Surge Protector / Buffer Between regulator and valves

[matkenmd]

I'm trying to size a fluid buffer or surge protector for a small hard piped manifold which has a 1500psi output regulator and a number of small valves.

We've experienced (in the past) regulator jacking (rapid open/close cycle) when there isn't enough fluid capacitance in the circuit between the source (regulator) and the operator.

I could simply put in the largest bladder accumulator that would fit, but I'd like to be more discerning. Is there a rule of thumb or simple calculation to put me in the ballpark?

 

[MikeHalloran]

I'd be inclined to try a spring loaded piston type accumulator, with a volume on the order of one or two valves' volume. Or a very small bladder accumulator.

I don't know of any sizing rules.



Mike Halloran
Pembroke Pines, FL, USA

 

[PNachtwey]

I wrote this article on accumulator sizing for hydraulics and pneumatics.

http://www.hydraulicspneumatics.com/200/Issue/Article/False/43954/Issue

Peter Nachtwey
Delta Computer Systems

http://www.deltamotion.com

 

[matkenmd]

So...no formal methods for sizing pulsation dampers?

 

[IceStationZebra]

Didn't Peter's article have enough formulas for you?

If you want to do it the easy way check out Parker's online catalog.
parker.com/literature/Literature%20Files/ACCUMULATOR/CAT/ENGLISH/1630007.pdf

ISZ

 

[hydtools]

What do you mean by formal?

See this:

http://www.stauffusa.com/customer/stcorp/catalog/Catalog_PDFs/Accessories/Accum_SizingData.pdf

Ted

 

[hydtools]

Follow this article:

http://www.fpweb.com/200/IndZone/MarineOffshore/Article/False/7225/IndZone-MarineOffshore#scene_1

Ted