CN107655589A - A kind of temperature, pressure combined measurement system and measuring method - Google Patents
A kind of temperature, pressure combined measurement system and measuring method Download PDFInfo
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
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- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 claims description 8
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 8
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- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 6
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- 239000000126 substance Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
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- -1 wherein Inorganic materials 0.000 claims description 2
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- 230000003287 optical effect Effects 0.000 description 16
- 238000011088 calibration curve Methods 0.000 description 12
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910003130 ZrOCl2·8H2O Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
Abstract
The present invention relates to temperature, pressure combined measurement system and measuring method, the system includes temperature, pressure probe, the fiber coupler being connected with temperature, pressure probe, the LASER Light Source being connected by optical fiber with fiber coupler import, the spectroscope connected by optical fiber and fiber coupler outlet and the signal processing unit for being arranged on spectroscope different light paths rear, the surface coating Zr of the temperature, pressure probe3Y4O12:Eu mixes phosphorescent layer, the Zr with MFG3Y4O12:Eu mixes Zr in phosphorescent layer with MFG3Y4O12:Eu and MFG mass ratio is (800~2500)：1.Compared with prior art, the present invention has can be with non-contact method combined measurement temperature field and pressure field, measurement temperature height (500 1000 DEG C), the characteristics of temperature and high pressure measurement accuracy, shape according to temperature, pressure measurement probe is changed adapts to the temperature, pressure under varying environment and measured, temperature field and pressure field are not influenceed, it is applied widely, suitable for the temperature of measurement aero-engine or ground gas turbine under in running order.
Description
Technical field
The present invention relates to inorganic optical material technical field, and in particular to a kind of temperature, pressure combined measurement system and measurement
Method.
Background technology
With the appearance and development of the industrial equipments such as gas turbine, aero-engine, modern project technology and scientific application
In measurement for temperature, pressure in high temperature and high pressure environment, it appears it is increasingly important.But these maximum conditions of HTHP beyond
The measurement range of traditional measurement method, it is necessary to carry out the research based on the new technology such as new distinct temperature and pressure sensor.
In existing temperature test technology, temperature is typically based primarily upon depending on resistance, pyroelectric effect (thermocouple), colour developing are put
Reflect, the velocity of sound in gas, the spatial distribution of electromagnetic heat radiation etc. of scattering or transmitting.In practical application, typically there are thermocouple, spoke
The methods of penetrating thermometer.However, traditional thermocouple is under the severe rugged environment of HTHP, due to being the measurement using contact
Method, the rapid aging of meeting, service life greatly shorten.Radiation thermometer can by the environment of measuring part and HTHP every
Open, but it is highly prone to measuring environment and measures the influence of body surface grey-body radiation emission ratio, measurement is highly prone to do
Disturb.For existing pressure measxurement, perforate usually is carried out in target surface, uses the method for mechanical pressure sensors.The party
Method destroys surface texture, not only breaks up test target pressure field structure, and for the gas turbine in high-speed motion, aviation
The working environments such as engine, its installation are also highly prone to limit.
With the development of advanced aero engine, gas turbine technology, efficient turbine rate, the premise of long-life are being pursued
Under, aero-engine, gas turbine temperature and pressure improve constantly.Temperature and pressure is accurately and efficiently measured, is extremely to have
Meaning.In the update of aero-engine and gas turbine, the research and development of HTHP measuring technology are played very
Important effect.At present to the requirement of temperature and pressure sensor, it is mainly：Broad quantum, precision are high, dynamic response is good, small-sized
Change, non-contact, anti-adverse environment ability is strong etc..
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of broad quantum, precision
Temperature, pressure combined measurement system and measuring method high, dynamic response is good.
