潮流能水轮机转子系统扭转振动特性研究  

TORSIONAL VIBRATION CHARACTERISTICS OF VERTICAL AXIS TIDAL CURRENT TURBINE

作　　者：赵广[1] 苏钧聪 刘艳[1] 宿晓辉[1] 

机构地区：[1]大连理工大学能源与动力学院,大连116024

出　　处：《太阳能学报》2016年第11期2922-2928,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51305056;11472068);中央高校基本科研业务费(DUT16JJ(G)04)

摘　　要：提出一种变臂长潮流能水轮机,采用有限元法推导水轮机转子系统的扭转振动微分方程,运用流管法建立流体激励模型,利用Newmark逐步积分法求解水轮机转子系统扭转振动动力学响应。最后,搭建水轮机振动实验台,测试其振动特性。结果表明,数轴水轮机扭转振动复杂,存在多种倍频震动成分;与等臂长水轮机相比,变比长水轮机有效扭矩增加,扭转振动倍频振动成分更多;实验测试从定性角度验证数值仿真结果。A variable arm length tidal current turbine was proposed, torsional vibration differential equations of the turbine rotor systems are deduced with FEM, and fluid excitation model with stream-tube method was built. Newmark numerical simulation was employed to simulate the torsional vibration response of turbine rotor system. Finally, the turbine vibration experiment rig was established and its vibration characteristic was checked out. The results showed that, compared with constant arm length turbine, the amplitudes of torsional vibration in variable were length turbines decrease. There is some complex multiple frequency vibration in vertical axis turbine system and the simulation results were verified by experiment from qualitative point of view. Research results provide basic dynamic suggestions of vertical axis turbine on design, operation and vibration prediction.

关 键 词：竖轴水轮机 潮流能 转子系统 扭转振动 

分 类 号：TK730[交通运输工程—轮机工程]