關於麥克森鍋爐燃燒器改進及損壞原因分析

麥克森鍋爐燃燒器的喉部擴張角為12b

，zheyijiaodudexuanzetaixiao，suirancaiyongxiaodekuozhangjiaokeyishixuanliuqiangduzengda，rongyixingchengyifengbidehuiliuqu，danguoxiaodekuozhangjiaozengdalehuiliuqudemianji
，jiachanglehuiliuqudechangdu
，shihuiliuqugengjiejinyuranshaoqi，youzuipenchudewuhuayoudiguozaojinruhuiliuqu
，yingaowenqueyangerbeifenjiechengtanhei，shaobufentanheibeihuiliuqudegaowenqitidaidaoranshaoqidemouxiebujianbiaomianjixuranshao，zaochengzhexiebujiandesunhuai。通過以上分析可知，喉部擴張角過小，加速了燃燒器的損壞。

燃燒器的改進通過對原燃燒器損壞原因分析，吸收日本日立拔伯葛公司所生產160t/h麥克森鍋爐燃燒器的de優you點dian
，設she計ji了le燃ran燒shao器qi
，與yu原yuan燃ran燒shao器qi相xiang比bi
，它ta作zuo了le以yi下xia幾ji方fang麵mian的de改gai進jin。加jia大da穩wen焰yan器qi直zhi徑jing取qu消xiao一yi次ci風feng套tao筒tong，加jia大da穩wen焰yan器qi的de直zhi徑jing，穩wen焰yan器qi的de直zhi徑jing由you原yuan250mm加大到370mm，這zhe樣yang不bu但dan加jia大da了le一yi次ci風feng與yu二er次ci風feng的de配pei比bi，為wei初chu期qi燃ran燒shao提ti供gong充chong足zu的de氧yang氣qi，更geng重zhong要yao的de是shi它ta使shi一yi次ci風feng與yu二er次ci風feng的de配pei比bi為wei一yi恒heng定ding值zhi
，不bu會hui隨sui負fu荷he的de改gai變bian而er改gai變bian
，有you利li於yu操cao作zuo。

同tong時shi，取qu消xiao一yi次ci風feng套tao筒tong，減jian少shao了le一yi次ci風feng與yu二er次ci風feng的de阻zu力li，提ti高gao了le旋xuan轉zhuan氣qi流liu的de旋xuan轉zhuan強qiang度du
，有you利li於yu形xing成cheng穩wen定ding回hui流liu區qu，便bian於yu穩wen定ding燃ran燒shao。減jian小xiao穩wen焰yan器qi旋xuan流liu角jiao參can考kao原yuan2台開工鍋爐穩焰器旋流角度，由35b減小到20b左右，葉輪葉片數量由10片增加到15pian，keyijiangdixuanliuqiangdu，zengdayicifengdezhouxiangsudu
，shizhehuozhongxinhehuiliuquwaiyi
，jianxiaoduiranshaoqidesunhuai。zengdaranshaoqihoubukuozhangjiaozengdaleranshaoqihoubukuozhangjiao，youyuan12b增大到20b，使得旋流強度減弱
，回流區麵積減小，回流區外移，減小了對燃燒器的損壞。