System Model and Application of Balancing Drum and Balancing Disc
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摘要: 针对叶轮机的两种典型轴向力平衡装置-平衡鼓和平衡盘,建立了系统模型,它包括普通的数学模型,还包括典型平衡鼓和平衡盘的基本结构以及功能参数特征。定义了3个参数来提取这两个轴向力平衡装置的共性规律,分别是边界条件系数比、液阻系数比和流量对压力变化的敏感度。通过模拟4种典型应用对模型进行分析,包括流道2的边界条件对平衡鼓平衡力、流量敏感度k2的影响;流道1处密封性能对平衡鼓平衡力、流量的影响;流道3封闭时平衡盘平衡力、流量敏感度k1与边界条件系数比的关系;流道4处密封性能对平衡盘平衡力、流量的影响。Abstract: According to turbines' two typical axial force balance devices,balancing drum and balancing disc,a system model was developed,which contains general mathematic model,basic structure and function parameters characteristic of typical balancing drum and balancing disc.Three parameters of boundary condition coefficient ration,fluid resistance coefficient ration and the sensitivity of flow to pressure changes were defined to extract common laws of these two axial force balance devices.And the model was analyzed by simulation of four typical applications: the effect of boundary conditions of flow 2 on the balance drum's balance force and the flow sensitivity k2,the effect of sealing performance of flow 1 on balance drum's balance force and flow,the relation of boundary conditions coefficient ration with the balance disc's balance force and the flow sensitivity k1,and the effect of sealing performance of flow 4 on balance disc's balance force and flow.
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Key words:
- turbin balancing divice /
- alancing drum /
- balancing disc /
- conceptual design /
- balance device
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