CN112964363A - Zinc slag positioning method and device for zinc pot - Google Patents
Zinc slag positioning method and device for zinc pot Download PDFInfo
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- CN112964363A CN112964363A CN202110103978.0A CN202110103978A CN112964363A CN 112964363 A CN112964363 A CN 112964363A CN 202110103978 A CN202110103978 A CN 202110103978A CN 112964363 A CN112964363 A CN 112964363A
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- 239000002893 slag Substances 0.000 title claims abstract description 188
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 239000011701 zinc Substances 0.000 title claims abstract description 137
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000001931 thermography Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000010586 diagram Methods 0.000 claims description 35
- 238000004590 computer program Methods 0.000 claims description 10
- 238000013507 mapping Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 239000013049 sediment Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
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- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 230000005574 cross-species transmission Effects 0.000 description 1
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- 239000012636 effector Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
- G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
- G01J5/485—Temperature profile
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a zinc dross positioning method and a device of a zinc pot, wherein the method comprises the following steps: acquiring a thermal imaging graph of the surface of molten zinc of a zinc pot; obtaining a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph; determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points; and carrying out slag salvaging on the slag salvaging area. The invention can carry out full-coverage identification on the surface of the zinc liquid, the determined slag dragging area is more complete and accurate, and the slag dragging efficiency and quality are improved.
Description
Technical Field
The invention relates to the technical field of steel production, in particular to a method and a device for positioning zinc dross in a zinc pot.
Background
Dross is the most common and dominant zinc pot defect on the surface of a continuous hot-dip galvanized strip steel coating. The zinc slag respectively presents three forms of surface slag, suspension scum and bottom slag according to different specific gravity. Effectively controlling the suspension scum in the zinc liquid, timely removing the surface scum in the V-shaped area of the zinc pot and the zinc scum at other hot-dip affected positions, and preventing the bottom scum and the suspension scum in the hot-dip area from being converted and overflowed are the key points of the unit for producing the automobile plate with high-grade surface quality. In the production process of hot dip pure zinc (GI), the bottom slag and the suspended slag can be converted into the surface slag in a process adjustment mode, so the slag salvaging operation aiming at the surface slag is an effective method for controlling the defects of the zinc slag.
At present, five-axis or six-axis industrial robots or mechanical arms are adopted to replace the traditional manual slag salvaging operation. For example, a slag dragging robot using method (patent number: 201710758772.5) introduces a slag dragging mechanical arm capable of automatically moving along a guide rail, free programming can be carried out according to the field requirement, and the automatic slag removing and automatic slag bucket positioning operation in a narrow space can be completed through a mechanical arm end effector with 5-6 degrees of freedom, so that the unmanned slag dragging operation in a zinc pot area can be realized. The robot adopts a reciprocating operation mode and is used for covering the liquid level of the whole slag dragging area. The operation mode has the defects of poor slag salvaging flexibility, low efficiency and serious slag salvaging condition in the slag salvaging process, thereby causing the great increase of zinc consumption in the process cost.
Disclosure of Invention
In view of the above problems, the invention provides a method and a device for positioning zinc dross in a zinc pot, which can perform full-coverage identification on the surface of zinc liquid, ensure that the determined dross dragging area is more complete and accurate, and improve the dross dragging efficiency and quality.
In a first aspect, the present application provides the following technical solutions through an embodiment:
a zinc dross positioning method of a zinc pot comprises the following steps:
acquiring a thermal imaging graph of the surface of molten zinc of a zinc pot; obtaining a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph; determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points; and carrying out slag salvaging on the slag salvaging area.
Optionally, the obtaining a plurality of core low temperature points of the molten zinc surface according to the thermal imaging graph includes:
according to the thermal imaging graph, obtaining an isothermal diagram of the surface of the molten zinc; determining a plurality of low temperature points according to the isotherm diagram; and determining the core low temperature point according to the temperature of the plurality of low temperature points.
Optionally, the determining a slag dragging area on the surface of the molten zinc according to the plurality of core low temperature points includes:
acquiring the diameter of the slag spoon; determining the temperature range of slag salvaging according to the isotherm diagram and the diameter of the spoon; and determining the slag dragging area according to the plurality of core low temperature points and the temperature range.
Optionally, the determining the slag dragging area according to the plurality of core low temperature points and the temperature range includes:
acquiring an operation range during slag salvaging; dividing the operation range according to the diameter of the spoon to obtain a plurality of region blocks; wherein each region block and the thermal imaging graph have a coordinate mapping relation; and determining the slag dragging area from the area blocks according to the core low temperature points and the temperature range.
Optionally, the number of slag dragging areas is less than or equal to 5.
Optionally, the dragging for the slag in the slag dragging area includes:
acquiring a first gradient difference between a temperature maximum value and a first temperature minimum value in the core low-temperature point; if the first gradient difference is larger than a preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point; and if the first gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
Optionally, the dragging slag of the slag dragging area according to the temperature of the core low temperature point includes:
according to the temperature of the core low-temperature point, carrying out slag salvaging on the slag salvaging area corresponding to the first temperature minimum value; acquiring a second gradient difference between a temperature maximum value and a second temperature minimum value in the remaining core low-temperature points; if the second gradient difference is larger than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point; and if the second gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
In a second aspect, based on the same inventive concept, the present application provides the following technical solutions through an embodiment:
a zinc dross positioning device of a zinc pot comprises:
the image acquisition module is used for acquiring a thermal imaging image of the surface of the molten zinc of the zinc pot; the low temperature point acquisition module is used for acquiring a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph; the positioning module is used for determining a slag salvaging area on the surface of the molten zinc according to the plurality of core low temperature points; and the slag dragging module is used for dragging slag in the slag dragging area.
Optionally, the low temperature point obtaining module is specifically configured to:
according to the thermal imaging graph, obtaining an isothermal diagram of the surface of the molten zinc; determining a plurality of low temperature points according to the isotherm diagram; and determining the core low temperature point according to the temperature of the plurality of low temperature points.
In a third aspect, based on the same inventive concept, the present application provides the following technical solutions through an embodiment:
a computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any of the first aspects.
According to the zinc dross positioning method and device for the zinc pot, provided by the embodiment of the invention, a thermal imaging picture of the surface of the zinc liquid of the zinc pot is obtained; then obtaining a plurality of core low temperature points on the surface of the molten zinc according to a thermal imaging graph; determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points; and finally, carrying out slag salvaging on the slag salvaging area. The slag dragging area is identified and positioned in a thermal imaging mode, the surface of the zinc liquid can be identified in a full-coverage mode, the determined slag dragging area is more complete and accurate, and the slag dragging efficiency and quality are improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of an exemplary automatic slag salvaging system in an embodiment of the present invention;
FIG. 2 is a flow chart of a method for positioning zinc dross in a zinc pot according to a first embodiment of the invention;
FIG. 3 illustrates an exemplary isotherm diagram in a first embodiment of the invention;
fig. 4 shows a schematic structural diagram of a zinc dross positioning device of a zinc pot provided by a second embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The implementation of the method for positioning the zinc dross in the zinc pot in the embodiment can be applied to an automatic dross salvaging system 100, as shown in fig. 1, the automatic dross salvaging system 100 as an example can include the following structure:
the thermal imaging device 101 can be installed above the zinc pot and used for obtaining a thermal imaging picture and realizing full coverage of the zinc pot during imaging. The thermal imaging device 101 may be a thermal infrared imager.
And a cooling device 102 for cooling the thermal imaging device 101. The working condition environment above the zinc pot is 60-70 ℃, the thermal imaging device 101 is cooled by the cooling device 102, and the thermal imaging device 101 can be effectively protected from being damaged. The vortex tube cooling technology can be adopted to realize the function of the cooling device 102, and the compact and simple structure of the whole system is ensured.
And the slag dragging robot 103 is used for dragging slag and can be realized by adopting a multi-shaft industrial mechanical arm.
And the processor 104 is used for finishing the start-stop and control work of the thermal imaging device 101, the cooling device 102, the slag dragging robot 103 and the like. For example, to control thermal imager settings, recording, measurement, auto focus, temperature data output, interrogation, and video stream recording, etc. In addition, an image processing module may be further included in the processor 104, and the image processing module is configured to perform processing and calculation on the thermal imaging map. The processor 104 may be a central processing unit, a single-chip, or the like.
The implementation process of the method of this embodiment should be continued with reference to the following specific embodiments:
first embodiment
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for positioning zinc dross in a zinc pot according to a first embodiment of the present invention, the method including:
step S10: and acquiring a thermal imaging picture of the surface of the molten zinc of the zinc pot.
In step S10, a thermal imaging map may be obtained by thermally imaging the surface of the molten zinc by a thermal imaging device. A thermal imaging device such as a thermal infrared imager. Preferably, the position of the thermal imaging is right above the zinc pot, so that the mapping between the thermal imaging map and the liquid level area in the zinc pot can be more accurate.
In the embodiment, other images of the thermal imaging graph are not adopted, so that the influence of a light source in a severe environment on site can be effectively avoided, and the mirror reflection phenomenon on the surface of the zinc liquid does not need to be considered. The thermal imaging method can be used for completely covering the surface of the molten zinc in the zinc pot, and the full coverage of the surface of the molten zinc is difficult to realize if a CCD (Charge Coupled Device) camera is used. Moreover, the zinc dross is accumulated by high-temperature viscous substances, the boundaries of the thick and thin zinc dross are not easy to be distinguished in a visible light mode, and therefore the dross dragging in a specific area cannot be realized. Therefore, in this embodiment, an infrared imaging mode is adopted to determine the slag dragging area.
Step S20: and obtaining a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph.
In step S20, the core low temperature point may be understood as a low temperature point of a different area in the thermal imaging map. Specifically, the step S20 can be implemented as follows:
firstly, an isothermal diagram of the surface of the molten zinc can be obtained according to a thermal imaging diagram, and the current temperature distribution condition of the surface of the molten zinc can be determined through the isothermal diagram. And then, according to the isotherm diagram, a plurality of low temperature points in the temperature curve diagram can be determined, and each low temperature point is a peak value in the isotherm diagram. The low temperature point can reflect the distribution condition of the zinc dross on the surface of the zinc liquid. Finally, determining a core low-temperature point according to the temperature of the plurality of low-temperature points; for example, the plurality of low temperature points may be sorted from small to large, and finally the smallest one or more low temperature points may be taken as the core low temperature point. Since the zinc dross covers the surface of the molten zinc, the core low temperature point can represent the thickest location of the zinc dross. In a common application scenario in this embodiment, the number of the core low-temperature points can be determined to be less than or equal to 5, so that a better slag salvaging effect can be ensured.
Step S30: and determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points.
In step S30, since the core low temperature point is determined on the thermographic or thermographic map, and the area on the thermographic or isothermic map corresponds to the area on the surface of the molten zinc, the area determined on the thermographic or isothermic map can be mapped to the surface of the molten zinc in a mapping manner, so as to perform slag salvaging. Further, in order to guarantee better sediment effect of dragging for, avoid dragging for the sediment in-process and can't predict zinc dross weight, drag for the sediment spoon when leading to dragging for the sediment at every turn and take place to spill over or not full condition, can specifically confirm through following embodiment that it is regional to drag for the sediment:
firstly, the diameter of the slag spoon is obtained. Then, determining the temperature range of slag salvaging according to the isotherm diagram and the diameter of the spoon; a certain proportional relation exists between the isotherm diagram and the actual surface of the molten zinc, and the diameter of the spoon can be converted into the target length in the proportion of the isotherm diagram. On the isotherm diagram, a target area is defined according to the isotherm with the core low temperature point as the center, and the maximum diameter of the target area should be less than or equal to the target length. When the maximum diameter of the target region is exactly equal to the target length, the temperature difference between the isotherm at the outermost periphery and the low temperature point of the core is the maximum value in the temperature range. And finally, determining a slag dragging area according to the plurality of core low temperature points and the temperature range. Each core low-temperature point corresponds to a slag dragging area, the size of the slag dragging area can be determined by determining any temperature gradient value from the temperature range, and the slag dragging area can be flexibly adjusted. In this embodiment, the temperature range can be controlled to be 3-5 ℃, so that the slag fishing area corresponding to the formed target area is more suitable for the slag spoon to fish slag, the slag spoon cannot overflow, and the slag spoon can be ensured to be filled as much as possible. For example, when 3 ℃ is determined from the temperature range as the temperature gradient value for slag fishing, it can be shown that all the areas within 3 ℃ of the temperature difference around the current core low-temperature point are slag fishing areas, as shown in fig. 3.
