3D parametric design on trough type liquid distributor based on AutoCAD VBA

Abstract

To reduce the duplicated work and enhance the drawing efficiency in the tower internals design process, this paper introduces a 3D parametric design method by taking the example of trough type liquid distributor. This new method utilizes the inlaid development language Visual Basic of Applications (VBA) to realize the secondary development of AutoCAD, and then establishes a parametric design program. By changing parameters, this program can automatically generate the 3D models of trough type liquid distributor with different sizes. These 3D models are more intuitive and convenient than the common used 2D graphics. At present, there is a great demand for 3D parametric design system in modern industries and design enterprises. © 2012 Springer-Verlag.