A method for precise selection of centrifugal pump units

Abstract

The invention discloses an accurate type selection method for a centrifugal pump unit. The method is characterized by comprising the following steps of 1) determining a specific centrifugal pump type based on given flow, lift and rotating speed; 2) accurately calculating a cutting impeller diameter meeting input parameter requirements based on the centrifugal pump type; 3) based on the calculated cutting impeller diameter, accurately calculating a performance curve equation under the cutting impeller diameter by adopting a least square method; 4) selecting an optimal matching motor for a centrifugal pump under a specific impeller diameter by adopting a motor matching algorithm; and 5) according to the centrifugal pump unit under the specific diameter obtained in the steps 1)-4), performing sorting from high to low according to efficiency, and automatically outputting product performance parameters and installation size maps of centrifugal pumps, thereby finishing accurate type selection work of the centrifugal pumps. According to the method, the centrifugal pump unit meeting the requirements can be automatically screened out; accurate type selection and optimal configuration of the centrifugal pump unit are realized; and a centrifugal pump operation system is enabled to achieve the purposes of high efficiency and energy conservation.

Description

technical field [0001] The invention belongs to the field of type selection methods for centrifugal pump units, in particular to a precise type selection method for centrifugal pump units, which is mainly used for fast and accurate type selection of centrifugal pumps or centrifugal pump units. Under the premise, the centrifugal pump unit that meets the requirements is automatically screened out, and the selected pump models are sorted according to efficiency from high to low, so as to facilitate the precise selection of the designer and realize the accurate selection and optimization of the centrifugal pump unit configuration, so that the final centrifugal pump operation system can achieve the purpose of energy saving and emission reduction. Background technique [0002] The traditional centrifugal pump selection method is to determine the centrifugal pump model to be selected by consulting a large number of centrifugal pump product samples based on the flow, head and speed ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing centrifugal pump type selection method has the following disadvantages: 1) the calculation workload required for manual type selection is large, complex and professional, and the efficiency of type selection work is low. And the accuracy is not enough; 2) It is impossible to quickly and effectively obtain the centrifugal pump model with the best efficiency; 3) It is impossible to quickly and accurately determine the required supporting motor power

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