Liquid nitrogen cooling box, gas-sealed tube
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The liquid nitrogen cooling chamber has a \"gas seal tube\" for protecting the nitrogen within the chamber. What is the structure of this gas seal tube? What is its main function?
I’ve heard of this for the first time; could you show me a schematic? Generally, a breather valve is installed at the top of the cryogenic tank to prevent overpressure and underpressure, and flow controls are in place for the nitrogen supply, along with pressure high/low alarms on the cryogenic tank shell ；