CN2501036Y - Parallel light focusing black-body cavity radiation thermometer - Google Patents
Parallel light focusing black-body cavity radiation thermometer Download PDFInfo
- Publication number
- CN2501036Y CN2501036Y CN 01250013 CN01250013U CN2501036Y CN 2501036 Y CN2501036 Y CN 2501036Y CN 01250013 CN01250013 CN 01250013 CN 01250013 U CN01250013 U CN 01250013U CN 2501036 Y CN2501036 Y CN 2501036Y
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- CN
- China
- Prior art keywords
- directional light
- blackbody chamber
- thermometer
- blackbody
- optical fiber
- Prior art date
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- Expired - Fee Related
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Abstract
Disclosed is a parallel light focusing blackbody cavity radiation thermometer which comprises a blackbody cavity, a connecting joint, a light guide tube, a parallel light focusing mirror, a single core long optical fiber, a color separation device, a photoelectric conversion device, a signal processing and display system eight parts. The utility model is characterized in that all kinds of materials are used to make the standardized and replaceable blackbody cavity, the parallel light focusing mirror is used to focus the radiation light at the bottom of the blackbody cavity and the intra-modulated weak-light detection technique is used to fulfill the photoelectric conversion. The thermometer can not only detect precisely the real temperature of the environment in which the blackbody cavity exists, but also can realize the light transmission technique of the single core long optical fiber. The utility model can detect the temperatures of various metal liquid, molten salt, electrolyte and all kinds of heating furnaces and overcome the affects of severe environments on metering the temperature.
Description
The utility model is a kind of thermometer.
The radiation temperature instrument is a kind of equipment of measuring temperature, has the advantage of contactless thermometric.Introduce optical fiber technology, can overcome the influence of rugged surroundings again preferably, be subjected to the attention of a lot of scientific and technical personnel and branch of industry.But also there are some problems in actinometry, and the measured body radiance is difficult to determine and is changeable is one of subject matter.For this reason, people invest blackbody chamber to sight, make measured body and blackbody chamber reach thermal equilibrium.Utilize the radiance of blackbody chamber to approach 1, measure the temperature of blackbody chamber, promptly measured the true temperature of measured body indirectly.Two kinds of blackbody chambers are arranged at present, the one, utilize optical fiber itself, remove the protective seam of cms long at its end, blast sanded surface, the even resistant to elevated temperatures oxidation-resistant material of sputter one deck on hair side constitutes a blackbody chamber then.The 2nd, do a blackbody chamber at its front end, allow the heat radiation of blackbody chamber enter optical fiber, reach the other end and carry out opto-electronic conversion and detection.Said structure has some weak point.The first, blackbody chamber often will be placed in the high temperature more than 1000 ℃, also will insert in the high-temp liquid sometimes, so blackbody chamber is often burnt.The second, the light signal that utilizes optical fiber directly to collect is very limited, brings very big difficulty for opto-electronic conversion and signal Processing.Therefore the application surface of said structure is narrower, is unfavorable for applying.
The utility model proposes a kind of follow-on blackbody chamber optical fiber radiation thermometer, overcome above-mentioned deficiency.The first, be processed into the blackbody chamber of same shape with various different materials, select a kind of blackbody chamber at certain special-purpose, can be convenient for changing after damaging.Second, utilize optical lens to focus on blackbody chamber bottom heat radiation to fiber end face, converge enough light signals and carry out opto-electronic conversion and processing after optical fiber forwards the other end to, add and adopt internal modulation low-light detection technique, make this thermometric become very feasible and reliable, for solid foundation has been established in the widespread use of blackbody chamber thermometric.This thermometer not only can be used for high temperature measurement in the multiple heating furnace hall, also can be used for thermometrics such as various liquid metals, electrolytic solution and fused salt.
The said thermometer of the utility model as shown in Figure 1, it is made up of 8 parts: blackbody chamber (1), connector (2), light pipe (3), directional light focus lamp (4), single core long optical fibers (5), colour esensitized equipment (6), electrooptical device (7), signal Processing and display system (8).
Accompanying drawing 1: directional light focuses on blackbody chamber radiation temperature instrument
The utility model concrete structure and Action Specification thereof are as follows:
Blackbody chamber (1) can be made normalized cavity by materials such as pottery, metallic ceramics, metals, and cavity length compares greater than 10 with diameter, and the inner chamber hacking has interchangeability to each other.Connector (2) can be fire resistive material or metal, and its effect is blackbody chamber (1) is connected easily with light pipe (3) and tightens up.Light pipe (3) is the metal tube of a collimation, and internal diameter equals or sells greater than blackbody chamber (1), and the directional light that helps blackbody chamber (1) bottom projects on the focus lamp (4) unobstructedly.Directional light focus lamp (4) is screwed to the rear end of light pipe (3) coaxially.The effect of directional light focus lamp (4) is that the directional light that send blackbody chamber (1) bottom is focused on the end face of optical fiber (5).Blackbody chamber (1) bottom luminous more even more satisfies the blackbody radiation condition.Directional light focuses on the requirement that cone angle satisfies optical fiber (5) numerical aperture.One end of single core long optical fibers (5) is plugged on the focal plane of directional light focus lamp (4), and the other end and colour esensitized equipment (6) are coaxial docking.Colour esensitized equipment (6) can be that bifurcation fiber adds the interference filter composition, also can add the prism combination by grating.Electrooptical device (7) is the internal modulation photoelectric tube, also can be the photosensitive alignment of internal modulation.Signal Processing and display system (8) are made up of analog signal processing and single-chip microcomputer or PC, except showing, also have computer interface.
Principle of the present utility model is the blackbody chamber radiation temperature measurement.As long as blackbody chamber temperature field evenly, the long diameter ratio in chamber is greater than ten, and its emission ratio is in close proximity to 1.Measure the temperature of blackbody chamber, just found the true temperature of its periphery quite exactly.
The blackbody chamber that the utility model is made standard and can be exchanged with multiple material, take the radiant light of parallel light focusing mirror focusing black-body bottom emission and realize opto-electronic conversion with Intramodulated Weaklight Detection Technique, this thermometer is had the following advantages:
1. the interchangeability of blackbody chamber is that the extensive use of this thermometer is laid a good foundation, and particularly those condition extreme differences cause black matrix The point for measuring temperature that the chamber is easy to damage adopts the lower black matrix material of price, utilizes the interchangeability of blackbody chamber to set up reliably at this place Thermometric.
2. introduce the directional light focus lamp, can the more blackbody chamber radiation energy of pinching, add internal modulation low-light detection technique, make single core long optical fibers pass luminous energy and use reliably, for the temperature measurement on-line of rugged surroundings has been established solid technical foundation.
Claims (5)
1. a directional light focuses on blackbody chamber radiation temperature instrument, and it is made up of blackbody chamber (1), connector (2), light pipe (3), directional light focus lamp (4), single core long optical fibers (5), colour esensitized equipment (6), electrooptical device (7) and signal Processing and display system (8).
2. the said thermometer of claim 1 is characterized in that normalized blackbody chamber (1) is to make with pottery, metallic ceramics or metal, and blackbody chamber (1) can exchange each other.
3. the said thermometer of claim 1 is characterized in that the light pipe (3) that has a metal material to make.This manages collimation, the directional light of blackbody chamber (1) bottom can be passed to directional light focus lamp (4).
4. the said thermometer of claim 1 is characterized in that having a directional light focus lamp (4), and it is burnt poly-to optical fiber (5) end face with the directional light of blackbody chamber (1) bottom emission, focuses on the requirement that cone angle satisfies optical fiber (5) numerical aperture.The coaxial easily rear end that is screwed onto light pipe (3) of directional light focus lamp (4).
5. the said thermometer of claim 1 is characterized in that being made up of single core long optical fibers (5), colour esensitized equipment (6) and electrooptical device (7).Said colour esensitized equipment (6) is that bifurcation fiber adds interference filter or grating adds the system that prism makes up.Said electrooptical device (7) is internal modulation photoelectric tube or the photosensitive alignment of internal modulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250013 CN2501036Y (en) | 2001-07-06 | 2001-07-06 | Parallel light focusing black-body cavity radiation thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250013 CN2501036Y (en) | 2001-07-06 | 2001-07-06 | Parallel light focusing black-body cavity radiation thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501036Y true CN2501036Y (en) | 2002-07-17 |
Family
ID=33660262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01250013 Expired - Fee Related CN2501036Y (en) | 2001-07-06 | 2001-07-06 | Parallel light focusing black-body cavity radiation thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2501036Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110216205A (en) * | 2019-07-05 | 2019-09-10 | 无锡德碳科技股份有限公司 | A kind of steel pipe intermediate frequency thermal expansion induction heating temperature automatic control system |
| CN110220613A (en) * | 2019-06-24 | 2019-09-10 | 南京师范大学 | A kind of sapphire pipe blackbody chamber optical fiber temperature-measurement device |
-
2001
- 2001-07-06 CN CN 01250013 patent/CN2501036Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110220613A (en) * | 2019-06-24 | 2019-09-10 | 南京师范大学 | A kind of sapphire pipe blackbody chamber optical fiber temperature-measurement device |
| CN110216205A (en) * | 2019-07-05 | 2019-09-10 | 无锡德碳科技股份有限公司 | A kind of steel pipe intermediate frequency thermal expansion induction heating temperature automatic control system |
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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 |