The water supply pressurizing station is an effective measure to relieve the shortage of urban water supply pressure. Its core is the lifting pumping station, and the core of the pumping station is the water pump. The choice of water pump not only affects whether the water supply pressurizing station can work normally, but the reasonable selection is more directly related to the operating cost of the pumping station. The general domestic water supply pressurization station usually uses centrifugal pumps, which have the advantages of simple structure, no pulsation of infusion, and simple flow adjustment. According to the actual situation of the project, first select the type of centrifugal pump, and consider the following. Follow the editor of CMД-18 Water pump to learn more about it!
1. Decide which characteristic pump to choose according to the characteristics of the medium. Such as clean water pumps, corrosion-resistant pumps, or chemical process pumps and impurity pumps. When the medium is a precious or radioactive substance that is not allowed to leak, consider using a non-leakage pump (such as a canned motor pump, a magnetic pump, etc.) or a double-end mechanical seal with a leakage collection and leakage alarm device. If the medium is volatile liquid such as liquefied hydrocarbon, low cavitation margin should be used, such as a cylinder pump.
2. Choose horizontal pumps and vertical pumps (including submerged pumps and pipeline pumps) according to site installation conditions.
3. Choose single-suction pump, double-suction pump, or small-flow centrifugal pump according to the flow rate.
4. Choose single-stage pumps, multi-stage pumps, or high-speed centrifugal pumps according to the height of the head.
After the above items are determined, the type, series and material of the appropriate pump can be selected according to the characteristics of the different series of pumps in various types of pumps and the conditions of the manufacturer, and then the pump model can be determined according to the samples and relevant parameters provided by the pump manufacturer .
The above is the editor of CMД-18 Water pump tells the knowledge of pump parameter selection!