Intelligent control method for continuous casting secondary cooling nozzle and related equipment

Abstract

The invention discloses an intelligent control method for a continuous casting secondary cooling nozzle and related equipment, and relates to the technical field of steelmaking continuous casting, the method comprises the steps that working modes of a continuous casting machine are obtained, and the working modes comprise a casting stopping mode, a production preparation mode and a casting preparation mode; and based on the working mode, the opening time, the closing time and the pressure of a secondary cooling water valve and a secondary cooling compressed air valve of each secondary cooling subarea are automatically controlled, so that the working state of a secondary cooling nozzle is optimized.

Description

Technical Field

[0001] The present application relates to the technical field of steelmaking and continuous casting, and in particular to an intelligent control method and related equipment for a continuous casting secondary cooling nozzle. Background Art

[0002] During the production process of the continuous casting machine, the secondary cooling nozzle controls the cooling rate of the ingot by spraying cooling water and compressed air to ensure the surface quality and internal structure stability of the ingot. However, after long-term use, the secondary cooling nozzle is prone to blockage, pore blockage and backflow, uneven cooling effect and other problems. Scale and impurities accumulate at the nozzle outlet, affecting the normal spraying of the nozzle, and the secondary cooling water refluxes into the air pipeline, resulting in unstable water discharge from the nozzle. In addition, as the equipment ages, the differences between cooling zones make it difficult to maintain uniform cooling effect, affecting the quality of the ingot.

[0003] At present, the maintenance of secondary cooling nozzles mainly relies on manual inspection, and it is impossible to monitor and clean the nozzles in real time, especially during the pouring stop period, the nozzles cannot be effectively cleaned. The traditional manual control method is also unable to flexibly adjust the working state of the nozzle according to actual production needs. How to achieve automatic and intelligent adjustment in different production stages to prevent nozzle blockage and maintain the cooling effect has become a technical problem that needs to be solved urgently. Therefore, an intelligent control method for continuous casting secondary cooling nozzles is urgently needed. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect, the present application provides an intelligent control method for a continuous casting secondary cooling nozzle, comprising:

[0006] Obtaining a working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode, and a pouring preparation mode;

[0007] Based on the above working mode, the opening time, closing time and pressure of the secondary cooling water valve and secondary cooling compressed air valve of each secondary cooling zone are automatically controlled to optimize the working state of the secondary cooling nozzle.

[0008] In one possible implementation,

[0009] The above-mentioned pouring stop mode is the tail billet mode, and the tail billet is pulled out of the fan-shaped segment;

[0010] The above production preparation mode is an upper ingot rod mode for pulling the ingot.

[0011] In a feasible implementation, it also includes:

[0012] When the current working mode is the above-mentioned watering stop mode, the above-mentioned secondary cooling water valve is controlled to be closed; the above-mentioned secondary cooling compressed air valve is controlled to remain in an open state, and the pressure of the above-mentioned secondary cooling compressed air valve is controlled to be a preset pressure, and after continuing for a preset time, the above-mentioned secondary cooling compressed air valve is controlled to be closed.

[0013] In a feasible implementation, it also includes:

[0014] When the current working mode is the upper ingot rod mode, the secondary cooling compressed air valve is controlled to be opened, and the pressure of the secondary cooling compressed air valve is controlled to be a preset pressure, until the current working mode is changed to the preparation for pouring mode, and the secondary cooling compressed air valve is controlled to be closed.

[0015] In a feasible implementation manner, the preset time is greater than or equal to 10 minutes.

[0016] In a feasible implementation manner, the preset pressure is less than or equal to 3.0 Bar.

[0017] In a feasible implementation, it also includes:

[0018] When the current working mode is the above-mentioned pouring stop mode, when it is detected that the tail billet reaches the preset position, the pressure of the above-mentioned secondary cooling compressed air valve is automatically adjusted.

[0019] In the second aspect, the present application proposes an intelligent control device for a continuous casting secondary cooling nozzle, comprising:

[0020] A mode recognition unit, used for acquiring the working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode and a preparation pouring mode;

[0021] The operation execution unit is used to automatically control the opening time, closing time and pressure of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling zone based on the working mode to optimize the working state of the secondary cooling nozzle.

[0022] In a third aspect, an electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement the steps of the intelligent control method for the continuous casting secondary cooling nozzle of any one of the first aspects when executing the computer program stored in the memory.

[0023] In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the intelligent control method for the continuous casting secondary cooling nozzle of any one of the first aspects is implemented.

[0024] In summary, the embodiment of the present application automatically identifies different working modes of the continuous casting machine (such as pouring stop mode, production preparation mode, etc.) through programmed control, and adjusts the opening time, closing time and pressure of the secondary cooling water valve and the compressed air valve according to actual needs, so as to realize the working state of the intelligent control nozzle and avoid the limitations and errors caused by manual operation. Secondly, the present invention effectively prevents nozzle blockage, and by delaying the closing of the secondary cooling compressed air, ensures that the residual water in the nozzle during the stop phase is completely blown out, avoids scale accumulation, and reduces the risk of pore blockage. In the production preparation stage, the nozzle is further kept clean by accurately controlling the switching timing of the compressed air to prevent impurities from clogging the pores. In addition, the present invention can improve the uniformity of the cooling of the billet, automatically adjust the working state of each secondary cooling zone nozzle, cool at a suitable pressure and flow rate, avoid surface temperature fluctuations caused by uneven cooling, and ensure the improvement of the surface quality and internal quality of the billet. The working efficiency of the nozzle is also optimized, and the cooling and spraying effects are effectively controlled, avoiding billet defects caused by uneven cooling, such as segregation, bulging, etc. By precisely controlling the use of secondary cooling water and compressed air, energy waste is avoided, production costs are saved, and production economy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic flow chart of an intelligent control method for a continuous casting secondary cooling nozzle provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of an intelligent control device for a continuous casting secondary cooling nozzle provided in an embodiment of the present application;

[0028] Figure 3 Schematic diagram of the structure of the intelligent control device of the continuous casting secondary cooling nozzle provided in the embodiment of the present application. DETAILED DESCRIPTION

[0029] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] See also Figure 1 , which is a flow chart of an intelligent control method for a continuous casting secondary cooling nozzle provided in an embodiment of the present application, which may specifically include:

[0031] S110, obtaining a working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode, and a pouring preparation mode;

[0032] For example, in the continuous casting production process, the working mode of the continuous casting machine is a description of the control method of different production stages. The working mode of each stage determines the working parameters of the secondary cooling nozzle, secondary cooling water and compressed air. Different working modes require automatic adjustment of the working state of the nozzle according to specific production needs, including the nozzle pressure, spraying water volume, opening and closing time, etc. The precise control of these parameters is the key to ensure the normal operation of the nozzle and the quality of the cast billet.

[0033] The working modes of a continuous casting machine are generally divided into the following types, including but not limited to: pouring stop mode, production preparation mode and preparation pouring mode.

[0034] The pouring stop mode refers to the stage when the pouring is stopped after each molten steel pouring process. At this stage, the continuous casting machine's billet has not yet completely cooled and solidified, so the nozzle needs to be specially treated.

[0035] Production preparation mode refers to a working mode when the continuous casting machine is shut down and ready to restart production. In this mode, the system will check and clean the nozzle according to actual needs to prepare for the upcoming production process.

[0036] The preparation pouring mode refers to the preparation state of the continuous casting machine before entering the pouring process. In this mode, the casting machine has entered the production stage, and the cooling work of the nozzle needs to be resumed immediately to ensure that the newly poured molten steel can be properly cooled during the rapid solidification process.

[0037] S120. Based on the above working mode, the opening time, closing time and pressure of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling zone are automatically controlled to optimize the working state of the secondary cooling nozzle.

[0038] For example, in the continuous casting production process, the working state of the secondary cooling nozzle directly affects the cooling effect, surface quality and uniformity of the internal structure of the ingot. The core function of step S120 is to automatically adjust the working parameters of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling partition according to different working modes to improve the working state of the secondary cooling nozzle, thereby optimizing the cooling effect of the nozzle.

[0039] The switch control of the secondary cooling water valve is an important part to ensure the normal operation of the nozzle. In different working modes, the flow of the secondary cooling water is automatically controlled according to the current production status; this automatic control method enables the switch of the secondary cooling water valve to respond promptly to changes in the production status, avoiding delays or misoperations caused by human operation, and ensuring the efficient operation of the secondary cooling system.

[0040] The control of the secondary cooling compressed air valve is also crucial. Compressed air is not only used to purge the nozzles and pipes to prevent moisture residue or scale accumulation, but also helps to adjust the cooling effect of the nozzles. By automatically controlling the opening time, closing time and pressure of the compressed air, it can effectively avoid the problem of unstable nozzle spraying effect caused by insufficient or excessive compressed air pressure.

[0041] In some embodiments,

[0042] The above-mentioned pouring stop mode is the tail billet mode, and the tail billet is pulled out of the fan-shaped segment;

[0043] The above production preparation mode is an upper ingot rod mode for pulling the ingot.

[0044] For example, in the continuous casting production process, the pouring stop mode and the production preparation mode are two key working modes, which play an important role in the operation of the continuous casting machine. These modes ensure that the secondary cooling nozzle and the cooling system can be adjusted in time according to different production requirements to improve the working efficiency of the nozzle, the cooling effect and the quality of the cast billet.

[0045] The pouring stop mode refers to the continuous casting machine entering a stop stage after the molten steel pouring is completed, among which the tail billet mode is a specific state of the pouring stop mode. When the tail billet (the last section of the billet) is pulled out, it enters the stop stage. In this mode, the pouring of molten steel has stopped, and the cooling process of the billet is still in progress. Therefore, the cooling effect of the nozzle is still necessary, but large-scale cooling is no longer required.

[0046] Production preparation mode refers to the stage when the continuous casting machine stops and is ready to restart production. The upper ingot bar mode is a working state in the production preparation stage, usually used in the process of the billet being lifted from the crystallizer. In this mode, the relevant devices of the casting machine (such as the upper ingot bar) are activated, ready to pull the billet and start a new production cycle.

[0047] In some embodiments, it also includes:

[0048] When the current working mode is the above-mentioned pouring stop mode, when it is detected that the tail billet reaches the preset position, the pressure of the above-mentioned secondary cooling compressed air valve is automatically adjusted.

[0049] For example, the tail billet refers to the last segment of the cast billet in the pouring of molten steel, which usually appears at the end of the pouring cycle. The state and position of the tail billet is one of the important parameters of the continuous casting machine control system, which marks the end of a pouring cycle. Therefore, real-time monitoring of the tail billet helps to determine whether to enter the stop pouring stage.

[0050] The system detects when the tail billet reaches a specific preset position through displacement sensors, conveyor belt monitoring devices or other real-time tracking devices. This position is usually a certain distance from the last pouring point after the billet leaves the crystallizer. When the tail billet reaches this position, it means the end of the pouring process and the initial solidification stage of the billet is about to be completed. The detection of the tail billet position also marks the switching of the working mode. After the system detects that the tail billet has reached the preset position, it will automatically switch from the normal pouring stage of the pouring to the pouring stop mode and start to perform tasks such as nozzle cleaning and pressure adjustment.

[0051] In some embodiments, it also includes:

[0052] When the current working mode is the above-mentioned watering stop mode, the above-mentioned secondary cooling water valve is controlled to be closed; the above-mentioned secondary cooling compressed air valve is controlled to remain in an open state, and the pressure of the above-mentioned secondary cooling compressed air valve is controlled to be a preset pressure, and after continuing for a preset time, the above-mentioned secondary cooling compressed air valve is controlled to be closed.

[0053] For example, in the continuous casting production process, the pouring stop mode is an important working state, especially after the pouring is completed, the management and control of the nozzle is crucial. In this mode, the precise control of the secondary cooling water valve and the secondary cooling compressed air valve not only helps the normal operation of the nozzle, but also prevents scale accumulation, keeps the nozzle clean, avoids clogging and ensures the uniformity of the spray effect.

