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class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="38vzqf9" class="twoCol"><div id="xyuj8iu" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-huagong_famenmp/">閥門(mén)</a>?<a href="http://www.cdcfah.com/cp/third-famenmp_fatinw/">閥體</a>?浙江三通回流閥種類(lèi)有哪些貼心服務(wù) 上海大田閥門(mén)管道工程供應(yīng)</p><div id="39ubifj" class="leftbox clearfix"><h1>浙江三通回流閥種類(lèi)有哪些貼心服務(wù) 上海大田閥門(mén)管道工程供應(yīng)</h1><div id="8m7o3y2" class="proBig"><div id="2n4lvxw" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343241264736328/8875293.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="0yn77la" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343241264736328/8875293.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="6j9r3nu" 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>浙江三通回流閥種類(lèi)有哪些,自動(dòng)再循環(huán)閥</p><p><span>***更新：</span>2021-02-06 08:13:18</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="nmjyumt" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海大田閥門(mén)管道工程有限公司</a></p><p><span>聯(lián)系人：</span>余璐辰</p><p><span>郵箱: </span>business@dtjt.com</p><p><span>電話: </span>18621060309</p><p><span>傳真: </span>21_</p><p><span>網(wǎng)址: </span>https://www.dtjt.com</p><p><span>手機(jī): </span>21-68106370</p><p><span>地址: </span>祝橋鎮(zhèn)工業(yè)城</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="znpwipw" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="5ku2lxo" class="box"><p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥是一種依靠介質(zhì)本身的流動(dòng)而自動(dòng)啟閉閥瓣用來(lái)阻止介質(zhì)逆向流動(dòng)的自動(dòng)閥門(mén)。產(chǎn)品連接件少,整體鋼性好.截流速度快、開(kāi)度限位機(jī)構(gòu)方便,靈活,精確。自動(dòng)再循環(huán)閥安裝在管路系統(tǒng)，其主要作用是防止介質(zhì)倒流,自動(dòng)再循環(huán)閥是-種依靠介質(zhì)壓力開(kāi)啟和關(guān)閉的自動(dòng)閥門(mén)。自動(dòng)再循環(huán)閥在水泵供水系統(tǒng)中的作用是防止高壓水回流對(duì)水泵葉輪的沖擊，浙江三通回流閥種類(lèi)有哪些。系統(tǒng)在運(yùn)行中由于某種原因,水泵突然停止運(yùn)轉(zhuǎn)時(shí)，浙江三通回流閥種類(lèi)有哪些，浙江三通回流閥種類(lèi)有哪些,泵內(nèi)壓力消失,與水泵出口相連的高壓水就會(huì)反向流回水泵。自動(dòng)再循環(huán)閥可將閥前管路較高的水壓減少至閥后管路所需的水平.浙江三通回流閥種類(lèi)有哪些</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江三通回流閥種類(lèi)有哪些,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343241264736328/8875293.png"></div><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥的結(jié)構(gòu)長(zhǎng)度和總體高度較小，開(kāi)啟和關(guān)閉速度較快，且具有良好的流體控制特性。自動(dòng)再循環(huán)閥的結(jié)構(gòu)原理適合于制作大口徑閥門(mén)。當(dāng)要求自動(dòng)再循環(huán)閥作控制流量使用時(shí)，重要的是正確選擇自動(dòng)再循環(huán)閥的規(guī)格和類(lèi)型，使之能恰當(dāng)?shù)?、有效地工作。通常，在?jié)流、調(diào)節(jié)控制與泥漿介質(zhì)中，要求結(jié)構(gòu)長(zhǎng)度短、啟閉速度快、低壓截止(壓差小)，推薦選用自動(dòng)再循環(huán)閥。在雙位調(diào)節(jié)、縮徑的通道、低噪聲、有氣穴和汽化現(xiàn)象、向大氣少量滲漏、具有磨蝕性介質(zhì)時(shí)，可選用自動(dòng)再循環(huán)閥。在特殊工況條件下節(jié)流調(diào)節(jié)，或要求密封嚴(yán)格、磨損嚴(yán)重、低溫(深冷)等工況條件下。三通回流閥制造商哪家好自動(dòng)再循環(huán)閥在低壓下，可以實(shí)現(xiàn)良好的密封.