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id="7dueqpg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024327724609/9438807.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="4l89jls" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024327724609/9438807.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="d7vrjde" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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)品關鍵詞：</span>海北州止回閥價格,止回閥</p><p><span>***更新：</span>2020-10-22 15:34:51</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="b7bd3tl" 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: </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(立達建材城A區(qū)11棟104室)</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="2a4q9ur" class="page-proshow02"><p class="title">詳細說明</p><div id="ch8ospr" class="box"><p><p> <span style="font-size:16px;">水錘是在突然停電或者在閥門關閉太快時,由于壓力水流的慣性,產(chǎn)生水流沖擊波,就象錘子敲打一樣,所以叫水錘。泵站水錘有啟動水錘、關閥水錘和停泵水錘（由于突然停電等原因形成的）。前兩種水錘在正常操作程序下，海北州止回閥價格，不會引起危及機組安全的問題。后者形成的水錘壓力值往往很大，從而釀成事故。所謂停泵水錘是指突然斷電或其他原因造成開閥停車時，在水泵和壓力管道中由于流速的突然變化而引起壓力升降的水力沖擊現(xiàn)象。例如電力系統(tǒng)或電器設備發(fā)生故障、水泵機組偶發(fā)故障等原因，都可能發(fā)生離心泵開閥停車，從而引發(fā)停泵水錘。停泵水錘的比較高壓力可達正常工作壓力的200%，甚至更高可以使管道及設備擊毀，一般事故造成“跑水”、停水；嚴重事故造成泵房被淹，海北州止回閥價格、設備損壞，海北州止回閥價格、設施被毀，甚至于造成人身傷亡事</span><span style="font-size:16px;">故。</span> 常在閥的通道隔板上設置多個閥瓣，成為多瓣式;海北州止回閥價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州止回閥價格,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024327724609/9438807.png"></div><p> <span style="font-size:16px;">倒流防止器的原理作用：防止水倒流.但無防污性能,當止回密封面失效，不能有效防止水的回流污染。設有倒流防止器的管段,不需要再設止回閥；反之不能替代。1、正向通水進口壓力大于出口壓力時，兩個止回閥瓣開啟，排水器關閉。在2m/s流速時，流通水損小于。2、反向關閉進口壓力小于等于出口壓力時，兩個止回閥瓣關閉，排水器開啟。如果沒有垃圾卡阻，兩個止回閥瓣密封關閉，排水器出口不排水，中間腔與大氣相通，中間腔壓力為零。3、防止回流污染進口壓力小于出口壓力時，兩個止回閥瓣處于關閉狀態(tài)，排水器處于開啟狀態(tài)如果其中一個或兩個止回閥瓣的閥口有垃圾卡阻，產(chǎn)生滲漏，所漏介質均流向中間腔，經(jīng)過排水器直接排出閥外，防止對進口端的回流污染。</span> 海北州止回閥價格旋啟式止回閥。旋啟式止回閥對流體的阻力較小。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州止回閥價格,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024241562500/2823839.png"></div><p> <span style="font-size:16px;">止回閥的啟閉是依靠介質流動力量自行開啟和關閉。止回閥屬于自動閥產(chǎn)品，止回閥只允許介質向一個方向流動的管路中使用，防止介質回流的現(xiàn)象發(fā)生。其使用范圍***，可適用大小口徑、各種介質、電站高壓系統(tǒng)中使用。止回閥開啟是指依靠介質正向流動打開閥瓣，同樣的道理介質倒流推動閥瓣而關閉，止回閥還稱之為逆止閥、單向閥、逆流閥和背壓閥。多屬于自動閥門，主要功能是用來防止介質倒流，防止泵及驅動電機反轉和容器介質的泄放使用。同時還用于壓力可能升至超過系統(tǒng)壓的輔助系統(tǒng)中作安全保護。止回閥主要是用來防止管道中的介質倒流使用。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，升降式結構是沿軸線移動。