离心泵叶轮计算机辅助设计及其运动仿真研究

发布时间：2018-09-04 14:50

【摘要】：离心泵作为一种常见的水力机械,广泛应用于在给水排水及农业工程、工业工程、航空航天、航海工程和能源工程等领域。叶轮是离心泵的核心部件,它的设计速度和质量直接影响产品的研发周期和市场竞争力。本文在了解国内外的叶轮CAD应用的基础上,针对当前叶轮CAD的研究和应用现状的不足,以Pro/E为支撑软件,以面向对象的Visual C++6.0编程语言为开发工具,利用二次开发工具包Pro/TOOLKIT,采用三维叶轮模型与程序控制相结合的方式,实现了叶轮的参数化程序设计。本文的研究内容如下： 1.在一元和三元流动的基础上给出了离心泵及叶轮各参数计算经验公式,为后来模型参数的设计提供了便利。 2.针对传统离心泵设计步骤繁琐的不足,提出了采用4次Bezier曲线来设计叶轮的轴面流线方法,详细介绍了轴面流线的控制方法绘制了叶片的轴面截线和木模图。 3.采用NURBS曲线构造了离心泵叶轮叶片流线通用表达式,利用参数化设计原理,制定了离心泵叶轮三维模型自动生成方案,并阐述了基于Pro/TOOLKIT的离心叶轮三维建模的具体实现方法。 4.在VC++编程环境下,利用Pro/TOOLKIT工具包,采用基于模型的方法,对叶轮模型进行开发,实现叶轮的参数化设计 5.利用Pro/E的Mechanism运动学分析模块,对离心泵叶轮进行运动学分析与仿真,得到并分析了叶轮运动的位置、速度和加速度曲线图。
[Abstract]:As a common hydraulic machinery, centrifugal pump is widely used in water supply and drainage, agricultural engineering, industrial engineering, aerospace, navigation engineering and energy engineering. Impeller is the core component of centrifugal pump, its design speed and quality directly affect the product R & D cycle and market competitiveness. On the basis of understanding the application of impeller CAD at home and abroad, aiming at the deficiency of the current research and application of impeller CAD, this paper takes Pro/E as the supporting software and the object-oriented Visual C 6.0 programming language as the development tool. The parametric programming of impeller is realized by using Pro/TOOLKIT, which combines 3D impeller model with program control. The research contents of this paper are as follows: 1. On the basis of univariate and three-dimensional flow, the empirical formulas for calculating the parameters of centrifugal pump and impeller are given, which provides convenience for the design of the parameters of the later model. In view of the complicated design procedure of traditional centrifugal pump, the method of designing axial streamline of impeller by 4 times Bezier curve is put forward, and the control method of axial streamline line is introduced in detail. The axial section line and woodblock diagram of blade are drawn in detail. The general expression of flow line of impeller blade of centrifugal pump is constructed by using NURBS curve. Based on the principle of parameterized design, the automatic generation scheme of 3D model of impeller of centrifugal pump is established. The realization method of centrifugal impeller 3D modeling based on Pro/TOOLKIT is described. 4. In VC programming environment, the impeller model is developed by using Pro/TOOLKIT toolkit and model-based method, and the parametric design of impeller is realized. The kinematics analysis and simulation of centrifugal pump impeller are carried out by using Mechanism kinematics analysis module of Pro/E. The position, velocity and acceleration curve of impeller motion are obtained and analyzed.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH311

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