High temperature rectangular exhaust duct expansion joint
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United States of America Patent
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-
Aug 5, 1997
Grant Date -
N/A
app pub date -
Oct 18, 1995
filing date -
Oct 18, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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