Pitch assembly for a wind turbine rotor blade

US9970414B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Biju Nanukuttan · Kanchinakote, IN
• Rajanikanth Reddy Dasari · Bengaluru, IN
• Dhanesh Chandrashekar Pathuvoth · Bengaluru, IN
• Srikanth Samudrala · Bengaluru, IN
• Mohan Kumar Lakshminarayana · Bengaluru, IN

Key dates

• Filing date: Jul 1, 2015
• Grant date: May 15, 2018
• Expiry date: Dec 20, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The present disclosure is directed to a pitch assembly for coupling a rotor blade to a hub of a wind turbine. In one embodiment, the pitch assembly includes a first pitch bearing having a first outer race and a first inner race rotatable relative to the first outer race via a first set of rolling elements, a second pitch bearing having a second outer race and a second inner race rotatable relative to the second outer race via a second set of rolling elements, and at least one spacer configured axially between and contacting the first and second pitch bearings. Further, at least a portion of the first pitch bearing and at least a portion of the second pitch bearing are axially aligned between the rotatable hub and the rotor blade in a generally span-wise direction.