What is the principle of storing liquid nitrogen in liquid nitrogen tank?

1. Liquid nitrogen tank, also known as liquid nitrogen biological container, is a kind of biological storage container, which is usually used to store active biological materials, such as livestock semen and active vaccines.

Second, the working principle of liquid nitrogen tank.

Liquid nitrogen storage tank is a kind of equipment to realize its value through the physical characteristics of liquid nitrogen. Liquid nitrogen is a colorless and odorless substance with extremely low temperature. At atmospheric pressure, its temperature is-196℃. The production of liquid nitrogen storage tank is based on this physical characteristic of liquid nitrogen. Open the drain valve of the tank bottom liquid pipeline, and the liquid nitrogen will be discharged through the pipeline and evaporated by the tank bottom evaporator. The gasified gas will enter the top of the tank, and the pressure in the tank providing liquid nitrogen will be self-boosted. When the liquid nitrogen tank needs to supply air to the outside, the liquid in the tank will be pressed out by the pressure in the tank and then sent to the outside through the pipeline. Liquid nitrogen will be vaporized by vaporizer and released, and semen or vaccine will be stored at low temperature in an environment filled with nitrogen.