CN110195716A - A kind of compressor air inlet machine aberration test system and method - Google Patents
A kind of compressor air inlet machine aberration test system and method Download PDFInfo
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- CN110195716A CN110195716A CN201910656011.8A CN201910656011A CN110195716A CN 110195716 A CN110195716 A CN 110195716A CN 201910656011 A CN201910656011 A CN 201910656011A CN 110195716 A CN110195716 A CN 110195716A
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- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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Abstract
This application involves a kind of compressor air inlet machine aberration test system, system includes: the distortion casing of cylinder type；The testpieces casing being connect with distortion casing；Testpieces calotte in testpieces casing is set；Multiple air inlet supporting plates, air inlet supporting plate are arranged between testpieces calotte and testpieces casing, are used for joint test part calotte and testpieces casing；Multiple flow-field test devices, flow-field test device is inserted into testpieces casing, for measuring the flow field between testpieces casing and testpieces calotte；Air inlet plate, air inlet plate have part for the opening of airflow and part for hindering the occlusion part of airflow；And driving device, driving device is connected to above-mentioned air inlet plate, for driving air inlet plate to rotate in a circumferential direction.The application can meet finer compressor aberration test demand by rotating inlet plate, compared to fixing insertion aberration test method, substantially increase the spatial resolution and measuring accuracy to Distorted Flow Field test.
Description
Technical field
The application belongs to Compressor test technical field, in particular to a kind of compressor air inlet machine aberration test system and side
Method.
Background technique
Compressor air inlet machine aberration test is the important tests content for evaluating Capability of Compressor.Inlet Total Pressure Distortion is tested at present
Common means are to build Distorted Flow Field in compressor inlet using fixed plate distortion simulator, and plate is installed
Afterwards, circumferential angle is that fixation cannot be adjusted, and testing section is arranged at the close compressor inlet grade blade of panel downstream, leads to
Often along one week uniformly distributed 6~8 steady state test instrument and 6~8 dynamic test set tables, to obtain import stable state and dynamic distortion
Index.
However, in the above-mentioned methods, the test instrumentation for measuring Distorted Flow Field is fixed on the outer casing of testpieces,
And be deep into airflow channel, air-flow can generate flow losses after flowing through instrument, and when carrying out compressor aberration test, instrument
It is very close with compressor first row blade distance, in order to reduce the influence of import instrument to the greatest extent, compressor inlet metered quantity by
To stringent limitation (usually only 6 to 8 instrument), so that the inlet distortions that traditional fixing insertion formula aberration test method obtains
Mobile map spatial resolution is not high, and which has limited the analyses to import Real Flow Field feature, also reduces the meter of distortion index
Calculate precision
Summary of the invention
There is provided a kind of compressor air inlet machine aberration test system and methods for the purpose of the application, to solve or mitigate background
At least one problem in technology.
On the one hand, technical solution provided by the present application is: a kind of compressor air inlet machine aberration test system, the system packet
It includes:
The distortion casing of cylinder type；
The testpieces casing being connect with the distortion casing；
Testpieces calotte in the testpieces casing is set；
Multiple air inlet supporting plates, the air inlet supporting plate are arranged between the testpieces calotte and the testpieces casing, use
In the connection testpieces calotte and testpieces casing；
Multiple flow-field test devices, the flow-field test device is inserted into the testpieces casing, for measuring the examination
Test the flow field between part casing and the testpieces calotte；
Air inlet plate, the air inlet plate have part for the opening of airflow and part for hindering airflow
Occlusion part；And
Driving device, the driving device are connected to above-mentioned air inlet plate, for driving the air inlet plate to rotate in a circumferential direction.
In one embodiment of the application, the area of the air inlet plate split shed is identical with the area of occlusion part.
In one embodiment of the application, the driving device drive the air inlet plate mode include gear driving,
Chain drive or one kind of belt driving.
In one embodiment of the application, the flow-field test device is arranged before the air inlet supporting plate along airflow direction
Or after the air inlet supporting plate.
In one embodiment of the application, it is no more than positioned at the quantity of the flow-field test device in same section a.
It further include air horn in one embodiment of the application, distortion casing is arranged in the air horn
Inlet end, for being rectified to charge air flow.
It further include control device in one embodiment of the application, the control device connects the driving device, is used for
The rotation angle and/revolving speed of the air inlet plate are obtained by monitoring the driving device.
On the other hand, technical solution provided by the present application is: a kind of compressor air inlet machine aberration test method, using as above
Any pilot system, the test method include:
Air-flow is passed through into compressor；
After compressor is in stable condition, the flow field state in compressor is obtained by flow-field test device；
Driving air inlet plate circumferentially rotates predetermined angle, after compressor is in stable condition, again by flow-field test device
Obtain the flow field state in compressor；
It repeats the above steps, until air inlet plate rotates a circle, to obtain the measurement for being several times as much as the flow-field test device
Precision.
In one embodiment of the application, predetermined angle α=360/ (M × (N+1))
In formula, M is the flow-field test device quantity under same section, and N is air inlet plate number of revolutions.
The compressor air inlet machine aberration test system and method that the application proposes can be met relatively fine by rotating inlet plate
Compressor aberration test demand, compared to fixing insertion aberration test method, substantially increase to Distorted Flow Field test sky
Between resolution ratio and measuring accuracy.
Detailed description of the invention
In order to illustrate more clearly of technical solution provided by the present application, attached drawing will be briefly described below.It is aobvious and easy
Insight, drawings discussed below are only some embodiments of the present application.
Fig. 1 is the compressor air inlet machine aberration test system schematic of the application.
Fig. 2 is that the flow field survey device in the application at testpieces casing section distinguishes schematic diagram.
Fig. 3 is the adjustment process schematic diagram of plate when testing in the application.
Fig. 4 is import measuring point distribution schematic diagram equivalent after the rotation of air inlet plate in the application.
Fig. 5 is the test knot of always having a meeting, an audience, etc. well under one's control that the inlet airflow distortion test method measurement based on rotating inlet plate obtains in the application
Fruit figure.
Appended drawing reference
10- experimental rig
11- air horn
12- distortion casing
13- testpieces casing
14- testpieces calotte
15- air inlet supporting plate
16- flow-field test device
17- air inlet plate, 171- opening, 172- occlusion part
18- driving device
20- control device
21- coding module
22- servo control module
23- programming module
24- instruction input module
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.
The shortcomings that for fixing insertion aberration test method in the prior art, in order to reduce inlet flow field measurement to the greatest extent
The quantity of the influence of device, compressor inlet flow field survey device is severely limited, so that traditional fixing insertion formula distorts
The test result of test method inlet distortions flow field and map is very coarse, and distortion index precision is not high.Present applicant proposes one
Compressor air inlet machine aberration test system and method for the kind based on rotating inlet plate, can be improved measurement accuracy.
Original fixed plate is substituted by using the air inlet plate of rotation in the application, to improve measurement accuracy.Specifically
, as shown in Figure 1, the compressor air inlet machine aberration test system skill of the application includes: distortion casing 12, substantially at uniform diameter
Cylinder type；Testpieces casing 13, the substantially cylinder of closed-entry, the biggish one end of testpieces casing 13 and distortion casing 12
Connection, the other end is at lesser shrink mouth shape；Testpieces calotte 14 is predominantly located in testpieces casing 13, testpieces calotte
14 have one substantially at the conehead of circular arc type, conehead object gas flow direction of flow；Multiple air inlet supporting plates 15 are arranged in testpieces
Between calotte 14 and testpieces casing 13, for testpieces calotte 14 and testpieces casing 13 to link together, with fixed examination
Test part calotte 14；Multiple flow-field test devices 16, flow-field test device 16 are a kind of sensors, also known as flow-field test instrument,
Substantially in rod-shaped and insertion testpieces casing 13, part of detecting is used between testpieces calotte 14 and testpieces casing 13
Air velocity distribution between measurement testpieces casing 13 and testpieces calotte 14；Air inlet plate 17, outer profile are circle, air inlet
The setting of plate 17 has a certain distance in distortion casing 12, and with testpieces calotte 14, has certain face on air inlet plate 17
Long-pending opening 171 and remaining are the occlusion part 172 of entity structure, and for flowing through for air-flow, occlusion part 172 is used for opening 171
Prevent outer gas stream inflow and the outflow of organization internal air-flow；Driving device 17 connects air inlet plate 17, for driving air inlet to insert
Plate 17 rotates in a circumferential direction.
In this application, the opening 171 being arranged on air inlet plate 17 is identical with the area of occlusion part 172, opening 171 and screening
Stopper 172 is semicircle, i.e. opening 171 and occlusion part 172 is divided equally with the diameter for passing through 17 center of air inlet plate.In other realities
Apply in example, opening 171 and occlusion part 172 area it is also not identical, such as opening 171 be occupy the sector of entire area 1/3, and
Occlusion part 172 is the sector for occupying entire area 2/3.
In this application, driving device 18 drives air inlet plate 17 that can take various ways.Such as in one embodiment
In can take driven side gear formula, in this mode, in the one circle external tooth of outer edge setting of air inlet plate 17, in driving device
18 use driving motor, and gear is arranged thereon, and the rotation of air inlet plate 17 can be driven in the two cooperation.In another embodiment may be used
To take in a manner of chain drive, in this fashion, it is respectively provided with external tooth on air inlet plate 17 and driving device 18, passes through chain
Air inlet plate 17 and driving device 18 are connected, when driving device is using motor as above and drives, air inlet plate 17 can be driven
Rotation.Belt driving method can also be used in other embodiments, in this fashion, in air inlet plate 17 and driving device
Settable groove on 18, by the way that belt to be arranged in groove to connect air inlet plate 17 and driving device 18, when driving device is adopted
When with motor as above and driving, the rotation of air inlet plate 17 can be driven.
In this application, flow-field test device 16 is arranged before air inlet supporting plate 15 or air inlet supporting plate 15 along airflow direction
Later, flow-field test device 16 is arranged can determine before or after air inlet supporting plate 15 according to test requirements document or content of the test.?
In Fig. 1 and embodiment illustrated in fig. 2, flow-field test device 16 is arranged after air inlet supporting plate 15 along airflow direction.
In this application, the quantity positioned at the flow-field test device 16 in same section is no more than 10, preferred arrangement side
In case, the quantity of flow-field test device 16 is 6 or 8.Installing excessive flow-field test device 16 during test will affect
Distorted Flow Field between testpieces casing 13 and testpieces calotte 14, causes the inaccuracy of measurement, therefore defines in the application
The quantity of flow-field test device 16 is no more than 10, and flow-field test device 16 is uniformly distributed with casing axis.In each flow-field test
Multiple measurement points or measurement sensor are usually distributed on device 16, quantity is generally according to testpieces casing 13 and testpieces calotte
14 distance determines.In embodiment as shown in Figure 2, quantity of the flow-field test device 16 in same distortion section is 8, Mei Geliu
There is 7 measurement points or measurement sensor on field test device 16.
In this application, compressor air inlet machine aberration test system further includes air horn 11, have one compared with big end and
One small end, the small end of air horn 11 are connected with the inlet end of distortion casing 12, and air-flow is from air horn 11
Charge air flow can be rectified by flowing into distortion casing 12 compared with big end.
In this application, compressor air inlet machine aberration test system further includes control device 20, the connection driving of control device 20
Device 18, for obtaining the rotation angle and/revolving speed of air inlet plate 17 by monitoring driving device 18.
As shown in Figure 1, control device 20 includes that coding module 21, servo control module 22, programming module 23 and instruction are defeated
Enter module 24.When above-mentioned driving device 18 is motor driven, driving device 18 is controlled by servo control module 22, is compiled
Code module 21 is used to record and feed back the current location of air inlet plate 17 to programming module 23, programming module 23 then with servo-drive
The mutually transmitting instruction of module 22 transmits servo-driven module 22 according to the instruction of coding module 21 and instruction input module 24
Instruction, the final driving realized to driving device 18, to complete the position control of air inlet plate 17.In above-mentioned some embodiments
In, coding module 21 can be made of encoder, and servo control module 22 is made of servo controller, and programming module 23 can be by PLC/
DSP or other chips are constituted, and instruction input module 24 can be made of the computer with display interface.
On the basis of realizing the compressor air inlet machine aberration test system of the application, compressor air inlet machine aberration test can be carried out
Method.
As shown in figure 3, the compressor air inlet machine aberration test method of the application, which uses, is based on rotating inlet plate 1, due to examining
Compressor is considered for axial symmetry distribution, when plate circumferentially rotates, can't cause the variation of Distorted Flow Field distribution, but meeting
Change the phase of plate and air inlet testing section instrument.Usual aberration test arranges stable state or dynamic measuring point each 6~8 in import
Instrument, when test, air inlet plate 17 fixed first arrives reference phase, is passed through air-flow in compressor, after compressor is in stable condition,
The flow pattern after air inlet plate 17 is acquired using the flow-field test device 16 for being arranged in import, then passes through driving device
18 drive air inlet plates 17 to rotate some phase, repeat above-mentioned measurement process, until air inlet plate 17 rotates a circle or mostly all.Its
In, the angle of rotation usually may be set to α=360/ (M × (N+1)), and M is the number of the flow field survey device 16 in distortion section
Amount, N are the number that air inlet plate 17 rotates.Such as when 8 tributary field measurement device 16 is arranged in import, flow field survey device 16
Between be divided into 45 °, twice, 15 ° of rotation, measures three groups of inlet distortions flow field data to rotating inlet plate 17 respectively every time when test,
And three groups of results are overlapped according to the phase of rotation, then be equivalent to 24 instrument while measurement as a result, measuring point space point
Resolution improves 3 times, as shown in Figure 4.Using this method, plate phase of every change, the spatial resolution phase of test result
Than increasing by 1 times with traditional test layout, the capture of stream field details and the test result to distortion index are substantially increased.
Attached drawing 5 show abnormal using the compressor inlet of the compressor air inlet machine aberration test system and method acquisition of the application
The test result for becoming stagnation pressure field distribution, it can be seen that, measurement is reasonably distributed from result, measurement accuracy is high.
The application has the characteristics that axial symmetry distribution using compressor, when air inlet plate 17 circumferentially rotates, not
The variation that Distorted Flow Field can be caused to be distributed, but the circumferential phase of Distorted Flow Field with the flow testing device of air inlet testing section can be changed
Position is in the inlet flow field of out of phase by measuring air inlet plate, and result is overlapped, and is equivalent to increase import
The spatial resolution of flow-field test.The application can solve traditional fixation under the premise of not increasing flow field survey device quantity
The compressor air inlet machine aberration test method of air inlet board plug type due to being limited by the quantity of flow field survey device, inlet distortions index and
The not high problem of distortion pattern measuring accuracy.The rotational distortion test method that the application proposes, can meet finer compressor
Aberration test demand is greatly improved the spatial discrimination that mouth tests Distorted Flow Field compared to fixing insertion aberration test method
Rate and measuring accuracy.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (9)
1. a kind of compressor air inlet machine aberration test system, which is characterized in that the system comprises
The distortion casing (12) of cylinder type；
The testpieces casing (13) being connect with distortion casing (12)；
Testpieces calotte (14) in the testpieces casing (13) is set；
Multiple air inlet supporting plates (15), the air inlet supporting plate (15) are arranged in the testpieces calotte (14) and the testpieces casing
(13) between, for connecting the testpieces calotte (14) and testpieces casing (13)；
Multiple flow-field test devices (16), the flow-field test device (16) is inserted into the testpieces casing (13), for surveying
Measure the flow field between the testpieces casing (13) and the testpieces calotte (14)；
Air inlet plate (17), the air inlet plate (17) have part for the opening (171) of airflow and part for hindering
Hinder the occlusion part (172) of airflow；And
Driving device (18), the driving device (18) is connected to above-mentioned air inlet plate (17), for driving the air inlet plate
(17) it rotates in a circumferential direction.
2. compressor air inlet machine aberration test system as described in claim 1, which is characterized in that opened in the air inlet plate (17)
The area of mouth (171) is identical with the area of occlusion part (172).
3. compressor air inlet machine aberration test system as described in claim 1, which is characterized in that driving device (18) driving
The mode of the air inlet plate (17) includes one kind of gear driving, chain drive or belt driving.
4. compressor air inlet machine aberration test system as described in claim 1, which is characterized in that the flow-field test device (16)
Along airflow direction setting before the air inlet supporting plate (15) or after the air inlet supporting plate (15).
5. compressor air inlet machine aberration test system as claimed in claim 4, which is characterized in that the stream positioned at same section
The quantity of field test device (16) is no more than 10.
6. compressor air inlet machine aberration test system as claimed in claim 1 to 5, which is characterized in that further include air inlet loudspeaker
Mouth (11), air horn (11) setting are used to rectify charge air flow in the inlet end of distortion casing (12).
7. compressor air inlet machine aberration test system as claimed in claim 6, which is characterized in that it further include control device (20),
The control device (20) connects the driving device (18), for described in being obtained by monitoring the driving device (18) into
The rotation angle and/or revolving speed of gas plate (17).
8. a kind of compressor air inlet machine aberration test method, using the pilot system as described in claim 1 to 7 is any, the examination
Proved recipe method includes
Air-flow is passed through into compressor；
After compressor is in stable condition, the flow field state in compressor is obtained by flow-field test device；
Driving air inlet plate circumferentially rotates predetermined angle, after compressor is in stable condition, obtains again by flow-field test device
Flow field state in compressor；
It repeats the above steps, until air inlet plate rotates a circle, to obtain the measurement accuracy for being several times as much as the flow-field test device.
9. compressor air inlet machine aberration test method as claimed in claim 8, which is characterized in that predetermined angle α=360/
(M×(N+1))
In formula, M is the flow-field test device quantity under same section, and N is air inlet plate number of revolutions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910656011.8A CN110195716A (en) | 2019-07-19 | 2019-07-19 | A kind of compressor air inlet machine aberration test system and method |
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| CN201910656011.8A CN110195716A (en) | 2019-07-19 | 2019-07-19 | A kind of compressor air inlet machine aberration test system and method |
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| CN201910656011.8A Pending CN110195716A (en) | 2019-07-19 | 2019-07-19 | A kind of compressor air inlet machine aberration test system and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111022314A (en) * | 2020-01-07 | 2020-04-17 | 中国科学院工程热物理研究所 | Transient distortion adjusting device for compressor test |
| CN111140532A (en) * | 2020-01-03 | 2020-05-12 | 北京航空航天大学 | Health monitoring method for aviation compressor rotor blade |
| CN112254973A (en) * | 2020-12-21 | 2021-01-22 | 中国航发上海商用航空发动机制造有限责任公司 | High-pressure compressor test piece mechanism |
| CN112665863A (en) * | 2020-11-10 | 2021-04-16 | 西安交通大学 | Radial rotating plate type adjustable total pressure distortion generator |
| CN112834228A (en) * | 2021-01-28 | 2021-05-25 | 中国人民解放军空军工程大学 | Aeroengine air intake scanning measuring device |
| CN114216685A (en) * | 2021-10-20 | 2022-03-22 | 中国航发四川燃气涡轮研究院 | Main combustion chamber component test piece for simulating radial velocity field of outlet of gas compressor |
| CN116255355A (en) * | 2022-12-30 | 2023-06-13 | 湖南汉能科技有限公司 | Special type air inlet coupling air compressor test platform |
| EP4223984A1 (en) * | 2022-02-04 | 2023-08-09 | Pratt & Whitney Canada Corp. | Fluid measurement system and method for operating same |
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| CN112665863B (en) * | 2020-11-10 | 2023-05-16 | 西安交通大学 | Radial rotating plate type adjustable total pressure distortion generator |
| CN112254973A (en) * | 2020-12-21 | 2021-01-22 | 中国航发上海商用航空发动机制造有限责任公司 | High-pressure compressor test piece mechanism |
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| CN112834228B (en) * | 2021-01-28 | 2022-12-13 | 中国人民解放军空军工程大学 | Aeroengine air intake scanning measuring device |
| CN114216685A (en) * | 2021-10-20 | 2022-03-22 | 中国航发四川燃气涡轮研究院 | Main combustion chamber component test piece for simulating radial velocity field of outlet of gas compressor |
| EP4223984A1 (en) * | 2022-02-04 | 2023-08-09 | Pratt & Whitney Canada Corp. | Fluid measurement system and method for operating same |
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| CN116255355A (en) * | 2022-12-30 | 2023-06-13 | 湖南汉能科技有限公司 | Special type air inlet coupling air compressor test platform |
| CN116255355B (en) * | 2022-12-30 | 2024-03-26 | 湖南汉能科技有限公司 | Special type air inlet coupling air compressor test platform |
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