How to deal with vibration in the pump outlet pipeline?
Thread Content
The unit is currently equipped with a low-flow centrifugal pump with an outlet flow rate of around 25 tons. Due to the large number of bends in the pump’s outlet pipeline during design, significant vibration occurs in this pipeline, which in turn causes vibration in the pump itself. At present, the only solution is to add iron plates under the pump’s outlet support frame; adding shock absorbers is not considered for the time being. I am seeking other effective ways to address this issue.
Try reducing the flow rate at the pump outlet; if there is no vibration, consider enlarging the outlet pipe. Diameter.
Thank you, I’ll give it a try.
In such cases, the pump outlet pipeline may not be installed properly, which can result in air inside the pipe; this leads to excessive vibration during operation. On the other hand, the pipeline is reinforced to increase vibration damping.
With so many elbows, will the resistance be too high? Compared to the pipeline, the outlet pressure of the pump is higher. The ultimate solution is still to optimize the pipeline. Can we add a few more supports to give it a try now?
I don’t think it’s due to the large number of elbows; more elbows actually result in better flexibility. The process parameters should also be analyzed. 1. The NPSH value may be exceeded. 2. It’s possible that the amount of material drawn in at the inlet is insufficient. We’ve observed that in several pumps, vibration is high at the end of the suction pipe when they are in operation； 3. Check the mechanical components as well, such as anchor bolts, couplings, and bearings.
The frequency generated by the operation of the pump and related pipelines is similar to the inherent frequency of the pipelines, resulting in resonance.