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class="home-main container clearfix"><div id="ujvscmt" class="twoCol"><div id="cw2t7hx" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_qitafamenbd/">其他閥門</a>?平?jīng)鲋够亻y批發(fā) 甘肅誠禹惠物資供應(yīng)</p><div id="tnc7m3a" class="leftbox clearfix"><h1>平?jīng)鲋够亻y批發(fā) 甘肅誠禹惠物資供應(yīng)</h1><div id="aug8hoa" class="proBig"><div id="eo7ku33" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lj87r2b" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="crgxpt7" 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>甘肅省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>平?jīng)鲋够亻y批發(fā),止回閥</p><p><span>***更新：</span>2021-01-14 01:15:18</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="mg83woq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">甘肅誠禹惠物資有限公司</a></p><p><span>聯(lián)系人：</span>楊和平</p><p><span>郵箱: </span>349134533@qq.com</p><p><span>電話: </span>18294448288</p><p><span>傳真: </span>0931_</p><p><span>網(wǎng)址: </span>http://www.gscyhwz.com</p><p><span>手機(jī): </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(hào)(立達(dá)建材城A區(qū)11棟104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="2urovxz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="2tlikmt" class="box"><p><p> <span style="font-size:16px;">適用場(chǎng)合是低壓大口徑，而且安裝場(chǎng)合受到限制；蝶式止回閥的安裝位置不受限制，可以安裝在水平管路上，也可以安裝在垂直或傾斜的管線上；隔膜式止回閥適用于易產(chǎn)生水擊的管路上，隔膜可以很好地消除介質(zhì)逆流時(shí)產(chǎn)生的水擊，它一般使用在低壓常溫管道上，特別適用于自來水管道上，一般介質(zhì)工作溫度在-12--120℃之間，工作壓力<，但隔膜式止回閥可以做到較大口徑，DN比較大可以達(dá)到2000mm以上；球形止回閥適用于中低壓管路，可以制成大口徑；球形止回閥的殼體材料可以用不銹鋼制作，密封件的空心球體可以包裹聚四氟乙烯工程塑料，所以在一般腐蝕性介質(zhì)的管路上也可應(yīng)用，工作溫度在-101--150℃之間，其公稱壓力≤，公稱通經(jīng)范圍在200—1200之間；對(duì)于不可壓縮性流體用止回閥選擇時(shí)首先要對(duì)所需要的關(guān)閉速度進(jìn)行評(píng)估，平?jīng)鲋够亻y批發(fā)，平?jīng)鲋够亻y批發(fā)，第二步是選擇可能滿足所需要的關(guān)閉速度的止回閥的類型；對(duì)于可壓縮性流體用止回閥選擇時(shí)可以根據(jù)不可壓縮性流體用止回閥的類似方法來進(jìn)行選擇，平?jīng)鲋够亻y批發(fā)，如果介質(zhì)流動(dòng)范疇很大，則用于可壓縮性流體的止回閥可使用一減速裝置，如果介質(zhì)流連續(xù)不段地快速停止和啟動(dòng)，如壓縮機(jī)的出口那樣，則使用升降式止回閥。</span> 止回閥與其他出口控制閥的安裝順序有什么關(guān)系？