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Reduce pump energy consumption

29 Jan 2022Email

A water pump is a machine that transports or pressurizes liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the liquid energy. It is mainly used to transport liquids including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, etc. It can also transport liquid and gas mixtures and liquids containing suspended solids. The technical parameters to measure the performance of the pump include flow, suction, head, shaft power, water power, efficiency, etc.; according to different working principles, it can be divided into volumetric pumps, vane pumps and other types. Positive displacement pump uses the change of its working chamber volume to transfer energy; vane pump uses the interaction between rotating blades and water to transfer energy. There are centrifugal pumps, axial flow pumps and mixed flow pumps.

centrifugal pump

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How to reduce the energy consumption of the water pump?

The hot summer is now SLB, SLQB dismantling vertical double suction pump, ISWB horizontal dismantling pipeline centrifugal pump, ISGB vertical dismantling pipeline centrifugal pump, BL clean water centrifugal pump, ISGD, IRGD low speed vertical pipeline pump ,ISG, IRG vertical pipeline pump, ISWD low-speed horizontal pipeline centrifugal pump and other water pump products are used, everyone should pay attention to the four small problems of light energy consumption of the pump when using these pumps, less water or even no water. .

1. The surface of the pump and the inner surface of the pressurized water chamber (also known as the volute) are unevenly corroded. If the surface is rusted and uneven, it will reduce the pumping capacity of the pump by 7%-8%. When overhauling, only need to use steel brush and iron sandpaper or grinding wheel to smooth it, which can reduce the fuel consumption or power consumption of the water pump by 9%-14%.

Second, the seal ring gap increases. The test results show that when the clearance of the pump in the radial direction of the impeller increases by 4 mm, the pumped water volume of the pump will be reduced by 10%. During maintenance, it is only necessary to use organic adhesive and asbestos wire to restore the clearance to the factory specified, which can reduce the fuel consumption or power consumption of the pump water by 10%-12%.

3. The axes of the pressurized water chamber and the impeller do not coincide. According to the test, when the pressure chamber of the pumped water is deviated from the axis of the impeller by 2 mm or the declination angle is greater than 2 degrees, the pumped water volume of the pumped water will be reduced by 5%-6%. When overhauling, it is only necessary to measure carefully, carefully locate the position where the axes coincide and install it securely, which can reduce the oil or power consumption of the pump during operation by 6%-7%.

4. The blade installation angle is inconsistent. When the blade installation angle of the pump water is inconsistent, the pump water volume of the pump water will be reduced by 5%. When overhauling, use the angle ruler to measure accurately and install it firmly, which can reduce the fuel consumption or power consumption of the pump water by 5%-6%.

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