CN114854917B - Blast furnace burden surface shape measurement and analysis method - Google Patents
Blast furnace burden surface shape measurement and analysis method Download PDFInfo
- Publication number
- CN114854917B CN114854917B CN202210314970.3A CN202210314970A CN114854917B CN 114854917 B CN114854917 B CN 114854917B CN 202210314970 A CN202210314970 A CN 202210314970A CN 114854917 B CN114854917 B CN 114854917B
- Authority
- CN
- China
- Prior art keywords
- burden
- furnace
- shape
- blast furnace
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004458 analytical method Methods 0.000 title abstract description 10
- 238000000691 measurement method Methods 0.000 title description 6
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012512 characterization method Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 102
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000011449 brick Substances 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004441 surface measurement Methods 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000013507 mapping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2300/00—Process aspects
- C21B2300/04—Modeling of the process, e.g. for control purposes; CII
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a blast furnace burden surface shape measuring and analyzing method, and relates to the technical field of blast furnace ironmaking. The invention relates to a method for measuring and analyzing the shape of a blast furnace burden surface, which comprises the steps of measuring the surface space position of the burden on the upper part of a furnace roof by adopting a three-dimensional distance measuring instrument to obtain the surface and space position data of the burden in the furnace roof, and processing and analyzing the measured data to form a burden surface shape point cloud picture and a burden surface longitudinal section shape picture of the burden to quantify the shape parameters of the burden on the upper part of the furnace roof; according to key characterization parameters of a burden surface shape contour line formed by normal burden distribution of the blast furnace, the burden distribution effect of the blast furnace can be basically reflected, and further, corresponding measures are taken to adjust a burden distribution system, so that a supporting basis is provided for rapid blast furnace ventilation and subsequent improved burden distribution adjustment, and the defects of the conventional burden surface measurement and analysis method are overcome.
Description
Technical Field
The invention relates to the technical field of blast furnace ironmaking, in particular to a blast furnace burden surface shape measuring and analyzing method.
Background
The main measure of the upper part regulation of the operation of the blast furnace is the regulation of a material distribution system, wherein the shape of the material level of the blast furnace is the direct expression of the effect of regulating the material distribution system at the upper part of the blast furnace, and the stable operation and the technical and economic indexes of the blast furnace are directly affected. In the actual production of the blast furnace, the blast furnace material distribution operation is continuously carried out, the material distribution chute is always in a rotating state, and the inside of the blast furnace is in a high-temperature and high-dust closed environment, so that the complete shape of the dynamic material surface in the production of the blast furnace is difficult to obtain. At present, large and medium-sized blast furnaces at home and abroad are generally provided with a furnace top infrared camera and a laser beam, so that the shape of a material surface can be qualitatively monitored on line or the shape of the material surface with a specific section can be qualitatively analyzed, but the shape of the whole material surface required by a blast furnace operator cannot be quantified. In view of the difficulty in acquiring the dynamic burden surface shape parameters of the blast furnace, a blast furnace operator is very concerned about the shape of the damping down burden surface during the maintenance of the blast furnace, and according to the shape parameters of the damping down burden surface, the effect of the previous burden surface system can be summarized, guidance is provided for burden surface adjustment after the blast furnace is winded, and the subsequent burden surface system is corrected.
With the development and progress of mapping technology and equipment, the integrity of the shape mapping of the blast furnace damping down burden surface is further improved. However, on the other hand, no unified method for expressing and describing the shape of the charge level by using numerical values exists at present, and a blast furnace operator is very concerned about meaning corresponding to the shape parameters of the charge level so as to effectively take corresponding blast furnace operation regulation measures and promote long-period stable operation of the blast furnace.
Through searching, the application of infrared imaging technology at furnace tops of furnaces, namely' Zhang Lili, ansteel, zhang Zhigang, wang Sutao, xuexian and Xuan Ganggao, hebei metallurgy, total 162, 6 in 2007 and P33-36 are disclosed as an infrared material level measurement technology which indirectly evaluates the condition of a material level by measuring the temperature of the material level through the infrared technology, but only can measure the infrared temperature of the material level and cannot calculate the shape of the material level, so the technology cannot be calculated as a material level measurement technology.
For another example, chinese patent application No.: 201420853174.8, filing date: the technology realizes the stable scanning measurement of the radial direction of the blast furnace roof at present, and can stably acquire the material level information of the blast furnace in the radial direction, but the method only can move in the radial direction of the blast furnace roof and is difficult to acquire the material level information of other directions of the blast furnace roof due to the limitations of structure and installation.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the defects of blast furnace burden level measurement in the prior art, the invention provides a blast furnace burden level measurement and analysis method, which comprises the steps of measuring the surface space position of the burden on the upper part of a furnace roof by adopting a three-dimensional distance measuring instrument to acquire the surface and space position data of the burden in the furnace roof, and then processing and analyzing the measured data to form a burden level shape point cloud picture and a burden level longitudinal section shape picture of the burden to quantify the shape parameters of the burden on the upper part of the furnace roof, thereby effectively adopting corresponding blast furnace operation regulation measures, improving and optimizing the burden level shape and promoting long-period stable operation of the blast furnace.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the method for measuring and analyzing the surface shape of the blast furnace burden comprises the steps of opening an access door of the furnace top during the damping-down overhaul of the blast furnace, and fixing a three-dimensional distance measuring instrument at a proper position above the access door on a furnace top overhaul platform by adopting a bracket, so that the three-dimensional distance measuring instrument can scan the whole burden surface of the furnace burden and is not influenced by high temperature and dust in the blast furnace; and measuring the surface space position of the furnace burden at the upper part of the furnace roof by a three-dimensional distance measuring instrument so as to acquire the surface and space position data of the furnace burden in the furnace roof.
According to a further technical scheme, the bracket comprises a horizontally arranged cross beam, the three-dimensional distance measuring instrument is fixedly arranged at one end of the cross beam, a tripod is movably arranged in the middle of the cross beam through a universal ball or a bearing, the tripod is arranged on a furnace top overhauling platform, and the cross beam can be adjusted in the horizontal direction and the vertical direction by taking the tripod as a fulcrum so as to adjust the horizontal direction and the vertical direction of the three-dimensional distance measuring instrument arranged on the cross beam; the tripod is multistage telescopic, and the height of crossbeam fulcrum department can be adjusted for the support can be adjusted in height, level and three direction dimension of perpendicular, so that after fixing three-dimensional ranging instrument in the appropriate position above the access door, can make three-dimensional ranging instrument scan range finding to the level and the vertically space on furnace roof upper portion, can prevent effectively that high temperature dust smoke in the furnace roof from damaging the instrument again.
According to a further technical scheme, the three-dimensional distance measuring instrument is a three-dimensional scanning distance measuring instrument or a depth camera, and is started through a remote controller to scan and measure the space in the range of 0-360 degrees horizontally and 0-270 degrees vertically and is used for acquiring the space position data of the surface of an object in the furnace top.
The method for analyzing the shape of the blast furnace burden surface is characterized in that data measured by a three-dimensional distance measuring instrument are processed and analyzed to quantify shape parameters of the burden of the upper part of the furnace roof, a burden surface shape point cloud chart and a burden surface longitudinal section shape chart of the burden are formed, and after the shape measurement result of the blast furnace burden surface is analyzed through the burden surface shape point cloud chart and the burden surface longitudinal section shape chart, the burden surface shape parameters of the burden are quantified, so that a supporting basis is provided for rapid blast furnace breeze and subsequent improved burden distribution adjustment.
According to a further technical scheme, the charge level shape point cloud image comprises a color block depth scale which is arranged vertically or horizontally and used for marking the charge level, the position of a space point obtained through scanning is displayed by using a 3D coordinate, and position height information is represented by using different colors; the color block depth scale comprises a furnace wall and a charge level color block which are sequentially arranged from outside to inside, wherein a plurality of tuyere number positions, a port number position and an access door position are arranged on the periphery of the furnace wall at equal intervals along the circumferential direction of the furnace wall, so that the mutual position relationship between the charge level shape of the blast furnace and the characteristic square point of the blast furnace is shown by using a graphic representation, and the expression is more visual.
According to a further technical scheme, a cross temperature measuring rod is arranged in the furnace wall and is arranged above the material surface color block and used for measuring the gas temperature distribution in the furnace top.
According to a further technical scheme, the longitudinal section shape graph of the burden surface comprises a section graph obtained by longitudinally cutting the burden material, and specifically comprises a section which is obtained by longitudinally obtaining the cross section shape of the burden material after connecting wires of the corresponding tuyere number positions at the position of the access door and the tuyere number positions radially opposite to the circumference of the tuyere number positions, namely, a north-south longitudinal section, and a section which is perpendicular to the north-south longitudinal section and passes through the center of the burden surface, namely, a east-west longitudinal section.
