過濾器和閥門應(yīng)用知識介紹?。?/title>
<div align="center"><span style="font-size:14px">作者：閥門， 來源：過濾器 發(fā)布時間：2019-07-01</span></div>
<span style="font-size:16px;"> 在工業(yè)生產(chǎn)中，閥門、過濾器、自控元件及儀表的型號、規(guī)格及各項參數(shù)應(yīng)符合設(shè)計文件要求，應(yīng)具有合格證書及使用說明書等技術(shù)文件。<br /> <img alt="閥門，過濾器" src="http://www.ektschina.com/d/file/telongzixun/2019-07-01/1daefa4878943169762507c06062886c.jpg" style="width: 473px; height: 516px;" /><br />一、壓力、溫度、液位、流量等自控元件及儀表，自動控制閥的控制和執(zhí)行器安裝應(yīng)符合設(shè)計文件的要求且應(yīng)符合下列規(guī)定：<br />1、對于包裝完好，進出口密封性能良好，經(jīng)檢查無銹蝕，無明顯缺陷，并在其保用期內(nèi)的自控元件及儀表，自動控制閥的控制和執(zhí)行器可直接安裝；不符合該條件的自控元件及儀表，自動控制閥的控制和執(zhí)行器應(yīng)按現(xiàn)行國家標準《自動化儀表工程施工及質(zhì)量驗收規(guī)范》GB 50093的有關(guān)規(guī)定試驗，試驗不合格的禁止安裝。<br />2、設(shè)備需要現(xiàn)場安裝的液位計或液位傳感器，應(yīng)嚴格按照設(shè)計和技術(shù)文件的要求確定基準位置。<br />3、低溫設(shè)備需要現(xiàn)場安裝的液位計或液位傳感器應(yīng)在保冷施工前標定、記錄基準位置。<br />4、 需要現(xiàn)場安裝的報警裝置在安裝前應(yīng)進行靈敏性檢驗。<br />5、低溫設(shè)備需要現(xiàn)場安裝的自控元件及儀表，應(yīng)按設(shè)計要求預留保冷層厚度，不應(yīng)埋入保冷層內(nèi)。<br />設(shè)計無要求時，冷間內(nèi)溫度計或溫度傳感器的安裝位置應(yīng)無遮擋、不受局部熱源和冷源的影響。<br />二、截止閥、節(jié)流閥、止回閥、自動控制閥的閥體、過濾器安裝應(yīng)符合設(shè)計文件要求及現(xiàn)行國家標準《工業(yè)閥門安裝使用維護一般要求》GB/T 24919的有關(guān)規(guī)定，且應(yīng)符合下列規(guī)定：<br />1、對于包裝完好，進出口密封性能良好，經(jīng)檢查無銹蝕，無明顯缺陷，并在其保用期內(nèi)的閥門按現(xiàn)行國家標準《壓力管道規(guī)范 工業(yè)管道四部分：制作與安裝 》GB/T20801.4的有關(guān)規(guī)定抽查合格后可直接安裝，不符合該條件的閥門應(yīng)拆卸、清洗，更換破損和失效元件，并按設(shè)計文件和技術(shù)文件的規(guī)定，進行壓力和密封試驗，試驗不合格的禁止安裝。<br />2、閥門成排安裝時，閥門手輪的中心宜在同一直線上。<br />3、低溫設(shè)備需要現(xiàn)場安裝的閥門、過濾器應(yīng)按設(shè)計要求預留保冷層厚度，不應(yīng)埋入保冷層內(nèi)。<br />4、止回閥和自動控制閥閥芯、過濾器濾芯的安裝應(yīng)在系統(tǒng)排污后進行，閥芯不可拆卸或按技術(shù)文件的要求不宜拆卸時，應(yīng)采取防止閥芯在安裝和排污過程中損壞的措施。<br /> 焊接時的溫度影響、排污過程中的雜質(zhì)等因素都有可能損壞閥芯，因此要求采取相應(yīng)的保護措施。閥門、過濾器在使用過程中往往需要檢查和維護，埋入設(shè)備的保冷層內(nèi)將影響這些工作的進行，因此要求按設(shè)計要求預留保冷層厚度。</span><br /><br /> </div>
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