CN2225036Y - Radiative optical fiber guide high temperature meter with block body chamber - Google Patents
Radiative optical fiber guide high temperature meter with block body chamber Download PDFInfo
- Publication number
- CN2225036Y CN2225036Y CN 94224749 CN94224749U CN2225036Y CN 2225036 Y CN2225036 Y CN 2225036Y CN 94224749 CN94224749 CN 94224749 CN 94224749 U CN94224749 U CN 94224749U CN 2225036 Y CN2225036 Y CN 2225036Y
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- China
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- temperature
- optical fiber
- high temperature
- chamber
- body chamber
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- Expired - Fee Related
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- Radiation Pyrometers (AREA)
Abstract
A radiative temperature meter with a black body chamber belongs to the field of radiative high temperature meter. The device uses a black empty body chamber as a temperature-sensing element and source of optical radiation, uses a diaphragm system to eliminate the optical radiation of the low temperature end of the chamber, uses optical fiber coupling to receive and transmit the radiant energy of the chamber and uses an optical fiber Y-shaped shunt to split the light into two paths, the two paths are respectively connected with two photoelectric conversion elements with different sensitive wavelengths and converted to electric signals, after filtering magnification, the electric signals determine the temperature and display by using mono-wavelength method or ratio wave. The device has the advantages of simple structure, high measuring precision, remote transmission, easy use, low price, etc., and is an ideal thermometric instrument for replacing thermo-couples.
Description
The utility model is to belong to the radiant type high temperature thermometer.
At present, high temperature measurement mainly is to adopt thermocouple thermometer and infrared radiation thermometer, and thermopair belongs to the contact temperature-measuring instrument, its precision and accuracy can be satisfied industrial needs basically, but since thermopair under hot environment, the resist chemical performance is poor, damage easily, cost is also high.Infrared radiation pyrometer belongs to non-cpntact measurement temperature instrument, it is the radiation energy that receives high temp objects with optical system, measures object temperature according to the blackbody radiation principle, and its response speed is fast.But because the radiation coefficient of high temp objects, the size of background radiation, even the variation of surround lighting in the light path, airborne temperature all influences the accuracy of its measurement, so the error of its measurement is bigger.
The pyrometer made from sapphire optical fiber can accurately measure the temperature of high temp objects, but sapphire fibre-optical drawing difficulty, fine long being restricted, and cost height.Utilize fibre bundle also can reach to measure the purpose of the temperature of high temp objects, but the fibre bundle cost is higher, is difficult for simultaneously growing, can not teletransmission.
The purpose of this utility model provides a kind of novel blackbody radiation formula fiber optic conduction high temperature thermometer, with the biography optical property and the characteristics dexterous easy to process of optical fiber, produces the high temperature measurement that can be applied to various industry spot preferably.This instrument has accuracy of measurement height, simple in structure, cheap characteristics.
The utility model advantage is in what enforcement simple in structure, easy, the measuring accuracy height, and the life-span is long, is temperature instrumentation desirable in the commercial production, has great economic benefit.
Ultimate principle of the present utility model is according to blackbody radiation theory, promptly be in the cavity of a certain temperature, the outside emittance in capital, the size of its energy satisfies Planck law with the distribution of wavelength, just can record the temperature of cavity by the radiation energy (with single wavelength method or dual wavelength colourimetry) that detects blackbody chamber, what also just can get is in the temperature of thermally equilibrated temperature field with cavity.
Its following accompanying drawing of concrete structure of the present utility model provides.
Fig. 1: blackbody radiation formula fiber optic conduction high temperature thermometer structural representation.
Fig. 2: thermometric synoptic diagram.
