The Using Of Liquid Nitrogen Tank Inspection Work
Before the use of liquid nitrogen tank need to do a number of checks to ensure that the use of the process more smoothly
(A) Before the use of the inspection
1, Check whether the shell depression.
2, Check the vacuum exhaust port is intact.
3, Check whether there is a foreign body inside the tank.
4, Check whether the corrosion of the liner.
(B) The use of the inspection
1, The use of liquid nitrogen tank to check whether the new tank, whether its pre-cooling.
2, In the filling liquid nitrogen should pay attention not to liquid nitrogen down in the vacuum exhaust port, or cause the vacuum drop.
3, In use to check the cover plug wear, to extend the service life.
4, Should always check whether the appearance of hanging cream, especially the neck wall is frost, if this situation should be liquid nitrogen removed, let the natural melt.
Liquid Nitrogen Tank Output Liquid Nitrogen Step
1. The first step, the vent valve closed
2. The second step, the valve to open
3. The third step, carefully observe the pressure gauge, when the rise to a certain value of 0.05MPa (0.5kg / cm2), for the next step.
4. The fourth step, the discharge valve open, continuous infusion of nitrogen.