CN102853820A - Material falling trajectory measurement method for blast furnace - Google Patents
Material falling trajectory measurement method for blast furnace Download PDFInfo
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- CN102853820A CN102853820A CN2011101835207A CN201110183520A CN102853820A CN 102853820 A CN102853820 A CN 102853820A CN 2011101835207 A CN2011101835207 A CN 2011101835207A CN 201110183520 A CN201110183520 A CN 201110183520A CN 102853820 A CN102853820 A CN 102853820A
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Abstract
The inventive material falling trajectory measurement method for blast furnace includes forming a grid plane containing at least four grid intersections in a blast furnace by use of light beam; shooting interior of the blast furnace with a camera to obtain image of the grid plane; defining plural intersections corresponding to the grid intersections respectively on a mechanical diagram of the blast furnace; calculating corresponding parameters between coordinates of the intersections and coordinates of the grid intersections; obtaining outer edge bright spot coordinates and inner edge bright spot coordinates of material flow; calculating their corresponding outer edge bright spot coordinates and inner edge bright spot coordinates in the mechanical diagram; and performing curve fitting on the corresponding outer edge bright spot coordinates and inner edge bright spot coordinates, to obtain outer edge trajectory curve and inner edge trajectory curve of material flow.
Description
Technical field
The invention relates to a kind of method for measurement, and particularly relevant for the method for measurement of the blanking track of a kind of blast furnace (Blast Furnace).
Background technology
The cloth operator scheme of blast furnace can affect the distribution of bed structure and furnace gas.Therefore, if can provide distributing trough when each angle blanking, outer rim and the inner edge curve of material stream can define the center line that discharging is flowed.Then, can understand from the material that defines stream center line the drop point information of material stream, can help by this site operation personnel to control the geometric configuration of charge level, so improve charge level gas penetration potential, increase gas utilization rate, stablize the thermal load of blast furnace wall.Therefore, the material flow track during blast furnace material distribution is considerable information for the production efficiency that promotes blast furnace.
At present, there are several to measure the mode of the blanking track of blast furnace.First kind of way is by Gao, " the The Blowin Charging Measurement of 2500M3 BF at Shanghai No. 1 Iron ﹠amp that proposes in the 179-184 page or leaf of the people such as Z.K. in calendar year 2001 Conference On Steelmaking collection of thesis (Ironmaking Conference Proceedings); Steel (Group) Co. Ltd. ".This kind mode is a kind of measurement mode of contact.The method is to set up the cross grid in blast furnace, is used as coordinate basis, uses the position of understanding blanking in the blast furnace.Yet because this kind mode need be established bracing frame and be fixed the cross grid, therefore when distributing trough crossed bracing frame, blanking can directly touch with bracing frame, and can affect the drop point site of on-the-spot prediction.
The second way is by Matsui, " the Stabilizing Burden Trajectory into Blast Furnace Top under High Ore to Coke Ratio Operation " that the people such as Y. proposed in Japanese iron steel association lecture collection of thesis (ISIJ International) the 43rd volume 1159-1166 page or leaf in 2002.This kind mode also is a kind of measurement mode of contact, and it is in the position of blast furnace zero material level line one pulp-collecting box to be set, and the material of being accepted with this pulp-collecting box heavily decides the furnace charge track.Yet similarly, during the distributing trough blanking, blanking can touch with pulp-collecting box, and then the drop point site of the on-the-spot prediction of impact.
The third mode is by Steyls, " the Measurement of Material Trajecties in Bell-less Top Charging " that the people such as D. propose in the technical information of French Sollac iron company.This kind mode equally also is a kind of measurement mode of contact.In this mode, measure bar and outside blast furnace, connect a load measuring gauge and relevant register system.During cloth, furnace charge can strike the measurement bar in the blast furnace, and diverse location will produce the loading signal of varying strength.Operating personnel decide the furnace charge drop point according to this, and then simulate material flow track.Yet similarly, during the bed of cloth blanking, furnace charge can strike the measurement bar in the blast furnace, and then the drop point site of the on-the-spot prediction of impact.
The 4th kind of mode is to levy " a middle imperial blast furnace opening blanking measures preliminary report " that armour and Gao Tai proposed in 2010 by the height of Beijing Shenwang Pioneer Technology Corp..This kind mode is a kind of contactless laser network method.In this mode, when passing through the laser grid plan with material stream, laser beam is beaten the bright spot on material stream, comes to flow the foundation that external form measures as material.
Please refer to 1A figure and 1B figure, its be illustrate respectively in a kind of blast furnace the laser network image and corresponding to the blast furnace machine drawing of the blast furnace laser network image of 1A figure.In the non-contact measurement method of the blast furnace blanking track of the 4th kind of mode, it is the measurement of carrying out material flow track in the blast furnace with laser network.This non-contact measurement method is first two generating lasers 102 and 104 to be installed in respectively in the eastern manhole 110 and western manhole 112 of blast furnace 108.Then, a video camera (not illustrating) is installed in the north manhole (not illustrating) of blast furnace 108.
From eastern manhole 110 and western manhole 112 Emission Lasers bundles 114 and 116, the video camera that recycling is arranged in the manhole of the north carries out capture to this dual- laser transmitter 102 and 104 respectively, and obtained image is such as the laser network image 100a of 1A figure.These laser beam 114 are mutually intersected with 116 and at blast furnace 108 inner formation reference coordinates 118, shown in the corresponding blast furnace machine drawing 100b of the laser network image 100a of 1A figure and 1B figure.These reference coordinate 118 vertical grounds, and the center line by blast furnace 108.
When the distributing trough 106 of blast furnace 108 during from the top cloth of blast furnace 108, distributing trough 106 can rotate in concentrically ringed mode, and material stream 120 can cut off laser beam 114 and 116 formed laser networks.At this moment, laser beam 114 and 116 can be beaten on material stream 120, thereby forms several bright spots 122, shown in 1A figure.The method then by the mode of artificial judgment, with bright spot 122 positions on the laser network image 100a of 1A figure, is described to the blast furnace machine drawing 100b of 1B figure accordingly, and finishes the track measuring program of the material stream 120 of blast furnace 108.
Yet, describe coordinate conversion step to the blast furnace machine drawing 100b fully by artificial judgement owing to will expect to flow 120 track from laser network image 100a, therefore such mode is not only consuming time, and the rendering results of being undertaken by different people may be inconsistent, so accuracy is not good.
Summary of the invention
Therefore, an aspect of of the present present invention is the method for measurement at the blanking track that a kind of blast furnace is provided, and it is to utilize the mode of plane conversion to carry out conversion between the coordinate of the mesh coordinate of image and blast furnace machine drawing.So the time that the material flow track coordinate on the image is corresponded on the blast furnace machine drawing can obtain significantly to reduce.
Another aspect of the present invention is the method for measurement at the blanking track that a kind of blast furnace is provided, the accuracy that its material flow track that can effectively promote blast furnace measures.
Another aspect of the present invention is the method for measurement at the blanking track that a kind of blast furnace is provided, the material stream outer counter and material stream inner edge curve of pin-point accuracy can be provided, and the field personnel that can assist blast furnace sets required shape of charge level, and then can promote the production efficiency of blast furnace.
According to above-mentioned purpose of the present invention, a kind of method for measurement of blanking track of blast furnace is proposed, it comprises the following step.Utilize a plurality of light beams to form a grid plan in blast furnace, wherein this grid plan comprises at least four grid intersection points.Utilize a video camera to take high furnace interior, to obtain the image of aforesaid grid plan.Machine drawing at blast furnace defines the grid intersection point that a plurality of intersection points correspond respectively to the grid plan in the aforementioned image.Corresponding parameter between the coordinate of the coordinate that calculates these intersection points and corresponding grid intersection point.From aforesaid image, obtain light beam and beat a plurality of outer rim coordinate of bright spot and a plurality of inner edge coordinate of bright spot that flows at a material.Utilize aforesaid corresponding parameter, calculate respectively these outer rim coordinate of bright spot and a plurality of corresponding outer rim coordinate of bright spot of inner edge coordinate of bright spot in machine drawing and a plurality of corresponding inner edge coordinate of bright spot.Respectively these corresponding outer rim coordinate of bright spot are carried out a curve fit process with corresponding inner edge coordinate of bright spot, to obtain an outer rim geometric locus and an inner edge geometric locus of aforementioned material stream.
According to one embodiment of the invention, above-mentioned light beam is to be provided by at least two high light light sources.
According to another embodiment of the present invention, above-mentioned high light light source comprises generating laser.
According to another embodiment of the present invention, above-mentioned curve fit process is to utilize a computer equipment to carry out.
According to an again embodiment of the present invention, above-mentioned curve fit process is to utilize a quadratic curve equation formula to carry out match.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described as follows:
1A figure is the laser network image that illustrates in a kind of blast furnace.
1B figure is the blast furnace machine drawing that illustrates corresponding to the blast furnace laser network image of 1A figure.
The 2nd figure is the process flow diagram that illustrates according to the method for measurement of the blanking track of a kind of blast furnace of an embodiment of the present invention.
3A figure is the grid image that illustrates according in a kind of blast furnace of an embodiment of the present invention.
3B figure is the blast furnace machine drawing that illustrates corresponding to the blast furnace grid image of 3A figure.
