【正文】 ................... 4 設(shè)計(jì)特點(diǎn) ................................................................................................... 5 本章小結(jié) ................................................................................................... 6 第 3 章 熱力計(jì)算 ................................................................................................ 7 輔助計(jì)算 ................................................................................................... 7 空氣平衡 ............................................................................................ 7 空氣和煙氣量 .................................................................................... 7 煙氣特性 ............................................................................................ 8 鍋爐熱平衡 。one transverse drums。s market and the development of domestic wood processing industry, and many woodprocessing enterprises of raw materials often produce large amounts of wood waste such as sawdust Fen Xie, wood chips and so on. The original waste timber mainly as cooking fuel, thermal efficiency is usually less than 30%, only a very small part of the use of layers to use fuel bustion, but bustion efficiency is still low, thus causing great waste of timber resources waste. Currently part of the boiler manufacturers produce boilers, burning waste wood (especially with more gowaste wood), the principal of the following two questions: (1) bustion efficiency is low。 關(guān)鍵詞 ： 往復(fù)爐排爐 ； 單鍋筒 ； 生物燃料 ； 木屑 鍋爐設(shè)計(jì) 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 II The design of boiler Abstract China is rich waste timber resources, especially in recent years, as China39。采用低而長的后拱和高而長的前拱，保證著火區(qū)的輻射熱和煙氣回流。因此在考慮燃料特性的基礎(chǔ)上選用往復(fù)爐排爐燃燒，優(yōu)化一次風(fēng)二次風(fēng)配置及爐拱設(shè)計(jì)，設(shè)計(jì)出 10t/h 燃用木屑蒸汽鍋爐。 目前國內(nèi)部分鍋爐制造廠家生產(chǎn)的鍋爐，在燃燒廢木材 (尤其是含細(xì)末較多的廢木材 )時(shí)，主要存在以下兩個問題： (1)燃燒效率低； (2)水份高時(shí)，運(yùn)行不穩(wěn)定。 鍋爐設(shè)計(jì) 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 I 鍋爐設(shè)計(jì) 摘要 我國廢木材資源比較豐富，特別是近年來，隨著我國經(jīng)濟(jì)的發(fā)展及對外開放，日本和東南亞地區(qū)的一些木材加工企業(yè)進(jìn)入我國市場和國內(nèi)木材加工業(yè)的發(fā)展，許多以木材為加工原料的企業(yè)常常產(chǎn)生大量的木材廢料，諸如鋸末粉屑、碎木片等。原來廢棄木材主要作為炊事燃料，熱效率一般低于 30% ，只有極少部分利用層燃燃燒方式加以利用，但燃燒效率仍偏低，因此造成廢木材資源的極大浪費(fèi)。主要是由于燃料中水分和揮發(fā)分較高，影響著火和燃盡。本設(shè)計(jì)采用單鍋筒縱置式往復(fù)爐排爐型。大塊料由料斗送入，細(xì)屑由送料風(fēng)于送入，優(yōu)化燃燒。s economic development and opening up, Japan and Southeast Asia some of the wood processing enterprises to enter China39。 (2) water is high, run instability. Mainly due to the moisture and volatile fuel higher impact on fire and burn. Therefore, in considering the use of fuel properties on the basis of reciprocating grate furnace bustion, secondary air allocation optimization of a wind and the furnace arch design, design a 10t / h steam boiler burning wood chips. The design of single drum longitudinal reciprocating grate furnace. After a long low and high arches and long before the arch, to ensure fire zone radiant heat and smoke back. Material from the hopper into the large, fine dust from the feed air to send, optimize bustion. Key words:reciprocating grate。biofuel。 .................................................................................. 10 爐膛的尺寸設(shè)計(jì)及傳熱計(jì)算 ................................................................. 11 爐膛結(jié)構(gòu)特性計(jì)算 .......................................................................... 11 爐膛傳熱計(jì)算 .................................................................................. 14 鍋爐管束傳熱計(jì)算 ................................................................................. 16 鍋爐管束結(jié)構(gòu)特性計(jì)算 .................................................................. 16 鍋爐管束傳熱計(jì)算 .......................................................................... 17 煙管管束傳熱計(jì)算 ................................................................................ 19 煙管結(jié)構(gòu)特性計(jì)算 .......................................................................... 19 煙管熱平衡 ...................................................................................... 20 空氣預(yù)熱器傳熱計(jì)算 ............................................................................. 22 誤差校核 ................................................................................................. 25 本章小結(jié) ................................................................................................. 26 第 4 章 強(qiáng)度計(jì)算 .............................................................................................. 27 鍋殼筒體厚度計(jì)算 ................................................................................. 27 鍋爐設(shè)計(jì) 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 IV 煙管區(qū)平板厚度計(jì)算 ............................................................................. 28 凸型部分厚度計(jì)算 ................................................................................. 28 上集箱厚度計(jì)算 ..................................................................................... 29 下集箱厚度計(jì)算 ..................................................................................... 30 人孔蓋厚度計(jì)算 ..................................................................................... 30 煙管厚度計(jì)算 ......................................................................................... 31 鍋殼筒體上人孔的加強(qiáng)計(jì)算 ................................................................. 31 安全閥校核計(jì)算 ..................................................................................... 32 本章小結(jié) ............................................................................................... 32 第 5 章 煙風(fēng)阻力計(jì)算 ...................................................................................... 33 爐膛負(fù)壓 ................................................................................................. 33 八字煙道阻力 ......................................................................................... 33 煙管阻力計(jì)算 ......................................................................................... 33 煙囪阻力計(jì)算 ......................................................................................... 34 煙氣通道總壓降 ..................................................................................... 35 煙道自生通風(fēng)力 ........................................