CN117469087A - Vibration damping system of wind generating set - Google Patents
Vibration damping system of wind generating set Download PDFInfo
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- CN117469087A CN117469087A CN202311454414.7A CN202311454414A CN117469087A CN 117469087 A CN117469087 A CN 117469087A CN 202311454414 A CN202311454414 A CN 202311454414A CN 117469087 A CN117469087 A CN 117469087A
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- 238000013016 damping Methods 0.000 title claims abstract description 53
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 230000035939 shock Effects 0.000 claims description 22
- 239000006096 absorbing agent Substances 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 8
- 230000001629 suppression Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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 vibration damping system of a wind generating set, which belongs to the field of wind generating set damping, and comprises an acquisition module, a processing module and an adjustable damping unit; the acquisition module is used for acquiring adjusting signals generated by the yaw system and the pitch system and integrating the adjusting signals into adjusting signals; the processing module is used for generating a damping control signal according to the wind change signal and sending the damping control signal to a hydraulic station of the wind generating set; the hydraulic station drives the hydraulic part to adjust the adjustable damping unit. According to the invention, the vibration suppression capability of the vibration reduction unit in a certain direction is regulated, so that the vibration reduction capability of the wind generating set is maintained when the wind direction and the wind power change to operate, the vibration increase of the wind generating set is avoided, and the yaw system and the pitch system of the wind generating set can still operate stably in the operation process.
Description
Technical Field
The invention belongs to the field of vibration reduction of wind generating sets, and particularly relates to a vibration reduction system of a wind generating set.
Background
The wind driven generator is an electric power device which converts wind energy into mechanical work and drives a rotor to rotate and finally outputs alternating current. The wind driven generator generally comprises wind wheels, a generator (comprising a device), a direction regulator (tail wing), a tower, a speed limiting safety mechanism, an energy storage device and the like.
Because wind generating set needs to generate electricity in windward, mechanical motion produces vibration and the like caused by wind power in the operation process, and the generating efficiency of the wind generating set is influenced due to the existence of the vibration, and meanwhile, the service life of each component in the wind generating set is also influenced, so that the wind generating set needs to be reasonably damped.
Chinese patent document CN112128060a describes a damper mechanism for connecting a wind generating set, comprising a housing, a blade connector and blades, wherein the front end of the housing is provided with the blade connector, one side of the blade connector is provided with the blades, the other side of the blade connector is provided with a rotary connector, and the rotary connector is arranged at the center of the blade connector; the electric generator is connected with the gear box through a connecting bearing, a brake is arranged on one side of the gear box and sleeved on the connecting bearing, a transmission rod is arranged on the other side of the gear box, and the transmission rod is connected with the rotary joint; the damage to the whole machine parts caused by vibration generated by wind power and mechanical operation can be effectively reduced.
The device can realize damping of the wind generating set basically as a whole, but the lack of the response of different vibrations generated by changing the wind direction of the wind power, namely, when the yaw system and the pitch system operate due to the change of the wind direction and the wind power, different vibrations can be generated from those generated when the wind generating set operates normally, and the damping effect is reduced due to the fact that the vibrations are possibly not matched with the damping capacity of the original damping device on the vibrations.
Disclosure of Invention
The invention aims to provide a vibration damping system of a wind generating set, which solves the problem that the damping capacity of a damping device on the wind generating set is weakened when the wind direction and the wind change operation.
In order to achieve the above object, the technical scheme of the present invention is as follows: a vibration damping system of a wind generating set comprises an acquisition module, a processing module and an adjustable damping unit;
the acquisition module is used for acquiring adjusting signals generated by the yaw system and the pitch system and integrating the adjusting signals into adjusting signals;
the processing module is used for generating a damping control signal according to the wind change signal and sending the damping control signal to a hydraulic station of the wind generating set;
the adjustable damping unit comprises a bearing plate arranged between a base of a yaw system and the bottom of a wind driven generator cabin, an upper fixing ring is fixedly connected to the bottom of the bearing plate, a connecting groove is formed in the upper fixing ring, a plurality of movable rings are arranged below the upper fixing ring, movable grooves are formed in the movable rings, movable flanges are arranged at the tops of the movable rings, the movable flanges of the uppermost movable rings extend into the connecting groove, the movable flanges of the other movable rings extend into the movable grooves of the adjacent movable rings, a plurality of dampers are arranged between the movable flanges and the movable grooves and the connecting groove, the bottom of the lowermost movable ring is fixedly connected with a lower fixing ring, the axes of the lower fixing ring and the movable rings are coincident with the axis of the tower of the wind driven generator, a plurality of circumferentially uniformly distributed hydraulic parts are fixedly connected to the tower side walls of the wind driven generator corresponding to each movable ring, oil ways of the hydraulic parts are communicated with a hydraulic station of the wind driven generator, an output shaft of the hydraulic parts extends into the tower of the wind driven generator, and an adjusting block is fixedly connected to the output shaft of the hydraulic parts.
The technical principle of the scheme is as follows:
the wind load information received by the wind generating set is obtained by acquiring the adjusting signals generated by the yaw system and the pitch system, including wind direction, wind speed, angles required to be adjusted by the wind generating set and the like, and in the adjusting process of the yaw system and the pitch system, the wind generating set generates larger vibration compared with the conventional operation, and the vibration can be transmitted to the adjustable damping unit through the base of the yaw system.
The regulating block does not contact with the movable ring under the conventional state, the damper between the movable ring and the movable ring is used for damping vibration generated by the wind generating set, meanwhile, a plurality of movable rings can play a role in wind damping, when wind direction and wind force change, the yaw system and the pitch system operate, the wind generating set is subjected to wind load increase in a certain direction, the amplitude of vibration of the wind generating set is increased, thereby stronger vibration is generated, the hydraulic part is driven to operate through the hydraulic station, the regulating block extrudes the movable ring, the movable ring deflects towards the wind load direction, the damper at the extruded side is in an extrusion state, the vibration inhibition capability in the wind direction is enhanced, the movable rings of different numbers can deflect according to the amplitude of vibration, so that vibration of the wind generating set in different sizes is inhibited, and after the operation of the yaw system and the pitch system is completed, the regulating block stops extruding the movable ring.
The adoption of the scheme has the following beneficial effects:
1. according to the scheme, before the yaw system and the pitch system operate, the adjusting signals generated by the yaw system and the pitch system are acquired, the corresponding movable rings are adjusted to deflect towards the corresponding directions, and the vibration suppression capability of the adjustable vibration reduction unit on a certain direction is enhanced, so that the vibration reduction capability of the wind generating set is maintained when the wind direction and the wind power change to operate, the vibration increase of the wind generating set is avoided, and the yaw system and the pitch system of the wind generating set can still operate stably in the operation process.
2. According to the scheme, the damping capacity of the adjustable damping unit can be flexibly enhanced according to wind power and wind directions by adjusting the offset of the movable rings and the number of the offset movable rings, and damping and rigidity can be adjusted according to the operation characteristics of a yaw system and a pitch system and the vibration frequency and the vibration amplitude, so that the optimal damping effect is achieved.
3. According to the scheme, when the wind generating set is operated normally, and the wind generating set is subjected to wind load action to generate normal vibration, resistance is generated between the movable rings in a cooperative mode, and vibration of the wind generating set during normal operation is hindered through resistance generated by relative movement between air and each movable ring.
Further, the adjusting signals comprise the current wind generating set direction, the adjusted wind generating set direction, the current wind generating set blade angle, the adjusted wind generating set blade angle, the wind direction and the wind power;
the processing module is used for combining the wind direction according to the current wind generating set direction and the adjusted wind generating set direction to obtain a hydraulic part to be operated; and combining and separating according to the blade angle of the current wind generating set and the blade angle of the wind generating set after adjustment to obtain the output quantity of the hydraulic part to be operated.
The beneficial effects are that: the processing module can acquire hydraulic parts to be operated, output quantity of the hydraulic parts and maintenance time after the hydraulic parts are output by combining with the adjustment information of the wind power, wind direction and wind power generator set, and can adjust the output quantity of the hydraulic parts along with the braking process of the yaw system, so that the yaw system and the pitch system can accurately absorb shock in the whole operation process of the wind power generator set.
