Liquid nitrogen supply tank is a cryogenic container made of stainless steel, mainly used for liquid nitrogen transfer and replenishment; The container itself has a pressure boosting system, which supplies liquid nitrogen to other containers by controlling valves. It is usually used in conjunction with experimental instruments, electronic equipment and other devices. It is characterized by being equipped with double safety automatic control valves to provide double safety protection measures; it can be continuously pressurized and has the uninterrupted nature of continuous liquid discharge; it is designed with 304 stainless steel inner and outer tanks + vacuum insulation structure, and has been rigorously tested at low temperatures; it is installed with Mobile casters with high load-bearing capacity make movement quick and convenient. Correct use steps of liquid nitrogen supply tank: 1.Add liquid Input liquid from the liquid inlet valve. When filling the tank, you must first open the vent valve, connect the metal hose for infusion to the liquid inlet valve, open the liquid inlet valve, and then add liquid nitrogen to the tank. The filling is completed. Finally, close the liquid inlet valve. 2. Liquid level indication Liquid nitrogen supply tanks are generally equipped with a buoyancy level gauge. By observing the yellow indicator ring on the transparent display, you can grasp changes in the liquid level in the tank. 3.Storage When storing liquid nitrogen, the liquid inlet valve and booster valve should be closed, and the vent valve should be opened; 4.Transportation When the liquid nitrogen supply tank needs to be transported, the opening and closing states of each valve should remain the same as during storage, and the bottom casters should be fixed to prevent losses caused by road bumps. 5.Infusion When you need to add fluid to other containers, pay attention to the following steps: (1) Close the vent valve; (2) Open the booster valve; (3) Observe the pressure gauge; (4) When the pressure rises to 0.05MPa, open the drain valve to replenish liquid nitrogen; Liquid nitrogen supply tank is an important cryogenic equipment, which is widely used and frequently used. Correct use is more conducive to the smooth progress of experimental work.