STEAM-TURBINE ENGINE LOW-PRESSURE STAGE WORKING BLADE Russian patent published in 2014 - IPC F01D5/14 F01D5/22

Abstract RU 2515582 C2

FIELD: engines and pumps.

SUBSTANCE: steam turbine (10) working blade (20) comprises airfoil section (42). Blade butt section (44) is secured to one end of airfoil section (42). Dovetail part (40) extends from butt section (44) and includes skewed part (40) with axial twist that features skew angle equal to 19 degrees. Rim section (46) is attached to airfoil section (42) at the end opposite the butt section (44). Airfoil shroud platform (48) is made integral with rim section part (46). Airfoil shroud platform (50) is secured to airfoil section (42) mid part between airfoil ends. Working blade (20) features outlet circular cross-section making about 4.43 m² or larger. Airfoil section (42) features length making about 68.1 cm or larger.

EFFECT: optimum aerodynamics and mechanical characteristics.

9 cl, 7 dwg

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RU 2 515 582 C2

Authors

Riaz Mukhammad Sakib

Statopulos Dimitrios

Dates

2014-05-10—Published

2009-10-13—Filed