Vibration of multi-stage centrifugal pumps
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Guys, in one of our plants, the pump used for converting residue oil into liquefied gas has a support bearing at the front end and a graphite sleeve at the rear end. We have checked the axis alignment, the coupling, as well as whether the shaft is bent, and everything seems to be fine. The vibration levels of the pump are 9.0 in the horizontal direction and 3.1 in the vertical direction; we just can’t figure out the cause. Could you guys share some experience on this? I will respond promptly regarding any additional parameters needed
Start by checking the anchor bolts to see if there are any bolts that, although tightened, have their threads already in place and thus are not actually firmly connected to the foundation. Check the level of equipment installation, the dynamic balance of the impeller (for any signs of scaling), and whether the operational procedures comply with the specified parameter conditions. Such as suction pressure, cavitation, etc.
Okay, thank you. We will take your advice into consideration