CN106092493A - 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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Abstract
The invention provides a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method, by arranging groove on the casing madial wall that the movable vane blade tip of compressor correspond to, and thin film sensor is installed in groove；Wherein, it is provided with at least one piezoelectric sensor unit and at least one temperature sensor unit on thin film sensor, piezoelectric sensing unit for being converted into electric pressure signal output by blade tip fluid field pressure, and temperature sensor unit for being converted into temperature signal output by blade tip environment temperature；Pass through a signal acquiring system again, receive electric pressure signal and the temperature signal that thin film sensor is caught, and convert thereof into data signal, it is achieved show 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, accurately measurement compressor dynamic air velocity distribution pressure distribution situation, for improving compressor work Prediction on Characteristics precision, promote compressor design level and there is important theory significance and practical value.
Description
Technical field
The present invention relates to compressor technical field, particularly to a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method.
Background technology
Compressor is the important component part of aero-engine, utilizes the blade of High Rotation Speed to air work done to realize improving the function of air pressure, to the aeroperformance important in inhibiting improving engine.Its dynamic characteristic has very significant impact for the overall dynamics characteristic of engine.It is typically made up of rotor and stator two parts, and its rotor includes armature spindle and movable vane, and stator includes casing and stator blade etc..For preventing movable vane and casing from colliding, need to leave certain gap during rotor High Rotation Speed in compressor, its blade tip pressure distribution is always the focus of compressor research field.Still being difficult to owing to its working mechanism is considerably complicated calculate prediction by theory, sealing structure limits and also makes experiment measurement very difficult.Capability of Compressor and stability are all had a major impact by blade tip Flow Field Distribution, how to measure fluid field pressure distribution most important to aeroperformance and the efficiency of compressor, it is possible to improving to the design of compressor and the performance of aero-engine provides guidance.
Due to the interaction of the complexity of tip structure and vortex, engine destabilization problems is well solved not yet, seriously constrains civilian and national defence aviation key equipment such as engine, gas turbine, the Development Level of steam turbine.Therefore the method for real-time measurement furtheing investigate compressor blade tip dynamic air current pressure distribution has important theory significance and practical value for the development promoting rotor dynamics, the precision improving the prediction of compressor Flow Field Distribution.Current research method mainly has three kinds: theoretical model, numerical simulation and experiment measurement (such as miniature five pore pressure force probe mensurations) etc., but the compressor situation that air velocity distribution is distributed in real work can be different, therefore cannot obtain the exact value of stream pressure in real time.The acquisition of current compressor blade tip pressure, depends on theoretical calculating and indirect measurement more, all there is bigger limitation in terms of precision with real-time.
Content of the invention
In order to solve the problems referred to above, the invention provides a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus, comprising:
At least one thin film sensor, be arranged on on the casing madial wall of the blade tip relative position of gas compressor moving blade；It is provided with at least one piezoelectric sensor unit and at least one temperature sensor unit on described thin film sensor, described piezoelectric sensor unit for being converted into electric pressure signal output by blade tip fluid field pressure, and described temperature sensor unit for being converted into temperature signal output by blade tip environment temperature；
Signal acquiring system, connects described thin film sensor, receives from the electric pressure signal of described thin film sensor and temperature signal and converts thereof into data signal output.
It is preferred that described compressor includes stator and the rotor being co-axially located in stator；Described stator includes casing and the some stator blades being arranged on described casing madial wall, and described rotor includes rotating shaft and the some movable vanes being arranged in rotating shaft, described stator blade and described movable vane interlaced arrangement, and described rotor rotates relative to stator.
It is preferred that peripherally disposed on described casing madial wall have a groove, described thin film sensor is arranged in described groove, and described thin film sensor is relative with described movable vane blade tip.
It is preferred that the cambered surface being formed after scribbling wear-resisting glue, and described wear-resisting adhesive curing on the lateral surface of described thin film sensor is identical with the internal diameter of described casing madial wall.
It is preferred that be provided with two and plural piezoelectric sensor unit on described thin film sensor, and two and plural sensor unit are, and matrix form is arranged；It is provided with a temperature sensor on described thin film sensor, and described temperature sensor is arranged near one of them piezoelectric transducer.
