An automatic slagging system, method, medium, and apparatus for a continuous caster mold

Abstract

The application discloses a kind of automatic slagging system, method, medium and equipment of continuous casting machine crystallizer, the system includes: radioactive source crystallizer material level detection device, controller, slag machine;Wherein, radioactive source crystallizer material level detection device is used to detect the actual thickness of the crystallizer in the protection slag after the crystallizer liquid level is stable according to the set detection time sequence, and the actual thickness mean value corresponding to each detection time is calculated in combination with the actual thickness detected at the previous one or more detection times;Controller is connected with radioactive source crystallizer material level detection device, for comparing whether the difference of actual thickness mean value of adjacent two times is in the set threshold range in real time, and obtaining comparison result;According to the comparison result, the amount of slagging is calculated;Slag machine is used to control the slag according to the amount of slagging.

Description

Technical Field

[0001] This application relates to the field of metallurgical technology, and in particular to an automatic slag feeding system, method, medium and equipment for a continuous casting machine crystallizer. Background Technology

[0002] The mold flux mainly consists of a powder slag layer, a molten slag layer, and a liquid slag layer. In continuous casting production, it can ensure good melting and crystallization performance, achieve better lubrication, heat transfer, heat preservation, and inclusion adsorption, and help the continuous casting machine increase casting speed, improve quality, and reduce accidents.

[0003] Currently, although automatic slag feeders are commonly used for crystallizer protective slag, the amount of slag added can only be preset according to the cross-section, width, thickness, and pulling speed of the crystallizer, and then manually adjusted according to the observation of the staff. This cannot achieve a dynamic balance between slag formation and slag addition, thus affecting the performance of the protective slag and even leading to quality accidents and production accidents. Summary of the Invention

[0004] This invention provides an automatic slag feeding system, method, medium, and equipment for a continuous casting machine crystallizer, in order to solve or partially solve the technical problem in the prior art that the dynamic balance between slag formation and slag feeding cannot be achieved.

[0005] To address the aforementioned technical problems, a first aspect of the present invention discloses an automatic slag feeding system for a continuous casting machine crystallizer, the system comprising: a radioactive source crystallizer level detection device, a controller, and a slag feeder; wherein,

[0006] The radioactive source crystallizer level detection device is used to detect the actual thickness of the protective slag in the crystallizer according to a set detection time sequence after the liquid level in the crystallizer has stabilized, and to calculate the average actual thickness at each detection time by combining the actual thickness detected at the previous one or more detection times.

[0007] The controller is connected to the material level detection device of the radioactive source crystallizer, and is used to compare in real time whether the difference between two adjacent average actual thickness values ​​is within a set threshold range and obtain the comparison result; the amount of slag to be fed is calculated based on the comparison result.

[0008] A slag feeder is used to control the slag adjustment based on the slag input amount.

[0009] Optionally, the system further includes: an electromagnetic induction crystallizer level detection device and a stopper rod control device;

[0010] The electromagnetic induction crystallizer liquid level detection device is connected to the controller and is used to detect the actual liquid level of the crystallizer by electromagnetic induction detection.

[0011] The controller is used to calculate the stopper control value based on the actual liquid level;

[0012] The stopper control device is connected to the controller and is used to control the stopper opening according to the stopper control value, so as to control the rise in the liquid level of the crystallizer.

[0013] Optionally, the controller is also configured to activate the radioactive source crystallizer level detection device when the protective slag in the crystallizer is manually controlled to reach the initial thickness, and to detect the initial thickness at the activation time.

[0014] Optionally, the controller is further configured to:

[0015] judge The relationship between (k1, k2); where i represents the i-th detection time, and i≥1, and i+1 represents the (i+1)-th detection time. This represents the average actual thickness at the i-th detection time. Let (k1, k2) represent the average actual thickness at the (i+1)th detection time, and (k1, k2) represent the set threshold range.

[0016] like Initiate the protective slag reduction compensation and calculate the slag input amount according to the first compensation formula; the first compensation formula is: Q i+1 =Q i (1―x1%); where Q i+1 Q represents the amount of slag fed at the (i+1)th detection time. i x1% represents the amount of slag fed at the i-th detection time, and x1% represents the first slag adjustment ratio, which is a constant.

