葉輪結(jié)構(gòu)參數(shù)對(duì)離心泵性能影響的研究
[Abstract]:Centrifugal pump is a kind of widely used hydraulic machinery, but the existing design theory is far from perfect, so the performance optimization of centrifugal pump is always a hot topic. The hydraulic components of centrifugal pump are mainly composed of suction chamber, pressure chamber and impeller. As the only hydraulic component of energy transmission, the design of impeller directly affects the hydraulic performance of centrifugal pump. Therefore, the optimization design of centrifugal pump structural parameters has been the focus in the field of pump research. In this paper, a centrifugal pump is used as a reference for hydraulic design, 3D modeling, numerical simulation and internal flow field analysis. In addition, the influence of some impeller structure parameters on pump performance is also studied. The results are useful for the design of centrifugal pump impeller structure parameters. The main research work and conclusions are as follows: 1. Collect and sort out the status quo of centrifugal pump research at home and abroad, and write a summary. 2. Based on the limited data of EW150-315 centrifugal pump and the Technical Manual of Modern pump, the hydraulic design of impeller and volute is carried out. According to the hydraulic design drawing, Creo3.0 is used to model it, and ICEM CFD is used to mesh it. 4. The large eddy simulation of the model pump is carried out by using ANSYS CFX. According to the simulation results, the external characteristics and internal flow field of the model pump are analyzed. In order to study the influence of impeller structure parameters on the performance of centrifugal pump, different impeller structure parameters, such as impeller inlet diameter, impeller inlet edge position, blade envelope angle, blade outlet placement and so on, were selected as research objects. Explore its relationship with centrifugal pump performance. 6. In order to study the error between large eddy simulation and actual test, the model pump was tested by 0.8Q~1.2Q and the data were recorded and compared with the large eddy simulation.
【學(xué)位授予單位】:江蘇大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TH311
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