压力容器毕业设计--固定管板式换热器

《压力容器毕业设计--固定管板式换热器》由会员分享，可在线阅读，更多相关《压力容器毕业设计--固定管板式换热器（58页珍藏版）》请在毕设资料网上搜索。

1、 中文摘要中文摘要 换热器是工业生产中最常用的设备， 在不同工作条件下对换热器 性能要求不同，它是冷热流体间传递热量的设备。 本次设计为固定管板式换热器，固定管板式换热器主要由管箱、 管板、壳体、换热管、折流板、拉杆、定距管、封头等组成。固定管 板式换热器由两端管板和壳体构成。 由于其结构简单， 运用比较广泛。 固定管板式换热器管程和壳程中，流过不同温度的流体， 通过热交换 完成换热。当两流体的温度差较大时，为了避免较高的温差应力，通 常在壳程的适当位置上，增加一个补偿圈（膨胀节）。当壳体和管束 热膨胀不同时， 补偿圈发生缓慢的弹性变形来补偿因温差应力引起的 热膨胀。 在传热计算工艺中，包括传

2、热面积计算，传热量、传热系数的确 定和换热器内径及换热管型号的选择，以及传热系数、压降及壁温的 验算等问题。在强度计算中主要讨论的是筒体、管箱、封头、管板厚 度计算以及折流板、法兰、垫片和接管、支座、等零部件的设计，还 要进行一些强度校核。本设计是按照GB151管壳式换热器和GB150 钢制压力容器设计的。 换热器在工、农业的各个领域应用十分广泛，在日常生活中传 热设备也随处见，是不可缺少的工艺设备之一。随着研究的深入，工 业应用取得了令人瞩目的成果。 关键词：关键词：换热器；设计；校核；固定管板式 Abstract Heat exchanger is the most commonly us

3、ed equipment in industrial production, the requirements of different heat exchanger performance under different working conditions, it is the equipment of heat transfer between cold and hot fluids. The design for the fixed tube plate heat exchanger, fixed tube plate heat exchanger is mainly composed

4、 of a tube box, tube plate, shell, heat pipe, baffle plate, rod, tube, head distance etc Fixed tube plate heat exchanger by the two ends of tube plate and the shell. Because of its simple structure, more extensive use of. Fixed tube plate heat exchanger tube side and shell, through the fluid of diff

5、erent temperature, through the heat exchange heat. When the two fluid temperature difference is larger, in order to avoid high temperature stress, usually in the shell in the appropriate location, adding a compensation coil (expansion). When the shell and tube heat expansion compensation ring is not

6、 at the same time, the slow elastic deformation to compensate for the thermal stress caused by thermal. In the calculation of the heat transfer process, including heat transfer area calculation, heat transfer, the determination of heat transfer coefficient and the heat exchanger tube diameter and the choice of models of the heat exchange, and the heat transfer coefficient, pressure drop and wall temperature calculation etc Discussion on the calculation of strength is the design of cylinde