System and method for detection of rotor eccentricity...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system

Reexamination Certificate

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C033S517000, C073S460000, C073S487000, C073S865800, C340S679000, C340S686300, C702S187000, C702S189000

Reexamination Certificate

active

07742881

ABSTRACT:
A method to determine eccentricity of a rotor in a turbine including: collecting sensor data of rotor eccentricity for a plurality of startup operations; establishing a baseline eccentricity value using the sensor data corresponding to a selected startup operation; determining an eccentricity value using the filtered sensor data for each of a plurality of startup operations subsequent to the selected startup operation; determining a rotor eccentricity difference between the baseline eccentricity value and each of the eccentricity values for the plurality of startup operations subsequent to the selected startup operation, and reporting a rotor eccentricity condition based on the rotor eccentricity difference.

REFERENCES:
patent: 2883255 (1959-04-01), Anderson
patent: 3270281 (1966-08-01), Mandle
patent: 4057754 (1977-11-01), Pattantyus-Abraham et al.
patent: 3-057901 (1991-03-01), None
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patent: 5-018739 (1993-01-01), None
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patent: 8-163841 (1996-06-01), None
patent: 10-061494 (1998-03-01), None
patent: 11-237238 (1999-08-01), None
patent: 2000-241282 (2000-09-01), None
patent: 2004-191326 (2004-07-01), None
“Speedtronic Mark V Steam Turbine Control System”, J. Kure-Jensen et al, GER-3687C, pp. 1-15, 1996.

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