Pipeline resonance elimination
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Please give some advice. The pump experiences significant vibration at its inlet and outlet areas, with the vibration amplitude reaching 15 microns. It has now been confirmed that the pump vibration is caused by vibrations in the imported pipeline. The imported version is equipped with bellows shock absorbers. How to eliminate pipeline vibration without changing its structure. Thank you????
Personally, I think it’s due to process or equipment issues; if the vibration level at the inlet is higher than that at the outlet. A major reason is that the pipeline is too thin. If the difference between the two isn’t significant. Look for equipment-related factors
Why are all the pipe fittings so close to the pump inlet?
For inlet and outlet reducers, horizontal installation should be considered; in addition, check the installation condition of the bellows on the inlet and outlet pipelines, especially the setting bolts.
Looking at the photos, it’s not a new pump; since it has been in use for some time now and is experiencing increased vibration, why assume that the vibration must be caused by the pipes? It is recommended to start by checking aspects such as coupling alignment and the pump rotor.
Are you sure the fundamentals are fine: foot bolts, coupling alignment, rotor bearings, and medium temperature? Has everything been taken into account? Nothing needs to be ruled out one by one.
All the tightening screws of the bellows should be loosened to reduce the impact of the pipeline on the pump
It is 1.8 at the wall penetration point, but 7.5 at the bellows area
Another pump was installed, but the vibration level remains the same