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通常使用的离心泵叶轮水力设计的CAD系统均注重提高设计过程的自动化程度，但在叶轮水力设计过程中，技术参数的选用和前后盖板的型线设计随着经验的不断积累均发生一些变化，因此，有必要研制开发具有更大灵活性的CAD系统。根据Bener曲线拟合方法，介绍了离心泵叶轮采用交工方式进行设计的CAD系统的实现方法，并在Windows开发环境下采用MC7．0程序设计系统给予了具体的实现，弥补了以往心泵叶轮CAD系统的某些缺陷。
Commonly used centrifugal pump impeller hydraulic design of CAD systems focus on improving the degree of automation of the design process, but in the hydraulic design process of the impeller, the selection of technical parameters and the design of the front and rear cover profile line with the accumulation of experience have some changes Therefore, it is necessary to develop a more flexible CAD system. According to the Bener curve fitting method, the paper introduces the realization method of centrifugal pump impeller design CAD system, and in the Windows development environment using MC7.0 programming system to give a concrete realization to make up for the previous heart pump impeller CAD Some defects of the system.