Furthermore, the acquisition module is also used for acquiring the wind direction and the wind power around the wind driven generator in real time and correcting the wind direction and the wind power acquired from the yaw system and the pitch system in real time.
The beneficial effects are that: according to the wind direction and wind power around the wind driven generator which are independently collected, the wind direction and wind power which are originally collected are corrected in real time, and the accuracy of damping the wind driven generator set can be further improved.
Further, connecting plates are uniformly distributed in the movable groove in the circumferential direction, shock absorbers are hinged to the two ends and the center of each connecting plate, one end of each shock absorber principle connecting plate is hinged to the side wall of the movable flange, and the axes of the shock absorbers at the two ends of each connecting plate are tangential to the movable flange.
The beneficial effects are that: the shock absorber at the center of the connecting plate plays a main role in damping, the shock absorbers at the two ends of the connecting plate play a role in auxiliary damping, and the damping effect is improved.
Further, the upper surface and the lower surface of the movable groove are respectively provided with a rubber ring, and the rubber rings on the upper surface and the lower surface of the movable groove are respectively propped against the movable flange.
The beneficial effects are that: and the stability of the movable ring in the damping process is improved.
Further, all fixed connection in wind generating set's pylon lateral wall of hydraulic part, and wind generating set's pylon lateral wall fixedly connected with protection casing, hydraulic part cover are located in the protection casing, and the storage tank has all been seted up to wind generating set's pylon inside wall of hydraulic part output shaft department, regulating block and storage tank sliding fit.
The beneficial effects are that: the adjusting block is retracted into the accommodating groove when the hydraulic part does not run, so that contact friction between the adjusting block and the movable ring during shock absorption in the conventional running process is avoided.
Further, the first connecting hole and the second connecting hole have been seted up to the loading board, and the cover is equipped with shock attenuation bush in the second connecting hole, and the loading board passes through first connecting hole fixed connection with yaw system's base, and loading board passes through second connecting hole fixed connection with the aerogenerator cabin bottom.
The beneficial effects are that: vibration that base and wind power generation cabin bottom received of yaw system is reduced through the shock attenuation bush.
Further, the number and the positions of the hydraulic parts are in one-to-one correspondence with the connecting plates, and the axis of the output shaft of the hydraulic part passes through the center of the connecting plates.
The beneficial effects are that: when the hydraulic part is operated, the arrangement part of the shock absorber can be accurately extruded, so that the movable ring is accurately offset.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a vibration damping system for a wind turbine of the present invention;
FIG. 2 is an enlarged schematic view of part A of an embodiment of a vibration damping system of a wind turbine generator system according to the present invention;
FIG. 3 is a front cross-sectional view of a moving ring of an embodiment of a vibration absorbing system of a wind turbine of the present invention;
FIG. 4 is a top cross-sectional view of a loose ring of an embodiment of a vibration damping system of a wind turbine according to the present invention;
FIG. 5 is a cross-sectional view of a vibration damping bushing of an embodiment of a vibration damping system of a wind turbine of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the wind generating set 1, the yaw system 2, the processing module 3, the pitch system 4, the bearing plate 5, the protective cover 6, the hydraulic part 7, the adjusting block 8, the lower fixed ring 9, the movable ring 10, the containing groove 11, the upper fixed ring 12, the movable groove 13, the shock absorber 14, the movable flange 15, the connecting groove 16, the connecting plate 17, the rubber outer sleeve 18 and the metal inner sleeve 19.
Example 1
As shown in fig. 1-5: a vibration damping system of a wind generating set 1 comprises an acquisition module, a processing module 3 and an adjustable damping unit.
