TURBOMACHINE BLADE OR VANE Russian patent published in 2008 - IPC F01D5/18 

FIELD: mechanics.

SUBSTANCE: assembly incorporating rotor and defining rotor machine blade or vane, its rotor running about axis X, comprises inner space limited by first and second walls facing each other. Aforesaid inner space has inlet and outlet holes and forms a coolant fluid passage from the said inlet to outlet hole. Inner space has also at least first and second ribs. The first ribs extend from the first wall and pass in fact in parallel to form first channels for fluid medium to pass therein from the front end of the first ribs to rear end of the said ribs. Second ribs extend from the second wall to form second channels for fluid medium to pass from the front end of the second ribs to rear end of the said ribs. The said first and second ribs intersect nearby the said rear end so that the said first and second channels form common outlet channels defined by the flow area. Every such common outlet channel incorporates a device designed to reduce flow area nearby its rear end. Note that first and second ribs feature the main thickness all along their length and, at their intersection, they have thickness exceeding the main one that is required to reduce aforesaid area of the said common channel flow area.

EFFECT: invention allows reducing aerodynamic losses in coolant medium, increases durability of blades an vanes as well as their resistance against dust effects.

22 cl, 5 dwg