Intelligent control system for dedusting air volume of blast furnace casting house

Abstract

According to the intelligent control system for the dust removal air volume of the blast furnace casting house, dynamic intelligent control over the dust removal air volume of the blast furnace casting house is achieved by introducing the intelligent camera and the edge intelligent controller. The system comprises a blast furnace, an iron notch sealing cover, a dust remover, an induced draft fan and an intelligent camera. The intelligent camera monitors the operation scene of the blast furnace, identifies the actions of opening, plugging, oxygen blowing, slag removal and the like, and sends a signal to the edge intelligent controller through image analysis, so that the frequency of the dust removal valve and the induced draft fan is automatically adjusted. The system adjusts the air volume according to the real-time operation condition, energy waste caused by manual operation delay and inaccuracy is effectively avoided, and the energy utilization efficiency is improved. In addition, the intelligent camera is also responsible for monitoring the condition of a worker, ensuring safe operation, avoiding unnecessary air volume, further optimizing the energy efficiency of the dust removal system and improving the environmental protection effect. By introducing the system, the dust removal effect of the blast furnace casting house is effectively improved, the operation safety is ensured, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the field of dust removal control, and particularly to an intelligent control system for the dust removal air volume in the blast furnace tapping yard. Background Art

[0002] The blast furnace tapping process is an important link in iron and steel smelting. The operation of the tapping hole involves the control and management of molten iron in the blast furnace. The traditional blast furnace tapping system needs to manually operate valves to adjust the opening and closing states of each tapping hole, iron runner, swing nozzle, and ladle position. Although this operating system effectively completes the tapping task of the blast furnace, many problems have also emerged in actual operation, especially in terms of smoke and dust emissions and energy efficiency.

[0003] During the blast furnace tapping process, the amount of smoke and dust generated in different stages is different. For example, different operations such as opening, plugging, and slag cleaning will cause fluctuations in the amount of smoke and dust. Under the current technical conditions, the adjustment of the dust removal system still relies on manual operation. When molten iron is tapped at a certain tapping hole, the relevant dust removal valves are manually opened; after the tapping hole stops tapping molten iron, the operator needs to close the valves within a certain period of time. However, due to the delay and inaccuracy of manual operation, in many cases, the opening and closing of the valves are not adjusted in a timely manner, resulting in the generation of ineffective air volume, wasting electric energy, and increasing the energy consumption of the equipment.

[0004] In addition, since different amounts of flue gas are generated at different times during the blast furnace tapping process, if the operating frequency of the dust removal induced draft fan is not adjusted accordingly, when the amount of smoke and dust is small, the frequency of the fan remains too high, which will instead inhale the surrounding air, further resulting in the waste of ineffective air volume. During the tapping operation, some unforeseen operations, such as oxygen blowing for slag cleaning, will also generate a large amount of flue gas in a short period of time. If the frequency of the induced draft fan is not increased in a timely manner, it will cause smoke and dust to overflow, seriously affecting the working environment.

[0005] The existing blast furnace tapping yard dust removal systems generally have the following technical problems: Large amount of ineffective dust removal air volume: Since the opening and closing of the valves are not dynamically adjusted according to the amount of smoke and dust generated, when the amount of smoke and dust is small, the fan still maintains a high frequency, inhaling a large amount of ineffective air and wasting electric energy.

[0006] Less adjustment of the operating frequency of the induced draft fan: The frequency of the induced draft fan fails to be adjusted in real time according to actual needs, resulting in unnecessary power consumption.

[0007] Delay in manual operation: Due to manual operation, the opening and closing of the dust removal valves cannot respond to the changes in molten iron in real time, resulting in untimely opening and closing of the valves, increasing the ineffective air volume and energy consumption. Summary of the Invention

[0008] The object of the present invention is to solve the disadvantages existing in the prior art, and a kind of intelligent control system for the dust removal air volume of the blast furnace tapping yard is proposed.

[0009] To achieve the above object, the present invention adopts the following technical solutions. An intelligent control system for the dust removal air volume of the blast furnace tapping yard includes a blast furnace, a taphole sealing cover arranged at the lower half of the blast furnace, a dust collector, a dust removal induced draft fan and an edge intelligent controller; in the taphole sealing cover, a clay gun machine, an opening machine and an intelligent camera are symmetrically arranged along the blast furnace; a dust removal pipeline is also arranged in the system; the taphole sealing cover and the dust collector are connected by the dust removal pipeline; an electric / pneumatic regulating valve is arranged on each dust removal pipeline connected to the dust collector; the bottom of the blast furnace is symmetrically provided with a molten iron gutter; a swinging spout is also arranged at the end of the molten iron gutter; two outlets are arranged at the bottom of each swinging spout, and a molten iron ladle is arranged at each outlet; an electric / pneumatic on-off valve is also arranged on each swinging spout; the electric / pneumatic on-off valve is connected to the dust collector through the dust removal pipeline; the electric / pneumatic on-off valve, the electric / pneumatic regulating valve and the intelligent camera are all connected through network signals; tapholes are also arranged on both sides of the bottom of the blast furnace.

[0010] Preferably, the specific steps of the system are as follows: S1: The intelligent camera captures the monitoring scene at the opening machine and sends a signal; the actions of the monitoring scene captured by the intelligent camera are identified through image recognition and analyzed, and the types of the analyzed actions are determined. S2: The edge intelligent controller adjusts the valves according to the action types in step S1; and detects whether there are workers around through the intelligent camera. S3: Dynamically calculate the total air volume and adjust the frequency of the induced draft fan. S3: The system circulates for monitoring.

[0011] Preferably, in step S1, the intelligent camera monitors the working states of the opening machine and the clay gun machine in the taphole sealing cover. When the opening machine opens the taphole, the intelligent camera captures the opening action, and through algorithm operation, sends an opening signal to the edge intelligent controller. When the clay gun machine plugs the taphole at the taphole, the intelligent camera captures the plugging action, and through algorithm operation, sends a plugging signal to the edge intelligent controller.

[0012] Preferably, in step S2, the intelligent camera in the taphole sealing cover is also responsible for monitoring whether there are people working in the taphole sealing cover after the taphole is plugged. When the intelligent camera captures a signal that there are people working in the taphole sealing cover, the opening degree of the electric / pneumatic on-off valve after the taphole is plugged is maintained. When the intelligent camera captures the signal that there is no one working inside the tuyere sealing cover, the electric / pneumatic switch valve is closed.

[0013] Preferably, in step S2, an oxygen pipeline is further provided on the swinging nozzle for oxygen blowing and slag cleaning; an oxygen flow switch and an oxygen valve are additionally provided on the oxygen pipeline; when the operator opens the oxygen valve for oxygen blowing and slag cleaning, the oxygen flow switch generates a flow signal.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By introducing an intelligent camera and an edge intelligent controller, the present invention can realize dynamic and intelligent control of the dust removal air volume in the blast furnace tapping yard. The system automatically adjusts the dust removal valve and the frequency of the induced draft fan according to the real-time situation of the hot metal operation (such as opening the taphole, stopping the taphole, oxygen blowing and slag cleaning, etc.), effectively avoiding the waste of ineffective air volume caused by the delay and inaccuracy of manual operation, significantly improving the energy utilization efficiency, and reducing the waste of electric energy. At the same time, by monitoring the working conditions of the staff inside the tuyere sealing cover in real time with the intelligent camera, unnecessary air volume generation is avoided, further optimizing the energy efficiency of the dust removal system, and improving the operation safety and environmental protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the working logic diagram of the system of the present invention; Figure 2 It is the dust removal system diagram of the blast furnace tapping yard of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] For a further understanding of the purpose, structure, features and functions of the present invention, the following is a detailed description in conjunction with the embodiments.

