Westinghouse Electric Corporation

Ronald E Warner

Albert J Partington

Abel D Grijalba

Francis J Healey

A circular array of rotatable blades formed from blades having an integral shroud with a leading planar surface and a trailing planar surface, the leading planar surface being generally parallel to an axial radial plane passing through the center of the root of the blade and the trailing planar surface, if extended, intersecting the axial radial plane passing through the center of the root of the blade to form an angle generally equal in degrees to 360 divided by the number of blades forming the circular array.

Method for assembling in a circular array turbine blades each with an

Turbine blade with integral shroud

A rotor for an axial flow, elastic fluid turbine apparatus. The rotor has a rotating shaft having a plurality of circumferentially spaced rotating blades thereon. Each blade has a platform portion having a convex arcuate surface and a concave arcuate surface. The convex arcuate surface has a radius greater than the radius of the concave arcuate surface so that individual rotating blades can be removed without removing the casing.

Method for removing rotatable blades without removing the casting of a

A rotor for an axial flow, elastic fluid turbine apparatus. The rotor has a rotating shaft having a plurality of circumferentially spaced rotating blades thereon. Each blade has a platform portion having a convex arcuate surface and a concave arcuate surface. The convex arcuate surface has a radius greater than the radius of the concave arcuate surface.

Turbine rotating blade

A vibration, damper, or snubber device is disposed on the radially outward surface of a shroud member mounted on a turbine rotor. The rotor has an annular array of twisted blades connected together to form blade groups by a first and a second shroud member. The vibration damper, or snubber, is mounted on the first shroud member and extends therefrom across a gap between the shroud members to circumferentially overlap a portion of the second shroud member. A predetermined axial gap is defined between a portion of the second shroud and the snubber. When an untwist motion is imposed upon the blades due to rotation of the rotor, the axial gap closes and an abutment between the snubber and the second shroud occurs to inhibit further untwist motion and to simultaneously provide a friction interface to inhibit circumferential motion between the second shroud and the vibration damper.

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Media, PA, United States of America

Ronald E Warner