厌氧发酵搅拌轴结构有限元分析的研究

发布时间：2018-01-11 13:33

本文关键词：厌氧发酵搅拌轴结构有限元分析的研究　出处：《昆明理工大学》2011年硕士论文　论文类型：学位论文

更多相关文章： 搅拌轴 有限元 结构分析 钢丝绳

【摘要】：本文中所研究的搅拌轴是指带有搅拌臂及叶片结构的一种装置,其主要是应用在有机厌氧发酵装置中,它是构成厌氧发酵装置的重要组成部分,每种装置都要研究它的安全性和可靠性,文中的搅拌轴作为厌氧装置中机械搅拌中的重要部件,当然也不例外,它的安全与可靠直接关系到厌氧发酵装置的安全运行及其工作的连续性。由于本文中的搅拌轴属于超长轴系列,即使只在重力的作用下也会产生变形,基于这种情况,有必要对搅拌轴的受力及变形等情形进行研究,这将有助于为今后在改善搅拌轴的设计方面提供理论依据。本文在利用昆船公司软件平台的基础上,主要对搅拌轴进行了以下研究： (1)对搅拌轴进行挠度分析,找出搅拌轴的变形规律及其变形下的最大挠度,为今后的设计支撑机构提供依据； (2)对搅拌轴进行应力分析,找到了应力危险区以及结构中强度薄弱的部位,为今后在材料的选取和设计等方面提供参考依据； (3)对搅拌轴进行疲劳寿命分析,得出结构的疲劳寿命,提供了机构的安全使用期限： (4)最后根据搅拌轴的变形及厌氧发酵对机械搅拌的实际要求条件,提出可行的改进方案。结果表明,通过对搅拌轴的挠度、应力分析及疲劳寿命预测,为进一步改善搅拌轴结构的受力情况、改进结构,减小搅拌轴的重量及减小设计余量提供了理论依据。本文提供的研究方案可操作性强,对工程应用具有一定的参考价值。
[Abstract]:In this paper, the stirring shaft is studied with a device for mixing arm and blade structure, which is mainly used in organic anaerobic fermentation device, it is an important part of the anaerobic fermentation device, the safety and reliability of it to each device, a stirring shaft in this paper as anaerobic device an important component in Mechanical stirring, of course is no exception, it is directly related to the safety and reliability of continuous safe operation and anaerobic fermentation device. Because of the stirring shaft in this paper belongs to the long axis series, even under the action of gravity will cause deformation, based on this situation, it is necessary to study the stress and deformation conditions of stirring shaft, which will help to provide a theoretical basis for the design in the future to improve the stirring shaft.
Based on using the Kunchuan company software platform, mainly on the stirring shaft are as follows:
(1) to analyze the deflection of the mixing shaft, find out the deformation law of the mixing shaft and the maximum deflection under the deformation, and provide the basis for the design support mechanism in the future.
(2) the stress analysis of the mixing shaft is carried out, and the stress risk area and the weak part in the structure are found, which will provide a reference for future selection and design of the material.
(3) the fatigue life of the mixing shaft is analyzed and the fatigue life of the structure is obtained, and the safety period of the mechanism is provided.
(4) finally, according to the deformation of the mixing shaft and the actual requirements for the mechanical agitation of the anaerobic fermentation, a feasible improvement scheme is put forward.
The results show that the deflection of the stirring shaft, prediction analysis and fatigue life, improved structure for improving stirring force, shaft structure, reduce the weight of the stirring shaft and provides a theoretical basis for reducing the design margin. This research program provides strong operability, which has a certain reference value for engineering application.

【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.2

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