CN202196029U - Transmitting coefficient measuring instrument - Google Patents
Transmitting coefficient measuring instrument Download PDFInfo
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- CN202196029U CN202196029U CN2011202965059U CN201120296505U CN202196029U CN 202196029 U CN202196029 U CN 202196029U CN 2011202965059 U CN2011202965059 U CN 2011202965059U CN 201120296505 U CN201120296505 U CN 201120296505U CN 202196029 U CN202196029 U CN 202196029U
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Abstract
The utility model relates to a transmitting coefficient measuring instrument, comprising a vacuum cover, an optical system, a radiation measuring system and a blackbody furnace device, wherein the vacuum cover (18) is rectangular and is internally provided with the optical system and the blackbody furnace device. In the transmitting coefficient measuring instrument, the structure is simple, the operation is convenient, and the transmitting coefficient of an object can be accurately and quickly measured; and in measurement, the same conditions are guaranteed and the accuracy and the efficiency of measurement are improved.
Description
Technical field
The utility model relates to the measurement instrument field of measuring temperature, relates in particular to a kind of emission ratio measuring instrument of ability fast and accurate measurement emission ratio.
Background technology
The object that is higher than absolute zero, it is infrared all can to belong to environmental radiation to it.This because of object self temperature outwards emitted energy be called heat radiation.The temperature of thermal-radiating intensity and spectral component and radiator has very big relation, so heat radiation also is called as temperature radiation.Thermal-radiating rule is one of nature universal law, and it is the basis of theoretical research and technical application in Infrared Physics and the application thereof.Heat radiation is different with the radiation of other form.For an isolated system, the energy exchange of heat radiation form can reach thermal equilibrium, and for other radiation, like electroluminescence, electroluminescent, chemiluminescences etc., their radiation are not balances.
Under thermal equilibrium condition, all objects are under the fixed temperature, and concerning a certain wavelength, it is that it all is a constant for all objects that the character of the emissive power of object and the ratio of absorptive power and object self does not have.Be that (λ, T) (λ, T) both are very big because of the object difference all changes with absorptance α for radiation out-degree M.But M (λ, T)/(λ T) concerning all objects, is the universal function of wavelength and temperature to α.Kirchhoff's law that Here it is.
Learn that by this law derivation the radiation of object only depends on radiation wavelength and temperature, irrelevant with the material that constitutes object.Yet, the radiation of actual object, except that depending on wavelength and temperature, also relevant with the material character that constitutes object.For this reason, need to introduce the physical quantity relevant, i.e. an emissivity with material character.
Emissivity is exactly an actual object and the ratio of equal temperature black matrix radiant flux under the same conditions.So-called the same terms is meant identical geometric condition (area of emitted radiation, the solid angle of measuring radiation power and direction) and spectrum condition (spectral range of measuring radiation flux).
So, to study the perhaps emissivity of Measuring Object why? The emissivity of the material of clothing is related to the heat-insulating property of clothing.The emissivity characteristic of aerospace craft case material is extremely important to its flight safety, and for example the little material of emissivity can play good stealthy effect.The material that emissivity is high can be controlled or the like easily.The grasp of object emissivity characteristic and research and our productive life have close contact.Below all be the principle and the purpose of drawing about emissivity.
For this reason, the deviser of the utility model comprehensively is engaged in for a long time the experience and the achievement of related industry for many years through concentrating on studies and designing, and research and design goes out a kind of emission ratio measuring instrument, and it can carry out the emission ratio of object accurately and fast measuring.
Summary of the invention
The purpose of the utility model is to provide a kind of emission ratio measuring instrument, and it is simple in structure, and is easy to operate, and it can carry out the emission ratio of object accurately and fast measuring, and in measurement, has guaranteed the identical of condition, has improved precision and the efficient measured.
For realizing above-mentioned purpose, the utility model discloses a kind of emission ratio measuring instrument, this emission ratio measuring instrument comprises vacuum (-tight) housing, optical system, radioactivity detection, identificationm, and computation and blackbody furnace device; Vacuum (-tight) housing 18 is the rectangular vacuum cover body, is provided with optical system and blackbody furnace device in it, it is characterized in that:
This blackbody furnace device comprises blackbody chamber 9, locking flange 11, induction coil 16 and shell 17; Blackbody chamber 9 two ends have opening spaced apart from each other; The opening of its left end is the blackbody radiation opening, and the opening of its right-hand member is a sample radiation opening, and this sample radiation opening is provided with the sample groove to place to be tested 10; Be provided with internal thread in the sample groove outside; One locking flange 11 is positioned at this sample radiation opening and has external thread with the engagement of this internal thread so that sample to be tested 10 is fixed in the sample groove, and induction coil 16 uniform spirals are around the periphery of this blackbody chamber 9, and the two ends of this induction coil (16) are respectively A electrode 19 and B electrode 20;
This optical system comprises first catoptron 1, second catoptron 2, intermediate mirrors 3, the 3rd catoptron 4, the 4th catoptron 5, measurement window 6 and servomotor 7; This first catoptron 1 is positioned at the blackbody radiation open outer side and reflects towards the below with the ejaculation infrared ray with the blackbody radiation opening, and the 3rd catoptron 3 is positioned at the downside of this first catoptron 1 reflecting towards intermediate mirrors 3 from the reflected infrared of first catoptron 1; This second catoptron 2 is positioned at sample radiation open outer side and reflects towards the below with the ejaculation infrared ray with sample radiation opening, and the 4th catoptron 5 is positioned at the downside of this second catoptron 2 reflecting towards intermediate mirrors 3 from the reflected infrared of second catoptron 2; The centre position that this intermediate mirrors 3 is arranged at second catoptron 3 and the 4th catoptron 5 is arranged at measurement window 6 reflections on the vacuum (-tight) housing 18 with the reflected infrared court with second catoptron 3 and the 4th catoptron 5; Servomotor 7 is arranged on this intermediate mirrors 6 to control its rotation.
Wherein: radioactivity detection, identificationm, and computation is arranged at the outside of vacuum (-tight) housing 18, and it comprises monochromator 21, radiation out-degree measuring instrument 22, signal processing system 23 and output display device 24; This monochromator 21 is arranged at the outside of above-mentioned measurement window 6, and radiation out-degree measuring instrument 22 is connected in this monochromator 21, and signal processing system 23 connects this radiation out-degree measuring instrument 22, and output display device 24 is connected in this signal processing apparatus 23.
Wherein: between blackbody chamber 9 and induction coil 16, also have graphite bush 14 and heat-insulation layer 15; Graphite bush 14 is arranged at the periphery and the two ends of blackbody chamber 9 and stretches out blackbody chamber 9; The two ends of this graphite bush 14 are respectively arranged with first water-cooling flange 12 and second water-cooling flange 13, and heat-insulation layer 15 is arranged at the skin of this graphite bush 14.
Wherein: be outside equipped with this shell 17 at induction coil 16, this shell 17 is fixed in the vacuum (-tight) housing 18.
Wherein: also comprise control system; This control system comprises master control system 25, vacuum system 26, vacuum tightness detection system 27, hydraulic pressure detection system 28, PID controller 29, temperature measurement system 30, cooling-water pump 31, IGBT driving circuit 32, high frequency electric source 33, frequency detecting system 34, voltage detecting system 35, current detecting system 36 and is fixed in the thermopair 8 in the blackbody chamber; Wherein, Cooling-water pump 31 is communicated with first water-cooling flange 12 and second water-cooling flange 13; High frequency electric source 33 is connected with B electrode 20 with A electrode 19; Vacuum system 26 is connected with vacuum (-tight) housing 18 so that the vacuum in it to be provided, and vacuum tightness detection system 27 is connected with vacuum (-tight) housing 18 interior vacuum transducers, and temperature measurement system 30 is connected with this thermopair 8.
Wherein: master control system 25 is connected with vacuum system 26, hydraulic pressure detection system 28 and PID controller 29; This vacuum system 26 is connected with vacuum tightness detection system 27; This hydraulic pressure detection system 28 is connected with cooling-water pump 31; This PID controller 29 is connected with IGBT driving circuit 32 with temperature measurement system 30, and this IGBT driving circuit 32 is connected with high frequency electric source 33, frequency detecting system 34, voltage detecting system 35 and current detecting system 36.
Through said structure, the utility model can be realized following technique effect:
1, simple in structure, easy to operate;
2, hot sample places the black matrix cavity material, and under identical heating condition, guarantees that black matrix and sample are in identical environment;
3, the electromagnetic heating technique of system's employing, and the winding of inductive coil, homogeneous heating;
4, blackbody radiation out-degree and object under test radiation out-degree are reflected by same concave mirror timesharing, have eliminated the measuring error that is caused by the optical device discreteness, have improved degree of accuracy.
The detailed content of the utility model can through after explanation and the institute's accompanying drawing stated obtain.
Description of drawings
Fig. 1 has shown the synoptic diagram of the emission ratio measuring instrument of the utility model.
Fig. 2 has shown the electrical structure synoptic diagram of the utility model.
The Reference numeral implication is following:
1, the first emission mirror; 2, second catoptron; 3, intermediate mirrors; 4, the 3rd catoptron; 5, the 4th catoptron; 6, measurement window; 7, servomotor; 8, thermopair (tungsten-rhenium thermocouple); 9, blackbody chamber; 10, sample to be tested; 11, locking flange; 12, first water-cooling flange; 13, second water-cooling flange; 14, graphite bush; 15, heat-insulation layer; 16, induction coil; 17, shell; 18, vacuum (-tight) housing; 19, A electrode; 20, B electrode; 21, monochromator; 22, radiation out-degree measuring instrument; 23, signal processing system; 24, output display device; 25, master control system; 26, vacuum system; 27, vacuum tightness detection system; 28, hydraulic pressure detection system; 29, PID controller; 30, temperature measurement system; 31, cooling-water pump; 32, IGBT driving circuit; 33, high frequency electric source; 34, frequency detecting system; 35, voltage detecting system; 36, current detecting system.
Embodiment
Referring to Fig. 1, shown the synoptic diagram of the emission ratio measuring instrument of the utility model, this emission ratio measuring instrument comprises vacuum (-tight) housing, optical system, radioactivity detection, identificationm, and computation, blackbody furnace device and control system; Vacuum (-tight) housing 18 is the rectangular vacuum cover body, is provided with optical system and blackbody furnace device in it.
Wherein, this blackbody furnace device comprises blackbody chamber 9, locking flange 11, induction coil 16 and shell 17 at least, and blackbody chamber 9 two ends have opening spaced apart from each other; The opening of its left end is the blackbody radiation opening; The opening of its right-hand member is a sample radiation opening, and this sample radiation opening is provided with the sample groove to place sample to be tested 10, is provided with internal thread in the sample groove outside; One locking flange 11 is positioned at this sample radiation opening; Have external thread with the engagement of this internal thread on it so that sample to be tested 10 is fixed in the sample groove, induction coil 16 be the periphery of uniform spiral around this blackbody chamber 9, and the two ends of this induction coil 16 are respectively A electrode 19 and B electrode 20.
Wherein, this optical system comprises first catoptron 1, second catoptron 2, intermediate mirrors 3, the 3rd catoptron 4, the 4th catoptron 5, measurement window 6 and servomotor 7; This first catoptron 1 and the 3rd catoptron 4 are formed the blackbody radiation reflecting system; This first catoptron 1 is positioned at the blackbody radiation open outer side and reflects towards the below with the ejaculation infrared ray with the blackbody radiation opening, and the 3rd catoptron 3 is positioned at the downside of this first catoptron 1 reflecting towards intermediate mirrors 3 from the reflected infrared of first catoptron 1; This second catoptron 2 and the 4th catoptron 5 are formed sample radiation reflecting system; This second catoptron 2 is positioned at sample radiation open outer side and reflects towards the below with the ejaculation infrared ray with sample radiation opening, and the 4th catoptron 5 is positioned at the downside of this second catoptron 2 reflecting towards intermediate mirrors 3 from the reflected infrared of second catoptron 2; The centre position that this intermediate mirrors 3 is arranged at second catoptron 3 and the 4th catoptron 5 is arranged at measurement window 6 reflections on the vacuum (-tight) housing 18 with the reflected infrared court with second catoptron 3 and the 4th catoptron 5; Servomotor 7 is arranged on this intermediate mirrors 6 to control its rotation.
