| 摘要 |
FIELD: machine building. ^ SUBSTANCE: disclosed here method of diagnostics of self-oscillations of turbo-machine impeller consists in measurement of case vibration and in recording moment of self-vibration occurring upon reaching specified value of ratio of change of case vibration at diagnostics frequency to change of frequency of impeller rotation. As a feature distinguished from known, here there is observed the moment, when case vibration at diagnostics frequency, not multiple to rotation frequency of the impeller, reaches a specified threshold value; this is registered as the moment of self-oscillations occurrence. ^ EFFECT: raised efficiency and reliability of diagnostics of turbo-machine impeller self-oscillations. ^ 3 cl |
