EXHAUST DIFFUSER FOR TURBINE
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United States of America Patent
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Issued Date -
Sep 19, 2013
app pub date -
Mar 14, 2012
filing date -
Mar 14, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An exhaust diffuser for a turbine includes an inlet configured to receive exhaust gas from a last stage bucket of the turbine and an exhaust gas guide surface configured to guide the exhaust gas. A curvature of the guide surface comprises a first angle with respect to an axis of the turbine and a ratio of a guide surface axial length to the active length of the last stage bucket which is between about 0.45 to 0.70. A method of diffusing exhaust of a turbine includes energizing a boundary layer along a curved exhaust flow guide surface of an exhaust diffuser with over tip leakage of a last stage bucket of the turbine.
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