MONITORING SYSTEM TO PRESENT OSCILLATORY STATES OF BLADES ON ROTATING IMPELLER Russian patent published in 1999 - IPC

FIELD: diagnostics of turbomachines. SUBSTANCE: monitoring system has sensor attached to impeller connected to pulse pickup. The latter generates sensor pulses marking time moment during which blade passes past sensor. Marking transducer generates marking pulse when impeller is in certain zero position. Evaluation device includes module of adjustment to correspondence that adjusts each sensor pulse in correspondence with blade causing it and converts sensor pulses of each blade into oscillatory data which characterize oscillatory state of blade. Collecting module has access to on-line storage circuit that memorizes assemblage of obtained data for each blade, stores or re-writes memorized data with arrival of new data. Read-out device retrieves data from on-line storage circuit. Given system is capable of display of increased load on blades due to constant presentation of oscillatory states. EFFECT: enhanced reliability of monitoring system. 12 cl, 2 dwg