Ice formation in the bearing housing of cryopumps?
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The cold heat from the low-temperature methanol washing pump is transferred to the bearing housing, causing the entire surface of the bearing housing to freeze over. Is there any way to prevent the bearing housing from freezing? I seek advice from experts :)
Heating by introducing nitrogen gas behind the mechanical seal, according to Plan 62
If possible, a dry gas purge pipe, such as dry nitrogen or air, can be installed at the connection point. I’m not sure what this pump looks like; it’s possible to use insulation wrapping as a solution, so it’s worth giving it a try.
Both nitrogen purging for the mechanical seal and insulation design are in place, but icing still occurs in the bearing housing, especially during winter.
Both nitrogen purging for the mechanical seal and insulation design are in place, but icing still occurs in the bearing housing, especially during winter.
I’m not sure if there are any mature solutions available. Also, when the nitrogen pump used for purging the mechanical seal on the pump is in operation, should it be turned off or kept running?
Both nitrogen purging for the mechanical seal and insulation design are in place, but icing still occurs in the bearing housing, especially during winter
For ordinary centrifugal pumps, we are now removing the existing insulation and redoing it on the other side
For this type of pump, the flushing scheme 11+52+62 is usually selected. I’ve never seen a situation like the one you’re describing