采用镜板泵的水电机组推力轴承油循环系统的流动特性研究  

Research on Fluid Dynamics of Oil Circulating System of Thrust Bearing for Hydroelectric Units with Runner-Pump

作　　者：廖姣 刘彬 LIAO Jiao;LIU Bin(Yingxiuwan Hydropower Plant of State Grid Sichuan Electric Power Company,Chengdu Sichuan 611833;Skill Training Center of Sichuan Electric Power Company of State Grid,Chengdu Sichuan 611833)

机构地区：[1]国网四川省电力公司映秀湾水力发电总厂,四川成都611833 [2]国网四川省电力公司技能培训中心,四川成都611833

出　　处：《四川水力发电》2022年第5期123-128,共6页Sichuan Hydropower

摘　　要：为初步研究采用镜板泵的水电机组推力轴承油循环系统的流动特性,采用数值模拟方法对某推力轴承油循环冷却系统的管路、推力轴承油箱内流场和镜板泵进行流体动力特性研究。结果表明:采用1D流体动力数值模拟方法得到的管路损失随着流量的增大不断增大,且与试验数据吻合,证明采用的方法可用于油循环管路的流阻损失计算;采用基于3D数值模拟分析方法对推力轴承油箱内流场及镜板泵进行流体动力性能预测,预测结果符合实际情况。该研究可为根据不同电站实际系统布置提供了准确确定镜板泵的设计参数的方法。In order to gain the fluid dynamics of oil circulating system of thrust bearing for hydroelectric units with runner-pump.the numerical simulation method is used to study the fluid dynamics of the pipeline of oil circulation cooling system for a thrust bearing,the flow field in the oil tank of the thrust bearing and the runner-pump.The results show that the pipeline loss obtained by 1D numerical simulation method increases with the increase of the flow rate,which agrees with the experimental data It proves that the method can be used to calculate the flow resistance loss of the oil circulation pipeline.The fluid dynamics in thrust bearing tank and hydrodynamic performance of runner-pump is predicted based on 3D numerical simulation analysis method,and the predicted results are in accordance with physical truth.This research provides a method for accurately determining design parameters of runner-pump according to actual system layout of different power stations.

关 键 词：镜板泵 推力轴承 油循环冷却系统 数值模拟 

分 类 号：TK733.1[交通运输工程—轮机工程] TE926[动力工程及工程热物理—流体机械及工程] TV74[石油与天然气工程—石油机械设备]