A method for tracking the charging of a vessel for converter steelmaking

Abstract

The present application relates to a kind of converter steelmaking bin feeding tracking method, belong to steelmaking method technical field.The technical scheme of the present application is: acquisition bin discharge cumulative amount, weigh hopper real-time value and weigh hopper plug valve control motor's positive rotation contactor feedback signal and reverse contactor feedback signal, through logic judgment and numerical calculation, obtain the feeding type of material, feeding opportunity and the weight information of feeding amount.The beneficial effects of the present application are: in the production process of converter steelmaking, can be in more extensive equipment conditions and operating conditions, accurately to material addition information carries out real-time tracking, improves the informatization level of converter steelmaking, improves the accuracy of data acquisition, reduces the labor intensity of production line operator, provides data support for analyzing production and quality problem, and lays a foundation for subsequent realization of automatic steelmaking.

Description

Technical Field

[0001] This invention relates to a silo charging tracking method for converter steelmaking, belonging to the technical field of steelmaking methods. Background Technology

[0002] In converter steelmaking, the addition of auxiliary materials and alloys, including their sequence, timing, and weight, is crucial for process and endpoint control. Even with the same amount of material added, different addition processes can result in variations in the composition, temperature, and slag state at the converter's final stage. Therefore, real-time tracking and monitoring of the charging process is essential. Currently, some converter steelmaking processes suffer from low levels of information technology and insufficient equipment, failing to automate real-time tracking and recording of charging data. Instead, the total amount of material added per heat is manually recorded, preventing technical and management personnel from analyzing the charging process. Manually recording the total amount of material added per heat is labor-intensive and prone to errors; data loss is likely regardless of whether paper records or spreadsheets are used. Furthermore, automated tracking of charging data is fundamental for subsequent modeling; without accurate charging data, automated steelmaking is impossible.

[0003] Chinese patent application number CN202211050674.3 discloses "A method for tracking batch feeding of L2-level auxiliary materials in a converter", which provides a method for tracking batch feeding of L2-level auxiliary materials in a converter, and links the auxiliary material data added at each time point in the converter steelmaking process into logical production data for storage. This method is only applicable to the case where the slide valve is opened after the material preparation is completed, and all the prepared materials are added to the converter at one time. It is not applicable to the following situations: (1) After the material is prepared at one time, it is added to the converter in multiple times. In this case, all the materials will be included in the first feeding information, resulting in incorrect recording of the feeding weight and time. (2) When the electric vibration mechanism is used for continuous feeding during feeding, it is impossible to track the feeding data in real time. Summary of the Invention

[0004] The purpose of this invention is to provide a method for tracking the feeding of materials into a converter steelmaking silo. By collecting relevant information, performing logical judgments and numerical calculations, the method obtains information on the type, timing, and weight of materials being fed. In the converter steelmaking process, this method can accurately track material feeding information in real time under a wider range of equipment and operating conditions, improving the informatization level of converter steelmaking, increasing the accuracy of data collection, reducing the labor intensity of production line operators, providing data support for analyzing production and quality issues, laying the foundation for subsequent automated steelmaking, and effectively solving the aforementioned problems in the background technology.