The acquisition module is used for acquiring the adjusting signals generated by the yaw system 2 and the pitch system 4 and integrating the adjusting signals into adjusting signals; the pitch system 4 is self-contained in the wind generating set 1 and is used for controlling and changing the pitch angle of the fan blades so that the wind generating set 1 obtains optimal power; the pitch system 4 is also self-contained in the wind generating set 1, and keeps the cabin consistent with the wind direction by adjusting the angle of the cabin, so that the wind generating set can acquire as much wind energy as possible; the direction of the current wind generating set 1, the direction of the wind generating set 1 after adjustment, the angle of the blades of the current wind generating set 1, the angle of the blades of the wind generating set 1 after adjustment, the wind direction and the wind power can be obtained through the adjusting signals generated by the yaw system 2 and the pitch system 4.
The processing module 3 is used for generating a damping control signal according to the wind change signal and sending the damping control signal to a hydraulic station of the wind generating set 1; the processing module 3 in the embodiment is a processor, which can be installed in a control cabinet of the wind generating set 1; the processing module 3 specifically acquires a hydraulic part 7 to be operated according to the current direction of the wind generating set 1 and the direction of the wind generating set 1 after adjustment in combination with the wind direction; and according to the combination and separation of the blade angle of the current wind generating set 1 and the blade angle of the wind generating set 1 after adjustment, obtaining the output quantity of the hydraulic part 7 to be operated.
Secondly, the processing module 3 also adjusts the damping control signal in real time according to the braking time point and the braking force of the yaw system 2 to adapt to different allowable states of the yaw system 2.
The adjustable damping unit comprises a bearing plate 5 arranged between a base of the yaw system 2 and the bottom of the wind driven generator cabin, wherein a first connecting hole and a second connecting hole are formed in the bearing plate 5, a damping bushing is sleeved in the second connecting hole, the bearing plate 5 is fixedly connected with the base of the yaw system 2 through the first connecting hole, and the bearing plate 5 is fixedly connected with the bottom of the wind driven generator cabin through the second connecting hole.
The damping bush specifically comprises a rubber outer sleeve 18 and a metal inner sleeve 19, wherein the metal inner sleeve 19 is sleeved in the rubber outer sleeve 18, bolts directly penetrate through the first connecting holes to be connected and fixed when the carrier plate is connected with the base of the yaw system 2, and the bolts penetrate through the metal inner sleeve 19 of the damping bush to be connected and fixed when the carrier plate 5 is connected with the bottom of the wind power generator cabin.
The bottom of the bearing plate 5 is fixedly connected with an upper fixing ring 12, a connecting groove 16 is formed in the upper fixing ring 12, four movable rings 10 are arranged below the upper fixing ring 12, movable grooves 13 are formed in the movable rings 10, movable flanges 15 are arranged at the tops of the movable rings 10, the movable flanges 15 of the uppermost movable ring 10 extend into the connecting groove 16, the movable flanges 15 of the rest movable rings 10 extend into the movable grooves 13 of the adjacent movable rings 10, and the movable flanges 15 can transversely and longitudinally move in the connecting groove 16 and the movable grooves 13.
And all be provided with a plurality of shock absorbers 14 between activity flange 15 and activity groove 13 and the spread groove 16, the fixed ring 9 is down fixedly connected with in the bottom of the activity ring 10 of below, the fixed ring 9 is down fixed with the pylon inside wall fixed connection of wind generating set 1, go up fixed ring 12, the axis of fixed ring 9 and activity ring 10 down all coincides with the pylon axis of wind generating set 1, and go up fixed ring 12 and the fixed ring 9 diameter down and be greater than the activity ring 10 diameter, the diameter of activity ring 10 is the same and all is less than the internal diameter of pylon, make there is certain clearance between activity ring 10 and the pylon inner wall.
The tower side wall of the wind generating set 1 corresponding to each movable ring 10 is fixedly connected with a plurality of circumferentially uniformly distributed hydraulic components 7, the hydraulic components 7 of the embodiment are hydraulic cylinders, oil ways of the hydraulic components 7 are communicated with a hydraulic station of the wind generating set 1, an output shaft of the hydraulic component 7 extends into the tower of the wind generating set 1, and an output shaft of the hydraulic component 7 is fixedly connected with an adjusting block 8.
Specifically, hydraulic part 7 all is through bolt fixed connection in wind generating set 1's pylon lateral wall, and wind generating set 1's pylon lateral wall fixedly connected with protection casing 6, and hydraulic part 7 covers and locates in the protection casing 6, and accommodating groove 11 has all been seted up to wind generating set 1's pylon inside wall of hydraulic part 7 output shaft department, regulating block 8 and accommodating groove 11 sliding fit.
And secondly, the acquisition module is also used for acquiring the wind direction and the wind power around the wind driven generator in real time and correcting the wind direction and the wind power acquired from the yaw system 2 and the pitch system 4 in real time. The accuracy of damping adjustment is improved, and wind direction and wind force can be obtained through a wind measuring device of the wind driven generator.
The specific implementation process is as follows: in a normal state, vibration generated by the wind generating set 1 is transmitted to the adjustable vibration reduction unit through the bearing plate 5, the vibration is transmitted between the movable rings 10, the vibration is restrained by the shock absorber 14, so that the purpose of basic shock absorption is achieved, meanwhile, the movable rings 10 can serve as mass blocks of wind dampers, the vibration amplitude of the wind generating set 1 under external excitation such as earthquake, strong wind and the like can be reduced, and the vibration response of a structure is reduced.
When the yaw system 2 and the pitch system 4 are operating, damping control signals are generated, comprising the hydraulic part 7 to be operated and the corresponding duration of the hydraulic part 7. For example, when the wind direction is changed from the eastern direction to the southeast direction, the direction of the wind power generator set 1 needs to be adjusted to be 25 °, the required adjustment time is 30s, and the wind power is weak, then 1-2 movable rings 10 need to be offset, the offset direction is between the eastern direction and the southeast direction, and the duration of the offset is 30s, so that the hydraulic station in the wind power generator set 1 drives the corresponding hydraulic part 7 to operate through an oil circuit, the movable rings 10 are offset between the eastern direction and the southeast direction, and the required offset amount is small due to the weak wind power, and the movable rings 10 are slightly extruded by the adjusting block 8.
At this time, the vibration suppression capability of the adjustable vibration reduction unit to the wind direction is enhanced, the generation of vibration is reduced, in the process of running braking of the yaw system 2, the acquisition module acquires the braking force of the yaw system 2, the required vibration suppression capability is weakened along with the increase of the braking force, and correspondingly, the hydraulic station reduces the extrusion of the hydraulic part 7 to the movable ring 10 through the oil path to gradually reset the movable ring 10 along with the braking of the yaw system 2.
Example 2
The difference with embodiment 1 is that the movable groove 13 is circumferentially and uniformly provided with the connecting plates 17, the two ends and the center of the connecting plates 17 are hinged with the shock absorbers 14, the shock absorbers 14 principle is that one end of each connecting plate 17 is hinged with the side wall of the movable flange 15, and the axes of the shock absorbers 14 at the two ends of the connecting plates 17 are tangential to the movable flange 15. The number and the positions of the hydraulic parts 7 are in one-to-one correspondence with the connecting plates 17, and the axis of the output shaft of the hydraulic part 7 passes through the center of the connecting plates 17.
When the hydraulic part 7 is operated, the hydraulic part 7 can accurately press the position of the connecting plate 17, so that the shock absorber 14 at the corresponding position is pressed, and the shock absorber 14 in the required direction can be accurately enhanced in the vibration suppressing capability.
In order to stably shift the movable ring 10 in the shifting process, rubber rings are arranged on the upper surface and the lower surface of the movable groove 13, and the rubber rings on the upper surface and the lower surface of the movable groove 13 are propped against the movable flange 15.
