CN113804312A - Radiation measuring tube for eliminating lambda waveband interference signals based on material method - Google Patents
Radiation measuring tube for eliminating lambda waveband interference signals based on material method Download PDFInfo
- Publication number
- CN113804312A CN113804312A CN202111157278.6A CN202111157278A CN113804312A CN 113804312 A CN113804312 A CN 113804312A CN 202111157278 A CN202111157278 A CN 202111157278A CN 113804312 A CN113804312 A CN 113804312A
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- Prior art keywords
- radiation
- lambda
- measuring tube
- infrared
- radiation measuring
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- 230000005855 radiation Effects 0.000 title claims abstract description 70
- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0044—Furnaces, ovens, kilns
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention relates to the field of thermal measurement, in particular to a radiation measuring tube for eliminating lambda waveband interference signals based on a material method, which comprises a radiation measuring tube arranged inside a furnace wall and a temperature measuring instrument arranged outside the furnace wall, wherein one end of the radiation measuring tube, which is far away from the inside of a furnace, is provided with a diaphragm matched and connected with the input end of the temperature measuring instrument, an infrared window material layer, a low-radiation material layer and a measuring outer tube layer are sequentially arranged on the tube body of the radiation measuring tube along the radial direction, one end of the radiation measuring tube, which is close to an object to be measured, is provided with a light shield, and the tube wall of the radiation measuring tube, which is close to the inner wall of the furnace wall, is provided with a pressure relief port, so that the effective infrared radiation signal ratio of a target is increased by reducing radiation interference signals, and the measurement precision is improved.
Description
Technical Field
The invention relates to the field of thermal measurement, in particular to a radiation measuring tube for eliminating lambda waveband interference signals based on a material method.
Background
Smooth metal moving in a high temperature furnace, such as a continuous annealing furnace, needs to solve two problems in the radiation temperature measurement process: firstly, emissivity compensation of a target is accurately calculated, secondly, background radiation noise of a furnace is eliminated, a single-waveband infrared thermometer is installed outside the furnace, according to characteristics and a temperature range of the target, the working wavelength of the single-waveband infrared thermometer is selected to be lambda, namely, a radiation signal of the lambda waveband is detected to measure the temperature of a target object, the noise radiation in the furnace is increased along with the increase of the temperature of the furnace, the noise radiation is full-waveband noise radiation and certainly comprises interference radiation of the lambda waveband, the proportion of the interference radiation is further increased along with the change of the temperature, and if the interference signal of the waveband is not processed, the temperature signal output by a detector comprises the interference signal, and the temperature measurement accuracy is greatly reduced.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a eliminate radiation survey buret of lambda wave band interfering signal based on material method, sets up in the inside radiation survey buret of furnace wall and sets up in the outside thermoscope of furnace wall including the installation, the one end that radiation survey buret kept away from in the stove is equipped with the diaphragm of being connected with the thermoscope input cooperation, radiation survey buret body sets gradually infrared window material layer, low radiation material layer and measures the outer pipe layer along radial, radiation survey buret is close to the object one end that awaits measuring and is equipped with the lens hood, radiation survey buret is close to furnace wall inner wall one side pipe wall and is equipped with the pressure release mouth.
As an improvement, the thermometer is a single-band infrared thermometer.
As an improvement, the two ends of the radiation measuring tube are sealed by infrared materials, and the infrared materials are made of sapphire glass.
As an improvement, the infrared window material layer is made of an infrared material, and the infrared material is made of high-temperature-resistant quartz glass.
As an improvement, the wavelength receiving range of the infrared window material layer arranged on the inner wall of the radiation measuring tube is lambda 1-lambda 2, the working wavelength of the thermodetector is lambda > lambda 2 or lambda < lambda 1, and only radiation noise in a lambda 1-lambda 2 wave band and a radiation signal of a target object exist in a measuring channel.
As an improvement, the material of the low-emissivity material is a low-emissivity material which can effectively reduce radiation interference signals in the measuring pipe passage.
After adopting the structure, the invention has the following advantages:
by reducing the radiation interference signal, the effective infrared radiation signal ratio of the target is increased, thereby improving the measurement precision.
Drawings
FIG. 1 is a schematic view of a radiation measuring tube in use;
FIG. 2 is a graph of the wavelength measurement range of the inner wall of the measurement tube.
As shown in fig. 1: 1. the radiation measuring tube comprises a radiation measuring tube body 101, an outer measuring tube layer 102, a low-radiation material layer 103, an infrared window material layer 104, a pressure relief opening 105, a light shield 2, a temperature measuring instrument 3, a diaphragm 4, a furnace wall 5 and an object to be measured.
Detailed Description
With reference to the attached drawings 1-2, a radiation measuring tube for eliminating lambda band interference signals based on a material method comprises a radiation measuring tube 1 arranged inside a furnace wall and a temperature measuring instrument 2 arranged outside the furnace wall, wherein a diaphragm 3 matched and connected with the input end of the temperature measuring instrument 2 is arranged at one end, far away from the inside, of the radiation measuring tube 1, an infrared window material layer 103, a low radiation material layer 102 and a measuring outer tube layer 101 are sequentially arranged on a tube body of the radiation measuring tube 1 along the radial direction, a light shield 105 is arranged at one end, close to an object to be measured 5, of the radiation measuring tube 1, and a pressure relief opening 104 is formed in the tube wall of one side, close to the inner wall 4, of the radiation measuring tube 1.
As a preferred embodiment of this embodiment, the temperature measuring instrument 2 is a single-band infrared temperature measuring instrument.
In a preferred embodiment of the present embodiment, both ends of the radiation measuring tube 1 are sealed by an infrared material, and the infrared material is made of sapphire glass.
As a preferred embodiment of this embodiment, the infrared window material layer 103 is made of an infrared material, and the material of the infrared material is high temperature resistant quartz glass.
In a preferred embodiment of the present embodiment, the wavelength receiving range λ 1- λ 2 of the infrared window material layer 103 disposed on the inner wall of the radiation measuring tube 1, the operating wavelength λ > λ 2 or λ < λ 1 of the thermometer 2, the radiation noise of only λ 1- λ 2 band in the measuring path, and the radiation signal of the target object are provided.
In a preferred embodiment of this embodiment, the material of the low-emissivity material layer 102 is selected to be a low-emissivity material that is effective to reduce radiation interference signals in the measuring tube passage.
When the method is implemented specifically, firstly, the infrared material on the inner wall of the measuring tube is selected, so that the working wavelength lambda of the temperature measuring instrument is not within the window range lambda 1-lambda 2 of the infrared material on the inner wall of the measuring tube, and fig. 2 shows the window range lambda 1-lambda 2 of the inner wall of the measuring tube, namely, in the interference radiation in the furnace, only the radiation with the wavelength within the range lambda 1-lambda 2 can be detected by the detector through the measuring tube, other wavelengths cannot be detected by the measuring tube, and the detector is only sensitive to the lambda waveband, so that the measuring tube plays a role in shielding the interference radiation in the furnace, and the effective radiation signal passing through a measuring passage only has a target radiation signal of the lambda waveband.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides an eliminate radiation measuring pipe of lambda wave band interfering signal based on material method, sets up radiation measuring pipe (1) inside the furnace wall and sets up in outside thermoscope (2) of furnace wall including the installation, radiation measuring pipe (1) is kept away from one end in the stove and is equipped with diaphragm (3) of being connected with thermoscope (2) input cooperation, its characterized in that: radiation survey buret (1) body sets gradually infrared window material layer (103), low radiation material layer (102) and measures outer pipe layer (101) along radial, radiation survey buret (1) is close to object to be measured (5) one end and is equipped with lens hood (105), radiation survey buret (1) is close to furnace wall (4) inner wall one side pipe wall and is equipped with pressure release mouth (104).
2. The radiation measuring tube based on material method for eliminating interference signal of lambda band as claimed in claim 1, wherein: the temperature measuring instrument (2) is a single-waveband infrared temperature measuring instrument.
3. The radiation measuring tube based on material method for eliminating interference signal of lambda band as claimed in claim 1, wherein: the two ends of the radiation measuring pipe (1) are sealed by infrared materials, and the infrared materials are made of sapphire glass.
4. The radiation measuring tube based on material method for eliminating interference signal of lambda band as claimed in claim 1, wherein: the infrared window material layer (103) is made of an infrared material, and the infrared material is made of high-temperature-resistant quartz glass.
5. The radiation measuring tube based on material method for eliminating interference signal of lambda band as claimed in claim 1, wherein: the wavelength receiving range of the infrared window material layer (103) arranged on the inner wall of the radiation measuring tube (1) is lambda 1-lambda 2, the working wavelength lambda of the thermodetector (2) is more than lambda 2 or lambda is less than lambda 1, and only radiation noise of lambda 1-lambda 2 wave bands and radiation signals of a target object exist in a measuring passage.
6. The radiation measuring tube based on material method for eliminating interference signal of lambda band as claimed in claim 1, wherein: the low-radiation material layer (102) is made of a low-emissivity material capable of effectively reducing radiation interference signals in the measuring pipe passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157278.6A CN113804312A (en) | 2021-09-30 | 2021-09-30 | Radiation measuring tube for eliminating lambda waveband interference signals based on material method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157278.6A CN113804312A (en) | 2021-09-30 | 2021-09-30 | Radiation measuring tube for eliminating lambda waveband interference signals based on material method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113804312A true CN113804312A (en) | 2021-12-17 |
Family
ID=78939116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111157278.6A Pending CN113804312A (en) | 2021-09-30 | 2021-09-30 | Radiation measuring tube for eliminating lambda waveband interference signals based on material method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113804312A (en) |
-
2021
- 2021-09-30 CN CN202111157278.6A patent/CN113804312A/en active Pending
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Application publication date: 20211217 |
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| WD01 | Invention patent application deemed withdrawn after publication |