Abstract: With the advancement of science and technology and the update of the design and construction standards of spherical tanks, some of the spherical tank design systems developed at early stage cannot adapt to today's computer environment and production needs. Therefore, based on the actual spherical tank design process and computer-aided technology and according to the current spherical tank design standards, C# is selected as the programming language and .NET as the development platform. Then guided by object-oriented programming ideas, a set of modular design system for spherical tanks that can be applied to today's computer environments is developed based on current standards and design processes for spherical tank design with the application of AutoCAD and ANSYS as supporting software. The system can improve the accuracy of the spherical tank design, shorten the design time and reduce the complexity of the design effectively. It can also provide a basis for further research and development of similar systems.

Key words: spherical tank, modularization, computer-aided technology, design system