CN202329890U - Pitch bearing working friction moment measurement device for wind turbine generator - Google Patents
Pitch bearing working friction moment measurement device for wind turbine generator Download PDFInfo
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- CN202329890U CN202329890U CN2011204983988U CN201120498398U CN202329890U CN 202329890 U CN202329890 U CN 202329890U CN 2011204983988 U CN2011204983988 U CN 2011204983988U CN 201120498398 U CN201120498398 U CN 201120498398U CN 202329890 U CN202329890 U CN 202329890U
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Abstract
The utility model provides a pitch bearing working friction moment measurement device for a wind turbine generator. The pitch bearing working friction moment measurement device comprises a loading shaft, a tested bearing, a strain ring, a test-accompanying bearing, a pitch drive device and an engine base, wherein the loading shaft is connected with a z-directional hydraulic cylinder along one side of the z direction, respectively connected with a first y-directional hydraulic cylinder and a second y-directional hydraulic cylinder along the y direction, and respectively connected with a first x-directional hydraulic cylinder and a second x-directional hydraulic cylinder along the x direction; the tested bearing is provided with a tested bearing inner ring and a tested bearing outer ring, and the tested bearing outer ring is arranged on the other side of the loading shaft along the z direction; a strain plate is attached to the strain ring; the test-accompanying bearing is provided with an test-accompanying bearing inner ring and an test-accompanying bearing outer ring, and the test-accompanying bearing inner ring is connected with the tested bearing inner ring through the strain ring; the pitch drive device is connected with the test-accompanying bearing inner ring; and the test-accompanying bearing outer ring is fixed on the engine base. The pitch bearing working friction moment measurement device can be nearly used for completely stimulating the loaded situation of a pitch bearing in the actual operating condition, so that the measurement result is closer to an accurate value than that of theoretical calculation, and the measurement process is convenient and simple.
Description
Technical field
The utility model relates to wind generating set pitch control bearing test platform, particularly a kind of wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism.
Background technology
For the wind power generating set that adopts the feather control strategy; When wind rating is following; Unit is caught more wind energy as much as possible; So at this moment there is no need to change the blade angle (propeller pitch angle) of facining the wind, the aerodynamic load of this moment is little than on wind rating the time usually, therefore also there is no need to regulate load through the change propeller pitch angle; When wind rating was above, feather control can effectively be regulated the load of wind power generating set absorbed power and impeller generation through changing propeller pitch angle, makes it not exceed the limit value of design; Its typical structure is as shown in Figure 1, and variable propeller pitch adjusting mechanism is similar to the pivoted loop of crane, and bearing is placed between blade 22 and the wheel hub 21, and bearing inner race 25 is fixed together with blade 22 usefulness bolts, and bearing outer ring 24 is fixed on the wheel hub 21.Rotate through drive unit 23 driving bearing inner rings 25, drive blade 22 rotations that are connected on the bearing inner race 25 and regulate propeller pitch angle.
From the above, when the wind-powered electricity generation unit work of adopting the feather control strategy, can drive unit driving bearing rotate flexibly the wind-powered electricity generation unit run well and play crucial effects.Under actual condition, drive unit wants driving bearing and rotates the moment of resistance mainly overcome and comprise bearing working moment of friction M
fWith blade in the aerodynamic load bear around bearing shaft to turning moment Mz.The turning moment Mz that blade bore generally through each operating mode of software simulation fan operation, can obtain more accurately; The bearing working moment of friction changes according to bearing stand under load situation, and pitch variable bearings mainly bears the load that blade transmits, and acts on and shows as upsetting moment M on the bearing
Xy, axial force F
zWith radial force F
XyIn most of the cases the designer all be through three load equivalence that bearing is suffered to the pressure of roller to track, choose the moment of friction of calculation bearing behind the suitable friction factor.But in the real work, the stressed and motion conditions of roller in track is not so idealized, and the variation of oil film thickness variation and bearing temperature is very big to the friction factor influence in the bearing operation.So certain gap is arranged through experimental formula calculating institute's value and practical bearing work moment of friction.
