How should beginners get started with selecting pumps? I hope fellow sailors can give me some advice!
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This post was last edited by zhaohh3211 on 2018-5-23 10:14. How should one get started with choosing a new pump? This is my first time dealing with the selection of pumps, so I’ve come up with a rough idea. I wonder if this will work; I hope fellow sailors can help me improve it? 1. Select the type and material of the pump based on the medium, temperature, and pressure ； 2. Determine the pump head based on the height difference of the material to be transported ； 3. Determine the power required by the pump based on the amount of material to be transported. There are also some issues regarding the advantages and disadvantages of the pumps chosen; there must be quite a few contraindications as well! Make sure not to choose the worst option, or you’ll be laughed at.
1. Based on the required head, several pump series models with heads that meet the specifications but varying flow rates are initially selected from the centrifugal pump spectrum or the product characteristic curve of the pumps. 2. Determine the number of pumps required for each type, based on the designed flow rate of the pumping station or pump system, as well as the designed flow rate of each pump type. 3. Based on the preliminarily selected centrifugal pump, determine the pipe diameter and the specific layout of the piping system; create the characteristic curve of the piping system. Then, using the pump performance curve and the piping system’s characteristic curve, identify the operating points at the maximum, design, and minimum actual head values. It is required that the operating point fall within the high-efficiency range of the pump. The head and flow rate meet the requirements, cavitation does not occur, and the power machinery is not overloaded. If the requirements are not met, adjustment measures can be taken or a different pump type selected to ensure it operates as much as possible within a reasonable range. 4. Determine the type based on the properties of the liquid to be transported and the operating conditions. 5. Determine the pump model (selected from a catalog or product list) based on the flow rate (usually determined by the production requirements) and the head required in the pipeline. 6. When the viscosity and density of the liquid to be pumped differ significantly from those of water, it is necessary to calculate the pump’s characteristic parameters: flow rate, head, and shaft power. 7. When selecting a centrifugal pump, several different models may meet the requirement of operating within the optimal range. In such cases, it is possible to determine the operating point for each pump, compare their efficiencies at those points, and select the best one. I’m a beginner too; if you think what’s mentioned above is correct, go take a look at: http://www.llzypump.com/daogou/cb/107.html, http://www.llzypump.com/daogou/cb/114.html. I copied it from what’s written there.
The Petroleum and Chemical Engineering Design Manual, Volume 3: Chemical Unit Processes, explains in detail how to select pumps
Of course, factors such as the efficiency, power, energy consumption, floor space, and maintenance requirements of the pump also need to be considered