1-cavity, 2-adapter sleeve, 3-fiber-optical socket, 4-nut,
5-light hurdle system, 6-metal hose connecting screw, 7-optical fiber,
8-γ type shunt, 9-photo-electric conversion element, 10-digital indicator
The sealing long tube die cavity body 1 that temperature-resistant material (pottery, metallic ceramics etc.) is made, the light hurdle system 5 that its tail of cavity body openend is made up of one or more smooth hurdles, its inwall scribbles the material that absorbs infrared light, eliminates non-flashlight, to improve measuring accuracy.Receive the radiation energy and the teletransmission of cavitys again with optical fiber 7, optical fiber Y type shunt 8 is divided into two parts with luminous energy, calculates and displays temperatures with photo-electric conversion element 9 and amplification filtering, digital display circuit 10 again.
During measurement cavity placed and treat the thermometric field, and reach thermal equilibrium with it, the radiation energy of cavity is after light hurdle system filters the radiation energy of cavity lower temperature, receive and teletransmission with optical fiber, through Y type shunt radiation energy is divided into two ones through light, photo-electric conversion element through different sensitive wave lengths becomes electric signal respectively, can determine temperature field degree with arbitrary road photosignal according to radiation theory, and the ratio of also available two-way photosignal is determined a temperature temperature.
The utility model has utilized optical fiber to pass the characteristics of light, to the metering house, photo-electric conversion element is in the metastable room temperature teletransmission of blackbody radiation energy, so its detection sensitivity is stable, the measuring accuracy height.
Claims (2)
1, a kind of blackbody chamber radiant type fiber optic conduction high temperature thermometer, it is characterized in that with blackbody chamber 1 as temperature-sensing element and optical emitter, receive and the radiation energy of teletransmission cavity with optical fiber 7 coupling, light is divided into two-way through optical fiber Y type shunt 8 and after photo-electric conversion element 9 carries out amplification filtering, sends into display circuit 10 and carry out temperature and show.
2, blackbody chamber radiant type fiber optic conduction high temperature thermometer according to claim 1, the openend that it is characterized in that cavity 1 have a smooth hurdle system 5, and it can be the light hurdle group that a light hurdle or a plurality of smooth hurdles are formed, and its inwall scribbles the material that absorbs infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224749 CN2225036Y (en) | 1994-07-26 | 1994-07-26 | Radiative optical fiber guide high temperature meter with block body chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224749 CN2225036Y (en) | 1994-07-26 | 1994-07-26 | Radiative optical fiber guide high temperature meter with block body chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2225036Y true CN2225036Y (en) | 1996-04-17 |
Family
ID=33838075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94224749 Expired - Fee Related CN2225036Y (en) | 1994-07-26 | 1994-07-26 | Radiative optical fiber guide high temperature meter with block body chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2225036Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439900C (en) * | 2005-12-14 | 2008-12-03 | 中国科学院金属研究所 | Method for testing material blackness coefficient |
| CN102455222A (en) * | 2010-10-21 | 2012-05-16 | 甘志银 | Method for measuring membrane temperature in metal organic chemical vapor deposition (MOCVD) equipment in real time and measuring device |
| CN104776935A (en) * | 2015-04-15 | 2015-07-15 | 中国电子科技集团公司第三十四研究所 | Contact type thermal radiation optical fiber three-color pyrometer |
| 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 |
-
1994
- 1994-07-26 CN CN 94224749 patent/CN2225036Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439900C (en) * | 2005-12-14 | 2008-12-03 | 中国科学院金属研究所 | Method for testing material blackness coefficient |
| CN102455222A (en) * | 2010-10-21 | 2012-05-16 | 甘志银 | Method for measuring membrane temperature in metal organic chemical vapor deposition (MOCVD) equipment in real time and measuring device |
| CN102455222B (en) * | 2010-10-21 | 2013-11-13 | 甘志银 | Method for measuring membrane temperature in metal organic chemical vapor deposition (MOCVD) equipment in real time and measuring device |
| CN104776935A (en) * | 2015-04-15 | 2015-07-15 | 中国电子科技集团公司第三十四研究所 | Contact type thermal radiation optical fiber three-color pyrometer |
| CN104776935B (en) * | 2015-04-15 | 2017-08-25 | 中国电子科技集团公司第三十四研究所 | The colour pyrometer of contact heat radiation optical fiber three |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |