丹江口水電廠機(jī)組增容改造研究

1、華中科技大學(xué)碩士學(xué)位論文丹江口水電廠機(jī)組增容改造研究姓名：曾凡師申請學(xué)位級別：碩士專業(yè)：動力工程指導(dǎo)教師：韋彩新20040430華中科技大學(xué)碩士學(xué)位論文Abstract‘Thelife—spanofthemachinery—electricalequipmentsofhydropowergeneratingstationiscommonly2030yearswhichmaybelessbecauseofpoormakingquality

2、orbadmakingmaterial，Inordertomakefulluseoftheoldhydropowerstationsprolongingthelifeofstationequipments，manyresearcheshavebeendoneontherenovatingandreconstructingofoldhydropowerstationsUnitedstatesofAmerica，Canada，Norwaya

3、ndRussiahaverenovatedandreconstructedsomegreathydropowergeneratingstationsgaininggreateconomybenifet，andaccumulatedlotsofexperienceInourcountrytherearesomegreathydropowergeneratingstationsbuiltin1970swhichhavebeenputinto

4、useformorethan20yearsNowandthentherearevariousfaultsoccurringintheseoldhydropowergeneratingstation，SOourcountryhaveattachedimportancetotherenovatingandreconstructingofoldhydropowergeneratingstationsYunfeng，Xinanjiang，Zex

5、iandDongjianghydropowergeneratingstationshavesuccessfullyreconstructedtheirhydropowerturbinegeneratingunits，gaininglotsofexperiencesLimitedbythetechnicallevelofthetime，theparametersoftheoldhydropowerstationswererelativel

6、ybehindthetimes，forexamples，before30years，themaximummodelefficiencyoftheturbineswasabout90％，andthemaximumprototypeefficiencywasabout92％；thecorrosioncoefficientofthegeneratingunitswasbig，waterpowerstabilityofthegenerating

7、unitswerebad；aswellasthemakingmaterialandthemachiningquantityoftherunnerwerepoorButnowthemaximummodelefficiencyoftheturbinesisabout(94—95)／0，andthemaximumprototypeefficiencywasabout(9697)％；thecorrosioncoefficientissmall；

8、theunitfluxofthemodelisbig，andSOwiththesamerunnerdiameterastheoldone，theunitnowcangeneratepowermore(10—15)％，even20％，thantheoldunitFortheoldhydropowergeneratingstationswiththeprecedingproblems，therenovatingandreconstructi

9、ngmethodisusuallyenhancingthepoweroftheunitsButtherearesomestationswhichneedtobereconstructedbecauseoftheimpropermodeloftherunner，toogreatchangeofthewaterconditionandtheseverevibrationoftheunits，forexamples，theNo1unitoft