According to the further technical scheme, the section obtained after the longitudinal sectioning of the furnace burden is positioned at the part between the adjacent cross temperature measuring rods, and the section passes through the center of the material surface of the furnace burden, and the cross temperature measuring rods have an influence on the falling point of the furnace burden, so that the selection of the material surface right below the position of the cross temperature measuring rods is avoided.
According to the technical scheme, if the lowest position of the material level deviates from the material level shape point cloud chart by more than 1m (the center of a material level color block) and deviates from the north-south direction and the east-west direction by more than 0.5m, a longitudinal section is selected, and the longitudinal section passes through the lowest position of the material level and the center of the material level (the center of the material level color block) so as to better reflect the shape of the lowest position of the material level.
According to a further technical scheme, the section comprises a region surrounded by a burden surface depth formed by longitudinal sectioning of furnace burden and a burden surface shape contour line formed by normal burden distribution of a blast furnace, wherein the burden surface depth takes the upper edge of a furnace throat steel brick wall as a zero point, and is the same as the zero stockline position in the production of the blast furnace; according to key characterization parameters of the material level shape contour line, the material distribution effect of the blast furnace can be basically reflected, and further corresponding measures are taken to carry out material distribution system adjustment, wherein the key characterization parameters of the material level shape contour line comprise depth at a material level high point, material level platform width, material level high point-to-furnace throat steel brick distance, center funnel bottom depth, center funnel bottom-to-center line distance and center funnel material level included angle; the width of the material level platform refers to the distance between a horizontal line with the depth of 100mm downwards at the material level high point and the intersection points of two sides of the material level high point.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) The invention relates to a method for measuring and analyzing the shape of a blast furnace burden surface, which comprises the steps of measuring the surface space position of the burden on the upper part of a furnace roof by adopting a three-dimensional distance measuring instrument to acquire the surface and space position data of the burden in the furnace roof, processing and analyzing the measured data to form a burden surface shape point cloud picture and a burden surface longitudinal section shape picture of the burden, and quantifying the shape parameters of the burden on the upper part of the furnace roof, thereby providing a supporting basis for rapid blast furnace breeze and subsequent improved burden distribution regulation, and further facilitating a blast furnace operator to adopt corresponding blast furnace operation regulation measures to improve and optimize the burden surface shape so as to solve the defects of the current burden surface measurement and analysis;
(2) According to the blast furnace burden surface shape measuring and analyzing method, during blast furnace damping-down overhaul, the overhaul door of the furnace roof is opened, the three-dimensional distance measuring instrument is fixed at a proper position above the overhaul door by adopting the bracket on the furnace roof overhaul platform, and the bracket can be adjusted in three dimensions of height, horizontal and vertical directions, so that after the three-dimensional distance measuring instrument is fixed at a proper position above the overhaul door, the three-dimensional distance measuring instrument can scan and measure the horizontal and vertical spaces at the upper part of the furnace roof, and the instrument can be effectively prevented from being damaged by high-temperature and high-dust smoke dust in the furnace roof;
(3) The invention relates to a blast furnace burden surface shape measurement and analysis method, wherein a burden surface shape point cloud picture comprises a color block depth scale which is vertically or transversely arranged and marks a burden surface, the position of a space point obtained by scanning is displayed by using 3D coordinates, and position height information is represented by different colors, and the orientations of an access door, a cross temperature measuring rod, a tuyere number and a iron port number are marked in the burden surface shape point cloud picture, so that the mutual position relation between the blast furnace burden surface shape and a blast furnace characteristic square point is visually represented;
(4) According to the method for measuring and analyzing the surface shape of the blast furnace burden, the cross temperature measuring rod is arranged in the furnace wall and above the burden surface color block, so that the gas temperature distribution in the furnace roof is measured, the cross section obtained after the longitudinal sectioning of the burden is positioned at the part between the adjacent cross temperature measuring rods, and the cross section passes through the center of the burden surface, so that the burden surface right below the cross temperature measuring rod is prevented from being selected, and the influence of the cross temperature measuring rod position on the falling point of the burden is avoided;
