A MODERN PUMP DESIGN PROCESS FOR HIGHER EFFICIENCY AND PRODUCT ACCURACY

摘要

This paper describes an innovative engineering process for the design of a new split-case, double-suction, and single-stage centrifugal pump. In order to achieve high pump efficiency and procure accurate and reliable castings, a process was developed utilizing a global network of engineering resources, Computational Fluid Dynamics (CFD) codes, 3-dimensional (3-D) solid modeling, Finite Element Analysis (FEA), and 3-D inspection tools.The hydraulic components of the pump are designed using in-house hydraulic design tools, empirical test data, and proven CFD technology. Once verified, these designs, in the form of 3-D surfaces, are directly exported to solid-modeling software, where the pump's mechanical design can be completed. Finite Element Analysis (FEA) is used to analyze and help refine the final design before 3-D solid models of the pump casing and impeller are sent to the pattern maker. The pattern maker reviews the models before the final pattern equipment is generated. Once first-article castings are produced, a 3-D coordinate measuring machine is used~by generating the 3-D surfaces of the hydraulic passageways~to inspect the castings and compare them directly to the original solid model.