Seeking help with pumping issues using a centrifugal pump
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This is a centrifugal pump. When filling the pump, how can we completely expel the gas from within the seal chamber?
It’s not as simple as just driving it out, right? If it’s a liquefied gas liquid pump, an inert gas should be used for sealing. Without a gas seal, this absolute sealing may not be achievable. It’s just a guess, for reference only. It is best to follow the diagram of the equipment flow chart, as the principles are contained therein. If there are any images, please share them to facilitate discussion and for reference.
What medium? With such a large photo, the area of the key parts you specified accounts for less than one-tenth of the entire photo – at least the inlet and outlet pipelines of the pump should be highlighted as key elements
In the picture, it can be seen that this uses an organic fluid for liquid-phase sealing. The picture isn’t complete; external liquid-phase sealing relies on external pressure. Once in use, as long as the pressure of the external air source is higher than that in the sealing chamber, the chamber will be filled with liquid. In the event of a leak, the external sealing fluid will flow inward, preventing the medium from leaking to the atmosphere side
Sealing requires separate venting, to be done from the highest point of the mechanical seal
Well, that’s true. Are there any measures? If changes are needed later on, will it still be necessary to modify the pump?
It’s generally not necessary; a blowout mechanism is usually provided
This is the full view of the mechanical pump. Guys, take a look and see if you can suggest anything
The medium is composed of propane and propylene; it is liquefied gas
We will use your method. We also want to know when the nitrogen that was replaced in this area at the initial stage was completely removed, so that we can keep track of the performance of the pump as a whole……