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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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河北焊接電站止回閥多少錢,止回閥</p><p><span>***更新：</span>2020-11-07 07:14:44</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="3xe3cj9" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">浙江京州閥門制造有限公司</a></p><p><span>聯(lián)系人：</span>張和榮</p><p><span>郵箱: </span>maggiez@jcs-valve.com</p><p><span>電話: </span>15888733099</p><p><span>傳真: </span>0577_67351896</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0577-67359296</p><p><span>地址: </span>甌北街道五星工業(yè)區(qū)上玉路</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="a8s7ola" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="srtqk37" class="box"><p><p style="text-indent:25px">旋啟式止回閥適合用在公稱壓力PN1.0MPa~42，河北焊接電站止回閥多少錢.0MPa、Class150-2500；公稱通徑是DN15到1200mm、NPS1/2~48；工作溫度在196到540℃的各種管路上面，常用在防止介質(zhì)的倒流。通過選擇不同的材質(zhì)，可適合水、蒸汽、硝酸、醋酸、油品、強(qiáng)氧化性介質(zhì)及尿素等多種介質(zhì)。旋啟式止回閥的用于裝搖臂的旋啟式結(jié)構(gòu)，閥門的所有的啟閉件可以裝在閥體內(nèi)部，不穿透閥體，除了中法蘭的部位用密封墊片和密封環(huán)外，整體無外漏點(diǎn)，杜絕閥門外泄的可能。旋啟式止回閥搖臂和閥瓣連接處采用球面連接的結(jié)構(gòu)，使得閥瓣在360度范圍內(nèi)有一定的自由度，有適當(dāng)?shù)奈⒘课恢醚a(bǔ)償，河北焊接電站止回閥多少錢。旋啟式止回閥適用于清凈介質(zhì)，河北焊接電站止回閥多少錢，不宜用于含有固體顆粒和粘度較大的介質(zhì)。電站止回閥介質(zhì)倒流的原因有1、密封面破壞；2、夾入雜質(zhì)。河北焊接電站止回閥多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北焊接電站止回閥多少錢,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448559589844/9647506.png"></div><p style="text-indent:25px">止回閥是指啟閉件為圓形閥瓣并靠自身重量及介質(zhì)壓力產(chǎn)生動作來阻斷介質(zhì)倒流的一種閥門。屬自動閥類，又稱逆止閥、單向閥、回流閥或隔離閥。閥瓣運(yùn)動方式分為升降式和旋啟式。升降式止回閥與截止閥結(jié)構(gòu)類似，*缺少帶動閥瓣的閥桿。介質(zhì)從進(jìn)口端(下側(cè)）流入，從出口端（上側(cè)）流出。當(dāng)進(jìn)口壓力大于閥瓣重量及其流動阻力之和時(shí)，閥門被開啟。反之，介質(zhì)倒流時(shí)閥門則關(guān)閉。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。河北焊接電站止回閥多少錢電站止回閥主要可分為旋啟式止回閥(依重心旋轉(zhuǎn))與升降式止回閥(沿軸線移動)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北焊接電站止回閥多少錢,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448519218750/3056674.png"></div><p style="text-indent:25px">止回閥的選型標(biāo)準(zhǔn)內(nèi)容如下：球形止回閥1、為了防止介質(zhì)逆流，在設(shè)備、裝置和管道上都應(yīng)安裝止回閥；2、止回閥一般適用于清凈介質(zhì)，不宜用于含有固體顆粒和粘度較大的介質(zhì)；3、一般在公稱通徑50mm的水平管道上都應(yīng)選用臥式升降止回閥；4、直通式升降止回閥只能在水平管道安裝；5、對于水泵進(jìn)口管路，宜選用底閥，底閥一般只安裝在泵進(jìn)口的垂直管道上，并且介質(zhì)自下而上流動；6、升降式較旋啟式密封性好，流體阻力大，臥式宜裝在水平管道上，立式裝在垂直管道上；7、旋啟式止回閥的安裝位置不受限制，它可裝在水平、垂直或傾斜的管線上，如裝在垂直管道上，介質(zhì)流向要由下而上；8、旋啟式止回閥不宜制成小口徑閥門、可以做成很高的工作壓力，公稱壓力可達(dá)到42MPa，而且公稱通徑也可以做到很大，比較大可以達(dá)到2000mm以上。根據(jù)殼體及密封件的材質(zhì)不同可以適用任何工作介質(zhì)和任何工作溫度范圍。介質(zhì)為水、蒸汽、氣體、腐蝕性介質(zhì)、油品、藥品、等。介質(zhì)工作溫度范圍在-196--800℃之間。</p><p style="text-indent:25px">為了確保止回閥的閥瓣每次都能到達(dá)閥座面的合適位置，閥瓣設(shè)計(jì)在鉸鏈機(jī)構(gòu)，以便閥瓣具有足夠有旋啟空間，并使閥瓣真正的、各方面的與閥座接觸。閥瓣可以全部用金屬制成，也可以在金屬上鑲嵌皮革、橡膠、或者采用合成覆蓋面，這取決于使用性能的要求。旋啟式止回閥在完全打開的狀況，流體壓力幾乎不受阻礙，因此通過閥門的壓力降相對較小。升降式止回閥的閥瓣坐落位于閥體上閥座密封面上。此閥門除了閥瓣可以自由地升降之外，其余部分如同截止閥一樣，流體壓力使閥瓣從閥座密封面上抬起，介質(zhì)回流導(dǎo)致閥瓣回落到閥座上，并切斷流動。根據(jù)使用條件，閥瓣可以是全金屬結(jié)構(gòu)，也可以是在閥瓣架上鑲嵌橡膠墊或橡膠環(huán)的形式。像截止閥一樣，流體通過升降式止回閥的通道也是狹窄的，因此通過升降式止回閥的壓力降比旋啟式止回閥大些，而且旋啟式止回閥的流量受到的限制很少。止回閥屬于自動閥類，主要用于介質(zhì)單向流動的管道上，只允許介質(zhì)向一個(gè)方向流動，以防止發(fā)生事故。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北焊接電站止回閥多少錢,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448540273437/651682.png"></div><p style="text-indent:25px">升降式止回閥:閥瓣沿著閥體垂直中心線滑動的止回閥，內(nèi)螺紋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。蝶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。直通式蝶式止回閥介質(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，其流動阻力較直通式小。升降式止回閥:閥瓣圍繞閥座內(nèi)的銷軸旋轉(zhuǎn)的止回閥。碟式止回閥結(jié)構(gòu)簡單，只能安裝在水平管道上，密封性較好。升降式止回閥:閥瓣沿著閥體中心線滑動的閥門。管道式止回閥是新出現(xiàn)的一種閥門，它的體積小，重量較輕，加工工藝性好，是止回閥發(fā)展方向之一。但流體阻力系數(shù)比旋啟式止回閥略大。焊接高溫高壓止回閥的高溫耐壓部件采用質(zhì)量耐熱合金鋼制造,安全可靠,性能穩(wěn)定,使用壽命長。徐州焊接電站止回閥價(jià)格</p><p style="text-indent:25px">電站止回閥中升降式止回閥可分為立式和臥式兩種。河北焊接電站止回閥多少錢</p><p style="text-indent:25px">對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，如果介質(zhì)流動范疇很大，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，如壓縮機(jī)的出口那樣，則使用升降式止回閥；止回閥應(yīng)確定相應(yīng)的尺寸，閥門供應(yīng)商必須提供選定尺寸的資料數(shù)據(jù)，這樣就能找到給定流速下閥門全開時(shí)的閥門尺寸大??；對于DN50mm以下的高中壓止回閥，宜選用立式升降止回閥和直通式升降止回閥；對于DN50mm以下的低壓止回閥，宜選用蝶式止回閥、立式升降止回閥和隔膜式止回閥；對于DN大于50mm、小于600mm的高中壓止回閥，宜選用旋啟式止回閥；對于DN大于200mm、小于1200mm的中低壓止回閥，宜選用無磨損球形止回閥；對于DN大于50mm、小于2000mm的低壓止回閥，宜選用蝶式止回閥和隔膜式止回閥；對于要求關(guān)閉時(shí)水擊沖擊比較小或無水擊的管路，宜選用緩閉式旋啟止回閥和緩閉式蝶形止回閥。河北焊接電站止回閥多少錢</p><p style="text-indent:25px">浙江京州閥門制造有限公司致力于機(jī)械及行業(yè)設(shè)備，是一家生產(chǎn)型的公司。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下刀閘閥，穿透式刀閘閥，礦漿閥，漿液閥深受客戶的喜愛。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競爭力，努力學(xué)習(xí)行業(yè)知識，遵守行業(yè)規(guī)范，植根于機(jī)械及行業(yè)設(shè)備行業(yè)的發(fā)展。浙江京州閥門秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1886486.html</p></div></div></div></div></div><div id="d7722rt" 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