CN216050598U - Auxiliary device for flow field test in closed section of wind turbine based on PIV system - Google Patents
Auxiliary device for flow field test in closed section of wind turbine based on PIV system Download PDFInfo
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- CN216050598U CN216050598U CN202121979423.4U CN202121979423U CN216050598U CN 216050598 U CN216050598 U CN 216050598U CN 202121979423 U CN202121979423 U CN 202121979423U CN 216050598 U CN216050598 U CN 216050598U
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 5
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- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses an auxiliary device for testing a flow field of a closed section of a wind turbine based on a PIV system, and relates to the technical field of flow field testing. Including wind-tunnel body, glass body, laser emitter, this internal test bottom plate of installing of wind-tunnel, be provided with fixed guide rail, regulation formula guide rail on the test bottom plate, it is provided with a plurality ofly to adjust the formula guide rail, adjust the formula guide rail with fixed guide rail passes through electric telescopic handle and connects. According to the auxiliary device for testing the flow field of the closed section of the wind turbine based on the PIV system, the distance between the fixed guide rail and the adjustable guide rail can be changed through the electric telescopic rod, so that the distance between the front wind turbine and the rear wind turbine can be adjusted conveniently according to needs, the position and the angle of the reflector can be adjusted through the arrangement of the telescopic rack, the gear, the power motor, the angle adjusting motor, the mounting disc and the reflector, a user can adjust conveniently according to needs, the automation degree is high, and the working strength of the tester can be effectively reduced.
Description
Technical Field
The utility model relates to the technical field of flow field testing, in particular to an auxiliary device for testing a flow field of a closed section of a wind turbine based on a PIV system.
Background
The main principle of the PIV technology is as follows: releasing tracing particles with good light reflection and following performance in a test flow field, wherein the diameter of the particles sprayed into the air is generally 1-3 mu m, a high-frequency laser and a CMOS high-speed camera work cooperatively through a synchronization technology, a target plane to be tested in the flow field is irradiated by laser, and the tracing particles have good light reflection and following performance and can be regarded as particles in fluid, so that the flow condition of the flow field at the position at the moment can be presented by monitoring the motion track of the tracing particles, and a synchronizer controls the CMOS high-speed camera to shoot a tracing particle picture of the plane to be tested while the particles in the flow field are illuminated by the laser;
after all the images of the particles in the flow field illuminated by the laser pulses have been recorded, the images are divided into a number of small areas, which are called interrogation zones. The method comprises the steps of performing cross-correlation calculation on each pixel in the inquiry areas I1 and I2 of two adjacent frames of images, enabling similar pixels to generate a peak signal, continuously shooting multiple frames of images at equal time intervals delta t in a preset acquisition time period through PIV, and calculating the positions of particles in the images by utilizing the two adjacent images through a cross-correlation calculation method to further calculate the distance, so that the average displacement of the particles is identified. And calculating according to the image acquisition interval time Deltat to obtain the velocity distribution condition of the particles. And repeatedly performing the cross-correlation operation on all the query areas in the target area to obtain a velocity vector diagram of the whole area to be tested. From the velocity proper amount, many information of the flow field can be solved, such as velocity field, vorticity field, and pulsation velocity root mean square, etc.
When a flow field of a wind turbine at a closed section of a wind tunnel is measured, a guide rail is usually required to be installed on a testing bottom plate, a sliding block is installed on the guide rail, the wind turbine is installed on the sliding block, the guide rail and the testing bottom plate are usually fixed through bolts at present, so that the bolts are required to be unscrewed and then reinstalled when the distance between adjacent guide rails is required to be adjusted, the working intensity of a tester is increased, in addition, the angle of laser at the emitting part of a laser emitter is required to be changed through a reflector during measurement, the reflector is usually required to be manually adjusted by a worker at present, and a great deal of inconvenience is brought to the tester.
SUMMERY OF THE UTILITY MODEL
The utility model provides an auxiliary device for testing a flow field of a closed section of a wind turbine based on a PIV system, which solves the technical problems that the distance between guide rails is inconvenient to adjust and a reflector is inconvenient to adjust the position and the angle.
In order to solve the technical problems, the auxiliary device for testing the flow field of the closed section of the wind turbine based on the PIV system comprises a wind tunnel body, a glass body and a laser emitter, wherein a testing bottom plate is installed in the wind tunnel body, a fixed guide rail and a plurality of adjustable guide rails are arranged on the testing bottom plate, the plurality of adjustable guide rails are connected with the fixed guide rail through electric telescopic rods, and the fixed guide rail and the adjustable guide rails are both provided with the wind turbine;
the testing bottom plate is internally provided with a telescopic rack in a penetrating manner, the telescopic rack is connected with a gear, the gear is connected with a power motor, the upper end of the telescopic rack is provided with an installation disc, a reflector is installed on the installation disc, the upper end of the telescopic rack is provided with an angle adjusting motor, and the angle adjusting motor is connected with the installation disc.
Preferably, the fixed guide rail is detachably and fixedly connected with the test bottom plate.
Preferably, the adjustable guide rail is clamped in the guide plate, and the adjustable guide rail and the guide plate can slide relatively.
Preferably, the fixed guide rail comprises a first lead screw, a first threaded sleeve is mounted on the first lead screw, one of the wind turbines is mounted on the first threaded sleeve, the first threaded sleeve and the testing bottom plate can slide relatively, a first position adjusting motor is mounted at one end of the first lead screw, and first bearing seats are mounted at two ends of the first lead screw.
Preferably, the first bearing seat is clamped in the guide plate, and the first bearing seat is connected with the test baseplate through a bolt.
Preferably, the regulation formula guide rail includes the second lead screw, install second threaded sleeve on the second lead screw, the second threaded sleeve with but test bottom plate relative slip, one of them the wind energy conversion system is installed on the second threaded sleeve, install second position control motor on the second lead screw, the second bearing seat is installed to the second lead screw, the second bearing seat card is gone into in the deflector, just the second bearing seat with but deflector relative slip.
Preferably, the testing bottom plate is provided with a manipulator, and the manipulator is provided with a target disc.
Preferably, the power motor is mounted on the test base plate.
Compared with the prior art, the auxiliary device for testing the flow field of the closed section of the wind turbine based on the PIV system has the following beneficial effects:
according to the auxiliary device for testing the flow field of the closed section of the wind turbine based on the PIV system, the distance between the fixed guide rail and the adjustable guide rail can be changed through the electric telescopic rod, so that the distance between the front wind turbine and the rear wind turbine is adjusted, and the adjustment is convenient as required;
according to the auxiliary device for testing the flow field of the closed section of the wind turbine based on the PIV system, the position and the angle of the reflector can be adjusted by arranging the telescopic rack, the gear, the power motor, the angle adjusting motor, the mounting disc and the reflector, so that a user can adjust the position and the angle conveniently as required, the automation degree is high, and the working strength of the tester can be effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary device for a flow field test of a closed section of a wind turbine based on a PIV system.
FIG. 2 is a left side view of the PIV system-based wind turbine closed section flow field test auxiliary device.
FIG. 3 is a right side view of the auxiliary device for testing the flow field of the wind turbine closed section based on the PIV system.
FIG. 4 is a schematic structural diagram of a testing bottom plate in an auxiliary device for testing a flow field of a closed section of a wind turbine based on a PIV system.
FIG. 5 is a schematic structural diagram of a point A in FIG. 4 in the PIV system-based wind turbine closed section flow field test auxiliary device.
FIG. 6 is a schematic structural diagram of a fixed guide rail in an auxiliary device for a flow field test of a closed section of a wind turbine based on a PIV system.
FIG. 7 is a connection diagram of a telescopic rack and a gear in an auxiliary device for a flow field test of a closed section of a wind turbine based on a PIV system.
Reference numbers in the figures: 1. a wind tunnel body; 2. a glass body; 3. a laser transmitter; 4. testing the bottom plate; 5. a fixed guide rail; 501. a first lead screw; 502. a first threaded sleeve; 503. a first position adjustment motor; 504. a first bearing housing; 6. adjusting guide rails; 601. a second lead screw; 602. a second threaded sleeve; 603. a second position adjustment motor; 604. a second bearing housing; 7. an electric telescopic rod; 8. a guide plate; 9. a wind turbine; 10. a manipulator; 11. a target disc; 12. a telescopic rack; 13. a gear; 14. a power motor; 15. an angle adjustment motor; 16. mounting a disc; 17. a mirror.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1-7, the wind tunnel comprises a wind tunnel body 1, a glass body 2 and a laser emitter 3, wherein a test bottom plate 4 is installed in the wind tunnel body 1, a fixed guide rail 5 and a plurality of adjustable guide rails 6 are arranged on the test bottom plate 4, the adjustable guide rails 6 are connected with the fixed guide rail 5 through electric telescopic rods 7, and wind turbines 9 are installed on the fixed guide rail 5 and the adjustable guide rails 6;
a telescopic rack 12 is inserted in the test bottom plate 4 in a penetrating manner, the telescopic rack 12 is connected with a gear 13, the gear 13 is connected with a power motor 14, a mounting disc 16 is arranged at the upper end of the telescopic rack 12, a reflecting mirror 17 is mounted on the mounting disc 16, an angle adjusting motor 15 is mounted at the upper end of the telescopic rack 12, and the angle adjusting motor 15 is connected with the mounting disc 16.
Example two
On the basis of the first embodiment, the fixed guide rail 5 includes a first lead screw 501, a first threaded sleeve 502 is installed on the first lead screw 501, one of the wind turbines 9 is installed on the first threaded sleeve 502, the first threaded sleeve 502 and the test base plate 4 can slide relatively, a first position adjusting motor 503 is installed at one end of the first lead screw 501, first bearing seats 504 are installed at two ends of the first lead screw 501, the first bearing seats 504 are clamped into the guide plate 8, and the first bearing seats 504 are connected with the test base plate 4 through bolts.
EXAMPLE III
On the basis of the first embodiment, the adjustable guide rail 6 includes a second lead screw 601, a second threaded sleeve 602 is mounted on the second lead screw 601, the second threaded sleeve 602 and the testing base plate 4 can slide relatively, one of the wind turbines 9 is mounted on the second threaded sleeve 602, a second position adjusting motor 603 is mounted on the second lead screw 601, a second bearing seat 604 is mounted on the second lead screw 601, the second bearing seat 604 is clamped into the guide plate 8, and the second bearing seat 604 and the guide plate 8 can slide relatively; the left and right positions of the wind turbine 9 can be conveniently adjusted.
Example four
The wind tunnel comprises a wind tunnel body 1, a glass body 2 and a laser emitter 3, wherein a test bottom plate 4 is installed in the wind tunnel body 1, a fixed guide rail 5 and an adjustable guide rail 6 are arranged on the test bottom plate 4, a plurality of adjustable guide rails 6 are arranged, the fixed guide rail 5 is detachably and fixedly connected with the test bottom plate 4, the adjustable guide rail 6 is connected with the fixed guide rail 5 through an electric telescopic rod 7, the adjustable guide rail 6 is clamped in a guide plate 8, the adjustable guide rail 6 and the guide plate 8 can slide relatively, and wind turbines 9 are installed on the fixed guide rail 5 and the adjustable guide rail 6;
the fixed guide rail 5 comprises a first lead screw 501, a first threaded sleeve 502 is mounted on the first lead screw 501, one of the wind turbines 9 is mounted on the first threaded sleeve 502, the first threaded sleeve 502 and the testing baseplate 4 can slide relatively, a first position adjusting motor 503 is mounted at one end of the first lead screw 501, first bearing seats 504 are mounted at two ends of the first lead screw 501, the first bearing seats 504 are clamped into the guide plate 8, and the first bearing seats 504 are connected with the testing baseplate 4 through bolts; the left and right positions of the wind turbine 9 can be conveniently adjusted;
the adjustable guide rail 6 comprises a second lead screw 601, a second threaded sleeve 602 is mounted on the second lead screw 601, the second threaded sleeve 602 and the test base plate 4 can slide relatively, one wind turbine 9 is mounted on the second threaded sleeve 602, a second position adjusting motor 603 is mounted on the second lead screw 601, a second bearing seat 604 is mounted on the second lead screw 601, the second bearing seat 604 is clamped in the guide plate 8, and the second bearing seat 604 and the guide plate 8 can slide relatively; the left and right positions of the wind turbine 9 can be conveniently adjusted;
the testing device is characterized in that a manipulator 10 is installed on the testing bottom plate 4, a target disc 11 is installed on the manipulator 10, a telescopic rack 12 is inserted into the testing bottom plate 4 in a penetrating mode, the telescopic rack 12 is connected with a gear 13, the gear 13 is connected with a power motor 14, the power motor 14 is installed on the testing bottom plate 4, a mounting disc 16 is arranged at the upper end of the telescopic rack 12, a reflecting mirror 17 is installed on the mounting disc 16, an angle adjusting motor 15 is installed at the upper end of the telescopic rack 12, and the angle adjusting motor 15 is connected with the mounting disc 16.
The working principle is as follows:
when the utility model is used, an external power supply and a controller are used, the distance between the fixed guide rail 5 and the adjustable guide rail 6 can be changed through the electric telescopic rod 7, further adjusting the distance between the front and the rear wind turbines 9, facilitating the adjustment according to the requirements, and meanwhile, by arranging the fixed guide rail 5 and the adjustable guide rail 6, the first screw 501 can be driven by the first position adjustment motor 503 to rotate, the first screw 501 can drive the first threaded sleeve 502 to move, further adjusting the left and right positions of the wind turbine 9, driving the second screw 601 to rotate by the second position adjusting motor 603, driving the second screw 601 to move the second threaded sleeve 602, the position of the wind turbine 9 is adjusted, so that testers can conveniently adjust the front-back distance between the left position and the right position of the wind turbine 9 and the adjacent guide rails according to needs, the diversity of test data can be improved, and the accuracy of test results can be improved;
through setting up flexible rack 12, gear 13, motor power 14, angle accommodate motor 15, mounting disc 16, speculum 17, the position and the angle of adjustable speculum 17 make things convenient for the user of service to adjust as required, degree of automation is high, can effectively reduce tester's working strength.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979423.4U CN216050598U (en) | 2021-08-20 | 2021-08-20 | Auxiliary device for flow field test in closed section of wind turbine based on PIV system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979423.4U CN216050598U (en) | 2021-08-20 | 2021-08-20 | Auxiliary device for flow field test in closed section of wind turbine based on PIV system |
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| CN216050598U true CN216050598U (en) | 2022-03-15 |
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| CN202121979423.4U Expired - Fee Related CN216050598U (en) | 2021-08-20 | 2021-08-20 | Auxiliary device for flow field test in closed section of wind turbine based on PIV system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115933109A (en) * | 2022-11-29 | 2023-04-07 | 哈尔滨工程大学 | Optical auxiliary system suitable for cross-medium inclined shooting of camera in multi-camera PIV test |
| CN117451304A (en) * | 2023-12-25 | 2024-01-26 | 石家庄铁道大学 | Measuring device for multi-body structure |
-
2021
- 2021-08-20 CN CN202121979423.4U patent/CN216050598U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115933109A (en) * | 2022-11-29 | 2023-04-07 | 哈尔滨工程大学 | Optical auxiliary system suitable for cross-medium inclined shooting of camera in multi-camera PIV test |
| CN117451304A (en) * | 2023-12-25 | 2024-01-26 | 石家庄铁道大学 | Measuring device for multi-body structure |
| CN117451304B (en) * | 2023-12-25 | 2024-03-26 | 石家庄铁道大学 | Measuring device for multi-body structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |