Automatic slag adding system and equipment for steelmaking tundish crystallizer

Abstract

The invention relates to the technical field of continuous crystallizer slag adding in the steelmaking technology, in particular to an automatic slag adding system and equipment for a steelmaking tundish crystallizer, and the automatic slag adding system for the steelmaking tundish crystallizer comprises a movable slag adding module, a dual-light acquisition module, a distance acquisition module and a slag adding control upper computer, the movable slag adding module outputs casting powder into the steel-making tundish crystallizer, and the double-light collecting module collects images and temperature distribution of the casting powder on an output path and the casting powder located in the steel-making tundish crystallizer in an infrared mode and an optical mode. The distance acquisition module is used for acquiring elevation distribution of casting powder in a steelmaking tundish crystallizer; and the slag adding control upper computer is used for controlling the moving path of the moving slag adding module and the output quantity of the casting powder, the slag adding control upper computer responds to the temperature abnormity of the casting powder in the steelmaking tundish crystallizer, causes of the temperature abnormity are analyzed, and the distinguishing accuracy of the casting powder quality defect and the misalignment of the slag adding operation is improved.

Description

Technical Field

[0001] The present invention relates to the field of continuous slag addition in the steelmaking process, and particularly to an automatic slag addition system and equipment for a tundish crystallizer in steelmaking. Background Art

[0002] When a continuous casting machine is pouring, adding protective slag to the crystallizer is the most important task in continuous casting production. The protective slag plays an extremely important role in continuous casting production, such as preventing secondary oxidation, lubrication, and adsorbing impurities. The continuous casting process requires the protective slag to form three-layer structures, namely a molten layer, a sintered layer, and a powder slag layer, during the casting process to better play its role.

[0003] For example, in the prior art, Chinese Patent Publication No. CN101497114A discloses a device for adding protective slag to a continuous casting machine crystallizer, which includes: a slag hopper for containing the protective slag; a protective slag distributor including a screw conveyor for transporting the protective slag and a plurality of quantitative distribution chambers installed along the length direction of the casing of the screw conveyor, wherein each quantitative distribution chamber has a slag spraying port; a protective slag pipeline assembly connecting the slag hopper and the screw conveyor; a compressed gas supply device for providing compressed gas for blowing the protective slag into each quantitative distribution chamber; and a controller for at least controlling the screw conveyor and the compressed gas supply device. The present invention also provides a method for adding protective slag to a continuous casting machine crystallizer of the present invention. This device is easy to install, has a wide application range, can ensure that the slag addition speed is adjustable and the distribution is uniform, and is suitable for automatic addition of protective slag.

[0004] However, the following technical problems exist in the above technology: First, the slag addition control based on a preset program cannot sense the actual three-dimensional distribution state of the protective slag in the crystallizer. When the molten steel liquid level fluctuates or the drawing speed changes, it is easy to cause uneven coverage thickness of the protective slag, destroying the balance of the three-layer structure. Second, there is a lack of real-time collection and analysis of the temperature field of the protective slag, making it difficult to timely detect local overheating or unmelted areas of the protective slag, and there are cases where surface defects of the cast slab are caused by abnormal temperature of the protective slag not being intervened in time. Third, it is impossible to distinguish the source of temperature abnormality, and only simple alarm shutdown can be executed, resulting in an increase in the unnecessary casting stop rate. For example, abnormal slag addition distribution caused by fluctuations in compressed gas pressure is often misjudged as a problem with the quality of the protective slag. Summary of the Invention

[0005] Therefore, the present invention provides an automatic slag addition system and equipment for a tundish crystallizer in steelmaking to solve at least one of the technical problems in the above background art.

