Moving blade of steam turbine

Details Moving blade of steam turbine Moving blade of steam turbine

1979-11-01

1982-08-03

Freeh, William L.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Having wear liner, sheathing or insert

F01D 514

Patent

active

043425429

ABSTRACT:
A moving blade for use in a steam turbine has a turbine rotor carrying a multiplicity of radially outwardly extending moving blades, each moving blade being provided at its leading edge of the radially outer end thereof with an anti-erosion plate attached by welding. The turbine blade has thicknesswise protrusions formed on both surfaces thereof at a portion near the base of the anti-erosion plate where it is attached to the moving blade. Thanks to these thicknesswise protrusions, the moving blade has such a radial distribution of cross-sectional area that the cross-sectional area is greater at the portion where the thicknesswise protrusions are formed than at other portions which are adjacent to the above-mentioned portion of the moving blade in the radial direction. As a result, the stresses at the portion of the moving blade near the base of the anti-erosion plate are reduced.

REFERENCES:
patent: 3412611 (1968-11-01), Eccles et al.
patent: 3561886 (1971-02-01), Kreischer, Jr. et al.
patent: 3796513 (1974-03-01), Jonas

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