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US 11,619,205 B2Granted
Wind turbine blade and wind turbine power generating apparatus
AssigneeVestas Wind Systems A/S
InventorsKenji Sato, Masayuki Hiraishi
Life of this patent
Estimating the term…
Abstract
A wind turbine blade includes: a metal receptor including a blade tip of the wind turbine blade; and a blade body portion connected to the metal receptor so as to be positioned on a blade-root side of the metal receptor, the blade body portion having a hollow structure and forming an airfoil shape in a blade tip region of the wind turbine blade with the metal receptor in a joint region to the metal receptor. As seen in a blade-thickness direction of the wind turbine blade, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and a leading edge of the wind turbine blade is inclined from a chordwise direction of the wind turbine blade.
Claims22
A wind turbine blade, comprising:
- a blade body portion including a blade root portion to be attached to a hub of a wind turbine, a blade tip portion positioned farthest from the hub, and a blade center portion extending between the blade root portion and the blade tip portion in a blade spanwise direction, wherein the blade body portion has a leading edge and a trailing edge extending from the blade root portion to the blade tip portion and a blade chordwise direction is the direction along a chord connecting the leading edge and the trailing edge;
- and
- a metal receptor forming a blade tip of the wind turbine blade,
- wherein the metal receptor is self-contained and selectively connectable to and removable from the blade body portion,
- wherein the blade body portion has a hollow structure and forms an airfoil shape in the blade tip portion of the wind turbine blade with the metal receptor in a joint region to the metal receptor,
- wherein, as seen in a blade-thickness direction of the wind turbine blade which is perpendicular to both of the spanwise direction and the chordwise direction, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and the leading edge of the wind turbine blade is inclined from the chordwise direction of the wind turbine blade so as to get closer to the blade tip with distance from the leading edge toward the trailing edge of the wind turbine blade.
3 more elements
A wind turbine blade, comprising:
- a blade body portion including a blade root portion to be attached to a hub of a wind turbine, a blade tip portion positioned farthest from the hub, and a blade center portion extending between the blade root portion and the blade tip portion in a blade spanwise direction, wherein the blade body portion has a leading edge and a trailing edge extending from the blade root portion to the blade tip portion and a blade chordwise direction is the direction along a chord connecting the leading edge and the trailing edge;
- and
- a metal receptor forming a blade tip of the wind turbine blade, wherein the blade body portion is connected to the metal receptor so as to be positioned on a blade-root side of the metal receptor,
- wherein the blade body portion has a hollow structure and forms an airfoil shape in the blade tip portion of the wind turbine blade with the metal receptor in a joint region to the metal receptor,
- wherein, as seen in a blade-thickness direction of the wind turbine blade which is perpendicular to both of the spanwise direction and the chordwise direction, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and the leading edge of the wind turbine blade is inclined from the chordwise direction of the wind turbine blade so as to get closer to the blade tip with distance from the leading edge toward the trailing edge of the wind turbine blade,
- wherein the metal receptor has a cavity inside the metal receptor.
3 more elements
A wind turbine blade, comprising:
- a blade body portion including a blade root portion to be attached to a hub of a wind turbine, a blade tip portion positioned farthest from the hub, and a blade center portion extending between the blade root portion and the blade tip portion in a blade spanwise direction, wherein the blade body portion has a leading edge and a trailing edge extending from the blade root portion to the blade tip portion and a blade chordwise direction is the direction along a chord connecting the leading edge and the trailing edge;
- and
- a metal receptor forming at least a section of the blade tip portion, the metal receptor defining a blade tip of the wind turbine blade, and wherein a cross section of the blade tip portion that includes the metal receptor is formed of metal throughout the cross section of the blade tip portion,
- wherein the blade body portion is connected to the metal receptor so as to be positioned on a blade-root side of the metal receptor,
- wherein the blade body portion has a hollow structure and forms an airfoil shape in the blade tip portion of the wind turbine blade with the metal receptor in a joint region to the metal receptor,
- wherein, as seen in a blade-thickness direction of the wind turbine blade which is perpendicular to both of the spanwise direction and the chordwise direction, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and the leading edge of the wind turbine blade is inclined from the chordwise direction of the wind turbine blade so as to get closer to the blade tip with distance from the leading edge toward the trailing edge of the wind turbine blade.
3 more elements
Dependencies are inferred from the claim text.