過濾器和閥門應用知識介紹?。?/title>
<div align="center"><span style="font-size:14px">作者：閥門， 來源：過濾器 發布時間：2019-07-01</span></div>
<span style="font-size:16px;"> 在工業生產中，閥門、過濾器、自控元件及儀表的型號、規格及各項參數應符合設計文件要求，應具有合格證書及使用說明書等技術文件。<br /> <img alt="閥門，過濾器" src="http://www.xczscq.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行器安裝應符合設計文件的要求且應符合下列規定：<br />1、對于包裝完好，進出口密封性能良好，經檢查無銹蝕，無明顯缺陷，并在其保用期內的自控元件及儀表，自動控制閥的控制和執行器可直接安裝；不符合該條件的自控元件及儀表，自動控制閥的控制和執行器應按現行國家標準《自動化儀表工程施工及質量驗收規范》GB 50093的有關規定試驗，試驗不合格的禁止安裝。<br />2、設備需要現場安裝的液位計或液位傳感器，應嚴格按照設計和技術文件的要求確定基準位置。<br />3、低溫設備需要現場安裝的液位計或液位傳感器應在保冷施工前標定、記錄基準位置。<br />4、 需要現場安裝的報警裝置在安裝前應進行靈敏性檢驗。<br />5、低溫設備需要現場安裝的自控元件及儀表，應按設計要求預留保冷層厚度，不應埋入保冷層內。<br />設計無要求時，冷間內溫度計或溫度傳感器的安裝位置應無遮擋、不受局部熱源和冷源的影響。<br />二、截止閥、節流閥、止回閥、自動控制閥的閥體、過濾器安裝應符合設計文件要求及現行國家標準《工業閥門安裝使用維護一般要求》GB/T 24919的有關規定，且應符合下列規定：<br />1、對于包裝完好，進出口密封性能良好，經檢查無銹蝕，無明顯缺陷，并在其保用期內的閥門按現行國家標準《壓力管道規范 工業管道四部分：制作與安裝 》GB/T20801.4的有關規定抽查合格后可直接安裝，不符合該條件的閥門應拆卸、清洗，更換破損和失效元件，并按設計文件和技術文件的規定，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、低溫設備需要現場安裝的閥門、過濾器應按設計要求預留保冷層厚度，不應埋入保冷層內。<br />4、止回閥和自動控制閥閥芯、過濾器濾芯的安裝應在系統排污后進行，閥芯不可拆卸或按技術文件的要求不宜拆卸時，應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、排污過程中的雜質等因素都有可能損壞閥芯，因此要求采取相應的保護措施。閥門、過濾器在使用過程中往往需要檢查和維護，埋入設備的保冷層內將影響這些工作的進行，因此要求按設計要求預留保冷層厚度。</span><br /><br /> </div>
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