Device for measuring vibrations on rotating blade

Details Device for measuring vibrations on rotating blade Device for measuring vibrations on rotating blade

1992-03-05

1993-04-13

Williams, Hezron E.

Measuring and testing

Vibration

Sensing apparatus

73660, G01D 532

Patent

active

052012271

ABSTRACT:
A device for measuring vibrations of a rotating blade of a gas turbine includes an optical probe that is mounted within a casing of the rotating blade. The probe includes a light projecting and a light receiving optical fiber along with associated focusing lenses and a protective glass. In addition, liquid coolant channels are provided within the probe housing and air coolant channels are provided within the blade casing in order to protect the probe from the hostile environment of the turbine.

REFERENCES:
patent: 3584509 (1971-06-01), Compton et al.
patent: 4049349 (1977-09-01), Wennerstrom
patent: 4060329 (1977-11-01), Ellis
patent: 4593566 (1986-06-01), Ellis
patent: 4648711 (1987-03-01), Zachary
patent: 4799751 (1989-01-01), Tekippe
patent: 4851666 (1989-07-01), Anderson et al.
patent: 4995257 (1991-02-01), Leon
Vibration Measurements on Turbomachine Rotor Blades With Optical Probes by H. Roth, pp. 215-224 Preface and Contents.

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