CN114017260A - 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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- CN114017260A CN114017260A CN202111253415.6A CN202111253415A CN114017260A CN 114017260 A CN114017260 A CN 114017260A CN 202111253415 A CN202111253415 A CN 202111253415A CN 114017260 A CN114017260 A CN 114017260A
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- 238000012545 processing Methods 0.000 abstract description 27
- 239000011159 matrix material Substances 0.000 abstract description 19
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000013016 damping Methods 0.000 description 21
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012552 review 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
-
- 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
-
- 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 supporting 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 outer side of the fan sleeve; the vibration detection assembly 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 installed on the support frame, the amplitude sensor is installed on the inner wall of the fan sleeve, and the amplitude sensor is connected with the processing module; 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, electromagnets are fixedly arranged in the magnetic field ring, and the electromagnets are arranged in the magnetic field ring in an annular matrix; the magnetic block is connected with the mass block and 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. 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 a wind driven generator, in particular to an active anti-resonance device for a sleeve support frame of the wind driven generator.
Background
With the development of society, environmental awareness is getting stronger, and therefore, in order to realize the cleanliness of energy, the utilization of wind energy is increasing, and in high-altitude areas, wind power generation is often used for supplying power to surrounding areas, in order to make the generated energy of wind power generation as stable as possible, huge wind power generation fan blades are needed and a high-rise support sleeve is arranged to support the fan blades and the generator set, when the wind blows the fan blades, the wind often generates resonance with certain frequency to drive the sleeve to vibrate together, the sleeve is often higher, so that slight vibration often brings about large displacement, and the sleeve collapses after being subjected to vibration for a long time, and at the moment, a device for reducing resonance needs to be installed in the sleeve, but the anti-resonance device in the market still has the following problems:
firstly, the existing sleeve usually adopts a tower barrel to reinforce for preventing resonance, an extra 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 power is not fixed, the fan blade is directly reinforced by an extra reinforcing body, if the resonance frequency of the fan blade is close to the resonance frequency of the reinforcing body, the reinforcing body is driven to vibrate together, so that the reinforcing body collapses firstly, the sleeve cannot be supported, and the sleeve is easily influenced by resonance;
secondly, the existing anti-resonance device can only passively prevent resonance, and the prevention method has a good prevention effect on resonance with fixed frequency and small amplitude, however, the resonance of wind power generation is generated by the wind driven by the fan blades, and the wind is naturally generated and has no stability, so that the resonance frequency and the amplitude generated by large wind and small wind are different, and the effect of the existing anti-resonance device is poor;
third is current resonance protector, in order to can produce sufficient resistance to resonance, often the volume is huge, and the installation is loaded down with trivial details, and wind generating set often sets up in the mountain region of high altitude or the great sea of wind-force, and huge resonance protector is unfavorable for the transportation, and has certain safety problem etc. in the installation.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the problems occurring in the prior art.
