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US 12,180,942 B2Granted
Wind turbine
AssigneeNordex Energy Spain, S.A.
InventorsJavier Pascual Resano, Jose Luis Aristegui Lantero, Teresa Arlaban Gabeiras, Jose Miguel Garcia Sayes, Miguel Nunez Polo
Life of this patent
Estimating the term…
Abstract
A wind turbine includes a hub, at least one blade and at least one pitch bearing to connect the at least one blade to the hub. The at least one pitch bearing has at least an inner ring and an outer ring, and at least a rolling race. The wind turbine further includes at least a tensioning system configured to exert a radial compression force to at least a part of the outer ring of the at least one pitch bearing, thus increasing the resultant stiffness of the at least one pitch bearing.
Claims13
A wind turbine comprising:
- a hub;
- at least one blade;
- and
- at least one pitch bearing to connect the at least one blade to the hub, the at least one pitch bearing comprising at least an inner ring and an outer ring, and at least two rolling races;
- wherein the wind turbine further comprises at least a tensioning system disposed at least partially on the outer ring of the at least one pitch bearing exerting a radial compression force to at least a part of the outer ring of the at least one pitch bearing;
- wherein the outer ring comprises a flat surface proximate to the at least one blade and a flat surface proximate to the hub, wherein the tensioning system is located more proximate to the flat surface proximate to the at least one blade than to the flat surface proximate to the hub;
- wherein the inner ring of the at least one pitch bearing is joined to the at least one blade;
- wherein the outer ring of the at least one pitch bearing is joined to the hub;
- wherein the at least two rolling races comprise a first rolling race proximate to the flat surface proximate to the at least one blade and a second rolling race proximate to the flat surface proximate to the hub;
- and
- wherein the radial compression force is exerted in at least a transversal projection of the first rolling race on a perimeter of the outer ring and beyond the transversal projection of the first rolling race on the perimeter of the outer ring, towards the flat surface proximate to the hub without reaching a transversal projection of the second rolling race on the perimeter of the outer ring.
8 more elements
A wind turbine comprising:
- a hub;
- at least one blade;
- and
- at least one pitch bearing to connect the at least one blade to the hub, the at least one pitch bearing comprising at least an inner ring and an outer ring, and at least two rolling races;
- wherein the wind turbine further comprises at least a tensioning system disposed at least partially on the outer ring of the at least one pitch bearing exerting a radial compression force to at least a part of the outer ring of the at least one pitch bearing;
- wherein the outer ring comprises a flat surface proximate to the at least one blade and a flat surface proximate to the hub, wherein the tensioning system is located more proximate to the flat surface proximate to the at least one blade than to the flat surface proximate to the hub;
- wherein the inner ring of the at least one pitch bearing is joined to the at least one blade;
- wherein the outer ring of the at least one pitch bearing is joined to the hub;
- wherein the at least two rolling races comprise a first rolling race proximate to the flat surface proximate to the at least one blade and a second rolling race proximate to the flat surface proximate to the hub;
- and
- wherein the tensioning system covers a transversal projection of the first rolling race on a perimeter of the outer ring;
- and
- wherein the tensioning system surpasses the transversal projection of the first rolling race on the perimeter of the outer ring, towards the flat surface proximate to the hub without reaching a transversal projection of the second rolling race on the perimeter of the outer ring.
10 more elements
Dependencies are inferred from the claim text.