Liquid nitrogen container filling liquid nitrogen precautions
Edit: Henan Tianchi Instrument Equipment Co., Ltd Date:2019-05-08
When filling the liquid nitrogen container with liquid nitrogen, in addition to taking precautions, it is necessary to inspect the container before using the liquid nitrogen container.
First check the appearance of the depression, this does not affect the normal use, can be ignored;
Secondly, it is necessary to check whether the vacuum exhaust port is in good condition. If it is damaged, the vacuum degree will be lowered. In severe cases, the air intake cannot be kept warm, so that the upper part of the tank will be frosted, the liquid nitrogen loss will be large, and the value of continued use will be lost.
Finally, check the inside of the tank. If there is any foreign matter, it must be taken out to prevent the inner tank from being corroded.
If there is no problem above, you can use liquid nitrogen. However, be careful when filling liquid nitrogen. For new tanks or tanks that are in a dry state, they must be slowly filled and pre-cooled to prevent the temperature from falling too quickly to damage the liner and reduce the service life. Do not pour liquid nitrogen on the vacuum vent when filling liquid nitrogen to avoid a drop in vacuum. We need special attention.


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