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Variable frequency speed regulation of horizontal multistage centrifugal pump

- May 31, 2017 -

Horizontal multistage centrifugal pump has the characteristics of high efficiency, wide range of performance, safe and stable operation, low noise, long service life and convenient installation and maintenance. Other liquids for conveying clear water or physical and chemical properties similar to those used in waters. Mainly applies to the urban high-rise building water supply and drainage and fire, plant, mine water supply and drainage, long-distance transportation, production process cycle of water, HVAC cycle, water and other uses of life.

Variable frequency speed regulation of horizontal multistage centrifugal pump

It is the basic condition to speed up the pump to deviate from the high efficiency zone. When the speed of the horizontal multistage centrifugal pump is changed, the valve opening is invariable (usually the maximum opening), the characteristic of the piping system is invariable, and the water supply capacity and the lift characteristic change. When the required flow rate is less than the rated flow, the head of the frequency conversion speed control is smaller than the valve throttle, so the water supply power required by frequency conversion is smaller than that of the valve.

Obviously, compared with the valve throttling, the energy-saving effect of frequency conversion speed control is very prominent, and the horizontal multistage centrifugal pump is more efficient.

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