CN106837840B - It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents - Google Patents
It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents Download PDFInfo
- Publication number
- CN106837840B CN106837840B CN201710047017.6A CN201710047017A CN106837840B CN 106837840 B CN106837840 B CN 106837840B CN 201710047017 A CN201710047017 A CN 201710047017A CN 106837840 B CN106837840 B CN 106837840B
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- stator
- stator blade
- fan
- top grating
- shaped cascade
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Classifications
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
Abstract
The present invention provides a kind of fan-shaped cascade experiment system for being used for stator blade aeroperformance research in Non-uniform Currents, it is characterised in that including：Converging portion；Measurement apparatus between fan-shaped CASCADE EXPERIMENT section, including stator top grating, stator lower grid plate, adjustable vane, left and right suction chamber, stator blade top grating, stator blade lower grid plate, slip stator blade and level；Suction system, including flowmeter, choke valve, water circulating type vacuum pump, threephase asynchronous and frequency-variable controller, the suction flow of frequency-variable controller and throttle valve adjustment water circulating type vacuum pump, and water circulating type vacuum pump is connected with left and right suction chamber by pipeline；Experiment test and data collecting system, the import of outlet and fan-shaped CASCADE EXPERIMENT section with converging portion is connected, for the measurement to parameter preset.The present invention realizes lower cost and shirtsleeve operation by building fan-shaped cascade experiment system by the cooperation of each several part, so as to obtain each performance parameters measurement and analysis in Non-uniform Currents, is laid the foundation for follow-up study.
Description
Technical field
Under the conditions of distortion can be achieved the present invention relates to one kind, studied for compressor stator aeroperformance in Non-uniform Currents
Fan-shaped cascade experiment system.
Background technology
Gas turbine is as a kind of advanced power set with its remarkable performance in aviation, naval vessel, generating, oil
The departments such as work, natural gas transportation and railway transportation are used widely.Produced as the Major Strategic of national defense industry and national economy
Product, its correlation technique are the core technologies of 21 century dynamical system, directly affect a national national defence, the energy, safety and
Competition in the industry ability.Compressor is the core component of gas turbine, and its service behaviour under different operating modes has to overall performance
And directly affect, be always the emphasis of domestic and foreign scholars research.In recent years, in order to meet aircraft flight height, flying speed, with
And the demand of high-performance mobility, compressor inlet flow field become to become increasingly complex, obvious stream often occurs in compressor
Field distortion.It is main still by various although there is theoretical calculation method because compressor blade design belongs to high-tech category
Experiment could obtain desired result,
Therefore, distorted in order to further study influence of the inlet distortion to stator blade runner interior flow field, it is necessary to be directed to
The stator blade runner that fluid influences carries out experiment measurement, but whole level experiment difficulty is big, cost is high, and data are not easy to measure.And by
Obvious heterogeneity is presented in the stator blade runner that the fluid that distorts influences, and the flow regime of each runner differs, and also increases reality
The difficulty of test amount.Therefore, fan-shaped CASCADE EXPERIMENT part of the design with adjustable vane, ensure stator blade inlet air conditions with it in level
Unanimously, the influence of distortion condition is included in again, while also to ensure enough measurable flow road quantity, such experiment and DATA REASONING
Method is very necessary.
The content of the invention
According to technical problem set forth above, and provide a kind of fan for being used for stator blade aeroperformance research in Non-uniform Currents
Shape cascade experiment system.The present invention mainly coordinates fan-shaped CASCADE EXPERIMENT section, suction system and experiment test system by converging portion
And data collecting system, so as to have, experiment difficulty is small, cost is low, simple to operate, and can carry out different free stream Mach numbers, difference
Flow angle, pitches and the advantages of become the experiment under the conditions of moving-stator blade the relative circumferential position etc..
