叶片结冰特性及疏水弹性涂层的脱冰试验  

Icing Characteristics of Blades and Deicing Test of Hydrophobic Elastic Coating

作　　者：应宇翔 杨柳晶 金崇会 李珂 李亚斌 周永刚[2] YING Yuxiang;YANG Liujing;JIN Chonghui;LI Ke;LI Yabin;ZHOU Yonggang(Guodian Ningbo Wind Power Development Co.,Ltd.,Ningbo 315000,Zhejiang Province,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;Energy and Environment System Engineering,Zhejiang University of Science&Technology,Hangzhou 310023,China)

机构地区：[1]国电宁波风电开发有限公司,浙江宁波315000 [2]浙江大学能源清洁利用国家重点实验室,杭州310027 [3]浙江科技学院能源与环境系统工程系,杭州310023

出　　处：《动力工程学报》2023年第9期1216-1222,1237,共8页Journal of Chinese Society of Power Engineering

摘　　要：为探究叶片结冰特性及疏水弹性涂层的脱冰效果与脱冰特性,在风电厂实地搭建了试验风机,采用图像法分析了风机叶片的结冰特性,并对比了疏水弹性涂层采用手工涂敷和喷枪喷涂的脱冰效果,以及涂层对明冰和霜冰的脱除效果。结果表明:霜冰和明冰均主要分布在叶片的前缘,相比霜冰,明冰在叶片前缘分布的范围较大,且随着旋转半径的增大,叶片结冰量增多,呈线性关系;采用疏水弹性涂层后,叶片接触角约增加64%;得益于涂层的光滑疏水表面特征和微尺度的形变能力,叶片的冰黏附强度降低约93%;在叶片结冰时,受周期性切向力的作用,有涂层的叶片可以及时甩脱覆冰,且手涂涂层的脱冰效果优于喷涂涂层,涂层对明冰的脱除效果优于霜冰。In order to investigate the blade icing characteristics,the deicing effect and deicing characteristics of the hydrophobic elastic coating,an experimental wind turbine was built in a wind power plant.The icing characteristics of the wind turbine blades were analyzed using the image method,and the deicing effect of the hydrophobic elastic coating using manual coating and spray gun was compared,as well as the deicing effect of the coating on glaze ice and rime ice.Results show that both rime ice and glaze ice are mainly distributed on the leading edge of the blade.Compared with the rime ice,the glaze ice is distributed in a larger range on the leading edge of the blade.As the rotation radius increases,the amount of ice on the blades increases in a linear relationship.After using the hydrophobic elastic coating,the contact angle of the blade increases by approximately 64%.Thanks to the smooth hydrophobic surface characteristics and microscale deformation ability of the coating,the ice adhesion strength of the blade is reduced by about 93%.When the blade freezes,under the action of periodic tangential force,the ice on the coated blade can be thrown off in time,and the deicing effect of the manual coating is better than that of the sprayed coating.The deicing effect of the coating on glaze ice is better than that of rime ice.

关 键 词：风力发电机 叶片结冰 除冰 疏水弹性涂层 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]