Research And Application On The Method Of Condition Monitoring And Diagnosing For Steam Turbine Blade

In this thesis the development of noncontact monitoring blade vibration in China and other countries is summarized, the mathematical model of measuring blade vibration is presented, the monitoring system of blade vibration parameters in steam turbine is manufactured, and the theory of fuzzy diagnosis and the technology of multi-scale analysis are used to research fault blade. The discontinuous phase method combined with eddy current sensor is introduced to acquire blade dynamic signal。The author designed the program of computing blade vibration parameters and have made computer simulation,so we can get blade amplitude and frequency. It is right that the modal of discontinuous phase method measures blade vibration parameters and the monitoring system has a good perspective in engineering application.