I have just started working, and I haven’t been able to understand the concept of the resonance frequency of centrifugal compressors. Could some of you experienced colleagues help me out?
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When studying * in other places, their compressors do not allow the frequencies of 46.6HZ and 47.6HZ to be set; the operation manual states that these frequencies should be quickly skipped during the adjustment process. I would like to ask what exactly the resonance frequency of centrifugal compressors is:D Thank you
Put simply: resonance occurs when the natural frequency of the rotor coincides with the frequency of the external force (rotational speed). It is also called the critical speed. Therefore, the flexible rotor must pass through the critical speed quickly and smoothly. The critical speed of the rotor is determined through calculation and actual testing. When the stiffness of the rotor changes, its critical speed also changes. It is necessary to keep records of the vibration frequency each time the rotor is subjected to high-speed dynamic balancing. To avoid the critical speed during operation.