CN109163810A - High-temperature rotor radiation temperature measurement device and method - Google Patents
High-temperature rotor radiation temperature measurement device and method Download PDFInfo
- Publication number
- CN109163810A CN109163810A CN201811196874.3A CN201811196874A CN109163810A CN 109163810 A CN109163810 A CN 109163810A CN 201811196874 A CN201811196874 A CN 201811196874A CN 109163810 A CN109163810 A CN 109163810A
- Authority
- CN
- China
- Prior art keywords
- rotor
- band
- temperature
- narrow
- imaging system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 89
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001931 thermography Methods 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims abstract description 4
- 230000003595 spectral effect Effects 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 7
- 230000000873 masking effect Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000011056 performance test Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J2005/0033—Wheel
Abstract
The present invention relates to a kind of high-temperature rotor radiation temperature measurement device and methods, the temperature measuring equipment includes closed equipment compartment and heating furnace, further include: medium wave thermal imaging system, shutter and transmission mechanism, heating furnace is arranged in equipment compartment, rotor is arranged in heating furnace, through-hole is set on the furnace wall of heating furnace, shutter is allow to pass in and out heating furnace under the drive of transmission mechanism；Shutter is internal cavity structure, and shutter is in heating furnace between the first order rotor end-face of rotor and the furnace wall, and there are gaps between first order rotor end-face and furnace wall；Medium wave thermal imaging system is fixed in equipment compartment, and the detector probe of medium wave thermal imaging system is aligned with the internal cavity of shutter；Waveband selection optical filter is installed between the detector and imaging lens of medium wave thermal imaging system.The present invention is on the basis of two waveband thermometric, it can be achieved that temperature field precise measurement during engine rotor performance test.
Description
Technical field
The present invention relates to contact-free measurement of temperature technical field more particularly to a kind of high-temperature rotor radiation temperature measurement device and sides
Method.
Background technique
It in engine rotor performance test, needs to obtain the temperature of rotor under hot environment, is commented for rotor thermal fatigue test
Estimate and authentic data support is provided.
Currently, having contact and contactless two kinds of temp measuring methods.Engine high-speed rotating under hot environment is turned
Son, severe working environment limit the use of contact temperature-measuring sensor.And contactless temperature-measuring is radiated, it is rung due to having
Should be fast, the service life is long, non-contact the advantages that, the defect of contact temperature-measuring is compensated for well.
Existing contactless temperature-measuring is the infrared detector using a certain selected wave band, to the infrared spoke of target surface
It penetrates characteristic and carries out data acquisition, radiation calibration then is carried out to the infrared detector, obtains the quantitative radiation data of target,
Transmitting rate score and propagation in atmosphere corrected parameter in conjunction with target etc. carry out inverting, obtain the true temperature of target.This side
Method only after accurate measurement obtains the transmitting rate score of target, just can be carried out exact inversion and obtain temperature data.However, in reality
In the engineer application of border, the emissivity of target is less susceptible to accurately obtain under hot environment.Firstly, high temperature emissive rate test equipment is stupid
Weight, testing process is complicated, and tests and can only carry out in laboratory；Secondly, the test result in laboratory is in many cases very
The truth of hardly possible characterization material at the scene；Particularly with the performance test of engine high-temperature rotor, since rotor is in heating furnace
Inner surface will receive the effects of oil pollution, oxidation and dust pollution, and the infrared emittance of rotor surface can occur significantly to become
Change, at this point, rotor surface emissivity is equivalent to a unknown quantity, the true temperature of rotor can not be obtained using inversion method above
Degree.
It, can also be due to where engine rotor meanwhile when carrying out thermometric to rotor using existing contactless temperature-measuring equipment
Reflection/scattering high temperature furnace in environmental radiation measurement result is impacted, generate very big error.In this case, it surveys
The energy that warm equipment receives be rotor itself with scattering environments radiation be coupled as a result, and only obtaining rotor itself
Radiation is only the useful physical quantity of inverting true temperature.Therefore, existing radiative thermometric method needs to effectively remove ambient enviroment
Radiation, can just be finally inversed by accurate temperature data.And this process is difficult accurately to realize.
Therefore, against the above deficiency, need to obtain rotor surface true temperature using a kind of new thermometric thinking, thus
Effective evading target spectral emissivity cannot accurately obtain bring influence, realize the precise measurement of temperature of rotor.
Summary of the invention
The technical problem to be solved in the present invention is that in existing high-temperature rotor radiation temperature measurement, due to can not accurately obtain
Rotor surface emissivity, and measure radiation energy also by Effect on Environment Radiation, so that it is really warm to obtain rotor
The defect of degree provides a kind of high-temperature rotor radiation temperature measurement device and method.
In order to solve the above-mentioned technical problems, the present invention provides a kind of high-temperature rotor radiation temperature measurement devices, including closed
Equipment compartment and heating furnace, further includes: medium wave thermal imaging system, shutter and transmission mechanism,
Heating furnace is arranged in equipment compartment, and rotor is arranged in heating furnace, and through-hole is arranged on the furnace wall of heating furnace, makes to cover
Device can pass in and out heating furnace under the drive of transmission mechanism；Shutter is internal cavity structure, and shutter is in heating furnace to be turned
Between the first order rotor end-face and the furnace wall of son, and there are gaps between first order rotor end-face and furnace wall；Medium wave heat
As instrument is fixed in equipment compartment, the detector probe of medium wave thermal imaging system is aligned with the internal cavity of shutter；The spy of medium wave thermal imaging system
It surveys and waveband selection optical filter is installed between device and imaging lens.
In high-temperature rotor radiation temperature measurement device according to the present invention, the medium wave thermal imaging system is arranged in antifreezing protection
In cabin, exploration hole is arranged in the position that antifreezing protection cabin corresponds to the detector probe.
In high-temperature rotor radiation temperature measurement device according to the present invention, the antifreezing protection cabin has water-cooling sandwich,
Water-cooling sandwich connects circularly cooling water tank by water cooled pipeline.
In high-temperature rotor radiation temperature measurement device according to the present invention, the medium wave thermal imaging system is refrigeration mode medium wave heat
As instrument.
In high-temperature rotor radiation temperature measurement device according to the present invention, the medium wave thermal imaging system is fixed by the bracket
On the track of equipment compartment.
In high-temperature rotor radiation temperature measurement device according to the present invention, the shutter has additional interlayer, adds
Interlayer connects circularly cooling water tank by additional water cooled pipeline.
In high-temperature rotor radiation temperature measurement device according to the present invention, described device further includes data processing unit,
Radiation energy data for obtaining to medium wave thermal imaging system are handled, and obtain temperature of rotor.
In high-temperature rotor radiation temperature measurement device according to the present invention, described device further includes control unit, is used for
Transmission control is carried out to transmission mechanism, shutter is made periodically to pass in and out heating furnace；And for corresponding control medium wave thermal imaging system
Data acquiring frequency.
The present invention also provides a kind of high-temperature rotor radiative thermometric method based on the high-temperature rotor radiation temperature measurement device,
Include:
The period of motion for setting shutter controls transmission mechanism by described control unit, makes shutter according to the fortune
The dynamic period passes in and out heating furnace；
It is corresponding to control medium wave thermal imaging system by described control unit for the primary selection narrow-band of selected waveband selection optical filter
Data acquisition is carried out to high-speed rotating rotor end-face in the period of motion；
The second selecting narrow-band for selecting waveband selection optical filter again controls medium wave thermal imaging system pair by described control unit
The period of motion described in Ying Yu carries out data acquisition to high-speed rotating rotor end-face；
The longest wavelength of the primary selection narrow-band and second selecting narrow-band is identical as minimal wave length difference range；Institute
The longest wavelength and minimal wave length difference for stating primary selection narrow-band are at most 0.5 μm；The longest of the primary selection narrow-band
The difference range of the minimal wave length of wavelength and second selecting narrow-band is between 0.3 μm -1.5 μm；
It is handled using the data that data processing unit acquires medium wave thermal imaging system, it is narrow by corresponding respectively to once select
The rotor radiation energy that wave band and second selecting narrow-band obtain, which calculates, obtains radiation energy ratio, further calculates and obtains rotor
Temperature.
In high-temperature rotor radiative thermometric method according to the present invention,
What the data that the data processing unit acquires medium wave thermal imaging system were handled method particularly includes:
Data processing unit handles the data of acquisition, obtains the rotor radiation energy for corresponding to primary selection narrow-band
Amount isRadiation energy corresponding to second selecting narrow-band is
The then radiation energy ratio R of the two are as follows:
The primary selection narrow-band λ of setting1Corresponding to wave-length coverage (a, b), second selecting narrow-band λ2Corresponding to wave-length coverage
(c, d) then has:
ε in formula1Indicate rotor one-time surface spectral emissivity, ε2Indicate the secondary surface spectral emissivity of rotor, T indicates to turn
Sub- temperature, c1Indicate first radiation constant, c2Indicate first radiation constant；A is the lower wavelength value of primary selection narrow-band, and b is
The upper limit wavelength value of primary selection narrow-band；C is the lower wavelength value of second selecting narrow-band, and d is second selecting narrow-band
Upper limit wavelength value；
In selected primary selection narrow-band and second selecting narrow-band, rotor one-time surface spectral emissions are set
Rate ε1With the secondary surface spectral emissivity ε of rotor2Identical, then radiation energy ratio R is deformed are as follows:
It is calculated using the formula of radiation energy ratio R, obtains temperature of rotor T.
