Reverse impeller hydraulic power design method

Abstract

The invention discloses a reverse impeller hydraulic power design method. The method is characterized by comprising the following steps of: 1, determining design parameters as follows: flow Q=30m3 / hs,lift H=6m, revolving speed n=2850r / min, efficiency <Eta>=45.7%; 2, carrying out 3D scanning and surface modeling; 3, carrying out impeller flow line extraction and surface reconstruction; 4, carryingout CAD impeller hydraulic power graph restoration and correction; 5, impeller three-dimensional reconstruction; 6, carrying out CFD analysis and rapid prototyping or rapid molding, and when the CFDanalysis in unqualified, returning to step 4; and 7, when both the CFD analysis and the rapid prototyping or rapid molding are qualified, entering performance test and comparison. According to the method, the product conception time can be shortened to the greatest extent through a reverse design method, under the reference of original products, the unpredictability can be reduced, and the experiment time and frequency can be properly decreased so as to reduce the cost.

Description

technical field [0001] The invention relates to a hydraulic inverse design method of an impeller. Background technique [0002] The hydraulic forward design of the impeller is a process of "starting from scratch", which requires hydraulic calculation and comparative analysis in advance, which often requires inspiration and careful thinking, which is extremely time-consuming. [0003] The hydraulic forward design of the impeller has certain limitations and unpredictability. Even experienced designers design according to the orthogonal test method, which has certain experience and cannot guarantee that the expected effect can be achieved. [0004] Impeller hydraulics The impeller hydraulics designed by the forward design generally have multiple schemes, which need to go through many experiments and tests, which not only takes a long time period, but also wastes manpower and material resources, and the design cost is high. Contents of the invention [0005] The technical pro...

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Problems solved by technology

[0002] The hydraulic forward design of the impeller is a process of "starting from scratch", which requires hydraulic calculation and comparative analysis in advance, which often requires inspiration and careful thinking, which is extremely time-consuming

[0003] The hydraulic forward design of the impeller has certain limitations and unpredictability. Even experienced designers design according to the orthogonal test method, which has certain experience and cannot guarantee that the expected effect can be achieved.

[0004] Impeller hydraulics The impeller hydraulics designed in the forward direction generally have multiple schemes, which need to go through many experiments and tests, which not only takes a long time, but also wastes manpower and material resources, and the design cost is high

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