Vestas Wind Systems A/s

James Smith

Jonathan Smith

Robert Ernst

Mark Folsom

Andrew Hedges

Peter Bøttcher

Jens-Jørgen Hansen

An insert () for a wind turbine blade root. The insert () has a bushing () and an outer surface with circumferential annular grooves (). A transition layer () is built up around the bushing (). The transition layer () has fibrous material sheet layers and filamentary material windings () in the grooves which alternate with fibrous plies () covering the grooves (). Each fibrous ply () is anchored into the grooves () by the windings (). Fibrous battens () are fitted around the transition layer () to form an insert body (). Each batten () has a deltoid cross-section so that the battens give the insert a quadrilateral or trapezoidal cross-section.

Insert for a wind turbine blade root

A wind turbine blade comprising: a first blade portion having a shell that defines a suction side, a pressure side, a leading edge, and a trailing edge of the blade, the first blade portion further including a first blade portion end surface at one end of the first blade portion; a second blade portion having a shell that defines a suction side, a pressure side, a leading edge, and a trailing edge of the blade, the second blade portion further including a second blade portion end surface at one end of the second blade portion, wherein the first blade portion and the second blade portion are configured to be coupled together at the first and second blade portion end surfaces; and a connection joint for coupling the first and second blade portions together, wherein the connection joint includes: a first insert embedded in the first blade portion; a fitting integral with the first insert and projecting from the first blade portion end surface toward the second blade portion end surface; a second insert embedded in the second blade portion; and a fastener arranged to fasten the second insert to the fitting.

Connection for split wind turbine blade

A composite material blank comprising an elongate blank body extending between a first end face and a second end face; said blank body extending in a longitudinal direction, parallel to a longitudinal axis thereof, and having four peripheral sides; each said first and second end face having edges which define a trapezoid shape; wherein the peripheral sides of said blank body connect the edges of said first end face with the edges of said second end face; and wherein said first trapezoid end face is inverted in relation to said second trapezoid end face. A method of manufacturing a composite blank, and a wind turbine blade root insert which may be formed from a blank.

Insert and blank for a wind turbine blade root

An insert () for a wind turbine blade root. The insert () has a bushing () and an outer surface with circumferential annular grooves (). A transition layer() is built up around the bushing (). The transition layer () has fibrous material sheet layers and filamentary material windings () in the grooves which alternate with fibrous plies () covering the grooves (). Each fibrous ply () is anchored into the grooves () by the windings (). Fibrous battens () are fitted around the transition layer () to form an insert body (). Each batten ()has a deltoid cross-section so that the battens give the insert a quadrilateral or trapezoidal cross-section.

A composite material blank () comprising an elongate blank body () extending between a first end face () and a second end face (); said blank body () extending in a longitudinal direction, parallel to a longitudinal axis thereof, and having four peripheral sides (); each said first and second end face () having edges (--) which define a trapezoid shape; wherein the peripheral sides () of said blank body () connect the edges (-) of said first end face () with the edges (-) of said second end face (); and wherein said first trapezoid end face () is inverted in relation to said second trapezoid end face (). A method of manufacturing a composite blank (), and a wind turbine blade root insert () which may be formed from a blank ().

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Ryde, United Kingdom

James Smith