◎ 應用范圍(wei)
用于鍋(guo)爐省(sheng)煤器(qi)和煙氣換熱器(qi)區(qu)域的吹(chui)掃
◎ 吹灰器簡介及工作原理
半伸縮式吹灰器主要用于清潔鍋爐管束受熱面。吹灰元件是一根吹灰管,吹灰管上裝有多個特殊噴嘴,停用時吹灰管一半伸入爐內煙氣通道。吹灰器開始工作時,吹灰管到達前端位置后再退回到停用位置;同時噴嘴作螺旋運動。從噴嘴噴射出的吹掃介質氣流以適當的動量(合適的流量和速度)來清除鍋爐受熱面上的積灰,由于錐形吹掃射流的延伸,從而達到清潔受熱面,提高傳熱效率的目的。
吹(chui)掃過程如下訴述:
在大梁上移動(dong)(dong)的(de)齒輪行走(zou)箱帶動(dong)(dong)吹(chui)(chui)灰(hui)管(guan)運動(dong)(dong),吹(chui)(chui)灰(hui)器閥門通過固定的(de)內管(guan)向吹(chui)(chui)灰(hui)管(guan)提供(gong)吹(chui)(chui)掃介質(zhi)。
吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)停(ting)用時,齒輪行(xing)(xing)走(zou)箱(xiang)位于大梁后(hou)(hou)(hou)端(duan)處,吹(chui)(chui)(chui)(chui)(chui)灰(hui)管(guan)一(yi)部(bu)(bu)分(fen)預先(xian)(xian)伸入(ru)爐(lu)(lu)內煙(yan)氣(qi)(qi)通(tong)(tong)道,另一(yi)部(bu)(bu)分(fen)作伸縮運(yun)(yun)動(dong)。首先(xian)(xian)對吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)程控裝置進行(xing)(xing)吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)后(hou)(hou)(hou)退延遲設(she)置,即(ji)程控裝置接(jie)到(dao)前(qian)端(duan)限(xian)位開關(guan)信號(hao)后(hou)(hou)(hou)延遲1秒再發出(chu)后(hou)(hou)(hou)退指令。這(zhe)樣(yang)吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)接(jie)到(dao)運(yun)(yun)行(xing)(xing)指令后(hou)(hou)(hou),電(dian)機通(tong)(tong)電(dian),吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)行(xing)(xing)走(zou)箱(xiang)向(xiang)前(qian)運(yun)(yun)動(dong),將吹(chui)(chui)(chui)(chui)(chui)灰(hui)管(guan)以(yi)螺旋運(yun)(yun)動(dong)形式推入(ru)鍋爐(lu)(lu)煙(yan)氣(qi)(qi)通(tong)(tong)道。吹(chui)(chui)(chui)(chui)(chui)灰(hui)器(qi)閥門在噴(pen)嘴進入(ru)鍋爐(lu)(lu)內部(bu)(bu)后(hou)(hou)(hou)立即(ji)打開,吹(chui)(chui)(chui)(chui)(chui)掃過程開始。行(xing)(xing)走(zou)箱(xiang)持續(xu)將吹(chui)(chui)(chui)(chui)(chui)灰(hui)管(guan)推向(xiang)煙(yan)氣(qi)(qi)通(tong)(tong)道,直至噴(pen)嘴部(bu)(bu)位到(dao)達前(qian)部(bu)(bu)終點。
