Walking Beam Furnace Of Multistage Network Monitor System Design And Control Optimization

In recent years,automation technology has developed rapidly,especially in the field of industrial automation,a variety of control networks have been born.These control networks can complete communication tasks of various automatic systems,providing theoretical support for the realization of TIA technology advocated by Siemens.This design is based on a seamless steel pipe plant 180 heat treatment line project step beam type furnace as the research object,since there has been no replacement of new equipment and the electrical wiring in the factory is chaotic,resulting in a continuous increase in machine failure rates and a continuous decline in production efficiency,the original system must be upgraded.After the analysis and research of the original control system and equipment,we decided to use the multi-level network control technology to transform the whole control system and optimize the algorithm.This paper describes the use of multi-level network technology to solve old and new equipment to achieve unified network incompatibility issues.Using Siemens S7-1500 series programmable controller as the main control unit,through the organic integration of Modbus,Profibus-DP and Profinet,the site production equipment level,workshop monitoring level and enterprise management level seamlessly combined together.The PB-M bushbridge is used to make secondary use of the underlying equipment in the original system,which reduces the cost of system reconstruction.Siemens Scalance-X series switches are used to build redundant communication Network and VLAN-Virtual Local Area Network(VLAN-Virtual Local Area Network)to improve the redundancy,availability and security of the Network,so as to solve the problem of single point of failure and inter-ring communication,and realize the function of each production lines can be individually communications.According to the different characteristics of different temperature control sections of the system,different PID control strategies are used.The temperature of the heating section changes sharply,so the fuzzy PID control strategy is adopted to replace the original PID control strategy,while the temperature of the insulation section and the temperature of the average section changes in a small range,so the original PID control strategy is still maintained.Through MATLAB /Simulink simulation,it is proved that the effect of fuzzy PID control strategy in the heating section is better.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.Through the successful application of multi-level network control technology,industrial network and communication technology to transform the walking beam heating furnace control system,the efficiency of data transmission of the production line has been improved,the safety of data transmission has been ensured,the production efficiency of the production line has been increased,and the enterprise has brought came more revenue,create a higher economic value,at the same time also provides a good reference for similar systems upgrade.