Liquid-cooled turbine bucket with enhanced heat transfer perform

Details Liquid-cooled turbine bucket with enhanced heat transfer perform Liquid-cooled turbine bucket with enhanced heat transfer perform

1977-03-23

1978-05-23

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

Changing state mass within or fluid flow through working...

416 96R, F01D 518

Patent

active

040908100

ABSTRACT:
Individual coolant passages in the airfoil portion of a liquid-cooled turbine bucket are each provided with a plurality of spanning elements spaced along, affixed in and extending across each passage whereby the main flow of liquid coolant moving in each such individual passage during turbine operation under the influence of centrifugal force is broken up. Each spanning element has one end thereof approximately centered in the region of the passage at that station therealong, which will be the most rearwardly disposed during rotation of the bucket in operation. In the embodiment described the spanning elements are cylindrical pins of circular cross-section disposed generally parallel to each other.

REFERENCES:
patent: 3619076 (1971-11-01), Kydd
patent: 3628880 (1971-12-01), Smuland et al.
patent: 3804551 (1974-04-01), Moore
patent: 3816022 (1974-06-01), Day
patent: 3819295 (1974-06-01), Hauser et al.
patent: 3856433 (1974-12-01), Grondahl et al.
patent: 4017210 (1977-04-01), Darrow

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