大型立式辊磨机关键结构件仿真研究

发布时间：2018-01-24 09:38

本文关键词： 磨盘盘体优化设计分离器动转子叶片流体流场　出处：《西南交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：大型立式辊磨机的研究分析是在水泥生产工艺粉磨设备研发设计中最重要的一项工作之一。目前国、内外对小型立式辊磨机各零部件的设计研究很多,即磨盘直径5.3米以下的各型立式辊磨机已经得到了广泛应用,满足5000t/d以下水泥生产线的粉磨需求,5000t/d以上立式辊磨机主要以进口为主。随着国家节能减排宏观政策调整和大型水泥生产线技术发展,配套5000～10000t/d生产线的粉磨设备技术缺口凸显。本论文以6000t/d配套立式辊磨机的关键结构件磨盘盘体和分离器为研究对象,进行大型立式辊磨机终粉磨系统及装备研究。通过Autodesk Inventor和ANSYS workbench有限元软件的分析运用,论文对关键结构件磨盘盘体的研发过程和设计方法进行了详细的阐述和探讨;以分离器动转子叶片形状对分级区域流场影响分析,提供选形方案。本文主要的研究内容如下:1.在Autodesk Inventor中建立了磨盘盘体的参数化模型,采用ANSYS workbench对磨盘盘体进行了结构优化和结构静力学分析,得到了设计质量小于100T,应力分布合理,安全系数高的设计方案。2.利用ANSYS workbench软件的Modal和Harmonic Response模块,.即模态分析和谐响应分析模块,通过求解磨盘盘体动态特性的问题研究,得到了磨盘盘体共振频率范围和应力分布,还为工艺实际生产位移振动监控设置提供了参考依据。3.通过对分离器流场特性研究,建立了运动微分方程,求解流场进口速度和出口压力,结合流场介质特性,得出了流场边界条件。4.在Autodesk Inventor中建立了分离器分级区域参数化模型,运用ANSYS workbench的fluent流体模块对分离器分级区域流场进行模拟,通过对I、L、Z和水滴四种形状动转子叶片在相同工况下的流场分析,得出了每种叶片的优、缺点和各自的适用范围。本论文的研究成果与内容,可为大型立式辊磨机的结构研究提供参考与借鉴,同时也可以为大型立式辊磨机及类似产品的研发设计提供一定的指导意义。
[Abstract]:The research and analysis of large vertical roller mill is one of the most important work in the development and design of grinding equipment for cement production process. At present, there is a lot of research on the design of parts and components of small vertical roller mill in China and abroad. That is, the grinding disc diameter less than 5.3 meters of all types of vertical roller mill has been widely used to meet the grinding requirements of cement production line below 5000 t / d. The vertical roller mill above 5000 t / d is mainly imported. With the adjustment of national macro policy of energy saving and emission reduction and the development of large cement production line technology. The technical gap of grinding equipment in 5000 t / d production line is obvious. In this paper, the disc body and separator, which are the key structural parts of the 600 t / d vertical roller mill, are taken as the research object. The final grinding system and equipment of a large vertical roller mill were studied and analyzed by Autodesk Inventor and ANSYS workbench finite element software. In this paper, the research and development process and design method of the disc body of the key structural parts are described and discussed in detail. The influence of rotor blade shape on the flow field is analyzed. The main contents of this paper are as follows: 1. The parametric model of the disc body is established in Autodesk Inventor. The structure optimization and structural static analysis of the disc body are carried out by ANSYS workbench. The results show that the design quality is less than 100T and the stress distribution is reasonable. The design scheme of high safety factor. 2. Use Modal and Harmonic Response module of ANSYS workbench software. In the module of modal analysis and harmonic response analysis, the resonance frequency range and stress distribution of the disc body are obtained by solving the dynamic characteristics of the disc body. It also provides a reference basis for the monitoring and setting of displacement vibration in practical production. Through the study of the flow field characteristics of the separator, the motion differential equation is established, and the inlet velocity and outlet pressure of the flow field are solved. Combined with the characteristics of flow field medium, the flow field boundary condition. 4. The parameterized model of classifier classification region is established in Autodesk Inventor. Using the fluent fluid module of ANSYS workbench to simulate the flow field in the classifying region of the separator, the flow field of the separator is simulated. The flow field analysis of four kinds of rotor blades with Z and water droplets under the same working conditions shows the advantages and disadvantages of each blade and their respective application scope. The research results and contents of this paper. It can provide reference and reference for the research of the structure of large vertical roller mill, and can also provide some guidance for the R & D and design of large vertical roller mill and similar products.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ172.632.5

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