The heat exchanger tube bundle broke at the tube sheet
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The students have a question; let’s discuss it together. In the U-tube heat exchanger, the tubes on the inner side of the tube sheet broke, mainly in the central area of the tube sheet; over 20 tubes were damaged. The preliminary analysis suggests that it was caused by erosion; let’s discuss the specific reasons together.
This is a regular shell-and-tube heat exchanger, and it should be attributed to a quality issue. A \"air hammer\" phenomenon may occur in the cooler, but based on the parameters, such a phenomenon should not arise. It’s probably another fake product. As can be seen in the diagram, the tube sheet end plates are fixed directly; such temperature difference stresses can lead to a lack of stress compensation. Hehe, you get what you pay for. Go to the manufacturer to seek recourse: lol
It is caused by quality issues as well as problems related to the operating conditions.
It’s a double-pipe shell and tube heat exchanger; I think the thermal stress was too high, which caused it to break
Expert, it’s just that the manufacturer has gone bankrupt! ! I’ve learned it, but how can I figure out the parameters?~
Could you give some more specific guidance? Thank you
Look at this cooler from the perspective of pressure and temperature. This parameter is based primarily on the phase changes of water. Take a look at the schematic diagram of a standard shell-and-tube heat exchanger: the tube bank and the shell-side sleeve are separate components, which is designed to reduce stress-induced damage to the entire unit. Now, to save materials and simplify the manufacturing process, the shell side and the tube bank are integrated into one unit. When the temperature difference is small, this approach works; but when the temperature difference is large, it can lead to damage to the equipment due to excessive stress.