U型管式换热器设计说明书.doc

PAGE PAGE 49 U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 U-TUBE HEAT EXCHANGER DESIGN ABSTRACT This 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 calculation 安徽理工大学毕业论文 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc231921041 中文摘要 PAGEREF _Toc231921041 \h I HYPERLINK \l _Toc231921042 英文摘要 PAGEREF _Toc231921042 \h II HYPERLINK \l _Toc231921043 绪论 1 HYPERLINK \l _Toc231921044 1管壳式换热器的类型、结构与型号 PAGEREF _Toc231921044 \h 2 HYPERLINK \l _Toc231921045 1.1 换热器的零部件名称 PAGEREF _Toc231921045 \h 2 HYPERLINK \l _Toc231921046 1.2 换热器的主要组合部件 PAGEREF _Toc231921046 \h 3 HYPERLINK \l _Toc231921047 2换热器材料选择 PAGEREF _Toc231921047 \h 4 HYP