Method of forming a cooling air passage in a gas turbine station

Details Method of forming a cooling air passage in a gas turbine station Method of forming a cooling air passage in a gas turbine station

1998-09-01

1999-09-28

Kwon, John

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

219 6917, F04D 2938

Patent

active

059576570

ABSTRACT:
In a cooling air passage in a gas turbine stationary blade shroud a groove at a shroud end face is formed to extend along the shroud end face. An open portion of the groove is covered by a plug so as to form a cooling air passage. A cooling air passage in which the work accuracy is remarkably enhanced can thus be very easily worked. Preferably the cooling air passage is formed by electric discharge machining (EDM). The same process can be used to form an open portion of the groove, as well as any desired turbulators. The open portion of the groove is closed by a plug which is brazed or welded in place.

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