Water supply booster station is an effective measure to alleviate the shortage of urban water supply pressure. Its core is to lift the pump station, and the core of the pump station is the pump. The selection of pump station directly affects the normal operation of water pump station.
Centrifugal pump is usually used in domestic water supply pressurization station. Centrifugal pump has the advantages of simple structure, no pulsation of infusion, simple flow regulation and so on. According to the actual situation of the project, first select the category of centrifugal pump and consider as follows.
(1) Decide which pump to choose according to the characteristics of the medium. Such as clean water pump, corrosion-resistant pump, or chemical process pump and impurity pump. When the medium is highly toxic, valuable or radioactive and other substances that are not allowed to leak, consider selecting non leakage pump (such as shielded pump, magnetic pump, etc.) or double face mechanical seal with leakage collection and leakage alarm device. If the medium is volatile liquid such as liquefied hydrocarbon, low NPSH shall be selected, such as barrel pump.
(2) Horizontal pump and vertical pump (including submerged pump and pipeline pump) shall be selected according to the on-site installation conditions.
(3) Single suction pump, double suction pump or small flow centrifugal pump shall be selected according to the flow.
(4) Single stage pump, multi-stage pump or high-speed centrifugal pump shall be selected according to the lift.
