CN117007643A - Pit detection method and device for blast furnace slag runner - Google Patents
Pit detection method and device for blast furnace slag runner Download PDFInfo
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- CN117007643A CN117007643A CN202310985199.7A CN202310985199A CN117007643A CN 117007643 A CN117007643 A CN 117007643A CN 202310985199 A CN202310985199 A CN 202310985199A CN 117007643 A CN117007643 A CN 117007643A
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- 239000002893 slag Substances 0.000 title claims abstract description 383
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 53
- 230000000630 rising effect Effects 0.000 claims description 40
- 238000010586 diagram Methods 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 238000001931 thermography Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 26
- 230000001276 controlling effect Effects 0.000 description 17
- 229910052742 iron Inorganic materials 0.000 description 13
- 230000002159 abnormal effect Effects 0.000 description 9
- 238000010079 rubber tapping Methods 0.000 description 9
- 239000002023 wood Substances 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
- -1 compacting Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
The invention discloses a pit detection method and device for a blast furnace slag runner. The pit detection method of the blast furnace slag runner provided by the embodiment of the invention comprises the steps of obtaining temperature information of the slag runner in the running process; and judging the position of the pit of the slag runner according to the temperature information. According to the technical scheme provided by the embodiment of the invention, through acquiring the temperature information of the slag runner in the operation process, whether the slag runner has pits and the positions of the pits are judged, so that whether the blast furnace slag runner has pits or not is judged timely, and the operation safety of the slag runner is improved.
Description
Technical Field
The invention relates to the technical field of blast furnace slag runner protection, in particular to a pit detection method and device for a blast furnace slag runner.
Background
The blast furnace slag runner is a device for placing high-temperature slag in a blast furnace. The bottom and the two sides of the slag runner are both formed by pouring refractory materials, and in the process of discharging slag from the blast furnace slag runner, the slag runner cannot be prevented from being eroded by scouring along with the high-temperature and high-speed flowing slag passing through the slag runner, so that pits are generated at all positions of the slag runner.
In the process of tapping iron from a blast furnace, a small amount of molten iron may be contained in slag, and the molten iron is deposited in pits due to high density and bottommost position in a slag runner. The existing slag runner is difficult to find pits at the bottom in time, if the pits are found out in time, the slag runner is easy to burn out, so that high-temperature slag burns through the slag runner in the process of tapping iron to cause burning out equipment or safety accidents. Therefore, a detection method capable of timely finding out pits in the slag runner is needed.
Disclosure of Invention
The invention provides a method and a device for detecting pits in a blast furnace slag runner, which are used for solving the problem that the existing blast furnace slag runner is difficult to find pits in time.
According to an aspect of the present invention, there is provided a pit detection method of a blast furnace slag runner, comprising:
acquiring temperature information of the slag runner in the running process;
and judging the position of the pit of the slag runner according to the temperature information.
Optionally, acquiring temperature information of the slag runner in the running process includes:
controlling a thermal imager to move along the slag runner in the running process of the slag runner;
acquiring temperature information of the slag runner through the thermal imager;
the initial position of the thermal imager is arranged at the tail end of the slag runner.
Optionally, during operation of the slag runner, controlling the thermal imager to move along the slag runner includes:
when the slag runner is deslagging, controlling the thermal imager to move from the tail end of the slag runner to the starting end of the slag runner at a first speed at a first time interval, and then moving from the starting end of the slag runner back to the tail end of the slag runner at the first speed;
and when the slag runner stops deslagging, controlling the thermal imaging instrument to move from the tail end of the slag runner to the starting end of the slag runner at a second speed.
Optionally, obtaining, by the thermal imager, temperature information of the slag runner includes:
acquiring a first temperature curve recorded by the thermal imager when slag is discharged from the slag runner;
acquiring a second temperature curve recorded by the thermal imager when slag discharge of the slag runner is stopped;
the first temperature curve and the second temperature curve take the temperature of the beginning end of the slag runner as a starting point and the temperature of the tail end of the slag runner as an ending point.
Optionally, determining the position of the pit of the slag runner according to the temperature information includes:
acquiring a first temperature rising point in the first temperature curve and a second temperature rising point in the second temperature curve;
comparing the position of the first heating point with the position of the second heating point to obtain a first comparison result;
and determining the position of the pit of the slag runner according to the first comparison result.
