Gas turbine blade cooling structure

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 96R, F01D 518

Patent

active

042932750

ABSTRACT:
A blade cooling construction comprising a cylindrical hollow and a nozzle, both of which are defined in and by the blade. The hollow and nozzle create a vortex of cooling gas introduced into the blade, which gas whirls about the axis of the hollow by tangentially injecting the cooling gas into the hollow through the nozzle. A portion of the cooling gas is lowered in temperature, and the other portion is raised in temperature. The lower temperature cooling gas is introduced first to a central portion of the blade height which is higher in temperature than the remaining portions of the blade. The higher temperature cooling gas is introduced to a lower temperature portion of the blade.

REFERENCES:
patent: 1952281 (1934-03-01), Ranque
patent: 2915279 (1959-12-01), Chamberlin
patent: 3111302 (1963-11-01), Bowmer
patent: 3656863 (1972-04-01), De Feo
patent: 3807892 (1974-04-01), Frei et al.
patent: 3864058 (1975-02-01), Womack

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