There is a valve on the top of the self-pressurizing liquid nitrogen tank that controls the pressure increase. Only when a certain pressure is opened can drainage be achieved. So, when the pressure reaches what level, can this function be realized?
When the pressure reaches ≥0.02MPa-<0.09MPa, liquid nitrogen can be discharged.
However, it should be noted that when the pressure of the self-pressurized liquid nitrogen tank reaches 0.02MPa, the pressure is too low. Although the liquid nitrogen can be discharged, the discharge speed is slow and intermittent and unstable;
When the pressure reaches 0.09MPa, the pressure is too high and the liquid nitrogen flow rate is fast. In order to avoid dangerous events, the safety valve will be triggered and the liquid discharge will be interrupted;
Therefore, the standard pressure given by the KGSQ liquid nitrogen tank manufacturer is 0.05MPa!