Preferably; Between blackbody chamber 9 and induction coil 16, also have graphite bush 14 and heat-insulation layer 15; Graphite bush 14 is arranged at the periphery and the two ends of blackbody chamber 9 and stretches out blackbody chamber 9; The two ends of this graphite bush 14 are respectively arranged with first water-cooling flange 12 and second water-cooling flange 13, have on this first water-cooling flange 12 and second water-cooling flange 13 with this graphite bush 14 on the external thread of internal thread engagement, heat-insulation layer 15 is arranged at the skin of this graphite bush 14 so that heat insulation effect to be provided.
Preferably, be outside equipped with shell 17 at induction coil 16, this shell 17 is fixed in the vacuum (-tight) housing 18 so that the blackbody furnace device is fixed on the vacuum (-tight) housing.
Wherein, radioactivity detection, identificationm, and computation is arranged at the outside of vacuum (-tight) housing 18, and it comprises monochromator 21, radiation out-degree measuring instrument 22, signal processing system 23 and output display device 24; This monochromator 21 is arranged at the outside of above-mentioned measurement window 6 to receive the infrared ray of these intermediate mirrors 3 reflections; Radiation out-degree measuring instrument 22 is connected in this monochromator 21 to obtain radiancy; Signal processing system 23 connects this radiation out-degree measuring instrument 22 and has carried out signal Processing, and output display device 24 is connected in this signal processing apparatus 23 to carry out signal and radiometric output and demonstration.
Wherein, Control system comprises master control system 25, vacuum system 26, vacuum tightness detection system 27, hydraulic pressure detection system 28, PID controller 29, temperature measurement system 30, cooling-water pump 31, IGBT driving circuit 32, high frequency electric source 33, frequency detecting system 34, voltage detecting system 35, current detecting system 36 and is fixed in the thermopair 8 in the blackbody chamber; Wherein, Cooling-water pump 31 is communicated with first water-cooling flange 12 and second water-cooling flange 13 so that the water-cooled circulation to be provided; High frequency electric source 33 is connected with B electrode 20 with A electrode 19 thinks that induction coil 16 provides high-frequency electrical; Vacuum system 26 is connected with vacuum (-tight) housing 18 so that the vacuum in it to be provided; Vacuum tightness detection system 27 is connected with vacuum (-tight) housing 18 interior vacuum transducer (not shown) to measure the vacuum tightness in the vacuum (-tight) housing 18, and temperature measurement system 30 is connected with this thermopair 8 to measure the temperature in the blackbody chamber and temperature signal is provided; Wherein, Master control system 25 is connected with vacuum system 26, hydraulic pressure detection system 28 and PID controller 29; This vacuum system 26 is connected with vacuum tightness detection system 27; This hydraulic pressure detection system 28 is connected with cooling-water pump 31, and this PID controller 29 is connected with IGBT driving circuit 32 with temperature measurement system 30, and this IGBT driving circuit 32 is connected with high frequency electric source 33, frequency detecting system 34, voltage detecting system 35 and current detecting system 36.
The emission ratio measuring instrument of the utility model is the instrument that is used for Measuring Object emissivity characterisitic parameter.Change because the radiation characteristic of object can change with object temperature, so this equipment can be used to measure all temps, preferred 300-2500 ℃, environment under, the emissivity of object.：
Wherein, total system is operated in the vacuum environment of a sealing, so not only can overcome the problem of oxidation of sample to be tested in hot environment, can guarantee that also blackbody chamber works in stable environment; Instrument is installed to position as shown in the figure with sample to be tested 10 before using, and is fastened on the blackbody chamber 9 with locking flange 11; Water- cooling flange 12,13 is guaranteed blackbody radiation, and radiation has identical condition with sample to be tested; Monochromator guarantees blackbody radiation and sample to be tested radiation identical spectra condition, and temperature survey and control system have guaranteed the blackbody radiation temperature conditions identical with sample to be tested.
Based on top description; When instrument at certain temperature (T), start servomotor 7,3 one-tenths an angle of 90 degrees rotations of reflective mirror in the middle of making; Radiation out-degree MA ' (λ when concave surface black matrix when A ' time radiation out-degree measuring instrument records temperature T of reflective mirror; T), when the reflective mirror concave surface when B ' time radiation out-degree measuring instrument records temperature T sample to be tested radiation out-degree MB ' (λ, T).Pass through signal processing system.Calculate temperature T, during wavelength X, the emissivity of sample to be tested.
The computing formula of emissivity in the system:
Through the adjustment monochromator, for example: can measure sample when temperature T, the emissivity of the correspondence of any wavelength of 1-20 μ m; Can set through changing temperature equally, measure sample the time, the emissivity of 300-2500 ℃ of arbitrary temp point in wavelength X (arbitrary wavelength among the preferred 1-20 μ m) arbitrarily.
Thus, the utlity model has following advantage:
1, simple in structure, easy to operate;
2, hot sample places the black matrix cavity material, and under identical heating condition, guarantees that black matrix and sample are in identical temperature environment;
3, the electromagnetic heating technique of system's employing, and the winding of inductive coil, homogeneous heating;
4, blackbody radiation out-degree and object under test radiation out-degree are reflected by same concave mirror timesharing, have eliminated the measuring error that is caused by the optical device discreteness, have improved degree of accuracy.
It is obvious that, and above description and record only are to give an example rather than disclosure, application or use in order to limit the utility model.Though described and be described in the drawings embodiment in an embodiment; But the optimal mode that the utility model does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present is with the specific examples of the instruction of implementing the utility model, and the scope of the utility model will comprise any embodiment of the instructions that falls into the front and appended claim.
Claims (6)
1. emission ratio measuring instrument, this emission ratio measuring instrument comprises vacuum (-tight) housing, optical system, radioactivity detection, identificationm, and computation and blackbody furnace device; Vacuum (-tight) housing (18) is the rectangular vacuum cover body, is provided with optical system and blackbody furnace device in it, it is characterized in that:
This blackbody furnace device comprises blackbody chamber (9), locking flange (11), induction coil (16) and shell (17); Blackbody chamber (9) two ends have opening spaced apart from each other; The opening of its left end is the blackbody radiation opening, and the opening of its right-hand member is a sample radiation opening, and this sample radiation opening is provided with sample groove (10) to be tested to place; Be provided with internal thread in the sample groove outside; One locking flange (11) is positioned at this sample radiation opening and has external thread with the engagement of this internal thread so that sample to be tested (10) is fixed in the sample groove, and spiral is around the periphery of this blackbody chamber (9) uniformly for induction coil (16), and the two ends of this induction coil (16) are respectively A electrode (19) and B electrode (20);
This optical system comprises first catoptron (1), second catoptron (2), intermediate mirrors (3), the 3rd catoptron (4), the 4th catoptron (5), measurement window (6) and servomotor (7); This first catoptron (1) is positioned at the blackbody radiation open outer side and reflects towards the below with the ejaculation infrared ray with the blackbody radiation opening, and the 3rd catoptron (3) is positioned at the downside of this first catoptron (1) reflecting towards intermediate mirrors (3) from the reflected infrared of first catoptron (1); This second catoptron (2) is positioned at sample radiation open outer side and reflects towards the below with the ejaculation infrared ray with sample radiation opening, and the 4th catoptron (5) is positioned at the downside of this second catoptron (2) reflecting towards intermediate mirrors (3) from the reflected infrared of second catoptron (2); The centre position that this intermediate mirrors (3) is arranged at second catoptron (3) and the 4th catoptron (5) is arranged at measurement window (6) reflection on the vacuum (-tight) housing (18) with the reflected infrared court with second catoptron (3) and the 4th catoptron (5); Servomotor (7) is arranged at this intermediate mirrors (6) and goes up to control its rotation.
