CN216524095U - Thermal state monitoring system for empty ladle and tapping process of steel ladle - Google Patents
Thermal state monitoring system for empty ladle and tapping process of steel ladle Download PDFInfo
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- CN216524095U CN216524095U CN202123023192.2U CN202123023192U CN216524095U CN 216524095 U CN216524095 U CN 216524095U CN 202123023192 U CN202123023192 U CN 202123023192U CN 216524095 U CN216524095 U CN 216524095U
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Abstract
The utility model discloses a thermal state monitoring system for an empty ladle and a tapping process of a steel ladle, and belongs to the technical field of metallurgy. The thermal condition monitoring system includes: the first/second thermal imaging unit is respectively arranged on the first/second moving device and surrounds the outer side of the ladle; the third thermal imaging unit, the visible light imaging unit and the height/thickness acquisition unit are arranged on the third movement device in parallel and are positioned right above the steel ladle; the weighing device is positioned at the lower part of the outer side of the steel ladle; and the terminal data processing and control unit is connected with the first/second/third thermal imaging unit, the visible light imaging unit, the height/thickness acquisition unit and the first/second/third movement device through the communication transmission unit. The utility model accurately controls the empty ladle of the ladle and the thermal state of the tapping process from multiple dimensions, and analyzes the influence of the heat absorption and the heat dissipation of the ladle on the molten steel cooling in the tapping process.
Description
Technical Field
The utility model belongs to the technical field of metallurgy, and particularly relates to a thermal state monitoring system for a steel ladle empty-bag and steel tapping process, which is used for monitoring the thermal state of the steel ladle empty-bag and steel tapping process when a steel ladle moves to a converter steel tapping position in an empty-bag operation stage and the converter steel tapping.
Background
The proper molten steel temperature is the precondition for ensuring the continuous casting production and is the basis for obtaining good casting blank quality. The molten steel after smelting undergoes a plurality of temperature drop processes in the steelmaking process, wherein the temperature drop processes comprise steel tapping process temperature drop, steel ladle heat absorption temperature drop, steel ladle transportation process temperature drop, refining process temperature drop and tundish process temperature drop. The ladle is used as an important material carrier device, and the hot state of the ladle before tapping is unknown and can not be determined throughout the whole steel-making process. The attention on the monitoring of the hot state of the steel ladle has important significance for controlling the temperature of the molten steel and improving the hit rate of the end point temperature.
For a long time, steel enterprises mostly adopt manual blind selection to transfer steel ladles to a converter tapping position to wait for containing molten steel. The temperature of molten steel after tapping fluctuates greatly due to the fact that the thermal state of an empty ladle cannot be accurately controlled. For the management of the steel ladle, only the steel ladle baking and the steel ladle lining residual thickness detection are carried out or depending on experience, the fact that the temperature control data of a certain steel plant in each production procedure of high-carbon steel are analyzed through reference documents is found, the fluctuation range of the tapping temperature of the converter is large, the difference value between the highest tapping temperature and the lowest tapping temperature reaches 121 ℃, and the steel ladle condition has great influence on the whole temperature control process. CN202885936U discloses an automatic measuring device for the hot state of a steel ladle, which does not pay attention to the influence of the empty hot state of the steel ladle on the temperature drop of molten steel in the tapping process through the tracking record of a crown block, the position of a trolley and the weight of the steel ladle on the state of the steel ladle.
The above documents and patents do not propose a measuring system or method for measuring the thermal state of the ladle in multiple dimensions, which is adapted to the situation that the ladle runs to the tapping position of the converter during the empty ladle operation stage. The utility model provides a thermal state monitoring system for empty ladles of ladles and a tapping process according to heat absorption and heat dissipation of molten steel due to ladles in the tapping process.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model discloses a thermal state monitoring system for the empty ladle and the tapping process of a steel ladle, which accurately controls the thermal state of the empty ladle and the tapping process of the steel ladle according to multiple dimensions such as the capacity of the steel ladle, the quality of the steel ladle, the temperature of the steel ladle, the lining distribution of the steel ladle, the temperature of molten steel, the thickness of slag liquid, the residue of slag liquid steel and the like, and analyzes the influence of the heat absorption and the heat dissipation of the steel ladle on the temperature reduction of the molten steel in the tapping process.
