Rotor blade arrangement for axial flow turbine - uses blades with hooked base below rectangular flange for strong connection when ring is complete

摘要

Each blade for the rotor of an axial flow turbine extends from a base (5) with a necked part immediately below a rectangular flange (7). Each base is inserted into a radial opening (12) through the periphery of the rotor body so that it enters a ring shaped groove (3) in the rotor body. Each base is hammer head shaped and the larger dimension (b3) of the flange is larger than the thickness of the base. After the last blade has been inserted, to complete the ring of blades, they are all shifted for half the pitch in the peripheral direction so that they are completely locked against the inside surface of the groove. USE/ADVANTAGE - Rotor blades for high-speed turbine of max. strength, permitting high speed operation.