[0005] The technical solution of this invention is: a method for tracking the feeding of materials into a converter steelmaking silo, comprising the following steps: (1) Collect the cumulative amount of material discharged from the silo and the real-time value of the weighing hopper; (2) Collect the feedback signals of the forward rotation contactor and the reverse rotation contactor of the control motor of the weighing hopper slide valve, and determine the state of the weighing hopper slide valve based on the collected signals; (3) Perform different operations based on the state of the weighing hopper slide valve obtained in step (2). If the state of the weighing hopper slide valve has not changed and is currently in the closed state, proceed to step (4); if the state of the weighing hopper slide valve has not changed and is currently in the open state, proceed to step (6); if the weighing hopper slide valve changes from open to closed, proceed to step (7). (4) Determine whether the silo is in a stockpiling state based on the changes in the cumulative amount of material discharged from the silo; (5) If the silo is in an unprepared state and the silo changes from a prepared state to an unprepared state, then the new batch feeding process of this silo is considered to have started. The real-time value of the weighing hopper obtained in step (1) is stored in the maximum and minimum values ​​of the new batch feeding process. If the silo is in a prepared state, the state is recorded. (6) Store the real-time value of the weighing hopper obtained in step (1) into the minimum value of the current batch feeding process of this silo; (7) If the minimum value of the current batch feeding process of this silo is greater than the real-time value of the weighing hopper, then the real-time value of the weighing hopper is saved to the minimum value of the current batch feeding process; (8) Subtract the minimum value from the maximum value of each batch to obtain the feeding weight of the corresponding batch; sum up the feeding weights of all batches to obtain the cumulative feeding value of this silo at the current moment; (9) Perform steps (1) to (8) for all silos to obtain the current cumulative material feeding value for the corresponding silos; (10) Repeat steps (1) to (9) at fixed intervals to obtain the current cumulative value of material feeding for all silos; (11) Based on the cumulative value of material feeding in the silo obtained in step (10), calculate the current cycle feeding value of the corresponding silo and store it in the feeding list; set the current system time as the feeding time and store it in the feeding list; obtain the material name according to the material type of the silo and store it in the feeding list.

[0006] In step (2), the method for determining the state of the weighing hopper gate valve based on the collected feedback signals from the forward and reverse contactors is as follows: if the feedback signal from the forward contactor is true or the feedback signal from the reverse contactor is true, the weighing hopper gate valve is in the open state; if the feedback signal from the reverse contactor changes from true to false, the weighing hopper gate valve is in the closed state; otherwise, the state of the weighing hopper gate valve remains unchanged.

[0007] In step (4), the method for determining whether the silo is in a preparation state based on the change in the cumulative amount of material discharged from the silo is as follows: if the change in the cumulative amount of material discharged from the silo exceeds the threshold, it is considered that the silo is in a preparation state, that is, the material in the silo is being discharged into the weighing hopper; the threshold here is the minimum value of material discharged from the silo at a fixed time interval, and the fixed time interval here is the same as the fixed time interval in step (10).

[0008] The process of feeding a batch refers to the time from when the material preparation of a silo is completed to when the next material preparation of the same silo begins.

[0009] In step (10), the time interval for each cycle is set according to actual needs, and can generally be set to 1 second.

[0010] In step (11), the method for calculating the feeding value of all silos by the cumulative feeding value of the silos is: the cumulative feeding value of the silos obtained in this cycle minus the cumulative feeding value of the silos obtained in the previous cycle. If the resulting feeding value is equal to 0, it means that the corresponding silos have not been fed in this cycle, and it is not necessary to store the feeding value, time and material name.

[0011] Set the correspondence between the silo number and the material name according to the actual material type in the silo. If the material type in the silo changes, maintain the correspondence between the silo number and the material name in a timely manner. In step (11), the material name is obtained according to this correspondence and stored in the feeding list.

[0012] In step (11), the obtained feeding list includes, but is not limited to, the type of material to be fed, the timing of feeding, and the amount of material to be fed.

[0013] The beneficial effects of this invention are as follows: by collecting relevant information, performing logical judgments and numerical calculations, the types, timing, and weight of materials added can be obtained. In the converter steelmaking process, the material addition information can be accurately tracked in real time under a wider range of equipment and operating conditions, which improves the informatization level of converter steelmaking, improves the accuracy of data collection, reduces the labor intensity of production line operators, provides data support for analyzing production and quality issues, and lays the foundation for the subsequent realization of automated steelmaking. Attached Figure Description

[0014] Figure 1 This is a flowchart of the method of the present invention; Figure 2 This is a structural block diagram of the silo feeding system of the present invention; In the diagram: 1. Bin 1, 2. Bin 2, 3. Bin 3, 4. Bin 4, 5. Bin 5, 6. Weighing hopper 1, 7. Weighing hopper 2, 8. Slide valve, 9. Converter. Detailed Implementation