[0054] After the pouring process is completed, the secondary cooling nozzle still needs to maintain the cooling function to ensure the stable solidification of the ingot. The control of the secondary cooling water valve in the pouring stop mode is to ensure that cooling water will not continue to be injected into the nozzle in the stage after the pouring is completed. At this time, the reason for closing the secondary cooling water valve is to prevent the water flow from affecting the nozzle cleaning. When the secondary cooling water is continuously sprayed, water may accumulate in the nozzle and the pipe. If the secondary cooling water valve is not closed in time, the water may cause scale deposition and affect the normal function of the nozzle. Scale accumulation will cause the nozzle pores to be blocked, thereby affecting the spray effect and further affecting the cooling uniformity of the ingot. To avoid waste of resources, in the stop pouring stage after the pouring is completed, the cooling speed of the ingot has been greatly slowed down, and there is no need to continue to inject a large amount of water. This can save cooling water resources and avoid unnecessary water waste.

[0055] When the system enters the pouring stop mode, the secondary cooling water valve will be closed. The closing method is to perform precise control based on the recognition of the working mode; when the pouring is completed, the system will monitor the state of the ingot and the working condition of the nozzle in real time, and determine whether the secondary cooling water valve needs to be closed through intelligent recognition. The system will switch the state of the secondary cooling water valve according to the preset stop time or a certain period of time after the end of pouring to ensure that the nozzle will not be affected by excess water during the stop process.

[0056] In the pouring stop mode, the control of the secondary cooling compressed air valve plays a vital role. Although the cooling water has been turned off, the nozzle still needs to be kept clean to ensure that the internal moisture does not scale and cause the nozzle to clog. At this time, compressed air plays a key role and continues to purge through the nozzle to keep the nozzle clean and prevent clogging. By blowing compressed air through the nozzle and pipeline, residual moisture or impurities can be effectively removed to prevent scale from forming. If scale and impurities accumulate for a long time, it will seriously affect the spray effect of the nozzle and even cause the nozzle to clog, resulting in uneven cooling effect. Purging not only helps clean the nozzle, but also restores the nozzle to normal spray effect, avoids uneven cooling due to too much or too little moisture, and ensures uniform and stable spray atomization.

[0057] In the pouring stop mode, the secondary cooling compressed air valve will remain open and the compressed air pressure will be controlled within the preset range. The steps are as follows:

[0058] The pressure of the secondary cooling compressed air is usually adjusted according to the working requirements of the nozzle. For example, the system will set an appropriate pressure value according to the specifications of the nozzle, the spraying requirements, and the state of the nozzle (such as whether there is residual moisture). The preset pressure is less than or equal to 3.0 Bar. In this embodiment, the pressure can be set to 3.0 Bar, but in different application scenarios, it may be fine-tuned according to specific needs.

[0059] In the pouring stop mode, the opening time of the compressed air is usually maintained at a preset time, wherein the preset time is greater than or equal to 10 minutes. In this embodiment, the preset time is preferably set to 10 minutes. This time setting is determined after system optimization and experience accumulation, and the purpose is to ensure that the residual water in the nozzle can be completely blown out. The length of this time period is sufficient to clean the water inside the nozzle and blow away any residual water droplets and impurities to avoid the accumulation of scale.

[0060] After the compressed air purge is completed, the system will automatically detect the working status of the nozzle to confirm whether the purge is completed. After the preset purge time is completed, the compressed air valve is closed to save energy and prepare for the next production cycle. In the pouring stop mode, the automatic closing of the secondary cooling compressed air valve is a very important step. The closing of the compressed air valve can not only save energy, but also avoid excessive consumption of compressed air. Through the control system, according to the preset stop pouring time and nozzle status, the compressed air valve will be closed in time after the purge is completed to avoid unnecessary air waste. When closed, the system uses an intelligent algorithm to determine whether the nozzle has reached a clean state to ensure that the compressed air is reasonably used throughout the stop pouring stage. The shutdown function can avoid excessive purge of the nozzle and prevent unnecessary pressure on the internal structure of the nozzle, thereby extending the service life of the nozzle.

