| 摘要 |
<p>PURPOSE:To simplify system configuration and perform life assessment and life monitoring with high efficiency by limiting the detection quantity to a reverse phase current from a current detector. CONSTITUTION:A low pressure turbine 10 drives a generator 12 rotationally via an axle 11. The output lines 14 of the generator 12 are connected to electric power system lines 15 and the currents thereof are detected by current transformers 16. The outputs of the current transformers 16a-16c are inputted to a reverse phase current operating device 20 of a monitor 18 for blade-axle torsional vibration. The reverse phase current operating device 20 detects and operates the absolute value and the duration of reverse phase current IZ based on the detection currents of the current transformers 16a-16c. This resultant values are inputted to a vibrational stress operating element 22 and a vibrational stress value is operated based on a vibrational stress data value sigmaZ from a data storing part 23. This value is fed to a life assessment operating device 25 and the operated life of a real machine is displayed on a displaying monitor 26.</p> |
