CN106755683A - A kind of blast-furnace roasting band temperature field detection device based on colorimetric method - Google Patents
A kind of blast-furnace roasting band temperature field detection device based on colorimetric method Download PDFInfo
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- CN106755683A CN106755683A CN201610987060.6A CN201610987060A CN106755683A CN 106755683 A CN106755683 A CN 106755683A CN 201610987060 A CN201610987060 A CN 201610987060A CN 106755683 A CN106755683 A CN 106755683A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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Abstract
A kind of blast-furnace roasting band temperature field detection device based on colorimetric method.Detection means includes beam splitting system, acquisition system, Transmission system, image storage display system, data analysis and processing system.Its main feature is utilized in CCD industrial cameras front end and installs narrow-band pass filter, obtain the radiation image of Single wavelength, the algorithm that pretreatment, the calibration curve of blackbody furnace, improved colorimetric method computation model, post processing etc. reduce calculation error is added in data handling, effectively raises the accuracy of calculating and the sensitivity of detection.The set detection means can in real time show the important informations such as blast-furnace roasting band coal dust firing operating mode and thermo parameters method, for adjustment conditions of blast furnace, energy-saving and emission-reduction, upgrading synergy, stable smooth operation provide sound assurance in time.This device substantially increases the informationization of blast furnace, intelligent level simultaneously, effectively alleviates the working strength of operator, and significantly reduce production cost.
Description
Technical field
The present invention relates to the blast-furnace roasting band temperature field detection device that metallurgical industry is used, for real-time detection blast-furnace roasting
The thermo parameters method of band.
Background technology
Blast-furnace roasting band is the cradle of blast furnace heat and coal gas, and the initial gas fluid distrbution of blast furnace is had a major impact, and is
Determine blast-melted quality, blast furnace melting with soft height and shape, the important parameter of blast furnace crucibe activity.The temperature field of combustion zone
Distribution can judge that thermal system, the quality of molten steel quality, the length of smelting cycle provide important reference frame for blast furnace, while
It is also to judge coal dust firing state, the important foundation of energy-saving and emission-reduction.Therefore the temperature of blast-furnace roasting band is effectively accurately detected in real time
Degree field distribution has great importance to ensureing blast furnace stable smooth operation, production high-quality molten iron, energy-saving and emission-reduction, upgrading synergy.
At present, the Iron and Steel Research Geueral Inst, Wuhan steel of some smelters of external such as Japan, the U.S., South Korea, and the country
The units such as Inland Steel, Ma Gang, Shoudu Iron and Steel Co successively set air port detector in blast-furnace tuyere, are photographed air port video camera by optical fiber
Image transmitting to blast furnace operating room detecting the coal dust firing situation of blast-furnace tuyere.But filled because existing blast-furnace tuyere is detected
Put configuration simple, it is impossible to obtain accurate blast-furnace roasting band thermo parameters method
For this problem, developed on blast furnace tuyere monitoring hole using based on colored CCD (Charge-
Coupled Device, charge coupled cell) camera detecting system, the system can provide simultaneously coal dust firing in real time regard
Frequently, additionally it is possible to using image RGB (Red-gree-bule, the three primary colors of light) values and the corresponding relation of temperature, set up flame image
Temperature field curve, thermo parameters method is shown with this.The method is due to without effective algorithm process is used, hence setting up
Corresponding relation misses by a mile, it is impossible to be accurately obtained the thermo parameters method of blast-furnace roasting band, it is impossible to for blast furnace process is provided effectively
Reference, be unsuitable for blast furnace practical operation situation.
Therefore, Ma Gang attempts using beam splitting system again, taken the photograph with the compound of double CCD of high temperature Near Infrared CCD using colored CCD
As probe, connected with this by pick-up converting unit, image information analysis system, the image transmitting that will be absorbed to blast furnace operating
Room, while providing corresponding Temperature Distribution thermal image and temperature curve.But during due to calculating temperature curve using colorimetric method, do not have
Compound camera probe to acquisition system carries out blackbody furnace demarcation, without the Single wavelength radiation diagram needed for effectively selection colorimetric method
Picture, while not carrying out blackbody furnace demarcation to camera probe.Therefore the thermo parameters method for being detected in the invention is not accurate enough,
Effective blast-furnace roasting band temperature field information cannot be provided.The stability and accuracy of its monitoring device leave a question open, and have no document report
Road and situation about promoting the use of.
The content of the invention
For problem present in the temperature field detection of current blast-furnace roasting band, the present invention proposes a kind of blast-furnace roasting band temperature
The apparatus and method of field detection, are fired by not only providing real-time blast-furnace roasting band flame in blast furnace operating room computer display
The video image of burning, at the same provide blast-furnace roasting band thermo parameters method, contribute to grasp bottom house coal dust firing situation,
The active degree of cupola well, while being also that regulation conditions of blast furnace, energy-saving and emission-reduction, raising resource utilization provide important ginseng in time
Examine.
A kind of blast-furnace roasting band temperature field detection device based on colorimetric method, including beam splitting system, acquisition system, transmission system
System, image storage display system, data analysis and processing system, the light that combustion zone gives off, by beam splitting system, into adopting
After collecting system captured by black-white CCD industrial camera, image storage display system is transmitted a signal to by Transmission system, shown
Combustion zone operating mode and data analysis and processing system are calculated and be shown thermo parameters method, it is characterised in that：In the beam splitting system
High temperature resistant dustproof sleeve pipe can effectively prevent influence of the dust around blast furnace to detecting system, in acquisition system use two
The narrow-band pass filter of individual different wave length is positioned over the front end of CCD industrial cameras, to obtain the radiation image of specific wavelength, data
Analysis and processing system can remove noise, removal background stray light and edge extracting preprocessing function to radiation image, while
Blackbody demarcation data can be brought into improved colorimetric method computation model, at the same post-process using PLS and
Principle component analysis；Demarcate and post-process by pretreatment, improved colorimetric method model, blackbody furnace, the standard of calculating greatly improved
Exactness, reduces error, while improve the sensitivity of the detection means in combustion zone temperature field.
The radius of blast-furnace roasting band enters beam splitting system from air port peep-hole, and the light is split mirror and speculum is divided into
The uniform light beam of two-way, therewith into acquisition system.The image information that acquisition system shoots is stored up by Transmission system into image
Display system is deposited, the system can be presented over the display the flame of combustion zone, and air port combustion case is observed for operator.Other
Picture signal enter data analysis and processing system, by the pretreatment and the calculating of colorimetric method temperature measuring model of early stage, finally
Draw the thermo parameters method of combustion zone.
The beam splitting system includes high temperature resistant dustproof sleeve pipe, high temperature resistant optical glass, spectroscope, speculum, high temperature resistant light
The front end that glass is positioned over high temperature resistant dustproof sleeve pipe is learned, spectroscope is placed in same horizontal line with it in 45 degree of angles, and reflective mirror exists
Placed in 45 degree of angles with horizontal line immediately below spectroscope.
The acquisition system is by two narrow-band pass filters of different wave length, two camera lenses, two black-white CCD industrial cameras
Composition.The optical filter of narrow bandpass is installed on the front end of camera lens, and camera lens is installed on CCD front ends.
The data analysis and processing system are main by pretreatment module, blackbody furnace calibration curve module, colorimetric method calculating
Model module, post-processing module, temperature field coloured image display module.Image preprocessing removes noise, edge by medium filtering
Extraction, background stray light are removed, judge whether some pixels supersaturation composition occur.Calibration curve module is the set system
In the curve that 1900 DEG C to 2600 DEG C of blackbody furnaces are calibrated, the curve can calculate related to CCD parameter in colorimetric method.
Post-processing module is made up of least square method and principle component analysis, temperature field display module by thermo parameters method cloud atlas, maximum,
Minimum value, average value composition.
Described blast-furnace roasting band temperature field detection device is fixed on blast furnace tuyere monitoring hole by high temperature resistant dustproof sleeve pipe
On.
