INTEGRAL SHROUD BLADE AND ASSEMBLY STRUCTURE - 株式会社日立製作所

Title:

INTEGRAL SHROUD BLADE AND ASSEMBLY STRUCTURE

Document Type and Number:

Japanese Patent JP3211639

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To hold the connecting condition of an adjacent blade at an almost constant level, and also obtain a high vibration damping effect, and connect blades of whole circumference to each other without a gap, and to improve reliability.
SOLUTION: A projection part 10 which extends in a circumferential direction is formed on the back side of an integral shroud 4, and also a recessed part 11 which extends in the circumferential direction is formed on the barrel side thereof. The projection part 10 and the recessed part 11 which are formed as an adjacent blade are engaged with each other, and the content surface of the projection part 10 and the recessed part 11 is formed as a surface which extends in a circumferential direction. A means for generating almost constant push force, namely, bearing force is arranged on the contact surface.

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Inventors:

Kiyoshi Namura
Masakazu Takasumi
Eiji Saitoh
Kazuo Ikeuchi

Application Number:

JP23643595A

Publication Date:

September 25, 2001

Filing Date:

September 14, 1995

Export Citation:

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Assignee:

株式会社日立製作所

International Classes:

F01D5/22; F01D5/20; (IPC1-7): F01D5/22

Domestic Patent References:

JP586802A
JP4104901A
JP7229404A
JP5463802U

Attorney, Agent or Firm:

Yasuo Sakuta

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