Therefore, an object of the present invention is to provide an active anti-resonance device for a wind turbine sleeve support frame, which can resist vibration amplitude, reduce vibration amplitude, even eliminate resonance, achieve sleeve stability, effectively prolong the life of a fan sleeve, 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 supporting 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 installed on the support frame, the amplitude sensor is installed 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; electromagnets are fixedly arranged in the magnetic field ring, and the electromagnets are arranged in the magnetic field ring in an annular matrix; the magnetic block is connected with the mass block and arranged at the center of the magnetic field ring; the electromagnet and the magnetic block form a magnetic attraction structure; and the processing module is in signal connection with the electromagnet.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the supporting frame comprises a fixing plate, a supporting main beam, a supporting transverse frame and a fixing block; the fixed plate is fixedly connected with the fan sleeve and 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 centrosymmetric with each other; two fixing blocks are mounted on each supporting main beam and are symmetrical about a central transverse shaft of the supporting main beam; 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 support crossbearers are symmetrically arranged at two sides of the support main beam and are perpendicular to the support main beam; and a square structure is formed between the supporting transverse frames.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the processing module is arranged on the support main beam and is positioned in the central position in the fan sleeve; the amplitude sensor is arranged in an annular matrix by taking the processing module as a center and is fixedly arranged on the inner wall of the sleeve.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the vibration control assembly further comprises a mass block bracket and a rotating block; the inner wall of the mass block support 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 rotating groove which is connected with the rotating block in a matched mode, and the rotating block is rotationally connected with the mass block support through the rotating groove; balls are arranged in the rotary grooves and are in rolling connection with the mass block supports; the rotating blocks are arranged on the periphery of the mass block support in an annular matrix.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the vibration control assembly further comprises a hydraulic stay bar and a ring wall; the annular wall is arranged at the bottom of the mass block bracket; the annular wall is provided with a shaft groove which is matched and connected with the hydraulic support rod; the outer wall of the rotating block is inwards recessed to form an avoiding groove, and a rotating shaft which is connected with the hydraulic support rod in a matched mode is arranged on the groove wall of the avoiding groove; one end of the hydraulic support rod is rotatably connected with the rotating block through a rotating shaft, and the other end of the hydraulic support rod is rotatably connected with the annular wall through a shaft groove; the hydraulic support rods are of telescopic structures and are arranged in an annular matrix.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the vibration control assembly further comprises a supporting plate and a supporting rod; the supporting plate is arranged at the bottom of the annular wall; the supporting plate is arranged in a circular ring shape and is arranged at the center in 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 on the periphery of the support plate in an annular matrix.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further 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 circular ring of the supporting plate and is connected with the mass block in a sliding manner; one end of the fixed sleeve is fixed on the inner wall of the support plate, and the fixed sleeve is arranged on the inner wall of the support 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, 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 preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the vibration control assembly further comprises a connecting rod; the magnetic field ring is arranged at the bottom of the support plate; the magnetic block is connected with the damping table through a connecting rod.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the device also comprises a connecting piece; the connecting piece comprises a lifting ring and a steel cable; the lifting 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 the fan sleeve in a matrix mode.
As a preferable aspect of the active anti-resonance device for the sleeve supporting frame of the wind turbine, the invention further comprises: the fixing blocks are of separated structures, and the fixing blocks fix the separated structures mutually through bolts; the bolt is arranged on the balance relative to the center line of the fixed block.
The invention has the beneficial effects that: the vibration amplitude sensor can detect the transmitted vibration, the processing module controls the electromagnet, and the magnetic field generated by the electromagnet controls the moving amplitude and the vibration frequency of the mass block, so that the mass block and the detected vibration amplitude are equal and opposite in direction, vibration waves are offset, and the stability of the sleeve is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is an overall front sectional view of an active anti-resonance device for a sleeve support frame of a wind turbine.
Fig. 2 is an enlarged schematic diagram of X in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at Y in fig. 1.
Fig. 4 is an enlarged view of the structure at Z in fig. 1.
FIG. 5 is a schematic view of a cross-sectional top view of the blower sleeve and processing module connection.
FIG. 6 is a schematic view of a top view of a connection between a blower sleeve and a mass support.
FIG. 7 is a schematic view of a cross-sectional top view of the connection between the fan sleeve and the support plate.
Fig. 8 is a three-dimensional structure diagram of the support plate.
Fig. 9 is a schematic diagram of the working principle of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
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 than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is 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, a first embodiment of the present invention provides an active anti-resonance device for a sleeve support frame of a wind turbine, which includes a wind turbine sleeve 100, a vibration detection assembly 200, a vibration control assembly 300, and a connector 400. A containing cavity H is formed in the fan sleeve 100, 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; the vibration detection assembly 200 comprises a support frame 201, a processing module 202 and an amplitude sensor 203; the supporting frame 201 is vertically connected with the inner wall of the blower sleeve 100, the processing module 202 is installed on the supporting frame 201, the amplitude sensor 203 is installed on the inner wall of the blower sleeve 100, and the amplitude sensor 203 is connected with the processing module 202.
