Cooled turbine vane

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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415115, F01D 508

Patent

active

042970776

ABSTRACT:
A hollow gas turbine vane is shown enclosing, in spaced relation, a vane insert for receiving cooling air. The insert has a plurality of apertures for selectively directing jets of the cooling air against the internal walls of the vane. A portion of the air is discharged from within the vane chamber through a slit in the trailing edge which contains cooling pins extending transversely thereacross to maintain the slit dimensionally stable and also induce turbulence in the exhausting cooling air to improve its cooling effectiveness. Certain apertures in the insert adjacent the trailing edge are selectively directed to cause jets of the cooling air to impinge at the base of certain of the pins in the inlet area of the slit to promote turbulence in the air entering the slit and adjacent the internal face, thereby maximizing heat transfer from the slit walls to the air.

REFERENCES:
patent: 3628885 (1971-12-01), Sidenstick et al.
patent: 3767322 (1973-10-01), Durgin et al.
patent: 3844678 (1974-10-01), Sterman et al.
patent: 3846041 (1974-11-01), Albani
patent: 4056332 (1977-11-01), Meloni

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