CN107514344A - Tower hoisting method of wind generating set and vortex-induced vibration monitoring system - Google Patents
Tower hoisting method of wind generating set and vortex-induced vibration monitoring system Download PDFInfo
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- CN107514344A CN107514344A CN201710669695.6A CN201710669695A CN107514344A CN 107514344 A CN107514344 A CN 107514344A CN 201710669695 A CN201710669695 A CN 201710669695A CN 107514344 A CN107514344 A CN 107514344A
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- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 230000001629 suppression Effects 0.000 claims abstract description 48
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 56
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 230000001133 acceleration Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 15
- 230000009471 action Effects 0.000 description 13
- 230000008859 change Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002401 inhibitory effect Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
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- 238000010248 power generation Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- 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
-
- 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
-
- 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 invention provides a tower hoisting method of a wind generating set and a vortex-induced vibration monitoring system. The tower frame comprises N sections of tower barrels, N is a natural number greater than 3, and the tower frame hoisting method comprises the following steps: hoisting the first to the Nth sections of tower barrels in sequence; after the first to the a-th sections of tower drums are hoisted, detecting the vibration frequency of the tower in the lifting force direction formed by the first to the a-th sections of tower drums; predicting a first vortex shedding frequency of the tower after the hoisting of the Nth section of tower drum is finished based on the vibration frequency in the lifting direction of the tower, and judging whether the first vortex shedding frequency meets a preset condition; and if the preset conditions are met, determining that the vortex-induced vibration suppression devices are respectively installed on the (a + 1) th to nth tower barrels when the (a + 1) th to nth tower barrels are hoisted. Therefore, the vortex shedding frequency of the tower after hoisting can be predicted according to the actual stress condition of the tower on the hoisting site, so that the installation time of the vortex-induced vibration suppression device can be accurately judged, and the aims of avoiding influencing the structural strength of the tower and the hoisting progress of the tower are fulfilled.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly to a kind of tower hoisting method of wind power generating set and whirlpool
Excited vibration monitoring system.
Background technology
Pylon carries the weight of whole cabin and impeller sets, due to big as the important component in wind power generating set
Pylon in most wind power generating sets is to be sequentially stacked to form by multiple towers, so multiple towers are connected by way of lifting
Structural strength and stability after connecing is particularly important.
But during lifting pylon is performed, when especially being lifted to high tower and soft tower, in lifting to one
When determining height, it can be influenceed by wind active force, it is possible that producing pylon, significantly periodic vibration, one of which are exactly tower
There is vortex-induced vibration in frame.After there is vortex-induced vibration, the stable connection between multiple towers during tower hoisting on the one hand can be influenceed
Property, that is, the structural strength after tower hoisting, particularly fatigue strength are influenceed, increases the fatigue damage of pylon.On the other hand can also
Influence the lifting progress of whole wind power generating set, waste of manpower, material resources, financial resources.Therefore, it is necessary in tower oscillation to a certain frequency
During rate scope, vortex-induced vibration suppression device is installed in the tower for need erecting device in time, avoid after the completion of tower hoisting
Vortex-induced vibration occurs under wind incentive action.
At present, the method that the installation site of vortex-induced vibration suppression device is determined during lifting is to use simulation model
Method to pylon apply wind excitation, the response that pylon encourages to wind when being lifted into different phase to predict, including stress are big
Small and frequency, judge whether to need to use vortex-induced vibration suppression device to intervene vortex-induced vibration accordingly.But emulating
During need to carry out the selection of model hypothesis and empirical parameter, therefore some errors can be brought to simulation result, meanwhile, project
The wind regime at scene is various and changeable, and the method for instructing lifting according to simulation result is short of flexibility.And once judge error occur,
Then the incentive action of wind can not effectively be suppressed, therefore pylon is also possible that vortex-induced vibration can occur, so as to reduce
The structural strength of pylon, there is fatigue damage in increase pylon, or even triggers security incident.
Therefore, the tower hoisting method and vortex-induced vibration monitoring system of a kind of new wind power generating set are needed badly.
The content of the invention
According to an embodiment of the invention, there is provided tower hoisting method and the vortex-induced vibration monitoring of a kind of wind power generating set
System, can be according to the actual forced status that pylon to the dynamic response of wind load, is determined in the actual hoisting process of pylon, and in advance
Vortex shedding frequency when tower hoisting is completed is measured, the imminent vortex-induced vibration of pylon is shifted to an earlier date exactly so as to realize
Prediction, the strategy of adjustment lifting in time, to judge the installation site of vortex-induced vibration suppression device, avoid that vortex-induced vibration occurs and influences
The structural strength of pylon and the purpose of tower hoisting progress.
One side according to embodiments of the present invention, there is provided a kind of tower hoisting method of wind power generating set, it is described
Pylon includes the tower that N sections are stacked and are connected to each other, and wherein N is the natural number more than 3, and the tower hoisting method includes：By
Under supreme lifted successively to first to the N sections tower；After the completion of first to the tower lifting of a sections, detection
By the vibration frequency in the first to a sections tower pylon lift direction formed, wherein a is more than 1, and is less than or equal to N
Natural number；Worked as based on being predicted by the vibration frequency in the first to a sections tower pylon lift direction formed described in N sections
First vortex shedding frequency of the pylon after the completion of tower lifting, and judge whether first vortex shedding frequency meets default bar
Part；When first vortex shedding frequency meets the preparatory condition, it is determined that in lifting a+1 towers described to N sections
Vortex-induced vibration suppression device is installed on a+1 to the N sections tower respectively.
One side according to embodiments of the present invention, tower hoisting method also include：By first to a sections tower
Installation detecting device at the presumptive test point of the pylon of composition.
One side according to embodiments of the present invention, the detection means include：Strain-ga(u)ge transducer, the foil gauge pass
Sensor is in a manner of length direction is consistent with the bearing of trend of the pylon on the tower wall of the tower；Or add
Speed displacement sensor, the acceleration displacement transducer are arranged on the top by the first pylon formed to a sections tower
Portion position.
One side according to embodiments of the present invention, tower hoisting method also include：Set on the tower wall of the tower
Two strain-ga(u)ge transducers are put, and make the angles of two strain-ga(u)ge transducers and the tower line of centres be in
90°；Or on the tower wall of the tower set three strain-ga(u)ge transducers described above, and make three it is described above
Circumference of the strain-ga(u)ge transducer along the tower is uniformly distributed.
