刘家峡2号机组水轮机结构设计与CFD分析本科毕业设计1.doc

毕业设计（论文） 题 目 刘家峡2号机组水轮机 结构设计与CFD分析 专 业 热能与动力工程 班 级 动 09*班 学 生 *** 指导教师 廖伟丽 教授 2013 年 刘家峡2号机水轮机结构设计 与CFD分析 摘 要 本次毕业设计的内容主要分为两部分：水轮机结构设计和单周期导叶内部流动的CFD分析。 结构设计方面是以刘家峡水电站的2号机组为设计对象。设计过程通过充分查阅水轮机设计手册和相关资料，对水轮机各个部分进行结构设计，包括水轮机埋入部件、导水机构、转动部件、减压装置、主轴密封、水导轴承等部分的结构设计。然后完成总装配结构图、导叶布置图、导水机构装配图和控制环零件图等设计任务。设计的主要内容包括两个部分。第一部分是根据给定的电站基本资料进行水轮机的基本参数计算，第二部分是进行水轮机的总体结构设计，第三部分是对导水机构进行设计。CFD分析方面主要是通过对单周期导叶内部流动的CFD分析来研究流域内任一点的速度，压力和流线分布。 本次设计主要采用AutoCAD和CFD软件绘图。 关键词：刘家峡水电站，2号机组，结构设计，Autocad，CFD分析 The Structural turbine Design of #2 in Liujiaxia Hydropower Station and the analysis of CFD ABSTRACT The content of this graduation design is mainly divided into two parts: the structure of water turbine guide vane design and single cycle CFD analysis of internal flow. Structure design of unit 2 in liujiaxia hydropower station as the design object.The process of design is to design parts of the turbine through fully consulting the turbine design manuals and related information, including embedded turbine components, guide apparatus, rotating parts vacuum devices, shaft seal, guide bearing and other parts of the turbine. these tasks such as the spiral case and the draft tube of hydraulic design, the guide water body assembly drawing, the general assembly drawing of the turbine, turbine guide vane arrangement drawing and the parts of main -axis design should be completed. The main content of the design includes three parts. The first part is the basic data based on the given basic parameter of the turbine of hydroelectric station. The intention of the second part is to design the overall structure of the turbine. The third part is to design water distributor. CFD analysis is mainly based on the single cycle vanes internal flow CFD analysis to study the basin as a point of velocity, pressure and flow distribution. The AutoCAD and CFD is adopted to draw for the design. KEY WORDS: Francis turbine,Liujiaxia hydropo