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頂耕國(guó)際貿(mào)易供應(yīng)</p><div id="bfxnzvc" class="leftbox clearfix"><h1>湖北真空精煉真空管道蝶閥廠家供應(yīng) 頂耕國(guó)際貿(mào)易供應(yīng)</h1><div id="5enp7jl" class="proBig"><div id="gvcjqy7" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337275391/5992195.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="igsugxw" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337275391/5992195.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="87xypwn" 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>湖北真空精煉真空管道蝶閥廠家供應(yīng)</p><p><span>***更新：</span>2020-05-31 01:17:54</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="icj3ht2" 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: </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] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="poasjvx" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3xtkrik" class="box"><p><p> 閥門(mén)的種類(lèi)繁多，說(shuō)法也不完全統(tǒng)一，有的按用途分（如化工、石油，湖北真空精煉真空管道蝶閥廠家供應(yīng)、電站等）、有的按介質(zhì)分（如水蒸汽、空氣閥等）、有的按材質(zhì)分（如鑄鐵、鑄鋼、鍛鋼、不銹鋼、陶瓷、UPVC等）、有的按連接形式分（如內(nèi)螺紋、法蘭閥、對(duì)夾等）、有的按溫度分（如低溫閥、高溫閥等）。我國(guó)大多數(shù)習(xí)慣是按壓力和結(jié)構(gòu)種類(lèi)來(lái)區(qū)分。即：按公稱(chēng)壓力分：≤1.6MPa為低壓閥、壓力2.5、4.0、6.4MPa為中壓閥、≥10MPa為高壓閥、超過(guò)100MPa為超高壓閥。按結(jié)構(gòu)種類(lèi)分主要有： </p> <p> 旋塞閥、閘閥、截止閥、球閥—用于開(kāi)啟或關(guān)閉管道的介質(zhì)流動(dòng)。 </p> <p> 止回閥（包括底閥）—用于自動(dòng)防止管道內(nèi)的介質(zhì)倒流，湖北真空精煉真空管道蝶閥廠家供應(yīng)。 </p> <p> 節(jié)流閥—用于調(diào)節(jié)管道介質(zhì)的流量。 </p> <p> 蝶閥—用于開(kāi)啟或關(guān)閉管道內(nèi)的介質(zhì)。也可作調(diào)節(jié)用。 </p> <p> 安全閥—用于鍋爐，湖北真空精煉真空管道蝶閥廠家供應(yīng)、容器設(shè)備及管道上，當(dāng)介質(zhì)壓力超過(guò)規(guī)定數(shù)值時(shí)，能自動(dòng)排除過(guò)剩介質(zhì)壓力，保證生產(chǎn)運(yùn)行安全。 </p> <p> 減壓閥—用于自動(dòng)降低管道及設(shè)備內(nèi)介質(zhì)壓力。系使介質(zhì)經(jīng)過(guò)閥瓣的間隙時(shí)，產(chǎn)生阻力造成壓力損失，達(dá)到減壓目的。 </p> <p> 疏水器—用于蒸汽管道上自動(dòng)排除冷凝水，防止蒸汽損失或泄漏。 </p> <p> V型球閥—用于對(duì)介質(zhì)流量進(jìn)行調(diào)節(jié)，流量特性為等百分比。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北真空精煉真空管道蝶閥廠家供應(yīng)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337275391/5992195.png"></div><p> 液壓缸直接推拉驅(qū)動(dòng)式裝置結(jié)構(gòu)簡(jiǎn)單，形式變化多樣，作用在閥桿上的力和運(yùn)動(dòng)速度可調(diào)，控制靈活，安裝維護(hù)方便，工作環(huán)境適應(yīng)性強(qiáng)( 防塵、防潮、防爆) ，可遠(yuǎn)距離操控，適合管路在線流量精確控制等。但是油缸直立在閥門(mén)頂部高度尺寸較大，液壓缸活塞桿連接閥桿，由于油缸活塞的浮動(dòng)性造成閥門(mén)中的閥板不能長(zhǎng)時(shí)間精確定位，由于油缸結(jié)構(gòu)限制，在應(yīng)急狀態(tài)下液動(dòng)閥門(mén)本體不易實(shí)現(xiàn)人力驅(qū)動(dòng)閥門(mén)啟閉 </p> <p> 驅(qū)動(dòng)大中型的蝶閥、球閥和旋塞閥所采用的液壓驅(qū)動(dòng)裝置中，螺線擺動(dòng)油缸要優(yōu)于齒輪齒條式擺動(dòng)油缸。驅(qū)動(dòng)大中型口徑的閘閥和截止閥所采用的液壓驅(qū)動(dòng)裝置中，液壓馬達(dá)驅(qū)動(dòng)式要優(yōu)于液壓缸直接推拉驅(qū)動(dòng)式。對(duì)于精確控制閥門(mén)通過(guò)流量的調(diào)節(jié)閥采用液壓缸直接推拉驅(qū)動(dòng)式其調(diào)節(jié)流量的響應(yīng)速度快。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北真空精煉真空管道蝶閥廠家供應(yīng)" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737493554688/8379117.png"></div><p> 雙偏心和三偏心蝶閥的區(qū)別是什么？雙偏心蝶閥雙偏心蝶閥是哪兩個(gè)偏心？***個(gè)偏心是密封座中心線與閥軸中心線偏移一定的距離，使閥門(mén)密封座與軸互不干涉；第二個(gè)偏心是將閥軸中心線比閥體(或管道)中心線抬高一定距離，同時(shí)在蝶板上將裝閥軸的軸孔中心線比蝶板外圓中心線也偏移一定的距離。雙偏心蝶閥的閥座材質(zhì)使用四氟乙烯材料，可以有效的防腐蝕，此外也可以采用金屬密封閥座，來(lái)適應(yīng)高溫工況環(huán)境。但是采用金屬密封閥座的雙偏心蝶閥，蝶板與閥座的密封面是線接觸，密封屬于位置密封結(jié)構(gòu)，這種密封結(jié)構(gòu)不能耐高壓，如果在高壓的工況中使用會(huì)產(chǎn)生大量的泄漏，所以在高壓的工況環(huán)境或要求切斷嚴(yán)密的系統(tǒng)中，不要使用金屬密封閥座的雙偏心蝶閥。三偏心蝶閥三偏心蝶閥是哪三個(gè)偏心？***個(gè)偏心是閥軸位于閥板軸后面，使得密封能夠完全緊密環(huán)繞接觸整個(gè)閥座。第二個(gè)偏心是閥軸中心線偏離管道和閥門(mén)中心線，避免受閥門(mén)開(kāi)啟和關(guān)閉的干擾。第三個(gè)偏心是閥座錐體軸偏離閥軸中心線，這樣可以在關(guān)閉和開(kāi)啟過(guò)程中消除摩擦作用，并且實(shí)現(xiàn)環(huán)繞整個(gè)閥座的均勻一致的壓縮密封效果。三偏心蝶閥即吸收了其他蝶閥產(chǎn)品的優(yōu)點(diǎn)，又回避了其他蝶閥的不足，受到越來(lái)越多用戶(hù)和技術(shù)人員的重視。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖北真空精煉真空管道蝶閥廠家供應(yīng)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/91354.html</p></div></div></div></div></div><div id="8lxokmi" class="page-right twoColRt"><div id="hrtqs8q" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xbsjamt" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="e23fwdp" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢(xún)供應(yīng)" class="vcenter" 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