CN106768476A - Aluminum cell cathode steel bar temperature measurement on-line device and method - Google Patents
Aluminum cell cathode steel bar temperature measurement on-line device and method Download PDFInfo
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- CN106768476A CN106768476A CN201611262179.3A CN201611262179A CN106768476A CN 106768476 A CN106768476 A CN 106768476A CN 201611262179 A CN201611262179 A CN 201611262179A CN 106768476 A CN106768476 A CN 106768476A
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- temperature
- optical cable
- steel bar
- light
- cathode steel
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 81
- 239000003365 glass fiber Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000001069 Raman spectroscopy Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of aluminum cell cathode steel bar temperature measurement on-line device, the temperature measuring equipment electrically connected including remote supervisory and control(ling) equipment and with the remote supervisory and control(ling) equipment, guiding optical cable is connected with the temperature measuring equipment, temperature sensing optical cable is connected with the guiding optical cable, series connection is provided with least one temperature measuring unit on the temperature sensing optical cable, the temperature measuring unit include fixing shell and on the temperature sensing optical cable coiling set be close to aluminum cell cathode steel bar set and the optical cable ring as temperature-sensing element, the optical cable ring is located in the fixing shell, and filling is provided with glass fibre in the fixing shell.The invention also discloses aluminum cell cathode steel bar temperature measurement on-line method.Aluminum cell cathode steel bar temperature measurement on-line device and method of the invention, the on-line checking to aluminum cell cathode steel bar temperature can not only be realized, and can component constitute multiple spot distributed measurement, and there is high temperature resistant pressure, corrosion-resistant, electromagnetism interference and passive.
Description
Technical field
The invention belongs to temperature sensor technology field, specifically for a kind of aluminum cell cathode steel bar temperature measurement on-line device and
Method.
Background technology
The temperature of the shell temperature of aluminum electrolytic tank, particularly cathode steel bar is the important parameter in production run.By
Line detects cathode steel bar temperature, can be effectively prevented from the generation of the accidents such as bakie with real-time monitoring electrolytic cell operation conditions, extends
The service life of electrolytic cell, while for the analysis of electrolysis process provides effective reference data.
Cell workshop environmental characteristic substantially, mainly has：1）There is high-intensity magnetic field in scene, conditional electronic formula temperature sensor without
Method is used；2）Cathode steel bar extreme temperatures, generally more than 250 DEG C, requirement very high are proposed to temperature transducer.
The temperature detection method of traditional aluminum electrolytic tank cathode steel bar is carried out manually by survey tools such as instrument, instrument
Detection, although disclosure satisfy that use requirement to a certain extent, but still have the following disadvantages：
1）Infrared radiation thermometer is although simple to operate, but is easily failed under strong magnetic field circumstance, it is impossible to real time temperature measurement, also cannot be timely
Scent a hidden danger, additionally there are labor strength greatly, high temperature, the working environment of high-intensity magnetic field also drastically influence the body of workman
Health；
2）Although thermocouple can be used to measure high temperature, but be difficult to constitute multiple spot distributed measurement, in addition, the thermometric of thermocouple
Using electric signal measurement scheme, easily by electromagnetic interference, therefore do not applied on electrolytic cell；
3）According to wireless temperature measurement mode, although install simple, but still it is the principle of electric signal thermometric, easily by electromagnetic interference, surveys
The scope of temperature also can not meet the requirement of electrolytic aluminium.
Used as the key parameter for judging electrolytic cell body of heater health status, traditional approach is man-hour manually hand-held infrared temperature-measuring gun to temperature
Measure, this kind of method has larger monitoring time blind area, it is impossible to realize the continuous implementing monitoring of rod iron temperature.Therefore,
Traditional thermometric mode can not meet the special thermometric requirement of aluminum cell cathode steel bar, in the urgent need to a kind of new achievable continuous
The mode of thermometric.