One side according to embodiments of the present invention, tower hoisting method also include：When first vortex shedding frequency not
When meeting the preparatory condition, then after the completion of the tower lifting of a+1 sections, detect by first to the a+1 sections tower
The vibration frequency in the pylon lift direction of composition；Based on by the first to a+1 sections tower pylon lift direction formed
Second vortex shedding frequency of pylon of the vibration frequency prediction after the completion of the tower lifting of N sections, and determine second whirlpool
Whether shedding frequence meets the preparatory condition；When second vortex shedding frequency meets the preparatory condition, it is determined that
The vortex-induced vibration is installed on a+2 to the N sections tower respectively when lifting described to the N sections tower of a+2 sections to suppress
Device.
One side according to embodiments of the present invention, when installation direction and the pylon of the detection means bear load
Direction it is vertical when, the preparatory condition is：90%fn ＜ bfv ＜ 110%fn, wherein, the fn is the intrinsic of the tower
Frequency, the fv are the vibration frequency in the pylon lift direction, and the b is servo-actuated weight coefficient.
Other side according to embodiments of the present invention, additionally provide a kind of tower hoisting applied to wind power generating set
Vortex-induced vibration monitoring system, the pylon includes the N sections tower that be stacked and is connected to each other, and wherein N is the natural number more than 3,
The vortex-induced vibration monitoring system includes：Detection means, it is arranged on the pre- location survey of the first pylon formed to a sections tower
At pilot, for detect by the first to a sections tower pylon lift direction formed vibration frequency, wherein a be more than
1, and the natural number less than or equal to N；Processing unit, it is connected with the detection means, for based on as described in first to a sections
First whirlpool of pylon of the vibration frequency prediction in the pylon lift direction that tower is formed after the completion of the tower lifting of N sections takes off
Fall frequency, and judge whether first vortex shedding frequency meets preparatory condition, when described in first vortex shedding frequency satisfaction
During preparatory condition, it is determined that installed respectively on a+1 to the N sections tower in lifting a+1 towers described to N sections
Vortex-induced vibration suppression device.
Other side according to embodiments of the present invention, the detection means include：Strain-ga(u)ge transducer, the foil gauge
Sensor is in a manner of length direction is consistent with the bearing of trend of the pylon on the tower wall of the tower；Or
Acceleration displacement transducer, the acceleration displacement transducer are arranged on by the first pylon formed to a sections tower
Tip position.
Other side according to embodiments of the present invention, the detection means include two strain-ga(u)ge transducers, and
And the angle of two strain-ga(u)ge transducers and the tower line of centres is in 90 °；Or the detection means includes three
Strain-ga(u)ge transducer described above, and circumference of three strain-ga(u)ge transducers described above along the tower is uniformly distributed.
Other side according to embodiments of the present invention, when installation direction and the pylon of the detection means bear to carry
When the direction of lotus is vertical, the preparatory condition is：90%fn ＜ bfv ＜ 110%fn, wherein, the fn is consolidating for the tower
There is frequency, the fv is the vibration frequency in the pylon lift direction, and the b is servo-actuated weight coefficient.
To sum up, the tower hoisting method and vortex-induced vibration monitoring system of the wind power generating set of the embodiment of the present invention, passes through
During the tower hoisting with N section towers, after the completion of first to a sections tower is lifted, detect by first to a sections
The vibration frequency in the lift direction for the pylon that tower is formed, and based on the lift side by the first pylon formed to a section towers
To vibration frequency prediction work as the first vortex shedding frequency after the completion of pylon integral hoisting, and judge that first vortex shedding frequency is
It is no to meet preparatory condition, when the first vortex shedding frequency meets preparatory condition, it is determined that need in remaining tower to be lifted
Vortex-induced vibration suppression device is installed.Therefore, the tower hoisting method and vortex-induced vibration monitoring system of the embodiment of the present invention, Neng Gou
In the actual hoisting process of pylon, according to excitation situation of the actual wind load in lifting scene to pylon, judge whether needs pair
The vortex-induced vibration that pylon may occur is intervened, and is avoided that vortex-induced vibration occurs after the completion of tower hoisting, is influenceed the lifting of pylon
Process simultaneously causes the wasting of resources, or even the problem of influence pylon structure intensity.
Brief description of the drawings
The present invention may be better understood from the description to the embodiment of the present invention below in conjunction with the accompanying drawings, its
In：
The detailed description made referring to the drawings to non-limiting example by reading, further feature of the invention,
Objects and advantages will become more apparent upon, wherein, same or analogous reference represents same or analogous feature.
Fig. 1 is power analysis chart of the pylon by wind incentive action for showing wind power generating set；
Fig. 2 is the flow chart of the tower hoisting method of the wind power generating set provided according to one embodiment of the invention；
Fig. 3 is the structural representation of a specific installation example of detection means according to embodiments of the present invention；
Fig. 4 is the structural representation of another specific installation example of detection means according to embodiments of the present invention；
Fig. 5 is the flow chart of the tower hoisting method of the wind power generating set provided according to a further embodiment of the invention；
Fig. 6 is the structured flowchart of vortex-induced vibration monitoring system according to an embodiment of the invention；
Fig. 7 is the structural representation of a concrete application example of the vortex-induced vibration monitoring system shown in Fig. 6.
Wherein, 10- towers；20- vortex-induced vibration monitoring systems；20a- data processing equipments；21- detection means；22- data
Harvester；23- processing units.
Embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, it is proposed that many details, to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case of some details in not needing these details.Below to implementing
The description of example is used for the purpose of by showing that the example of the present invention is better understood to provide to the present invention.In accompanying drawing and following
Description in, at least part of known features and technology are not illustrated, unnecessary fuzzy to avoid causing the present invention；
Also, in order to clear, it may be exaggerated the size of part-structure.Identical reference represents same or similar knot in figure
Structure, thus their detailed description will be omitted.In addition, feature described below, structure or characteristic can be with any suitable
Mode be incorporated in one or more embodiments.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be to be joined directly together, can also be indirectly connected.For the ordinary skill in the art, visual concrete condition understands above-mentioned
The concrete meaning of term in the present invention.
The tower hoisting method and vortex-induced vibration monitoring system of wind power generating set provided in an embodiment of the present invention, in wind-force
During the tower hoisting of generating set, can by it is actually detected to wind load to completed lifting pylon caused by shadow
Vortex shedding frequency when prediction pylon integral hoisting is completed is rung, so as to according to judging whether structure determination needs subsequently lifting
Vortex-induced vibration suppression device is installed in tower, issuable vortex-induced vibration after the completion of pylon integral hoisting is intervened.Cause
This by the actual loading situation during measuring tower hoisting, can accurate judgement whether need vortex-induced vibration is installed and suppress dress
Put, and then prevent pylon during lifting due to vortex-induced vibration occurs, and to its structural strength and wind power generating set
Overall erection schedule impacts.
For a better understanding of the present invention, with reference to wind power generating set according to embodiments of the present invention Fig. 1 to Fig. 7
Tower hoisting method and vortex-induced vibration monitoring system 20 illustrate.
Fig. 1 is power analysis chart of the pylon by wind incentive action for showing wind power generating set.Pylon not shown in figure
Overall structure, the wind incentive action only born by taking a certain section of tower 10 in pylon as an example to pylon are analyzed.When pylon by
To after the wind load action with certain speed, the Impact direction of pylon can be divided into both direction, as shown in figure 1, wherein, FL
The wind load born by pylon in lift direction, i.e. pylon are in the active force being subject to perpendicular to the direction of wind load；FDFor tower
The active force that the wind load that frame is born in drag direction, i.e. pylon are subject in the direction parallel to wind load.Lift variation
Frequency is vortex shedding frequency, and the frequency of resistance change is two times of the frequency of lift variation.
Fig. 2 is the flow chart of the tower hoisting method of the wind power generating set provided according to one embodiment of the invention.Such as
Shown in Fig. 2, in order to prevent pylon during lifting due to vortex-induced vibration is occurred by wind incentive action, in the present embodiment
In, the force-bearing situation that pylon is detected at tower hoisting to precalculated position is taken, and analyzed according to the force-bearing situation of pylon
Judge whether to need that vortex-induced vibration suppression device (not shown) is installed in tower 10 to be lifted.Thus, it is possible to avoid adopting
With existing structure model and empirical parameter is chosen to judge the opportunity of the installation vortex-induced vibration suppression device on pylon, due to holding
Easily there is error, it is thus possible to the problem of causing judgement to be made a fault.
In the present embodiment, tower hoisting method comprises the following steps.
Step S101, lifted successively to first to N section towers from the bottom to top, N is the natural number more than 3.
Exemplarily, it is assumed that the pylon of wind power generating set includes N sections tower 10.Make N section towers by lifting operation
During 10 formation pylon, N sections tower 10, which need to be sequentially stacked and be connected to each other according to order from the bottom to top, forms complete pylon.
Step S102, after the completion of first to a sections tower lifts, detect by the first pylon formed to a section towers
Lift direction vibration frequency, wherein a be more than 1, and less than or equal to N natural number.
Under normal conditions, the tower hoisting method in the embodiment of the present invention is applied to instruct the lifting of high tower and soft tower
Journey, when pylon reaches predetermined altitude, it may occur that vortex-induced vibration.Exemplarily, for example, predetermined altitude be 80 meters, i.e., 80 meters with
On pylon after the completion of lifting, by wind load influenceed caused by vibration frequency be possible to intrinsic frequency phase with pylon
It is close, and then vortex-induced vibration occurs.
Therefore, during tower hoisting, it is necessary to according to currently completed lifting pylon by wind incentive action when
Dynamic response analyze the size of the wind driving frequency being applied on pylon and wind load, that is, to not completing the tower of lifting
Frame caused vibration under wind incentive action is detected, and then is hung according to the vibration frequency prediction entirety in the lift direction of acquisition
The vortex shedding frequency of pylon after the completion of dress, so that during the on-site hoisting of pylon, accurate judgement whirlpool is swashed by testing result
The specific installation site of equipment for inhibiting of vibration.The relevant position for being additionally may included in pylon in this step sets default test
Point, and corresponding detection means 21 is installed at presumptive test point.
In order to ensure the accuracy of the detection data finally obtained, the data that detection means 21 detects are enable truly to have
Effect ground reflects the force-bearing situation of pylon, the position of presumptive test point can according to the architectural characteristic of detection means 21 itself and
Cleaning Principle is set.
Fig. 3 is the structural representation of a specific installation example of detection means 21 according to embodiments of the present invention.Such as Fig. 3
Shown, in one exemplary embodiment, above-mentioned detection device 21 includes strain-ga(u)ge transducer.
Strain-ga(u)ge transducer is installed on pylon as detection means 21 when taking, the force-bearing situation of pylon is detected
When, the Cleaning Principle of strain-ga(u)ge transducer is the deflection for sensing measured object, and the deflection of measured object is characterized as into electric signal,
Further across the vibration frequency that pylon lift direction is calculated.Exemplarily, strain-ga(u)ge transducer can be with its length side
The tower wall for being attached to tower 10 is installed to the mode consistent with the bearing of trend of pylon.Simultaneously as work of the pylon in wind load
When being deformed upon under, the deformation that it occurs at fixing end is the most serious, can be with so in order to get accurate data
Strain-ga(u)ge transducer is arranged close on the tower wall of tower bottom, that is, the tower wall of the first paragraph tower 10 of pylon
Bottom position.Certain strain-ga(u)ge transducer can be installed in advance when not lifting first paragraph tower 10, can also be in first paragraph tower
Installed after the completion of the lifting of cylinder 10.
In addition, quantity embodiments of the invention for strain-ga(u)ge transducer and be not limited, exemplarily, Ke Yi
Two strain-ga(u)ge transducers are installed (when installing a strain-ga(u)ge transducer, with installing two strain-ga(u)ge transducers in tower 10
Situation it is similar).Mounting means of two strain-ga(u)ge transducers on tower wall be：Two strain-ga(u)ge transducers and tower center
The angle of line is in 90 °.The force-bearing situation of pylon can so be detected in different directions respectively by two strain-ga(u)ge transducers,
It can so ensure smoothly to capture vibration frequency of the pylon in lift direction to greatest extent.
In certain embodiments, more strain-ga(u)ge transducers can also be installed in single hop tower 10, that is, install three
Strain-ga(u)ge transducer above.And circumference of more than three strain-ga(u)ge transducers along tower 10 can be uniformly arranged on tower
The wall portion of frame.By the way that circumference of the strain-ga(u)ge transducer of more than three along tower 10 is uniformly arranged, pylon can be obtained more
Vibration frequency on individual direction, now, it can more accurately obtain the vibration frequency in the lift direction of pylon.
In specific implementation process, when setting multiple strain-ga(u)ge transducers on the tower wall of tower 10, then it can divide
The vibration frequency for the multiple directions that multiple strain-ga(u)ge transducers detect is not obtained, and further multiple foil gauges can be sensed
The vibration frequency that device detects is screened, and the vibration frequency that amplitude maximum is filtered out from the multiple vibration frequencies detected is made
For the vibration frequency in lift direction.
Fig. 4 is the structural representation of another specific installation example of detection means 21 according to embodiments of the present invention.Such as
Shown in Fig. 4, in another exemplary embodiment, above-mentioned detection device 21 is acceleration displacement transducer.
Acceleration displacement transducer is installed on pylon as detection means 21 when taking, the force-bearing situation of pylon is carried out
During detection, because the Cleaning Principle of acceleration displacement transducer is the moving displacement amount that senses measured object, and by the fortune of measured object
Dynamic displacement is characterized as acceleration magnitude, and the vibration frequency in pylon lift direction is calculated further across analysis.Simultaneously as
For pylon when being moved in the presence of wind load, the displacement amplitude that its one end away from fixing end occurs is maximum, so in order to
Most accurately data are got, acceleration displacement transducer can be arranged on to the opening position of tower top.For example, when needs pair
When the force-bearing situation for the pylon being made up of 3 sections of towers 10 is detected, acceleration displacement transducer can be arranged on the 3rd section of tower
At the tip position of cylinder 10.
Certainly, embodiments of the invention are not limited to this, and in other examples, detection means 21 can also include it
The sensor of his type, as long as can be by the pylon of wind power generating set, the shadow in pylon by wind load
When ringing, detect the force-bearing situation of pylon and respond the vibration frequency that force-bearing situation obtains pylon.
When rule of thumb, more than tower hoisting to predetermined altitude, pylon caused vibration frequency in the presence of wind load
Rate may be close to the intrinsic frequency of pylon.Under normal circumstances, after the 3rd section of tower 10 is lifted, vortex-induced vibration is remarkably reinforced.
In embodiments of the present invention, exemplarily, it is assumed that N=5, a=3, i.e. pylon have 5 sections of towers 10.When in 5 sections of towers 10
After the completion of 3 sections of towers 10 lift, the pylon being made up of 3 sections of towers 10 reaches above-mentioned predetermined altitude, then now needs to by
The vibration frequency for the pylon that 3 sections of towers 10 through completing lifting are formed is detected.
In specific implementation process, (part pylon is now completed after the 1st to the 3rd section of tower 10 are completed in lifting
Lifting operation), start the vibration frequency of the pylon that the 1st to the 3rd section of tower 10 of detection is formed by above-mentioned detection means 21.
Specifically, so that detection means 21 is strain-ga(u)ge transducer as an example, because strain-ga(u)ge transducer is arranged on the tower of the 1st section of tower 10
Wall, therefore when pylon is deformed upon by the effect of wind load, the foil gauge in strain-ga(u)ge transducer then can be in company with pylon
Together deform upon, strain-ga(u)ge transducer can then produce the electrical signal data that strains and can respond strain generation change, enter one
Change electrical signal data is handled to obtain the vibration frequency for the pylon being made up of the 1st to the 3rd section of tower 10 by step.Then can be with
The vibration frequency of amplitude maximum is filtered out in the vibration frequency of the multiple directions detected from multiple strain-ga(u)ge transducers as tower
The vibration frequency in frame lift direction.Exemplarily, when strain-ga(u)ge transducer is resistance strain plate sensor, resistance-type strain
Piece can respond the deformation quantity of pylon and deformation quantity is converted into resistance change.
And when acceleration displacement transducer is as detection means 21, acceleration displacement transducer then may be mounted at the 3rd
The top of section tower 10.When pylon is produced displacement by the effect of wind load on the top of pylon, acceleration displacement sensing
Inside device then can based on pylon displacement generate acceleration change, further acceleration change data are handled to obtain
The vibration frequency in the lift direction for the pylon being made up of the 1st to the 3rd section of tower 10.
Step S103, the vibration frequency prediction based on the lift direction by the first pylon formed to a section towers is as N
First vortex shedding frequency of the pylon after the completion of section tower lifting, and judge whether the first vortex shedding frequency meets preparatory condition.
Wherein, preparatory condition is：
90%fn ＜ bfv ＜ 110%fn formula (1)
Wherein, fn is the intrinsic frequency of pylon, and fv is the vibration frequency in the lift direction of pylon, and b is servo-actuated weight coefficient.
In embodiments of the present invention, b can set phase according to the difference of the hop count N of tower 10 in the pylon currently completed
Span is answered, its value can take different value according to a value difference in the scope.Such as N=5, it can incite somebody to action
B span is defined to：1.1-1.5, exemplarily, when the hop count a that tower 10 is completed in current lifting is 3, b value can be with
It is taken as 1.3；And when the hop count a that tower 10 is completed in current lifting is 4, b value can be taken as 1.2.
In addition, in other examples, b can also be configured using interpolation method.For example, b completes to lift with current
Tower 10 hop count it is relevant, it is the height for the pylon that b is formed with the current tower 10 for completing lifting, straight in particular situation
The data such as footpath, actual wind speed are relevant, therefore can utilize the corresponding pass between b and the hop count of the current tower 10 for completing lifting
Specific function is made by system.Exemplarily, such as N=5, it is known that the hop count a of the current tower 10 for completing lifting is 1, accordingly
Ground, b=1.5；And the hop count a for currently completing the tower 10 of lifting is 5, correspondingly, b=1.1, then corresponding letter can be constructed
Number.Then the value of b corresponding to the hop count of the tower 10 lifted from different current completions is calculated using the function.
Step S104, when the first vortex shedding frequency meets preparatory condition, it is determined that in lifting a+1 to N section towers
When vortex-induced vibration suppression device is installed on a+1 to N section towers respectively.
Firstly, it is necessary to can gather in above-mentioned steps S102 by detection means 21 detect by first to a section towers
Vibration frequency of 10 pylons formed in lift direction.
Exemplarily, work as N=5, during a=3, now need based on detection means 21 detect by the 1st to the 3rd section of tower
In the vibration frequency in lift direction, the first whirlpool of pylon of the prediction after the completion of the 5th section of tower 10 lifts takes off 10 pylons formed
Fall frequency, and by the first vortex shedding frequency compared with preparatory condition.
Exemplarily, the obtaining value method based on above-mentioned formula (1) and servo-actuated weight coefficient b, now a=3, then b take
Value can be 1.3, so preparatory condition now is：
90%fn ＜ 1.3fv ＜ 110%fn formula (2)
Wherein, fn is the intrinsic frequency of pylon, and fv is the vibration frequency in pylon lift direction.And the 1.3fv in formula (2)
It is that the 5th section of tower 10 of working as predicted based on vibration frequency of the pylon being made up of the 1st to the 3rd section of tower 10 in lift direction is hung
First vortex shedding frequency of the pylon after the completion of dress.
By judging whether b1.3fv meets formula (2), that is, judge now to be based on by the 1st to the 3rd section of structure of tower 10
Into pylon lift direction vibration frequency predict when 5 sections of towers 10 lift after the completion of pylon the first vortex shedding frequently
Whether rate and the intrinsic frequency of pylon meet the occurrence condition of resonance, that is, judge whether may occur after the completion of pylon integral hoisting
Vortex-induced vibration.
Therefore, when 1.3fv meets above-mentioned formula (2), then need pre- in the 4th and the 5th section of tower 10 to be lifted
Vortex-induced vibration suppression device is first installed., can be by the whirlpool installed thereon after the completion of the 4th and the 5th section of tower 10 is lifted
The vortex-induced vibration occurred caused by induced vibration suppression device is possible to the effect due to wind load during whole pylon installation enters
Row pro-active intervention.Therefore pylon can be avoided to cause, by fatigue damage, to enter due to being produced vortex-induced vibration by wind incentive action
And influence the structural strength of pylon.
Therefore, tower hoisting method provided in an embodiment of the present invention is by the actual hoisting process of pylon, based on reality
The current pylon for having completed lifting that border detects predicts pylon under wind excitation in vibration frequency caused by lift direction
The first vortex shedding frequency when integral hoisting is completed, and the first vortex shedding frequency is contrasted with preparatory condition.Therefore can
Judge whether the intrinsic frequency of the first vortex shedding frequency and pylon meets the occurrence condition of resonance, with according to judged result in tower
Vortex-induced vibration suppression device is installed in the tower 10 of frame appropriate location.
It is directly according to it in the actual lifting operating process of pylon due to the tower hoisting method of the embodiment of the present invention
The data result that actual loading condition detection obtains judged, compared to needing to establish simulation model simultaneously in existing hanging method
The mode for choosing empirical data to judge the installation site of vortex-induced vibration suppression device, the pylon of the embodiment of the present invention are hung
Dress method will not impact because the judgement for producing error and opportunity being installed to vortex-induced vibration suppression device.Due to different
Under wind friction velocity, the wind load that pylon is subject to is different, and the vibrational state of pylon also changes with wind speed, and the embodiment of the present invention
Tower hoisting method can lifting scene actual wind regime in the case of, detect the liter of pylon being made up of part tower 10
The vibration frequency of force direction, and the vibration frequency in the lift direction of the pylon formed according to part tower 10 predicts tower exactly
The first vortex shedding frequency after the completion of frame integral hoisting, so as to swash exactly to the whirlpool that may occur after the completion of tower hoisting
Vibration is accurately predicted, therefore can adjust lifting strategy in time according to actual lifting situation, judges that vortex-induced vibration suppresses dress
The installation opportunity put.Avoid pylon from influenceing its integrally-built intensity due to vortex-induced vibration occurs, pylon is protected from fatigue
Damage, by increasing capacitance it is possible to increase the service life of pylon.Simultaneously, additionally it is possible to accelerate the lifting process of pylon, save whole wind-driven generator
The assembling man-hour of group, and then save the resources such as manpower, financial resources, material resources.
Fig. 5 is the flow chart of the tower hoisting method of the wind power generating set provided according to a further embodiment of the invention.
As shown in figure 5, step S101 in the tower hoisting method of the present embodiment is to step S103 and the tower hoisting of above-described embodiment
Step S101 in method is identical to step S103, therefore is not repeated here.Difference is that the pylon in the present embodiment is hung
Dress method also includes step S105 and step S107.
Step S105, when the first vortex shedding frequency is unsatisfactory for preparatory condition, then after the completion of the lifting of a+1 sections tower,
Detect the vibration frequency by the first to a+1 section towers pylon lift direction formed.
In some embodiments, it may be possible to occur need not in last two sections of towers 10 and meanwhile install vortex-induced vibration suppress dress
Situation about putting.Specifically, after having performed above-mentioned steps S101 to step S103, when the first vortex shedding for being calculated analytically to obtain
When frequency is unsatisfactory for preparatory condition, then explanation need not install vortex-induced vibration in a+1 sections tower 10 to be lifted and suppress to fill
Put.So now treat after the completion of a+1 sections tower 10 is lifted, it is necessary to by detection means 21 to currently by first to a+1
The force-bearing situation for the pylon that section tower 10 forms is detected, to obtain by first pylon formed to a+1 sections tower 10
Vibration frequency in lift direction.
Exemplarily, N=5, a=3 are equally set.When the first vortex shedding frequency is unsatisfactory for preparatory condition, by the 4th section
After the completion of tower lifting, the force-bearing situation for the pylon being made up of the 1st to the 4th section of tower 10 is detected via detection means 21, is obtained
By vibration frequency of the pylon that the 1st to the 4th section of tower 10 is formed in lift direction.
It should be noted that when detection means 21 is acceleration displacement transducer, when installing a+1 section towers 10,
Acceleration displacement transducer can be attached to the tip position of a+1 sections tower 10, will pass through acceleration displacement transducer
Measure more accurate tower oscillation frequency.
Step S106, work as N based on being predicted by the vibration frequency in the first to a+1 section towers pylon lift direction formed
Second vortex shedding frequency of the pylon after the completion of section tower lifting, and determine whether the second vortex shedding frequency meets preparatory condition.
Step S107, when the second vortex shedding frequency meets preparatory condition, it is determined that in lifting a+2 sections to N section towers
The vortex-induced vibration suppression device is installed on a+2 to N section towers respectively during cylinder.
In this step, it is necessary to according to detecting by the first to a+1 sections tower 10 pylon formed in lift direction
Vibration frequency predict the second vortex shedding frequency of the pylon after the completion of integral hoisting, and by the second vortex shedding predicted frequency
Rate is contrasted with preparatory condition, judges whether to meet preparatory condition, to determine the need for treating the remaining tower of lifting
10 installation vortex-induced vibration suppression devices.
Exemplarily, the obtaining value method based on above-mentioned formula (1) and servo-actuated weight coefficient b, now a=4, then b take
Value can be 1.15, so preparatory condition now is：
90%fn ＜ 1.15fv ＜ 110%fn formula (3)
Wherein, fn is the intrinsic frequency of pylon, and fv is the vibration frequency in pylon lift direction.And the 1.15fv in formula (3)
It is that the 5th section of tower 10 of working as that the vibration frequency based on the pylon lift direction being made up of the 1st to the 4th section of tower 10 predicts lifts
After the completion of pylon the first vortex shedding frequency.
Next, whether the second vortex shedding frequency that contrast obtains meets formula (3), by judging the second vortex shedding frequency
Whether meet formula (3), that is, judge whether the intrinsic frequency of the second vortex shedding frequency and pylon now predicted meets
The occurrence condition of resonance, that is, judge whether vortex-induced vibration may occur after pylon integral hoisting is complete.
Therefore, when the second vortex shedding frequency meets above-mentioned formula (3), then need in the 5th section of tower 10 to be lifted
Upper installation vortex-induced vibration suppression device in advance.So as to may to the effect due to wind load by vortex-induced vibration suppression device
The vortex-induced vibration that caused whole pylon occurs carries out pro-active intervention.Therefore pylon can be avoided due to being produced by wind incentive action
Raw vortex-induced vibration, cause pylon by fatigue damage, and then influence the structural strength of pylon.
The tower hoisting method of the embodiment of the present invention, it is that the tower 10 based on the preceding paragraph lifting need not install vortex-induced vibration
In the case of restraining device, then need after the completion of next section of tower 10 lifts, according to pylon in operating process is actually lifted
The vibration frequency for detecting obtained lift direction is further judged, so as to judge vortex-induced vibration suppression device exactly
Precise mounting position, thus, it is possible to avoid pylon generation vortex-induced vibration from influenceing its overall construction intensity and influence its lifting progress
The problem of.Tower hoisting method provided in an embodiment of the present invention is arrived based on actually detected by the hoisting process of pylon
Currently overall hang is predicted by the pylon that part tower 10 is formed in vibration frequency caused by lift direction under wind incentive action
Second vortex shedding frequency of pylon when installing into, and the second vortex shedding frequency is contrasted again with preparatory condition.Therefore
It can interpolate that out whether the intrinsic frequency of the second vortex shedding frequency and pylon meets the occurrence condition to resonate, with according to judged result
Vortex-induced vibration suppression device is installed in tower 10 to be lifted.
In addition, in an optional embodiment, tower hoisting method, which is additionally may included in, will be provided with vortex-induced vibration suppression
After the completion of the tower 10 of device processed lifts, the step that validity is verified is carried out to the vortex-induced vibration suppression device installed on pylon
Suddenly.
In the present embodiment, it is necessary to detect integral hoisting via detection means 21 after the completion of N sections tower 10 all lifting
After the completion of pylon in the current vibration frequency (vibration frequency now is equivalent to vortex shedding frequency) in lift direction, then ought
Preceding vibration frequency and preparatory condition are contrasted, and judge whether current vibration frequency meets preparatory condition, when current vibration frequency
When being unsatisfactory for preparatory condition, it is determined that vortex-induced vibration does not occur for pylon.Certainly specifically according to the deterministic process of preparatory condition with
Judge that the first whirlpool swashs whether frequency meets that the process of preparatory condition is similar in above-described embodiment, therefore be not repeated here.
If the current vibration frequency of pylon is unsatisfactory for preparatory condition, illustrate currently to suppress dress by installing vortex-induced vibration
The vortex-induced vibration that putting, pylon may occur serves effective inhibitory action.And if current vibration frequency meets default bar
Part, then illustrate do not have to play the vortex-induced vibration of pylon effective inhibitory action by installing vortex-induced vibration suppression device.
Therefore, it is also desirable to the problem of corresponding investigation is carried out, for example whether occurring whether the system failure, vortex-induced vibration suppression device are installed to
Position etc..It is possible thereby to after vortex-induced vibration suppression device is installed, verify the validity of vortex-induced vibration suppression device in time, avoid by
Effectively suppressed in the vortex-induced vibration that the reasons such as operational error cause pylon can not may occur, and occur influenceing pylon
The problems such as lifting process of structural strength and entirety.
Certainly, in the case that the tower hoisting method in this implementation can be applied in the unfinished integral hoisting of pylon,
That is after the completion of some tower 10 for being provided with vortex-induced vibration suppression device lifts, above-mentioned checking can be equally used
The vortex-induced vibration suppression device that step is installed on the pylon to not completing integral hoisting carries out validation verification.
Exemplarily, N=5 is worked as, during a=3, when by detection, judging to need to install vortex-induced vibration suppression in 4 sections of towers 10
Device processed, then in the 4th section of tower 10 install vortex-induced vibration suppression device and complete the 4th section of tower 10 lifting after, now by
Detection means 21 is detected by vibration frequency of the pylon that the 1st to the 4th section of tower 10 is formed in lift direction, and according to vibration frequency
Rate predicts the vortex shedding frequency of the pylon after the completion of integral hoisting, is then contrasted vortex shedding frequency and preparatory condition,
If the vortex shedding frequency predicted is unsatisfactory for preparatory condition, it is determined that whirlpool exciting will not occur for the pylon after the completion of integral hoisting
It is dynamic.Thus the vortex-induced vibration suppression device for judging to be arranged in the 4th section of tower 10 is effective.
In addition, the tower hoisting method in above-mentioned each embodiment can also include：When the first whirlpool of the pylon predicted
When excited vibration or the second vortex-induced vibration meet corresponding preparatory condition, then give a warning prompting.The form of warning prompt has more
Kind, for example, corresponding auditory tone cues can be sent, or send corresponding message notifying etc..So that operating personnel being capable of basis
Prompting installs vortex-induced vibration suppression device in next section of tower 10 to be lifted, thus, it is possible to quickly respond judged result,
Corresponding lifting operating procedure is instructed, when further saving slinger.
Please also refer to Fig. 6 and Fig. 7, wherein, Fig. 6 is vortex-induced vibration monitoring system 20 according to an embodiment of the invention
Structured flowchart；Fig. 7 is the schematic diagram of a concrete application example of the vortex-induced vibration monitoring system 20 shown in Fig. 6.Such as Fig. 6
Shown, vortex-induced vibration monitoring system 20 includes detection means 21, data acquisition device 22 and processing unit 23.Pass through vortex-induced vibration
Monitoring system 20, can in the hoisting process of pylon accurate judgement vortex-induced vibration suppression device installation opportunity, wherein, pylon
The tower 10 for being stacked and being connected to each other including N sections, wherein N are the natural number more than 3.
Detection means 21, be arranged on first to a sections tower 10 form pylon presumptive test point at, for detect by
The vibration frequency in the first pylon lift direction formed to a sections tower 10, wherein a be more than 1, and less than or equal to N from
So number.
Data acquisition device 22, it is connected with detection means 21, for gathering by the first pylon formed to a sections tower 10
The vibration frequency in lift direction.
Processing unit 23, it is connected with data acquisition device 22, for based on by the first pylon formed to a sections tower 10
First vortex shedding frequency of pylon of the vibration frequency prediction in lift direction after the completion of N sections tower 10 lifts, and judge the
Whether one vortex shedding frequency meets preparatory condition, when the first vortex shedding frequency meets preparatory condition, it is determined that in lifting a+1
Vortex-induced vibration suppression device is installed on a+1 to N sections tower 10 respectively to during N section towers 10.
For above-mentioned detection device 21 specific mounting means may refer in above method embodiment to detection means
The corresponding description of 21 mounting means, therefore be not repeated here.
Above-mentioned processing unit 23 can be carried out the vibration frequency in the pylon lift direction detected including any
Calculate, draw the vortex shedding frequency of the pylon after the completion of lifting, and shedding frequence and preparatory condition can be contrasted, and
Judge whether vortex shedding frequency meets the computing device of preparatory condition, such as：Computer and processor etc. with CPU, herein
It is not defined.
Certainly, in specific implementation process, need to prestore corresponding preparatory condition in processing unit 23, such as in advance
First input intrinsic frequency of pylon etc..In a specific example, when installation direction and the pylon of detection means 21 bear load
Direction it is vertical when, above-mentioned preparatory condition is：90%fn ＜ bfv ＜ 110%fn, wherein, fn is the intrinsic frequency of pylon, and fv is
By the vibration frequency in the first to a sections tower 10 pylon lift direction formed, b is servo-actuated weight coefficient, and bfv is based on by the
The tower after the completion of N sections tower 10 lifts that the vibration frequency in the one pylon lift direction formed to a sections tower 10 predicts
First vortex shedding frequency of frame.
In an optional embodiment, for the ease of carrying, above-mentioned data acquisition device 22 and processing unit 23 are also
It can be integrated in same device.As shown in fig. 7, exemplarily, data acquisition device 22 and processing unit 23 are integrated in
One, form data processing equipment 20a.In addition, in certain embodiments, storage can also be equipped with data processing equipment 20a
Battery (not shown), in order to carry and use.
According to another embodiment of the invention, when the first vortex shedding frequency is unsatisfactory for preparatory condition, in a+1 section towers
After the completion of the lifting of cylinder 10, detection means 21 is additionally operable to, and is detected by the lift direction of the first pylon formed to a+1 sections tower 10
Vibration frequency.
Data acquisition device 22 is additionally operable to, and gathers shaking by the first pylon lift direction formed to a+1 sections tower 10
Dynamic frequency.
Processing unit 23 is additionally operable to, based on the vibration frequency by the first to a+1 sections tower 10 pylon lift direction formed
Second vortex shedding frequency of pylon of the rate prediction after the completion of N sections tower 10 lifts, and whether determine the second vortex shedding frequency
Meet preparatory condition, when the second vortex shedding frequency meets preparatory condition, it is determined that in lifting a+2 sections to N sections tower 10
When the vortex-induced vibration suppression device is installed on a+2 to N sections tower 10 respectively.
According to still a further embodiment, the tower 10 for being provided with vortex-induced vibration suppression device is being lifted into completion
Afterwards, it is necessary to when the validity that vortex-induced vibration suppression device is carried out to the pylon for being provided with vortex-induced vibration suppression device is verified,
Detection means 21 is additionally operable to, the current vortex shedding frequency of the pylon after the completion of detection integral hoisting.
Data acquisition device 22 is additionally operable to, and is connected with detection means 21, gathers pylon after the completion of above-mentioned integral hoisting
Current vortex shedding frequency.
Processing unit 23 is additionally operable to, and is connected with data acquisition device 22, and current vortex shedding frequency and preparatory condition are carried out
Contrast, judges whether current vortex shedding frequency meets preparatory condition, if current vortex shedding frequency is unsatisfactory for preparatory condition, judges
Vortex-induced vibration does not occur for pylon.
That is, if current vortex shedding frequency is unsatisfactory for preparatory condition, illustrate currently by installing vortex-induced vibration
Restraining device so that be unsatisfactory between the intrinsic frequency of the current vortex shedding frequency and pylon of the pylon after the completion of integral hoisting altogether
The occurrence condition to shake.So the vortex-induced vibration that pylon may be occurred by installing vortex-induced vibration suppression device serves effectively
Inhibitory action.And if meeting preparatory condition, then also need to carry out the problem of corresponding investigation, for example whether occur the system failure,
Whether vortex-induced vibration suppression device is installed in place.
In addition, vortex-induced vibration monitoring system 20 can not also include data acquisition device 22, can by detection means 21 with
Processing unit 23 is directly connected to send the vibration frequency data in corresponding lift direction to processing unit 23.
In an optional embodiment, vortex-induced vibration monitoring system 20 also includes warning device (not shown), shows
Example property, in the present embodiment, warning device can be integrated in processing unit 23.
Specifically, processing unit 23 is additionally operable to, and when the first vortex shedding frequency meets preparatory condition, is sent to warning device
Alarm command.
Warning device, for responding alarm command, give a warning prompting.
Warning prompt form has a variety of, for example, corresponding auditory tone cues can be sent, or sends corresponding message notifying
Deng.To prompt to install vortex-induced vibration suppression device in next section of tower 10 to be lifted, sentence thus, it is possible to quickly respond
Disconnected result, corresponding lifting operating procedure is performed, when further saving slinger.Certain warning device can be also used for when second
When vortex shedding frequency meets corresponding preparatory condition, give a warning prompting.
It should be noted that vortex-induced vibration monitoring system 20 according to embodiments of the present invention can be applied to according to of the invention real
Apply the executive agent of corresponding process step in the tower hoisting method of example, and each device in vortex-induced vibration monitoring system 20
Above and other operation and/or function respectively in order to realize the corresponding process step of method shown in Fig. 1 and Fig. 4, in view of with
Each process step is described in detail in upper embodiment of the method, for sake of simplicity, in vortex-induced vibration monitoring system
Repeated no more in 20 device embodiment.
The present invention can realize in other specific forms, without departing from its spirit and essential characteristics.Therefore, current reality
Apply example be all counted as being exemplary rather than in all respects it is limited, the scope of the present invention by appended claims rather than on
State description definition, also, fall into claim implication and equivalent in the range of whole change so as to all be included in this
Among the scope of invention.Also, the different technologies feature occurred in different embodiments can be combined, to obtain beneficial to effect
Fruit.Those skilled in the art will be understood that and realize disclosed on the basis of studying accompanying drawing, specification and claims
The embodiment of other changes of embodiment.
Claims (10)
1. a kind of tower hoisting method of wind power generating set, the pylon includes the tower that N sections are stacked and are connected to each other, wherein
N is the natural number more than 3, it is characterised in that the tower hoisting method includes：
Lifted successively to first to the N sections tower from the bottom to top；
After the completion of first to the tower lifting of a sections, detect by the first pylon lift side formed to a sections tower
To vibration frequency, wherein a be more than 1, and less than or equal to N natural number；
Work as the N sections tower based on being predicted by the vibration frequency in the first to a sections tower pylon lift direction formed
First vortex shedding frequency of the pylon after the completion of lifting, and judge whether first vortex shedding frequency meets preparatory condition；
When first vortex shedding frequency meets the preparatory condition, it is determined that in lifting a+1 towers described to N sections
Vortex-induced vibration suppression device is installed on a+1 to the N sections tower respectively.
