化工机械课程设计-管壳式换热器的结构设计.doc

管壳式换热器的结构设计 摘 要 课程设计理论是学生理论联系实际的一次很好的机会，本次实验就管壳式换热器进行一次课程设计，掌握并了解在工业生产中节能、高效、环保等概念。 换热设备在炼油、石油化工以及在其他工业中使用广泛，它适用于冷却、冷凝、加热、蒸发和废热回收等各个方面。 其中，管壳式换热器虽然在换热效率、设备的体积和金属材料的消耗量等方面不如其他新型的换热设备，但它具有结构坚固、弹性大、可靠程度高、使用范围广等优点，所以在各工程中仍得到普遍使用。 管壳式换热器的结构设计，是为了保证换热器的质量和运行寿命，必须考虑很多因素，如材料、压力、温度、壁温差、结垢情况、流体性质以及检修与清理等等来选择某一种合适的结构形式。 对同一种形式的换热器，由于各种条件不同，往往采用的结构亦不相同。在工程设计中，除尽量选用定型系列产品外，也常按其特定的条件进行设计，以满足工艺上的需要（得到适合工况下最合理最有效也最经济的便于生产制造的换热器等等）。 关键词：管壳式换热器课程设计 管壳式换热器使用范围 管壳式换热器的结构设计 Structure design of shell-and-tube heat exchanger Abstract Student in course design theory is a good opportunity of integrating theory with practice,this experim ent on the course design of shell-and-tube heat exchanger, industrial production, mastering and understanding concepts such as energy conservation, effciency, environmental protection. Heat exchanger in oil refining, petrochemical, and widely used in other industries, it is suitable for cooling, heating, evaporation and condensation, heat recovery, and various other aspects. Among them, shell-and-tube heat exchanger in the heat transfer efficiency, size of equipment and metal consumption than other new type of heat-exchange equipment, but it has a strong structure, flexibility, high reliability, widely used and so on, so the project is still being widely used. Structure design of shell-and-tube heat exchanger, is to ensure that the heat exchanger and the quality of life, you must consider many factors, such as material, pressure, temperature and wall temperature difference, scaling, fluid properties, as well as maintenance and cleaning, and so on to choose an appropriate structure. With a form of heat exchangers, for a variety of conditions, often used structures are not the same. In engineering design, apart from used as far as possible the training series, often designed according to their specific conditions, to meet the needs of technology (supported by most reasonable under suitable conditions the most effective and most economic man