CN114427516A - Wind turbine tower barrel and method for resisting wind induced vibration - Google Patents
Wind turbine tower barrel and method for resisting wind induced vibration Download PDFInfo
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- CN114427516A CN114427516A CN202210115665.1A CN202210115665A CN114427516A CN 114427516 A CN114427516 A CN 114427516A CN 202210115665 A CN202210115665 A CN 202210115665A CN 114427516 A CN114427516 A CN 114427516A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 238000013016 damping Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting 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
- 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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- 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
Abstract
The wind turbine tower barrel capable of resisting wind induced vibration comprises a tower barrel body, wherein a suspension device and a vibration damping device are installed in the tower barrel body, and the suspension device comprises an installation support and a suspension rope; the mounting supports are horizontally and uniformly arranged on the inner wall of the tower barrel in a surrounding mode, each mounting support is connected with a suspension rope, one end of each suspension rope is fixed on the mounting support, one end of each suspension rope is fixed on a mass sheet mounting frame, and a mass sheet is mounted in each mass sheet mounting frame; the spring support of the vibration damper is horizontally and uniformly installed on the inner wall of the tower barrel in a surrounding mode, a steel wire rope vibration isolator is installed on each spring support, one end of each steel wire rope vibration isolator is fixed to the spring support, and the other end of each steel wire rope vibration isolator is fixed to the mass piece mounting frame. The wind turbine tower barrel provided by the invention can resist wind-induced vibration and has the advantages of easiness in installation, simple structure and low cost; correspondingly, the invention also provides a wind-induced vibration resisting method for the tower barrel of the wind driven generator.
Description
Technical Field
The invention relates to a wind power tower tube vibration reduction technology, in particular to a wind power generator tower tube and a method for resisting wind induced vibration.
Background
Nowadays, the global economy is rapidly developed, the science and technology are continuously improved, but at the same time, the problems of supply shortage and environmental destruction caused by the increasing shortage of energy sources are also accompanied, so that the attention of all countries to renewable and pollution-free energy sources is beginning to be paid. Among various green energy sources, wind energy is one of the renewable energy sources with great prospect potential. The tower-shaped cylinder body of the wind driven generator has the characteristic of high flexibility due to the structural characteristics of the tower-shaped cylinder body, is sensitive to wind load, and can cause frequent vibration of the tower cylinder due to vibration of transverse wind, namely wind-induced vibration in the actual wind load bearing process, and fatigue cracks are easily generated on the tower cylinder and a support part or a connecting flange part due to long-time bearing of fatigue load, so that the potential hazards are brought to the structural integrity of the tower cylinder.
In the current practical application, an effective wind-induced vibration resisting mode is not available, and a proper vibration damping mode is also not available in the design process of the tower barrel; in theoretical research, most devices need to be supported on platforms, but platforms with proper heights may not exist inside the actual tower, and the platforms are not complete due to the existence of the transportation ladder; in addition, most of the adopted damping devices adopt hydraulic dampers (viscous dampers), but the medium of the dampers is easy to leak, and the dampers need to be frequently overhauled and have high cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the wind motor tower barrel capable of resisting wind induced vibration, and the wind motor tower barrel provided by the invention can resist wind induced vibration and has the advantages of easiness in installation, simple structure and low cost; correspondingly, the invention also provides a wind-induced vibration resisting method for the tower barrel of the wind driven generator, and the method has the advantages of good vibration resisting effect and easiness in implementation.
For the wind turbine tower, the technical scheme of the invention is as follows:
the wind turbine tower barrel capable of resisting wind induced vibration comprises a tower barrel body, wherein a suspension device and a vibration damping device are installed in the tower barrel body, and flange plates are arranged at the upper end and the lower end of the tower barrel body; the suspension device comprises a mounting bracket and a suspension rope, and the vibration damper comprises a mass sheet mounting rack and a mass sheet; the mounting supports are horizontally and uniformly arranged on the inner wall of the tower barrel in a surrounding mode, each mounting support is connected with a suspension rope, one end of each suspension rope is fixed on the mounting support, one end of each suspension rope is fixed on a mass sheet mounting frame, a mass sheet is mounted in each mass sheet mounting frame, and the mass sheet mounting frame and the mass sheet form a mass block; the vibration damper further comprises spring supports and a steel wire rope vibration isolator, the spring supports are horizontally and uniformly installed on the inner wall of the tower barrel in a surrounding mode, the steel wire rope vibration isolator is installed on each spring support, one end of each steel wire rope vibration isolator is fixed to each spring support, and the other end of each steel wire rope vibration isolator is fixed to the mass sheet installation frame; the center line of the installed mass piece mounting rack is superposed with the center line of the tower cylinder body.
