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clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</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>?昆明電動高真空閥門歡迎來電上海卓帕真空技術供應</p><div id="lrtqsb7" class="leftbox clearfix"><h1>昆明電動高真空閥門歡迎來電上海卓帕真空技術供應</h1><div id="mfc3l8a" class="proBig"><div id="zia8ba7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817511386719/5219473.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="n2curo4" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817511386719/5219473.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3c8c32c" 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>產品關鍵詞：</span>昆明電動高真空閥門,真空閥門</p><p><span>***更新：</span>2020-12-22 09:13:32</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rv7sxpu" 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="ys382fx" class="page-proshow02"><p class="title">詳細說明</p><div id="xgipbix" class="box"><p><p style="text-indent:25px">真空閥門是鑄造體的時候，有可能會存在有質量不高，閥體和閥蓋體上出現(xiàn)砂眼、松散組織、夾渣等缺陷。使用過程中閥門被重物撞擊后損壞閥體和閥蓋泄漏；閥門焊接不良，存在著夾渣、未焊接，應力裂紋等缺陷；這幾種都會造成閥體和閥蓋泄漏。如按以上幾種現(xiàn)象我們應該提高真空閥門的鑄造質量，安裝前嚴格按規(guī)定進行強度試驗；對氣溫在0°和0°以下的真空閥門，昆明電動高真空閥門，應進行保溫或拌熱，停止使用的閥門應排除積水；由焊接組成的真空閥閥體和閥蓋的焊縫，應按有關焊接操作規(guī)程進行，焊后還應進行探傷和強度試驗；閥門上禁止推放重物，不允許用手錘撞擊鑄鐵和非金屬閥門，昆明電動高真空閥門，大口徑閥門的安裝應有支架，昆明電動高真空閥門。閥門注脂時，要注意真空閥門開關位的問題。昆明電動高真空閥門</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明電動高真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817511386719/5219473.png"></div><p style="text-indent:25px">真空閥門在裝置前應保持枯燥，不可露天寄存。裝置蝶閥前要查看管道，保證管道內無焊渣等異物蝶閥閥體手動啟閉阻力適中，蝶閥扭矩與所選執(zhí)行器扭矩匹配。蝶閥連接用法蘭規(guī)范正確，管道對夾法蘭與蝶閥法蘭規(guī)范相符。建議使用蝶閥**法蘭，不得使用平焊法蘭。確認法蘭焊接無誤，蝶閥裝置結束后不得再焊接法蘭，避免燙壞橡膠件。裝好的管道法蘭要進行對中，并與放入的蝶閥進行對中。裝上一切的法蘭螺栓，并用手擰緊，將確認蝶閥與法蘭已然對中，然后當心的啟閉蝶閥，保證啟閉靈活。將閥門敞開，用扳手依照對角線次第將螺栓擰緊，無需墊圈，切勿將螺栓擰的過緊，以防造成閥圈的嚴峻變形，啟閉扭矩過大。昆明電動高真空閥門不要依靠真空閥門支持其它重物，不要在閥門上站立。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明電動高真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817602744141/9275395.png"></div><p style="text-indent:25px">真空閥門檢查項目包含哪些?閥體內外外表有無砂眼、裂紋等缺陷；閥座與閥體接合是否結實，閥芯與閥座是否符合，密封面有無缺陷；閥桿與閥芯連接是否靈活牢靠、閥桿有無彎曲，螺紋有無損壞、腐蝕；填料、墊圈是否老化損壞；閥門敞開是否靈活等。真空閥門管道施工時應注意：在安裝真空閥門之前，應清掃連接在管道內的灰塵、砂土以及焊接時噴漏的焊渣。安裝時，截止閥、止回閥和過濾器的方向均有規(guī)定。應確認閥體上所示的流向(箭頭方向)，安裝時流體的流向應與箭頭所示方向一致。為防止搬運時閥瓣受損，應在止回閥的閥體內放入填塞物。安裝管道時務必取出填塞物。</p><p style="text-indent:25px">真空閥門的種類繁多，且在真空系統(tǒng)中起著重要作用，通常按閥門的職能、結構型式、驅動方式、材料和用途進行分類，常見的真空閥門連接形式。法蘭連接是閥門中用得較多的連接形式。按結合面形狀又可分為以下幾種：光滑式：用于壓力不高的閥門。加工比較方便凹凸式：工作壓力較高，可使用中硬墊圈；榫槽式：可用塑性變形較大的墊圈，在腐蝕性介質中使用較普遍，密封效果較好。梯形槽式：用橢圓形金屬環(huán)作墊圈，使用于工作壓力≥64公斤/平方厘米的閥門，或高溫閥門。透鏡式：墊圈是透鏡形狀，用金屬制作。用于工作壓力≥100公斤/平方厘米的高壓閥門，或高溫閥門。O形圈式：這是一種較新的法蘭連接形式，它是隨著各種橡膠o型圈的出現(xiàn)，而發(fā)展起來的，它在密封效果上比一般平墊圈可靠。在真空閥門設計中，材料的冷焊是一個不可回避的問題，它可能出現(xiàn)在密封面上、法蘭連接處以及螺紋副上。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明電動高真空閥門,真空閥門" src="https://tyunfile.71360.com/UploadFile/shzpzkgs/637364817472421875/7366080.png"></div><p style="text-indent:25px">真空閥門震顫或不穩(wěn)定。查看控制信號是不是正常，再查看空氣過濾減壓閥減壓是不是正常，電氣閥門定位器內放大器部件問題或磁鋼有問題。壓差大，執(zhí)行組織剛度小也會形成震顫。填料過緊，對閥桿的上下動作阻力過大。真空閥門的裝置與保護應注意事項：手輪、手柄及傳動組織均不允許作起吊用，并嚴禁磕碰。雙閘板閘閥應筆直裝置(即閥桿處于筆直方位，手輪在*部)。帶有旁通閥的閘閥在開啟前應先打開旁通閥(以平衡進出口的壓差及減小開啟力)。帶傳動組織的閘閥，按產品使用說明書的規(guī)則裝置。真空閥門的流導通常以“當量管長度”列出，這里設管的公稱尺寸與閥門的公稱尺寸相同。昆明電動高真空閥門</p><p style="text-indent:25px">真空閥門長期不用而存放時，閥門應處于微啟狀態(tài)。昆明電動高真空閥門</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。昆明電動高真空閥門</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2513519.html</p></div></div></div></div></div><div id="o3npr2x" class="page-right twoColRt"><div id="nm8cegd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kjqspls" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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