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Precautions for the use of liquid nitrogen tanks

Editor:adminClick： Time:2018-07-14 09:47

Precautions for the use of liquid nitrogen tanks
1.Due to the large heat of the liquid nitrogen tank, the first time the liquid nitrogen is filled, the heat balance time is longer, and the liquid nitrogen medium can be pre-cooled first(About 60L). Then slowly fill it up (so that it is not easy to form ice blocks).
2. In order to reduce the loss of liquid nitrogen in the future, please refill the nitrogen when there is a small amount of liquid nitrogen in the liquid nitrogen tank. Or fill the liquid nitrogen within 48 hours after using liquid nitrogen.
Precautions for the use of liquid nitrogen tanks

Precautions for the use of liquid nitrogen tanks

3. In order to ensure the safety and reliability of the liquid nitrogen tank, the liquid nitrogen tank can only be filled with liquid nitrogen, liquid oxygen and liquid argon.
4. When transporting liquid nitrogen medium on the road surface of Grade III or below, please do not exceed 30km/h.
Precautions for the use of liquid nitrogen tanks

Precautions for the use of liquid nitrogen tanks

5. The vacuum nozzle on the liquid nitrogen tank, the seal of the safety valve, the seal can not be damaged.
6. If the liquid nitrogen tank is not used for a long time, drain the liquid nitrogen medium inside the liquid nitrogen tank and blow it dry, then close all valve seals.
7. be filled with liquid nitrogen medium. Otherwise, the pipeline will be blocked by ice, which will affect the boosting and infusion.
8. Liquid nitrogen tanks are instruments and meters. They should be handled with care. When opening the valves of liquid nitrogen tanks, the force should be moderate and not too fast. In particular, the liquid nitrogen tank metal hose and inlet/drain. When the joint at the valve is connected, it cannot be tightened too much with a strong force. It can be sealed by slightly tightening it in place (the ball head structure is easy to seal), so as to avoid twisting or even twisting the liquid nitrogen tank connector. Hold the liquid nitrogen tank by hand.
9.When infusion, water and frost on the outer surface of the liquid nitrogen tank is a normal phenomenon. When the pressure increasing valve of the liquid nitrogen tank is opened for boosting operation, since the pressurized coil is attached to the inner wall of the outer cylinder of the liquid nitrogen tank, the liquid nitrogen tank coil is absorbed by the liquid nitrogen. The heat of the cylinder is vaporized to achieve the purpose of boosting, and there may be spotted frost on the outer cylinder of the liquid nitrogen tank. After closing the liquid nitrogen tank booster valve, the frost point will slowly dissipate. When the liquid nitrogen tank pressure increasing valve is closed and the infusion operation is not performed, the outer surface of the liquid nitrogen tank has water and frost, which indicates that the vacuum of the liquid nitrogen tank has been destroyed, and the liquid nitrogen tank cannot be used any more. Should be looking for professional manufacturers of liquid nitrogen tanks for repair or disposal.
Precautions for the use of liquid nitrogen tanks