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clearfix"><h1>大同閥門創(chuàng)造輝煌江蘇蘭閥通用設(shè)備供應(yīng)</h1><div id="7n87bmj" class="proBig"><div id="8lkyyuk" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829327022075/8070471.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xfkuozz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829327022075/8070471.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yrx8vbm" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>大同閥門,閥門</p><p><span>***更新：</span>2021-01-11 01:14:35</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dl89agf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇蘭閥通用設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>金</p><p><span>郵箱: </span>81768246@qq.com</p><p><span>電話: </span>13915001988</p><p><span>傳真: </span>0519_</p><p><span>網(wǎng)址: </span>http://www.lanfa.cn</p><p><span>手機: </span>0519-88610258</p><p><span>地址: </span>橫山橋鎮(zhèn)省莊村</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="mekvvgg" class="page-proshow02"><p class="title">詳細說明</p><div id="b84h3m7" class="box"><p><p style="text-indent:25px">閥門分類：按作用和用途分類：(1)截斷閥：截斷閥又稱閉路閥，其作用是接通或截斷管路中的介質(zhì)。截斷閥類包括閘閥、截止閥、旋塞閥、球閥、蝶閥和隔膜等，大同閥門。(2) 止回閥：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。水泵吸水關(guān)的底閥也屬于止回閥類。(3) 安全閥：安全閥類的作用是防止管路或裝置中的介質(zhì)壓力超過規(guī)定數(shù)值，從而達到安全保護的目的。(4) 調(diào)節(jié)閥：調(diào)節(jié)閥類包括調(diào)節(jié)閥、節(jié)流閥和減壓閥，其作用是調(diào)節(jié)介質(zhì)的壓力、流量等參數(shù)。(5) 分流閥：分流閥類包括各種分配閥和疏水閥等，其作用是分配、分離或混合管路中的介質(zhì)。(6)排氣閥：排氣閥是管道系統(tǒng)中必不可少的輔助元件，大同閥門，普遍應(yīng)用于鍋爐、空調(diào)，大同閥門、石油天然氣、給排水管道中。往往安裝在制高點或彎頭等處，排除管道中多余氣體、提高管道路使用效率及降低能耗。用無紡布或者精密濾紙沾分析純酒精對逐個零部件進行擦拭，直至沒有臟色。大同閥門</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829327022075/8070471.png"></div><p style="text-indent:25px">閥門采購事項：閥門規(guī)格及類別，應(yīng)符合管道設(shè)計文件的要求。1、閥門的型號應(yīng)注明依據(jù)的國標編號要求。若是企業(yè)標準，應(yīng)注明型號的相關(guān)說明。2、閥門工作壓力，要求≥管道的工作壓力，在不影響價格的前提下，閥門可承受的工壓應(yīng)大于管道實際的工壓。3、閥門制造標準，應(yīng)說明依據(jù)的國標編號，若是企業(yè)標準，采購合同上應(yīng)附企業(yè)文件。閥門的性能檢測：1、閥門某一規(guī)格批量制造時，應(yīng)委托**性機構(gòu)進行以下性能的檢測：①閥門在工壓狀況下的啟閉力矩；②閥門在管道輸水狀況下的流阻系數(shù)的檢測。2、閥門在出廠前應(yīng)進行以下的檢測：①閥門在開啟狀況下，閥體應(yīng)承受閥門工壓值二倍的內(nèi)壓檢測；②閥門在關(guān)閉狀況下，兩側(cè)分別承受11倍閥門工壓值，無滲漏；但金屬密封的蝶閥，滲漏值亦不大于相關(guān)要求。大同閥門注脂時也要觀察閥門通徑與密封圈座平齊問題。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829341055344/2628815.png"></div><p style="text-indent:25px">閥門基本知識：閥門可用于控制水、蒸汽、油品、氣體、泥漿、各種腐蝕性介質(zhì)、液態(tài)金屬和放射性流體等各種類型流體的流動，閥門的工作壓力可從1.3х10MPa到1000MPa 的超高壓，工作溫度從-269℃的較低溫到1430℃的高溫。閥門的控制可采用多種傳動方式，如手動、電動、液動、氣動、蝸輪、電磁動、電磁－－液動、電－－液動、氣－－液動、正齒輪、傘齒輪驅(qū)動等；可以在壓力、溫度或其它形式傳感信號的作用下，按預定的要求動作，或者不依賴傳感信號而進行簡單的開啟或關(guān)閉，閥門依靠驅(qū)動或自動機構(gòu)使啟閉件作升降、滑移、旋擺或回轉(zhuǎn)運動，從而改變其流道面積的大小以實現(xiàn)其控制功能。</p><p style="text-indent:25px">蒸汽疏水閥：蒸汽疏水閥安裝在蒸汽加熱設(shè)備與凝結(jié)水回水集管之間。根據(jù)工作原理的不同，蒸汽疏水閥可化為以下三種類型：機械型利用凝結(jié)水與蒸汽的密度差，通過凝結(jié)水液位變化，使浮子升降帶動閥瓣開啟或關(guān)閉，達到阻汽排水目的。機械型疏水閥的過冷度小，不受工作壓力和溫度變化的影響，有水即排，加熱設(shè)備里不存水，能使加熱設(shè)備達到較佳換熱效率。較大背壓率為80%，工作質(zhì)量高，是生產(chǎn)工藝加熱設(shè)備較理想的疏水閥。熱靜力利用蒸汽和凝結(jié)水的溫差引起感溫元件的變型或膨脹帶動閥心啟閉。熱靜力型疏水閥的過冷度比較大，一般過冷度為15度到40度，它能利用凝結(jié)水中的一部分顯熱，閥前始終存有高溫凝結(jié)水，無蒸汽泄漏，節(jié)能效果明顯是在蒸汽管道，伴熱管線、小型加熱設(shè)備，采暖設(shè)備，溫度要求不高的小型加熱設(shè)備上，較理想的疏水閥。熱動力型這類疏水閥根據(jù)相變原理，靠蒸汽和凝結(jié)水通過時的流速和體積變化的不同熱力學原理，使閥片上下產(chǎn)生不同壓差，驅(qū)動閥片開關(guān)閥門。因熱動力式疏水閥的工作動力來源于蒸汽，所以蒸汽浪費比較大。結(jié)構(gòu)簡單、耐水擊、較大背為50%，有噪音，閥片工作頻繁，使用壽命短。氣密試驗必須是用純凈的氮氣。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829405928363/1360640.png"></div><p style="text-indent:25px">隔膜閥工作原理：隔膜閥啟閉件是一塊用軟質(zhì)材料制成的隔膜，它將閥體內(nèi)腔與閥蓋內(nèi)腔隔開。隔膜閥實際上不過是“鉗夾”的閥，一個彈性的，可擾的膜片，用螺椿連接在壓縮件上，壓縮件是由閥桿所操作而上下移動，當壓縮件上升，膜片就高舉，而造成通路，當壓縮件下降，膜片就壓在閥體堰上（假使為堰式閥）或壓在輪廓的底部（假使為直通式）。隔膜閥作用隔膜閥適用于開關(guān)及節(jié)流之用，隔膜閥的結(jié)構(gòu)簡單、流體阻力小、流通能力較同規(guī)格的其他類型閥大；無泄漏，能用于高粘度及有懸浮顆粒介質(zhì)的調(diào)節(jié)。隔膜把介質(zhì)與閥桿上腔隔離，所以沒有填料介質(zhì)也不會外漏。但是，由于隔膜和襯里材料的限制，耐壓性、耐溫性較差，一般只適用于1.6MPa公稱壓力和150℃以下。試壓方法隔膜閥強度試驗從任一端引入介質(zhì)，開啟閥瓣，另一端封閉，試驗壓力升至規(guī)定值后，看閥體和閥蓋無滲漏為合格。然后降壓至密封性試驗壓力，關(guān)閉閥瓣，打開另一端進行檢查，無滲漏為合格。注脂后，一定封好注脂口。避免雜質(zhì)進入，或注脂口處脂類氧化，封蓋要涂抹防銹脂，避免生銹。大同閥門</p><p style="text-indent:25px">用系統(tǒng)內(nèi)較大設(shè)汁流量或不應(yīng)小于3m／s的水流速度進行沖洗。大同閥門</p><p style="text-indent:25px">我國閥門行業(yè)發(fā)展現(xiàn)狀概述：中國的閥門業(yè)經(jīng)過幾十年的發(fā)展后,已經(jīng)取得了很大的進步,目前的閥門行業(yè)產(chǎn)品的使用其性能參數(shù)范圍從真空閥門到600 MPa的超高壓閥門,溫度從深冷-196℃到高溫570℃。使用介質(zhì)為水、蒸汽、尿素、乙烯、易爆等介質(zhì)。閥門是利潤率低的產(chǎn)品,市場競爭非常激烈。閥門在水處理行業(yè)中使用量大,主要以低壓閥門產(chǎn)品為主,如蝶閥、閘閥、止回閥。據(jù)了解,目前市場上具有一定規(guī)模的閥門企業(yè)有2000余家,大多數(shù)分布在江浙及中原一帶。目前我國在閥門市場中，已經(jīng)能夠提供多種產(chǎn)品：例如供熱閥，環(huán)保用閥、建筑用閥門等等。盡管近些年通過國內(nèi)企業(yè)的努力，一些中較高泵閥產(chǎn)品已經(jīng)實現(xiàn)了國產(chǎn)化，但是仍有一些產(chǎn)品處于進口狀態(tài)。據(jù)我國通用機械工業(yè)協(xié)會提供的數(shù)據(jù)，2013年以來我國進口量較大的泵產(chǎn)品主要包括：液壓往復式柱塞泵，其它液壓往復式排液泵，回轉(zhuǎn)式軸向柱塞泵，轉(zhuǎn)速在10000轉(zhuǎn)/分以下的其它離心泵、液體泵零件、真空泵等。閥門產(chǎn)品主要包括：減壓閥、油壓傳動閥、氣壓傳動閥、安全閥或溢流閥、閥門零件等。在高壓閥門領(lǐng)域仍然依賴進口，這也是我國閥門需要突破的領(lǐng)域。大同閥門</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2790152.html</p></div></div></div></div></div><div id="aal8ukf" class="page-right twoColRt"><div id="3tmmdju" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="umit28d" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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