The wind motor tower barrel capable of resisting wind induced vibration provided by the invention can resist wind induced vibration, and has the advantages of easiness in installation, simple structure and low cost, and the specific expression is as follows: the tower barrel can be directly arranged on other barrels of the wind turbine through the flange plate, so that the installation is easy; when the vibration reduction device works, when the tower drum body is subjected to wind-induced vibration, the mass block moves in the horizontal direction after being subjected to vibration, so that the steel wire rope vibration isolator of the vibration reduction device performs corresponding stretching and compressing motions, provides rigidity and damping for energy dissipation and vibration reduction, and can effectively resist wind-induced vibration; in addition, the wind turbine tower barrel provided by the invention has the advantages of small number of components, simple structure and low cost of the components, so that the wind turbine tower barrel is easy to popularize.
Preferably, in the wind turbine tower barrel capable of resisting wind-induced vibration, the suspension rope is a steel wire rope, and the suspension rope is used in cooperation with a steel wire rope clamp. The steel wire rope has high strength, is enough to support the vibration damper and has high reliability; in addition, the suspension rope is matched with the steel wire rope clamp for use, so that the suspension rope can not fall off when the suspension rope is convenient to install.
Preferably, in the wind turbine tower barrel capable of resisting wind-induced vibration, the mounting bracket is horizontally provided with a suspension bolt, one end of the suspension rope is fixed on the suspension bolt, a gap exists between the suspension rope and the mounting bracket, and elastic washers are filled in gaps on two sides of the suspension rope. The both sides space of suspending the rope is filled with the elastic washer, and the position of suspending the rope in midair can be retrained in the existence of elastic washer for the terminal lateral slip that can not of suspending the rope in midair, simultaneously, can also alleviate the terminal wearing and tearing of suspending the rope in midair.
As an optimization, in the wind turbine tower barrel resisting wind-induced vibration, a through hole is formed in the middle of the mass piece, a through hole is also formed in the middle of the bottom plate of the mass piece mounting frame, the mass piece is placed on the bottom plate of the mass piece mounting frame, and the center lines of the through holes of the mass piece and the bottom plate are overlapped; and a bolt is arranged in the through hole, a nut is arranged at the tail end of the bolt, and the mass sheet is fixed on the mass sheet mounting frame through the matching of the bolt and the nut. When the quantity of quality piece needs to be adjusted according to actual use condition, the fastening structure of bolt and nut is convenient for the change and the installation of quality piece.
Preferably, in the wind turbine generator tower barrel capable of resisting wind-induced vibration, a group of fixing plates are circumferentially mounted on the side surface of the mass plate mounting frame, and when the vibration damper is mounted, the fixing plates and the auxiliary mounting device are matched with each other to play a supporting role; the auxiliary mounting device comprises a mounting seat and a connecting plate; when the vibration damper is installed, the installation base is fixedly installed on the inner wall of the tower cylinder body, one end of the connecting plate is detachably connected with the installation base, and the other end of the connecting plate is detachably connected with the fixing plate; and after the vibration damper is installed, the connecting plate is detached. Make fixed plate and mount pad link to each other through the connecting plate to can play the fixed effect of bearing, be convenient for hanging device and damping device's installation to the quality piece mounting bracket.
Preferably, in the wind turbine generator tower barrel capable of resisting wind induced vibration, the steel wire rope vibration isolator is provided with a distance sensor. When the distance between the steel wire rope vibration isolator and the spring support is too close or too far, the alarm can give an alarm when the set value is reached, the displacement distance of the mass block is too large, and ground monitoring personnel should stop the wind motor to prevent loss.
Preferably, in the wind turbine tower barrel resisting wind-induced vibration, the protection device is installed in the tower barrel body and comprises a safety rope, one end of the safety rope is fixed on the installation support, the other end of the safety rope is fixed on the mass piece installation frame, and the safety rope is in a soft state after the safety rope is installed. Under the condition that the suspension rope is invalid, the existence of safety rope can support the quality piece mounting bracket, avoids the damage that it caused that drops.
