600MW超临界机组汽动锅炉给水泵水动力及临界转速的分析与计算的综述报告AbstractInthisreport,thewaterdynamicsandcriticalspeedanalysisandcalculationforthe600MWultra-supercriticalunitsteamboilerfeedpumparereviewed.First,thebasicprinciplesandparametersofthesteamboilerfeedpumpsystemareintroduced.Next,thecalculationmethodandformulaforcalculatingthecriticalspeedofthefeedpumprotorarediscussedindetail.Theimportanceofwaterdynamicsinthesystemisdiscussed,andthefactorsaffectingwaterresistanceareanalyzed.Finally,thereportdiscussesthemeasuresthatcanbetakentoreducewaterresistanceandpreventcriticalspeedsfromoccurringinthesystem.IntroductionThesteamboilerfeedpumpisanimportantcomponentinapowerplant,responsibleforprovidinghigh-pressurewatertothesteamboiler.Thewaterdynamicsandcriticalspeedofthefeedpumpsystemareimportantfactorsthatneedtobeconsideredduringthedesignandoperationoftheplant.The600MWultra-supercriticalunitsteamboilerfeedpumpisacomplexsystem.Ifthepumprotoroperatesataspeedclosetoitscriticalspeed,itmaycausevibrationanddamagetothepump.Therefore,itisnecessarytoanalyzethewaterdynamicsandcriticalspeedofthefeedpumpsystemandtakeeffectivemeasurestopreventpotentialproblems.BasicprinciplesandparametersofsteamboilerfeedpumpThesteamboilerfeedpumpsystemisdesignedtoprovidehigh-pressurewatertothesteamboiler.Thesystemconsistsofthefeedpump,theturbine,andthecondenser.Thefeedpumpisdrivenbyasteamturbine,whichispoweredbythesteamgeneratedbytheboiler.Thehigh-pressurewaterispumpedfromthefeedwatertanktothesteamgenerator,whereitisheatedtoproducesteam.Thesteamisthenusedtodrivetheturbineandgenerateelectricity.Theparametersofthefeedpumpsystemincludetheflowrate,pressure,andspeedofthewater.Theflowrateofthewaterisdeterminedbythepoweroutputoftheplantandthespecificenergyconsumptionofthefeedpump.Thepressureofthewaterisdeterminedbythepressureofthesteamintheboilerandthepressuredropinthefeedpump.Thespeedofthepumprotorisanimportantfactorthataffectsthewaterdynamicsandcriticalspeedofthesystem.Calculationmethodandformulaforcriticalspeed