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1、TorqueoverloadprotectionValveelectricdeviceisusedtooperatethevalveandwasoneofthevalvesconnectedtothedevice.Thedeviceisdrivenbyelectricity,theirmotionprocesscanbestroke,torque,ortocontrolthesizeoftheaxialthrust.Asthevalveshouldbetheworkofelectricaldevicecharacteri
2、sticsandutilizationdependonthetypeofvalves,fittingsandvalvesregulatetheworkofthepipelineorequipmentlocation.Therefore,controlvalveelectricdevicetherightchoice;considerthepreventionofoverload(workingtorquehigherthanthecontroltorque)hasbecomeessentialtotheoccurrenc
3、eofaring.Valveelectricdevicerightchoiceshouldbebasedon:1.Operationtorque:Operationtorqueistoselectthemainvalveelectricaldeviceparameters.Theoutputtorqueelectricactuatorvalveoperationshouldbethegreatestmomentof1.2~1.5times.2.OperationThrust:thehoststructureofMOTOR
4、IZEDVALVEACTUATORthevalveelectricdevice,therearetwo,oneisnotconfiguredthrustplate,thistimedirectlytotheoutputtorque;theotherisequippedwiththrustplate,andthistimetheoutputtorqueofthevalvestemthroughthethrustdisknutisconvertedtotheoutputthrust.3.Numberofoutputshaft
5、rotationcircle:valveelectricactuatoroutputshaftrotationthenumberoflapsandthevalvenominaldiameter,stempitch,threadthefirstfewrelated,accordingtoM=H/ZScomputing(where:Mfortheelectricalinstallationsshouldbetomeetthetotalnumberofrotatingring;Hofthevalveopeningheight,
6、mm;Stostemtransmissionthreadpitch,mm;Ztostemthenumberofscrewheads.)4.StemDiameter:Formulti-turntypevalvesforthenextshot,iftheelectricactuatorallowsthemaximumstemdiameterofthevalvestemcannotbedispensed,itcannotbeassembledintoelectricvalve.Therefore,theelectricalde
7、vicehollowoutputshaftdiametermustbegreaterthanspecifiedunderthevalvestemdiameter.Forsomerotaryvalves,aswellasmulti-turnvalvesinthedarkbarvalve,althoughwithoutconsideringtheadoptionofstemdiameter,butshouldalsotakefullaccountofthematchingstemdiameterandkeywaysize,s
8、othatworkcanbeassembled.5.OutputSpeed:valveKai,closedfast,easytoproducewaterhammerphenomenon.Shouldthereforebeunderdifferentconditionsofuse,choosetheappropriat
