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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="b8u8gy8" class="twoCol"><div id="kw7yvhj" 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>?海東止回閥費(fèi)用甘肅誠禹惠物資供應(yīng)</p><div id="kzwolxu" class="leftbox clearfix"><h1>海東止回閥費(fèi)用甘肅誠禹惠物資供應(yīng)</h1><div id="furtvxj" class="proBig"><div id="uzbyqxz" 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="etldv83" 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="jsa2nub" 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>海東止回閥費(fèi)用,止回閥</p><p><span>***更新：</span>2021-02-03 02:10:22</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="qph7p2d" 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(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="8vzgnpr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="udaceln" class="box"><p><p> <span style="font-size:16px;">"止回閥"的選型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)；3一般在公稱通經(jīng)50mm的水平管道上都應(yīng)選用立式升降止回閥；4直通式升降止回閥在水平管道和垂直管道上都可安裝；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(dòng)；6升降式旋啟式密封性好，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，PN可達(dá)到42MPa，而且DN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，海東止回閥費(fèi)用、藥品，海東止回閥費(fèi)用、等，海東止回閥費(fèi)用。介質(zhì)工作溫度范圍在-196--800℃之間。</span> 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。海東止回閥費(fèi)用</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海東止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">止回閥過大會(huì)導(dǎo)致流速低，從而無法保持閥門始終打開。這會(huì)導(dǎo)致不穩(wěn)定，閥可能會(huì)顫動(dòng)或顫動(dòng)。反過來，由于頻繁地更換閥門/閥芯，以及由于修理或更換止回閥而導(dǎo)致的其他系統(tǒng)停機(jī)，這會(huì)導(dǎo)致閥門過早的機(jī)械磨損以及可能帶來的額外維護(hù)成本。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）。對于SI單位，Kv是相似的流量系數(shù)：對于水，壓差為1bar時(shí)。</span> 海東止回閥費(fèi)用止回閥在連接形式上可分為螺紋連接、法蘭連接、焊接和對夾式連接四種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海東止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024100673828/8890789.png"></div><p> <span style="font-size:16px;">機(jī)電安裝工程的消聲減振對象包括設(shè)備和管道兩方面，既要防止包括制冷機(jī)組、空調(diào)機(jī)組、水泵、風(fēng)機(jī)等設(shè)備產(chǎn)生較大振動(dòng)和噪聲，也要防止管道傳播設(shè)備及自身產(chǎn)生的振動(dòng)和噪聲。本文從設(shè)施及工藝兩個(gè)方面，總結(jié)了機(jī)電安裝工程在水泵、空調(diào)機(jī)組、排風(fēng)排煙機(jī)組、冷凍機(jī)組、管道各專業(yè)上的常用消聲減震做法，水管道上使用的閥門，一般按下列原則選擇：1、管徑不大于50mm時(shí)，宜采用截止閥，管徑大于50mm時(shí)采用閘閥、蝶閥2、需調(diào)節(jié)流量、水壓時(shí)宜采用調(diào)節(jié)閥、截止閥3、要求水流阻力小的部位（如水泵吸水管上），宜采用閘板閥4、水流需雙向流動(dòng)的管段上應(yīng)采用閘閥、蝶閥，不得使用截止閥。5、安裝空間小的部位宜采用蝶閥、球閥6、在經(jīng)常啟閉的管段上，宜采用截止閥7、口徑較大的水泵出水管上宜采用多功能閥。</span> </p><p> <span style="font-size:16px;">閉止回閥緩閉止回閥是一種通過增加執(zhí)行機(jī)構(gòu)、阻尼器而實(shí)現(xiàn)緩慢關(guān)閉的止回閥。緩閉止回閥需要配合開關(guān)閥使用。當(dāng)介質(zhì)在重力作用下倒流時(shí)，止回閥緩慢關(guān)閉，有效地避免了因普通止回閥突然關(guān)閉產(chǎn)生的水錘。其缺點(diǎn)為因?yàn)殛P(guān)閉速度較慢，一部分介質(zhì)不可避免地倒流進(jìn)入離心泵，泵因此可能會(huì)產(chǎn)生機(jī)械故障。2、設(shè)置緩閉止回蝶閥這是一種在大型水利系統(tǒng)中應(yīng)用比較普遍、效果比較好的方法。緩閉止回蝶閥由蝶閥、執(zhí)行結(jié)構(gòu)及液壓控制系統(tǒng)構(gòu)成。該系統(tǒng)只需安裝緩閉止回蝶閥即可，即能起到止回閥的作用又能起到開關(guān)閥的作用。當(dāng)離心泵開啟的時(shí)候，其按先慢后快的步驟開啟，保證泵低載開啟;當(dāng)泵突然停止工作時(shí)，其按先快后慢的步驟關(guān)閉，即可以避免水錘的產(chǎn)生，又可以避免過多的介質(zhì)倒流通過泵，引起泵的機(jī)械故障。</span> 先裝止回閥后裝閘閥或者蝶閥優(yōu)點(diǎn)：可以保護(hù)止回閥。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海東止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024271513671/7973206.png"></div><p> <span style="font-size:16px;">止回閥啟閉件靠介質(zhì)流動(dòng)和力量自行開啟或關(guān)閉，以防止介質(zhì)倒流的閥門叫止回閥。止回閥用于管路系統(tǒng)，其主要作用是防止介質(zhì)倒流、防止泵及其驅(qū)動(dòng)電機(jī)機(jī)反轉(zhuǎn)，以及容器內(nèi)介質(zhì)的泄放。止回閥還可用于給其中的壓力可能升至超過主系統(tǒng)壓力的輔助系統(tǒng)提供補(bǔ)給的管路上。止回閥根據(jù)材質(zhì)的不同，可以適用于各種介質(zhì)的管路上。止回閥安裝在管路上，即成為這一完整管路的流體部件之一，其閥瓣啟閉過程就要受它所處系統(tǒng)瞬變流動(dòng)狀態(tài)所影響；反過來，閥瓣的關(guān)閉特性又對流體流動(dòng)狀態(tài)產(chǎn)作用對夾雙瓣止回閥又名雙板止回閥，用于純凈管路及工業(yè)、環(huán)保、水處理、高層建筑給排水管路，阻止介質(zhì)逆向流動(dòng)之用。該止回閥采用對夾式，蝶板為兩個(gè)半圓，且采用彈簧強(qiáng)制復(fù)位，密封面可為本體堆焊耐磨材料或襯橡膠，使</span><span style="font-size:16px;">用范圍廣，密封可靠。</span> 受結(jié)構(gòu)限制，不宜用于DN40及以下的管道上;海東止回閥費(fèi)用</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?海東止回閥費(fèi)用</p><p> <span style="font-size:16px;">依靠介質(zhì)本身的流動(dòng)自動(dòng)開，閉閥瓣，介質(zhì)只能單向流動(dòng)，可防介質(zhì)倒流的閥門叫止回閥。止回閥常用的分為兩種類型:升降式止回閥，旋啟式止回閥。裝置壓濾機(jī)濾餅洗滌泵出口止回閥就屬旋啟止回閥，出現(xiàn)過因閥門兩處連接件腐蝕而不能自由開啟，歸位，造成機(jī)泵運(yùn)行出口震動(dòng)大，打不起流量停車檢修。壓濾機(jī)濾餅洗滌泵止回閥故障主要是閥瓣連接件腐蝕、搖臂連接件腐蝕，造成閥瓣直接沖頂出口。通過拆除閥蓋連接螺栓，取出兩處連接螺栓并更換而修復(fù)了止回閥。機(jī)泵出口安裝止回閥主要是防止機(jī)泵停車后介質(zhì)倒流形成水錘對機(jī)泵產(chǎn)生影響。止回閥結(jié)構(gòu)簡單易修理，對于經(jīng)常自動(dòng)啟停的機(jī)泵應(yīng)安裝止回閥，防止葉輪背帽因反轉(zhuǎn)松動(dòng)，造成機(jī)泵運(yùn)行震動(dòng)大，葉輪脫落磨蝕泵殼穿孔，更甚者造成斷軸故障停車。</span> 海東止回閥費(fèi)用</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。甘肅誠禹惠物資擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)。甘肅誠禹惠物資致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(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)注機(jī)械及行業(yè)設(shè)備行業(yè)。滿足市場需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3132106.html</p></div></div></div></div></div><div id="zyasu7p" class="page-right twoColRt"><div id="hwt7gia" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="os7olxe" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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