Skip to main content

Reply to "Subsynchronous vibration multistage high pressure centrifugal pump"

@Registered Member Hey Ralph, thanks again for replying. I attached the wrong files, my bad. Attached the sectional drawing. For the trouble in viewing images have you try to re-login?

For the spectrum, as I could tell there is no sidebands, at first I thought I saw sidebands too, but turns out it is subsynchronous peak at 69 Hz, pump 1X is at 88.9 Hz. For change in operation, as you can see in my other attachment files, there is change in flow and pressure but it was affected by the speed and I think the best efficiency point is not moving much. Also highest value vibration was at its design speed (88.9 Hz)

I haven't been able to go to site to view it myself, I only analyzed data that was provided to me, but I got information that the vibration is at its highest is when operating at full load (design speed operation)

Attachments

RM
×
×
×
×