重油预热器的设计+CAD图纸
毕业论文关键词：换热器；U型管；强度设计
Design of Heavyoil Preheater
Abstract：The main contents of this paper include determining the overall program, according to the media and parameters, select the heat exchanger material. On the basis of the heat exchanger in the form and size of the main processes have been identified, the design verification structural dimensions of the various components, accessories and auxiliary equipment of the heat exchanger. Structural design of the heat exchanger comprising: determining the thickness of a short section of the cylindrical tube box design, the housing cylinder design, head design, design of heat transfer tubes, tube sheet design, structure design tube box. Other accessories and auxiliary equipment design include: import and export takes over design, tube plate flange design, split flow plate design, the saddle design. In particular, each of the heat exchanger means calculates the pressure receiving member (e.g., housing) stress magnitude, to check whether the strength within an allowable range. In considering the strength, we should try to use standard materials and components produced in China, calculated or accounted for in accordance with technical regulations on pressure vessels
KeyWords: heat exchanger; U tube; strength design
目 录
1绪论 1
2换热器热力计算 1
2.1热力计算 1
2.1.1确定物性参数 1
2.1.2热量衡算2
2.1.3流速的选择 3
2.1.4计算总传热系数3
2.1.5换热器核算 6
2.1.6阻力计算 17
3总体方案确定 10
3.1设计参数的确定10
4结构设计12
4.1金属壁温计算 13
4.1.1管程壁温计算 13
4.1.2壳程壁温计算 13
4.2壁厚的确定 13
4.3封头的设计 14
4.3.1下封头的设计 14
4.3.2管箱封头的设计 16
4.4管箱圆筒短节设计 16
4.5压力试验17
4.5.1压力试验条件确定17
4.5.2水压试验强度校核17
4.6换热管的设计18
4.6.2布管方式 18
4.6.3布管限定圆18
4.6.4U型管长度选取19
4.6.5换热管与管板连接v 19
4.7管板的设计 19
4.8接管的设计 20
4.8.1蒸汽进出口接管 25
4.8.2重油进出口接管 25
4.9接管开孔补强的设计计算 26
4.9.1蒸汽进出口补强设计 26
4.9.2重油进出口补强设计 29
4.9.4管箱接管最小位置计算 31
4.10管法兰的设计 32
4.11折流板、支撑板设计 32
4.12防冲板设计36
4.13分层隔板设计 36
4.14支座的设计36
4.15拉杆定距管的设计36
4.15.1拉杆的型式 38
4.15.2拉杆直径和数量 39
4.15.3拉杆尺寸和重量 39
4.15.4拉杆的布置 39
4.15.5定距管尺寸 40
4.16旁路挡板设计 40
4.17吊耳的设计40
5小结 42
致谢43
参考文献 44
1绪论
节约能源是当今世界的一种重要社会意识，是指尽可能的减少能源消耗、增加能源利用率的一系列行为。该行为主要实施的措施是调整优化产业结，加快淘汰落后产能， 推动传统产业改造升级，加快节能减排技术开发和推广应用，重点推广高效换热器等节能减排技术。