Title:
TURBINE BLADE STRUCTURE
Document Type and Number:
Japanese Patent JPS58220902
Kind Code:
A
Abstract:
PURPOSE:To reduce drain errosion of a movable blade which has not a projection part by forming a projection part on the working fluid inlet side at the top edge of two - 1/2 pieces of the movable blade at the final stage and concentrating the drain errosion to the projection part. CONSTITUTION:Movable blades 1 made of Ti-alloy are implanted onto the outer periphery of a turbine blade wheel 3, and a projection part 6 having a projection amount of 1-30mm. is formed over the length of 1/3 of the total length A of the movable blade 1 at the top edge of a working fluid inlet port side 5 on every four pieces of the movable blade. The number of the projection parts 6 to be installed in the interval is determined so that the drain errosion preventing effect may be obtained with the least number of piece.
Inventors:
SUZUE SHINICHI
Application Number:
JP10336082A
Publication Date:
December 22, 1983
Filing Date:
June 16, 1982
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
F01D5/14; F01D5/28; (IPC1-7): F01D5/14
Attorney, Agent or Firm:
Kiyoshi Inomata
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