理论知识考核内容

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1、理论知识考核内容Annex1TheoreticalknowledgeassessmentcontentI.BasicKnowledge(1)definition,functionandworkingprincipleofsafetyvalve・(two)thetermofsafetyvalve1.nominaldiameter,nominalpressureandworkingpressure:2.applicabletemperature,applicablemedium,workingtemperatureandwo

2、rkingmedium;3.,theopeningheight,flowarea(throatarea),dischargearea,curtainarea,channeldiameter(throatdiameter);4.theoreticaldisplacement,actualdisplacement,rateddisplacement,equivalentcalculation,displacement,displacementcoefficient,rateddisplacementcoefficient:5

3、.settingpressure,dischargepressure,backseatpressure,sealtestpressure,backpressure(dischargebackpressureandadditionalbackpressure);6.allowsettingpressuredeviation;1.overpressure,openingandclosingpressuredifference;2.coldtestdifferentialpressure;3.frequencyhopping,

4、flutter,andblocking・(three)thebasicrequirementsandmechanicalcharacteristicsofthesealing,opening,dischargingandbackseatofthesafetyvalve.(four)byusingthemedia,nominalpressure,temperature,connectionmode,structure,sealingmaterials,workingprinciple,operatingcharacteri

5、stic,openingheight,pressurebalancevalve,onloadingclassificationknowledgeofsafety-valve.(five)thestructuralfeaturesandselectionconditionsofspringtype(fullclosed,semiclosed,opentype),levertype,staticweighttype,pulsetype(pilottype)andothersafety-valves・(six)safetyva

6、lvetypeprogrammingmethod・Two、safetyvalvedesignandmanufacturingknowledgeSafetyvalveshell,valveidentification,seat,springandotherkeypartsofthematerialselectionprincipleandthespringpressurelevelconcept・(two)themanufacturingprocessofkeypartsandcomponentsofthesafetyva

7、lve・(three)casting,forging,weldingprocessandrequirementsofshell.(four)machiningaccuracyandinfluenceofparts・(five)sealingsurfacesurfacing,surfacenondestructivetesting,machiningandgrindingmethodsandrequirements・(six)themanufacturingprocess,stabilityandperformancete

8、stofspring・(seven)safetyvalveassemblyproceduresandmattersneedingattention・(eight)thecontentsandmethodsofthesafetyvalvefactorytest・(nine)thewholeperformance(ty