According to the technical scheme of the utility model, the thermal state monitoring system for the empty ladle and the tapping process of the steel ladle is provided, and is characterized by comprising the following components:
the first/second thermal imaging units are respectively arranged on the first/second moving devices and surround the outer side of the ladle;
the third thermal imaging unit, the visible light imaging unit and the height/thickness acquisition unit are arranged on the third movement device in parallel and are positioned right above the steel ladle;
the weighing device is positioned at the lower part of the outer side of the steel ladle;
and the terminal data processing and control unit is connected with the first/second/third thermal imaging unit, the visible light imaging unit, the height/thickness acquisition unit and the first/second/third movement device through the communication transmission unit.
Further, the first/second/third motion devices are identical in structure and include: the cloud platform and set up in the slip table of cloud platform lower part.
Further, the first/second/third thermal imaging unit, the visible light imaging unit and the height/thickness acquisition unit are all provided with cooling protection devices.
Further, the cooling protection device comprises cooling water cooling protection, compressed air lens purging and a lens protection window.
Furthermore, the terminal data processing and control unit comprises a control unit and an industrial personal computer.
Further, the first/second/third thermal imaging unit, the visible light imaging unit, the height/thickness acquisition unit, the first/second/third movement device and the cooling protection device are all connected with the control unit.
Furthermore, the control unit is connected with the communication transmission unit, and the other end of the communication transmission unit is connected with the industrial personal computer.
Further, the thermal imaging unit is a thermal infrared imager.
Further, the visible light imaging unit is a high-definition industrial camera.
Further, the height/thickness acquisition unit is a laser range finder scanner.
Furthermore, the number of the thermal imagers is 1 or 2, and the number of the thermal imagers is generally 1 or 2, according to the data measured by the actual site, the infrared thermal imagers and the laser ranging scanners.
The steel ladle empty ladle thermal state monitoring system has the beneficial effects that the steel ladle empty ladle thermal state monitoring system adopts a plurality of measuring instruments such as an infrared thermal imager, a laser range finder, a weighing device and the like to comprehensively acquire the inner and outer wall temperatures of the steel ladle and the state of the lining material before tapping. The slag molten steel residue is obtained by adopting a linked measurement mode of the thermal infrared imager and the laser range finder, so that the influence of the heat absorption of the steel ladle on the molten steel cooling is clearly known, the temperature control of the molten steel is further facilitated, and the product quality is stabilized.
Drawings
Fig. 1 is a schematic structural diagram of a thermal state monitoring system for empty ladles of ladles according to an embodiment of the utility model.
Fig. 2 shows a multi-dimensional ladle thermal state establishment diagram according to an embodiment of the utility model.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
In the technical scheme of the utility model, all parts cooperate with each other and influence each other, thereby realizing corresponding technical effects. In particular, the ladle transports molten steel to each smelting station, which is an important smelting vessel in the metallurgical production process. Therefore, the contact type temperature measurement mode is not suitable for the ladle moving in a long distance. As long as steel leakage occurs at any position of the steel ladle, serious safety accidents can be caused, so that a thermal infrared imager needs to be selected to realize non-contact temperature imaging and carry out omnibearing temperature detection on the steel ladle. Whether the ladle refractory material is damaged by erosion or the outer wall of the ladle is deformed and cracked, the temperature is suddenly changed, and the temperature is displayed in an infrared thermal image. So far, in order to omnidirectional detection and save equipment cost as far as possible, add cloud platform and slip table device. Because the steel ladle is cylindrical, two groups of thermal imaging combinations are arranged on two sides of the steel ladle to realize the monitoring of the outer wall of the steel ladle; and a group of thermal imaging combination is arranged above the steel ladle to realize the monitoring of the inner wall of the steel ladle.
During tapping, high-temperature molten steel is filled into a ladle, and low-temperature ladle and slag steel residue in the ladle lead to the reduction of the temperature of the molten steel. In order to clarify the cooling process of molten steel, the ladle temperature and the residual quantity of slag steel before tapping need to be clarified. According to the temperature measurement principle of a thermal imager, different materials have different emissivities, and thermal imaging pictures are displayed differently. The ladle lining is a non-metal object, the slag steel residue is a mixture of metal and non-metal, a suspected area can be extracted through a thermal imaging picture and a visible light image, and the area of the suspected area is measured. The laser ranging scanner measures the distance from laser to an object by using the time flight principle, and is not influenced by a high-temperature and high-dust environment of a metallurgical site. The residual thickness of the slag steel in the suspected area can be measured by comparing the thickness of the original ladle lining, and the residual quality of the slag steel is calculated. The measurement combination unit comprises a thermal imager, an industrial camera, a laser ranging scanner, a cradle head and a sliding table. And placing the measurement combination above the ladle to realize the slag steel residue monitoring of the ladle lining.
Examples
As can be seen from fig. 1: the thermal state monitoring system for the steel ladle empty ladle and the steel tapping process comprises a high-temperature thermal infrared imager 1, a high-temperature thermal infrared imager 2, a high-temperature thermal infrared imager 3, a laser ranging scanner 4, a high-definition industrial camera 5, a holder device 6, an electric sliding table 7, a weighing device 8, a cooling device 9, a field control box 10 and an industrial personal computer 11; the electric sliding table 7 has the limiting and locking functions, the holder device 6 can be controlled to rotate by 300 degrees, the electric sliding table 7 is fixedly connected with the holder device 6, the holder device 6 is fixedly connected with the laser ranging scanner 4, the high-temperature thermal infrared imager 3 and the high-definition industrial camera 5 are fixedly connected with the high-temperature laser ranging scanner 4, and the high-temperature thermal infrared imager 3 and the high-temperature laser ranging scanner 4 are connected with the field control box 10 through data lines. The high-definition industrial camera 5 is connected with the high-temperature laser ranging device 4 through a data line and a power line so as to transmit, control and provide power for data; the high-temperature thermal infrared imager 1 and the high-temperature thermal infrared imager 2 are both provided with a holder device 6 and an electric sliding table 7; the high-temperature thermal infrared imager 1, the high-temperature thermal infrared imager 2, the holder device 6, the electric sliding table 7 and the cooling device 9 are connected with the field control box 10 through data lines and power lines so as to transmit and control data and provide power. The field control box 10 is connected with the industrial personal computer 11 for data transmission interaction. And acquiring data information and running states of the measuring equipment, the moving device and the cooling device at the industrial personal computer of the terminal, and analyzing and displaying the data through specific software. The temperature data, the image data, the position thickness data and the quality data are transmitted to an industrial personal computer database and are stored in a classified mode according to the ladle numbers, and various data information can be extracted from the database according to time sequence or the ladle numbers.
The utility model is implemented as follows: the whole system device is arranged near a waiting position of a steel tapping ladle of the converter, and starts to detect after an empty ladle is in place in the later stage of steel making of the converter, and data information of the empty ladle, the steel tapping process and the finished steel tapping is collected, as shown in figure 2.
Identifying the number of the steel ladle through monitoring and image processing analysis of a high-definition industrial camera 5; after the detection steel ladle is in place, all measuring equipment measuring windows are opened through the field control box PLC, the measuring equipment starts to collect data, and data information of the thermal imager, the laser range finder and the weighing device is displayed on a screen of the industrial personal computer through the data collecting unit and the communication unit.
And adjusting the moving devices of the high-temperature thermal infrared imager 3 and the laser ranging scanner 4 to enable the moving devices to be opposite to the upper edge of the axis of the ladle opening, starting data acquisition, and detecting the temperature of the lining of the ladle and the residue of molten steel slag. The detection steps are as follows:
firstly, starting a high-temperature thermal infrared imager 3 and a high-definition industrial camera 5 to image a steel ladle lining, collecting temperature distribution, thermal imaging images and visible light images of the steel ladle lining, and fusing the images; secondly, because different substances have different emissivities, areas where molten slag steel remains are obtained through image processing of visible light images and thermal images, and the three-dimensional positions of the areas are found out by combining image coordinates and real three-dimensional coordinates. And thirdly, according to the three-dimensional coordinates of the suspected area position, the laser range finder and the high-definition industrial camera are moved through the cradle head and the sliding table, and the thickness change and the area of the lining in the area are collected. And fourthly, comparing the original thickness of the lining of the steel ladle, and calculating the residual mass of the slag molten steel and the residual heat quantity of the slag molten steel.
The empty ladle mass of the ladle is weighed by the weighing device 8, the empty ladle mass is compared with the ladle mass after measurement and calculation, and if the difference is too large, manual inspection and repair are needed.
And in the tapping process, adjusting the high-temperature thermal infrared imager 1 or the high-temperature thermal infrared imager 2 to enable the high-temperature thermal infrared imager to be opposite to the vicinity of the tapped steel flow, and detecting the temperature of the molten steel and the temperature change of the outer wall of the steel ladle.
And when tapping is finished, the steel passes through the thermal state monitoring system again, the weighing device measures the mass after tapping, and the high-definition industrial camera and the laser range finder measure the total height and the thickness of the slag liquid in the steel ladle.
And transmitting the temperature data, the image data, the position thickness data and the quality data to an industrial personal computer database for classified storage according to the ladle numbers, recording each ladle, comparing the data with the previous data after acquiring new data, and tracking the use condition of the ladle.
The industrial personal computer is mainly divided into 4 parts, namely, a high-temperature thermal infrared imager 1, a high-temperature thermal infrared imager 2 and a high-definition industrial camera 5; secondly, displaying data of the laser range finder and the weighing device; thirdly, displaying the residual molten steel of the high-temperature thermal infrared imager 3 and the laser ranging scanner 4; and fourthly, controlling the cradle head and the sliding table.
The main control computer can call the measured data information from the database, extract various data information according to time sequence or ladle coding, and draw corresponding change curve graphs by using the main control computer.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A thermal condition monitoring system for use in a ladle emptying and tapping process, the thermal condition monitoring system comprising:
the first/second thermal imaging units are respectively arranged on the first/second moving devices and surround the outer side of the ladle;
the third thermal imaging unit, the visible light imaging unit and the height/thickness acquisition unit are arranged on the third movement device in parallel and are positioned right above the steel ladle;
the weighing device is positioned at the lower part of the outer side of the steel ladle;
and the terminal data processing and control unit is connected with the first/second/third thermal imaging unit, the visible light imaging unit, the height/thickness acquisition unit and the first/second/third movement device through the communication transmission unit.
2. The thermal condition monitoring system of claim 1, wherein the first/second/third motion devices are identical in structure, comprising: the cloud platform and set up in the slip table of cloud platform lower part.
3. The thermal condition monitoring system of claim 1, wherein the first/second/third thermal imaging units, the visible light imaging unit, and the height/thickness acquisition unit are each configured with a cooling protection device.
4. The thermal condition monitoring system of claim 3, wherein the cooling protection device comprises a cooling water cooling protection, a compressed air lens purge, and a lens protection window.
5. The thermal condition monitoring system of claim 1, wherein the terminal data processing and control unit comprises a control unit and an industrial personal computer.
6. The thermal condition monitoring system of claim 5, wherein the first/second/third thermal imaging unit, the visible light imaging unit, the height/thickness acquisition unit, the first/second/third motion device and the cooling protection device are all connected to the control unit.
7. The thermal condition monitoring system according to claim 6, wherein the control unit is connected to a communication transmission unit, and the other end of the communication transmission unit is connected to an industrial personal computer.
8. The thermal condition monitoring system of claim 1, wherein the thermal imaging unit is a thermal infrared imager.
9. The thermal condition monitoring system of claim 1, wherein the visible light imaging unit is a high definition industrial camera.
10. The thermal condition monitoring system of claim 1, wherein the height/thickness acquisition unit is a laser range scanner.
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| CN202123023192.2U CN216524095U (en) | 2021-12-03 | 2021-12-03 | Thermal state monitoring system for empty ladle and tapping process of steel ladle |
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| CN202123023192.2U CN216524095U (en) | 2021-12-03 | 2021-12-03 | Thermal state monitoring system for empty ladle and tapping process of steel ladle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114235164A (en) * | 2021-12-03 | 2022-03-25 | 北京科技大学 | Thermal state monitoring system and method for empty ladle and tapping process of steel ladle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235164A (en) * | 2021-12-03 | 2022-03-25 | 北京科技大学 | Thermal state monitoring system and method for empty ladle and tapping process of steel ladle |
| CN114235164B (en) * | 2021-12-03 | 2024-04-19 | 北京科技大学 | Thermal state monitoring system and method for empty ladle and tapping process of ladle |
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