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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dzxn73d" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580375088584/9128724.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hfjp5th" 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>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>杭州凝汽式汽輪機(jī)背壓式汽輪機(jī),汽輪機(jī)</p><p><span>***更新：</span>2021-01-24 01:17:25</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="75t7pvr" 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(jī): </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(hào)L區(qū)228室(上海富盛經(jīng)濟(jì)開(kāi)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="n9n57r7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="txd79rp" class="box"><p><p style="text-indent:25px">汽輪機(jī)是一種以蒸汽為動(dòng)力，并將蒸氣的熱能轉(zhuǎn)化為機(jī)械功的旋轉(zhuǎn)機(jī)械，是現(xiàn)代火力發(fā)電廠中應(yīng)用較普遍的原動(dòng)機(jī)。汽輪機(jī)具有單機(jī)功率大、效率高、壽命長(zhǎng)等優(yōu)點(diǎn)。沖動(dòng)式汽輪機(jī)蒸汽主要在靜葉中膨脹，在動(dòng)葉中只有少量的膨脹。反動(dòng)式汽輪機(jī)蒸汽在靜葉和動(dòng)葉中膨脹，而且膨脹程度相同。1200MW機(jī)組比800MW機(jī)組的千瓦造價(jià)低15%—20%，提高運(yùn)行經(jīng)濟(jì)性，如法國(guó)的600MW機(jī)組比國(guó)產(chǎn)的125MW機(jī)組的熱耗率低276kj/kW.h，每年可節(jié)約燃煤4萬(wàn)噸，杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)。加快電網(wǎng)建設(shè)速度，滿足經(jīng)濟(jì)發(fā)展需要，杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)，提高電網(wǎng)的調(diào)峰能力，杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)。汽輪機(jī)按照工作原理分為沖動(dòng)式汽輪機(jī)和反動(dòng)式汽輪機(jī)。按工作原理：有蒸汽主要在各級(jí)噴嘴（或靜葉）中膨脹的沖動(dòng)式汽輪機(jī)。杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州凝汽式汽輪機(jī)背壓式汽輪機(jī),汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580375088584/9128724.png"></div><p style="text-indent:25px">在汽輪機(jī)需要停機(jī)時(shí)，要采用合理參數(shù)來(lái)停機(jī)，這樣可很好地避免汽輪各部分緊急停機(jī)狀態(tài)的出現(xiàn)，破壞汽輪機(jī)的主輔設(shè)施，使汽輪機(jī)的使用壽命得到延長(zhǎng)。余熱發(fā)電汽輪機(jī)的選擇分類有很多：采用背壓式汽輪機(jī)，如單進(jìn)式低參數(shù)汽輪機(jī)，進(jìn)口參數(shù)分別為1.2～2.0MPa和280～300℃，其缺點(diǎn)是余熱利用率不高，250℃以下的余熱不能回收利用。因此必須再增加純低溫余熱發(fā)電系統(tǒng)。采用兩級(jí)低溫余熱補(bǔ)充燃燒發(fā)電系統(tǒng)的余熱發(fā)電汽輪機(jī)。當(dāng)廢氣溫度從320～350～550～650時(shí)，熱綜合利用率高，發(fā)電量大。但該技術(shù)適用于煤矸石等廉價(jià)煤等劣質(zhì)煤。杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)單層缸多用于中低參數(shù)的汽輪機(jī)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州凝汽式汽輪機(jī)背壓式汽輪機(jī),汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580329873773/4289546.png"></div><p style="text-indent:25px">大功率汽輪機(jī)可以采用較高的蒸汽壓力和溫度，故熱效率較高。19世紀(jì)以來(lái)，汽輪機(jī)的發(fā)展就是在不斷提高安全可靠性、耐用性和保證運(yùn)行方便的基礎(chǔ)上，增大單機(jī)功率和提高裝置的熱經(jīng)濟(jì)性。汽輪機(jī)的出現(xiàn)推動(dòng)了電力工業(yè)的發(fā)展，到20世紀(jì)初，電站汽輪機(jī)單機(jī)功率已達(dá)10兆瓦。隨著電力應(yīng)用的日益普遍，美國(guó)紐約等大城市的電站尖峰負(fù)荷在20年代已接近1000兆瓦，如果單機(jī)功率只有10兆瓦，則需要裝機(jī)近百臺(tái)，因此20年代時(shí)單機(jī)功率就已增大到60兆瓦，30年代初又出現(xiàn)了165兆瓦和208兆瓦的汽輪機(jī)。此后的經(jīng)濟(jì)衰退和第二次世界大戰(zhàn)期間爆發(fā)，使汽輪機(jī)單機(jī)功率的增大處于停頓狀態(tài)。</p><p style="text-indent:25px">使用汽輪機(jī)的熱效率約為40%，另外，汽輪機(jī)的排汽壓力越低，蒸汽循環(huán)的熱效率就越高。