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clearfix"><div id="ub37rym" class="twoCol"><div id="bziz97h" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁(yè)?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_jxjxysb/">機(jī)械及行業(yè)設(shè)備</a>?<a href="http://m.cdcfah.com/cp/second-jxjxysb_famenti/">閥門(mén)</a>?<a href="http://m.cdcfah.com/cp/third-famenti_diefakna/">蝶閥</a>?重慶專(zhuān)業(yè)真空管道蝶閥泄露頂耕國(guó)際貿(mào)易供應(yīng)</p><div id="82osmiu" class="leftbox clearfix"><h1>重慶專(zhuān)業(yè)真空管道蝶閥泄露頂耕國(guó)際貿(mào)易供應(yīng)</h1><div id="25oaua7" class="proBig"><div id="8x7qofw" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="n8mzryf" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="oxzlsjq" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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(guān)鍵詞：</span>重慶專(zhuān)業(yè)真空管道蝶閥泄露</p><p><span>***更新：</span>2020-06-03 07:13:36</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="2ohtfw8" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國(guó)際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來(lái)</p><p><span>郵箱: </span></p><p><span>電話(huà): </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370室</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="7awda3f" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="uxe3sdk" class="box"><p><p> <p> 國(guó)外閥門(mén)密封等級(jí)的選用 </p> 前蘇聯(lián)對(duì)閥門(mén)密封等級(jí)分類(lèi)主要是20世紀(jì)50年代應(yīng)用，隨著前蘇聯(lián)的解體，現(xiàn)大多數(shù)國(guó)家都不選用此密封等級(jí)分類(lèi)，而是選用歐美標(biāo)準(zhǔn)的密 </p> <p> <br /> </p> <p> 封等級(jí)分類(lèi)。歐洲標(biāo)準(zhǔn)EN 12266—1密封等級(jí)分類(lèi)符合國(guó)際標(biāo)準(zhǔn)化組織標(biāo)準(zhǔn)ISO 5208的規(guī)定，但缺AA、CC和EE三個(gè)等級(jí)，重慶專(zhuān)業(yè)真空管道蝶閥泄露，重慶專(zhuān)業(yè)真空管道蝶閥泄露。ISO 5208與1999版相比，新增了AA，重慶專(zhuān)業(yè)真空管道蝶閥泄露、CC、E、EE、F和G六個(gè)等級(jí)。ISO 5208標(biāo)準(zhǔn)給出了與API 598和EN 12266標(biāo)準(zhǔn)幾個(gè)密封等級(jí)的比較。 </p> <p> <br /> </p> <p> ④。其他公稱(chēng)尺寸密封等級(jí)的比較可按口徑計(jì)算泄漏量得出 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶專(zhuān)業(yè)真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png"></div><p> 盤(pán)根應(yīng)逐圈安放壓緊，接頭應(yīng)成30℃或45℃；3、使用期過(guò)長(zhǎng)、老化、損壞的填料應(yīng)及時(shí)更換；4、閥桿彎曲、磨損后應(yīng)進(jìn)矯直、修復(fù)，對(duì)損壞嚴(yán)重的應(yīng)及時(shí)更換；5、填料應(yīng)按規(guī)定的圈數(shù)安裝，壓蓋應(yīng)對(duì)稱(chēng)均勻地把緊，壓套應(yīng)有5mm以上的預(yù)緊間隙；6、損壞的壓蓋、螺栓及其他部件，應(yīng)及時(shí)修復(fù)或更換；7、應(yīng)遵守操作規(guī)程，除撞擊式手輪外，以勻速正常力量操作；8、應(yīng)均勻?qū)ΨQ(chēng)擰緊壓蓋螺栓，壓蓋與閥桿間隙過(guò)小，應(yīng)適當(dāng)增大其間隙；壓蓋與閥桿間隙過(guò)大，應(yīng)予更換。密封面的泄露原因：1、密封面研磨不平，不能形成密合線(xiàn)；2、閥桿與關(guān)閉件的連接處頂心懸空、不正或磨損；3、閥桿彎曲或裝配不正，使關(guān)閉件歪斜或不逢中；4、密封面材質(zhì)量選用不當(dāng)或沒(méi)有按工況條件選用閥。維護(hù)方法：1、按工況條件正確選用顛墊片的材料和型式；2、精心調(diào)節(jié)，平穩(wěn)操作；3、應(yīng)均勻?qū)ΨQ(chēng)地?cái)Q螺栓，必要時(shí)應(yīng)使用扭力扳手，預(yù)緊力應(yīng)符合要求，不可過(guò)大或小。法蘭和螺紋連接處應(yīng)有一定的預(yù)緊間隙；4、墊片裝配應(yīng)逢中對(duì)正，受力均勻，墊片不允許搭接和使用雙墊片；5、靜密封面腐蝕、損壞加工、加工質(zhì)量不高，應(yīng)進(jìn)行修理、研磨，進(jìn)行著色檢查，使靜密封面符合有關(guān)要求；6、安裝墊片時(shí)應(yīng)注意清潔，密封面應(yīng)用煤油清。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶專(zhuān)業(yè)真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg"></div><p> 美國(guó)國(guó)家標(biāo)影美國(guó)儀表協(xié)會(huì)標(biāo)準(zhǔn)ANSI／FCI 70-2(ASME B16．104)適用于控制閥密封等級(jí)的規(guī)定。工程設(shè)計(jì)中應(yīng)根據(jù)介質(zhì)的特性和閥 </p> <p> <br /> </p> <p> 門(mén)的開(kāi)啟頻率等因素考慮選擇金屬?gòu)椥悦芊饣蚪饘倜芊狻＝饘倜芊饪刂崎y密封等級(jí)應(yīng)在訂貨合同中規(guī)定。根據(jù)經(jīng)驗(yàn)，對(duì)于金屬密封控制閥，I、Ⅱ、Ⅲ級(jí)要求較低，工程設(shè)計(jì)中選用的比較少，通常一般金屬密封的控制閥比較低選用Ⅳ級(jí)，比較關(guān)鍵的控制閥選用V或Ⅵ級(jí)。某乙烯裝置火炬系統(tǒng)的控制閥設(shè)計(jì)，選用了金屬密封Ⅳ級(jí)要求，運(yùn)行良好。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶專(zhuān)業(yè)真空管道蝶閥泄露" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/129618.html</p></div></div></div></div></div><div id="nqx2m3q" class="page-right 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