Implement high-temperature rotor radiation temperature measurement device and method of the invention, has the advantages that the present invention to understand
Certainly target surface spectral emissivity is not easy the problem of accurately obtaining, and waveband selection optical filter is used in medium wave thermal imaging system, surveys
During temperature, obtain corresponding radiation energy after two wave bands being selected respectively, according to the radiation energy ratio measured twice into
Row calculates, and can derive the true temperature for obtaining primary rotor end face；The present invention is effectively evaded in a manner of two waveband thermometric
Rotor surface spectral emissivity bring influences.The present invention is in the measurement process of radiation energy simultaneously, environment spoke in order to prevent
It penetrates and is coupled bring added influence with rotor own radiation, block ambient enviroment provided with shutter, make medium wave thermal imaging system
During obtaining data, the ambient temperature effect being subject to is small, to further decrease measurement error.The present invention is according to double wave
The infrared signature of section temperature-measurement principle and high-temperature electric machine rotor, reasonably selects wave band when measuring twice, Ke Yi great
Big reduction rotor surface spectral emissivity, which changes, gives temperature measurement result bring error, to improve temperature measurement accuracy.
Detailed description of the invention
Fig. 1 is the illustrative diagram of high-temperature rotor radiation temperature measurement device according to the present invention；
Fig. 2 is that medium wave thermal imaging system is arranged in antifreezing protection cabin, and antifreezing protection cabin passes through the example that bracket is connect with track
Property schematic diagram；
Fig. 3 is the illustrative diagram that antifreezing protection cabin is connect with water cooled pipeline；
Fig. 4 is the control process illustrative diagram of high-temperature rotor radiative thermometric method according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Specific embodiment one, the first aspect of the present invention provide a kind of high-temperature rotor radiation temperature measurement device, in conjunction with figure
Shown in 1, including closed equipment compartment 1 and heating furnace 2, further includes: medium wave thermal imaging system 4, shutter 5 and transmission mechanism 6,
Heating furnace 2 is arranged in equipment compartment 1, and rotor 3 is arranged in heating furnace 2, and through-hole is arranged on the furnace wall of heating furnace 2,
Shutter 5 is set to pass in and out heating furnace 2 under the drive of transmission mechanism 6；Shutter 5 is internal cavity structure, and shutter 5 is heating
Between first order rotor end-face and the furnace wall in furnace 2 in rotor 3, and exist between first order rotor end-face and furnace wall
Gap；Medium wave thermal imaging system 4 is fixed in equipment compartment 1, and the detector probe of medium wave thermal imaging system 4 is aligned with the internal cavity of shutter 5；
Waveband selection optical filter is installed between the detector and imaging lens of medium wave thermal imaging system 4.
Present embodiment described device is used to acquire the temperature of first order rotor end-face in heating furnace 2, due to temperature data
It cannot directly obtain, therefore after acquiring by medium wave thermal imaging system 4 radiation energy of first order rotor end-face, then calculate acquisition rotor
Surface temperature.Heating furnace 2 is internally provided with heating wire 2-1, is heated at high temperature by heating wire 2-1 to rotor 3.
The transmission mechanism 6 can be any driving structure that shutter 5 can be driven to move back and forth, such as can be using electricity
Machine realizes reciprocal driving.
The waveband selection optical filter is the key component that double wave segment data can be obtained in the disclosure, can pass through rotating filtering
The mode conversion optical filter of piece wheel realizes the selection of wave band.Selection to optical filter wave band needs the practical temperature in conjunction with rotor
Degree range and its radiation peak wave band are reasonably selected, such as: it is special when the operating temperature of rotor is 600 DEG C -800 DEG C
Property be radiation peak within the scope of 3 μm of -5 mu m waveband of medium wave, therefore when selecting the wave band of optical filter, pay the utmost attention in 3 μm of medium wave -
It is chosen in the range of 5 μm, available higher signal-to-noise ratio；In this wave band, according still further to primary selection narrow-band and secondary choosing
The selection principle for selecting narrow-band is selected.
The selection principle of primary the selection narrow-band and second selecting narrow-band are as follows: the primary selection narrow-band and two
The longest wavelength of secondary selection narrow-band is identical as minimal wave length difference range；It is described it is primary selection narrow-band longest wavelength with most
Short wavelength's difference is at most 0.5 μm；The longest wavelength of the primary selection narrow-band and the minimal wave length of second selecting narrow-band
Difference range between 0.3 μm -1.5 μm.
Since equipment compartment 1 can set for hot environment in order to guarantee the accurate measurement of medium wave thermal imaging system 4 in equipment compartment 1
Black matrix is set, before every use, medium wave thermal imaging system 4 is calibrated.
Shutter 5 be used as environmental radiation control piece, enter heating furnace 2 after will the radiation to ambient enviroment effectively hidden
Gear will be as far as possible close to rotor end-face under the premise of not influencing the operating of other mechanisms, but cannot contact with rotor end-face, with
Influence from arriving rotor end-face high temperature.
Further combined with shown in Fig. 2,100 DEG C of temperature are in the equipment compartment 1 that works due to medium wave thermal imaging system 4, low pressure
The case where 100Pa, needs to carry out special protection to medium wave thermal imaging system 4, for example, can to guarantee that thermal imaging system can work normally
Being arranged the medium wave thermal imaging system 4 in antifreezing protection cabin 8, antifreezing protection cabin 8 corresponds to the position of the detector probe
Exploration hole is set.It uses antifreezing protection cabin 8 to provide a reliable working environment for medium wave thermal imaging system 4, test result can be improved
Accuracy.
Further, as shown in connection with fig. 3, realize that the specific method of low temperature environment in antifreezing protection cabin 8 may is that
Water-cooling sandwich is set on the side wall of the antifreezing protection cabin, then water-cooling sandwich is passed through into the connection circulation of water cooled pipeline 11
Refrigeration water tank.Circularly cooling water tank may be at outside equipment compartment 1, provide refrigeration water source for water-cooling sandwich.
It is mutually arranged side by side with use 8 mode of antifreezing protection cabin, it is also an option that medium wave thermal imaging system 4 is refrigeration mode medium wave thermal imaging system,
Then guarantee steady operation in a high temperauture environment using the refrigerating function of its own.
As an example, as shown in connection with fig. 2, the medium wave thermal imaging system 4 can be fixed on the track of equipment compartment 1 by bracket 9
On 10.Medium wave thermal imaging system 4 is fixed position of sound production in equipment compartment 1, and detector probe needs to be isolated by 5 inner cavity of shutter
Noiseless environment out acquires rotor end-face data, as long as fixed form and position can satisfy the position with shutter 5
Just corresponding.
As an example, as shown in connection with fig. 3, to avoid introducing new radiation interference into heating furnace 2, shutter 5 needs to protect
Relatively low temperature is held to enter.Shutter 5 can be designed using water cooling, for example, being arranged on the side wall of shutter 5 additional
Interlayer adds interlayer by additional water cooled pipeline and connects circularly cooling water tank, to form one with extraneous circularly cooling water tank
A circulating cooling channel.Shutter 5 can use identical refrigeration principle with antifreezing protection cabin 8, for example, the two can lead to respectively
It crosses pipeline to connect with extraneous circularly cooling water tank, realizes synchronous refrigeration.The water cooling design of shutter 5 is also possible to add in inside
Work sink connect sink with circularly cooling water tank by hose.
As an example, shutter 5 can be made of copper alloy.
As an example, as shown in connection with fig. 4, since the direct measurement data of the radiation temperature measurement device in the disclosure is rotor-end
The radiation energy in face, this is not the temperature data finally to be obtained, it is therefore desirable to subsequent processing is carried out to data, to be turned
Sub- temperature.Such as data processing unit can be used, the radiation energy data for obtaining to medium wave thermal imaging system 4 are handled,
Obtain temperature of rotor.The data processing unit can be embedded in computer, as shown in Figure 1, data processing unit passes through number
The data that medium wave thermal imaging system 4 exports are received according to transmission line, are then handled.Each component in data line and equipment compartment 1
Power supply line can be passed by by the realization of flange 7 being arranged on 1 bulkhead of equipment compartment and be passed through from inside to outside by equipment compartment 1.
As an example, as shown in connection with fig. 4, described device further includes control unit, for carrying out transmission control to transmission mechanism 6
System makes the periodically disengaging heating furnace 2 of shutter 5；And the data acquiring frequency for corresponding control medium wave thermal imaging system 4.
Data processing unit is as follows to the treatment process of data:
Firstly, can calculate target in conjunction with planck formula in temperature and be T, radiation energy M when wavelength is λλ:
ε is target surface spectral emissivity, c in formula1It is first radiation constant, c2It is second radiation constant；
If choosing two different wave lengths, the corresponding radiation energy ratio mathematic(al) representation of two wavelength are as follows:
In practical situations, due to spectrum continuity, the infrared light of single wavelength is unable to get selecting optical filter,
Therefore narrow-band filter is selected, the radiation energy in wave band as narrow as possible is made to reach medium wave thermal imaging system 4.Using energy integral
Theory calculates narrow-band (a, b), (c, d) interior overall radiation energy, at this time energy ratio mathematic(al) representation are as follows:
In the present invention, due to two wave bands (a, b) of selection, (c, d) is very close to, it is believed that two narrow-band differences
Average surface spectral emissivity in Δ λ is almost the same, and atmospheric attenuation is essentially identical, will not influence radiation energy ratio, i.e., this
When can consider ε1(λ1, T) and=ε2(λ2, T), and then it is as follows to obtain energy ratio expression formula:
By the functional relation of radiation energy ratio R and temperature of rotor T, temperature of rotor T can be obtained using above formula derivation.
After carrying out data test to rotor end-face corresponding position using temperature measuring equipment described in the disclosure, by data processing
And temperature retrieval, the radial temperature profile of first order rotor end-face can be obtained, can be engine rotor thermal fatigue test process
Reliable temperature data support is provided.
Specific embodiment two, as shown in connection with fig. 4, another aspect of the present invention additionally provides a kind of to be turned based on the high temperature
The high-temperature rotor radiative thermometric method of sub- radiation temperature measurement device, comprising:
The period of motion for setting shutter 5 controls transmission mechanism 6 by described control unit, makes shutter 5 according to described
The period of motion passes in and out heating furnace 2；
It is right to control medium wave thermal imaging system 4 by described control unit for the primary selection narrow-band of selected waveband selection optical filter
The period of motion described in Ying Yu carries out data acquisition to high-speed rotating rotor end-face；
The second selecting narrow-band for selecting waveband selection optical filter again controls medium wave thermal imaging system 4 by described control unit
Data acquisition is carried out to high-speed rotating rotor end-face corresponding to the period of motion；
The selection principle of primary the selection narrow-band and second selecting narrow-band are as follows: the primary selection narrow-band and two
The longest wavelength of secondary selection narrow-band is identical as minimal wave length difference range；It is described it is primary selection narrow-band longest wavelength with most
Short wavelength's difference is at most 0.5 μm；The longest wavelength of the primary selection narrow-band and the minimal wave length of second selecting narrow-band
Difference range between 0.3 μm -1.5 μm；
For example: assuming that characteristic is radiation peak in 3 μm of medium wave-when the operating temperature of rotor is 600 DEG C -800 DEG C
Within the scope of 5 mu m wavebands, then once narrow-band is selected to can choose is 3-3.5 μm, and second selecting narrow-band can choose as 4-4.5
μm, once selecting the longest wavelength of narrow-band and the minimal wave length difference of second selecting narrow-band is 0.5 μm.
It is handled using the data that data processing unit acquires medium wave thermal imaging system 4, is once selected by corresponding respectively to
The rotor radiation energy that narrow-band and second selecting narrow-band obtain, which calculates, obtains radiation energy ratio, further calculates and is turned
Sub- temperature.
Present embodiment in actual use, due to spectrum continuity, is unable to get list selecting optical filter
The infrared light of one wavelength, therefore select narrow-band filter.It is primary to select narrow-band and secondary choosing for subsequent calculating requirement
The wave-length coverage for selecting narrow-band will be relatively close to just can guarantee the accuracy that will not influence calculating process.
The shutter 5 periodically disengaging heating furnace 2, realizes and blocks to the compartment of environmental radiation in equipment compartment 1,
And when realizing the modulation, the i.e. entrance of shutter 5 heating furnace 2 to rotor radiation signal, medium wave thermal imaging system 4 obtains effective test
Signal, when shutter 5 removes heating furnace 2, the signal that medium wave thermal imaging system 4 obtains contains environmental radiation signal, carries out at data
It can be screened according to the period of motion when reason.
Present embodiment needs test result at least twice, primary that the corresponding medium wave thermal imaging system 4 of narrow-band is selected to acquire number
Data are acquired according to medium wave thermal imaging system 4 corresponding with second selecting narrow-band, calculating is just can be carried out, finally obtains temperature of rotor.
Further, as an example, the tool that the data that the data processing unit acquires medium wave thermal imaging system 4 are handled
Body method are as follows:
Data processing unit handles the data of acquisition, obtains the rotor radiation energy for corresponding to primary selection narrow-band
Amount isRadiation energy corresponding to second selecting narrow-band is
The then radiation energy ratio R of the two are as follows:
The primary selection narrow-band λ of setting1Corresponding to wave-length coverage (a, b), second selecting narrow-band λ2Corresponding to wave-length coverage
(c, d) then has:
ε in formula1Indicate rotor one-time surface spectral emissivity, ε2Indicate the secondary surface spectral emissivity of rotor, T indicates to turn
Sub- temperature, c1Indicate first radiation constant, c2Indicate first radiation constant；A is the lower wavelength value of primary selection narrow-band, and b is
The upper limit wavelength value of primary selection narrow-band；C is the lower wavelength value of second selecting narrow-band, and d is second selecting narrow-band
Upper limit wavelength value；
In selected primary selection narrow-band and second selecting narrow-band, due to two wave bands of selection lean on it is non-
Average surface spectral emissivity in Chang Jin, narrow-band Δ λ is almost the same, and atmospheric attenuation is essentially identical, will not influence ratio, can
To think rotor one-time surface spectral emissivity ε at this time1With the secondary surface spectral emissivity ε of rotor2It is identical, then radiation energy ratio R
Deformation are as follows:
Radiation energy ratio R is obtained by the radiation energy data that medium wave thermal imaging system 4 acquires, then is calculated using above formula, is obtained
Obtain temperature of rotor T.
