1) high temperature and high pressure
Liquid nitrogen is produced by air compression and cooling, and can be restored to nitrogen when gasified. Nitrogen per liter of liquid, the temperature rises by 15 ° C, and the volume expansion is about 180 times. An explosion occurs when the external temperature exceeds the cooling temperature and pressure that the tank should withstand.
2) collision vibration
The liquid nitrogen tank has a special shockproof design, which can be transported and used in the filling state in addition to the static storage. However, after the liquid nitrogen tank is subjected to severe collision and vibration, the insulation layer or other components may be damaged, and the external environment may directly affect the vaporization and cause an explosion.
3) sealed poor ventilation
If the liquid nitrogen is used and the storage environment is not well ventilated, it will cause the concentration of nitrogen and nitric oxide in the room to accumulate, reaching the explosion limit and causing an explosion.