平?jīng)鲋够亻y批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="平?jīng)鲋够亻y批發(fā),止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">止回閥又叫逆止閥，是一種自動(dòng)閥門，它依靠管道內(nèi)流動(dòng)介質(zhì)的壓力推動(dòng)閥瓣，來實(shí)現(xiàn)閥門的關(guān)閉和開啟，當(dāng)介質(zhì)停止流動(dòng)，止回閥閥瓣關(guān)閉，它能有效防止管道內(nèi)介質(zhì)發(fā)生倒流，這對(duì)于保障管道的安全起到了很大的作用。一種是安裝在水泵前豎吸管端頭，也叫底閥。目的是為了不用抽一次水向水泵充一次水，因?yàn)樗脙?nèi)以及泵前的吸管內(nèi)無水時(shí)水泵只能空轉(zhuǎn)抽不上水，所以水泵內(nèi)必須充滿水才能抽出水。這種水泵的安裝是高于液面時(shí)的一種方法，也叫負(fù)壓法。另一種是安裝在水泵的后方。這種安裝方法是液面高于水泵的情況下，方便啟停水泵時(shí)不用關(guān)水泵出水閥，特別是對(duì)于母管制水泵系統(tǒng)，防止發(fā)生倒流的情況。止回閥必須安裝在泵的出口、出口控制閥之前的位置，以便檢修止回閥。一般泵的出口道是</span><span style="font-size:16px;">軟連接（減震器），接下來是止回閥，再接下來是隔斷閥。</span> 定西止回閥廠家供應(yīng)止回閥必須安裝在泵的出口、出口控制閥之前的位置，以便檢修止回閥。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="平?jīng)鲋够亻y批發(fā),止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024172031250/1230386.png"></div><p> <span style="font-size:16px;">有哪些判斷標(biāo)準(zhǔn)來選擇適合的止回閥1、止回閥被大量運(yùn)用主要是為了阻止流質(zhì)的逆向流動(dòng)。在一些特定的設(shè)備和管道上如果需要流質(zhì)單向的流動(dòng)則應(yīng)該加裝止回閥；2、止回閥的適用范圍一般都是比較干凈清潔的流體，不適用于粘度大以及含有固體顆粒和污水的流體系統(tǒng)當(dāng)中；3、立式升降止回閥一般都用于管徑在5cm左右的水平管道上；4、相對(duì)于立式升降止回閥而言直通式升降止回閥不僅可以運(yùn)用于水平管道上，在垂直管道中也得到了大量的運(yùn)用；底閥在大多數(shù)情況下都是用于泵進(jìn)口的垂直管道上的，所以如果是水泵的進(jìn)口管路一般都用底閥，并且通常情況而言流體都是從下往上流動(dòng)的情況；6、對(duì)于升降式旋轉(zhuǎn)止回閥而言它擁有良好的密封性，這是其他止回閥無法比擬的，但是它的運(yùn)用范圍要小很多，一般臥式的都安裝在水</span><span style="font-size:16px;">平管道上，而立式的則多用于垂直管道。</span> </p><p> <span style="font-size:16px;">止回閥尺寸過小會(huì)導(dǎo)致通過該閥的流量過高，從而導(dǎo)致系統(tǒng)中不必要的高壓力損失。它還可能在流中產(chǎn)生過度的湍流，這可能導(dǎo)致閥不穩(wěn)定并增加機(jī)械磨損，從而導(dǎo)致更高的維護(hù)成本。同樣，通過尺寸過小的閥門的較高流速可能會(huì)增加閥門內(nèi)部的腐蝕磨損。閥門的流量系數(shù)Cv用于計(jì)算壓力損失。對(duì)于水，Cv是壓差為1psi（lb/平方英寸）時(shí)的流量，單位為gpm（gal/min）。對(duì)于SI單位，Kv是相似的流量系數(shù)：對(duì)于水，壓差為1bar時(shí)，立方米/小時(shí)對(duì)于給定的流量，較高的Cv意味著較低的壓力損失。在其他類型的閥門中，通常需要更高的Cv。止回閥則不是，這需要不同的方法。對(duì)于止回閥，關(guān)鍵因素是要有足夠的流量以使閥在正常系統(tǒng)流量下保持打開狀態(tài)。尺寸合適時(shí)，它們需要相應(yīng)的壓降才能有效運(yùn)行。Bregman說，在單向閥選擇過程中，“您需要知道將閥保持在全開位置所需的小流速或壓力降。”應(yīng)用注意事項(xiàng)由于上游的泵，彎頭或其他流量干擾，即使是尺寸合適的止回閥在處理湍流時(shí)也可能會(huì)不穩(wěn)定。優(yōu)良作法是在閥的上游留出一定長度的直管，以使湍流消散（如果有空間的話）。通常，長度為10D就足夠了。</span> 對(duì)于壓力或流量不穩(wěn)定或脈動(dòng)介質(zhì)工況，且閥門直徑DN≥200時(shí)，宜采用Tilting旋啟式止回閥。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="平?jīng)鲋够亻y批發(fā),止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024300068359/4895710.png"></div><p> <span style="font-size:16px;">止回閥啟閉動(dòng)作較為頻繁，內(nèi)部連接部分及密封部件容易發(fā)生損壞，為便于修理，防止發(fā)生由于止回閥故障而停運(yùn)整個(gè)系統(tǒng)的情況，從這個(gè)角度考慮，止回閥會(huì)裝在出口閘閥或蝶閥之前，止回閥有多種樣式，它們使用不同的機(jī)制來阻止倒流，包括盤，球，活塞和其他形式。流量可以是直通，成角度或舉升形式。每種類型的止回閥都有其優(yōu)勢(shì)。旋啟式止回閥可允許使用通過管道的清管器清潔或檢查管道。其他人在垂直流方面表現(xiàn)比較好。有些可以在線維修。某些含有固體或纖維材料的可耐受流動(dòng)。配件可以微調(diào)閥門的性能。杠桿和配重，彈簧，氣墊或減震器的各種組合可幫助控制閥門的關(guān)閉速度以匹配應(yīng)用，并防止閥門猛擊和水錘問題。其他附件，例如位置指示器，提供操作信息。Bregman說，在許多應(yīng)用中，比較好包括一個(gè)</span><span style="font-size:16px;">反</span><span style="font-size:16px;">沖洗裝置，以***積聚在閥門底部的任何碎屑。</span> 止回閥的安裝位置如何確定呢？武山止回閥銷售電話</p><p style="text-indent:25px">盡可能水平安裝，用于垂直管道上時(shí)，應(yīng)保證介質(zhì)流向?yàn)樽韵露?。平?jīng)鲋够亻y批發(fā)</p><p> <span style="font-size:16px;">升降式止回閥：閥瓣沿著閥體垂直中心線滑動(dòng)的止回閥，升降式止回閥只能安裝在水平管道上，在高壓小口徑止回閥上閥瓣可采用圓球。升降式止回閥的閥體形狀與截止閥一樣（可與截止閥通用），因此它的流體阻力系數(shù)較大。其結(jié)構(gòu)與截止閥相似，閥體和閥瓣與截止閥相同。閥瓣上部和閥蓋下部加工有導(dǎo)向套簡，閥瓣導(dǎo)向簡可在閥盞導(dǎo)向簡內(nèi)自由升降，當(dāng)介質(zhì)順流時(shí)，閥瓣靠介質(zhì)推力開啟，當(dāng)介質(zhì)停流時(shí)，閥瓣靠自垂降落在閥座上，起阻止介質(zhì)逆流作用。直通式升降止回閥介質(zhì)進(jìn)出口通道方向與閥座通道方向垂直；立式升降式止回閥，其介質(zhì)進(jìn)出口通道方向與閥座通道方向相同，其流動(dòng)阻力較直通式小。旋啟式止回閥有一個(gè)斜置并能繞軸旋轉(zhuǎn)的閥瓣，工作原理與升降式止回閥相似。止回閥常用作抽水裝置的底閥，可以阻止</span><span style="font-size:16px;">水的回流。止回閥與截止閥組合使用，可起到安全隔離的作用。缺點(diǎn)是阻力大，關(guān)閉時(shí)密封性差。</span> 平?jīng)鲋够亻y批發(fā)</p><p style="text-indent:25px">甘肅誠禹惠物資有限公司是一家閥門及配件、水泵、水暖器材、五金交電、機(jī)械設(shè)備、建筑材料、管道管材管件、電子產(chǎn)品（不含衛(wèi)星地面接收設(shè)施）、塑料制品、辦公用品、勞保用品、金屬制品及材料、消防器材、五金工具、成套設(shè)備、電線電纜、冶金機(jī)械、石化機(jī)械、家用電器、機(jī)械設(shè)備、機(jī)電設(shè)備及配件、保溫材料、裝潢材料、玻璃儀器、燈具、化工產(chǎn)品（不含危險(xiǎn)化學(xué)品、易制毒化學(xué)品、監(jiān)控化學(xué)品）的批發(fā)、零售的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)，是機(jī)械及行業(yè)設(shè)備的主力軍。甘肅誠禹惠物資致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來良好體驗(yàn)。甘肅誠禹惠物資始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使甘肅誠禹惠物資在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2833392.html</p></div></div></div></div></div><div id="u39egd8" class="page-right twoColRt"><div id="lfjvnur" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="a30fxub" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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