| Circular material yard stacker reclaimer in thermal power plant is an important part of the coal transport and storage system,is mainly responsible for the transport and storage of coal.Circular material yard reclaimer is working in full closed circular stockyard,so compared to in the open-air yard work of traditional stacker reclaimer,on the impact on the surrounding environment has greater advantage.Circular material yard reclaimer advantages mainly include:yard area occupied,efficient environmental protection,with mixing material stack of function,high work efficiency,equipment automation level is high.The circular feed yard reclaimer,development of its original advantages,and improve take-off performance,more practical.Due to the circular stockyard stack reclaimer complex process,many detection and protection circuit,high reliability requirements,the electric control system is more stringent requirements.The in this circular stockyard stacker reclaimer control system development based on,through the research of circular material yard reclaimer process requirements,proposed a circular feed yard reclaimer electrical control system design scheme,and the host computer monitoring program and according to the actual process to for the using pressure sensor to measure the hydraulic system pressure value,and conversion for the reclaimer arm by torque value,according to the constant torque control,the reclaiming parts of automatic control,to optimize the traditional way of reclaiming.Design and configuration of the whole set of equipment of the network system program,completed the field hardware system assembly and the connection with the field equipment,and take the corresponding anti-interference measures.。Through the analysis of the system design requirements,follow the circular stockyard stack reclaimer process requirements,design and development in line with the appeal to the request of the control system,the system has good stability and reliability.The selection of PLC,frequency converter and the detecting element,such as hardware,and based on WinCC human-computer combined with operation monitoring system design and development,improve the circular material field stacker reclaimer control system of automation,networking and intelligent.The content has been successfully applied to the practice,after the commissioning,the equipment has good use effect. |