(5) According to the method for measuring and analyzing the surface shape of the blast furnace, two longitudinal sections of the material surface are generally selected, and one longitudinal section passes through a corresponding wind port number and a wind port number with opposite circumferences in radial directions at the middle position of the access door, namely, the longitudinal sections in the north-south direction; the other longitudinal section is vertical to the north-south longitudinal section and passes through the center of the material surface, namely the east-west longitudinal section; if the lowest position of the material level deviates from the material level shape point cloud picture by more than 1m and deviates from the cross section line of the north-south direction and the east-west direction by more than 0.5m, a longitudinal section is selected, and passes through the lowest position of the material level and the center of the material level so as to better reflect the shape of the lowest position of the material level;
(5) According to the method for measuring and analyzing the shape of the blast furnace burden surface, the section comprises a burden surface depth formed by longitudinally cutting the burden material and an area surrounded by a burden surface shape outline formed by normal burden distribution of the blast furnace, the burden distribution effect of the blast furnace can be basically reflected according to key characterization parameters of the burden surface shape outline, and further, the burden distribution system is regulated by adopting corresponding measures, wherein the key characterization parameters of the burden surface shape outline include the depth of a burden surface high point, the width of a burden surface platform, the distance from the burden surface high point to a furnace throat steel brick, the depth of the bottom of a central funnel, the distance from the bottom of the central funnel to the central line and the burden surface included angle of the central funnel.
Drawings
FIG. 1 is a layout diagram of a blast furnace burden surface shape measurement and analysis method employing the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of a charge level shape point cloud image employing the blast furnace charge level shape measurement and analysis method of the present invention;
FIG. 4 is an isometric view of the charge level shape point cloud of FIG. 3;
FIG. 5 is a longitudinal cross-sectional view of the charge level of FIG. 3 in the north-south direction;
fig. 6 is a east-west longitudinal section of the charge level of fig. 3.
In the figure: 1-furnace top; 2-charging; 3-a cross temperature measuring rod; 4-a furnace top overhaul platform; 5-a bracket; 6-a three-dimensional distance measuring instrument; 7-an access door; 21-color block depth scale; 22-furnace wall; 23-a material surface color block; 24-cross temperature measuring rod; 25-access door orientation; 26-tuyere number azimuth; 27-port number orientation; 31-the upper edge of the steel brick of the furnace throat; 32-furnace throat steel brick furnace wall; 33-depth at the high point of the material surface; 34-the distance from the high point of the material surface to the steel brick of the furnace throat; 35-the height from the high point of the material surface to the low point of the edge material surface; 36, edge material surface stacking angle; 37-tuyere number azimuth; 38-width of the material level platform; 39-a burden surface shape contour line; 40, a material surface stacking angle of a central hopper; 41-horizontal distance from the high point of the material surface to the bottom of the central funnel; 42-distance between high points of the material surface; 43-the center line of the material surface; 44-center funnel bottom to center line distance; 45-the height from the high point of the material surface to the bottom of the central funnel; 46, forming a material level included angle of the central funnel; 47-depth of bottom of center funnel.
Detailed Description
For a further understanding of the present invention, the invention is described in detail with reference to the drawings.
Example 1
In the blast furnace burden surface shape measuring method of the embodiment, as shown in fig. 1-2, during blast furnace damping down and overhauling, an access door 7 of a furnace roof 1 is opened, a three-dimensional distance measuring instrument 6 is fixed at a proper position above the access door 7 on a furnace roof overhauling platform 4 by adopting a bracket 5, the bracket 5 comprises a horizontally arranged cross beam, the three-dimensional distance measuring instrument 6 is fixedly arranged at one end of the cross beam, a tripod is movably arranged in the middle of the cross beam through a universal ball or a bearing, the tripod is arranged on the furnace roof overhauling platform 4, and the cross beam can be adjusted in horizontal and vertical directions by taking the tripod as a fulcrum so as to adjust the horizontal and vertical directions of the three-dimensional distance measuring instrument 6 arranged on the cross beam; the tripod is multi-stage telescopic, the height of a beam fulcrum can be adjusted, so that the bracket 5 can be adjusted in three dimensions of height, horizontal and vertical directions, and after the three-dimensional distance measuring instrument 6 is fixed at a proper position above the access door 7, the three-dimensional distance measuring instrument 6 can scan and measure the horizontal and vertical spaces at the upper part of the furnace top 1, and the damage of high-temperature high-dust smoke dust in the furnace top 1 to the instrument can be effectively prevented; the surface space position of the furnace burden 2 at the upper part of the furnace roof 1 is measured by a three-dimensional distance measuring instrument 6 so as to acquire the surface and space position data of the furnace burden 2 in the furnace roof 1.
