DEVICE AND METHOD FOR MONITORING A ROTOR
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
Jan 3, 2012
filing date -
Jan 7, 2011
priority date (Note) -
Abandoned
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Abstract
A monitoring device for monitoring rotors of turbines, including: an acoustic sensor; and a sound waveguide for connecting the acoustic sensor to a sensing point close to the rotor of the turbine. The acoustic sensor is configured to detect, as soundwaves, pressure fluctuations due to pressure differences between suction and pressure sides of blades of the rotor as they move past in proximity of a sensing point. A method of monitoring a rotor of a turbine transmits pressure fluctuations due to pressure differences between suction sides and pressure sides of blades of the rotor going past the proximity of a sensing point by a sound waveguide to an acoustic sensor to be picked up as soundwaves.
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