Problems with high-speed pump seals
Thread Content
One of the company’s high-speed pumps has a seal oil pressure of 0.8, a raw material buffer tank pressure of 0.3, and an outlet pressure of 7.0. Recently, it was found that the seal oil pressure increased gradually, reaching up to 0.9; raw oil was discharged while depressurizing the seal oil system. How does the crude oil enter the mechanical seal oil system? The oil pressure of the mechanical seal is always higher than the pressure of the medium; therefore, leakage should occur when the seal oil leaks into the medium, right?
Either the seal oil pressure is fluctuating, or the seal oil pressure gauge is broken; try replacing it with another gauge.
The pressure gauge might be broken; replace it with a new one. Or perhaps the system pressure sometimes exceeds 0.8.
The normal seal oil pressure is 0.8; the pressure gauge is working properly. With a medium pressure of 0.3, it shouldn’t leak into the seal oil system
You are sure it’s a mechanical seal leak. Note: When draining the seal oil, check whether there is any continuous leakage of fluid Is it this pressure that keeps rising? Second, for mechanical seals, it depends on the type of mechanical seal. Where does the sealant pressure come from? Has there been any change in this nitrogen seal pressure? Third: The pressure resulting from leakage in the mechanical seal cannot be considered as the pressure in the buffer tank. With such high outlet pressure, it is mainly due to minor leaks; there is leakage from the mechanical seal at the outlet. It is likely that your system uses a series of mechanical seals, with the first mechanical seal experiencing leakage. And it’s a minor leak.
The problem you’re referring to is likely an leakage in the mechanical seal. The pressure difference you mentioned shouldn’t be that significant. I work in the field of mechanical seals, and I encounter this situation quite often
Not bad; the medium can be continuously discharged, and the pressure in the sealing system shows a slow upward trend. The mechanical seal is definitely leaking. I want to figure out how it got in.
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