Pulsation stabilizer for progressive cavity pump.

[alpha0125]

How do we size the pulsation stabilizer for progressive cavity pump? When i contacted vendor they ask me for the bore and stroke information. It is PD pump but does not have piston.
Sorry if this is the dumb question but i am recently graduated, new hire engineeer.

 

[bimr]

Here is the method. You need the pump displacement.

http://www.primaryfluid.com/pdf/Accupulse_PDF/AccuPulse-Dampener_Sizing_Guide.pdf

 

[Compositepro]

One of the main advantages of a progressive cavity pump is that there is almost no flow pulsation. You do not need a pulsation damper. Bore and stroke are relevant to reciprocating piston pumps. I think someone is playing a trick on you.

https://en.wikipedia.org/wiki/Progressive_cavity_pump

 

[alpha0125]

I thought the same thing. The progressive cavity pumps are almost pulsationless. However, Desgin review team does not know much about the progressive cavity pumps. I was trying to double check.
Thank you all for your help.

 

[Strong]

Google: "progressive cavity pump pulsation damper"
You will find a lot of information including an Eng-Tips discussion in 2011!

Walt

 

[Compositepro]

Yes, a surprising number of hits, and none of them added any useful information. The previous Eng-Tips thread said the same thing I said here.

 

[zdas04]

First, the pump is called a Progressing Cavity Pump, not Progressive. Second, they don't need pulsation dampners.

David Simpson, PE
MuleShoe Engineering

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist

 

[bimr]

The inventor of the pump was named René Moineau. The firm that he founded, PCM uses the words progressing and progressive interchangeably to describe this pump. There is no reason to be pretentious.

 

[zdas04]

The way the pump works is the cavities progress up the shaft. It is not progressive. It is progressing. I simply hate descriptive language being diluted by dullards who have never heard the proper term so they assume that it is actually a more common term. If that is pompous then I despair for our profession.

David Simpson, PE
MuleShoe Engineering

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist

 

[DubMac]

Why don't we just call it a pigtail pump and be done with it.

 

[hydroman247]

zdas04, why not jump into the axial flow pump and tell them to stop calling it a centrifugal pump

 

[TenPenny]

"There is no reason to be pretentious."
...
" If that is pompous then I despair for our profession"

I fear for our profession when some cannot distinguish between being pretentious and being pompous.

As my kids would say, LOL.

 

[zdas04]

Oh goody, what fun. I hope you guys are just as happy when a client says "the compressor is going from 2 psi to 20 psi and the temp is too low" Or "The flow rate is 100 CFM at 200 psi" etc. As the language gets less precise, the ability to diagnose problems, design equipment, or optimize an operation gets progressively more difficult.

Laugh all you want boys, but if we don't expect and demonstrate precision no one else will either. As for me? I'll accept my role as the butt of this particular joke and back away quietly.

David Simpson, PE
MuleShoe Engineering

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist

 

[TenPenny]

"Laugh all you want boys, but if we don't expect and demonstrate precision no one else will either. As for me? I'll accept my role as the butt of this particular joke and back away quietly."

If you're calling for everyone to demonstrate precision, best start with oneself, no?

 

[MartinLe]

In German they're called Exzenterschneckenpumpe, which would translate as excentric screw pump, which to me always sounds a bit dirty.