[0006] To achieve the above object, on the one hand, the present invention provides an automatic slag adding system for a steelmaking tundish crystallizer, which includes a mobile slag adding module, a dual-light acquisition module, a distance acquisition module, and a slag adding control host computer. The mobile slag adding module outputs mold powder into the steelmaking tundish crystallizer at at least two output points, and the output points are mobile outputs; the dual-light acquisition module respectively acquires the images and temperature distributions of the mold powder on the output path and the mold powder in the steelmaking tundish crystallizer through infrared and optical dual modes; the distance acquisition module is used to obtain the elevation distribution of the mold powder in the steelmaking tundish crystallizer; the slag adding control host computer is respectively connected to the mobile slag adding module, the dual-light acquisition module, and the distance acquisition module, and is used to control the moving path and the mold powder output amount of the mobile slag adding module, and the slag adding control host computer responds to the temperature abnormality of the mold powder in the steelmaking tundish crystallizer and executes the following process:

[0007] Identify whether the elevation distribution matches the temperature distribution. If so, perform slag adding control based on the temperature distribution to ensure that the temperature distribution of the mold powder in the steelmaking tundish crystallizer returns to normal. If not, obtain the temperature distribution of the mold powder with temperature abnormality stored in the dual-light acquisition module when it is on the output path and identify whether there is temperature abnormality when it is on the output path. In response to the existence of temperature abnormality, output a slag abnormality warning. In response to the non-existence of temperature abnormality, mark the relevant data in the execution process and store it; wherein, the temperature abnormality means that there is a closed area where the temperature of the mold powder in the steelmaking tundish crystallizer or on the output path exceeds the standard range.

[0008] As a preferred technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, the dual-light acquisition module stores the images and temperature distributions of each frame of the mold powder on the output path collected, and stores the output position and output time log of the mold powder on the output path in the steelmaking tundish crystallizer in the same storage path at the same time.

[0009] As a preferred technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, in response to the acquisition requirement of the temperature distribution of the mold powder with temperature abnormality on the output path by the slag adding control host computer, the dual-light acquisition module retrieves the images and corresponding temperature distributions of several frames of the mold powder on the output path with different output times but the output positions matching the position of the mold powder with temperature abnormality based on the position of the mold powder with temperature abnormality.

[0010] As an optimal technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, the slag adding control host computer determines that there is a temperature anomaly when the shielding slag is in the output path and generates a control instruction for the output shielding slag anomaly warning in response to several frames of shielding slag images with different output time logs but matching positions of the shielding slag with abnormal output positions and temperatures and the corresponding temperature distributions, provided that the temperature distribution of any one of the shielding slag images has the temperature anomaly.

[0011] As an optimal technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, the dual-light acquisition module has a storage determination condition for the shielding slag images on the output path, and the dual-light acquisition module only stores the shielding slag images on the output path that meet the storage determination condition, as well as the corresponding output positions and output time logs;

[0012] The determination condition is: the image is the nearest frame image before the shielding slag completely detaches from the moving slag adding module, or the image is the nearest frame image after the shielding slag contacts the shielding slag in the crystallizer, or the image is an intermediate frame image between the nearest frame image before the shielding slag completely detaches from the moving slag adding module and the nearest frame image after the shielding slag contacts the shielding slag in the crystallizer.

[0013] As an optimal technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, the slag adding control host computer performs feature encoding on the relevant data during the execution process of the mark, and the encoding rules include: converting the central coordinates of the temperature anomaly area into three-dimensional parameters in the coordinate system of the moving slag adding module, and associating the marked temperature anomaly duration with the corresponding moving path speed parameters.

[0014] As an optimal technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, after the slag adding control host computer issues an output shielding slag anomaly warning, it generates a verification instruction set corresponding to the temperature anomaly area, and the verification instruction set includes:

[0015] Controlling the moving slag adding module to pause the operation at the current output point, and driving the dual-light acquisition module to perform three interval acquisitions on the temperature anomaly area, and the three acquisition times respectively correspond to the peak, trough and balance point of the crystallizer vibration cycle;

[0016] Calculating the standard deviation based on the temperature distribution data of the three acquisitions. If the standard deviation exceeds the preset fluctuation threshold, it is determined as a pseudo anomaly caused by the crystallizer vibration interference, and the warning is lifted.

[0017] As an optimal technical solution of the automatic slag adding system for the steelmaking tundish crystallizer, the distance acquisition module moves following the moving slag adding module, and the distance acquisition module records the elevation parameters of the points after slag adding during the movement.