Further, a protective net is horizontally arranged on the inner wall of the tower cylinder body, and the protective net is positioned below the mass sheet mounting frame; after the safety rope is tightened, the quality piece mounting rack connected with the safety rope cannot collide with the protective net. The existence of protection network can further ensure the security and the reliability of a wind-driven generator tower section of thick bamboo, can play the effect of accepting to the object that falls, avoids the object to drop the damage that causes.
Furthermore, infrared displacement sensors are horizontally and uniformly installed on the inner wall of the tower cylinder body in a surrounding mode, and the infrared displacement sensors are located between the protective net and the mass piece mounting frame. The infrared sensor can monitor the displacement of an object, and when the object falls, the infrared sensor can cut off the infrared ray, trigger the alarm and facilitate detection.
For the wind-resistant induced vibration method, the technical scheme of the invention is as follows:
the method is realized by arranging a suspension device and a vibration damping device in a wind power tower; the upper end and the lower end of the tower barrel are provided with flange plates; the suspension device comprises a mounting bracket and a suspension rope, and the vibration damper comprises a mass sheet mounting rack and a mass sheet; the mounting supports are horizontally and uniformly arranged on the inner wall of the tower barrel in a surrounding mode, each mounting support is connected with a suspension rope, one end of each suspension rope is fixed on the mounting support, one end of each suspension rope is fixed on a mass sheet mounting frame, a mass sheet is mounted in each mass sheet mounting frame, and the mass sheet mounting frame and the mass sheet form a mass block; the vibration damper further comprises spring supports and a steel wire rope vibration isolator, the spring supports are horizontally and uniformly installed on the inner wall of the tower barrel in a surrounding mode, the steel wire rope vibration isolator is installed on each spring support, one end of each steel wire rope vibration isolator is fixed to each spring support, and the other end of each steel wire rope vibration isolator is fixed to the mass sheet installation frame; the center line of the mass piece mounting frame after being mounted is superposed with the center line of the tower cylinder body; the suspension ropes of the suspension device are matched with each other to restrict the vertical motion of the mass block, so that the mass block can only move in the horizontal direction; when the vibration reduction device works, when the tower drum body is subjected to wind-induced vibration, the mass block moves in the horizontal direction after being subjected to vibration, so that the steel wire rope vibration isolator of the vibration reduction device performs corresponding stretching and compression motions, provides rigidity and damping, and performs energy consumption and vibration reduction; the main structure of the tower cylinder body is excited in any direction, the mass block is driven to move opposite to the main structure, and vibration of the main structure is weakened through the effect of the vibration damper.
The wind-induced vibration resisting method for the tower barrel of the wind driven generator has the advantages of good vibration resisting effect and easiness in implementation; when the method is implemented, the tower cylinder is directly arranged on other cylinders of the wind turbine through the flange plate, so that the method is easy to implement; in addition, the method of the invention utilizes the steel wire rope vibration isolators of the vibration damper to perform energy dissipation and vibration damping, the steel wire rope vibration isolators are uniformly annularly arranged around the mass block, when the mass block moves opposite to the main structure, the vibration damper can weaken the vibration of the main structure, and the vibration damping effect is good.
Drawings
FIG. 1 is a perspective view A of a wind turbine tower of the present invention resistant to wind-induced vibration;
FIG. 2 is a perspective view B of the wind turbine tower of the present invention resisting wind induced vibration;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a perspective view of the vibration damping device of the present invention;
FIG. 5 is a top view of the vibration damping device of the present invention;
fig. 6 is a perspective view of a mass plate mounting bracket of the present invention;
fig. 7 is a view showing an installation structure between a suspension bolt and a suspension rope according to the present invention;
FIG. 8 is a schematic diagram of the damping system of the present invention;
the labels in the figures are: 1, a tower drum body; 2-a flange plate; 3, mounting a bracket; 4-a suspension rope; 5-mass piece mounting rack, 501-bottom plate, 502-fixing plate, 503-lifting lug; 6-mass tablets; 7-a spring support; 8-a wire rope vibration isolator; 9-auxiliary installation device, 901-installation seat, 902-connection board; 10-suspension bolts; 11-a resilient washer; 12-a bolt; 13-a nut; 14-wire rope clamps; 15-a distance sensor; 16-protective device, 1601-safety line; 17-a protective net; 18-infrared displacement sensor.
