Offset Coriolis turbulator blade
AssigneeGeneral Electric Company
InventorsChing-Pang Lee, Wenfeng Lu
Life of this patent
Estimating the term…
Abstract
A turbine rotor blade includes an airfoil having pressure and suction sidewalls extending longitudinally in span from root to tip. The sidewalls are spaced apart between leading and trailing edges and joined together by longitudinal partitions defining flow channels therein. Rows of first and second slant turbulators extend from one of the sidewalls in one of the channels and are offset longitudinally. The first and second turbulators overlap chordally to eliminate an axial gap therebetween while maintaining a radial gap for tripping cooling air channeled along the span of the channel.
Claims28
A turbine rotor blade comprising:
- an airfoil, platform, and dovetail integrally joined together;
- said airfoil including pressure and suction sidewalls extending longitudinally in span from a root at said platform to a tip;
- said sidewalls being spaced laterally apart between leading and trailing edges and joined together by chordally spaced apart partitions extending longitudinally between said root and tip to define a plurality of outward and inward flow channels for channeling a coolant therethrough longitudinally outwardly from said root to tip and longitudinally inwardly from said tip to said root, respectively;
- and
- one of said outward channels includes a forward row of first slant turbulators extending from said suction sidewall and all said first turbulators being substantiallys identical to each other in said forward row, and an aft row of substantially identical second slant turbulators extending from said suction sidewall and offset longitudinally and overlapping chordally said first turbulators, and said second turbulators slant longitudinally inwardly toward said root and said trailing edge.
A turbine rotor blade comprising:
- an airfoil, platform, and dovetail integrally joined together;
- said airfoil including pressure and suction sidewalls extending longitudinally in span from a root at said platform to a tip;
- said sidewalls being spaced laterally apart between leading and trailing edges and joined together by chordally spaced apart partitions extending longitudinally between said root and tip to define a plurality of outward and inward flow channels for channeling a coolant therethrough longitudinally outwardly from said root to tip and longitudinally inwardly from said tip to root, respectively;
- at least one of said outward channels including forward and aft rows of first and second slant turbulators extending from said suction sidewall, and being offset longitudinally;
- all of said first turbulators in said forward row extend aft toward said trailing edge to chordally overlap an opposite second turbulator in said aft row, and said second turbulators slant longitudinally inwardly toward said root and said trailing edge.
Dependencies are inferred from the claim text.