[0017] Please refer to Figure 1, the present invention provides an intelligent control system for the dust removal air volume in the blast furnace tapping yard, including a blast furnace 1, a taphole sealing cover 2 arranged in the lower half of the blast furnace 1, a dust collector 3, a dust removal induced draft fan 4, and an edge intelligent controller 5; a clay gun machine 6, an opening machine 7, and an intelligent camera 8 are symmetrically arranged in the taphole sealing cover 2 along the blast furnace 1; a dust removal pipeline 9 is also arranged in the system; the taphole sealing cover 2 is connected to the dust collector 3 through the dust removal pipeline 9; an electric / pneumatic regulating valve 10 is arranged on each dust removal pipeline 9 connected to the dust collector 3; a molten iron trough 11 is symmetrically arranged at the bottom of the blast furnace 1; a swinging spout 12 is further arranged at the end of the molten iron trough 11; two outlets are arranged at the bottom of each swinging spout 12, and a molten iron ladle 13 is arranged at each outlet; an electric / pneumatic on-off valve 14 is also arranged on each swinging spout 12; the electric / pneumatic on-off valve 14 is connected to the dust collector 3 through the dust removal pipeline 9; the electric / pneumatic on-off valve 14, the electric / pneumatic regulating valve 10, and both are connected to the intelligent camera 8 through network signals; tapping holes 15 are also arranged on both sides of the bottom of the blast furnace 1.

[0018] The system ensures the effective capture and treatment of the soot during the blast furnace tapping process and reduces air pollution through the dust collector 3, the dust removal induced draft fan 4, the dust removal pipeline 9, and the edge intelligent controller 5 arranged in the taphole sealing cover 2. The electric / pneumatic regulating valve 10 arranged on the dust removal pipeline can accurately control the air volume of each dust removal pipeline, avoid the adverse effects of too much or too little air volume on the dust removal effect, and keep the system running efficiently and stably.

[0019] The intelligent camera 8 and the edge intelligent controller 5 in the system provide real-time visual monitoring and data acquisition functions. The intelligent camera 8 can monitor the blast furnace tapping process in real time and detect abnormal situations in a timely manner. The intelligent camera 8 is connected to the electric / pneumatic regulating valve 10 and the electric / pneumatic on-off valve 14 through network signals, which can realize remote control and real-time data feedback, further optimizing the operation efficiency and energy-saving effect. Through intelligent algorithms, the dust removal air volume can be automatically adjusted according to different working conditions, avoiding manual intervention and improving the automation level of the system.

[0020] The molten iron trough 11 and the swinging spout 12 are arranged at the bottom of the blast furnace, and a molten iron ladle 13 and an on-off valve 14 are configured at the bottom of each spout. Such a design not only ensures the smooth flow and effective distribution of the molten iron, but also can accurately control the discharge situation of each molten iron flow. The combination of the swinging spout 12 and the electric / pneumatic regulating valve 10 makes the molten iron flow rate and distribution more flexible, and through the linkage with the dust removal system, it can ensure that the dust removal system works synchronously every time the molten iron flows back, thus ensuring the dust removal effect in the blast furnace area.

[0021] The efficient cooperation between the tuyere sealing cover 2 and the dust removal equipment helps to reduce the possible leakage of smoke or dust during the tapping process of the blast furnace, avoiding threats to the health of operators and reducing the pollution risk to the external environment. Through intelligent control, the system can monitor abnormal situations (such as excessive or insufficient air volume) in real time and make rapid adjustments, ensuring the high efficiency of the dust removal equipment and the safety of the blast furnace tapping process.

[0022] The intelligent control of the electric / pneumatic regulating valve 10 and the electric / pneumatic on-off valve 14 enables the air volume and air flow of the system to be dynamically adjusted according to actual needs, avoiding energy waste. This on-demand adjustment can effectively reduce power and gas consumption, thus achieving the purpose of energy conservation.

[0023] Through intelligent devices and automatic control, the system greatly reduces the need for manual intervention. Staff can understand the operating status of the equipment in real time through the control panel or remote monitoring system and make remote adjustments as needed. The intelligent control system can automatically adjust the dust removal air volume according to the data fed back by the camera, reducing the frequency of manual inspections and manual adjustments, and improving the efficiency of the production line.

[0024] Each component within the system (such as regulating valves, on-off valves, dust collectors, etc.) can perform intelligent monitoring and fault diagnosis. Operators can identify in advance the equipment or components that need maintenance, avoiding the impact of sudden failures on the production process. The regular automatic detection and warning system makes the maintenance of the equipment more efficient and accurate, extends the service life of the equipment, and reduces the maintenance cost.

[0025] Through the coordinated operation of the dust removal pipeline 8 and the electric / pneumatic regulating valve 11, the system can adjust the dust removal air volume according to the specific working conditions during the tapping of the blast furnace (such as molten iron flow rate, dust concentration, etc.), achieving precise control and ensuring the best dust removal effect during each tapping process, reducing unnecessary energy waste.

[0026] Preferably, the specific steps of the system are as follows: S1: The intelligent camera 8 captures the monitoring scene at the drill jumbo 7 and sends a signal; the actions in the monitoring scene captured by the intelligent camera 8 are identified through image recognition and analyzed, and the types of the analyzed actions are determined; The intelligent camera 8 monitors the working status of the drill jumbo 7 and the clay gun machine 6 inside the tuyere sealing cover 2; When the drill jumbo 7 opens the tuyere, the intelligent camera 8 captures the opening action. Through algorithm operation, an opening signal is sent to the edge intelligent controller 5; the edge intelligent controller 5 then sends a valve opening signal to the electric / pneumatic regulating valve 10 at the tuyere, and the tuyere dust suction valve opens, sucking the dust generated during the tapping process of the molten iron into the dust collector 3.

[0027] When the clay gun 6 performs the plugging operation at the iron notch 15, the intelligent camera 8 captures the plugging operation, and through algorithmic operations, sends a plugging signal to the edge intelligent controller 5; the edge intelligent controller 5 then sends a valve closing signal to the electric / pneumatic regulating valve 10 at the iron notch, and the iron notch dust suction valve needs to reduce the opening signal.

[0028] An improved YOLOv8 architecture is adopted, and the recognition models of the drill pipe of the taphole machine and the nozzle of the clay gun are trained through transfer learning, and the detection accuracy reaches 98.5%. At the same time, an LSTM+3D CNN two-stream network is deployed, and the displacement trajectory of the equipment is analyzed through 10 consecutive frames of images, so as to improve the response ability of the system to dynamic changes. This combination not only improves the accuracy of detection, but also enhances the adaptability to complex operating environments.

[0029] S2: The edge intelligent controller 5 adjusts the valve according to the action type in step S1; and detects whether there are workers around through the intelligent camera 8. The intelligent camera 8 inside the iron notch sealing cover 2 is also responsible for monitoring whether there are people working inside the iron notch sealing cover 2 after the iron notch 15 is plugged. When the intelligent camera 8 captures the signal that there are people working inside the iron notch sealing cover 2, the opening of the electric / pneumatic switch valve 14 after the iron notch 15 is plugged is maintained. When the intelligent camera 8 captures the signal that there are no people working inside the iron notch sealing cover 2, the electric / pneumatic switch valve 14 is closed.

[0030] An oxygen pipeline 16 is also provided on the swinging nozzle 12 for oxygen blowing and slag cleaning; an oxygen flow switch 17 and an oxygen valve 18 are added to the oxygen pipeline 16; when the operator needs to blow oxygen and clean slag and opens the oxygen valve 18, the oxygen flow switch 17 generates a flow signal.

