How should a reboiler be installed on a steel platform?
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How should a reboiler be installed on a steel platform? We simply weld the lugs to the steel beams. The reboiler is designed with expansion rings, but this allows only the lower part of the reboiler to expand and contract freely, while the upper part remains fixed. Previously, we used threaded connections between the lugs and the steel beams; now it’s welded instead. Both methods cause damage to the structure of the steel beams. I’m very confused about how to solve this problem and hope someone experienced can offer some guidance – is there a perfect solution?
Whether it is a steel or concrete beam, equipment is generally not welded to its foundation; only bolts can be welded firmly to the beam. The equipment is fixed with bolts; otherwise, it cannot be removed for maintenance! ! ! ! ! ! 11
Do not weld; the expansion joint should be located below the lug
We first weld a gusset plate to the steel beam, and then weld the reboiler lugs
Excuse me, on the 3rd floor – can’t the expansion joint be placed on the support ear? Besides allowing the expansion joint to expand freely, what are the other reasons for this?
This is a problem that poses no difficulties. The summary is as follows: It is best not to weld the reboiler supports to the steel beams; bolts can be used or the supports can simply be placed in place. Since it is a static device, welding is avoided because reboilers usually require maintenance, cleaning, replacement, and so on. Moreover, whatever method of installation is used, the damage to the steel beams is negligible. The steel structures designed by engineering firms have excessive margin; combining bolt connections with additional welding to reinforce the steel plates results in serious waste of steel, with a safety factor of 3000%. If you don’t believe me, go and ask a real steel structure manufacturer
What was said upstairs makes sense; a reboiler is a static device, and its leg supports and steel frame should be connected using bolts
The expansion loops in the reboiler design are used to eliminate stresses in the tube side and shell side; they have no relation to the stresses experienced by the tower itself. Generally, if connected pipes (large enough) are used to support the tower directly, it may not be necessary to use additional expansion joints. If the pipes are not sufficient to support the reboiler, then expansion joints must be installed, placed below the supports, and the size of these joints can be determined using CaesarII
A common method is to install a square steel structure below the lifting lugs, with the support brackets resting on this steel structure.