Issues with special heat exchangers and core-pulling types
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What type of heat exchanger is this? Are there any issues with the drawings? The tube sheet and shell have already been welded together – how can it be cleaned by core removal? Thank you!
If there is no pressure in the shell side, simply make a cut in the shell side and add a flange.
It is indicated on the drawings that cleaning is not possible without removing the core, and one flange is missing
It is recommended to first disassemble the end cover flange to see what the actual installation structure is like. If it is to be welded as a whole, it is recommended to make a mark to maintain the original structure length, with flange connections added. Stand the cylinder upright and secure it, then pull it out. It is best to consult the equipment manufacturer for reference.
There are no issues with the design of the drawings, which indicates that there is no need to consider cleaning for the heat exchanger’s functionality; its welded structure is also durable. It seems to serve a function similar to that of a steam generator, and this type of structural design can be considered for high-pressure equipment where there are large temperature differences.
In this heat exchanger, the tubes in the tube side and the tube sheet are welded together; when it is removed, the tube side comes off as well. If it were only the shell side that is involved, scaling would occur, but there is no problem with removing it for cleaning. With this design, gaseous media can be used preferentially in the tube side
No, I misread the previous reply; it should be possible to wash the tube side, while the shell side should use a medium that is less prone to scaling
The tube bundle cannot be cleaned or removed; neither the tube side nor the shell side can be cleaned. To carry out cleaning, the equipment structure needs to be modified
It looks like an evaporator; the drawings aren’t very accurate. How is the right-side tube sheet and shell sealed? It might be a floating head design