VIBRATION MEASURING DEVICE FOR ROTARY MACHINES, VIBRATION MEASURING METHOD FOR ROTARY MACHINES, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a highly precise vibration measuring device for rotary machines, vibration measuring method for rotary machines, and program.;SOLUTION: A vibration measuring device for rotary machines is equipped with a time difference calculating unit 6 that calculates the time difference ΔT between the passage time of detection of turbine blades 111 by a non-contact sensor 3 and the passage time of the turbine blades 111 in a reference state stored in a memory unit, a vibration amplitude calculating unit 7 that calculates the vibration amplitude X_B of the turbine blades 111 on the basis of the peripheral velocity V_B of the turbine blades 111, the vibration velocity V_S of the non-contact sensor 3 detected by a small sensor 4 and the time difference ΔT calculated by the time difference calculating unit 6, and a vibration calculating unit 8 that calculates the vibration of the turbine blades 111 on the basis of the vibration amplitude X_B calculated by the vibration amplitude calculating unit 7 of the turbine blades 111.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT