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Is the bottom support type a supported bearing according to JB/T4712.4?
Yes, it is a Type B bearing················
This type of support is not advisable; to remove the tube box, the entire heat exchanger has to be taken apart.
Also, is it possible to directly weld the head and flange in the lower tube box? Where can I find standards for such a structure? Thank you
The drawing structure is relatively uncommon, but it is still feasible
Reply to 2# zhangle928: According to JB/T4712.4-2007, P117, 1.2, the nominal diameter for trial use of support-type bearings ranges from DN800 to DN4000. Mine is DN450 – what should I do?
Hehe, it’s rare; earphones are more common usually
This post was last edited and replied to by zyywushi1983 on 2010-7-1 23:13. Reply 9# wangjinbo66: Support brackets are not recommended; 1) they are difficult to remove, 2) they affect the thermal expansion of the entire equipment, and 3) the thickness of the lower end cap may need to be increased. Lugs are recommended instead. . . Shouldn’t there be an exhaust vent on top of that cover as well?
Ear-type supports should still be chosen, as they also facilitate the removal of the pipe box. It is possible to weld the end cap directly to the flange, but certain requirements must be met; the provisions in HG20583 can be referred to. It’s also necessary to add an exhaust vent, as mentioned on the 10th floor.