Well, I willl discuss with ops. The system which is located at a steam plantis that the pumps pump oil emulsion from a tower where the emulsion comes from oil well to a process plant which is located around 20 km away. The system seems a bit complicated. Thanks!
Thanks! I will review all the system when I create the system curve, and also will discuss with ops about the downstream real requirement, such as flow and pressure.
We only have the pump curve with constant speed as attached. I will make the curves at different speeds. Thanks,http://files.engineering.com/getfile.aspx?folder=c468d4c4-79ff-4c3d-9e9c-62506ac290b0&file=Pump_curve.pdf
Thanks LittleInch, it looks you encourage me to creat the system curve and I will try . It might be more apparent to over reveiw whole system. To trigger this issue is that we have had mechanical seal and bearing failures and we figure out vibraiton is one of the factors, and then we reviewed...
Thanks to everyone again! We don't have any control valve installed on pumps discharge piping which is different from the pump with constant speed system. If I try to avoid creating (calculating)the system curve which seems a little complicated and I have never done it before, and also if Ops...
Thanks Artisi and georgeverghese! The pumps have had some vibration but I don't exactly know what were the running condition during that happened but I will talk to the vibration technicians. The document of original design seems not easily to be got it as it is a old plant but I will try. But...
I will try. But the system curve is most suspicous which I worry about the pump could not be run at 100% speed as too much flow than rated. Thanks BigInch!
I appreciate so much here for your kind response and help! Sorry I couldn't provide some pump ops data last weekend as they are at my office. Yes, I used to witness once locally that the local suction pressure gauge showed 80 psi and discharge pressure gauge showed 250 psi. DCS recorded flow was...
I newly joined here and hope to get help. We have three identical centrifugal pumps with VFD parallelly installed in a system. The pumps are designed and tested at 560 M^3/hr @ 100% speed (1750 rpm); But these pumps could get 676 - 699 m^3/r at only 58.9-86.7% speed. What did it happen? Does the...
