×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Pulsation stabilizer for progressive cavity pump.

Pulsation stabilizer for progressive cavity pump.

Pulsation stabilizer for progressive cavity pump.

(OP)
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.

RE: Pulsation stabilizer for progressive cavity pump.

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_p...

RE: Pulsation stabilizer for progressive cavity pump.

(OP)
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.

RE: Pulsation stabilizer for progressive cavity pump.

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

Walt

RE: Pulsation stabilizer for progressive cavity pump.

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.

RE: Pulsation stabilizer for progressive cavity pump.

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

RE: Pulsation stabilizer for progressive cavity pump.

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.

RE: Pulsation stabilizer for progressive cavity pump.

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

RE: Pulsation stabilizer for progressive cavity pump.

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

RE: Pulsation stabilizer for progressive cavity pump.

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

RE: Pulsation stabilizer for progressive cavity pump.

"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.

RE: Pulsation stabilizer for progressive cavity pump.

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

RE: Pulsation stabilizer for progressive cavity pump.

"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?

RE: Pulsation stabilizer for progressive cavity pump.

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

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources