煤油冷却器的设计..docxVIP

开封大学化学工程学院毕业设计 摘要 本文对煤油冷却器进行了设计，主要包括传热设计、换热器的结构和强度设计。 传热设计主要是根据给定的工艺设计条件初选换热器类型为固定管板式换热器，估算换热面积；校核传热系数，并计算出实际的换热面积，经验证传热面积符合设计要求；管程及壳程的压力降经计算满足工艺要求。换热器的结构设计主要包括换热器内各零部件（如接管、折流板、定距管、管箱、鞍座、膨胀节等）的设计。强度设计包括对封头和筒体壁厚进行设计计算；对开孔处进行开孔补强计算并确定补强圈的尺寸；对管板和膨胀节进行壁厚设计和应力校核，结论表明各承压元件处的强度设计均满足强度要求。 关键词：固定管板式换热器；传热；强度 Abstract The design manual is about the kerosene cooler, which include the heat transfer calculation of heat exchanger, the structure and the strength calibration of heat exchanger. The heat transfer calculation process is based on the given design conditions to choose the fixed tubesheet heat exchanger, and then, estimate the heat-transfer area. Meanwhile the process above still include checking heat transfer coefficient and the calculation of the actual heat transfer area ,which can meet the design requirement .The pressure drop is calculated and meet the technical requirement . The design of the structure is just depending on the selected type of heat exchanger to design the heat exchanger’s components and parts , such as vesting ,baffled plates, the spacer pipe , tube boxes, saddles and the expansion joint. The strength calibration includes the thickness calculation of shell cover and the shell. Based on the opening reinforcement calculation, reinforcement pad can be determined. The thickness of tube sheet and the expansion joint is calculated, and then the stress is checked. The results show that the pressure-bearing components can meet the intensity requirements. Key word: Shell-Tube heat exchanger; heat transfer; strength. 目录 1 绪论 .........................................................................................................................5 1.1 换热器的应用 .................................................................................................5 1.2 换热器的主要分类 .........................................................................................5 1.3 换热器的优化设计 .........................................................................................