【正文】 壓力降 ........................................................22 ....................................................24 ...........................................................26 方案的確定 .........................................................26 儀表的選取 .........................................................27 檢測(cè)變送器 ....................................................27 溫度控制器 ...................................................28 電氣轉(zhuǎn)換器 ...................................................28 執(zhí)行器 .......................................................28 調(diào)節(jié)規(guī)律 ...........................................................28 .................................................................29 壓力容器類別判定 ...................................................29 壁溫計(jì)算 ............................................................30 管程壁溫 ......................................................30 殼程壁溫 ......................................................31 筒體材料 ......................................................32 管箱筒節(jié)厚度 .......................................................33 管箱筒節(jié)選材 ..................................................33 筒節(jié)厚度計(jì)算 ..................................................33 管箱法蘭 ...........................................................34 法蘭選材 ......................................................34 法蘭尺寸 ......................................................34 封頭的設(shè)計(jì) .........................................................36 封頭選材 ......................................................36 封頭壁厚計(jì)算 ..................................................36 封頭尺寸 ......................................................37 液壓試驗(yàn) ............................................................38 拉桿設(shè)計(jì) ..........................................................39 拉桿選材 .....................................................39 拉桿布置 .....................................................40 管板設(shè)計(jì) ..........................................................40 管板選材 .....................................................41 管板結(jié)構(gòu) .....................................................41 管板布管 .....................................................41 管孔設(shè)計(jì) .....................................................42 拉桿孔設(shè)計(jì) ...................................................42 分程隔板槽 ...................................................43 實(shí)際布管 .....................................................44 分程隔板設(shè)計(jì) ......................................................44 換熱管設(shè)計(jì) ........................................................44 保溫層設(shè)計(jì) .........................................................45 接管設(shè)計(jì) ...........................................................45 流體進(jìn)入換熱器的速度確定 .....................................45 接管設(shè)計(jì) .....................................................45 各接管法蘭、墊片及螺栓螺母的設(shè)計(jì) .............................47 各接管尺寸設(shè)計(jì) ...............................................49 防沖擋板 .........................................................51 管程防沖擋板 ................................................51 殼程防沖擋板 ................................................52 折流板設(shè)計(jì) .......................................................52 折流板材料 ...................................................52 折流板設(shè)計(jì) ..................................................52 （ 2）折流板的最小厚度 ......................................................53 （ 3）折流板的外圓直徑 D4....................................................53 折流板板孔 ..................................................53 折流板布置 ..................................................54 折流板重量計(jì)算 ..............................................54 官箱結(jié)構(gòu)形式 .................................................55 管箱長度 ....................................................56 吊耳 ..............................................................57 左管箱質(zhì)量 ...................................................57 右管箱質(zhì)量 ...................................................58 支座 .............................................................59 支座所承受的載荷 .............................................59 支座尺寸 .....................................................60 支座材料 .....................................................61 安裝尺寸 .....................................................61 鞍座結(jié)構(gòu) ....................................................61 焊縫設(shè)計(jì) .........................................................64 6 技術(shù)條件的編制 ...........................................................91 技術(shù)條件說明 .......................................................91 鋼材 .........................................................91 冷熱加工成型 .................................................91 焊接條件 .....................................................91 熱處理 .......................................................92 無損探傷 .....................................................92 總裝配圖的技術(shù)條件編制 ............................................92 零部件圖的技術(shù)條件編制 ............................................93 管箱部件圖的技術(shù)條件編制 .....................................93 管束技術(shù)部件圖的技術(shù)條件編制 .................................93 管板零件圖的技術(shù)條件編制 .....................................93 容器法蘭零件圖的技術(shù)條件編制 .................................93 折流板的技術(shù)條件編制 .........................................94 滑道的技術(shù)條件編制 ...........................................94 墊片的技術(shù)條件編制 ...........................................94 帶肩雙頭螺柱和拉桿的技術(shù)條件編制 .............................94 分程隔板的技術(shù)條件編制 .......................................95 支座的技術(shù)條件編制 ..........................................95 參考文獻(xiàn) ...................................................................96 結(jié) 束 語 .................................................................97 1 1 緒 論 合成氨生產(chǎn)工藝介紹 氨是重要的無機(jī)化工產(chǎn)品之一，在國民經(jīng)濟(jì)中占有重要地位。機(jī)械設(shè)計(jì)主要針對(duì)強(qiáng)度 問題，檢驗(yàn)所設(shè)計(jì)的結(jié)構(gòu)是否滿足要求以及當(dāng)不滿足要求時(shí)所采取的措施。工藝計(jì)算設(shè)計(jì)主要繪制了合成氨的方