In conclusion the present invention on the basis of two waveband thermometric, solves environment radiating scattering in conventional radiation thermometric
The problem of influencing temperature measurement accuracy, it can be achieved that temperature field precise measurement during engine rotor performance test, tries for heat fatigue
It tests assessment and reliable temperature data supporting is provided.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of high-temperature rotor radiation temperature measurement device, including closed equipment compartment (1) and heating furnace (2), it is characterised in that also wrap
It includes: medium wave thermal imaging system (4), shutter (5) and transmission mechanism (6),
In equipment compartment (1), rotor (3) setting is arranged on the furnace wall of heating furnace (2) in heating furnace (2) for heating furnace (2) setting
Through-hole, make shutter (5) can under the drive of transmission mechanism (6) disengaging heating furnace (2)；Shutter (5) is internal cavity structure,
Shutter (5) turns between the first order rotor end-face and the furnace wall in heating furnace (2) in rotor (3), and with the first order
There are gaps between sub- end face and furnace wall；Medium wave thermal imaging system (4) is fixed in equipment compartment (1), the detector of medium wave thermal imaging system (4)
Probe is aligned with the internal cavity of shutter (5)；Waveband selection filter is installed between the detector and imaging lens of medium wave thermal imaging system (4)
Mating plate.
2. high-temperature rotor radiation temperature measurement device according to claim 1, it is characterised in that:
In antifreezing protection cabin (8), antifreezing protection cabin (8) correspond to the detector probe for medium wave thermal imaging system (4) setting
Position be arranged exploration hole.
3. high-temperature rotor radiation temperature measurement device according to claim 2, it is characterised in that: the antifreezing protection cabin has water
Cold interlayer, water-cooling sandwich connect circularly cooling water tank by water cooled pipeline (11).
4. high-temperature rotor radiation temperature measurement device according to claim 1, it is characterised in that:
The medium wave thermal imaging system (4) is refrigeration mode medium wave thermal imaging system.
5. high-temperature rotor radiation temperature measurement device according to any one of claim 1 to 4, it is characterised in that: the medium wave
Thermal imaging system (4) is fixed on the track (10) of equipment compartment (1) by bracket (9).
6. high-temperature rotor radiation temperature measurement device according to any one of claim 1 to 5, it is characterised in that: the masking
Device (5) has additional interlayer, adds interlayer by additional water cooled pipeline and connects circularly cooling water tank.
7. high-temperature rotor radiation temperature measurement device according to any one of claim 1 to 6, it is characterised in that: described device
It further include data processing unit, the radiation energy data for obtaining to medium wave thermal imaging system (4) are handled, and obtain rotor temperature
Degree.
8. high-temperature rotor radiation temperature measurement device according to claim 7, it is characterised in that: described device further includes that control is single
Member makes shutter (5) periodically pass in and out heating furnace (2) for carrying out transmission control to transmission mechanism (6)；And for pair
The data acquiring frequency of medium wave thermal imaging system (4) should be controlled.
9. a kind of high-temperature rotor radiative thermometric method for being wanted the 8 high-temperature rotor radiation temperature measurement devices based on right, feature are existed
In including:
The period of motion for setting shutter (5) controls transmission mechanism (6) by described control unit, makes shutter (5) according to institute
State period of motion disengaging heating furnace (2)；
The primary selection narrow-band of selected waveband selection optical filter, it is corresponding by described control unit control medium wave thermal imaging system (4)
Data acquisition is carried out to high-speed rotating rotor end-face in the period of motion；
The second selecting narrow-band of waveband selection optical filter is selected again, it is right by described control unit control medium wave thermal imaging system (4)
The period of motion described in Ying Yu carries out data acquisition to high-speed rotating rotor end-face；
The longest wavelength of the primary selection narrow-band and second selecting narrow-band is identical as minimal wave length difference range；Described one
The longest wavelength and minimal wave length difference of secondary selection narrow-band are at most 0.5 μm；The longest wavelength of the primary selection narrow-band
Difference range with the minimal wave length of second selecting narrow-band is between 0.3 μm -1.5 μm；
It is handled using the data that data processing unit acquires medium wave thermal imaging system (4), it is narrow by corresponding respectively to once select
The rotor radiation energy that wave band and second selecting narrow-band obtain, which calculates, obtains radiation energy ratio, further calculates and obtains rotor
Temperature.