實例：①升降式靜音止回閥是用在給排水工程質量要求高的管線上；同時可安裝在泵的出口處，要求壓力（）相對高的管網(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，不適合污水管路場合。</span> </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，是壓縮機和泵系統(tǒng)常用的閥門。P&IDs顯示了工程師是如何連接設備和儀器的。不同的壓縮機和泵有不同的符號，這可以讓設計師決定選用什么元件。P&IDs不顯示管道的位置，為了適應具體安裝，各種設備元件有多種考裝方式。根據(jù)止回閥類型，管道的運行位置、走向必須提前決定。渦輪機不總是與止回閥連接。當渦輪機產(chǎn)生的全部壓力作為管道摩擦損失而消耗時，具有單個渦輪機的系統(tǒng)不要求使用止回閥，因為沒有介質倒流的可能。這種情況在現(xiàn)實中很少發(fā)生，因為大部分的管道系統(tǒng)中都有一個高度差的變化，要求渦輪機將穩(wěn)定的水頭傳遞給帶系統(tǒng)壓力的流體。當機器停止時，液體就會回流到系統(tǒng)的比較低點，靜水頭消失。止回閥可以阻止液體回流到抽水泵。</span> 止回閥是化工企業(yè)常見的用來防止物料倒流的一道保護措施。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州止回閥價格,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">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；11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逆流時產(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比較大可以達到2000mm以上；球形止回閥適用于中低壓管路，可以制成大口徑；13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的管路上也可應用，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；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的管路上也可應用，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。</span> 折形流道，不宜用于壓力脈動工況條件;不宜用于高壓氧氣介質工況條件;不能用于有通球要求的工況條件。海北州止回閥價格</p><p style="text-indent:25px">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。海北州止回閥價格</p><p> <span style="font-size:16px;">止回閥是指依靠介質本身流動而自動開、閉閥瓣，用來防止介質倒流的閥門，又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動閥門，其主要作用是防止介質倒流、防止泵及驅動電動機反轉，以及容器介質的泄放止回閥根據(jù)其結構和安裝方式主要分為：升降式止回閥、旋啟式止回閥、蝶式止回閥、管道式止回閥和壓緊式止回閥。作為配管專業(yè)當然就是要考慮止回閥的安裝方式</span><span style="font-size:16px;">了。止回閥的安裝要求：1.升降式止回閥，閥瓣是沿著閥體垂直中心線滑動的止回閥，閥門型號是H41——，升降式止回閥只能安裝在水平管道上。2.旋啟式止回閥，閥瓣是圍繞閥座外的銷軸旋轉的止回閥，閥門型號是H44——，水平和垂直管道都可以，只是安裝方向有要求。不過比較好還是水平安裝，當然對于介質流動方向為從下到上的，也可以垂直安裝。3.碟式止回閥，閥瓣圍繞閥座內的銷軸旋轉，閥門型號是H45——，碟式止只能安裝在水平管道上。4.管道式止回閥，它的閥瓣是沿著閥體中心線滑動的閥門，水平和垂直方向都可以，但是也是需要注意安裝方向的。5.壓緊式止回閥：一般是鍋爐給水和蒸汽切斷用閥，它具有升降式止回閥和截止閥或角閥的綜合機能，也是需要水平安裝。</span> 海北州止回閥價格</p><p style="text-indent:25px">甘肅誠禹惠物資有限公司是一家服務型類企業(yè)，積極探索行業(yè)發(fā)展，努力實現(xiàn)產(chǎn)品創(chuàng)新。公司是一家有限責任公司企業(yè)，以誠信務實的創(chuàng)業(yè)精神、專業(yè)的管理團隊、踏實的職工隊伍，努力為廣大用戶提供高品質的產(chǎn)品。公司始終堅持客戶需求優(yōu)先的原則，致力于提供高質量的誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)。甘肅誠禹惠物資以創(chuàng)造高品質產(chǎn)品及服務的理念，打造高指標的服務，引導行業(yè)的發(fā)展。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1663271.html</p></div></div></div></div></div><div id="mqn9ryq" 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