不過(guò)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(guò)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(zhǎng)的末級(jí)葉片，但同時(shí)真空太低又會(huì)導(dǎo)致汽輪機(jī)汽缸（低壓缸）的蒸汽流速加快，使汽輪機(jī)汽缸（低壓缸）差脹加劇，危及汽輪機(jī)安全運(yùn)轉(zhuǎn)。汽輪機(jī)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(guò)時(shí)將動(dòng)能轉(zhuǎn)換成機(jī)械能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州凝汽式汽輪機(jī)背壓式汽輪機(jī),汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580784483211/2700379.png"></div><p style="text-indent:25px">汽輪機(jī)在社會(huì)經(jīng)濟(jì)的各部門(mén)中都有普遍的應(yīng)用。汽輪機(jī)種類很多，并有不同的分類方法。汽輪機(jī)的蒸汽從進(jìn)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，因此各級(jí)葉片高度必須逐級(jí)加長(zhǎng)。大功率凝汽式汽輪機(jī)所需的排汽面積很大，末級(jí)葉片須做得很長(zhǎng)。大型汽輪機(jī)組的研制是汽輪機(jī)未來(lái)發(fā)展的一個(gè)重要方向，這其中研制更長(zhǎng)的末級(jí)葉片，是進(jìn)一步發(fā)展大型汽輪機(jī)的一個(gè)關(guān)鍵；研究提高熱效率是汽輪機(jī)發(fā)展的另一方向，采用更高蒸汽參數(shù)和二次再熱，研制調(diào)峰機(jī)組，推廣供熱汽輪機(jī)的應(yīng)用則是這方面發(fā)展的重要趨勢(shì)。高壓汽輪機(jī)：主蒸汽壓力在5.88—9.8Mpa。杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)</p><p style="text-indent:25px">汽輪機(jī)氣缸保證蒸汽在汽輪機(jī)內(nèi)部完成能量的轉(zhuǎn)換過(guò)程。杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)</p><p style="text-indent:25px">作為傳統(tǒng)支柱產(chǎn)業(yè)的銷售不知何時(shí)被貼上了夕陽(yáng)產(chǎn)業(yè)的標(biāo)簽，認(rèn)為它就是一個(gè)勞動(dòng)密集型產(chǎn)業(yè)，和智能制造搭不上邊。殊不知，在科學(xué)技術(shù)飛速發(fā)展的當(dāng)下，競(jìng)爭(zhēng)對(duì)手也紛紛出臺(tái)了紡織產(chǎn)業(yè)領(lǐng)域發(fā)展戰(zhàn)略。再制造就是追求低碳、環(huán)保、綠色制造，被視為未來(lái)產(chǎn)業(yè)升級(jí)替代的發(fā)展方向。有資料顯示，維修高壓主汽門(mén)、高壓調(diào)門(mén)，維修中壓主汽門(mén)、中壓調(diào)門(mén)，閥座的車削、堆焊、補(bǔ)焊，熱處理、研磨再制造產(chǎn)品比新產(chǎn)品的制造節(jié)能60%，平均有55%的部件都可以被再利用，制造過(guò)程中可以節(jié)省80%以上的能源消耗。2019年上半年，汽車起重機(jī)銷售了2.55萬(wàn)臺(tái)，較有限責(zé)任公司（自然）上年同期大幅增長(zhǎng)53.3%。(2016年我國(guó)汽車起重機(jī)銷量跌至低谷，近年來(lái)受*****的影響，大型工程建設(shè)需要增加，我國(guó)汽車起重機(jī)銷量迅速反彈，預(yù)計(jì)未來(lái)汽車起重機(jī)仍將保持大幅增長(zhǎng)的趨勢(shì))。無(wú)論是從減輕環(huán)境負(fù)擔(dān)，還是打破對(duì)外貿(mào)易壁壘等方面考慮，節(jié)能環(huán)保之路都將成為市政公用工程，管道工程，機(jī)電設(shè)備安裝、維修（除特種設(shè)備），化工產(chǎn)品及原料（除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、儀器儀表、五金交電、橡塑制品、建筑材料、裝潢材料、電子產(chǎn)品、日用百貨的銷售，機(jī)械設(shè)備技術(shù)領(lǐng)域內(nèi)的技術(shù)開(kāi)發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)咨詢和技術(shù)服務(wù)。發(fā)展的主流趨勢(shì)。今后中國(guó)機(jī)械產(chǎn)業(yè)的發(fā)展將更加注重轉(zhuǎn)型升級(jí)，而在具體的實(shí)施策略中，節(jié)能環(huán)保將成為主要的發(fā)展方向。杭州凝汽式汽輪機(jī)背壓式汽輪機(jī)</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司主要經(jīng)營(yíng)范圍是機(jī)械及行業(yè)設(shè)備，擁有一支專業(yè)技術(shù)團(tuán)隊(duì)和良好的市場(chǎng)口碑。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(mén)、高壓調(diào)門(mén)，維修中壓主汽門(mén)、中壓調(diào)門(mén)，閥座的車削、堆焊、補(bǔ)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。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于機(jī)械及行業(yè)設(shè)備行業(yè)的發(fā)展。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(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/2980005.html</p></div></div></div></div></div><div id="bhpfd9j" class="page-right twoColRt"><div id="pn75rjr" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7pdtzvr" 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" 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