Controlled leakage shroud panel

Details Controlled leakage shroud panel Controlled leakage shroud panel

1995-06-06

1997-06-24

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

F01D 1116

Patent

active

056412673

ABSTRACT:
A shroud panel for a turbine shroud includes forward and aft hooks which are used to support the panel radially above a plurality of turbine rotor blades. The panel forward hook has radially outer and inner lands, with the outer land being defined by a plurality of pads circumferentially spaced apart from each other by a respective recess. The panel forward hook is sized to engage the complementary forward slot of the turbine shroud substantially concentrically therein. The pads and recess restrict flow leakage around the panel forward hook for maintaining backflow margin and improving clearance control.

REFERENCES:
patent: 4101242 (1978-07-01), Coplin et al.
patent: 4303371 (1981-12-01), Eckert
patent: 4529355 (1985-07-01), Wilkinson
patent: 4573866 (1986-03-01), Sandy, Jr. et al.
patent: 5169287 (1992-12-01), Proctor et al.
patent: 5174714 (1992-12-01), Plemmons et al.
patent: 5188506 (1993-02-01), Creevy et al.
patent: 5197853 (1993-03-01), Creevy et al.
patent: 5205708 (1993-04-01), Plemmons et al.
patent: 5273396 (1993-12-01), Albrecht et al.
patent: 5423659 (1995-06-01), Thompson
General Electric Company, CF34-3A1 gas turbine engine in production more than 1 year; 3 figures showing high pressure turbine shrouds and unpublished proposed temporary fix.

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