A Smooth Modeling Method for Centrifugal Pump Volute

Abstract

The invention belongs to the technical field of three-dimensional modeling of centrifugal pumps, and particularly relates to a smooth modeling method for a volute of a centrifugal pump. According to the method, modeling is carried out based on UG NX, tools such as an equal-parameter curve and a bridging curve are adopted to be used in cooperation, and the problems that according to a common volutemodeling method, manual visual inspection is adopted, modeling distortion is likely to happen, and curved surface connection is not smooth when the volute partition tongue part is processed can be effectively solved. According to the method, the complete smooth transition between the curved surfaces of the separation tongue part of the centrifugal pump volute can be realized, so that no further processing is needed in the actual manufacturing process of the centrifugal pump, and the modeling quality is improved while the modeling cost is reduced. According to the volute modeling completed through the method, the modeling structure is clear, curved surface transition is natural and attractive, and the method can improve the precision and accuracy of centrifugal pump CFD simulation, finiteelement analysis and mold numerical control machining.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional modeling of centrifugal pumps, in particular to a UG NX-based smooth modeling method for a centrifugal pump volute. Background technique [0002] The pressure water chamber of the centrifugal pump, also known as the volute, is one of the key flow-passing parts of the centrifugal pump. It can convert the kinetic energy of the fluid into pressure energy, eliminate the velocity circulation, and have a great impact on the hydraulic performance of the centrifugal pump. In the design and manufacture of centrifugal pumps, the three-dimensional modeling of the volute is one of the key steps in CFD simulation, finite element analysis, and CNC machining of molds. As the part with the most complicated flow in the volute, the diaphragm tongue is directly related to the accuracy of numerical simulation and the quality of pump body manufacturing with the smoothness of its three-dimensional modeling su...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a smooth modeling method for centrifugal pump volute, the method is based on UG NX for modeling, using isoparametric curves and bridging curves and other tools in conjunction with the use, can effectively solve the general volute modeling method relying on human visual inspection As well as the problems of shape distortion and uneven surface connection that are prone to occur when dealing with the volute tongue part

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