CN204027702U - The blackbody cavity structure of blackbody radiation source - Google Patents
The blackbody cavity structure of blackbody radiation source Download PDFInfo
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- CN204027702U CN204027702U CN201420347221.1U CN201420347221U CN204027702U CN 204027702 U CN204027702 U CN 204027702U CN 201420347221 U CN201420347221 U CN 201420347221U CN 204027702 U CN204027702 U CN 204027702U
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- Prior art keywords
- blackbody
- nitrogen
- cavity
- chamber
- interlayer
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- 230000005457 Black-body radiation Effects 0.000 title claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 136
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 67
- 239000011229 interlayer Substances 0.000 claims abstract description 24
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 11
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 abstract description 8
- 238000009833 condensation Methods 0.000 abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a kind of blackbody cavity structure of blackbody radiation source, comprise blackbody cavity, high pressure purity nitrogen source of the gas, the spiral type pipe of precooling nitrogen, cryogenic liquid medium, for inserting the isothermal block of standard platinum resistance thermometer, the nitrogen interlayer of blackbody chamber, blackbody cavity is built-in with the isothermal block for inserting standard platinum resistance thermometer, blackbody cavity skin is provided with the nitrogen interlayer of blackbody chamber, the nitrogen interlayer of blackbody chamber is communicated with blackbody cavity, the nitrogen interlayer of blackbody chamber connects high pressure purity nitrogen source of the gas by the spiral type pipe of precooling nitrogen, and blackbody cavity and isothermal block, the nitrogen interlayer of blackbody chamber, the spiral type pipe of precooling nitrogen is all placed in the cryogenic liquid medium of calibration cell.This novel blackbody radiation source completely eliminates frosting below-10 DEG C, condensation and fog phenomenon, substantially increases the accuracy for examining and determine or calibrating.This is a kind of breakthrough in blackbody cavity technical field.Completely avoid the generation of frosting that cavity occurs below-10 DEG C, condensation and fog phenomenon.
Description
Technical field
The utility model relates to calibrating or correcting device, particularly a kind of blackbody radiation source with Novel air cavity configuration of a kind of standard and precision.
Background technology
Along with the progress of infrared technique and detector technology, emerged a large amount of low-temp radiating thermometers in recent years, its minimum measuring tempeature can reach-80 ~ 100 DEG C, thus the corresponding blackbody radiation source examined and determine them or calibrate also rolls up.When carrying out examining and determine or calibrating below-10 DEG C, blackbody cavity inside can produce frosting, condensation and fog phenomenon, this phenomenon can change the slin emissivity of cavity inner wall to a great extent and produce Absorption of Medium, cause the effective emissivity of cavity bottom obviously to reduce, become a main uncertainty source.
Summary of the invention
The utility model be occur below-10 DEG C for existing cavity frosting, condensation and fog phenomenon problem, propose a kind of blackbody cavity structure with the blackbody radiation source of new structure, effectively solve this long-term unsolved technical matters, the generation of frosting, condensation and fog phenomenon can be avoided completely, substantially increase the accuracy of calibrating or calibration.
For achieving the above object, the technical solution of the utility model is: a kind of blackbody cavity structure of blackbody radiation source, comprise blackbody cavity, high pressure purity nitrogen source of the gas, the spiral type pipe of precooling nitrogen, cryogenic liquid medium, for inserting the isothermal block of standard platinum resistance thermometer, the nitrogen interlayer of blackbody chamber, be characterized in: blackbody cavity is built-in with the isothermal block for inserting standard platinum resistance thermometer, blackbody cavity skin is provided with the nitrogen interlayer of blackbody chamber, the nitrogen interlayer of blackbody chamber is communicated with blackbody cavity, the nitrogen interlayer of blackbody chamber connects high pressure purity nitrogen source of the gas by the spiral type pipe of precooling nitrogen, and blackbody cavity and isothermal block, the nitrogen interlayer of blackbody chamber, the spiral type pipe of precooling nitrogen is all placed in the cryogenic liquid medium of calibration cell.
