Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...
Patent
1995-08-01
1997-03-18
Kwon, John T.
Rotary kinetic fluid motors or pumps
With passage in blade, vane, shaft or rotary distributor...
416 97R, F04D 2938
Patent
active
056116624
ABSTRACT:
A cooling air circuit for the trailing edge cavity of a nozzle segment for a gas turbine includes a plurality of cooling sections radially spaced one from the other along the vane. Air flows radially inwardly and is turned by guide vanes for axial flow for impingement cooling of the trailing edge. The flow is such that vortices are formed and heat is carried away from the trailing edge by cooling flow directed forwardly from the trailing edge through another series of guide vanes. The rearward and forward sequential flows are provided in repeated patterns at radially spaced positions along the trailing edge until finally the cooling air flows through a trailing edge cavity outlet into a diaphragm. The diaphragm has channels for directing the cooling flow from the diaphragm at an angle into the wheelspace for cooling the seal cavity.
REFERENCES:
patent: 3301527 (1967-01-01), Kercher
patent: 3844679 (1974-10-01), Grondahl et al.
patent: 3849025 (1974-11-01), Grondahl
patent: 5052889 (1991-10-01), Abdel-Messeh
patent: 5253976 (1993-10-01), Cuhna
patent: 5320483 (1994-06-01), Cunha et al.
patent: 5340274 (1994-08-01), Cuhna
General Electric Co.
Kwon John T.
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