离心泵闭式叶轮反求技术研究  

Study of the Reverse-solution-seeking Technology for Closed Impellers in Centrifugal Pumps

作　　者：唐健[1] 赖喜德[1] 宋威[1] 张伟[1] 

机构地区：[1]西华大学能源与动力工程学院,四川成都610039

出　　处：《热能动力工程》2015年第3期436-441,497,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目(51379179);西华大学"西华杯"大学生科技创新项目(2014091);西华大学研究生创新基金资助项目(ycjj2014179)

摘　　要：采用三维激光扫描仪采集模型数据,利用激光三角法和叶轮快速曲面重构法相结合开发出了一套适用于离心泵闭式叶轮的叶轮反求方法。借助蜡模辅助成型技术测量叶轮内部流道,解决了激光扫描无法采集封闭流道的数据问题;基于ICP(迭代最近点算法)数据对齐理论进行流道与盖板精确定位,提出了一种基于"点-三角网格-曲面片-曲面"和"点-线-面"相结合的曲面重构方法,提高了建模精度与效率。通过某离心泵闭式叶轮重构实例,利用水力性能模拟,验证了该方法的可行性。To quickly assimilate and absorb advanced technologies relating to some blades of centrifugal pumps both in domestic and abroad excellent in performance and conduct a retrofit design,a three-dimensional laser scanner was used to acquire the data of models and in combination with the quick curved surface restructuring method for impellers,the laser triangle method was employed to develop a set of reverse solution seeking methods for closed impellers of centrifugal pumps. With the help of the wax-molding shape-taking technology,the flow passages inside the impeller were measured,solving the problem that the data of a closed passage cannot be acquired by using the laser scanning method. A precision positioning of a flow passage and its cover plates was conducted based on iterative closest point( ICP) data alignment theory and a curved surface restructuring strategy based on the 'point-triangle grid-curved surface patch-curved surface'in combination with 'point-line-surface'was proposed,thus enhancing the modeling precision and efficiency. With a closed impeller in a centrifugal pump serving as an example,the feasibility of the method in question was verified by utilizing the hydraulic performance simulation.

关 键 词：离心泵 闭式叶轮 反求 曲面重构 水力性能模拟 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]