Detailed Description
The present invention is further described below in conjunction with the following detailed description (including examples), which is not intended to limit the invention. Not described in detail below is common general knowledge in the art.
Example (b):
referring to fig. 1-8, the wind-induced vibration resistant tower barrel of the wind-driven generator comprises a tower barrel body 1, wherein a suspension device and a vibration damping device are installed in the tower barrel body 1, and flange plates 2 are arranged at the upper end and the lower end of the tower barrel body 1; the suspension device comprises a mounting bracket 3 and a suspension rope 4, and the vibration damper comprises a mass sheet mounting bracket 5 and a mass sheet 6; the mounting brackets 3 are horizontally and uniformly arranged on the inner wall of the tower barrel 1 in a surrounding mode, each mounting bracket 3 is connected with a suspension rope 4, one end of each suspension rope 4 is fixed to the mounting bracket 3, one end of each suspension rope 4 is fixed to a lifting lug 503 of a mass piece mounting bracket 5, a mass piece 6 is mounted in each mass piece mounting bracket 5, and each mass piece mounting bracket 5 and each mass piece 6 form a mass block; the vibration damping device further comprises spring supports 7 and a steel wire rope vibration isolator 8, the spring supports 7 are horizontally and uniformly installed on the inner wall of the tower barrel body 1 in a surrounding mode, the steel wire rope vibration isolator 8 is installed on each spring support 7, one end of each steel wire rope vibration isolator 8 is fixed on the spring support 7, and the other end of each steel wire rope vibration isolator 8 is fixed on the mass sheet mounting frame 5; the center line of the mass piece mounting frame 5 after being mounted is superposed with the center line of the tower barrel 1; the number of the mounting frames 5, the suspension ropes 4, the spring supports 7 and the steel wire rope vibration isolators 8 is 4.
When the wind-induced vibration resistant wind turbine tower barrel is used, the tower barrel body 1 is welded on other barrel bodies of a wind turbine through the flange plate 2; the suspension device and the vibration damping device are matched with each other to form a vibration damping system, and the mass piece mounting frame 5 and the mass piece 6 form a mass block; the suspension ropes 4 of the suspension device are matched with each other to restrict the vertical motion of the mass block, so that the mass block can only move in the horizontal direction; when the wind-induced vibration damping device works, when the tower barrel 1 is subjected to wind-induced vibration, the mass block moves in the horizontal direction after being subjected to vibration, so that the steel wire rope vibration isolator 8 of the vibration damping device performs corresponding stretching and compressing motions, and the steel wire rope vibration isolator 8 provides rigidity and damping to perform energy consumption and vibration damping; the main structure of the tower barrel is excited in any direction, the mass block is driven to move opposite to the main structure, and the vibration of the main structure is weakened through the effect of the vibration damper.
Referring to fig. 8, fig. 8 is a schematic diagram of the damping system of the present invention, the principle is as follows:
the damping system is a TMD system, and a tower barrel forms a main system; regarding the main system and the TMD system as a two-degree-of-freedom mass, spring and damping system, the dynamic equation of the system is as follows:
in the formula, m1The mass of the system, namely the mass of the main body in the invention, comprises the mass of the tower cylinder 1 and the concentrated mass at the top (the concentrated mass at the top is the weight of the device arranged at the top of the tower cylinder 1 and comprises the blades, the engine room and the hub of the wind turbine); k is a radical of1Is the system stiffness, which in the present invention is the body stiffness; c. C1Is the damping of the system, namely the main damping in the invention; x is the number of1The displacement generated after the main system (namely the tower drum) is vibrated; m is2Is the tuning quality of the TMD system, which in the present invention is the total mass of the mass sheet 6; k is a radical of2The rigidity of a TMD system is adopted, and the steel wire rope vibration isolator 8 mainly provides rigidity and damping in the invention, so that the rigidity of the vibration isolator is obtained in the invention; c. C2The damping coefficient of the TMD system is the damping of the vibration isolator in the invention; x is the number of2Is the displacement of the TMD system from the equilibrium position.
