Question: The internal structure of the blister pack
Thread Content
I’m just working with pure theory; I’m not on the production floor, so I’m not very familiar with some of the equipment. I’d appreciate it if you could give me some advice. For example, regarding the bubbles on the distillation bubble cap trays, it has been impossible to find a diagram showing the internal structure of these bubbles; only these two types of diagrams are available. I would like to ask: In Figure 1, what is the purpose of that inclined tube extending downward from the top of the bubble cap? Is it used to secure the bubble cap? In Figure 2, it seems that the bubble sheet is fixed by the bolt in the middle; below that bolt is an air vent. How is it secured? In this case, the inclined tube shown in Figure 1 should not be necessary, right?
Yes, after emerging from the lift pipe, the gas flows downward along the walls of the bubble cap, passing through the liquid layer; this creates an upward force on the bubble cap, which needs to be secured, otherwise it will be blown over.
The middle bolt is welded to the lift pipe; after the bubble cover is installed, it is tightened with a nut