In this embodiment, the three-dimensional distance measuring instrument 6 is a three-dimensional scanning distance measuring instrument or a depth camera, and the three-dimensional distance measuring instrument 6 is started by a remote controller to scan and measure the space in the range of 0-360 ° horizontal and 0-270 ° vertical, so as to obtain the spatial position data of the object surface inside the furnace top 1.
Example 2
The basic structure of the blast furnace burden surface shape analysis method of this embodiment is the same as that of embodiment 1, and the difference and improvement are that: as shown in fig. 3 to 4, the data measured by the three-dimensional distance measuring instrument 6 are processed and analyzed to quantify the shape parameters of the furnace burden 2 at the upper part of the furnace roof 1, so as to form a burden surface shape point cloud picture and a burden surface longitudinal section shape picture of the furnace burden 2, and after the blast furnace burden surface shape measurement result is analyzed through the burden surface shape point cloud picture and the burden surface longitudinal section shape picture, the burden surface shape parameters of the furnace burden 2 are quantified, so as to provide a supporting basis for rapid blast furnace breeze and subsequent improved burden distribution adjustment.
The cloud image of the material level shape point comprises a color block depth scale 21 which is arranged vertically or horizontally and used for marking the material level, the position of a space point obtained by scanning is displayed by using 3D coordinates, and the position height information is represented by using different colors; one side of the color block depth scale 21 is a overlook structure diagram of the inside of the furnace top 1 obtained by scanning of a three-dimensional scanning range finder, the color block depth scale comprises a furnace wall 22 and a material surface color block 23 which are sequentially arranged from outside to inside, a cross temperature measuring rod 24 is arranged in the furnace wall 22, and the cross temperature measuring rod 24 is arranged above the material surface color block 23 and is used for measuring the gas temperature distribution in the furnace top 1; the periphery of the furnace wall 22 is provided with (1) parts in a counter-clockwise manner at equal intervals along the circumferential directionAn access door azimuth 25 corresponding to the circumferential azimuth of the access door 7 and +.>The positions of the air outlets in the circumferential direction are the same, and are all on the south side of the material surface shape point cloud picture, namely right below; a port number azimuth 27 is arranged between two adjacent port number azimuth 26, so that the blast furnace charge level shape and the blast furnace charge level shape are shown by using a graphic representationThe mutual position relation among the characteristic square points of the blast furnace ensures that the expression is more visual.
Example 3
The basic structure of the blast furnace burden surface shape analysis method of this embodiment is the same as that of embodiment 2, and the difference and improvement are that: as shown in FIGS. 5 to 6, the longitudinal cross-sectional shape of the charge level includes a cross-sectional view of the charge 2 obtained by longitudinally sectioning it, in particular, including the correspondence at the access door orientation 25The cross section shape of the furnace charge 2, namely the longitudinal section in the north-south direction, is longitudinally obtained after the serial number of the furnace charge 26 and the serial number of the furnace charge 26 which are opposite to each other in the radial direction are connected, and the cross section shape is also the longitudinal section in the south-north direction, and the cross section is also the cross section with the serial numbers of the furnace charge 26 and the serial numbers of the furnace charge>The cross section obtained by longitudinal sectioning the number of the tuyere number 26 at the position perpendicular to the connecting line of the charge level center of the furnace charge 2, namely, the east-west longitudinal cross section.
In this embodiment, the cross section obtained after the longitudinal sectioning of the burden 2 is located at the portion between the adjacent cross temperature measuring bars 24, and the cross section passes through the center of the burden surface of the burden 2, and since the cross temperature measuring bars 24 have an influence on the drop point of the burden, the selection of the burden surface directly under the cross temperature measuring bar position 24 should be avoided.
Further, if it is judged from the cloud chart of the shape point of the material surface that the lowest position of the material surface deviates from the center of the material surface (the center of the circle of the material surface color block 23) by more than 1m and the cross-sectional line deviates from the north-south direction and the east-west direction by more than 0.5m, a longitudinal section is selected, which passes through the lowest position of the material surface and the center of the material surface (the center of the circle of the material surface color block 23) so as to better reflect the shape of the lowest position of the material surface.
Example 4
The basic structure of the blast furnace burden surface shape analysis method of this embodiment is the same as that of embodiment 3, and the difference and improvement are that: as shown in fig. 6, the section includes a region surrounded by a burden surface depth formed by the longitudinal sectioning of the burden 2 and a burden surface shape contour line 39 formed by the normal burden distribution of the blast furnace, wherein the burden surface depth takes a throat steel brick upper edge 31 of a throat steel brick furnace wall 32 as a zero point, and is the same as a zero stockline position in the blast furnace production. The main characterizing parameters of the blast furnace burden surface shape contour 39 include a burden surface high point depth 33, a burden surface high point to furnace throat steel brick distance 34, a burden surface high point to edge burden surface low point height 35, a burden surface high point to center funnel bottom horizontal distance 41, a burden surface high point to center funnel bottom height 45, a burden surface platform width 38, a burden surface high point to inter-point distance 42, a burden surface centerline 43, a center funnel bottom to centerline distance 44, a center funnel bottom depth 47, a center funnel burden surface stacking angle 40, a center funnel burden surface included angle 46, and an edge burden surface stacking angle 36.
The depth 33 at the high level, the width 38 of the platform, the distance 34 from the high level to the throat, the depth 47 from the bottom of the central funnel, the distance 44 from the bottom of the central funnel to the central line, and the included angle 46 between the bottom of the central funnel and the level of the central funnel are key characterization parameters of the profile 39 of the shape of the level, as shown in table 1, according to the key characterization parameters of the profile 39 of the shape of the level, the effect of the burden distribution of the blast furnace can be basically reflected, and corresponding measures are taken to adjust the burden distribution system. And (3) adjusting measures: if the distance 34 between the high point of the material level and the steel brick of the furnace throat is too small (less than 0.5m, according to the actual blast furnace regulation, the material level platform is close to the edge, the inclination angle of the distribution chute can be reduced, and the high point of the material level platform is gradually and properly adjusted towards the center.
As can be seen from Table 1, the entire material surface is relatively regular. The material level center funnel is obvious, the bottom is close to the material level center line 43, and the depth 47 of the bottom of the center funnel is 2.58m; the center funnel level angle 46 is 142.8 °.
TABLE 1
In this embodiment, the width 38 of the material level platform refers to the distance between the horizontal line with the depth 33 of 100mm downward at the high point of the material level and the intersection points of two sides of the high point of the material level; center funnel bottom depth 47 = depth 33 at the level high point + center funnel bottom height 45, also measured from the cross-sectional view; the included angle 46 of the material surface of the central funnel is 180 degrees, the stacking angle of the material surface of the central funnel is 40 means multiplied by 2, and the included angle can be measured from a sectional view.
The material level shape parameters can be used for describing the basic material level shape of the inverted W-shaped blast furnace burden distribution, and other material level shapes can also be used for carrying out characterization parameter quantitative analysis by referring to the method.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (6)
1. A method for measuring and analyzing the shape of a blast furnace charge level is characterized in that: measuring the surface space position of the furnace burden (2) at the upper part of the furnace roof (1) through a three-dimensional distance measuring instrument (6), and processing and analyzing the data measured by the three-dimensional distance measuring instrument (6) to quantify the shape parameters of the furnace burden (2) at the upper part of the furnace roof (1) so as to form a burden surface shape point cloud picture and a burden surface longitudinal section shape picture of the furnace burden (2);
the charge level shape point cloud picture comprises a color block depth scale (21) which is vertically or transversely arranged and used for marking a charge level, one side of the color block depth scale (21) is a overlook structure diagram of the inside of a furnace top (1) which is scanned and obtained by a three-dimensional scanning range finder, the color block cloud picture comprises a furnace wall (22) and charge level color blocks (23) which are sequentially arranged from outside to inside, a plurality of air port number positions (26), iron port number positions (27) and access door positions (25) which are sequentially distributed are arranged on the periphery of the furnace wall (22) at equal intervals along the circumferential direction of the furnace wall, and the air port number positions and the access door positions are used for marking the reference positions of the charge level;
