Multi-stage pump mechanical seal flushing pipe
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What is the purpose of the flushing pipelines for the front and rear mechanical seals of this multi-stage centrifugal pump, and which type of flushing scheme does it belong to?
The front and rear seal flushing pipelines of multi-stage centrifugal pumps are primarily used to cool and lubricate the seals, preventing overheating and dry friction, extending the service life of the seals, and helping to improve the pump’s operational efficiency. According to API (American Petroleum Institute) standard 682, this flushing scheme can be Plan 32, Plan 52, or another appropriate flushing scheme, depending on the design of the pump and its operating conditions. .
The seal flushing line of a multi-stage centrifugal pump is used to direct a portion of the fluid discharged by the pump to the seal area, in order to flush, cool, and lubricate the seal, thereby preventing the pump’s sealing surfaces from overheating and the fluid from crystallizing. This usually falls under the Plan 32 flushing scheme mentioned in the API 682 standard. .
Aren’t 32 all external rinses?
Is that one inside, from the exit to the entrance, a balance pipe?
This seems more like a balance pipe for a multi-stage pump, right?
The one on the inner side is the balance pipe of the multi-stage feed water pump; it’s mentioned in the instruction manual.