What should be considered regarding the piping connections and material selection for liquid oxygen systems?
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What should be considered regarding the piping connections and material selection for liquid oxygen systems? How to prevent vaporization problems.
This post was last edited by wcq1010 on 2015-11-19 at 16:51. Liquid oxygen pipelines can be made using vacuum pipes or stainless steel pipes with insulation. The latter is safer, but it may be more expensive. The requirements for heat retention are quite high. The materials used are all 304 stainless steel pipes. It is recommended to use welding for pipeline connections, with flanges used continuously in special locations.
Safety aspect: 1. The material must be oxygen-compatible, oil- and fat-free, and free of oils and fats. 2. Try to avoid using carbon steel, as its insufficient surface smoothness may lead to combustion explosions. 3. During welding, it must be ensured that there is no oxygen present in the pipeline under pressure. From an economic perspective: I’m not sure what the goal is for liquid oxygen pipelines to prevent vaporization. Because if liquid oxygen is used directly, it is usually introduced into a vacuum pipeline; whereas if gaseous oxygen is used, it will vaporize anyway later on, so it really doesn’t matter. Of course, if it is to be achieved, insulation treatment for the pipes is necessary.
Carbon steel cannot be used for cryogenic liquids~~
For cryogenic liquids, 304 stainless steel is generally preferred, along with a glass foam insulation layer. Vacuum tubes have encountered many problems related to combustion and explosions; moreover, they are also more difficult to maintain~~
:Lol, for liquid oxygen pipelines, many people choose 304 or an even more expensive austenitic stainless steel. .
Be careful with the drainage or exhaust pipes, as they are arranged in a “ several” shape! This prevents vaporization!
Yes. Carbon steel cannot be used for the liquid section. It’s best to avoid using carbon steel as well in the gas section; 304 and 316 are better choices – you deserve that.