涡轮泵叶轮/转子配合间隙对稳定性的影响  

Effect of tolerance clearance between turbine rotor and impeller in liquid-propellant rocket engine on stability

作　　者：窦唯[1] 叶志明[1] 闫宇龙[1] 

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《火箭推进》2016年第4期26-34,共9页Journal of Rocket Propulsion

基　　金：中国航天科技集团公司重大工艺课题研究(ZDGY2013-35)

摘　　要：涡轮泵是液体火箭发动机的动力核心部件。涡轮泵工作时叶轮等组件随转子系统高速运转,其松脱转速是影响涡轮泵转子系统动力稳定性的主要因素。而确保涡轮或叶轮内径与转轴外径之间的工艺配合尺寸设计的合理性,就能够将松脱转速控制在安全范围内。以某涡轮泵为研究对象,分析了高速运转时涡轮、叶轮过盈量大小对转子运行状态的影响规律。同时,给出了最小松脱转速下设计过盈量的大小,并在理论分析的基础上进行了试验验证。Turbine pump is the core power component of liquid-propellant rocket engine. The separate speed of turbine and impeller is the major factor which effects the stability of the turbine pump rotor system. The separate speed can be controlled within a safe range when the fit dimensions of turbine, impeller and shaft are designed reasonably. Taking a certain turbopump as the research object, the effect law of interference magnitude of turbine and impeller on the running state of the turbopump rotor in high-speed rotation is analyzed in this paper. The interference magnitude value in minimum separate rotating speed is given and verified in testing on the basis of theory analysis. It is meaningful of the research to design the tolerance clearance stability ofturbopump rotor system. between impeller and shaft, which can improve the

关 键 词：火箭发动机 涡轮 叶轮 松脱转速 

分 类 号：TH113[机械工程—机械设计及理论]