Problem with the shielded pump: high current. Please everyone share your thoughts
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The shielded pump draws high current when in operation; the impeller, rotor, stator, and graphite sleeve are all in good condition. There is material inside the tower as well, and the filter is not dirty. Moreover, after running the pump for a while, the pressure drops suddenly – there’s no flow! High-temperature pump.
What is the medium you use for transportation? What’s the temperature? What are the import and export pressures? Also, what type is this shielding pump of yours?
After ruling out equipment issues, we consider the process aspects; the reasons for excessive starting current include high medium density (such as the presence of water), excessive load at startup (the outlet valve being open or not closed properly, with an empty pipeline downstream). The sudden loss of pressure after startup can be caused by pump cavitation (water inclusion or vaporization of the medium), or by an insufficient flow of medium into the inlet pipe (due to a small valve opening, partial blockage, or vortices caused by a low liquid level at the bottom of the tower).
Before starting the pump, has it been filled with liquid? This can also happen when there is no liquid inside the pump!
What is gas compress therapy? How is it formed? What are the causes? How can it be resolved?
It’s filled; there’s liquid in all the tail discharge valves
It might be cavitation; everything has vaporized, but why is there no abnormality with the pump? It’s really annoying