METHOD OF DIAGNOSING FORMS OF RESONANCE VIBRATIONS OF TURBOMACHINERY IMPELLER BLADES Russian patent published in 2017 - IPC G01M15/14 

FIELD: machine engineering.

SUBSTANCE: airflow pressure pulsations are registered by means of at least four sensors mounted with a tolerance on a turbomachine housing in the zone of the axial size of the peripheral portion of the impeller blades, at least two of which are located along the longitudinal axis of the turbomachine, and at least three - transversely to the latter, isolated resonance time intervals for each of the sensors in the waveform, determine the moments of passage of the blades under the sensors in the selected resonant time intervals, sets of deviation from the theoretical points of passage of each blade underneath each of the sensors in the absence of vibrational processes which determine the nature of the oscillations, diagnose form of resonance oscillations by comparing the received data with the reference waveforms of turbomachinery impeller blades.

EFFECT: turbomachinery reliability increase.

2 cl, 7 dwg