[0018] On the other hand, the present invention also provides an automatic slag adding device for a steelmaking tundish crystallizer, which is applied to the automatic slag adding system for a steelmaking tundish crystallizer described in any of the above solutions. The automatic slag adding device for a steelmaking tundish crystallizer includes:

[0019] Two moving slag adding components arranged above the steelmaking tundish crystallizer, and two groups of infrared acquisition devices and cameras. Each group of infrared acquisition devices and cameras cross-acquire images and temperature distributions on the other side.

[0020] As a preferred technical solution of the automatic slag adding device for a steelmaking tundish crystallizer, the automatic slag adding device for a steelmaking tundish crystallizer further includes a height measuring probe fixedly connected to the moving slag adding component. The height measuring probe is used to acquire the elevation distribution of the flux in the steelmaking tundish crystallizer.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: a closed-loop diagnosis mechanism for tracing the source of flux anomalies is constructed. By synchronously tracking the state evolution of the flux in the output path and the final distribution characteristics in the crystallizer, accurate discrimination of the cause of temperature anomalies is achieved. It breaks through the problem of false anomaly judgment caused by "only monitoring the internal state of the crystallizer" in the traditional method, and improves the discrimination accuracy rate between flux quality defects and inaccurate slag adding operations.

[0022] Furthermore, the present invention synchronously records the flight trajectory image and temperature distribution of the flux after it leaves the slag adding module (output path monitoring) through a dual-light acquisition module, and performs spatio-temporal matching with the elevation-temperature data at the final deposition position in the crystallizer to form a complete data chain of the state evolution of the flux. When a temperature anomaly closed area is detected in the crystallizer, the host computer retroactively traces the historical data of the flux at the corresponding position in the output path for this area: if the flux at the same spatial position in the output path already has a temperature anomaly, it is determined that it is a problem with the flux itself, such as abnormal composition leading to an early melting temperature. If the temperature of the flux in the output path is normal, it is determined that the slag adding operation parameters are inaccurate, such as insufficient covering thickness leading to local overheating. The above settings improve the discrimination accuracy rate of the cause of the anomaly.

[0023] Furthermore, the dual-light acquisition module of the present invention establishes a bound storage relationship between the flux image and temperature distribution on the output path and the corresponding output position coordinates and timestamps to form a traceable spatio-temporal database. This storage method ensures that: the temperature anomaly points in each steelmaking tundish crystallizer can be quickly associated with the operation parameters of their source output points, the process state changes of the flux from output to deposition can be completely reproduced, and the diffusion trend of the anomaly area can be predicted through the temperature gradient changes of multiple frames of images. This design shortens the anomaly diagnosis time by about and reduces the false judgment rate.

[0024] Furthermore, the upper computer for slag addition control in the present invention executes a differential control strategy based on the traceability result: when it is determined that the quality of the powder is abnormal, an alarm is immediately triggered and the characteristic parameters of this batch of powder are marked; when it is determined that the operating parameters are inaccurate, the moving path speed and output are automatically adjusted, and the deviation data is recorded for process optimization. This classification processing mechanism reduces the number of unnecessary casting stops and provides key data support for the powder quality evaluation system.

[0025] Furthermore, for the working conditions where no abnormalities are detected, the system automatically marks and stores the following associated data: the initial temperature distribution of the powder on the output path, the elevation-temperature matching degree at the corresponding position in the mold, and the actual execution deviation of the slag addition operation parameters. By continuously optimizing the abnormality determination threshold using the above associated data through machine learning algorithms, the adaptive ability of the system can be improved with the running time, and the false alarm rate can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural block diagram of the automatic slag addition system for the tundish mold in the embodiment of the present invention;

[0027] Figure 2 is a structural schematic diagram of the automatic slag addition equipment for the tundish mold in the embodiment of the present invention;

[0028] In the figure: 1, moving slag addition component; 2, installation position of the detector; 3, tundish mold for steelmaking; 4, powder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the objectives and advantages of the present invention clearer, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and do not limit the protection scope of the present invention.

