The Research And Design Of On-line Performance Monitoring System Of Steam Turbine For Feed-water Pump

It is very important and meaningful to study steam turbine's varying conditions. In all the steam turbine varying conditions, it is most difficult for the turbine to change from the critical state to subcritical (or reversely). In order to study the characteristics of steam turbine varying conditions, it is important to study when the flow state change from the critical state to subcritical (or reversely).Based on steam turbine's basic working principle, we discusses problems of calculating critical flow rate and critical pressure ratio of last stage of condensing turbine, various rules of some important parameters and exhaust enthalpy in steam turbine's performance monitoring.Using the theory of steam turbine's varying conditions, research thermodynamic calculation on steam turbine for feed water pump, and integrated to the monitoring state and maintenance assist support system of feed pump for YuanBaoShan Power Plant.