The formula for a simple resonance excitation force applied to the system can be expressed as:
F(t)＝F0sinωt
wherein omega is frequency, when the mass ratio, the frequency ratio and the damping ratio of the TMD are properly designed, the TMD can present the best vibration reduction effect; the mass ratio is 1.5-3% of the mass of the main body, the vibration damping effect is better along with the increase of the mass ratio, but the mass cannot be increased once by considering the structural strength of the main body; a large number of theories and experiments verify that the frequency ratio is best around 1, and is 0.99, while the damping ratio is 0.1.
Harmonic response and stress analysis are carried out on the device through finite element software, and after the vibration damper is added, the maximum value of the acceleration and the displacement of the top of the tower can be effectively reduced by 60% -70%; the stress value at the maximum stress position can be effectively reduced by about 70 percent, and the safe operation of the wind driven generator can be effectively ensured.
And (3) obtaining a proper mass ratio from the total mass of the tower barrel body 1 to obtain a tuning mass, carrying out modal analysis and determining the first-order natural frequency of the tower barrel body 1, obtaining the rigidity and the damping value of the steel wire rope vibration isolator 8 through the obtained first-order natural frequency and mass, and carrying out customized purchase on the steel wire rope vibration isolator 8 according to the parameter.
As a specific embodiment of the present invention, see fig. 1-8:
in this embodiment, the suspension rope 4 is a steel wire rope, and the suspension rope 4 is used in cooperation with the steel wire rope clip 14. The steel wire rope has high strength, is enough to support the vibration damper and has high reliability; in addition, the suspension rope 4 is used with the steel wire rope clip 14, so that the suspension rope 4 can be conveniently installed, and meanwhile, the suspension rope 4 cannot fall off.
In this embodiment, a suspension bolt 10 is horizontally disposed on the mounting bracket 3, one end of the suspension rope 4 is fixed to the suspension bolt 10, a gap exists between the suspension rope 4 and the mounting bracket 3, and elastic washers 11 are filled in the gaps at two sides of the suspension rope 4. The elastic washers 11 are filled in gaps on two sides of the suspension rope 4, and the position of the suspension rope 4 can be restrained by the elastic washers 11, so that the tail end of the suspension rope 4 cannot slide laterally, and meanwhile, the abrasion of the tail end of the suspension rope 4 can be reduced.
In this embodiment, a through hole is formed in the middle of the mass sheet 6, a through hole is also formed in the middle of the bottom plate 501 of the mass sheet mounting rack 5, the mass sheet 6 is placed on the bottom plate 501 of the mass sheet mounting rack 5, and the center lines of the through holes of the mass sheet 6 and the bottom plate 501 are overlapped; the through hole is internally provided with a bolt 12, the tail end of the bolt 12 is provided with a nut 13, and the mass sheet 6 is fixed on the mass sheet mounting frame 5 through the matching of the bolt 12 and the nut 13. When the number of the mass pieces 6 is required to be adjusted according to actual use conditions, the fastening structure of the bolt 12 and the nut 13 facilitates replacement and installation of the mass pieces 6.
In this embodiment, a set of fixing plates 502 are circumferentially mounted on the side surface of the mass plate mounting frame 5, and when the vibration damping device is mounted, the fixing plates 502 and the auxiliary mounting device 9 are matched with each other to play a supporting role; the auxiliary mounting device 9 comprises a mounting seat 901 and a connecting plate 902; when the vibration damper is installed, the installation base 901 is fixedly installed on the inner wall of the tower cylinder body 1, one end of the connecting plate 902 is detachably connected with the installation base 901, and the other end of the connecting plate 902 is detachably connected with the fixing plate 502; after the vibration damping device is installed, the attachment plate 902 is removed. The fixing plate 502 is connected with the mounting seat 901 through the connecting plate 902, so that the mass plate mounting frame 5 can be subjected to a load-bearing fixing effect, and the mounting of a suspension device and a damping device is facilitated.
In this embodiment, a distance sensor 15 is mounted on the wire rope vibration isolator 8. When the distance between the steel wire rope vibration isolator 8 and the spring support 7 is too close or too far, the alarm can give an alarm when a set value is reached, the displacement distance of the mass block is too large, and ground monitoring personnel should stop the wind motor to prevent loss.
