CN203824546U - Device for calibrating blade tip gap sensor - Google Patents
Device for calibrating blade tip gap sensor Download PDFInfo
- Publication number
- CN203824546U CN203824546U CN201420200604.6U CN201420200604U CN203824546U CN 203824546 U CN203824546 U CN 203824546U CN 201420200604 U CN201420200604 U CN 201420200604U CN 203824546 U CN203824546 U CN 203824546U
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- tip clearance
- impeller
- turning axle
- governor motion
- clearance sensor
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims description 23
- 230000005355 Hall effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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Abstract
The utility model discloses a device for calibrating a blade tip gap sensor. Specifically, the device is used for calibrating a blade tip gap sensor mounted on a casing. The device comprises an impeller rotating mechanism for mounting an impeller, and a gap adjusting mechanism for adjusting the displacement of a rotating shaft of the impeller rotating mechanism. The gap adjusting mechanism includes a first adjusting mechanism for adjusting the axial displacement of the rotating shaft, and a second adjusting mechanism for adjusting the radical displacement of the rotating shaft. Each of the first adjusting mechanism and the second adjusting mechanism corresponds to a grating ruler for detecting the displacement. The device also comprises a rotating speed sensor for measuring the rotating speed of the rotating shaft. According to the utility model, device is capable for calibrating the gap of a real blade so as to prevent the calibration result from being influenced by errors caused by repeated installation of the blade tip gap sensor, so that the calibration precision is improved, and the exact gap between the impeller blade tip and the casing can be reflected by the detection value of the blade tip gap sensor.
Description
Technical field
The utility model relates to sensor detection field, especially, relates to a kind of tip clearance sensor calibration apparatus for aeromotor.
Background technology
At present, be all both at home and abroad to verify the design of novel aeromotor and the improvement of engine, remodeling by test.Tip clearance directly affects the efficiency of engine, and gap is less, and efficiency is higher, if but gap is too small, the safety of entail dangers to engine.Therefore the gap in component test between accurate pilot blade and casing can effectively ensure to improve under the prerequisite of engine health the performance of engine, and checking design result is particularly important.Wherein, the calibration result of tip clearance sensor directly affects tip clearance measuring accuracy.
Mainly adopt the mode of simulation blade to carry out for the demarcation of tip clearance sensor both at home and abroad.This scaling method on the mount pad identical with casing material, uses a slice and real blade structured material similarly to simulate blade just to gap sensor tip clearance installation of sensors.Simulate the gap between blade and sensor installation seat by adjustment, gap width and sensor output value are carried out curve fitting to realize and demarcate.
But there is following shortcoming in existing scaling method:
1, there is difference in the geometric configuration of simulation blade and real blade, and simulation blade cannot embody the gap between real blade and true casing;
2,, in actual clearance test, fitting depth and the timing signal sensor of gap measuring sensor on casing cannot ensure in full accord at the fitting depth of demarcating on fixture.
Therefore, the demarcation mode of simulation blade has larger limitation in reality is used.
Utility model content
The utility model object is to provide a kind of tip clearance sensor calibration apparatus, the technical matters that cannot demarcate for the gap between real impeller blade tip and casing to solve existing tip clearance sensor.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of tip clearance sensor calibration apparatus, for the tip clearance sensor being arranged on casing is demarcated, comprises vane rotary mechanism for impeller is installed and for the turning axle of vane rotary mechanism being carried out to the clearance adjustment mechanism of adjustment of displacement;
Clearance adjustment mechanism comprises the first governor motion of the axial displacement for adjusting turning axle and for adjusting second governor motion of radial displacement of turning axle; The first governor motion, the second governor motion are all to there being detecting position to move the grating scale of distance;
Also comprise the speed probe of the rotating speed for measuring turning axle.
Further, also comprise processor, the input end of processor connects respectively output terminal, the output terminal of speed probe and the output terminal of tip clearance sensor of grating scale, the displacement data, the rotating speed of speed probe detection and the detection data of tip clearance sensor output that detect for receiving grating scale, and according to the gap between the rotating speed of impeller, impeller blade tip and casing, the detection data of tip clearance sensor output are demarcated.
Further, the drive end of turning axle is connected with the motor that drives its rotation, and turning axle is provided with the impeller fixture for fixing impeller, and turning axle is also connected with the measure speed gears with its synchronous rotary, and speed probe is relative with measure speed gears.
Further, speed probe is hall-effect speed sensor or photoelectric tachometric transducer.
Further, the first governor motion and the second governor motion are turbine and worm governor motion.
Further, vane rotary mechanism is arranged on mounting bracket, and mounting bracket is provided with outer cover, and vane rotary mechanism is positioned at outer cover inside.
The utlity model has following beneficial effect:
The utility model tip clearance sensor calibration apparatus, by being provided for installing the vane rotary mechanism of impeller, and adopt clearance adjustment mechanism to carry out displacement adjusting to the turning axle of vane rotary mechanism, adopt speed probe to detect the rotating speed of turning axle, reach after rated engine speed at impeller, according to the rotating speed recording, gap between impeller blade tip and casing is demarcated the detection data of tip clearance sensor, realize the gap of real blade has been demarcated, avoid tip clearance sensor that the impact of the error of bringing on calibration result is repeatedly installed, improve stated accuracy, thereby can truly reflect the gap between impeller blade tip and casing according to the detected value of tip clearance sensor.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic of the utility model preferred embodiment tip clearance sensor calibration apparatus; And
Fig. 2 is the structural representation of the utility model preferred embodiment tip clearance sensor calibration apparatus.
Description of reference numerals:
1, casing; 2, tip clearance sensor; 3, vane rotary mechanism; 31, turning axle; 32, motor; 33, impeller fixture; 34, measure speed gears; 4, impeller; 5, clearance adjustment mechanism; 51, the first governor motion; 52, the second governor motion; 6, speed probe; 7, processor; 8, mounting bracket; 81, locating ring; 9, outer cover.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1 and Fig. 2, preferred embodiment of the present utility model provides a kind of tip clearance sensor calibration apparatus, for the tip clearance sensor 2 being arranged on casing 1 is demarcated.In the present embodiment, to be arranged on actual casing 1 for detection of the tip clearance sensor 2 of clearance distance between casing 1 and impeller blade tip, the present embodiment tip clearance sensor calibration apparatus comprises the vane rotary mechanism 3 for impeller 4 is installed and carries out the clearance adjustment mechanism 5 of adjustment of displacement for the turning axle 31 to vane rotary mechanism 3.Wherein, clearance adjustment mechanism 5 comprises the first governor motion 51 of the axial displacement for adjusting turning axle 31 and for adjusting second governor motion 52 of radial displacement of turning axle 31; The first governor motion 51, the second governor motion 52 are all to there being detecting position to move the grating scale of distance; This caliberating device also comprises the speed probe 6 of the rotating speed for measuring turning axle 31.Impeller drive 3 impeller 4 are rotated, speed probe 6 is measured the rotating speed of impeller 4, in the process of rotating in vane rotary mechanism 3 impeller 4, regulate the axial displacement of turning axle 31 and/or regulate turning axle 31 displacement radially by the second governor motion 52 by the first governor motion 51, realize the adjustment in gap between impeller blade tip and casing 1; And in the present embodiment, the displacement of the displacement of the first governor motion 51 and the second governor motion 52 all can accurately detect through grating scale, the rotating speed of impeller 4 can detect through speed probe 6, like this, can demarcate the detection numerical value of tip clearance sensor 2 according to actual gap and tachometer value.The present embodiment, by being provided for installing the vane rotary mechanism of impeller 4, and adopt clearance adjustment mechanism 5 to carry out displacement adjusting to the turning axle 31 of vane rotary mechanism 3, adopt speed probe 6 to detect the rotating speed of turning axle 31, reach after rated engine speed at impeller 4, according to the rotating speed recording, gap between impeller blade tip and casing 1 is demarcated the detection data of tip clearance sensor 2, realize the gap of real blade has been demarcated, avoid tip clearance sensor that the impact of the error of bringing on calibration result is installed for more than 2 time, improve stated accuracy, thereby can truly reflect the gap between impeller blade tip and casing 1 according to the detected value of tip clearance sensor 2.
In the present embodiment, the first governor motion 51 and the second governor motion 52 all adopt turbine and worm governor motion, turning axle 31 carries out axial displacement under the promotion of the turbine and worm mechanism arranging vertically, and turning axle 31 carries out radial displacement under the promotion of the turbine and worm mechanism being disposed radially.It will be understood by those skilled in the art that the first governor motion 51 and the second governor motion 52 in the present embodiment can also adopt the realizations such as slider displacement mechanism.
Preferably, in the present embodiment, the drive end of turning axle 31 is connected with the motor 32 that drives its rotation, and turning axle 31 is provided with the impeller fixture 33 for fixing impeller 4, turning axle 31 is also connected with the measure speed gears 34 with its synchronous rotary, and speed probe 6 is relative with measure speed gears 34; Speed probe 6, by detecting the rotating speed of measure speed gears 34, can obtain the rotating speed of impeller 4, and speed probe 6 can be realized the location to tested blade.In the present embodiment, speed probe 6 is hall-effect speed sensor 6 or photoelectric tachometric transducer 6, and when impeller 4 often rotates a circle, 6 inductions of speed probe generate a pulse signal.
In order to improve stated accuracy, avoid the interference of the extraneous impurity accuracy of detection to tip clearance sensor 2, in the present embodiment, vane rotary mechanism 3 is arranged on mounting bracket 8, and mounting bracket 8 is provided with outer cover 9, and vane rotary mechanism 3 is positioned at outer cover 9 inside.Preferably, between mounting bracket 8 and outer cover 9, be provided with locating ring 81, locating ring 81 is for regulating the position of outer cover 9, to ensure the concentric installation of outer cover 9 and mounting bracket 8.
Preferably, in order to realize the intelligentized demarcation to tip clearance sensor 2, in the present embodiment, also comprise processor 7, the input end of processor 7 connects respectively output terminal, the output terminal of speed probe 6 and the output terminal of tip clearance sensor 2 of grating scale, the detection data of exporting for receiving displacement data, rotating speed that speed probe 6 detects and tip clearance sensor 2 that grating scale detects, and the detection data of tip clearance sensor 2 being exported according to the gap between the rotating speed of impeller 4, impeller blade tip and casing 1 are demarcated; The detection data that processor 7 is exported according to the gap between the rotating speed of impeller 4, impeller blade tip and casing 1, tip clearance sensor 2 are exported calibration curve automatically.In the present embodiment, tip clearance sensor 2 adopts capacitance type sensor, converts gap between impeller blade tip and casing 1 to capacitance signal output.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a tip clearance sensor calibration apparatus, for the tip clearance sensor (2) being arranged on casing (1) is demarcated, it is characterized in that, comprise the vane rotary mechanism (3) for impeller (4) is installed and carry out the clearance adjustment mechanism (5) of adjustment of displacement for the turning axle (31) to described vane rotary mechanism (3);
Described clearance adjustment mechanism (5) comprises first governor motion (51) of the axial displacement for adjusting described turning axle (31) and for adjusting second governor motion (52) of radial displacement of described turning axle (31); Described the first governor motion (51), described the second governor motion (52) are all to there being detecting position to move the grating scale of distance;
Also comprise the speed probe (6) of the rotating speed for measuring described turning axle (31).
2. tip clearance sensor calibration apparatus according to claim 1, is characterized in that,
Also comprise processor (7), the input end of described processor (7) connects respectively the output terminal of described grating scale, the output terminal of the output terminal of described speed probe (6) and described tip clearance sensor (2), the displacement data detecting for receiving described grating scale, the detection data of the rotating speed that described speed probe (6) detects and described tip clearance sensor (2) output, and according to the rotating speed of impeller (4), gap between impeller blade tip and casing (1) is demarcated the detection data of described tip clearance sensor (2) output.
3. according to the tip clearance sensor calibration apparatus described in claim 1 or 2, it is characterized in that,
The drive end of described turning axle (31) is connected with the motor (32) that drives its rotation, described turning axle (31) is provided with the impeller fixture (33) for fixing described impeller (4), described turning axle (31) is also connected with the measure speed gears (34) with its synchronous rotary, and described speed probe (6) is relative with described measure speed gears (34).
4. tip clearance sensor calibration apparatus according to claim 3, is characterized in that,
Described speed probe (6) is hall-effect speed sensor (6) or photoelectric tachometric transducer (6).
5. tip clearance sensor calibration apparatus according to claim 4, is characterized in that,
Described the first governor motion (51) and described the second governor motion (52) are turbine and worm governor motion.
6. tip clearance sensor calibration apparatus according to claim 5, is characterized in that,
Described vane rotary mechanism (3) is arranged on mounting bracket (8), described mounting bracket (8) is provided with outer cover (9), and described vane rotary mechanism (3) is positioned at described outer cover (9) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200604.6U CN203824546U (en) | 2014-04-23 | 2014-04-23 | Device for calibrating blade tip gap sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200604.6U CN203824546U (en) | 2014-04-23 | 2014-04-23 | Device for calibrating blade tip gap sensor |
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| CN203824546U true CN203824546U (en) | 2014-09-10 |
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| CN201420200604.6U Expired - Lifetime CN203824546U (en) | 2014-04-23 | 2014-04-23 | Device for calibrating blade tip gap sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466329A (en) * | 2015-11-23 | 2016-04-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Non-contact engine turbine blade tip radial gap measurement method |
| CN106403803A (en) * | 2016-08-22 | 2017-02-15 | 南京航空航天大学 | Blade tip clearance real-time measurement system and method based on constant voltage alternating current discharge |
| CN106482694A (en) * | 2016-12-06 | 2017-03-08 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration apparatus under hot environment |
| CN108931223A (en) * | 2018-07-06 | 2018-12-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration system and calibration method |
| CN112857300A (en) * | 2021-01-18 | 2021-05-28 | 国家能源集团龙源江永风力发电有限公司 | Precision calibration device and method for gap sensor |
-
2014
- 2014-04-23 CN CN201420200604.6U patent/CN203824546U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466329A (en) * | 2015-11-23 | 2016-04-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Non-contact engine turbine blade tip radial gap measurement method |
| CN106403803A (en) * | 2016-08-22 | 2017-02-15 | 南京航空航天大学 | Blade tip clearance real-time measurement system and method based on constant voltage alternating current discharge |
| CN106403803B (en) * | 2016-08-22 | 2018-08-21 | 南京航空航天大学 | A kind of tip clearance real-time measurement system and method based on constant pressure type alternating current discharge |
| CN106482694A (en) * | 2016-12-06 | 2017-03-08 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration apparatus under hot environment |
| CN108931223A (en) * | 2018-07-06 | 2018-12-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration system and calibration method |
| CN108931223B (en) * | 2018-07-06 | 2020-06-05 | 中国航空工业集团公司北京长城计量测试技术研究所 | Dynamic calibration system and calibration method for blade tip clearance measurement sensor |
| CN112857300A (en) * | 2021-01-18 | 2021-05-28 | 国家能源集团龙源江永风力发电有限公司 | Precision calibration device and method for gap sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
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| CX01 | Expiry of patent term |