Cleaning and storage of liquid nitrogen cryogenic storage tank

1. Placement of liquid nitrogen low temperature storage tank
Liquid nitrogen low temperature storage tank shall be stored in a well ventilated and cool place, and shall not be directly exposed to the sun. Due to its precise manufacturing and its inherent characteristics, no matter in use or storage, liquid nitrogen low-temperature storage tank is allowed to tilt, lay horizontally, upside down, pile up, collide with each other or collide with other objects. It is required to handle with care and keep upright all the time.
 
2. Cleaning of liquid nitrogen low temperature storage tank
When the low-temperature storage tank is not in use, it shall be rinsed with clean water, drained, dried with a blower, and placed for use at room temperature. When the liquid nitrogen in the low-temperature liquid nitrogen storage tank evaporates, the remaining missing substances (such as frozen sperm) melt quickly and become liquid substances and attach to the tank, which will cause corrosion to the aluminum alloy tank.
 
If a cavity is formed, the low-temperature liquid nitrogen storage tank will be discarded, so it is necessary to brush the tank after the liquid nitrogen in the cryogenic storage tank is exhausted. The specific scrubbing methods are as follows: first, take out the inner lifting cylinder of liquid nitrogen low temperature storage tank, remove the liquid nitrogen, and place it for 2-3 days. When the temperature in the tank rises to about 0 ℃, pour the warm water of about 30 ℃ and scrub it with cloth. If it is found that some melted substances are stuck on the bottom of the liner, it must be washed carefully. Then wash it with clean water for several times, then invert the liquid nitrogen tank, put it in a place that is not safe to overturn indoors, and air dry naturally, or air dry it with a blower as mentioned above. Note that in the whole brushing process, the action should be slow, the temperature of pouring water should not exceed 40 ℃, and the total weight should not exceed 2kg.  
 
3. Safe transportation of liquid nitrogen Cryogenic storage tank
The liquid nitrogen cryogenic storage tank must be padded and fixed in the wooden frame during transportation. The tank shall be separated from the tank by filler to prevent bumping and collision and strictly prevent dumping. During loading and unloading, the liquid nitrogen tank shall be strictly prevented from collision, not to mention dragging on the ground at will, so as to avoid reducing the service life of the low temperature liquid nitrogen tank.