[0031] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1 as shown, which are respectively the structural block diagrams of the automatic slag adding system for the steelmaking tundish crystallizer in the embodiments of the present invention. The automatic slag adding system for the steelmaking tundish crystallizer includes a mobile slag adding module, a dual-light acquisition module, a distance acquisition module, and a slag adding control host computer. The mobile slag adding module outputs mold powder into the steelmaking tundish crystallizer at at least two output points, and the output points are mobile outputs; the dual-light acquisition module respectively acquires the images and temperature distributions of the mold powder on the output path and the mold powder in the steelmaking tundish crystallizer through infrared and optical dual modes; the distance acquisition module is used to obtain the elevation distribution of the mold powder in the steelmaking tundish crystallizer; the slag adding control host computer is respectively connected to the mobile slag adding module, the dual-light acquisition module, and the distance acquisition module, and is used to control the movement path and the mold powder output amount of the mobile slag adding module, and the slag adding control host computer responds to the temperature abnormality of the mold powder in the steelmaking tundish crystallizer and executes the following processes:

[0034] Identify whether the elevation distribution matches the temperature distribution. If so, perform slag adding control based on the temperature distribution to ensure that the temperature distribution of the mold powder in the steelmaking tundish crystallizer returns to normal. If not, obtain the temperature distribution of the mold powder with temperature abnormality stored in the dual-light acquisition module when it is on the output path and identify whether there is temperature abnormality when it is on the output path. In response to the existence of temperature abnormality, output a slag abnormality warning (that is, the temperature abnormality in the crystallizer is caused by the temperature abnormality of the output mold powder). In response to the non-existence of temperature abnormality, mark the relevant data in the execution process and store it; wherein, the temperature abnormality satisfies that there is a closed area where the temperature of the mold powder in the steelmaking tundish crystallizer or on the output path exceeds the standard range.

[0035] In the above embodiments, a closed-loop diagnosis mechanism for tracing the abnormality of the mold powder is constructed. By synchronously tracking the state evolution of the mold powder in the output path and the final distribution characteristics in the mold, the accurate discrimination of the cause of temperature abnormality is realized. It has breakthroughly solved the problem of abnormal misjudgment caused by "only monitoring the internal state of the mold" in the traditional method, and improved the discrimination accuracy rate between the quality defects of the mold powder and the inaccuracy of the slag addition operation. On the basis of the above technical effects, the flight trajectory image and temperature distribution of the mold powder after it detaches from the slag addition module are synchronously recorded by the dual-light acquisition module (i.e., output path monitoring), and are spatially and temporally matched with the elevation-temperature data at the final deposition position in the mold to form a complete data chain of the state evolution of the mold powder. When a temperature abnormal closed area is detected in the mold, the host computer retroactively traces the historical data of the mold powder in the output path in this area: if the mold powder at the same spatial position in the output path already has a temperature abnormality, it is determined that it is a quality problem of the mold powder itself, such as abnormal composition resulting in an early melting temperature; if the temperature of the mold powder in the output path is normal, it is determined that the slag addition operation parameters are inaccurate, such as insufficient covering thickness resulting in local overheating. The above settings improve the discrimination accuracy rate of the cause of the abnormality.

[0036] It should be understood that identifying whether the elevation distribution conforms to the temperature distribution specifically means identifying whether the area with temperature abnormality also stores abnormal elevation parameters (i.e., local height is too high or too low).

[0037] To ensure the subsequent detection process, the dual-light acquisition module stores the collected images of the mold powder and temperature distribution in each frame on the output path, and at the same time stores the output position and output time logs of the mold powder on the output path in the steelmaking tundish mold in the same storage path. Specifically, during the movement process of the mold powder from the output end of the moving slag addition module to contacting the slag layer in the mold, synchronous trigger acquisition of the dual-light acquisition module is carried out:

[0038] When the mold powder particles completely detach from the output end, the initial temperature distribution and flight trajectory image at the moment of detachment are collected and recorded as the first key frame. When the mold powder contacts the surface of the slag layer in the mold, the temperature distribution and image at the moment of contact are collected. Between the first key frame and the second key frame, intermediate process frames are collected at fixed time intervals;

[0039] The process of data binding storage includes:

[0040] When each frame of image and the corresponding temperature distribution data are generated, the following parameters are automatically associated and written into the same data packet:

[0041] Output position coordinates: According to the real-time pose data (including X / Y / Z axis coordinates and output port inclination angle) of the moving slag addition module, it is converted into three-dimensional coordinates in the mold coordinate system;

[0042] Output time log: records the precise timestamp (accurate to milliseconds) from the start of output of the mobile slag adding module to the completion of the current frame acquisition;

[0043] Motion state mark: mark the frame corresponding to the protective slag in the free flight stage, collision transition stage or deposition stability stage;

[0044] Based on the above embodiment, this embodiment further stores the path construction rules:

[0045] The data is organized in a hierarchical directory structure. The root directory is named by "date + sequence number", and the subdirectory levels include:

[0046] First layer: partition by output point coordinates (divide the mold plane into 10cm×10cm grids, each grid corresponds to an independent folder);

[0047] The second level: classification by the movement stage of protective slag (free flight / collision transition / deposition stability);

[0048] Layer 3: Arranges data packets in timestamp order to ensure spatiotemporal continuity;

[0049] The above-mentioned setting of this embodiment makes it possible to quickly locate the source output point of the abnormal protective slag and the status data of the entire movement process by reversely searching the historical data packets in the corresponding grid folder when a temperature abnormality is detected at a certain position in the crystallizer, thereby providing a complete chain of evidence for the cause analysis of the abnormality.

[0050] Specifically, the dual-light acquisition module responds to the acquisition demand of the slag adding control host computer for the temperature distribution of the protective slag with temperature abnormality on the output path, and retrieves several frames of images of the protective slag on the output path and the corresponding temperature distribution based on the position of the protective slag with temperature abnormality, which have different output time logs but the output position matches the position of the protective slag with temperature abnormality. The slag adding control host computer responds to the temperature abnormality in any frame of the protective slag image among the several frames of protective slag images and the corresponding temperature distribution, which have different output time logs but the output position matches the position of the protective slag with temperature abnormality, and determines that the protective slag has temperature abnormality when it is in the output path, and generates a control instruction for the output protective slag abnormality warning. The above-mentioned setting is intended to establish a dynamic tracing mechanism for protective slag temperature abnormality, and accurately distinguish the causes of temperature abnormality (defects in the protective slag itself or inaccurate slag adding operation) through the spatiotemporal correlation between the historical status data on the output path and the final distribution characteristics in the crystallizer. Its core principle is: when an abnormal temperature area is detected in the crystallizer, the system reversely retrieves the historical data stored in the dual-light acquisition module based on the coordinates of the abnormal position, and filters out all the protective slag images and temperature distributions at different times that have covered the position during the output stage. By analyzing the initial state of these protective slags in the output path, it is determined whether the abnormality already exists during the slag adding process.

[0051] As a further technical optimization of the above embodiments, to avoid consumption of computing power and storage capacity, the dual-light acquisition module is provided with storage determination conditions for the mold powder images on the output path, and the dual-light acquisition module only stores the mold powder images that meet the storage determination conditions on the output path, as well as the corresponding output position and output time logs;

[0052] The determination conditions are as follows: the image is the nearest frame image before the mold powder completely detaches from the moving slag adding module, or the image is the nearest frame image after the mold powder contacts the mold powder in the mold, or the image is an intermediate frame image between the nearest frame image before the mold powder completely detaches from the moving slag adding module and the nearest frame image after the mold powder contacts the mold powder in the mold. Specifically, the dual-light acquisition module establishes a bound storage relationship between the mold powder images, temperature distributions on the output path and the corresponding output position coordinates and timestamps, forming a traceable spatio-temporal database. This storage method ensures that: the temperature anomaly points in each steelmaking tundish mold can be quickly associated with the operation parameters of their source output points, the process state changes of the mold powder from output to deposition can be completely reproduced, and the diffusion trend of the abnormal area can be predicted through the temperature gradient changes of multiple frames of images. This design shortens the abnormal diagnosis time by about and reduces the misjudgment rate.

[0053] Specifically, the slag adding control host computer performs feature encoding on the relevant data during the execution process of the marking. The encoding rules include: converting the center coordinates of the temperature abnormal area into three-dimensional parameters in the coordinate system of the moving slag adding module, and associating the temperature abnormal duration with the corresponding moving path speed parameters. This classification processing mechanism reduces the number of unnecessary casting stops, and at the same time provides key data support for the mold powder quality evaluation system. In this embodiment, the relevant data can be used as training data or empirical data for subsequent operation processes after encoding. Due to the specificity of the data itself, it can play a better supporting role in optimizing subsequent control.

[0054] To further reduce the misjudgment rate, after the slag adding control host computer outputs a mold powder abnormality warning, it generates a verification instruction set corresponding to the temperature abnormal area. The verification instruction set includes:

[0055] Controlling the moving slag adding module to pause the operation at the current output point, and driving the dual-light acquisition module to perform three interval acquisitions on the temperature abnormal area. The three acquisition times correspond to the peak, trough and balance point of the mold vibration cycle respectively;

[0056] Calculate the standard deviation based on the temperature distribution data collected three times. If the standard deviation exceeds the preset fluctuation threshold, it is determined as a pseudo - anomaly caused by the mold vibration interference, and the early warning is lifted. It can be understood that the core of this calibration mechanism lies in distinguishing real temperature anomalies from measurement noise caused by mold vibration. Its effectiveness depends on the correlation between vibration characteristics and temperature fluctuations. In this embodiment, the preset fluctuation threshold is 3.5 °C, and it can be set in combination with the actual working conditions during implementation.

[0057] Please refer to Figure 2 as shown in Figure 2 the schematic diagram of the single - side slag - adding device. This embodiment also provides an automatic slag - adding device for a steel - making tundish mold, which is applied to the automatic slag - adding system for a steel - making tundish mold described in any of the above solutions. The automatic slag - adding device for a steel - making tundish mold includes:

[0058] Two moving slag - adding components 1 arranged above the steel - making tundish mold 3. The moving slag - adding components 1 are used to output the protective slag 4 into the steel - making tundish mold 3 (not fully shown in the figure), and two groups of infrared acquisition devices and cameras. Each group of infrared acquisition devices and cameras cross - acquire the images and temperature distributions on the other side. It also includes a height - measuring probe fixedly connected to the moving slag - adding component. The height - measuring probe is used to acquire the elevation distribution of the protective slag in the steel - making tundish mold. Specifically, the height - measuring probe, each group of infrared acquisition devices and cameras are all integrated in the reserved installation position 2 of the detection part, move along with the moving slag - adding component, and record the elevation parameters of the points after slag - adding.

[0059] The flowcharts or block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of devices, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware - based device for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0060] So far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic slag adding system for a steelmaking tundish crystallizer, characterized in that, Including: A moving slag adding module that outputs protective slag into the crystallizer of the steelmaking tundish at at least two output points, and the output points are for moving output; A dual-light acquisition module that respectively acquires the images and temperature distributions of the protective slag on the output path and the protective slag in the crystallizer of the steelmaking tundish through infrared and optical dual modes; A distance acquisition module for obtaining the elevation distribution of the protective slag in the crystallizer of the steelmaking tundish; A slag adding control host computer, which is respectively connected to the moving slag adding module, the dual-light acquisition module and the distance acquisition module, and is used to control the moving path and the output amount of the protective slag of the moving slag adding module, and the slag adding control host computer responds to the temperature abnormality of the protective slag in the crystallizer of the steelmaking tundish and executes the following processes: Identify whether the elevation distribution conforms to the temperature distribution. If so, perform slag adding control based on the temperature distribution to ensure that the temperature distribution of the protective slag in the crystallizer of the steelmaking tundish returns to normal. If not, obtain the temperature distribution of the protective slag with temperature abnormality stored by the dual-light acquisition module when it is on the output path and identify whether there is temperature abnormality when it is on the output path. In response to the existence of temperature abnormality, output a protective slag abnormality warning. In response to the non-existence of temperature abnormality, mark the relevant data in the execution process and store it; Wherein, the temperature abnormality satisfies that there is a closed area where the temperature of the protective slag in the crystallizer of the steelmaking tundish or on the output path exceeds the standard range.

2. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 1, characterized in that, The dual-light acquisition module stores the images and temperature distributions of each frame of the protective slag on the output path collected, and stores the output position and output time log of the protective slag on the output path in the crystallizer of the steelmaking tundish at the same storage path while storing.

3. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 2, wherein In response to the acquisition requirement of the temperature distribution of the protective slag with temperature abnormality on the output path by the slag adding control host computer, the dual-light acquisition module retrieves the images and corresponding temperature distributions of several frames of the protective slag on the output path with different output time logs but the output position matching the position of the protective slag with temperature abnormality based on the position of the protective slag with temperature abnormality.

4. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 3, wherein, In response to the existence of the temperature abnormality in the temperature distribution of any frame of the protective slag images and the corresponding temperature distributions with different output time logs but the output position matching the position of the protective slag with temperature abnormality, the slag adding control host computer determines that there is temperature abnormality when the protective slag is on the output path, and generates a control instruction for outputting the protective slag abnormality warning.

5. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 4, characterized in that, The dual-light acquisition module is provided with a storage determination condition for the images of the protective slag on the output path, and the dual-light acquisition module only stores the images of the protective slag on the output path that meet the storage determination condition and the corresponding output position and output time log; The determination condition is: the image is the nearest frame image before the protective slag completely detaches from the moving slag adding module, or the image is the nearest frame image after the protective slag contacts the protective slag in the crystallizer, or the image is an intermediate frame image between the nearest frame image before the protective slag completely detaches from the moving slag adding module and the nearest frame image after the protective slag contacts the protective slag in the crystallizer.

6. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 1, wherein, The slag addition control host computer performs feature encoding on the relevant data during the execution process of the marking, and the encoding rules include: converting the central coordinates of the temperature abnormal area into three-dimensional parameters in the coordinate system of the mobile slag addition module, and the associated marking of the temperature abnormal duration and the corresponding moving path speed parameters.

7. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 1, wherein After the slag addition control host computer outputs the abnormal warning of the shielding slag, it generates a verification instruction set corresponding to the temperature abnormal area, and the verification instruction set includes: Controlling the mobile slag addition module to suspend the operation at the current output point, and driving the dual-light acquisition module to perform three interval acquisitions on the temperature abnormal area. The three acquisition times correspond to the peak, valley and balance point of the mold oscillation cycle respectively; Calculating the standard deviation based on the temperature distribution data collected three times. If the standard deviation exceeds the preset fluctuation threshold, it is determined as a pseudo-abnormality caused by mold oscillation interference, and the warning is lifted.

8. The automatic slag adding system for the steelmaking tundish crystallizer according to claim 1, wherein, The distance acquisition module moves along with the mobile slag addition module, and the distance acquisition module records the elevation parameters of the point after slag addition during movement.

9. An automatic slag adding device for a steelmaking tundish crystallizer, characterized in that, Applied to the automatic slag addition system for the steelmaking tundish mold according to any one of claims 1-8, the automatic slag addition equipment for the steelmaking tundish mold includes: Two mobile slag addition components arranged above the steelmaking tundish mold, and two groups of infrared acquisition devices and cameras. Each group of infrared acquisition devices and cameras cross-collect images and temperature distributions on the other side.

10. The automatic slag adding device for the steelmaking tundish crystallizer according to claim 9, characterized in that, The automatic slag addition equipment for the steelmaking tundish mold further includes a height measuring probe fixedly connected to the mobile slag addition component, and the height measuring probe is used to collect the elevation distribution of the shielding slag in the steelmaking tundish mold.

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