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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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离散隔板式迷宫叶顶冷却效率试验分析
, PP. 38-42
Keywords: 燃气轮机,动叶叶顶,迷宫结构,间隙高度,气膜冷却
Abstract:
为减小涡轮机动叶顶部间隙泄漏造成的气动损失、提高叶顶冷却效率,提出在凹槽叶顶离散排布小隔板迷宫。根据某涡轮机动叶结构,设计了迷宫叶顶气膜冷却效率试验台,通过稳态液晶技术测量了间隙叶高比分别为1.0%,2.0%,3.0%和吹风比分别为1.0,1.5,2.0时隔板迷宫叶顶和凹槽叶顶的气膜冷却效率。结果表明:2种叶顶结构的平均冷却效率均随着叶顶间隙高度的增加而减小;在某间隙高叶比和吹风比范围内,隔板迷宫叶顶冷却效率最多比凹槽叶顶冷却效率高出63%;隔板迷宫显著扩大了叶顶的冷却范围,提高了冷却效率,使冷却效率的分布更加均匀。
| [1] | 黄力森,陈红英.m701f型燃气轮机冷却空气系统[j].热力发电,2006,35(10):54-59.huanglisen,chenhongying.thecoolingairsystemofm701ftypegasturbines[j].thermalpowergeneration,2006,35(10):54-59.
|
| [2] | chyumk,moonhk,metzgerde.heattransferinthetipregionofgroovedturbineblades[j].journalofturbomachinery,1989,111:131-138.
|
| [3] | wheelerps,maryq.tipleakagelossesinsubsonicandtransonicblade-rows[c].asme2011turboexpo:turbinetechnicalconferenceandexposition.vancouver,britishcolumbia,canada,gt-2011-45798,2011.
|
| [4] | palafoxp,oldfieldmlg,irelandpt.bladetipheattransferandaerodynamicsinalargescaleturbinecascadewithmovingendwall[j].journalofturbomachinery,2012,134:021020.
|
| [5] | wheelerps,atkinsnr,hel.turbinebladetipheattransferinlowspeedandhighspeedflows[j].journalofturbomachinery,2011,133:041025.
|
| [6] | shyamv,ameria.comparisonofvarioussupersonicturbinetipdesignstominimizeaerodynamiclossandtipheating[c].asme2011turboexpo:turbinetechnicalconferenceandexposition.vancouver,britishcolumbia,canada,gt2011-46390,2011.
|
| [7] | 林汝谋.工业燃气轮机发展的关键技术[j].热力发电,1999,28(1):26-28.linrumou.keydevelopmentsofindustrialgasturbine[j].thermalpowergeneration,1999,28(1):26-28.
|
| [8] | bunkerrs.axialturbinebladetip:function,design,anddurability[j].journalofpropulsionandpower,2006,22(2):271-285.
|
| [9] | 张永军,王会社,王文三,等.无导叶对转涡轮高压动叶叶尖开槽的研究[j].工程热物理学报,2009,30(3):402-406.zhangyoungjun,wanghuishe,wangwensan,etal.aninvestigationonaerodynamicperformanceofavanelesscounter-rotatingturbinewithrecessedhigh-pressurerotortips[j].journalofengineeringthermophysics,2009,30(3):402-406.
|
| [10] | zhangq,hel.overtipshockwavestructureanditsimpactonturbinebladetipheattransfer[j].journalofturbomachinery,2011,133:041001.
|
| [11] | zhangq,dowddo,hel.transonicturbinebladetipaerothermalperformancewithdifferenttipgaps_parti:tipheattransfer[j].journalofturbomachinery,2011,133:041027.
|
| [12] | rahmanmh,kimsi,hassani.effectofinlettemperatureuniformityandnonuniformityonthetipleakageflowandrotorbladetipandcasingheattransfercharacteristics[j].journalofturbomachinery,2012,134:021001.
|
| [13] | krishnababusk,hodsonhp,boothgd.aerothermalinvestigationoftipleakageflowinafilmcooledindustrialturbinerotor[j].journalofturbomachinery,2010,132:021016.
|
| [14] | gaozh,narzaryd,mhetrass.effectofinletflowangleongasturbinebladetipfilmcooling[j].journalofturbomachinery,2009,131:031005.
|
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