覆冰厚度对气动脉冲除冰效果影响的数值仿真与试验验证  

Numerical Simulation and Experimental Verification of the Influences of Icing Thicknesses on Pneumatic Impulse De-Icing Effects

作　　者：于周 舒立春[1] 胡琴[1] 蒋兴良[1] 雷正飞 Yu Zhou;Shu Lichun;Hu Qin;Jiang Xingliang;Lei Zhengfei(Xuefeng Mountain Energy Equipment Safety National Observation and Research Station Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学雪峰山能源装备安全国家野外科学观测研究站,重庆400044

出　　处：《电工技术学报》2024年第3期844-851,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52077020,51977016)。

摘　　要：叶片结冰影响风力发电机的安全稳定运行,现有的叶片热力除冰、涂料防冰技术分别存在能耗高、耐候性差等问题,均无法大面积推广应用。受飞机机翼气囊除冰方法启发,该文提出一种新结构式的气动脉冲除冰方法。利用Abaqus商业软件对该方法的简化模型进行除冰过程的数值仿真,对比分析了不同脉冲充气气压下覆冰厚度对除冰效果的影响。同时,通过人工覆冰与除冰试验,对仿真结果进行验证。仿真与试验结果表明:在低充气气压下,冰层越薄越容易破碎脱落,覆冰厚度的增加有利于提升低充气气压下的脱冰率;在相同充气气压下,冰层厚度的增加可以降低结构表面形变。With the expansion of wind farm construction in cold regions around the world,more and more attention has been paid to anti-/de-icing technologies used on wind turbine blades.The common ice protection methods for wind turbine blades mainly include super-hydrophobic coating(SHC)anti-icing method and thermal anti-/de-icing methods.However,the hydrophobic property of SHC will be weakened as the number of icing increases and the thermal methods will consume a lot of time and energy with the ambient temperature goes down.Compared with the methods mentioned above,mechanical de-icing method has better de-icing performances with lower energy consumption.Inspired by the airfoil de-icing boot,a new structured pneumatic impulse de-icing method suitable for wind turbine blade is proposed.This method uses the modified epoxy resin to pour the inflatable tube inside the protected structure.By applying an impulse of high pressure gas to produce a rapid impact force,the ice accumulated on the protected structure surface will be crushed and removed.Compared with the de-icing boot used on airfoil,the new structured pneumatic impulse de-icing method has shorter operation time and smaller surface deformation displacement.For identifying the de-icing effects of the new structured pneumatic impulse de-icing method under different icing thicknesses,the dynamic simulation of de-icing process based on the simplified model of this new method was carried out by the commercial software Abaqus.The simulation adopted inflation pressures include 1 MPa,1.5 MPa,2MPa,2.5 MPa and 3 MPa with the impulse duration is 4 ms.To verify the accuracy of simulation results,the pneumatic impulse de-icing samples were manufactured,and the icing and de-icing tests were carried out in the artificial climate chamber.The icing temperature in the climate chamber is controlled at 5℃,the wind velocity is set at 6 m/s,and the average icing thicknesses mainly include 1 mm,2 mm and 3 mm.The simulation and tests results show that:(1)With the increase of inflation press

关 键 词：风力发电机 覆冰 数值仿真 气动脉冲除冰 覆冰试验 

分 类 号：TM315[电气工程—电机]