公开(公告)号：US20160040654A1

公开(公告)日：2016-02-11

申请号：US14373153

申请日：2013-01-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Joe CUOGHI ,  Carl GREGORY ,  Robert TOWNSEND

IPC: F03D11/00 ,  F03D7/04 ,  F03D1/06

CPC classification number: F03D17/00 ,  F03D1/0675 ,  F03D7/042 ,  F03D80/40 ,  F05B2260/20 ,  Y02E10/721

Abstract: A method of de-icing a wind turbine blade (5) comprises the steps of: generating heated air using heating means (10) provided in the root portion of the blade; and continuously circulating the heated air around the interior of the blade through at least a portion of two more longitudinal blade cavities (24, 26, 28) defined within the blade. The circulating step includes: channelling the heated air from an outlet (32a) of the heating means at least part way through a first longitudinal blade cavity (26), towards the tip end (18) of the blade; at a position along the length of the blade, diverting the heated air from the first longitudinal blade cavity (26) into a second longitudinal blade cavity (24); and channelling the diverted air at least part way through the second longitudinal blade cavity (24) back to an inlet (34) of the heating means (10). The heated air is circulated through at least a central cavity (24) and a leading edge cavity (26) defined between longitudinal webs (22) within the blade.

Abstract translation: 风力涡轮机叶片（5）的除冰方法包括以下步骤：使用设置在叶片的根部中的加热装置（10）产生加热的空气; 以及通过限定在所述叶片内的两个更长的叶片空腔（24,26,28）的至少一部分，使所述被加热的空气在所述叶片的内部周围不断地循环。 循环步骤包括：将来自加热装置的出口（32a）的加热的空气至少部分地穿过第一纵向叶片空腔（26），朝向叶片的尖端（18）引导; 在沿刀片长度的位置处，将加热的空气从第一纵向刀片腔（26）转移到第二纵向刀片腔（24）中; 并且将转向的空气至少部分地引导通过第二纵向叶片空腔（24）返回到加热装置（10）的入口（34）。 加热的空气通过至少中心空腔（24）和限定在叶片内的纵向腹板（22）之间的前缘腔（26）循环。