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src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cgdq7mj" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rbyvx87" 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>產品關鍵詞：</span>西藏質量空氣預熱器,空氣預熱器</p><p><span>***更新：</span>2020-08-18 12:18:11</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="dh7qh8j" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海板換機械設備有限公司</a></p><p><span>聯(lián)系人：</span>張云周</p><p><span>郵箱: </span>shinfo@shphe.com</p><p><span>電話: </span>15921733465</p><p><span>傳真: </span>021_</p><p><span>網址: </span>http://www.shphe.com</p><p><span>手機: </span>021-57247534</p><p><span>地址: </span>山陽鎮(zhèn)山寧路99號</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="mgdfho4" class="page-proshow02"><p class="title">詳細說明</p><div id="f8xhtke" class="box"><p><p> 焊接板式換熱器又分為：半焊接板式換熱器、全焊接板式換熱器、板殼式換熱器、釬焊板式換熱器。經常用到的分類還有以下：1根據(jù)單位空間內的換熱面積的多少，板式換熱器屬于緊湊式換熱器，主要是與管殼式換熱器進行比較，傳統(tǒng)的管殼式換熱器占地較大。2根據(jù)工藝用途，又有不同的叫法：板式加熱器、板式冷卻器、板式冷凝器、板式預熱器；3根據(jù)流程組合，分為單程板式換熱器和多程板式換熱器。4根據(jù)兩種介質的流動方向，分為順流（并流）板式換熱器、逆流板式換熱器、交叉流（橫流）板式換熱器，后兩者用的比較多；5按照流道的間隙大小，分為常規(guī)間隙板式換熱器和寬間隙板式換熱器；6按照波紋，板式換熱器有更詳細的分別，不再累述，請參考：板式換熱器板片波紋形式。7按照是否是成套產品，可分為單機板式換熱器、板式換熱器機組。板式換熱器選型計算編輯板型選擇板片型式或波紋式應根據(jù)換熱場合的實際需要而定。對流量大允許壓降小的情況，應選用阻力小的板型，反之選用阻力大的板型。根據(jù)流體壓力和溫度的情況，確定選擇可拆卸式，還是釬焊式，西藏質量空氣預熱器。確定板型時不宜選擇單板面積太小的板片，西藏質量空氣預熱器，以免板片數(shù)量過多，板間流速偏小，西藏質量空氣預熱器，傳熱系數(shù)過低，對較大的換熱器更應注意這個問題。上海板式空氣預熱器廠家有哪些？西藏質量空氣預熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏質量空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg"></div><p> 投入暖風器或熱風再循環(huán)努力控制空預器綜合冷端溫度不低于目標溫度?？疹A器出口綜合冷端溫度低于目標值時，優(yōu)先采用降低磨煤機出口溫度，適當增加一次風比例（注意鍋爐燃燒和飛灰含碳量的變化情況），以提高空預器出口排煙溫度。空預器蒸汽吹灰疏水溫度控制在比吹灰母管壓力對應的飽和溫度高5-20℃范圍內，空預器實際排煙溫度高于目標綜合冷端溫度時，取下限，否則取上限。