The content of the invention
In view of this, it is an object of the invention to provide a kind of aluminum cell cathode steel bar temperature measurement on-line device and method,
Can not only realize the on-line checking to aluminum cell cathode steel bar temperature, and can component constitute multiple spot distributed measurement, and
There is high temperature resistant pressure, corrosion-resistant, electromagnetism interference and passive.
To reach above-mentioned purpose, the present invention provides following technical scheme：
Present invention firstly provides a kind of aluminum cell cathode steel bar temperature measurement on-line device, including remote supervisory and control(ling) equipment and with it is described
The temperature measuring equipment of remote supervisory and control(ling) equipment electrical connection, is connected with guiding optical cable on the temperature measuring equipment, connect on the guiding optical cable
Temperature sensing optical cable is equipped with, series connection is provided with least one temperature measuring unit on the temperature sensing optical cable, and the temperature measuring unit includes fixed outer
Shell and on the temperature sensing optical cable coiling set be close to aluminum cell cathode steel bar set and the optical cable as temperature-sensing element
Ring, the optical cable ring is located in the fixing shell, and filling is provided with glass fibre in the fixing shell；
The temperature measuring equipment is included for sending the light-pulse generator generator of light pulse signal, for being filtered place to optical signal
The wavelength division multiplexer of reason, the photodetector for carrying out photoelectric conversion to optical signal, the letter for gathering and processing electric signal
Number collection and processing unit and the power supply unit for powering, light pulse signal that the light-pulse generator generator sends is through described
Enter the guiding optical cable after wavelength division multiplexer, and answered through the wavelength-division through the backward Raman scattering light that the guiding optical cable enters
With the photodetector is entered after device filtering process, the electric signal obtained after being processed through the photodetector photoelectric conversion enters
Enter the Signal acquiring and processing unit.
Further, the temperature sensing optical cable is externally provided with high temperature resistant coat.
Further, the high temperature resistant coat is using polyimide coating layer.
Further, the guiding optical cable is single mode communication cable or multimode optical cable.
Further, the coiling of the optical cable ring is more than with diameter greater than equal to 60mm, and the coiling total length of the optical cable ring
Equal to 1.5m.
The invention allows for a kind of aluminium cell using aluminum cell cathode steel bar temperature measurement on-line device as described above
Cathode steel bar temperature measurement on-line method, the light-pulse generator generator sends light pulse signal, and the light pulse signal is through the ripple
Enter the guiding optical cable after division multiplexer filtering process and transmit to the temperature sensing optical cable, and light pulse signal is in the temperature-sensitive
Raman scattering is produced in optical cable, carry aluminum cell cathode steel bar temperature information backward Raman scattering light will along temperature sensing optical cable,
Guiding optical cable is transferred to the wavelength division multiplexer, is carried out into the photodetector after the wavelength division multiplexer filtering process
Photoelectric conversion treatment, the electric signal obtained through photodetector conversion enters line number into the Signal acquiring and processing unit
Word conversion processing, digital data transmission to the remote supervisory and control(ling) equipment obtained through the Signal acquiring and processing cell processing enters
Row demodulation process, and finally give the temperature data of each temperature measuring unit.
Further, remote supervisory and control(ling) equipment is solved to the data signal obtained through the Signal acquiring and processing cell processing
The method for mediating reason is as follows：Raman scattering includes stokes light and anti-Stokes light, and stokes light and anti-stoke
There is positive correlation with temperature field residing for the temperature sensing optical cable in the intensity of this light：
Wherein,I s It is the intensity of stokes light；I as It is the intensity of anti-Stokes light；It is the wavelength of stokes light sieve,It is the wavelength of anti-Stokes light；
hIt is Planck's constant,kIt is Boltzmann constant,CIt is the light velocity in vacuum,It is Raman frequency shift,TIt is absolute temperature；
The method compared using binary channels dual wavelength, i.e., be acquired respectively to stokes light and anti-Stokes light, is utilized
The ratio demodulation temperature signal of both intensity；Because anti-Stokes light is more sensitive to temperature, therefore by anti-Stokes light
Used as signalling channel, used as passage is compared, then strength ratio between the two is stokes light：
I.e.：
For demarcating temperature T0Have：
Then：。
Further, at least two are set in the temperature measuring unit and constitute distributed In-Line Temperature Measure System.
The beneficial effects of the present invention are：
Aluminum cell cathode steel bar temperature measurement on-line device and method of the present invention, needs for aluminium electrolytic cell cathode environmental quality and thermometric
Ask, using optical fiber temperature-measurement mode, solve high temperature and strong magnetic field circumstance thermometric integrity problem, realize the continuous real-time of temperature
Monitoring；
By being arranged in series at least one temperature measuring unit, the temperature monitoring of all aluminium electrolytic cell cathode electrode points is realized；It is online to survey
Warm device completes distributed temperature measuring mode to the conversion of point type thermometric mode, in the case where inherent spatial resolution is not changed
Ensure that the complete collection for zonule temperature；Meanwhile, it is cathode steel bar by setting fixing shell and filled glass fiber
Thermometric construct stabilization temperature field environment, it is ensured that temperature measurement data it is accurate and reliable, and for temperature sensing optical cable provide reliably
Encapsulation and safeguard protection, it is ensured that the service life of temp measuring system sensitivity original paper.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is the structural representation of aluminum cell cathode steel bar temperature measurement on-line device embodiment of the present invention；
Fig. 2 is the theory diagram of temperature measuring equipment；
Fig. 3 is the structural representation of temperature measuring unit；
Fig. 4 is the top view of Fig. 3.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in figure 1, being the structural representation of aluminum cell cathode steel bar temperature measurement on-line device embodiment of the present invention.This reality
Apply the aluminum cell cathode steel bar temperature measurement on-line device of example, including remote supervisory and control(ling) equipment 5 and electrically connected with remote supervisory and control(ling) equipment 5
Temperature measuring equipment 1, is connected with guiding optical cable 2 on temperature measuring equipment 1, temperature sensing optical cable 3, temperature sensing optical cable 3 are connected with guiding optical cable 2
Upper series connection is provided with least one temperature measuring unit 4, temperature measuring unit 4 include fixing shell 8 and on temperature sensing optical cable 3 coiling set with
Aluminum cell cathode steel bar is close to set and the optical cable ring 6 as temperature-sensing element, and optical cable ring 6 is located in fixing shell 8, and fixed
Filling is provided with glass fibre 7 in shell 8.Wherein, guiding optical cable 2 is single mode communication cable or multimode optical cable, and the present embodiment draws
Light guide cable 2 is single mode communication cable.
Specifically, the temperature sensing optical cable 3 of the present embodiment is externally provided with high temperature resistant coat, and high temperature resistant coat is sub- using polyamides
Amine coat.High temperature resistant coat is externally provided with by temperature sensing optical cable 3, it is ensured that temperature sensing optical cable 3 is in 300 DEG C of -350 DEG C of temperature
Long-term work under degree environment, and the short-term operation under 400 DEG C of temperature environments, temperature sensing optical cable 3 can be in 300 DEG C of -350 DEG C of temperature rings
Can ensure to use more than 5 years under border, the use requirement of aluminum cell cathode steel bar hot environment, Er Qieneng can not only be met
Enough effectively improve service life.
Further, the coiling of optical cable ring is more than or equal to diameter greater than equal to 60mm, and the coiling total length of optical cable ring
1.5m, the coiling diameter of the optical cable ring of the present embodiment is equal to 75mm, and the coiling total length of optical cable ring is more than or equal to 2m.Can have
Effect ensures in intrinsic spatial discrimination（Generally 1m）Under single-point thermometric effect, and by limiting the coiling diameter of optical cable ring, can
To prevent temperature sensing optical cable 3 from occurring damaging.
