CN104535236A - Method and equipment for positioning on-shaft load test point of wind generating set - Google Patents
Method and equipment for positioning on-shaft load test point of wind generating set Download PDFInfo
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- CN104535236A CN104535236A CN201410809648.3A CN201410809648A CN104535236A CN 104535236 A CN104535236 A CN 104535236A CN 201410809648 A CN201410809648 A CN 201410809648A CN 104535236 A CN104535236 A CN 104535236A
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- 238000012360 testing method Methods 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000005259 measurement Methods 0.000 claims abstract description 35
- 230000004807 localization Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The embodiment of the invention provides a method and equipment for positioning a load test point on a shaft of a wind generating set, wherein the method comprises the following steps: emitting first laser to the surface of a test shaft of the wind generating set through a laser emitting device, determining the position of a drop point of the first laser on the test shaft as a first measuring point on the test shaft, and enabling the emitting direction of the first laser and the central axis of the test shaft to be located in the same plane; turning over the laser emitting device around the central axis of the test shaft in a mirror image manner; emitting second laser to the surface of the test shaft through the turned laser emitting device, and determining the position of a drop point of the second laser on the test shaft as a second test point on the test shaft; and determining the first measuring point and the second measuring point as a group of measuring points on the measuring axis for load measurement. According to the technical scheme, the positions of the measuring points are accurately positioned before the axial load of the fan is tested, and the testing precision of the axial load is improved.
Description
Technical field
The present invention relates to technical field of wind power, particularly relate to localization method and the equipment of a kind of wind power generating set load on axle test measuring point.
Background technology
The upper load of wind power generating set (being called for short " unit ") axle (rotation axis or dead axle), such as moment of flexure and moment of torsion, obtain by measuring strain on axle.First two positions, place will be determined on axle surface, for the stickup of strainometer before measurement.In measuring process, strain is counted group bridge and is used, two strainometer institute paste positions on same bridge road should on a certain cross section circle of the axis perpendicular to axle, and relative to axis Central Symmetry, namely paste position was positioned on two end points of the diameter in the center of circle, above-mentioned cross section.
The paste position of strainometer is only had accurately to locate the above-mentioned load on axle data recorded of rear guarantee accurate.Classic method is mainly through manually using the paste position of the manual mode such as tape measure, ruler determination strainometer.But due to when determining paste position, unit axle is in confined state, and the usual non-cylindrical of unit axle, what have is even approximate circle cone shape on direction, axis, uses classic method probably to cause the paste position determined inaccurate, thus reduces the precision of the load on axle measured.
Summary of the invention
The localization method that embodiments of the invention provide a kind of wind power generating set load on axle to test measuring point and equipment, before realizing that load on axle test is carried out to blower fan, the accurately position of location measuring point, and then improve the measuring accuracy of load on axle.
For achieving the above object, The embodiment provides the localization method of a kind of wind power generating set load on axle test measuring point, comprising:
By test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, and the first measuring point drop point site of described first laser on test axle is defined as on described test axle, the transmit direction of described first laser and the axis of described test axle are positioned at same plane;
By the axis mirror image switch of described laser beam emitting device around described test axle;
By the described laser beam emitting device after upset to described test axle surface emitting second laser, and the drop point site of the second laser on test axle is defined as the second measuring point on described test axle;
Described first measuring point and described second measuring point are defined as the one group of measuring point described test axle being used for load test.
Embodiments of the invention additionally provide the positioning equipment of a kind of wind power generating set load on axle test measuring point, comprise: base and the laser beam emitting device be arranged on described base and angle measurement unit, in position fixing process, the Laser emission direction of described laser beam emitting device is positioned at same plane with the axis of test axle.
