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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="dhxdbph" class="twoCol"><div id="f73pflr" 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-_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>?青海止回閥生產(chǎn)廠家甘肅誠(chéng)禹惠物資供應(yīng)</p><div id="ptbr9hd" class="leftbox clearfix"><h1>青海止回閥生產(chǎn)廠家甘肅誠(chéng)禹惠物資供應(yīng)</h1><div id="77jrzf9" class="proBig"><div id="rtzxfl5" 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="lffvlzp" 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="ptzxdj5" 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>青海止回閥生產(chǎn)廠家,止回閥</p><p><span>***更新：</span>2021-01-22 09:13:07</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="j9djz7l" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">甘肅誠(chéng)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="njh79rh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="dhfnlzn" class="box"><p><p> <span style="font-size:16px;">止回閥，顧名思義，在系統(tǒng)中阻止流體反向流動(dòng)，是壓縮機(jī)和泵系統(tǒng)常用的閥門。P&IDs顯示了工程師是如何連接設(shè)備和儀器的。不同的壓縮機(jī)和泵有不同的符號(hào)，這可以讓設(shè)計(jì)師決定選用什么元件。P&IDs不顯示管道的位置，為了適應(yīng)具體安裝，各種設(shè)備元件有多種考裝方式，青海止回閥生產(chǎn)廠家。根據(jù)止回閥類型，管道的運(yùn)行位置、走向必須提前決定，青海止回閥生產(chǎn)廠家。渦輪機(jī)不總是與止回閥連接。當(dāng)渦輪機(jī)產(chǎn)生的全部壓力作為管道摩擦損失而消耗時(shí)，具有單個(gè)渦輪機(jī)的系統(tǒng)不要求使用止回閥，因?yàn)闆]有介質(zhì)倒流的可能，青海止回閥生產(chǎn)廠家。這種情況在現(xiàn)實(shí)中很少發(fā)生，因?yàn)榇蟛糠值墓艿老到y(tǒng)中都有一個(gè)高度差的變化，要求渦輪機(jī)將穩(wěn)定的水頭傳遞給帶系統(tǒng)壓力的流體。當(dāng)機(jī)器停止時(shí)，液體就會(huì)回流到系統(tǒng)的比較低點(diǎn)，靜水頭消失。止回閥可以阻止液體回流到抽水泵。</span> 閥瓣在流體壓力和本身重力的作用下自動(dòng)地將通道關(guān)閉，阻止流體逆流。青海止回閥生產(chǎn)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海止回閥生產(chǎn)廠家,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">防止水力沖擊對(duì)止回閥密封面損壞的保護(hù)措施止回閥的設(shè)置，起到了防止物料倒流，避免泵葉輪遭受液擊的作用。但就止回閥本身而言，設(shè)置不當(dāng)，會(huì)造成水擊所產(chǎn)生的閥瓣對(duì)閥座的突然撞擊，損及止回閥密封面。因此，應(yīng)采取以幾點(diǎn)保護(hù)措施。1、對(duì)于泵出口設(shè)置>80mm的旋啟式止回閥，應(yīng)采用水平安裝方式，以減弱閥瓣回座及產(chǎn)生的撞擊。2、對(duì)于泵出口止回閥口徑大于等于150mm的管路，應(yīng)在止回閥前后設(shè)置旁路，防止閥前壓力上升過(guò)高，對(duì)止回閥密封面造成的損害。3、對(duì)泵排出管路起點(diǎn)和終點(diǎn)壓力較高管路，不允許設(shè)置旁路的，可采取以下措施：設(shè)置安全閥以代替旁路閥。其作用與旁路閥相似。它設(shè)置在止回閥出口附近，當(dāng)水擊使壓力升高時(shí)，可將一部分水放出以防止壓力繼續(xù)增高造成的損害。</span> 青海止回閥生產(chǎn)廠家止回閥的安裝位置如何確定呢？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海止回閥生產(chǎn)廠家,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024300068359/4895710.png"></div><p> <span style="font-size:16px;">止回閥的啟閉是依靠介質(zhì)流動(dòng)力量自行開啟和關(guān)閉。止回閥屬于自動(dòng)閥產(chǎn)品，止回閥只允許介質(zhì)向一個(gè)方向流動(dòng)的管路中使用，防止介質(zhì)回流的現(xiàn)象發(fā)生。