Guide Condition Assessment Module For A Valve And Actuator Monitoring System
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United States of America Patent
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Aug 31, 2016
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Aug 31, 2016
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Abstract
The present application provides a method of evaluating valve spindle leakage and guide deformation in a turbine by a data acquisition system. The method may include receiving a number of operating parameters from a number of sensors, generating a friction hysteresis curve based on the operating parameters, determining a friction characteristic based on the friction hysteresis curve, comparing the friction characteristic to previous friction characteristics, and altering one or more of the operating parameters and/or initiating repair procedures if the friction characteristic is increasing and/or exceeds a predetermined value.
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