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外文翻译--恒压供水变频器.DOC

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外文翻译--恒压供水变频器.DOC

CONSTANTPRESSUREWATERSUPPLYFREQUENCYCHANGERTHETRANSISTORFREQUENCYCHANGERNOTONLYOVERCAMEHASFORMERLYEXCHANGEDVELOCITYMODULATIONMANYSHORTCOMINGS,MOREOVERTHEVELOCITYMODULATIONPERFORMANCEMIGHTCOMPAREFAVORABLYWITHTHEDIRECTCURRENTMOTORVELOCITYMODULATIONPERFORMANCETHETHREEPHASEASYNCHRONOUSMOTORHASTHESERVICETOBECONVENIENT,MERITANDSOONPRICESMALLADVANTAGE,POWERANDROTATIONALSPEEDADAPTBREADTH,ITSFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYINTHEMINIATURIZATION,THELOWCOSTANDTHEREDUNDANTRELIABLEASPECTHOLDSTHEOBVIOUSSUPERIORITYTOTHEENDOFTHE80S,THEALTERNATINGCURRENTMACHINEFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYRAPIDLYDEVELOPSINTOAMATURETECHNOLOGY,ITWILLSUPPLYTHEALTERNATINGCURRENTMACHINETHELABORFREQUENCYALTERNATINGCURRENTSUPPLYTOTURNDIRECTCURRENTAFTERTHEDIODERECTIFICATION,AGAINBYCOMPONENTANDSOONIGBTORGTRMODULECOUNTERWILLTURNTHEALTERNATINGCURRENTSUPPLYWHICHTHEFREQUENCYMIGHTMOVE,WILLDRIVETHEELECTRICALMACHINERYBYTHISPOWERSOURCETOMOVEUNDERTHESPEEDCHANGECONDITION,ANDAUTOMATICSUITABLESTRAINLOADCONDITIONAFTERITCHANGEDINTHETRADITIONALINDUSTRYTHEELECTRICALMACHINERYTOSTARTONLYCANBYTHERATEDPOWER,DECIDETHEROTATIONALSPEEDTHESOLEMOVEMENTWAY,THUSACHIEVEDTHEENERGYCONSERVATIONGOALTHEMODERNFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYAPPLIESINTHEELECTRICPOWERWATERPUMPWATERSUPPLYSYSTEMBECAUSETHEFREQUENCYCONVERSIONVELOCITYMODULATIONHASTHEVELOCITYMODULATIONTHEPHYSICALCHARACTERISTICSWELL,EFFICIENCYHIGH,VELOCITYMODULATIONSCOPEWIDE,PRECISIONHIGH,ADJUSTINGCHARACTERCURVESMOOTH,MAYCONTINUALREALIZE,THESTEADYVELOCITYMODULATION,THEVOLUMESMALL,THEMAINTENANCESIMPLEISCONVENIENT,THEAUTOMATEDLEVELHIGHERASERIESOFPROMINENTMERITSBUTTIMEPEOPLESFAVORWHENITAPPLIESESPECIALLYINTHEAIRBLOWER,THEWATERPUMPANDSOONTHELARGECAPACITYLOAD,MAYOBTAINTHEENERGYCONSERVATIONEFFECTWHICHOTHERVELOCITYMODULATIONWAYSISUNABLETOCOMPARETHEFREQUENCYCONVERSIONVELOCITYMODULATIONSYSTEMMAINEQUIPMENTISPROVIDESTHEFREQUENCYCONVERSIONPOWERSOURCETHEFREQUENCYCHANGER,THEFREQUENCYCHANGERMAYDIVIDEINTOEXCHANGEDIRECTCURRENTTOEXCHANGETHEFREQUENCYCHANGERANDTHEEXCHANGEEXCHANGESTHEFREQUENCYCHANGERTWOBIGKINDS,ATPRESENTDOMESTICMOSTLYUSESHANDSOVERISSTRAIGHTHANDSOVERTHEFREQUENCYCHANGERHASBEENPUBLISHEDSINCETHEGENERALFREQUENCYCHANGER,THEFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYOBTAINEDTHEWIDESPREADAPPLICATIONINEACHDOMAINTHEFREQUENCYCONVERSIONMODULATESVELOCITYTHEPERMANENTWATERLEVELFEEDWATEREQUIPMENTBYITSENERGYCONSERVATION,SECURITY,HIGHQUALITYMERITANDSOONWATERSUPPLYQUALITY,CAUSEDOURCOUNTRYTOSUPPLYWATERTHEPROFESSIONTECHNICALEQUIPLEVELTOSTARTFROMTHEBEGINNINGOFTHE90STOEXPERIENCEALEAPTHECONSTANTPRESSURE,THEPERMANENTWATERLEVELWATERSUPPLYVELOCITYMODULATIONSYSTEMREALIZATIONWATERPUMPELECTRICALMACHINERYSTEPLESSSPEEDREGULATION,RESTSONWITHTHEWATERLEVELCHANGEREGULATORSYSTEMMOVEMENTPARAMETER,INTHEWATERCONSUMPTIONCHANGEREGULATORSYSTEMMOVEMENTPARAMETER,CHANGESWHENTHEWATERCONSUMPTIONMAINTAINSTHEHYDRAULICPRESSURETOBECONSTANTANDTHEWATERLEVELCONSTANTLYBYSATISFIESTHEWATERUSEDREQUEST,ISNOWMOSTADVANCED,THEREASONABLEENERGYCONSERVATIONWATERSUPPLYSYSTEMOBTAINEDTHEVERYBIGDEVELOPMENTINTHEPRACTICALAPPLICATIONALONGWITHTHEELECTRICPOWERELECTRONICTECHNOLOGYRAPIDDEVELOPMENT,THEFREQUENCYCHANGERFUNCTIONMOREANDMOREISALSOSTRONGFULLYUSESEACHKINDOFFUNCTIONWHICHINTHEFREQUENCYCHANGERSETS,TOTHEREASONABLEDESIGNFREQUENCYCONVERSIONVELOCITYMODULATIONCONSTANTPRESSUREFEEDWATEREQUIPMENT,REDUCESTHECOST,GUARANTEEDASPECTANDSOONPRODUCTQUALITYHASTHEEXTREMELYVITALSIGNIFICANCEINTHESHORTSEVERALYEARS,THEFREQUENCYCONVERSIONVELOCITYMODULATIONCONSTANTPRESSUREWATERSUPPLYSYSTEMEXPERIENCEDTHEDEVELOPINGPROCESSWHICHCONSUMMATEDGRADUALLY,THEEARLYTIMEHASPUMPEDTHEVELOCITYMODULATIONCONSTANTPRESSURESYSTEMTOPUMPONLYTHEVELOCITYMODULATIONSYSTEMTOREPLACEGRADUALLYALTHOUGHONLYPUMPSTHEVELOCITYMODULATIONSYSTEMDESIGNSIMPLERELIABLE,BUTBECAUSEONLYPUMPSTHEELECTRICALMACHINERYDEPTHVELOCITYMODULATIONTOCREATETHEWATERPUMP,THEELECTRICALMACHINERYOPERATINGEFFICIENCYLOWLY,BUTPUMPSTHEVELOCITYMODULATIONSYSTEMINVESTMENTMORETOSAVE,THEOPERATINGEFFICIENCYISHIGH,BYTHEACTUALPROOFISTHEMOSTSUPERIORSYSTEMDESIGN,VERYQUICKLYDEVELOPSINTOTHELEADINGPRODUCTTHESEMEN’SFREQUENCYCHANGERDESIGNLEVELCOMPARESWITHVARIOUSBRANDSFREQUENCYCHANGER,THEFUNCTIONISFORMIDABLE,IMPECCABLEIFAGAINCANFROMTHEDESIGNCONSIDERWILLSERVICECONVENIENTTOTHEFUTURE,THENATUREANDENHANCEDTHECOMPONENTSINTHEMANUFACTURESELECTIONTHEQUALITYISMOSTIDEALTHESEMEN’SFREQUENCYCHANGERRECTIFICATIONUNITPRESSURERESISTANCEIS1200VIFCANUSEPRESSURERESISTANCE1600VTHERECTIFICATIONUNIT,ITHOUGHTCANENHANCETHESTABILITYGREATLYANDREDUCETHEFAILURERATEGUARDSAGAINSTTHEDISTURBANCETHEMEASURETOWAITFORSTRENGTHENS,SEMEN’SFREQUENCYCHANGERSOMETIMESCANBUTCONTROLBECAUSEOFTHEDISTURBANCEQUESTIONTHEHOSTTHEBOARDORI/THEOPORTBURNTTHECONSTANTPRESSUREWATERSUPPLYSERIESFREQUENCYCONVERSIONVOLTMETERSISFORTHEAIRBLOWER,PUMPSKIND,CURRENTCAPACITYANDTHESPECIALPURPOSEFREQUENCYCONVERSIONVOLTMETERSTHEPRESSURECONTROLCHARACTERISTICSPECIALLYANDSOONAIRCOMPRESSORWHICHBUTDEVELOPSTHISAIRCRAFTTYPEHASTHEGENERALFREQUENCYCHANGERTHEBASICFUNCTIONTHISPRODUCTDESIGNHADMAINLYCONSIDEREDTHEENERGYCONSERVATIONANDTHEAUTOMATEDREQUEST,INSETSATTHEAUTOMATICENERGYCONSERVATION,PID,SIMPLEPLCANDFUNCTIONANDSOONRS485COMMUNICATIONCONNECTION,MAYFACILITATEANDPLC,THECOMPUTERORTHEMAINLINECARRIESONTHECOMMUNICATION,THECONVENIENTCUSTOMEROPERATIONANDTHEMONITORING,ATTHESAMETIMETHISCOMPANYALSOSPECIALLYDEVELOPEDONEKINDTOPROCESSTHECONSTANTPRESSUREWATERSUPPLYSPECIALLYTHECONTROLPANEL,MIGHTCONVENIENTLYBEUSEDTOGETHERWITHTHEFARBIOGRAPHYPRESSUREGAUGEFIRST,FREQUENCYCONVERSIONCONSTANTPRESSUREWATERSUPPLYCHARACTERISTIC1ST,THEFREQUENCYCONVERSIONCONSTANTPRESSUREFORTHEHYDROENERGYAUTOMATIC24HOURMAINTENANCESCONSTANTPRESSURE,ANDAUTOMATICALLYSTARTSTHERELAYPUMPACCORDINGTOTHEPRESSURESIGNAL,THESTEPLESSADJUSTMENTPRESSURE,THEWATERSUPPLYQUALITYISGOOD,COMPARESWITHTHETRADITIONALWATERSUPPLY,CANNOTCREATETHEPIPENETWORKTOBURSTANDTHEWATERCOCKRESONANCEEFFECT2ND,THESTARTISSMOOTH,REDUCESTHEELECTRICALMACHINERYWATERPUMPTHEIMPACT,LENGTHENEDTHEELECTRICALMACHINERYANDTHEWATERPUMPSERVICELIFE,HASAVOIDEDINTHETRADITIONALWATERSUPPLYIMPINGEMENTPHENOMENON3RD,USESTHEFREQUENCYCONVERSIONCONSTANTPRESSUREWATERSUPPLYPROTECTIONFUNCTIONCOMPLETELY,THEMOVEMENTISRELIABLE,HASOWESPRESSES,HASPRESSED,HASFLOWED,PROTECTIONFUNCTIONANDSOONTHEHEAT5TH,MAYACCORDINGTOTHEUSERNEED,CHOOSEEACHKINDOFATTACHMENTFUNCTION,FOREXAMPLETHEELECTRICALMACHINERYFIXEDTIMETAKESTURNS,FUNCTIONANDSOONDORMANCYSECOND,PRINCIPLEOFWORKTHEFREQUENCYCONVERSIONCONSTANTPRESSUREWATERSUPPLYSYSTEMUSESAPOTENTIOMETERHYPOTHESISPRESSUREALSOTOBEPOSSIBLETOUSEKNEADINGBOARDINTERIORHYPOTHESISPRESSURE,USESAPRESSURETRANSMITTERFEEDBACKIS420MAEXAMINESINTHEPIPENETWORKTHEPRESSURE,THEPRESSURETRANSMITTERSENDSINTHESIGNALTHEFREQUENCYCHANGERPIDRETURNROUTE,AFTERPIDRETURNROUTEPROCESSING,SENDSOUTAWATERVOLUMETOINCREASEORTHEREDUCEDSIGNAL,CONTROLSTHEMOTORROTATIONALSPEEDLIKEINCERTAINDELAYTIME,PRESSUREINSUFFICIENCYOROVERSIZED,THENDOESWORKTHEFREQUENCYTHROUGHPLC/THEFREQUENCYCONVERSIONCUT,CAUSESTHEACTUALPIPENETWORKPRESSURETOBECONSISTENTWITHTHEHYPOTHESISPRESSUREMOREOVER,ALONGWITHTHEWATERCONSUMPTIONREDUCTION,THEFREQUENCYCHANGERAUTOMATICREDUCTIONOUTPUTFREQUENCY,HASACHIEVEDTHEENERGYCONSERVATIONGOALTHIRD,APPLICABLESCOPEUSESTHEFREQUENCYCONVERSIONCONSTANTPRESSUREWATERSUPPLY,HASTHEHIGHLYEFFECTIVEENERGYCONSERVATION,THEPRESSURESTABLE,MOVEMENTRELIABLE,OPERATIONSIMPLE,INSTALLMENTCONVENIENT,OCCUPYINGALANDAREAOFFEW,THENOISEISLOW,DOESNOTHAVETHEPOLLUTION,INVESTSLOWLY,BENEFITHIGHERMERITISSUITABLESPECIALLYFOR1PLACETHEANDSOONGUESTHOUSE,OFFICE,APARTMENT,INHABITANTPLOTLIFEGIVESTHEHEATOFHYDRATIONWATERHEATINGSYSTEM2THEHIGHRISECONSTRUCTION,THELARGESCALECIVILCONSTRUCTIONFIREPREVENTIONGIVESTHEAQUEOUSSYSTEM3INDUSTRYANDMININGPRODUCTIONENTERPRISE4EACHKINDOFRUNNINGWATERFACTORY

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