資源描述：
《_大型熱電聯(lián)產(chǎn)機(jī)組高背壓供熱改造全工況熱經(jīng)濟(jì)分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第37卷第4期電力建設(shè)Vol.37，No.42016年4月ElectricPowerConstructionApr．，2016大型熱電聯(lián)產(chǎn)機(jī)組高背壓供熱改造全工況熱經(jīng)濟(jì)分析萬燕，孫詩夢，戈志華，何堅(jiān)忍(電站設(shè)備狀態(tài)監(jiān)測與控制教育部重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué))，北京市102206)摘要:抽凝供熱機(jī)組抽汽參數(shù)往往高于熱網(wǎng)所需，熱損失大。高背壓供熱機(jī)組利用排汽余熱供熱，增加供熱能力，減少供熱抽汽量。單轉(zhuǎn)子運(yùn)行和雙轉(zhuǎn)子互換是大型汽輪機(jī)高背壓供熱改造的2種主流方式，為研究不同方式的經(jīng)濟(jì)性和適用性，以某350MW機(jī)組為例，采用Ebsilon仿真軟件建
2、立高背壓供熱汽輪機(jī)變工況計(jì)算模型。結(jié)合單耗理論進(jìn)行不同改造方式下供熱季與非供熱季經(jīng)濟(jì)性及能耗對(duì)比。結(jié)果表明:和單轉(zhuǎn)子方式相比，雙轉(zhuǎn)子互換方式在供熱季發(fā)電量多200萬kW·h，平均發(fā)電煤耗低0.24g/(kW·h)，最大供熱量少6.48MW，非供熱季其效率高于單轉(zhuǎn)子方式。但考慮到雙轉(zhuǎn)子互換方式供熱季優(yōu)勢并不明顯，且每年需要2次更換轉(zhuǎn)子，因此對(duì)于大型熱電聯(lián)產(chǎn)機(jī)組高背壓供熱改造首選單轉(zhuǎn)子方式，以降低成本。關(guān)鍵詞:熱電聯(lián)產(chǎn);供熱改造;高背壓;單轉(zhuǎn)子;雙轉(zhuǎn)子互換;全工況Thermo-EconomicAnalysisofHighBackPressu
3、reHeatingＲetrofitforLarge-ScaleCogenerationUnitunderFullConditionWANYan，SUNShimeng，GEZhihua，HEJianren(KeyLaboratoryofConditionMonitoringandControlforPowerPlantEquipmentofMinistryofEducation，NorthChinaElectricPowerUniversity，Beijing102206，China)ABSTＲACT:Extractionsteampar
4、ametersofextractioncondensateheatingunitareoftenhigherthantheheatingnetworkrequired，whichresultedinagreatlossofheat．Highbackpressureunitmakesuseofexhaustheatforheating，thusincreasingheatingcapacityandreducingheatingsteamextraction．Therearetwomainmethodsofhighbackpressure
5、heatingretrofitforlargesteamturbine，whicharesingle-rotormodeanddouble-rotorinterchangemode．Forthestudyofdifferentformsofeconomyandapplicability，takinga350MWunitasanexample，thispaperconstructsanoff-designcalculationmodelofhighbackpressureheatingturbineusingEbsilonsimulati
6、onsoftware．Wecomparativelyanalyzetheeconomicefficiencyandenergyconsumptioninheatingseasonandnon-heatingseasonundertwomodesbasedonthetheoryofunitfuelconsumption．Theresultsshowthatinheatingseason，theelectricityoutputofdouble-rotorinterchangemodeis2000MW·hhigher，theaveragec
7、oalconsumptionrateis0.24g/kW·hlowerandthemaximumheatingcapacityis6.48MWlowercomparedwiththatofsinglerotormode．Innon-heatingseason，theexergyefficiencyofdouble-rotorinterchangemodeisbetterthanthatofsingle-rotormode．However，theadvantageofdouble-rotorinterchangemodeinheating
8、seasonisnotobviousanddouble-rotorinterchangemoderequiresreplacingrotortwiceayear．Therefore，inordertored
