Low-temperature storage tank structure:

A low-temperature storage tank is a compact storage device for low-temperature liquids, fully equipped with accessories (valves, safety systems, etc.). The tank consists of a carbon steel vacuum shell and a pressure vessel inside it. It can operate under low to medium pressure according to actual design requirements. Explosion-proof discs and double-acting safety valves provide protection for the tank in case of overpressure. The safety relief device is designed to protect the internal pressure vessel and vacuum shell, and its use and type are determined according to GB150 and the "Fixed Container Regulations," including a double-acting safety relief valve and explosion-proof disc assembly for protecting the internal pressure vessel, as well as an explosion-proof cover for protecting the vacuum shell (shell). The tank is designed and manufactured for safety, reliable operation, and durability (can operate without fault for years), and strict adherence to proper safety and operating procedures is required when operating the tank.

High safety requirements. As the tank stores low-temperature liquids, in the event of an accident, the refrigerated liquid would volatilize in large quantities, with the vaporization amount being approximately 300 times that of the refrigerated state, forming explosive gas clouds in the atmosphere. Therefore, standards such as API, BS, etc., require tanks to be constructed with double-walled structures and utilize containment concepts. In the event of a leak in the first layer, the second layer can completely contain the leaked liquid and evaporated gas, ensuring storage safety.