The beneficial effects of the invention are as follows：Using the combustion zone temperature field detection system based on colorimetric method, choose two and be adapted to
The narrow-band pass filter of wavelength, can effectively eliminate the error that computation model brings.Simultaneously by the experimentation of early stage, choosing
Select effective camera parameter combination and export problem to solve the supersaturated problem of CCD industrial cameras, and using the ginseng of optimization camera
Number, improves the sensitivity of camera calibration.Interference for blast fumance scene high temperature and dust to thermometric process, develops resistance to
High temperature dustproof sleeve pipe, to reduce the influence that dust and high temperature are caused to temperature field testing result.For captured by CCD industrial cameras
The Temperature calculating problem of image, the present invention proposes improved colorimetric method model, by the blackbody furnace mark to CCD industrial cameras
It is fixed, and using early stage pretreatment and post-processing algorithm, the accuracy in calculated temperature field is greatly improved.Simultaneously for blast furnace is grasped
Author shows air port coal dust firing and other relevant operating conditions, and provides the thermo parameters method and extreme value of blast-furnace roasting band.
Contribute to coal dust firing state, the active degree of cupola well of grasp bottom house, while being also timely regulation conditions of blast furnace, energy-conservation
Emission reduction, raising resource utilization provide important references.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure：1 is tuyere body, and 2 is peep-hole, and 3 is high temperature resistant dustproof tuyere stock, and 4 is high temperature resistant optical glass, 5
It is spectroscope, 6 is speculum, 7 narrow-band pass filters, and 8 is CCD industrial cameras and camera lens, and 9 is Transmission system, and 10 is image storage
Display system is deposited, 11 is data analysis and processing system.
Fig. 2 is the method flow diagram that blast-furnace roasting is detected with temperature field.
Specific embodiment
Blast-furnace roasting band thermo parameters method is detected in order to accurate, be the embodiment of the invention provides a kind of based on the new of colorimetric method
The preferred embodiments of the present invention are illustrated by type blast-furnace roasting band temperature field detection device below in conjunction with Figure of description, should
Work as understanding, preferred embodiment described herein is merely to illustrate and explain the present invention, is not intended to limit the present invention.And
In the case of not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Fig. 1 is structural representation of the invention, and Fig. 2 is the method flow diagram that blast-furnace roasting is detected with temperature field, and these are attached
Figure is simplified schematic diagram, and illustrates basic structure of the present invention in a schematic way, therefore only show related to the present invention
Constitute.
As shown in figure 1, this blast-furnace roasting band temperature field detection device, including beam splitting system, acquisition system, Transmission system,
Image storage display system, data analysis and processing system.The radiant light of blast-furnace roasting band is from air port peep-hole via high temperature resistant
Optical glass (4) enters detection means, and the light is split mirror (5) and speculum (6) is divided into the uniform light beam of two-way, treats that light beam enters
After entering acquisition system, light beam eventually arrives at the target of black-white CCD industrial camera (8) respectively through narrow-band pass filter (7), camera lens
Face, converts light signals into electric signal, and the electric signal output is extremely passed by the inside photoelectric conversion module of CCD industrial cameras
Defeated system (9).It should be noted that because blast-furnace roasting band radiation intensity is too strong, easily causing the appearance of black-white CCD industrial camera
Oversaturated phenomenon, it is therefore desirable to adjust the parameter such as parameter such as aperture size, time for exposure, gain of camera, makes captured
Image occurs without oversaturated phenomenon in blast-furnace roasting band range of temperature.
Electric signal is divided into two-way by Transmission system (9), and the first via is transmitted to image storage display system (10), the system energy
The flame of combustion zone is presented the shape for observing air port burning, slag crust come off, breeze blowing for blast furnace operating person over the display
State.Second road electric signal enters data analysis and processing system (11), by pretreatment module, image is gone by medium filtering
The point of radiation law is not met except noise, removal background stray light, edge extracting, removal, accurate original image is obtained
RGB gray values.Brought into improved duochrome method computation model in the calibrated calibration curve of blackbody furnace by by acquisition system,
Calculate the thermo parameters method of combustion zone, then the post processing such as carry out by least square method and principle component analysis, draw final
Combustion zone thermo parameters method figure and the data such as maximum, minimum value, average value.
Obviously, those skilled in the art can carry out various changes to the present invention and deform without deviating from essence of the invention
God and scope.So, if these modification and variation of the invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and deforms.
Claims (4)
1. a kind of blast-furnace roasting based on colorimetric method is with temperature field detection device, including beam splitting system, acquisition system, Transmission system
(9), image storage display system (10), data analysis and processing system (11), the light that combustion zone gives off, by light splitting system
System, into acquisition system after captured by black-white CCD industrial camera, transmit a signal to image storage by Transmission system and show
System (10) shows that combustion zone operating mode and data analysis and processing system (11) are calculated and be shown thermo parameters method, and its feature exists
In：High temperature resistant dustproof sleeve pipe in the beam splitting system can effectively prevent the dust around blast furnace to the shadow of detecting system
Ring, be positioned over the front end of CCD industrial cameras in acquisition system using the narrow-band pass filter of two different wave lengths, it is specific to obtain
The radiation image of wavelength, data analysis and processing system (11) can to radiation image removal noise, removal background stray light and
Edge extracting preprocessing function, while blackbody demarcation data can be brought into improved colorimetric method computation model, while
Post processing uses PLS and principle component analysis；By pretreatment, improved colorimetric method model, blackbody furnace demarcate and after
Treatment, greatly improved the degree of accuracy of calculating, error be reduced, while improve the sensitive of the detection means in combustion zone temperature field
Degree.
2. a kind of blast-furnace roasting based on colorimetric method according to claim 1 is with temperature field detection device, it is characterised in that
Described beam splitting system include high temperature resistant dustproof sleeve pipe (3), high temperature resistant optical glass (4), high temperature resistant spectroscope (5), reflection
Mirror (6), high temperature resistant optical glass (4) is positioned over high temperature resistant dustproof sleeve pipe (3) front end, and spectroscope is with high temperature resistant optical glass same
One horizontal line is placed in 45 degree of angles, and reflective mirror is placed with horizontal line immediately below spectroscope in 45 degree of angles；High temperature resistant dustproof sleeve pipe
Influence of the dust around blast furnace to detecting system can effectively be prevented.
3. a kind of blast-furnace roasting based on colorimetric method according to claim 1 is with temperature field detection device, it is characterised in that
Described acquisition system is included by two narrow-band pass filters of different wave length (7), two camera lenses, two black-white CCD industry phases
Machine (8) is constituted；The optical filter of narrow bandpass is positioned over the front end of camera lens, and camera lens is positioned over CCD industrial cameras (8) front end, narrow bandpass
The wavelength of optical filter (7) obtains the temperature field detection for being suitable for blast-furnace roasting band by the experiment of early stage.
4. a kind of blast-furnace roasting based on colorimetric method according to claim 1 is with temperature field detection device, it is characterised in that
Described data analysis and processing system (11) by pretreatment module, blackbody furnace calibration curve module, colorimetric method computation model, after
Processing module, temperature field display module composition, pretreatment module can remove noise, edge extracting, background by medium filtering
Veiling glare removes and judges whether some pixels supersaturation composition occur, and calibration curve module is the set system at 1900 DEG C
To the curve that 2600 DEG C of blackbody furnaces are calibrated, post-processing module is made up of least square method and principle component analysis, and temperature field shows
Show that module is made up of thermo parameters method cloud atlas, maximum, minimum value, average value；By with the treatment and analysis of upper module, obtaining
The high blast-furnace roasting band thermo parameters method of accuracy.
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| CN108279071A (en) * | 2017-12-29 | 2018-07-13 | 南京理工大学 | Full filed temperature field of molten pool detecting system based on two-color thermometry |
| CN109855738A (en) * | 2018-12-11 | 2019-06-07 | 中国矿业大学 | The boiler combustion diagnostic device and diagnostic method of portable coupling spectrum and image |
| CN109900364A (en) * | 2019-02-19 | 2019-06-18 | 常州陆铭光电科技有限公司 | Temperature measuring type closed-circuit TV system |
| CN110793647A (en) * | 2019-11-27 | 2020-02-14 | 成都工百利自动化设备有限公司 | Temperature detection method and system based on high-voltage switch cabinet temperature field distribution |
| CN113551531A (en) * | 2021-07-23 | 2021-10-26 | 中国恩菲工程技术有限公司 | Automatic control system of reaction furnace and state monitoring device of reaction furnace |
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