How to address the cooling water issue for the double-end face seal of mechanical pumps?
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The mechanical seal of the pump in our unit is of the double-face type and is cooled by water. However, the material being transported requires strict control of moisture levels; I’m worried that if the mechanical seal leaks, water could enter the material system. Experts, how can this problem be solved without replacing the pump or the mechanical seal?
The pressure inside the pump is high, while the pressure of the cooling water for the mechanical seal is lower; this should not cause any problems
The technician on the 2nd floor was right; it’s necessary to deepen the understanding of how the equipment works.
Can’t it be done without water, using mediums like oil instead?
For double-faced mechanical seals that share a rotating ring face to face, the lubricant used is likely white oil or machine oil. This lubricant flows into a lubricant tank, which contains cooling water coils to cool the lubricant. . . In the case of a tandem double-end face mechanical seal, the lubricant used on the side of the mechanical seal that is not in contact with the medium is white oil or machine oil. This lubricant flows into a lubricant tank, which contains cooling coils to cool the lubricant ； The friction pair on the medium side is definitely lubricated with the medium inside the pump!
If conditions permit, it is advisable to add a sealed cooler, using a pump to convey the medium itself, which then passes through the cooler as a coolant for sealing purposes
It is recommended to change the flushing scheme to Plan52 flushing, and add an additional liquid storage tank so that a neutral oil can be used as the flushing medium.
Add a medium cooler to flush the mechanical seal with the cooled medium
An appropriate solvent can be chosen as the sealing fluid
As clearly stated upstairs, use closed-loop industrial white oil as the sealing fluid~~~ Install a coil heat exchanger cooled by white oil/circulating water~~~