锅炉膜式壁管屏翻身吊钩安全性的有限元分析

发布时间：2019-03-13 15:36

【摘要】：随着我国经济全球化进程的不断加快,对电力的需求日益增加,进而也加大了对电站锅炉的需求量,而膜式壁作为电站锅炉的重要组成部分,在锅炉制造中起着举足轻重的作用。现代电站锅炉膜式壁均采用钢管加扁钢双面焊接而成,将钢管和扁钢用连续焊缝拼接方法达到成品宽度的管屏。而由于焊接工艺一般无法实现仰焊,因此必须将膜式壁进行翻身后才能进行焊接工艺,为此,上海锅炉厂进过多年的研究,自主设计研发了专门用于锅炉膜式壁翻身工艺的“锅炉膜式壁翻身吊钩”。本文使用UG NX软件对翻身吊钩结构进行几何建模后,将其导入ANSYS软件中,并对几何模型进行了修改,建立了有限元模型,在利用ANSYS对其结构进行静力分析的基础上,将ANSYS计算结果导入ncode软件后,使用ncode软件对翻身吊钩进行了疲劳寿命分析。本文首先对UG NX、ANSYS及ncode软件进行了简要的介绍,为翻身吊钩的有限元分析做好准备工作；其次,以翻身吊钩结构为研究对象,利用UG NX及ANSYS建立了翻身吊钩的几何模型及有限元模型,对吊钩建模过程进行了研究及简要的阐述；再次,对翻身吊钩的静态特性进行深入研究,对吊钩进行静态安全性能分析评价；最后,根据静态计算结果,对翻身吊钩的疲劳寿命进行了深入的分析与研究,从而完成对锅炉膜式壁翻身吊钩的安全性有限元分析。
[Abstract]:With the accelerating process of economic globalization in China, the demand for electric power is increasing day by day. Furthermore, the demand for power station boilers is increased, and the membrane wall is an important part of power station boilers. It plays an important role in boiler manufacture. The membrane wall of modern power station boiler is welded by steel pipe and flat steel on both sides. The pipe screen of finished product width is achieved by continuous weld seam splicing method between steel pipe and flat steel. Because the welding process can't realize the back welding, the film wall must be turned over before the welding process can be carried out. For this reason, Shanghai Boiler Factory has been studying for many years. Self-designed and developed "boiler film wall turn-over hook" specially used in the process of boiler film-type wall turn-over. In this paper, the UG NX software is used to model the lifting hook structure, and then it is imported into the ANSYS software. The geometric model is modified and the finite element model is established. On the basis of the static analysis of the structure by using ANSYS, The results of ANSYS calculation were imported into ncode software, and the fatigue life of the lifting hook was analyzed by using ncode software. In this paper, the UG NX,ANSYS and ncode software are introduced briefly in order to prepare for the finite element analysis of the hooks. Secondly, the geometric model and finite element model of the hooks are established by using UG NX and ANSYS, and the modeling process of the hooks is studied and described briefly. Thirdly, the static characteristics of the hooks are deeply studied, and the static safety performance of the hooks is analyzed and evaluated. Finally, according to the results of static calculation, the fatigue life of the rollover hook is deeply analyzed and studied, thus the finite element analysis of the safety of the boiler membrane wall lifting hook is completed.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：X933.2

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