安裝并運行脫硝裝置的鍋爐，要防止局部或部分時段噴氨過量引起的氨逃逸量超標(≯3ppm)。優(yōu)化鍋爐配風，利用煙氣再循環(huán)，防止過氧（必要時根據(jù)CO生成量適度控制低氧）燃燒和爐膛局部溫度過高，減少爐內SO3的生成。空預器煙氣側差壓超過設計值或空預器冷端溫度低于目標溫度時，應增加吹灰頻次，煙氣側差壓超過，提高空預器冷端吹灰器彈簧閥后壓力（比較高至）加強吹灰，當差壓恢復正常值范圍內，逐漸恢復正常吹灰壓力，防止吹損蓄熱元件。加強鍋爐暖風器、熱風再循環(huán)、空預器扇形板自動調整裝置設備的運行維護，保證設備運行良好。暖風器、鍋爐受熱面（特別是省煤器）泄漏后要及時隔離或停爐處理?？疹A器停爐進行水沖洗后，啟動點火前要充分烘干。要加強空預器進出口差壓、溫度。西藏質量空氣預熱器哪里生產板式空氣預熱器？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏質量空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410559414062/9489232.jpg"></div><p> 進汽端比疏水端提高了約300mm左右，可以緩解了暖風器泄漏幾率。在暖風器處都增加了玻璃觀察窗，以方便運行過程中檢查暖風器是否內漏。制粉系統(tǒng)投運時盡量滿足著火能量機組每次停運時，在條件允許的情況下，盡量將安裝有等離子點火裝置的磨煤機對應煤斗燒空，并在下次機組啟動前將該煤斗配上發(fā)熱量大于4500kcal/kg，揮發(fā)份較高的煤種。同時等離子磨煤機啟動前應保證二次風溫大于200℃，以減少制粉系統(tǒng)啟動初期大量不完全燃燒產物的生成，從而抑止空預器堵灰的發(fā)生。加強省煤器輸灰系統(tǒng)綜合治理鍋爐日常運行中加強省煤器灰斗料位的監(jiān)視和控制，一旦發(fā)現(xiàn)高料位，立即聯(lián)系檢修進行處理。同時利用停爐機會，檢查省煤器灰斗真實料位，徹底疏通輸灰管線。對空預器要進行定期吹灰且吹灰蒸汽要保證足夠的過熱度吹灰至少每8小時進行一次，如果發(fā)現(xiàn)空預器差壓有上升趨勢，應縮短吹灰時間間隔。吹灰程序控制必須采取疏水溫度控制，不能通過時間簡單判斷疏水是否干凈，必要時進行疏水管路改造以確?？疹A器吹灰效果。加強吹灰閥門的綜合治理每次停爐后對空預器吹灰進汽閥和吹灰***進行檢查處理，保證運行中不發(fā)生濕蒸汽泄漏到空預器換熱元件上。</p><p> 隨國家節(jié)能減排工作的不斷深入，新版《火電廠大氣污染物排放標準》（GB13223-2011）要求，NOx排放限值為100mg/Nm3。現(xiàn)在燃煤鍋爐均已安裝脫硝系統(tǒng)，其中絕大部分采用SCR脫硝方式，SCR脫硝方式運行中必然發(fā)生部分氨逃逸。2013年11月份起，空預器差壓逐漸增大，至2014年3月份，在負荷到270MW時，空預器差壓比較大達：從空預器差壓發(fā)展可看出，堵塞具有如下特點：（1）A空預器堵塞情況較輕，B空預器堵塞較嚴重；（2）堵塞發(fā)展很快，2013年11月20日，負荷280MW時，A、B側空預器煙氣差壓*分別為、，到4個月后，2014年3月27日煙氣差壓已達到。其中特別是B側空預器，堵塞明顯嚴重，造成B側煙氣流量減少。因而A引風機煙氣通流量加大，電流明顯上升，由134A上升到160A。（3）B空預器旋轉一圈的情況下，差壓呈周期性變化，比較大達kPa，**小達kPa，說明B空預器局部堵塞嚴重。即便以**小值比較，堵塞現(xiàn)象也較為明顯。空預器解體后堵塞情況2014年4月大修期間，解體空預器蓄熱元件，發(fā)現(xiàn)堵塞情況主要集中冷段蓄熱元件約350mm以下部位，且堵塞物較硬。堵塞物化學分析空預器冷端冷端密封板上均為結晶樣顆粒，且結晶物較為堅硬?？疹A器運行半年后阻力增加約50%，對引風機也會造成較大影響。板式空氣預熱器便于清潔維護。