Turbine blade and method of fabricating the same

US7891947B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Xianglei Chen · Simpsonville, US
• Peggy Lynn Baehmann · Glenville, US
• Wendy Wen-Ling Lin · Niskayuna, US
• Youdong Zhou · Mont-Laurier, CA
• Shu Ching Quek · Clifton Park, US
• Grama Praveen · Clifton Park, US
• Bowden Kirkpatrick · Niskayuna, US
• Robert Michael Zirin · Marblehead, US
• Gang Qian · McLean, US

Key dates

• Filing date: Dec 12, 2008
• Grant date: Feb 22, 2011
• Expiry date: May 13, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49337
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbine blade includes at least two blade segments. Each blade segment includes first and second shells joined together, a base region, at least one joint region including a mating face. Each of the first and second shells includes an outer skin, a base spar cap attached to an inner surface of the outer skin in the base region, a joint spar cap attached to the inner surface of the outer skin in the joint region and adjacent to at least a portion of the base spar cap. The joint spar cap includes holes in the mating face of the joint region. The turbine blade further includes fasteners within the holes for securing the at least two blade segments together.