High vibration detected at the pump drive end during centrifugal pump startup
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I would like to ask the teachers: For a pipeline oil feeding pump that transports refined oil, the drive side of the pump experiences high vibration levels when the first oil feeding pump starts (this occurs sometimes but not always); once the pump is running steadily, all parameters are normal. What could be the cause of this?
Vibration may be greater during startup than while it is running; it might be due to exceeding the critical speed. I’m not sure what your critical speed is, haha. The fluid flow might also become unstable, but as long as it functions properly when in use, that’s fine.
May I ask how to determine the critical speed of a pump? What to do when the pump exceeds its critical point