Directing against the calculation of steam leakage rate from steam seal of the balancing disc in HP and MP cylinders of the steam turbine

a mathematic model for error analysis has been established by introducing the steam-temperaturing variating method and the numerical calculation method.In the test of steam leakage rate from steam seal of the balancing disc in HP and MP cylinders of one supercritical 600 MW steam turbine

the results obtained from applying above-mentioned two methods are basically identical

it shows that the numerical calculation method can accurately estimate the said steam leakage rate.Based on the mathematical model error analysis

the influence of error in each measured parameter upon the precision of said steam leakage rate has been calculated

results show that the temperature of reheated steam and the temperature of exhausted steam from MP cylinder in the said measured parameters have the greatest influence upon the precision of steam leakage rate from the