TURBINE ROTOR BLADE VIBRATION CONTROL DEVICE OF GAS TURBINE

PROBLEM TO BE SOLVED: To ensure the sealing performance while maintaining the vibration preventive effect of a turbine rotor blade. SOLUTION: Each turbine rotor blade 8 in which a platform is expanded at a root of a blade part 9 is arranged in the circumferential direction of a turbine disk 12 and m...

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Bibliographische Detailangaben
1. Verfasser:	MIYATA JINICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To ensure the sealing performance while maintaining the vibration preventive effect of a turbine rotor blade. SOLUTION: Each turbine rotor blade 8 in which a platform is expanded at a root of a blade part 9 is arranged in the circumferential direction of a turbine disk 12 and mounted thereon to form a gas turbine. A forward end face in the rotational direction of a platform 10 of each turbine rotor blade 8 forms a flat surface 15 along the radial direction. A pocket 17 in which a tapered surface 16 to 60 deg. inward of the flat surface 15 is formed is provided on a back side of a rear end part in the rotational direction of the platform 10. A damper 18 or regular triangular prismatic shape is built in the pocket 17. The damper 18 is pressed against the flat surface 15 and the tapered surface 16 by the centrifugal force.