U型管换热器空气加热器设计及有限元分析+CAD图纸
关键词： U型管换热器；结构设计；强度校核；有限元分析;毕业论文
Air Heater Design And Finite Element Analysis
Abstract: This paper introduces the U-tube heat exchanger design and calculation, and use ANSYS software for finite element analysis. 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, tube boxes, shell, head, exchanger tubes, nozzles, baffled, impingement baffle, support and other shell-tube accessories. According to the design conditions, the advantages and disadvantages of all kinds of tube and shell heat exchanger and applications, I choose the U-tube heat exchanger as the structure form of air heater.
Keywords: U-tube heat exchanger; Structure design; strength calculation; finite element analysis
目 录
1 绪论 1
1.1 立题依据 1
1.2 U形管式换热器的概述 2
1.3 换热器的应用 2
1.4 换热器的研究现状 2
1.5 对课题研究的启发 3
2 结构设计 4
2.1 壳程筒体设计 4
2.2 壳程封头设计 6
2.3 管箱设计 6
2.3.1 管箱短节 7
2.3.2 管箱封头 8
2.3.3 分程隔板 8
2.3.4 管箱长度 8
2.3.5 管箱的最小内侧深度 9
2.4 换热管设计 9
2.5 U形换热管设计 11
2.6 管板设计 12
2.6.1 管板与换热管的连接 12
2.6.2 管板的尺寸 13
2.6.3 垫片的选用 14
3 零部件的选用 15
3.1 折流板 15
3.1.1 折流板尺寸 15
3.1.2 折流板的布置 16
3.1.3 折流板的固定 16
3.2 拉杆及定距管设计 16
3.2.1 定距管设计 16
3.2.2 拉杆的直径和数量 17
3.2.3 拉杆的尺寸 17
3.2.4 拉杆的布置 17
3.3 防冲 17
3.3.1 防冲板的形式 17
3.3.2 防冲板的位置和尺寸 18
3.4 防短路结构 18
3.4.1 旁路挡板的结构尺寸 19
3.4.2 中间挡板 19
3.5 进出口接管设计 19
3.5.1 接管的尺寸 19
3.5.2 接管法兰设计 19