www.88doc88.comwww.yanziedu.comU 型管式换热器设计摘要本文介绍了 U 型管换热器的整体结构设计计算。U 型管换热器仅有一个管板，管子两端均固定于同一管板上，管子可以自由伸缩，无热应力，热补偿性能好；管程采用双管程，流程较长，流速较高，传热性能较好，承压能力强，管束可从壳体内抽出，便于检修和清洗，且结构简单，造价便宜。U 型管式换热器的主要结构包括管箱、筒体、封头、换热管、接管、折流板、防冲板和导流筒、防短路结构、支座及管壳程的其他附件等。本次设计为二类压力容器，设计温度和设计压力都较高，因而设计要求高。换热器采用双管程，不锈钢换热管制造。设计中主要进行了换热器的结构设计，强度设计以及零部件的选型和工艺设计。关键词：U 型管换热器，结构，强度，设计计算www.88doc88.comwww.yanziedu.comU-TUBE HEAT EXCHANGER DESIGNABSTRACTThis paper introduces the U-tube heat exchanger design and calculation. U-tube heat exchanger has only one tube sheet, tubes are fixed at both ends of boards in the same tube, and tubes could telescopic freely, non-thermal stress, thermal performance and compensation; use of double-tube process, the process is longer, higher speed, better heat transfer performance, pressure capacity, and control can be extracted from the shell with easy maintenance and cleaning, and simple structure cost less. The main structure of U-tube heat exchanger, includes Equipment control, shell, head, exchanger tubes, nozzles, baffled, impingement baffle, guide shell, anti-short-circuit structure, support and other shell-tube accessories.This time I designed a second category pressure vessel, which has high design temperature and high design pressure. Thus the design demands are strict. It has dual heat exchanger tube, stainless steel heat exchanger manufacturers. I mainly carried out the design of heat exchanger structural design, strength of design and parts selection and process design.KEYWOEDS: U-tube heat exchanger, frame, intensity, design and calculationwww.88doc88.comwww.yanziedu.com目录中文摘要 .I英文摘要 .II绪论 .11 管壳式换热器的类型、结构与型号 .21.1 换热器的零部件名称 .21.2 换热器的主要组合部件 .32 换热器材料选择 .42.1 选材原则 .43 换热器结构设计 .53.1 壁厚的确定 .63.2 管箱圆筒短节设计 .63.3 壳体圆筒设计 .73.4 封头设计 .83.4.1 后封头计算.93.4.2 管箱封头计算.103.5 换热管设计 .113.5.1 换热管的规格和尺寸偏差.113.5.2 U 形管的尺寸 .123.5.3 管子的排列型式.123.5.4 换热管中心距.133.5.5 布管限定圆.133.5.6 换热管的排列原则.153.6 管板设计 .153.6.1 管板连接设计.173.6.2 管板设计计算.193.7 管箱结构设计 .213.7.1 管箱的最小内侧深度.223.7.2 分程隔板.224 换热器其他各部件结构 .234.1 进出口接管设计 .234.1.1 接管法兰设计.234.1.2 接管外伸长度.25www.88doc88.comwww.yanziedu.com4.1.3 接管与筒体、管箱壳体的连接.254.1.4 接管开孔补强的设计计算.254.1.5 接管最小位置.294.1.6 壳程接管位置的最小尺寸.304.1.7 管箱接管位置的最小尺寸.304.2 管板法兰设计 .304.2.1 垫片的设计.334.2.2 螺栓设计.344.2.3 法兰设计.384.3 折流板 .384.3.1 折流板尺寸.394.3.2 折流板的布置.394.3.3 折流板的固定.364.4 拉杆与定距管 .384.4.1 拉杆的结构型式.394.4.2 拉杆的直径和数量.394.4.3 拉杆的尺寸.404.4.4 拉杆的布置.424.4.5 定距管尺寸.424.5 防冲与导流 .