Method of sympton diagnosis by monitoring vibration of shaft...

Details Method of sympton diagnosis by monitoring vibration of shaft... Method of sympton diagnosis by monitoring vibration of shaft...

G - Physics

01

M

73/165

G01M 1/02 (2006.01) G01H 1/00 (2006.01) G07C 3/00 (2006.01)

Patent

CA 1155684

ABSTRACT OF THE DISCLOSURE A method of symptom diagnosis by continuously detecting vibration of the shaft of a rotary machine and monitoring a signal indicative of detected shaft vibration for the diagnosis of the operating condition of the rotary machine. In the method, a symptom of unusual operation of the rotary machine is diagnosed. The rotation speed range of the rotary machine is classified into a safety region, an alarm region and a trip region depending on the level of the shaft vibration signal. According to the disclosed method, symptom diagnostic regions are established at time intervals of a symptom diagnostic period, and whether or not the level of the detected shaft vibration signal deviates from that of the symptom diagnostic regions is continuously monitored for the diagnosis of a symptom of unusual operation of the rotary machine.

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