초록 ▼

A vibration diagnosis method and apparatus for rotary machines adapted for measuring the vibration of rotor shaft of a rotary machine, extracting the vibration component synchronous with the revolution of the rotor shaft from the measured vibration data, comparing the amplitude of the extracted vibr

A vibration diagnosis method and apparatus for rotary machines adapted for measuring the vibration of rotor shaft of a rotary machine, extracting the vibration component synchronous with the revolution of the rotor shaft from the measured vibration data, comparing the amplitude of the extracted vibration component with the amplitude of the overall vibration, analyzing the causes of the synchronous vibration component when the result of the comparison meets a predetermined reference, judging, in accordance with the result of the analysis, whether the vibration due to mass unbalance is attributable to an abrupt generation of mass unbalance or to a thermal bow of the rotor shaft, and displaying the result of the judgment. The analysis of the vibration component is made in real time or making use of data stored in the past.

대표청구항 ▼

A vibration diagnosis method for rotary machines comprising the steps of measuring vibration of the rotor shaft of a rotary machine; extracting from the measured overall vibration the vibration component synchronous with the revolution of said rotor shaft; comparing the amplitude of the vibration wi

A vibration diagnosis method for rotary machines comprising the steps of measuring vibration of the rotor shaft of a rotary machine; extracting from the measured overall vibration the vibration component synchronous with the revolution of said rotor shaft; comparing the amplitude of the vibration with the amplitude of the overall vibration; analyzing said synchronous vibration; judging the result of the analysis of the synchronous vibration component; and displaying the result of the judgement in a diagrammatical manner; said step of analyzing the synchronous vibration component including comparing the rate of change of said vibration component with a first value, and comparing the rates of change of amplitude of the vibration component at two adjacent points of time, while said step of judging includes a judgement as to whether a vibration attributable to an abrupt generation of mass unbalance is taking place.