The problems of detecting and eliminating defects in elastic suspension systems for the stators of various types of high-power turbogenerators are examined. Results are presented from theoretical and experimental studies of the resonance properties of components of the elastic suspension systems for turbogenerators for powers of 320 MW and above. A method of monitoring the state of the components of elastic suspension systems based on studies of their natural oscillations and the criteria for this method are described. An example of the practical use of this method is given.
Analysis of the operational experience and diagnostics of turbogenerators is used to show that the actual life of a turbogenerator should not be treated as the decisive factor for making judgment on the necessity of its replacement or updating. The efficiency of diagnostic service and inspection of long-operating and newly commissioned turbogenerators is proved on the basis of results of a study of over 100 turbogenerators of various types and capacities. It is shown that timely detection and removal of flaws in the initial stage of their development is a substantial factor determining the possibility of extending the service live and ensuring reliable operation of turbogenerators.
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