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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gqn8gw2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580329873773/4289546.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="racwsed" 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>背壓式汽輪機(jī)選型維修,汽輪機(jī)</p><p><span>***更新：</span>2021-01-27 09:17:58</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="fpw2xbm" 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="2kwlmta" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="eoqnzln" class="box"><p><p style="text-indent:25px">減速器和汽輪機(jī)端采用3S離合器聯(lián)接，減速器、電機(jī)以及風(fēng)機(jī)之間采用膜片聯(lián)軸器聯(lián)接。背壓式汽輪機(jī)拖動(dòng)系統(tǒng)的設(shè)備主要包含了余熱鍋爐和驅(qū)動(dòng)汽輪機(jī)這兩組設(shè)備，這兩組設(shè)備中鍋爐主要起到了產(chǎn)生蒸汽的作用，驅(qū)動(dòng)汽輪機(jī)能夠?yàn)樵O(shè)備提供良好的驅(qū)動(dòng)方式。汽輪發(fā)電機(jī)組真空系統(tǒng)漏泄直接影響著汽輪機(jī)組的熱經(jīng)濟(jì)性和安全性，一是影響機(jī)組熱經(jīng)濟(jì)性，一般真空值每降低1，汽耗約增高1.5%--2.5%左右，背壓式汽輪機(jī)選型維修，傳熱端差每升高1°C，供電煤耗約增加1.5%--2，背壓式汽輪機(jī)選型維修.5%左右，所以真空值的高低對(duì)汽輪機(jī)的熱經(jīng)濟(jì)性有很大影響，背壓式汽輪機(jī)選型維修。汽輪機(jī)剛性聯(lián)軸器：傳遞振動(dòng)和軸向位移，對(duì)中性要求高。背壓式汽輪機(jī)選型維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="背壓式汽輪機(jī)選型維修,汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580329873773/4289546.png"></div><p style="text-indent:25px">根據(jù)熱力學(xué)原理，新蒸汽參數(shù)越高，熱力循環(huán)的熱效率也越高，早期汽輪機(jī)所用新蒸汽壓力和溫度都較低，熱效率低于20%。隨著單機(jī)功率的提高，30年代初新蒸汽壓力已提高到3～4兆帕，溫度為400～450℃。隨著高溫材料的不斷改進(jìn)，蒸汽溫度逐步提高到535℃，壓力也提高到6～12.5兆帕，個(gè)別的已達(dá)16兆帕，熱效率達(dá)30%以上。50年代初，已有采用新蒸汽溫度為600℃的汽輪機(jī)。以后又有新蒸汽溫度為650℃的汽輪機(jī)。現(xiàn)代大型汽輪機(jī)按照其輸出功率的不同，采用的新蒸汽壓力又可以分為各個(gè)壓力等級(jí)，通常采用新蒸汽壓力24.5～26兆帕，新蒸汽溫度和再熱溫度為535～578℃的超臨界參數(shù)，或新蒸汽壓力為16.5兆帕、新蒸汽溫度和再熱溫度為535℃的亞臨界參數(shù)。使用這些汽輪機(jī)的熱效率約為40%。南昌汽輪機(jī)檢修裝置汽輪機(jī)汽缸的高、中壓段一般采用合金鋼或碳鋼鑄造結(jié)構(gòu)，低壓段可根據(jù)容量和結(jié)構(gòu)要求。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="背壓式汽輪機(jī)選型維修,汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580615440117/1707729.png"></div><p style="text-indent:25px">汽輪機(jī)與往復(fù)式蒸汽機(jī)相比，汽輪機(jī)中的蒸汽流動(dòng)是連續(xù)的、高速的，單位面積中能通過(guò)的流量大，因而能發(fā)出較大的功率。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)。</p><p style="text-indent:25px">汽輪機(jī)檢修加工會(huì)遇到哪些難題呢?平時(shí)廠家在針對(duì)汽輪機(jī)內(nèi)部結(jié)構(gòu)“口小肚子大”、加工空間小且軸承檔內(nèi)各尺寸精度要求高的問題：工件結(jié)構(gòu)，汽輪機(jī)為我公司設(shè)計(jì)的一款汽輪機(jī)，此臺(tái)汽輪機(jī)前汽缸為鑄件，前汽缸與前軸承座是通過(guò)下半的半圓坡口焊接連接，并且該工件總長(zhǎng)有2m，內(nèi)徑小處*有φ 235mm，加工空間很小，而且軸承座各檔內(nèi)圓的尺寸精度要求很高，對(duì)于加工及檢驗(yàn)測(cè)量是一個(gè)很大的挑戰(zhàn)。