[0017] Optionally, the controller is further configured to:

[0018] like Initiate the protective slag increment compensation and calculate the slag input amount according to the second compensation formula; the second compensation formula is: Q i+1 =Q i (1+x2%); where x2% represents the second slag adjustment ratio, which is a constant.

[0019] Optional, x2% = x1%.

[0020] Optionally, the controller is further configured to:

[0021] like The amount of slag fed at the (i+1)th detection time remains unchanged, corresponding to the amount fed at the ith detection time.

[0022] In a second aspect, an automatic slag-adding method for a continuous casting machine crystallizer is disclosed, the method being applied to the automatic slag-adding system for the continuous casting machine crystallizer as described in the first aspect, the method comprising:

[0023] After the liquid level in the crystallizer stabilizes, the actual thickness of the protective slag in the crystallizer is detected by the radioactive source crystallizer level detection device according to the set detection time sequence, and the average actual thickness is calculated by combining the actual thickness detected at each detection time with the actual thickness detected at the previous one or more detection times.

[0024] The controller is used to compare in real time whether the difference between two adjacent average actual thickness values ​​is within a set threshold range, and the comparison result is obtained; the amount of slag to be fed is calculated based on the comparison result.

[0025] The slag is adjusted using a slag feeder based on the slag input amount.

[0026] A third aspect of the present invention discloses a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps of the method described in the second aspect.

[0027] A fourth aspect of the present invention discloses a computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method described in the second aspect.

[0028] Through one or more technical solutions of the present invention, the present invention has the following beneficial effects or advantages:

[0029] The technical solution of this invention utilizes a radioactive source crystallizer level detection device to detect the actual thickness of the protective slag inside the crystallizer according to a set detection time sequence. At each detection time, the device calculates the average actual thickness by combining the actual thickness detected at the previous one or more detection times, thereby enabling dynamic detection of the protective slag thickness. Furthermore, by combining the controller with a real-time comparison of the difference between two adjacent average actual thicknesses to see if it falls within a set threshold range, and calculating the slag feed amount based on the comparison result, the device can promptly adjust the slag feed amount in response to changes in the protective slag thickness, thus maintaining a dynamic balance between slag formation and slag addition, ensuring the normal performance of the protective slag, and preventing quality and production accidents.

[0030] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0032] In the attached diagram:

[0033] Figure 1 A schematic diagram of an automatic slag feeding system for a continuous casting machine crystallizer according to an embodiment of the present invention is shown.

[0034] Figure 2 A schematic diagram illustrating the implementation principle of a radioactive source crystallizer level detection device according to an embodiment of the present invention is shown.

[0035] Figure 3 A flowchart of an automatic slag feeding method for a continuous casting machine crystallizer according to an embodiment of the present invention is shown.

[0036] Explanation of reference numerals in the attached drawings: 1. Crystallizer; 2. Electromagnetic induction crystallizer liquid level detection device; 3. Radioactive source crystallizer material level detection device; 4. Controller; 5. Slag feeder; 6. Slag feed pipeline; 7. Stopper rod control device; 8. Transmitter 301; 9. Receiver 302. Detailed Implementation

[0037] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0038] Firstly, in order to achieve a dynamic balance between slag preparation and slag addition, ensure a stable slag layer structure, and support the performance of the protective slag, such as... Figure 1 As shown in the embodiments of this specification, the automatic slag feeding system for the continuous casting machine crystallizer includes at least: an electromagnetic induction crystallizer level detection device 2, a stopper rod control device 7, a radioactive source crystallizer level detection device 3, a controller 4, and a slag feeder 5.

[0039] In one alternative implementation, the process of controlling the liquid level in the crystallizer 1 by combining the electromagnetic induction crystallizer liquid level detection device 2, the stopper rod control device 7, and the controller 4 is described in advance.

[0040] The electromagnetic induction crystallizer liquid level detection device 2 is connected to the controller 4 and is used to detect the actual liquid level of the crystallizer 1 using electromagnetic induction detection.

[0041] The controller 4 is used to calculate the stopper control value based on the actual liquid level.

