Monitoring System Of Ladle Bottom Blowing Argon Based On LabVIEW

In the molten steel refining process,the application of argon gas blowing technology at the bottom of the ladle can effectively accelerate the reaction speed of the materials in the molten steel,remove impurities and toxic gases in the molten steel,uniform molten steel temperature and uniform chemical composition,and further improve the molten steel Purity.Therefore,argon blowing at the bottom of the ladle has been widely used in the field of iron and steel smelting.In this paper,firstly,the historical background and development overview of the ladle bottom argon blowing process are explained,and the importance of the ladle bottom argon blowing process is explained in the process of system equipment modification.Secondly,by referring to relevant literature,it is found that the quality of the argon flow control directly affects the quality of steel.At the same time,the flow control can be performed by observing the changes of the exposed surface of the molten steel,and the principle of collecting images of the exposed surface of the molten steel can be further elaborated,as well as the influence of the argon blowing flow rate and the thickness of the steel slag on the formation of the exposed surface.Finally,the design of this paper is based on the acquisition of bare surface images by industrial cameras,combined with LabVIEW software and Siemens PLC,to design a ladle bottom blowing argon gas monitoring system.The setting value of this system is based on the changes of the molten steel bare surface.determine.Because in the process of molten steel refining,the temperature,height,and permeability of breathable bricks of different furnaces have a great influence on the model parameters,and the fuzzy controller is particularly suitable for mathematical models with unknown and nonlinear systems.At the same time,the traditional PID is In actual application,the requirements of the control system cannot be well met,so this paper designs a fuzzy adaptive PID controller to replace PID control.The Matlab / Simulink simulation proves the effectiveness of its control.The fuzzy adaptive PID control effect is better than the traditional PID control,which can provide a useful reference for the optimization design of the actual ladle bottom argon blowing system and similar systems.The control method of automatically adjusting the actual value of the argon gas flow rate by detecting the change of the exposed area of the molten steel surface avoids the occurrence of slag entrapment in the molten steel caused by excessive argon gas flow rate,and provides a basis for the actual argon blowing system.In the control strategy of the ladle bottom blowing argon gas system,the fuzzy PID control strategy is used to improve the automation level of the ladle argon blowing equipment and shorten the refining time.The control method of automatically adjusting the actual value of the argon gas flow rate by detecting the change of the exposed area of the molten steel surface avoids the occurrence of slag entrapment in the molten steel caused by excessive argon gas flow rate,and provides a basis for the actual argon blowing system.In the control strategy of the ladle bottom blowing argon gas system,the fuzzy PID control strategy is used to improve the automation level of the ladle argon blowing equipment and shorten the refining time.