1、 I 摘要摘要 本文依据国家相关规范、标准，严格遵循 GB151-99 和 GB150-98，着重介 绍了 U 型管式换热器的传热工艺的计算，及物料与结构因素对换热能力的影响 和换热器的机械设计，包括工艺结构与机械结构设计和换热器受力元件如管板 的受力计算和强度校核，以保证蒸汽过热器安全运行，其中，前者主要是确定 有关部件的结构形式，结构尺寸和零件之间的连接，如封头、接管、管板、折 流板等的结构形式和尺寸，管板与换热管、壳体、管箱的连接等。还介绍了 U 型管式换热器的制造、检验、安装和维修时应注意的事项。 关键词：蒸汽过热器 传热计算 结构设计 强度校核 II Abstract This th
2、esis is based on relevant national, standards, and strictly follows the GB151-99 and GB150-98, emphatically introduces the calculation of heat technologic process of U-tube heat exchangers, the effect with the fluids and structure of heat exchanger, and design of kinds of mechanical structure, inclu
3、ding structure of technologic process and mechanical structure and the loading conditions of objects of heat exchanger and strength check ,such as, tube sheet, aimed to make the heat exchangers work safely, the former is mostly related to component structural form and dimension, such as Vessel Head,
4、 nozzle, tube sheet, and baffle plate, and so on. And it also involves connection between tube sheet and accessories, shell and channel. Besides it also introduces some events to taking into account when manufacturing, inspecting, installing and maintaining. Key words: Steam superheater; Calculation of heat transfer; Design of structure; Strength check I 目录目录 摘要.I Abstract . II 第 1 章 绪论 1 1.1 概述. 1 1.2 换热器在工业中的应用. 1 1.3 换热器研究现状及发展方向. 2 1.3.1 研究现状. 2 1.3.2 发展趋势. 3 1.4 设计任务及思想. 4 1.4.1 设计任务. 4 1.
