FIELD: physics.
SUBSTANCE: in the method of detecting resonance oscillations of turbo-machine rotor blades, sensors are installed on fixed parts of the turbo-machine, the signal from the sensor is monitored, a component on the passing frequency of the blades if picked up from the signal, reduction of its amplitude when the rotation frequency of the rotor increases is monitored and presence of resonance oscillations, distinguished from the known, is determined. At least one sensor for pressure fluctuation of the stream is installed. The fall in amplitude of the component on passing frequency of the blade when the rotation frequency of the rotor falls is also monitored. Passing frequencies which are defined when increasing and decreasing the rotation frequency of the rotor are compared and presence of resonance oscillations is determined using the comparison results.
EFFECT: high reliability of detecting resonance oscillations of blades and wider field of use.
3 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CONDUCTING RESONANT TESTS OF WORKING BLADES OF TURBOMACHINE | 2018 |
|
RU2678511C1 |
| METHOD OF DIAGNOSTICS OF TURBO MACHINE IMPELLER | 2008 |
|
RU2395068C2 |
| METHOD FOR DIAGNOSING THE CONTACT OF THE IMPELLER BLADES AGAINST THE HOUSING WITHIN AN AXIAL TURBOMACHINE | 2022 |
|
RU2795805C1 |
| METHOD OF DIAGNOSING RESONANCE VIBRATIONS IN AXIAL TURBOMACHINE IMPELLER VANES | 2011 |
|
RU2451279C1 |
| METHOD FOR DIAGNOSING SELF-EXCITED VIBRATIONS OF WORKING WHEEL OF TURBO-MACHINE (VARIANTS) | 2005 |
|
RU2296970C2 |
| METHOD FOR DIAGNOSING CONDITION OF GAS TURBINE ENGINE | 2023 |
|
RU2812379C1 |
| METHOD FOR DIAGNOSTICS OF VIBRATIONS OF TURBOMACHINE WORKING WHEEL | 1997 |
|
RU2111469C1 |
| METHOD OF DIAGNOSING TURBOMACHINE IMPELLER VIBRATION | 2008 |
|
RU2374615C1 |
| DIAGNOSTIC TECHNIQUE FOR TYPE OF OSCILLATIONS OF WORKING BLADES OF AXIAL TURBOMACHINE | 2015 |
|
RU2598983C1 |
| METHOD OF DIAGNOSTICS OF OSCILLATIONS OF TURBOMACHINE IMPELLER | 2013 |
|
RU2511773C1 |
