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360 degrees equal pressure?

360 degrees equal pressure?

360 degrees equal pressure?

(OP)
Hello,

My name is Darren, new to the forum, I'm trying
to figure out how to apply equal pressure (around 40psi)
around a cylinder. Equal pressure 360 degrees around is
fundamental to the design, by this i mean bearings
cannot be used; also,it has to work for different
sized pipes without adjustment, I've thought of maybe
using flexinol? Any thoughts?

RE: 360 degrees equal pressure?

Probably going to need a bit more than that, how big a cylinder, or what sizes of pipe? 2 inch, or 36 inch? Does it have to be exactly 40 psi? Is that the needed external pressure, or is that delta p between inside and out? If you pull a vacuum on the interior does it accomplish the same effect? Is that gauge or abs? What is the point?

-The future's so bright I gotta wear shades!

RE: 360 degrees equal pressure?

That does seem pretty vague.  You could make a set-up like a hydraulic cylinder and apply all the pressure you want to.  Submerge it in a 100' of water, or put in pressurized container and it should do the same.  Does it matter if pressure is applied to the ends as well?

RE: 360 degrees equal pressure?

Put it in a bag and connect it to a vacuum pump.  You'll get 10 psi easily.

RE: 360 degrees equal pressure?

(OP)
I mean like rollers, rolling 360 degrees around the pipe
with no openings, and making the ring size bigger and smaller, rollers roll along the outside of the pipe,

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