Passive combustion turbine blade vibration monitor sensor

Details Passive combustion turbine blade vibration monitor sensor Passive combustion turbine blade vibration monitor sensor

1995-10-17

1998-06-09

Oda, Christine K.

Measuring and testing

Vibration

Sensing apparatus

73655, G01M 1300

Patent

active

057619565

ABSTRACT:
A passive blade vibration monitor sensor for determining an arrival time of a blade of a combustion turbine during operation, the sensor includes an optical lens which receives infrared radiation generated by the blade of the turbine and generates a sensor signal from the received infrared radiation, the sensor signal indicating an arrival time of the blade of the combustion turbine. Target material having an emissivity lower than the emissivity of the blade may be placed on the blade to enhance sensor sensitivity especially in shrouded blade environments.

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Andrenelli, L. et al., "Large-Bandwidth Reflection Fiber-Optic Sensors for Turbomachinery Rotor Blade Diagnostics," Sensors and Actuators A, vol. A32, No. 1/03, 1 Apr. 1992.

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