2. emission ratio measuring instrument as claimed in claim 1 is characterized in that: radioactivity detection, identificationm, and computation is arranged at the outside of vacuum (-tight) housing (18), and it comprises monochromator (21), radiation out-degree measuring instrument (22), signal processing system (23) and output display device (24); This monochromator (21) is arranged at the outside of above-mentioned measurement window (6); Radiation out-degree measuring instrument (22) is connected in this monochromator (21); Signal processing system (23) connects this radiation out-degree measuring instrument (22), and output display device (24) is connected in this signal processing apparatus (23).
3. according to claim 1 or claim 2 emission ratio measuring instrument; It is characterized in that: between blackbody chamber (9) and induction coil (16), also have graphite bush (14) and heat-insulation layer (15); Graphite bush (14) is arranged at the periphery and the two ends of blackbody chamber (9) and stretches out blackbody chamber (9); The two ends of this graphite bush (14) are respectively arranged with first water-cooling flange (12) and second water-cooling flange (13), and heat-insulation layer (15) is arranged at the skin of this graphite bush (14).
4. according to claim 1 or claim 2 emission ratio measuring instrument, it is characterized in that: be outside equipped with this shell (17) at induction coil (16), this shell (17) is fixed in the vacuum (-tight) housing (18).
5. emission ratio measuring instrument as claimed in claim 3; It is characterized in that: also comprise control system; This control system comprises master control system (25), vacuum system (26), vacuum tightness detection system (27), hydraulic pressure detection system (28), PID controller (29), temperature measurement system (30), cooling-water pump (31), IGBT driving circuit (32), high frequency electric source (33), frequency detecting system (34), voltage detecting system (35), current detecting system (36) and is fixed in the thermopair (8) in the blackbody chamber; Wherein, Cooling-water pump (31) is communicated with first water-cooling flange (12) and second water-cooling flange (13); High frequency electric source (33) is connected with B electrode (20) with A electrode (19); Vacuum system (26) is connected with vacuum (-tight) housing (18) so that the vacuum in it to be provided, and vacuum tightness detection system (27) is connected with the interior vacuum transducer of vacuum (-tight) housing (18), and temperature measurement system (30) is connected with this thermopair (8).
6. emission ratio measuring instrument as claimed in claim 5; It is characterized in that: master control system (25) is connected with vacuum system (26), hydraulic pressure detection system (28) and PID controller (29); This vacuum system (26) is connected with vacuum tightness detection system (27); This hydraulic pressure detection system (28) is connected with cooling-water pump (31); This PID controller (29) is connected with IGBT driving circuit (32) with temperature measurement system (30), and this IGBT driving circuit (32) is connected with high frequency electric source (33), frequency detecting system (34), voltage detecting system (35) and current detecting system (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202965059U CN202196029U (en) | 2011-08-16 | 2011-08-16 | Transmitting coefficient measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202965059U CN202196029U (en) | 2011-08-16 | 2011-08-16 | Transmitting coefficient measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN202196029U true CN202196029U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202965059U Expired - Fee Related CN202196029U (en) | 2011-08-16 | 2011-08-16 | Transmitting coefficient measuring instrument |
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| Country | Link |
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| CN (1) | CN202196029U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043556A (en) * | 2015-05-13 | 2015-11-11 | 张锁弟 | High-efficiency light type high-temperature black-body furnace |
| CN105203589A (en) * | 2015-09-18 | 2015-12-30 | 吉林大学 | Thermal-infrared emission rate determining device and method |
| CN106979926A (en) * | 2016-02-07 | 2017-07-25 | 渤海大学 | The black matrix and sample integral type heater and method measured for spectral emissivity |
-
2011
- 2011-08-16 CN CN2011202965059U patent/CN202196029U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043556A (en) * | 2015-05-13 | 2015-11-11 | 张锁弟 | High-efficiency light type high-temperature black-body furnace |
| CN105203589A (en) * | 2015-09-18 | 2015-12-30 | 吉林大学 | Thermal-infrared emission rate determining device and method |
| CN105203589B (en) * | 2015-09-18 | 2018-02-27 | 吉林大学 | A kind of thermal infrared emissivity measure device and its assay method |
| CN106979926A (en) * | 2016-02-07 | 2017-07-25 | 渤海大学 | The black matrix and sample integral type heater and method measured for spectral emissivity |
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Granted publication date: 20120418 Termination date: 20150816 |
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