High temperature rectangular exhaust duct expansion joint

Details High temperature rectangular exhaust duct expansion joint High temperature rectangular exhaust duct expansion joint

1995-10-18

1997-08-05

Melius, Terry Lee

Pipe joints or couplings

With casing, lining or protector

Insulated

285229, 285301, 285224, F16L 1112

Patent

active

056534744

ABSTRACT:
A high temperature rectangular exhaust duct expansion joint structure for securement to a high temperature gas stream and particularly, but not exclusively, a turbine engine exhaust duct. The support flange structure incorporated in the duct has a connecting flange which defines opposed side walls of the rectangular support flange structure. A T-shape radial web is connected to an outer surface of the connecting flange. The radial web has a vertical wall component and a transverse end component extending beyond opposed sides of the vertical wall component and is connectable to a flexible membrane of the joint structure. The support flange has reinforced corner sections wherein the connecting flange and the vertical wall component of the T-shape radial web are of increased thickness to reduce thermal stress in the corner sections and to effectively redistribute the stress in the support flange.

REFERENCES:
patent: 3730566 (1973-05-01), Kazmierski, Jr. et al.
patent: 3811714 (1974-05-01), Pintard
patent: 4140338 (1979-02-01), Kazmierski, Jr. et al.
patent: 4848803 (1989-07-01), Bachmann
patent: 5209503 (1993-05-01), Heibel et al.
patent: 5358284 (1994-10-01), Broyles
patent: 5378026 (1995-01-01), Ninacs et al.

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