Research And Development On Real-time Condition Monitoring System For Steelmaking Converter

Iron and Steel plays an irreplaceable role in national economic development. Converter steelmaking, as the major steel-making method of the current steel industry, approximately accounts for 60% of the world's steel output and 80% of China's. Therefore, condition monitoring of the steel-making converter has important practical significance in many aspects, such as timely discover hidden failures, ensure the smooth progress of steel production, reduce maintenance costs, and improve product quality. This subject took "Real-time condition monitoring of converter steel-making" from the domestic large-scale iron and steel enterprises as research object. On the basis of full investigation and study of construction and steel making process characteristics of the converter equipment, analyzed device operating characteristics, fault types and features of the converter steelmaking process. Combined with the actual demands for iron and steel enterprises, an integrated real-time condition monitoring system of steelmaking converter implementation program based on multi-sensor signal conversion, data acquisition, state analysis, state determine and display was proposed, and the system specific design and implementation was completed.The device mechanical transmission relationships and the mechanism of torsional oscillation phenomenon in the steel-making process was studied, using strain detecting method to monitor the dynamic torque characteristic of the converter trunnion and torsion bar, expounded the relevant monitoring theory and measurement circuit design.According to the characteristics of converter condition monitoring, combined with the actual situation of steelmaking field, the overall framework design of the monitoring system was accomplished, and the system hardware component, data collection equipment selection, status signal acquisition and sensor module design, and the system signal connection relationship were expounded in detail.Combined with actual needs of the steel enterprises, analyzed software operating platform selection and functional requirements of the monitoring system, the idea of the overall system software design was proposed, using multi-threaded and modular design methods. The specific application in the monitoring system software development of dynamic link library(DLL), multi-threading technology, data storage and management technology was represented. Described the division of software modules and the relationships between them in the development process, and detailed the specific implementation and technical points of each module.Based on the research above, a real-time condition monitoring system of steel-making converter was developed, and it was tested in Shougang Qiangang converter steelmaking site, the results show that the system was running well, monitoring data was accurate and reliable, could meet the converter condition monitoring needs of the steel enterprises.