粉体料仓下料不畅的原因及解决方法李诚

·24·39李诚(,255400),。1。,,。,、,。1.1:()()。,,“”,,。,,“”“”。“”,,。。,。[1]:、、,。1.2θ(1),。,。。,θmax[2]:1θmax=(90°+-δ-arcsin(sinδ/sin))/2(1):,;δ,(°)。θθmax。1.3,()(),。。1.3.1,B。,B(2a);,B(2b);,B(L≥3B)(·25·200232c)。,[2]:BH(θ)·σ1/γ(2):B—,m;γ—,kN/m3;σ1—,kPa;H(θ)=(1+m)+0.01(0.5+m)θ(3):θ,(°);m;,m=1;,m=0。1.3.2,[3]:B1.15σ1/γ(4)21.4,(),()()。,。[4],,,。,,、。1.5。,,:(1)、;(2);(3)。22.1。、,,。,,,。,:;。。2.2,。。,。,,,,,,。,。。3,。,。3.1,,。:1):,;2):;3):、;4):,,。(下转39页)·39·20023,:①:,。②K2CO3:,。③:。。05A00105A005,,,05A001,。3,,5mm1Cr18Ni9Ti,,A132,。,,,,,,:,。,,。3.2,:1);2);3)。。3.2.11),。2)。3)。3.2.2,()。3.2.3。;。3.2.41)()。2)。。,,。4,,,。,,。,。,,,。1,,..,1999,20(4):122..:,1998:71,78-79,2213M.E.FayedL.Otten..,1992:3564,,,(上接25页)·3·Vol.39No.3AbstractSelectionofFireProtectorGongRenweiChinaHuanQiuChemicalEngineeringCo.Beijing,100029Theselectionofthefireprotectoristheproblemfacedinengineer-ingdesignandproductionsafetyintheplantsdealingwithpetrochemicalmaterial,petroleum,naturalgasandcombustiblegas.Inthisarticle,someselectionproceduresoffireprotectorwerepresented.Keywords:fireprotector,characteristic,safetyclass,selectionDesignandConstructionofFireProtectionDamLiMingShanghaiJianyinPropertyCo.LtdShanghai,200040LiMaoxingChinaTiancengChemicalEngineeringCo.Tianjin,300400Inthisarticle,thefunctions,volumecalculation,designandCon-structionofthefireprotectiondamwereintroduced,whichcanberef-erencedbytheengineers.Keywords:fireprotectiondam,function,design,constructionUltimateLoadAnalysisforCylinderofVesselsforChangingFlowDirectionMeiLintao,ChenZhaohui,SouBinan,YangGuoyiChinaNationalStandardizationCommitteeonPressureVesselsBeijing,100029Inthispaper,throughthestressanalysisforthecylinderofthevesselusedforchangingtheflowdirection,theapplicationandsignifi-canceoftheultimateloadmethodintheanalyticaldesignofthepressurevesselweredemonstrated.Byusingthismethod,theresultofstressanalysiscanbemoreapproachtherealstressdistribution.Infact,themethodistheapplicationoftheplasticanalysisstatedinJB4732inprac-ticalengineering.Itishopedthattheexamplepresentedinthispapercanbeusedasthereferenceinthestressanalysisdesign.Keywords:vesselforchangingflowdirection,ultimateloadanalysis,analyticaldesignTreatmentofProblemsinDesignofTitaniumMadePressureVesselsWangFeiLiaomngProvincePetrochemicalPlanandDesignInstituteShenyang,110003LinYingShenyangPassTitaniumEquipmentCo.Shenyang,110000BasedontheaddendaforaddingcolormetalmaterialinGB1511999andwiththeproblemsinthedesignofthepressurevesselsandheatexchangersmadebytitanium,inthisarticle,someaspectsneededtoaccountforinthedesignoftitaniummadepressurevesselsweredis-cussed.Keywords:designoftitaniummadepressurevessel,designdata,weldstructure,heattreatmentTreatmentofSealLeakageinHighPressureFlangeDaiXinxiHunanDachengzhiNitrogenGroupCo.LtdLengsbuijiang,417506Thestructureandoperationoftheringgasketusedinthehighpressureflangesealwerebrieflystatedinthisarticle.Basedonthecauseoftheleakage,themethodsofprotectingleakagefromthediffer-entaspectsofvibration,assembly,theoperationandthematerialofthepipingwereintroduced.Then,basedonthedamageofthesealcompo-nents,the-methodsforprotectingleakagebyuseofsealcomponentrepairandringgasketimprovementwereproposed.Keywords:highpressureflange,ringgasket,leakagereducing,leakageremovingDesignandApplicationofFlashEvaporationGasRemovalEquipmentLiuDianyuHeilongjiangProvinceDairyMachineryFactoryAnda,151400Notlikeliquidinotherevaporationequipment,doestheliquidintheflashevaporationgasremovalequipmentevaporatebyitselfardnoheatingsurfaceisneeded.Inthisarticle,withtheequipmentusedfor487.8kg/hproductionofthemilk,thedesignandapplicationoftheflashevaporationgasremovalequipmentwasintroduced.Keywords:flashevaporationgasremoval,equipment,structure,designCausesandSolvingMeasuresofDischargeBlockinginHopperforPowderLiChengResearchInstitute,QiluPetrochemicalCo.Zibo,255400Inthisarticle,fromtheaspectsofdesignandproduction,thecausesofthedischargeblockingwereanalyzed.Inaccordancewiththesecauses,themethodsofprotectingdischargeblocking,then,wereproposed.Keywords:powder,hopper,dischargeblocking,foulingOptimumDesignofHeatExchangerwithMixedBundleofInclined-pinFinThbesFangJiangming,MaXiaoming,QianSongwenSouthChinaUniversityofScienceandTechnologyGuangzhou,510641Throughintroducingtheoptimumanalysistheoryandthepropertyexperimentresearchforthestructureoftheheatexchangerswiththemixedbundleofinclined-pinfintubes,thecomparisonoftheschemesofusingtheinclined-pinfintubesandsmoothtubeswascarriedoutinthispaperbyuseofthesemi-empiricalequationfromtheresultsoftheoreticalanalysisandexperiment.Theoptimumdesignschemewas,then,obtained.Thisschemenotonlycanreducetheinvestmentoftheequipment,butalsocanlowthecostoftheoperation.Keywords:inclined-pinfin,heatexchanger,mixedbundle,optimiza-tion,enhancedheattransferCharacteristicAnalysisofOilandGasCombustorCalXiaojun,XuYuanBeijingInstituteofPetrochemicalTechnologyBeijing,102600Thestructureofoilandgascombustorwasintroducedinthisarti-cle.Theperformanceofthecombustorwasanalyzedaswell.Theresultoftheanalysisisvaluableinenhancingtheheatefficiencyoftheheatingfurnace.Keywor