[0031] By monitoring the working state inside the iron notch sealing cover 2 through the intelligent camera 8, it is possible to identify in real time whether there are operators working inside the iron notch sealing cover 2. When the camera 8 detects the signal that there are no people working inside the iron notch sealing cover, the electric / pneumatic switch valve 14 is automatically closed to prevent accidental leakage of molten iron or pressure relief, thus greatly improving the operation safety.

[0032] The automatic control function of the intelligent camera 8 ensures the precise control of the valve, avoiding potential safety hazards caused by human negligence or incorrect operations, such as the valve not being closed or opened in time, resulting in risks such as overflow and explosion.

[0033] After the intelligent camera 8 captures the working signal inside the iron notch sealing cover 2, the system can automatically adjust the opening of the electric / pneumatic switch valve 14 to ensure an appropriate plugging state of the iron notch during operation, avoiding production interruption or efficiency decline caused by improper valve position.

[0034] When there is no manual operation, the intelligent camera automatically closes the switch valve 14, reducing the need for manual intervention and improving the automation level of the entire production process. This not only saves labor costs but also enhances the production stability.

[0035] The oxygen pipeline 16 works in conjunction with the oxygen flow switch 17 and the oxygen valve 18. When the operator needs to blow oxygen for slag cleaning, by opening the oxygen valve 18, the oxygen flow switch 17 will generate a flow signal to ensure that the oxygen flow matches the demand. This precise control can effectively improve the efficiency of blowing oxygen for slag cleaning and avoid unnecessary oxygen waste.

[0036] Through the collaborative work of intelligent devices, the entire production process can be more efficient and orderly, reducing the frequency of manual adjustment, increasing the system response speed, and thus enhancing the production efficiency.

[0037] The automatic control system of the intelligent camera avoids manual operation errors. Especially when there is no worker operation, it timely closes the electric / pneumatic switch valve 14 to avoid energy waste.

[0038] The function of the oxygen flow switch 17 is to adjust the oxygen flow according to the actual demand, avoiding excessive or insufficient oxygen supply, and ensuring more energy-efficient and efficient use of oxygen.

[0039] Reduce manual intervention: The entire system significantly reduces the dependence on operators through automatic control. Operators only need to operate under necessary circumstances, and the overall system runs more intelligently and efficiently.

[0040] Through the real-time monitoring of sensing devices such as intelligent cameras and flow switches, operators can more conveniently obtain on-site information and make timely decisions, enhancing the convenience and accuracy of work.

[0041] S3: Dynamically calculate the total air volume and adjust the frequency of the induced draft fan; The edge controller 5 calculates the current total air volume of the dust removal system based on the number of valves opened and the valve opening degree in the dust removal system, and adjusts the operating frequency of the dust removal induced draft fan according to the "corresponding relationship between the dust removal air volume and the operating frequency of the dust removal induced draft fan" to achieve the purpose of precise control of the operating frequency of the induced draft fan.

[0042] By precisely controlling the operating frequency of the induced draft fan, it can ensure that the air volume of the induced draft fan always matches the actual demand of the dust removal system. When the dust removal demand of the system is low, the frequency of the induced draft fan decreases, reducing unnecessary power consumption and thus achieving energy conservation. On the contrary, when the demand increases, the frequency of the induced draft fan increases to ensure the system performance and efficiency.

[0043] Precisely controlling the air volume and the frequency of the induced draft fan helps the induced draft fan operate in the best operating state, avoiding overloading or underloading conditions, reducing the operating pressure and wear of the equipment. In the long run, it can extend the service life of the equipment and reduce the maintenance frequency and cost.

[0044] The precise matching between the air volume and the frequency of the induced draft fan can ensure the stability of the pressure and air flow inside the system, thus improving the operating stability of the entire dust removal system. This is crucial for the sustainability and reliability of the dust removal effect, helping to maintain the dust removal efficiency and prevent the reduction of the dust removal effect caused by unstable air flow.

[0045] S4: The system monitors cyclically.

[0046] The present invention has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and refinements made without departing from the spirit and scope of the present invention fall within the scope of the patent protection of the present invention.

Claims

1. An intelligent control system for the dust removal air volume in the blast furnace tapping yard, characterized in that: It includes a blast furnace (1), a taphole sealing cover (2) arranged in the lower part of the blast furnace (1), a dust collector (3), a dust extraction fan (4), and an edge intelligent controller (5); inside the taphole sealing cover (2), a mud gun machine (6), a taphole drill (7), and an intelligent camera (8) are symmetrically arranged along the blast furnace (1); a dust extraction pipeline (9) is also provided in the system; the taphole sealing cover (2) and the dust collector (3) are connected by the dust extraction pipeline (9); an electric / pneumatic regulating valve (10) is provided on each dust extraction pipeline (9) connected to the dust collector (3); iron launders (11) are symmetrically arranged on the bottom of the blast furnace (1); a swinging spout (12) is further provided at the end of the iron launder (11); two outlets are provided at the bottom of each swinging spout (12), and a molten iron ladle (13) is provided at each outlet; an electric / pneumatic on-off valve (14) is also provided on each swinging spout (12); the electric / pneumatic on-off valve (14) is connected to the dust collector (3) through the dust extraction pipeline (9); the electric / pneumatic on-off valve (14) is connected to the electric / pneumatic regulating valve (10) and both are connected to the intelligent camera (8) through network signals; tapholes (15) are also provided on both sides of the bottom of the blast furnace (1).

2. The intelligent control system for the dust removal air volume in the blast furnace tapping yard according to claim 1, characterized in that: The specific steps of the system are as follows: S1: The intelligent camera (8) captures the monitoring scene at the taphole drill (7) and sends a signal; the actions in the monitoring scene captured by the intelligent camera (8) are recognized through image and analyzed, and the types of the analyzed actions are determined; S2: The edge intelligent controller (5) adjusts the valves according to the action types in step S1; and detects whether there are workers around through the intelligent camera (8); S3: Dynamically calculate the total air volume and adjust the frequency of the induced draft fan; S3: The system circulates for monitoring.

3. The intelligent control system for the dust removal air volume in the blast furnace tapping yard according to claim 2, characterized in that: In step S1, the intelligent camera (8) monitors the working states of the taphole drill (7) and the mud gun machine (6) inside the taphole sealing cover (2); When the taphole drill (7) opens the taphole (15), the intelligent camera (8) captures the opening action, and through algorithm operation, sends an opening signal to the edge intelligent controller (5); When the mud gun machine (6) plugs the taphole (15), the intelligent camera (8) captures the plugging action, and through algorithm operation, sends a plugging signal to the edge intelligent controller (5).

4. The intelligent control system for the dust removal air volume in the blast furnace tapping yard according to claim 1, wherein: In step S2, the intelligent camera (8) inside the taphole sealing cover (2) is also responsible for monitoring whether there are people working inside the taphole sealing cover (2) after the taphole (15) is plugged; When the intelligent camera (8) captures a signal that there are people working inside the taphole sealing cover (2), the opening degree of the electric / pneumatic on-off valve (14) after the taphole (15) is plugged is maintained; When the intelligent camera (8) captures a signal that there are no people working inside the taphole sealing cover (2), the electric / pneumatic on-off valve (14) is closed.

5. The intelligent control system for the dust removal air volume in the blast furnace tapping yard according to claim 1, characterized in that: In the step S2, an oxygen pipeline (16) is further provided on the oxygen-blowing slag cleaning swing nozzle (12); an oxygen flow switch (17) and an oxygen valve (18) are additionally arranged on the oxygen pipeline (16); when an operator needs to perform oxygen-blowing slag cleaning and opens the oxygen valve (18), the oxygen flow switch (17) generates a flow signal.

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