CN114017260B - Active anti-resonance device for sleeve support frame of wind driven generator - Google Patents
Active anti-resonance device for sleeve support frame of wind driven generator Download PDFInfo
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- CN114017260B CN114017260B CN202111253415.6A CN202111253415A CN114017260B CN 114017260 B CN114017260 B CN 114017260B CN 202111253415 A CN202111253415 A CN 202111253415A CN 114017260 B CN114017260 B CN 114017260B
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- 238000012545 processing Methods 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000013016 damping Methods 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001845 vibrational spectrum Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
- F05B2260/964—Preventing, counteracting or reducing vibration or noise by damping means
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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
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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
- Y02E10/728—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)
- Vibration Prevention Devices (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an active anti-resonance device for a sleeve support frame of a wind driven generator, which comprises a fan sleeve, a vibration detection assembly and a vibration control assembly, wherein the fan sleeve is arranged on the support frame; the vibration detection assembly comprises a support frame, a processing module and an amplitude sensor, wherein the support frame is vertically connected with the inner wall of the fan sleeve, the processing module is arranged on the support frame, the amplitude sensor is arranged on the inner wall of the fan sleeve, and the amplitude sensor is connected with the processing module; the vibration control component comprises a mass block, a magnetic field ring and an electromagnet; the mass block is arranged at the central position in the fan sleeve, the magnetic field ring is arranged at the bottom of the mass block, the electromagnet is fixedly arranged in the magnetic field ring, and the electromagnet is arranged in an annular matrix in the magnetic field ring; the magnetic block is connected with the mass block and is arranged at the center of the magnetic field ring; the electromagnet and the magnetic block form a magnetic attraction structure; the processing module is connected with the electromagnet through signals. The invention can realize the resistance to vibration amplitude, realize the stability of the sleeve and effectively prolong the service life of the fan sleeve.
Description
Technical Field
The invention relates to the technical field of safe operation matching of wind driven generators, in particular to an active anti-resonance device for a sleeve support frame of a wind driven generator.
Background
Along with the progress of society, environmental protection awareness is stronger and stronger, consequently, in order to realize the cleanliness of energy, the utilization of wind energy is more and more, in the region that high altitude wind is big, often use wind power generation in order to supply power to surrounding area, in order to let the generated energy of wind power generation be as steady as possible, just need use huge wind power generation flabellum, and be used for supporting fan blade and generating set through setting up the support sleeve that tows, because wind often can produce the resonance of certain frequency when blowing the fan blade, drive sleeve together vibrates, and the sleeve tends to be higher, this just makes slight vibration often bring the displacement by a wide margin, receive the vibration for a long time, can make the sleeve appear collapsing problem, just need install the device that is used for reducing resonance in the sleeve this moment, but the anti-resonance device on the market still has following problem at present:
firstly, the existing sleeve is used for preventing resonance, the tower is usually reinforced, an additional supporting structure is arranged to prevent large displacement, so that collapse is prevented, but the resonance frequency generated by blowing the fan blade by wind force is usually not fixed, the additional reinforcing body is directly used for reinforcing, if the resonance frequency of the fan blade is close to that of the reinforcing body, the reinforcing body is driven to vibrate together, the reinforcing body collapses firstly, the sleeve cannot be supported, and the sleeve is easily affected by resonance;
secondly, the existing anti-resonance device can only passively realize the prevention of resonance, and the prevention method has a better prevention effect on resonance with fixed frequency and small amplitude, however, the resonance of wind power generation is generated by blowing wind from a fan blade, and the wind is naturally generated and has no stability, so that the resonance frequency and the amplitude generated by big wind and small wind are different, and the effect of the existing anti-resonance device is poor;
thirdly, in order to generate enough resistance to resonance, the existing resonance protection device is huge in size and complex in installation, a wind generating set is often arranged on a mountain area at a high altitude or on the sea with large wind power, the huge resonance protection device is not beneficial to transportation, and certain safety problems exist in the installation process.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the problems occurring in the prior art.
Therefore, the invention aims to provide the active anti-resonance device for the sleeve support frame of the wind driven generator, which can realize the resistance to vibration amplitude, reduce the vibration amplitude and even make resonance disappear, realize the stability of the sleeve, effectively prolong the service life of the sleeve of the wind driven generator and prevent collapse.
In order to solve the technical problems, the invention provides the following technical scheme: an active anti-resonance device for a sleeve support frame of a wind driven generator comprises a fan sleeve, wherein a containing cavity is formed in the fan sleeve; the vibration detection assembly is positioned in the fan sleeve and comprises a support frame, a processing module and an amplitude sensor; the support frame is vertically connected with the inner wall of the fan sleeve, the processing module is arranged on the support frame, the amplitude sensor is arranged on the inner wall of the fan sleeve, and the amplitude sensor is connected with the processing module; the vibration control assembly is connected with the vibration detection assembly; the vibration control assembly comprises a mass block, a magnetic field ring and an electromagnet; the mass block is arranged at the central position in the fan sleeve; the magnetic field ring is arranged at the bottom of the mass block; the electromagnet is fixedly arranged in the magnetic field ring and is arranged in an annular matrix in the magnetic field ring; the magnetic block is connected with the mass block and is arranged at the center of the magnetic field ring; the electromagnet and the magnetic block form a magnetic attraction structure; the processing module is in signal connection with the electromagnet.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the support frame comprises a fixed plate, a support main beam, a support transverse frame and a fixed block; the fixed plate is fixedly connected with the fan sleeve, and the fixed plate is arranged on the inner wall of the fan sleeve in an annular matrix; two ends of the supporting main beam are respectively supported on two fixing plates which are mutually symmetrical in center; two fixed blocks are arranged on each supporting girder and are symmetrical with respect to the central transverse axis of the supporting girder; one end of the supporting transverse frame is connected with the fixed block, and the other end of the supporting transverse frame is connected with the fixed plate; the supporting transverse frames are symmetrically arranged on two sides of the supporting main beam and are perpendicular to the supporting main beam; and a square structure is formed between the supporting transverse frames.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the processing module is arranged on the supporting main beam and is positioned at the central position in the fan sleeve; the amplitude sensor is arranged in an annular matrix with the processing module as the center and is fixedly arranged on the inner wall of the sleeve.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the vibration control assembly further comprises a mass block bracket and a rotating block; the inner wall of the mass block bracket is fixedly connected with the outer wall of the mass block; the outer wall of the mass block support is inwards sunken to form a rotary groove which is matched and connected with the rotary block, and the rotary block is rotationally connected with the mass block support through the rotary groove; the rotary groove is internally provided with a ball, and the ball is in rolling connection with the mass block bracket; the rotating blocks are arranged in an annular matrix at the periphery of the mass block support.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the vibration control assembly further comprises a hydraulic stay bar and an annular wall; the annular wall is arranged at the bottom of the mass bracket; the annular wall is provided with a shaft groove which is matched and connected with the hydraulic stay bar; an avoidance groove is formed in the outer wall of the rotating block in an inward sunken mode, and a rotating shaft which is in fit connection with the hydraulic supporting rod is arranged on the groove wall of the avoidance groove; one end of the hydraulic stay bar is rotationally connected with the rotating block through a rotating shaft, and the other end of the hydraulic stay bar is rotationally connected with the annular wall through a shaft groove; the hydraulic stay bar is of a telescopic structure, and the hydraulic stay bar is arranged in an annular matrix.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the vibration control assembly further comprises a support plate and a support rod; the supporting plate is arranged at the bottom of the annular wall; the supporting plate is arranged in a circular shape and is arranged at the inner center of the fan sleeve; one end of the supporting rod is connected with the outer wall of the supporting plate, and the other end of the supporting rod is fixedly connected with the inner wall of the fan sleeve; the support rods are arranged in an annular matrix at the periphery of the support plate.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the vibration control assembly further comprises a fixed sleeve, a buffer rod and a damping table; the damping table is arranged at the center of the supporting plate circular ring and is in sliding connection with the mass block; one end of the fixed sleeve is fixed on the inner wall of the supporting plate, and the fixed sleeve is arranged on the inner wall of the supporting plate in an annular matrix; a buffer spring is arranged in the fixed sleeve; one end of the buffer rod is arranged on the outer wall of the damping table, and the other end of the buffer rod is inserted into the fixed sleeve and is in sliding connection with the fixed sleeve through the buffer spring, and the buffer rod and the buffer spring form a spring reset structure; the buffer rods are arranged on the periphery of the damping table in an annular matrix.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the vibration control assembly further comprises a connecting rod; the magnetic field ring is arranged at the bottom of the supporting plate; the magnetic block is connected with the damping table through a connecting rod.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the device also comprises a connecting piece; the connecting piece comprises a hanging ring and a steel cable; the hanging ring is arranged on the fixed block; two ends of the steel cable are respectively connected with the hanging ring and the mass block bracket; the steel cables are arranged in a matrix in the fan sleeve.
As a preferred embodiment of the active anti-resonance device for a sleeve support frame of a wind turbine according to the present invention, the active anti-resonance device comprises: the fixing blocks are of separate structures, and the fixing blocks mutually fix the separate structures through bolts; the bolt is arranged on the balance with respect to the center line of the fixed block.
The invention has the beneficial effects that: the vibration detection device can detect the transmitted vibration through the arranged amplitude sensor, the electromagnet is controlled through the processing module, and the moving amplitude and the vibration frequency of the mass block are controlled through the magnetic field generated by the electromagnet, so that the mass block is equal to the detected vibration amplitude and opposite in direction, thereby counteracting the vibration wave and realizing the stability of the sleeve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic overall front sectional view of an active anti-resonance device for a sleeve support frame of a wind driven generator.
Fig. 2 is an enlarged schematic view of the structure at X in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at Y in fig. 1.
Fig. 4 is an enlarged schematic view of the structure Z in fig. 1.
FIG. 5 is a schematic top view cross-sectional structure of a fan sleeve and process module connection.
Fig. 6 is a schematic top view of a fan sleeve and mass support connection.
FIG. 7 is a schematic top view of a cross-sectional structure of a fan sleeve and support plate connection.
Fig. 8 is a schematic view of a three-dimensional structure of a support plate.
Fig. 9 is a schematic diagram of the working principle of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 8, in a first embodiment of the present invention, an active anti-resonance device for a support frame of a wind turbine generator is provided, which includes a fan sleeve 100, a vibration detection assembly 200, a vibration control assembly 300, and a connection member 400. The fan sleeve 100 is internally provided with a containing cavity, the vibration detection assembly 200 is connected with the vibration control assembly 300 through a connecting piece 400, the three are positioned in the fan sleeve 100, and the vibration control assembly 300 is positioned below the vibration detection assembly 200; wherein the vibration detection assembly 200 comprises a support frame 201, a processing module 202 and an amplitude sensor 203; the support frame 201 is vertically connected with the inner wall of the fan sleeve 100, the processing module 202 is mounted on the support frame 201, the vibration amplitude sensor 203 is mounted on the inner wall of the fan sleeve 100, and the vibration amplitude sensor 203 is connected with the processing module 202.
Specifically, the vibration control assembly 300 includes a mass 301, a magnet 302, a magnetic field ring 303, and an electromagnet 304; the mass 301 is installed at the central position in the fan sleeve 100, and the mass 301 is preferably made of steel; in order to enable the mass 301 to move normally and be supported sufficiently, a mass support 305 is arranged on the periphery of the mass 301, and the mass support 305 is fixedly connected with the mass 301 for fixing the mass 301; the outer wall of the mass block bracket 305 is provided with a rotating block 306, one side of the rotating block 306 is provided with a hydraulic supporting rod 307, and a ring wall 308 is connected below the hydraulic supporting rod 307; the outer wall of the mass block support 305 is concavely provided with a rotary groove M which is matched and connected with a rotary block 306, and the rotary block 306 is rotationally connected with the mass block support 305 through the rotary groove M; a ball N is arranged in the rotating groove M, and the ball N is in rolling connection with the mass block bracket 305; the rotating blocks 306 are arranged in an annular matrix on the periphery of the mass block support 305, and the rotating blocks 306 are mutually clamped with the mass block support 305. The annular wall 308 is arranged at the bottom of the mass bracket 305, and a shaft groove B which is in fit connection with the hydraulic stay 307 is formed in the annular wall 308; the outer wall of the rotating block 306 is inwards concavely provided with an avoidance groove K, and the groove wall of the avoidance groove K is provided with a rotating shaft C which is in fit connection with the hydraulic supporting rod 307; one end of the hydraulic stay 307 is rotatably connected with the rotating block 306 through a rotating shaft C, and the other end is rotatably connected with the annular wall 308 through a shaft groove B; the hydraulic stay bars 307 are of telescopic structures, and the hydraulic stay bars 307 are arranged in an annular matrix. The mass 301 can be supported forcefully by the hydraulic support 307, and the mass 301 can be prevented from being blocked by the hydraulic support 307 when moving by the avoiding groove K on the rotating block 306.
Further, in order to reduce vibration when the fan sleeve 100 resonates and ensure stability of the fan sleeve 100, a support plate 309 is disposed at the bottom of the annular wall 308, and the support plate 309 is fixedly connected with the annular wall 308; the outer wall of the supporting plate 309 is provided with a supporting rod 310, one end of the supporting rod 310 is fixed on the outer wall of the supporting plate 309, and the other end is fixedly connected with the inner wall of the fan sleeve 100; in addition, the support plate 309 is arranged in a circular ring shape and is arranged at the center in the fan sleeve 100, and the support rods 310 are arranged in a circular matrix at the periphery of the support plate 309. Further, a damping stage 313 is provided at the center of the circular ring of the support plate 309, and the damping stage 313 is slidably connected with the mass 301; the inner wall of the supporting plate 309 is provided with a fixed sleeve 311, and the outer wall of the damping platform 313 is provided with a buffer rod 312 which is connected with the fixed sleeve 311 in a matching way; wherein one end of the fixing sleeve 311 is fixed on the inner wall of the support plate 309, and the fixing sleeve 311 is arranged in an annular matrix on the inner wall of the support plate 309; a buffer spring 311a is arranged in the fixed sleeve 311; one end of the buffer rod 312 is installed on the outer wall of the damping platform 313, the other end of the buffer rod 312 is inserted into the fixed sleeve 311 and is in sliding connection with the fixed sleeve 311 through the buffer spring 311a, the buffer rod 312 and the buffer spring 311a form a spring return structure, and the buffer rod 312 is arranged in an annular matrix on the periphery of the damping platform 313.
Further, the magnetic field ring 303 is installed at the bottom of the supporting plate 309 and fixedly connected with the supporting plate 309; the electromagnet 304 is fixedly arranged in the magnetic field ring 303, the electromagnet 304 is arranged in an annular matrix in the magnetic field ring 303, the magnetic block 302 is arranged at the center of the magnetic field ring 303, and the electromagnet 304 and the magnetic block 302 form a magnetic attraction structure; the magnetic block 302 is a permanent magnet, and the magnetic block 302 is connected with the damping platform 313 through the connecting rod 314, wherein the connecting rod 314 is in threaded connection with the magnetic block 302, and the connecting rod 314 is also in threaded connection with the damping platform 313. The notification arrangement field ring 303 controls the movement of the damping mount 313 so that opposite traction forces are generated to counteract the amplitude of the resonance.
Further, the supporting frame 201 includes a fixing plate 201a, a supporting main beam 201b, a supporting cross frame 201c, and a fixing block 201d. The fixing plate 201a is fixedly connected with the fan sleeve 100, and the fixing plate 201a is arranged on the inner wall of the fan sleeve 100 in an annular matrix; two ends of the supporting main beam 201b are respectively supported on two fixing plates 201a which are mutually symmetrical in center; two fixing blocks 201d are mounted on each supporting main beam 201b, and the two fixing blocks 201d are symmetrical about the central transverse axis of the supporting main beam 201 b; one end of the supporting transverse frame 201c is connected with the fixed block 201d, and the other end is connected with the fixed plate 201 a; the supporting cross frames 201c are symmetrically arranged at two sides of the supporting main beam 201b and are perpendicular to the supporting main beam 201 b; the supporting cross frames 201c form a square structure. The fixing blocks 201d are of a separate structure, and the fixing blocks 201d fix their separate structures to each other by bolts H, and the bolts H are provided to the scale with respect to the center line of the fixing blocks 201d. In addition, the connector 400 includes a hoist link 401 and a wire rope 402; the hanging ring 401 is arranged on the fixed block 201 d; the two ends of the steel cable 402 are respectively connected with the hanging ring 401 and the mass block support 305, and the steel cable 402 is arranged in a matrix in the fan sleeve 100. Wherein the processing module 202 is mounted on the supporting main beam 201b and is positioned at the central position in the fan sleeve 100; the amplitude sensors 203 are arranged in an annular matrix with the processing module 202 as a center, and are fixedly mounted on the inner wall of the sleeve 100. In practice, the vibration amplitude sensor 203 receives the resonance vibration amplitude, the processing module 202 realizes the reverse signal control, and the supporting main beam 201b and the supporting transverse frame 201c are used for transmitting traction force, so as to counteract the resonance.
Example 2
Referring to fig. 1 to 9, in a second embodiment of the present invention, based on the previous embodiment, the present invention needs to be installed inside the fan sleeve 100 when installed, the fixing plate 201a is fixedly installed on the inner wall of the fan sleeve 100, then both ends of the supporting girder 201b are fixedly supported on the two fixing plates 201a, respectively, and the fixing plates 201a traverse the fan sleeve 100 so that they are installed at the center line of the fan sleeve 100, thereby ensuring the stress. The supporting crossbearers 201c are installed on two sides of the supporting main beam 201b, the supporting crossbearers 201c are connected with the supporting main beam 201b through the fixing blocks 201d, the fixing blocks 201d are fixed through the bolts H, the supporting crossbearers 201c are firmly connected with the supporting main beam 201b, and then the other ends of the supporting crossbearers 201c are fixed on the fixing plates 201 a. By reserving a gap between the supporting transverse frame 201c and the fan sleeve 100, after the fan sleeve 100 is erected, a climbing elevator for maintaining the wind generating set is convenient to set, so that maintenance staff can maintain the wind generating set to the top end of the wind generating set in the later period. The processing module 202 is fixedly arranged at the center of the top of the supporting main beam 201b, the distances from the processing module to any position of the inner wall of the fan sleeve 100 are guaranteed to be equal, then the amplitude sensor 203 is connected to the processing module 202 by utilizing wires, signal connection of the processing module and the amplitude sensor is guaranteed, and then the amplitude sensor 203 is fixed on the inner wall of the fan sleeve 100; a hanging ring 401 is mounted and fixed at the bottom of the fixed block 201d, and a steel cable 402 is sleeved on the hanging ring 401; at this time, the mass block support 305 wrapping the mass block 301 is hoisted at the center of the lower part in the fan sleeve 100 by using the steel ropes 402, the hoisting lengths of the steel ropes 402 are ensured to be equal, after the hoisting of the mass block support 305 is completed, the rotating block 306 is rotationally connected with the mass block support 305 through the rotating groove M, one end of the hydraulic support 307 is arranged on the rotating block 306 through the rotating shaft C, and the other end is arranged in the shaft groove B on the annular wall 308; the support plate 309 is fixedly installed at the bottom of the annular wall 308, and the support plate 309 is positioned at the inner center of the fan sleeve 100 by adjusting the hydraulic support rod 307, and the support plate 309 is fixed inside the fan sleeve 100 by the support rod 310, so that the damping platform 313 is positioned right below the mass 301 and is in contact with the mass 301; the connecting rod 314 is screwed to the bottom center of the damping mount 313, and the magnet 302 is connected to the connecting rod 314 so that the magnet 302 is positioned at the center of the magnetic field ring 303, and the device mounting is completed.
After the installation is completed, the fan sleeve 100 is arranged at a strong place of wind power, and the wind driven generator is arranged above the fan sleeve 100 for generating power, because the wind driven generator is easy to generate certain vibration when being blown by wind power, when the vibration is at a certain frequency, the fan sleeve 100 and the fan sleeve are caused to resonate, so that the fan sleeve 100 is caused to shake, in the shaking process, the vibration is received by the amplitude sensor 203 and is transmitted into the processing module 202 for data processing, the vibration spectrum is obtained, and the processing module 202 obtains parameters such as the direction of the vibration, the vibration amplitude frequency and the like according to the collected vibration spectrum and the data of each amplitude sensor 203; in addition, the processing module 202 is composed of an oscilloscope and a singlechip, the oscilloscope receives the vibration wave signal and outputs the vibration wave signal to the singlechip, the singlechip reprocesses the signal to form a reverse Jian Xiebo, so that the electromagnet 304 sends a reverse signal, after receiving the signal, the electromagnet 304 starts to start, and by changing the current direction and the current intensity, the electromagnet 304 generates a magnetic field in the magnetic field ring 303, so that the internal magnetic block 302 is attracted and moves in the magnetic field, and the movement state of the magnetic block 302 is changed due to the fact that the internal magnetic field continuously changes according to the vibration.
Further, since the magnetic block 302 is fixedly connected with the damping platform 313 through the connecting rod 314, the magnetic block 302 drives the damping platform 313 to move, so that the damping platform 313 moves in the supporting plate 309, when the damping platform 313 moves, the buffer rods 312 arranged around shake in the fixed sleeve 311, thereby compressing the buffer springs 311a, preventing vibration generated by the movement of the damping platform 313 from being transferred to the supporting plate 309, and the movement of the damping platform 313 drives the mass 301 to move, when the mass 301 moves, the mass support 305 moves together, so that the rotating block 306 on the outer wall rotates in the rotating groove M by the balls N, at this time, the rotating angles of the rotating blocks 306 are different according to different moving directions, and the rotating block 306 moves together with the mass support 305, at this time, the hydraulic support 307 also extends or contracts according to the moving direction of the rotating block 306, meanwhile, the connection part of the hydraulic brace 307 and the rotating block 306 rotates and slides on the groove wall of the avoidance groove B through the rotating shaft C, the other end of the hydraulic brace 307 rotates with the annular wall 308 through the shaft groove B, so that the support of the mass block support 305 is realized, the steel cable 402 moves along with the movement of the mass block support 305, and the steel cable 402 generates larger traction force at the moment because the mass block 2 is made of steel, and is transmitted to the fixed block 201d through the hanging ring 401, and then transmitted to the supporting girder 201B and the supporting transverse frame 201C, and the supporting girder 201B and the supporting transverse frame 201 are fixedly connected with the fan sleeve 100 through the fixed plate 201a, so that the traction force is transmitted to the fan sleeve 100, and the vibration of the fan sleeve 100 is weakened and even stopped because the direction of the traction force transmitted to the fan sleeve 100 is opposite to the vibration direction, thereby preventing collapse of the fan sleeve 100 due to resonance.
By integrating the above, the mass 301 is arranged, and the movement of the mass 301 is utilized, so that huge traction force is generated, and resistance to resonance amplitude is realized through the traction force, so that the amplitude of vibration is reduced, and even resonance disappears, and further, the fan sleeve 100 cannot generate long-distance displacement and shake, so that the generation of metal fatigue is prevented, the service life of the fan sleeve 100 can be effectively prolonged, and collapse is prevented; in addition, the vibration transmitted by the vibration sensor 203 can be detected, and the processing module 202 controls the electromagnet 304, so that the magnetic field ring 303 can generate a continuously changing magnetic field, the effect of controlling the mass 301 to move reversely is achieved, and the application of reverse traction force is realized, so that resonance is counteracted; in addition, the fixing plate 201a is fixed with the fan sleeve 100, the whole device is supported through the supporting main beam 201b and the supporting transverse frame 202c, meanwhile, the supporting plate 309 is supported by the supporting rods 310, the whole device is divided into a plurality of parts to be respectively installed, and the equipment is simpler and more convenient to install and is convenient to overhaul and maintain.
It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (1)
1. An active anti-resonance device for a sleeve support frame of a wind driven generator is characterized in that: comprises a fan sleeve (100) with a containing cavity formed inside;
a vibration detection assembly (200), the vibration detection assembly (200) being located within the fan sleeve (100), the vibration detection assembly (200) comprising a support frame (201), a processing module (202) and an amplitude sensor (203); the support frame (201) is vertically connected with the inner wall of the fan sleeve (100), the processing module (202) is installed on the support frame (201), the amplitude sensor (203) is installed on the inner wall of the fan sleeve (100), and the amplitude sensor (203) is connected with the processing module (202);
a vibration control assembly (300), the vibration control assembly (300) being connected to the vibration detection assembly (200); the vibration control assembly (300) comprises a mass (301), a magnetic block (302), a magnetic field ring (303) and an electromagnet (304); the mass block (301) is arranged at the central position in the fan sleeve (100); the magnetic field ring (303) is arranged at the bottom of the mass (301); an electromagnet (304) is fixedly arranged in the magnetic field ring (303), and the electromagnet (304) is arranged in an annular matrix in the magnetic field ring (303); the magnetic block (302) is connected with the mass block (301), and the magnetic block (302) is arranged at the center of the magnetic field ring (303); the electromagnet (304) and the magnetic block (302) form a magnetic attraction structure; the processing module (202) is in signal connection with the electromagnet (304);
the support frame (201) comprises a fixed plate (201 a), a support main beam (201 b), a support transverse frame (201 c) and a fixed block (201 d); the fixing plate (201 a) is fixedly connected with the fan sleeve (100), and the fixing plate (201 a) is arranged on the inner wall of the fan sleeve (100) in an annular matrix; two ends of the supporting main beam (201 b) are respectively supported on two fixing plates (201 a) which are mutually symmetrical in center; two fixed blocks (201 d) are arranged on each supporting main beam (201 b), and the two fixed blocks (201 d) are symmetrical with respect to the central transverse axis of the supporting main beam (201 b); one end of the supporting transverse frame (201 c) is connected with the fixed block (201 d), and the other end of the supporting transverse frame is connected with the fixed plate (201 a); the supporting transverse frames (201 c) are symmetrically arranged on two sides of the supporting main beam (201 b) and are perpendicular to the supporting main beam (201 b); a square structure is formed between the supporting transverse frames (201 c);
the processing module (202) is arranged on the supporting main beam (201 b) and is positioned at the central position in the fan sleeve (100); the amplitude sensor (203) is arranged in an annular matrix with the processing module (202) as the center and is fixedly arranged on the inner wall of the sleeve (100);
the vibration control assembly (300) further comprises a mass support (305) and a rotor (306); the inner wall of the mass block support (305) is fixedly connected with the outer wall of the mass block (301); the outer wall of the mass block support (305) is inwards sunken to form a rotary groove (M) which is matched and connected with the rotary block (306), and the rotary block (306) is rotationally connected with the mass block support (305) through the rotary groove (M); a ball (N) is arranged in the rotary groove (M), and the ball (N) is in rolling connection with the mass block bracket (305); the rotating blocks (306) are arranged in an annular matrix at the periphery of the mass block bracket (305);
the vibration control assembly (300) further comprises a hydraulic strut (307) and a circumferential wall (308); the annular wall (308) is mounted at the bottom of the mass support (305); the annular wall (308) is provided with a shaft groove (B) which is matched and connected with the hydraulic stay bar (307); an avoidance groove (K) is formed in the outer wall of the rotating block (306) in an inward sunken mode, and a rotating shaft (C) which is in fit connection with the hydraulic supporting rod (307) is arranged on the groove wall of the avoidance groove (K); one end of the hydraulic supporting rod (307) is rotationally connected with the rotating block (306) through a rotating shaft (C), and the other end of the hydraulic supporting rod is rotationally connected with the annular wall (308) through a shaft groove (B); the hydraulic support rods (307) are of telescopic structures, and the hydraulic support rods (307) are arranged in an annular matrix;