The foregoing is merely exemplary of the present invention and the specific structures and/or characteristics of the present invention that are well known in the art have not been described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. The utility model provides a vibration damping system of wind generating set which characterized in that: the device comprises an acquisition module, a processing module and an adjustable shock-absorbing unit;
the acquisition module is used for acquiring adjusting signals generated by the yaw system and the pitch system and integrating the adjusting signals into adjusting signals;
the processing module is used for generating a damping control signal according to the wind change signal and sending the damping control signal to a hydraulic station of the wind generating set;
the adjustable damping unit comprises a bearing plate arranged between a base of a yaw system and the bottom of a wind driven generator cabin, an upper fixing ring is fixedly connected to the bottom of the bearing plate, a connecting groove is formed in the upper fixing ring, a plurality of movable rings are arranged below the upper fixing ring, movable grooves are formed in the movable rings, movable flanges are arranged at the tops of the movable rings, the movable flanges of the uppermost movable rings extend into the connecting groove, the movable flanges of the other movable rings extend into the movable grooves of the adjacent movable rings, a plurality of dampers are arranged between the movable flanges and the movable grooves and the connecting groove, the bottom of the lowermost movable ring is fixedly connected with a lower fixing ring, the axes of the lower fixing ring and the movable rings are coincident with the axis of the tower of the wind driven generator, a plurality of circumferentially uniformly distributed hydraulic parts are fixedly connected to the tower side walls of the wind driven generator corresponding to each movable ring, oil ways of the hydraulic parts are communicated with a hydraulic station of the wind driven generator, an output shaft of the hydraulic parts extends into the tower of the wind driven generator, and an adjusting block is fixedly connected to the output shaft of the hydraulic parts.
2. The vibration absorbing system of a wind turbine according to claim 1, wherein: the adjusting signals comprise the current wind generating set direction, the adjusted wind generating set direction, the current wind generating set blade angle, the adjusted wind generating set blade angle, the wind direction and the wind power;
the processing module is used for combining the wind direction according to the current wind generating set direction and the adjusted wind generating set direction to obtain a hydraulic part to be operated; and combining and separating according to the blade angle of the current wind generating set and the blade angle of the wind generating set after adjustment to obtain the output quantity of the hydraulic part to be operated.
3. The vibration absorbing system of a wind turbine according to claim 2, wherein: the acquisition module is also used for acquiring wind directions and wind power around the wind driven generator in real time and correcting the wind directions and the wind power acquired from the yaw system and the pitch system in real time.
4. The vibration absorbing system of a wind turbine according to claim 1, wherein: connecting plates are uniformly distributed in the movable groove in the circumferential direction, shock absorbers are hinged to the two ends and the center of the connecting plates, one end of each shock absorber principle connecting plate is hinged to the side wall of the movable flange, and the axes of the shock absorbers at the two ends of the connecting plates are tangential to the movable flange.
5. The vibration absorbing system of a wind turbine according to claim 4, wherein: rubber rings are arranged on the upper surface and the lower surface of the movable groove, and the rubber rings on the upper surface and the lower surface of the movable groove are propped against the movable flange.
6. The vibration absorbing system of a wind turbine according to claim 1, wherein: the hydraulic part is fixedly connected to the outer side wall of the tower of the wind generating set, the protective cover is fixedly connected to the outer side wall of the tower of the wind generating set, the hydraulic part is covered in the protective cover, the inner side wall of the tower of the wind generating set at the output shaft of the hydraulic part is provided with a storage groove, and the regulating block is in sliding fit with the storage groove.
7. The vibration absorbing system of a wind turbine according to claim 1, wherein: the bearing plate is provided with a first connecting hole and a second connecting hole, a damping bushing is sleeved in the second connecting hole, the bearing plate is fixedly connected with a base of the yaw system through the first connecting hole, and the bearing plate is fixedly connected with the bottom of the wind driven generator cabin through the second connecting hole.
8. The vibration absorbing system of a wind turbine according to claim 4, wherein: the number and the positions of the hydraulic parts are in one-to-one correspondence with the connecting plates, and the axis of the output shaft of the hydraulic part passes through the center of the connecting plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311454414.7A CN117469087A (en) | 2023-11-03 | 2023-11-03 | Vibration damping system of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311454414.7A CN117469087A (en) | 2023-11-03 | 2023-11-03 | Vibration damping system of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117469087A true CN117469087A (en) | 2024-01-30 |
Family
ID=89634452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311454414.7A Withdrawn CN117469087A (en) | 2023-11-03 | 2023-11-03 | Vibration damping system of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117469087A (en) |
-
2023
- 2023-11-03 CN CN202311454414.7A patent/CN117469087A/en not_active Withdrawn
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Application publication date: 20240130 |