Turbine rotor blade

US10781703B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Fathi Ahmad · Kaarst, DE
• Radan Radulovic · Bochum, DE

Key dates

• Filing date: Oct 22, 2015
• Grant date: Sep 22, 2020
• Expiry date: Feb 17, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/712
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbine rotor blade for a thermal continuous flow machine, wherein a transition region and an aerodynamically shaped turbine blade connected to same, follows a blade foot for securing the turbine rotor blade to a rotor along a notional blade longitudinal axis of the turbine rotor blade from bottom to top. The blade foot has two flat end surfaces facing one another, two contoured side surfaces facing one another and joining the two end surfaces to one another, in which side surface at least one respective carrying edge is formed by creating dovetail- or fir tree-like end surface contour. The carrying edges become free edges or extend into the transition region via concave rounded portions. A channel bordering one of the two end sides is arranged in at least one concave rounded portion, the extension of which channel along the side surface is less than that of the carrying edge.