The technological means that the present invention uses is as follows：
It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents, it is characterised in that bag
Include：
Converging portion, there is the cylinder for the fan-shaped flow area for meeting Vickers curve shape；
In fan-shaped CASCADE EXPERIMENT section, including stator top grating, stator lower grid plate, adjustable vane, left and right suction chamber, stator blade
Screen, stator blade lower grid plate, slide measurement apparatus between stator blade and level；
Coordinate displacement mechanism fixed seat is arranged on the stator top grating；The adjustable vane is fixed up and down by stator
Block is arranged between the stator top grating and the stator lower grid plate；Stator adjusts locating piece and the adjustable vane upper end
Stator rotary shaft connects and composes stator regulation detent mechanism；
Left side suction plate, left side suction chamber baffle plate, right side suction side plate and right side suction chamber baffle plate are fixed on the stator
The both ends of top grating and the stator lower grid plate form the left and right suction chamber；
Connected between the slip stator blade and the stator blade top grating and the stator blade lower grid plate using slideway；PIV forms
Sprue is embedded in the sealing that the stator blade top grating forms the stator blade top grating；When carrying out PIV experiment, PIV forms sliding block peace
In the slideway of the stator blade top grating；Slideway is measured between level to be arranged on the stator blade top grating, and it is embedding that sprue is measured between level
Enter the stator blade top grating and form sealing；When being measured between carrying out level, remove and sprue is measured between the level, and will measure and slide between level
Block measures on slideway between the level and forms measurement apparatus between the level；
Suction system, including flowmeter, choke valve, water circulating type vacuum pump, threephase asynchronous and frequency-variable controller,
The suction flow of water circulating type vacuum pump described in the frequency-variable controller and the throttle valve adjustment, and by pipeline by the water
Circulating vavuum pump is connected with the left and right suction chamber；
Experiment test and data collecting system, outlet and the fan by each data acquisition device and the converging portion
The import of shape CASCADE EXPERIMENT section is connected, and obtained pressure signal is converted into electric signal, computer is transferred to and is handled, and completes
Collection and processing to default experiment parameter.
Further, the outlet size of the converging portion matches completely with the entrance of the fan-shaped CASCADE EXPERIMENT section,
And total pressure probe mounting hole and wall static pressure hole are set in the outlet port region of the converging portion.
Further, the suction system uses arranges that suction seam is by convection into interior flow field and carried out in left and right side suction plate
Suction, the left side suction plate and the right side suction plate be fixed on the upper and lower screen of stator by positioning screw, and with it is described
Left side suction chamber baffle plate and the right side suction chamber baffle plate establish sealing suction chamber respectively, on the left side suction plate and the right side
Suction hole is opened in the suction plate of side to be attached with the water circulating type vacuum pump, completes suction.
Further, coordinate displacement mechanism fixed seat is connected by bolt and the ring flange of the fan-shaped CASCADE EXPERIMENT section
Connect, the change that measurement section is exported according to leaf grating changes coordinate displacement mechanism in ring flange circumferential position.
Further, the joint face of fixed block is equal above and below the stator top grating, the stator lower grid plate and the stator
Using spherical design, the adjustable vane adjusts locating piece by the stator and adjusts angle, and by upper end set screw and institute
The positioning spiro pit stated on stator top grating is fixed, and the adjustable vane after positioning is carried out by packing ring and lower end nut
It is fixed.
Further, the slip stator blade is integrally machined shaping using blade and upper lower flow channel, by slip teeth with it is described quiet
Leaf top grating connects with the stator blade lower grid plate.
Further, when carrying out inter-stage parameter measurement, the outlet section of the upper and lower screen of stator passes through between flange and level
Measure extension connection；When carrying out static cascade experiment, the outlet section of the upper and lower screen of stator passes through flange and the stator blade
The entrance of upper and lower screen is connected.
Further, the outlet section of the stator blade top grating is additionally provided with the radial pressure gradient of different height by flange
Baffle plate, the i.e. high baffle plate of 30% leaf and the high baffle plate of 50% leaf.
Further, experiment test and data collecting system, including total pressure probe, wall static pressure air feeders, five hole gas
Dynamic probe, five points three hole rake probes, 12 hole stagnation pressure rakes, wall static pressure air feeders, particle image velocimeter, coordinate bit
Telephone-moving structure, pressure scanning valve and remote computer；The total pressure probe is arranged on converging portion outlet and the fan-shaped leaf grating
Experimental section import, go deep into the central area in region to be measured；Five hole air feeders and the 12 hole stagnation pressure rake are arranged on
The outlet port of the fan-shaped CASCADE EXPERIMENT section；The pressure scanning valve is made up of multiple pressure scanning modules, is internally integrated
Pressure sensor and A/D converters, after experiencing pressure signal, by handling direct output digit signals to remote computer.
Further, the five points three hole rake probe is arranged between the adjustable vane and the slip stator blade, is surveyed
Measure stator exit flow stagnation pressure, static pressure and Mach number, in real time by the five points three hole rake probe measured by aerodynamic parameter
By the regulation to source of the gas, the Mach Number Never To Be Exceeded for measuring the five points three hole probe reaches desired value, and then starts stator blade and go out
The measurement of mouth parameter.
The present invention has advantages below：
The present invention is used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents by building, each
Partial cooperating can be obtained different free stream Mach numbers in Non-uniform Currents and be attacked with relatively low cost and shirtsleeve operation
Leaf grating interior flow field structure and aeroperformance under corner condition, for enter from now on compressor flow field characteristic analysis under the conditions of line distortion,
Performance optimizes and blade aerodynamic shape-designing is accumulated experience, the development also tested for later compressor anti-distortion ability research and level
Lay the foundation, there is important theory significance and application value realistic.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to do simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the fan-shaped cascade experiment system of the present invention.
Fig. 2 is the structured flowchart of suction system of the present invention.
Fig. 3 is the structural representation of the fan-shaped CASCADE EXPERIMENT section of the present invention.
Fig. 4 is the structural representation of adjustable vane of the present invention.
Fig. 5 is the structural representation that the present invention slides stator blade.
Fig. 6 is the structural representation of particle image speed-measuring system of the present invention.
In figure：1st, converging portion；2nd, fan-shaped CASCADE EXPERIMENT section；3rd, experiment test and data collecting system；4th, coordinate bit telephone-moving
Structure fixed seat；5th, stator top grating；6th, stator regulation locating piece；7th, total pressure probe seat；8th, stator lower grid plate；9th, adjustable vane；
10th, extension is measured between level；11st, left side suction plate；12nd, left side suction chamber baffle plate；13rd, PIV forms sprue；14th, PIV forms are slided
Block；15th, right side suction side plate；16th, stator blade top grating；17th, sliding block is measured between level；18th, sprue is measured between level；19th, measured between level
Slideway；20th, right side tailgate；21st, stator blade lower grid plate；22nd, right side suction chamber baffle plate；23rd, stator blade is slided；24th, left side tailgate；25、
The high baffle plate of 30% leaf；26th, the high baffle plate of 50% leaf；27th, stator rotary shaft；28th, fixed block above and below stator；29th, packing ring；30th, laser
Generator；31st, CCD camera；32nd, cantilever slides stator blade.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents as shown in Fig. 1, Fig. 6,
Including：
Converging portion 1, the converging portion 1 are located at after wind-tunnel cylinder, are bolted, and have and meet Vickers curve shape
Fan-shaped flow area cylinder (" smaller part cylinder " i.e. with sector crosssection), by circular flow area of the prior art
Be converted to sector.The outlet size of the converging portion 1 matches completely with the entrance of fan-shaped CASCADE EXPERIMENT section 2；
As shown in figure 3, fan-shaped CASCADE EXPERIMENT section 2, including stator top grating 5, stator lower grid plate 8, adjustable vane 9, left and right
Measurement apparatus between suction chamber, stator blade top grating 16, stator blade lower grid plate 21, slip stator blade 23 and level；
Coordinate displacement mechanism fixed seat 4 is connected by bolt with the ring flange of the fan-shaped CASCADE EXPERIMENT section 2, that is, is arranged on
On the stator top grating 5, the change that measurement section is exported according to leaf grating changes coordinate displacement mechanism in ring flange circumferential position.
As shown in figure 4, the adjustable vane 9 is arranged on the stator top grating 5 and institute by fixed block above and below stator 28
Between stating stator lower grid plate 8, the connection of fixed block 28 above and below the stator top grating 5, the stator lower grid plate 8 and the stator
Face uses spherical design, and the screen inner side of the upper and lower screen of stator and the joint face of fixed block 28 above and below stator are set using sphere
Meter；Stator adjusts locating piece 6 and the stator rotary shaft 27 of the upper end of adjustable vane 9 connects and composes stator regulation detent mechanism；
The adjustable vane 9 adjusts locating piece 6 by the stator and adjusts angle, and by upper end set screw and the stator top grating
Positioning spiro pit on 5, which is fixed, can carry out accurate adjustment, and described after positioning adjustable is led by packing ring 29 and lower end nut
Leaf 9 is fixed, and packing ring 29 can facilitate the installation, positioning and fixation of adjustable vane 9.Five are set on the stator lower grid plate 8
Three hole probe mounting grooves of point.
It is fixed that left side suction plate 11, left side suction chamber baffle plate 12, right side suction side plate 15 and right side suction chamber baffle plate 22 pass through
Position screw is fixed on the stator top grating 5 and the both ends of the stator lower grid plate 8 form the left and right suction chamber；
When carrying out inter-stage parameter measurement, the outlet section of the upper and lower screen of stator is extended by being measured between flange and level
Section 10 connects；When carrying out static cascade experiment, the outlet section of the upper and lower screen of stator is upper and lower by flange and the stator blade
The entrance of screen is connected.
As shown in figure 5, the slip stator blade 23 is integrally machined shaping, the slip stator blade 23 using blade and upper lower flow channel
It is connected between the stator blade top grating 16 and the stator blade lower grid plate 21 using slip teeth with slideway, thus it is possible to vary slide stator blade 23
Circumferential relative position inside leaf grating, while pitches experiment can also be carried out, i.e., slided by increasing between sliding blade
Block changes cascade solidity, and two neighboring slip stator blade 23 closely adjacent can form a complete runner；The stator blade screen 16
On be provided with measurement apparatus between PIV measurement window structures and level, and pass through flange in the outlet section of the stator blade top grating 16
It is provided with the radial pressure gradient baffle plate of different height, the i.e. high high baffle plate 26 of the leaf of baffle plate 25 and 50% of 30% leaf.Under the stator blade
Screen 21 is connected by bolt with the stator lower grid plate 8, provided with slip stator blade slideway and screwed hole.Left side tailgate 24 and right side
Tailgate 20 is connected with the stator blade top grating 16 and the stator blade lower grid plate 21 by screwed hole.
The PIV measurements window structure is made up of optical glass, PIV forms sprue 13 and PIV forms sliding block 14, optics glass
Glass is embedded on the PIV forms sliding block 14, and the arrangement of stator blade 32 is slided by PIV forms sliding block 14 and cantilever and can be measured not
With circumferential position leaf grating internal speed field structure, PIV forms sprue 13 is embedded in the stator blade top grating 16 and forms the stator blade
The sealing of top grating 16；When carrying out PIV experiment, PIV forms sliding block 14 is arranged in the slideway of the stator blade top grating 16,
PIV forms sprue 13 is closely connected with the stator blade top grating 16 by screw when without PIV experiment and realizes top grating
Sealing；
Slideway 19 is measured between level to be arranged on the stator blade top grating 16, and sprue 18 is measured between level and is embedded in grid on the stator blade
Plate 16 forms sealing；When being measured between carrying out level, measurement sprue 18 between the level is removed, and be arranged on sliding block 17 is measured between level
Measured between the level on slideway 19 and form measurement apparatus between the level；Five hole air feeders can pass through measurement sliding block 17 and go deep into leaf
Measured inside grid, and measure sliding block 17 can be measured according to measurement request between level slide into it is circumferentially moved in 19.
As shown in Fig. 2 suction system, including flowmeter, choke valve, water circulating type vacuum pump, threephase asynchronous and
Frequency-variable controller, the threephase asynchronous drive water circulating type vacuum pump to establish vacuum, the frequency-variable controller and described
The suction flow of water circulating type vacuum pump described in throttle valve adjustment, and by pipeline by the water circulating type vacuum pump and the left side
Right suction chamber is connected, and passes through choke valve and the further control and suck amount of flowmeter；The suction system is used and taken out in left and right side
The intensive suction seam of suction disc arrangement is by convection into interior flow field and aspirated, and the left side suction plate 11 and the right side suction plate 15 are logical
Positioning screw is crossed to be fixed on the upper and lower screen of stator, and with the left side suction chamber baffle plate 12 and the right side suction chamber baffle plate
22 establish sealing suction chamber respectively, open suction hole in the left side suction plate 11 and the right side suction plate 15 and are followed with the water
Ring vacuum pumps are attached, and complete suction.
Experiment test and data collecting system 3, with the outlet of the converging portion 1 and entering for the fan-shaped CASCADE EXPERIMENT section 2
Mouth is connected, for the measurement to parameter preset；Including total pressure probe, wall static pressure air feeders, five hole air feeders, five points three
Hole rake probe, 12 hole stagnation pressure rakes, wall static pressure air feeders, particle image velocimeter, coordinate displacement mechanism, pressure are swept
Retouch valve and remote computer, the pressure scanning valve is made up of multiple pressure scanning modules, be internally integrated pressure sensor and
A/D converters, after experiencing pressure signal, by handling direct output digit signals to remote computer.
In the outlet port region of converging portion 1 and the arrangement arrangement total pressure probe of stator top grating 5 seat 7, (i.e. total pressure probe is installed
The setting in hole), and the wall static pressure hole in stator top grating 5 close near trailing edge, the total pressure probe go deep into region to be measured
Central area utilizes wall static pressure hole measurement stator outlet wall static pressure by incoming stagnation pressure before air feeders measurement nozzle ring.
The five points three hole rake probe is arranged between the adjustable vane 9 and the slip stator blade 23, measures stator
Stagnation pressure, static pressure and the Mach number of exit flow, it is right in real time to pass through the aerodynamic parameter measured by the five points three hole rake probe
The regulation of source of the gas, the Mach Number Never To Be Exceeded for measuring the five points three hole probe reaches desired value, and then starts stator blade outlet parameter
Measurement.
Five hole air feeders and the 12 hole stagnation pressure rake are arranged on the outlet position of the fan-shaped CASCADE EXPERIMENT section 2
Put；A slit is opened up on stator blade top grating 16, facilitates five-hole probe to go deep into inside leaf grating, coordinate displacement mechanism passes through coordinate
Displacement mechanism fixed seat 4 is arranged on the flange of stator top grating 5, and programming Driving Stepping Motor by remote computer controls five holes
Probe measurement stator blade exit flow field parameter.The pressure signal that air feeders and five-hole probe perceive is delivered to pressure by pneumatic hose
Power scan module carries out data acquisition, after A/D is changed, output digit signals to remote computer, completes aerodynamic parameter and surveys
Amount.
Particle image velocimeter is made up of laser generator 30, CCD camera 31 and particle generator, and particle generator is being received
Hold back and spread trace particle in front of section in cylinder, laser generator 30 and CCD camera 31 are controlled by synchronizer, PIV form sliding blocks
Optical glass is inlayed on 14, facilitates projection and the cameras capture scattered light signal of laser, obtains leaf grating internal speed vector field.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents, it is characterised in that including：
Converging portion (1), there is the cylinder for the fan-shaped flow area for meeting Vickers curve shape；
Fan-shaped CASCADE EXPERIMENT section (2), including stator top grating (5), stator lower grid plate (8), adjustable vane (9), left and right suction chamber
Room, stator blade top grating (16), stator blade lower grid plate (21), slip stator blade (23) measurement apparatus between level；
Coordinate displacement mechanism fixed seat (4) is arranged on the stator top grating (5)；The adjustable vane (9) is by stator
Lower fixed block (28) is arranged between the stator top grating (5) and the stator lower grid plate (8)；Stator regulation locating piece (6)
Stator regulation detent mechanism is connected and composed with the stator rotary shaft (27) of the adjustable vane (9) upper end；
Left side suction plate (11), left side suction chamber baffle plate (12), right side suction side plate (15) and right side suction chamber baffle plate (22) are solid
The both ends for being scheduled on the stator top grating (5) and the stator lower grid plate (8) form the left and right suction chamber；
The slip stator blade (23) is connected between the stator blade top grating (16) and the stator blade lower grid plate (21) using slideway；
The embedded stator blade top grating (16) of PIV forms sprue (13) forms the sealing of the stator blade top grating (16)；It is real carrying out PIV
When testing, PIV forms sliding block (14) is arranged in the slideway of the stator blade top grating (16)；Slideway (19) is measured between level and is arranged on institute
State on stator blade top grating (16), the embedded stator blade top grating (16) of sprue (18) is measured between level and forms sealing；Between level is carried out
During measurement, measurement sprue (18) between the level is removed, and will be measured between level between sliding block (17) is arranged on the level and measure slideway
(19) measurement apparatus between the level is formed on；
Suction system, including flowmeter, choke valve, water circulating type vacuum pump, threephase asynchronous and frequency-variable controller, it is described
The suction flow of water circulating type vacuum pump described in frequency-variable controller and the throttle valve adjustment, and by pipeline by the water circulation
Formula vavuum pump is connected with the left and right suction chamber；
Experiment test and data collecting system (3), by the outlet of each data acquisition device and the converging portion (1) and described
The import of fan-shaped CASCADE EXPERIMENT section (2) is connected, and obtained pressure signal is converted into electric signal, is transferred at computer
Reason, completes the collection and processing to default experiment parameter.
2. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the outlet size of the converging portion (1) matches completely with the entrance of the fan-shaped CASCADE EXPERIMENT section (2),
And total pressure probe mounting hole and wall static pressure hole are set in the outlet port region of the converging portion (1).
3. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the suction system uses arranges that suction seam is by convection into interior flow field and aspirated in left and right side suction plate, institute
State left side suction plate (11) and the right side suction plate (15) be fixed on by positioning screw on the upper and lower screen of stator, and with institute
State left side suction chamber baffle plate (12) and the right side suction chamber baffle plate (22) establishes sealing suction chamber respectively, aspirated in the left side
Suction hole is opened on plate (11) and the right side suction plate (15) to be attached with the water circulating type vacuum pump, completes suction.
4. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, coordinate displacement mechanism fixed seat (4) is connected by bolt and the ring flange of the fan-shaped CASCADE EXPERIMENT section (2)
Connect, the change that measurement section is exported according to leaf grating changes coordinate displacement mechanism in ring flange circumferential position.
5. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the connection of the upper and lower fixed block (28) of the stator top grating (5), the stator lower grid plate (8) and the stator
Face uses spherical design, and the adjustable vane (9) adjusts locating piece (6) by the stator and adjusts angle, and is determined by upper end
Position screw fixed with the positioning spiro pit on the stator top grating (5), and by packing ring (29) and lower end nut to positioning after
The adjustable vane (9) be fixed.
6. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the slip stator blade (23) is integrally machined shaping using blade and upper lower flow channel, pass through slip teeth and the stator blade
Top grating (16) and the stator blade lower grid plate (21) connection.
7. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, when carrying out inter-stage parameter measurement, the outlet section of the upper and lower screen of stator is prolonged by being measured between flange and level
Long section (10) connection；When carrying out static cascade experiment, the outlet section of the upper and lower screen of stator passes through flange and the stator blade
The entrance of upper and lower screen is connected.
8. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the radial pressure gradient that the outlet section of the stator blade top grating (16) is additionally provided with different height by flange is kept off
Plate, the i.e. high baffle plate of 30% leaf (25) and the high baffle plate of 50% leaf (26).
9. according to claim 1 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, experiment test and data collecting system (3), including total pressure probe, wall static pressure air feeders, five holes are pneumatically visited
Pin, five points three hole rake probes, 12 hole stagnation pressure rakes, particle image velocimeter, coordinate displacement mechanism, pressure scanning valve and remote
Journey computer；The total pressure probe is arranged on the converging portion (1) outlet and fan-shaped CASCADE EXPERIMENT section (2) import, deeply
The central area in region to be measured；Five hole air feeders and the 12 hole stagnation pressure rake are arranged on the fan-shaped CASCADE EXPERIMENT
The outlet port of section (2)；The pressure scanning valve is made up of multiple pressure scanning modules, has been internally integrated pressure sensor and A/
D converters, after experiencing pressure signal, by handling direct output digit signals to remote computer.
10. according to claim 9 be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents,
Characterized in that, the five points three hole rake probe is arranged between the adjustable vane (9) and the slip stator blade (23), survey
Stagnation pressure, static pressure and the Mach number of stator exit flow are measured, records the pneumatic ginseng measured by the five points three hole rake probe in real time
Number, by the regulation to source of the gas, the Mach Number Never To Be Exceeded for measuring the five points three hole rake probe reaches desired value, and then starts
The measurement of stator blade outlet parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108398227B (en) * | 2018-04-10 | 2020-04-28 | 哈尔滨工业大学 | Transonic fan-shaped cascade experiment table and incoming flow uniformity control method |
| CN108931363A (en) * | 2018-07-05 | 2018-12-04 | 西安交通大学 | A kind of plane and D remote sensing tele-experimentation device |
| CN108953232B (en) * | 2018-07-20 | 2020-01-10 | 大连海事大学 | Axial-flow compressor with static blades distributed in non-axial symmetry manner |
| CN110907118B (en) * | 2019-12-12 | 2020-12-01 | 西北工业大学 | Plane blade grid experimental device with variable installation angle and experimental method |
| CN113883098A (en) * | 2021-09-10 | 2022-01-04 | 中国民航大学 | Stator blade distortion-resistant axial flow compressor and stator blade distortion-resistant method of axial flow compressor |
| CN114370422B (en) * | 2021-12-27 | 2024-04-05 | 哈尔滨工业大学 | Coordinate frame for collecting fan-shaped blade grid inlet flow field and using method thereof |
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