高压筒式锅炉给水泵介绍

PRODUCTSFORTHEPOWERMARKETShanghaiPowerEquipmentManufactureFactory(Main)Co.,Ltd.火力发电厂锅炉强制循环泵锅炉燃油供给/传输/前置泵高加除氧器低加高加疏水泵锅炉给水泵低加疏水泵发电机冷却塔循环水泵水塔补充泵水源凝结水泵前置泵辅助循环水泵补充泵冷凝器冷却水池汽机火力发电厂•FLOWSUPTO3,000CuM/Hr流量最大可达3,000m3/h•HEADSUPTO3,950m扬程最高可达3,950m•RUNNINGSPEEDSUPTO8,000RPM最高运行速度可达8,000r/minOPERATINGEMPERATURESTO230DegC.运行温度可达230℃DESIGNDUTY使用范围SPEMPumps–BoilerFeedPumps12001400180020002500300035004000500300100015002000300025003500Qinm3/hSPEMPumps–BoilerFeedPumps上电修–锅炉给水泵SPEMpumps-extendedoperatingrangetomeetmarketneeds-improvedefficiency-highavailabilityimprovedmaterialsforbetterlifeimprovedrotor-dynamicsandlowervibration-easiertomaintain上电修给水泵主要特点:规格齐全,满足各种需要效率高可靠性高－选用优质材料,适于长期运行－运行稳定性好易于维护MultistageBarrelPumps多级筒式泵boilerfeedwaterpumpforFossilPowerGeneration火电厂用锅炉给水泵SPEMPumpsleadsthewayinbarreldesignusingdiffuseraswellasvolutetechnologyforPower,Oil&GasandHPIapplications.上电修泵结合扩压器及涡壳技术，采用筒式结构，广泛应用于电力、石油和天然气，以及化工领域EPRIResearchOrderRP1884-10Systeminteraction系统影响Rotordynamics转子动力学研究Cavitationstudies汽蚀性能研究Hydraulicstudies水力性能研究Inputincurrentdesign应用于现代设计BoilerFeedPumpEPRIResearchOrder锅炉给水泵EPRI研究成果的应用100300500-15-10-50nq33nq26nq22Functionofincreasedlabyrinthgapsfordifferentspecificspeed不同比转速下泵内部间隙与效率的关系100%150200250DropinEfficiencyDeltaeta%LabyrinthgapLeakage%NewRecommendedOverhaulWorn推荐检修磨损量Max.OperatingLimitWorn最大运行极限磨损量Normaloperatingrange正常Danger危险Forbiddenrange禁止HigherEfficiency高效率的给水泵效率降低泄漏间隙PDIBalanceReturnLine平衡鼓泄漏回路Pressure压力HighLowBoosterpump前置泵Boilerfeedpump给水泵BalanceReturnLine平衡鼓泄漏回路Minimumflowline最小流量回路Deaerator除氧器MainDesignFeaturesofBoilerFeedPumps锅炉给水泵主要设计特点Fullpulloutcartridgeforrapidchangeover整抽式芯包，更换方便快速Bolteddeliverycoverwithmetaltometallocationforoptimumalignmentofbearinghousing螺栓连接的出口端盖精确定位，利于轴承室的对正Nozzlesacceptinghighloads牢固的出水口可承受较高的负荷Guidekeyandcentrelinepumpfeetensurehotalignment导向键和中心线支撑确保泵受热状态下的对中Forgedbarrelcasingtoacceptthermalshocksandtransientconditions锻造筒体可承受热冲击和瞬间变化PressureRetainingPartsDesign压力部件设计Analysedwithprovencodes:•GermanvesselcodeAD,standard•ASMEsectionVIII,Division1,option•FEforselectedcases成熟可靠的设计准则:•德国压力容器设计准则AD，（标准）•ASMEsectionVIII,Division1,（可选）•有限元分析FEmodel有限元模型Advantage•provencodesprovidehighreliability•hydrotest(1.5xor1.3xpD)ofeachpressurecasingprovideshighsafety优点：•成熟的设计准则保证高可靠性•1.5或1.3倍工作压力的水压试验确保高安全性PureGraphiteSealRings•upto1000bar•upto300°C纯石墨密封圈•最高压力1000bar•最高温度300°CAdvantage优点•lowgasketseatingloadrequired较小的密封垫预紧力•fullyconfinedgasket全内置的密封垫•metaltometalface金属对金属表面接触StaticSeals静密封KickerStage增压级DoubleSuctionImpeller双吸叶轮IntermediateTakeOff中间抽头MechanicalSealwithIntegralCooler带内置冷却器的机械密封FixedThrottleBush迷宫密封DesignOptions可选设计IntermediateTake-off中间抽头Advantagehighflexibliltyofdesign优点：设计的高灵活性Intermediatetake-offfrom1stor2ndstage,standardfrom3rdstage,Possible第一级或第二级出口的中间抽头（标准）第三级出口的中间抽头也是可以的ImpellerandDiffuserDesign叶轮和导叶设计Thickshrouds厚实的叶轮盖板Continuouschanneldiffuser连续流道的导叶Precisioncastings精密铸造的叶轮和导叶AdvantagePrecisioncastings•highefficiency•smallhydraulicunbalanceThickshrouds•highstrengthforhighhead•naturalfrequencyawayfromresonancethusavoidingshroudbreakage•Continuouschanneldiffuser•highefficiency优点精密铸造的叶轮和导叶•高效率•较小的液力不平衡厚实的叶轮盖板•高强度适应高压头•自振频率远离激振频率避免叶轮开裂连续流道的导叶•高效率RotorDesign转子设计Shrunkoncoupling,oilpressfit,parallelsteppedortaperfit油压套装式联轴器Shrunkonbalancedrum,oilpressfit油压套装式平衡鼓Shrunkonthrustcollar,oilpressfit油压套装式推力盘Shrinkdiskformechanicalsealsleeve机械密封套筒用紧缩环Impellersareshrunkon,havekeysfortorquetransmissionandusesplitringforthrustloading套装叶轮，用键传递扭矩，中分卡环承受轴向负荷Advantage•shrunkonpartsallowforhighrotorbalancingquality•shrunkonpartsavoidfrettingcorrosionandminimizestressconcentrations•shrunkonpartsavoidloosepartsonshaftduringoperationandresultinlowervibration优点•套装部件可保证较高的转子平衡质量•套装部件可避免腐蚀，最大程度地减小应力集中•套装部件可避免轴上部件运行时松动，转子振动较小ShaftSealWithSingleMechanicalSeal机械密封AdvantageMechanicalseal•highpumpefficiencyAirbarrierandthermosleeve•Insulateshotandcoolareathusreducesthermalstratification•avoidsshaftbendingduetothermalstratificationCoolingjacket•keepselastomersealscoolduringstand-still优点机械密封•较高的泵效率空气隙和隔热套•热侧和冷侧隔开，减少热分层•避免了由于冷热不均而引起的热分层冷却套•静态时保持密封冷却Airbarrier空气间隔Coolingjacket冷却套Thermosleevewithairgap带气隙的隔热套Mechanicalseal机械密封Hot(~180°C)热侧cool(~60°C)冷侧MechanicalSeals机械密封冷却Air-filledgaps空气间隔Coolingwater冷却水Sealcirculation循环密封水ShaftSealWithFixedThrottledBushing,Option迷宫密封Bleed-offforhighsuctionpressures,withoutbleed-offforlowsuctionpressures高吸入压力时排出；低吸入压力时无排出Coldcondensateinjection冷凝水入口DrainAdvantage•simpledesign•reliable•temperatureordifferentialtemperaturecontrolavoidinfluxofcoldwaterduringstandstill,henceavoidingthermallyinducedrotorbendingDisadvantage•lowerefficiency优点•设计简单•可靠•温度和温差控制避免静态时冷水进入，从而避免转子的热弯曲缺点•效率低AxialThrustCompensation轴向推力补偿Unbalancedpressuredistributiononimpellers叶轮不平衡力Advantage•easyandsafeaxialrotorsettingbecauseoftheradialgapascomparedtoaxialsealinggapasonbalancediskorsteppedbalancedrum•mostreliabledesignfortransientconditions(startupandrundown,quicktemperaturechanges,dailystartsandstops)优点•与平衡盘比较，径向间隙的调整要比轴向间隙的调整方便和安全•瞬态(启动和停机,快速温度变化，日启停)时最为可靠Axialhydraulicthrustcom