Regarding the vibration issue in the feed line of the hydrogenation high-pressure pump
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Hello everyone: The company has installed a new medium-pressure hydrogenation system, which has been in trial production these past few days. The main issue encountered is severe vibration in the outlet pipeline of the high-pressure feed pump. I would like to ask fellow sea users if there are any other ways to eliminate vibrations besides strengthening the pipes For example, adding buffer airbags to the pipeline. The flow rate of the high-pressure plunger pump is 60 m3/h, with a pressure of 1.5–4 Mpa during feeding. Thank you!
For the buffer sphere tank, it’s better to reinforce it
A positive displacement pump is used, and it’s advisable to have devices such as dampers at the outlet to cushion pressure fluctuations there. Reinforcement is an option as well, but it may lead to issues such as increased internal stresses in the pipelines and wear due to tightening.
The vibration in the inlet and outlet pipelines of our high-pressure hydrogen injection pump is also quite severe; it seems to be due to the check valves at the inlet and outlet of the plunger
Take the outlet flange apart and check to see if it is not aligned; vibration is severe when stress is present.
You can have the construction team take care of the welds
Thank you all for your responses. Reinforcing the pipes is also being carried out simultaneously, but it is likely to have little effect; I still prefer the option of adding buffers at the outlets to use inflation to mitigate pulses. I was wondering if anyone has any good examples of this approach. Thank you!
Many high-pressure piston pumps come equipped with dampers at their outlet, right? First, let’s rule out the possibility of residual stresses from installation. There was severe vibration at the outlet of our compressor; after considering all possible factors, the issue still persisted. Eventually, adding a flow-limiting orifice plate to the outlet flange resolved the problem.
Why is it enough to add a orifice plate? Is it to ensure a stable and even export flow? Will there be no more vibrations then?
I think it should be considered from a mechanical perspective; I’m not exactly sure about the details. This is all we can know at the operational level.