferred embodiments of the present utility model, but protection domain of the present utility model is not limited to following preferred embodiment.
As shown in Figure 1; at frame of wind-driven generator group 4 afterbodys tuned mass damper 3 is set; be fixed on rear side on the frame 4 by locking device 2; place generator 1 bottom by regulating the natural frequency of tuned mass damper 3; make its shimmy frequency with cabin frame 4 consistent or close; the phase angle was different when cabin frame 4 resonated from this tuned mass damper 3; the damping that utilizes this tuned mass damper 3 to provide absorbs the shimmy energy of blade; can effectively protect like this structure of wind-driven generator; eliminate the problem of wind power generating set frequent shutdown; improve the working life of wind power generating set, can the generating efficiency of wind power generating set not exerted an influence simultaneously.
Be used for strengthening the tuned mass damper of wind power generating set system damping, comprise bearing support structure, guidance system, mass system, stiffness system and damped system, described bearing support structure is fixed on the frame of wind power generating set; Described guidance system is fixed on the described bearing support structure, and described mass system places on the described guidance system, and mass system is moved along guidance system; Described stiffness system is fixed on the described bearing support structure, and stiffness system is connected with mass system, for whole tuned mass damper provides rigidity; Described damped system is fixed on the described bearing support structure, and damped system is connected with mass system, for whole tuned mass damper provides damping.
Further, the natural frequency of described tuned mass damper is to regulate by the quality of the quality system that changes tuned mass damper or the rigidity property of stiffness system, to adapt to different wind power generating set.
Further, described many tuned mass dampers adopt the arrangement of stack from top to bottom.
The working principle of above-mentioned tuned mass damper is: when wind power generating set begins to vibrate, described tuned mass damper resonates with it, its natural frequency is consistent or close with the shimmy frequency of fan engine room, mass system is reciprocating along guidance system, thereby drive stiffness system and damped system to-and-fro motion, stiffness system and damped system are worked simultaneously and are absorbed the energy that deploys of fan engine room.
Embodiment 1:
As shown in Figure 2, described tuned mass damper comprises: bearing support structure 40, linear guide pairs 30, mass block 10, hydraulic damping system 50 and steel spring system 20.
As shown in Figure 3, wherein, described bearing support structure 40 comprises: dunnage 41, locking device 42, mounting screw 43, position limitation protection 44;
Described hydraulic damping system 50 comprises: hydraulic damper 51, fixing pin 52;
Described mass system 10 comprises: mass block pedestal 11, spring pinboard 12, screw rod 13, quality of regulation piece 14;
Described steel spring system 20 comprises: steel spring 21, mounting nuts 22, fixed plate 23, construction bolt 24, connecting plate 25.Wherein, as shown in Figure 4, steel spring 21 is comprised of spring 211 and screwed joint 212.The screwed joint 212 of two steel springs 21 screws in mounting nuts 22 by connecting plate 25, is connected to become one group of steel spring system 20, and in the present embodiment, a tuned mass damper comprises two groups of steel spring systems 20;
As shown in Figure 5, described linear guide pairs 30 comprises: guide rail 32, slide block 31, mounting screw 33, described slide block 31 slides at described guide rail 32.
Concrete annexation between these routine each parts of described tuned mass damper is:
1, dunnage 41 is fixed on the frame of wind-driven generator group by locking device 42 and mounting screw 43; Position limitation protection 44 is for the block system 10 back and forth operation in safety travel of ensuring the quality of products;
2, guide rail 32 is fixed on the dunnage 41 by mounting screw 33, and slide block 31 is connected with mass block pedestal 11;
3, steel spring system 20 is fixed on the spring pinboard 12 by connecting plate 25; Steel spring system 20 is fixed on the dunnage 41 by fixed plate 23 and construction bolt 24.
4, hydraulic damper (51) is fixed on the dunnage 41 by fixing pin 52, one ends, and an end is fixed on the mass block pedestal 11;
5, quality of regulation piece 14 directly overlays on mass block pedestal 11 and the spring pinboard 12, and links together with screw rod 13.
Embodiment 1 working principle is: described tuned mass damper is fixed on the frame of wind-driven generator group afterbody by bearing support structure 40, its natural frequency is consistent or close with the shimmy frequency of frame, during the frame vibration-generating, mass system 10 to-and-fro motion on linear guide pairs 30, move back and forth thereby drive steel spring 21 and hydraulic damper 51, utilize the damping characteristic of the rigidity of steel spring 21 and hydraulic damper 51 to absorb the shimmy energy of fan engine room.
Embodiment 2:
As shown in Figure 6, tuned mass damper comprises bearing support structure 40, linear guide pairs 30, mass system 10, elastic caoutchouc 20;
As shown in Figure 7, described bearing support structure 40 comprises: dunnage 41, locking device 42, mounting screw 43, position limitation protection 44;
Described linear guide pairs 30 comprises: guide rail 32, slide block 31, mounting screw 33;
Described mass system 10 comprises: mass block pedestal 11, pinboard 12, screw rod 13, quality of regulation piece 14, mounting screw 15;
The concrete connection of these routine described each parts of tuned mass damper is:
1, dunnage 41 is fixed on the frame by locking device 42, and position limitation protection 44 is for the block system 10 back and forth operation in safety travel of ensuring the quality of products.
2, guide rail 31 is fixed on the dunnage 41 by mounting screw 33, and slide block 31 is connected with mass block pedestal 11;
3, elastic caoutchouc 20 is fixed on the dunnage 41 by mounting screw 15, and pinboard 12 connects respectively elastic caoutchouc 20 and quality of regulation piece 14 by mounting screw 15;
4, quality of regulation piece 14 directly overlays on the mass block pedestal 11, and links together with screw rod 13.
Embodiment 2 working principle is: be fixed on the wind generating set engine room afterbody by support system 40, its natural frequency is consistent or close with the shimmy frequency of fan engine room, and frame occurs when shimmy, and tuned mass damper and frame resonate; Mass system 10 to-and-fro motion on linear guide pairs 30 moves back and forth thereby drive elastic caoutchouc 20; Utilize the shimmy energy of the damping absorption fan engine room of rubber pad 20.
Above-described embodiment only is preferred embodiment of the present utility model; those of ordinary skills are not breaking away from distortion and the retouching of doing under the enlightenment of the utility model essence and technology; all should be considered as within protection domain of the present utility model, protection domain of the present utility model is defined by claims and equivalent thereof.
Claims (7)
1. for increasing the tuned mass damper of wind power generating set system damping, it is characterized in that, comprise bearing support structure, guidance system, mass system, stiffness system and damped system, described bearing support structure is fixed on the frame of wind power generating set; Described guidance system is fixed on the described bearing support structure, and described mass system places on the described guidance system, and mass system is moved along guidance system; Described stiffness system is fixed on the described bearing support structure, and stiffness system is connected with mass system, for whole tuned mass damper provides rigidity; Described damped system is fixed on the described bearing support structure, and damped system is connected with mass system, for whole tuned mass damper provides damping.
2. described tuned mass damper for increasing the wind power generating set system damping according to claim 1, it is characterized in that the natural frequency of described tuned mass damper is to regulate by the quality of the quality system that changes tuned mass damper or the rigidity property of stiffness system.
3. described tuned mass damper for increasing the wind power generating set system damping according to claim 1 is characterized in that described guidance system is linear guide pairs; Described bearing support structure is provided with limit stoper, is used for the displacement of restriction mass system.
4. described tuned mass damper for increasing the wind power generating set system damping according to claim 1, it is characterized in that, described mass system comprises mass block pedestal, quality of regulation piece and pinboard, described mass block pedestal is used for placing mass block, described quality of regulation piece is used for regulating the natural frequency of tuned mass damper, and described pinboard is used for connecting described stiffness system and damped system.
5. described tuned mass damper for increasing the wind power generating set system damping according to claim 4, it is characterized in that, described stiffness system is the steel spring system, two steel springs form one group of steel spring system by the link end-to-end, and the steel spring system connects described mass system by this link.
6. described tuned mass damper for increasing the wind power generating set system damping according to claim 4, it is characterized in that, described damped system is hydraulic damping system or frictional damping system, and the one end is fixed on the described bearing support structure, and the other end connects described mass system.
7. described tuned mass damper for increasing the wind power generating set system damping according to claim 1, it is characterized in that, described stiffness system and damped system are integrated, for possessing simultaneously the elastic caoutchouc of rigidity and damping characteristic, this elastic caoutchouc one end is directly on described bearing support structure, the other end quality of connection block system, fan engine room occurs when shimmy, directly to-and-fro motion on guidance system of mass system, move back and forth thereby drive elastic caoutchouc, utilize the rigidity of elastic caoutchouc and the shimmy energy that damping characteristic absorbs fan engine room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203878565U CN202914618U (en) | 2012-08-07 | 2012-08-07 | Tuned mass damper for increasing wind turbine generator system damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203878565U CN202914618U (en) | 2012-08-07 | 2012-08-07 | Tuned mass damper for increasing wind turbine generator system damping |
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| Publication Number | Publication Date |
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| CN202914618U true CN202914618U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203878565U Expired - Lifetime CN202914618U (en) | 2012-08-07 | 2012-08-07 | Tuned mass damper for increasing wind turbine generator system damping |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840269A (en) * | 2012-08-07 | 2012-12-26 | 株洲时代新材料科技股份有限公司 | Method used for increasing wind generating set system damping and tuning quality damper |
| CN110912062A (en) * | 2019-11-30 | 2020-03-24 | 国网福建省电力有限公司 | Vibration damper for preventing transmission line from vibrating substantially |
| EP3974649A1 (en) * | 2020-09-25 | 2022-03-30 | Siemens Gamesa Renewable Energy A/S | Use of a tuned mass damper in a nacelle for a wind turbine |
-
2012
- 2012-08-07 CN CN2012203878565U patent/CN202914618U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840269A (en) * | 2012-08-07 | 2012-12-26 | 株洲时代新材料科技股份有限公司 | Method used for increasing wind generating set system damping and tuning quality damper |
| CN102840269B (en) * | 2012-08-07 | 2015-03-18 | 株洲时代新材料科技股份有限公司 | Method used for increasing wind generating set system damping and tuning quality damper |
| CN110912062A (en) * | 2019-11-30 | 2020-03-24 | 国网福建省电力有限公司 | Vibration damper for preventing transmission line from vibrating substantially |
| EP3974649A1 (en) * | 2020-09-25 | 2022-03-30 | Siemens Gamesa Renewable Energy A/S | Use of a tuned mass damper in a nacelle for a wind turbine |
| WO2022063872A1 (en) * | 2020-09-25 | 2022-03-31 | Siemens Gamesa Renewable Energy A/S | Use of a tuned mass damper in a nacelle for a wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |