CN106679977A - Wind turbine generator variable pitch bearing monitoring method and apparatus - Google Patents
Wind turbine generator variable pitch bearing monitoring method and apparatus Download PDFInfo
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- CN106679977A CN106679977A CN201710001911.XA CN201710001911A CN106679977A CN 106679977 A CN106679977 A CN 106679977A CN 201710001911 A CN201710001911 A CN 201710001911A CN 106679977 A CN106679977 A CN 106679977A
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- max
- displacement
- pitch variable
- variable bearings
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Abstract
The invention discloses a wind turbine generator variable pitch bearing monitoring method and apparatus. The method includes the following steps: obtaining multiple axial displacements and multiple radial displacements corresponding to multiple positions in an inner ring of a variable pitch bearing at present, and finding the maximum axial displacement XO' and the maximum radial displacement YO'; and comparing the maximum axial displacement XO' and the maximum radial displacement YO' with the preset maximum axial displacement benchmark value Xmax and the preset maximum radial displacement benchmark value Ymax respectively, and outputting a variable pitch adjusting signal and/or an alarm signal if XO'>Xmax and/or YO'>Ymax. The wind turbine generator variable pitch bearing monitoring method and apparatus can prevent in advance, alarm in time and avoid losses by effectively monitoring displacements of the inner ring of the variable pitch bearing of a wind turbine generator.
Description
Technical field
The present invention relates to technical field of wind power generator, more particularly to a kind of Wind turbines pitch variable bearings monitoring method and
Device.
Background technology
Wind turbines pitch variable bearings are requisite main parts sizes in Wind turbines, are the portions for connecting blade and wheel hub
Part, with the function of carrying blade loading and vane propeller-changing.Due to current Wind turbines pitch variable bearings, mostly to be internal-gear type double same
Diameter four point touching ball bearing, and load is larger, service life is longer, thus to lubrication and seal and machining accuracy and material mechanical
The requirement of performance is higher.Require that its load must be in strength of materials allowed band in use.But reality is used
In, wind regime load is changeable, and the excessive situation of load is difficult to prevent completely, and load is excessive easily causes bearing inner race displacement deformation
It is excessive, accelerate the failure of bearing internal external circle, ball road and ring wear, or even cause the fracture of bearing internal external circle to cause leaf
The major accident that piece falls.
Once there is disabling damage in Wind turbines pitch variable bearings, it is necessary to by Wind turbines pitch variable bearings and leaf blade hanging extremely
Ground is changed, somewhat expensive, replacing trouble, has a strong impact on the generated energy of Wind turbines, causes heavy losses.In order to
The wear out failure of bearing is avoided in time, it is desirable to have the monitoring system and method for effect, but simply exist in the field in industry at present
Bearing heavy wear to a certain extent when just have monitoring, alarming, therefore, needing development one kind badly can prevent in advance, in time pre-
Alert, the preventive measure of real-time monitoring, so as to avoid the heavy wear of bearing, extends the service life of bearing, prevents heavy losses.
The content of the invention
It is an object of the invention to provide a kind of Wind turbines pitch variable bearings monitoring method and device, can be by effectively monitoring
The displacement of Wind turbines pitch variable bearings inner ring, realization prevents in advance, timely early warning, so as to avoid the heavy wear of bearing, extends
The service life of bearing, prevents heavy losses.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of Wind turbines pitch variable bearings monitoring method, including：Obtain on the multiple positions of current time pitch variable bearings inner ring
Corresponding multiple axial displacements and multiple radial displacements, therefrom find out maximum axial displacement XO' and maximum radial displacement YO’；By institute
State maximum axial displacement XO' and maximum radial displacement YO' respectively with default maximum axial displacement reference values XmaxAnd maximum radial
Displacement datum value YmaxMake comparisons, and in XO’>XmaxAnd/or YO’>YmaxWhen, output becomes oar adjustment signal and/or alarm signal.
It is described to obtain corresponding multiple axial directions on the multiple positions of current time pitch variable bearings inner ring as further improving
Displacement and multiple radial displacements are the shaft position sensors by being uniformly arranged on the multiple positions of the pitch variable bearings inner ring
With radial displacement transducer acquisition.
The shaft position sensor is arranged on axial section part of the bearing inner race near hub side, and the radial displacement is passed
Sensor is arranged on bearing inner race at the bearing inner surface of blade-side, the shaft position sensor and radial displacement transducer
Aligned in position, and respectively in 0 °, 90 °, 180 ° and 360 ° four location arrangements, wherein 0 ° of index aperture of 0 ° of position and bearing inner race
Alignment.
The default maximum axial displacement reference values XmaxWith maximum radial displacement datum value YmaxIt is to be managed according to finite element
By calculations incorporated wind field actual motion determination data obtain.
Also include：Obtain unit continuously to run in a time cycle, maximum axial displacement X occurO’>XmaxFrequency
Rate Mx, and there is the maximum radial displacement YO’>YmaxFrequency My；By frequency Mx and frequency My respectively with it is default
Maximum axial displacement frequency reference value Nx and maximum radial displacement frequency reference value Ny are made comparisons, and in Mx>Nx and/or My>Ny
When, output alarm signal.
One time cycle is 24 hours.
A kind of Wind turbines pitch variable bearings supervising device, including：First acquisition module, for obtaining current time pitch axis
Corresponding multiple axial displacements and multiple radial displacements on the multiple positions of inner ring are held, maximum axial displacement X is therefrom found outO' and most
Big radial displacement YO’；First judge module, for by maximum axial displacement XO' and maximum radial displacement YO' respectively with advance
If maximum axial displacement reference values XmaxWith maximum radial displacement datum value YmaxMake comparisons, and in XO’>XmaxAnd/or YO’>Ymax
When, output becomes oar adjustment signal and/or alarm signal.
Used as further improving, first acquisition module obtains right on the multiple positions of current time pitch variable bearings inner ring
The multiple axial displacements and multiple radial displacements answered are the axles by being uniformly arranged on the multiple positions of the pitch variable bearings inner ring
Obtain to displacement transducer and radial displacement transducer.
The shaft position sensor is arranged on axial section part of the bearing inner race near hub side, and the radial displacement is passed
Sensor is arranged on bearing inner race at the bearing inner surface of blade-side, the shaft position sensor and radial displacement transducer
Aligned in position, and respectively in 0 °, 90 °, 180 ° and 360 ° four location arrangements, wherein 0 ° of index aperture of 0 ° of position and bearing inner race
Alignment.
Also include reference value presetting module, for according to the measure number of the calculations incorporated wind field actual motion of finite element theory
According to the acquisition default maximum axial displacement reference values XmaxWith maximum radial displacement datum value Ymax。
Also include：Second acquisition module, continuously runs in a time cycle for obtaining unit, the greatest axis occurs
To displacement XO’>XmaxFrequency Mx, and there is the maximum radial displacement YO’>YmaxFrequency My；Second judge module, uses
In by frequency Mx and frequency My respectively with default maximum axial displacement frequency reference value Nx and maximum radial displacement frequency
Reference value Ny is made comparisons, and in Mx>Nx and/or My>During Ny, output alarm signal.
One time cycle is 24 hours.
At least there is advantages below due to adopting above-mentioned technical proposal, the present invention：
Present invention achieves the effective monitoring of Wind turbines pitch variable bearings, has filled up in industry at present to Wind turbines change oar
The blank in bearing running state monitoring field.Realized to deforming present in the operation of Wind turbines pitch variable bearings by the invention
Amount collection and analyze, carry out monitor in real time, can prevent in advance, timely early warning, it is to avoid pitch variable bearings deflection is excessive too late
Shi Xiuzheng and accelerate or directly contribute the disabling damage of pitch variable bearings.
Description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, below
With reference to accompanying drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is pitch variable bearings inner ring top offset sensor arrangement schematic diagram.
Fig. 2 be Fig. 1 in AA to schematic diagram.
Fig. 3 be Fig. 1 in BB to schematic diagram.
In figure：1- pitch variable bearings outer ring；2- pitch variable bearings inner rings；3- displacement transducer X1；4- displacements pass device X2；5- displacements
Sensors X 3；6- displacement transducer X4；7- displacement transducer Y1；8- displacement transducer Y2；9- displacement transducer Y3；10- displacements
Sensor Y4.
Specific embodiment
The present invention provides a kind of Wind turbines pitch variable bearings monitoring method, mainly includes the following steps that：Obtain current time
Corresponding multiple axial displacements and multiple radial displacements, therefrom find out maximum axial displacement on the multiple positions of pitch variable bearings inner ring
XO' and maximum radial displacement YO’；By maximum axial displacement XO' and maximum radial displacement YO' respectively with default greatest axis
To displacement datum value XmaxWith maximum radial displacement datum value YmaxMake comparisons, and in XO’>XmaxAnd/or YO’>YmaxWhen, output becomes
Oar adjusts signal and/or alarm signal.
Further, methods described also includes：Obtain unit continuously to run in a time cycle, the greatest axis occur
To displacement XO’>XmaxFrequency Mx, and there is the maximum radial displacement YO’>YmaxFrequency My；By frequency Mx and frequency
Rate My is made comparisons respectively with default maximum axial displacement frequency reference value Nx and maximum radial displacement frequency reference value Ny, and
Mx>Nx and/or My>During Ny, output alarm signal.
It is to obtain corresponding axial displacement and radial displacement on the multiple positions of pitch variable bearings inner ring in said method, can be
Wind turbines pitch variable bearings ring gear is evenly arranged installation shaft position sensor and radial displacement transducer.It is preferred that described
Shaft position sensor be installed on bearing inner race at the axial end of hub side, for monitoring the axial position of bearing inner race
Move；Described radial displacement transducer is installed on bearing inner race at the inner surface of blade-side, for monitoring bearing inner race
Radial displacement.
The above-mentioned Wind turbines pitch variable bearings monitoring method of the present invention is adapted to Wind turbines institute organic type, in each type
Application in, need that above-mentioned default reference value, i.e. maximum axial displacement reference values X is determined in advancemaxWith maximum radial displacement base
Quasi- value Ymax, and maximum axial displacement frequency reference value Nx and maximum radial displacement frequency reference value Ny.
It is preferred that the maximum displacement reference values Xmax、YmaxCan be gathered by finite element theory calculations incorporated wind field
Bearing operation measured data obtain.Here provide a kind of specific example to illustrate the adoptable feasible side of those skilled in the art
Method, it is to be noted that the invention is not limited in the method.
Specifically, above-mentioned maximum displacement reference values Xmax、YmaxEstablishing method can be according to following steps：According to finite element
Theoretical Calculation obtains the value of calculation of oepration at full load middle (center) bearing inner ring maximum axial displacement and maximum radial displacement；According to wind field reality
Border service data obtains the measured value of oepration at full load middle (center) bearing inner ring maximum axial displacement and maximum radial displacement；When the meter
The error of calculation value and measured value in 20% range of error of both smaller values, then the maximum axial displacement reference values XmaxWith
Maximum radial displacement datum value YmaxTake the meansigma methodss of the two；When the error of the value of calculation and measured value exceedes both smaller values
20%, then both are carried out second calculating with determine；When the value of calculation and measured value more than three errors still above
The 20% of both smaller values, then the maximum axial displacement reference values XmaxWith maximum radial displacement datum value YmaxInstitute in taking three times
State the minima of value of calculation and measured value.
Determine above-mentioned maximum axial displacement reference values XmaxWith maximum radial displacement datum value YmaxAfterwards, wind field actual measurement is counted
Data, obtain in fan bearing one time cycle of continuous operation and X occurO’>XmaxFrequency Nx, and there is YO’>YmaxFrequency
Rate Ny.For example, it is random from monthly data to obtain fan bearing continuously operation 24 hours in the data in 12 months years of wind field
Data and respectively statistics there is XO’>XmaxFrequency and there is YO’>YmaxFrequency, the maximum for finally taking 12 middle of the month makees
For frequency reference value Nx, Ny.
Do below in conjunction with practical application of the drawings and the specific embodiments to the monitoring method of the present invention on Wind turbines and have
Body explanation.
On Wind turbines during practical application, one kind can be developed based on the said method of the present invention and be integrated in Wind turbines
The pitch variable bearings monitoring system of control system, the monitoring system includes the shaft position sensor of monitoring bearing inner race and radial direction position
Displacement sensor, data acquisition and processing system, client display system.In for specific type application, described axial direction
Displacement transducer and radial displacement transducer are connected with data acquisition and processing system, and data acquisition and processing system is enterprising
One step connect setting client display system, described data acquisition and processing system is also connected with variable blade control system, and
Communication transfer mode and data form integrated can be communicated.
Here illustrate by taking 2MW types as an example.As shown in fig. 1, pitch variable bearings include 2,4 axles in outer ring 1 and inner ring
To displacement transducer 3,4,5,6 (number consecutively X1, X2, X3, X4) respectively according to 0 °, 90 °, 180 ° and 360 ° location arrangements in axle
Axial section part of the inner ring 2 near hub side is held, wherein 0 ° of position is alignd with 0 ° of index aperture of bearing inner race.Please coordinate Fig. 2,3
Shown, 4 radial displacement transducers 7,8,9,10 (number consecutively Y1, Y2, Y3, Y4) align with shaft position sensor, point
Not An Zhuan bearing inner race 2 at the bearing inner surface of blade-side.
After above-mentioned radial displacement transducer and shaft position sensor is arranged, sensor can monitoring record displacement number
According to, and blower fan is calculated by data Collection ＆ Processing System continuously X occurs in one time cycle of operationO’>XmaxFrequency
Rate Mx and there is YO’>YmaxFrequency My.Here a time cycle be preferred with 24 hours, can by daily 0 when when starting to 24
As the time cycle of 24 hours.Other durations can also be adopted.
Specifically, under oepration at full load state, shaft position sensor X1, X2, X3 and X4 are gathered respectively in Z-direction
On axial displacement, compare and obtain maximum of which axial displacement, be designated as XO’.I.e.：
XO'=max (X1, X2, X3, X4) formula is 1.
The radial displacement of shaft position sensor Y1, Y2, Y3 and Y4 in X-axis and Y direction is gathered respectively, is compared and is obtained
Maximum of which radial displacement, is designated as YO’.I.e.：
YO'=max (Y1, Y2, Y3, Y4) formula is 2.
Data acquisition and processing system Real-time Collection XO' and YO', and and XmaxAnd YmaxIt is compared, works as XO’>XmaxOr YO’
>YmaxWhen either case occurs, data acquisition and processing system gives pitch-controlled system, pitch-controlled system and time-varying oar signal transmission, adjusts
Completeblade angle, so as to change the load of pitch variable bearings.When pitch-controlled system can not and during time-varying oar, system automatic alarm.
Further, data acquisition and processing system also calculates blower fan and continuously runs in 24 hours and X occursO’>XmaxFrequency
Rate Mx and there is YO’>YmaxFrequency My.When actual motion is detected, frequency exceedes the frequency reference value of regulation, i.e. Mx>
Nx or My>During Ny, monitoring system also triggers automatic alarm.
By the displacement for passing through real-time monitoring bearing inner race using above technological means, the present invention, and then determine indirectly
The load condition of bearing, when the bearing inner race displacement for monitoring is excessive, i.e. when the load of bearing is excessive, can in time adjust axle
Position is held, when adjustment position fails, and alarm.Further, the present invention also monitors the appearance of bearing inner race over-large displacement amount
Frequency, when overload frequency occur and being too high, is also carried out and alarm, and realization prevents in advance major accident, is easy to staff more
It is new to safeguard.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention, this
Art personnel make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this
In bright protection domain.
Claims (12)
1. a kind of Wind turbines pitch variable bearings monitoring method, it is characterised in that include：
Corresponding multiple axial displacements and multiple radial displacements on the multiple positions of current time pitch variable bearings inner ring is obtained, is therefrom looked for
Go out maximum axial displacement XO' and maximum radial displacement YO’；
By maximum axial displacement XO' and maximum radial displacement YO' respectively with default maximum axial displacement reference values XmaxWith
Maximum radial displacement datum value YmaxMake comparisons, and in XO’>XmaxAnd/or YO’>YmaxWhen, output becomes oar adjustment signal and/or report
Alert signal.
2. a kind of Wind turbines pitch variable bearings monitoring method according to claim 1, it is characterised in that the acquisition is current
Corresponding multiple axial displacements and multiple radial displacements are by being uniformly arranged on the multiple positions of moment pitch variable bearings inner ring
State what shaft position sensor and radial displacement transducer on the multiple positions of pitch variable bearings inner ring were obtained.
3. a kind of Wind turbines pitch variable bearings monitoring method according to claim 2, it is characterised in that the axial displacement
Sensor is arranged on axial section part of the bearing inner race near hub side, and the radial displacement transducer is leaned on installed in bearing inner race
At the bearing inner surface of nearly blade-side, the shaft position sensor and radial displacement transducer aligned in position, and respectively 0 °,
90 °, 180 ° and 360 ° four location arrangements, wherein 0 ° of position is alignd with 0 ° of index aperture of bearing inner race.
4. a kind of Wind turbines pitch variable bearings monitoring method according to claim 1, it is characterised in that it is described it is default most
Big axial displacement reference values XmaxWith maximum radial displacement datum value YmaxIt is the calculations incorporated wind field reality according to finite element theory
What the determination data of operation was obtained.
5. a kind of Wind turbines pitch variable bearings monitoring method according to any one of claim 1-4, it is characterised in that also wrap
Include：
Obtain unit continuously to run in a time cycle, maximum axial displacement X occurO’>XmaxFrequency Mx, and go out
The existing maximum radial displacement YO’>YmaxFrequency My；
By frequency Mx and frequency My respectively with default maximum axial displacement frequency reference value Nx and maximum radial displacement frequently
Rate reference value Ny is made comparisons, and in Mx>Nx and/or My>During Ny, output alarm signal.
6. a kind of Wind turbines pitch variable bearings monitoring method according to claim 5, it is characterised in that one time
Cycle is 24 hours.
7. a kind of Wind turbines pitch variable bearings supervising device, it is characterised in that include：
First acquisition module, for obtaining on the multiple positions of current time pitch variable bearings inner ring corresponding multiple axial displacements and many
Individual radial displacement, therefrom finds out maximum axial displacement XO' and maximum radial displacement YO’；
First judge module, for by maximum axial displacement XO' and maximum radial displacement YO' respectively with default greatest axis
To displacement datum value XmaxWith maximum radial displacement datum value YmaxMake comparisons, and in XO’>XmaxAnd/or YO’>YmaxWhen, output becomes
Oar adjusts signal and/or alarm signal.
8. a kind of Wind turbines pitch variable bearings supervising device according to claim 7, it is characterised in that described first obtains
It is to pass through that module obtains corresponding multiple axial displacements and multiple radial displacements on the multiple positions of current time pitch variable bearings inner ring
What the shaft position sensor being uniformly arranged on the multiple positions of the pitch variable bearings inner ring and radial displacement transducer were obtained.
9. a kind of Wind turbines pitch variable bearings supervising device according to claim 8, it is characterised in that the axial displacement
Sensor is arranged on axial section part of the bearing inner race near hub side, and the radial displacement transducer is leaned on installed in bearing inner race
At the bearing inner surface of nearly blade-side, the shaft position sensor and radial displacement transducer aligned in position, and respectively 0 °,
90 °, 180 ° and 360 ° four location arrangements, wherein 0 ° of position is alignd with 0 ° of index aperture of bearing inner race.
10. a kind of Wind turbines pitch variable bearings supervising device according to claim 7, it is characterised in that also including benchmark
Value presetting module, for according to the determination data of the calculations incorporated wind field actual motion of finite element theory obtain it is described it is default most
Big axial displacement reference values XmaxWith maximum radial displacement datum value Ymax。
The 11. a kind of Wind turbines pitch variable bearings supervising devices according to any one of claim 7-10, it is characterised in that also
Including：
Second acquisition module, continuously runs in a time cycle for obtaining unit, maximum axial displacement X occursO’>
XmaxFrequency Mx, and there is the maximum radial displacement YO’>YmaxFrequency My；
Second judge module, for by frequency Mx and frequency My respectively with default maximum axial displacement frequency reference value Nx
Make comparisons with maximum radial displacement frequency reference value Ny, and in Mx>Nx and/or My>During Ny, output alarm signal.
12. a kind of Wind turbines pitch variable bearings supervising devices according to claim 11, it is characterised in that when one
Between the cycle be 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001911.XA CN106679977A (en) | 2017-01-03 | 2017-01-03 | Wind turbine generator variable pitch bearing monitoring method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001911.XA CN106679977A (en) | 2017-01-03 | 2017-01-03 | Wind turbine generator variable pitch bearing monitoring method and apparatus |
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| Publication Number | Publication Date |
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Family
ID=58850114
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710001911.XA Pending CN106679977A (en) | 2017-01-03 | 2017-01-03 | Wind turbine generator variable pitch bearing monitoring method and apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425300A (en) * | 2017-09-04 | 2019-03-05 | 中车株洲电力机车研究所有限公司 | The measuring device and measuring method of Wind turbines pitch variable bearings Internal and external cycle relative displacement |
| CN110967187A (en) * | 2019-12-11 | 2020-04-07 | 积成电子股份有限公司 | Early warning method and system for failure of variable-pitch bearing |
| CN111140432A (en) * | 2018-11-05 | 2020-05-12 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
| US11539317B2 (en) | 2021-04-05 | 2022-12-27 | General Electric Renovables Espana, S.L. | System and method for detecting degradation in wind turbine generator bearings |
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| US11539317B2 (en) | 2021-04-05 | 2022-12-27 | General Electric Renovables Espana, S.L. | System and method for detecting degradation in wind turbine generator bearings |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chu Jingchun Inventor after: Dong Li Inventor after: Gong Haiwei Inventor before: Dong Li Inventor before: Gong Haiwei |
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Application publication date: 20170517 |