不同叶型的液压动力轴的设计与数值模拟  

Design and Numerical Simulation of Hydraulic Power Shaft with Different Blade Profiles

作　　者：王桃[1,2] 董元诚 黄腾飞 郭庆 WANG Tao;DONG Yuancheng;HUANG Tengfei;GUO Qing(Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu Sichuan 610039,China;Key Laboratory of Fluid Machinery and Engineering of Sichuan Province,Xihua University,Chengdu Sichuan 610039,China)

机构地区：[1]西华大学,流体及动力机械教育部重点实验室,四川成都610039 [2]西华大学,流体机械及工程四川省重点实验室,四川成都610039

出　　处：《机床与液压》2024年第20期198-204,共7页Machine Tool & Hydraulics

基　　金：四川省科技厅重点研发项目(2023YFS0387)。

摘　　要：涡轮可将高压射流的能量转换为维持液压动力轴运转的机械能,合理设计其型式可显著提升液压动力轴的工作性能。设计4种不同型式的涡轮模型,采用数值模拟的方法,分析了不同型式方案下液压动力轴外特性、内流场分布以及能量损失的影响。结果表明:在切击式涡轮方案下,涡轮平均总扭矩最大,装置水力效率最大,达到了94.37%;切击式涡轮叶片的湍动能最小,流体速度梯度变化更加均匀;由于此方案中涡轮设计与流体流动的匹配良好,旋转域部件和整个模型的总熵产值均最小,降低了水力损失,能量转换效果更优。在同一工况条件下,切击式涡轮方案的液压动力轴性能最优。The turbine can convert the energy of high-pressure jet into mechanical energy to maintain the operation of the hydraulic power shaft.The reasonable design of its type can significantly improve the working performance of the hydraulic power shaft.Four different types of turbine models were designed,while the effects of the external characteristics,internal flow field distribution and energy loss of hydraulic power shaft were analyzed by numerical simulation,respectively.The results show that in the tangential entry turbine scheme,the hydraulic efficiency of the device is the highest in four schemes,reaching 94.37%,and the average total torque of the turbine is the largest,the turbulent kinetic energy of the tangential entry turbine blade is the smallest,and the fluid velocity gradient varies uniformly.The total entropy production in the rotating domain component and the whole model is reduced as the turbine design is well matched with the fluid flow.Under the same working condition,the hydraulic performance is the best in the tangential entry turbine scheme.

关 键 词：液压动力轴 涡轮型式 数值模拟 

分 类 号：TH137.5[机械工程—机械制造及自动化]