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id="mtybh25oa2z" class="art-body"> <div>　　水位計(jì)為什么要進(jìn)行沖洗？水位計(jì)沖洗方式有哪些？</div><div>　　鍋爐在運(yùn)行中，含有雜質(zhì)或鹽類的水或蒸汽會(huì)進(jìn)入水位計(jì)中的汽、水連通管和玻璃管內(nèi)。這些雜質(zhì)和鹽類會(huì)粘結(jié)在汽水連通管與玻璃管的內(nèi)壁上，時(shí)間久了會(huì)使汽、水連通管截面逐漸減小，直至水位計(jì)不能真實(shí)地反映出鍋筒的水位。玻璃管也會(huì)變得模糊不清，甚至形成假水位而造成缺水或滿水事故。所以，必須經(jīng)常保持水位計(jì)的靈敏度。為保證水位計(jì)工作可靠，鍋爐在運(yùn)行中，每班必須至少?zèng)_洗一次，如出現(xiàn)兩只水位計(jì)水位不一致應(yīng)立即查找原因，檢查是否旋塞漏水、漏汽，水、汽連通管是否堵塞，旋塞孔是否堵塞，爐水堿度是否較高等問(wèn)題。</div><div>　　水位計(jì)的沖洗方式：</div><div>　　1、汽沖洗</div><div>　　1.1 將水位計(jì)的一、二次閥*關(guān)閉，開(kāi)排污閥。</div><div>　　1.2 開(kāi)啟汽側(cè)一次閥至全開(kāi)，將汽側(cè)二次閥緩慢開(kāi)啟1~1/5圈，利用高壓蒸汽沖洗結(jié)垢的云母片。</div><div>　　1.3 通過(guò)控制汽側(cè)二次閥的開(kāi)度來(lái)調(diào)節(jié)高壓蒸汽的流量，沖洗時(shí)間1～2分鐘（時(shí)間不宜過(guò)長(zhǎng)）。</div><div>　　1.4 若水位計(jì)已清晰，可停止沖洗工作。</div><div>　　1.5 沖洗完畢。順序關(guān)閉一次閥、二次閥、排污閥。</div><div>　　1.6 將水位計(jì)投運(yùn)。</div><div>　　2、水沖洗</div><div>　　2.1 關(guān)閉汽包水位計(jì)汽側(cè)一、二次閥、水側(cè)二次閥，隔離汽包水位計(jì)。</div><div>　　2.2 打開(kāi)汽包水位計(jì)排污閥，待水放凈后關(guān)閉排污閥。</div><div>　　2.3 沖洗水位計(jì)時(shí)由開(kāi)、關(guān)水側(cè)二次閥來(lái)控制沖洗水的壓力，緩慢并微開(kāi)汽包水位計(jì)水側(cè)二次閥，使水依次流過(guò)水側(cè)二次閥、水汽側(cè)閥之間的連通管、汽側(cè)二次閥、水位計(jì)，使水位計(jì)充滿水。</div><div>　　2.4 關(guān)閉水側(cè)二次閥，開(kāi)啟排污閥，依靠水位計(jì)內(nèi)的壓力與水的自重帶走污垢。</div><div>　　2.5 反復(fù)沖洗幾次后檢查，若水位計(jì)已清晰，可停止沖洗工作。</div><div>　　2.6 將水位計(jì)投運(yùn)。</div><div>　　3、水位計(jì)的投運(yùn)</div><div>　　3.1 開(kāi)啟汽水側(cè)一次閥。</div><div>　　3.2 將水位計(jì)的汽側(cè)二次閥緩慢開(kāi)啟1/5圈，再將水側(cè)二次閥緩慢開(kāi)啟1/5圈，即將關(guān)閉狀態(tài)閥門的手輪逆時(shí)針旋轉(zhuǎn)1/5圈，待水位正常后，汽閥、水閥交替開(kāi)啟，直至全開(kāi)。否則如水位計(jì)閥門一次全開(kāi)，保險(xiǎn)子會(huì)將通道堵死，出現(xiàn)假水位而造成嚴(yán)重事故。</div><div>　　3.3 如果因錯(cuò)誤操作引起保險(xiǎn)子堵死通道時(shí)，應(yīng)立即處理，處理方法是：立即關(guān)閉閥門，不得延誤時(shí)間，然后按上述開(kāi)啟閥門方法重新操作一次。</div><div>　　3.4 鍋爐正常運(yùn)行時(shí)要全開(kāi)水位計(jì)的汽、水閥門否則保險(xiǎn)子起不到保護(hù)作用。</div> </div> <div id="mtybh25oa2z" class="art-next"> <dl class="shangxia"> <dd>上一篇：<a 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