If you don’t understand, feel free to ask: The inlet of a centrifugal water pump is under negative pressure; how can we prevent the mechanical seal from being damaged?
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If you’re not sure, just ask: In the company, there are two condensate pumps used for heating, and they are ordinary single-stage horizontal centrifugal pumps. Under normal operating conditions, the inlet of the water pump is at a \"slightly positive pressure,\" but improper operation can easily result in negative pressure at the pump’s inlet, which in turn can cause the mechanical seal to burn out. Question: Regarding the issue of negative pressure often occurring at the inlet of centrifugal water pumps, what type of mechanical seal should be used to prevent the seal from being damaged?
Select a standard mechanical seal chamber, and introduce the flushing water at 11 pressure from the water outlet pipe or from a location with stable pressure downstream
The inlet of the water pump is at a “slightly positive pressure,” but improper operation can easily result in negative pressure at the pump’s inlet, thereby causing cavitation that damages the mechanical seal. Why not solve it through process adjustments or pipeline settings?
Single/double sealing with cooling water is available
The outlet is connected to the inlet via a balance pipe
It is recommended to install a buffer tank at the inlet; this should be relatively simple. If addressing the issue through mechanical seals is considered, a flushing system needs to be added to apply additional pressure to those seals; dealing with two pumps in this way would be rather complicated