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href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_gyrhyhw/">工業(yè)潤滑油</a>?<a href="http://www.cdcfah.com/cp/third-gyrhyhw_qilunjiyousd/">汽輪機油</a>?南京汽輪機調(diào)節(jié)閥 **** 上海含商建設(shè)工程供應(yīng)</p><div id="jdva28z" class="leftbox clearfix"><h1>南京汽輪機調(diào)節(jié)閥 **** 上海含商建設(shè)工程供應(yīng)</h1><div id="833f2dp" class="proBig"><div id="sxpjah2" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580411445953/6771462.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="js8mjbn" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580411445953/6771462.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3hcegnz" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>南京汽輪機調(diào)節(jié)閥,汽輪機</p><p><span>***更新：</span>2020-12-11 07:21:35</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="au8khtq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海含商建設(shè)工程有限公司</a></p><p><span>聯(lián)系人：</span>朱瑩</p><p><span>郵箱: </span>Irene_zy516@163.com</p><p><span>電話: </span>13918191286</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://shhanshang.shop.88360.com</p><p><span>手機: </span>021-58210069</p><p><span>地址: </span>上海市崇明區(qū)新河鎮(zhèn)新申路921弄2號L區(qū)228室(上海富盛經(jīng)濟開發(fā)區(qū))</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="22ypb7f" class="page-proshow02"><p class="title">詳細說明</p><div id="5j38umt" class="box"><p><p style="text-indent:25px">背壓式汽輪機的排汽壓力大于大氣壓力的汽輪機；抽汽式汽輪機是能從中間級抽出蒸汽供熱的汽輪機；飽和蒸汽輪機是以飽和狀態(tài)的蒸汽作為新蒸汽的汽輪機。汽輪機的蒸汽從進口膨脹到出口，單位質(zhì)量蒸汽的容積增大幾百倍，甚至上千倍，南京汽輪機調(diào)節(jié)閥，因此各級葉片高度必須逐級加長。大功率凝汽式汽輪機所需的排汽面積很大，末級葉片須做得很長。汽輪機裝置的熱經(jīng)濟性用汽輪機熱耗率或熱效率表示，南京汽輪機調(diào)節(jié)閥，南京汽輪機調(diào)節(jié)閥。汽輪機熱耗率是每輸出單位機械功所消耗的蒸汽熱量，熱效率是輸出機械功與所耗蒸汽熱量之比。配套設(shè)施：汽輪機通常在高溫高壓及高轉(zhuǎn)速的條件下工作，是一種較為精密的重型機械。南京汽輪機調(diào)節(jié)閥</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京汽輪機調(diào)節(jié)閥,汽輪機" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580411445953/6771462.png"></div><p style="text-indent:25px">各國都在進行大容量、高參數(shù)機組的開發(fā)和設(shè)計，如俄羅斯正在開發(fā)的2000MW汽輪機。日本正在開發(fā)一種新的合金材料，將使高中、低壓轉(zhuǎn)子一體化成為可能。汽輪機是能將蒸汽熱能轉(zhuǎn)化為機械功的外燃回轉(zhuǎn)式機械。來自鍋爐的蒸汽進入汽輪機后，依次經(jīng)過一系列環(huán)形配置的噴嘴和動葉，將蒸汽的熱能轉(zhuǎn)化為汽輪機轉(zhuǎn)子旋轉(zhuǎn)的機械能。蒸汽在汽輪機中，以不同方式進行能量轉(zhuǎn)換，便構(gòu)成了不同工作原理的汽輪機。汽輪機種類很多，根據(jù)結(jié)構(gòu)、工作原理、熱力性能、用途、氣缸數(shù)目的不同有多種分類方法。小型背壓式汽輪機訂做商家超高壓汽輪機：主蒸汽壓力在11.77—13.93Mpa。