US 12,392,319 B2
Modular wind turbine blade structure and manufacturing method thereof
Kunlun Tan, Changzhou (CN); Yelin Liu, Changzhou (CN); Qiuping Du, Changzhou (CN); Ning Li, Changzhou (CN); Lei Cao, Changzhou (CN); and Jian Zhang, Changzhou (CN)
Assigned to NEWTECH GROUP CO., LTD., Jiangsu (CN)
Filed by NEWTECH GROUP CO., LTD., Changzhou (CN)
Filed on Sep. 6, 2024, as Appl. No. 18/827,636.
Application 18/827,636 is a continuation of application No. PCT/CN2023/124319, filed on Oct. 12, 2023.
Claims priority of application No. 202310050523.6 (CN), filed on Feb. 1, 2023.
Prior Publication US 2024/0426274 A1, Dec. 26, 2024
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/069 (2023.08) [F05B 2240/304 (2020.08)] 5 Claims
OG exemplary drawing
 
1. A modular wind turbine blade structure, wherein the blade is divided into a blade root module, a blade stem module and a blade tip module in the length direction thereof, the structure comprising a windward shell, a leeward shell, a T-shaped rib and a support member, wherein the windward shell and the leeward shell are assembled relative to each other to form a complete cross-sectional structure of the blade, wherein the T-shaped rib is fixed on the windward shell and the leeward shell along length direction of the blade, a plurality of the T-shaped ribs is provided at an interval in width direction of the blade, and the T-shaped ribs are attached to the inner wall of the windward shell and the leeward shell, and wherein the support member comprises a web and spar caps connected at both ends of the web, the two spar caps respectively fixedly connected to the inner wall of the windward shell and the leeward shell,
wherein the T-shaped rib and the spar cap are pultruded profiles, and the windward shell and the leeward shell are formed through an automatic tape laying process,
wherein the structure further comprises a trailing edge beam disposed at a position where the windward shell and the leeward shell are butted, wherein the top surface of the trailing edge beam is attached to the windward shell at the trailing edge, and the bottom surface of the trailing edge beam is attached to the leeward shell at the trailing edge, and wherein the windward shell and the leeward shell are bent inward at the trailing edge and are attached to the sidewall of the trailing edge beam,
wherein both the windward shell and the leeward shell have an inwardly bent flanging structure at the leading edge, and the flanging structures of the windward shell and the leeward shell are arranged parallel and opposite, with a structural adhesive layer between them,
wherein the flanging structures are covered with an inner reinforcement layer at their connection inside the shell, and the flanging structures are covered with an outer reinforcement layer externally, and
wherein the structural adhesive layer overflows at both ends of the two flanging structures to form an undercut structure that is covered by the inner reinforcement layer and the outer reinforcement layer respectively, both ends of the inner reinforcement layer and the outer reinforcement layer are fixedly connected to the windward shell and the leeward shell respectively.