排灌机械工程学报
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排灌机械工程学报  2012, Vol. 30 Issue (3): 351-355    DOI: 10.3969/j.issn.1674-8530.2012.03.020
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液压隔膜泵用环状U型隔膜挠曲变形分析
邓鸿英1, 张生昌1, 郑英臣2
(1.浙江工业大学机械工程学院, 浙江 杭州 310032; 2.杭州杭氧低温液化设备有限公司, 浙江 杭州 310004)
Deflection analysis of annular Udiaphragm in hydraulic diaphragm pump
 DENG  Hong-Ying-1, ZHANG  Sheng-Chang-1, ZHENG  Ying-Chen-2
(1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, China; 2. Hangzhou Hangyang Cryogenic Liquefy Equipment Co. Ltd., Hangzhou, Zhejiang 310004, China)
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摘要 为了建立新型液压隔膜泵用环状U型隔膜基础理论体系和设计方法,借助Ansys有限元分析软件的非线性分析工具,对其挠曲变形与变形量的关系进行了分析.以液压隔膜泵样机用环状U型隔膜为物理模型,建立了具有几何和材料双重非线性特性的环状U型隔膜的薄壁中空双层壳体有限元模型;在工作范围内,对模型固定支撑端施加固定约束,运动支撑端施加位移约束,内外表面施加面载荷,分析了模型在不同压缩、拉伸位移载荷下的挠曲变形;应用差分进化算法对环状U型隔膜挠曲变形的位移数据进行曲线拟合,通过控制均方差、相关系数和决定系数等判断标准,反复修正拟合曲线,总结了其挠曲边线的运动规律,获得了其挠曲变形曲线的等效解析解,推导了其工作容积理论计算公式;通过工程实例计算,验证了工作容积理论计算公式的可行性,为形成液压隔膜泵用环状U型隔膜工作机理及隔膜结构和优化设计方法提供了理论基础.
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邓鸿英
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郑英臣
关键词U型隔膜   挠曲变形   液压隔膜泵   工作容积   解析解     
Abstract: To establish a basic theory system and design method for a new type of annular Udiaphragm in hydraulic diaphragm pumps, the relation between Udiaphragm deflection and deformation quantity was analyzed by using the nonlinear analysis function in finite element software Ansys. A thin, hollow, double shell Udiaphragm finite element model with geometry and material nonlinear character was established for the annular Udiaphragm used in the prototype of hydraulic diaphragm pump. The deflection of the Udiaphragm model was analyzed under different compression and stretch displacements when the displacements of the supported end were fixed, the displacements of the free supported end were prescribed and the pressure loads were applied on both sides of the Udiaphragm. The computed displacements of deflection were fitted by using differential evolution method where the correct fitting curves were determined by controlling mean square error and correlation coefficient and so on. The Udiaphragm movement was clarified and an empirical relation for the deflection was obtained, eventually a theoretical formula for camber working volume was given. All the results above will provide a theoretical basis for working mechanism and design optimization of an annular Udiaphragm.
Key wordsUdiaphragm   deflection   hydraulic diaphragm pump   camber working volume   analytic solution   
收稿日期: 2011-11-18; 出版日期: 2012-04-10
基金资助:

浙江省科技厅重大专项(2007C11063)

通讯作者: 邓鸿英(1976—),女,湖北荆门人,讲师(dhyty@zjut.edu.cn),主要从事过程设备的设计和控制研究.   
作者简介: 张生昌(1956—),男,江西新干人,教授(zsc666@zjut.edu.cn),主要从事泵阀的设计和开发.
引用本文:   
邓鸿英,张生昌,郑英臣. 液压隔膜泵用环状U型隔膜挠曲变形分析[J]. 排灌机械工程学报, 2012, 30(3): 351-355.
DENG Hong-Ying,ZHANG Sheng-Chang,ZHENG Ying-Chen. Deflection analysis of annular Udiaphragm in hydraulic diaphragm pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 351-355.
 
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[1] 邓鸿英1, 张生昌1, 郑英臣2. 环状U型隔膜应力分析和结构优化设计[J]. 排灌机械工程学报, 0, (): 16-.

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