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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="npri777" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864802158203/7838338.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vqn83ev" 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>新疆維吾爾自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>阿克蘇高溫球閥報(bào)價(jià)</p><p><span>***更新：</span>2020-05-24 16:44:05</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7d8o4yp" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新疆遠(yuǎn)大通用閥門(mén)有限公司</a></p><p><span>聯(lián)系人：</span>李嘉豪</p><p><span>郵箱: </span>1183099099@qq.com</p><p><span>電話: </span>18999955968</p><p><span>傳真: </span>0991_6877477</p><p><span>網(wǎng)址: </span>http://www.xjyuanda.com</p><p><span>手機(jī): </span>0991-6877477</p><p><span>地址: </span>烏魯木齊市高新技術(shù)產(chǎn)業(yè)開(kāi)發(fā)區(qū)（新市區(qū)）清水街213號(hào)</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="npbflxo" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="fmip7h2" class="box"><p><p> 當(dāng)閥板平面與管子軸線一致時(shí)，為全開(kāi)；閘板平面與管子軸線垂直時(shí)，為全閉。蝶閥閥體長(zhǎng)度小，流動(dòng)阻力小，比閘閥和截止閥價(jià)格高。[1]（二）止回閥這類(lèi)閥門(mén)用于防止介質(zhì)倒流，利用流體自身的動(dòng)能自行開(kāi)啟，反向流動(dòng)時(shí)自動(dòng)關(guān)閉。常設(shè)于水泵的出口、疏水器出口以及其他不允許流體反向流動(dòng)的地方。止回閥分旋啟式、升降式和對(duì)夾式三種。對(duì)于旋啟式止回閥，流體只能從左向右流動(dòng)時(shí)。反向流動(dòng)時(shí)自動(dòng)關(guān)閉。對(duì)于升降式止回閥，流體從左向右流動(dòng)時(shí)，閥芯抬起，形成通路，反向流動(dòng)時(shí)閥芯被壓緊到閥座上而被關(guān)閉，阿克蘇高溫球閥報(bào)價(jià)，阿克蘇高溫球閥報(bào)價(jià)。對(duì)于對(duì)夾式止回閥，阿克蘇高溫球閥報(bào)價(jià)，流體從左向右流動(dòng)時(shí)，閥芯被開(kāi)啟，形成通路。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阿克蘇高溫球閥報(bào)價(jià)" src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864802158203/7838338.jpg"></div><p> 卡套外錐面又在壓力下與接頭體內(nèi)錐面密合，因而能夠可靠地防止泄漏。這種連接形式的優(yōu)點(diǎn)是：1、體積小，重量輕，結(jié)構(gòu)簡(jiǎn)單，拆裝容易；2、連接力強(qiáng)，使用范圍廣，可耐高壓（1000公斤/平方厘米）、高溫（650℃）和沖擊振動(dòng)3、可以選用多種材料，適合防腐蝕；4、加工精度要求不高；便于高空安裝?？ㄌ走B接形式，已在中國(guó)某些小口徑閥門(mén)產(chǎn)品中采用。閥門(mén)卡箍連接這是一種快速連接方法，它只需兩個(gè)螺栓，適用于經(jīng)常拆卸的低壓閥門(mén)。閥門(mén)內(nèi)自緊連接以上各種連接形式，都是利用外力來(lái)抵消介質(zhì)壓力，實(shí)現(xiàn)密封的。下面介紹利用介質(zhì)壓力進(jìn)行自緊的連接形式。它的密封圈裝在內(nèi)錐體處，跟介質(zhì)相向的一面成一定角度，介質(zhì)壓力傳給內(nèi)錐體，又傳遞給密封圈，在一定角度的錐面上，產(chǎn)生兩個(gè)分力，一個(gè)與閥體中心線平行向外，另一個(gè)壓向閥體內(nèi)壁。后面這個(gè)分力便是自緊力。介質(zhì)壓力愈大，自緊力也愈大。所以這種連接形式，適合于高壓閥門(mén)。它比法蘭連接，要節(jié)省許多材料和人力，但也需要一定的預(yù)緊力，以便在閥內(nèi)壓力不高時(shí)，使用可靠。利用自緊密封原理做成的閥門(mén)，一般是高壓閥門(mén)。閥門(mén)連接的形式還很多，例如有的不必拆除的小閥門(mén)，跟管子焊接在一起；有的非金屬閥門(mén)，采用承插式連接，等等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阿克蘇高溫球閥報(bào)價(jià)" src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864797988281/9849500.jpg"></div><p> 而介質(zhì)是水平流進(jìn)流出，閥腔內(nèi)流道必然轉(zhuǎn)彎倒拐，使閥的流路變得相當(dāng)復(fù)雜（形狀如倒S型）。這樣，存在許多死區(qū)，為介質(zhì)的沉淀提供了空間，長(zhǎng)此以往，造成堵塞。角行程閥節(jié)流的方向就是水平方向，介質(zhì)水平流進(jìn)，水平流出，容易把不干凈介質(zhì)帶走，同時(shí)流路簡(jiǎn)單，介質(zhì)沉淀的空間也很少，所以角行程閥防堵性能好。為什么角行程類(lèi)閥的切斷壓差較大？角行程類(lèi)閥的切斷壓差較大，是因?yàn)榻橘|(zhì)在閥芯或閥板上產(chǎn)生的合力對(duì)轉(zhuǎn)動(dòng)軸產(chǎn)生的力矩非常小，因此，它能承受較大的壓差。為什么直行程調(diào)節(jié)閥閥桿較細(xì)？它涉及一個(gè)簡(jiǎn)單的機(jī)械原理：滑動(dòng)摩擦大、滾動(dòng)摩擦小。直行程閥的閥桿上下運(yùn)動(dòng)，填料稍壓緊一點(diǎn)，它就會(huì)把閥桿包得很緊，產(chǎn)生較大的回差。為此，閥桿設(shè)計(jì)得非常細(xì)小，填料又常用摩擦系數(shù)小的四氟填料，以便減少回差，但由此派出的問(wèn)題是閥桿細(xì)，則易彎，填料壽命也短。解決這個(gè)問(wèn)題，比較好的辦法就是用旅轉(zhuǎn)閥閥桿，即角行程類(lèi)的調(diào)節(jié)閥，它的閥桿比直行程閥桿粗2～3倍，且選用壽命長(zhǎng)的石墨填料，閥桿剛度好，填料壽命長(zhǎng)，什么是硬密封？切斷閥要求泄漏越低越好，軟密封閥的泄漏是比較低的，切斷效果當(dāng)然好，但不耐磨、可靠性差。從泄漏量又小、密封又可靠的雙重標(biāo)準(zhǔn)來(lái)看。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阿克蘇高溫球閥報(bào)價(jià)" src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864806953125/6397088.jpg"></div></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/29015.html</p></div></div></div></div></div><div id="1wfrt3t" class="page-right twoColRt"><div id="8b47pst" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dqhy3vz" class="recomPic likePro"><a href="http://m.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="c2uurnu" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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