The purpose of the present invention can be achieved through the following technical solutions：A kind of temperature, pressure combined measurement system, the survey
Amount system is entered including temperature, pressure probe, the fiber coupler being connected with temperature, pressure probe, by optical fiber and fiber coupler
The LASER Light Source of mouth connection, the spectroscope of connection is exported by optical fiber and fiber coupler and is arranged on spectroscope different light paths
The signal processing unit at rear, the surface coating Zr of the temperature, pressure probe3Y4O12:Eu mixes phosphorescent layer with MFG, described
Zr3Y4O12:Eu mixes Zr in phosphorescent layer with MFG3Y4O12:Eu and MFG mass ratio is (800~2500)：1.
The system be used for measure aero-engine or ground gas turbine it is in running order under temperature and pressure.In work
Make under state, LASER Light Source launches light-pulse generator, in the presence of light-pulse generator, on temperature, pressure measurement probe
Zr3Y4O12:Eu mixes phosphorescent layer with MFG and sends phosphorescent signal, and the phosphorescence includes temperature information and pressure information, the mixing phosphorescence
Signal is divided into two ways of optical signals by spectroscope, and each signal processing unit of this two ways of optical signals is received and handled, and obtains phosphorescence
Attenuation curve, phosphorescent lifetime is converted into using attenuation equation.According to temperature phosphorescent lifetime and the calibration curve of temperature relation
Obtain temperature information；According to pressure phosphorescent lifetime and the calibration curve of pressure dependence, the amendment of combination temperature information, can be pressed
Force information.
Zr3Y4O12:Eu and MFG is effective luminescent material, has good optical property, wherein, for Zr3Y4O12:
Eu, its optical characteristics have certain contact to temperature and pressure.Its temperature measurement range, 300~1000 DEG C can be reached at present,
Response for pressure, a wide range of covering from negative pressure to malleation can also be realized.It is and then only right for MFG, its optical property
Temperature is sensitive, does not have any response to pressure change, temperature-measuring range can be arrived to -273~800 DEG C.According to the light of two kinds of materials
Characteristic is learned, can very easily obtain the temperature and pressure information of its local environment.And can when being prepared due to two kinds of materials
The particle that diameter is less than 5 microns is made, its measurement space resolution ratio will be very high.
According to its principle of luminosity of two kinds of materials, both materials are combined, temperature information is obtained using MFG, uses
Zr3Y4O12:Eu obtains temperature and pressure related information, and the temperature information further obtained using MFG is to Zr3Y4O12:Eu is obtained
Pressure and temp information be modified, obtain pressure information, be prepared into a kind of temperature, pressure combined measurement probe, be very feasible
's.And the temperature, pressure combined measurement probe has, and broad quantum, precision are high, dynamic response is good, minimize, be non-contact, anti-evil
The advantages that bad environment capacity is strong.
The Zr3Y4O12:ZrO is included in Eu2、Y2O3And Eu2O3, wherein, Y2O3Molar fraction be 35%~45%,
Eu2O3Molar fraction be 0.1%~2%, the chemical formula of the MFG is 3.5MgO0.5MgF2·GeO2:Mn。
The Zr3Y4O12:Eu particle diameter is 40~100 μm, and MFG particle diameter is 5~15 μm.
The Zr3Y4O12:Eu mixes phosphorescent layer with MFG and is coated in temperature, pressure probe table by the method for plasma spraying
Face, the Zr3Y4O12:The thickness that Eu mixes phosphorescent layer with MFG is 5~50 μm, because phosphorescent layer is coated using plasma spray
Standby, in spraying process, particle melts at high temperature under high pressure, and target surface is sprayed to molten condition, so the phosphorus prepared
Photosphere thickness can reach 5~50um.Zr3Y4O12:Eu is wet mixing with MFG mixing phosphor powders mixed method, and is dried.Specifically
For：X parts Zr is weighed by mixed proportion x3Y4O12:Eu and 1 part of MFG.The MFG weighed is put into the weight of isopropanol, isopropanol and MFG
Amount is than being 1000:1. the Zr that will be weighed3Y4O12:Eu is put into MFG and suspension made of isopropanol, is stirred, whipping process
Untill isopropanol all volatilization.The Zr that will be mixed3Y4O12:Eu is dried with MFG mixing phosphor powders, drying temperature
250 DEG C, time 2 h.By the Zr of synthesis3Y4O12:Eu is granulated with MFG mixing phosphor powder by craft or spray drying process,
PVA binding agents are added, are dried, sieving, so as to obtain good fluidity, suitably carry out the powder of plasma spraying.
