CN106092493B - A kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method - Google Patents
A kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method Download PDFInfo
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- CN106092493B CN106092493B CN201510210892.2A CN201510210892A CN106092493B CN 106092493 B CN106092493 B CN 106092493B CN 201510210892 A CN201510210892 A CN 201510210892A CN 106092493 B CN106092493 B CN 106092493B
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Abstract
The present invention provides a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method, groove is set on the casing inner sidewall corresponded to by the movable vane blade tip in compressor, and thin film sensor is installed in groove；Wherein, at least one piezoelectric sensor unit and at least one temperature sensor unit are provided on thin film sensor, piezoelectric sensing unit is used to for blade tip fluid field pressure being converted into electric pressure signal output, and temperature sensor unit is used to for blade tip environment temperature to be converted into temperature signal output；Again by a signal acquiring system, the electric pressure signal and temperature signal that thin film sensor is caught are received, and convert thereof into digital signal, realization is shown on computers.The present invention can be under the conditions of not destroying the characteristics such as air velocity distribution flowing itself, boundary condition and pressure distribution, accurate measurement compressor dynamic air velocity distribution pressure distribution situation, for improving compressor work Prediction on Characteristics precision, promoting compressor design level has important theory significance and practical value.
Description
Technical field
The present invention relates to compressor technical field, in particular to a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and
Method.
Background technique
Compressor is the important component of aero-engine, is mentioned using high-speed rotating blade to air work done with realizing
The function of high air pressure, to the aeroperformance important in inhibiting for improving engine.Its dynamic characteristic is for the whole of engine
Body dynamic characteristic has very significant impact.It is generally made of rotor and stator two parts, and wherein rotor includes armature spindle
And movable vane, stator include casing and stator blade etc..To prevent movable vane and casing from colliding, when rotor high speed rotation in compressor, need to be stayed
There is certain gap, the distribution of blade tip pressure is always the hot spot of compressor research field.Since its working mechanism is considerably complicated
Still it is difficult to predict by theoretical calculation, sealing structure limitation is but also experiment measurement is very difficult.Blade tip Flow Field Distribution is to pressure
Mechanism of qi performance and stability all have a major impact, and how to measure fluid field pressure distribution and extremely close to the aeroperformance and efficiency of compressor
It is important, it can also improve and guidance is provided to the design of compressor and the performance of aero-engine.
Due to the complexity of tip structure and the interaction of vortex, engine destabilization problems are not well solved yet,
Civilian and national defence aviation key equipment such as engine, gas turbine, steam turbine Development Level has seriously been constrained.Therefore deeply
Development of the method for real-time measurement of compressor blade tip dynamic air current pressure distribution for promotion rotor dynamics is studied, raising is calmed the anger
The precision of machine Flow Field Distribution prediction has important theory significance and practical value.There are mainly three types of current research methods：Reason
By model, numerical simulation and experiment measurement (such as miniature five pore pressure forces probe measurement), however compressor is in actual operation
The case where air velocity distribution is distributed will be different, therefore can not obtain the exact value of stream pressure in real time.Gas compressor blade at present
, no matter all there is biggish office in terms of precision and real-time in the acquisition of sharp pressure, the mostly measurement dependent on theoretical calculation and indirectly
It is sex-limited.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus, including：
At least one thin film sensor is arranged on the casing inner sidewall at the blade tip relative position with gas compressor moving blade；
At least one piezoelectric sensor unit and at least one temperature sensor unit, the piezoelectricity are provided on the thin film sensor
Sensor unit is used to for blade tip fluid field pressure to be converted into electric pressure signal output, and the temperature sensor unit is used for blade tip
Environment temperature is converted into temperature signal output；
Signal acquiring system, connects the thin film sensor, receive electric pressure signal from the thin film sensor and
Temperature signal simultaneously converts thereof into digital signal output.
