CN117345555B - Intelligent damping vibration attenuation system for offshore wind power - Google Patents
Intelligent damping vibration attenuation system for offshore wind power Download PDFInfo
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- CN117345555B CN117345555B CN202311487914.0A CN202311487914A CN117345555B CN 117345555 B CN117345555 B CN 117345555B CN 202311487914 A CN202311487914 A CN 202311487914A CN 117345555 B CN117345555 B CN 117345555B
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- 238000013016 damping Methods 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- 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
- 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
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to an offshore wind power intelligent damping vibration attenuation system, which is arranged in a fan tower, and mainly comprises an intelligent shell rail, a spherical mass block and a data acquisition and control module; the intelligent shell rail is hemispherical, and a spherical mass block is placed in the intelligent shell rail; the intelligent shell rail is of a three-layer structure, the upper layer is a piezoelectric composite material layer, the middle layer is an electromagnet layer, and the lower layer is a steel shell; the piezoelectric composite material layer and the electromagnet layer are uniformly divided into a plurality of subareas, each subarea is provided with a sensor, and the sensors are used for collecting electric signals generated by each subarea of the piezoelectric composite material layer in the vibration process and transmitting the electric signals to the data acquisition and control module, so that the positions of the spherical mass blocks are monitored in real time; the data acquisition and control module intelligently adjusts and controls the electromagnetic ferromagnetic field intensity in each partition of the electromagnet layer according to the position of the spherical mass block, and controls the movement amplitude of the spherical mass block. The invention further enhances the vibration reduction effect by intelligently regulating and controlling the work of the electromagnet layer in the shell rail.
Description
Technical Field
The invention relates to the technical field of vibration control, in particular to an offshore wind power intelligent damping vibration attenuation system.
Background
In order to achieve the aim of 'reaching peak and middle carbon', china greatly develops clean energy and continuously optimizes the energy structure. Among them, the clean energy source mainly using wind energy becomes a policy and a significant development trend. Wind energy development is now gradually proceeding from onshore to offshore and from offshore to deep open sea. In order to reduce the unit power cost, the wind turbine generator system is developed towards large scale, the fan blades are continuously prolonged, the tower is continuously increased, the fan blades with long and flexible characteristics and the high-rise fan tower are more outstanding in vibration problem under the action of severe marine environment, the safe and stable operation of the fan can be directly threatened, and the operation and maintenance cost of the wind power plant is remarkably increased. Therefore, there is an urgent need to solve these vibration problems to ensure safe and stable operation of the blower.
The tower is a component of the wind driven generator which bears the wind load and the vibration force for a long time, and is extremely easy to generate structural fatigue damage in a complex environment. Frequent vibration can cause fatigue accumulation of the material, leading to cracking, deformation or failure, and eventually may lead to structural collapse of the tower. In addition, vibrations can also adversely affect the mechanical equipment inside the fan. For example, components such as fan blades, bearings, generators, etc. are susceptible to wear, loosening or failure under the action of vibration, thereby affecting the performance and reliability of the fan. Meanwhile, noise and vibration diffusion can be generated when the fan tower tube vibrates, and interference and influence are caused to surrounding environment and personnel. Excessive tower vibration can cause the blower to be unstable as a whole, increasing the risk of overturning or collapsing, which can pose a threat to maintenance and operator safety as well as surrounding offshore facilities and vessels. Therefore, reducing fan tower vibration is critical to ensure safe operation of the fan, improve reliability, and extend life. Proper vibration reduction technology and structural design and periodic monitoring and maintenance are adopted, so that the damage of vibration to the fan tower can be effectively reduced.
