ROTARY MACHINE BLADE HAVING AN ASYMMETRIC PART-SPAN SHROUD AND METHOD OF MAKING SAME

摘要

A method of manufacturing a blade for use with a rotary machine includes coupling a suction-side section of a part-span shroud to a suction-side surface of an airfoil of the blade. A first point of the airfoil suction-side surface, defined where a trailing edge of the suction-side section intersects the airfoil suction-side surface, is upstream from a second point, defined where a throat intersects the airfoil suction-side surface. A third point, defined where a leading edge of the suction-side section intersects the airfoil suction-side surface, is downstream from a fourth point, defined at a leading edge of the blade. The method also includes coupling a pressure-side section of the part-span shroud to a pressure-side surface of the airfoil. A fifth point of the airfoil pressure-side surface, defined where a trailing edge of the pressure-side section intersects the airfoil pressure-side surface, is downstream from the first point.

主权项

1. A method of manufacturing a blade having a part-span shroud for use with a rotary machine, said method comprising:
coupling a suction-side section of the part-span shroud to a suction-side surface of an airfoil of the blade, wherein the suction-side section is positioned such that:
a first point of the airfoil suction-side surface, defined where a trailing edge of the suction-side section intersects the airfoil suction-side surface, is upstream from a second point of the airfoil suction-side surface, defined where a throat intersects the airfoil suction-side surface when the rotary machine is in operation; anda third point of the airfoil suction-side surface, defined where a leading edge of the suction-side section intersects the airfoil suction-side surface, is downstream from a fourth point of the airfoil suction-side surface, defined at a leading edge of the blade; and coupling a pressure-side section of the part-span shroud to a pressure-side surface of the airfoil, wherein the pressure-side section is positioned such that:
a fifth point of the airfoil pressure-side surface, defined where a trailing edge of the pressure-side section intersects the airfoil pressure-side surface, is downstream from the first point.