本文選題：汽輪機(jī) + 通流部分��； 參考：《華北電力大學(xué)》2013年碩士論文

【摘要】：我國早期投產(chǎn)的200MW汽輪機(jī)限于當(dāng)時(shí)的設(shè)計(jì)制造技術(shù)，不但缸效率低，還存在一定的安全隱患。因此，對(duì)現(xiàn)役國產(chǎn)200MW汽輪機(jī)組通流部分進(jìn)行技術(shù)改造具有重大的實(shí)用價(jià)值和一定的學(xué)術(shù)意義。 論文對(duì)海勃灣發(fā)電廠200MW凝汽式機(jī)組通流部分改造方案進(jìn)行了研究，獲得了合理的改造方案，即：調(diào)節(jié)級(jí)噴嘴葉柵采用子午面收縮形式；低壓缸靜葉柵采用彎扭靜葉片，動(dòng)葉柵采用高效葉型，壓力級(jí)隔板采用焊接方式，動(dòng)葉和圍帶采用一體化結(jié)構(gòu)，增加葉頂汽封齒的數(shù)量，增大末級(jí)、次末級(jí)根部反動(dòng)度，末級(jí)動(dòng)葉進(jìn)汽側(cè)鑲嵌司太立合金片。此外還對(duì)關(guān)鍵的零部件的結(jié)構(gòu)強(qiáng)度、剛度以及振動(dòng)特性進(jìn)行了計(jì)算校核分析和優(yōu)化設(shè)計(jì)。 對(duì)改造前后汽輪機(jī)機(jī)組的經(jīng)濟(jì)效益進(jìn)行了分析對(duì)比，改造后汽輪機(jī)機(jī)組的經(jīng)濟(jì)效益得到了明顯提高，熱耗下降了617.2kJ/(kW·h)，效率提高了7.08%，煤耗降低了24.57g/(kW·h)左右，年節(jié)約標(biāo)準(zhǔn)煤27862噸。同時(shí)，由于汽耗量的減少，在同等發(fā)電量的情況下，煙氣量減少，使得受熱面的磨損減輕，除灰脫硫設(shè)備及相關(guān)管道的磨損也減小，各輔機(jī)功耗減小，使廠用電量降低。 分析了該機(jī)組通流部分改造后出現(xiàn)的問題，例如低壓缸隔板與汽缸相互干涉以及軸向間隙偏小等，制定了相應(yīng)的解決措施，對(duì)汽缸凸肩進(jìn)行等離子車削確保切割精度，采用冷焊的工藝以減少隔板變形。 總之，海勃灣電廠200MW機(jī)組通流部分改造的方案是可行的，效益是顯著的。該機(jī)組改造的理論與實(shí)踐可為國內(nèi)火電機(jī)組的改造提供參考依據(jù)。
[Abstract]:The 200MW steam turbine that was put into production in the early period of our country is limited to the design and manufacture technology at that time, which not only has low cylinder efficiency, but also has certain safety hidden trouble.Therefore, it is of great practical value and academic significance to revamp the flow passage of existing domestic 200MW steam turbine units.In this paper, the retrofit scheme of 200MW condensing steam turbine in Haibiewan Power Plant is studied, and a reasonable retrofit scheme is obtained, that is, the cascade of regulating stage nozzle adopts meridian contraction form, the static cascade of low pressure cylinder adopts bending and torsional static blade,The moving cascade adopts the efficient blade shape, the pressure grade partition adopts the welding way, the moving blade and the belt adopt the integrated structure, increases the number of the vane top steam seal teeth, increases the reaction degree of the last stage, the second stage root, and the last stage moving blade entering the steam side inlay the Si Tai Li alloy sheet.In addition, the structural strength, stiffness and vibration characteristics of key components are calculated, checked and optimized.The economic benefits of steam turbine units before and after revamping are analyzed and compared. After the revamping, the economic benefits of steam turbine units are obviously improved, the heat consumption is reduced by 617.2kJ/(kW HX, the efficiency is increased by 7.08, the coal consumption is reduced by about 24.57g/(kW h), and the standard coal is saved by 27862 tons per year.At the same time, due to the decrease of steam consumption and the decrease of flue gas quantity in the case of the same power generation, the wear of heating surface is reduced, the wear of ash removal and desulfurization equipment and related pipelines is also reduced, and the power consumption of each auxiliary machine is reduced, so that the power consumption of the plant is reduced.The problems after the revamping of the flow passage part of the unit are analyzed, such as the interference between the low pressure cylinder partition and the cylinder and the small axial clearance, and the corresponding solving measures are worked out to ensure the cutting accuracy by plasma turning on the cylinder shoulder.Cold welding process is used to reduce the deformation of the diaphragm.In a word, it is feasible and effective to reconstruct the flow passage of 200MW unit in Haibo Bay Power Plant.The theory and practice of the unit reconstruction can provide reference basis for the domestic thermal power unit transformation.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：F426.61;TM621

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭茂豐;劉環(huán)宇;侯建華;;200MW汽輪機(jī)通流部分技術(shù)改造與效果分析[J];包頭職業(yè)技術(shù)學(xué)院學(xué)報(bào);2010年01期

2 胡月紅;李曉波;李江鵬;;N100-90/535型汽輪機(jī)低壓缸通流部分改造淺談[J];電站系統(tǒng)工程;2011年03期

3 王柏仁;200MW汽輪機(jī)通流部分改造技術(shù)評(píng)析[J];湖北電力;2000年02期

4 趙景輝;;抽汽凝汽式汽輪機(jī)通流部分改造及效益分析[J];華北電力技術(shù);2006年10期

5 鄭承剛,穆大勇;50MW汽輪機(jī)通流部分的增容改造[J];河北電力技術(shù);2003年S1期

6 王建朝;;火電廠節(jié)能降耗措施分析[J];河北電力技術(shù);2009年01期

7 嚴(yán)于龍;;調(diào)整能源結(jié)構(gòu) 迎接低碳時(shí)代[J];宏觀經(jīng)濟(jì)管理;2010年03期

8 楊卓;毛應(yīng)淮;;電力行業(yè)的節(jié)能減排與低碳經(jīng)濟(jì)[J];中國環(huán)境管理干部學(xué)院學(xué)報(bào);2010年01期

9 李清;黃竹青;左從瑞;李亮;崔永波;;淺析汽輪機(jī)通流部分改造及效果[J];華中電力;2011年03期

10 劉維紅,于國強(qiáng);50MW汽輪發(fā)電機(jī)組增容改造[J];東北電力技術(shù);2005年01期

相關(guān)碩士學(xué)位論文 前7條

1 閆青;合缸300MW機(jī)組通流改造技術(shù)應(yīng)用效果評(píng)價(jià)[D];華北電力大學(xué)（北京）;2011年

2 葛兢業(yè);天電125MW汽輪機(jī)的現(xiàn)代化改造與性能試驗(yàn)研究[D];南京理工大學(xué);2003年

3 王玉武;200MW雙抽機(jī)組技術(shù)改造經(jīng)濟(jì)性分析及可靠性評(píng)價(jià)[D];華北電力大學(xué)（河北）;2007年

4 夏友才;200MW機(jī)組給水泵驅(qū)動(dòng)方式的研究與實(shí)踐[D];華北電力大學(xué)（河北）;2007年

5 丁銘;國產(chǎn)300MW汽輪機(jī)通流改造及電廠試驗(yàn)研究[D];上海交通大學(xué);2007年

6 楊端民;萊城電廠300MW機(jī)組大修前后熱經(jīng)濟(jì)性分析[D];華北電力大學(xué)（河北）;2009年

7 李順生;馬頭電廠#8汽輪機(jī)通流改造項(xiàng)目后評(píng)價(jià)研究[D];華北電力大學(xué)（河北）;2009年

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本文編號(hào)：1751171