机械5

润滑油-水U型管换热器设计 [摘要]换热器是用于各种物料之间进行热量传递的过程设备。 在U型换热器设计过程中，严格按照GB150-98《钢制压力容器》和GBT25198-2010《钢制压力容器封头》等标准进行设计和计算。 在本次的设计过程中，包括了两个部分：计算部分和绘图部分。计算部分主要是对筒体、封头、管板、换热管、法兰、折流板、拉杆、鞍座等进行了设计和选型,并且，对壳体和管箱进行了开孔补强计算，最终选择了U型管式换热器。除此之外，还参阅相关的设计手册及大量的文献，完成了一张总装配图和3张零件图的绘制。 [关键词]：换热器，U型管，设计 Desig
n of U - tube heat excha
nger with lubricati
ng oil a
nd water [Abstract]: heat excha
nger is a process equipme
nt used for heat tra
nsfer betwee
n various materials. I
n the desig
n process of u-type heat excha
nger, desig
n a
nd calculatio
n are carried out i
n strict accorda
nce with gb150-98 steel pressure vessel a
nd gbt25198-2010 steel pressure vessel head a
nd other sta
ndards. I
n this desig
n process, there are two parts: calculatio
n part a
nd drawi
ng part. The calculatio
n part is mai
nly the desig
n a
nd selectio
n of the shell, head, tube plate, heat excha
nge tube, fla
nge, baffle plate, tie rod, saddle, a
nd so o
n, a
nd, the shell a
nd tube box for the calculatio
n of hole rei
nforceme
nt, the fi
nal choice of the u-tube heat excha
nger. I
n additio
n, I also refer to releva
nt desig
n ma
nuals a
nd a large
number of literature, a
nd complete the drawi
ng of a ge
neral assembly drawi
ng a
nd three parts drawi
ng. [key words] : heat excha
nger, u-tube, desig
n 目录 中文摘要I 英文摘要II 前言1 1原始数据2 2热传量和物性参数2 2.1传热量4 2.2冷流体用量4 2.3定性温度的确定4 2.4主要物性参数4 2.5流程安排5 3估算传热面积6 3.1平均传热温差6 3.2选K值，估算换热面积6 4主体构件的工艺尺寸7 4.1管径和管内流速7 4.2管程数和传热管数7 4.3平均传热温差校正及壳程数8 4.6折流板9 4.8接管9 5热量核算11 5.1壳程表面传热系数11 5.2管程表面传热系数12 5.3污垢热阻和管壁热阻12 5.5壁温核算13 6换热器内流体阻力（压强降）核算15 6.1管程流体阻力15 6.2壳程流体阻力15 7 .结构设计18 7.1确定换热管的规格和长度18 7.3壳体直径的确定（查GB151-2014） 25 7.5拉杆及定距管26 7.6保温层26 7.7其他构件27 8其它零部件的选择和布置28 8.1接管的结构设计查《钢制管法兰、垫片、紧固件》 29 8.2壳程接管开孔补强校核30 8.3管箱接管开孔补强校核31 8.4管箱的设计33 8.5排气管、排液管的选用和布置34 9应力计算36 9.1热交换器所受的应力36 9.2温差应力37 9.3拉脱力37 9.4许用应拉脱力37 10换热器主要结构尺寸和计算结果汇总38 10.1工艺参数汇总38 10.2物性参数汇总38 10.3结构计算参数汇总38 总结39 参考文献40 致谢41