Axial Vessel flanges
Axial Vessel flanges
(OP)
I have a vessel thats essentially going to be a large soup can. The vessel is going to be split longitudinally into halves, so I need flanges that run, in essence, the length of the vessel. Are there any design aids or resources out there?
Thanks in advance,
Michigander.
Thanks in advance,
Michigander.





RE: Axial Vessel flanges
h
Bottomline is you'll need FEA.
RE: Axial Vessel flanges
-MJC
RE: Axial Vessel flanges
Its a 36" dia x 84" lg rated at 300 psi. There is a valid process reason to flange it this way. For other reasons, we are looking at building a unit length mock up so I'd like to try and get close with hand calcs.
Thanks!
RE: Axial Vessel flanges
I have seen some papers on the design and application of this product but I don't know if there is a design standard and if there is the end closure is still the problem.
If you purchase these clamps from any manufacturer they are not cheap so you can expect to sink a few dollars in the design and build. As stated above FEA is almost must have especially for the end closure.
http://plidco.com/public/products/split_sleeve.php
Addenda:
There might be a way to add a head by using an ASME head with a long flange section, I'm thinking.
RE: Axial Vessel flanges
Thanks for all the help...
Michigander
RE: Axial Vessel flanges
However you'll need to account for a major difference with respect to ring flanges: with these the bending stress in the wall is secondary, as the flange resists the loads alone. In the longitudinal flange the flange is not autonomous in resisting bending, so the bending stress in the wall becomes primary.
Likely ribs will be required, as bending will tend to raise thicknesses too much, so proving conformance to code might become a nightmare. The use of clamps instead of bolts might help in reducing the lever arms and the thicknesses.
The intersection of longitudinal and circumferential flanges is more a problem of tightness, than of calculation (unless of course you need to check to fatigue, good luck in that case...)
prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads
RE: Axial Vessel flanges
Michigander