10. according to right want 9 described in high-temperature rotor radiative thermometric method, it is characterised in that:
What the data that the data processing unit acquires medium wave thermal imaging system (4) were handled method particularly includes:
Data processing unit handles the data of acquisition, obtain correspond to once select the rotor radiation energy of narrow-band forRadiation energy corresponding to second selecting narrow-band is
The then radiation energy ratio R of the two are as follows:
The primary selection narrow-band λ of setting1Corresponding to wave-length coverage (a, b), second selecting narrow-band λ2Corresponding to wave-length coverage (c,
D), then have:
ε in formula1Indicate rotor one-time surface spectral emissivity, ε2Indicate the secondary surface spectral emissivity of rotor, T indicates rotor temperature
Degree, c1Indicate first radiation constant, c2Indicate first radiation constant；A is the lower wavelength value of primary selection narrow-band, and b is primary
Select the upper limit wavelength value of narrow-band；C is the lower wavelength value of second selecting narrow-band, and d is the upper limit of second selecting narrow-band
Wavelength value；
In selected primary selection narrow-band and second selecting narrow-band, rotor one-time surface spectral emissivity ε is set1
With the secondary surface spectral emissivity ε of rotor2Identical, then radiation energy ratio R is deformed are as follows:
It is calculated using the formula of radiation energy ratio R, obtains temperature of rotor T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196874.3A CN109163810B (en) | 2018-10-15 | 2018-10-15 | High-temperature rotor radiation temperature measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196874.3A CN109163810B (en) | 2018-10-15 | 2018-10-15 | High-temperature rotor radiation temperature measuring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163810A true CN109163810A (en) | 2019-01-08 |
| CN109163810B CN109163810B (en) | 2020-06-09 |
Family
ID=64878016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196874.3A Active CN109163810B (en) | 2018-10-15 | 2018-10-15 | High-temperature rotor radiation temperature measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163810B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629665A (en) * | 2020-11-27 | 2021-04-09 | 烟台艾睿光电科技有限公司 | Signal processing method and device for infrared temperature measurement and electronic equipment |
| CN113686450A (en) * | 2021-09-03 | 2021-11-23 | 安徽淮光智能科技有限公司 | High-temperature target surface temperature measuring instrument convenient for temperature inspection in furnace |
| CN114320989A (en) * | 2021-12-31 | 2022-04-12 | 北京中科科仪股份有限公司 | Molecular pump temperature measuring device, temperature measuring method and temperature measuring device of running part |
| CN114323098A (en) * | 2021-12-21 | 2022-04-12 | 北京科技大学 | Space protection cabin detection system and detection method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076707A (en) * | 1989-05-04 | 1991-12-31 | Deutshe Forschungsanstalt Fur Luft-Und Raumfahrt E.V. | Device for radiation temperature measurement of molten masses in a vacuum |
| JPH09250439A (en) * | 1996-03-14 | 1997-09-22 | Toshiba Eng Co Ltd | Temperature monitor of water turbine runner synchronizer |
| US7315369B2 (en) * | 2004-01-14 | 2008-01-01 | Chevron Phillips Chemical Company, Lp | Method and apparatus for monitoring polyolefin production |
| CN101517872A (en) * | 2006-10-05 | 2009-08-26 | 东芝三菱电机产业系统株式会社 | Device and method for monitoring rotating motor |
| CN102322960A (en) * | 2011-08-11 | 2012-01-18 | 刘建松 | A kind of infrared thermometry device and set up the method in coal-burning boiler temperature field |
| JP2013160627A (en) * | 2012-02-03 | 2013-08-19 | Nippon Steel & Sumitomo Metal | Blast furnace tapping temperature measuring method, blast furnace tapping temperature measuring system, computer program, and computer readable memory medium |
| CN103759839A (en) * | 2014-01-14 | 2014-04-30 | 中国农业大学 | Measuring device and method for surface temperature parameters of far infrared blade |
| CN104797918A (en) * | 2012-08-23 | 2015-07-22 | 西门子能量股份有限公司 | System and method for on-line optical monitoring within a gas turbine combustor section |
| CN107203036A (en) * | 2016-03-17 | 2017-09-26 | 通用电气公司 | Optical imaging system for gas-turbine unit |
| CN107328478A (en) * | 2017-06-16 | 2017-11-07 | 电子科技大学 | A kind of method that photo measure Turbine Blade Temperature Field and emissivity are radiated based on three wave bands |
| WO2018096369A2 (en) * | 2016-11-28 | 2018-05-31 | Cambridge Sensor Innovation Limited | Oven, method of controlling oven, and sensors |
-
2018
- 2018-10-15 CN CN201811196874.3A patent/CN109163810B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076707A (en) * | 1989-05-04 | 1991-12-31 | Deutshe Forschungsanstalt Fur Luft-Und Raumfahrt E.V. | Device for radiation temperature measurement of molten masses in a vacuum |
| JPH09250439A (en) * | 1996-03-14 | 1997-09-22 | Toshiba Eng Co Ltd | Temperature monitor of water turbine runner synchronizer |
| US7315369B2 (en) * | 2004-01-14 | 2008-01-01 | Chevron Phillips Chemical Company, Lp | Method and apparatus for monitoring polyolefin production |
| CN101517872A (en) * | 2006-10-05 | 2009-08-26 | 东芝三菱电机产业系统株式会社 | Device and method for monitoring rotating motor |
