CN110184401A - Tap cinder iron state online test method - Google Patents
Tap cinder iron state online test method Download PDFInfo
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- CN110184401A CN110184401A CN201910388544.2A CN201910388544A CN110184401A CN 110184401 A CN110184401 A CN 110184401A CN 201910388544 A CN201910388544 A CN 201910388544A CN 110184401 A CN110184401 A CN 110184401A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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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
The present invention provides a kind of tap cinder iron state online test method, the tap cinder iron state online test method includes: installation imaging device, acquires the raw video image of tapping state and state of slagging tap before State of Blast Furnace；It passes the raw video image of acquisition back acquisition station, to raw video image digitization and carries out Data Analysis Services, obtain analysis result；Show analysis result.The present invention is used for blast furnace process production practices, and iron micro ball of slagging tap before grasp State of Blast Furnace in real time realizes refinement and management before State of Blast Furnace.
Description
Technical field
The present invention relates to field of metallurgy, and in particular to tap cinder iron detection method, especially a kind of tap cinder iron shape
State online test method.
Background technique
In blast furnace ironmaking process, the blast furnace crude fuel being continuously added from furnace roof is opposite by a series of gas-solid-liquid three
Molten iron should be continuously generated and clinker is accumulated in cupola well, when slag iron cannot exclude in time in cupola well, as amount of storage increases, cupola well
Interior space is reduced, and is led to phenomena such as blast furnace wind pressure increases, gas permeability deteriorates occur, is even resulted in tuyere damage, furnace condition disorder etc.
Serious accident.The main task of stokehold operation is ensuring that good iron mouth state and casthouse equipment state are (tapping machine, hydraulic
Big gun, Slag treatment equipment), the slag iron in furnace can timely be discharged out of cupola well, and the detection of slag iron state is to sentence before State of Blast Furnace
The disconnected whether timely smoothly foundation of Blast furnace slag discharge.
Currently, opening the stifled iron notch time, carrying out the slag time based on manual entry in tapping status information before general State of Blast Furnace,
It is cumbersome time-consuming, and influenced by factors such as field personnel's working condition variations, when typing information, has inaccurate or omits, and causes
The fundamental analysis data inaccuracy of iron, slag yield, iron time management, iron mouth management etc. is counted, it is as a result also insincere, it can not analyze
The slag iron state of blast furnace at that time is not able to satisfy production digitlization, fine-grained management requirement before big State of Blast Furnace.
In conclusion following problems exist in the prior art: existing not in the acquisition process of slag iron information before State of Blast Furnace
In time, inaccurate problem.
Summary of the invention
The present invention provides slag iron information online test method before accurate, quick, the efficient State of Blast Furnace of one kind, to solve height
Exist in the acquisition process of furnace front slagging iron information not in time, inaccuracy, the problems such as human factor is more.
For this purpose, the present invention proposes that a kind of tap cinder iron state online test method, the tap cinder iron state are online
Detection method includes:
Imaging device is installed, the raw video image of tapping state and state of slagging tap before State of Blast Furnace is acquired；
It passes the raw video image of acquisition back acquisition station, to raw video image digitization and carries out at data analysis
Reason obtains analysis result；
Show analysis result.
Further, the tap cinder iron state online test method specifically includes:
Step A: imaging device and lighting device are installed above blast furnace discharge yard and belt of mucking haulage, according to need to detect
Iron mouth and the belt quantity of slag adjust setting camera orientation；
Step B: each frame video image on the blast furnace discharge yard obtained with imaging device and/or belt of mucking haulage, video figure
The format of picture is rgb format, is stored in acquisition station；Imaging device 24 frame video images of shooting per second；
Step C: each frame video image collected to acquisition station carries out the conversion of HSV colour model and saves；
Step D: image filtering and picture element matrix square matrix are carried out to each frame video image by the conversion of HSV colour model
Change processing, obtains the picture element matrix gray feature value of each frame image and saves；
Step E: the picture element matrix gray feature value for counting each frame image is solved, the gray feature of each frame image is obtained
The largest connected area of value simultaneously saves；
Step F: the largest connected area of the gray feature value of 20 frame images of the Time Continuous that acquisition station is saved carries out K value
It calculates:
K be tap cinder iron Trend value, dimensionless, wherein x (i) be exactly 1 to 20 composition arrays, x (i)=[1,2,
3,…,20]；Tzmj (i) is the largest connected area of gray feature value of corresponding 20 frame images, and unit is pixel；Avg (x, 20) generation
Table x (i) from 1 get 20 average；Avg (tzmj, 20) refers to the average of 20 taken connection areas,
Step G: according to K value calculated result, judge tap cinder iron state.
Further, count the pervious 20 frame image of present frame K value > a1 number countk1, work as countk1 > b1 and
When tzmj > c1, it is judged as tapping outlet state；K value > a2 number the countk2 for counting the pervious 20 frame image of present frame, when
Countk2>b2 and when tzmj<c2, is judged as stifled iron notch state；Count K value > a3 number of the pervious 20 frame image of present frame
Countk3 is judged as countk3 > b3 and tzmj > c3 and carrys out scoriform state；State of blocking up and out complete slag state synchronized.
Further, step D includes: to carry out shearing and filtering processing to tapping, the unconspicuous characteristics of image of signal of slagging tap.
Further, step D further include: by the image pixel matrix polishing after shearing and filtering be square matrix.
Further, step E includes: the tone for choosing the picture element matrix gray feature of each frame image, saturation degree, lightness
The closed operation for first expanding post-etching is carried out, the largest connected area of the gray feature value is acquired.Wherein, expansion is exactly to image
High bright part carries out " field expansion ", and effect picture possesses the highlight regions bigger than original image；Corrosion is the highlight regions in original image
It is nibbled, effect picture possesses highlight regions more smaller than original image.
Further, it is realized by the morphological transformation morphologyEx function of OpenCV, inputs closed operation in function
Parameter realizes that expansion post-etching is used to remove the dim spot in image.
The shortcomings that present invention replaces human eye with camera or imaging device, overcomes sensor non-refractory, measurement is accurate,
The problem of there is no human eye fatigue and human errors, and it is able to carry out digitlization storage, real-time online detection is carried out, is mitigated
The manipulation strength of worker, improves the reliability of operation, can be used in blast furnace process production practices, before grasping State of Blast Furnace in real time
It slags tap iron micro ball, realizes refinement and management before State of Blast Furnace.
Detailed description of the invention
Fig. 1 is workflow block diagram of the invention；
Fig. 2 is that the original RGB image that cast house camera of the present invention is read is converted to HSV color by color space function
The result figure of color model；
Fig. 3 is to carry out shearing and filtering processing to the unconspicuous characteristics of image of Fig. 2 tapping signal characteristic；
Fig. 4 is the threshold value setting that image of the Fig. 3 by the conversion of HSV colour model passes through each Color Channel of HSV again, meeting
The zone set points of threshold value are 255, and the region for not meeting threshold value is set as 0, are finally realized after image binaryzation (black and white)
As a result；
Fig. 5 is that the original RGB image of the invention for mucking haulage the reading of belt camera is converted to HSV by color space function
The result figure of colour model；
Fig. 6 is the unconspicuous characteristics of image progress shearing and filtering processing of signal characteristic of slagging tap to Fig. 2；
Fig. 7 is the threshold value setting that image of the Fig. 6 by the conversion of HSV colour model passes through each Color Channel of HSV again, meeting
The zone set points of threshold value are 255, and the region for not meeting threshold value is set as 0, are finally realized after image binaryzation (black and white)
As a result.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
It is bright.
As shown in Figure 1, online test method of the present invention, by installation imaging dress above blast furnace discharge yard and grain slag travelling belt
It sets and provides raw video image with lighting device, acquisition module passes vision signal back acquisition station, will be regarded by specific algorithm
Frequency signal data simultaneously carries out Data Analysis Services, its calculated result information is shown in system, realizes tapping before State of Blast Furnace
The real-time tracking of state and state of slagging tap, the specific steps are as follows:
In blast furnace discharge yard and muck haulage imaging device and lighting device be installed above belt, according to the iron mouth for needing to detect and
The belt quantity of slag sets camera orientation to adjust；
By image capture module, as shown in Figure 2 and Figure 5,24 frame image per second is obtained by period image zooming-out software
Data obtain the image that each frame picture format is rgb format.
The conversion of HSV colour model is carried out to acquisition station acquired image, obtains HSV format-pattern；HSV lattice after conversion
Formula image carries out dead angle Fuzzy processing, keeps image information more accurate；
Wherein, as shown in Figure 3 and Figure 6, image filtering and picture element matrix are carried out to the image for carrying out the conversion of HSV colour model
Square matrixization processing.It is unobvious to tapping, signal of slagging tap because tapping, the main feature for image of slagging tap are in the middle section of image
Characteristics of image carry out shearing and filtering processing.And by the image pixel matrix polishing after shearing and filtering be square matrix.
As shown in figs. 4 and 7, the picture element matrix gray feature value for counting each frame image is solved, it will be in Fig. 3 and Fig. 6
Image is set by the threshold value of each Color Channel of HSV, is 255 (i.e. white) the zone set points for meeting threshold value, is not met threshold
The region of value is set as 0 (i.e. black), finally realizes the result after image binaryzation (black and white).
Then the closed operation for first expanding post-etching is carried out to the tone of selected characteristic shown in Fig. 4 and Fig. 7, saturation degree, lightness,
The largest connected area for acquiring gray feature value acquires the greatest measure of white area in Fig. 4 and Fig. 7 (because of tap cinder
Under iron state, the HSV numerical value of molten steel or slag iron will reach certain numerical value, alternatively, under tap cinder iron state, molten steel or slag
The tone of iron, saturation degree, lightness are different from background or non-slag iron state, are embodied in gray feature value, are exactly molten steel
Or slag iron is white area).It is carried out for example, choosing the tone of the picture element matrix gray feature of each frame image, saturation degree, lightness
The closed operation for first expanding post-etching, acquires the largest connected area of the gray feature value.Wherein, expansion is exactly highlighted to image
Part carries out " field expansion ", and effect picture possesses the highlight regions bigger than original image；Corrosion is highlight regions in original image by silkworm
Food, effect picture possess highlight regions more smaller than original image.
Further, it is realized by the morphological transformation morphologyEx function of OpenCV, inputs closed operation in function
Parameter realizes that expansion post-etching is used to remove the dim spot in image.
The largest connected area of the gray feature value of 20 frame images of the Time Continuous that acquisition station is saved carries out the calculating of K value:
K is the variation tendency (slope) of tap cinder iron Trend value or 20 points (the corresponding frame image of a point), immeasurable
Guiding principle indicates tapping outlet state for example, K is positive value, and K is negative value, indicates stifled iron notch state；
Wherein x (i)=[1,2,3 ..., 20]；Tzmj (i) is the largest connected face of gray feature value of corresponding 20 frame images
Product, unit is pixel；Avg (x, 20) represent x (i) from 1 get 20 average；Avg (tzmj, 20) refers to 20 taken connections
The average of area,
K value > a1 number the countk1 for counting the pervious 20 frame image of present frame, works as countk1 > b1 and tzmj > c1
When, it is judged as tapping outlet state；Count the pervious 20 frame image of present frame K value > a2 number countk2, work as countk2 >
B2 and when tzmj < c2, is judged as stifled iron notch state；K value > a3 number countk3 of the pervious 20 frame image of present frame is counted,
As countk3 > b3 and tzmj > c3, it is judged as and carrys out scoriform state；State of blocking up and out complete slag state synchronized；The a1 of different iron mouths,
B1, c1, a2, b2, c2, a3, b3, c3 value are different.
A1, b1, c1, a2, b2, c2, a3, b3, c3 be all the determination of each threshold values for threshold values, the position with camera installation
It sets, the variation of light is related round the clock, and the determination of the camera threshold values of each iron mouth and belt of mucking haulage is different from.To work as the first six
For the threshold values that number blast furnace Northeast Railway Bureau mouth uses, a1=150；B1=15；C1=10000；A2=-150；B2=10；C2=5000；
Such as K value is greater than a1=150 and continuous counter reaches countk1=15 and current image white connection area reaches tzmj
It is can determine whether when=10000 or more as tapping outlet state, record current time is the tapping outlet time.
