精馏塔关键部件的一体化设计与强度校核技术研究

发布时间：2018-04-13 23:25

本文选题：流固耦合 + 塔内件　；参考：《天津大学》2015年硕士论文

【摘要】：本论文以某石化项目常减压装置中减压塔为研究对象,利用AutoLISP计算机语言进行AutoCAD二次开发,实现减压塔内件的程序化绘制及校验,自动将CAD中的原始信息导入数据库文件,减少设计工作中大量重复劳动,大幅提高施工图纸的标准化及准确程度;利用ANSYS有限元分析软件对填料支撑格栅、填料支撑梁、集油箱、塔盘等主要塔内件进行强度核算分析,评估其结构是否满足工况下的强度和刚度要求,并根据计算结果得出填料支撑格栅的加强方式,确定大直径塔中填料支撑梁适宜选用桁架梁形式,改进集油箱的连接形式;通过模拟计算与实际使用状况的比较结果分析内件失效原因并优化结构;利用ANSYS Workbench中多物理场耦合计算模块,研究流固耦合场作用下,减压塔塔盘及其支撑结构的应力场分布规律,结合仿真结果,对塔盘的支撑结构进行再次强度核算,与忽略流体场作用的塔器的有限元传统分析方法进行了对比分析,阐述了两种方法的优缺点,并结合工程现场的实际情况,提出减压塔工作中塔盘发生机械破坏的可能原因以及预防措施。
[Abstract]:This paper takes the vacuum tower in the atmospheric and vacuum unit of a petrochemical project as the research object, uses AutoLISP computer language to carry on the AutoCAD secondary development, realizes the programming and checking of the inside part of the decompression tower, and automatically imports the original information from the CAD into the database file.Reduce a large number of repetitive work in the design work, greatly improve the standardization and accuracy of construction drawings; use the ANSYS finite element analysis software to calculate and analyze the strength of the main tower internals, such as packing support grille, packing supporting beam, oil collecting tank, tower tray, etc.To evaluate whether the structure meets the strength and stiffness requirements under the working condition, and according to the calculation results, the strengthening mode of the packing support grille is obtained, and the suitable truss beam form is determined to improve the connection form of the oil tank.By comparing the results of simulation calculation and actual use, the failure reasons of inner parts are analyzed and the structure is optimized. By using the multi-physical field coupling calculation module in ANSYS Workbench, the fluid-solid coupling field is studied under the action of fluid-solid coupling field.The stress field distribution of the pressure relief tower tray and its supporting structure is analyzed. Combined with the simulation results, the restrength calculation of the tray supporting structure is carried out, and compared with the traditional finite element analysis method of the tower which neglects the fluid field.This paper expounds the advantages and disadvantages of the two methods, and puts forward the possible causes of mechanical failure of the tray in the working of the decompression tower and the preventive measures combined with the actual situation of the engineering site.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ053.5

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