In this embodiment, a protection device 16 is installed in the tower barrel 1, the protection device 16 includes a safety rope 1601, one end of the safety rope 1601 is fixed on the mounting bracket 3, the other end of the safety rope 1601 is fixed on the mass piece mounting bracket 5, and after the safety rope 1601 is installed, the safety rope 1601 is in a soft state. Under the condition that suspension rope 4 became invalid, the existence of safety rope 1601 can support quality piece mounting bracket 5, avoids its damage that drops and cause. Further, a protective net 17 is horizontally arranged on the inner wall of the tower cylinder body 1, and the protective net 17 is positioned below the mass piece mounting frame 5; after the safety rope 1601 is tightened, the quality piece mounting rack 5 connected with the safety rope 1601 does not collide with the protection net 17. The existence of protection network 17 can further ensure the security and the reliability of a wind turbine tower section of thick bamboo, can play the effect of accepting to the object that falls, avoids the object to drop the damage that causes. Further, infrared displacement sensors 18 are horizontally and uniformly installed on the inner wall of the tower barrel 1 in a surrounding manner, and the infrared displacement sensors 18 are located between the protective net 17 and the mass piece mounting frame 5. The infrared sensor 18 can monitor the displacement of an object, and when the object falls, the infrared ray is cut off, the alarm is triggered, and detection is facilitated.
The above general description of the invention and the description of the specific embodiments thereof, as referred to in this application, should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments (including the examples) to form other technical solutions within the protection scope of the present application according to the disclosure of the present application without departing from the structural elements of the present invention.
Claims (10)
1. Wind-resistant induced vibration's wind-driven generator tower section of thick bamboo, its characterized in that: the tower drum comprises a tower drum body (1), wherein a suspension device and a vibration damper are installed in the tower drum body (1), and flange plates (2) are arranged at the upper end and the lower end of the tower drum body (1); the suspension device comprises a mounting bracket (3) and a suspension rope (4), and the vibration damper comprises a mass sheet mounting rack (5) and a mass sheet (6); the mounting supports (3) are horizontally and uniformly arranged on the inner wall of the tower barrel (1) in a surrounding mode, each mounting support (3) is connected with a suspension rope (4), one end of each suspension rope (4) is fixed to the mounting support (3), one end of each suspension rope (4) is fixed to a mass sheet mounting frame (5), a mass sheet (6) is mounted in each mass sheet mounting frame (5), and each mass sheet mounting frame (5) and each mass sheet (6) form a mass block; the vibration damper further comprises spring supports (7) and wire rope vibration isolators (8), the spring supports (7) are horizontally and uniformly installed on the inner wall of the tower cylinder body (1) in a surrounding mode, the wire rope vibration isolators (8) are installed on the spring supports (7), one ends of the wire rope vibration isolators (8) are fixed on the spring supports (7), and the other ends of the wire rope vibration isolators (8) are fixed on the mass plate mounting frames (5); the center line of the mass piece mounting frame (5) after being mounted is overlapped with the center line of the tower cylinder body (1).
2. The wind-induced vibration resistant wind-powered generator tower of claim 1, wherein: the suspension rope (4) is a steel wire rope, and the suspension rope (4) is matched with a steel wire rope clamp (14) for use.
3. The wind-induced vibration resistant wind-powered generator tower of claim 1, wherein: the suspension bolt (10) is horizontally arranged on the mounting support (3), one end of the suspension rope (4) is fixed on the suspension bolt (10), a gap exists between the suspension rope (4) and the mounting support (3), and elastic washers (11) are filled in gaps on two sides of the suspension rope (4).
4. The wind-induced vibration resistant wind-powered generator tower of claim 1, wherein: a through hole is formed in the middle of the mass sheet (6), a through hole is also formed in the middle of the bottom plate (501) of the mass sheet mounting frame (5), the mass sheet (6) is placed on the bottom plate (501) of the mass sheet mounting frame (5), and the center lines of the through holes of the mass sheet (6) and the bottom plate (501) are overlapped; install bolt (12) in the through-hole, nut (13) are installed to the end of bolt (12), quality piece (6) are fixed on quality piece mounting bracket (5) through the cooperation of bolt (12) and nut (13).
