A method for predictive maintenance of a steam turbine rotor

Abstract

The application relates to a steam turbine rotor predictive maintenance method, which comprises the following steps: collecting full-life cycle basic data of a steam turbine rotor, performing function analysis and equipment classification on components of the steam turbine rotor based on the full-life cycle basic data of the steam turbine rotor, performing failure mode and effect analysis according to the results of the function analysis and the equipment classification to obtain a failure mode of a to-be-maintained component in the steam turbine rotor and a risk priority number of the failure mode; evaluating a state level of the to-be-maintained component in the steam turbine rotor, evaluating an overall state of the steam turbine rotor and predicting an actual residual life of the to-be-maintained component based on the state level of the to-be-maintained component; matching a corresponding maintenance decision result according to the risk priority number of the failure mode of the to-be-maintained component and the overall state of the steam turbine rotor, performing maintenance on the to-be-maintained component according to the maintenance decision result, and performing maintenance effect evaluation on the components after the maintenance is performed, so that the maintenance decision in the subsequent step is optimized according to the maintenance effect evaluation.