Many users don’t understand how to operate a self-pressurized liquid nitrogen tank.Let’s explain it in detail today.
1.Pressure replenishment sequence: close the vent valve,open the boost valve,and open the liquid outlet valve.The self-pressurizing liquid nitrogen tank needs to be pressurized first,and the vent valve must be closed before pressurizing;then open the pressurizing valve to allow the nitrogen in the pressurizing tube to enter the inner tank,and then start the exchange cycle of nitrogen and liquid nitrogen until the pressure increases.to ≥0.05MPa.
After the infusion is completed,first stop the pressurization,then stop draining the liquid nitrogen,and then open the pressure relief exhaust valve,that is,the vent valve.
2.Let it stand for storage and open the vent valve.
During static storage,although there is no pressure,the liquid nitrogen naturally volatilizes,and an outlet is required to release the nitrogen.The vent valve just acts as this "air outlet".