The needle-valve inputting nitrogen for regulation and control is connected with between the spiral type pipe of high pressure purity nitrogen source of the gas and precooling nitrogen.The nitrogen interlayer outboard end of blackbody chamber is provided with and nitrogen is spread toward black matrix accent bottom blackbody chamber, enters the blackbody chamber nitrogen inlet in blackbody cavity, be provided with blackbody chamber nitrogen delivery outlet below the inner, inner side with blocks air.
The beneficial effects of the utility model are: the novel black matrix cavity structure of blackbody radiation source of the present utility model, cavity inside is formed by water vapour below-10 DEG C frosting, condensation, fog phenomenon are eliminated in its effect completely, thus substantially increase the accuracy of cavity blackbody radiation.The cavity structure that application is unique, when blackbody radiation source works below-10 DEG C, pure nitrogen gas can input cavity be inner continuously, to disperse the air with water vapor being present in cavity inside, makes nitrogen take whole spaces in chamber.Under state that is stable and that balance, under cavity inside is still in an atmospheric pressure.Because nitrogen input flow rate is sufficiently little and keep constant, thus it can not affect the warm field distribution of cavity inside, thus ensure that blackbody radiation source is for the accuracy of examining and determine or calibrating and reliability.
This novel blackbody radiation source completely eliminates frosting below-10 DEG C, condensation and fog phenomenon, substantially increases the accuracy for examining and determine or calibrating.This is a kind of breakthrough in blackbody cavity technical field.Completely avoid the generation of frosting that cavity occurs below-10 DEG C, condensation and fog phenomenon.
Accompanying drawing explanation
Fig. 1 is the blackbody cavity structural representation of blackbody radiation source of the present utility model.
Embodiment
The utility model is described in further detail for Structure Figure and embodiment below.
As shown in Figure 1, a kind of blackbody cavity structure of blackbody radiation source is a calibration cell with novel blackbody cavity.It supplies pure nitrogen gas System's composition by one.It comprises blackbody cavity 1, high pressure purity nitrogen source of the gas 8, the spiral type pipe 6 of precooling nitrogen, cryogenic liquid medium 7, and for inserting the isothermal block 5 of standard platinum resistance thermometer, the nitrogen interlayer 2 of blackbody chamber, for the needle-valve 9 of regulation and control input nitrogen.
Blackbody cavity 1 is built-in with the isothermal block 5 for inserting standard platinum resistance thermometer, blackbody cavity 1 skin is provided with the nitrogen interlayer 2 of blackbody chamber, the nitrogen interlayer 2 of blackbody chamber is communicated with blackbody cavity 1, the nitrogen interlayer 2 of blackbody chamber connects high pressure purity nitrogen source of the gas 8 by the spiral type pipe 6 of precooling nitrogen, and blackbody cavity 1 and isothermal block (5), the nitrogen interlayer 2 of blackbody chamber, the spiral type pipe 6 of precooling nitrogen are all placed in the cryogenic liquid medium 7 of calibration cell.The needle-valve 9 inputting nitrogen for regulation and control is connected with between high pressure purity nitrogen source of the gas 8 and the spiral type pipe 6 of precooling nitrogen.Nitrogen interlayer 2 outboard end of blackbody chamber is provided with and nitrogen is spread toward black matrix accent bottom blackbody chamber 1, enters the blackbody chamber nitrogen inlet 3 in blackbody cavity 1, be provided with blackbody chamber nitrogen delivery outlet 4 below the inner, inner side with blocks air.
Precooling spiral type pipe 6 makes the temperature of the temperature of the nitrogen of input cavity and cryogenic liquid medium be consistent.For inserting the isothermal block 5 of standard platinum resistance, the Temperature displaying value of platinum resistance and the temperature of cavity bottom are consistent.The nitrogen interlayer 2 of blackbody chamber can improve the warm field uniformity of cavity inside, thus improves the emissivity of blackbody cavity.Needle-valve 9 can carry out fine adjustments to input nitrogen amount and ensure the constant of input flow rate.
Having certain thickness blackbody cavity isothermal block 5 is immersed in cryogenic liquid medium 7, to ensure to insert the consistance of standard platinum resistance institute's temp. displaying function in isothermal block 5 and cavity bottom temperature.
