CN106482694A - Tip clearance measurement sensor dynamic calibration apparatus under hot environment - Google Patents
Tip clearance measurement sensor dynamic calibration apparatus under hot environment Download PDFInfo
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- CN106482694A CN106482694A CN201611110399.4A CN201611110399A CN106482694A CN 106482694 A CN106482694 A CN 106482694A CN 201611110399 A CN201611110399 A CN 201611110399A CN 106482694 A CN106482694 A CN 106482694A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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Abstract
The present invention relates to tip clearance measurement sensor dynamic calibration apparatus under a kind of hot environment, belong to technical field of engines.This device includes high speed calibrating plate power set, standard clearance device, hot environment simulator, installation and protection device and synchronization system.The present invention adopts the actual high rotary speed working state of high speed turntable simulated engine, ensure that the calibration environment of gap measuring sensor is similar with electromotor actual rotation state, by designing suitable dish axle and its attachment structure, ensure device steady operation at high speeds, solve the problems, such as that existing tip clearance measurement sensor calibrating installation can only carry out static calibration.Additionally, preferably simulate the high-temperature work environment in sensor actual test by design hot environment simulator, achieve the compensation to high temperature calibration result in a calibration process.This set calibrating installation has structure simply, perfect in shape and function, the advantage such as calibration accuracy height.
Description
Technical field
The present invention relates to tip clearance measurement sensor dynamic calibration apparatus under a kind of hot environment, belong to engine technology
Field.
Background technology
Tip clearance is one of important parameter of impact engine performance, gap length for electromotor efficiency have very big
Impact.Tip clearance is bigger, and rotor safety is higher, but tip leakage is higher, and component efficiencies decline more.Reduction is started
The radial direction tip clearance of machine rotor, the loss in efficiency that minimizing is caused because of the leakage of working media, improves electromotor work
Aerodynamic stability, the performance improving electromotor further has highly important Research Significance.But if start to improve
Machine performance and reduce tip clearance simply and blade tip and touching of casing then may be led to rub, impact electromotor safety.How to design,
Control gap to make it the most suitable, to raising engine performance, ensure that its safety is extremely important.And reasonable design gap, close
Key is to get clear the actual change situation in gap, grasps its Changing Pattern.
Electromotor be generally operational in high temperature, high pressure, high rotating speed etc. severe under conditions of, the temperature born due to each part and
Stress deformation situation is different, and the tip clearance in its operation process is increasingly complex during dynamic change, particularly transition state.Always
For, the main cause of impact engine tip clearance change has the change of various load, temperature and transitive state rotating speed,
Wherein temperature and the change of rotating speed have a significant impact to tip clearance.Due to the complicated structure of electromotor and severe building ring
Border, the size of tip clearance leans on theoretical method accurately to calculate also certain difficulty it is necessary to measure to it in test.
Obtain accurate gap measurement, special equipment pair must be passed through before tip clearance measurement sensor uses
It is calibrated.This is because：Tip clearance measurement sensor measurement when, even if under identical gap condition, electromotor
The parameters such as the shape of blade tip, area are different, will result directly in the difference of tip clearance measurement result, and, different tip clearance
It is not linear relationship with corresponding measurement result, identical sensor corresponds to different engine blades and different blade tip positions
When there are different calibration curves, therefore, sensor to be calibrated before engine assembly.In addition, engine interior
Environment is complicated, and gap measurement is easily affected by temperature, medium, tested surface material etc., and measurement data is extremely complex, also requires that biography
Sensor must be calibrated to it using special calibrator (-ter) unit according to live practical service environment before use.
The domestic at present research to tip clearance measurement sensor collimation technique is at the early-stage, and each research unit also only builds
For each tip clearance measurement sensor used preliminary calibration system, and the environment temperature larger on calibration result impact
The problems such as degree, rotating speed, does not all solve, and there is a problem of that pick up calibration environment differs larger with actual test environment, and this will be straight
Connect the difference leading to gap measurement, hinder the design effectively of engine clearance and the lifting of engine performance.
CN103267503A discloses a kind of engine blade tip clearance measurement sensor dynamic calibration testing stand, invention
Testing stand be mainly made up of driving means, displacement platform mechanism and support frame mechanism.This invention efficiently solves starts
The dynamic calibration problem of machine blade-tip clearance measurement sensor, is disadvantageous in that and does not solve tip clearance measurement sensor
The hot environment problem needing in calibration process.Additionally, this patent also well consider high speed turntable in dish axle cooperation and
The problems such as between centers under fast state coordinates.And the present invention has taken into full account tip clearance survey in the design process of calibrating installation
The working condition of quantity sensor high rotating speed and high temperature during actual test, is that existing tip clearance measurement sensor is calibrated
Device effectively supplement and perfect.
Content of the invention
The invention aims to tip clearance is carried out under high temperature, high speed conditions to tip clearance measurement sensor
The dynamic calibration of measured value, and tip clearance measurement sensor dynamic calibration apparatus under a kind of hot environment are provided.
The purpose of the present invention is achieved through the following technical solutions.
Tip clearance measurement sensor dynamic calibration apparatus under hot environment, including high speed calibrating plate power set, standard
Inter space device, hot environment simulator, installation and protection device and synchronization system.Wherein, high speed calibrating plate power dress
Put including parts such as converter, high-speed electric expreess locomotive, yielding coupling, high-speed main spindle and calibrating plates；Standard clearance device is by standard
Displacement offer device and sensor installation seat composition；Hot environment simulator includes high-temperature gas heater and High Temperature Simulation
Casing wall；Install and protection device includes motor fixing seat, base plate, supporting box；Synchronization system includes tachometric survey and passes
Sensor and corresponding data acquisition and processing equipment.
Annexation is：Tip clearance measurement sensor is securedly mounted to the biography in standard clearance device by pre-load nut
In sensor mounting seat, this mounting seat is connected by bolt with the High Temperature Simulation casing wall on hot environment simulator, between blade tip
Gap measurement sensor is just right with the calibrating plate blade tip position in high speed calibrating plate power set；In hot environment simulator
Electric heater be connected with High Temperature Simulation casing wall by metal hose, high-temperature gas through high temperature air inlet tube enter high temperature mould
Intend casing wall, and tip clearance measurement sensor is heated, then discharged by high temperature air outlet；High speed calibrating plate moves
Power apparatus drive calibrating plate to rotate, and triggering calibrating plate corresponding synchronization system is monitored to leaf position simultaneously；Rotating speed
Measurement sensor is arranged on the upside of supporting box, simultaneously just to blade tip；Install and protection device is using overall rigidity base
Supporting box, two high-speed bearings are separately mounted to the casing left and right sides.
Work process is：Tip clearance measurement sensor is installed after fixing, adjustment standard clearance device makes between blade tip
Gap measurement sensor is just to calibrating plate blade tip position, and arranges standard clearance initial value；Open hot environment simulator
Tip clearance measurement sensor is heated, when temperature reaches calibration temperature, starts high speed calibrating plate power set, set
Corresponding rotating speed, calibrating plate rotating speed is maintained at calibration needs rotating speed, triggers synchronization system, tested blade is positioned,
Then tip clearance measurement sensor is calibrated, finally by the different standard clearance value of standard clearance device adjustment, real
Existing dynamic calibration in gamut scope for the tip clearance measurement sensor.
Wherein：
1) high speed calibrating plate power set：The function of high speed calibrating plate power set is that the stable rotation for calibrating plate provides
Power, the main converter including providing rotation speed change, the high-speed electric expreess locomotive providing direct driving force, enforcement motor and calibrating plate are reliable
The parts such as the yielding coupling, high-speed main spindle and the calibrating plate that connect.Converter setpoint frequency makes the working speed of high-speed electric expreess locomotive
It is maintained at the rotating speed that a certain constant calibration needs, be bolted connection between calibrating plate and high-speed main spindle, defeated with high-speed electric expreess locomotive
The close-connected yielding coupling of shaft drives calibrating plate and high-speed electric expreess locomotive synchronous axial system.In device, the rotating speed highest of motor can be protected
Hold more than per minute ten thousand turns, calibration requirements under different rotating speeds for the tip clearance measurement sensor can be met.
2) standard clearance device：The major function of standard clearance device is to carry for tip clearance measurement sensor calibration system
For standard clearance, it is made up of standard displacement offer device and sensor installation seat.Standard displacement offer device adopts coarse-fine combination
Mode be designed, to meet the required precision to clearance measurement for the different directions.It is mainly mutually vertical on direction by three
Straight displacement platform combination is constituted, and wherein the displacement platform precision prescribed on clearance measurement direction is sufficiently high, at least will reach micron amount
More than level, displacement platform is by step motor drive, and by laser interferometer, displacement platform precision is calibrated in advance.Other two
Displacement platform on direction is mainly used in tip clearance measurement sensor and blade tip are just being adjusted to position it is ensured that sensing
Installation situation in device calibration process is just consistent with sensor actual test process to position with blade.Due to this two displacement platforms
Only sensor is adjusted with blade tip relative position, relatively not high to required precision, realized using common displacement platform.Leaf
Intercuspal space measurement sensor is arranged in the sensor installation seat of design, and is compressed by pre-load nut.Sensor installation seat and height
High Temperature Simulation casing wall in temperature environmental simulation device is connected, and mounting seat is secured in place in moving stage by L-square, with displacement platform
Mobile.By the radial displacement of moving displacement mechanism thus changing tip clearance standard value.
3) hot environment simulator：During actual test, tip clearance measurement sensor is arranged on engine crankcase
On wall, the maximum temperature of this position can reach more than 600 DEG C.Hot environment simulator main analog tip clearance measures
High-temperature work environment in test process for the sensor.Special high-temperature gas heater and High Temperature Simulation is devised in device
Casing wall.High-temperature gas heater is made up of electric heater, metal hose, temperature sensor.High Temperature Simulation casing pars intramuralis
It is designed as sandwich cavity structure, tip clearance measurement sensor carries out forced convertion by high temperature gas flow to it in interlayer intracavity and changes
Heat, thus actual installation environment on engine high-temperature casing wall for the analog sensor.High-temperature gas heater will compress sky
After temperature degree is heated to the temperature range of alignment requirements, high temperature gas flow is imported to High Temperature Simulation casing wall by metal hose
In, sensor is heated to assigned temperature, is respectively arranged a temperature sensor in the upstream and downstream of High Temperature Simulation casing wall, is used for
Monitor interlayer cavity temperature, and be connected to temperature controller formation closed loop thermal and control the temperature constant it is ensured that in calibration process.
Additionally, according to actual gap measurement sensor type and calibration environment temperature requirement, electrical heating or light heating etc. may also be employed
Mode directly heats to tip clearance measurement sensor, realizes the control of higher temperature.
4) installation and protection device：Install and protection device mainly realizes the correlation corollary apparatus such as high-speed electric expreess locomotive and calibrating plate
Installation and protection, be mainly made up of motor fixing seat, base plate, supporting box.High-speed electric expreess locomotive is arranged in motor fixing seat,
Supporting box is fixed on base plate.In addition to supporting box smoothly acts on when supporting shafting, ensure calibrating plate in high-speed rotation,
Also act as protective action, ensure experimenter's safety in calibrating plate high-speed rotation.
5) synchronization system：Synchronization system mainly realizes tested leaf in tip clearance measurement sensor calibration process
The positioning of piece, main inclusion rotating speed measuring sensor and corresponding data acquisition and processing equipment.Laser fiber sensor, photoelectricity
Speed probe etc. can serve as rotating speed measuring sensor., in tip clearance measurement process taking photoelectric sensor as a example
In, according to the labelling being done before calibration, calibrating plate every revolution, photoelectric sensor all can carry to tip clearance measuring system
For a trigger pulse, because lobe numbers are fixing, each blade has the folder of a fixation with respect to trigger pulse
Angle, the position of therefore each blade can be determined by calculating, pass through to measure the pulse frequency of photoelectric sensor output simultaneously,
Can real-time monitoring device rotation speed change.
Beneficial effect
The present invention adopts the actual high rotary speed working state of high speed turntable simulated engine it is ensured that gap measuring sensor
Calibration environment is similar with electromotor actual rotation state, by designing suitable dish axle and its attachment structure it is ensured that device is in height
Steady operation under fast state, solves existing tip clearance measurement sensor calibrating installation and can only carry out asking of static calibration
Topic.Additionally, preferably simulate the high-temperature work environment in sensor actual test by design hot environment simulator,
The compensation to high temperature calibration result is achieved in calibration process.This set calibrating installation has structure simply, perfect in shape and function, calibration essence
Spend high advantage.
Brief description
Fig. 1 is the overall composition schematic diagram of tip clearance measurement sensor dynamic calibration apparatus under hot environment；
Fig. 2 is the cuing open of tip clearance measurement sensor dynamic calibration apparatus high speed calibrating plate power set under hot environment
View；
Fig. 3 is the side view of tip clearance measurement sensor dynamic calibration apparatus Plays inter space device under hot environment；
Fig. 4 is the structure of tip clearance measurement sensor dynamic calibration apparatus high temperature environment simulator under hot environment
Schematic diagram.
Reference：1- high-speed electric expreess locomotive, 2- yielding coupling, 3- high-speed main spindle, 4- locking nut, 5- calibrating plate, 6- turns
Fast measurement sensor, 7- high temperature air outlet, 8- pre-load nut, 9- electric heater, 10- high temperature air inlet tube, 11- displacement
Platform motor, 12- rack-and-pinion mobile station, 13- L-square, 14- High Temperature Simulation casing wall, 15- supporting box, 16- base plate,
17- motor fixing seat, 18- pressing plate, 19- second high-speed bearing, 20- axle head gland, 21- bearing gland, 22- box side, 23-
First high-speed bearing, 24- displacement platform stepper motor output shaft, 25- sensor pretension seat, 26- catch bar, 27,28- temperature sensing
Device, 29 metal hoses.
Specific embodiment
With reference to the accompanying drawings and examples, present disclosure is further detailed.
Embodiment
Fig. 1 is the overall composition schematic diagram of tip clearance measurement sensor dynamic calibration apparatus under hot environment, main bag
Include：High speed calibrating plate power set, standard clearance device, hot environment simulator and installation and protection device, rotating speed are same
The parts such as step system.Wherein, high speed calibrating plate power set include converter, high-speed electric expreess locomotive 1, yielding coupling 2, high-speed main spindle
3rd, the part such as locking nut 4 and calibrating plate 5；Standard clearance device by displacement platform motor 11, rack-and-pinion mobile station 12,
L-square 13 and sensor installation seat composition；Hot environment simulator includes high-temperature gas heater and High Temperature Simulation casing
Wall 14；Install and protection device includes motor fixing seat 17, base plate 16, supporting box 15；Synchronization system includes rotating speed and surveys
Quantity sensor 6 and corresponding data acquisition and processing equipment.
Annexation：Tip clearance measurement sensor is securedly mounted to the biography in standard clearance device by pre-load nut 8
In sensor mounting seat, this mounting seat is connected by bolt with the High Temperature Simulation casing wall 14 on hot environment simulator, blade tip
Gap measuring sensor is just right with the calibrating plate 5 blade tip position in high speed calibrating plate power set；Hot environment simulation dress
Electric heater 9 in putting is connected with High Temperature Simulation casing wall 14 by metal hose 29, and high-temperature gas is through high temperature air inlet tube
10 entrance High Temperature Simulation casing walls 14, and tip clearance measurement sensor is heated, then by high temperature air outlet 7 row
Go out；High speed calibrating plate power set drive calibrating plate 5 to rotate, and triggering calibrating plate corresponding synchronization system is to blade position simultaneously
Put and be monitored；Rotating speed measuring sensor 6 is arranged on the upside of supporting box 15, simultaneously just to blade tip；Install and protection dress
Put the supporting box 15 using overall rigidity base, two high-speed bearings 19,23 are separately mounted to the casing left and right sides.
High speed calibrating plate power set mainly include converter, high-speed electric expreess locomotive 1, the part such as high-speed main spindle 3 and calibrating plate 5,
Its composition sectional view is as shown in Figure 2.High-speed electric expreess locomotive 1 provides power for calibrating plate 5, and maximum speed is up to 12000r/min, permissible
Meet calibration requirements under different rotating speeds scope for the tip clearance measurement sensor.In calibration process, set not by converter
Same frequency changes the rotating speed of high-speed electric expreess locomotive 1.Rotor is driven to adopt horizontal mounting means, the first high-speed bearing 23 and the second high speed shaft
Hold 19 two ends being arranged on high-speed main spindle 3, high-speed main spindle 3 using overall rigidity base supporting way it is ensured that high-speed electric expreess locomotive 1
Output shaft is less than 0.02mm with the axis based error of high-speed main spindle 3.Axial restraint side is adopted between calibrating plate 5 and high-speed main spindle 3
Formula, blending bolt is fastenedly connected.In assembling process, the output shaft of high-speed electric expreess locomotive 1 is connected with one end of yielding coupling 2, elasticity
The other end of shaft coupling 2 connects high-speed main spindle 3.High-speed main spindle 3 is designed as stairstepping, to guarantee being accurately positioned of axial part
And be easy to dismount.On high-speed main spindle 3, the assembling of part is from left to right followed successively by locking nut 4, the first high-speed bearing 23, calibrating plate
5th, pressing plate 18, the second high-speed bearing 19, axle head gland 20.Further, since the actual blade shape of electromotor is more complicated, from blade tip
The collimation angle of gap measuring sensor is set out, and does not consider the change of blade profile bending, and calibrating plate 5 carries out letter to blade construction
Change, blade shape is rectangle prismatic blade, the number of blade 20 is along the circumferential direction spacedly distributed, calibrating plate 5 is bolted height
Fast main shaft 3 and pressing plate 18 fasten.Motor fixing seat 17 is bolted to connection high-speed electric expreess locomotive 1, supporting box 15 1 end bearing
Hole is fixedly connected the first high-speed bearing 23 by locking nut 4, and the dead eye of box side 22 passes through bearing gland 21 to be fixed even
Connect the second high-speed bearing 19.
Standard clearance device is made up of standard displacement offer device and sensor installation seat, and its side view is as shown in Figure 3.Mark
Level is moved offer device and is made up of orthogonal displacement platform on three directions and forms, and sensor installation seat is arranged on clearance measurement
On the displacement platform in direction.Displacement platform motor 11 is connected with top offset plate side by bolt, and catch bar 26 is by upper lower lock block
Compression, and it is bolted on bottom offset plate side.Displacement platform stepper motor output shaft 24 and catch bar 26 end thereof contacts, by
Displacement platform motor 11 drives displacement platform to move horizontally, and linear optical encoders are connected on displacement platform.Top offset plate
Top bolt fixed gear tooth bar mobile station 12.Tip clearance measurement sensor stretches in sensor pretension seat 25, by pre-
Jack panel 8 is fixing.Sensor installation seat is fixed on L-square 13, and is connected with rack-and-pinion mobile station 12 by bolt.Logical
Cross different-thickness pad adjustment retraction value in High Temperature Simulation casing wall for the tip clearance measurement sensor, analog sensor is actual
Installment state.
Hot environment simulator mainly includes the part such as high-temperature gas heater and High Temperature Simulation casing wall, and Fig. 4 is
The structural representation of this device, a whole set of air-flow heating system is driven by small-sized air compressor, and compressed air is out laggard from air compressor machine
Enter in electric heater 9, gas flow temperature is risen to the scope of job requirement by electric heater 9, then pass through metal hose 29 He
High temperature air inlet tube 10 enters in High Temperature Simulation casing wall 14, is cavity interlayer structure, in High Temperature Simulation casing in the middle of it
In wall 14, high temperature gas flow and tip clearance measurement sensor carry out forced-convection heat transfer, are heated to assigned temperature, Ran Houtong
Cross high temperature air outlet 7 and high-temperature gas is drained into outdoor.Arrange that two temperature pass in the upstream and downstream of High Temperature Simulation casing wall 14
Sensor 27 and 28, for monitoring interlayer cavity temperature, and this temperature sensor is connected to temperature controller formation closed loop thermal control
System.Exporting each part backward from electric heater 9 needs to carry out isothermal holding, to reduce temperature loss, avoids scalding examination simultaneously
Test personnel.
Install and protection device is mainly made up of supporting box 15, base plate 16, motor fixing seat 17.High-speed electric expreess locomotive 1 is installed
In motor fixing seat 17, supporting box 15 is bolted on base plate 16.Supporting box is except supporting shafting, ensureing school
Quasi- disk smoothly acts on outer in high-speed rotation, also acts as protective action, for calibrating plate in high-speed rotation Protection people
Member's safety.
Rotating speed measuring sensor 6 in synchronization system is arranged on the upside of supporting box 15, rotating speed measuring sensor 6
Pop one's head at just to blade tip, the other end connects tach signal collection and processing equipment, and it is carried out with tip clearance measuring system
Synchronous data collection and process, extract the tip clearance size on tested blade correspondence position.
Taking the calibration of microwave tip clearance measurement sensor as a example, using the process that this device is calibrated it is：
Prepare before 1 calibration and arrange
1) by the cable related to microwave tip clearance measurement sensor calibration system, adaptor, control system power supply even
Wiring etc. is accurately connected by connection request.
2) microwave tip clearance measurement sensor is fixed on the sensor installation seat of standard clearance device, by difference
Thickness pad adjusts retraction value in High Temperature Simulation casing wall for the microwave tip clearance measurement sensor.
3) finely tune the rack-and-pinion mobile station of standard clearance device, drive sensor installation seat to move, make between microwave blade tip
Gap measurement sensor is popped one's head in just to tested blade tip position.
2 pick up calibrations, record data
1) pass through displacement platform controller drive displacement platform motor to rotate, drive displacement platform to move horizontally, make micro-
Ripple tip clearance measurement sensor is gently contacted with blade tip, and this location records is zero shift.
2) standard clearance device is controlled to move to microwave tip clearance measurement sensor and blade tip distance by control software
The initial value position starting for calibration, such as 0.1mm.
3) electric heater and attemperating unit are started, by hot environment simulator by microwave tip clearance measurement sensor
It is heated to the calibration temperature specified.
4) start high-speed electric expreess locomotive, corresponding frequencies are arranged by converter, make high-speed electric expreess locomotive drive calibrating plate stable in calibration
Need rotating speed, record dynamic test data on this calibration point position for the microwave tip clearance measurement sensor.
5) standard clearance device is controlled by control software, mobile standard clearance value, such as with 0.5mm for interval, Zhi Daochuan
At sensor measurement range distalmost end, such as 6mm calibrating position, and record microwave tip clearance measurement sensor is calibrated different successively
Dynamic test data on position.
6) the measurement gap value on certain fixing leaf position is extracted by analysis software and synchronization system, by difference
The standard clearance value that microwave tip clearance measurement sensor the result of dynamic test on calibrating position is provided with standard clearance device
Contrasted, obtained the sensor dynamic calibration curve under this temperature conditions.
7) adjust motor, drive microwave tip clearance sensor to come back to initial calibration position, by electrical heating
Device and the ambient temperature of attemperating unit change sensor, repeat step 4)～6), obtain microwave tip clearance under different temperatures and survey
The dynamic calibration curve of quantity sensor.
Claims (10)
1. under hot environment tip clearance measurement sensor dynamic calibration apparatus it is characterised in that：Including high speed calibrating plate power
Device, standard clearance device, hot environment simulator, installation and protection device and synchronization system；Wherein, calibrate at a high speed
Disk power set include converter, high-speed electric expreess locomotive, yielding coupling, high-speed main spindle and calibrating plate, and standard clearance device is by marking
Level moves offer device and sensor installation seat composition, and hot environment simulator includes high-temperature gas heater and high temperature mould
Intend casing wall, install and protection device includes motor fixing seat, base plate, supporting box, synchronization system includes tachometric survey
Sensor and corresponding data acquisition and processing equipment；
Annexation is：Tip clearance measurement sensor is securedly mounted on sensor installation seat by pre-load nut, sensor
Mounting seat is connected by bolt with High Temperature Simulation casing wall, and tip clearance measurement sensor is with calibrating plate blade tip position just
Right；Electric heater in hot environment simulator is connected with High Temperature Simulation casing wall by metal hose；High speed calibrating plate moves
Power apparatus drive calibrating plate to rotate, and triggering calibrating plate corresponding synchronization system is monitored to leaf position simultaneously；Rotating speed
Measurement sensor is arranged on the upside of supporting box, simultaneously just to blade tip；Two high-speed bearings are separately mounted to install and protect
The supporting box left and right sides in protection unit；
Work process is：Tip clearance measurement sensor is installed after fixing, adjustment standard clearance device makes tip clearance survey
Quantity sensor is just to calibrating plate blade tip position, and arranges standard clearance initial value；Open hot environment simulator to leaf
Intercuspal space measurement sensor is heated, and when temperature reaches calibration temperature, starts high speed calibrating plate power set, sets corresponding
Rotating speed, calibrating plate rotating speed is maintained at calibration needs rotating speed, triggers synchronization system, tested blade is positioned, then
Tip clearance measurement sensor is calibrated, finally by the different standard clearance value of standard clearance device adjustment, realizes leaf
Dynamic calibration in gamut scope for the intercuspal space measurement sensor.
2. under hot environment according to claim 1 tip clearance measurement sensor dynamic calibration apparatus it is characterised in that：
In described high speed calibrating plate power set, converter setpoint frequency makes high-speed electric expreess locomotive be maintained at turning of a certain constant calibration needs
Speed, is bolted connection between calibrating plate and high-speed main spindle, with high-speed electric expreess locomotive output shaft close-connected yielding coupling band
Dynamic calibrating plate and high-speed electric expreess locomotive synchronous axial system.
3. tip clearance measurement sensor dynamic calibration apparatus under the hot environment according to claim 1 and 2, its feature exists
In：In described high speed calibrating plate power set, the rotating speed of high-speed electric expreess locomotive can be more than per minute ten thousand turns.
4. under hot environment according to claim 1 tip clearance measurement sensor dynamic calibration apparatus it is characterised in that：
In described standard clearance device, standard displacement offer device by three on direction orthogonal displacement platform combine and constitute；
By step motor drive, tip clearance measurement sensor is arranged in sensor installation seat displacement platform, and is compressed by pre-load nut,
Sensor installation seat is connected with High Temperature Simulation casing wall, and sensor installation seat is secured in place in moving stage by L-square, with displacement
Platform moves.
5. tip clearance measurement sensor dynamic calibration apparatus under the hot environment according to claim 1 and 4, its feature exists
In：Position in three orthogonal displacement platforms on direction of described standard displacement offer device, on clearance measurement direction
Moving stage precision prescribed reaches more than micron dimension, and the displacement platform in other both directions can adopt common displacement platform.
6. under hot environment according to claim 1 tip clearance measurement sensor dynamic calibration apparatus it is characterised in that：
In described hot environment simulator, high-temperature gas heater is made up of electric heater, metal hose, temperature sensor；
Electric heater is connected with High Temperature Simulation casing wall by metal hose, and high-temperature gas enters High Temperature Simulation through high temperature air inlet tube
Casing wall, and tip clearance measurement sensor is heated, then discharged by high temperature air outlet.
7. tip clearance measurement sensor dynamic calibration apparatus under the hot environment according to claim 1 and 6, its feature exists
In：In described hot environment simulator, High Temperature Simulation casing pars intramuralis is designed as sandwich cavity structure；Electrical heating can be adopted
Or the mode of light heating directly heats to tip clearance measurement sensor.
8. under hot environment according to claim 1 tip clearance measurement sensor dynamic calibration apparatus it is characterised in that：
In described installation and protection device, high-speed electric expreess locomotive is arranged in motor fixing seat, and supporting box is fixed on base plate.
9. tip clearance measurement sensor dynamic calibration apparatus under the hot environment according to claim 1 and 8, its feature exists
In：In described installation and protection device, supporting box is using overall rigidity base.
10. tip clearance measurement sensor dynamic calibration apparatus under hot environment according to claim 1, its feature exists
In：In described synchronization system, laser fiber sensor, photoelectric sensor can be used as rotating speed measuring sensors.
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| CN108663211A (en) * | 2017-03-30 | 2018-10-16 | 中国航发商用航空发动机有限责任公司 | The experimental rig of aero-turbine active clearance control system |
| 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 |
| CN109238125A (en) * | 2018-08-09 | 2019-01-18 | 中国航发沈阳发动机研究所 | Blade displacement adjustment controlling means and control system |
| CN109238721A (en) * | 2018-08-09 | 2019-01-18 | 中国航发沈阳发动机研究所 | Blade displacement calibrating installation |
| CN110333052A (en) * | 2019-04-10 | 2019-10-15 | 武汉理工大学 | High Temperature Rotating unit test platform |
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| CN109238721A (en) * | 2018-08-09 | 2019-01-18 | 中国航发沈阳发动机研究所 | Blade displacement calibrating installation |
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| CN110333052A (en) * | 2019-04-10 | 2019-10-15 | 武汉理工大学 | High Temperature Rotating unit test platform |
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| RU2763438C2 (en) * | 2019-06-20 | 2021-12-29 | ФГБОУ ВО "Оренбургский государственный аграрный университет" | Stand for setting up contactless sensors |
| CN110426208A (en) * | 2019-08-13 | 2019-11-08 | 中国航发贵阳发动机设计研究所 | A kind of high temperature strain gauge mounting process device for verifying reliability |
| CN110426208B (en) * | 2019-08-13 | 2021-06-22 | 中国航发贵阳发动机设计研究所 | High temperature strainometer mounting process reliability verification device |
| CN114485503A (en) * | 2022-01-04 | 2022-05-13 | 中国航空工业集团公司北京长城计量测试技术研究所 | Multifunctional multi-target circular motion standard device |
| CN114485503B (en) * | 2022-01-04 | 2023-07-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Multifunctional multi-target circular motion standard device |
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