pump 3

[afsaneheng]

hello
for designing a plunger pump for transferring crude oil , i need some theoretical information about these kind of pump. can anybody now how can i calculate optimum distance between plunger rod and cylinder that plunger move in it?( i think i calls tolerance)
i really appreciate you if you can help me

 

[micalbrch]

It all depends upon flow and pressure. Plunger diameter, plunger stroke and speed determine the flow. And the pressure in combination with the plunger diameter is of importance for the gear load. Why do you want to design something that you can purchase from various experienced vendors?

 

[EmmanuelTop]

Read the attached article from the A&M Pump Symposium:



Dejan IVANOVIC
Process Engineer, MSChE

 

[afsaneheng]

dear EmmanuelTop:
thank you so much for your help, but i can't get your attached file. i really appreciate you if you can send it again.

dear micalbrch:
thank you for your help, i want to design it because of our special conditions. with this regards i need to theoretical basis for having optimum performance such as best efficiency and less losses.

i attached the schematic of tolerance, i want to calculate

 

[EmmanuelTop]

afsaneheng, the article is also available on the page:

http://turbolab.tamu.edu/proc/pumpproc/P24/06-tackett.pdf

Dejan IVANOVIC
Process Engineer, MSChE

 

[micalbrch]

Dear Afsaneheng: Not sure if I understand what you really need. In your initial post you wrote "how can i calculate optimum distance between plunger rod and cylinder that plunger move in it?" How long is the stroke length of your pump? That is more or less the dimension you are looking for, unless I misunderstand you. Do not care that much about efficiency and losses. It is more difficult to get it work so that it operates without trouble.

 

[afsaneheng]

dear EmmanuelTop:
thank you for your help, i received the article and i will read it, i hope it help me.
thank you again.

dear micalbrch:
i have no problem with stroke length and as i showed in attached picture i need to know what is the best distance between plunger rod and plunger cylinder, in part that i distinguished, for better or optimum performance. it is important to me because when the plunger move in, amount of liquid remain at the end and i want that with considering an optimum tolerance between plunger rod and cylinder, lead the fluid to the outlet and with focus on having little noise.

 

[EmmanuelTop]

What you probably need is API 647 plunger pump for crude oil production service. Why don't you get together with your Rotating Equipment specialist and contact reputed manufacturers and discuss this particular application directly? This seems like the best approach to me. Eventually you'll have one of those pumps purchased and installed, at the very end. See:

http://www.flowserve.com/files/Files/Literature/ProductLiterature/Pumps/ps-70-1-e.pdf

http://www.fmctechnologies.com/~/media/FluidControl/Flowline/pdfs/ReciprocatingPumps-Dec08.ashx

http://www.spx.com/en/assets/pdf/CUP-03-RECIP-UK WEB.pdf

http://www.rampumps.co.uk/

Dejan IVANOVIC
Process Engineer, MSChE

 

[EmmanuelTop]

API 647, sorry for typo.


Dejan IVANOVIC
Process Engineer, MSChE

 

[EmmanuelTop]

API 674, sorry for another typo. The keyboard seems to be upside down today

Dejan IVANOVIC
Process Engineer, MSChE

 

[afsaneheng]

Of course, for this work we uses standards such as API and ANSI and even pump handbooks. but first our team should have a good simulation of conditions and parameters,because of our special conditions, then investigate the offer of consulting or manufacturer company.
i really appreciate you for your help and kindness.

 

[EmmanuelTop]

Assuming that you guys know what you're doing and if you want to play with all these calculations, here is one interesting paper: "PLUNGER LEAKAGE AND VISCOUS DRAG FOR BEAM PUMP SYSTEMS" published in 2001:

https://repositories.tdl.org/ttu-ir/bitstream/handle/2346/13650/31295017999573.pdf?sequence=1

and another presentation on pump clearance design for sucker rod pumps:

http://www.alrdc.com/workshops/2012...sentation --- Echometer --- Pump Slippage.pdf

Dejan IVANOVIC
Process Engineer, MSChE