[0042] The stopper control device 7, connected to the controller 4, is used to control the stopper opening according to the stopper control value, thereby controlling the rise and fall of the liquid level in crystallizer 1 until the liquid level in crystallizer 1 stabilizes. A stable liquid level in crystallizer 1 means that both the rise and fall of the liquid level in crystallizer 1 are within allowable values. For example, if both the rise and fall of the liquid level in crystallizer 1 are within 0.5% of the current liquid level, it indicates that the liquid level in crystallizer 1 is stable.

[0043] Once the liquid level in crystallizer 1 is stable, the protective slag addition scheme can be implemented.

[0044] It is worth noting that the electromagnetic induction crystallizer liquid level detection device 2 in this technical solution is only used to detect the liquid level, while the actual thickness of the protective slag is measured by the radioactive source crystallizer material level detection device 3, which is more accurate.

[0045] In this embodiment, slag can be added manually or automatically controlled by controller 4. For example, after the casting machine's pouring speed stabilizes, the operator manually adjusts the amount of slag added to maintain a suitable thickness of protective slag in the crystallizer 1. Subsequent additions or reductions of slag are adjusted based on this suitable thickness. This suitable thickness is also referred to as the initial thickness.

[0046] The controller 4 is also used to activate the radioactive source crystallizer level detection device 3 when the protective slag in the crystallizer 1 reaches the initial thickness under manual control. At this time, the slag addition is switched to automatic adjustment, and the initial thickness is detected at the activation time.

[0047] After the radioactive source crystallizer level detection device 3 is turned on, it uses a radioactive source to detect the actual thickness of the protective slag. (See attached image) Figure 2 This is a schematic diagram illustrating the implementation principle of the radioactive source crystallizer level detection device 3. The crystallizer 1 contains molten steel and a protective slag, with the protective slag positioned above the molten steel. The radioactive source crystallizer level detection device 3 includes an emitter 301 and a receiver 302, installed on both sides of the crystallizer 1. The emitter 301 emits a radioactive source into the crystallizer, and the receiver 302 receives the radioactive source, calculating the actual thickness of the protective slag accordingly.

[0048] Furthermore, the radioactive source crystallizer level detection device 3 is used to detect the actual thickness of the protective slag in the crystallizer 1 according to a set detection time sequence after the liquid level in the crystallizer 1 has stabilized, and to calculate the corresponding average actual thickness at each detection time by combining the actual thickness detected at the previous one or more detection times.

[0049] Specifically, the detection time sequence can be set at predetermined intervals. For example, a detection time can be set every second, but this is not a limitation. The detection time sequence could be: 10:00 (initial detection time), 10:01, 10:02… The actual thickness of the protective slag in crystallizer 1 is detected at 10:00 (initial detection time), 10:01, 10:02… according to the set detection time sequence. Furthermore, at each detection time, the average actual thickness is calculated by combining the actual thickness detected at the previous one or more detection times. For example, if the current detection time is 10:01, the average actual thickness of the protective slag at 10:01 is calculated by combining the actual thickness detected at the previous second (i.e., 10:00). If the current detection time is 10:05, the average actual thickness of the protective slag at 10:05 is calculated by combining the previous four actual thicknesses. Of course, the number of actual thicknesses combined can be dynamically adjusted or kept constant.

[0050] The controller 4 is connected to the radioactive source crystallizer material level detection device 3, and is used to compare in real time whether the difference between two adjacent average actual thickness values ​​is within a set threshold range and obtain the comparison result; the amount of slag fed is calculated based on the comparison result.

[0051] In the specific implementation process, judgment The relationship between (k1, k2); where i represents the i-th detection time, and i≥1, and i+1 represents the (i+1)-th detection time. This represents the average actual thickness at the i-th detection time. Let (k1, k2) represent the average actual thickness at the (i+1)th detection time, and (k1, k2) represent the set threshold range. This represents the difference between two consecutive average actual thickness values. It is worth noting that the average actual thickness value corresponding to the first detection time is actually the initial thickness h1, and (k1, k2) represents the set threshold range.

[0052] like If the difference between two consecutive average actual thickness values ​​is above the upper limit of a set threshold range, the slag feed rate exceeds the consumption rate in the crystallizer, and the protective slag height increases, then the slag feed rate needs to be reduced. In this case, protective slag reduction compensation is activated, and the slag feed rate is calculated according to the first compensation formula.

[0053] The first compensation formula is:

[0054] Q i+1 =Q i (1―x1%)…….Formula 1

[0055] Among them, Q i+1 Q represents the amount of slag fed at the (i+1)th detection time. iLet x represent the amount of slag fed at the i-th detection time, and x1% represent the first slag adjustment ratio, which is a constant, such as 5%, but not a limitation. In an optional implementation, the first slag adjustment ratio corresponding to different detection times can be the same or different, so as to adjust the amount of slag fed more flexibly to quickly meet the conditions. That is, the difference between the average actual thickness of two adjacent tests can be quickly adjusted to within the range of (k1, k2).

[0056] like If the difference between two consecutive average actual thickness values ​​is above the lower limit of a set threshold range, the slag feed rate is less than the consumption rate in the crystallizer, and the protective slag height decreases, then the slag feed rate needs to be increased. In this case, protective slag increment compensation is activated, and the slag feed rate is calculated according to the second compensation formula.

[0057] The second compensation formula is:

[0058] Q i+1 =Q i (1+x2%)…….Formula 2

[0059] Where x2% represents the second slag adjustment ratio, which is a constant. In an optional embodiment, the second slag adjustment ratio corresponding to different detection times can be the same or different, so as to more flexibly adjust the slag input amount to quickly meet the conditions. That is, the difference between the average values ​​of two adjacent actual thicknesses can be quickly adjusted to within the range of (k1, k2). In an optional embodiment, x2% = x1%, for example, x2% = x1% = 5%, but this is not a limitation.

[0060] As can be seen from the above formula, the slag feed rate adjustment at each moment dynamically references the slag feed rate at the previous moment, thus achieving a real-time dynamic balance between slag processing and slag addition, ensuring a stable slag layer structure.

[0061] like This indicates that the amount of slag added and the amount of slag consumed (slag melting) are equal at this point. Therefore, at the (i+1)th detection time, the amount of slag added corresponding to the ith detection time remains unchanged. For example, suppose that at the second detection time... The amount of slag fed at the second detection time will remain unchanged from the amount of slag fed at the first detection time.

[0062] The slag feeder 5 is used to control the slag adjustment according to the slag input amount. Specifically, the slag feeder 5 adds slag into the crystallizer 1 through the slag feed pipe 6.

[0063] The technical solution of this invention utilizes a radioactive source crystallizer level detection device to detect the actual thickness of the protective slag inside the crystallizer according to a set detection time sequence. At each detection time, the average actual thickness is calculated by combining the actual thickness detected at the previous one or more detection times, thus enabling dynamic detection of the protective slag thickness. Furthermore, by combining this with a controller to compare the difference between two adjacent average actual thicknesses in real time to see if it falls within a set threshold range, and calculating the slag feed amount based on the comparison result, the slag feed amount can be adjusted promptly in response to changes in the protective slag thickness. This maintains a dynamic balance between slag formation and slag addition, ensuring the normal performance of the protective slag and preventing quality and production accidents. In addition, timely adjustment of the slag feed amount by referring to changes in the protective slag thickness also ensures a stable slag layer structure, maximizing the protection of the molten steel.

[0064] Secondly, based on the same inventive concept as the automatic slag feeding system for a continuous casting machine crystallizer provided in the first aspect of the embodiment, this specification also provides an automatic slag feeding method for a continuous casting machine crystallizer. This method is applied to the automatic slag feeding system for a continuous casting machine crystallizer as described in the first aspect. See [link to documentation]. Figure 3 The method includes the following steps:

[0065] S301, after the liquid level in the crystallizer stabilizes, the actual thickness of the protective slag in the crystallizer is detected by the radioactive source crystallizer level detection device according to the set detection time sequence, and the average actual thickness is calculated by combining the actual thickness detected at each detection time with the actual thickness detected at the previous one or more detection times.

[0066] S302, the controller is used to compare in real time whether the difference between two adjacent average actual thicknesses is within a set threshold range, and the comparison result is obtained; the amount of slag fed is calculated based on the comparison result.