| CN102322960A (en) * | 2011-08-11 | 2012-01-18 | 刘建松 | A kind of infrared thermometry device and set up the method in coal-burning boiler temperature field |
| JP2013160627A (en) * | 2012-02-03 | 2013-08-19 | Nippon Steel & Sumitomo Metal | Blast furnace tapping temperature measuring method, blast furnace tapping temperature measuring system, computer program, and computer readable memory medium |
| CN104797918A (en) * | 2012-08-23 | 2015-07-22 | 西门子能量股份有限公司 | System and method for on-line optical monitoring within a gas turbine combustor section |
| CN103759839A (en) * | 2014-01-14 | 2014-04-30 | 中国农业大学 | Measuring device and method for surface temperature parameters of far infrared blade |
| CN107203036A (en) * | 2016-03-17 | 2017-09-26 | 通用电气公司 | Optical imaging system for gas-turbine unit |
| WO2018096369A2 (en) * | 2016-11-28 | 2018-05-31 | Cambridge Sensor Innovation Limited | Oven, method of controlling oven, and sensors |
| CN107328478A (en) * | 2017-06-16 | 2017-11-07 | 电子科技大学 | A kind of method that photo measure Turbine Blade Temperature Field and emissivity are radiated based on three wave bands |
Non-Patent Citations (5)
| Title |
|---|
| I. A. IVANOV 等: ""Terbium garnets for high average power Faraday isolators: Influence of composition, doping and high temperature annealing to the losses in the near-IR range"", 《CLEO》 * |
| 刘先富 等: ""基于红外辐射的涡轮转子叶片前缘温度场测量"", 《燃气涡轮试验与研究》 * |
| 张朝晖: "《检测技术及应用》", 30 November 2011 * |
| 张磊 等: "" 非接触式水轮发电机转子磁极温度动态监测系统"", 《仪表技术与传感器》 * |
| 赵韶亭 等: "" 红外测温技术在大型直流电机转子温度监测中的研究与应用"", 《科技经济导刊》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629665A (en) * | 2020-11-27 | 2021-04-09 | 烟台艾睿光电科技有限公司 | Signal processing method and device for infrared temperature measurement and electronic equipment |
| CN112629665B (en) * | 2020-11-27 | 2022-03-22 | 烟台艾睿光电科技有限公司 | Signal processing method and device for infrared temperature measurement and electronic equipment |
| CN113686450A (en) * | 2021-09-03 | 2021-11-23 | 安徽淮光智能科技有限公司 | High-temperature target surface temperature measuring instrument convenient for temperature inspection in furnace |
| CN113686450B (en) * | 2021-09-03 | 2023-08-01 | 合肥师范学院 | High-temperature target surface temperature measuring instrument convenient for temperature inspection in furnace |
| CN114323098A (en) * | 2021-12-21 | 2022-04-12 | 北京科技大学 | Space protection cabin detection system and detection method |
| CN114320989A (en) * | 2021-12-31 | 2022-04-12 | 北京中科科仪股份有限公司 | Molecular pump temperature measuring device, temperature measuring method and temperature measuring device of running part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109163810B (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109163810A (en) | High-temperature rotor radiation temperature measurement device and method | |
| US5348396A (en) | Method and apparatus for optical temperature measurement | |
| MX2013015367A (en) | System and method for calibrating and/or characterizing instruments for measuring the temperature by telemetry. | |
| US20020021739A1 (en) | Blackbody cavity for calibration of infrared thermometers | |
| EP3136065B1 (en) | Method for measuring actual temperature of flame using all information about radiation spectrum and measurement system | |
| CN105784333A (en) | High-temperature spectrum emissivity measuring method and device of infrared window | |
| Rosso et al. | Validation of phosphor thermometry for industrial surface temperature measurements | |
| CN107101994B (en) | A kind of spectral emissivity measuring device of opaque material | |
| RU2617725C1 (en) | Method for determining emissivity of hard materials and device for its implementation | |
| Hatzl et al. | Direct measurements of infrared normal spectral emissivity of solid materials for high-temperature applications | |
| Lapshinov | Temperature measurement methods in microwave heating technologies | |
| CN114279597A (en) | High-precision low-power radiant heat flow meter capable of being used for radiant heat flow tracing calibration | |
| Saunders | Radiation thermometry: fundamentals and applications in the petrochemical industry | |
| CN108168709B (en) | A kind of Tokamak divertor target plate temperature accurate measurement method | |
| CN108872740B (en) | Method for calibrating and predicting ignition temperature rise of exposed bridge wire of electric explosion device under steady state | |
| CN106370311B (en) | Temperature measuring device and method for thermal analyzer | |
| Kendall | Primary absolute cavity radiometer | |
| Li et al. | Simultaneous measurement of normal spectral emissivity and temperature of materials with low thermal conductivity | |
| Hao et al. | Research on H500-type high-precision vacuum blackbody as a calibration standard for infrared remote sensing | |
| Zhang et al. | Overview of radiation thermometry | |
| Bityukov et al. | Non-contact method of measuring surface temperature | |
| US9970821B2 (en) | Characterization of spectral emissivity via thermal conductive heating and in-situ radiance measurement using a low-e mirror | |
| Atkinson et al. | Pyrometer temperature measurements in the presence of reflected radiation | |
| Ishii et al. | Radiation thermometry standards at NMIJ from− 30° C to 2800° C | |
| Adibekyan | High-accuracy spectral emissivity measurement for industrial and remote sensing applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |