CN202903144U - Blade tip clearance image measurement actuating mechanism - Google Patents
Blade tip clearance image measurement actuating mechanism Download PDFInfo
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- CN202903144U CN202903144U CN 201220600332 CN201220600332U CN202903144U CN 202903144 U CN202903144 U CN 202903144U CN 201220600332 CN201220600332 CN 201220600332 CN 201220600332 U CN201220600332 U CN 201220600332U CN 202903144 U CN202903144 U CN 202903144U
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- guide rail
- linear motion
- axis linear
- rail system
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Abstract
The utility model discloses a blade tip clearance image measurement actuating mechanism, which comprises an X-axis linear motion guide rail system, a Y-axis linear motion guide rail system and a Z-axis linear motion guide rail system, wherein the Z-axis linear motion guide rail system is provided with at least one image collector; connection among the X-axial linear motion guide rail system, the Y-axis linear motion guide rail system and the Z-axis linear motion guide rail system is realized through orthogonality; the X-axis linear motion guide rail system, the Y-axis linear motion guide rail system and the Z-axis linear motion guide rail system are provided with motors respectively, and relative sliding among the systems is realized through driving devices. The measurement efficiency and the measurement precision are increased, and the working condition is improved through adopting the technical solution disclosed by the utility model, auxiliary motion equipment of an image measuring instrument can be controlled rapidly and accurately, and the foundation is laid for follow-up blade tip clearance measurement.
Description
Technical field
The utility model relates to the tip clearance field of measuring technique of engine, is specifically related to the Eikonometric topworks of a kind of tip clearance.
Background technology
The tip clearance of aeromotor generally refers to the radial play between engine rotor blade and the casing.Tip clearance is a basic measurement parameter in the reseach of engine process, also is the important component part of the control of engine assembly process tip clearance, health control and fault diagnosis etc. simultaneously.
In modern aeroengine, tip clearance is quite remarkable on the impact of the oil consumption of the efficient of pneumatic plant and turbine, engine and stability, and rear what the effectiveness affects to high-pressure turbine and high-pressure compressor is more outstanding especially.For reliability and the economy of Effective Raise engine, research institution both domestic and external and institution of higher learning have all successively carried out the research of aeromotor tip clearance problem.
At present both at home and abroad research mostly be tip clearance Detection ﹠ Controling under the engine operating condition, and mainly concentrate on again on the active clearance control method, namely according to the duty of engine, control artificially the swell increment of casing or rotor, so that the thermal response of rotor and stator reaches preferably coupling, as far as possible little in high cruise state gap, and disturb friction in the unlikely generation of other state.According to U.S. GE company researching and analysing the CF5-50 engine, tip clearance accounts for 67% of blade profile and clearance seal total losses to the impact of oil consumption rate, Britain RR company studies show that modern gas turbine engines, 1% of the every increase length of blade of tip clearance, and efficient reduces by 1.5% approximately; And the every reduction by 1% of efficient, oil consumption rate increases by 2% approximately.Therefore, under the prerequisite that the parts collision does not occur, should reduce tip clearance as far as possible.
The domestic tip clearance that adopts especially in the relatively original clearance gauge measurement assembling process, the clearance gauge measuring method depends on operant level and the experience of survey crew to a great extent, easily with the equadag coating scratch of blade, the measuring accuracy of this method is not high, and work efficiency is very low yet simultaneously.
Tip clearance is carried out fast and accurate measurement in the engine assembly process, for processing and assembly precision provide foundation, mainly is concentricity, casing, the wheel disc of rotor, the ovality of sound blade tip etc., provides foundation for the operational test behind the engine assembly simultaneously.Also almost be not applied at home at present the image measuring system of the engineering practice of engine tip clearance measurement, so the theory and technology aspect machinery control and radiographic measurement is also very weak, need further further investigation.
The utility model content
The utility model has overcome the deficiencies in the prior art, provide a kind of tip clearance Eikonometric topworks, in order to improve measurement efficient, measuring accuracy and to improve working conditions, synkinesia equipment to image measurer carries out fast accurate control, for follow-up tip clearance measurement lays the foundation.
Consider the problems referred to above of prior art, according to the disclosed aspect of the utility model, the utility model by the following technical solutions:
The Eikonometric topworks of a kind of tip clearance comprises:
X-axis linear motion guide rail system;
Y-axis linear motion guide rail system;
Z axis linear motion guide rail system is provided with at least one image collection device in this Z axis linear motion guide rail system;
Described X-axis linear motion guide rail system, Y-axis linear motion guide rail system are connected quadrature and realize connecting with the Z axis linear motion guide rail three of system, and respectively are provided with drive unit on the three, realize relative sliding by drive unit between the three.
In order to realize better the utility model, further technical scheme is:
In one of them embodiment of the utility model, described X-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, described Y-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, and described Z axis linear motion guide rail system comprises two guide rails that are arranged in parallel.
In one of them embodiment of the utility model, two guide rails in the described Y-axis linear motion guide rail system are connected with two guide rails in the described X-axis linear motion guide rail system, realize between the two sliding; Two guide rails in the described Z axis linear motion guide rail system are connected with two guide rails in the described Y-axis linear motion guide rail system, and two guide rails in the two relatively described Y-axis linear motion guide rail of guide rail systems in the Z axis linear motion guide rail system slide.
In one of them embodiment of the utility model, two guide rails in the described Y-axis linear motion guide rail system are realized being connected by the first slide block with two guide rails in the described X-axis linear motion guide rail system.
In one of them embodiment of the utility model, two guide rails in the described Z axis linear motion guide rail system are realized being connected by the second slide block with two guide rails in the described Y-axis linear motion guide rail system.
In one of them embodiment of the utility model, be connected with the first spline joint axle between two guide rails in the described X-axis linear motion guide rail system; Two guide rails in the described Z axis linear motion guide rail system are connected with the second spline joint axle by the second slide block.
In one of them embodiment of the utility model, be provided with ball screw type linear motion axis on the every guide rail in described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and the Z axis linear motion guide rail system.
In one of them embodiment of the utility model, described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and Z axis linear motion guide rail system are respectively arranged with grating scale.
In one of them embodiment of the utility model, described drive unit is servo drive motor.
The utility model can also be:
In one of them embodiment of the utility model, described image collection device is ccd video camera.
Compared with prior art, the beneficial effects of the utility model are:
By the technical solution of the utility model, improve measurement efficient, measuring accuracy and improved working condition, can carry out to the synkinesia equipment of image measurer fast accurate control, for follow-up tip clearance measurement lays the foundation.
In addition, the space angle between (1) each freedom of motion is the right angle; (2) automatically control, but overprogram; (3) high reliability, high-speed, high precision; (4) can be used for than rugged environment, but long-term work, the convenient operation maintenance.
Description of drawings
For clearer explanation present specification embodiment or technical scheme of the prior art, the below will do simple the introduction to the accompanying drawing of required use in the description of embodiment or prior art, apparently, the accompanying drawing that the following describes only is the reference to some embodiment in the present specification, for those skilled in the art, in the situation of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows the synoptic diagram of the tip clearance in the assembling process being measured according to the two CCD of the usefulness of an embodiment of the utility model;
Fig. 2 is that synoptic diagram is looked on the left side of tip clearance measuring system;
Fig. 3 is the ccd video camera movement executing mechanism.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
The Eikonometric topworks of a kind of tip clearance comprises:
X-axis linear motion guide rail system;
Y-axis linear motion guide rail system;
Z axis linear motion guide rail system is provided with at least one image collection device in this Z axis linear motion guide rail system;
Described X-axis linear motion guide rail system, Y-axis linear motion guide rail system are connected quadrature and realize connecting with the Z axis linear motion guide rail three of system, and respectively are provided with motor on the three, can realize relative sliding by drive unit between the three.
Described X-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, and described Y-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, and described Z axis linear motion guide rail system comprises two guide rails that are arranged in parallel.
Two guide rails in the described Y-axis linear motion guide rail system are connected between two guide rails in the described X-axis linear motion guide rail system and realize sliding, two guide rails in the described Z axis linear motion guide rail system are connected with two guide rails in the described Y-axis linear motion guide rail system, and can be relatively described two guide rails in the Y-axis linear motion guide rail system slide.
Two guide rails in the described Y-axis linear motion guide rail system are realized being connected by the first slide block with two guide rails in the described X-axis linear motion guide rail system.
Two guide rails in the described Z axis linear motion guide rail system are realized being connected by the second slide block with two guide rails in the described Y-axis linear motion guide rail system.
Be connected with the first spline joint axle between two guide rails in the described X-axis linear motion guide rail system; Two guide rails in the described Z axis linear motion guide rail system are connected with the second spline joint axle by the second slide block.
Be provided with ball screw type linear motion axis on the every guide rail in described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and the Z axis linear motion guide rail system.
Described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and Z axis linear motion guide rail system are respectively arranged with grating scale.
Described drive unit can be servo drive motor.
Described image collection device can be ccd video camera.
Fig. 1 shows the synoptic diagram of the tip clearance in the assembling process being measured according to the two CCD of the usefulness of an embodiment of the utility model.Wherein, angular transducer 1, casing 2, blade 3, ccd video camera system (comprising movement executing mechanism) 4,6, data acquisition and processing system 5.The tip clearance measuring system adopts two CCD as shown in Figure 1 that the tip clearance in the assembling process is measured, can obtain different about two row gap data, processing and the fit-up gap situation that relatively can obtain to be correlated with by the analysis to data be such as the ovality of the concentricity of rotor, casing, wheel disc, sound blade tip.Want to collect satisfactory high quality graphic data, the plane that ccd video camera need cooperate with other half casing perpendicular to half casing as far as possible, when the image that collects like this carries out signal extraction and analysis, do not need too complicated program just can obtain relatively accurate gap width, if camera lens seriously is inclined to the mating surface of two and half casings, the view data of collection is invalid often.
Fig. 2 is that synoptic diagram is looked on the left side of tip clearance measuring system; Wherein, casing 2, ccd video camera system (comprising movement executing mechanism) 4,6, data acquisition and processing system 5.
Fig. 3 is the ccd video camera movement executing mechanism.Wherein, servo drive motor 1,13,15, spline joint axle 2,6, slide block 3,4,5,14; Ball screw type linear motion axis 7,8,9,11,16, ccd video camera 10,12.
The prerequisite of carrying out rapidly and accurately the tip clearance image data acquiring is that ccd video camera must move to assigned address rapidly and accurately.For this reason, the image measurer of present embodiment has adopted the rectangular coordinate system topworks of planer-type, as shown in Figure 3.This topworks consists of (wherein the Z direction adopts 9,11 two axles in parallel, is used for carrying out being synchronized with the movement of 10,12 two ccd video cameras) by the linear motion unit of quadrature.X-axis linear motion guide rail system 7,16 is contained on the fitter's bench, Y-axis linear motion guide rail system 8 is contained on the X-axis guide rail slide block 5,14, Z axis linear motion guide rail system 9,11 is contained on the slide block 3,4 of Y-axis guide rail, grating scale all is housed in order to measure each shaft position on three axis of orientations, CCD image gauge head 10,12 is fixed on 9,11 axles of Z direction.Respectively be equipped with a cover servo drive system on three directions of X, Y and Z, adopt the Open control theory based on " PC+ motion control card ", it can take full advantage of computer resource.As shown in Figure 4, place the motion control card in the host expansion slot, being achieved steering order by the exchanges data between servo-driver and scrambler or grating scale sends and the motor movement signal feedback, reach the accurate position control of electric system, thereby realize ccd video camera is moved to assigned address.Thereby so that measured object is in the field depth, keep each moving cell transfixion of topworks, carry out afterwards measurement and the subsequent treatment of tip clearance value.
The characteristics of topworks in the present embodiment:
1, the space angle between each freedom of motion is the right angle;
2, automatically control, but overprogram;
3, high reliability, high-speed, high precision;
4, can be used for than rugged environment, but long-term work, the convenient operation maintenance.
The rectangular coordinate system robot that topworks among the above embodiment adopts is widely used at aspects such as detection, flaw detection, assemblings.This structure technology is relatively ripe, and feasibility is good.Key is that the size design of parts is wanted rationally, and the combination of linear motion unit is wanted rationally, on the basis of satisfying requirement of strength and the scope of execution, reduces as much as possible physical dimension and weight.The design of topworks is the design towards processing, better design, if factory can not process product, design also is failed.Selection for control system also is vital simultaneously, does not have control system, just can not carry out any action.
CCD image measuring method among the above embodiment has application example at aspects such as workpiece size detection, fast automatic contact detection, the detections of complicated surface weldment, but because the complex structure of engine, still relatively harsh to the requirement of topworks and CCD measuring system, therefore should adopt the ccd video camera of high-precision topworks and high pixel.Be necessary to verify at prototype first the feasibility of this programme, then carry out the improvement of topworks and measuring system, reach after the size and accuracy requirement of tip clearance, the tip clearance that is used further in the engine assembly process is measured.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part cross-references gets final product between each embodiment.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also drop in the scope of the present utility model.
Although with reference to a plurality of explanatory embodiment of the present utility model the utility model is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (10)
1. the Eikonometric topworks of tip clearance is characterized in that, comprising:
X-axis linear motion guide rail system;
Y-axis linear motion guide rail system;
Z axis linear motion guide rail system is provided with at least one image collection device in this Z axis linear motion guide rail system;
Described X-axis linear motion guide rail system, Y-axis linear motion guide rail system are connected quadrature and realize connecting with the Z axis linear motion guide rail three of system, and respectively are provided with drive unit on the three, realize relative sliding by drive unit between the three.
2. the Eikonometric topworks of tip clearance according to claim 1, it is characterized in that, described X-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, described Y-axis linear motion guide rail system comprises two guide rails that are arranged in parallel, and described Z axis linear motion guide rail system comprises two guide rails that are arranged in parallel.
3. the Eikonometric topworks of tip clearance according to claim 2 is characterized in that, two guide rails in the described Y-axis linear motion guide rail system are connected with two guide rails in the described X-axis linear motion guide rail system, realize between the two sliding; Two guide rails in the described Z axis linear motion guide rail system are connected with two guide rails in the described Y-axis linear motion guide rail system, and two guide rails in the two relatively described Y-axis linear motion guide rail of guide rail systems in the Z axis linear motion guide rail system slide.
4. the Eikonometric topworks of tip clearance according to claim 2 is characterized in that, two guide rails in the described Y-axis linear motion guide rail system are realized being connected by the first slide block with two guide rails in the described X-axis linear motion guide rail system.
5. the Eikonometric topworks of tip clearance according to claim 2 is characterized in that, two guide rails in the described Z axis linear motion guide rail system are realized being connected by the second slide block with two guide rails in the described Y-axis linear motion guide rail system.
6. the Eikonometric topworks of tip clearance according to claim 5 is characterized in that, is connected with the first spline joint axle between two guide rails in the described X-axis linear motion guide rail system; Two guide rails in the described Z axis linear motion guide rail system are connected with the second spline joint axle by the second slide block.
7. the Eikonometric topworks of tip clearance according to claim 1, it is characterized in that, be provided with ball screw type linear motion axis on the every guide rail in described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and the Z axis linear motion guide rail system.
8. according to claim 1 to the Eikonometric topworks of the described tip clearance of 7 any one, it is characterized in that described X-axis linear motion guide rail system, Y-axis linear motion guide rail system and Z axis linear motion guide rail system are respectively arranged with grating scale.
9. the Eikonometric topworks of tip clearance according to claim 8 is characterized in that, described drive unit is servo drive motor.
10. the Eikonometric topworks of tip clearance according to claim 8 is characterized in that, described image collection device is ccd video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600332 CN202903144U (en) | 2012-11-14 | 2012-11-14 | Blade tip clearance image measurement actuating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600332 CN202903144U (en) | 2012-11-14 | 2012-11-14 | Blade tip clearance image measurement actuating mechanism |
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| CN202903144U true CN202903144U (en) | 2013-04-24 |
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| CN 201220600332 Expired - Fee Related CN202903144U (en) | 2012-11-14 | 2012-11-14 | Blade tip clearance image measurement actuating mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673909A (en) * | 2013-12-23 | 2014-03-26 | 苏州博众精工科技有限公司 | Laser detection mechanism |
| CN105387823A (en) * | 2015-11-30 | 2016-03-09 | 西北工业大学 | Microwave short-range measurement method based on reflectometer sensor |
| CN104075677B (en) * | 2014-06-30 | 2017-01-25 | 东北大学 | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine |
| CN108645602A (en) * | 2018-03-27 | 2018-10-12 | 南京航空航天大学 | Rotating machinery tip clearance and blade rotational speed Integrated Measurement System and method, image processing program |
| CN114526705A (en) * | 2022-01-18 | 2022-05-24 | 哈尔滨工业大学 | Method for measuring dynamic non-concentricity of double rotors of aero-engine |
-
2012
- 2012-11-14 CN CN 201220600332 patent/CN202903144U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673909A (en) * | 2013-12-23 | 2014-03-26 | 苏州博众精工科技有限公司 | Laser detection mechanism |
| CN103673909B (en) * | 2013-12-23 | 2016-04-06 | 苏州博众精工科技有限公司 | A kind of laser detection mechanism |
| CN104075677B (en) * | 2014-06-30 | 2017-01-25 | 东北大学 | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine |
| CN105387823A (en) * | 2015-11-30 | 2016-03-09 | 西北工业大学 | Microwave short-range measurement method based on reflectometer sensor |
| CN105387823B (en) * | 2015-11-30 | 2018-05-01 | 西北工业大学 | Microwave low coverage measuring method based on reflection flowmeter sensor |
| CN108645602A (en) * | 2018-03-27 | 2018-10-12 | 南京航空航天大学 | Rotating machinery tip clearance and blade rotational speed Integrated Measurement System and method, image processing program |
| CN108645602B (en) * | 2018-03-27 | 2019-12-20 | 南京航空航天大学 | System and method for comprehensively measuring blade tip clearance and blade rotating speed of rotary machine and image processing program |
| CN114526705A (en) * | 2022-01-18 | 2022-05-24 | 哈尔滨工业大学 | Method for measuring dynamic non-concentricity of double rotors of aero-engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20131114 |