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Cleaning of liquid nitrogen low temperature storage tank
Date: Dec 13, 2019
Low temperature liquid nitrogen storage tank is used to store liquid nitrogen, so the requirements for the storage tank are relatively high. After using the tank, we need to clean the tank in time, which can extend the service life of the tank and do not delay the next normal use.
When the liquid nitrogen 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. After the liquid nitrogen in the 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 liquid nitrogen storage tank will be scrapped, so it is necessary to brush the tank after the liquid nitrogen in the liquid nitrogen storage tank is exhausted.
The specific scrubbing methods are as follows: first, take out the inner lifting cylinder of liquid nitrogen cryogenic storage tank, remove the liquid nitrogen, and place it for 2-3 days. When the temperature in the tank rises to about 0 ℃, then pour in the warm water of about 30 ℃ and scrub it with a cloth. If it is found that some melted substances are stuck on the bottom of the liner, it is necessary to wash them carefully. Then wash it with clean water for several times, and then invert the liquid nitrogen storage 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 before.
Note that in the whole process of brushing, the action should be slow, and the temperature of pouring water should not exceed 40 ℃, and the total weight should not exceed 2kg.
Advantages of liquid nitrogen storage tank:
The shelf life of liquid nitrogen can be increased; the liquid nitrogen storage tank is made of high-strength aluminum alloy and has a multi-layer screen (vacuum insulation), which ensures a long shelf life. The specific shelf life depends on the model, caliber and later use.
The sealed container cover has a special design, which can prevent the pressure accumulation in the tank and reduce the heat transfer through the throat. The handle of each tank for storing material samples has a special coating, which can protect the handle from cooling and is easy to use. The liquid nitrogen tank with a capacity of less than 10 liters has a convenient handle.
When the liquid nitrogen 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. After the liquid nitrogen in the 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 liquid nitrogen storage tank will be scrapped, so it is necessary to brush the tank after the liquid nitrogen in the liquid nitrogen storage tank is exhausted.
The specific scrubbing methods are as follows: first, take out the inner lifting cylinder of liquid nitrogen cryogenic storage tank, remove the liquid nitrogen, and place it for 2-3 days. When the temperature in the tank rises to about 0 ℃, then pour in the warm water of about 30 ℃ and scrub it with a cloth. If it is found that some melted substances are stuck on the bottom of the liner, it is necessary to wash them carefully. Then wash it with clean water for several times, and then invert the liquid nitrogen storage 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 before.
Advantages of liquid nitrogen storage tank:
The shelf life of liquid nitrogen can be increased; the liquid nitrogen storage tank is made of high-strength aluminum alloy and has a multi-layer screen (vacuum insulation), which ensures a long shelf life. The specific shelf life depends on the model, caliber and later use.
The sealed container cover has a special design, which can prevent the pressure accumulation in the tank and reduce the heat transfer through the throat. The handle of each tank for storing material samples has a special coating, which can protect the handle from cooling and is easy to use. The liquid nitrogen tank with a capacity of less than 10 liters has a convenient handle.
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