热久在线_弱壓脈動(dòng)條帶除塵器的踐行和養護-東莞華之通環(huán)?？萍加邢薰?/title> <meta name="keywords" content="脈沖布袋除塵器,脈沖布袋除塵器,旋風(fēng)除塵器,東莞除塵器降溫設備,凈化設備" /> <meta name="description" content="清灰采用壓縮空氣進(jìn)行噴吹，空氣壓力一般保持在0.20.3MPa，經(jīng)過(guò)油水分離以及干燥處理后，由脈沖閥閃動(dòng)對布袋進(jìn)行清灰操作，在脈沖閥開(kāi)啟瞬間，氣包中的壓縮空氣經(jīng)脈沖閥進(jìn)入噴吹管，經(jīng)過(guò)噴嘴射向濾袋袋口，同時(shí)誘導數倍于壓縮空氣的二次氣流一同進(jìn)入濾袋，使布袋上的粉塵被清落，落入灰斗中的粉塵由卸灰裝置排除，完成整個(gè)清灰過(guò)程?！　〉蛪好}沖布袋除塵器運行中的故障及分析按照除塵器發(fā)生故障的部位大體可以分為：噴吹" /> <link href="/favicon.ico" rel="shortcut icon" /> <link rel="stylesheet" href="http://img.dghuatonghb.com/staticres/css/index.css?v=12345">  <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><ruby id="6sf22"><dfn id="6sf22"><nav id="6sf22"></nav></dfn></ruby><rp id="6sf22"></rp><small id="6sf22"><ol id="6sf22"></ol></small><nobr id="6sf22"><bdo id="6sf22"><xmp id="6sf22"></xmp></bdo></nobr><mark 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<p>清灰采用壓縮空氣進(jìn)行噴吹，空氣壓力一般保持在0.20.3MPa，經(jīng)過(guò)油水分離以及干燥處理后，由脈沖閥閃動(dòng)對布袋進(jìn)行清灰操作，在脈沖閥開(kāi)啟瞬間，氣包中的壓縮空氣經(jīng)脈沖閥進(jìn)入噴吹管，經(jīng)過(guò)噴嘴射向濾袋袋口，同時(shí)誘導數倍于壓縮空氣的二次氣流一同進(jìn)入濾袋，使布袋上的粉塵被清落，落入灰斗中的粉塵由卸灰裝置排除，完成整個(gè)清灰過(guò)程。</p><p><br/></p><p><br/></p><p>　　低壓脈沖布袋除塵器運行中的故障及分析按照除塵器發(fā)生故障的部位大體可以分為：噴吹系統故障、濾料故障、電氣控制系統故障等幾個(gè)部分，以下分別對各個(gè)系統可能出現的問(wèn)題分別進(jìn)行討論。</p><p><br/></p><p><br/></p><p>　　噴吹系統故障噴吹系統是將壓縮空氣經(jīng)過(guò)油水分離、加溫干燥、穩壓輸出、脈沖閥閃動(dòng)進(jìn)行噴吹操作的一組構件。</p><p><br/></p><p><br/></p><p>　　油水分離的作用是將壓縮空氣中的油水分離出來(lái)，避免油污損壞脈沖閥以及造成布袋糊袋，油水分離器的主要故障是：堵塞、油水分離不清，造成除塵器故障主要有：脈沖閥膜片卡死，不能閃動(dòng)；水和油污進(jìn)入布袋、造成布袋糊袋；水和油污在氣路中，造成其他的一些機械類(lèi)故障。加溫干燥是提升壓縮空氣的溫度，提高其露點(diǎn)，減少壓縮空氣的含水率，是對壓縮空氣進(jìn)行油水分離后的進(jìn)一步處理。</p><p><br/></p><p><br/></p><p>　　穩壓輸出是將主管或自備壓縮空氣機的壓力通過(guò)減壓閥調整到工藝規定的壓力進(jìn)行噴吹的一組減壓裝置，噴吹壓力過(guò)高會(huì )造成除塵器袋口磨損偏大，嚴重影響布袋的使用壽命，同時(shí)也會(huì )造成脈沖閥膜片損壞以及脈沖閥密封裝置被擊穿，噴吹壓力過(guò)小會(huì )造成噴吹無(wú)力不能有效清灰噴，低壓脈沖除塵器一般的噴吹壓力保持在0.20.4MPa，新建布袋除塵器噴吹的壓力一般偏低一些，保持在0.3MPa以下，布袋役期較長(cháng)的除塵器，噴吹壓力偏高一些，一般在0.3MPa以上，最高不能超過(guò)脈沖閥閃動(dòng)是實(shí)現脈沖噴吹的最終實(shí)現手段，目前煉鐵廠(chǎng)所使用的脈沖閥全部采用電氣信號由PLC模塊集中控制，脈沖閥一次噴吹時(shí)間一般為6585ms，噴吹間隔為13s，脈沖周期過(guò)長(cháng)，造成噴吹效果下降，除塵器壓阻變大，脈沖周期過(guò)斷，噴吹過(guò)度，破壞粉塵初層，影響布袋使用壽命以及除塵效果，應根據適時(shí)調整噴吹間隔，在工藝表現上，綜合噴吹壓力的設定，一般保持除塵器壓力在1200Pa以下即為合適的噴吹間隔。</p><p><br/></p><p>　　脈沖閥主要故障一般為：</p><p><br/></p><p>　　1）脈沖閥密封墊被擊穿，</p><p><br/></p><p>　　2）脈沖閥電氣控制失靈，</p><p><br/></p><p>　　3）膜片損壞等幾個(gè)故障。</p><p><br/></p><p>　　其中以前兩個(gè)故障最為常見(jiàn)，布袋除塵器的頂部一般都是敞開(kāi)的，由于工況的影響，脈沖閥的密封橡膠墊很容易老化失效，在壓縮空氣的作用下，容易發(fā)生漏氣的現象，當漏氣現象發(fā)生后，泄漏點(diǎn)會(huì )逐漸增大，最終導致?lián)舸?，造成噴吹氣包中的壓力下降；電氣控制線(xiàn)路由于灰塵、雨水等因素的影響，會(huì )造成銹蝕或短路，從而使電氣脈沖閥得不到電氣信號，造成脈沖閥不動(dòng)作，膜片的損壞，從目前我廠(chǎng)使用的狀況來(lái)看，還沒(méi)有碰到，發(fā)生的頻率比較少。</p><p><br/></p> <div id="ssuscoas" class="clear"></div> </div> <div id="ssuscoas" class="jiathis_style"> <div id="ssuscoas" class="bdsharebuttonbox bdshare-button-style0-16" 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