【正文】 設(shè)備 ，通過這種設(shè)備進行熱量的傳遞，以滿足生產(chǎn)工藝的需要。 換熱器的應(yīng)用廣泛，日常生活中取暖用的暖氣散熱片、汽輪機裝置中的凝汽器和航天火箭上的油冷卻器等，都是換熱器。 關(guān)鍵詞：換熱器； U 型管式；工藝設(shè)計；結(jié)構(gòu)設(shè)計；強度計算 廣東石油化工學(xué)院專科畢業(yè)設(shè)計： U 型管換熱器設(shè)計 IV ABSTRACT The heat exchanger is the techniques equipment widely used in many industrial departments. In the design it uses the fixed tube plate type of the heat interchanger structure,because of the operating condition and the medium characteristic. This equipment is suitable when the temperature difference is not big,the shell regulation fluid is clean,or the fraze,disassembling or cleaning for the heat exchanger is not easy. In the process of the design,the technological design,the structural design(material shaping) and the strength calculation must according to the GB1511999Steel SystemShell Type Heat interchanger,finally it pletes the seminar. In the strength calculation,it must be puted for the require of the part of inflates according to the difference concrete value ot the the design the way of each pipe arrangement uses the equilateral triangle arrangement,this method may arrange many pipes in the same tube plate area,also the tube outside surface heat transfer coefficient is big. But because the structure is two barrel regulation, it uses the rectangular arrangement at the both sides of the partition board. Finally it be difined that the heat interchanger whether satisfies the need of the medium heat transfer. Key words: heat exchanger； fixed tube plate； technological design。但由于是雙管程結(jié)構(gòu)，所以在分程隔板兩邊采用矩形排列。其中在強度計算中，根據(jù)溫差具體的數(shù)值，對膨脹節(jié)的需要進行計算。該設(shè)備適用于溫差不大，殼程流體清潔，不易結(jié)垢拆卸、清洗的場合。 學(xué)號： 畢業(yè)設(shè)計說明書 U 型管換熱器設(shè)計 U tube heat exchanger design 學(xué)院 機電工程學(xué)院 專業(yè) 化工設(shè)備與機械 班級 學(xué)生 指導(dǎo)教師（職稱） 完成時間 年 月日至 年 月 日 摘要 III 摘要 換熱器是許多工業(yè)部門廣泛應(yīng)用的工藝設(shè)備。設(shè)計中考慮操作 條件及介質(zhì)的特性，本設(shè)計采用 U 型管式換熱器結(jié)構(gòu)。在設(shè)計過程中，依照 GB1511999《鋼制 U型管式換熱器》對換熱器依次進行工藝計算、結(jié)構(gòu)設(shè)計（材料選型）、強度計算，最后完成專題討論。本設(shè)計每層管子排列方式采用正三角形排列，這種方法在相同的管板面積上可排較多的管子，且管外表面?zhèn)鳠嵯禂?shù)大。最后經(jīng)檢測該臺換熱器是否滿足介質(zhì)換熱的需要。 structural design； strength calculation 目錄 V 目 錄 摘要 .......................................................................................................................................III ABSTRACT ........................................................................................................................ IV 前 言 ..................................................................................................................................... 1 第一章 緒論 ...................................................................................................................... 2 1． 1 換熱器的應(yīng)用及其發(fā)展 ................................................................................. 2 1． 2 換熱器的分類及其特點 ................................................................................. 5 1． 3 U 型管式換熱器的設(shè)計 .................................................................................. 7 第二章 換熱器的工藝計算 .............................................................................................. 8 2． 1 設(shè)計條件 ........................................................................................................... 8 2． 2 確定物性數(shù)據(jù) .................................................................................................. 8 2． 3 符號說明 ........................................................................................................... 8 2． 4 流體走向的確定 .............................................................................................. 9 2． 5 估算傳熱面積，初選換熱器的規(guī)格 ............................................................ 9 2． 6 換熱管的排列和管心距 ................................................................................ 10 2． 7 折流板 .............................................................................................................. 11 2. 8 接管 ..................................................................................................................... 11 2． 9 壓強降的核算 ................................................................................................ 12 2． 10 總傳熱系數(shù)的核算 ..................................................................................... 13 第三章 換熱器的結(jié)構(gòu)設(shè)計 ............................................................................................ 16 3. 1 筒體 ..................................................................................................................... 16 3. 2 管箱材料 ............................................................................................................ 16 3. 3 管箱法蘭 ........................................................................................................... 17 3. 4 接管材料 ............................................................................................................ 18 3. 5 接管法蘭 ........................................................................................................... 19 3. 7 管板 .................................................................................................................... 20 3. 8 材料 ..................................................................................................................... 21 3. 9 換熱管 ................................................................................................................ 21 3. 10 拉桿 .................................................................................................................. 22 折流板的選取及布置 .................................................................................... 23 3. 12 封頭 .................................................................................................................. 23 第四章 換熱 器的強度計算 ....................................................................................