公开(公告)号：US20230287696A1

公开(公告)日：2023-09-14

申请号：US18040889

申请日：2021-08-14

Applicant: Vestas Wind Systems A/S

Inventor： Anders Skafte

IPC: E04G23/02 ,  F03D13/20

CPC classification number: E04G23/0218 ,  F03D13/20

Abstract: An aspect of the invention relates to a method of reinforcing a tubular wind turbine structure using a radially adjustable ring stiffener. The ring stiffener comprises a pair of adjacent ring segments coupled together by a coupling means configured to permit radial adjustment of the ring stiffener by varying an intersegmental separation between adjacent ends of those ring segments. The method comprises: positioning the ring stiffener at a reinforcement position within the tubular wind turbine structure; and adjusting the intersegmental separation between the pair of adjacent ring segments to increase the radius of the ring stiffener; and thereby to engage an inner surface of the tubular wind turbine structure with a radial force that holds the ring stiffener at the reinforcement position by means of friction between the ring stiffener and the tubular wind turbine structure.