【正文】 伸縮，無熱應(yīng)力，熱補(bǔ)償性能好；管程采用雙管程，流程較長，流速較高，傳熱性能較好，承壓能力強(qiáng)，管束可從殼體內(nèi)抽出，便于檢修和清洗，且結(jié)構(gòu)簡單，造價便宜。 本次設(shè)計為二類壓力容器，設(shè)計溫度和設(shè)計壓力都較高，因而設(shè)計要求高。設(shè)計中主要進(jìn)行了換熱器的結(jié)構(gòu)設(shè)計，強(qiáng)度設(shè)計以及零部件的選型和工藝設(shè)計。 use of doubletube 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 Utube heat exchanger, includes Equipment control, shell, head, exchanger tubes, nozzles, baffled, impingement baffle, guide shell, antishortcircuit structure, support and other shelltube accessories. This time I designed a second category pressure vessel, which has high design temperature and high design pressure. Thus the design demands are strict. It has dual heat exchanger tube, stainless steel heat exchanger manufacturers. I mainly carried out the design of heat exchanger structural design, strength of design and parts selection and process design. KEYWOEDS: Utube heat exchanger, frame, intensity, design and calculation 3 目錄 摘要 ..................................................................................................................1 緒論 ............................................................................................................... 5 第一部分、換熱器簡介及選擇 .................................................................... 7 換熱器簡介 ........................................................................................ 7 換熱器材料選擇 ................................................................................ 7 選材原則 ........................................................................................... 8 換熱器結(jié)構(gòu)設(shè)計 ................................................................................ 8 第二部分、設(shè)計說明書 ................................................................................ 9 傳熱工藝計算 .................................................................................... 9 1. 原始數(shù)據(jù) ....................................................................................... 9 2. 定性溫 度及物性參數(shù) .................................................................... 9 3. 傳熱量與冷水流量 ..................................................................... 10 4. 有效平均溫差 ........................................................................... 10 5. 管程換熱系數(shù)計算 ..................................................................... 11 6. 殼程換熱 系數(shù)計算 ..................................................................... 12 ............................................................................... 13 ............................................................................... 14 ............................................................................... 14 10. 殼程壓降計算 ........................................................................... 15 4 強(qiáng)度計算 .......................................................................................... 16 換熱管材料、規(guī)格的選擇及功能的確定 ................................. 16 管子的排列方式 ....................................................................... 16 確定殼體直徑 ........................................................................... 17 筒體壁厚確定 ........................................................................... 17 液壓試驗 ................................................................................... 18 殼程標(biāo)準(zhǔn)橢圓形封頭厚度的計算 ............................................ 18 管程標(biāo)準(zhǔn)橢圓形封頭厚度 的計算 ............................................ 19 法蘭的選擇 ............................................................................... 21 管板的設(shè)計 ............................................................................... 22 管箱短節(jié)壁厚的確定 .............................................................. 24 拉桿和定距管的 確定 ............................................................... 25 折流板的選擇 ......................................................................... 25 防沖板的選擇 .......................................................................... 26 接管及開孔補(bǔ)強(qiáng) ..................................................................... 26 分程隔板厚度選取 ................................................................. 28 支座的選擇及應(yīng)力校核 ........................................................... 29 第三部分、換熱器的制造、檢驗、安裝與維修 ....................................... 33 換熱器的制造、檢驗與驗收 ........................................................... 33 筒體 ......................................................................................... 33 換熱管 .................................................................................... 33 5 管板 ......................................................................................... 34 折流板、支持板 ...........................