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A smooth modeling method for a centrifugal pump volute

A centrifugal pump and volute technology, which is applied in the field of UGNX-based centrifugal pump volute smoothing modeling, can solve problems such as modeling distortion and surface connection is not smooth, and achieve the effect of natural surface transition, improve modeling quality, and reduce modeling costs.

Active Publication Date: 2019-05-03
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A smooth modeling method for a centrifugal pump volute
  • A smooth modeling method for a centrifugal pump volute
  • A smooth modeling method for a centrifugal pump volute

Examples

Experimental program
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Embodiment

[0101] Carry out modeling according to the complete smooth molding method of the centrifugal pump volute:

[0102] a. Draw the three-dimensional sketches of the spiral part and the diffuser part of the centrifugal pump volute respectively.

[0103] Wherein, the radius of the tongue-separating arc 23 is 3 mm. The radius of the fourteenth upper corner arc 213 of the fourteenth section 14 is 13 mm; the radius of the first upper corner arc 215 of the first section 1 is 15 mm. The radius of the fifteenth upper corner arc 218 of the fifteenth section 15 and the ninth upper corner arc 210 of the ninth section 9 are both 10mm; the radius of the fifteenth lower corner arc 219 of the fifteenth section 15 is 21.5mm , the radius of the ninth lower corner arc 222 of the ninth section 9 is 22 mm.

[0104] b. Generate the 3D surface of the spiral part and the diffuser part of the centrifugal pump volute.

[0105] c. Draw isoparametric curves and bridging curves to generate septum curved s...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 丁涛孔维双施正香赵洋王朝元
Owner CHINA AGRI UNIV
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