加工難點(diǎn)分析，在圖樣的消化過(guò)程中，我們發(fā)現(xiàn)了在汽輪機(jī)加工時(shí)可能出現(xiàn)的問題與難點(diǎn)如下：前汽缸與前軸承座通過(guò)下半的半圓坡口焊接連接，如何保障焊接精度？如何控制焊接變形量？前汽缸與前軸承座焊接完后整體工件長(zhǎng)度有2m，其中前汽封小內(nèi)圓只有φ235mm，而軸承檔部分要將車刀穿過(guò)小內(nèi)圓來(lái)加工，軸承檔大內(nèi)圓為φ359mm，造成了“口小肚子大”的情況，而且軸承檔內(nèi)各尺寸精度要求很高，公差小處*為0.03mm。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="背壓式汽輪機(jī)選型維修,汽輪機(jī)" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408580709453873/6232293.png"></div><p style="text-indent:25px">在60年代，世界工業(yè)發(fā)達(dá)的國(guó)家生產(chǎn)的汽輪機(jī)已經(jīng)達(dá)到500—600MW等級(jí)水平。1972年瑞士的一家公司制造的1300MW雙軸全速汽輪機(jī)在美國(guó)投入運(yùn)行，設(shè)計(jì)參數(shù)達(dá)到24Mpa，蒸汽溫度538°C，3600rpm；1974年制造的1300MW單軸半速（1500rpm）飽和蒸汽參數(shù)汽輪機(jī)投入運(yùn)行；1982年世界上較大的1200MW單軸全速汽輪機(jī)在前蘇聯(lián)投入運(yùn)行，壓力24Mpa，蒸汽溫度540°C。世界各國(guó)都在研究大容量、高參數(shù)汽輪機(jī)的研究和開發(fā)，如俄羅斯正在研究2000MW汽輪機(jī)。主要是大容量汽輪機(jī)有如下特點(diǎn)：降低單位功率投資成本。如800MW機(jī)組比500MW汽輪機(jī)的千瓦造價(jià)低17%。汽輪機(jī)低壓外缸由裙式臺(tái)板支承，此臺(tái)板與汽缸下半制成一體，并沿汽缸下半向兩端延伸。背壓式汽輪機(jī)選型維修</p><p style="text-indent:25px">汽輪機(jī)靜子包括進(jìn)汽部分、汽缸、隔板和靜葉柵、汽封及軸承等。背壓式汽輪機(jī)選型維修</p><p style="text-indent:25px">汽輪機(jī)電廠對(duì)其員工的管理制度和力度也要相對(duì)變革，對(duì)于平時(shí)紀(jì)律松散，不認(rèn)真工作的員工加以懲罰，并且指派專門人員對(duì)場(chǎng)內(nèi)的安全和使用機(jī)器是否規(guī)范加以檢查，如有沒關(guān)機(jī)器或者不按正規(guī)工作流程胡亂開關(guān)機(jī)器的員工進(jìn)行教育，這樣才能提高場(chǎng)內(nèi)員工的自覺性，提高機(jī)器使用壽命的同時(shí)做到了節(jié)能降耗。對(duì)于電廠的工作人員，要統(tǒng)一提高他們的素質(zhì)，在職人員定期進(jìn)行培訓(xùn)，講解節(jié)能降耗對(duì)于國(guó)家、本廠和個(gè)人的好處，潛移默化影響員工對(duì)于節(jié)能降耗問題加以關(guān)心。對(duì)于招聘的人員考核力度加大，把汽輪機(jī)節(jié)能降耗問題作為考核問題中較為重要的一類。背壓式汽輪機(jī)選型維修</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司是一家市政公用工程，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)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)咨詢和技術(shù)服務(wù)。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。上海含商建設(shè)擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供維修高壓主汽門、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(bǔ)焊，熱處理、研磨。上海含商建設(shè)始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。上海含商建設(shè)始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使上海含商建設(shè)在行業(yè)的從容而自信。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3035246.html</p></div></div></div></div></div><div id="ol3fevc" class="page-right twoColRt"><div id="8vxzwnu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gqsu8og" class="recomPic likePro"><a 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