Discussion on pump overcurrent
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A centrifugal pump that has been in use for nearly ten years has experienced overcurrent issues in recent months. The pump itself as well as the motor were inspected, and no problems were found. I hope everyone can discuss the causes of overcurrent and share their ideas????
Is the impeller new or old? If it’s old, is there wear in the impeller’s flow channels, and has the clearance of the mouth ring increased? The overcurrent is most likely caused by a decrease in the pump’s hydraulic efficiency and volumetric efficiency
The old impeller, the clearance at the pump inlet ring, and the impeller have been checked; personally, I don’t think there are any major problems.
Given that the quality parameters of the device’s products have not been very stable recently, I wonder if it might be due to changes in the composition of the medium being transported.
If the density or viscosity changes significantly, that will occur
Well, I’m also waiting for the indicators to return to normal before proceeding with verification.
If changes in the composition of the medium cause a supercurrent, does the current change when the flow rate is adjusted?
Changes in the medium composition will, of course, have an impact on the pump’s operation
As long as the specifications of all internal components of the pump remain unchanged, there is no distinction between old and new. Analysis work prior to maintenance is very important, as it can reduce downtime due to maintenance, potential damage to components caused by disassembly, and waste of other consumables. Problems that arise in the manufacturing process should first be analyzed properly before any actions are taken to address them. (The centrifugal pump) The overcurrent can be controlled by closing the outlet valve.
This post was last edited by Frozen Desert on 2019-8-12 08:32. Did the thickness of the gasket at the joint change during maintenance? If nothing else seems to be wrong, it might be the variation in the thickness of the sealing gasket that causes axial displacement of the impeller and the pump casing, resulting in the impeller’s flow channel and the pump casing’s flow channel not being on the same plane and thus leading to reduced efficiency. We had this situation once. However, superfluidity usually occurs only when it combines with other minor defects. Factors such as a larger gap in the mouth ring, a thicker shoulder, slight misalignment, and some wear on the impeller all contribute to this issue. A pump that’s been in use for ten years might also have lost its levelness