摘要微生物的活动可能导致食品变质，微生物的活动也可能会造成生产企业的重大利 益损失，更会对食用者的身体健康造成危害。因此，食品生产行业一直都非常重视对 于食品的消毒灭菌工作。改革开放以来，我国工业技术取得了长足发展，但是我国食 品生产企业对于食品的灭菌工艺仍大多采用传统的间歇灭菌技术，连续灭菌技术的广 阔发展空间有待开发，食品加工行业也迫切需要研发新的技术。86009

针对上述问题，团队设计了一款连续灭菌生产线，该生产线可以连续完成灭菌过 程的六大阶段，实现批量连续灭菌，本文主要论述其中的主筒部分及热力学分析。论文首先探讨了当前国内外食品加工领域所常用的灭菌工艺，然后转入对灭菌生 产线总体结构的介绍，由总体生产线引出对主筒部分总体结构的设计。

其次，对生产线的灭菌主筒子系统和瓶筒子系统，分别进行了相应的质量衡算和 能量衡算，并建立了数学模型。由数学模型出发，根据灭菌的工艺要求，设定了各流 程压力和温度，进而计算出了各流程所需时间和主筒主要结构尺寸，并在完成主要零 部件设计的同时，绘制了主筒内部结构示意图。

再次，进行了应力分析。通过运用力学知识对主筒和鞍座进行了应力载荷分析。 最后，运用 ANSYS 软件，对瓶筒灭菌进行了瞬态热力学分析，分析瓶筒在灭菌主筒中各个流程的温度分布，判断瓶筒内液体的灭菌效果，验证了数学模型的科学性和 主筒结构设计的合理性。

通过上述工作，完成了对于灭菌自动线主筒部分的设计、校核与热力学分析，实 现了连续灭菌自动线设计要求。

毕业论文关键字：灭菌自动线；数学建模；结构设计；热力学分析

Abstract The activities of bacteria and other microorganisms may lead to food spoilage, but also the focus of the field of food safety issues。 Microbial activities may cause a significant loss of interest in the production of enterprises, but also harm the health of the human body。 Therefore, the food industry has always attached great importance to the work of disinfection and sterilization of food。 Since the reform and opening up, China's industrial technology has made great development, but China's food production enterprises for food sterilization process are still mostly used the traditional intermittent sterilization technology, continuous sterilization technology of broad space for development to be developed, the food processing industry is also an urgent need to research and development of new technology。 In view of the above problems, the team designs a continuous sterilization production line, the production line can be continuously completed six stages in the sterilization process, realize the batch continuous sterilization, this paper mainly discusses the main tube part and thermodynamic analysis of。

This paper first discusses the current domestic and foreign food processing areas commonly used in the sterilization process, and then transferred to the general structure of the production line of the introduction, from the overall production line to the main tube part of the overall structure of the design。

Secondly, the production line main package sterilization system and bottle package system, respectively, were the corresponding mass balance and energy balance, and a mathematical model is established。 Starting from the mathematical model, according to the requirements of the sterilization process, set the process pressure and temperature, then calculated the processes required major structural size of the time and the main cylinder, and completed the design of the main parts of the at the same time, draw the structure of the main cylinder internal schematic diagram。

Again, the stress analysis is carried out。 By using the knowledge of mechanics of the main cylinder and the saddle of stress load analysis。