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏質量空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><p> 在《火力發(fā)電機節(jié)能降耗技術導則》、《300MW鍋爐及輔機節(jié)能降耗技術導則》和《燃煤電廠節(jié)能降耗技術推廣應用目錄》推薦的相關技術基礎上，對空預器密封治理的相關技術和注意事項進行介紹：（1）密封方式簡介1)雙道密封改造：將轉子隔倉數(shù)增加一倍，通常由24分倉改為48分倉，加寬扇形板，形成雙密封面，漏風率可降低30%，通常漏風率低于6%。不足之處是風煙阻力略有增加，轉子重量增加；如將原傳熱元件拆包切割，易造成傳熱面積下降和損元件。鶴崗電廠采用了該方案。2）三道密封改造：在原雙密封改造基礎上，進一步增加轉子隔倉，加寬扇形板，形成三道密封面，漏風率可在雙密封基礎上進一步下降12%。但造成隔倉過密，傳熱元件偏小，風煙阻力上升10%左右。目前部分一次風壓頭較高的新機組采用。3）拖拽式軟密封技術：類似柔性密封技術，在徑向隔板原徑向密封片的基礎上，再增加一道較薄的有一定彈性和折角較大的密封片，以增加密封道數(shù)，并允許密封片與扇形板有一定接觸。在投運初期能有效降低漏風率（可至4%左右）。不足之處：只在間隙小于10mm時有效，大機組無LCS（間隙自調裝置）時熱端效果不明顯；運行時間長后接觸式密封片易磨損失效。專業(yè)板式空氣預熱器廠家。西藏質量空氣預熱器</p><p style="text-indent:25px">板式空氣預熱器是全焊接密封結構。西藏質量空氣預熱器</p><p> 底梁還通過底部軸承凳板支撐著空預器轉動部件的載荷。底梁還支撐端柱、底部扇形板和底部扇形板支板的重量。底部過渡煙風道的重量由底部結構承受。底梁上的所有載荷分別由兩端傳遞到用戶鋼架上。7、頂部和底部三分倉結構三分倉結構包括三分倉扇形板和三分倉扇形板支板等，布置在轉子頂部和底部的空氣一側，內緣對接在項、底結構的扇形板和翼板上，外緣則焊接道支撐在轉子的外殼上的三分倉軸向密封板上。頂、底三分倉扇形板與三分倉軸向密封板一起，將空氣側分隔成一次風和二次風。8、過渡煙風道過渡煙風道位于轉子熱端和冷端的煙氣側和空氣側，其作用是將氣流導入和引出轉子。三分倉布置的風道又被進一步分為二次風道和一次風道。過渡煙風道連接在轉子外殼平板以及頂?shù)捉Y構上。為保證空預器結構合理受力，所有過渡煙風道內均設置內撐管。9、轉子驅動裝置轉子由中心驅動裝置驅動，驅動裝置直接與轉子頂部端軸相連。兩臺電機均能以正、反兩個方向驅動空預器，只有在空預器不帶負荷時才允許改變驅動方向。兩臺驅動電機與初級減速箱均為法蘭連接。終級減速箱通過輸出軸套直接套裝在驅動軸軸上并用鎖緊盤固定。終級減速箱一側裝有扭矩臂。西藏質量空氣預熱器</p><p style="text-indent:25px">上海板換機械設備有限公司坐落山陽鎮(zhèn)山寧路99號，交通便利，環(huán)境優(yōu)美，是一家生產型企業(yè)。公司致力于為客戶提供安全、質量有保障的質量產品及服務，是一家有限責任公司企業(yè)。以滿足顧客要求為己任；以顧客永遠滿意為標準；以保持行業(yè)**為目標，提供***的[ "板式換熱器機組", "可拆式板式換熱器", "焊接式板式換熱器", "板式空氣預熱器" ]。上海板換將以真誠的服務、創(chuàng)新的理念、***的產品，為彼此贏得全新的未來！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/956087.html</p></div></div></div></div></div><div id="ko3askk" class="page-right twoColRt"><div id="xmoli8a" class="box01 margin10 clearfix"><h3><a 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