TURBINE BLADE

PROBLEM TO BE SOLVED: To provide a turbine blade having improved assembling efficiency while securing the contact area of tie bosses. SOLUTION: The turbine blade is inserted into a disc groove 9 of a turbine disc 8 in the direction of a rotor shaft, where the tie bosses 5, 6 contact each other with...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA KENJU, KUDO TAKESHI, SAKAGUCHI TOMONORI, YAMASHITA MINORU, YODA HIDEO
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 provide a turbine blade having improved assembling efficiency while securing the contact area of tie bosses. SOLUTION: The turbine blade is inserted into a disc groove 9 of a turbine disc 8 in the direction of a rotor shaft, where the tie bosses 5, 6 contact each other with the re-twist of a blade profile portion 2 during the rotation of a rotor to connect adjacent blades to each other. A cutout portion 28 is provided on the steam outlet side of a contact face 23 with the tie boss 6 on the adjacent blade belly side of the tie boss 5 on the back side. A cutout portion 25 is provided on the steam inlet side of a contact face 22 with the tie boss 5 on the adjacent blade back side of the tie boss 6 on the belly side. The cutout portions 25, 28 are formed so that a gap is formed between the tie bosses 5, 6 of the opposed adjacent blades in view from an inserting direction I of a blade implanted portion 7 when the adjacent blades are turned down in the direction of isolating each other in a range of rattling between the blade implanted portion 7 and the disc groove 9. COPYRIGHT: (C)2007,JPO&INPIT