At present, a common vibration damper adopted by an offshore wind turbine is single and is controlled passively, and vibration damping requirements cannot be well met in a complex marine environment. For example, patent (201921984977.6) discloses a suspended multidirectional composite tuned mass damper for a fan, as shown in fig. 5, comprising a flange plate 1', a hemispherical shell-type container device 2', a guy rope 3', a rubber friction damping layer and a rolling ball 4'; the flange plate 1' is arranged at the inner top of the tower barrel, and four inhaul cables 3' are arranged on the lower surface of the flange plate 1' at equal intervals; the hemispherical shell type container device 2' is formed by welding a hemispherical shell and a round steel plate, the hemispherical shell type container device 2' is arranged at the tail end of the zipper 3', and the tail end of the zipper 3' is fixedly welded with the round steel plate of the hemispherical shell type container device 2 '; the ball 4 'is placed in the hemispherical shell container means 2'. When the device is used, the whole body formed by the lower hemispherical shell type container and the built-in rolling ball swings within a certain swing amplitude range under the action of four inhaul cables. Then, the rolling ball in the hemispherical container rolls to form the multidirectional compound tuned mass damper. But above-mentioned multidirectional compound tuning mass damper adopts the cable to hang, and on the one hand swing in-process is easy to take place the striking with the tower section of thick bamboo, and on the other hand it is passive swing, can't carry out initiative intelligent control, and the damping effect is difficult to satisfy the demand.
Therefore, the invention is needed to provide an intelligent damping vibration attenuation system, which solves the problem of single control direction of the traditional vibration attenuation system and improves the adaptability of the fan vibration attenuation system to complex environments.
Disclosure of Invention
The invention provides an offshore wind power intelligent damping vibration reduction system, which solves the problems that the traditional system is single in vibration reduction direction and cannot be semi-actively controlled, a sensor on an intelligent shell rail records the motion trail of a mass block in real time, and transmits signal data to a data acquisition and control module for processing and analyzing to regulate and control the working state of an electromagnet, and the mass block is further blocked from moving by regulating and controlling the strength of an electromagnetic ferromagnetic field, so that the vibration reduction effect is enhanced.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an intelligent damping vibration attenuation system for offshore wind power is used for a fan tower and mainly comprises an intelligent shell rail, a spherical mass block and a data acquisition and control module; the intelligent shell rail is hemispherical, and a spherical mass block is arranged in the intelligent shell rail; the upper side surface of the intelligent shell rail is smooth enough so that the spherical mass block can freely roll in the intelligent shell rail in the vibration process; the intelligent shell rail is of a three-layer structure, the upper layer is a piezoelectric composite material layer, the middle layer is an electromagnet layer, and the lower layer is a steel shell; the piezoelectric composite material layer and the electromagnet layer are uniformly divided into a plurality of subareas, each subarea of the piezoelectric composite material layer is provided with a sensor, and the sensor is used for collecting electric signals generated by each subarea of the piezoelectric composite material layer in the vibration process and transmitting the electric signals to the data acquisition and control module so as to monitor the position of the spherical mass block in the intelligent shell rail in real time, and simultaneously monitor the strain rate of each subarea of the piezoelectric composite material layer in the vibration process so as to calculate the acceleration of the spherical mass block and further assist in monitoring the vibration condition of the fan; the data acquisition and control module intelligently adjusts and controls the electromagnetic ferromagnetic field intensity in each partition of the electromagnet layer according to the position of the spherical mass block, and controls the movement amplitude of the spherical mass block.
Further, the system also comprises an annular plate, a supporting truss, an annular beam and a bottom plate; the upper edge of the intelligent shell rail is provided with an annular plate, and the annular plate is used for being connected with the inner wall of the fan tower; the lower side of the intelligent shell rail is provided with a ring beam, the upper end of the supporting truss is connected with the intelligent shell rail through the ring beam, the lower end of the supporting truss is connected with a bottom plate, and the bottom plate is simultaneously used for being connected with the inner wall of the tower barrel; the data acquisition and control module is arranged on the annular plate.
Further, the reinforcing ribs are arranged along the center of the annular plate as a circle center and are sequentially arranged at intervals of 45 degrees; the triangular rib plates are arranged along the center of the bottom plate as the circle center, and are sequentially arranged at intervals of 45 degrees.
Furthermore, the annular plate and the bottom plate adopt a hollowed-out structure.
Further, an anti-collision baffle is further arranged on the upper edge of the intelligent shell rail, and the inclination angle of the anti-collision baffle is perpendicular to the upper edge of the intelligent shell rail; the anti-collision baffle surrounds the upper edge of the intelligent shell rail for avoiding the spherical mass block from separating from the intelligent shell rail.
Further, the spherical mass block material is any one or combination of iron, chromium and nickel and can be attracted by an electromagnet layer (32) in the intelligent shell rail.
Further, the surface of the spherical mass block is wrapped with an anti-friction composite material so as to reduce rolling damage.
Further, the weight of the spherical mass block is 2% -5% of the total weight of the fan.
A fan tower barrel provided with an offshore wind power intelligent damping vibration reduction system is provided with one or more offshore wind power intelligent damping vibration reduction systems.
Compared with the prior art, the invention has the following advantages and technical effects:
1. the spherical mass block can roll freely in the intelligent shell rail, the motion track of the spherical mass block is hemispherical shell-shaped, and vibration control in all directions can be realized through the free motion of the mass block.
2. The upper layer of the intelligent shell rail is made of the piezoelectric composite material and is uniformly divided into a plurality of subareas, the sensors are arranged in the subareas, electric signals generated when the spherical mass block rolls are transmitted to the data acquisition and control module, the system can intelligently sense the movement position and speed of the spherical mass block, the vibration condition of the fan can be judged, and a corresponding intelligent vibration control strategy can be provided.
3. The middle layer of the intelligent shell rail is an electromagnet layer, and the working state of the electromagnet can be controlled in real time according to data fed back by the sensor; when the movement amplitude of the mass block reaches a certain threshold, the electromagnet is intelligently started to regulate and control, so that the movement of the spherical mass block is blocked, and the vibration control effect can be further enhanced.
4. The intelligent shell rail is supported in the fan tower through the annular plate, the supporting truss, the annular beam and the bottom plate, and meanwhile, the spherical mass block is prevented from being separated from the intelligent shell rail through the anti-collision baffle. The installation and fixation are convenient, and the strength is high.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the overall structure of the present invention;
FIG. 3 is a schematic elevational cross-sectional view of the overall structure of the present invention;
FIG. 4 is a schematic cross-sectional view of a partial structure of the present invention;
fig. 5 is a schematic diagram of a prior art structure.
Marked in the figure as: 1. a fan tower; 2. an annular plate; 3. an intelligent shell rail; 4. a spherical mass; 5. an anti-collision baffle; 6. reinforcing ribs; 7. a support truss; 8. a ring beam; 9. a bottom plate; 10. triangular ribs; 11. a data acquisition and control module; 31. a piezoelectric composite layer; 32. an electromagnet layer; 33. a steel housing; 34. partitioning; 35 sensor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the offshore wind power intelligent damping vibration attenuation system is arranged in a fan tower 1 and mainly comprises an annular plate 2, an intelligent shell rail 3, a spherical mass block 4, a support truss 7, an annular beam 8, a bottom plate 9 and a data acquisition and control module 11. The fan tower 1 is formed by welding steel plates and is a cylindrical supporting and protecting structure. The intelligent damping vibration reduction system is arranged at the position of the fan tower 1 close to the top, so that the intelligent damping vibration reduction system generates optimal vibration restoring force and damping force, and the vibration reduction effect is optimal.
The intelligent shell rail 3 is hemispherical, and the spherical mass block 4 is placed in the hemispherical inner space of the intelligent shell rail 3 and can freely roll in the intelligent shell rail 3. The upper surface of the intelligent housing rail 3 is smooth enough so that the spherical mass 4 can roll freely through 360 degrees during vibration.
The surface of the spherical mass block 4 can be wrapped with anti-friction composite materials according to the requirement to reduce rolling damage. The weight of the spherical mass block 4 is preferably 2% -5% of the total weight of the fan, and the control effect is optimal.
The upper edge of the intelligent shell rail 3 is connected with the inner wall of the fan tower 1 through an annular plate 2, the annular plate 2 is welded with the upper edge of the intelligent shell rail 3, and the annular plate 2 is welded with the inner wall of the fan tower 1. The annular plate 2 is provided with a data acquisition and control module 11, and the data acquisition and control module 11 is placed in the steel frame and is welded with the annular plate 2.
The lower side of the intelligent shell rail 3 is connected with the inner wall of the tower 1 through a ring beam 8, a supporting truss 7 and a bottom plate 9. The downside of intelligent shell rail 3 sets up ring beam 8, the upper end of supporting truss 7 is through ring beam 8 and intelligent shell rail 3 meet, and the local overstress between supporting truss 7 and the intelligent shell rail 3 can be avoided in the setting of ring beam 8. The lower extreme of support truss 7 meets with bottom plate 9, and bottom plate 9 is arranged along fan tower 1 inner wall annular, all adopts welded connection between bottom plate 9 and the support truss 7, bottom plate 9 and with the inner wall of fan tower 1 between.
Preferably, the upper edge of the intelligent shell rail 3 is also provided with an anti-collision baffle 5, and the anti-collision baffle 5 is annularly arranged along the upper edge of the intelligent shell rail 3 and is welded with the upper edge of the intelligent shell rail 3. The anti-collision baffle 5 can limit the movement of the spherical mass block 4 to the inside of the intelligent shell rail 3, so that the spherical mass block 4 is prevented from rolling out of the intelligent shell rail 3. The anti-collision baffle 5 is preferably vertical to the upper edge of the intelligent shell rail 3 in inclination angle, and the strength of the anti-collision baffle meets the anti-collision requirement of the system.
As shown in fig. 2, the annular plate 2 and the bottom plate 9 preferably adopt hollow structures so as to facilitate wiring or reserving use spaces of a generator, an inverter, a yaw system, a gear box, a hydraulic system, a mechanical brake system and the like in the blower tower 1.
As shown in fig. 1 and 3, the reinforcing ribs 6 may be provided under the annular plate 2 as required to secure structural strength, the reinforcing ribs 6 being arranged to be disposed one at every 45 ° angle along the center of the annular plate. Also, triangular ribs 10 may be arranged on the lower side of the base plate 9 according to the need in order to secure structural strength, and the triangular ribs 10 are arranged to be arranged one at every 45 ° angle along the center of the base plate as a center.
As shown in fig. 3, the intelligent shell rail 3 in the invention has a three-layer structure, wherein the upper layer is a piezoelectric composite material layer 31, the middle layer is an electromagnet layer 32, and the lower layer is a steel shell 33. The surface of the piezoelectric composite material layer 31 is smooth so as to ensure that the spherical mass block 4 can freely roll without obstruction in the vibration process of the fan. The lower side of the steel shell 33 is welded with the ring beam 8, and the strength of the steel shell can ensure the stable operation of the whole system.
As shown in fig. 4, the piezoelectric composite layer 31 and the electromagnet layer 32 of the intelligent housing rail 3 are uniformly divided into a plurality of partitions 34, the density of the partitions 34 is set according to the accuracy actually required for the position monitoring of the spherical mass, the partitions are encrypted as the accuracy actually required for the position monitoring of the spherical mass increases, and the respective partitions are encoded. A sensor 35 is provided inside each partition of the piezoelectric composite layer 31. The electromagnet layer 32 and the sensor 35 are both in signal connection with the data acquisition and control module 11.
The spherical mass block 4 can freely roll in the vibration process of the fan to extrude the piezoelectric composite material layer 31 to generate electric signals, and the sensor 35 is responsible for collecting the electric signals generated by each partition 34 of the piezoelectric composite material layer in the vibration process and transmitting the electric signals to the data acquisition and control module 11 so as to monitor the position of the spherical mass block 4 in the intelligent shell rail 3 in real time, and simultaneously monitor the strain rate of each partition of the piezoelectric composite material layer 31 in the vibration process to calculate the acceleration of the spherical mass block 4, thereby assisting in monitoring the vibration condition of the fan. The magnetic field intensity of the electromagnets in each partition in the electromagnet layer 32 is intelligently controlled by the data acquisition and control module 11, and the movement of the spherical mass block can be blocked by controlling the magnetic field intensity of each partition in the electromagnet layer 32.
The spherical mass block 4 is made of any one of metal materials such as iron, chromium and nickel, so that the spherical mass block 4 can be attracted by the electromagnet in the intelligent shell rail 3.
The working principle of the invention is as follows: when the wind turbine tower 1 vibrates, the offshore wind power intelligent damping vibration reduction system starts to work, the spherical mass block 4 rolls in the intelligent shell rail 3 in a reverse direction relative to the vibration direction of the wind turbine tower, and the horizontal component force of the spherical mass block on the pressure of the intelligent shell rail 3 provides restoring force and damping force for the wind turbine tower 1. As the spherical mass 4 rolls on the respective sections 34 of the smart rail 3, the spherical mass 4 presses against the piezoelectric composite layer 31 to generate a current, and the sensor 35 collects the current signal generated by the movement of the spherical mass 4 and transmits it to the data acquisition and control module 11. The data acquisition and control module 11 analyzes the data acquired by the sensor 35 in real time to monitor the movement position of the spherical mass block 4, and further assists in monitoring the movement posture of the fan tower. The data acquisition and control module 11 analyzes the movement position of the spherical mass block 4, and when the movement amplitude of the spherical mass block 4 reaches a certain threshold value, the data acquisition and control module 11 outputs a signal to regulate and control the magnetic field intensity of the subareas 34 in the electromagnet layer 32 inside the intelligent shell rail 3 so as to block the movement of the spherical mass block 4 and enhance the vibration reduction effect of the intelligent damping vibration reduction system.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any other way, but is intended to cover any modifications or equivalent variations according to the technical spirit of the present invention, which fall within the scope of the present invention as defined by the appended claims.
Claims (9)
1. An offshore wind power intelligent damping vibration attenuation system is used for a fan tower (1) and mainly comprises an intelligent shell rail (3), a spherical mass block (4) and a data acquisition and control module (11);
the intelligent shell rail (3) is hemispherical, and a spherical mass block (4) is arranged in the intelligent shell rail (3); the upper side surface of the intelligent shell rail (3) is smooth enough so that the spherical mass block (4) can freely roll in the intelligent shell rail (3) in the vibration process;
the method is characterized in that: the intelligent shell rail (3) is of a three-layer structure, the upper layer is a piezoelectric composite material layer (31), the middle layer is an electromagnet layer (32), and the lower layer is a steel shell (33); the spherical mass block (4) is made of any one or combination of iron, chromium and nickel, and can be attracted by the electromagnet layer (32) in the intelligent shell rail (3); the piezoelectric composite material layer (31) and the electromagnet layer (32) are uniformly divided into a plurality of subareas (34), each subarea of the piezoelectric composite material layer (31) is provided with a sensor (35), the sensors (35) are used for collecting electric signals generated by each subarea of the piezoelectric composite material layer (31) in the vibration process and transmitting the electric signals to the data acquisition and control module (11) so as to monitor the position of the spherical mass block (4) in the intelligent shell rail (3) in real time, and simultaneously monitor the strain rate of each subarea of the piezoelectric composite material layer (31) in the vibration process so as to calculate the acceleration of the spherical mass block, thereby assisting in monitoring the vibration condition of the fan; the data acquisition and control module (11) intelligently adjusts and controls the electromagnetic ferromagnetic field intensity in each partition of the electromagnet layer (32) according to the position of the spherical mass block (4) and controls the movement amplitude of the spherical mass block (4).
2. An offshore wind power intelligent damping vibration attenuation system according to claim 1, wherein: the system also comprises an annular plate (2), a supporting truss (7), an annular beam (8) and a bottom plate (9); an annular plate (2) is arranged on the upper edge of the intelligent shell rail (3), and the annular plate (2) is connected with the inner wall of the fan tower (1); the lower side of the intelligent shell rail (3) is provided with a ring beam (8), the upper end of the supporting truss (7) is connected with the intelligent shell rail (3) through the ring beam (8), the lower end of the supporting truss (7) is connected with a bottom plate (9), and the bottom plate (9) is simultaneously connected with the inner wall of the tower (1); the data acquisition and control module (11) is arranged on the annular plate (2).
3. An offshore wind power intelligent damping vibration attenuation system according to claim 2, wherein: the annular plate (2) downside is provided with stiffening rib (6), bottom plate (9) downside is provided with triangular ribbed plate (10), in order to guarantee annular plate (2) with joint strength between bottom plate (9) and fan tower section of thick bamboo (1) inner wall.
4. An offshore wind power intelligent damping vibration attenuation system according to claim 3, wherein: the reinforcing ribs (6) are sequentially arranged at intervals of 45 degrees along the center of the annular plate (2) as the circle center; the triangular rib plates (10) are sequentially arranged at intervals of 45 degrees along the center of the bottom plate (9) as the circle center.
5. The offshore wind power intelligent damping vibration attenuation system according to any one of claims 2-4, wherein: the annular plate (2) and the bottom plate (9) adopt hollow structures.
6. The offshore wind power intelligent damping vibration attenuation system according to any one of claims 1-4, wherein: an anti-collision baffle (5) is further arranged on the upper edge of the intelligent shell rail (3), and the inclination angle of the anti-collision baffle (5) is perpendicular to the upper edge of the intelligent shell rail (3); the anti-collision baffle (5) surrounds the upper edge of the intelligent shell rail (3) for avoiding the separation of the spherical mass block (4) from the intelligent shell rail (3).
7. An offshore wind power intelligent damping vibration attenuation system according to claim 1, wherein: the surface of the spherical mass block (4) is wrapped with an anti-friction composite material so as to reduce rolling damage.
8. An offshore wind power intelligent damping vibration attenuation system according to claim 1, wherein: the weight of the spherical mass block (4) is 2% -5% of the total weight of the fan.
9. A wind turbine tower (1) fitted with an offshore wind power intelligent damping vibration attenuation system according to claim 1, characterized in that: one or more intelligent damping vibration attenuation systems for offshore wind power are arranged in the fan tower (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311487914.0A CN117345555B (en) | 2023-11-09 | 2023-11-09 | Intelligent damping vibration attenuation system for offshore wind power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311487914.0A CN117345555B (en) | 2023-11-09 | 2023-11-09 | Intelligent damping vibration attenuation system for offshore wind power |
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| CN117345555A CN117345555A (en) | 2024-01-05 |
| CN117345555B true CN117345555B (en) | 2024-03-19 |
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| CN202311487914.0A Active CN117345555B (en) | 2023-11-09 | 2023-11-09 | Intelligent damping vibration attenuation system for offshore wind power |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0590478A2 (en) * | 1992-09-26 | 1994-04-06 | Fumio Nakajima | Inclination/vibration detecting switch |
| JPH08273504A (en) * | 1995-03-29 | 1996-10-18 | Ubukata Seisakusho:Kk | Acceleration reacting switch |
| CN106094012A (en) * | 2016-07-22 | 2016-11-09 | 成都秦川科技发展有限公司 | Seismic sensor for intelligent gas meter |
| CN107061599A (en) * | 2017-06-06 | 2017-08-18 | 广东电网有限责任公司电力科学研究院 | A kind of ball-type current vortex omnidirectional damping unit |
| CN110965837A (en) * | 2019-12-24 | 2020-04-07 | 河北工业大学 | Tuning type magnetic liquid rolling ball damper |
| CN111255105A (en) * | 2020-01-19 | 2020-06-09 | 山东大学 | Multidimensional electromagnetic intelligent vibration damper |
| CN113279908A (en) * | 2021-05-26 | 2021-08-20 | 大连理工大学 | Movable damper system suitable for offshore wind turbine generator and working method |
| CN115479099A (en) * | 2021-05-31 | 2022-12-16 | 江苏金风科技有限公司 | Damper, blade for wind generating set and wind generating set |
-
2023
- 2023-11-09 CN CN202311487914.0A patent/CN117345555B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0590478A2 (en) * | 1992-09-26 | 1994-04-06 | Fumio Nakajima | Inclination/vibration detecting switch |
| JPH08273504A (en) * | 1995-03-29 | 1996-10-18 | Ubukata Seisakusho:Kk | Acceleration reacting switch |
| CN106094012A (en) * | 2016-07-22 | 2016-11-09 | 成都秦川科技发展有限公司 | Seismic sensor for intelligent gas meter |
| CN107061599A (en) * | 2017-06-06 | 2017-08-18 | 广东电网有限责任公司电力科学研究院 | A kind of ball-type current vortex omnidirectional damping unit |
| CN110965837A (en) * | 2019-12-24 | 2020-04-07 | 河北工业大学 | Tuning type magnetic liquid rolling ball damper |
| CN111255105A (en) * | 2020-01-19 | 2020-06-09 | 山东大学 | Multidimensional electromagnetic intelligent vibration damper |
| CN113279908A (en) * | 2021-05-26 | 2021-08-20 | 大连理工大学 | Movable damper system suitable for offshore wind turbine generator and working method |
| CN115479099A (en) * | 2021-05-31 | 2022-12-16 | 江苏金风科技有限公司 | Damper, blade for wind generating set and wind generating set |
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| CN117345555A (en) | 2024-01-05 |
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