[0061] For example, in the pouring stop mode, the design of closing the secondary cooling water valve and keeping the secondary cooling compressed air valve open effectively solves the problems of nozzle blockage and scaling. The closing of the secondary cooling water valve avoids water waste and nozzle blockage, while the opening and pressure control of the compressed air valve ensure that the nozzle is clean and maintains the best working condition. Through the preset purge time and pressure control, the system can efficiently remove moisture and impurities inside the nozzle and prepare for the next production cycle. This control method not only improves the working efficiency of the nozzle, but also reduces energy waste, and improves the overall efficiency of the continuous casting production line and the quality of the ingot.

[0062] In some embodiments, it also includes:

[0063] When the current working mode is the upper ingot rod mode, the secondary cooling compressed air valve is controlled to be opened, and the pressure of the secondary cooling compressed air valve is controlled to be a preset pressure, until the current working mode is changed to the preparation for pouring mode, and the secondary cooling compressed air valve is controlled to be closed.

[0064] For example, in the continuous casting process, the upper ingot bar mode is a very critical working state, which represents the stage when the continuous casting machine is ready to resume production from the shutdown state. The function of the upper ingot bar is to pull the billet out of the crystallizer and enter the next cooling and solidification stage. At this time, the management of the nozzle and cooling system is particularly important to ensure that the nozzle can be cleaned smoothly and resume normal operation to support the next casting process.

[0065] In the upper ingot rod mode, the continuous casting machine is preparing to resume production. Although the cooling water is not turned on, the operation of the secondary cooling compressed air is essential for the cleaning and preparation of the nozzle. At this time, the nozzle may have residual moisture or impurities after the shutdown period, and it needs to be purged to ensure that the nozzle can work normally in the upcoming casting process. The secondary cooling compressed air valve is opened, and the compressed air is continuously purged to remove moisture, impurities or scale inside the nozzle and pipe to ensure the smooth operation of the nozzle. The steps are as follows:

[0066] When the system enters the upper ingot bar mode, the program control system will open the secondary cooling compressed air valve according to the current working mode. At this time, the nozzle needs to be cleaned in advance so that it can quickly enter the normal working state when the subsequent pouring stage begins.

[0067] After opening the compressed air valve, the system will set the pressure of the compressed air to a preset pressure. In the embodiment of the present application, it is preferably set to 3.0 Bar. The setting of this pressure takes into account the cleaning needs of the nozzle. It must be strong enough to clean the residue in the nozzle, but not too high to avoid excessive pressure on the nozzle and pipeline, thereby avoiding damage to the nozzle or pipeline. In the upper ingot rod mode, the pressure of the compressed air will remain stable to ensure that the nozzle is fully cleaned within the predetermined time. In this process, the compressed air not only purges the inside of the nozzle, but also may clean up any residual moisture or impurities to prevent these substances from clogging the nozzle in subsequent work.

[0068] For example, the upper ingot bar mode is only part of the production preparation stage. Once the system enters the pouring state, the cooling of the nozzle must be restored and the compressed air purge must be turned off at the appropriate time to avoid unnecessary burden on the system or energy waste. The closing of the compressed air valve must be accurately timed, and the steps are as follows:

[0069] When the system detects that the nozzle in the upper ingot bar mode has been cleaned and the residual water in the nozzle has been blown away, the system will determine that compressed air is no longer needed to continue working. At this time, the compressed air valve will be closed to save energy and prevent over-blowing.

[0070] The system will switch to the pouring preparation mode at the end of the upper ingot bar mode. At this time, the closing of the secondary cooling compressed air valve ensures that the nozzle can smoothly enter the pouring state and restart the nozzle's spray function when needed.

[0071] When the pouring mode is started, the pressure of the secondary cooling compressed air valve is usually readjusted according to actual needs and the spray function of the nozzle is restored. This closure when switching working modes ensures that the nozzle can work accurately and efficiently during the pouring process.

