【正文】 xpansion devices proposed pipeline system cooler, seal piping systems in the formulation, the formulation of the milling system, etc. Have identified the main auxiliary mill, coal feeder, blower, induced draft fan, to the powder, coarse separator, feed water pump and so on. This design only in the selection criteria in accordance with the safe and economic optimization does not take into account other factors. Keywords: steam turbine, boiler, heating system, auxiliary form 300MW 機(jī)組熱力部分局部初步設(shè)計(jì) III 目 錄 中文摘要 ......................................................................................................................................I Abstract.......................................................................................................................................II 1. 原則性熱力系統(tǒng)的擬定計(jì)算 ................................................................................................1 給水回?zé)嵯到y(tǒng)和除氧器系統(tǒng)的擬定 ......................................................................1 補(bǔ)水系統(tǒng)的擬定 ......................................................................................................1 鍋爐連續(xù)排污利用系數(shù)的擬定 ..............................................................................2 繪制原則性熱力系統(tǒng)圖 ..........................................................................................2 繪制汽輪機(jī)熱力過程線及汽水綜合參數(shù)表 ..........................................................2 回?zé)嵯到y(tǒng)的計(jì)算 ......................................................................................................5 汽輪機(jī)總汽耗量及各項(xiàng)汽水流量計(jì) 算 .................................................................11 汽輪機(jī)功率核算 .....................................................................................................13 熱經(jīng)濟(jì)指標(biāo)計(jì)算 .....................................................................................................15 2. 汽機(jī)車間主要設(shè)備的確定 ....... ...........................................................................................18 凝汽器與軸封加熱器的選擇 …………………………………………………… ..18 給水泵的選擇 .........................................................................................................22 凝結(jié)水泵的選擇 .....................................................................................................22 除氧器及給水箱的選擇 .........................................................................................24 低壓加熱器的疏水泵的選擇 .................................................................................25 連續(xù)排污擴(kuò)容器的選擇 .........................................................................................25 疏水?dāng)U容器的選擇 .................................................................................................26 疏水箱及疏水泵的選擇 .........................................................................................26 供水方式的確定和循環(huán)水泵的選擇 .....................................................................27 3. 鍋爐燃燒系統(tǒng)及其設(shè)備的選擇 ...........................................................................................29 燃燒系統(tǒng)的計(jì)算 .....................................................................................................29 制粉系統(tǒng)的選擇 .....................................................................................................32 磨煤機(jī)型式的選擇 .................................................................................................33 排粉機(jī)的選擇 .........................................................................................................34 粗粉分離器的選擇 .................................................................................................36 給煤機(jī)的選擇 .........................................................................................................36 送風(fēng)機(jī)的選擇 .........................................................................................................37 引風(fēng)機(jī)的選擇 .........................................................................................................39 4. 全面性熱力系統(tǒng)的擬定 .......................................................................................................40 主蒸汽管道系統(tǒng)的擬定 .........................................................................................40 再熱機(jī)組旁路系統(tǒng)的擬定 .....................................................................................43 給水管道系統(tǒng)的擬定 .............................................................................................45 回?zé)峒訜崞鞴艿老到y(tǒng)的擬定 .................................................................................46 除氧器管道系統(tǒng)的擬定 .........................................................................................47 沈陽工程學(xué)院畢業(yè)設(shè)計(jì)（論文） IV 補(bǔ)充水管道系統(tǒng)的擬定 .........................................................................................49 排污擴(kuò)容器及排污冷卻器管道系統(tǒng)的擬定 .........................................................51 軸封管道系統(tǒng)的擬定 .............................................................................................52 真空及空氣管道系統(tǒng)的擬定 .................................................................................52 結(jié)論 .............................................................................................................................................55 致謝 .............................................................................................................................................56 參考資料 .....................................................................................................................................57 附圖 .............................................................................................................................................58 附圖 1 發(fā)電廠原則性熱力系統(tǒng)圖 ..............................................................................58 附圖 2 再熱機(jī)組旁路系統(tǒng) ..........................................................................................59 附圖 3 300MW 單元制給水系統(tǒng) .................................................................................. 60 附圖 4 回?zé)峒訜嵯到y(tǒng)圖 ..............................................