Drum rotor for an impulse steam turbine having blades mounted in longitudinal grooves, and an impulse steam turbine including such a motor
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United States of America Patent
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May 3, 1994
Grant Date -
N/A
app pub date -
Jan 7, 1993
filing date -
Jan 8, 1992
priority date (Note) -
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Abstract
A drum rotor for an impulse steam turbine having moving wheels constituted by rotor blades whose roots are provided with dovetails are locked in dovetail shaped grooves formed in the rotor. The grooves are longitudinal over at least a portion of the rotor. The roots of the blades of a moving wheel are separated from the roots of the blades of an adjacent moving wheel by dovetail shaped spacers. An optimum filling of the longitudinal grooves is effected for better interconnection of the caps of the rotor blades.
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