In order to obtain under each operating loading bearing frictional torque numerical value more accurately, so that choose suitable driving moment, reach the action of smooth adjusting propeller pitch angle, designed this bearing frictional torque measurement mechanism.
Summary of the invention
The purpose of the utility model is to provide a kind of wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism; It almost can simulate the stand under load situation under the pitch variable bearings actual operating mode fully; So more near exact value, measuring process is convenient and simple than Theoretical Calculation for measurement result.
For reaching above-mentioned purpose, the utility model provides a kind of wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism, and it comprises:
Load axle, along z to a side be connected to hydraulic cylinder with z, this loadings spool along y to being connected to hydraulic cylinder with the 2nd y to hydraulic cylinder with a y respectively, this loading spool along x to being connected to hydraulic cylinder with the 2nd x to hydraulic cylinder with an x respectively;
Measured bearing has measured bearing inner ring and measured bearing outer ring, the measured bearing outer ring be installed on load axle along z to opposite side;
The strain ring posts foil gauge on it;
Accompany the examination bearing, have and accompany the examination bearing inner race and accompany the examination bearing outer ring, the said examination bearing inner race of accompanying is connected with the measured bearing inner ring through the strain ring;
Become the oar drive unit, be connected with accompanying the examination bearing inner race;
Support accompanies the examination bearing outer ring to be fixed on this support.
Described wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism, wherein, said load axle along z to a side be connected with rear branching holder to hydraulic cylinder through z.
Described wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism wherein, loads axle and is connected with first base to hydraulic cylinder to passing through a y along y, and be connected with second base to hydraulic cylinder to passing through the 2nd y along y.
Described wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism, wherein, said change oar drive unit is installed in this support.
The beneficial effect of the utility model is: in the course of the work; Through exerting oneself of regulator solution cylinder pressure, be carried in the load on the measured bearing through loading the transmission of axle, regulating; Accompany examination bearing inner race, strain ring and measured bearing inner ring to rotate together; These three structures form a unified rotating beam, and the rotation of drive unit driven in rotation beam obtains variable-paddle bearing friction moment numerical value in the practical operation situation through the torsional deflection that detects middle strain ring.This measurement mechanism has almost completely been simulated the stand under load situation under the pitch variable bearings actual operating mode, thus measurement result than Theoretical Calculation more near exact value, measuring process is convenient and simple.
Needing supplementary notes at this, in the pitch variable bearings real work, is to link to each other with blade through bearing inner race, and bearing outer ring is fixed.So the suffered load of bearing is acted on the bearing inner race by blade, and the measured bearing outer ring of the utility model is connected with the loading axle, and load acts on the measured bearing outer ring through loading axle, and the measured bearing inner ring is fixed.Because the effect of power is mutual, so measured bearing is identical with the suffered magnitude of load of the bearing in the real work in the utility model, under this stand under load mode, the measured bearing moment of friction also just with in the actual condition conforms to so.
Description of drawings
Fig. 1 is the device synoptic diagram of typically sizing mixing;
Fig. 2 is the synoptic diagram of bearing working moment of friction measurement mechanism;
Fig. 3 is the enlarged drawing of A part among Fig. 2;
Fig. 4 is the synoptic diagram after the model simplification.
Description of reference numerals: 1-support; 2-accompanies the examination bearing; 21-accompanies the examination bearing inner race; 22-accompanies the examination bearing outer ring; 3-strain ring; The 4-measured bearing; 41-measured bearing inner ring; 42-measured bearing outer ring; 5-the one x is to hydraulic cylinder; 6-loads axle; 7-the 2nd x is to hydraulic cylinder; 8-z is to hydraulic cylinder; The 9-rear branching holder; The 10-base; 11-the 2nd y is to hydraulic cylinder; The 12-base; 13-the one y is to hydraulic cylinder; 14-becomes the oar drive unit; The 91-wheel hub; The 92-blade; The 93-drive unit; The 94-bearing outer ring; The 95-bearing inner race.
Embodiment
About the utility model is the application target that reaches above-mentioned and effect and the technological means that adopted, enumerate preferable feasible embodiment, and shown in the conjunction with figs., details are as follows at present:
As shown in Figures 2 and 3, be respectively the synoptic diagram and the partial enlarged drawing of bearing working moment of friction measurement mechanism.Wherein, described wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism includes: measured bearing 4, accompany examination bearing 2, strain ring 3, load axle 6, hydraulic cylinder (5,7,8,11,13), become oar drive unit 14, support 1 and base devices such as (10,12).
Described support 1 successively through accompanying examination bearing 2, strain ring 3, measured bearing 4 with load axle 6 and be connected.Specifically as shown in Figure 3, the measured bearing inner ring 41 of said measured bearing 4 is connected with the examination bearing inner race 21 of accompanying of accompanying examination bearing 2 through strain ring 3, and the measured bearing outer ring 42 of measured bearing 4 is connected with loading axle 6.
Said change oar drive unit 14 is installed in the support 1 and with accompanying examination bearing inner race 21 and is connected; Accompany the examination bearing outer ring to be fixed on the support 1; Change oar drive unit 14 drives accompanies examination bearing inner race 21 to rotate, and accompanies examination bearing inner race 21 drive strain rings 3 to rotate together with measured bearing inner ring 41 like this.
Said measured bearing 4 be installed on load axle 6 along z to a side, said loading axle 6 along z to opposite side be connected with rear branching holder 9 to hydraulic cylinder 8 through z.Said loading axle 6 is connected with first base 12 to hydraulic cylinder 13 to passing through a y along y, and is connected with second base 10 to hydraulic cylinder 11 to passing through the 2nd y along y.In addition, said loading axle also along x to being connected to hydraulic cylinder 7 with the 2nd x to hydraulic cylinder 5 with an x respectively.
The hydraulic loading system working method does; The x that the one x receives to hydraulic cylinder 7 simulation measured bearings 4 to hydraulic cylinder 5 and the 2nd x to power Fx and y to moment My; To moment Mx, z simulates z that measured bearings 4 receive to power Fz to hydraulic cylinder 8 to the y that the one y receives to hydraulic cylinder 11 simulation measured bearings to hydraulic cylinder 13 and the 2nd y to power Fy and x.Become oar drive unit 14 and drive measured bearings 4 and rotate according to certain direction and angular velocity, wherein x synthesizes the suffered radial force Fxy of measured bearing 4 to power Fx and y to power Fy; Wherein x to moment Mx and y to the suffered upsetting moment Mxy of the synthetic measured bearing of moment My 4; Z is the suffered axial force of measured bearing 4 to power Fz.
Hydraulic loading system loads to act on through multiple spot and loads on the axle, loads the axle transmitted load, finally makes upsetting moment, axial force and radial force under the measured bearing 4 suffered load simulated actual conditions.Accompany examination bearing inner race 21, strain ring 3 and measured bearing inner ring 41 to rotate together, these three structures form a unified rotating beam, and this rotating beam will overcome to accompany in the process of driving torque Mu driven in rotation and tries bearing frictional torque M
F1With measured bearing frictional resistance apart from M
F2, as shown in Figure 4 after the model simplification.That analyzes beam receives pili torti existing, is accompanying examination bearing frictional torque M
F1With measured bearing frictional resistance apart from M
F2Between this section beam torsional deflection all by measured bearing frictional resistance apart from M
F2Effect obtains, and can be found out the strain ring 3 in the corresponding measurement mechanism of above-mentioned twist section by the local amplification of the A of Fig. 2.The foil gauge that is attached on the strain ring can detail record measured bearing moment of friction M
F2Variation.
In sum, the utility model proposes a kind of pitch variable bearings work moment of friction measurement mechanism that is applicable to wind power generating set, can record the comparatively true moment of friction value of pitch variable bearings under each operating loading through the utility model.The measurement mechanism of the utility model configuration one cover hydraulic loading system, upsetting moment, axial force and radial force that the hydraulic cylinder concerted action through diverse location comes the real simulation pitch variable bearings in real work, to be born under the various working.Other has a cover measuring system, comprises devices such as strain ring, foil gauge, is used for the moment of friction numerical value of survey record at the different loads lower bearing.
The beneficial effect of the utility model is: in the course of the work; Through exerting oneself of regulator solution cylinder pressure; Through loading the transmission of axle; Constantly regulate and be carried in the load on the measured bearing, the rotation of drive unit driven in rotation beam obtains variable-paddle bearing friction moment numerical value in the practical operation situation through the torsional deflection that detects middle strain ring.This measurement mechanism has almost completely been simulated the stand under load situation under the pitch variable bearings actual operating mode, thus measurement result than Theoretical Calculation more near exact value, measuring process is convenient and simple.
Needing supplementary notes at this, in the pitch variable bearings real work, is to link to each other with blade through bearing inner race, and bearing outer ring is fixed.So the suffered load of bearing is acted on the bearing inner race by blade, and the measured bearing outer ring of the utility model is connected with the loading axle, and load acts on the measured bearing outer ring through loading axle, and the measured bearing inner ring is fixed.Because the effect of power is mutual, so measured bearing is identical with the suffered magnitude of load of the bearing in the real work in the utility model, under this stand under load mode, the measured bearing moment of friction also just with in the actual condition conforms to so.
More than be illustrative to the description of the utility model; And it is nonrestrictive; Those skilled in the art is understood, and within spirit that claim limits and scope, can carry out many modifications, variation or equivalence to it, but they will fall in the protection domain of the utility model all.
Claims (4)
1. a wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism is characterized in that, comprising:
Load axle, along z to a side be connected to hydraulic cylinder with z, this loadings spool along y to being connected to hydraulic cylinder with the 2nd y to hydraulic cylinder with a y respectively, this loading spool along x to being connected to hydraulic cylinder with the 2nd x to hydraulic cylinder with an x respectively;
Measured bearing has measured bearing inner ring and measured bearing outer ring, the measured bearing outer ring be installed on load axle along z to opposite side;
The strain ring posts foil gauge on it;
Accompany the examination bearing, have and accompany the examination bearing inner race and accompany the examination bearing outer ring, the said examination bearing inner race of accompanying is connected with the measured bearing inner ring through the strain ring;
Become the oar drive unit, be connected with accompanying the examination bearing inner race;
Support accompanies the examination bearing outer ring to be fixed on this support.
2. wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism according to claim 1 is characterized in that, said load axle along z to a side be connected with rear branching holder to hydraulic cylinder through z.
3. wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism according to claim 1 is characterized in that, loads axle and is connected with first base to hydraulic cylinder to passing through a y along y, and be connected with second base to hydraulic cylinder to passing through the 2nd y along y.
4. wind-powered electricity generation set pitch control bearing working moment of friction measurement mechanism according to claim 1 is characterized in that said change oar drive unit is installed in this support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204983988U CN202329890U (en) | 2011-12-02 | 2011-12-02 | Pitch bearing working friction moment measurement device for wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204983988U CN202329890U (en) | 2011-12-02 | 2011-12-02 | Pitch bearing working friction moment measurement device for wind turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202329890U true CN202329890U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204983988U Expired - Lifetime CN202329890U (en) | 2011-12-02 | 2011-12-02 | Pitch bearing working friction moment measurement device for wind turbine generator |
Country Status (1)
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| CN (1) | CN202329890U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353395A (en) * | 2013-05-27 | 2013-10-16 | 武汉理工大学 | Hydraulic loading device for large marine propulsion shafting test bed |
| CN108068992A (en) * | 2016-11-10 | 2018-05-25 | 浙江海洋大学 | A kind of Ultimate Strength of Ship Hull Girder experimental provision |
-
2011
- 2011-12-02 CN CN2011204983988U patent/CN202329890U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353395A (en) * | 2013-05-27 | 2013-10-16 | 武汉理工大学 | Hydraulic loading device for large marine propulsion shafting test bed |
| CN103353395B (en) * | 2013-05-27 | 2015-02-25 | 武汉理工大学 | Hydraulic loading device for large marine propulsion shafting test bed |
| CN108068992A (en) * | 2016-11-10 | 2018-05-25 | 浙江海洋大学 | A kind of Ultimate Strength of Ship Hull Girder experimental provision |
| CN108068992B (en) * | 2016-11-10 | 2020-06-02 | 浙江海洋大学 | Hull ultimate strength experimental device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |