Shrouded turbine blade vibration monitor

Details Shrouded turbine blade vibration monitor Shrouded turbine blade vibration monitor

1988-06-02

1990-01-30

Tokar, Michael J.

Measuring and testing

Vibration

Sensing apparatus

324207, G01H 1100

Patent

active

048965375

ABSTRACT:
A shrouded turbine blade vibration monitoring system is comprised of a plurality of sensors for sensing a profile of a turbine blade row. A microprocessor compares the sensed profile to an expected profile of the turbine blade row to detect motion of the turbine blades due to vibration. The microprocessor then generates an operator alarm and trips the turbine in response to the detection of unacceptable vibration of the turbine blades.

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patent: 4144421 (1979-03-01), Sakai
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patent: 4422333 (1983-12-01), Leon
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patent: 4593566 (1986-06-01), Ellis
patent: 4644270 (1987-02-01), Oates et al.
patent: 4790189 (1988-12-01), Twerdochlib
Jones, Development of a Noninterference Technique for Measuring Turbine Engine Rotor Blade Stresses, AIAA 21st Joint Propulsion Conference, (1985).

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