CN103674321B - A kind of probe temperature-sensitive blackbody chamber for sapphire fiber temperature sensor - Google Patents
A kind of probe temperature-sensitive blackbody chamber for sapphire fiber temperature sensor Download PDFInfo
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- CN103674321B CN103674321B CN201310713314.1A CN201310713314A CN103674321B CN 103674321 B CN103674321 B CN 103674321B CN 201310713314 A CN201310713314 A CN 201310713314A CN 103674321 B CN103674321 B CN 103674321B
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Abstract
The invention provides a kind of probe temperature-sensitive blackbody chamber for sapphire fiber temperature sensor, wherein temperature-sensitive blackbody chamber inner structure adopts case structure, and temperature-sensitive blackbody chamber bottom is hemispherical, and upper end is column type, at temperature-sensitive black matrix accent machining internal thread; Temperature-sensitive black matrix cavity rear end arranges the circular light barrier with radiation adjusting hole. Blackbody chamber of the present invention adopts fusing point to prepare higher than the zirconium boride ceramic material of 3000 DEG C. Blackbody chamber radiation signal feature is stable, is easy to be received and transmission by sapphire fiber, and then ensures that sensor overall performance is stable.
Description
Technical field
The invention belongs to temperature measurement technology field, be specifically related to a kind of modified sapphire fiberThe probe temperature-sensitive blackbody chamber of temperature sensor.
Background technology
Sapphire fiber temperature sensor is a kind of according to Planck law, by manual construction black matrixChamber contacts, reaches thermal balance with test environment, then utilize high temperature resistant sapphire fiber transmission highThe heat radiation of temperature blackbody chamber, measures and converses the contact of Temperature numerical to radiation signalTemperature sensor.
Sapphire fiber temperature sensor utilizes that sapphire fiber fusing point is high, light under hot conditionsThe feature that transmission characteristic is good, at the method construct temperature-sensitive of sapphire fiber end employing sputtered filmBlackbody chamber, adopts resistant to elevated temperatures sapphire fiber will be arranged under hot environment and measured mediumThe radiation signal that reaches the black matrix of equalized temperature transfers under low temperature environment, by this radiation is believedThe measurement of number intensity can realize the measurement to blackbody temperature, thereby obtains the temperature of measured mediumDegree.
Because sapphire fiber can be because high temperature causes in more than 1700 DEG C temperature environmentsSurface occurs deteriorated, thereby affects temperature measurement accuracy and long-time stability. Even by relevantAfter anti-degradation treatment, the temperature upper limit of sapphire fiber tolerance also can only be increased to 1800, DEG C leadsThe thermometric upper limit that causes traditional sapphire fiber temperature sensor is limited in 1800. DEG C
A kind of approach that improves the sapphire fiber temperature sensor thermometric upper limit is: construct separately blackBody cavity, makes sapphire fiber just aim at the perforate of blackbody chamber and directly not contact with blackbody chamber,Sapphire fiber is away from hot environment like this, blackbody chamber temperature sapphire fiber during higher than 1800 DEG CTemperature is relatively low, and sensor just can be to measuring higher than the temperature of 1800 DEG C like this. For this reasonCondition that must be satisfied comprises: the fusing point of blackbody chamber can send surely higher than dut temperature, blackbody chamberFixed radiation signal, sapphire fiber can be stablized and accept radiation signal etc.
Summary of the invention
The object of this invention is to provide a kind of probe temperature-sensitive for sapphire fiber temperature sensorBlackbody chamber can normally be worked and output radiation signal under the temperature environment up to 2800 DEG CStable.
The technical solution used in the present invention is: a kind of spy for sapphire fiber temperature sensorTemperature-sensitive blackbody chamber, is characterized in that temperature-sensitive blackbody chamber bottom is hemispherical, and upper end is column type,At temperature-sensitive black matrix accent machining internal thread; Temperature-sensitive black matrix cavity rear end arranges with radiation adjusting holeCircular light barrier, makes temperature-sensitive blackbody chamber and light barrier form box closed cavity.
Temperature-sensitive blackbody chamber is according to following steps manufacture:
The 1st step: the column type hair that adopts two kinds of diameters of modification zirconium boride ceramic material preparation sizeBase;
The 2nd step: adopt electrical discharge machining process to process box temperature-sensitive on compared with great circle column type blankBlackbody chamber, temperature-sensitive blackbody chamber bottom is hemispherical, upper end is column type; Process at black matrix accentInternal thread;
The 3rd step: cutting roundlet column type blank is produced circular light barrier, adopts spark machined workSkill is in the radiation adjusting hole of light barrier center processing diameter 1mm;
The 4th step: pack light barrier into temperature-sensitive blackbody chamber, temperature-sensitive blackbody chamber and light barrier are formedBox closed cavity.
Advantage of the present invention:
Temperature-sensitive blackbody chamber inner structure of the present invention adopts case structure, and cavity rear end arranges band radiation and adjustsThe circular light barrier in whole hole, letter while having solved general separate type blackbody chamber and sapphire fiber couplingNumber stability problem excessive to coupled structure dependence, makes blackbody chamber radiation signal feature steadyFixed, be easy to be received and transmission by sapphire fiber, and then ensure that sensor overall performance is stable.
Temperature-sensitive blackbody chamber of the present invention adopts the preparation of modification zirconium boride ceramic material, the fusing point of this materialHigher than 3000 DEG C, therefore blackbody chamber can normally be worked under the hot environment of 2800 DEG C.
The box enclosed cavity physical efficiency that in the present invention, temperature-sensitive blackbody chamber and light barrier form ensures transmittingRate is stable; The radiation signal of blackbody chamber can only penetrate from light barrier radiation adjusting hole, installs blue preciousWhen stone optical fiber, only sapphire fiber end face need be aimed to light barrier radiation adjusting hole, blue precious after installingThe radiation signal that stone optical fiber receives and temperature relation are stable, are easy to process.
Brief description of the drawings
Fig. 1 is box temperature-sensitive blackbody chamber structural representation.
Fig. 2 is light barrier structural representation.
Fig. 3 is box temperature-sensitive blackbody chamber, light barrier, ceramic protective casing, sapphire fiber assemblingSchematic diagram.
Detailed description of the invention
As shown in Figure 1 and Figure 2, temperature-sensitive blackbody chamber 1 inner structure adopts case structure, temperature-sensitive black matrix1 bottom, chamber is hemispherical, and upper end is column type, at temperature-sensitive black matrix accent machining internal thread; SenseTemperature black matrix cavity 1 rear end arranges the circular light barrier 2 with radiation adjusting hole 3.
Core of the present invention is a kind of structural design of separate type temperature-sensitive blackbody chamber, due to this structureDesign make blackbody chamber in the time contacting with hot environment, its black body radiation Performance Ratio general structureBlackbody chamber more stable, thereby can in the time that blackbody chamber separates with optical fiber, still can be stablizedBlackbody radiation intensity and the corresponding relation of temperature, and then realize high-temperature temperature contact surveyAmount. When the material selection of blackbody chamber, only need to meet high temperature resistant, mechanical strength good, thermal conductivityHigh.
Manufacture box temperature-sensitive blackbody chamber according to following steps
The 1st step: the column type hair that adopts two kinds of diameters of modification zirconium boride ceramic material preparation sizeBase;
The 2nd step: adopt electrical discharge machining process to process box temperature-sensitive on compared with great circle column type blankBlackbody chamber 1, temperature-sensitive blackbody chamber bottom is hemispherical, upper end is column type; Add at black matrix accentWork internal thread;
The 3rd step: cutting roundlet column type blank is produced circular light barrier 2, adopts spark machined workSkill is in the radiation adjusting hole 3 of light barrier center processing diameter 1mm;
The 4th step: pack light barrier 2 into temperature-sensitive blackbody chamber 1, make temperature-sensitive blackbody chamber 1 and light barrier 2Form box closed cavity.
As shown in Figure 3, manufacture sapphire fiber temperature sensor probe according to following steps
The 1st step: prepare ceramic protective casing 4, its end processing is mated with temperature-sensitive blackbody chamber 1External screw thread, center processing column type through hole;
The 2nd step: sapphire fiber 5 good end surface grinding is arranged on to the logical of ceramic protective casing 4Kong Zhong, adjusts installation site and makes sapphire fiber end face aim at light barrier radiation adjusting hole 3;
The 3rd step: adopt threaded engagement that temperature-sensitive blackbody chamber 1 is arranged on to ceramic protective casing 4 ends.
It should be noted that: the foregoing is only the preferred embodiments of the present invention, and be not used in limitThe present invention processed, although have been described in detail the present invention with reference to previous embodiment, for thisThe technical staff in field, its technical scheme that still can record previous embodiment is enteredRow amendment, or part technical characterictic is wherein replaced on an equal basis.
Within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, changeEnter etc., within all should being included in protection scope of the present invention.
Claims (1)
1. the preparation side for the probe temperature-sensitive blackbody chamber of sapphire fiber temperature sensorMethod, is characterized in that according to following steps manufacture:
The 1st step: the column type hair that adopts two kinds of diameters of modification zirconium boride ceramic material preparation sizeBase;
The 2nd step: adopt electrical discharge machining process to process box temperature-sensitive on compared with great circle column type blankBlackbody chamber, temperature-sensitive blackbody chamber bottom is hemispherical, upper end is column type; At temperature-sensitive black matrix accentMachining internal thread;
The 3rd step: cutting roundlet column type blank is produced circular light barrier, adopts spark machined workSkill is in the radiation adjusting hole of light barrier center processing diameter 1mm;
The 4th step: pack light barrier into temperature-sensitive blackbody chamber, temperature-sensitive blackbody chamber and light barrier are formedBox closed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310713314.1A CN103674321B (en) | 2013-12-20 | 2013-12-20 | A kind of probe temperature-sensitive blackbody chamber for sapphire fiber temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310713314.1A CN103674321B (en) | 2013-12-20 | 2013-12-20 | A kind of probe temperature-sensitive blackbody chamber for sapphire fiber temperature sensor |
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| CN103674321A CN103674321A (en) | 2014-03-26 |
| CN103674321B true CN103674321B (en) | 2016-05-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333974A (en) * | 2015-12-08 | 2016-02-17 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-screen air suction type sapphire optical fiber high temperature sensor |
| CN105547502A (en) * | 2016-02-19 | 2016-05-04 | 河北智康通信技术有限公司 | Ceramic sheath of fiber high temperature detector |
| EP3282235B1 (en) * | 2016-08-08 | 2019-04-17 | Ansaldo Energia Switzerland AG | Gas turbine power plant comprising a temperature detecting device |
| CN106225951A (en) * | 2016-08-31 | 2016-12-14 | 江苏能建机电实业集团有限公司 | Sapphire fiber blackbody chamber pyrostat and temp measuring method thereof |
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| US4679934A (en) * | 1985-08-08 | 1987-07-14 | The United States Of America As Represented By The Secretary Of The Air Force | Fiber optic pyrometry with large dynamic range |
| US5364186A (en) * | 1992-04-28 | 1994-11-15 | Luxtron Corporation | Apparatus and method for monitoring a temperature using a thermally fused composite ceramic blackbody temperature probe |
| CN2220636Y (en) * | 1995-03-31 | 1996-02-21 | 肖昱 | Contact optical fibre thermal head |
| CN202522326U (en) * | 2012-04-10 | 2012-11-07 | 长春工业大学 | Contact-noncontact type sapphire infrared temperature measurement system |
| CN103162840A (en) * | 2011-12-13 | 2013-06-19 | 中国航空工业集团公司北京长城计量测试技术研究所 | High-temperature sensor for metal tubular black body hollow cavity |
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| US4679934A (en) * | 1985-08-08 | 1987-07-14 | The United States Of America As Represented By The Secretary Of The Air Force | Fiber optic pyrometry with large dynamic range |
| US5364186A (en) * | 1992-04-28 | 1994-11-15 | Luxtron Corporation | Apparatus and method for monitoring a temperature using a thermally fused composite ceramic blackbody temperature probe |
| CN2220636Y (en) * | 1995-03-31 | 1996-02-21 | 肖昱 | Contact optical fibre thermal head |
| CN103162840A (en) * | 2011-12-13 | 2013-06-19 | 中国航空工业集团公司北京长城计量测试技术研究所 | High-temperature sensor for metal tubular black body hollow cavity |
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