【文章內(nèi)容簡(jiǎn)介】 ..... 78 能量衡算過程 .............................................................................................................. 78 蒸汽、冷凝水計(jì)算 ...................................................................................................... 80 第五篇 多級(jí)攪拌反應(yīng)塔設(shè)計(jì) .......................................................................................................... 81 第一章 設(shè)計(jì)目的及參 數(shù)確定 .................................................................................................. 81 任務(wù)、目的 .................................................................................................................. 81 物料性質(zhì) ...................................................................................................................... 81 攪拌器的選型 .............................................................................................................. 82 確定操作參數(shù) .............................................................................................................. 82 攪拌塔結(jié)構(gòu)的設(shè)計(jì) ...................................................................................................... 82 第二章 攪拌特性計(jì)算 .............................................................................................................. 83 計(jì)算雷諾數(shù) Re ............................................................................................................ 83 攪拌功率計(jì)算及電動(dòng)機(jī)的選擇 .................................................................................. 83 第三章 流體力學(xué)計(jì)算及返混評(píng)估 .......................................................................................... 84 流動(dòng)模型 ...................................................................................................................... 84 軸向返混核算 .............................................................................................................. 87 第四章 傳熱設(shè)計(jì)計(jì)算 .............................................................................................................. 87 傳熱設(shè)計(jì) ...................................................................................................................... 87 保溫層厚度的計(jì)算 ...................................................................................................... 88 第五章 機(jī)械設(shè)計(jì) ...................................................................................................................... 88 攪拌器 .......................................................................................................................... 88 攪拌器 ............................................................................................................... 88 攪拌器的強(qiáng)度校核 ........................................................................................... 88 攪拌器槳葉材料的許用應(yīng)力（選用 45 號(hào)碳素鋼） ..................................... 89 攪拌器與攪拌軸的聯(lián)接 ................................................................................... 89 攪拌容器 ...................................................................................................................... 90 攪拌軸設(shè)計(jì)計(jì)算及強(qiáng)度校核 ...................................................................................... 90 攪拌軸計(jì)算的力學(xué)模型 ................................................................................... 90 按扭轉(zhuǎn)變形計(jì)算攪拌軸的軸徑 ...................................................................... 91 按臨界轉(zhuǎn)速校核攪拌軸的直徑 ....................................................................... 92 攪拌軸及攪拌器（包括附件）有效質(zhì)量的計(jì)算 ................................ 92 作用集中質(zhì)量的單跨攪拌軸第一階臨界轉(zhuǎn)速的計(jì)算 ........................ 93 軸的轉(zhuǎn)速與臨界轉(zhuǎn)速的比值 ................................................................ 98 按強(qiáng)度計(jì)算攪拌軸的直徑 .............................................................................. 98 攪拌軸軸徑 d2 的強(qiáng)度計(jì)算 .................................................................. 98 由徑向力引起的彎矩的計(jì)算 ................................................................ 98 第六章 軸封、變速器及機(jī)架的設(shè)計(jì)選型 ............................................................................ 101 軸封設(shè)計(jì) .................................................................................................................... 101 IV 變速器 ........................................................................................................................ 102 機(jī)架 ............................................................................................................................ 102 第七章 攪拌塔及封頭設(shè)計(jì) .................................................................................................... 102 設(shè)計(jì)條件 .................................................................................................................... 102 按 計(jì)算壓力計(jì)算塔體和封頭厚度 ............................................................................ 103 塔器質(zhì)量計(jì)算 ............................................................................................................ 103 塔設(shè)備質(zhì)量載荷計(jì)算 ................................................................................................ 103 風(fēng)載荷和風(fēng)彎矩計(jì)算 ................................................................................................ 106 塔器的基本自振周期計(jì)算 ........................................................................................ 106 地震載荷計(jì)算 ............................................................................................................ 106 偏心彎矩的計(jì)算 ........................................................................................................ 108 各種載荷引起的軸向應(yīng)力 ........................................................................................ 108 塔體和裙座危險(xiǎn)截面的強(qiáng)度與穩(wěn)定校核 .............................................................. 109 塔體水壓試驗(yàn)和吊裝時(shí)的應(yīng)力校核 ...................................................................... 111 基礎(chǔ)環(huán)設(shè)計(jì) .............................................................................................................. 112 7． 13 地腳螺栓計(jì)算 ..........................................................................................