It is preferred that described thin film sensor includes higher level face, PV film layer and subordinate face, described PV film layer is arranged between described higher level face and described subordinate face；
It is provided with consistent with described pressure sensor unit, temperature sensor unit number respectively the first through hole, the second through hole on described PV film layer, it is provided with piezo-electric material in described first through hole, it is provided with temperature-sensitive material, and the consistency of thickness of the thickness of described piezo-electric material and temperature-sensitive material and described PV film layer in described second through hole；
It is respectively provided with copper face with described first through hole, the second through hole corresponding position on described higher level face and subordinate face, copper face on described higher level face and subordinate face and the piezo-electric material in the first through hole are electrically connected to form piezoelectric sensor unit, and the copper face on described upper pole face and subordinate face is electrically connected to form temperature sensor unit with the thermo-sensitive material in the second through hole；Copper face on described higher level face and subordinate face all connects described signal acquiring system by lead-in wire.
It is preferred that each copper face on described higher level face connects described signal acquiring system by a lead-in wire output respectively, each copper face on described subordinate face connects described signal acquiring system by a lead-in wire output after being mutually electrically connected again.
It is preferred that described piezo-electric material uses PVDF piezoelectric membrane, described temperature-sensitive material uses Ni-Al thermosensitive film.
It is preferred that described higher level face, subordinate face all use PET protection film.
Preferably, described signal acquiring system includes signal conditioning circuit, data acquisition unit, described signal conditioning circuit is for carrying out being processed and converted to the recognizable signal of telecommunication signal of telecommunication containing noise of thin film sensor output, described data acquisition unit, for the recognizable signal of telecommunication is converted into data signal, finally shows on computers.
Present invention also offers a kind of compressor blade tip Flow Field Distribution method for real-time measurement, use compressor blade tip Flow Field Distribution real-time measurement apparatus as above, specifically include following steps:
Offer on step one, casing madial wall at least relative with the blade tip of gas compressor moving blade at one in compressor and put groove；
Step 2, thin film sensor is installed in groove, and coats wear-resisting glue on thin film sensor surface；After compressor starts, movable vane blade tip produces flow field air pressure, and fluid field pressure and the environment temperature of blade tip are converted into signal of telecommunication output by thin film sensor；
Step 3, the signal of telecommunication being transmitted by signal acquiring system reception thin film sensor, and the signal of telecommunication receiving is converted into data signal, it is achieved show on computers.
It is preferred that step 2 farther includes: after wear-resisting adhesive curing, casing madial wall is integrally cut into same internal diameter.
It is preferred that step 3 farther includes: the signal of telecommunication containing noise of thin film sensor output first is carried out being processed and converted to the recognizable signal of telecommunication by information acquisition system, the more discernible signal of telecommunication is converted into data signal.
Due to the fact that the above technical scheme of employing, be allowed to compared with prior art, have the following advantages that and good effect:
1st, the invention provides real-time measurement apparatus and the method for a kind of compressor blade tip flow field fluctuating pressure distribution, in thin film sensor is installed to casing madial wall groove and encapsulate, the installation making thin film sensor does not affect the dynamics of whole compressor system, can be in the case of not destroying air-flow border, flowing itself and pressure distribution, accurately measure the pressure distribution situation of blade tip air velocity distribution, thus provide experimental data accurately for correlative studys such as follow-up stream pressure, Dynamic Characteristics of Gas Flows；
2nd, each sensor unit in the present invention (including piezoelectric sensor unit and temperature sensor unit) is arranged to array, make thin film sensor have higher sensitivity, have wider frequency response bandwidth, accurately measure the distribution situation of compressor dynamic air velocity distribution power；And sensor unit in the present invention uses loop to share form connects, thus can in limited space each sensor unit of more efficiently arranged distribution；
3rd, it is not provided only with piezoelectric sensor unit on the thin film sensor that the present invention provides, setting also by temperature sensor unit, conveniently measure corresponding temperature in real time, provide experimental data accurately for correlative studys such as the stream pressure in compressor, Dynamic Characteristics of Gas Flows；
4th, the thin film sensor thinner thickness that the present invention provides, the soft convenient cutting of light weight, it is easier to the requirement in terms of meeting size, can be fabricated to the sensing element of arbitrary shape or size, can be good at mutually boning with various bonding agents, and sensor material cost is relatively low.
Brief description
In conjunction with accompanying drawing, by detailed description below, the above-mentioned and other feature and advantage of the present invention can be more clearly understood that, 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.
Detailed description of the invention
See the accompanying drawing of the embodiment of the present invention, the present invention is described in more detail.But, the present invention can be realized by many multi-forms, and the embodiment that should not be construed as by herein proposing is limited.On the contrary, proposing these embodiments is to reach fully and complete disclosure, and makes those skilled in the art understand the scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative size in layer and region.
With reference to Fig. 1, usual compressor includes stator and the rotor being coaxially disposed, and rotor is positioned at stator；Wherein, stator includes casing 1 and the some stator blades 2 being arranged on casing 1 madial wall, and rotor includes rotating shaft 3 and the some movable vanes 4 being arranged on rotating shaft 3 lateral wall, and axially upper stator blade 2 and movable vane 4 come setting separately；Meanwhile, it in order to prevent rotor from bumping against with casing 1 madial wall in rotation process, between the blade tip of movable vane 4 and the madial wall of casing 1, is provided with gap.
The present invention proposes a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus, for measuring movable vane blade tip flow field dynamic pressure distribution more accurately, thus the Flow Field Distribution dynamic characteristic of compressor blade tip in identifying engine.With reference to Fig. 2-6, this measurement apparatus includes signal acquiring system and at least one thin film sensor 5, thin film sensor 5 is for being converted into the signal of telecommunication by the pressure and temperature at compressor blade tip, and flowing to signal acquisition circuit, the signal of telecommunication of acquisition is converted into data signal and realizes showing on computers by signal acquisition circuit again.
Thin film sensor 5 is arranged on casing 1 madial wall relative with movable vane 4 blade tip, and thin film sensor 5 is along the circumferential directions of casing 1 madial wall, as shown in figs. 1-2.Concrete, casing 5 madial wall circumferencial direction is provided with groove, the side of thin film sensor 5 is pasted in this 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 the change of Long-term Anti high temperature resistance to temperature；Certainly, layers of two-sided may be used without other kinds of glue, and thin film sensor 5 may be used without other attachment structure in addition to double faced adhesive tape and is installed in groove, is not all restricted herein.It is also coated with one layer of wear-resisting glue on the lateral surface of thin film sensor, the cambered surface internal diameter being formed after wear-resisting adhesive curing is consistent with the internal diameter of casing 5 madial wall, specifically same diameter can be become to realize by carrying out integral grinding to the madial wall of casing 5, to ensure the flat smooth of casing 5 madial wall, prevent from hindering movable vane normal rotation.Wherein, the size of thin film sensor 5 can set as the case may be, is not restricted herein；The number that arranges of thin film sensor 5 is not also restricted, and each movable vane 4 blade tip corresponding position all can be disposed with a thin film sensor 5, it is also possible to optionally arranges as the case may be.In thin film sensor is installed to casing madial wall groove by the present invention and encapsulate, the installation making thin film sensor does not affect the dynamics of whole compressor system, the pressure distribution situation of blade tip air velocity distribution can be accurately measured in the case of not destroying air-flow border, flowing itself and pressure distribution.
In the present embodiment, thin film sensor 5 is provided with at least one piezoelectric sensor unit 501 and at least one temperature sensor unit 502.Concrete, thin film sensor 5 includes higher level face the 505th, PV film layer 506 and subordinate face 507, and PV film layer 506 is arranged between higher level face 505 and subordinate face 507.
On PV film layer, laser has engraved at least one the first through hole 5061 and at least one second through hole 5062, and the first through hole 5061 and the second through hole 5062 can be rectangular opening, circular port etc., and its concrete size sets also dependent on concrete condition, is not all restricted herein；It is filled with piezo-electric material for forming piezoelectric sensor unit 501 in first through hole 5061, it is filled with temperature-sensitive material for forming temperature sensor unit 502 in second through hole 5062, and the consistency of thickness that thickness and PV film layer 506 are set of piezo-electric material and temperature-sensitive material.
Specifically use any material not make strict restriction for piezo-electric material and temperature-sensitive material herein, in the present embodiment, preferably piezo-electric material selects PVDF piezoelectric membrane, temperature-sensitive material selects Ni-Al thermosensitive film, PVDF piezoelectric membrane and Ni-Al thermosensitive film are cut into the unit respectively with the first through hole the 5061st, the second through hole 5062 same number and size, being respectively placed in the first through hole the 5061st, the second through hole 5062, PV film layer 506 is identical with PVDF piezoelectric membrane, Ni-Al thermosensitive film thickness.
Higher level face 505 and subordinate face 507 are separately positioned on the top and bottom of PV film layer 506, higher level face 505 and subordinate face 507 all can use insulating film material, and electroplate upper electrode layer, it is connected by modes such as conductive silver paste or efficient cryogenic conducting resinls between higher level face 505 and subordinate face 507 with PV film layer 506, so that higher level face 505 and subordinate face 507 constitute the both positive and negative polarity of thin film sensor 5；Preferably, insulating film material can be selected for PET protection film etc., is not restricted herein.
There is the consistent copper face 5051 of shape, size, number with the 5061st, the second equal photoetching in through hole 5062 corresponding position of the first through hole on PV film layer 506 on higher level face 505；Same, subordinate face 507 there is the consistent copper face 5061 of shape, size, number with the 5061st, the second equal photoetching in through hole 5062 corresponding position of the first through hole on PV film layer 506；The 5051st, copper face 5061, copper face is connected by modes such as conductive silver paste or efficient cryogenic conducting resinls with the piezo-electric material being located in the first through hole 5061, the temperature-sensitive material being arranged in the second through hole 5062, from constituting several piezoelectric sensor unit 501 and temperature sensor unit 502.
In the present embodiment, number is set all can being configured as the case may be of piezoelectric sensor unit 501 and temperature sensor unit 502, piezoelectric sensor unit 501 is that matrix form is arranged on casing 5 with size little as far as possible and quantity as much as possible, is conducive to measuring more accurately the distribution of air velocity distribution pressure；Can be equipped with near each piezoelectric sensor unit 501 and be provided with a temperature sensor unit 502, whole thin film sensor 5 also can only be provided with a temperature sensor unit 502, arranges herein according to concrete actual conditions.In the present embodiment, the number of piezoelectric sensor unit is 18, and 18 piezoelectric sensor unit 501 arrays are the circumferential matrix distribution of a 3*6；Temperature sensor unit 502 number is 1, and the gas flow temperature of temperature sensor unit 502 measurement can be analyzed as the temperature of actual each piezoelectric sensor unit 501.
In the present embodiment, the end of thin film sensor 5 is provided with crimp type terminal 504, and crimp type terminal 504 can use the needle-like of normal pitch 2.54mm, perforated metal terminal, is not restricted herein；As shown in Figure 4, higher level face 505 is as the positive pole of thin film sensor 5, each copper face 5051 on higher level face 505 is connected on crimp type terminal 504 by lead-in wire 503 respectively, and drawn by crimp type terminal 504, wherein lead-in wire 503 specifically can use the modes such as electrosilvering slurry lead-in wire to realize, is not restricted herein.As shown in Figure 6, subordinate face 507 is as the negative pole of thin film sensor, the mode that some copper faces 5071 on subordinate face 507 use loop to share carries out the transmission of signal, is connected on crimp type terminal 504 output by a lead-in wire again after being i.e. connected by lead-in wire 503 between the some copper faces 5071 on subordinate face 507；Thin film sensor 5 negative pole of the present invention uses the mode that loop shares, and is conducive to the cabling that arranged distribution is more in the confined space, advantageously reduces cost.Each lead-in wire mentioned above specifically can use the modes such as electrosilvering slurry lead-in wire to realize, is not restricted herein.
In the present embodiment, when mover rotates, the blade tip of movable vane 4 produces fluid field pressure, and the piezoelectric sensor unit 501 on thin film sensor 5, by after fluid field pressure, is had electric charge and produces, and exported electric pressure signal by crimp type terminal 504；Temperature sensor unit 502 induced environment temperature simultaneously, and pass through the crimp type terminal 504 output temperature signal of telecommunication.The crimp type terminal 504 of thin film sensor 5 end is connected by lead-in wire and is arranged on signal acquiring system outside compressor, and electric pressure signal and temperature signal are transferred to signal acquiring system, and wherein go between in casing 5 wall cabling drawing.Signal acquiring system includes signal conditioning circuit, data acquisition unit etc., signal conditioning circuit is for carrying out being processed and converted to the recognizable signal of telecommunication signal of telecommunication containing noise of thin film sensor output, data acquisition unit is for being converted into data signal by the recognizable signal of telecommunication, finally show on computers, thus 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:
Offer on step one, casing madial wall at least relative with the blade tip of gas compressor moving blade at one in compressor and put groove；
Step 2, thin film sensor is installed in groove, and coats wear-resisting glue on thin film sensor surface；After wear-resisting adhesive curing, casing madial wall is integrally cut into same internal diameter；After compressor starts, movable vane blade tip produces flow field air pressure, and fluid field pressure and the environment temperature of blade tip are converted into signal of telecommunication output by thin film sensor；
Step 3, the signal of telecommunication being transmitted by signal acquiring system reception thin film sensor, thin film sensor output is first carried out being processed and converted to the recognizable signal of telecommunication containing the signal of telecommunication of noise by information acquisition system, the more discernible signal of telecommunication is converted into data signal realizes showing on computers.
To sum up, the present invention provides a kind of compressor blade tip Flow Field Distribution real-time measurement apparatus and method, in compressor blade tip Flow Field Distribution research field compared with prior art, possess following beneficial effect:
1st, the invention provides real-time measurement apparatus and the method for a kind of compressor blade tip flow field fluctuating pressure distribution, in thin film sensor is installed to casing madial wall groove and encapsulate, the installation making thin film sensor does not affect the dynamics of whole compressor system, can be in the case of not destroying air-flow border, flowing itself and pressure distribution, accurately measure the pressure distribution situation of blade tip air velocity distribution, thus provide experimental data accurately for correlative studys such as follow-up stream pressure, Dynamic Characteristics of Gas Flows；
2nd, each sensor unit in the present invention (including piezoelectric sensor unit and temperature sensor unit) is arranged to array, make thin film sensor have higher sensitivity, have wider frequency response bandwidth, accurately measure the distribution situation of compressor dynamic air velocity distribution power；And sensor unit in the present invention uses loop to share form connects, thus can in limited space each sensor unit of more efficiently arranged distribution；
3rd, it is not provided only with piezoelectric sensor unit on the thin film sensor that the present invention provides, setting also by temperature sensor unit, conveniently measure corresponding temperature in real time, provide experimental data accurately for correlative studys such as the stream pressure in compressor, Dynamic Characteristics of Gas Flows；
4th, the thin film sensor thinner thickness that the present invention provides, the soft convenient cutting of light weight, it is easier to the requirement in terms of meeting size, can be fabricated to the sensing element of arbitrary shape or size, can be good at mutually boning with various bonding agents, and sensor material cost is relatively low.
Those skilled in the art should be understood that the present invention can be implemented without departing from the spirit or scope of the present invention by other concrete forms many.Although having been described for embodiments of the invention, it should be understood that the present invention should not be limited to these embodiments, making within the spirit and scope of the invention that those skilled in the art can define such as appended claims and changing and modifications.
Claims (13)
1. a compressor blade tip Flow Field Distribution real-time measurement apparatus, it is characterised in that include:
At least one thin film sensor, be arranged on on the casing madial wall of the blade tip relative position of gas compressor moving blade；It is provided with at least one piezoelectric sensor unit and at least one temperature sensor unit on described thin film sensor, described piezoelectric sensor unit for being converted into electric pressure signal output by blade tip fluid field pressure, and described temperature sensor unit for being converted into temperature signal output by blade tip environment temperature；
Signal acquiring system, connects described thin film sensor, receives from the electric pressure signal of described thin film sensor and temperature signal and converts thereof into data signal output.
2. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, it is characterised in that described compressor includes stator and the rotor being co-axially located in stator；Described stator includes casing and the some stator blades being arranged on described casing madial wall, and described rotor includes rotating shaft and the some movable vanes being arranged in rotating shaft, described stator blade and described movable vane interlaced arrangement, and described rotor rotates relative to stator.
3. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, it is characterized in that, peripherally disposed on described casing madial wall have a groove, and described thin film sensor is arranged in described groove, and described thin film sensor is relative with described movable vane blade tip.
4. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 3, it is characterised in that the cambered surface being formed after scribbling wear-resisting glue, and described wear-resisting adhesive curing on the lateral surface of described thin film sensor is identical with the internal diameter of described casing madial wall.
5. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, it is characterised in that be provided with two and plural piezoelectric sensor unit on described thin film sensor, and two and plural sensor unit are that matrix form is arranged；It is provided with a temperature sensor on described thin film sensor, and described temperature sensor is arranged near one of them piezoelectric transducer.
6., according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, it is characterised in that described thin film sensor includes higher level face, PV film layer and subordinate face, described PV film layer is arranged between described higher level face and described subordinate face；
It is provided with consistent with described pressure sensor unit, temperature sensor unit number respectively the first through hole, the second through hole on described PV film layer, it is provided with piezo-electric material in described first through hole, it is provided with temperature-sensitive material, and the consistency of thickness of the thickness of described piezo-electric material and temperature-sensitive material and described PV film layer in described second through hole；
It is respectively provided with copper face with described first through hole, the second through hole corresponding position on described higher level face and subordinate face, copper face on described higher level face and subordinate face and the piezo-electric material in the first through hole are electrically connected to form piezoelectric sensor unit, and the copper face on described upper pole face and subordinate face is electrically connected to form temperature sensor unit with the thermo-sensitive material in the second through hole；Copper face on described higher level face and subordinate face all connects described signal acquiring system by lead-in wire.
7. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 6, it is characterized in that, each copper face on described higher level face connects described signal acquiring system by a lead-in wire output respectively, and each copper face on described subordinate face connects described signal acquiring system by a lead-in wire output after being mutually electrically connected again.
8., according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 6, it is characterised in that described piezo-electric material uses PVDF piezoelectric membrane, described temperature-sensitive material uses Ni-Al thermosensitive film.
9. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 6, it is characterised in that described higher level face, subordinate face all use PET protection film.
10. according to the compressor blade tip Flow Field Distribution real-time measurement apparatus described in claim 1, it is characterized in that, described signal acquiring system includes signal conditioning circuit, data acquisition unit, described signal conditioning circuit is for carrying out being processed and converted to the recognizable signal of telecommunication signal of telecommunication containing noise of thin film sensor output, described data acquisition unit, for the recognizable signal of telecommunication is converted into data signal, finally shows on computers.
11. 1 kinds of compressor blade tip Flow Field Distribution method for real-time measurement, it is characterised in that use the compressor blade tip Flow Field Distribution real-time measurement apparatus described in any one in claim 1-10, specifically include following steps:
Offer on step one, casing madial wall at least relative with the blade tip of gas compressor moving blade at one in compressor and put groove；
Step 2, thin film sensor is installed in groove, and coats wear-resisting glue on thin film sensor surface；After compressor starts, movable vane blade tip produces flow field air pressure, and fluid field pressure and the environment temperature of blade tip are converted into signal of telecommunication output by thin film sensor；
Step 3, the signal of telecommunication being transmitted by signal acquiring system reception thin film sensor, and the signal of telecommunication receiving is converted into data signal, it is achieved show on computers.
12. according to the compressor blade tip Flow Field Distribution method for real-time measurement described in claim 11, it is characterised in that step 2 farther includes: after wear-resisting adhesive curing, and casing madial wall 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, it is characterized in that, step 3 farther includes: the signal of telecommunication containing noise of thin film sensor output first is carried out being processed and converted to the recognizable signal of telecommunication by information acquisition system, the more discernible signal of telecommunication is converted into data signal.
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| CN106092493B (en) | 2018-11-16 |
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