| 摘要 |
A method of monitoring radial clearances in a steam turbine during operation of the turbine is provided. The method, in an exemplary embodiment, includes measuring a temperature of the rotor shaft at a time1 and at a time2, measuring a temperature of the rotor blade at time1 and at time2, measuring a temperature of the shell at time1 and at time2, calculating a shaft radial growth between time1 and time2, calculating a blade growth between time1 and time2, calculating a shell radial growth between time1 and time2, and determining a change in a radial gap between the shell and a distal end of the rotor blade from time1 to time2 using the following equation: change in radial gap=shell radial growth-shaft radial growth-blade growth.
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