Water-cooled turbine blade

Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...

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416 97R, F01D 518

Patent

active

041181450

ABSTRACT:
A gas turbine blade is shown having channels subjacent the surface for a coolant to flow therethrough from a radially inner inlet to a discharge port adjacent the blade tip. The channels include intermediate enlarged chambers wherein a portion of the coolant is permitted to vaporize, so that the smaller diameter coolant distributing channels remain substantially liquid full. The vapor from the chambers is exhausted at a position radially inwardly of the blade tip and preferably below the blade platform.

REFERENCES:
patent: 2883151 (1959-04-01), Dolida
patent: 3816022 (1974-06-01), Day
patent: 3844679 (1974-10-01), Grondahl et al.
patent: 3849025 (1974-11-01), Grondahl
patent: 3902819 (1975-09-01), Holchendler et al.

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