I want to build my own liquid nitrogen Dewar. Could you please advise me on how to do it?
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Since many specifications do not meet my expectations, I want to build a liquid nitrogen tank myself, but I lack the technical skills. If I don’t go to a manufacturer and do it myself, what should I prepare?
It is inherently non-standard and can be designed based on specific data; there are no fixed specifications. We produce models ranging from 15L to 80L. If you’re preparing it yourself, then draw the diagrams; the main things to consider are the insulation requirements, the placement of pipe ends, and the length-to-diameter ratio.
If I do it myself, would I also need equipment like bending machines and such?
Do you have the necessary qualifications for handling pressure vessels? Without such qualifications, only devices that are not under pressure can be used; using liquid nitrogen in this way carries less risk. Using pressurized nitrogen, on the other hand, is dangerous. If you decide to build it yourself, find diagrams and instructions from existing manufacturers as a reference. The safety accessories must be reliable, otherwise the pressure won’t be able to be released and it could lead to an explosion
What does it mean to do it by oneself? Design it yourself, manufacture it yourself? If you have a company with the necessary manufacturing qualifications, there’s no problem doing this; but if it’s just for personal interest or your own use, I advise you not to take such risks! Special equipment is **subject to mandatory regulation!**
Same as above, it is not recommended. . . .
The original poster is amazing – if a rule doesn’t meet their expectations, they just have to figure something out on their own… If they try to do it by themselves, they might end up causing trouble for themselves； If a company uses it, the safety inspections won’t approve it!
Bending and the like are trivial; what’s important is insulation and vacuuming. Good welding skills as well as a range of processing equipment are required. This isn’t some simple folding toy – if pressure is involved, it’s likely to fall under the category of special equipment, subject to mandatory inspection, and individuals cannot handle it
Okay, thank you! Can a large tank made of 304 aluminum hold liquid nitrogen? I’m worried it will evaporate quickly and be gone in a day.
Well, yes, because the cost of having companies manufacture liquid nitrogen tanks is incredibly high, and it seems that such companies are all located in the Xinxiang area, which is quite far from me.
It’s not due to pressure; it’s just a regular lid that doesn’t lock