Hi all,

we have to design a pressure vessel, which have a concentric conical reducer round to rectangular as bottom (with rectangular outlet-nozzle)
This reducer has the following dimensions Ø 2420/ □ 685 x 1422 mm x 704 height.

How can we design this one acc. ASME VIII Div.1?
Is it, for example, possible to devide it in round and plain areas, so that we can use App. 1 and 13?

Thanks in advance for responding.

Rainer

ASME Section VIII, Div. 1. does not contain specific rules for your special reducer, therefore, the rules of U-2(g) apply. FEA, with the acceptance of the AI, may only be the way to prove your design.

This reducer can be designed and can also be analyzed . But should one do it ?

A better approach would be to design a conical reducer and provide a circular cutout in the other side.

Transition pieces are used as a matter of course in bulk material handling. Usually made from 3 mm thick hot rolled sheet . In my opinion pressure vessel shops are not familiar with this construction.

Also I presume this reducer will handle some slurry . So you will need workmanship which of course is not defined .

I have one Figure which can show you how to design the reducer.
https://mail.qq.com/cgi-bin/download?mailid=ZL16066EYGPODHQNWVgQnSmFVJDw09&filename=%CC%EC%D4%B2%B5%D8%B7%BD%D5%B9%BF%AA%CD%BC%BB%AD%B7%A8.gif&sid=Z975uwPDfEvPJzd7&action=view
i try to load my photos,but failed, i have no idea how to attach my photo, you can try above link, if it works. if not, please emil me, i send you the photo by email, my email is chen.hongshen@yahoo.com

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