Abstract
The erosion caused by wet steam flow reduces the efficiency of the last stage rotor blades of condensing steam turbines, and makes their service life shorter. To date there has been insufficient data on the erosion process which the steam turbine rotor blades are subject to during the operation, data which could be a basis for development and verification of mathematical models to estimate the service life of eroded rotor blades. This paper reviews the results of many years monitoring and researching of the laws of the erosion process and its mechanism for rotor blades of condensing steam turbines. On the basis of the obtained laws of the rotor blades erosion process and a simplified model their service life is estimated.
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