The temperature, pressure probe is cylindrical or disc-shaped, and the material of the temperature, pressure probe is signle crystal alumina,
Other simple shapes such as bar-shaped of similar thermocouple are can be made into, in favor of reducing probe size, and increase receptor area.
The spectroscope is in isosceles triangle, and spectroscopical base is connected with optical fiber, two through light splitting light path respectively from
Projected in a spectroscopical waist, the signal processing unit includes processes temperature signal subelement and pressure signal processing is single
Member；
The processes temperature signal subelement include being arranged on temperature speculum in a light path, temperature phosphorescence filter,
Temperature photomultiplier, temperature and resistance case and oscillograph；
The pressure signal processing subelement includes baroreflex mirror, the filter of pressure phosphorescence being arranged in another light path
Mirror, temperature photomultiplier, piezoresistive case and oscillograph.
The measuring system includes a signal projector, and the signal projector is connected with LASER Light Source.
The alternative condition of optical filtering is：For temperature phosphorescent signal, using 620~670nm bandpass filter mirror；For pressure
Power phosphorescent signal (Zr3Y4O12:Eu signals), using 550~600nm bandpass filter mirror.
The alternative condition of laser source wavelength is：380~410nm.
The power of LASER Light Source is 0~15W.
The resistance adjustment scope of resistance box is 100~1000 Ω.
In actual use, surface deposition there is into Zr3Y4O12:Eu and the signle crystal alumina other end of MFG phosphorescent layers polish
Connection fiber coupler simultaneously connects optical fiber, and optical fiber is sequentially connected LASER Light Source and signal projector all the way, and another way optical fiber is successively
Connect spectroscope, optical filtering, photomultiplier detector (i.e. PMT detectors), resistance box, oscillograph.Wherein, the signal of light source
Transmitter is also connected with oscillograph, and light signal spectral line can also be obtained from oscillograph.Signal projector causes LASER Light Source
Continuous light source be changed into light-pulse generator, pulse width is 1~5ms, and the pulse period is 10~1000ms.
A kind of method that temperature, pressure combined measurement is carried out using measuring system as described above, including following steps：
(1) blasting treatment is carried out in temperature, pressure detecting probe surface, then by Zr by the way of plasma spraying3Y4O12:
Eu mixes phosphorescent layer with MFG and is coated in temperature, pressure detecting probe surface；
(2) each part is assembled in order, forms measuring system；
(3) control LASER Light Source to project light-pulse generator, temperature phosphor-decay curve and pressure phosphorescence are obtained in oscillograph
Attenuation curve, then temperature phosphor-decay curve utilize attenuation equation using attenuation equation and pressure phosphor-decay curve, acquisition
Temperature phosphorescent lifetime and pressure phosphorescent lifetime, so as to obtain temperature information and pressure information.
The pressure of the sandblasting is 0.1~0.7MPa, and shot blasting particles are the Al that particle diameter is 16~120 mesh2O3Particle；
It is 200~600 DEG C that the plasma spraying, which controls the temperature of matrix, and the spacing of spray gun and matrix is 90~250mm,
Spray gun translational speed is 300~1000mm/s, and powder feed rate is 10~70g/min, and powder feeding air-flow is 0.5~1.2L/min, spray
Painting voltage is 100~180V, and spraying current is 200~250A, and argon gas flow velocity is 40~120L/min, hydrogen flow rate is 15~
45L/min。
The width of the light-pulse generator is 1~5ms, and the pulse period is 10~1000ms.
The concrete principle of the inventive method is as follows：
(1) it is 1-5ms, pulse period 10- to control LASER Light Source to launch pulse width by signal projector
1000ms light-pulse generator；
(2) in the presence of light-pulse generator, the Zr on temperature, pressure measurement probe3Y4O12:Eu mixes phosphorescent layer hair with MFG
Go out phosphorescent signal, the phosphorescent signal is divided into two ways of optical signals by spectroscope
(3) this two ways of optical signals is filtered by optical filtering, and temperature is filtered off respectively with pressure phosphorescent signal
(4) temperature is each received with pressure phosphorescent signal by photomultiplier detector.
(5) temperature phosphorescent signal is converted into current signal and is sent to resistance box by photomultiplier detector, and is passed through
Current signal is converted to voltage signal by resistance box, and voltage signal is amplified, and is shown on oscillograph, obtains temperature phosphor-decay
Curve；
(6) by utilizing attenuation equation to temperature phosphor-decay curve, temperature phosphorescent lifetime is obtained；
(7) temperature information is obtained according to the calibration curve of temperature phosphorescent lifetime and temperature relation.
(8) pressure phosphorescent signal is converted into current signal and is sent to resistance box by photomultiplier detector, and is passed through
Current signal is converted to voltage signal by resistance box, and voltage signal is amplified, and is shown on oscillograph, obtains pressure phosphor-decay
Curve；
(9) by utilizing attenuation equation to pressure phosphor-decay curve, pressure phosphorescent lifetime is obtained；
(10) according to pressure phosphorescent lifetime and the calibration curve of pressure dependence, the amendment of combination temperature information, can be pressed
Force information.Wherein attenuation equation can use document M.D.Chambers, Clarke D R.Doped Oxides for High-
Temperature Luminescence and Lifetime Thermometry[J].Annual Review of
Materials Research,1915,39(1):325-359 and document Allison S W, Gillies G T.Remote
thermometry with thermographic phosphors:Instrumentation and applications[J]
.Review of Scientific Instruments,1997,68(7):Attenuation equation used in 2615-26.
Temperature, pressure measurement probe, which is installed on, needs the position of measurement temperature pressure, opens LASER Light Source, adjusts light source
Power, open PMT detectors, the resistance value of regulation resistance case.Light path is adjusted by adjusting spectroscope and speculum, enables PMT
Effectively receive signal, change oscillograph spectrum cumulative frequency 1-512 times, obtain two smooth phosphor-decay curves, use is soft
Part is fitted attenuation curve, obtains temperature phosphorescent lifetime (MFG signals) and temperature, pressure phosphorescent lifetime (Zr3Y4O12:Eu signals), it is right
Temperature value is obtained according to the calibration curve of MFG phosphorescent lifetimes and temperature.Compare Zr3Y4O12:The mark of Eu phosphorescent lifetimes and temperature, pressure
Determine curve, the temperature value measured with reference to MFG, obtain pressure value.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) due to using surface plasma spraying Zr3Y4O12:Eu and the signle crystal alumina temperature, pressure of MFG phosphorescent layers join
Measurement probe is closed, measurement temperature and pressure limit are wide, available for the high temperature for measuring -273-1000 DEG C, and -100kpa~2Mpa
Pressure.For resolution ratio up to μm rank, flexibility is good, can adapt to the temperature under varying environment according to the shape for changing signle crystal alumina
Degree and pressure measxurement, so as to not influence temperature field and pressure field, precision is high, applied widely；
(2) can be used in the very severe test environments such as engine turbine, combustion chamber, service life length is stable
Property it is good, measurement is simple and efficient, available for real-time measurement aero-engine, the temperature of ground gas turbine and pressure information, so as to
Aero-engine or the working condition of ground gas turbine are detected, it is economical and practical, it is easy to industrialized production, there is application well
Prospect.
