The self-pressurizing liquid nitrogen tank belongs to the YDZ series and is made of stainless steel. It is suitable for harsh use environments and reduces the evaporation loss rate. The container is equipped with a self-pressurizing system that can generate its own internal pressure for continuous liquid discharge. . It is mainly used to transport and store liquid media to replenish other containers. It can be equipped with a liquid nitrogen tank monitoring terminal and monitoring software, which can realize remote transmission of liquid nitrogen level, pressure and other data, realize remote alarm of low liquid level and over pressure, and can also manually remotely pressurize and control fluid replenishment.