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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(guān)鍵詞：</span>上海鋼廠真空管道蝶閥品牌</p><p><span>***更新：</span>2020-06-01 06:16:59</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="t8btqsj" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-61637356</p><p><span>地址: </span>大葉公路5225號1幢2370室</p><p>[當(dāng)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="8j3gdkm" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vn3fct2" class="box"><p><p> 優(yōu)點 </p> <p> 1、啟閉方便迅速、省力、流體阻力小，可以經(jīng)常操作。 </p> <p> 2、結(jié)構(gòu)簡單，外形尺寸小，結(jié)構(gòu)長度短，體積小，重量輕，適用于大口徑的閥門。 </p> <p> 3、可以運送泥漿，在管道口積存液體**少。 </p> <p> 4、低壓下，可以實現(xiàn)良好的密封。 </p> <p> 5、調(diào)節(jié)性能好。 </p> <p> 6、全開時閥座通道有效流通面積較大，流體阻力較小，上海鋼廠真空管道蝶閥品牌。 </p> <p> 7、啟閉力矩較小，由于轉(zhuǎn)軸兩側(cè)蝶板受介質(zhì)作用基本相等，上海鋼廠真空管道蝶閥品牌，而產(chǎn)生轉(zhuǎn)矩的方向相反，因而啟閉較省力。 </p> <p> 8、密封面材料一般采用橡膠、塑料、故低壓密封性能好。 </p> <p> 9，上海鋼廠真空管道蝶閥品牌、安裝方便。 </p> <p> 10、操作靈活省力，可選擇手動、電動、氣動、液壓方式。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海鋼廠真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png"></div><p> 閥門材料的選用原則閥門材料的選用原則主要包括：閥體材料選用、閥門內(nèi)件選用、閥座密封面――軟閥座、閥桿密封――逸散性排放、閥蓋墊片。閥門常用材料的性能本文介紹了閥門常用材料的性能，比如：鑄鐵、碳素鋼、不銹鋼、銅合金、鋁合金、鈦合金、鋯合金、陶瓷、玻璃鋼、塑料、襯里。閥門連接端常見的幾種連接形式正確、合適地選擇閥門端部連接結(jié)構(gòu)，才能保證閥門順利安裝使用。閥門連接端連接形式通常分為：螺紋式、法蘭式、焊接式、卡箍及卡套式。閥門的幾種常用分類方法閥門的分類方法有很多種，分類方法不同，結(jié)果也不相同，本文講述了閥門的幾種常用分類方法。真空先導(dǎo)式真空安全閥設(shè)計本文主要討論了主安全閥的閥瓣設(shè)計思路，從選型分析到主安全閥閥瓣的設(shè)計、閥瓣活塞體的設(shè)計及閥瓣活塞體“O”形密封圈設(shè)計的優(yōu)點。放氣閥的工作原理及結(jié)構(gòu)示意圖放氣閥是向真空腔體內(nèi)導(dǎo)入氣體，以破壞真空的閥門(圖1)。針對超高真空系統(tǒng)，一般情況下導(dǎo)入干燥的氮氣，以避免真空腔體內(nèi)壁大量吸附水蒸氣。史上**全的閥門圖形符號及說明閥門圖形符號是對閥門簡單的圖形標(biāo)注，一般用于制圖等領(lǐng)域。閥門圖形符號包含了球閥、蝶閥、止回閥等多種常用閥門的符號信息。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海鋼廠真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg"></div><p> 確定調(diào)節(jié)閥口徑的七個步驟是什么？ </p> <p> <br /> </p> <p> 1）確定計算流量——Qmax、Qmin </p> <p> 2）確定計算壓差——根據(jù)系統(tǒng)特點選定阻力比S值，然后確定計算（閥全開時）壓差； </p> <p> 3）計算流量系數(shù)——選擇合適的計算公式圖表或軟件求KV的max和min； </p> <p> 4）KV值選取——根據(jù)KV的max值在所選產(chǎn)品系列中**接近一檔的KV，得到初選口徑； </p> <p> 5）開度驗算——要求Qmax時≯90％閥開度；Qmin時≮10％閥開度； </p> <p> 6）實際可調(diào)比驗算——一般要求應(yīng)≮10；R實際＞R要求 </p> <p> 7）口徑確定——若不合格重選選KV值，再驗證。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海鋼廠真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/104931.html</p></div></div></div></div></div><div id="ijg2zln" class="page-right twoColRt"><div id="provxeg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dk8g7g9" 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(yīng)" class="vcenter" 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