Liquid nitrogen tanks can be divided into two types according to their uses: liquid nitrogen storage tanks and liquid nitrogen transport tanks. They have the dual functions of reducing liquid nitrogen evaporation and fixing the lifting cylinder, and can maintain high vacuum for a long time.

Does the stopper of liquid nitrogen tank need to be sealed?

1. First of all, the stoppers of liquid nitrogen tanks are made of insulating foam materials, which have good insulation effects. The stoppers of liquid nitrogen tanks are made of this material to prevent heat loss and achieve good insulation effects.

2. Is it right for the liquid nitrogen tank stoppers to be sealed or not completely sealed? The answer is that they do not need to be completely sealed. Because all liquid nitrogen tanks will evaporate liquid nitrogen to form gas, and the gas formed can naturally overflow along the gap on the edge of the stopper, and no pressure space will be formed.

3. If the stopper is sealed, the pressure inside the liquid nitrogen tank will gradually increase, and finally high pressure will be formed inside, which may lead to dangerous conditions.

Although the stopper is not airtight, it has little effect on the loss of liquid nitrogen, because the liquid nitrogen container itself is a very good insulator, and the mouth of the liquid nitrogen tank is relatively long, which effectively prevents heat exchange with the outside.