Specifically, the vibration control assembly 300 includes 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, and the preferred mass block 301 is made of steel; in order to ensure that the mass block 301 moves normally and is supported sufficiently, a mass block bracket 305 is arranged on the periphery of the mass block 301, and the mass block bracket 305 is fixedly connected with the mass block 301 for fixing the mass block 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 stay bar 307, and an annular wall 308 is connected below the hydraulic stay bar 307; wherein, the outer wall of the mass block support 305 is inwards recessed to be provided with a rotating groove M which is connected with the rotating block 306 in a matching way, and the rotating block 306 is rotationally connected with the mass block support 305 through the rotating groove M; in addition, balls N are arranged in the rotating grooves M and are in rolling connection with the mass block support 305; the rotating blocks 306 are arranged in a circular matrix around the periphery of the mass support 305, and the rotating blocks 306 are engaged with the mass support 305. The annular wall 308 is arranged at the bottom of the mass support 305, and a shaft groove B which is matched and connected with the hydraulic support rod 307 is formed in the annular wall 308; an avoiding groove K is formed in the outer wall of the rotating block 306 in an inwards recessed mode, and a rotating shaft C which is connected with the hydraulic support rod 307 in a matched mode is arranged on the wall of the avoiding groove K; one end of a hydraulic stay bar 307 is rotatably connected with the rotating block 306 through a rotating shaft C, and the other end of the hydraulic stay bar is rotatably connected with the annular wall 308 through a shaft groove B; the hydraulic support rods 307 are of a telescopic structure, and the hydraulic support rods 307 are arranged in an annular matrix. Powerful support to quality piece 301 can be realized through the hydraulic pressure vaulting pole 307 that sets up to utilize and set up on the commentaries on classics piece 306 and avoid the groove K and can prevent to receive hydraulic pressure vaulting pole 307 when quality piece 301 removes the hindrance.
Further, in order to reduce vibration when the fan sleeve 100 resonates and ensure the stability of the fan sleeve 100, a support plate 309 is arranged at the bottom of the annular wall 308, and the support plate 309 is fixedly connected with the annular wall 308; a support rod 310 is arranged on the outer wall of the support plate 309, one end of the support rod 310 is fixed on the outer wall of the support plate 309, and the other end of the support rod 310 is fixedly connected with the inner wall of the fan sleeve 100; in addition, the supporting plate 309 is disposed in a circular ring shape and is disposed at the center of the blower sleeve 100, and the supporting rods 310 are disposed in a circular matrix around the supporting plate 309. In addition, a damping table 313 is arranged at the center of the circular ring of the support plate 309, and the damping table 313 is slidably connected with the mass 301; a fixed sleeve 311 is arranged on the inner wall of the supporting plate 309, and a buffer rod 312 which is matched and connected with the fixed sleeve 311 is arranged on the outer wall of the damping table 313; wherein one end of the fixing bushings 311 is fixed on the inner wall of the supporting plate 309, and the fixing bushings 311 are arranged in a circular matrix on the inner wall of the supporting 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 table 313, the other end is inserted into the fixed sleeve 311 and is slidably connected 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 rods 312 are arranged in an annular matrix at the periphery of the damping table 313.
Further, the magnetic field ring 303 is installed at the bottom of the supporting plate 309 and is fixedly connected with the supporting plate 309; the electromagnets 304 are fixedly installed inside the magnetic field ring 303, the electromagnets 304 are arranged in the magnetic field ring 303 in an annular matrix manner, the magnetic block 302 is arranged at the center of the magnetic field ring 303, and the electromagnets 304 and the magnetic block 302 form a magnetic attraction structure; the magnetic block 302 is a permanent magnet, the magnetic block 302 is connected with the damping table 313 through a 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 table 313. Informing the setting magnetic field loop 303 controls the movement of the damping table 313 so that an opposite pulling force is generated to cancel 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 201 d. 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 centrosymmetric with each other; 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 fixing block 201d, and the other end is connected with the fixing plate 201 a; the supporting transverse frames 201c are symmetrically arranged at two sides of the supporting main beam 201b and are vertical to the supporting main beam 201 b; the supporting cross frames 201c form a square structure. The fixing block 201d is a separate structure, and the fixing block 201d fixes the separate structures thereof to each other by a bolt H, and the bolt H is provided to the scale with respect to a center line of the fixing block 201 d. In addition, the connector 400 includes a bail 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 connected to the hanging ring 402 and the mass bracket 305, respectively, and the steel cables 402 are arranged in a matrix in the blower sleeve 100. The processing module 202 is installed on the support main beam 201b and is located at the central position in the fan sleeve 100; the amplitude sensors 203 are arranged in an annular matrix centered on the processing module 202 and are fixedly mounted on the inner wall of the sleeve 100. In practice, the vibration amplitude sensor 203 is arranged to receive the resonance vibration amplitude, the processing module 202 is used to realize reverse signal control, and the supporting main beam 201b and the supporting cross frame 201c are arranged to transmit traction force, so as to counteract the resonance vibration.
Example 2
Referring to fig. 1 to 9, in a second embodiment of the present invention, based on the previous embodiment, when the present invention is installed, the present invention needs to be installed inside the blower sleeve 100, first, the fixing plate 201a is fixedly installed on the inner wall of the blower sleeve 100, then, both ends of the supporting main beam 201b are fixedly supported on the two fixing plates 201a, respectively, and the fixing plate 201a traverses through the blower sleeve 100, so that it is installed at the center line of the blower sleeve 100, thereby ensuring the stress. Then, the supporting cross frame 201c is installed at two sides of the supporting main beam 201b, the supporting cross frame 201c is connected with the supporting main beam 201b through the fixing block 201d, the fixing block 201d is fixed by the bolt H, so that the supporting cross frame 201c is firmly connected with the supporting main beam 201b, and then the other end of the supporting cross frame 201c is fixed on the fixing plate 201 a. Through reserving the clearance between support crossbearer 201c and the fan sleeve 100, erect the back at fan sleeve 100, be convenient for set up the elevator that climbs of maintaining wind generating set to supply maintainer later stage to the aerogenerator top to maintain. Then, the processing module 202 is fixedly installed at the center of the top of the support main beam 201b, the distance from the processing module to any position of the inner wall of the fan sleeve 100 is guaranteed to be equal, then the amplitude sensor 203 is connected to the processing module 202 through a wire, the signal connection between 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 installed and fixed at the bottom of the fixing block 201d, and a steel cable 402 is sleeved on the hanging ring 401; at the moment, 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 cables 402, the hoisting lengths of the steel cables 402 are ensured to be equal, after the hoisting of the mass block support 305 is finished, the rotating block 306 is rotatably connected with the mass block support 305 through the rotating groove M, one end of the hydraulic support rod 307 is rotated on the rotating block 306 through the rotating shaft C, and the other end of the hydraulic support rod is installed in the shaft groove B on the annular wall 308; then, the supporting plate 309 is fixedly installed at the bottom of the annular wall 308, at this time, the supporting plate 309 is positioned at the center inside the fan sleeve 100 through adjustment of the hydraulic support rod 307, and the supporting plate 309 is fixed inside the fan sleeve 100 by using the support rod 310, so that the damping table 313 is positioned right below the mass block 301 and is in contact with the mass block 301; the connecting rod 314 is connected to the bottom center position of the damping table 313 through a screw thread, and then the magnetic block 302 is connected to the connecting rod 314, so that the magnetic block 302 is located at the center of the magnetic field ring 303, and the device installation is completed.
