单螺杆泵设计及特性试验研究

沙毅白小榜李金磊马新华王晓英江苏大学,镇江,212013:对单螺杆泵特性及相似理论的应用进行了探讨通过分析水力几何系数12及比转速ns对泵性能曲线影响的对比试验,阐述泵性能变化规律推导出泵螺杆直径D导程T和偏心距e的计算公式在归纳分析优秀水力模型基础上,运用数值分析方法拟合出系数12及泵容积效率V计算公式,从而推出一套完整的单螺杆泵设计方法通过设计实例验证了该设计方法具有较高的准确性和实用性,并提出了提高螺杆泵性能的措施:;;;:TE933.3:1004132X(2008)05052204ExperimentalResearchontheDesignandPerformanceofSingleScrewPumpShaYiBaiXiaobangLiJinleiMaXinhuaWangXiaoyingJiangsuUniversity,Zhenjiang,Jiangsu,212013Abstract:Thesinglescrewpumpperformanceandthesimilaritytheoryapplicationwerestudied.Thepumpperformancevariationprincipleswereconductedbyanalyzingtheinfluenceofhydranlicstructurecoefficients1and2,specificspeednsonperformancecurves.ComputationalformulaeofscrewdiameterD,screw-pitchandeccentricityewerededuced.Basedonthesummaryofexcellenthydraulicmodels,numericalanalyseswereappliedtofitouttheformulaeforcoefficients1and2,pumpvolumeefficiencyV,whilethesinglescrewdesignmethodwasbuilt.Theexampledesigncasesprovethatthedesignmethodproposedhereinisofhighaccuracyandpractice,anditcanembodysomemeasurestoimprovethescrewpumpperformance.Keywords:screwpump;design;performance;test;numericalcalculation:20070109:(50476068)0引言,,,,,[16],,12V,1单螺杆泵结构及性能参数,1.11[7]1,,,,1.21.2.1():52219520083qV=240eDTnV(1),qV,m3/h;e,m;D,m;T,t2,m;n,r/min;V(pm),:qVpqVm=240epDpTpnpVp240emDmTmnmVm=L3pnpVpL3mnmVm(2)(2),,:1=TD2=Te1.2.2,T,piHpi04~06MPa(NR)(NBR),H=50m-(qVTHT),,qVT,,,qVHqVH;(qVP),,qV=0Pmax,,,hf=pi/(g)hf=v2/(2g),,,,v,H=kv2,,k,,1.2.3,n=200~3000r/minns=30~300;ns=7~30;,ns=1641[8]ns=15~301.2.4,GB906488[9]:,[4]:(),,:,,,,,,(),30min,()=-07~12mm45,Dh10~Dh122单螺杆泵性能曲线的特点2.1qVHqVP,18*4,,:qV=qVqVr,H=HHr,P=PPr,qVrHrPr23qVH,qVP1.QGD1.2500.37,ns=9.95,1=4.71,2=25.402.QGD2.5500.55,ns=1441,1=4.78,2=28.673.QGD2.7500.75,ns=15.18,1=4.88,2=30.674.QG55011,ns=20.45,1=5.55,2=33.892qVH2.21:ns,12,qVH,qVP,,5231nsqV(m3/h)H(m)n(r/min)(%)P(kW)D(mm)T(mm)e(mm)12V(%)17.140.61100/2285053.00.3711502.04.5525.0071.12*9.951.1850.45285048.70.3714662.64.7125.4071.83*14.412.6352.52285068.50.5518863.04.7828.6774.5414.479.8750.00148258.03.00341666.04.8427.6782.25*15.182.6949.75285068.30.7519923.04.8830.6774.6617.7814.3552.30148665.34.00402006.05.0033.3383.87*20.455.1851.75285067.31.10221223.65.5533.8979.2824.427.0850.30285063.21.50231404.06.0935.0080.41.QGD1.2500.37,ns=9.95,1=4.71,2=25.402.QGD2.5500.55,ns=1441,1=4.78,2=28.673.QGD2.7500.75,ns=15.18,1=4.88,2=30.674.QG55011,ns=20.45,1=5.55,2=33.893qVP3单螺杆泵水力设计计算方法3.1qVHn(1):D=32qV24021nV(3)T=312qV240nV(4)e=31qV24022nV(5)[4]12:1135;20235M:3151,12V:1=6.5316-1.88001-ens-20.15302.5660(6)2=e3.15400+0.01000ns+0.00033n2s(7)V=0.006ns+0.659n=3000r/min0.005ns+0.749n1500r/min(8),nsTeH,L/tL/T,[7]3.2,,4MO[7]x=esin+D2siny=ecos+D2cosz=t2(9)4(9),[10]5,4单螺杆泵设计方法应用实例4.12QGD1.8500.501,455241952008352QGD1.8-50-0.50qVr(m3/h)1.8(ns)12.37D(mm)16.816Hr(m)5014.556T(mm)76.575nr(r/min)2850227.888e(mm)2.692.7(%)56V(%)0.733L(mm)10236QGD1.8500.50,3QGD1.8-50-0.50qV(m3/h)H(m)n(r/min)P(kW)(%)11.51260.2528950.46054.0021.65655.9729030.44756.6031.72853.7229050.43857.7941.80050.8529120.42658.5051.98042.6229220.38859.3262.12434.2729330.34657.281.qV-2.qV-H3.qV-P6QGD1.8500.504.2[4]4,De[4],54qV(m3/h)40p(MPa)0.6(ns)6.632H(m)61.1614.74.642n(r/min)37722725.402(%)56V(%)0.850.782NPSHr(m)4.5D(mm)85.9858787P(kW)15T(mm)404400405400e(mm)14.91516165L=450mm,L=450mm82mm,85mmA()B()C()D=858mm,e=15.25mmD=83.6mm,e=15.5mmD=83.1mm,e=15.5mmp=06MPa,qV=427m3/h,NPSHr=412m,P=927kW,=7594%;p=05MPa,qV=433m3/h;p=03MPa,qV=4461m3/hp=06MPa,qV=175m3/h;p=05MPa,qV=20867m3/h;p=03MPa,qV=29133m3/hp=06MPa,qV=110m3/h;p=05MPa,qV=127m3/h;p=03MPa,qV=177m3/h45,,,D=87mm,e=16mm,5结束语(1),,(2):[1],,.[J].,2005,26(3):118122.(530)525,10SEM11SEM4结论,,,,,,,,,:[1]NaotakeM,HiromichiM,NagaoS.DevelopmentofanElectricalDischargeDrillingDevicebyUsingaNewMethodforDirectDriveofElectrode[J].JournaloftheJapanSocietyofPrecisionEngineering,1992,58(12):20632068.[2]KatsushiF,NaotakeM,ToshiroH.DirectDriveMechanismofEDMElectrodeUtilizingEllipticalMovement[J].JournaloftheJapanSocietyofPrecisionEngineering,1995,61(5):672676.[3]LiY,GuoM,ZhouZY,etal.MicroElectroDischargeMachinewithanInchwormTypeofMicroFeedMechanism[J].JournaloftheInternationalSocietiesforPrecisionEngineeringandNanotechnology,2002,26:714.[4],,.[M].3.:,2004.[5]KuniedaM,FuruoyaS.ImprovementofEDMEfficiencybySupplyingOxygenGasintoGap[J].AnnalsoftheCIRP,1991,40(1):215218.[6]YuZY,MasuzawaT,FujinoM.Micro-EDMforThree-dimensionalCavities-DevelopmentofUniformWearMethod[J].AnnalsoftheCIRP,1998,47(1):169172.():张勇,,197710赵航,,1970张广玉,,1963王振龙,,1963赵万生,,1957(525)[2].[J].,1996,16(2):4547.[3],,,.Moyno[J].,2000,21(4):8589.[4],,.[J].,1999(3):1925.[5].[J].,1995(5):310.[6]SavethKJ.TheProgressingCavityPump:PrincipleandCapabilities[J].SPE,1998,4(2):1424.[7].()[M].:,2001.[8],,,.[J].,1999,28(2):3032.[9].GB9064-88[S].19880405.[10],.[J].,2006(2):3132.():沙毅,,19613250白小榜,,1982李金磊,,1982马新华,,1956王晓英,,198053019520083