CN116696664A - Intelligent air bag vortex vibration control system and method for fan tower barrel - Google Patents
Intelligent air bag vortex vibration control system and method for fan tower barrel Download PDFInfo
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- CN116696664A CN116696664A CN202310666454.1A CN202310666454A CN116696664A CN 116696664 A CN116696664 A CN 116696664A CN 202310666454 A CN202310666454 A CN 202310666454A CN 116696664 A CN116696664 A CN 116696664A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000012806 monitoring device Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The application discloses a fan tower intelligent air bag vortex-vibration control system and a method, wherein the system comprises a monitoring system, an intelligent control system and a plurality of air bag systems which are arranged in an array along the height direction of a tower, and the air bag systems are arranged in a surrounding manner along the radial direction of the tower; the monitoring system comprises a plurality of monitoring devices which are arranged in one-to-one correspondence with the air bag systems, and the monitoring devices detect wind speed, wind direction, vibration state or other environmental parameters of the tower; the intelligent control system is connected with the detection system, and calculates section shape parameters of each air bag system according to vortex vibration orders determined by monitoring data of the monitoring system and finite element simulation, and controls each air bag system to be transformed into a corresponding section shape so as to destroy the spread correlation of the wind field on the surface of the tower along the height direction of the tower.
Description
Technical Field
The application relates to the technical field of vibration control of high-rise structures, in particular to an intelligent air bag vortex-vibration control system for a fan tower, and further relates to an intelligent air bag vortex-vibration control method for the fan tower.
Background
Wind energy is the fastest growing clean energy among renewable energy sources, and is also the power generation mode with the largest development and commercialization development prospects. At present, the offshore wind turbine with the largest global single machine power and the largest wind wheel diameter in the prior art is the offshore wind turbine of China with the H260-18MW, the wind wheel diameter of the offshore wind turbine reaches 260 meters, and the tower drum is about 200 meters. The tower drum which is used as a main supporting structure form of the fan also becomes higher and softer, so that vortex-induced vibration is very easy to occur under the action of loads such as wind, waves and the like, and the structural fatigue and even safety of the fan are threatened. The problem of vortex vibration control of a fan tower is one of key problems to be solved in the development of large fans. Aiming at the problem of tower vortex vibration, the traditional method usually adopts the method of increasing the section size of the tower and improving the rigidity. However, the excessively large tower barrel structure greatly increases the construction cost of manufacture, transportation, hoisting and the like, and reduces the cost advantage of the large fan.
Therefore, the intelligent air bag vortex-induced vibration control system for the wind turbine tower drum, which can timely adjust the aerodynamic shape of the wind turbine tower drum according to wind speeds, wind directions and vibration states of the wind turbine tower drum at different heights, is provided, and the intelligent air bag vortex-induced vibration control method for the wind turbine tower drum is further provided.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a fan tower intelligent air bag vortex-vibration control system capable of timely adjusting the pneumatic appearance of a tower according to wind speeds and wind directions at different heights and vibration states of the tower, and further provides a fan tower intelligent air bag vortex-vibration control method, so that the spanwise correlation along the height direction of the tower is broken, periodic vortex shedding of the tower is avoided, vortex-induced vibration of the tower is restrained, and fatigue damage of the tower due to vortex-induced vibration is reduced.
Firstly, the application provides an intelligent air bag vortex-vibration control system of a fan tower, which comprises a monitoring system, an intelligent control system and a plurality of air bag systems, wherein the air bag systems are arranged in an array along the height direction of the tower, and the air bag systems are arranged in a surrounding manner along the radial direction of the tower;
the monitoring system comprises a plurality of monitoring devices which are arranged in one-to-one correspondence with the air bag systems, and the monitoring devices detect the wind speed, wind direction, vibration state or other environmental parameters of the tower;
the intelligent control system is connected with the detection system, determines the vortex vibration order of the tower according to the monitoring data of the monitoring system and the finite element simulation, calculates the section shape parameters of each air bag system according to the vortex vibration order, and controls each air bag system to be transformed into a corresponding section shape so as to destroy the direction-expanding correlation of the wind field on the surface of the tower along the height direction of the tower.
Further, the airbag system includes an airbag, an airbag base, an inflation sensor, and an inflation device; the air bag is connected with the air bag base to form an air inflation cavity, and the air bag base is fixedly connected with the tower barrel through welding or bolt connection or rivet connection or other connection modes; the air charging device is communicated with the air charging cavity through an air charging and discharging pipe and charges/discharges air, and when the air charging sensor detects that the pressure in the air charging cavity reaches a corresponding value, the air charging device stops charging/discharging air, and the air charging cavity is inflated/discharged to form an air bag structure with a corresponding section shape.
Further, the air charging device is arranged in the tower through welding or bolting or riveting or other connecting modes.
Further, the cross-sectional shape of the air bag system is semi-ellipsoidal, circular, triangular, sawtooth or other structural forms, and the cross-sectional shape is determined according to CFD simulation before installation.
Further, the monitoring device comprises a wind speed and direction sensor and a vibration state sensor; the wind speed and direction sensor monitors incoming wind speed and wind direction at corresponding positions of the tower at different heights; the vibration state sensors monitor vibration states of corresponding positions of the tower at different heights.
Further, the intelligent control system comprises a control workstation arranged in a bottom working bin of the tower, and the control workstation is connected with the monitoring system and the air bag system through data transmission lines arranged in the tower.
Secondly, the application also provides a method for controlling vortex vibration of the intelligent air bag of the fan tower, which comprises the following steps:
s1, monitoring real-time wind speeds, wind directions and vibration states of different height positions of a fan tower;
s2, judging whether the real-time wind speed is in a vortex vibration wind speed interval of a fan tower; if not, the intelligent control system does not output signals, and the air bag system is in a non-working state; if yes, go to S3;
s3, the intelligent control system determines vortex vibration orders according to real-time wind speeds, wind directions, real-time vibration states at different heights of the tower and finite element models of the tower;
s4, determining a section shape control parameter of an air bag system required by the current vortex-induced vibration order of the tower;
s5, inflating the air bag system to form an air bag structure with a corresponding section shape;
s6, continuously monitoring the vibration state of the tower, and determining whether the tower returns to the normal vibration state; if not, jumping to S3; if so, jump to S1.
The technical scheme of the application has the following advantages:
in the application, the air bag system of the intelligent air bag vortex vibration control system of the fan tower is arranged in an array along the height direction of the tower and is arranged in a surrounding manner along the radial direction of the tower, namely the air bag system is arranged in a fitting manner according to the structural characteristics of the tower; meanwhile, each air bag system is provided with a monitoring device which is correspondingly arranged, the intelligent control system independently adjusts each air bag according to specific monitoring conditions, and the surface wind fields at different height positions are efficiently changed by controlling and changing (inflating or deflating) the air bag shapes at different heights, so that the spread correlation along the height direction of the tower is damaged, periodic vortex shedding is avoided, and vortex vibration of the tower is effectively inhibited.
That is, the application aims at the characteristics of high cylindrical structure and unequal vertical wind speed of the tower drum of the fan, radial encircling air bag structures are arranged in the height direction of the tower drum, the suppression of the vortex-induced vibration of the tower drum is realized by changing the shape of the air bag structure covered on the outer surface of the tower drum, the fatigue damage of the tower drum caused by the vortex-induced vibration is reduced, and the integral wind resistance stability of the tower drum is improved under the conditions of not changing the self structure of the tower drum and not increasing the power generation cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a vortex-induced vibration control system of an intelligent air bag of a tower of a fan;
FIG. 2 is a schematic view of the air bag system of the present application in a non-operative state (a) and an operative state (b);
FIG. 3 is a schematic diagram of the connection between the intelligent air bag vortex-induced vibration control system of the fan tower and the tower;
FIG. 4 is a schematic view of the cross-sectional shape parameters of an airbag according to the present application;
FIG. 5 is a graph showing time course comparison of tower top displacement of a wind turbine tower intelligent air bag vortex vibration control system according to the present application;
FIG. 6 is a graph comparing tower wake vorticity of a blower tower intelligent air bag vortex vibration control system with/without the present application;
FIG. 7 is a logic diagram of a method for controlling vortex and vibration of an intelligent air bag of a tower of a fan;
reference numerals:
a tower drum-1; a cylinder body-100; a tower separator-101; a man-passing channel-102; an airbag system-2; an air bag-200; an inflation sensor-201; an inflator-202; control workstation-300; a vibration state sensor-301; wind speed and direction sensor-302.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. The following is merely illustrative and explanatory of the principles of the application, as it would be apparent to those skilled in this art that various modifications or additions may be made to the specific embodiments described or in a similar manner without departing from the principles of the application or beyond the scope of the claims. The experimental reagents, materials, etc. used in the examples described below are commercially available unless otherwise specified.
Example 1
As shown in fig. 1 and 2, the embodiment provides an intelligent air bag vortex-vibration control system of a tower drum of a fan, which comprises a monitoring system and an intelligent control system, and further comprises a plurality of air bag systems 2 arranged in an array along the height direction of the tower drum 1, wherein the air bag systems 2 are arranged in a radial encircling manner along the tower drum 1;
the monitoring system comprises a plurality of monitoring devices which are arranged in one-to-one correspondence with the air bag systems 2, and the monitoring devices detect the wind speed, wind direction, vibration state or other environmental parameters of the tower 1;
the intelligent control system is connected with the detection system, determines the vortex vibration order of the tower 1 according to the monitoring data of the monitoring system and finite element simulation, has a corresponding relation with the position of the air bag 200 to be adjusted, is preset and stored in the intelligent control system, calculates the section shape parameters of each air bag system 2 according to the vortex vibration order, and controls each air bag system 2 to be transformed into a corresponding section shape so as to destroy the direction-expanding correlation of the wind field on the surface of the tower 1 along the height direction of the tower 1.
Specifically, the intelligent control system judges whether the tower 1 reaches a vortex vibration wind speed interval according to the monitoring data of the monitoring device, and further determines whether the airbag system 2 needs to be opened to inhibit vortex vibration of the tower 1; the vortex vibration wind speed interval is determined through wind tunnel test/CFD simulation, a finite element model is built in the intelligent control system, the finite element model is modeled and debugged in advance and stored in the system, the vortex vibration wind speed interval is used as a control parameter to be stored in the intelligent control system, and when the wind speed near the tower 1 reaches the vortex vibration wind speed interval, the intelligent control system calculates the vortex vibration order of the tower 1 according to the real-time wind speed direction, the vibration state of the tower 1 and the finite element model built in advance, so that the air bag system 2 is controlled and regulated.
In this embodiment, the air bag systems 2 are arranged in an array along the height direction of the tower 1 and are arranged in a surrounding manner along the radial direction of the tower 1, that is to say, the air bag systems 2 are arranged in a fitting manner according to the structural characteristics of the tower 1; meanwhile, each air bag system 2 is provided with a monitoring device which is correspondingly arranged, the intelligent control system independently adjusts each air bag 200 according to specific monitoring conditions, and the surface wind fields at different height positions are efficiently changed by controlling and changing (inflating or deflating) the shapes of the air bags 200 at different heights, so that the spanwise correlation along the height direction of the tower 1 is damaged, periodic vortex shedding is avoided, and vortex vibration of the tower 1 is effectively inhibited.
That is, according to the characteristics of high cylindrical structure and unequal vertical wind speed of the tower 1 of the fan, the radial encircling air bag 200 structure is arranged in the height direction of the tower 1, the vortex-induced vibration of the tower 1 is restrained by changing the structural shape of the air bag 200 covered on the outer surface of the tower 1, the fatigue damage of the tower 1 caused by the vortex-induced vibration is reduced, and the overall wind resistance stability of the tower 1 is improved under the conditions that the self structure of the tower 1 is not changed and the power generation cost is not increased.
Further, the monitoring device comprises a wind speed and direction sensor 302 and a vibration state sensor 301; the wind speed and direction sensor 302 monitors the incoming wind speed and wind direction at the corresponding position of the tower 1 at different heights; the vibration state sensors 301 monitor the vibration states at the corresponding positions of the tower 1 at different heights. Meanwhile, the intelligent control system comprises a control workstation 300 arranged in a bottom working bin of the tower 1 so as to facilitate subsequent overhaul; for aesthetic purposes, the control station 300 is connected to the monitoring system and to the airbag system 2 via a data transmission line arranged inside the tower 1. I.e. each airbag system 2 corresponds to a monitoring device; the shape of each airbag system 2 is individually controlled by a control workstation 300. The air bag system 2 is transformed into corresponding shapes according to the wind speed, the wind direction and the vibration state of the tower 1 at the position of the air bag system, can efficiently disturb an incoming wind field, and provides a convenient and efficient control means for the multi-order vortex vibration control of the tower 1.
As a preferred embodiment, the airbag system 2 includes an airbag 200, an airbag base, an inflation sensor 201, and an inflator 202; the air bag 200 is connected with the air bag base to form an air inflation cavity, and the air bag base is fixedly connected with the tower 1 through welding or bolt connection or rivet connection or other connection modes, namely is fixedly connected with the cylinder 100 of the tower 1, as shown in fig. 3; the inflator 202 is communicated with the inflation cavity through an inflation/deflation pipe, and inflates/deflates, when the inflation sensor 201 detects that the pressure in the inflation cavity reaches a corresponding value, the inflator 202 stops inflating/deflating, and the inflation cavity inflates/deflates to form an airbag 200 structure with a corresponding section shape. Further, the air charging device 202 is disposed on the tower separator 101 in the tower 1 by welding, bolting, riveting or other connection, and the tower 1 is further reserved with a passer-by channel 102, so as to facilitate subsequent maintenance or repair.
It should be noted that, as shown in fig. 2, when the air bag system 2 is in the inactive state, the air bag 200 is in the contracted state, so as to avoid causing a large disturbance to the air flow near the tower 1; when the real-time wind speed reaches the vortex vibration interval, the intelligent control system controls the air charging device 202 to charge air into the air charging cavity through the air charging and discharging pipe, and the air bag 200 is inflated, so that the surface wind field is effectively disturbed, the spanwise correlation along the height direction of the tower 1 is destroyed, the periodical vortex shedding is avoided, and the vortex vibration of the tower 1 is inhibited.
Further, as shown in fig. 4, the cross-sectional shape of the airbag system 2 is a semi-ellipsoidal shape, and the cross-sectional shape is determined from CFD simulation before installation. In this embodiment, the intelligent control system inflates or deflates the airbag 200 through the inflator 202 to adjust the cross-sectional shape of the airbag system 2. That is, the present embodiment can control the degree of inflation of the bladder 200 by controlling the inflator 202 to inflate the bladder 200, i.e., by controlling the pressure within the bladder 200; on the other hand, the section shape parameters can be controlled or adjusted to change the section form of the corresponding air bag 200. When the inflation sensor 201 detects that the pressure in the bladder 200 reaches a corresponding value, the inflation device 202 stops inflation, and the bladder 200 forms a corresponding cross-sectional shape. At this time, the air bag 200 has a certain rigidity, and the air bag 200 does not cause a safety problem because the wind load of the tower 1 is increased due to the excessive deformation of the air bag.
In the present embodiment, a semi-elliptical cross-sectional shape is taken as an example, and two control parameters of the semi-ellipse are the length of the major axis of the ellipseAnd short half shaft length->Its flatness->First eccentricity->Second eccentricity ∈>The length of the long half shaft and the length of the short half shaft can be deduced according to the following formula:
；
in this embodiment, the shape parameters of the air bag system 2 are further calculated and determined by specifically combining with the geometric dimension parameters of the tower 1, and in this embodiment, by taking the NREL-5MW fan tower as an example, through CFD numerical simulation, an example table of the relationship between the vortex-induced vibration wind speed and the shape parameters of the air bag system 2 as shown in the following table 1 is obtained. In the present embodiment the wind speed profile is determined according to a 3-order exponential law, i.e；
Wherein, the liquid crystal display device comprises a liquid crystal display device,for average wind speed>For height from ground->Is the height of the tower, 87.6m, & lt/EN & gt>Is->The average wind speed at the height is 25m/s.
TABLE 1 vortex-induced vibration wind speed and air bag system shape parameter relationship table
In this embodiment, further explaining by taking an NREL-5MW fan tower as a typical case, under the condition of the intelligent air bag vortex-vibration control system of the fan tower, numerical simulation is performed on the vibration state of the tower 1, and the time course of the top displacement of the tower 1 is observed, wherein a time course comparison chart is shown in fig. 5; flow field vorticity comparison diagrams of the intelligent air bag vortex vibration control system with/without the fan tower barrel are shown in figure 6; compared with the prior art, the intelligent air bag vortex vibration control system for the wind turbine tower drum can obviously inhibit vortex shedding in the wake area of the tower drum 1, so that the vortex vibration response of the tower drum 1 is reduced.
Example 2
As shown in fig. 7, on the basis of embodiment 1, this embodiment further provides a method for controlling vortex-induced vibration of an intelligent air bag of a tower of a fan, which includes the following steps:
s1, monitoring real-time wind speeds, wind directions and vibration states of different height positions of a fan tower 1;
s2, judging whether the real-time wind speed is in a vortex vibration wind speed interval of the fan tower 1; if not, the intelligent control system does not output a signal, and the air bag system 2 is in a non-working state; if yes, go to S3;
s3, the intelligent control system determines vortex vibration orders according to real-time wind speeds, wind directions, real-time vibration states at different heights of the tower 1 and finite element models of the tower 1;
s4, determining a section shape control parameter of the air bag system 2 required by the current vortex vibration order of the tower 1;
s5, inflating the air bag system 2 to form an air bag 200 structure with a corresponding section shape;
s6, continuously monitoring the vibration state of the tower 1, and determining whether the tower 1 returns to the normal vibration state; if not, jumping to S3; if so, jump to S1.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the application.
Claims (7)
1. The intelligent air bag vortex-vibration control system of the tower drum of the fan comprises a monitoring system and an intelligent control system and is characterized by further comprising a plurality of air bag systems (2) which are arranged in an array along the height direction of the tower drum (1), wherein the air bag systems (2) are arranged in a radial encircling manner along the tower drum (1);
the monitoring system comprises a plurality of monitoring devices which are arranged in one-to-one correspondence with the air bag systems (2), and the monitoring devices detect the wind speed, wind direction, vibration state or other environmental parameters of the tower (1);
the intelligent control system is connected with the detection system, determines vortex vibration orders of the tower (1) according to monitoring data of the monitoring system and finite element simulation, calculates section shape parameters of each air bag system (2) according to the vortex vibration orders, and controls each air bag system (2) to be transformed into a corresponding section shape so as to destroy the direction-spreading correlation of wind fields on the surface of the tower (1) along the height direction of the tower (1).
2. The intelligent air bag vortex-induced vibration control system of a wind turbine tower according to claim 1, wherein the air bag system (2) comprises an air bag (200), an air bag base, an air inflation sensor (201) and an air inflation device (202); the air bag (200) is connected with the air bag base to form an air inflation cavity, and the air bag base is fixedly connected with the tower (1) through welding or bolt connection or rivet connection or other connection modes; the inflation device (202) is communicated with the inflation cavity through an inflation and deflation pipe and is inflated/deflated, and when the inflation sensor (201) detects that the pressure in the inflation cavity reaches a corresponding value, the inflation device (202) stops inflation/deflation, and the inflation cavity is inflated/deflated to form an airbag structure with a corresponding section shape.
3. The intelligent air bag vortex-induced vibration control system of the fan tower according to claim 2, wherein the air charging device (202) is arranged in the tower (1) through welding or bolting or riveting or other connection modes.
4. The intelligent air bag vortex-induced vibration control system of the fan tower according to claim 2, wherein the cross-sectional shape of the air bag system (2) is a semi-ellipsoidal shape, a circular ring shape, a triangular ring shape, a sawtooth ring shape or other structural forms, and the cross-sectional shape is determined according to CFD simulation before installation.
5. The intelligent air bag vortex vibration control system of the fan tower according to claim 1, wherein the monitoring device comprises a wind speed and direction sensor (302) and a vibration state sensor (301); the wind speed and direction sensor (302) monitors the incoming wind speed and wind direction at the corresponding position of the tower (1) at different heights; the vibration state sensors (301) monitor the vibration states of the corresponding positions of the tower (1) at different heights.
6. The intelligent air bag vortex-induced vibration control system of a wind turbine tower according to claim 1, wherein the intelligent control system comprises a control workstation (300) arranged in a bottom working bin of the tower (1), and the control workstation (300) is connected with the monitoring system and the air bag system (2) through a data transmission line arranged in the tower (1).
7. The intelligent air bag vortex vibration control method for the fan tower is characterized by comprising the following steps of:
s1, monitoring real-time wind speeds, wind directions and vibration states of different height positions of a fan tower (1);
s2, judging whether the real-time wind speed is in a vortex vibration wind speed interval of the fan tower (1); if not, the intelligent control system does not output signals, and the air bag system (2) is in a non-working state; if yes, go to S3;
s3, the intelligent control system determines vortex vibration orders of the tower drum (1) according to real-time wind speeds, wind directions and real-time vibration states at different heights of the tower drum (1) and a finite element model of the tower drum (1);
s4, determining a section shape control parameter of the air bag system (2) required by the current vortex-induced vibration order of the tower (1);
s5, inflating the air bag system (2) to form an air bag (200) structure with a corresponding section shape;
s6, continuously monitoring the vibration state of the tower (1), and determining whether the tower (1) returns to the normal vibration state; if not, jumping to S3; if so, jump to S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310666454.1A CN116696664A (en) | 2023-06-07 | 2023-06-07 | Intelligent air bag vortex vibration control system and method for fan tower barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310666454.1A CN116696664A (en) | 2023-06-07 | 2023-06-07 | Intelligent air bag vortex vibration control system and method for fan tower barrel |
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| CN116696664A true CN116696664A (en) | 2023-09-05 |
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|---|---|---|---|
| CN202310666454.1A Pending CN116696664A (en) | 2023-06-07 | 2023-06-07 | Intelligent air bag vortex vibration control system and method for fan tower barrel |
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| Country | Link |
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| CN (1) | CN116696664A (en) |
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- 2023-06-07 CN CN202310666454.1A patent/CN116696664A/en active Pending
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