After the installation is finished, the fan sleeve 100 is arranged in a place with strong wind power, and the wind driven generator is arranged above the fan sleeve 100 and used for generating electricity, and when the wind driven generator is blown by wind power, certain vibration is easy to generate, when the vibration is at a certain frequency, the fan sleeve 100 and the vibration can resonate, so that the fan sleeve 100 shakes, in the shaking process, the vibration is received by the amplitude sensor 203 and transmitted to the processing module 202 for data processing, so that a vibration frequency spectrum is obtained, and at the moment, the processing module 202 learns parameters such as the vibration direction, the vibration amplitude frequency and the like according to the collected vibration frequency spectrum and the data of each amplitude sensor 203; it should be noted that the processing module 202 is composed of an oscilloscope and a single chip microcomputer, the oscilloscope receives a vibration wave signal and outputs the vibration wave signal to the single chip microcomputer, the single chip microcomputer processes the signal to form a reverse simple wave, so as to send a reverse signal to the electromagnet 304, the electromagnet 304 starts after receiving the signal, 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 motion state of the magnetic block 302 is changed because the internal magnetic field is constantly changed according to the vibration.
Further, because the magnetic block 302 is fixedly connected with the damping table 313 through the connecting rod 314, the magnetic block 302 drives the damping table 313 to move, so that the damping table 313 moves in the supporting plate 309, when the damping table 313 moves, the buffer rods 312 arranged around shake in the fixing sleeves 311, so as to compress the buffer springs 311a, and prevent the vibration generated by the movement of the damping table 313 from being transmitted to the supporting plate 309, because the movement of the damping table 313 drives the mass block 301 to move, when the mass block 301 moves, the mass block support 305 moves along with the mass block, so that the rotating block 306 on the outer wall rotates in the rotating groove M by using the balls N, at this time, the rotating angle of the rotating block 306 is different according to the moving direction, and the rotating block 306 moves along with the mass block support 305, at this time, the hydraulic support rod 307 extends or contracts according to the moving direction of the rotating block 306, and at the connection position of the hydraulic support rod 307 and the rotating block 306 rotates and slides on the groove wall of the avoiding groove B through the rotating shaft C, the other end of the hydraulic brace 307 rotates through the shaft groove B and the annular wall 308, so that the mass block support 305 is supported, the steel cable 12 moves along with the movement of the mass block support 305, and the mass block 2 is made of steel and has high mass, so that the steel cable 402 generates large traction force and is transmitted to the fixed block 201d through the hanging ring 401, and then transmitted to the support main beam 201B and the support cross frame 201c, and the support main beam 201B and the support cross frame 201 are fixedly connected with the fan sleeve 100 through the fixed plate 201, so that the traction force is transmitted to the fan sleeve 100, and the direction of the traction force transmitted to the fan sleeve 100 is opposite to the direction of vibration, so that the vibration of the fan sleeve 100 is weakened, even the vibration is stopped, and the collapse of the fan sleeve 100 caused by resonance is prevented.
In summary, by the mass 301 and the movement of the mass 301, a large traction force is generated, and the resistance to the resonance amplitude is realized by the traction force, so that the vibration amplitude is reduced, even the resonance disappears, and further the fan sleeve 100 does not generate long-distance displacement shaking, thereby preventing the generation of metal fatigue, effectively prolonging the service life of the fan sleeve 100, and preventing the collapse; in addition, the transmitted vibration can be detected by the arranged amplitude sensor 203, and the electromagnet 304 is controlled by the processing module 202, so that a constantly changing magnetic field can be generated in the magnetic field ring 303, the effect of controlling the mass block 301 to move in the reverse direction is achieved, the application of reverse traction force is realized, and resonance is counteracted; in addition, the fixing plate 201a is fixed to the fan sleeve 100, the whole device is supported through the supporting main beam 201b and the supporting cross frame 202c, the supporting plate 309 is supported through the supporting rod 310, the whole device is divided into a plurality of parts to be installed respectively, and the device is simpler and more convenient to install and convenient to overhaul and maintain.
It is important to note that the construction and arrangement of the present application as shown in the various 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., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited 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 this 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 present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling 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, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an active anti-resonance device for aerogenerator sleeve support frame which characterized in that: comprises a fan sleeve (100) which is internally provided with a containing cavity (H);
the vibration detection assembly (200) is positioned in the fan sleeve (100), and the vibration detection assembly (200) comprises a support frame (201), a processing module (202) and an amplitude sensor (203); the supporting frame (201) is vertically connected with the inner wall of the fan sleeve (100), the processing module (202) is installed on the supporting 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);
the vibration control assembly (300), the vibration control assembly (300) is connected with the vibration detection assembly (200); the vibration control assembly (300) comprises a mass block (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); electromagnets (304) are fixedly installed inside the magnetic field ring (303), and the electromagnets (304) are arranged in the magnetic field ring (303) in an annular matrix; the magnetic block (302) is connected with the mass block (303), 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).
2. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 1, wherein: the supporting frame (201) comprises a fixing plate (201a), a supporting main beam (201b), a supporting transverse frame (201c) and a fixing block (201 d); 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 centrosymmetric with each other; 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 fixing block (201d), and the other end of the supporting transverse frame is connected with the fixing plate (201 a); the supporting transverse frames (201c) are symmetrically arranged at two sides of the supporting main beam (201b) and are vertical to the supporting main beam (201 b); the supporting cross frames (201c) form a square structure.
3. The active anti-resonance device for a wind turbine sleeve support according to claim 2, characterized in that: the processing module (202) is arranged on the main support beam (201b) and is positioned at the central position in the fan sleeve (100); the amplitude sensors (203) are arranged in an annular matrix by taking the processing module (202) as a center and are fixedly arranged on the inner wall of the sleeve (100).
4. An active anti-resonance device for a wind turbine sleeve support according to claim 1 or 3, characterized in that: the shock control assembly (300) further comprises a mass support (305) and a rotating block (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 recessed to form a rotating groove (M) which is connected with the rotating block (306) in a matched mode, and the rotating block (306) is connected with the mass block support (305) in a rotating mode through the rotating groove (M); balls (N) are arranged in the rotary groove (M), and the balls (N) are in rolling connection with the mass block support (305); the rotating blocks (306) are arranged in an annular matrix at the periphery of the mass block support (305).
5. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 4, wherein: the shock control assembly (300) further comprises a hydraulic strut (307) and an annular wall (308); the annular wall (308) is arranged 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 support rod (307); an avoidance groove (K) is formed in the outer wall of the rotating block (306) in an inwards recessed mode, and a rotating shaft (C) which is connected with the hydraulic support rod (307) in a matched mode is arranged on the wall of the avoidance groove (K); one end of the hydraulic support rod (307) is rotatably connected with the rotating block (306) through a rotating shaft (C), and the other end of the hydraulic support rod is rotatably 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.
6. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 5, wherein: the vibration control assembly (300) further comprises a support plate (309) and a support rod (310);
the supporting plate (309) is arranged at the bottom of the annular wall (308); the supporting plate (309) is arranged in a circular ring shape and is arranged at the center in 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 supporting rods (310) are arranged on the periphery of the supporting plate (309) in an annular matrix.
7. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 6, wherein: 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 connected with the mass block (301) in a sliding manner; one end of each fixing sleeve (311) is fixed on the inner wall of the support plate (309), and the fixing sleeves (311) are arranged on the inner wall of the support plate (309) in an annular matrix; 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 table (313), 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 a buffer spring (311a), and the buffer rod (312) and the buffer spring (311a) form a spring resetting structure; the buffer rods (312) are arranged on the periphery of the damping table (313) in an annular matrix.
8. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 7, wherein: the shock control assembly (300) further comprises 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).
9. The active anti-resonance device for a sleeve support frame of a wind turbine as claimed in claim 8, wherein: further comprising a connector (400); the connecting piece (400) comprises a lifting ring (401) and a steel rope (402); the lifting ring (401) is arranged on the fixed block (201 d); two ends of the steel cable (402) are respectively connected with a hanging ring (402) and a mass block bracket (305); the steel cables (402) are arranged in a matrix in the fan sleeve (100).
10. An active anti-resonance device for a wind turbine sleeve support according to claim 2 or 9, characterized in that: the fixing block (201d) is of a separated structure, and the fixing block (201d) mutually fixes the separated structures of the fixing block (201d) through bolts (H); the bolt (H) is arranged on the balance relative to the center line of the fixing block (201 d).
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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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| 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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