Turbine moving blade

Abstract

Abstract PURPOSE: To reduce a secondary flow loss by forming the surface of a base of each rotary blade in a curved surface following the shape of passage between blades as well as inserting a partition, with a curved surface of the same shape as that of said surface, between facing surfaces of adjacent bases. CONSTITUTION: The surface of a base 17 of each rotary blade is formed in a curved surface along a curved passage between blades. A partition 18 has a curved surface of the same shape as the base 17 of the rotary blade and its blade spanwise length is longer than that of said base 17. Rotary blades and partitions 18 are alternately fitted in treelike convex grooves 19a made along the outer circumference of a wheel disc 19 in such a manner as to stick fast to each other. Instead of the partitions 18, projecting plates may be provided blade spanwise from the bottom of the passage. Through these arrangements, any flow around side walls of rotary blades approaches a laminar flow to reduce a harmful secondary flow. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Takeshi Sato
• 👤 Yoshiaki Arima
• 👤 Norio Yasugadaira

Bibliographic Details