KR500X泄压阀在长输管道中的应用姜海萍

KR500X225009。、、、。。。TU991C1000－4602201124－0072－03ApplicationofKR500XPressureReliefValveinLong-distanceWaterConveyancePipelineJIANGHai-pingZHENGQuan-xingYangzhouWaterSupplyCo．Ltd．Yangzhou225009ChinaAbstractThepressurereliefvalveisoneofthehydrauliccontrolvalveswhichcaneffectivelypreventwaterhammer．Thestructureofthepressurereliefvalveitsworkingprinciplecharacteristicsinstallationanddailymaintenanceareintroduced．Uptonownomaturetheoryhasbeenfoundabouttheselectionofthediameterofthepressurereliefvalves．HencetheapproachadoptedbyYangzhouFifthWaterPlantisasuccessfulpractice．Thewaterconveyancepipelinehasbeenrunningsmoothlysincethewaterplantwasputintooperationtwoyearsagowhichgreatlyensuresthesafetyofthecitywatersupply．Keywordslong-distancewaterconveyancepipelinewaterhammerpressurereliefvalve11。1Fig．1Schematicdiagramofpressurereliefvalve、。。。。。。。。·27·2724201112CHINAWATER＆WASTEWATERVol．27No．24Dec．2011。。。。220×104m3/d。222kmDN1600、DN1400、DN12000．47MPa4．7kgf/cm220×104m3/d。2Fig．2PipelinelayoutPL、vL、。PL/vL3PL/vL。①aDN160020×104m3/d0．47MPa。Qd=20×104m3/dPL=0．47MPaA=πD2/4=2．0m2vL=Qd/A=1．16m/svL/PL=0．25。3680mmDN700。②bDN120010×104m3/d0．28MPa。Qd=10×104m3/dPL=0．28MPaA=πD2/4=1．13m2vL=Qd/A=1．02m/svL/PL=0．37。3550mmDN700。3Fig．3Experiencechartforselectionofdiametersofpressurereliefvalves3KR500X＜1．0MPa1．0MPa。。。①②③0．1MPa·37·．watergasheat．comKR500X2724。4KR500X4.1①。②。③。④、。⑤。。4.2KR500X、O。5KR500X①。0℃60℃。②。。③。KR500X。④。KR500X。⑤。。622kmKR500X。KR500XDN700。KR500XKR500X。[e-mail]2011－06－17·47·2724．watergasheat．com