Further, when a mapping mode is adopted to obtain a slag dragging area, firstly, an operation range in slag dragging needs to be obtained; the operation range is the range of scum generated on the surface of the zinc liquid, and can also refer to the whole surface of the zinc liquid. Then, dividing the operation range according to the diameter of the spoon to obtain a plurality of region blocks; correspondingly, the same number of segmentations can be carried out on the thermal imaging graph; and each area block and the thermal imaging graph have a coordinate mapping relation. For example, the size of the thermal imaging map is a × B, the actual size of the imaging zinc pot is a × B, and the (x, y) area block on the thermal imaging map corresponds to the zinc pot, and x '═ x (a/a) and y' ═ y x (B/B), so that the coordinates (x ', y') of any position of the surface of the zinc liquid in the zinc pot can be accurately determined, and the establishment of the mapping relationship is realized. The area block can be a square area, for example, the round shape of the spoon mouth of the slag spoon is a circumscribed circle of the square area, or is larger than the circumscribed circle of the square area, so that the positioning slag spoon can be fully covered. The area block can also be a circular area, and the circular area is smaller than or equal to the round shape of the spoon mouth of the slag spoon. Can avoid carrying out too much segmentation to the working range like this, reduce location coordinate to drag for the sediment spoon and can make full use of drag for the capacity of sediment spoon when dragging for the sediment at every turn, reduce the treater calculated amount, improve efficiency. And finally, determining a slag dragging area from the plurality of area blocks according to the plurality of core low temperature points and the temperature ranges. That is to say, according to a plurality of core low temperature points and temperature ranges, an image area of slag salvaging is determined on the isothermal map or the thermal imaging map, and then a slag salvaging area corresponding to the image area of slag salvaging can be found on the surface of the molten zinc in a coordinate mapping mode. The accurate positioning slag fishing is realized. The number of the slag dragging areas is the same as the number of the core low temperature points, and the number of the slag dragging areas can be less than or equal to 5 corresponding to the above example.
Step S40: and carrying out slag salvaging on the slag salvaging area.
In step S40, the following specific implementation is provided to ensure the quality of slag dragging.
Step S41: a first gradient difference between a temperature maximum and a first temperature minimum in the core low temperature point is obtained.
In step S41, since the core low temperature point can reflect the thickness of the zinc dross, it can be determined whether the difference in the thickness of the current zinc dross is too large and the current zinc dross has a significantly thicker zinc dross through the first gradient difference.
Step S42: and if the first gradient difference is larger than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point.
In step S42, since the first gradient difference is greater than the preset temperature difference, it indicates that there is a thick dross area, and since the dross area is thick, it has strong adhesion, and if it is not cleaned in time, it will quickly generate aggregation effect, which seriously affects the quality of the molten zinc. In addition, the thinner zinc dross has less influence on the temperature, and an oxide film is formed on the surface of the zinc liquid by covering, so that a certain protection effect can be formed on the zinc liquid. Therefore, in the embodiment, when there is zinc dross with a large thickness difference, the slag dragging object is considered from the aspect of thickness preferentially rather than the area, so that a good slag dragging effect can be ensured.
The preset temperature difference can be set according to specific production requirements, and in the implementation, the preset temperature difference can be 7-15 ℃, and preferably 10 ℃. When the slag is fished, the slag can be fished according to the temperature of the low temperature point of the core from small to large, namely, the region with the thickest slag zinc is preferred.
