The principle of liquid nitrogen injection mainly depends on pressure difference. When the pressure in the liquid nitrogen tank reaches a certain value, liquid nitrogen will be ejected from the tank. Specifically, under the action of pressure, liquid nitrogen enters the nozzle through the conveying pipeline, and then is ejected at high speed. The design of the nozzle can make liquid nitrogen evaporate quickly and turn into gas when it is ejected, thus producing a powerful refrigeration effect.

Self-pressurizing liquid nitrogen tank

Liquid nitrogen dewar

Precautions for use

1. Operators need professional training before using liquid nitrogen tanks.

2. Before use, check whether the liquid nitrogen tank is normal, especially the valves and safety devices should be in good condition.

3. The liquid nitrogen tank should be stored in a well-ventilated, cool and dry place, away from heat sources and fire sources.

4. When using, pay attention to the working conditions of pressure gauge and safety valve. If there is any abnormality, stop using it in time and contact a professional for handling.

5. During transportation, ensure that the liquid nitrogen tank is firmly fixed to avoid collision and vibration.