[0072] By opening the secondary cooling compressed air valve and controlling the pressure in the upper ingot bar mode, the continuous casting machine can clean the nozzle efficiently and accurately, ensuring that the nozzle is always in the best working condition during the pouring preparation process. The system avoids energy waste and reduces the risk of nozzle blockage by intelligently controlling the working time and pressure of compressed air. This automated process improves the cleaning efficiency of the nozzle and the stability of the production process, which helps to improve the overall casting quality and production efficiency.

[0073] In some embodiments, when the working mode is changed to the pouring preparation mode, the secondary cooling water valve is automatically opened as needed to provide necessary cooling water.

[0074] For example, in the continuous casting production process, the preparation pouring mode is a key working state, which means that the continuous casting machine is ready to enter a new pouring cycle, and the nozzle cooling system also needs to be adjusted according to the new production requirements. In this mode, the automatic opening of the secondary cooling water valve ensures that the cooling requirements of the nozzle during the pouring process can be met, maintaining the appropriate temperature of the ingot and ensuring cooling uniformity.

[0075] Secondary cooling water plays a key cooling role in the continuous casting process. It is mainly used to control the surface temperature of the ingot to prevent surface cracks or defects caused by too fast cooling. When entering the preparation pouring mode, the casting machine is ready to start a new round of molten steel pouring. At this time, the secondary cooling water valve needs to be automatically opened to provide sufficient cooling water for the nozzle. Before pouring, the system will automatically control the opening of the secondary cooling water valve according to the change of working mode and the cooling demand of the nozzle. When the system detects that the working mode switches from stop pouring or other stages to the preparation pouring mode, the secondary cooling water valve will automatically open to prepare for the necessary cooling for the upcoming pouring. After the secondary cooling water valve is opened, the cooling water will be evenly sprayed on the surface of the ingot according to the set flow rate and spray effect to ensure the reasonable control of the temperature of the ingot during the pouring process. The opening and spraying of secondary cooling water helps to improve the cooling uniformity of the nozzle. By automatically controlling the water flow, the system can avoid too much or too little cooling water, thereby avoiding local overheating or overcooling of the surface temperature of the ingot and ensuring the uniformity of the entire ingot cooling process.

[0076] In some embodiments, the preset time is greater than or equal to 10 minutes.

[0077] Exemplarily, the preset time of 10 minutes is the setting for the opening time of the secondary cooling compressed air valve. The purpose of this time setting is to ensure that the secondary cooling nozzle can effectively clean and remove residual moisture or impurities in the nozzle and pipeline. Through reasonable time setting, the best purging effect can be achieved while avoiding unnecessary energy waste. In the pouring stop mode or the upper ingot rod mode, after the secondary cooling water valve is closed, moisture may remain inside the nozzle. If this moisture is not removed in time, scale will form in the nozzle, causing nozzle blockage or uneven spray effect. Therefore, it is necessary to purge with compressed air to completely remove the moisture and impurities inside the nozzle. The preset time greater than or equal to 10 minutes is based on the nozzle cleaning requirements, the design specifications of the nozzle and pipeline, and the actual production experience. This length of time is sufficient to ensure that the compressed air can fully purge the residue inside the nozzle and pipeline, and ensure that the working state of the nozzle is optimal.

[0078] In some embodiments, the preset pressure is less than or equal to 3.0 Bar.

[0079] For example, the preset pressure of 3.0 Bar is the pressure setting of the compressed air used when the secondary cooling compressed air valve is opened. The purpose of this pressure setting is to ensure that the compressed air can effectively clean the residual moisture or impurities inside the nozzle and pipeline, and ensure that the blowing effect is not affected by excessive pressure. Reasonable pressure setting can ensure that the compressed air can blow out the moisture or impurities in the nozzle and pipeline with appropriate force without causing damage to the nozzle or causing damage to the pipeline.

[0080] The preset pressure of 3.0Bar is based on the nozzle design requirements, pipeline structure and actual production experience. This pressure value can ensure that the compressed air can fully play its role in the purge process, remove residual moisture and impurities, and avoid damage or excessive wear of the nozzle due to excessive pressure. If the pressure is too low, the purge effect of the compressed air may be poor, and the moisture or impurities inside the nozzle cannot be effectively cleaned, thus affecting the spray effect and even causing the nozzle to be blocked. If the pressure is too high, it may lead to energy waste and increase the risk of equipment damage, especially for more fragile nozzles and pipeline structures.

[0081] Therefore, setting the pressure to less than or equal to 3.0 Bar is the balance point to ensure effective cleaning and energy conservation, which can achieve the best nozzle maintenance effect and avoid unnecessary energy consumption and equipment loss. In this embodiment, it is preferably set to 3.0 Bar.

[0082] See also Figure 2 , is a schematic structural diagram of an intelligent control device for a continuous casting secondary cooling nozzle provided in an embodiment of the present application, comprising:

[0083] A mode recognition unit 21 is used to obtain the working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode and a preparation pouring mode;

[0084] The operation execution unit 22 is used to automatically control the opening time, closing time and pressure of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling zone based on the working mode to optimize the working state of the secondary cooling nozzle.

[0085] See also Figure 3 The embodiment of the present application also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, the steps of any one of the above-mentioned methods for intelligent control of a continuous casting secondary cooling nozzle are implemented.

[0086] Since the electronic device introduced in this embodiment is a device used to implement an intelligent control device for a continuous casting secondary cooling nozzle in the embodiment of the present application, based on the method introduced in the embodiment of the present application, technical personnel in this field can understand the specific implementation mode of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application is not introduced in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of the present application falls within the scope of protection of this application.

[0087] During the specific implementation process, when the computer program 311 is executed by a processor, any implementation method in the embodiments corresponding to the first aspect can be implemented.

[0088] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0089] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0090] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0091] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0092] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0093] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes Figure 1 The process of an intelligent control method for a continuous casting secondary cooling nozzle in the corresponding embodiment.

[0094] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0095] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0096] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0098] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0099] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0100] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0101] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0102] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. An intelligent control method for a continuous casting secondary cooling nozzle, characterized in that: The method comprises: Acquire the working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode and a preparation pouring mode; Based on the working mode, the opening time, closing time and pressure of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling zone are automatically controlled to optimize the working state of the secondary cooling nozzle.

2. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 1 is characterized in that: The pouring stop mode is the tail billet mode, and the tail billet is pulled out of the fan-shaped segment; The production preparation mode is an upper drawbar mode for pulling the ingot.

3. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 1, characterized in that: Also includes: When the current working mode is the watering-stop mode, the secondary cooling water valve is controlled to be closed; the secondary cooling compressed air valve is controlled to remain in an open state, the pressure of the secondary cooling compressed air valve is controlled to be a preset pressure, and after continuing for a preset time, the secondary cooling compressed air valve is controlled to be closed.

4. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 2 is characterized in that: Also includes: When the current working mode is the upper ingot rod mode, the secondary cooling compressed air valve is controlled to be opened, and the pressure of the secondary cooling compressed air valve is controlled to be a preset pressure, until the current working mode is changed to the preparation for pouring mode, and the secondary cooling compressed air valve is controlled to be closed.

5. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 3 is characterized in that: The preset time is greater than or equal to 10 minutes.

6. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 3 or 4, characterized in that: The preset pressure is less than or equal to 3.0 Bar.

7. The intelligent control method for the continuous casting secondary cooling nozzle according to claim 1, characterized in that: Also includes: When the current working mode is the pouring stop mode, when it is detected that the tail billet reaches the preset position, the pressure of the secondary cooling compressed air valve is adjusted.

8. An intelligent control device for a continuous casting secondary cooling nozzle, characterized in that: include: A mode recognition unit, used for acquiring the working mode of the continuous casting machine, wherein the working mode includes a pouring stop mode, a production preparation mode and a preparation pouring mode; The operation execution unit is used to automatically control the opening time, closing time and pressure of the secondary cooling water valve and the secondary cooling compressed air valve of each secondary cooling zone based on the working mode to optimize the working state of the secondary cooling nozzle.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement the steps of the intelligent control method for the continuous casting secondary cooling nozzle as described in any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the intelligent control method for the continuous casting secondary cooling nozzle according to any one of claims 1 to 7 is implemented.

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