Claims (3)
1. the blackbody cavity structure of a blackbody radiation source, comprise blackbody cavity (1), high pressure purity nitrogen source of the gas (8), the spiral type pipe (6) of precooling nitrogen, cryogenic liquid medium (7), for inserting the isothermal block (5) of standard platinum resistance thermometer, the nitrogen interlayer (2) of blackbody chamber, it is characterized in that: blackbody cavity (1) is built-in with the isothermal block (5) for inserting standard platinum resistance thermometer, blackbody cavity (1) skin is provided with the nitrogen interlayer (2) of blackbody chamber, the nitrogen interlayer (2) of blackbody chamber is communicated with blackbody cavity (1), the nitrogen interlayer (2) of blackbody chamber connects high pressure purity nitrogen source of the gas (8) by the spiral type pipe (6) of precooling nitrogen, and blackbody cavity (1) and isothermal block (5), the nitrogen interlayer (2) of blackbody chamber, the spiral type pipe (6) of precooling nitrogen is all placed in the cryogenic liquid medium (7) of calibration cell.
2. the blackbody cavity structure of blackbody radiation source according to claim 1, is characterized in that: be connected with the needle-valve (9) inputting nitrogen for regulation and control between the spiral type pipe (6) of high pressure purity nitrogen source of the gas (8) and precooling nitrogen.
3. the blackbody cavity structure of blackbody radiation source according to claim 1, it is characterized in that: nitrogen interlayer (2) outboard end of blackbody chamber is provided with and makes nitrogen from blackbody chamber (1) bottom toward the diffusion of black matrix accent, enter the blackbody chamber nitrogen inlet (3) in blackbody cavity (1) with blocks air, below the inner, inner side, be provided with blackbody chamber nitrogen delivery outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347221.1U CN204027702U (en) | 2014-06-27 | 2014-06-27 | The blackbody cavity structure of blackbody radiation source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347221.1U CN204027702U (en) | 2014-06-27 | 2014-06-27 | The blackbody cavity structure of blackbody radiation source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204027702U true CN204027702U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420347221.1U Expired - Fee Related CN204027702U (en) | 2014-06-27 | 2014-06-27 | The blackbody cavity structure of blackbody radiation source |
Country Status (1)
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| CN (1) | CN204027702U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019903A (en) * | 2014-06-27 | 2014-09-03 | 上海量值测控仪器科技有限公司 | Black body cavity structure of black body radiation source |
| CN106092324A (en) * | 2016-05-27 | 2016-11-09 | 北京环境特性研究所 | A kind of antifrost device for source, low temperature face black matrix |
| CN113108923A (en) * | 2021-04-15 | 2021-07-13 | 广东省计量科学研究院（华南国家计量测试中心） | Radiation blackbody cavity with micro-groove group structure and water-groove type blackbody radiation source |
| CN113465748A (en) * | 2021-07-16 | 2021-10-01 | 衢州学院 | Blackbody cavity temperature sensor with stable emissivity |
-
2014
- 2014-06-27 CN CN201420347221.1U patent/CN204027702U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019903A (en) * | 2014-06-27 | 2014-09-03 | 上海量值测控仪器科技有限公司 | Black body cavity structure of black body radiation source |
| CN106092324A (en) * | 2016-05-27 | 2016-11-09 | 北京环境特性研究所 | A kind of antifrost device for source, low temperature face black matrix |
| CN113108923A (en) * | 2021-04-15 | 2021-07-13 | 广东省计量科学研究院（华南国家计量测试中心） | Radiation blackbody cavity with micro-groove group structure and water-groove type blackbody radiation source |
| CN113108923B (en) * | 2021-04-15 | 2022-03-01 | 广东省计量科学研究院（华南国家计量测试中心） | Radiation blackbody cavity with micro-groove group structure and water-groove type blackbody radiation source |
| CN113465748A (en) * | 2021-07-16 | 2021-10-01 | 衢州学院 | Blackbody cavity temperature sensor with stable emissivity |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |