FIELD: engines and pumps.
SUBSTANCE: steam-turbine working blade 20 comprises aerodynamic part 42 with root part 44 attached to one end of the latter. Shank 40 with slot lock and skewed axial inlet extends from root part 44. End part 46 is attached to aerodynamic part 42, opposite the root part 44. Band 48 is made integral with end part 46. Band 48 has first flat part 52, second flat part 54 and recess 56 arranged laterally between said first and second flat parts. Recess 56 is located below first flat part 52 at first end whereat first flat part and recess 56 adjoin and ups to second flat part 54 at second end whereat second flat part and recess adjoin. Second flat part 54 is elevated above first flat part 52. Band 48 is located at 10 to 30 degrees relative to end part 46.
EFFECT: increased rpm at steam-turbine low-pressure stage.
10 cl, 5 dwg
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