The current in the liquefied gas pump motor has increased
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The company has a liquefied gas pump; when it is in operation, the current is around 70% of the rated load. After operating for some time (1 day), the current rises to 100% of the rated load； I’ve checked the process flow; there are no issues ； The pump has been disassembled; it’s in good condition, with no signs of corrosion or wear ； The motor inspection also showed normal results ；
We should first check the pump; also, look at the current load condition of the other pump
The two pumps are in similar condition, with a slightly slower increase in current；
1. Has the composition of liquefied gas been analyzed? 2. As the proportion of heavy components increases, the density rises and the power consumption of the pump increases. 3 In petrochemical companies, the composition of liquefied gas as the final product changes relatively little ； In the case of intermediate products, the changes in their components are relatively large.
The medium components have been analyzed, and no significant changes have been found； Moreover, the pump worked normally when it was started up, and there were no changes in the process during operation; the outlet flow rate and pressure were both normal. Only the current drawn by the motor kept rising gradually. After about one or two days, the load (current) reached 100%, at which point another pump was switched on ； The other one is the same; the duration may vary, but the phenomenon is identical ；