CN104776935B - The colour pyrometer of contact heat radiation optical fiber three - Google Patents
The colour pyrometer of contact heat radiation optical fiber three Download PDFInfo
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- CN104776935B CN104776935B CN201510177489.4A CN201510177489A CN104776935B CN 104776935 B CN104776935 B CN 104776935B CN 201510177489 A CN201510177489 A CN 201510177489A CN 104776935 B CN104776935 B CN 104776935B
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Abstract
The invention discloses the colour pyrometer of contact heat radiation optical fiber three, including inner tube, outer tube, planoconvex spotlight, photo-detector, said inner tube, the same termination of outer tube are closed in round end shape, the other end is unlimited openend, interlayer between inner tube, outer tube is lucifuge layer, and the inner tube of blind end, outer tube form one with folded lucifuge layer and be placed in by the blackbody chamber of temperature measuring point；Planoconvex spotlight is arranged on the openend of inner tube, and the nose of planoconvex spotlight is corresponding with the round end blind end of inner tube；Photo-detector is coupled by fibre bundle with planoconvex spotlight, and photo-detector is shown with signal enhanced processing and remote-transmission module is electrically connected；The material of filling is graphite, silicon-carbon and silicon molybdenum powder in the lucifuge layer；The mass ratio of the material is graphite：Silicon-carbon：Silicon molybdenum powder=1：1：1.The present invention can substitute application of the conventional temperature measuring instrument such as platinum rhodium thermocouple and heat radiation type pyrometer in high-temperature field, pyrometer is really turned into low cost, high accuracy, long-life high-temperature temperature measuring instrument.
Description
Technical field
The present invention relates to high-temperature temperature fields of measurement, more particularly to contact radiation temperature measure and the color of optical fiber three sensing neck
Domain, specifically a kind of colour pyrometer of contact heat radiation optical fiber three.
Background technology
Traditional temperature measuring instrument is mainly thermal resistance and semiconductor resistor thermometer, thermojunction type thermometer, hot spoke
Penetrate formula pyrometer.Thermal resistance is that the property for varying with temperature and changing according to the resistance value of conductor (semiconductor) is used as thermometric member
Part.Thermojunction type thermometer is measured using pyroelectric phenomena, will the two ends of two different conductors be connected into closed-loop path, by
In two ends temperature, thus thermoelectrical potential is formed in the loop, here it is pyroelectric phenomena.Heat radiation type pyrometer is to utilize hot spoke
After phenomenon thermometric, i.e. object are penetrated due to being heated, some thermal energy is into radiation energy, in the form of an electromagnetic wave to surrounding spoke
Penetrate, utilize radiation heat transfer measurement temperature in high temperature environments.
First two is both needed to use the noble dilute metals such as platinum, rhodium, tungsten, rhenium, iridium, these noble dilute metal scarcity of resources (China's demands
It is larger and supplied mainly by import), it is expensive, refine and easily cause environmental pollution when reclaiming, and thermal resistance type temperature is measured
Amount scope is generally below 800K, is unsatisfactory for high temperature (800~2000K) measurement demand.And heat radiation type pyrometer is in use
There is problems with：
(1) testee radiance is usually unstable；
(2) space of optical transport is unstable；
(3) influence of bias light；
(4) open optics gauge outfit vulnerable to pollution；
(5) it is difficult to the remote transmission of signal.
The content of the invention
The invention aims to overcome the shortcomings of heat radiation type pyrometer, searching can be instead of noble dilute metal platinum rhodium
Pyrometric product is carried out, and a kind of colour pyrometer of contact heat radiation optical fiber three is provided.
The purpose of the present invention is achieved through the following technical solutions：
The colour pyrometer of contact heat radiation optical fiber three, including
Inner tube, outer tube, said inner tube, the same termination of outer tube are closed in round end shape, and the other end is unlimited openend, interior
Interlayer between pipe, outer tube is lucifuge layer, and the inner tube of blind end, outer tube form one with folded lucifuge layer and be placed in by temperature measuring point
Blackbody chamber；
Planoconvex spotlight, it is arranged on the openend of inner tube, and the nose of planoconvex spotlight is corresponding with the round end blind end of inner tube；
Photo-detector, it is coupled by fibre bundle with planoconvex spotlight, and photo-detector is shown and teletransmission with signal enhanced processing
Module is electrically connected.
The material of filling is graphite, silicon-carbon and silicon molybdenum powder in the lucifuge layer.
The mass ratio of the material is graphite：Silicon-carbon：Silicon molybdenum powder=1：1：1.
The photo-detector is the passage Si photodiode detectors of RGB 3.
The fibre bundle is disorderly arranged, and length is 1-10 meters.
The fibre bundle length is 3 meters.
The signal enhanced processing show and remote-transmission module in, prestore the Wen-color parameter beta defined by below equation (1)
(T) measurement data when with the calibration of temperature relation：
In formula, iR、iG、iBThe respectively size of three coloured light detector red, green, blue output light electric current, RGVisited for three coloured light
Survey the sampling load resistor value of device green glow output end, kR、kBRespectively three coloured light detector is red, sampling of blue laser output end load
The ratio between load resistor value of resistance value and green glow output end, adjusts kRAnd kBValue can change β (T) linearity and resolution ratio
Characteristic.
The present invention is theoretical based on contact radiation temperature measure, using three coloured light detector output quantity and the relation of temperature, and
High-temperature temperature is accurately measured by optical fiber sensing technology, temperature measurement range is set in 800 DEG C~1800 DEG C.
The beneficial effects of the invention are as follows：
(1000-1800 DEG C) measurement of high temperature, presently mainly with the platinum-rhodium thermocouple and contactless optics of contact
Pyrometer.The former is noble dilute metal, natural resources shortage, expensive, weak output signal, easily scratched by forceful electric power is dry；The latter is because of testee
Radiance is unstable, optical transport space is easily fluctuated, easily influenceed by bias light, open optical lens vulnerable to pollution, be difficult to
Remote transmission of signal etc. is realized, its measurement accuracy is very limited.This invention can just overcome the shortcoming of the two, it is expected into
For field of pyrometry main product of new generation and by extensive use.Specifically, the present invention, which can obtain benefit, mainly following several
Point：
(1) platinum-rhodium thermocouple can be substituted, a large amount of noble dilute metal goods and materials are saved；
(2) anti-strong electromagnetic, it is easy to which the temperature Centralized monitoring of large scale equipment or multiple spot is realized in multiple spot networking；
(3) measurement range is wide, the linearity is good, precision is high；
(4) cost is low, have a wide range of application, market capacity is big.
The present invention introduces contact measurement mode, three color temperature-measurement principles, optical fiber on the basis of heat radiation type measurement high temperature and passed
Sense technology proposes the colour pyrometer of contact heat radiation optical fiber three, can substitute platinum-rhodium thermocouple and heat radiation type pyrometer etc.
Application of the conventional temperature measuring instrument in high-temperature field, makes pyrometer really turn into low cost, high accuracy, long-life high temperature temperature
Spend measuring instrument.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment；
Fig. 2 is Se-temperature parameter beta (T) and temperature T graph of relation in embodiment.
In figure, the photo-detector 9. of 7. fibre bundle of the lucifuge of 1. outer tube, 2. inner tube 3. layer 4. planoconvex spotlight, 5. viscose glue, 6. connector 8.
Signal enhanced processing is shown and remote-transmission module.
Embodiment
Technical scheme for a better understanding of the present invention, below in conjunction with the accompanying drawings and embodiment is made to present invention into one
Step is described in detail, but is not limitation of the invention.
Embodiment：
Reference picture 1, the colour pyrometer of contact heat radiation optical fiber three, including
Inner tube 2, outer tube 1, said inner tube 2, the same termination of outer tube 1 are closed in round end shape, and the other end is unlimited opening
End, the interlayer between inner tube 2, outer tube 1 is lucifuge layer 3, and the inner tube 2 of blind end, outer tube 1 form one with folded lucifuge layer 3
It is placed in by the blackbody chamber of temperature measuring point；
Planoconvex spotlight 4, it is arranged on the openend of inner tube 2, the nose of planoconvex spotlight 4 and the round end blind end phase of inner tube 2
Correspondence；
Photo-detector 8, it is coupled by fibre bundle 7 with planoconvex spotlight 4, photo-detector 8 and signal enhanced processing show and
Remote-transmission module 9 is electrically connected.
The material of filling is graphite, silicon-carbon and silicon molybdenum powder in lucifuge layer 3, and the mass ratio of the material is graphite：Silicon-carbon：Silicon
Molybdenum powder=1：1：1.