Optionally, determining the position of the pit of the slag runner according to the first comparison result includes:
if the position of the first temperature rising point is the same as the position of the second temperature rising point, determining the position as the position of the pit of the slag runner;
and if the position of the first temperature rising point is different from the position of the second temperature rising point, considering that the slag runner has no pit.
Optionally, after the determining the position of the pit of the slag runner according to the temperature information, the method further includes:
when the slag runner stops deslagging, acquiring first temperature information of a pit hole of the slag runner and second temperature information of the tail end of the slag runner;
comparing the first temperature information with the second temperature information to obtain a second comparison result;
controlling the running state of the slag runner according to the second comparison result;
and/or, obtaining a thermal effect area map of the pit;
and repairing the pits according to the thermal effect area diagram.
Optionally, controlling the operating state of the slag runner according to the second comparison result includes:
if the absolute value of the difference value between the first temperature information and the second temperature information is larger than or equal to a first preset threshold value, immediately controlling the slag runner to stop running;
and if the absolute value of the difference value between the first temperature information and the second temperature information is smaller than the first preset threshold value, maintaining the slag runner to operate.
In a second aspect, an embodiment of the present invention provides a pit detection apparatus for a blast furnace slag runner, including:
the temperature acquisition module is used for acquiring temperature information of the slag runner in the operation process:
and the judging module is used for judging the position of the pit of the slag runner according to the temperature information.
Optionally, the temperature acquisition module includes:
the device comprises a thermal imager, a sliding rail and a heat insulation baffle;
the sliding rail and the heat insulation baffle are arranged on the slag runner, and the thermal imager is arranged on the sliding rail; the thermal imager is used for sliding along the sliding rail so as to acquire temperature information of the slag runner, and the heat insulation baffle is used for heat insulation.
According to the technical scheme provided by the embodiment of the invention, the position of the pit of the slag runner is judged according to the temperature information by acquiring the temperature information of the slag runner in the running process, so that whether the pit appears in the blast furnace slag runner is judged in time, and the running safety of the slag runner is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 2 is a diagram of another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 3 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 4 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 5 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 6 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 7 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 8 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 9 is a schematic illustration showing still another method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of a pit detecting device for a blast furnace slag runner according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of another pit detecting device for a blast furnace slag runner according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
FIG. 1 is a diagram of a method for detecting pits in a blast furnace slag runner according to an embodiment of the present invention. Referring to fig. 1, the method for detecting the pits of the blast furnace slag runner provided by the embodiment of the invention comprises the following steps:
s101, acquiring temperature information of the slag runner in the running process.
Specifically, during operation of the blast furnace slag runner, slag is discharged from the slag runner. The slag is gradually cooled during discharge from the slag runner and its temperature should be gradually lowered. Correspondingly, the temperature of the slag runner from the initial end to the final end should also be gradually reduced in a uniform gradient. If the slag runner has pits, the temperature of the slag runner may be abnormally increased due to molten iron deposited in the pits. The temperature information of the slag runner in the running process is obtained and can be used for judging whether the slag runner has pits or not.
S102, judging the position of a pit of the slag runner according to the temperature information.
Specifically, according to the acquired temperature information of the slag runner, whether the slag runner has pits or not can be judged. If the slag runner does not have pits, the slag runner operates normally. If the slag runner has a pit, the position of the pit can be judged according to the position of abnormal rise of the temperature of the slag runner, so that an operator can repair the pit conveniently.
For example, when judging whether a blast furnace slag runner has a pit, temperature information of the slag runner in the running process is firstly obtained, and whether the slag runner has the pit is judged according to the temperature information. If the slag runner does not have pits, the slag runner operates normally. If the temperature information of the slag runner is abnormally increased, the occurrence of pits in the slag runner can be judged. At the moment, the position of the pit is judged according to the position of abnormal rise of the temperature of the slag runner, so that an operator can repair the pit conveniently.
