Vacuuming of the insulation layer in low-temperature storage tanks
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Dear sea industry colleagues: One of the items in our company’s annual inspection plan is to check the vacuum level in the insulation layers of cryogenic liquid storage tanks (liquid oxygen, liquid nitrogen, etc.). Has anyone come across service providers who specialize in such vacuuming work? If you have their contact information, please share it. Thank you in advance!
Friends, has anyone come into contact with companies in this field?
Any ordinary pressure vessel manufacturer is capable of producing this equipment!
This post was last edited by FORREST_GUMP on 2015-12-8 at 19:52. Our company specializes in the production of complete systems for evacuating the interlayers of low-temperature liquid storage tanks, with a vacuum level that can exceed 8.0E-4 Pa. It is also possible to evacuate 48 450L gas cylinders together; the results are excellent and the system is well-developed. It is widely used by gas cylinder manufacturers in domestic automated production lines. Feel free to contact us via private message
We just had it drawn, but it was the manufacturer’s staff who carried out the drawing. The cost for that is high; actually, I saw that the process is quite simple
I see that your post was posted a long time ago; the problem should have been resolved by now. I’ll mention a few points here for those who might need them in the future. 1. Regarding the vacuum level in the vacuum insulation layer of low-temperature liquid storage tanks (which store liquids such as liquid oxygen, liquid nitrogen, liquid argon, and LNG), the vacuum level has a limited lifespan due to minor leaks in the layer walls and gas release. 2. To measure the vacuum level, a vacuum gauge (which is generally available from manufacturers of low-temperature storage tanks) is inserted into the gauge tube (found on the tank to be tested) in order to read the vacuum level. 3. After measuring the vacuum level, if it is within the acceptable range, then there is no problem ； If it fails the test, jacket vacuuming is required, which can be carried out by a qualified manufacturer. Note: Storage tanks are generally equipped with thermal ohm meters; it is necessary to confirm which vacuum gauge is suitable for use during testing.