Because the high temp sensitive that inner tube 2, the bimetallic tube of outer tube 1 are constituted is popped one's head in without noble dilute metal, a large amount of expensive dilute gold have been saved
Belong to goods and materials, also reduce cost.
The photo-detector 8 is the passage Si photodiode detectors of RGB 3.
The fibre bundle 7 is disorderly arranged, and length is 1-10 meters, and the present embodiment is preferably 3 meters.
Specifically, inner tube 2, outer tube 1 are alundum tube；Fibre bundle 7 is glass optical fiber beam, identical to red, green, blue light loss,
The dry ability of scratching of the anti-electromagnetism of optical fiber is strong；Outer tube 1, inner tube 2, planoconvex spotlight 4, fibre bundle 7 and connector 6 are adhesively fixed by viscose glue 5
Together, viscose glue 5 is high temperature resistant viscose glue, and connector 6 is metal material, is mainly used in fixing fibre bundle 7.Fibre bundle 7 is visited with light
Survey the alignment of the die of device 8 and be connected viscous steady.Its nose of planoconvex spotlight 4 is placed in inner tube 2, and flush end is exposed at outside inner tube 2, lens flush end diameter
It is identical with the interior diameter of inner tube 2.
The light that the round sealed termination a-quadrant of inner tube 2 is sent at high temperature, converges through planoconvex spotlight 4 and is sent into fibre bundle 7
On photo-detector 8, photo-detector 8 export three road photoelectricity flow through signal enhanced processing show and remote-transmission module 9 after, display be tested
Temperature, and can be on demand by temperature information teletransmission to elsewhere.
First, lucifuge 3 material of layer filled between said inner tube 2, outer tube 1 are graphite, silicon-carbon and silicon molybdenum powder, lucifuge layer 3
Similar black matrix is constituted with inner tube 2, during thermometric, alundum tube is stretched into when reaching thermal equilibrium state inside and outside temperature field, two layers of alundum tube,
Above-mentioned similar black body radiation effective coverage is the round closed end region of interior alundum tube 2, causes the area radiation light by high temperature
The flush end end of planoconvex spotlight 4 is gathered, the planoconvex spotlight 4 is special planoconvex spotlight, and its nose is placed in alundum tube 2, is put down
End is exposed at outside alundum tube 2, and lens flush end diameter is identical with the interior diameter of alundum tube 2.Because alundum tube has certain space, sky is utilized
Between filter effect, make all region heat radiation light of output light of planoconvex spotlight.
Then, the output of planoconvex spotlight 4 connection glass optical fiber beam 7, glass optical fiber beam 7 is identical to red, green, blue light loss, glass
The output connection three coloured light of glass fibre bundle 7 detector 8, three coloured light detector 8 is led to using the S9032-02 types 3 of Hamamatsu companies
Road (RGB) Si photodiodes, so, glass optical fiber beam has isolated high-temperature region, three coloured light detector 8 is at normal temperature ring
Worked under border, improve its service life.
Finally, three coloured light detector 8 receives the output of glass optical fiber beam 7, on the one hand plays filter action to it, only responds
Three kinds of visible rays of red, green, blue, what another aspect three coloured light detector 8 was measured is the constituent of red, green, blue, rather than is surveyed
Measure its watt level so that the output of three coloured light detector 8 can truly reflect the high-temperature temperature corresponding to radiant light.Three coloured light
The output of detector 8 is shown by signal enhanced processing and remote-transmission module 9 is handled, and formula (1), three coloured light are prestored in module 9
Detector 8 exports the photoelectric current size of three components of red, green, blue, the size of three photoelectric currents is obtained by module 9, by formula
(1) size of β value is drawn, the β (T) according to Fig. 2 and temperature T characteristic curve can obtain the size of required temperature.
iR、iG、iBThe respectively size of three coloured light detector red, green, blue output end current, RGFor three coloured light detector
The load resistance of green glow output end, kR、kBRespectively three coloured light detector is red, blue laser output end load resistance and green glow are exported
The scale of the load resistance at end, adjusts kR、kBValue can change β (T) linearity and resolution ratio.
I in formula (1)R、iG、iBSize is determined by formula (2)：
For the spectral response characteristic function of three passages of three coloured light detector red, green, blue, E (λ, T) is general
Shown in bright gram of radiation law, such as formula (3).
Wherein, C1For Planck first radiation constant, size is 3.742 × 10-4W·μm2, C2 is that Planck second is radiated
Constant, size is 1.439 × 104μm·K。
Using contact heat radiation mode, based on optical fiber sensing technology and three color temperature-measurement principles, pyrometer of the invention with
Traditional platinum rhodium thermocouple formula pyrometer is compared, and the present invention need not use noble dilute metal, and structure is also more succinct, makes product cost
Substantially reduce；Traditional platinum rhodium thermocouple formula pyrometer has used two layers of alundum tube, plays protection and the work of fixed platinum rhodium electrode
With prolonged application is measured in high-temperature temperature, and the double-deck alundum tube of present invention application ensure that the service life of pyrometer；This hair
It is bright to use three coloured light detector, its receive glass optical fiber beam output, filter action is on the one hand played to it, only respond it is red, green,
Blue light three kinds of visible rays, another aspect three coloured light detector measurement is the composition of red, green, blue, rather than to measure its power big
It is small so that the output of three coloured light detector can more truly reflect the high-temperature temperature corresponding to radiant light.Therefore, this pyrometer makes
Obtain the measurement that high-temperature temperature is truly realized low cost, long-life, high accuracy.
Claims (1)
1. the colour pyrometer of contact heat radiation optical fiber three, it is characterised in that：Including
Inner tube, outer tube, said inner tube, the same termination of outer tube are closed in round end shape, and the other end is unlimited openend, inner tube,
Interlayer between outer tube is lucifuge layer, and the inner tube of blind end, outer tube form one with folded lucifuge layer and be placed in by temperature measuring point
Blackbody chamber；
Planoconvex spotlight, it is arranged on the openend of inner tube, and the nose of planoconvex spotlight is corresponding with the round end blind end of inner tube；
Photo-detector, it is coupled by fibre bundle with planoconvex spotlight, and photo-detector is shown and remote-transmission module with signal enhanced processing
Electrical connection；
The signal enhanced processing show and remote-transmission module in, prestore Wen-color parameter beta (T) for being defined by below equation (1) with
The measurement data during calibration of temperature relation：
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In formula, iR、iG、iBThe respectively size of three coloured light detector red, green, blue output light electric current, RGFor three coloured light detector
The sampling load resistor value of green glow output end, kR、kBRespectively three coloured light detector is red, blue laser output end sampling load resistance
The ratio between load resistor value of value and green glow output end, adjusts kRAnd kBValue can change β (T) linearity and resolution character.
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| CN104776935B true CN104776935B (en) | 2017-08-25 |
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| CN108303183B (en) * | 2018-04-11 | 2023-06-20 | 中国电子科技集团公司第三十四研究所 | Proximity broadband optical pyrometer |
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2015
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| CN2225036Y (en) * | 1994-07-26 | 1996-04-17 | 武汉工业大学 | Radiative optical fiber guide high temperature meter with block body chamber |
| CN2240144Y (en) * | 1995-10-10 | 1996-11-13 | 深圳天源迪科计算机有限公司 | Infrared trichromatic temperature measuring instrument |
| CN2501036Y (en) * | 2001-07-06 | 2002-07-17 | 何民才 | Parallel light focusing black-body cavity radiation thermometer |
| CN201903399U (en) * | 2010-10-27 | 2011-07-20 | 中国计量科学研究院 | Illumination radiation thermometer |
| CN204556134U (en) * | 2015-04-15 | 2015-08-12 | 中国电子科技集团公司第三十四研究所 | Contact heat radiation optical fiber three colour pyrometer |
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| Title |
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| "三色式热辐射光纤测温仪的研究";王玉田等;《合肥工业大学学报（自然科学版）》;19930930;第3节，图1 * |
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Effective date of registration: 20170615 Address after: 541004 the Guangxi Zhuang Autonomous Region Guilin, Liuhe Road, No. 98 Applicant after: China Electronics Technology Group Corporation No.34 Research Institute Applicant after: GUILIN XINTONG TECHNOLOGY CO., LTD. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin, Liuhe Road, No. 98 Applicant before: China Electronics Technology Group Corporation No.34 Research Institute Applicant before: GUILIN DAWEI COMMUNICATIONS TECHNOLOGY CO., LTD. Applicant before: GUILIN XINTONG TECHNOLOGY CO., LTD. |
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