According to the pit detection method for the blast furnace slag runner, temperature information of the slag runner in the operation process is obtained. The position of the pit of the slag runner is judged according to the temperature information, so that whether the pit and the position thereof appear in the blast furnace slag runner or not is judged in time, an operator can repair the pit conveniently, and the safety of slag runner operation is improved.
Alternatively, fig. 2 is another pit detecting method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 2, the pit detection method of the blast furnace slag runner includes:
s201, controlling the thermal imager to move along the slag runner in the running process of the slag runner.
Specifically, a thermal imager can be arranged in the operation process of the slag runner, and the temperature information of the slag runner can be obtained by controlling the thermal imager to move along the slag runner. Since slag is gradually cooled during discharge from the slag runner, it is necessary to control the thermal imager to move along the slag runner to acquire temperature information of the slag runner position. And the thermal imaging instrument can be arranged at two sides of the slag runner, the thermal imaging instrument arranged at the right side can scan the center of the slag runner to all the positions at the left side and acquire temperature information, and the thermal imaging instrument arranged at the left side can scan the center of the slag runner to all the positions at the right side and acquire temperature information, so that the accuracy of the acquired temperature information is improved.
S202, acquiring temperature information of the slag runner through a thermal imager.
Wherein, the initial position of thermal imaging appearance sets up in the terminal of slag runner.
Specifically, the thermal imager can acquire temperature information of the slag runner from the starting end to the tail end, and after the thermal imager acquires all the temperature information of the slag runner from the starting end to the tail end, whether the slag runner has a pit or not can be judged according to the temperature information of the slag runner.
S102, judging the position of a pit of the slag runner according to the temperature information.
Optionally, fig. 3 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 3, the pit detection method of the blast furnace slag runner includes:
s301, when slag is discharged from the slag runner, controlling the thermal imager to move from the tail end of the slag runner to the initial end of the slag runner at a first speed at a first time interval, and then moving from the initial end of the slag runner to return to the tail end of the slag runner at the first speed.
Specifically, the operational state of the slag runner includes the slag runner being tapped and the slag runner stopping tapping, and slag is discharged from the slag runner while the slag runner is tapping. Since the initial position of the thermal imager is set at the end of the slag runner, the thermal imager can be controlled to move along the slag runner at a first speed. Moving from the end of the slag runner to the start of the slag runner at a first speed and then moving from the start of the slag runner back to the end of the slag runner at the first speed. The first speed is the moving speed of the thermal imager, and the first time interval is the time interval for the thermal imager to detect the temperature of the slag runner. For example, the first speed may be 0.3m/s,0.4m/s, or 0.5m/s, etc., and the first time interval may be 20min,30min, 40min, etc. The arrangement can acquire a plurality of groups of temperature information, and the detection precision is improved.
S302, when slag tapping of the slag runner is stopped, controlling the thermal imager to move from the tail end of the slag runner to the starting end of the slag runner at a second speed.
Specifically, after slag discharge is stopped in the slag runner, the temperature information of the slag runner is not changed any more, and the temperature information of the current slag runner can be obtained only by controlling the thermal imager to move from the tail end of the slag runner to the starting end of the slag runner at the second speed. The second speed may be the same as or different from the first speed, and is not limited herein.
S202, acquiring temperature information of the slag runner through a thermal imager.
S102, judging the position of a pit of the slag runner according to the temperature information.
Optionally, fig. 4 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the pit detection method of the blast furnace slag runner includes:
s201, controlling the thermal imager to move along the slag runner in the running process of the slag runner.
S401, acquiring a first temperature curve recorded by a thermal imager when slag is discharged from a slag runner.
Specifically, according to temperature information obtained by the thermal imager when slag is discharged from the slag runner, a first temperature curve from the initial end of the slag runner to the tail end of the slag runner can be drawn when slag is discharged from the slag runner. If the thermal imager makes multiple recordings, multiple first temperature curves may be plotted. By confirming the position of the abnormal temperature rise in the first temperature curve, whether the slag runner has a pit or not can be judged.
The first temperature profile also confirms the temperature gradient between the beginning of the slag runner and the end of the terminal slag runner during slag tapping of the slag runner. The temperature gradient can be used for judging the flow rate of the slag in the slag runner slag discharging process, and the flow rate of the slag can be regulated according to the temperature gradient.
