SHIPENGINEERING船舶工程Vol.45No.22023总第45卷,2023年第2期—21—不同支撑方案下汽轮给水泵组的轴系振动特性闫佳佳1,彭龙龙1,于胜剑2,尤明明1,李兵1(1.上海船舶设备研究所,上海200031;2.大连船舶重工集团有限公司,辽宁大连116037)摘要:以某型汽轮给水泵组轴系为研究对象,提出轴承对外传递力的计算方法。对比分析不同轴承支撑方案下轴系的振动特性及轴承对外传递力的特性,进行机组轴系支撑方案论证研究。结果表明:在汽轮机单侧和双侧支撑方案下,机组轴系均可在额定工况转速范围内安全可靠地运行;在额定转速下,采用单侧支撑方案的机组,其各轴承外传力大于采用双侧支撑方案的机组,但在3000r/min以下的低速工况时,2种方案下的机组轴承外传力基本一致,且单侧支撑下中间轴承的外传力更小。该结论对于该类型汽轮给水泵组的结构设计具有一定参考价值。关键词:汽轮给水泵;轴系;振动特性;支撑方案;轴承外传力中图分类号:U664.113文献标志码:A【DOI】10.13788/j.cnki.cbgc.2023.02.02ShaftingVibrationCharacteristicsofSteamTurbineFeedPumpUnitsunderDifferentSupportingSchemesYANJiajia1,PENGLonglong1,YUShengjian2,YOUMingming1,LIBing1(1.ShanghaiMarineEquipmentResearchInstitute,Shanghai200031,China;2.DalianShipbuildingIndustryCo.,Ltd.,Dalian116037,Liaoning,China)Abstract:Takingtherotorsystemofatypicalsteamturbinefeedpumpunitastheresearchobject,thecalculatingmethodofbearingtransmittedforceisproposed.Thevibrationcharacteristicsofrotorsystemandbearingtransmittedforcearecomparedunderdifferentsupportingschemes,andthesupportingperformanceofrotorsystemisdemonstrated.Theresultsshowthattherotorsystemcouldoperatesafelybothinunilateralandtwainsupportrelativetotheturbinecasing.Undertheratedrotatingspeed,allthebearingtransmittedforcesinunilateralsupportarelargerthanthoseintwainsupport.Thebearingforcesintwosupportingschemesremainconsistentbelow3000r/min,andthetransmittedforceofmiddlebearinginunilateralsupportissmaller.Theseresultsarebeneficialforthestructuredesignofthetypeofsteamturbinefeedpump.Keywords:steamturbinefeedpump;rotorsystem;vibrationcharacteristics;supportingscheme;bearingtransmittedforce0引言汽轮给水泵机组是重要的汽轮辅机设...