The localization method of the wind power generating set load on axle test measuring point that the embodiment of the present invention provides and equipment, by controlling in position fixing process, the Laser emission direction of laser beam emitting device remains the certain positional relationship being positioned at same plane with the axis testing axle; After determining the first measuring point by laser beam emitting device Emission Lasers, by the axis mirror image switch of laser beam emitting device around test axle; Determine the second measuring point by the laser beam emitting device Emission Lasers after upset, thus accurately find one group of measuring point for load test on test axle, and then improve the precision of the load on axle that follow-up test obtains.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of a localization method embodiment of wind power generating set load on axle provided by the invention test measuring point;
Fig. 2 a is a method schematic diagram of the localization method of wind power generating set load on axle provided by the invention test measuring point;
Fig. 2 b is another method schematic diagram of the localization method of wind power generating set load on axle provided by the invention test measuring point;
Fig. 3 is the method flow diagram of another embodiment of localization method of wind power generating set load on axle provided by the invention test measuring point;
Fig. 4 a is the front view of the positioning equipment of wind power generating set load on axle provided by the invention test measuring point;
Fig. 4 b is the positioning equipment left view of wind power generating set load on axle provided by the invention test measuring point;
Fig. 5 is the position relationship schematic diagram in the positioning equipment of wind power generating set load on axle provided by the invention test measuring point between the laser emission point of laser beam emitting device and straight contact portion;
Fig. 6 a is a structural representation of the base of the positioning equipment of wind power generating set load on axle provided by the invention test measuring point;
Fig. 6 b is another structural representation of the base of the positioning equipment of wind power generating set load on axle provided by the invention test measuring point;
Fig. 7 a is the base of positioning equipment and the position relationship front view of block of wind power generating set load on axle provided by the invention test measuring point;
Fig. 7 b is the base of positioning equipment and the position relationship left view of block of wind power generating set load on axle provided by the invention test measuring point.
Drawing reference numeral explanation
21-laser beam emitting device, 22-test the symmetrical plane in axle, 23-angle measurement unit, 24-base, 25-axis, 26-block, 27-flange, 28-straight contact portion, 29-two straight contact portions.
Embodiment
Embodiments of the invention, utilize two measuring points to be determined in the feature of the axis specular to test axle, by with above-mentioned axis for line of symmetry mirror image switch laser beam emitting device, and the laser launched with laser beam emitting device before and after mirror image is to be specified to two right measuring points.The technical scheme of the embodiment of the present invention goes for various wind power generating set.
Embodiment one
Fig. 1 is the method flow diagram of a localization method embodiment of wind power generating set load on axle provided by the invention test measuring point, and the method is complete by the equipment with Laser emission function.As shown in Figure 1, the localization method of this wind power generating set load on axle test measuring point specifically comprises:
S101, by test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, and the drop point site of the first laser on test axle is defined as testing the first measuring point on axle, the transmit direction of described first laser is positioned at same plane with the axis of test axle.
Above-mentioned laser beam emitting device can be specially laser instrument, laser pen etc.In conjunction with the method schematic diagram of the localization method of wind power generating set load on axle test measuring point as shown in Figure 2 a and 2 b.This step passes through laser beam emitting device 21 in the optional position of the test axle 22 near wind power generating set to test axle 22 surface emitting first laser, the drop point site of this first laser on test axle 22 is A, is defined as A point position testing the first measuring point on axle 22.Wherein, the transmit direction of described first laser is positioned at same plane with the axis 25 of test axle 22.
S102, by the axis mirror image switch of laser beam emitting device around test axle.
Composition graphs 2a and Fig. 2 b illustrated embodiment, after determining the first measuring point, by axis 25 mirror image switch of above-mentioned laser beam emitting device 21 around test axle 22.As in Fig. 2 a, laser beam emitting device 21 is turned to the lower left of test axle 22 by the upper left side testing axle 22 in figure; Or in Fig. 2 b, laser beam emitting device 21 is turned to immediately below test axle 22 by testing in figure directly over axle 22, and the position before and after upset is specular with axis 25.
S103, by the laser beam emitting device after upset to test axle surface emitting second laser, and is defined as testing the second measuring point on axle by the drop point site of the second laser on test axle.
Composition graphs 2a and Fig. 2 b illustrated embodiment, by the laser beam emitting device 21 after upset to test axle 22 surface emitting second laser, the drop point site of this second laser on test axle 22 is A ', is defined as by A ' testing the second measuring point on axle 22.
Here illustrate, the switching process of above-mentioned laser beam emitting device is mirror image switch, and the direction of the second laser that the laser beam emitting device after upset is launched still is positioned at same plane with the axis of test axle.
S104, is defined as testing one group of measuring point axle being used for load test by the first measuring point and the second measuring point.
Usually, the upper load of test unit axle (as above-mentioned test axle), such as moment of flexure and moment of torsion, obtain by measuring strain on axle.First two positions, place will be determined on axle surface, for the stickup of strainometer before measurement.This position, two places should on a certain cross section circle of the axis perpendicular to axle, and relative to the axis Central Symmetry of unit axle.By comparing, the first measuring point of determining of method shown in the present embodiment and the second measuring point meet the requirement of strainometer paste position corresponding when testing unit load on axle.Therefore, one group of measuring point that the first measuring point obtained by method step described in the present embodiment and the second measuring point can be defined as load test on above-mentioned test axle.In practical application scene, also can on above-mentioned test axle the good pending load test of chosen in advance a bit as above-mentioned first measuring point, the position of accommodation laser beam emitting device, makes it meet the requirement of the present embodiment location A point, and then carries out the measuring point location of particular point.
The localization method of the wind power generating set load on axle test measuring point that the embodiment of the present invention provides, by test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, and the drop point site of the first laser on test axle is defined as testing the first measuring point on axle, the transmit direction of described first laser is positioned at same plane with the axis of test axle; By the axis mirror image switch of laser beam emitting device around test axle; By the laser beam emitting device after upset to test axle surface emitting second laser, and the drop point site of the second laser on test axle is defined as testing the second measuring point on axle; First measuring point and the second measuring point are defined as testing one group of measuring point axle being used for load test.Present embodiments provide a kind of load on axle test is carried out to blower fan before, the accurately specific implementation of the position of location measuring point, and then improve the precision of the load on axle that follow-up test obtains.
Embodiment two
Fig. 3 is the method flow diagram of another embodiment of localization method of wind power generating set load on axle provided by the invention test measuring point, is a kind of specific implementation embodiment illustrated in fig. 1.The localization method of this wind power generating set load on axle test measuring point specifically comprises:
S301, by test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, and the drop point site of the first laser on test axle is defined as testing the first measuring point on axle, the transmit direction of described first laser is positioned at same plane with the axis of test axle; The concrete implementation of this step can see the corresponding contents of step 101.
S302, in the process of test axle surface emitting first laser by laser beam emitting device direction wind-driven generator group, the first angle-data that the current test of use angle measurement mechanism record obtains.
Wherein, this angle measurement unit can be specially the device that inclinator, gyroscope etc. have angle measuring function.In the present embodiment, by by above-mentioned angle measurement unit and laser beam emitting device synchronizing moving, the change in angular position situation that laser beam emitting device is measured in perception is carried out.Therefore, by in the process of test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, first angle-data that first will be obtained by the current test of angle measurement unit record is as the laser beam emitting device angle position corresponding when determining the first measuring point.
S303, by laser beam emitting device and angle measurement unit around the axis synchronous rotary testing axle, and recording angular measurement mechanism is tested and is obtained the second angle-data in rotary course.
In order to ensure laser beam emitting device and angle measurement unit synchronous rotary, rotate again after the relative position of two devices can being fixed.In rotary course, Real-Time Monitoring is also recorded angle measurement unit and is tested in rotary course and obtain the second angle-data.
S304, only change 180 ° is rotated around the axis testing axle when the second angle-data and the first angle-data show, laser beam emitting device before and after rotating is positioned at a plane of the axis of vertical checkout axle, and time equal to the distance of axis of test axle, the current location of laser beam emitting device is defined as its mirror position along the axis upset of test axle.
Shown in composition graphs 2a and Fig. 2 b, when angle measurement unit 23 and laser beam emitting device 21 are around axis 25 synchronous rotary testing axle 22, and the differential disply between the second angle-data corresponding after rotating and the first angle-data is it when only rotating change 180 ° around the axis 25 testing axle 22, characterize postrotational laser beam emitting device 21 and axis 25, laser beam emitting device 21 before rotation is positioned at same plane, and (the present embodiment is when procedures set forth principle, do not consider the spatial volume of laser beam emitting device 21 and angle measurement unit 23 itself, position " point " process can be regarded as).On its basis, if the laser beam emitting device also monitored before and after rotating is positioned at a plane of the axis of vertical checkout axle, and time equal to the distance of axis of test axle, then can determine that the current location of this postrotational laser beam emitting device 21 is the mirror position that it overturns along the axis 25 of test axle 22.
Above-mentioned steps S203 ~ S204 can be considered the refinement step of step 102.
Further, laser beam emitting device and angle measurement unit are co-located on a base by the present embodiment, are ensured the synchronous rotary of laser beam emitting device and angle measurement unit by rotating base.Meanwhile, when rotating base, also base can be rotated around test axle in the face of cylinder being bus with the axis testing axle, to ensure that the laser beam emitting device rotating front and back is equal to the distance of the axis of test axle.
Further, in practical application scene, the outer surface of the flange being positioned at test axle one end can be chosen as the above-mentioned face of cylinder being bus with the axis testing axle.So, in above-mentioned steps: by laser beam emitting device and angle measurement unit around the axis synchronous rotary testing axle, then can be specially, when determining the first measuring point, in advance above-mentioned base has been placed on the outer surface of the flange of test axle one end; Then the periphery of base around this flange is rotated, and ensure laser beam emitting device and angle measurement unit all the time with radii fixus around the axis synchronous rotary testing axle.As in Fig. 2 a and Fig. 2 b, above-mentioned rotary course can be: rotated the periphery of base 24 around the flange 27 of test axle 22 one end, and ensure that laser beam emitting device 21 and angle measurement unit 23 are with axis 25 synchronous rotary of radii fixus (radii fixus that laser beam emitting device 21 is corresponding with angle measurement unit 23 can be identical, also can be different) around test axle 22.Wherein, above-mentioned radii fixus is respectively laser beam emitting device 21 and angle measurement unit 23 when laser beam emitting device 21 launches the first laser, its separately position to the distance of axis 25.
Further, in practical application scene, base can also arrange at least one block, at base around in the rotary course of flange periphery, slide by keeping block and flange peripheral snap, to make base around flange periphery and to turn perpendicular to the plane internal rotation tested on the axis of axle, and then when ensureing transmitting second laser and launch the first laser, the reference position on the direction, axis of test axle of laser beam emitting device is identical.
Realized the axis mirror image switch of laser beam emitting device around test axle by method shown in this step.
S305, by the laser beam emitting device after upset to test axle surface emitting second laser, and is defined as testing the second measuring point on axle by the drop point site of the second laser on test axle; The concrete implementation of this step can see the corresponding contents of step 103.
S306, is defined as testing one group of measuring point axle being used for load test by the first measuring point and the second measuring point; The concrete implementation of this step can see the corresponding contents of step 104.
The localization method of the wind power generating set load on axle test measuring point that the embodiment of the present invention provides, on basis embodiment illustrated in fig. 1, grasps the anglec of rotation of laser beam emitting device in rotary course by introducing angle measurement unit; Ensure laser beam emitting device and angle measurement unit synchronous rotary by introducing base, and then replace the anglec of rotation of laser beam emitting device by the angle difference that angle measurement unit measurement obtains; By introduce block, and keep in rotary course block flange peripheral snap slide realize laser beam emitting device perpendicular to test axle axis a certain flat circle in rotate.Finally guarantee the axis mirror image switch of laser beam emitting device around test axle by the refinement of above step, improve performance accuracy.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Embodiment three
Fig. 4 a and Fig. 4 b is the structural representation of the positioning equipment of wind power generating set load on axle provided by the invention test measuring point, can be used for performing method step embodiment illustrated in fig. 1, as shown in figures 4 a and 4b, the positioning equipment of this wind power generating set load on axle test measuring point specifically comprises: base 24 and the laser beam emitting device 21 be arranged on base 24 and angle measurement unit 23, composition graphs 2a and Fig. 2 b illustrated embodiment, in concrete positioning action process, the Laser emission direction of laser beam emitting device 21 is positioned at same plane with the axis 25 of test axle 22.
Further, as shown in fig. 4 a, above-mentioned base 24 can have symmetrically arranged two straight contact portions 28.Time on flange periphery base 24 being placed into one end on test axle 22, straight contact portion 28 can form linear contact lay with flange, the bearing of trend in straight contact portion 28 and the axis parallel of test axle 22.The laser emission point of laser beam emitting device 21 is equal to the vertical range in two straight contact portions 28.
Fig. 5 for base 24 that the embodiment of the present invention provides be placed on flange 27 periphery of one end on test axle 22 time, the laser emission point P of laser beam emitting device 21 is to the position relationship schematic diagram in two straight contact portions 28.As shown in Figure 5, PB and PC is respectively the vertical range of P point to two straight contact portions 28, because two straight contact portions 28 are parallel, and PB=PC, PO then must be had to be positioned on the angular bisector of ∠ BPC, and wherein O point is the axis 25 of test axle 22 and the intersection point of plane BPC.
When making base 24 be slided to fit at flange 27 outer surface with flange 27 linear contact lay by straight contact portion 28, can ensure that laser emission point P is when rotating around axis 25, P point is constant to the distance of axis 25, and the direction of Laser emission to be in axis 25 in same plane (when the inceptive direction of Laser emission and axis 25 are in same plane) all the time.
Further, above-mentioned base 24 is on the whole in plane symmetry structure, and symmetrical plane is the symmetrical plane in above-mentioned two straight contact portions 28, plane 29 as shown in fig 4b, and laser emission point P is positioned on this symmetrical plane.
Further, above-mentioned base 24 along can in dovetail shaped as shown in Figure 6 a on the longitudinal cross-section of vertical plane of symmetry 29; Or gate as shown in Figure 6 b.As shown in Figure 6 a, the longitudinal cross-section of described symmetrical plane 29 is the plane perpendicular to two straight contact portions 28.
Further, be provided with the block 26 with the peripheral snap of flange 27 in the one end in straight contact portion 28 as shown in figs. 7 a and 7b, for limiting moving axially of base 24.
Such as shown in Fig. 2 a and Fig. 2 b, engage slidably between this block 26 with periphery of flange 27, make base 24 can only do the in rotary moving of laminating flange 27 periphery around axis 25, and mobile along the direction of axis 25 is limited.
The concrete using method of each parts of positioning equipment of the wind power generating set load on axle test measuring point shown in the present embodiment can the method step of embodiment shown in Figure 3, does not repeat its step principle at this.
The positioning equipment of the wind power generating set load on axle test measuring point that the embodiment of the present invention provides, comprise: base and the laser beam emitting device be arranged on base and angle measurement unit, in position fixing process, by the Laser emission direction of laser beam emitting device and the axis of test axle are remained in same plane, to complete the localization method of wind power generating set load on axle test measuring point.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a localization method for wind power generating set load on axle test measuring point, is characterized in that, comprising:
By test axle surface emitting first laser of laser beam emitting device direction wind-driven generator group, and the first measuring point drop point site of described first laser on test axle is defined as on described test axle, the transmit direction of described first laser and the axis of described test axle are positioned at same plane;
By the axis mirror image switch of described laser beam emitting device around described test axle;
By the described laser beam emitting device after upset to described test axle surface emitting second laser, and the drop point site of the second laser on test axle is defined as the second measuring point on described test axle;
Described first measuring point and described second measuring point are defined as the one group of measuring point described test axle being used for load test.
2. method according to claim 1, is characterized in that, described method also comprises:
In the process of described test axle surface emitting first laser by laser beam emitting device direction wind-driven generator group, the first angle-data that the current test of use angle measurement mechanism record obtains;
Described the axis mirror image switch of described laser beam emitting device around described test axle to be comprised:
By described laser beam emitting device and the angle measurement unit axis synchronous rotary around described test axle, and record described angle measurement unit and test in rotary course and obtain the second angle-data;
Only change 180 ° is rotated around the axis of described test axle when described second angle-data and described first angle-data show, described laser beam emitting device before and after rotating is positioned at a plane of the axis of vertical described test axle, and time equal to the distance of axis of described test axle, the current location of described laser beam emitting device is defined as the mirror position of its axis along described test axle upset.
3. method according to claim 2, is characterized in that, described laser beam emitting device and angle measurement unit are arranged on a base; Described described laser beam emitting device and the angle measurement unit axis synchronous rotary around described test axle to be comprised:
The periphery of described base around the flange of described test axle one end is rotated, and ensures described laser beam emitting device and angle measurement unit all the time with the axis synchronous rotary of radii fixus around described test axle.
4. method according to claim 3, is characterized in that, described base arranges at least one block; Described the flange periphery of described base around described test axle one end to be rotated, comprising:
At described base around in the rotary course of described flange periphery, described block and flange peripheral snap is kept to slide, to make described base around described flange periphery and a plane internal rotation on the axis perpendicular to described test axle turns.
5. the positioning equipment of a wind power generating set load on axle test measuring point, it is characterized in that, comprise: base and the laser beam emitting device be arranged on described base and angle measurement unit, in position fixing process, the Laser emission direction of described laser beam emitting device is positioned at same plane with the axis of test axle.
6. positioning equipment according to claim 5, it is characterized in that, described base has symmetrically arranged two straight contact portions, time on the flange periphery described base being placed into one end on described test axle, described straight contact portion and described flange form linear contact lay, the bearing of trend in described straight contact portion and the axis parallel of described test axle
The laser emission point of described laser beam emitting device is equal to the vertical range in described two straight contact portions.
7. positioning equipment according to claim 6, is characterized in that, described base is on the whole in plane symmetry structure, and symmetrical plane is the symmetrical plane in described two straight contact portions, and described laser emission point is positioned on described symmetrical plane.
8. positioning equipment according to claim 7, is characterized in that, the longitudinal cross-section along vertical described symmetrical plane of described base is dovetail shaped or gate.
9. the positioning equipment according to any one of claim 5-8, is characterized in that, the one end in described straight contact portion is provided with the block with the peripheral snap of described flange, for limiting moving axially of base.
10. positioning equipment according to claim 9, is characterized in that, engages slidably between described block with the periphery of described flange.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410809648.3A CN104535236B (en) | 2014-12-23 | 2014-12-23 | Method and equipment for positioning on-shaft load test point of wind generating set |
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| CN201410809648.3A CN104535236B (en) | 2014-12-23 | 2014-12-23 | Method and equipment for positioning on-shaft load test point of wind generating set |
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| CN104535236B CN104535236B (en) | 2016-11-09 |
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| CN105241435A (en) * | 2015-11-02 | 2016-01-13 | 三一汽车起重机械有限公司 | Laser positioning device |
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| Publication number | Publication date |
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| CN104535236B (en) | 2016-11-09 |
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