EXPERIMENTLAL MONITORING OF VIBRATION ON CENTRIFUGAL PUMP

Mechanical Engineering

ABSTRACT The main task of this Project was to summarize the reasons of turbo machine failure and a way of monitoring those causes during the operation of the turbo machine. Furthermore, the analysis of the results of Condition Monitoring (Vibration Monitoring) was explained with a practical experiment performed in the laboratory The results of our measurement indicate a significant variation in vibration trend as a function of operating conditions. The experimental results demonstrated that the vibration monitoring rig modeled various modes of machine failure. Failure can be caused either by single phenomenon or simultaneous phenomenon. Such phenomenon are as follows: • Balancing Motor which can become unbalanced sometimes which will affect the measurement itself. • Parallel Misalignment (misalignment of pump and motor) • Blade pass and Vane pass • Vortex shedding • FEA Analysis for Modal, Random Vibrations • Validation by FFT • Base plate Design Furthermore it can be emphasized that based on my observation during the measurement, when the revolution number was approaching 1500 [RPM], the noise of the turbo machine would dramatically increase when the flow rate was at its maximum. Thus, we can indicate that the noise was as result of high vibration. However, with the same revolution number (rotational speed) but lower flow rate the noise was not that much.

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