简介:IncessantpromotionofpowerefficiencySincelong,powerindustrialenergy-savingspecifications,standardsandmanagementsystemshasbeensystematicallyestablishedpursuanttostatelaws,regulationsandpolicies,andbeensteadilyimprovedthroughoptimization,structureupgrading,andtechnicalretrofitting.Theratioofprimaryenergytransformedintoelectricenergy,theratioofelectricenergyconsumedbyendusersandtheimportantpowertechnicalandeconomicindexeswhichweighnationaleconomicdevelopmentlevel,economicefficiency,energyutilizationef-
简介:本文对驱动管道改造所用泵的固定频率或调频传动装置(AFD)设计的大型刚性轴两级电动机的设计、试验和应用等方面作了论述,对竣工结构和交变轴承结构的转子轴承系统进行了转子动力学分析,对电动机和传动系统所进行的全面工厂试验所得的试验数据作了介绍。该项目包括有22台电动机再加上2台备机,额定容量都为3000hp,使用系数为1.15,转速为3600r/min,频率为60Hz。这些额定值为4000V的电动机在23.5至60Hz范围内变速变转矩运行。第2个新近的项目含有18台电动机、一台备机,额定容量为4000hp,使用系数为1.15,转速为3600r/min,频率为60Hz,本文对该项目也作了简述。这些400v电动机都在24至66Hz的范围内变速变转矩使用。
简介:<正>NatureandaimoftheGroupGorporationChinaHydropowerEngineeringConsultingGroupCorporationsetupattheendof2002withtheapprovaloftheStateCouncilhadrestructuredsevenresearchinstitutesofinvestigationanddesign(Beijing,EastChina,Northwest,Mid-south,Chengdu,Guiyang,Kunminginstitutes)andChinaWaterResourcesandHydropowerConstructionEngi-
简介:<正>ChinaPowerEngineeringConsultingGroupCorporationestablishedonthefoundationofChinaPowerEngineering(Group)CompanyLtd.affiliateseightsolely-ownedemterprisesandcompaniesandaninstitution,theyare:Northeast,EastChina,Central-South.NorthwestandSouthwestpowerdesigninstitutes,EngineeringCompanyLtd.underGuohuaNorthChinaPowerDesignIn-stitute,ChinaPowerConstructionConsultationCorporation,ChinaPowerEngineeringConsultation(Group)CompanyLtd,andthePowerPlanningandDesignGeneralInstitute.