Systems and methods for modifying modal vibration associated with a turbine
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United States of America Patent
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Aug 28, 2012
Grant Date -
Nov 19, 2009
app pub date -
May 16, 2008
filing date -
May 16, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Shroud assemblies and methods for modifying modal vibrations associated with a turbine are described. A shroud assembly includes an inner shroud and an outer shroud. The inner shroud includes a body with a first end portion, a second end portion opposite to the first end portion, an upper surface and a lower surface, wherein the lower surface is adjacent to a plurality of rotating turbine blades. The inner shroud further includes at least two rails formed on the upper surface and extending between the first end portion and the second end portion, wherein an impingement cooling area is defined between the at least two rails. Additionally, the inner shroud includes at least one cross-member formed on the upper surface in a direction transverse to the at least two rails.
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