Grid image in blast furnace when 4A figure is a kind of distributing trough cloth that illustrates according to an embodiment of the present invention.
4B figure is the blast furnace machine drawing that illustrates corresponding to the blast furnace grid image of 4A figure.
The primary clustering symbol description
Embodiment
Please in the lump with reference to the 2nd figure, 3A figure and 3B figure, its be illustrate respectively process flow diagram according to the method for measurement of the blanking track of a kind of blast furnace of an embodiment of the present invention, according to the grid image in a kind of blast furnace of an embodiment of the present invention and corresponding to the blast furnace machine drawing of the blast furnace grid image of 3A figure.In the present embodiment, when carrying out the method for measurement 200 of blanking track of blast furnace, first as described in the step 202, for example utilize at least two high light light sources 302 with 304, respectively at several light beams 314 and 316 of blast furnace 308 interior formation, as 3A scheme and 3B figure shown in.These light beams 314 mutually intersect with 316 and define grid plan 320 in blast furnace 308 inside.In an example embodiment, high light light source 302 and 304 can for example be generating laser.
Then, as described in the step 204 of method for measurement 200, on the position of the panorama that photographs this grid plan 320 of blast furnace 308, installing video camera (not illustrating).And utilize this video camera to take the inside of blast furnace 308, obtain by this light beam 314 and 316, and the image of the grid plan 320 that consists of of these light beams 314 and 316.
Next, grid plan 320 acceptances of the bid at the grid image 300a of 3A figure illustrate 4 grid intersection point 318.In the embodiment shown in the 3A figure, in the grid plan 320 of grid image 300a, indicate altogether 13 grid intersection points 318.Then, as described in the step 206 of method for measurement 200, indicate and define several intersection points 322 at the machine drawing 300b of blast furnace 308, shown in 3B figure.Wherein, the position of these intersection points 322 corresponds respectively to the grid intersection point 318 on the grid plan 320 among the grid image 300a.
Then, as described in the step 208 of survey method 200, the corresponding parameter between the coordinate of the grid intersection point 318 on the coordinate of these intersection points 322 of calculating machine Figure 30 0b and its corresponding grid image 300a.In this calculation procedure, the planimetric coordinates of the grid intersection point 318 on can shilling grid image 300a is a
i =
, i=1 ~ N wherein, and N is the number of grid intersection point 318.In the example embodiment of 3A figure, the number of grid intersection point 318 is 13, so N is 13.Making the coordinate of the corresponding intersection point 322 on the machine drawing 300b of blast furnace 308 is b again
i =
, wherein since intersection point 322 corresponding to grid intersection point 318, so i=1 ~ N, N is the number of grid intersection point 318, equally also is the number of intersection point 322.Corresponding relation between the coordinate of the coordinate of grid intersection point 318 and intersection point 322 can be expressed as ai
b
i Each group is corresponding in the coordinate of the coordinate of grid intersection point 318 and intersection point 322 can following mathematical equation (1) expression:
b
i =Ha
i (1)
Wherein, because a
i With b
i Be one 3 * 1 matrix, so H is one 3 * 3 matrixes, and H represents ai
b
i Between the conversion corresponding parameter.In certain embodiments, direct linear transformation method (the Direct Linear Transformation that this corresponding Parameter H can be general; DLT) or the mode of other nonlinear optimization find the solution.
Next, please refer to 4A figure and 4B figure, the grid image in the blast furnace when it is a kind of distributing trough cloth that illustrates respectively according to an embodiment of the present invention and corresponding to the blast furnace machine drawing of the blast furnace grid image of 4A figure.When the distributing trough 306 of blast furnace 308 during from the top cloth of blast furnace 308, distributing trough 306 can rotate in concentrically ringed mode, and material stream 324 can cut off light beam 314 and 316 formed grid plans 320.At this moment, light beam 314 and 316 can be beaten on material stream 324, thereby forms several outer rim bright spots 310 and several inner edge bright spots 326, shown in 3A figure.Method for measurement 200 is then as described in the step 210, according to grid image 300a, acquisition light beam 314 with 316 dozens in material stream 324 formed several outer rim bright spots 310 and inner edge bright spots 326, and find out these outer rim bright spot 310 and the coordinate of inner edge bright spot 326 on grid plan 320.
Then, as described in the step 212 of method for measurement 200, see through equation (1) b
i =Ha
i , and corresponding Parameter H and the outer rim bright spot 310 of utilizing step 208 to calculate (are equation (1) b with the coordinate of inner edge bright spot 326 on grid plan 320
i =Ha
i In a
i ), and calculate respectively the corresponding outer rim bright spot 312 of coordinate in the machine drawing 300b of the blast furnace 308 of 4B figure and the coordinate of corresponding inner edge bright spot 328 of outer rim bright spot 310 and inner edge bright spot 326 on the grid plan 320.
Then, as described in the step 214 of method for measurement 200, utilize computer equipment for example respectively to the processing that carries out curve fitting of the coordinate of the corresponding outer rim bright spot 312 among the machine drawing 300b and the coordinate of corresponding inner edge bright spot 328, use the outer rim geometric locus 330 and inner edge geometric locus 332 that obtain material stream 324, shown in 4B figure.In one embodiment, can utilize the quadratic curve equation formula to expect to flow the process of fitting treatment of 324 outer rim geometric locus 330 and inner edge geometric locus 332.Therefore, outer rim geometric locus 330 can be represented with a parabolical quadratic polynomial respectively with inner edge geometric locus 332.
By the embodiment of the invention described above as can be known, the method for measurement of the blanking track that an advantage of the present invention is blast furnace of the present invention is to utilize the mode of plane conversion to carry out conversion between the coordinate of the mesh coordinate of image and blast furnace machine drawing.Therefore, the time that the material flow track coordinate on the image is corresponded on the blast furnace machine drawing can obtain significantly to reduce.
By the embodiment of the invention described above as can be known, another advantage of the present invention is in the method for measurement of the blanking track of blast furnace of the present invention, coordinate conversion is to utilize the plane conversion mode, can effectively avoid the artificial error of judging, the accuracy that the material flow track that therefore uses method of the present invention can effectively promote blast furnace measures.
By the embodiment of the invention described above as can be known, another advantage of the present invention can provide the material stream outer counter and material stream inner edge curve of pin-point accuracy for the method for measurement of the blanking track of blast furnace of the present invention, and utilize material stream outer counter and material stream inner edge curve can assist the field personnel of blast furnace to set required shape of charge level, and then can promote the production efficiency of blast furnace.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention; any those having an ordinary knowledge in this technical field; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention should be looked appended claim and is as the criterion.
Claims (5)
1. the method for measurement of the blanking track of a blast furnace comprises:
Utilize a plurality of light beams to form a grid plan in this blast furnace, wherein this grid plan comprises at least four grid intersection points;
Utilize a video camera to take this high furnace interior, to obtain an image of this grid plan;
Machine drawing at this blast furnace defines those grid intersection points that a plurality of intersection points correspond respectively to this grid plan in this image;
Corresponding parameter between the coordinate of the coordinate that calculates those intersection points and those corresponding grid intersection points;
From this image, obtain those light beams and beat a plurality of outer rim coordinate of bright spot and a plurality of inner edge coordinate of bright spot that flows at a material;
Utilize this correspondence parameter, calculate respectively those outer rim coordinate of bright spot and a plurality of corresponding outer rim coordinate of bright spot of those inner edge coordinate of bright spot in this machine drawing and a plurality of corresponding inner edge coordinate of bright spot; And
Respectively the corresponding inner edge coordinate of bright spot with those of those corresponding outer rim coordinate of bright spot is carried out a curve fit process, to obtain an outer rim geometric locus and an inner edge geometric locus of this material stream.
2. the method for measurement of the blanking track of blast furnace as claimed in claim 1, wherein those light beams are to be provided by at least two high light light sources.
3. the method for measurement of the blanking track of blast furnace as claimed in claim 2, wherein those high light light sources comprise generating laser.
4. the method for measurement of the blanking track of blast furnace as claimed in claim 1, wherein this curve fit process is to utilize a computer equipment to carry out.
5. the method for measurement of the blanking track of blast furnace as claimed in claim 1, wherein this curve fit process is to utilize a quadratic curve equation formula to carry out match.
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Cited By (3)
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| CN105734191A (en) * | 2014-12-10 | 2016-07-06 | 上海宝钢工业技术服务有限公司 | Distributing trace display device and method of cardan joint transmission mechanism distributing device |
| WO2016183954A1 (en) * | 2015-05-21 | 2016-11-24 | 中兴通讯股份有限公司 | Calculation method and apparatus for movement locus, and terminal |
| CN106282463A (en) * | 2016-08-30 | 2017-01-04 | 武汉钢铁股份有限公司 | Use the method that high-speed camera measures blast furnace material flow track |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105734191A (en) * | 2014-12-10 | 2016-07-06 | 上海宝钢工业技术服务有限公司 | Distributing trace display device and method of cardan joint transmission mechanism distributing device |
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| CN106282463A (en) * | 2016-08-30 | 2017-01-04 | 武汉钢铁股份有限公司 | Use the method that high-speed camera measures blast furnace material flow track |
| CN106282463B (en) * | 2016-08-30 | 2018-04-24 | 武汉钢铁有限公司 | Using the method for high-speed camera measurement blast furnace material flow track |
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Application publication date: 20130102 |