泵与压缩机试题b(pump and compressor test questions b)

泵与压缩机试题b(pump and compressor test questions b)

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时间:2018-07-17

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1、泵与压缩机试题b(PumpandcompressortestquestionsB)1pumpandcompressortestinexergyvolumeBSharenotebindingPleasedonotontheleftsideofthelinePleaseanswertofNotinthepapersWriteandtestTryto.LetforAccordingtothecorrespondingmanagementProvisions.Department:Professional:Class:Fullname:No.:Scoresh

2、areScoresharenumberYiersansiwuliuqibajiushiscoreScoreTheexaminationtimefor120minutestotaloffourFFtestpapersof4pages.AchoiceThe30bigtopicLafeveryday3pointsin1,andcanimprovetheliquidconveyingmachineryisshowninthehead.A,aircompressor,centrifugalcompressor,pumpBC,centrifugeD2,centr

3、ifugalcompressorpowercomponentsisshowninthe.A,B,C,suctionimpellervolute,sealD3,thecentrifugalpumpperformancecurveisbythefactoryinLainCwaterconditionsobtainedbytesting.A,0B,4C,20D,30Semiopenimpellercentrifugalcompressor4,onlytheincreaseinthe.A,B,Cafterthefrontdiscdisc,leftandrig

4、htwheelDHighefficiency5,thepumpefficiencyisobservedinthefollowinggeneralmaximum%rangeofeverypoint.DeviceA,5B,7C,10D,156,canautomaticallyadjustthebalanceforceisshowninthe.A,B,Cbalancediscbalancedrum,balancetubeD,balanceblade7,hasshowninthecentrifugalcompressorperformancecurvemay

5、beunstableundercertainoperatingconditions.A,steepB,flatC,increasingD,humptype8,pistoncompressoractualoperatingcyclebyaprocessconsistinginla.A,1B,2C,3D,49,pumpoperationisstableandwhetheritcanbeusedthefollowingmethodtojudgethestabilityinthesharepointpumpperformancecurveoftheslope

6、isobservedinthetubeSloperoadperformancecurve.A,B,C,==D,10,acentrifugalcompressorimpellerwith6Kgasthroughthemachineisshowninthestageaftercompression.A,1B,3C,6D,8andtwotodeterminetheproblemrightshownmeyourFXinthewrongThe10bigquestionsobservedeveryday2pointsinF1,thepumpheadisaflui

7、dconveyingpumpunitweightflowfromtheinlettotheoutletoftheenergyincrement.InLa2,withthe"energy"theoremofEulerequationscanbeeasilyderived.InLaScoreshareScoreshare2scoreTheintersectionefficiencycurve3,characteristiccurveofpipelinecentrifugalcompressorandcentrifugalcompressorisworki

8、ngpoint.Exergyin4,pistoncompressorprovidesmoreliftthan

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