BLADE

Japanese Patent JP2017180463

A

PROBLEM TO BE SOLVED: To provide a blade used at a working fluid passage of a turbo engine.SOLUTION: A blade 1 extends from a base part to an extremity end along a span width direction and has a negative pressure surface, a positive pressure surface, a front edge [4] and a rear edge [5]. The blade 1 has a blade aerodynamic body, the aerodynamic body has a negative pressure surface side surface, a positive pressure surface side surface, a front edge, a rear edge and the extremity end part. The extremity end part of the aerodynamic body has an extremity end cross section and a cross section contour enclosing the extremity end cross section. A rim 3 is arranged at the extremity end part of the aerodynamic body, extends up to the extremity end part of the blade, extends over the front edge 4 of the blade along the cross section contours at the positive pressure surface and the negative pressure surface, and the rim 3 defines an extremity end cavity released at the extremity end of the blade. The rim 3 is released at the rear edge 5 of the blade so as to cause the extremity end cavity 7 to be released at the rear edge of the blade. The fluid duct having the discharging orifices 8, 9 is opened to the bottom part 6 of the extremity end part cavity 7 through the discharging orifices 8, 9.SELECTED DRAWING: Figure 3

NAIK SHAILENDRA
CHRISTIAN SOMMER

JP2017065106A

October 05, 2017

March 29, 2017

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ANSALDO ENERGIA SWITZERLAND AG

F01D5/14; F01D5/18; F02C7/18

Einzel Felix-Reinhard
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima

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