Calculation of horizontal tank saddles
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Recently, a horizontal vessel was designed, with a cylinder that is a tapered cylinder of types 3800 and 3200; the lower parts of these cylinders are at the same level. When using SW6 for calculations of this type of equipment, how should the saddles be calculated? One saddle corresponds to the 3800 type, and another saddle corresponds to the 3200 type. I would appreciate the guidance of those with experience. Thank you!
You can search on Baidu; I think it was the SW6 development team or someone else who provided explanations on this topic, but I’ve forgotten whether such a device is designed to be mounted on an eccentric cone.
It seems not easy to calculate. I’ve done it before for reboilers, but the diameters encountered were not very large, so I haven’t calculated it before. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=928133
It is not placed on an eccentric cone; both saddle seats with diameters of their own are cylindrical, with an inclined cone in between.
This is straightforward – you just need to create separate drawings for the small-diameter saddle, taking into account its thickness, material, and corner angles, using the specifications for the large-diameter one. We’ve done this many times before, and no one has ever raised any issues
In the end, it is all calculated based on the large diameter.