US 2026/0309124 A1 · SPAR CAP, WIND TURBINE BLADE AS WELL AS METHOD OF MANUFACTURING A SPAR CAP

Abstract

A spar cap, a wind turbine blade and a method of manufacturing a spar cap for a wind turbine blade is provided. The spar cap includes a plurality of plate-shaped pultruded main bodies which are arranged one above the other in a stacking direction to form a main body stack. Furthermore, the spar cap includes at a first end face of the main body stack a first main body end of a first main body of the plurality of main bodies which is arranged offset in the longitudinal direction of the spar cap relative to a first main body end of a second main body of the plurality of main bodies on an upper side of the second main body in such a manner that a transition portion is formed by the second main body between the first main body end of the first main body and the first main body end of the second main body, wherein the second main body is arranged adjacent to the first main body. In addition, the spar cap includes at least a first stiffening body, wherein the at least one first stiffening body is arranged at least at the first main body end of the first main body and at least partially at an upper side of the second main body in the transition portion formed by the second main body for at least partially carrying longitudinal loads running at least in the longitudinal direction of the spar cap and transmitting the longitudinal loads to the main body stack.

Claims15

Dependent claims

A spar cap for a wind turbine blade, wherein the spar cap comprises:

a plurality of plate-shaped pultruded main bodies, wherein the main bodies are arranged one above the other in a stacking direction to form a main body stack in order to at least partially carry longitudinal loads running at least in a longitudinal direction of the spar cap, and wherein at a first end face of the main body stack at least a first main body end of a first main body of the main bodies is arranged offset in the longitudinal direction of the spar cap relative to a first main body end of a second main body of the main bodies in such a manner that a transition portion is formed by the second main body between the first main body end of the first main body and the first main body end of the second main body, wherein the second main body is arranged adjacent to the first main body;
and
at least one first stiffening body, wherein the at least one first stiffening body is arranged at least at the first main body end of the first main body and at least partially at an upper side of the second main body in the transition portion formed by the second main body for at least partially carrying longitudinal loads running at least in the longitudinal direction of the spar cap and transmitting the longitudinal loads to the main body stack.

A method of manufacturing a spar cap for a wind turbine blade, the method comprising:

providing a plurality of plate-shaped main bodies,
providing a plurality of fiber layers or providing at least a first stiffening body,
arranging the main bodies one above the other in a stacking direction to form a main body stack, wherein at least a first main body end of a first main body of the of main bodies is arranged on a first end face of the main body stack offset in a longitudinal direction of the spar cap to be manufactured with respect to a first main body end of a second main body of the plurality of main bodies in such a way that a transition portion is formed by the second main body between the first main body end of the first main body and the first main body end of the second main body, and wherein the second main body is arranged adjacent to the first main body,
arranging the plurality of fiber layers to the first main body end of the first main body and at least partially at an upper side of the second main body in a transition portion formed by the second main body, and laminating at least the arranged plurality of fiber layers to the stiffening body to manufacture the spar cap or
arranging the at least one first stiffening body at least at the first main body end of the first main body and at least partially at an upper side of the second main body in the transition portion formed by the second main body to manufacture the spar cap.

2 more elements

Dependencies are inferred from the claim text.

Spar cap, wind turbine blade as well as method of manufacturing a spar cap

Life of this patent

Spar cap, wind turbine blade as well as method of manufacturing a spar cap

Life of this patent

Abstract

Claims15