自驱旋转式能量回收装置的转速特性曲线  

Research on speed characteristic curve of self-driving rotary energy recovery device

作　　者：杨大壮 袁丹青[1] 李辉[1] YANG Dazhuang;YUAN Danqing;LI Hui(School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《排灌机械工程学报》2024年第3期288-293,318,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金青年科学基金资助项目(51106066)。

摘　　要：为研究自驱旋转式能量回收装置的转速特性曲线,采用理论分析的方法,构建一种新的转速预测模型,并应用Fluent 6DOF模型,通过UDF文件定义固体转子的质量与转动惯量等物理参数,构建了自驱旋转式能量回收装置转子的刚体被动旋转的数值模型,得到了转子在装置进口流量Q为70.2 m^(3)/h,装置出口压力p为6.0 MPa工况下的速度分布,以及各工况下转子所受驱动扭矩随时间的变化关系,并总结出转子启动过程中的转速变化规律.结果表明,各工况下转子的启动时间均低于2 s,且转子转速与流量成正比;理论模型与数值模型吻合度较高,Q为26.3 m^(3)/h工况下相对误差最高,达14.9%,Q为61.4 m^(3)/h工况下相对误差最小,为0.77%.In order to investigate the characteristic curve of self-driving rotary displacement energy recovery device,a new speed prediction model was proposed by using the method of theoretical analysis.And applying the Fluent 6DOF model,a numerical model for the rigid passive rotation of the rotor of a self-driving rotating energy recovery device was constructed by defining physical parameters such as mass and moment of inertia of the solid rotor through UDF files.The velocity distribution of the rotor under the condition of an inlet flow rate Q=70.2 m^(3)/h,and an outlet high pressure p=6.0 MPa,as well as the condition and the variation relation of the rotor driving torque with time under each condition were obtained.The variation law of the rotor speed during the starting process was summarized.The results show that the starting time of the rotor under all operating conditions is less than 2 s,and the rotor speed is proportional to the flow rate.The theoretical model and numerical model have high degree of agreement,where relative error under condition of Q=26.3 m^(3)/h is the highest(14.9%),and the relative error under condition of Q=61.4 m^(3)/h is the smallest(0.77%).

关 键 词：自驱旋转式能量回收装置 转速特性 被动旋转 数值模拟 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] S277.9[农业科学—农业水土工程]