杂醇油冷却器-毕业设计说明书.doc

摘要 换热器是将热流体的部分热量传递给冷流体的设备，又称热交换器。换热器是化工、石油、动力、食品及其它许多工业部门的通用设备，在生产中占有重要地位。在化工生产中可作为加热器、冷却器、冷凝器、蒸发器和再沸器等。换热器种类很多，但根据冷、热流体热量交换的原理和方式基本可分三大类即：间壁式、混合式和蓄热式。 关键词: 管壳式换热器 浮头式换热器 管板 管箱 管束 校核 浮头法兰 Abstract Heat exchanger is the transmission of heat fluid to the cold fluid equipment. Heat exchanger is a general equipment, and played an important role in manufacture, which usually used in Chemical, petroleum, power, food and many other industrial sectors, In the chemical production, it can be used as a heater, cooler, evaporator, condenser and reboiler. There are variety of heat exchangers, however, According to the thermal fluid heat, cold exchange principle and different modes, That basically can be divided into three categories: wall type, mixed type and regenerative type. The design consideration of the properties, temperature, pressure and other factors for a given medium, I select tubular heat exchanger and float head heat exchangers According to the standard of the literature GB150-1998《Steel pressure vessel》，GB151-1999《Shell and tube type heat exchanger》，《heat exchanger design handbook》, I design and check part of the structure and strength of the floating head heat exchanger, in which main components including cylinder, head, tube box, hook and loop type floating head and saddle. In this design, I carefully analyzed the stress of dangerous section with the calculation and check, which to ensure the safety in production. At the same time , Combined with the selected materials and the working environment to develop the corresponding welding technology. Key words: Tubular heat exchanger Float head heat exchangers Tube plate Tube box Pipe bundle check Floating head flange 目录 摘要 1 Abstract 2 第一章 绪论 5 第二章 工艺计算 7 2.1设计内容 7 2.2介质物性参数计算 8 2.3确定设计方案 8 2.3.1确定换热器类型 8 2.3.2换热器液体流动路径选择 9 2.4计算传热面积 9 2.4.1计算平均温度差 9 2.4.2估算总传热系数 10 2.4.3初步计算总传热面积 10 2.4.4换热器型号的选择 11 2.5校核总传热系数 11 2.6管程与壳程压强降校核 13 2.6.1管程压强降的检验 13 2.6.2壳程压强降的检验 14 2.7壳程压强降的检验 15 第三章 结构设计与强