要：换热器是实现化工生产过程中热量交换和传递不可缺少的设备，此次毕业设计我通过对换热器类型的比较，最后选择了螺旋板式换热器。本设计中的换热器是一种高效紧凑换热器设备,螺旋板式换热器适用汽－汽、汽－液、液－液，对液传热。用于化学、石油、溶剂、医药、食品、轻工、纺织、冶金、轧钢、焦化等行业。本设计的主要内容有：流体介质物性参数的确定；传热系数、换热面积的计算；压降阻力计算；倒锥端盖设计计算；计算螺旋板有效圈数、下料尺寸、定距柱间距等工艺尺寸；然后进行热力核算和压力降核算，确定换热器压力降均在合理范围之内，否则，要重新流速、传热系数，一步步重复上述过程，直至通过强度核算。校核通过后根据所设计结构参数绘制图纸。通过复算与校核，使所设计的换热器能够满足生产工艺的要求。7844
关键字： 螺旋板式；换热面积；定距柱；压力降
The Design of the Spiral Plate Heat Exchanger
Abstract: Heat exchanger is a necessary device to realize the chemical production process of heat exchange and transmission, this graduation design, by comparing heat exchanger type, I finally chose the spiral plate heat exchanger. This is a kind of high efficiency compact heat exchanger equipment, spiral plate heat exchanger is used on steam - gas, vapor - liquid, liquid - liquid, liquid heat transfer. Used in chemical, oil, solvents, medicine, food, light industry, textile, metallurgy, steel rolling, coking industry and so forth.The main context of my design is: the determination of fluid physical property parameters;the calculation of heat transfer coefficient and heat transfer area; the calculation of the pressure drop resistance; the calculation of inverted cone end cover design; the size of the material, the size of the dimensioning from the column spacing; then deal with the thermodynamic calculation and pressure drop calculations and determine whether heat exchanger pressure drop are within a reasonable range ,otherwise, recalculate the flow speed and the heat transfer coefficient, and repeat the process above step by step until pass the calculation of strength .After checking, finish the drawing depending on the structural parameters which has been designed. Through recalculation and checking, the design of heat exchanger can satisfy the requirements of the production process.
Keywords: spiral plate; heat exchange area; spacing column; pressure drop
目 录
1 绪论 1
1.1 本课题的背景 1
1.2 课题研究目的 1
1.3 换热器在化学工业中的应用 2
1.4 换热器的分类 3
1.4.1 换热器按传热原理分类 4
1.4.2 换热器按用途分类 4
1.4.3 按换热器结构分类 4
1.5 高效间壁式换热器 4
1.5.1 板式换热器 4
1.5.2 板翅式换热器 5
1.5.3 翅片管式换热器 6
1.5.4 热管换热器 4
1.5.5 螺旋板式换热器 6
1.6 国内外螺旋板式换热器的现状与进展 8
1.6.1 国内研究进展情况 8
1.6.2 国外研究进展 9
1.7 课题的来源与意义 9
1.7.1 理论意义 9
1.7.2 工程意义 9
2工程概况 11
2.1 空间布置 11
2.2 结构参数 11
2.3 工程概况 11
3螺旋板式换热器的传热工艺计算 12
3.1 主要技术参数 12
3.2 确定物性参数 12
3.2.1丁二烯的热物性参数 12 螺旋板式换热器设计+CAD图纸:http://www.751com.cn/jixie/lunwen_5952.html