Introduction to the advantages and disadvantages of the ways in which stainless steel multi-stage centrifugal pumps affect water pumps

Introduce the advantages and disadvantages of the methods that affect stainless steel multi-stage centrifugal pumps introduced below. For pumps that have already been working, changing the pump structure is not very convenient, and due to changing the structure, the universality of the pump is reduced. Although it is economical and convenient to adjust the flow at certain times, it is rarely used in production. Here, we will only analyze the method of adjusting the flow rate by changing the speed of the centrifugal pump.

Introduce the advantages and disadvantages of the ways in which the pump affects the water pump introduced below. Analyze that when changing the speed of the multi-stage centrifugal pump to adjust the flow rate from Q1 to Q2, the speed (or motor speed) of the multi-stage centrifugal pump decreases from n1 to n2. At the speed of n2, the characteristic curve Q-H of the pump intersects with the pipeline characteristic curve He=H0+G1Qe2 (the pipeline characteristic curve remains unchanged) at points A3Q2, H3, and A3 are the new working points after adjusting the flow rate through speed regulation.

Introduce the advantages and disadvantages of the way it affects the water pump introduced below. This adjustment method has a clear, fast, safe and reliable adjustment effect, can extend the service life of multi-stage centrifugal pumps, save electricity, and reduce the NPSHr of the pump by reducing the speed of operation, keeping the pump away from the cavitation zone and reducing the possibility of pump cavitation.