the vibration control assembly (300) further comprises a support plate (309) and a support rod (310);
the support plate (309) is mounted at the bottom of the annular wall (308); the supporting plate (309) is arranged in a circular ring shape and is arranged at the inner center of the fan sleeve (100); one end of the supporting rod (310) is connected with the outer wall of the supporting plate (309), and the other end of the supporting rod is fixedly connected with the inner wall of the fan sleeve (100); the support rods (310) are arranged in an annular matrix at the periphery of the support plate (309);
the vibration control assembly (300) further comprises a fixed sleeve (311), a buffer rod (312) and a damping table (313); the damping table (313) is arranged at the inner center of the circular ring of the supporting plate (309), and the damping table (313) is in sliding connection with the mass block (301); one end of the fixing sleeve (311) is fixed on the inner wall of the supporting plate (309), and the fixing sleeve (311) is arranged on the inner wall of the supporting plate (309) in an annular matrix; a buffer spring (311 a) is arranged in the fixed sleeve (311); one end of the buffer rod (312) is arranged on the outer wall of the damping table (313), and the other end of the buffer rod is inserted into the fixed sleeve (311) and is in sliding connection with the fixed sleeve (311) through the buffer spring (311 a), and the buffer rod (312) and the buffer spring (311 a) form a spring return structure; the buffer rods (312) are arranged in an annular matrix at the periphery of the damping table (313);
the shock control assembly (300) further includes a connecting rod (314); the magnetic field ring (303) is arranged at the bottom of the supporting plate (309); the magnetic block (302) is connected with the damping table (313) through a connecting rod (314);
also comprises a connecting piece (400); the connecting piece (400) comprises a hanging ring (401) and a steel cable (402); the hanging ring (401) is arranged on the fixed block (201 d); two ends of the steel cable (402) are respectively connected with the hanging ring (401) and the mass block bracket (305); the steel cables (402) are arranged in a matrix in the fan sleeve (100);
the fixing blocks (201 d) are of separate structures, and the fixing blocks (201 d) mutually fix the separate structures through bolts (H); the bolts (H) are arranged on the balance with respect to the center line of the fixed block (201 d).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111253415.6A CN114017260B (en) | 2021-10-27 | 2021-10-27 | Active anti-resonance device for sleeve support frame of wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111253415.6A CN114017260B (en) | 2021-10-27 | 2021-10-27 | Active anti-resonance device for sleeve support frame of wind driven generator |
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| CN114017260B true CN114017260B (en) | 2023-06-23 |
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| CN101571108B (en) * | 2009-06-09 | 2011-07-27 | 西安工业大学 | Two-dimensional vibroswitch device for windmill generator |
| CN102005890B (en) * | 2010-10-18 | 2012-11-21 | 南京航空航天大学 | Resonance type electromagnetic actuator |
| DE102012222191A1 (en) * | 2012-12-04 | 2014-06-05 | Wobben Properties Gmbh | Vibration-limiting module and device, building segment for a construction device and wind turbine with a vibration-limiting module |
| KR101437363B1 (en) * | 2013-01-07 | 2014-09-15 | 한국기계연구원 | Damper and generator damper |
| KR101672653B1 (en) * | 2015-10-02 | 2016-11-04 | 현대건설주식회사 | Resonance Avoidance Apparatus of Wind Turbine Tower using Magneto-Rheological fluid, and Tower using thereof |
| ES2959629T3 (en) * | 2016-01-15 | 2024-02-27 | Fm Energie Gmbh & Co Kg | Vibration absorber that has an electromagnetic brake for wind turbines |
| WO2019029839A1 (en) * | 2017-08-08 | 2019-02-14 | Fm Energie Gmbh & Co.Kg | Rotation damper and vibration absorber equipped therewith |
| CN110296048B (en) * | 2019-06-17 | 2020-06-02 | 华中科技大学 | Fan power generation equipment with damping function |
| CN110397561B (en) * | 2019-08-01 | 2021-01-12 | 江苏科技大学 | Tension leg type wave energy and wind energy comprehensive power generation device and intelligent vibration control system thereof |
| CN112431320B (en) * | 2020-11-20 | 2021-09-21 | 湖南大学 | Eddy current tuned mass damper for vibration reduction of fan tower and mounting method thereof |
| CN112886763A (en) * | 2021-02-19 | 2021-06-01 | 赵岳歆 | Device for motor noise reduction and shock absorption based on magnetic attraction principle |
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