S402, acquiring a second temperature curve recorded by the thermal imager when slag tapping is stopped in the slag runner.
The first temperature curve and the second temperature curve take the temperature of the beginning end of the slag runner as a starting point and the temperature of the tail end of the slag runner as an ending point.
Specifically, according to the temperature information obtained by the thermal imager when the slag runner stops deslagging, a second temperature curve from the initial end of the slag runner to the tail end of the slag runner can be drawn when the slag runner stops deslagging. By confirming the position of the abnormal temperature rise in the second temperature curve, whether the slag runner has a pit or not can be judged.
S102, judging the position of a pit of the slag runner according to the temperature information.
Optionally, fig. 5 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 5, the pit detection method of the blast furnace slag runner includes:
s201, controlling the thermal imager to move along the slag runner in the running process of the slag runner.
S401, acquiring a first temperature curve recorded by a thermal imager when slag is discharged from a slag runner.
S402, acquiring a second temperature curve recorded by the thermal imager when slag tapping is stopped in the slag runner.
S501, acquiring a first temperature rising point in a first temperature curve and a second temperature rising point in a second temperature curve.
Specifically, the position of the abnormal temperature rise in the first temperature curve is a first temperature rise point, and the position of the abnormal temperature rise in the second temperature curve is a second temperature rise point. If whether the pit exists in the slag runner is judged by the first temperature curve or the second temperature curve alone, the judgment error may be caused by the influence of the slag temperature. And respectively confirming the abnormal temperature rise positions according to the first temperature curve and the second temperature curve, judging whether the slag runner has pits or not according to the first temperature rise point and the second temperature rise point, and improving the judgment accuracy.
S502, comparing the position of the first temperature rising point with the position of the second temperature rising point to obtain a first comparison result.
Specifically, the position of a first temperature rising point with abnormally increased temperature on the slag runner when slag runner slag is discharged is compared with the position of a second temperature rising point with abnormally increased temperature on the slag runner when slag runner slag is stopped, and whether pits exist in the slag runner and the positions of the pits can be determined according to a first comparison result.
S503, determining the position of a pit of the slag runner according to the first comparison result.
Specifically, if the position of the first temperature rising point and the position of the second temperature rising point are very close to or the same as each other, the position is a pit. If the positions of the first temperature rising point and the second temperature rising point are far apart, no pit exists. The accuracy of judging the position of the pit can be further improved through the arrangement.
Optionally, fig. 6 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 6, the pit detection method of the blast furnace slag runner includes:
s201, controlling the thermal imager to move along the slag runner in the running process of the slag runner.
S401, acquiring a first temperature curve recorded by a thermal imager when slag is discharged from a slag runner.
S402, acquiring a second temperature curve recorded by the thermal imager when slag tapping is stopped in the slag runner.
S501, acquiring a first temperature rising point in a first temperature curve and a second temperature rising point in a second temperature curve.
S502, comparing the position of the first temperature rising point with the position of the second temperature rising point to obtain a first comparison result.
S601, if the position of the first temperature rising point is the same as that of the second temperature rising point, determining the position as the position of the pit of the slag runner.
Specifically, when the position of the first temperature rising point on the slag runner and the position of the second temperature rising point on the slag runner are the same, the temperature of the position is always higher than the normal temperature. It is considered that this position deposits molten iron due to occurrence of a pit, and it is possible to confirm that this position is the position of the pit.
S602, if the position of the first temperature rising point is different from that of the second temperature rising point, the slag runner is considered to have no pit.
Specifically, when the position of the first temperature rising point on the slag runner is different from the position of the second temperature rising point on the slag runner, the condition that no position with abnormal temperature is always arranged on the current slag runner is indicated. The slag runner is considered to be temporarily free of pits and in a normal operating state.
Optionally, fig. 7 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 7, the pit detection method of the blast furnace slag runner includes:
s101, acquiring temperature information of the slag runner in the running process.
S102, judging the position of a pit of the slag runner according to the temperature information.
S701, when slag discharge of the slag runner is stopped, acquiring first temperature information of a pit of the slag runner and second temperature information of the tail end of the slag runner.
