There is a cryogenic container used in conjunction with laboratory cell liquid nitrogen tanks and superconducting experiments—liquid nitrogen supply tanks!

It is a pressured liquid nitrogen tank, designed to replenish liquid nitrogen in a large-capacity container, and can also be used for superconducting experiments.

It has its own liquid nitrogen storage space and pressure boosting system. When working, it will boost the pressure internally first, and then it can inject liquid nitrogen after the pressure reaches a certain value! The liquid outlet pressure reaches the standard value and the liquid nitrogen is output smoothly. If it does not reach the standard value, the output cannot be performed or the speed is very slow!

So what should you do if you find that the pressure of the liquid nitrogen supply tank is not enough when the liquid is discharged?

Go adjust the boost valve!

The booster valve of the booster system of the liquid nitrogen supply tank can be opened, and the pressure is also controlled by the booster valve!

After the booster valve is opened, the liquid nitrogen in the booster pipe between the inner and outer tanks of the low-pressure liquid nitrogen supply tank absorbs heat and vaporizes, and enters the inner tank along the gap opened by the valve. This gas presses the liquid nitrogen in the inner tank into the booster tube, and repeats the gasification → entry → exchange → boost process until the pressure gauge shows the hydraulic pressure ≥ 0.05MPa, and the liquid nitrogen is output smoothly.

It can be seen that it is the booster valve that controls the liquid outlet pressure of the entire liquid nitrogen supply tank!

Therefore, when the liquid pressure from the liquid nitrogen supply tank is insufficient, all you need to do is adjust the booster valve! If the pressure is not enough, turn the booster valve clockwise and observe the pressure gauge to see if the pressure value is reached.

Of course, the prerequisite for pressure control by the booster valve is that the vent valve is closed. To boost pressure, the vent valve must be closed. Don’t forget this!