How to select multi-stage fire pump?

Multi-stage fire pump uses a wide range of widely used in environmental protection, water treatment, fire and other industries. Multi-level fire pump safe, leak-proof, corrosion-resistant. Choose a cost-effective multi-stage fire pump products can not only improve product efficiency, but also reduce costs. Therefore, the selection of multi-stage fire pump is particularly important. Multi-level fire pump selection 1, the use of pump performance integrated spectrum pump selection. The centrifugal pump, axial flow pump, mixed flow pump all the work area integrated drawing on the same map, which constitutes a comprehensive spectrum of agricultural water pump spectrum, the diagram is more complex, but the use of more convenient. According to the determined design flow and the design lift, on the type spectrum, first on the ordinate with the design lift to find out the head requirements, and the flow of several pumps, and then on the abscissa to design flow to determine the selection Which kind of water pump. If the design flow is large, the single pump failed to meet the requirements, consider multi-machine operation, but should pay attention to try to use the same type of pump to facilitate the construction and installation, management and maintenance. 2, the use of ISG, IRG vertical pipeline pump performance specifications selected pumping type. Pumping plant in the catalog are provided in this form, the performance of each model in the table has three lines of data, what exactly is the behavior of it? General design flow and design of the head should be listed with the performance of the middle line value Consistent, or close, but must fall in the upper and lower two-line range, because this range is high efficiency pump operation area, this type of pump is considered to meet the actual needs of the pump is selected . 3, the use of ISW horizontal pipe centrifugal pump selection table election pump type. According to the determined design lift and design flow, in the selection table, the crosshead searches for the lift value that matches or is close to the design lift; then, the flowmeter value that is consistent with or close to the designed flowrate is found , Intersect vertically and horizontally in small squares, it marked the pump model, the initial selection of pump. But sometimes there are two types of pumps to meet the design requirements, this time, the two pumps can be compared for the program, the technical and economic analysis, and then select one of the appropriate pump. This choice of pump method is relatively simple and fast. This article belongs to Industrial Internet (Xiamen) Technology Co., Ltd. All are welcome to reprint, please indicate the author and source. Author: Asian pumps Network Editor: Yue Lijuan (QQ / micro letter:) starting: http: //beng.liuti.cn/ (service hotline:)

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