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id="3vyjfq3" 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>高臺(tái)止回閥銷售電話,止回閥</p><p><span>***更新：</span>2021-01-24 14:17:22</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="w3c3cnt" 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="fy8tjfg" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="m8xyz3o" class="box"><p><p> <span style="font-size:16px;">水錘是在突然停電或者在閥門關(guān)閉太快時(shí),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(dòng)水錘、關(guān)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，不會(huì)引起危及機(jī)組安全的問(wèn)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(shí)，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(shè)備發(fā)生故障、水泵機(jī)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(dá)正常工作壓力的200%，甚至更高可以使管道及設(shè)備擊毀，高臺(tái)止回閥銷售電話，一般事故造成“跑水”，高臺(tái)止回閥銷售電話，高臺(tái)止回閥銷售電話、停水；嚴(yán)重事故造成泵房被淹、設(shè)備損壞、設(shè)施被毀，甚至于造成人身傷亡事</span><span style="font-size:16px;">故。</span> 止回閥是指啟閉件靠介質(zhì)流動(dòng)和力量自行開啟或關(guān)閉。高臺(tái)止回閥銷售電話</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高臺(tái)止回閥銷售電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024271513671/7973206.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(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；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(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；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。</span> 高臺(tái)止回閥銷售電話升降式止回閥。升降式止回閥的閥體多與截止閥閥體相似。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高臺(tái)止回閥銷售電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024352636718/6696423.png"></div><p> <span style="font-size:16px;">旋啟式止回閥又稱單向閥或逆止閥，其作用是防止管路中的介質(zhì)倒流。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。止回閥屬于自動(dòng)閥類，主要用于介質(zhì)單向流動(dòng)的管道上，只允許介質(zhì)向一個(gè)方向流動(dòng)，以防止發(fā)生事故。本類閥門在管道中一般應(yīng)當(dāng)水平安裝。旋啟式止回閥適用于公稱壓力、Class150-2500；公稱通徑DN15~1200mm、NPS1/2~48；工作溫度－196~540℃的各種管路上，用于防止介質(zhì)倒流。通過(guò)選用不同的材質(zhì)(WCB,CF8(M),CF3(M),1Gr5Mo,15CrMo1V，可適用于水、蒸汽、油品、硝酸、醋酸、強(qiáng)氧化性介質(zhì)及尿素等多種介質(zhì)。主要用于石油、化工、制藥、化肥、電力等管路上。旋啟式止回閥的采用內(nèi)裝搖臂旋啟式結(jié)構(gòu)，閥門的所有啟閉件都裝于閥體內(nèi)部，不穿透閥體，除了中法蘭部位用密封墊片和密封環(huán)外，整體沒(méi)有外漏點(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</span><span style="font-size:16px;">的自由度，有適當(dāng)?shù)奈⒘课恢醚a(bǔ)償。適用于清凈介質(zhì)。</span> </p><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(lái)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(wú)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(lái)是止回閥，再接下來(lái)是隔斷閥。</span> 受工作原理的影響，只能安裝在水平管道上;</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高臺(tái)止回閥銷售電話,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024172031250/1230386.png"></div><p> <span style="font-size:16px;">離心泵出口的止回閥的作用就是防止出口管路中的液體倒流形成水錘造成泵內(nèi)葉輪損傷。止回閥的安裝與泵的多少無(wú)關(guān),止回閥主要為了在泵停止運(yùn)行后，防止液體回流，使泵倒轉(zhuǎn),從而造成損壞泵的事故。泵出口止回閥的安裝1、旋啟式止回閥一般安裝在水平管道上：對(duì)于口徑DN<80mm的止回閥，也可安裝在垂直或向上傾斜的管道上。2、直通式升降式止回閥應(yīng)安裝在水平管道上;立式升降式止回閥必須安裝在垂直管道上，介質(zhì)為自下而上流動(dòng)。3、由于止回閥容易損壞，因此，應(yīng)靠近泵出口安裝止回閥，在止回閥上部設(shè)有切斷閥(一般用球閥</span><span style="font-size:16px;">或閘閥)，方便檢修。4、為便于止回閥拆卸前泄壓，對(duì)于止回閥本身不帶放凈閥的，應(yīng)在止回閥與切斷閥之間加裝泄壓用放凈閥。</span> 升降式止回閥為高壓小口徑，常采用圓球形閥瓣。高臺(tái)止回閥銷售電話</p><p style="text-indent:25px">止回閥的特點(diǎn)是啟閉件靠介質(zhì)流動(dòng)的力量自行開啟或關(guān)閉。高臺(tái)止回閥銷售電話</p><p> <span style="font-size:16px;">閉止回閥緩閉止回閥是一種通過(guò)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(guò)多的介質(zhì)倒流通過(guò)泵，引起泵的機(jī)械故障。</span> 高臺(tái)止回閥銷售電話</p><p style="text-indent:25px">甘肅誠(chéng)禹惠物資有限公司位于北濱河西路1226之27號(hào)(立達(dá)建材城A區(qū)11棟104室)。甘肅誠(chéng)禹惠物資致力于為客戶提供良好的誠(chéng)禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事機(jī)械及行業(yè)設(shè)備多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批獨(dú)立的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。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/2991761.html</p></div></div></div></div></div><div id="e8bxo2p" class="page-right twoColRt"><div id="83vbcio" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8rcyjaw" 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) 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