Preferably, the compressor includes stator and the rotor that is co-axially located in stator；The stator includes casing
With several stator blades being arranged on the casing inner sidewall, the rotor includes shaft and several movable vanes for being arranged in shaft,
The stator blade and the movable vane interlaced arrangement, the rotor are rotated relative to stator.
Preferably, peripherally disposed on the casing inner sidewall have a groove, the thin film sensor is arranged in institute
It states in groove, and the thin film sensor is opposite with the movable vane blade tip.
Preferably, the arc for being coated with wear-resisting glue on the lateral surface of the thin film sensor, and being formed after the wear-resisting adhesive curing
Face is identical as the internal diameter of the casing inner sidewall.
Preferably, on the thin film sensor setting there are two and more than two piezoelectric sensor units, and two and
More than two sensor units are arranged in matrix form；A temperature sensor is provided on the thin film sensor, and described
Temperature sensor is arranged close to one of piezoelectric transducer.
Preferably, the thin film sensor includes higher level face, PV film layer and junior face, the PV film layer is arranged on described
Between grade face and the junior face；
Be provided in the PV film layer respectively with the pressure sensor unit, temperature sensor unit number consistent
One through-hole, the second through-hole are provided with piezo-electric material in the first through hole, are provided with thermal sensitivity material in second through-hole
Material, and the consistency of thickness of the thickness of the piezo-electric material and temperature-sensitive material and the PV film layer；
Copper face, institute are respectively provided with the first through hole, the second through-hole corresponding position on the higher level face and junior face
The piezo-electric material stated in copper face and first through hole on higher level face and junior face is electrically connected to form piezoelectric sensor unit, institute
The thermo-sensitive material stated in copper face and the second through-hole on upper pole face and junior face is electrically connected to form temperature sensor unit；It is described
Higher level face passes through lead with the copper face on junior face and connects the signal acquiring system.
Preferably, each copper face on the higher level face passes through lead output respectively connects the signal acquisition system
It unites, each copper face on the junior face connects the signal acquiring system by lead output again after being mutually electrically connected.
Preferably, the piezo-electric material uses PVDF piezoelectric membrane, the temperature-sensitive material is thin using Ni-Al temperature-sensitive
Film.
Preferably, the higher level face, junior face are all made of PET protection film.
Preferably, the signal acquiring system includes signal conditioning circuit, data acquisition device, the signal condition electricity
The electric signal containing noise that road is used to export thin film sensor carries out being processed and converted to can recognize electric signal, the data
Acquisition device is used to recognizable electric signal being converted into digital signal, finally shows on computers.
The present invention also provides a kind of compressor blade tip Flow Field Distribution method for real-time measurement, using compressor as described above
Blade tip Flow Field Distribution real-time measurement apparatus, specifically includes following steps：
Step 1: opened up on casing inner sidewall opposite with the blade tip of gas compressor moving blade at least one in compressor set it is recessed
Slot；
Step 2: installing thin film sensor in groove, and wear-resisting glue is coated on thin film sensor surface；Compressor starting
Movable vane blade tip generates flow field air pressure afterwards, and the fluid field pressure of blade tip and environment temperature are converted into electric signal and exported by thin film sensor；
Step 3: receiving the electric signal that thin film sensor transmits, and the electricity that will be received by signal acquiring system
Signal is converted into digital signal, and realization is shown on computers.
Preferably, step 2 further comprises：After wear-resisting adhesive curing, casing inner sidewall is integrally cut into same
Diameter.
Preferably, step 3 further comprises：The electricity containing noise that information acquisition system first exports thin film sensor
Signal carries out being processed and converted to can recognize electric signal, then identifiable electric signal is converted into digital signal.
