面向风力机叶片的平板超声微振动除冰  

Ultrasonic micro-vibration deicing of flat plate for wind turbine blades

作　　者：李岩[1,2] 董笑宇 郭文峰 张影微[1,2] LI Yan;DONG Xiaoyu;GUO Wenfeng;ZHANG Yingwei(Engineering College of Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Heilongjiang Key Laboratory of Agricultural Renewable Resources Utilization Technology and Equipment in Cold Area, Harbin, Heilongjiang 150030, China)

机构地区：[1]东北农业大学工程学院,黑龙江哈尔滨150030 [2]寒地农业可再生资源利用技术与装备黑龙江省重点实验室,黑龙江哈尔滨150030

出　　处：《排灌机械工程学报》2022年第2期204-210,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51976029);新能源电力系统国家重点实验室开放课题(LAPS19007)。

摘　　要：为了利用超声波产生的微振动研究叶片除冰,采用仿真和试验的手段对平板超声除冰进行研究.基于ANSYS仿真分析了铝板结冰体1阶振型固有频率随冰层厚度的变化规律.谐响应分析了在不同冰层厚度条件下冰层黏着面最大剪应力随激励频率的变化情况,分析了激励电压对冰层黏着面剪应力和除冰面积的影响规律.在此基础上,设计并搭建了超声振动除冰试验系统,测量了在超声振动作用下的冰层黏着力.仿真结果表明,当冰层黏着面剪应力呈均匀且正负交替分布规律时,除冰面积比最大,适用于超声波振动除冰.试验结果表明,超声振动可以显著减小冰层黏着力,最小黏着力仅为无超声振动条件下的23.7%.研究可为超声微振动技术在风力机除冰领域的应用提供理论与试验基础.The purpose of this research is to apply the micro-vibration generated by ultrasonic to deicing the blade.Because of the large wind turbine blade,the local blade can be approximately consi-dered as the flat plate.The simulation and experimental methods were used to carry out the research of ultrasonic deicing on the plate.First of all,the variations of first-order natural frequencies with thicknesses of ice layers were simulated and analyzed by ANSYS.The variations of the maximum shear stress,at the adhesive interface between the ice layer and the aluminum plate,with the thicknesses of ice layers and the excitation frequency were analyzed.Meanwhile,the effects of excitation voltage on the shear stress and the deicing area ratio were also researched.Based on the findings,an ultrasonic deicing experimental system was designed and fabricated.The adhesive forces of ice layers were mea-sured with ultrasonic excitation.The results show that,when the shear stresses at the adhesive interface are distributed uniformly,and the positive and negative shear stresses are alternatively distributed regularly,the deicing area ratio is the highest,which is suitable for ultrasonic vibration deicing.The expe-rimental results show that the ultrasonic vibration can decrease the adhesive force of ice layer dramati-cally.The minimum adhesive force is only 23.7%of the one with no ultrasonic vibration.The findings can lay the theoretical and experimental foundations for the application of the ultrasonic micro-vibration technology to the wind turbine deicing.

关 键 词：风力机叶片 除冰 超声微振动 仿真 剪应力 

分 类 号：S277.9[农业科学—农业水土工程]