Patent ID: 11911987
Assignee: SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY S.L.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A wind turbine blade, with a generally hollow blade body comprising:
an upper and a lower half shell and first and a second elongated webs each extending in the lengthwise direction of the blade and being disposed between and connected to the upper and the lower half shell,
wherein each elongated web comprises an upper and a lower flange connecting the respective elongated web to the respective half shell, and
wherein the first and second elongated webs are supported via respective first and second reinforcement structures in the respective half shell, which reinforcement structures are arranged between an outer and an inner layer of the upper and lower half shell and extend in the lengthwise direction of the blade, wherein the first and second reinforcement structures each comprise at least one stack composed of a plurality of glass fiber layers infused with resin, and wherein at least one stiffening element extends parallel to the first and second reinforcement structures, wherein the at least one stiffening element comprises at least one stack composed of a plurality of pultruded composite strips comprising carbon fibers with the composite strips being fixed in the resin, and wherein the at least one stiffening element is arranged between the first and second reinforcement structures.