The present invention due to using the technology described above, is allowed to compared with prior art, have the following advantages that and actively imitate
Fruit：
It 1, will be thin the present invention provides the real-time measurement apparatus and method of a kind of compressor blade tip flow field fluctuating pressure distribution
Film sensors are installed in casing inner sidewall groove and encapsulate, so that the installation of thin film sensor does not influence entire compressor system
Kinetic characteristics, can not destroy air-flow boundary, itself flowing and pressure be distributed in the case where, accurately measure blade tip gas
The pressure distribution situation for flowing flow field, to provide accurate reality for correlative studys such as subsequent stream pressure, Dynamic Characteristics of Gas Flow
Test data；
2, each sensor unit (including piezoelectric sensor unit and temperature sensor unit) in the present invention is arranged to battle array
Column so that thin film sensor sensitivity with higher, have wider frequency response bandwidth, accurately measure compressor dynamic gas
Flow the distribution situation of flow field forces；And the sensor unit in the present invention shares form connection using circuit, so as to limited
Space in more efficiently each sensor unit of arranged distribution；
3, it is not provided only with piezoelectric sensor unit on thin film sensor provided by the invention, also passes through temperature sensor list
The setting of member, it is convenient to measure corresponding temperature in real time, it is that the correlative studys such as stream pressure, Dynamic Characteristics of Gas Flow in compressor mention
For accurate experimental data；
4, thin film sensor thinner thickness provided by the invention, light softness facilitate cutting, it is easier in terms of meeting size
Requirement, the sensing element of arbitrary shape or size can be fabricated to, can be good at mutually bonding with various bonding agents, and pass
Cost is relatively low for sensor material.
Detailed description of the invention
In conjunction with attached drawing, by detailed description below, it can be more clearly understood that above-mentioned and other feature of the invention and excellent
Point, wherein：
Fig. 1 is compressor two-dimensional structure figure in the present invention；
Fig. 2 is thin film sensor scheme of installation in the present invention；
Fig. 3 is the overall schematic of thin film sensor in the present invention；
Fig. 4 is the schematic diagram of thin film sensor upper pole face in the present invention；
Fig. 5 is the schematic diagram of thin film sensor PV film layer in the present invention；
Fig. 6 is the schematic diagram of thin film sensor lower pole face in the present invention.
Specific embodiment
Referring to the attached drawing of the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be by being permitted
More different forms are realized, and should not be construed as being limited by the embodiment herein proposed.On the contrary, propose these embodiments be for
Reach sufficiently and complete disclosure, and so that the those skilled in the art is understood the scope of the present invention completely.These attached drawings
In, for clarity, it may be exaggerated the size and relative size in layer and region.
Referring to Fig.1, usual compressor includes the stator and rotor of coaxial arrangement, and rotor is located in stator；Wherein, stator packet
Several stator blades 2 for including casing 1 and being arranged on 1 inner sidewall of casing, rotor include shaft 3 and are arranged on 3 lateral wall of shaft
Several movable vanes 4, stator blade 2 and movable vane 4 separately come setting in axial direction；Meanwhile in order to prevent rotor during rotation with
1 inner sidewall of casing bumps against, and is provided with gap between the blade tip of movable vane 4 and the inner sidewall of casing 1.
The invention proposes a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus, for more accurately measuring movable vane leaf
Sharp flow field dynamic pressure distribution, to identify the Flow Field Distribution dynamic characteristic of compressor blade tip in engine.It, should referring to Fig. 2-6
Measuring device includes signal acquiring system and at least one thin film sensor 5, and thin film sensor 5 is used for will be at compressor blade tip
Pressure and temperature be converted into electric signal, and be conveyed to signal acquisition circuit, signal acquisition circuit again turns the electric signal of acquisition
Digital signal realization is turned to show on computers.
Thin film sensor 5 is arranged on 1 inner sidewall of casing opposite with 4 blade tip of movable vane, and thin film sensor 5 is along casing 1
The circumferential directions of side wall, as shown in figs. 1-2.Specifically, fluted, film is arranged on 1 inner sidewall circumferencial direction of casing
The side of sensor 5 is pasted in the groove by layers of two-sided；Preferably, layers of two-sided uses 3M 300LSE/9495 glue,
And this glue has splendid tack and holds viscosity, and can long-term resistance to temperature change resistant to high temperatures；Certainly, it can also be used in layers of two-sided
Other connection structures can also be used in addition to double-sided adhesive to be installed in groove, herein in the glue of his type, thin film sensor 5
With no restriction.One layer of wear-resisting glue is also coated on the lateral surface of thin film sensor, the cambered surface internal diameter formed after wear-resisting adhesive curing with
The internal diameter of 1 inner sidewall of casing is consistent, specifically can carry out integral grinding by the inner sidewall to casing 1 and realize at same diameter,
To guarantee the flat and smooth of 1 inner sidewall of casing, prevent from interfering movable vane normal rotation.Wherein, the size of thin film sensor 5 can basis
Concrete condition is set, herein with no restriction；Also with no restriction, each 4 blade tip of movable vane is corresponding for the setting number of thin film sensor 5
A thin film sensor 5 can be disposed at position, it can also selective arrangement as the case may be.The present invention passes film
Sensor is installed in casing inner sidewall groove and encapsulates, so that the installation of thin film sensor does not influence the dynamic of entire compressor system
Mechanical characteristic can accurately measure blade tip air-flow stream in the case where not destroying air-flow boundary, flowing itself and pressure distribution
The pressure distribution situation of field.
In the present embodiment, at least one piezoelectric sensor unit 501 and at least one temperature are provided on thin film sensor 5
Spend sensor unit 502.Specifically, thin film sensor 5 includes higher level face 505, PV film layer 506 and junior face 507, PV film layer
506 are arranged between higher level face 505 and junior face 507.
Laser has engraved at least one first through hole 5061 and at least one second through-hole 5062, first through hole in PV film layer
5061 and second through-hole 5062 can be for rectangular opening, round hole etc., specific size can also be set as the case may be, herein
With no restriction；Piezoelectric sensor unit 501, the second through-hole are used to form filled with piezo-electric material in first through hole 5061
Temperature sensor unit 502 is used to form filled with temperature-sensitive material in 5062, and piezo-electric material and temperature-sensitive material are set
Set the consistency of thickness of thickness Yu PV film layer 506.
Specifically using any material stringent limitation is not made herein for piezo-electric material and temperature-sensitive material, in this reality
It applies in example, preferably piezo-electric material selects PVDF piezoelectric membrane, and temperature-sensitive material selects Ni-Al thermosensitive film, PVDF is pressed
Conductive film and Ni-Al thermosensitive film cut into respectively with first through hole 5061,5062 same number of the second through-hole and size
Unit, be respectively placed in first through hole 5061, in the second through-hole 5062, PV film layer 506 and PVDF piezoelectric membrane, Ni-Al heat
Sensitive film thickness is identical.
Higher level face 505 and junior face 507 are separately positioned on the top and bottom of PV film layer 506, higher level face 505 and junior face
507 can be used insulating film material, and upper electrode layer is electroplated, and lead between higher level face 505 and junior face 507 and PV film layer 506
It crosses the modes such as conductive silver paste or efficient cryogenic conducting resinl to be connected, be passed so that higher level face 505 and junior face 507 constitute film
The positive and negative anodes of sensor 5；Preferably, PET protection film etc. can be selected in insulating film material, herein with no restriction.
It is tangible with first through hole 5061, the equal photoetching in 5062 corresponding position of the second through-hole in PV film layer 506 on higher level face 505
The consistent copper face 5051 of shape, size, number；Likewise, on junior face 507 with first through hole 5061, second in PV film layer 506
The equal photoetching in 5062 corresponding position of through-hole has the consistent copper face 5071 of shape, size, number；Copper face 5051, copper face
5071 pass through conduction with the piezo-electric material being located in first through hole 5061, the temperature-sensitive material being arranged in the second through-hole 5062
The modes such as silver paste or efficient cryogenic conducting resinl are connected, from constituting several piezoelectric sensor units 501 and temperature sensor
Unit 502.
In the present embodiment, piezoelectric sensor unit 501 and the setting number of temperature sensor unit 502 can be according to tools
Body situation is configured, and piezoelectric sensor unit 501 is arranged with size as small as possible and quantity as much as possible in matrix form
On casing 1, be conducive to the distribution of more accurate measurement air velocity distribution pressure；Each piezoelectric sensor unit 501 nearby can
Outfit is provided with a temperature sensor unit 502, and entire thin film sensor 5 can also only be provided with a temperature sensor unit
502, it is arranged herein according to specific actual conditions.In the present embodiment, the number of piezoelectric sensor unit is 18,18 pressures
The circumferential matrix distribution that 501 array of electrical sensor units is a 3*6；502 numbers of temperature sensor unit are 1, a temperature
The gas flow temperature that degree sensor unit 502 measures can be used as the temperature of practical each piezoelectric sensor unit 501 to be analyzed.
In the present embodiment, the end of thin film sensor 5 is provided with crimp type terminal 504, and standard can be used in crimp type terminal 504
Needle-shaped, the perforated metal terminal of spacing 2.54mm, herein with no restriction；As shown in Figure 4, higher level face 505 is used as film-sensing
The anode of device 5, each copper face 5051 on higher level face 505 is connected on crimp type terminal 504 by lead 503 respectively, and is led to
The extraction of crimp type terminal 504 is crossed, wherein lead 503 specifically can be used the modes such as plating silver paste lead and realize, herein with no restriction.Such as
Shown in Fig. 6, cathode of the junior face 507 as thin film sensor, several copper faces 5071 on junior face 507 are total using circuit
Mode carries out the transmission of signal, i.e., leads to again after being connected between several copper faces 5071 on junior face 507 by lead 503
It crosses a lead and is connected on crimp type terminal 504 and export；By the way of 5 cathode of thin film sensor of the present invention is shared using circuit, favorably
In the more cabling of arranged distribution in a limited space, cost is advantageously reduced.Electricity specifically can be used in each lead mentioned above
It plates the modes such as silver paste lead to realize, herein with no restriction.
In the present embodiment, when mover rotates, the blade tip of movable vane 4 generates fluid field pressure, on thin film sensor 5
After piezoelectric sensor unit 501 is by fluid field pressure, charge generation is had, and by crimp type terminal 504 that electric pressure signal is defeated
Out；Temperature sensor unit 502 incudes environment temperature simultaneously, and passes through 504 output temperature electric signal of crimp type terminal.Film-sensing
The signal acquiring system outside compressor is arranged in by lead connection again in the crimp type terminal 504 of 5 end of device, by electric pressure signal
It is transferred to signal acquiring system with temperature signal, wherein lead from 1 wall interior cabling of casing and is drawn.Signal acquiring system includes
There are signal conditioning circuit, data acquisition device etc., signal conditioning circuit is used for the electricity containing noise for exporting thin film sensor
Signal carries out being processed and converted to can recognize that electric signal, data acquisition device are used to recognizable electric signal being converted into digital letter
Number, it finally shows on computers, to obtain movable vane blade tip pressure distribution situation and temperature conditions.
The present invention also proposes a kind of compressor blade tip Flow Field Distribution method for real-time measurement, specifically includes following steps：
Step 1: opened up on casing inner sidewall opposite with the blade tip of gas compressor moving blade at least one in compressor set it is recessed
Slot；
Step 2: installing thin film sensor in groove, and wear-resisting glue is coated on thin film sensor surface；It is solid in wear-resisting glue
After change, casing inner sidewall is integrally cut into same internal diameter；Movable vane blade tip generates flow field air pressure, film-sensing after compressor starting
The fluid field pressure of blade tip and environment temperature are converted into electric signal output by device；
Step 3: receiving the electric signal that thin film sensor transmits by signal acquiring system, information acquisition system is first
The electric signal containing noise that thin film sensor exports be processed and converted to can recognize electric signal, then by identifiable electricity
Signal is converted into digital signal realization and shows on computers.
To sum up, a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus provided by the invention and method, in gas compressor blade
Sharp Flow Field Distribution research field compared with prior art, has following beneficial effect：
It 1, will be thin the present invention provides the real-time measurement apparatus and method of a kind of compressor blade tip flow field fluctuating pressure distribution
Film sensors are installed in casing inner sidewall groove and encapsulate, so that the installation of thin film sensor does not influence entire compressor system
Kinetic characteristics, can not destroy air-flow boundary, itself flowing and pressure be distributed in the case where, accurately measure blade tip gas
The pressure distribution situation for flowing flow field, to provide accurate reality for correlative studys such as subsequent stream pressure, Dynamic Characteristics of Gas Flow
Test data；
2, each sensor unit (including piezoelectric sensor unit and temperature sensor unit) in the present invention is arranged to battle array
Column so that thin film sensor sensitivity with higher, have wider frequency response bandwidth, accurately measure compressor dynamic gas
Flow the distribution situation of flow field forces；And the sensor unit in the present invention shares form connection using circuit, so as to limited
Space in more efficiently each sensor unit of arranged distribution；
3, it is not provided only with piezoelectric sensor unit on thin film sensor provided by the invention, also passes through temperature sensor list
The setting of member, it is convenient to measure corresponding temperature in real time, it is that the correlative studys such as stream pressure, Dynamic Characteristics of Gas Flow in compressor mention
For accurate experimental data；
4, thin film sensor thinner thickness provided by the invention, light softness facilitate cutting, it is easier in terms of meeting size
Requirement, the sensing element of arbitrary shape or size can be fabricated to, can be good at mutually bonding with various bonding agents, and pass
Cost is relatively low for sensor material.
Those skilled in the art should be understood that the present invention can be implemented without departing from by many other concrete forms
The spirit or scope of the present invention.Although the embodiment of the present invention has been described, it should be understood that the present invention should not be limited to these implementations
Example, those skilled in the art can make within spirit and scope of the invention as defined by the following claims variation and
Modification.
Claims (13)
1. a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus, which is characterized in that including：
At least one thin film sensor is arranged on the casing inner sidewall at the blade tip relative position with gas compressor moving blade；It is described
At least one piezoelectric sensor unit and at least one temperature sensor unit, the piezoelectric sensing are provided on thin film sensor
Device unit is used to for blade tip fluid field pressure to be converted into electric pressure signal output, and the temperature sensor unit is used for blade tip environment
Temperature transition is exported at temperature signal；
On the thin film sensor setting there are two and more than two piezoelectric sensor units, and two and more than two biographies
Sensor cell is arranged in matrix form；
The sensor unit shares form connection using circuit；
Signal acquiring system connects the thin film sensor, receives electric pressure signal and temperature from the thin film sensor
Electric signal simultaneously converts thereof into digital signal output.
2. according to compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, which is characterized in that the compressor packet
The rotor for including stator and being co-axially located in stator；If the stator includes casing and is arranged on the casing inner sidewall
Dry stator blade, the rotor include shaft and several movable vanes for being arranged in shaft, the stator blade and the movable vane interlaced arrangement, institute
Rotor is stated to rotate relative to stator.
3. according to compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, which is characterized in that on the inside of the casing
It is peripherally disposed on wall to have a groove, the thin film sensor setting in the groove, and the thin film sensor with
The movable vane blade tip is opposite.
4. according to compressor blade tip Flow Field Distribution real-time measurement apparatus as claimed in claim 3, which is characterized in that the film-sensing
Wear-resisting glue, and the internal diameter phase of the cambered surface formed after the wear-resisting adhesive curing and the casing inner sidewall are coated on the lateral surface of device
Together.
5. according to compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, which is characterized in that the film-sensing
A temperature sensor is provided on device, and the temperature sensor is arranged close to one of piezoelectric transducer.
6. according to compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, which is characterized in that the film-sensing
Device includes higher level face, PV film layer and junior face, and the PV film layer is arranged between the higher level face and the junior face；
It is provided in the PV film layer logical with the pressure sensor unit, temperature sensor unit number consistent first respectively
Hole, the second through-hole are provided with piezo-electric material in the first through hole, are provided with temperature-sensitive material in second through-hole, and
The consistency of thickness of the thickness of the piezo-electric material and temperature-sensitive material and the PV film layer；
Be respectively provided with copper face on the higher level face and junior face with the first through hole, the second through-hole corresponding position, it is described on
The piezo-electric material in copper face and first through hole on grade face and junior face is electrically connected to form piezoelectric sensor unit, it is described on
The thermo-sensitive material in copper face and the second through-hole on pole-face and junior face is electrically connected to form temperature sensor unit；The higher level
Face passes through lead with the copper face on junior face and connects the signal acquiring system.
7. according to compressor blade tip Flow Field Distribution real-time measurement apparatus as claimed in claim 6, which is characterized in that on the higher level face
Each copper face pass through lead output respectively and connect the signal acquiring system, each copper face phase on the junior face
The signal acquiring system is connected by lead output again after being mutually electrically connected.
8. according to compressor blade tip Flow Field Distribution real-time measurement apparatus as claimed in claim 6, which is characterized in that the piezoelectricity material
Material uses PVDF piezoelectric membrane, and the temperature-sensitive material uses Ni-Al thermosensitive film.
9. according to compressor blade tip Flow Field Distribution real-time measurement apparatus as claimed in claim 6, which is characterized in that the higher level face,
Junior face is all made of PET protection film.
10. according to compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, which is characterized in that the signal is adopted
Collecting system includes signal conditioning circuit, data acquisition device, what the signal conditioning circuit was used to export thin film sensor
Electric signal containing noise carries out being processed and converted to can recognize that electric signal, the data acquisition device are used for recognizable telecommunications
Number it is converted into digital signal, finally shown on computers.
11. a kind of compressor blade tip Flow Field Distribution method for real-time measurement, which is characterized in that using any one in claim 1-10
Compressor blade tip Flow Field Distribution real-time measurement apparatus described in, specifically includes following steps：
Groove is set Step 1: opening up on casing inner sidewall opposite with the blade tip of gas compressor moving blade at least one in compressor；
Step 2: installing thin film sensor in groove, and wear-resisting glue is coated on thin film sensor surface；It is moved after compressor starting
Leaf blade tip generates flow field air pressure, and the fluid field pressure of blade tip and environment temperature are converted into electric signal and exported by thin film sensor；
Step 3: receiving the electric signal that thin film sensor transmits, and the electric signal that will be received by signal acquiring system
It is converted into digital signal, realization is shown on computers.
12. according to the compressor blade tip Flow Field Distribution method for real-time measurement described in claim 11, which is characterized in that step 2 is into one
Step includes：After wear-resisting adhesive curing, casing inner sidewall is integrally cut into same internal diameter.
13. according to the compressor blade tip Flow Field Distribution method for real-time measurement described in claim 11, which is characterized in that step 3 is into one
Step includes：The electric signal containing noise that thin film sensor exports first is carried out being processed and converted to can recognize by information acquisition system
Electric signal, then identifiable electric signal is converted into digital signal.
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| CN111577664A (en) * | 2020-05-14 | 2020-08-25 | 中国航发沈阳发动机研究所 | Stator blade pressure pulsation measuring device |
| CN111537186B (en) * | 2020-06-23 | 2020-09-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Helicopter rotor blade model with embedded pressure sensor and manufacturing process thereof |
| CN113654717A (en) * | 2021-08-10 | 2021-11-16 | 上海交通大学 | Real-time measuring device for surface pulsating pressure field distribution of rotating blade |
| CN113932951A (en) * | 2021-10-22 | 2022-01-14 | 上海交通大学 | Real-time measurement film sensor and measurement system based on pressure and temperature composite field |
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