Common Vibration Of The Turbine Generator Fault Diagnosis

The theoretical and technical research on diagnosis of mechanical equipment have become perfected. But it is the last tache that how to apply its result to producing practice.Turbogenerators is an important equipment for electric power producing, because of structural complexity in its equipment and special circumstance in its running, cause the fault rate high, the harm is big. Therefore, as to it's necessary that the familiar vibrating fault diagnosis of understanding and mastering. According to this land of consideration just made selection turbogenerators a research for familiarly vibrating fault diagnosis, investigating how from the machine set behavior synthesizes its characteristic, determining the nature with information to the fault according to the related data, then as to it's output reason or mechanisms do the judgement, and makes sure to solve.The thesis expatiated the behavioral and complicated degree in machine first, and to evaluate the degree of complexity of running condition, proposes two methods: qualitative graphic method-recurrence plot and quantitative estimation criterion. Both method can effectively describe the complexity of running condition. The predictability of running condition based on these two methods is also discussed.To the turbogenerators for familiarly vibrating fault proceeding diagnosis, first wanting proceeding vibration testing, this will begging not only wanting acquainting with test with principle, method and outline, and fulfillment experience controlling certainly. It's accurate to measure vibration signal, demand the data according to take into the analysis with handles, therefore the vibration data analyzes the understanding of the method with control and then seem to be particularly for importance. Thesis is in simple introduction a few analysis method and steady data of fettles with the foundation of the characteristic sketch of the data of instantaneous fettle lastly, put forward vibration signal of some concrete problem.The high speed revolves machine design with an important problem that circulate the inside is a control with lower the shafting force the vibration responds to, still exsist at the same time another an also important problem: The rotor loses steady with from arouse the vibration. Past but discuss the turbogenerators a shafting problem, describe two kinds of characteristics that lose the steady pattern with judge the method and then become the contents of thesis chapter 5.Turbogenerators a type, characteristic, judgement method for familiarly vibrating fault, is a key place that thesis want to discuss, chapter 6 will join together a detailed proceeding introduction.Turbogenerators a science for familiarly vibrating fault diagnosis and electric power producing actual contact closely, having can right away converting into productivity value, and also is urgent request to producing practice.