The temperature measuring equipment 1 of the present embodiment is included for sending the light-pulse generator generator 9 of light pulse signal, for believing light
Number be filtered the wavelength division multiplexer 10 for the treatment of, the photodetector 11 for carrying out photoelectric conversion to optical signal, for gathering
With the Signal acquiring and processing unit 12 for the treatment of electric signal and power supply unit 13 for powering, light-pulse generator generator sends
Light pulse signal enters guiding optical cable after wavelength division multiplexer, and the backward Raman scattering light that channeled optical cable enters is multiple through wavelength-division
With photodetector is entered after device filtering process, the electric signal entering signal obtained after being processed through photodetector photoelectric conversion is adopted
Collection and processing unit.
Specifically, aluminum cell cathode steel bar of the present embodiment using above-mentioned aluminum cell cathode steel bar temperature measurement on-line device
Temperature measurement on-line method is as follows：Light-pulse generator generator sends light pulse signal, and light pulse signal is through wavelength division multiplexer filtering process
Enter guiding optical cable afterwards and transmit to temperature sensing optical cable, and light pulse signal produces Raman scattering in temperature sensing optical cable, carries aluminium electricity
The backward Raman scattering light for solving groove cathode steel bar temperature information will be transferred to wavelength division multiplexer along temperature sensing optical cable, guiding optical cable, pass through
Photoelectric conversion treatment is carried out into photodetector after wavelength division multiplexer filtering process, through the telecommunications that photodetector conversion is obtained
The collection of number entering signal carries out digital conversion processing with processing unit, the numeral letter obtained through Signal acquiring and processing cell processing
Number transmit to remote supervisory and control(ling) equipment and to be demodulated treatment, and finally give the temperature data of each temperature measuring unit.
Further, remote supervisory and control(ling) equipment is demodulated place to the data signal obtained through Signal acquiring and processing cell processing
The method of reason is as follows：Raman scattering includes stokes light and anti-Stokes light, and stokes light and anti-Stokes light
Intensity there is positive correlation with temperature field residing for temperature sensing optical cable：
Wherein,I s It is the intensity of stokes light；I as It is the intensity of anti-Stokes light；It is the wavelength of stokes light sieve,It is the wavelength of anti-Stokes light；
hIt is Planck's constant,kIt is Boltzmann constant,CIt is the light velocity in vacuum,It is Raman frequency shift,TIt is absolute temperature；
The method compared using binary channels dual wavelength, i.e., be acquired respectively to stokes light and anti-Stokes light, is utilized
The ratio demodulation temperature signal of both intensity；Because anti-Stokes light is more sensitive to temperature, therefore by anti-Stokes light
Used as signalling channel, used as passage is compared, then strength ratio between the two is stokes light：
I.e.：
For demarcating temperature T0Have：
Then：。
Further, at least two are set in temperature measuring unit 4 and constitute distributed In-Line Temperature Measure System, this implementation
The temperature measuring unit 4 of example is set to one every 1m, to realize carrying out aluminum cell cathode steel bar the skill of distributed temperature measurement on-line
Art purpose.
The present embodiment aluminum cell cathode steel bar temperature measurement on-line device and method, for aluminium electrolytic cell cathode environmental quality and
Thermometric demand, using optical fiber temperature-measurement mode, solves high temperature and strong magnetic field circumstance thermometric integrity problem, realizes the company of temperature
Continuous real-time monitoring；By being arranged in series at least one temperature measuring unit, the temperature monitoring of all aluminium electrolytic cell cathode electrode points is realized；
Temperature measurement on-line device completes distributed temperature measuring mode to the conversion of point type thermometric mode, is not changing inherent spatial resolution
In the case of ensure that complete collection for zonule temperature；Meanwhile, it is cloudy by setting fixing shell and filled glass fiber
Pole rod iron thermometric constructs the temperature field environment of stabilization, it is ensured that temperature measurement data it is accurate and reliable, and for temperature sensing optical cable is provided
Relieved package and safeguard protection, it is ensured that the service life of temp measuring system sensitivity original paper.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the present invention, protection model of the invention
Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (8)
1. a kind of aluminum cell cathode steel bar temperature measurement on-line device, it is characterised in that：It is including remote supervisory and control(ling) equipment and remote with described
The temperature measuring equipment of range monitoring equipment electrical connection, is connected with guiding optical cable on the temperature measuring equipment, connected on the guiding optical cable
Temperature sensing optical cable is provided with, series connection is provided with least one temperature measuring unit on the temperature sensing optical cable, and the temperature measuring unit includes fixing shell
Set and optical cable ring as temperature-sensing element with being close to aluminum cell cathode steel bar of setting of the coiling on the temperature sensing optical cable,
The optical cable ring is located in the fixing shell, and filling is provided with glass fibre in the fixing shell；
The temperature measuring equipment is included for sending the light-pulse generator generator of light pulse signal, for being filtered place to optical signal
The wavelength division multiplexer of reason, the photodetector for carrying out photoelectric conversion to optical signal, the letter for gathering and processing electric signal
Number collection and processing unit and the power supply unit for powering, light pulse signal that the light-pulse generator generator sends is through described
Enter the guiding optical cable after wavelength division multiplexer, and answered through the wavelength-division through the backward Raman scattering light that the guiding optical cable enters
With the photodetector is entered after device filtering process, the electric signal obtained after being processed through the photodetector photoelectric conversion enters
Enter the Signal acquiring and processing unit.
2. aluminum cell cathode steel bar temperature measurement on-line device according to claim 1, it is characterised in that：The temperature sensing optical cable
It is externally provided with high temperature resistant coat.
3. aluminum cell cathode steel bar temperature measurement on-line device according to claim 2, it is characterised in that：The high temperature resistant is applied
Coating is using polyimide coating layer.
4. aluminum cell cathode steel bar temperature measurement on-line device according to claim 1, it is characterised in that：The guiding optical cable
It is single mode communication cable or multimode optical cable.
5. the aluminum cell cathode steel bar temperature measurement on-line device according to claim any one of 1-4, it is characterised in that：It is described
The coiling of optical cable ring is with diameter greater than equal to 60mm, and the coiling total length of the optical cable ring is more than or equal to 1.5m.
6. a kind of aluminium cell using the aluminum cell cathode steel bar temperature measurement on-line device as described in claim any one of 1-5 is cloudy
Pole rod iron temperature measurement on-line method, it is characterised in that：The light-pulse generator generator sends light pulse signal, the light pulse signal
Enter the guiding optical cable after the wavelength division multiplexer filtering process and transmit to the temperature sensing optical cable, and light pulse signal and exist
Raman scattering is produced in the temperature sensing optical cable, the backward Raman scattering light for carrying aluminum cell cathode steel bar temperature information will be along sense
Warm optical cable, guiding optical cable are transferred to the wavelength division multiplexer, and the smooth electrical resistivity survey is entered after the wavelength division multiplexer filtering process
Surveying device carries out photoelectric conversion treatment, and the electric signal obtained through photodetector conversion enters the Signal acquiring and processing list
Unit carries out digital conversion processing, the digital data transmission obtained through the Signal acquiring and processing cell processing to the long-range prison
Control equipment is demodulated treatment, and finally gives the temperature data of each temperature measuring unit.
7. aluminum cell cathode steel bar temperature measurement on-line method according to claim 6, it is characterised in that：Remote supervisory and control(ling) equipment pair
The method that the data signal obtained through the Signal acquiring and processing cell processing is demodulated treatment is as follows：Raman scattering includes
Stokes light and anti-Stokes light, and stokes light and anti-Stokes light intensity with residing for the temperature sensing optical cable
There is positive correlation in temperature field：
Wherein,I s It is the intensity of stokes light；I as It is the intensity of anti-Stokes light；It is the wavelength of stokes light sieve,
It is the wavelength of anti-Stokes light；
hIt is Planck's constant,kIt is Boltzmann constant,CIt is the light velocity in vacuum,It is Raman frequency shift,TIt is absolute temperature；
The method compared using binary channels dual wavelength, i.e., be acquired respectively to stokes light and anti-Stokes light, is utilized
The ratio demodulation temperature signal of both intensity；Because anti-Stokes light is more sensitive to temperature, therefore by anti-Stokes light
Used as signalling channel, used as passage is compared, then strength ratio between the two is stokes light：
I.e.：
For demarcating temperature T0Have：
Then：。
8. aluminum cell cathode steel bar temperature measurement on-line method according to claim 6, it is characterised in that：In the temperature measuring unit
It is set at least two and constitutes distributed In-Line Temperature Measure System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611262179.3A CN106768476A (en) | 2016-12-30 | 2016-12-30 | Aluminum cell cathode steel bar temperature measurement on-line device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611262179.3A CN106768476A (en) | 2016-12-30 | 2016-12-30 | Aluminum cell cathode steel bar temperature measurement on-line device and method |
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| CN106768476A true CN106768476A (en) | 2017-05-31 |
Family
ID=58954914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611262179.3A Pending CN106768476A (en) | 2016-12-30 | 2016-12-30 | Aluminum cell cathode steel bar temperature measurement on-line device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029757A (en) * | 2018-08-16 | 2018-12-18 | 云南卓烁科技有限公司 | A kind of aluminium cell temperature acquisition system |
| CN112033566A (en) * | 2020-07-14 | 2020-12-04 | 中铝智能科技发展有限公司 | Distributed optical fiber temperature measurement system for aluminum electrolysis cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07280664A (en) * | 1994-04-04 | 1995-10-27 | Kobe Steel Ltd | Temperature measurement method |
| CN101586989A (en) * | 2009-07-10 | 2009-11-25 | 山东大学 | Fiber grating temperature sensor for electrolytic bath shell |
| CN101713689A (en) * | 2009-11-13 | 2010-05-26 | 太原市电子研究设计院 | Temperature-measuring system of distributed fibers |
| CN202648832U (en) * | 2012-07-02 | 2013-01-02 | 昆明理工大学 | Fiber Bragg grating temperature sensor for measuring temperature of electrolytic bath |
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
-
2016
- 2016-12-30 CN CN201611262179.3A patent/CN106768476A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07280664A (en) * | 1994-04-04 | 1995-10-27 | Kobe Steel Ltd | Temperature measurement method |
| CN101586989A (en) * | 2009-07-10 | 2009-11-25 | 山东大学 | Fiber grating temperature sensor for electrolytic bath shell |
| CN101713689A (en) * | 2009-11-13 | 2010-05-26 | 太原市电子研究设计院 | Temperature-measuring system of distributed fibers |
| CN202648832U (en) * | 2012-07-02 | 2013-01-02 | 昆明理工大学 | Fiber Bragg grating temperature sensor for measuring temperature of electrolytic bath |
| CN105135215A (en) * | 2015-06-26 | 2015-12-09 | 中国石油化工股份有限公司胜利油田分公司 | Leakage detection device for oil collecting pipeline with optical fiber method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029757A (en) * | 2018-08-16 | 2018-12-18 | 云南卓烁科技有限公司 | A kind of aluminium cell temperature acquisition system |
| CN112033566A (en) * | 2020-07-14 | 2020-12-04 | 中铝智能科技发展有限公司 | Distributed optical fiber temperature measurement system for aluminum electrolysis cell |
| CN112033566B (en) * | 2020-07-14 | 2022-04-08 | 中铝智能科技发展有限公司 | Distributed optical fiber temperature measurement system for aluminum electrolysis cell |
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Application publication date: 20170531 |