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江三通回流閥種類(lèi)有哪些,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343241974296875/6282454.png"></div><p style="text-indent:25px"> 常用的自動(dòng)再循環(huán)閥有對(duì)夾式自動(dòng)再循環(huán)閥和法蘭式自動(dòng)再循環(huán)閥兩種。對(duì)夾式自動(dòng)再循環(huán)閥是用雙頭螺栓將閥門(mén)銜接在兩管道法蘭之間，法蘭式自動(dòng)再循環(huán)閥是閥門(mén)上帶有法蘭，用螺栓將閥門(mén)上兩頭法蘭銜接在管道法蘭上。自動(dòng)再循環(huán)閥的結(jié)構(gòu)和在使用過(guò)程存在的問(wèn)題：目前，自動(dòng)再循環(huán)閥作為一種用來(lái)實(shí)現(xiàn)管路系統(tǒng)通斷及流量控制的部件，已在石油、化工、冶金、水電等許多領(lǐng)域中得到極為普遍地使用。在已公知的自動(dòng)再循環(huán)閥技術(shù)中，其密封形式多采用密封結(jié)構(gòu)，密封材料為橡膠、聚四氟乙烯等。因?yàn)榻Y(jié)構(gòu)特征的限制，不適應(yīng)耐高溫、高壓及耐腐蝕、抗磨損等職業(yè)。</p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥是給水泵的重要設(shè)備，與125、200、300、600MW機(jī)組鍋爐給水泵配套使用。在電廠運(yùn)行過(guò)程中，給水泵將鍋爐給水經(jīng)除氧器加壓后送往高壓加熱器，進(jìn)入鍋爐。當(dāng)給水流量由于機(jī)組運(yùn)行工況所限低于某一小值時(shí)，將導(dǎo)致給水泵內(nèi)介質(zhì)汽化而使設(shè)備無(wú)法工作甚至損壞。自動(dòng)再循環(huán)閥就是當(dāng)給水流量減小流量（給水泵的流量在任何工況下都不得小于這一規(guī)定的安全流量值）時(shí)，立即打開(kāi)，介質(zhì)經(jīng)控制閥回到除氧器，保證給水泵的安全運(yùn)行；當(dāng)給水流量達(dá)到一定量時(shí)，小流量控制閥關(guān)閉，系統(tǒng)進(jìn)入正常工作。運(yùn)行時(shí)給水泵出口壓力很高，而除氧器壓力很低（0.8MPa以下），所以，自動(dòng)再循環(huán)閥須承受很高的壓差。自動(dòng)再循環(huán)閥的工作壽命是非常長(zhǎng)久的.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江三通回流閥種類(lèi)有哪些,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343241537685546/5558241.png"></div><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥又稱(chēng)自動(dòng)再循環(huán)閥或小流量閥，用于離心泵小流量的自動(dòng)再循環(huán)，防止離心泵在低負(fù)載下由于過(guò)熱，噪音、振動(dòng)帶來(lái)的損壞。自動(dòng)再循環(huán)閥為自力式控制閥，不需要外部供給能源。與傳統(tǒng)的控制閥系統(tǒng)相比，具有以下明顯優(yōu)勢(shì)：在前期產(chǎn)品采購(gòu)、安裝調(diào)試，以及后期的維護(hù)方面，具有明顯的成本優(yōu)勢(shì)，總體費(fèi)用比傳統(tǒng)控制閥系統(tǒng)低2/3旁路流量可調(diào)節(jié)控制，閥門(mén)整體運(yùn)行具有高經(jīng)濟(jì)性完全機(jī)械結(jié)構(gòu)，依靠流量控制閥門(mén)，不需要額外的能源。實(shí)現(xiàn)泵的保護(hù)只只只需一個(gè)閥，不需其他額外組件。因此不受系統(tǒng)故障影響。自動(dòng)再循環(huán)閥是一種自力式的三通式閥門(mén)，安裝于泵出口。上海再循環(huán)閥批發(fā)哪家好</p><p style="text-indent:25px">自動(dòng)再循環(huán)閥的選用歸于電動(dòng)閥門(mén)和電動(dòng)調(diào)節(jié)閥中的一個(gè)種類(lèi).浙江三通回流閥種類(lèi)有哪些</p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥用于防止給水泵的低負(fù)荷運(yùn)行時(shí)由于過(guò)熱、嚴(yán)重噪音，不穩(wěn)定汽蝕引起損壞。只要泵的流量低到一定數(shù)值，閥的輔助回流口就會(huì)自動(dòng)地打開(kāi)。當(dāng)自動(dòng)再循環(huán)閥的開(kāi)度在10％以上時(shí)，自動(dòng)再循環(huán)閥的軸向力，即自動(dòng)再循環(huán)閥的操縱力矩變化不大。當(dāng)自動(dòng)再循環(huán)閥的開(kāi)度低于10％時(shí)，因?yàn)榱黧w的節(jié)流，使自動(dòng)再循環(huán)閥的前后壓差增大。這個(gè)壓差作用在閘板上，使閥桿需要較大的軸向力才能帶動(dòng)閘板，所以在此范圍內(nèi)，自動(dòng)再循環(huán)閥的操縱力矩變化比較大。彈性閘板的自動(dòng)再循環(huán)閥，在接近封閉時(shí)所需的操縱力矩比剛性閘板的要大些。浙江三通回流閥種類(lèi)有哪些</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3191433.html</p></div></div></div></div></div><div id="1edfrda" class="page-right twoColRt"><div id="q23ynj2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="wac3ipw" 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" 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