在此(ci)(ci)終點吹(chui)灰(hui)(hui)器(qi)行(xing)走箱(xiang)(xiang)撥(bo)動(dong)(dong)(dong)前(qian)(qian)端限位(wei)開(kai)(kai)關(guan),由(you)于程控裝置進行(xing)了吹(chui)灰(hui)(hui)器(qi)后退(tui)延遲設置,吹(chui)灰(hui)(hui)器(qi)將繼續向前(qian)(qian)移動(dong)(dong)(dong)至(zhi)吹(chui)灰(hui)(hui)器(qi)前(qian)(qian)端撞(zhuang)停(ting)塊,此(ci)(ci)時,齒輪箱(xiang)(xiang)中(zhong)移動(dong)(dong)(dong)傳動(dong)(dong)(dong)鏈脫開(kai)(kai),吹(chui)灰(hui)(hui)管停(ting)止移動(dong)(dong)(dong)僅(jin)作轉(zhuan)動(dong)(dong)(dong)。當(dang)(dang)吹(chui)灰(hui)(hui)器(qi)接到后退(tui)運行(xing)指(zhi)令后,齒輪箱(xiang)(xiang)中(zhong)移動(dong)(dong)(dong)傳動(dong)(dong)(dong)鏈嚙合,吹(chui)灰(hui)(hui)管以螺旋(xuan)運動(dong)(dong)(dong)形(xing)式后退(tui),當(dang)(dang)撥(bo)動(dong)(dong)(dong)后端限位(wei)開(kai)(kai)關(guan),閥門關(guan)閉。接著吹(chui)灰(hui)(hui)器(qi)不(bu)噴介質退(tui)回到停(ting)用位(wei)置,電機關(guan)閉。
由(you)于(yu)吹(chui)(chui)灰器(qi)(qi)每次運行(xing)吹(chui)(chui)灰管都要(yao)(yao)轉動一定的(de)角度(du),所(suo)以(yi)吹(chui)(chui)灰器(qi)(qi)每次運行(xing)的(de)吹(chui)(chui)掃軌(gui)跡都是不(bu)重(zhong)復的(de)。吹(chui)(chui)灰器(qi)(qi)主要(yao)(yao)由(you)大梁、齒(chi)輪(lun)箱(xiang)、行(xing)走箱(xiang)、吹(chui)(chui)灰內(nei)外(wai)管、噴嘴(zui)管、電器(qi)(qi)組件、閥(fa)門、開閥(fa)機(ji)構、前(qian)部(bu)托輪(lun)組及爐(lu)墻(qiang)接口箱(xiang)等組成。
◎ 設計特點(dian)
※少(shao) 維(wei) 護(hu):采(cai)用(yong)齒輪齒條(tiao)嚙合傳動驅動吹灰管(guan)前后運動,所(suo)有零(ling)部(bu)件極(ji)易維(wei)護(hu)。
※少 備 件:吹灰器采用與萊夢德其他類型吹灰器相同的閥門,使用戶備件庫存減少。
※多種墻(qiang)箱:吹(chui)灰器有正壓、負壓和消音墻(qiang)箱可供用戶選擇。※手(shou)(shou)動功能:吹(chui)灰器在失(shi)電(dian)時,可用搖(yao)把手(shou)(shou)搖(yao)電(dian)機后(hou)出(chu)軸。
※易于安裝:吹灰器(qi)前后(hou)兩(liang)點吊掛,以適應鍋爐爐膛水(shui)平(ping)和垂直(zhi)方向上的膨(peng)脹。
※傳動可靠:不(bu)受熱電機齒輪箱和連接(jie)吹灰管的行走箱不(bu)在同一箱體(ti)內,提高(gao)了(le)傳動裝(zhuang)置的可靠性(xing),解決(jue)了(le)齒輪箱潤(run)滑油滲(shen)漏的問題。
◎ 技術參數(shu)
吹掃(sao)介質(zhi):蒸汽
zui高(gao)介質溫(wen)度:~500℃
閥門材料:鉻鉬(mu)鋼(ANSI300或(huo)600級)
吹灰管材料:鉻(ge)鉬鋼(gang)或(huo)適合鍋爐工作條件的特殊鋼(gang)種T91/310S
內(nei)管材料:不(bu)銹鋼
噴(pen)嘴(zui)材(cai)料(liao):不銹鋼
傳動(dong)方式:單齒輪齒條嚙合傳動(dong)
配對法蘭:DN80 PN63 DIN2546標(biao)準,或按(an)用(yong)戶(hu)要求的標(biao)準
行 程:0.3-6.5m
蒸汽耗(hao)量:30-100kg/min
行(xing)走速度:0.72m/min
運行時間:50-760s
吹(chui)掃時間:45-745s
吹(chui)掃(sao)角度(du):0-360°
有效吹(chui)掃半徑:0.5-4.5m
推(tui)薦吹掃壓力:0.8-1.5MPa
電機參數:0.55KW,900r/min,三相,50Hz(220-380V),60Hz(440-480V)
重 量:200-1300Kg