5. The wind-induced vibration resistant wind-powered generator tower of claim 1, wherein: a group of fixing plates (502) are arranged on the side surface of the mass plate mounting frame (5) along the circumferential direction, and when the vibration damper is mounted, the fixing plates (502) are matched with the auxiliary mounting device (9) to play a supporting role;
the auxiliary mounting device (9) comprises a mounting seat (901) and a connecting plate (902); when the vibration damper is installed, the installation base (901) is fixedly installed on the inner wall of the tower cylinder body (1), one end of the connecting plate (902) is detachably connected with the installation base (901), and the other end of the connecting plate is detachably connected with the fixing plate (502); after the vibration damping device is installed, the connecting plate (902) is detached.
6. The wind-induced vibration resistant wind-powered generator tower of claim 1, wherein: and a distance sensor (15) is installed on the steel wire rope vibration isolator (8).
7. The wind-induced vibration resistant tower of any one of claims 1 to 6, wherein: install protection device (16) in tower cylinder barrel (1), protection device (16) include safety rope (1601), safety rope (1601) one end is fixed on installing support (3), the other one end of safety rope (1601) is fixed on quality piece mounting bracket (5), and after the installation, safety rope (1601) are in the flaccid state.
8. The wind-induced vibration resistant tower of any one of claims 7, wherein: a protective net (17) is horizontally arranged on the inner wall of the tower cylinder body (1), and the protective net (17) is positioned below the mass sheet mounting frame (5); after the safety rope (1601) is tightened, the quality piece mounting rack (5) connected with the safety rope (1601) cannot collide with the protective net (17).
9. The wind-induced vibration resistant tower of claim 8, wherein: the inner wall of the tower cylinder body (1) is horizontally and uniformly provided with infrared displacement sensors (18) in a surrounding mode, and the infrared displacement sensors (18) are located between the protective net (17) and the quality piece mounting frame (5).
10. The wind-resistant induced vibration method of the wind motor tower is characterized in that: the method is realized by arranging a suspension device and a vibration damper in a wind power tower (1); the upper end and the lower end of the tower barrel (1) are provided with flange plates (2); the suspension device comprises a mounting bracket (3) and a suspension rope (4), and the vibration damper comprises a mass sheet mounting rack (5) and a mass sheet (6); the mounting supports (3) are horizontally and uniformly arranged on the inner wall of the tower barrel (1) in a surrounding mode, each mounting support (3) is connected with a suspension rope (4), one end of each suspension rope (4) is fixed to the mounting support (3), one end of each suspension rope (4) is fixed to a mass sheet mounting frame (5), a mass sheet (6) is mounted in each mass sheet mounting frame (5), and each mass sheet mounting frame (5) and each mass sheet (6) form a mass block; the vibration damper further comprises spring supports (7) and wire rope vibration isolators (8), the spring supports (7) are horizontally and uniformly installed on the inner wall of the tower cylinder body (1) in a surrounding mode, the wire rope vibration isolators (8) are installed on the spring supports (7), one ends of the wire rope vibration isolators (8) are fixed on the spring supports (7), and the other ends of the wire rope vibration isolators (8) are fixed on the mass plate mounting frames (5); the center line of the mass piece mounting rack (5) after being mounted is superposed with the center line of the tower cylinder body (1);
the suspension ropes (4) of the suspension device are matched with each other to restrict the vertical motion of the mass block, so that the mass block can only move in the horizontal direction; when the tower barrel (1) is vibrated by wind induction during working, the mass block moves in the horizontal direction after being vibrated, so that the steel wire rope vibration isolator (8) of the vibration damper performs corresponding stretching and compressing motions, and the steel wire rope vibration isolator (8) provides rigidity and damping to perform energy consumption and vibration reduction; the main structure of the tower barrel is excited in any direction, the mass block is driven to move opposite to the main structure, and the vibration of the main structure is weakened through the effect of the vibration damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115665.1A CN114427516A (en) | 2022-02-07 | 2022-02-07 | Wind turbine tower barrel and method for resisting wind induced vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115665.1A CN114427516A (en) | 2022-02-07 | 2022-02-07 | Wind turbine tower barrel and method for resisting wind induced vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114427516A true CN114427516A (en) | 2022-05-03 |
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ID=81312459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210115665.1A Pending CN114427516A (en) | 2022-02-07 | 2022-02-07 | Wind turbine tower barrel and method for resisting wind induced vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114427516A (en) |
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2022
- 2022-02-07 CN CN202210115665.1A patent/CN114427516A/en active Pending
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