Power plants – Combustion products used as motive fluid – With safety device
Patent
1977-06-03
1979-01-30
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
With safety device
60 3966, 415114, 415115, 415116, 416 96R, 416 97R, F02C 716, F02C 718
Patent
active
041365160
ABSTRACT:
The blades of a gas turbine are primarily cooled by the circulation of a coolant through the hollow interiors thereof by the thermosiphon principle. Each hollow blade interior is also placed in fluid communication with a secondary coolant source, but secondary coolant flow is precluded by a plug filling the inlet fluid passage. Similar plugs fill apertures in the form of casting holes through each blade airfoil portion, the holes serving to discharge the secondary coolant from the blade interior. The plugs are fabricated of a material having a lower melting point temperature than that of the remainder of the blade airfoil portion such that, in the event of failure in the primary cooling system, the plugs will melt, thereby permitting the secondary coolant to rush through the blade and provide internal cooling thereof.
REFERENCES:
patent: 2565594 (1951-08-01), Constant
patent: 2782000 (1957-02-01), Ledinegg
patent: 3164367 (1965-01-01), Lynch
patent: 3623825 (1971-11-01), Schneider
patent: 3756020 (1973-09-01), Moskowitz et al.
patent: 3990837 (1976-11-01), Snell
Japikse et al., "Mixed Convection Thermosyphon and Gas Turbine Blade Cooling", ASME Paper No. 73 WA/HT26.
Garrett Robert E.
General Electric Company
Lampe, Jr. Robert C.
Lawrence Derek P.
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