What are the main factors affecting the working efficiency of centrifugal pumps?
Main Factors Affecting the Working Efficiency of Centrifugal Pumps：
1. The efficiency of the pump itself is the most fundamental factor. Under the same working conditions, the pump efficiency may differ by more than 15%.
2. Before starting the centrifugal pump, the staff did not pay attention to the preparations before starting the centrifugal pump. The basic operation rules of warm pump, disc pump and liquid filling pump are not fully implemented, which often causes cavitation of the pump, large noise, large vibration and low pump efficiency.
3. Hydraulic loss includes hydraulic friction and local resistance loss. After a certain operation period, the surface of the impeller and guide vane will inevitably wear, the hydraulic loss will increase, and the hydraulic efficiency will decrease.
4. The operating condition of the centrifugal pump is lower than the rated working condition of the pump. The pump has low efficiency and high energy consumption.
5. The centrifugal pump is in idle state due to the blockage of the filter cartridge and the blockage of the pipeline air inlet.
6. The volume loss of the pump is also called leakage loss, including three kinds of leakage losses of impeller seal ring, interstage and axial force balance mechanism. The volume efficiency is not only related to the design and manufacturing, but also related to the later management. After a certain period of continuous operation of the pump, due to the friction between the components, the clearance increases and the volumetric efficiency decreases.
7. The motor efficiency is basically unchanged in operation. Therefore, it is important to select a high efficiency motor.
8. The influence of mechanical efficiency is mainly related to design and manufacturing quality. After the pump is selected, the later management has little influence.
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M: rosie.lu@winwinpipe.com
Post time: Dec-24-2022