其使用范圍***，可適用大小口徑、各種介質(zhì)、電站高壓系統(tǒng)中使用。止回閥開啟是指依靠介質(zhì)正向流動(dòng)打開閥瓣，同樣的道理介質(zhì)倒流推動(dòng)閥瓣而關(guān)閉，止回閥還稱之為逆止閥、單向閥、逆流閥和背壓閥。多屬于自動(dòng)閥門，主要功能是用來(lái)防止介質(zhì)倒流，防止泵及驅(qū)動(dòng)電機(jī)反轉(zhuǎn)和容器介質(zhì)的泄放使用。同時(shí)還用于壓力可能升至超過(guò)系統(tǒng)壓的輔助系統(tǒng)中作安全保護(hù)。止回閥主要是用來(lái)防止管道中的介質(zhì)倒流使用。底閥及鴨嘴閥也是屬于止回閥系類。止回閥可分為升降式、旋啟式、碟型三種：⑴升降式又分為立式和臥式2種，升降式結(jié)構(gòu)是沿軸線移動(dòng)。實(shí)例：①升降式靜音止回閥是用在給排水工程質(zhì)量要求高的管線上；同時(shí)可安裝在泵的出口處，要求壓力（）相對(duì)高的管網(wǎng)，是防水沖擊止回閥的重要產(chǎn)品。②升降式消聲止回閥適用于高層</span><span style="font-size:16px;">建筑給排水系統(tǒng)中及泵的出口處，不適合污水管路場(chǎng)合。</span> </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(lái)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，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(lái)進(jìn)行選擇，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="青海止回閥生產(chǎn)廠家,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024327724609/9438807.png"></div><p> <span style="font-size:16px;">有哪些判斷標(biāo)準(zhǔn)來(lái)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(wú)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> 泵前安裝與泵后安裝止回閥有何區(qū)別？青海止回閥生產(chǎn)廠家</p><p style="text-indent:25px">升降式止回閥可分為立式和直通式兩種。青海止回閥生產(chǎn)廠家</p><p> <span style="font-size:16px;">雙閥瓣止回閥設(shè)計(jì)特征傳統(tǒng)的做法是配置鉸鏈銷通過(guò)閥體并且由螺紋塞或法蘭來(lái)提供壓力密封。非固定式設(shè)計(jì)是從閥體一端軸向地安裝所有內(nèi)件，內(nèi)部止動(dòng)件固定鏈銷而不必穿透閥體。套筒式閥將所有的內(nèi)部組件，包括閥座，安裝在閥體內(nèi)的軸向鎖定的一個(gè)套筒內(nèi)。同樣，閥體也不必被穿透而存在潛在泄漏的路徑。備件套筒可以儲(chǔ)存以便在緊急情況下快速修復(fù)。套筒可以在工作臺(tái)上維修和檢查而非現(xiàn)場(chǎng)。所有的設(shè)計(jì)應(yīng)包括一個(gè)固定的彈簧擋板，使每個(gè)閥辦能夠獨(dú)立地彈開和平衡且同步運(yùn)行。通常，閥具有鑄鋼的閥體和套筒和11/13Cr的閥瓣。閥座可以是一體的和硬面的或有軟密封的。閥門口徑為DN50?DN600,壓力可以達(dá)到壓力ANSI150LB?1500LB;閥門口徑小于DN300的，壓力可以做到2500LB。閥門的口徑達(dá)到DN2100和閥門的壓力等級(jí)比較高可達(dá)到ANSI4500LB的也適用。某些金屬對(duì)夾止回閥有一個(gè)襯里。有PFA襯里的不銹鋼閥門被大規(guī)模生產(chǎn)的口徑為DN15?DN100。比較大的壓力是lOObar?，溫度可達(dá)200℃。鑄鐵對(duì)夾閥門，帶有鋁青銅的閥瓣，口徑可從DN50到DN600;壓力為16bar。閥體可用環(huán)氧樹脂來(lái)防止腐蝕。</span> 青海止回閥生產(chǎn)廠家</p><p style="text-indent:25px">甘肅誠(chéng)禹惠物資有限公司致力于機(jī)械及行業(yè)設(shè)備，是一家服務(wù)型的公司。公司業(yè)務(wù)分為誠(chéng)禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造機(jī)械及行業(yè)設(shè)備良好品牌。甘肅誠(chéng)禹惠物資憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來(lái)的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2960664.html</p></div></div></div></div></div><div id="dhxvbp5" class="page-right twoColRt"><div id="h77x9fn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rx9p5tb" 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 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