[0015] To make the purpose, technical solutions, and advantages of the invention's embodiments clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only a small part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0016] A method for tracking the feeding of materials into a converter steelmaking silo includes the following steps: (1) Collect the cumulative amount of material discharged from the silo and the real-time value of the weighing hopper; (2) Collect the feedback signals of the forward rotation contactor and the reverse rotation contactor of the control motor of the weighing hopper slide valve, and determine the state of the weighing hopper slide valve based on the collected signals; (3) Perform different operations based on the state of the weighing hopper slide valve obtained in step (2). If the state of the weighing hopper slide valve has not changed and is currently in the closed state, proceed to step (4); if the state of the weighing hopper slide valve has not changed and is currently in the open state, proceed to step (6); if the weighing hopper slide valve changes from open to closed, proceed to step (7). (4) Determine whether the silo is in a stockpiling state based on the changes in the cumulative amount of material discharged from the silo; (5) If the silo is in an unprepared state and the silo changes from a prepared state to an unprepared state, then the new batch feeding process of this silo is considered to have started. The real-time value of the weighing hopper obtained in step (1) is stored in the maximum and minimum values ​​of the new batch feeding process. If the silo is in a prepared state, the state is recorded. (6) Store the real-time value of the weighing hopper obtained in step (1) into the minimum value of the current batch feeding process of this silo; (7) If the minimum value of the current batch feeding process of this silo is greater than the real-time value of the weighing hopper, then the real-time value of the weighing hopper is saved to the minimum value of the current batch feeding process; (8) Subtract the minimum value from the maximum value of each batch to obtain the feeding weight of the corresponding batch; sum up the feeding weights of all batches to obtain the cumulative feeding value of this silo at the current moment; (9) Perform steps (1) to (8) for all silos to obtain the current cumulative material feeding value for the corresponding silos; (10) Repeat steps (1) to (9) at fixed intervals to obtain the current cumulative value of material feeding for all silos; (11) Based on the cumulative value of material feeding in the silo obtained in step (10), calculate the current cycle feeding value of the corresponding silo and store it in the feeding list; set the current system time as the feeding time and store it in the feeding list; obtain the material name according to the material type of the silo and store it in the feeding list.

[0017] In step (2), the method for determining the state of the weighing hopper gate valve based on the collected feedback signals from the forward and reverse contactors is as follows: if the feedback signal from the forward contactor is true or the feedback signal from the reverse contactor is true, the weighing hopper gate valve is in the open state; if the feedback signal from the reverse contactor changes from true to false, the weighing hopper gate valve is in the closed state; otherwise, the state of the weighing hopper gate valve remains unchanged.

[0018] In step (4), the method for determining whether the silo is in a preparation state based on the change in the cumulative amount of material discharged from the silo is as follows: if the change in the cumulative amount of material discharged from the silo exceeds the threshold, it is considered that the silo is in a preparation state, that is, the material in the silo is being discharged into the weighing hopper; the threshold here is the minimum value of material discharged from the silo at a fixed time interval, and the fixed time interval here is the same as the fixed time interval in step (10).

[0019] The process of feeding a batch refers to the time from when the material preparation of a silo is completed to when the next material preparation of the same silo begins.

[0020] In step (10), the time interval for each cycle is set according to actual needs, and can generally be set to 1 second.

[0021] In step (11), the method for calculating the feeding value of all silos by the cumulative feeding value of the silos is: the cumulative feeding value of the silos obtained in this cycle minus the cumulative feeding value of the silos obtained in the previous cycle. If the resulting feeding value is equal to 0, it means that the corresponding silos have not been fed in this cycle, and it is not necessary to store the feeding value, time and material name.

[0022] Set the correspondence between the silo number and the material name according to the actual material type in the silo. If the material type in the silo changes, maintain the correspondence between the silo number and the material name in a timely manner. In step (11), the material name is obtained according to this correspondence and stored in the feeding list.

[0023] In step (11), the obtained feeding list includes, but is not limited to, the type of material to be fed, the timing of feeding, and the amount of material to be fed.

[0024] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for tracking the feeding of materials into a converter steelmaking silo, characterized in that... Includes the following steps: (1) Collect the cumulative amount of material discharged from the silo and the real-time value of the weighing hopper; (2) Collect the feedback signals of the forward rotation contactor and the reverse rotation contactor of the control motor of the weighing hopper slide valve, and determine the state of the weighing hopper slide valve based on the collected signals; (3) Perform different operations based on the state of the weighing hopper slide valve obtained in step (2). If the state of the weighing hopper slide valve has not changed and is currently in the closed state, proceed to step (4); if the state of the weighing hopper slide valve has not changed and is currently in the open state, proceed to step (6); if the weighing hopper slide valve changes from open to closed, proceed to step (7). (4) Determine whether the silo is in a stockpiling state based on the changes in the cumulative amount of material discharged from the silo; (5) If the silo is in an unprepared state and the silo changes from a prepared state to an unprepared state, then the new batch feeding process of this silo is considered to have started, and the real-time value of the weighing hopper obtained in step (1) is stored in the maximum and minimum values ​​of the new batch feeding process. If the silo is in a ready-to-use state, record the status; (6) Store the real-time value of the weighing hopper obtained in step (1) into the minimum value of the current batch feeding process of this silo; (7) If the minimum value of the current batch feeding process of this silo is greater than the real-time value of the weighing hopper, then the real-time value of the weighing hopper is saved to the minimum value of the current batch feeding process; (8) Subtract the minimum value from the maximum value of each batch to obtain the feeding weight of the corresponding batch; sum up the feeding weights of all batches to obtain the cumulative feeding value of this silo at the current moment; (9) Perform steps (1) to (8) for all silos to obtain the current cumulative material feeding value for the corresponding silos; (10) Repeat steps (1) to (9) at fixed intervals to obtain the current cumulative value of material feeding for all silos; (11) Based on the cumulative value of material feeding in the silo obtained in step (10), calculate the current cycle feeding value of the corresponding silo and store it in the feeding list; set the current system time as the feeding time and store it in the feeding list; obtain the material name according to the material type of the silo and store it in the feeding list.

2. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: In step (2), the method for determining the state of the weighing hopper gate valve based on the collected feedback signals from the forward and reverse contactors is as follows: if the feedback signal from the forward contactor is true or the feedback signal from the reverse contactor is true, the weighing hopper gate valve is in the open state; if the feedback signal from the reverse contactor changes from true to false, the weighing hopper gate valve is in the closed state; otherwise, the state of the weighing hopper gate valve remains unchanged.

3. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: In step (4), the method for determining whether the silo is in a preparation state based on the change in the cumulative amount of material discharged from the silo is as follows: if the change in the cumulative amount of material discharged from the silo exceeds the threshold, it is considered that the silo is in a preparation state, that is, the material in the silo is being discharged into the weighing hopper; the threshold here is the minimum value of material discharged from the silo at a fixed time interval, and the fixed time interval here is the same as the fixed time interval in step (10).

4. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: The process of feeding a batch refers to the time from when the material preparation of a silo is completed to when the next material preparation of the same silo begins.

5. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: In step (10), the time interval for each cycle is set according to actual needs, and can generally be set to 1 second.

6. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: In step (11), the method for calculating the feeding value of all silos by the cumulative feeding value of the silos is: the cumulative feeding value of the silos obtained in this cycle minus the cumulative feeding value of the silos obtained in the previous cycle. If the resulting feeding value is equal to 0, it means that the corresponding silos have not been fed in this cycle, and it is not necessary to store the feeding value, time and material name.

7. The method for tracking the feeding of materials into a converter steelmaking silo according to claim 1, characterized in that: Set the correspondence between the silo number and the material name according to the actual material type in the silo. If the material type in the silo changes, maintain the correspondence between the silo number and the material name in a timely manner. In step (11), the material name is obtained according to this correspondence and stored in the feeding list.

8. The method for tracking the feeding of materials in a converter steelmaking silo according to claim 1, characterized in that: In step (11), the obtained feeding list includes, but is not limited to, the type of material to be fed, the timing of feeding, and the amount of material to be fed.

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