[0067] S303, the slag feeder is used to control the slag adjustment according to the slag feed amount.

[0068] Thirdly, based on the same inventive concept as the automatic slag addition method for the continuous casting machine crystallizer provided in the first aspect embodiment, this specification embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, contains the steps of the method described in the second aspect.

[0069] Fourthly, based on the same inventive concept as the automatic slag addition method for the continuous casting machine crystallizer provided in the first aspect embodiment, this specification embodiment also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method described in the second aspect.

[0070] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0071] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An automatic slag feeding system for a continuous casting machine crystallizer, characterized in that, The system includes: a radioactive source crystallizer level detection device, a controller, and a slag feeder; wherein... The radioactive source crystallizer level detection device is used to detect the actual thickness of the protective slag in the crystallizer according to a set detection time sequence after the liquid level in the crystallizer has stabilized, and to calculate the average actual thickness at each detection time by combining the actual thickness detected at the previous one or more detection times. The controller is connected to the material level detection device of the radioactive source crystallizer, and is used to compare in real time whether the difference between two adjacent average actual thickness values ​​is within a set threshold range and obtain the comparison result; the amount of slag to be fed is calculated based on the comparison result. A slag feeder is used to control the slag adjustment based on the slag input amount.

2. The automatic slag feeding system as described in claim 1, characterized in that, The system also includes: an electromagnetic induction crystallizer liquid level detection device and a stopper rod control device; The electromagnetic induction crystallizer liquid level detection device is connected to the controller and is used to detect the actual liquid level of the crystallizer by electromagnetic induction detection. The controller is used to calculate the stopper control value based on the actual liquid level; The stopper control device is connected to the controller and is used to control the stopper opening according to the stopper control value, so as to control the rise in the liquid level of the crystallizer.

3. The automatic slag feeding system as described in claim 1, characterized in that, The controller is also used to activate the radioactive source crystallizer level detection device when the protective slag in the crystallizer reaches the initial thickness under manual control, and to detect the initial thickness at the moment of activation.

4. The automatic slag feeding system as described in claim 1, characterized in that, The controller is also used for: judge The relationship between (k1, k2) and (i, t); where i represents the i-th detection time, and i ≥ 1, and i+1 represents the (i+1)-th detection time. This represents the average actual thickness at the i-th detection time. Let (k1, k2) represent the average actual thickness at the (i+1)th detection time, and (k1, k2) represent the set threshold range. like Initiate the protective slag reduction compensation and calculate the slag input amount according to the first compensation formula; the first compensation formula is: Q i+1 =Q i (1-x1%); where Q i+1 Q represents the amount of slag fed at the (i+1)th detection time. i x1% represents the amount of slag fed at the i-th detection time, and x1% represents the first slag adjustment ratio, which is a constant.

5. The automatic slag feeding system as described in claim 4, characterized in that, The controller is also used for: like Initiate the protective slag increment compensation and calculate the slag input amount according to the second compensation formula; the second compensation formula is: Q i+1 =Q i (1+x2%); where x2% represents the second slag adjustment ratio, which is a constant.

6. The automatic slag feeding system as described in claim 5, characterized in that, x2% = x1%.

7. The automatic slag feeding system as described in claim 4, characterized in that, The controller is also used for: like The amount of slag fed at the (i+1)th detection time remains unchanged, corresponding to the amount fed at the ith detection time.

8. An automatic slag feeding method for a continuous casting machine crystallizer, characterized in that, The method is applied to the automatic slag feeding system of the continuous casting machine crystallizer as described in any one of claims 1-7, and the method includes: After the liquid level in the crystallizer stabilizes, the actual thickness of the protective slag in the crystallizer is detected by the radioactive source crystallizer level detection device according to the set detection time sequence, and the average actual thickness is calculated by combining the actual thickness detected at each detection time with the actual thickness detected at the previous one or more detection times. The controller is used to compare in real time whether the difference between two adjacent average actual thickness values ​​is within a set threshold range, and the comparison result is obtained; the amount of slag to be fed is calculated based on the comparison result. The slag is adjusted using a slag feeder based on the slag input amount.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps of the method of claim 8.

10. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method of claim 8.

Images