Operating turbine resonant blade monitor

Details Operating turbine resonant blade monitor Operating turbine resonant blade monitor

1990-07-24

1992-10-06

Williams, Hezron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73650, 310 51, 310 40R, G01H 1300, G01N 2912

Patent

active

051521725

ABSTRACT:
An operating turbine monitor is described incorporating one or more acoustic sensors positioned next to a blade row of a rotor, an analog digital converter, a tachometer sensor at the rotor shaft, a memory, a synchronous averaging circuit, a subtractor circuit, and a comparator. The invention overcomes the problem of monitoring an operating turbine of order-related turbine blade vibration and for non order-related turbine blade vibration as well as for other turbine conditions.

REFERENCES:
patent: 3561261 (1971-02-01), Conniff et al.
patent: 4793186 (1988-12-01), Hurley
patent: 4808863 (1989-02-01), Andersson
patent: 5049768 (1991-09-01), Andersson
J. D. Hurley and W. H. South, "Torsional Monitoring System for Turbine-Generator Units", Proceedings of American Power Conferences, vol. 41, 1979 pp. 1163-1169.

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