the longitudinal section shape diagram of the burden surface comprises a section diagram obtained by longitudinally cutting the burden material (2), and specifically comprises a southerly cross section of the burden material (2) obtained by longitudinally cutting after connecting a corresponding tuyere number azimuth (26) at an access door azimuth (25) and a tuyere number azimuth (26) with the circumference of the tuyere number azimuth being opposite to the circumference of the tuyere number azimuth, and a southerly cross section of the burden material obtained by longitudinally cutting at a position vertical to the connecting line opposite to the access door azimuth (25); if the lowest position of the charge (2) deviates from the center of the charge by more than 1m and the section lines deviating from the north-south direction and the east-west direction by more than 0.5m, selecting a longitudinal section additionally, wherein the longitudinal section passes through the lowest position of the charge and the center of the charge;
the section obtained after the longitudinal sectioning of the furnace burden (2) comprises a material level depth formed after the longitudinal sectioning of the furnace burden (2) and an area surrounded by a material level shape contour line (39) formed by normal material distribution of a blast furnace, wherein the material level depth takes a furnace throat steel brick upper edge (31) of a furnace throat steel brick furnace wall (32) as a zero point; and (3) according to key characterization parameters of the material level shape contour line (39), adopting corresponding measures to adjust a material distribution system, wherein the key characterization parameters of the material level shape contour line (39) comprise depth (33) at a material level high point, material level platform width (38), material level high point-to-furnace throat steel brick distance (34), central funnel bottom depth (47), central funnel bottom-to-central line distance (44) and central funnel material level included angle (46).
2. The method for measuring and analyzing the shape of the charge level of a blast furnace according to claim 1, wherein: the furnace wall (22) is internally provided with a cross temperature measuring rod (24), and the cross temperature measuring rod (24) is arranged at the position above the charge level color block (23).
3. The method for measuring and analyzing the shape of the charge level of a blast furnace according to claim 2, wherein: the section obtained after the longitudinal sectioning of the furnace burden (2) is positioned at the part between the adjacent cross temperature measuring rods (24), and the section passes through the center of the burden surface of the furnace burden (2).
4. A method for measuring and analyzing the shape of the charge level of a blast furnace according to any one of claims 1 to 3, wherein: the three-dimensional distance measuring instrument (6) is fixed at a proper position above the access door (7) through the bracket (5).
5. The method for measuring and analyzing the shape of the charge level of a blast furnace according to claim 4, wherein: the support (5) comprises a horizontally arranged cross beam, a tripod is movably mounted in the middle of the cross beam, and the tripod is of a multi-stage telescopic structure and is arranged on the furnace top overhaul platform (4).
6. The method for measuring and analyzing the shape of the charge level of a blast furnace according to claim 5, wherein: the three-dimensional distance measuring instrument (6) is a three-dimensional scanning distance measuring instrument or a depth camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210314970.3A CN114854917B (en) | 2022-03-29 | 2022-03-29 | Blast furnace burden surface shape measurement and analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210314970.3A CN114854917B (en) | 2022-03-29 | 2022-03-29 | Blast furnace burden surface shape measurement and analysis method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114854917A CN114854917A (en) | 2022-08-05 |
| CN114854917B true CN114854917B (en) | 2024-04-12 |
Family
ID=82628639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210314970.3A Active CN114854917B (en) | 2022-03-29 | 2022-03-29 | Blast furnace burden surface shape measurement and analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114854917B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405330A (en) * | 2001-08-13 | 2003-03-26 | 宝山钢铁股份有限公司 | Blast furnace top full-charge-level millimeter-wave three-dimensional imaging instrument |
| JP2006112966A (en) * | 2004-10-15 | 2006-04-27 | Nippon Steel Corp | Method and apparatus for measuring surface shape of charged material in blast furnace |
| CN101256069A (en) * | 2007-03-01 | 2008-09-03 | 中国钢铁股份有限公司 | Method for measuring high furnace burden face appearance and material flow track using laser ranging technique |
| JP2011002241A (en) * | 2009-06-16 | 2011-01-06 | Nippon Steel Corp | Device and method for measuring profile of burden in blast furnace |
| CN105039621A (en) * | 2015-08-19 | 2015-11-11 | 南京钢铁股份有限公司 | Burden surface profile measurement method for blast furnace |
| CN108441594A (en) * | 2018-06-26 | 2018-08-24 | 马钢(集团)控股有限公司 | Charge level device and its measurement method in a kind of portable laser detection State of Blast Furnace |
| CN112126731A (en) * | 2020-09-17 | 2020-12-25 | 马鞍山钢铁股份有限公司 | Method and system for measuring chute angle of blast furnace |
| CN113790675A (en) * | 2021-07-28 | 2021-12-14 | 贵阳铝镁设计研究院有限公司 | Method for detecting furnace building result based on itinerant scanning of single laser line profiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7176561B2 (en) * | 2018-03-28 | 2022-11-22 | Ｊｆｅスチール株式会社 | Blast furnace operation method |
-
2022
- 2022-03-29 CN CN202210314970.3A patent/CN114854917B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405330A (en) * | 2001-08-13 | 2003-03-26 | 宝山钢铁股份有限公司 | Blast furnace top full-charge-level millimeter-wave three-dimensional imaging instrument |
| JP2006112966A (en) * | 2004-10-15 | 2006-04-27 | Nippon Steel Corp | Method and apparatus for measuring surface shape of charged material in blast furnace |
| CN101256069A (en) * | 2007-03-01 | 2008-09-03 | 中国钢铁股份有限公司 | Method for measuring high furnace burden face appearance and material flow track using laser ranging technique |
| JP2011002241A (en) * | 2009-06-16 | 2011-01-06 | Nippon Steel Corp | Device and method for measuring profile of burden in blast furnace |
| CN105039621A (en) * | 2015-08-19 | 2015-11-11 | 南京钢铁股份有限公司 | Burden surface profile measurement method for blast furnace |
| CN108441594A (en) * | 2018-06-26 | 2018-08-24 | 马钢(集团)控股有限公司 | Charge level device and its measurement method in a kind of portable laser detection State of Blast Furnace |
| CN112126731A (en) * | 2020-09-17 | 2020-12-25 | 马鞍山钢铁股份有限公司 | Method and system for measuring chute angle of blast furnace |
| CN113790675A (en) * | 2021-07-28 | 2021-12-14 | 贵阳铝镁设计研究院有限公司 | Method for detecting furnace building result based on itinerant scanning of single laser line profiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114854917A (en) | 2022-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5204955B2 (en) | Scanning method for 3D laser scanner | |
| CN109613546B (en) | Three-dimensional measurement method and measurement device for converter furnace chamber based on three-dimensional laser radar auxiliary positioning | |
| CN111174721A (en) | Hoisting mechanical structure deformation detection method based on three-dimensional laser scanning | |
| WO2005113172A1 (en) | Method and apparatus for optimizing forging processes | |
| CN101776437B (en) | Calibration technology for vision sub-pixel of embedded type machine with optical path adjustment | |
| CN114854917B (en) | Blast furnace burden surface shape measurement and analysis method | |
| CN111457848A (en) | Method and system for measuring displacement through coordinate change between adjacent monitoring points | |
| CN113554667A (en) | Three-dimensional displacement detection method and device based on image recognition | |
| CN114234819B (en) | Automatic detection method for quality of steel bar part based on three-dimensional laser scanning | |
| CN108917711B (en) | Tunnel engineering three-dimensional laser scanning sectional measurement method and system | |
| CN102809283B (en) | Method for determining material temperature field in rotary kiln | |
| CN107657609B (en) | Method for obtaining perforation density of target plate based on laser scanning | |
| KR20210124481A (en) | Inspection apparatus and method for coke oven shaft furnace, and coke oven shaft furnace method | |
| CN109948205B (en) | Joint surface roughness calculation method based on three-dimensional morphological description | |
| Głowacki et al. | Analysis of cooling tower’s geometry by means of geodetic and thermovision method | |
| CN111678438B (en) | Scale body displacement early warning method and system | |
| CN114170400A (en) | Hydraulic support group space straightness measuring and adjusting method based on three-dimensional point cloud | |
| CN114485438A (en) | Method for measuring distance between round stand columns of large module steel structure | |
| CN113987304A (en) | Three-dimensional furnace hearth residual thickness visualization method and system | |
| JP5232269B2 (en) | How to measure material flow width | |
| CN102779341B (en) | Novel method for identifying support position in pit construction process | |
| CN111380475A (en) | Truss hanging rail inspection method based on three-dimensional scanner technology | |
| CN102706280A (en) | Automatic centering method based on laser measurement | |
| CN113609936B (en) | Method for determining radial descending speed distribution of furnace burden at upper part of blast furnace | |
| CN112066893B (en) | Method and device for measuring height of key cap of keyboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |