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clearfix"><div id="vyqsmq2" class="twoCol"><div id="jce33oi" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_qitafamenbd/">其他閥門</a>?河南化工真空閥門客戶至上上海卓帕真空技術供應</p><div id="r29lhjy" class="leftbox clearfix"><h1>河南化工真空閥門客戶至上上海卓帕真空技術供應</h1><div id="xlxmgy8" class="proBig"><div id="thj7rq9" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817602744141/9275395.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="luw9vlf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817602744141/9275395.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="q7acw2h" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>河南化工真空閥門,真空閥門</p><p><span>***更新：</span>2021-02-02 07:11:25</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="88hzln4" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海卓帕真空技術有限公司</a></p><p><span>聯(lián)系人：</span>范裕軍</p><p><span>郵箱: </span>469585075@qq.com</p><p><span>電話: </span>17317798775</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.zapavac.cn</p><p><span>手機: </span>021-52999935</p><p><span>地址: </span>曹楊路1017號一幢三樓3193室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="fo3i3j9" class="page-proshow02"><p class="title">詳細說明</p><div id="pd8nfhb" class="box"><p><p style="text-indent:25px">假如真空閥門常常開關使用，每月至少潤滑一次。你的蒸汽管道上的減壓閥和管道壓力不匹配。但從基本原理上來說，還是能夠經(jīng)過蒸汽的。因為減壓閥是由出口的壓力來控制的，出口的壓力不行，河南化工真空閥門，主閥是處于全開狀態(tài)的。但假如長期下去還是有的問題的，所以才有一般減壓閥都要求進出口壓差≥0.2Mpa。真空閥門維修工作一般有主要內(nèi)容：真空閥門的清洗——檢修從工藝管線上拆開下來的閥，把它上面所有被工藝介質浸漬過的零部件清洗潔凈。以免某些有腐蝕性或其他傷害作用的流體對人和設備形成丟失。一起應零部件顯露外表的銹蝕。電動單座調節(jié)閥的拆開——為了對全體零部件作查看以決議修補和替換的范圍。首要應把執(zhí)行組織和閥卸開。拆開時保護好經(jīng)過精細加工如閥芯、閥座、閥桿、推桿、軸套等零件以及所有零部件的精細加工面，河南化工真空閥門，河南化工真空閥門，防止損壞，以使檢修費用低，拆開閥座應該用**工具。各種真空閥門根據(jù)應用的真空領域和使用目的而選定。河南化工真空閥門</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南化工真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817602744141/9275395.png"></div><p style="text-indent:25px">真空閥門毛坯的制造工藝及檢驗：真空閥門使用在流體管路上，它本身承受各種溫度、壓力的介質的沖刷和腐蝕，若毛坯存在極小的缺陷也會發(fā)生滲漏，而造成介質的損失和浪費。當輸送有毒有害、易燃、易爆或放射性介質時，閥門滲漏往往會引起中毒火災或污染等重大事故，并迫使系統(tǒng)或工廠停產(chǎn)。為了確保閥門的安全可靠性，除了在出廠前以公稱壓力的1.25～1.5倍的試驗壓力對閥門進行強度試驗外，對毛坯的外部質量和內(nèi)部質量要求也很嚴格。真空閥門的鑄件毛坯是結構較復雜的薄壁殼體件，鑄件要求表面光潔、鑄字清晰，特別是要有致密的組織，不得有氣孔、縮孔、疏松、裂紋和包砂等缺陷。為了滿足上述要求，鑄造時需采取一系列工藝措施，如選用高耐火度的造型材料并控制型砂水分，造型時應分層打實以保證砂型硬度，采用合理的澆冒口系統(tǒng)及嚴格控制澆注速度和溫度等?？傊Ｓ捎诩夹g要求較高，閥門毛坯的鑄造工藝比一般鑄件復雜。真空閥門毛坯除進行尺寸、位置精度及外觀檢查外，有的還要進行金相組織、化學成分、力學性能、耐腐蝕性能和無損探傷等多項檢驗，以排除導致閥門殼體滲漏的缺陷。電動高真空閥門真空閥門是在真空系統(tǒng)中用來隔離（切斷）氣流、調節(jié)氣流流量、分配氣流的真空元件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南化工真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817224355469/5814340.png"></div><p style="text-indent:25px">真空閥門如何維護?明確目的對壓力維護的目的，在于延長真空閥門壽命和保證正常運行。對于經(jīng)常與閥桿螺母摩擦的閥桿螺紋，可以涂一點黃干油、二硫化鉬或石墨粉，目的是潤滑減少摩擦阻力。流水不腐，戶樞不蠹。不僅經(jīng)常轉動的自力式壓力調節(jié)閥要有潤滑措施。對于不經(jīng)常啟閉的自力式壓力調節(jié)閥，也要定期轉動手輪，對閥桿螺紋添加潤滑劑，以防生銹。真空閥門，要對閥桿加保護套，目的是防止雨、雪、塵土等進入真空閥門內(nèi)部導致銹污。如真空閥門系機械待動，要按時對變速箱添加潤滑油。要經(jīng)常保持真空閥門的清潔。</p><p style="text-indent:25px">先查明真空閥門上、下游管道確已卸除壓力后，才能進行拆卸分解操作。非金屬零件清洗后應立即從清洗劑中取出，不得長時間浸泡。裝配時法蘭上的螺栓對稱、逐步、均勻地擰緊。清洗劑應與閥門中的橡膠件、塑料件、金屬件及工作介質(例如燃氣)等均相容。工作介質為燃氣時，可用汽油(GB484-89)清洗金屬零件。非金屬零件用純凈水或酒精清洗。分解下來的單個零件可以用浸洗方式清洗。尚留有未分解下來的非金屬件的金屬件可采用干凈的細潔的浸漬有清洗劑的綢布(為避免纖維脫落粘附在零件上)擦洗。清洗時須去除粘附在壁面上的油脂、污垢、積膠、灰塵等。分解及再裝配時小心防止損傷零件的密封面，特別是非金屬零件，取出O型圈時宜使用**工具。清洗后需待被洗壁面清洗劑揮發(fā)后(可用未浸清洗劑的綢布擦)進行裝配，但不得長時間擱置，否則會生銹、被灰塵污染。新零件在裝配前也需清洗干凈。使用潤滑脂潤滑。潤滑脂應與閥門金屬材料、橡膠件、塑料件及工作介質均相容。工作介質為燃氣時，可用例如特221潤滑脂。在密封件安裝槽的表面上涂一薄層潤滑脂，在橡膠密封件上涂一薄層潤滑脂，閥桿的密封面及摩擦面上涂一薄層潤滑脂。真空閥門結構要簡單，開關輕便省力，有標志，傳動機構在高壓側。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南化工真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817518544922/3934363.png"></div><p style="text-indent:25px">真空閥門的裝置前仔細閱讀說明書：堵截有關電源并由專業(yè)技術人員進行裝置。水流方向同閥體上的箭頭方向相同。閥體須坐落盤管接水盤上方，以確保呈現(xiàn)滴水時落入接水盤中。閥體及驅動器裝置于垂直方向±60℃范圍內(nèi)，其上方應至少有30mm空間用于拆裝。與周圍管道、設備、建筑物保持足夠的維修操作空間，裝置在維修人員經(jīng)過檢修孔能觸及到的地方。閥體裝置完畢并與管路經(jīng)過試壓后才可裝置驅動器。若驅動器已經(jīng)裝到閥體上，在裝置調試過程中絕不能對驅動器施力，否則會損壞驅動器。裝置完畢并查看正確無誤后，通電調試。至少應觀察驅動器的三個完整運行周期，確定所有部件正確停止。經(jīng)過無水調試合格后，再進行通水測試。體系上下水的壓差嚴厲控制在0.15MPa以內(nèi)，以確保電動調節(jié)閥對水流開關的有效性。真空閥門震顫或不穩(wěn)定。電動高真空閥門</p><p style="text-indent:25px">凡具有驅動裝置的真空閥門，試驗其密封性時應用驅動裝置關閉閥門拮進行密封性試驗。河南化工真空閥門</p><p style="text-indent:25px">在真空閥門的閥體泄漏處介質壓力低，漏量小的情況下，可用一個內(nèi)徑比泄漏點大一倍以上的螺帽，讓泄漏介質從螺帽內(nèi)流出，把螺帽焊在閥體上，再配一個與螺帽相同規(guī)格的螺栓，在螺帽底部放置一塊橡膠墊或石棉墊，將螺栓頂部繞上生膠帶擰入螺帽內(nèi)，達到阻止泄漏的目的。但是對于泄漏介質壓力高，泄漏量大的真空閥閥體，就需要用引流焊接法。首先用一塊鐵板，中間開設一圓孔，把一個與圓孔相稱口徑的隔離閥焊接在鐵板的圓孔上，打開隔離閥，把鐵板**孔對準泄漏點貼合在閥體，讓泄漏介質經(jīng)鐵板**孔與隔離閥流出。河南化工真空閥門</p></p><br /><p>文章來源地址: 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