How to properly store liquid nitrogen tanks

Liquid nitrogen tanks can generally be divided into liquid nitrogen storage tanks and liquid
nitrogen transport tanks.
The storage tank is mainly used for the static storage of indoor liquid nitrogen, and should not be used for long-distance transportation in the working state; In order to meet the conditions of transportation, the liquid nitrogen transport tank has made a special shockproof design
.
In addition to being stored standing, it can also be used for transportation in the state of filling liquid nitrogen, but it should also avoid violent collisions and vibrations
.
First, the liquid nitrogen tank should be stored in a well-ventilated cool place, do not direct sunlight in the sun
.
Due to its manufacturing precision and inherent characteristics, liquid nitrogen tanks are not allowed to tilt, horizontally, upside down, stack, collide with each other or collide with other objects, whether in use or storage, and should be handled lightly and always kept upright
.
Second, when the liquid nitrogen tank cleaning liquid nitrogen tank is idle, it is necessary to rinse it with clean water, drain the water, dry it with a blower, and place it at room temperature for use
.
After the liquid nitrogen in the liquid nitrogen tank is volatilized, the remaining missing substances (such as frozen sperm) quickly melt and become liquid substances and attach to the inner tank, which will cause corrosion to the inner tank of the aluminum alloy, if a cavity is formed, the liquid nitrogen tank must be scrapped, so it is very important to brush the tank after the liquid nitrogen tank is exhausted
.
The specific brushing method is as follows: take out the liquid nitrogen tank in the cylinder, remove the liquid nitrogen, place for 2-3 days, wait for the temperature in the tank to rise to about 0 ° C, and then pour warm water of about 30 ° C, scrub
with a cloth.
If you find that individual melted substances stick to the bottom of the inner tank, wash them carefully
.
Then rinse with water several times, then invert the liquid nitrogen tank, put it indoors in a place that should not be overturned, air dry naturally, or air dry
with a blower as described above.
Note that during the entire brushing process, the action should be light and slow, the temperature of the poured water should not exceed 40 ° C, and the total weight should not exceed 2kg
.
Third, the liquid nitrogen tank transportation liquid nitrogen tank must be installed in the wooden frame cushioned during the transportation process, and fixed
.
The tank and the tank should be separated by a filler to prevent bumpy impact and prevent dumping
.
When loading and unloading trucks, it is necessary to strictly prevent the liquid nitrogen tank from hitting, and it is not possible to drag it on the ground at will, so as not to reduce the service life
of the liquid nitrogen tank.