Data Analysis Services are as a result, obtain iron time information, tapping outlet time, stifled iron notch time, iron mouth state, slag yield etc.
Information is shown in the front end page of stokehold informatization platform.
Slag iron is monitored on-line before the present invention realizes State of Blast Furnace with on-line monitoring system, the on-line monitoring system that the present invention uses
System: including: imaging device, field control case, video image acquisition module, Image Acquisition station, image processing module, display module
Deng.
The present invention using network video signal carry out secondary development, using the IP address of preview interface imaging device,
Device port, user name, password, channel content, Image Acquisition station connection stokehold imaging device simultaneously generate preview screen.
Successful connection and after generating preview screen, creation thread timing calls grabgraf interface to generate picture, and calls image
Recognition application handles pictorial information.
Image procossing executes program and writes program packing generation by vision library.Image processing program is connect using calling OpenCv
Mouthful grabgraf is read, as shown in Fig. 2, grabgraf and being converted to HSV colour model, as shown in Figure 3；Image data after conversion is gone
Dead angle is blurred, and the closed operation of post-etching is first expanded after picture element matrix square matrix.
Image processing module obtains current time, tapping hole and the largest connected area of clinker gray scale characteristic value and its calculating
K value is stored in the specified table of database.The tapping hole and the largest connected area of clinker in certain time are counted, size is passed through
And amplitude of variation, judgment rule is formulated, tapping duration and stifled iron notch time are obtained, carrys out the slag time in conjunction with tapping duration judgement and goes out
The complete slag time calculates slag yield.
Effect of the invention:
1, slagging tap before State of Blast Furnace, tapping information can in real time, accurately generate；
2, using slag tap in real time, tapping information obtains iron time, slag iron time, slag yield, iron mouth working condition, iron runner
The secondary calculatings data such as working condition, Slag treatment state.
3, slag iron data before accurate State of Blast Furnace will be stored for a long time, as the data for establishing fine-grained management before State of Blast Furnace
Basis.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (7)
1. a kind of tap cinder iron state online test method, which is characterized in that the tap cinder iron state on-line checking side
Method includes:
Imaging device is installed, acquires the raw video image of tapping state and state of slagging tap before State of Blast Furnace, format is rgb format；
It passes the raw video image of acquisition back acquisition station, to raw video image digitization, HSV lattice is converted to by rgb format
Formula, and Data Analysis Services are carried out, obtain analysis result；
Show analysis result.
2. tap cinder iron state online test method as described in claim 1, which is characterized in that the tap cinder iron shape
State online test method specifically includes:
Step A: imaging device and lighting device are installed above blast furnace discharge yard and belt of mucking haulage, according to the iron mouth for needing to detect
Setting camera orientation is adjusted with the belt quantity of slag；
Step B: each frame video image on the blast furnace discharge yard obtained with imaging device and/or belt of mucking haulage, video image
Format is rgb format, is stored in acquisition station；Imaging device 24 frame video images of shooting per second；
Step C: each frame video image collected to acquisition station carries out the conversion of HSV colour model and saves；
Step D: each frame video image by the conversion of HSV colour model is carried out at image filtering and picture element matrix square matrix
Reason, obtains the picture element matrix gray feature value of each frame image and saves；
Step E: the picture element matrix gray feature value for counting each frame image is solved, the gray feature value of each frame image is obtained
Largest connected area simultaneously saves；
Step F: the largest connected area of the gray feature value of 20 frame images of the Time Continuous that acquisition station is saved carries out K value meter
It calculates:
K be tap cinder iron Trend value, dimensionless, wherein x (i) be exactly 1 to 20 composition arrays, x (i)=[1,2,3 ...,
20]；Tzmj (i) is the largest connected area of gray feature value of corresponding 20 frame images, and unit is pixel；Avg (x, 20) represents x
(i) 20 average is got from 1；Avg (tzmj, 20) refers to the average of 20 taken connection areas,
Step G: according to K value calculated result, judge tap cinder iron state.
3. tap cinder iron state online test method as claimed in claim 2, which is characterized in that statistics present frame is pervious
K value > a1 number countk1 of 20 frame images, as countk1 > b1 and tzmj > c1, it is judged as tapping outlet state；Statistics
K value>a2 number countk2 of the pervious 20 frame image of present frame is judged as stifled iron as countk2>b2 and tzmj<c2
Mouth state；K value > a3 number the countk3 for counting the pervious 20 frame image of present frame, as countk3 > b3 and tzmj > c3,
It is judged as and carrys out scoriform state；State of blocking up and out complete slag state synchronized；A1, b1, c1, a2, b2, c2, a3, b3, c3 be all for valve
Value, dimensionless.
4. tap cinder iron state online test method as claimed in claim 2, which is characterized in that step D includes: to out
The unconspicuous characteristics of image of iron, signal of slagging tap carries out shearing and filtering processing.
5. tap cinder iron state online test method as claimed in claim 2, which is characterized in that step D further include: will cut
Cutting filtered image pixel matrix polishing is square matrix.
6. tap cinder iron state online test method as claimed in claim 2, which is characterized in that step E includes: to choose often
The tone of the picture element matrix gray feature of one frame image, saturation degree, lightness carry out the closed operation for first expanding post-etching, acquire described
The largest connected area of gray feature value.
7. tap cinder iron state online test method as claimed in claim 6, which is characterized in that pass through the form of OpenCV
It learns transformation morphologyEx function to realize, input closed operation parameter realizes expansion post-etching for removing in image in function
Dim spot.
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| CN111020091A (en) * | 2019-12-20 | 2020-04-17 | 新冶高科技集团有限公司 | Visual online measurement system and temperature measurement method for blast furnace molten iron flow |
| CN111593151A (en) * | 2020-04-30 | 2020-08-28 | 柳州钢铁股份有限公司 | On-line detection method for depth of blast furnace tap hole |
| CN112080599A (en) * | 2020-09-28 | 2020-12-15 | 广东韶钢松山股份有限公司 | Blast furnace air feeding method and electronic equipment |
| CN112257590A (en) * | 2020-10-22 | 2021-01-22 | 中冶南方工程技术有限公司 | Automatic detection method and system for working state of blast furnace taphole and storage medium |
| WO2022105226A1 (en) * | 2020-11-17 | 2022-05-27 | 中冶南方工程技术有限公司 | Method and system for quantitatively presuming silicon-sulfur content of molten iron during blast furnace tapping |
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| CN111020091B (en) * | 2019-12-20 | 2021-11-09 | 新冶高科技集团有限公司 | Visual online measurement system and temperature measurement method for blast furnace molten iron flow |
| CN111593151A (en) * | 2020-04-30 | 2020-08-28 | 柳州钢铁股份有限公司 | On-line detection method for depth of blast furnace tap hole |
| CN111593151B (en) * | 2020-04-30 | 2022-03-22 | 柳州钢铁股份有限公司 | On-line detection method for depth of blast furnace tap hole |
| CN112080599A (en) * | 2020-09-28 | 2020-12-15 | 广东韶钢松山股份有限公司 | Blast furnace air feeding method and electronic equipment |
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| CN112257590B (en) * | 2020-10-22 | 2023-08-01 | 中冶南方工程技术有限公司 | Automatic detection method, system and storage medium for working state of blast furnace tap hole |
| RU2814807C1 (en) * | 2020-10-22 | 2024-03-04 | ВИСДРИ ИНЖИНИРИНГ энд РИСЕРЧ ИНКОРПОРЕЙШН ЛИМИТЕД | Method for automatic detection of operating condition, its system and storage medium for taphole for blast furnace |
| WO2022105226A1 (en) * | 2020-11-17 | 2022-05-27 | 中冶南方工程技术有限公司 | Method and system for quantitatively presuming silicon-sulfur content of molten iron during blast furnace tapping |
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| CN114774605B (en) * | 2022-03-15 | 2023-06-13 | 中南大学 | Intelligent forecasting device for blast furnace iron notch blocking time |
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