Pump Pulsation Damper Required
Pump Pulsation Damper Required
(OP)
I'm installing a positive displacement pump in chemical injection service (offshore facility). How can i determine if a pulsation damper is necessary?
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Pump Pulsation Damper Required
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RE: Pump Pulsation Damper Required
What I mean is that the number of pistons is not a trivial information on this one as multiple pistons pumps will exhibit smoother pulsations.
RE: Pump Pulsation Damper Required
A simplex , long stroke, low RPM pump will have highest pulsation. If your injection rate is relatively high, using a multiplex pump may reduce the pulsation to an acceptable level without a dampener. Of cause the will also be more costly.
RE: Pump Pulsation Damper Required
For piston type pumps, it is common to oversized the piping to minimize pumping problems.
RE: Pump Pulsation Damper Required
Simplex and duplex piston/plunger/diaphragm pumps must have a pulsation dampener.
Triplex pump should have a a pulsation dampener.
Quintuplex and more do not need a pulsation dampener.
Peristaltic pumps often must have a pulsation dampener.
Tell us what the flow and the pressure is.
RE: Pump Pulsation Damper Required
Thanks.
RE: Pump Pulsation Damper Required
Use a hose with a smooth interior, not a ribbed hose. The ribbed hose has significantly higher head loss.
RE: Pump Pulsation Damper Required
RE: Pump Pulsation Damper Required
Take a glance to this, it could help in the future
http://www.pump-zone.com/articles/225.pdf
RE: Pump Pulsation Damper Required
RE: Pump Pulsation Damper Required
In my opinion installing a vessel (accumulator)in the discharge line will act as a damper.
Good luck
RE: Pump Pulsation Damper Required
Rotary P.D. pumps such as screw, progressive cavity, lobe, peristaltic, gear pumps emit almost no pulsations, therefore do not require dampeners.
Reciprocating P.D. pump such as piston, plunger, axial piston, diaphragm,etc. transfer the rotational motion of the driver into back and forth motion in the fluid end. The more pistons/fluid compartments there are, the smaller the pulsation is from each.
As prior posters said, the answer to your question is dependent upon the individual service and installation. If your system is robust enough to withstand pulsations, then don't use a dampener. If the pipes start shaking bolts loose, then use one.
Pulsations will not hurt the pump, only the system or process.
RE: Pump Pulsation Damper Required
Pulsations can hurt the pump too as the pulsations also act backwards to the pump itself.
Peristaltic pumps are rotating pumps but due to their design with one or two shoes which squeeze the hose they can be seen as a simplex single or double acting piston pump as far as it concerns the pulsations. They often need a pulsation dampener.
RE: Pump Pulsation Damper Required
You are correct sir; yes some rotaries can require dampeners. Mine was mostly a general statement and is not absolute; maybe just 90% of the time.
But you dont have to call me DuMmac over the deal, come on man, it is Friday after all. This could drive me to drink; and very soon I might add.....
RE: Pump Pulsation Damper Required
RE: Pump Pulsation Damper Required