CENTRIFUGAL PUMPS AND VFD pumps
CENTRIFUGAL PUMPS AND VFD pumps
(OP)
Hi friends I am working in oil -chemical industry. Actually we r using 2 centrifugal pumps of 500 m3/ hr capacity each. Its discharge pressure goes up to 8 bar before the filter. Due to 8 bar we often have problem of leak in filter cover gasket.pressure releif valve lifting. So we throttle t discharge valves to reduce pressure to 4 bar and run 2 pumps. I THINK if i change this centrifugal to VFD pumps its possible to use one pump only also is it efficiency in terms of capacity and electrical consumption. Thanks





RE: CENTRIFUGAL PUMPS AND VFD pumps
A better solution would be fix this gasket leakage / PSV lifting problem at the filter. That would be easier than to fit VFD to these 2 pumps.
RE: CENTRIFUGAL PUMPS AND VFD pumps
Your post doesn't make sense. If you throttle the pump to 4 bar then your flow also falls to ??. Adding a second pump also presumably throttled to 4 bar won't add any flow.
First off work out what pressure does your downstream system need to flow at whatever flow you want.
Only then can you start fiddling with the pumps, but it sounds like something isn't right if your filter leaks and the pressure relief valve lifts (!)
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: CENTRIFUGAL PUMPS AND VFD pumps
RE: CENTRIFUGAL PUMPS AND VFD pumps
I used to count sand. Now I don't count at all.
RE: CENTRIFUGAL PUMPS AND VFD pumps
A centrifugal pump can have a VFD motor on it so I'm confused what you are asking.
Charlie
www.facsco.com
RE: CENTRIFUGAL PUMPS AND VFD pumps
RE: CENTRIFUGAL PUMPS AND VFD pumps