2. tower hoisting method according to claim 1, it is characterised in that also include：By first to a sections tower
Installation detecting device at the presumptive test point for the pylon that cylinder is formed.
3. tower hoisting method according to claim 2, it is characterised in that the detection means includes：
Strain-ga(u)ge transducer, the strain-ga(u)ge transducer are installed in a manner of length direction is consistent with the bearing of trend of the pylon
On the tower wall of the tower；Or
Acceleration displacement transducer, the acceleration displacement transducer are arranged on by the first tower formed to a sections tower
The tip position of frame.
4. tower hoisting method according to claim 3, it is characterised in that also include：
On the tower wall of the tower set two strain-ga(u)ge transducers, and make two strain-ga(u)ge transducers with
The angle of the tower line of centres is in 90 °；Or
Three strain-ga(u)ge transducers described above are set on the tower wall of the tower, and make three foil gauges described above
Circumference of the sensor along the tower is uniformly distributed.
5. tower hoisting method according to claim 1, it is characterised in that also include：
When first vortex shedding frequency is unsatisfactory for the preparatory condition, then after the completion of the tower lifting of a+1 sections, inspection
Survey the vibration frequency by the first to a+1 sections tower pylon lift direction formed；
Work as the N sections tower based on being predicted by the vibration frequency in the first to a+1 sections tower pylon lift direction formed
Second vortex shedding frequency of the pylon after the completion of cylinder lifting, and determine whether second vortex shedding frequency meets the default bar
Part；
When second vortex shedding frequency meets the preparatory condition, it is determined that in lifting a+2 sections to the N sections tower
When the vortex-induced vibration suppression device is installed on a+2 to the N sections tower respectively.
6. the tower hoisting method according to any one of claim 2 to 5, it is characterised in that when the peace of the detection means
When dress direction is vertical with the direction that the pylon bears load, the preparatory condition is：
90%fn ＜ bfv ＜ 110%fn,
Wherein, the fn be the tower intrinsic frequency, the fv be the pylon lift direction vibration frequency, the b
To be servo-actuated weight coefficient.
7. a kind of vortex-induced vibration monitoring system of tower hoisting applied to wind power generating set, the pylon are stacked including N sections
And the tower being connected to each other, wherein N are the natural number more than 3, it is characterised in that the vortex-induced vibration monitoring system includes：
Detection means, it is arranged at the presumptive test point of the first pylon formed to a sections tower, for detecting by first
The vibration frequency in the pylon lift direction formed to a sections tower, wherein a are the nature more than 1, and less than or equal to N
Number；
Processing unit, it is connected with the detection means, for based on by the first pylon lift side formed to a sections tower
To pylon of the vibration frequency prediction after the completion of the lifting of the N sections tower the first vortex shedding frequency, and judge described the
Whether one vortex shedding frequency meets preparatory condition, when first vortex shedding frequency meets the preparatory condition, it is determined that
Vortex-induced vibration suppression device is installed on a+1 to the N sections tower respectively when lifting described to the N sections towers of a+1.
8. vortex-induced vibration monitoring system according to claim 7, it is characterised in that the detection means includes：
Strain-ga(u)ge transducer, the strain-ga(u)ge transducer are installed in a manner of length direction is consistent with the bearing of trend of the pylon
On the tower wall of the tower；Or
Acceleration displacement transducer, the acceleration displacement transducer are arranged on by the first tower formed to a sections tower
The tip position of frame.
9. vortex-induced vibration monitoring system according to claim 8, it is characterised in that
The detection means includes two strain-ga(u)ge transducers, and in two strain-ga(u)ge transducers and the tower
The angle of heart line is in 90 °；Or
The detection means includes three strain-ga(u)ge transducers described above, and three strain-ga(u)ge transducers described above are along institute
The circumference for stating tower is uniformly distributed.
10. the vortex-induced vibration monitoring system according to any one of claim 7 to 9, it is characterised in that when the detection means
Installation direction it is vertical with the direction that the pylon bears load when, the preparatory condition is：
90%fn ＜ bfv ＜ 110%fn,
Wherein, the fn be the tower intrinsic frequency, the fv be the pylon lift direction vibration frequency, the b
To be servo-actuated weight coefficient.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669695.6A CN107514344A (en) | 2017-08-07 | 2017-08-07 | Tower hoisting method of wind generating set and vortex-induced vibration monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669695.6A CN107514344A (en) | 2017-08-07 | 2017-08-07 | Tower hoisting method of wind generating set and vortex-induced vibration monitoring system |
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| CN107514344A true CN107514344A (en) | 2017-12-26 |
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ID=60722875
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| CN201710669695.6A Withdrawn CN107514344A (en) | 2017-08-07 | 2017-08-07 | Tower hoisting method of wind generating set and vortex-induced vibration monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223293A (en) * | 2018-01-29 | 2018-06-29 | 北京金风科创风电设备有限公司 | hoisting method for wind generating set |
| CN109578224A (en) * | 2019-01-31 | 2019-04-05 | 广东电网有限责任公司 | A kind of safety monitoring system of wind-power generating unit tower |
| CN112360684A (en) * | 2020-10-27 | 2021-02-12 | 中车株洲电力机车研究所有限公司 | Method for inhibiting vortex-induced vibration of fan |
| CN112524334A (en) * | 2020-11-27 | 2021-03-19 | 四川石油天然气建设工程有限责任公司 | Construction method for large-scale cable crossing of oil and gas pipeline and tower dynamic stabilization process thereof |
| CN114060231A (en) * | 2021-11-10 | 2022-02-18 | 中国华能集团清洁能源技术研究院有限公司 | Vortex-induced vibration monitoring system based on radio ranging and installation method |
-
2017
- 2017-08-07 CN CN201710669695.6A patent/CN107514344A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223293A (en) * | 2018-01-29 | 2018-06-29 | 北京金风科创风电设备有限公司 | hoisting method for wind generating set |
| CN109578224A (en) * | 2019-01-31 | 2019-04-05 | 广东电网有限责任公司 | A kind of safety monitoring system of wind-power generating unit tower |
| CN112360684A (en) * | 2020-10-27 | 2021-02-12 | 中车株洲电力机车研究所有限公司 | Method for inhibiting vortex-induced vibration of fan |
| CN112524334A (en) * | 2020-11-27 | 2021-03-19 | 四川石油天然气建设工程有限责任公司 | Construction method for large-scale cable crossing of oil and gas pipeline and tower dynamic stabilization process thereof |
| CN114060231A (en) * | 2021-11-10 | 2022-02-18 | 中国华能集团清洁能源技术研究院有限公司 | Vortex-induced vibration monitoring system based on radio ranging and installation method |
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Application publication date: 20171226 |