Step S43: and if the first gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
In step S43, when the first gradient difference is smaller than the preset temperature difference, it indicates that the thicknesses of the zinc dross in the respective regions are all similar. At the moment, the zinc slag can be fished in a mode of decreasing the area from large to small, so that the slag can be fished quickly.
It should be noted that, after a determination is made based on the preset temperature difference, the above steps S42 and S43 may be executed correspondingly. In addition, if step S42 is executed first, the determination of the preset temperature difference and the gradient difference may be performed after the completion of slag salvaging in each slag salvaging region, that is, step S42 includes:
step S421: according to the temperature of the core low-temperature point, carrying out slag salvaging on the slag salvaging area corresponding to the first temperature minimum value;
step S422: acquiring a second gradient difference between a temperature maximum value and a second temperature minimum value in the remaining core low-temperature points;
step S423: if the second gradient difference is larger than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point;
step S424: and if the second gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
In the above steps S421 to S424, if the process still proceeds to step S423, the process returns to step S421 to perform the loop execution, that is: and according to the temperature of the core low-temperature point, carrying out slag salvaging on the slag salvaging area corresponding to the second temperature minimum value, and repeating the steps until the slag salvaging of all the slag salvaging areas is completed. And if the step S424 is executed, slag is fished according to the area size until the slag in all the slag areas is fished. Through the steps S421-S424, the influence of the thickness and the area of the zinc slag can be fully considered in the slag dragging process, and the optimal sequence of each slag dragging area is ensured.
In summary, in the method for positioning the zinc dross in the zinc pot provided by the embodiment, a thermal imaging map of the surface of the molten zinc in the zinc pot is obtained; then obtaining a plurality of core low temperature points on the surface of the molten zinc according to a thermal imaging graph; determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points; and finally, carrying out slag salvaging on the slag salvaging area. The slag dragging area is identified and positioned in a thermal imaging mode, the surface of the zinc liquid can be identified in a full-coverage mode, the determined slag dragging area is more complete and accurate, and the slag dragging efficiency and quality are improved.
Second embodiment
Referring to fig. 4, a second embodiment of the present invention provides a zinc dross positioning apparatus 300 for a zinc pot based on the same inventive concept. Fig. 4 shows a schematic structural diagram of a zinc dross positioning device 300 of a zinc pot according to a second embodiment of the invention.
This dross positioner 300 of zinc pot includes:
the image acquisition module 301 is used for acquiring a thermal imaging image of the surface of the molten zinc in the zinc pot;
a low-temperature point obtaining module 302, configured to obtain a plurality of core low-temperature points on the surface of the molten zinc according to the thermal imaging map;
the positioning module 303 is configured to determine a slag dragging area on the surface of the molten zinc according to the plurality of core low temperature points;
and the slag dragging module 304 is used for dragging slag in the slag dragging area.
As an optional implementation manner, the low temperature point obtaining module 302 is specifically configured to:
according to the thermal imaging graph, obtaining an isothermal diagram of the surface of the molten zinc; determining a plurality of low temperature points according to the isotherm diagram; and determining the core low temperature point according to the temperature of the plurality of low temperature points.
As an optional implementation manner, the positioning module 303 is specifically configured to:
acquiring the diameter of the slag spoon; determining the temperature range of slag salvaging according to the isotherm diagram and the diameter of the spoon; and determining the slag dragging area according to the plurality of core low temperature points and the temperature range.
As an optional implementation manner, the positioning module 303 is further specifically configured to:
acquiring an operation range during slag salvaging; dividing the operation range according to the diameter of the spoon to obtain a plurality of region blocks; wherein each region block and the thermal imaging graph have a coordinate mapping relation; and determining the slag dragging area from the area blocks according to the core low temperature points and the temperature range.
As an optional implementation manner, the number of the slag dragging areas is less than or equal to 5.
As an optional implementation manner, the slag dragging module 304 is specifically configured to:
acquiring a first gradient difference between a temperature maximum value and a first temperature minimum value in the core low-temperature point; if the first gradient difference is larger than a preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point; and if the first gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
As an optional implementation manner, the slag dragging module 304 is further specifically configured to:
according to the temperature of the core low-temperature point, carrying out slag salvaging on the slag salvaging area corresponding to the first temperature minimum value; acquiring a second gradient difference between a temperature maximum value and a second temperature minimum value in the remaining core low-temperature points; if the second gradient difference is larger than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point; and if the second gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
It should be noted that the specific implementation and technical effects of the zinc dross positioning device 300 for a zinc pot provided by the embodiment of the present invention are the same as those of the foregoing method embodiment, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiment for the parts of the embodiment that are not mentioned.
Third embodiment
Based on the same inventive concept, the third embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method according to any one of the first embodiments described above.
It should be noted that, in the computer-readable storage medium provided by the embodiment of the present invention, the specific implementation of each step and the generated technical effect achieved when the program is executed by the processor are the same as those of the foregoing method embodiment, and for the sake of brief description, for the sake of brevity, no matter which is mentioned in this embodiment, reference may be made to the corresponding contents in the foregoing method embodiment.
The term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A zinc dross positioning method of a zinc pot is characterized by comprising the following steps:
acquiring a thermal imaging graph of the surface of molten zinc of a zinc pot;
obtaining a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph;
determining a slag dragging area on the surface of the zinc liquid according to the plurality of core low temperature points;
and carrying out slag salvaging on the slag salvaging area.
2. The method of claim 1, wherein obtaining a plurality of core low temperature points of the molten zinc surface from the thermographic profile comprises:
according to the thermal imaging graph, obtaining an isothermal diagram of the surface of the molten zinc;
determining a plurality of low temperature points according to the isotherm diagram;
and determining the core low temperature point according to the temperature of the plurality of low temperature points.
3. The method of claim 2, wherein said determining a slag region of the surface of the molten zinc based on said plurality of core cold points comprises:
acquiring the diameter of the slag spoon;
determining the temperature range of slag salvaging according to the isotherm diagram and the diameter of the spoon;
and determining the slag dragging area according to the plurality of core low temperature points and the temperature range.
4. The method of claim 3, wherein said determining the slag dragging zone based on the plurality of core low temperature points and the temperature range comprises:
acquiring an operation range during slag salvaging;
dividing the operation range according to the diameter of the spoon to obtain a plurality of region blocks; wherein each region block and the thermal imaging graph have a coordinate mapping relation;
and determining the slag dragging area from the area blocks according to the core low temperature points and the temperature range.
5. The method of claim 1, wherein the number of slag dragging areas is less than or equal to 5.
6. The method of claim 1, wherein said skimming the skimming region comprises:
acquiring a first gradient difference between a temperature maximum value and a first temperature minimum value in the core low-temperature point;
if the first gradient difference is larger than a preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point;
and if the first gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
7. The method of claim 6, wherein the slag salvaging area according to the temperature of the core low temperature point comprises:
according to the temperature of the core low-temperature point, carrying out slag salvaging on the slag salvaging area corresponding to the first temperature minimum value;
acquiring a second gradient difference between a temperature maximum value and a second temperature minimum value in the remaining core low-temperature points;
if the second gradient difference is larger than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the temperature of the core low-temperature point;
and if the second gradient difference is smaller than the preset temperature difference, carrying out slag salvaging on the slag salvaging region according to the area size of the slag salvaging region.
8. The utility model provides a dross positioner of zinc pot which characterized in that includes:
the image acquisition module is used for acquiring a thermal imaging image of the surface of the molten zinc of the zinc pot;
the low temperature point acquisition module is used for acquiring a plurality of core low temperature points on the surface of the molten zinc according to the thermal imaging graph;
the positioning module is used for determining a slag salvaging area on the surface of the molten zinc according to the plurality of core low temperature points;
and the slag dragging module is used for dragging slag in the slag dragging area.
9. The apparatus according to claim 8, wherein the low temperature point obtaining module is specifically configured to:
according to the thermal imaging graph, obtaining an isothermal diagram of the surface of the molten zinc; determining a plurality of low temperature points according to the isotherm diagram; and determining the core low temperature point according to the temperature of the plurality of low temperature points.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| CN112964363B (en) | 2023-04-18 |
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