【正文】 ed supply to the use of industrial production and civil life directly. This graduation design of the calculation of smoke wind resistance in 29 MW hot water boiler is conducted. The calculation of smoke wind resistance in hot water boiler is on the basis of thermodynamic calculation, through aerodynamic calculation of flue gas and air channels, to solve the flow channel of total resistance and to provide basic data to choose the appropriate guide blower. Each part of the medium flow rate, temperature and flow area and other related data are based on the boiler thermodynamic calculation data of measurement under the rated load in the smoke wind system. The calculation of smoke wind resistance including the calculation of flue gas resistance add to the selection of the induced draft fan, the calculation of air resistance and the selection of the blower. Key words： hot water boiler, induced draft fan, blower ,the calculation of smoke wind resistance 目錄 第 1 章 緒論 ..............................................................................................................1 鍋爐的應(yīng)用現(xiàn)狀及其在社會生 活中的重要性 ...............................................1 鍋爐的發(fā)展 .............................................................................................1 鍋爐的工作過程 .....................................................................................2 鍋爐在社會生活中的應(yīng)用現(xiàn)狀 .............................................................3 熱水 鍋爐 ...........................................................................................................3 鍋爐分類 .................................................................................................3 熱水鍋爐現(xiàn)狀 .........................................................................................5 熱水鍋爐舉例 .........................................................................................6 煙風(fēng)阻力計算的重要性 .........................................................................9 煙風(fēng)阻力計算設(shè)計優(yōu)化和改進 ...........................................................10 煙風(fēng)阻力計算步驟 .........................................................................................10 煙氣側(cè)阻力 計算 及引風(fēng)機的 選型 ......................................................10 空氣側(cè)阻 力 計算 及鼓風(fēng)機的 選型 ....................................................... 11 第 2 章 煙氣側(cè)阻力計算 .....................................................................................12 爐膛出口負(fù)壓及八字煙道阻力 .....................................................................13 縱向、橫向相對截距 ...........................................................................13 斜向節(jié)距 ...............................................................................................13 單排管子阻力系數(shù) ξ10..........................................................................13 八字煙道阻力系數(shù) ...............................................................................14 煙氣動壓頭 ...........................................................................................15 前煙道箱阻力 .................................................................................................16 局部阻力系數(shù)及有效截面積 ...............................................................16 前煙箱煙氣速度 ...................................................................................17 前煙箱局部阻力 ...................................................................................17 螺紋煙管阻力 .................................................................................................18 動壓頭 ...................................................................................................18 入口、出口阻力系數(shù) ...........................................................................18 螺紋煙管阻力 .......................................................................................18 后煙箱阻力 .....................................................................................................19 后煙箱出口阻力系數(shù)和后煙箱截面變化阻力系數(shù) ...........................19 動壓頭 ...................................................................................................19 后煙箱與省煤器之間的阻力 ...............................................................20 后煙箱與除塵器與煙囪之間的煙道阻力 .....................................................20 除塵器阻力 .....................................................................................................20 煙囪阻力 .........................................................................................................20 煙氣動壓頭 ...........................................................................................20 沿程阻力系數(shù) .......................................................................................21 煙囪阻力 ...............................................................................................21 自生通風(fēng)力 .....................................................................................................21 煙氣側(cè)全壓降 .................................................................................................22 第 3 章 引風(fēng)機 ........................................................................................................ 23 煙氣容量 .........................................................................................................23 引風(fēng)機應(yīng)有煙氣量 .........................................................................................23 引風(fēng)機應(yīng)有壓頭 .............................................................................................24 引風(fēng)機 型號 .....................................................................................................24 引風(fēng)機參數(shù) .....................................................................................................25 第 4 章 空氣側(cè)阻力計算 .....................................................................................26 吸風(fēng)管路阻力 ......................................................................