Brief description of the drawings
Fig. 1 is the structural representation of temperature, pressure combined measurement system of the present invention；
Fig. 2 a are temperature phosphor-decay curve in embodiment 1；
Fig. 2 b are the calibration curve of temperature phosphorescent lifetime and temperature relation in embodiment 1；
Fig. 3 a are pressure phosphor-decay curve in embodiment 1；
Fig. 3 b are the calibration curve of pressure phosphorescent lifetime and pressure dependence in embodiment 1.
Wherein, 1 is signal projector, and 2 be LASER Light Source, and 3 be optical fiber, and 4 be temperature, pressure probe, and 5 be fiber coupler,
6 be Zr3Y4O12:Eu mixes phosphorescent layer with MFG, and 7 be spectroscope, and 8 be speculum, and 9 be temperature phosphorescence filter, and 10 be pressure phosphorescence
Filter, 11 be temperature photomultiplier, and 12 be pressure photoelectric multiplier tube, and 13 be temperature and resistance case, and 14 be piezoresistive case, and 15 are
Oscillograph.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of temperature, pressure combined measurement system, its structure is as shown in figure 1, including signal projector 1 and signal projector
LASER Light Source 2, temperature, pressure probe 4 and the temperature, pressure signal transacting being used cooperatively with temperature, pressure probe 4 of 1 electrical connection
Unit, the processes temperature signal unit include spectroscope 7, speculum 8, temperature phosphorescence filter 9, pressure phosphorescence filter 10, temperature
Photomultiplier 11, the temperature and resistance case 13 being connected with temperature photomultiplier 11, pressure photoelectric multiplier tube 12 and pressure photoelectric
The piezoresistive case 14 that multiplier tube 12 connects and the oscillograph 15 for gathering signal.The surface spraying of temperature, pressure probe 4 has
Zr3Y4O12:Eu mixes phosphorescent layer 6 with MFG, and is connected respectively with LASER Light Source 2, spectroscope 7 by optical fiber 3；Fiber coupler 5
Integrated link optical fiber 3 and temperature, pressure probe 4.
Wherein, temperature, pressure probe 4 is that surface plasma sprays Zr3Y4O12:Eu mixes the monocrystalline oxygen of phosphorescent layer 6 with MFG
Change aluminium temperature, pressure combined measurement probe.Zr3Y4O12:Eu mixes Zr in phosphorescent layer 6 with MFG3Y4O12:Eu chemical formula is ZrO2+
45wt%Y2O3+ (0.1-2mol%) Eu2O3, MFG chemical formula is 3.5MgO0.5MgF2·GeO2:Mn, Zr3Y4O12:Eu with
The thickness of MFG mixing phosphorescent layers 6 is 5 μm.
In the present embodiment, signle crystal alumina temperature, pressure combined measurement probe is shaped as cylindric, signle crystal alumina temperature
Degree pressure combined measurement probe preparation method be：Oil processing is carried out with acetone, alcohol successively to signle crystal alumina first, so
Al of the particle diameter for 120 mesh is used afterwards2O3Particle carries out blasting treatment to signle crystal alumina, and it is (coarse to obtain uniform surface roughness
The scope of degree is 5 μm), then using plasma spraying method, by Zr3Y4O12:Eu is sprayed on monocrystalline oxidation with MFG mixed-powders
On aluminium.
Wherein, the condition of blasting treatment is：Blasting pressure is 0.5MPa.
Plasma spraying method carries out heating fusing or semi-molten by high-temperature plasma line to ceramic particle, then
Quickly it is sprayed into matrix surface and forms the coating with layer structure.Must be 4 times to substrate preheating before spraying.Design parameter
For：The temperature for controlling matrix is 200 DEG C, and the spacing of spray gun and matrix is 150mm, and spray gun translational speed is 300mm/s, and powder feeding is fast
It is 0.8L/min, spray voltage 110V, spraying current 220A to spend for 40g/min, powder feeding air-flow, and argon gas flow velocity is 60L/
Min, hydrogen flow rate 25L/min.
In the present embodiment, Zr3Y4O12:Euu powder diameters are 40 μm, are prepared using reverse coprecipitation.Preparing
Zr3Y4O12:During Eu powder, raw material is selected there are zirconium source (Zr (NO3)4·3H2O (herein x value be how many, please illustratively) or
Person ZrOCl2·8H2O), Y2O3, Eu2O3, nitric acid and ammoniacal liquor.
Reverse coprecipitation concretely comprises the following steps：
First by nitric acid under conditions of heating by Y2O3, Eu2O3Powder dissolves, and treats Y2O3, Eu2O3Powder is completely dissolved
Afterwards, improve heating-up temperature unnecessary nitric acid is decomposed and volatilized completely, then by Zr (NO3)4·xH2O or ZrOCl2·8H2O
Y (NO are poured into deionized water3)3With Eu (NO3)3Mixed solution in, magnetic agitation 24h causes each composition to fill in a liquid
Divide uniformly mixing, then mixed solution is poured slowly into dilute ammonia solution, it is dilute in order to ensure each cation while precipitate
The pH value control of ammoniacal liquor is 9, and filtering will be precipitated after standing 24h after precipitation completely, and using deionization hydrate alcohol cleaning 3-4
Time, 24h is then dried at 120 DEG C, 24h is finally calcined at 950 DEG C obtains phosphorescence powder.
By Zr3Y4O12:Eu and MFG mixing phosphor powders, mixed weight ratio are (Zr3Y4O12:Eu):(MFG)=2000:1,
2000 parts of Zr are weighed by mixed proportion 20003Y4O12:Eu and 1 part of MFG.The MFG weighed is put into isopropanol, isopropanol and MFG
Weight ratio be 1000:1. the Zr that will be weighed3Y4O12:Eu is put into MFG and suspension made of isopropanol, is stirred, and stirs
Process is untill isopropanol all volatilization.The Zr that will be mixed3Y4O12:Eu is dried with MFG mixing phosphor powders, dries temperature
250 DEG C of degree, time 2 h.
By the Zr of synthesis3Y4O12:Eu is granulated with MFG mixing phosphor powder by craft or spray drying process, is added PVA and is glued
Agent is tied, is dried, sieving, so as to obtain good fluidity, suitably carries out the powder of plasma spraying.
In the present embodiment, for temperature phosphorescence filter 9, using 620~670nm bandpass filter mirror；For pressure phosphorescence
Filter 10, using 550~600nm bandpass filter mirror.
Laser source wavelength is 405nm.The power of LASER Light Source is 15W.The resistance adjustment scope of resistance box is 1000 Ω.
In actual use, surface deposition there is into Zr3Y4O12:Eu mixes the signle crystal alumina other end of phosphorescent layer 6 with MFG
Polishing connection fiber coupler 5 simultaneously connects optical fiber 3, and optical fiber 3 is sequentially connected LASER Light Source 2 and signal projector 1 all the way, another
Road optical fiber 3 connect spectroscope 7, two-way light path is separated by spectroscope, respectively connect 620~670nm temperature phosphorescence filter 9 and
550~600nm pressure phosphorescence filter 10, all the way light be then sequentially connected temperature photomultiplier 11, temperature and resistance case 13 and
For gathering the oscillograph 15 of signal, another way light is sequentially connected pressure photoelectric multiplier tube 12, piezoresistive case 14 and for adopting
Collect the oscillograph 15 of signal.Wherein, the signal projector 1 of light source is also connected with oscillograph 15, can also be obtained from oscillograph 15
To light signal spectral line.The control LASER Light Source 2 of signal projector 1 launches the light-pulse generator of the specific frequency of needs.
In the operating condition, signal projector 1 controls LASER Light Source 2 to launch to the present embodiment temperature, pressure combined measurement system
Go out light-pulse generator, in the presence of light-pulse generator, the Zr on temperature, pressure probe 43Y4O12:Eu mixes phosphorescent layer 6 with MFG and sent
Phosphorescent signal, the phosphorescent signal mirror 7 that is split divide and pass through temperature phosphorescence filter 9 and pressure respectively for two-way, two-way phosphorescent signal
Phosphorescence filter 10, received respectively by respective photomultiplier, temperature and pressure phosphorescent signal are converted into electricity by photomultiplier
Stream signal is simultaneously sent to resistance box, and reconvert is shown on oscillograph 15 into voltage signal, obtains two smooth phosphorescence and declines
Subtract curve, attenuation curve is fitted using software, obtains temperature phosphorescent lifetime (MFG signals) and temperature, pressure phosphorescent lifetime
(Zr3Y4O12:Eu signals), the calibration curve for compareing MFG phosphorescent lifetimes and temperature obtains temperature value.Compare Zr3Y4O12:Eu phosphorescence
Life-span and the calibration curve of temperature, pressure, the temperature value measured with reference to MFG, obtain pressure value.
Based on Zr3Y4O12:Eu and the method for testing of the temperature, pressure combined measurement system of MFG phosphorescent lifetimes, this method tool
Body comprises the following steps：
(1) it is 5ms to control LASER Light Source to launch pulse width by signal projector, and the pulse period is 1000ms arteries and veins
Wash source off；
(2) in the presence of light-pulse generator, the Zr on temperature, pressure probe3Y4O12:Eu mixes phosphorescent layer with MFG and sends phosphorus
Optical signal, the phosphorescent signal are divided into two ways of optical signals by spectroscope
(3) this two ways of optical signals is filtered off respectively by phosphorescence filter, temperature with pressure phosphorescent signal
(4) temperature is each received with pressure phosphorescent signal by photomultiplier.
(5) temperature phosphorescent signal is converted into current signal and is sent to temperature and resistance case by temperature photomultiplier, and is led to
Current signal is converted to voltage signal by excess temperature resistance box, and voltage signal is amplified, and is shown on oscillograph, obtains temperature phosphorus
Optical attenuation curve, as shown in Figure 2 a；
(6) by utilizing attenuation equation to temperature phosphor-decay curve, temperature phosphorescent lifetime, τ=0.34245ms are obtained；
(7) temperature information is obtained according to the calibration curve of temperature phosphorescent lifetime and temperature relation, wherein calibration curve is as schemed
Shown in 2b, temperature is 500 DEG C.
(8) pressure phosphorescent signal is converted into current signal and is sent to piezoresistive case by pressure photoelectric multiplier tube, and is led to
Current signal is converted to voltage signal by excess pressure resistance box, and voltage signal is amplified, and is shown on oscillograph, obtains pressure phosphorus
Optical attenuation curve, as shown in Figure 3 a,
(9) by utilizing attenuation equation to pressure phosphor-decay curve, it is 180 μ s to obtain pressure phosphorescent lifetime；
(10) amendment of combination temperature information, from 500 DEG C of pressure phosphorescent lifetime and pressure relationship plot, according to pressure
The calibration curve of phosphorescent lifetime and pressure dependence, as shown in Figure 3 b, pressure information can be obtained, it may be determined that pressure is -20kpa.
The present embodiment temperature, pressure combined measurement system can be used for measurement aero-engine or ground gas turbine to be in work
Make the temperature under state.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, and difference is, the wavelength of laser ultraviolet source is 380nm, light source
Power is 3w.The resistance of resistance box 6 is set to 300 Ω.
Claims (10)
1. a kind of temperature, pressure combined measurement system, it is characterised in that the measuring system includes temperature, pressure probe and temperature pressure
Force probe connection fiber coupler, be connected by optical fiber with fiber coupler import LASER Light Source, by optical fiber and optical fiber
The spectroscope of coupler outlet connection and the signal processing unit for being arranged on spectroscope different light paths rear, the temperature, pressure
The surface coating Zr of probe3Y4O12:Eu mixes phosphorescent layer, the Zr with MFG3Y4O12:Eu is mixed in phosphorescent layer with MFG
Zr3Y4O12:Eu and MFG mass ratio is (800~2500)：1.
A kind of 2. temperature, pressure combined measurement system according to claim 1, it is characterised in that the Zr3Y4O12:In Eu
Include ZrO2、Y2O3And Eu2O3, wherein, Y2O3Molar fraction be 35%~45%, Eu2O3Molar fraction for 0.1%~
2%, the MFG chemical formula are 3.5MgO0.5MgF2·GeO2:Mn。
A kind of 3. temperature, pressure combined measurement system according to claim 2, it is characterised in that the Zr3Y4O12:Eu's
Particle diameter is 40~100 μm, and MFG particle diameter is 5~15 μm.
A kind of 4. temperature, pressure combined measurement system according to claim 1, it is characterised in that the Zr3Y4O12:Eu with
MFG mixing phosphorescent layer is coated in temperature, pressure detecting probe surface, the Zr by the method for plasma spraying3Y4O12:Eu mixes with MFG
The thickness for closing phosphorescent layer is 5~50 μm.
A kind of 5. temperature, pressure combined measurement system according to claim 1, it is characterised in that the temperature, pressure probe
Cylindrical or disc-shaped, the material of the temperature, pressure probe is signle crystal alumina.
6. a kind of temperature, pressure combined measurement system according to claim 1, it is characterised in that the spectroscope is in isosceles
Triangle, spectroscopical base are connected with optical fiber, and two through light splitting light path projects from a spectroscopical waist respectively, described
Signal processing unit includes processes temperature signal subelement and pressure signal processing subelement；
The processes temperature signal subelement includes speculum, temperature phosphorescence filter, the temperature photoelectricity being arranged in a light path
Multiplier tube, temperature and resistance case and oscillograph；
The pressure signal processing subelement includes speculum, pressure phosphorescence filter, the temperature light being arranged in another light path
Electric multiplier tube, piezoresistive case and oscillograph.
7. a kind of temperature, pressure combined measurement system according to claim 1, it is characterised in that the measuring system includes
One signal projector, the signal projector are connected with LASER Light Source.
8. a kind of method that temperature, pressure combined measurement is carried out using the measuring system as described in claim 1~7 is any, its feature
It is, including following steps：
(1) blasting treatment is carried out in temperature, pressure detecting probe surface, then by Zr by the way of plasma spraying3Y4O12:Eu with
MFG mixing phosphorescent layer is coated in temperature, pressure detecting probe surface；
(2) each part is assembled in order, forms measuring system；
(3) control LASER Light Source to project light-pulse generator, temperature phosphor-decay curve and pressure phosphor-decay are obtained in oscillograph
Curve, then temperature phosphor-decay curve utilizes attenuation equation and pressure phosphor-decay curve utilizes attenuation equation, obtains temperature
Phosphorescent lifetime and pressure phosphorescent lifetime, so as to obtain temperature information and pressure information.
9. a kind of temperature, pressure union measuring method according to claim 8, it is characterised in that the pressure of the sandblasting is
0.1~0.7MPa, shot blasting particles are the Al that particle diameter is 16~120 mesh2O3Particle；
It is 200~600 DEG C that the plasma spraying, which controls the temperature of matrix, and the spacing of spray gun and matrix is 90~250mm, spray gun
Translational speed is 300~1000mm/s, and powder feed rate is 10~70g/min, and powder feeding air-flow is 0.5~1.2L/min, spraying electricity
It is 200~250A to press as 100~180V, spraying current, and argon gas flow velocity is 40~120L/min, and hydrogen flow rate is 15~45L/
min。
10. a kind of temperature, pressure union measuring method according to claim 8, it is characterised in that the light-pulse generator
Width is 1~5ms, and the pulse period is 10~1000ms.
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