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京汽輪機調(diào)節(jié)閥,汽輪機" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580466397141/2626342.png"></div><p style="text-indent:25px">汽輪機葉型是葉片的工作部分，相鄰葉片的葉型部分之間構(gòu)成汽流通道，蒸汽流過時將動能轉(zhuǎn)換成機械能。按葉型部分橫截面的變化規(guī)律，葉片可以分為等截面直葉片、變截面直葉片、扭葉片、彎扭葉片。等截面直葉片：斷面型線和面積沿葉高是相同的，加工方便，制造成本較低，有利于在部分級實現(xiàn)葉型通用等優(yōu)點。但是氣動性能差，主要用于短葉片。彎扭葉片：截面型心的連線連續(xù)發(fā)生扭轉(zhuǎn)，可很好地減小長葉片的葉型損失，具有良好的波動特性及強度，但制造工藝復(fù)雜，主要用于長葉片。</p><p style="text-indent:25px">汽輪機的接地方式有哪些？主要有以下三種接地方式：工作接地，工作接地是將中性點接地。目的是降低觸電電壓。汽輪機中性點不接地的系統(tǒng)；對于中性點接地的系統(tǒng)，觸電電壓就降到接近或等于相電壓。迅速切斷故障設(shè)備。中性點不接地的系統(tǒng)，一相接地時，由于導(dǎo)線和地面存在電容和絕緣電阻，可以構(gòu)成電流通路，接地電流很小；而對于中性點接地系統(tǒng)，當(dāng)一相接地后接地電流較大，保護裝置會迅速動作，斷開故障點。降低電氣設(shè)備對地的絕緣水平。在中性點不接地的系統(tǒng)中，一相接地時，會使另兩相的對地電壓升高到線電壓；按用途：可分為為電站汽輪機、工業(yè)汽輪機、船用汽輪機等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京汽輪機調(diào)節(jié)閥,汽輪機" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580860674475/2922485.png"></div><p style="text-indent:25px">使用汽輪機的熱效率約為40%，另外，汽輪機的排汽壓力越低，蒸汽循環(huán)的熱效率就越高。不過排汽壓力主要取決凝汽器的真空度，真空度又取決于冷卻水的溫度和抽真空的設(shè)備（通常稱為真空泵），如果采用過低的排汽壓力，就需要增大冷卻水流量、增大凝汽器冷卻水和冷卻介質(zhì)的換熱面、降低被使用的冷卻水的溫度和抽真空的設(shè)備，較長的末級葉片，但同時真空太低又會導(dǎo)致汽輪機汽缸（低壓缸）的蒸汽流速加快，使汽輪機汽缸（低壓缸）差脹加劇，危及汽輪機安全運轉(zhuǎn)。等截面直葉片：斷面型線和面積沿葉高是相同的，加工方便，制造成本較低，有利于部分級實現(xiàn)葉型通用等優(yōu)點。汽輪機的設(shè)備供貨報價</p><p style="text-indent:25px">汽輪機高壓缸有單層缸和雙層缸兩種形式。南京汽輪機調(diào)節(jié)閥</p><p style="text-indent:25px">凝汽器真空每降低1KPa會使汽輪機汽耗增加1.5%～2.5%，發(fā)電機煤耗增加0.25%，使循環(huán)效率下降。汽輪機排汽溫度的升高，會引起汽輪機軸承中心偏移，嚴重時會引起汽輪機的振動。此外，凝汽器真空降低時在保證機組出力不變時，必須增加蒸汽流量，導(dǎo)致軸向推力增大，影響汽輪機安全運行。另一方面，空氣漏入凝結(jié)水中會使凝結(jié)水溶氧不合格，腐蝕汽輪機、鍋爐設(shè)備，影響機組的安全運行。所以在汽輪機運行過程中，真空是一項非常重要的參數(shù)，真空值的高低，直接影響機組的經(jīng)濟性與安全性。南京汽輪機調(diào)節(jié)閥</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司致力于機械及行業(yè)設(shè)備，是一家服務(wù)型的公司。上海含商建設(shè)致力于為客戶提供良好的維修高壓主汽門、高壓調(diào)門，維修中壓主汽門、中壓調(diào)門，閥座的車削、堆焊、補焊，熱處理、研磨，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事機械及行業(yè)設(shè)備多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。上海含商建設(shè)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的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2359006.html</p></div></div></div></div></div><div id="eyfh8mj" class="page-right twoColRt"><div id="5jdzbdk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cmtq2wy" class="recomPic likePro"><a 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