Research On The Life Monitoring And Management Of Steam Turbine

With the development of electric power industry, it is required that higher dependability to the electric equipment. To improving the peak load capacity of power network, it is the trend that the large capacity steam turbine units take part in peak load operation. So the enhanced life management of the thermal units' components has become one of foci in the contemporary electric power system. During the steam turbine being started,stopped or load changing, it bears high stresses . Rotors and cylinders are the most important components in the steam turbine, and the dependability of them directly influences the operation and safe of a power plant, so the life management of the steam turbine mainly aims at its rotors.This paper studied two-dimension model of rotor and cylinder and builded the finite element model. Generally take the rotor and the cylinder as control objects,definite their boundary conditions,solute their temperature fields,and then analyst their bear expansions and distortions as well as thermal stress distribute,to control the courses,and keep the unit the most optimum operating condition. And put the theories into practice developed by C++ program, used as the important part of the online monitoring and management system of life of the steam turbine.