BLADE VIBRATION MONITORING DEVICE AND BLADE VIBRATION MONITORING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a blade vibration monitoring device capable of accurately performing monitoring of blade vibration using a Campbell diagram created via vibration measurement of a bearing.;SOLUTION: A blade vibration monitoring device comprises: a vibration data acquisition part for acquiring vibration data of a stationary coordinate system by measuring blade vibration of a rotary machine having a rotary blade via a bearing for supporting a rotational axis of the rotary blade for each rotational frequency of the rotary blade; a coordinate system conversion part for performing coordinate conversion of the vibration data of the stationary coordinate system into vibration data of a rotational coordinate system; a frequency characteristic calculation part for calculating frequency characteristics of the vibration data of the rotational coordinate system; a Campbell diagram data generation part for generating diagram data of a Campbell diagram having a plurality of vibration points plotted on a graph on the basis of the frequency characteristics of the vibration data; a vibration mode classification part for classifying the plurality of vibration points into corresponding vibration modes by executing cluster analysis to the plurality of vibration points; and a regression line determination part for determining a regression line of the vibration points for each vibration mode.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT