| 摘要 |
PURPOSE:To detect erosion of a turbine rotor securely by calculating all cobalt volume from cobalt concentration of condensation which flows in a water supplying tube and flow rate of the condensation and by judging the state from comparison of the volume with a reference value. CONSTITUTION:Cobalt concentration of condensation which flows in the water supplying tube 12 of a steam turbine 9 is calculated every unit time by an analyzer 4, flow rate of the condensation is detected by a flow meter 16, and cobalt volume is calculated by a convertor 5 from a condensation volume integrator 5a and the analyzer 4. And by comparing all cobalt volume which is integrated by a cobalt volume integrating meter 6 with pre-determined reference value, a warning signal is outputted from a judging meter 7 when said volume exceeds the reference value. Thus, erosion of a turbine rotor can be detected securely. |
