| 流体激振力对高速泵转子振动特性的影响研究 |
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| 引用本文： | 窦唯,刘占生.流体激振力对高速泵转子振动特性的影响研究[J].机械科学与技术(西安),2013,32(3):377-382. |
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| 作者姓名： | 窦唯 刘占生 |
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| 作者单位： | 1. 北京航天动力研究所,北京,100076
2. 哈尔滨工业大学能源科学与工程学院 哈尔滨150001 |
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| 摘 要： | 对高速泵三维流场进行了非定常计算,分析了高速泵内的压力分布情况。研究了高速泵叶轮上的稳态径向力和脉动径向力,分析了流体激振力对高速泵叶轮系统的振动及其轴心轨迹的影响。计算结果表明:泵内部流场的压力分布合理,稳态作用力的计算符合实际数据;瞬态作用力与叶轮和隔舌的干涉流动有很大关系;在脉动激振力作用下,泵转子振动响应谱图中出现了脉动激振力的频率及其谐波频率。
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| 关 键 词： | 高速泵 振动 转子 流体激振力 数值计算 |
Effect of the Hydrodynamic Forces on the Vibration of Rotor in a Centrifugal Pump |
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| Abstract: | Unsteady computation of 3-D flow field in centrifugal pump is calculated,and static pressure distribution of centrifugal pump is analyzed.The volute and the hydrodynamic radial direction forces on the impeller are investigated,and the effect on vibration characteristics and the shaft centerline orbit of centrifugal bump system are obtained and analyzed.The calculated result shows that the flow field of centrifugal pump is reasonable,the calculated steady force is close to experimental result,the unsteady forces are related to impeller-tongue interactions;Under the action of hydrodynamic forces,the frequencies of hydrodynamic forces and harmonics occur in rotor of the centrifugal pump. |
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| Keywords: | pump vibration rotor hydrodynamic force numerical computation |
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