抄録
Because last stage blade is operated under wet steam condition, it is difficulty to measure the efficiency of auxiliary steam turbine. The measurement method of efficiency for auxiliary steam turbine driven feed pump is presented in this paper. This method is based on thermodynamic method and shaft power of auxiliary steam turbine, then the efficiency of auxiliary steam turbine is obtained. Firstly, the measurement theory and method of efficiency test are introduced, then the formulas of efficiency for auxiliary steam turbine driven feed pump are provided, at last, some auxiliary feed pumps of 300MW and 600MW steam turbine have been test. Measurement data shows the method can get good measurement data for efficiency of auxiliary steam turbine and it is suitable for engineering application.
