Optimized blade root profile for steam turbine blades

Details Optimized blade root profile for steam turbine blades Optimized blade root profile for steam turbine blades

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/30 (2006.01)

Patent

CA 2063634

56,004 ABSTRACT OF THE DISCLOSURE A turbine blade includes an airfoil portion, a platform portion from which the airfoil portion extends upwardly, and a root portion extending downwardly from the platform portion, the root portion includes in descending order an upper-most root neck, an intermediate root neck, and a lower-most root neck, an upper-most lug being formed beneath the upper-most root neck, an intermediate lug being formed beneath the intermediate neck, and a lower- most lug being formed beneath the lower-most root neck. The upper-most neck includes a first top radius R1 and a second lower radius R2, wherein a length of R1 is about 30% greater than a length of R2.

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