Specifically, after the position of the pit is judged, when the slag runner stops deslagging, the first temperature information of the pit of the slag runner and the second temperature information of the tail end of the slag runner can be obtained through the thermal imager. The first temperature information is the temperature in the pit, and the more molten iron is deposited in the pit, the higher the temperature in the pit. By acquiring the first temperature information and the second temperature information, the damage degree of the slag runner can be judged.
S702, comparing the first temperature information with the second temperature information to obtain a second comparison result.
Specifically, the first temperature information and the second temperature information are compared, and the damage degree of the slag runner can be determined according to the second comparison result, so that whether the slag runner needs to be immediately stopped and repaired is judged, and accidents are prevented.
S703, controlling the running state of the slag runner according to the second comparison result.
Specifically, when the difference between the first temperature information and the second temperature information is large, the damage degree of the slag runner is serious, and the operation needs to be stopped immediately. When the difference between the first temperature information and the second temperature information is smaller, the damage degree of the slag runner is lighter, and the operation can be temporarily maintained. The operation state of the slag runner can be adjusted according to the specific condition of the slag runner.
Optionally, fig. 8 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 8, the pit detection method of the blast furnace slag runner includes:
s101, acquiring temperature information of the slag runner in the running process.
S102, judging the position of a pit of the slag runner according to the temperature information.
S701, when slag discharge of the slag runner is stopped, acquiring first temperature information of a pit of the slag runner and second temperature information of the tail end of the slag runner.
S702, comparing the first temperature information with the second temperature information to obtain a second comparison result.
S801, if the absolute value of the difference value between the first temperature information and the second temperature information is greater than or equal to a first preset threshold value, immediately controlling the slag runner to stop running.
Specifically, when the absolute value of the difference between the first temperature information and the second temperature information is greater than or equal to a first preset threshold value, it is indicated that a large amount of molten iron is deposited in the pit, the damage degree of the slag runner is serious, and the operation needs to be stopped immediately to prevent safety accidents. Illustratively, the first preset threshold may be 40 ℃,50 ℃, 60 ℃, or the like.
S802, if the absolute value of the difference value between the first temperature information and the second temperature information is smaller than a first preset threshold value, maintaining the slag runner to operate.
Specifically, when the absolute value of the difference between the first temperature information and the second temperature information is smaller than a first preset threshold value, the situation that molten iron deposited in the pit is less, the damage degree of the slag runner is light, and the operation can be temporarily maintained.
Optionally, fig. 9 is a schematic diagram of another pit detection method for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 9, the pit detection method of the blast furnace slag runner includes:
s101, acquiring temperature information of the slag runner in the running process.
S102, judging the position of a pit of the slag runner according to the temperature information.
And S901, acquiring a thermal effect area diagram of the pit.
Specifically, after the position of the pit of the slag runner is determined, a thermal effect area diagram of the pit can be obtained through a thermal imager. According to the thermal effect area diagram, parameters such as the area of the pit, the highest temperature point and the like can be determined, so that the pit is repaired.
S902, repairing the pit according to the thermal effect area diagram.
Specifically, after parameters of the pit are determined through the thermal effect diagram, a wood stick with the front end of a cone structure can be obtained, and the wood stick is inserted from the highest temperature point of the pit, so that the slag condensed on the surface of the pit is melted. And then filling molten iron in the pit by using a tool, purging the molten iron by using compressed air, filling refractory materials, compacting, and finishing repairing operation, so that the normal use of the slag runner can be recovered.
The initial position of the thermal imager is set at the end of the slag runner, and when judging whether the blast furnace slag runner has a pit, the temperature information of the slag runner is acquired first. When the slag runner is deslagging, the thermal imager is controlled to move along the slag runner at a first speed at intervals of a first time to acquire temperature information of the slag runner. Moving from the end of the slag runner to the start of the slag runner at a first speed and then moving from the start of the slag runner back to the end of the slag runner at the first speed. After slag discharge of the slag runner is stopped, the thermal imager is controlled to move from the tail end of the slag runner to the starting end of the slag runner at a second speed, and temperature information of the slag runner is obtained.
And drawing a first temperature curve and a second temperature curve according to the temperature information of the slag runner when slag is discharged and the temperature information of the slag runner when slag is stopped, which are obtained by the thermal imager, and confirming a first temperature rising point of abnormally-increased temperature in the first temperature curve and a second temperature rising point of abnormally-increased temperature in the second temperature curve. When the position of the first temperature rising point on the slag runner is the same as the position of the second temperature rising point on the slag runner, the temperature of the position is always higher than the normal temperature, and the position can be confirmed to be the position of the pit. When the position of the first temperature rising point on the slag runner is different from the position of the second temperature rising point on the slag runner, no position with abnormal temperature is present on the current slag runner, and the slag runner can be considered to have no pit temporarily.
If the slag runner does not have pits, the slag runner operates normally. And if the slag runner appears a pit, when the slag runner stops deslagging, acquiring first temperature information of the pit of the slag runner and second temperature information of the tail end of the slag runner through a thermal imager. When the absolute value of the difference value between the first temperature information and the second temperature information is smaller than a first preset threshold value, the damage degree of the slag runner is light, and the operation can be temporarily maintained. When the absolute value of the difference between the first temperature information and the second temperature information is larger than or equal to a first preset threshold value, the damage degree of the slag runner is serious, and the operation needs to be stopped immediately to prevent safety accidents.
After the position of the pit of the slag runner is determined, a thermal effect area diagram of the pit is obtained through a thermal imager. And determining parameters of the pit through a thermal effect diagram, obtaining a wood stick with the front end of a cone structure, and inserting the wood stick from the highest temperature point of the pit to melt the condensed slag on the surface of the pit. And then filling molten iron in the pit by using a tool, purging the molten iron by using compressed air, filling refractory materials, compacting, and finishing repairing operation, so that the normal use of the slag runner can be recovered. The pit detection method for the blast furnace slag runner provided by the embodiment of the invention realizes timely judging whether the blast furnace slag runner has pits and the positions thereof, so that operators can repair the pits, and the safety of slag runner operation is improved.
Alternatively, fig. 10 is a schematic structural diagram of a pit detecting device for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 10, a pit detecting device 10 for a blast furnace slag runner according to an embodiment of the present invention includes:
the temperature acquisition module 11 is used for acquiring temperature information of the slag runner in the operation process:
and the judging module 12 is used for judging the position of the pit of the slag runner according to the temperature information.
According to the pit detection device for the blast furnace slag runner, provided by the embodiment of the invention, the position of the pit of the slag runner is judged according to the temperature information by acquiring the temperature information of the slag runner in the operation process, so that the situation that whether the pit appears in the blast furnace slag runner is judged in time is realized, and the operation safety of the slag runner is improved.
Alternatively, fig. 11 is a schematic structural diagram of another pit detecting device for a blast furnace slag runner according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 11, the temperature acquisition module includes the thermal imager 1, the slide rail 2, and the heat shielding plate 3. The sliding rail 2 and the heat insulation baffle 3 are arranged on the slag runner 4, and the thermal imager 1 is arranged on the sliding rail 2. The thermal imager 1 is used for sliding along the sliding rail 2 to acquire temperature information of the slag runner 4, and the heat insulation baffle 3 is used for heat insulation.
Specifically, be provided with slide rail 2 on the slag runner 4, be equipped with the driver in the slide rail 2, through setting up thermal imaging system 1 on slide rail 2, can realize obtaining the temperature information of slag runner 4 to whether detect slag runner 4 exists the hole. And the thermal imaging instrument 1 can be arranged at two sides of the slag runner 4, all positions from the center of the slag runner 4 to the left side can be scanned by the thermal imaging instrument 1 arranged at the right side, and temperature information can be acquired, and all positions from the center of the slag runner 4 to the right side can be scanned by the thermal imaging instrument 1 arranged at the left side, and temperature information can be acquired. The inner side of the slag runner 4 is also provided with a heat insulation baffle plate 3 to prevent the thermal imager 1 from being damaged due to overhigh temperature. The pit detection device 10 for a blast furnace slag runner provided by the embodiment of the invention has the beneficial effects of the pit detection method for a blast furnace slag runner of any embodiment, and is not described herein.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A pit detection method for a blast furnace slag runner is characterized by comprising the following steps:
acquiring temperature information of the slag runner in the running process;
and judging the position of the pit of the slag runner according to the temperature information.
2. The method according to claim 1, wherein the acquiring temperature information of the slag runner during operation comprises:
controlling a thermal imager to move along the slag runner in the running process of the slag runner;
acquiring temperature information of the slag runner through the thermal imager;
the initial position of the thermal imager is arranged at the tail end of the slag runner.
3. The method of claim 2, wherein said controlling the thermal imager to move along the slag runner during operation of the slag runner comprises:
when the slag runner is deslagging, controlling the thermal imager to move from the tail end of the slag runner to the starting end of the slag runner at a first speed at a first time interval, and then moving from the starting end of the slag runner back to the tail end of the slag runner at the first speed;
and when the slag runner stops deslagging, controlling the thermal imaging instrument to move from the tail end of the slag runner to the starting end of the slag runner at a second speed.
4. The method according to claim 2, wherein the acquiring, by the thermal imager, temperature information of the slag runner includes:
acquiring a first temperature curve recorded by the thermal imager when slag is discharged from the slag runner;
acquiring a second temperature curve recorded by the thermal imager when slag discharge of the slag runner is stopped;
the first temperature curve and the second temperature curve take the temperature of the beginning end of the slag runner as a starting point and the temperature of the tail end of the slag runner as an ending point.
5. The method according to claim 4, wherein determining the position of the pit of the slag runner based on the temperature information comprises:
acquiring a first temperature rising point in the first temperature curve and a second temperature rising point in the second temperature curve;
comparing the position of the first heating point with the position of the second heating point to obtain a first comparison result;
and determining the position of the pit of the slag runner according to the first comparison result.
6. The method according to claim 5, wherein determining the position of the pit of the slag runner based on the first comparison result comprises:
if the position of the first temperature rising point is the same as the position of the second temperature rising point, determining the position as the position of the pit of the slag runner;
and if the position of the first temperature rising point is different from the position of the second temperature rising point, considering that the slag runner has no pit.
7. The method according to claim 1, further comprising, after the determining the position of the pit of the slag runner based on the temperature information:
when the slag runner stops deslagging, acquiring first temperature information of a pit hole of the slag runner and second temperature information of the tail end of the slag runner;
comparing the first temperature information with the second temperature information to obtain a second comparison result;
controlling the running state of the slag runner according to the second comparison result;
and/or, obtaining a thermal effect area map of the pit;
and repairing the pits according to the thermal effect area diagram.
8. The method according to claim 7, wherein controlling the operating state of the slag runner according to the second comparison result comprises:
if the absolute value of the difference value between the first temperature information and the second temperature information is larger than or equal to a first preset threshold value, immediately controlling the slag runner to stop running;
and if the absolute value of the difference value between the first temperature information and the second temperature information is smaller than the first preset threshold value, maintaining the slag runner to operate.
9. A pit detection device for a blast furnace slag runner, comprising:
the temperature acquisition module is used for acquiring temperature information of the slag runner in the operation process:
and the judging module is used for judging the position of the pit of the slag runner according to the temperature information.
10. The pit detection device of a blast furnace slag runner according to claim 9, wherein the temperature acquisition module comprises:
the device comprises a thermal imager, a sliding rail and a heat insulation baffle;
the sliding rail and the heat insulation baffle are arranged on the slag runner, and the thermal imager is arranged on the sliding rail; the thermal imager is used for sliding along the sliding rail so as to acquire temperature information of the slag runner, and the heat insulation baffle is used for heat insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310985199.7A CN117007643A (en) | 2023-08-04 | 2023-08-04 | Pit detection method and device for blast furnace slag runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310985199.7A CN117007643A (en) | 2023-08-04 | 2023-08-04 | Pit detection method and device for blast furnace slag runner |
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| Publication Number | Publication Date |
|---|---|
| CN117007643A true CN117007643A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310985199.7A Pending CN117007643A (en) | 2023-08-04 | 2023-08-04 | Pit detection method and device for blast furnace slag runner |
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| Country | Link |
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| CN (1) | CN117007643A (en) |
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2023
- 2023-08-04 CN CN202310985199.7A patent/CN117007643A/en active Pending
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