Debris trap in a turbine cooling system

Patent · Tue Jan 01 04:00:00 EST 2002

OSTI ID:874799

Wilson, Ian David ^[1]

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1. Clifton Park, NY

In a turbine having a rotor and a plurality of stages, each stage comprising a row of buckets mounted on the rotor for rotation therewith; and wherein the buckets of at least one of the stages are cooled by steam, the improvement comprising at least one axially extending cooling steam supply conduit communicating with an at least partially annular steam supply manifold; one or more axially extending cooling steam feed tubes connected to the manifold at a location radially outwardly of the cooling steam supply conduit, the feed tubes arranged to supply cooling steam to the buckets of at least one of the plurality of stages; the manifold extending radially beyond the feed tubes to thereby create a debris trap region for collecting debris under centrifugal loading caused by rotation of the rotor.

• Research Organization: General Electric Company (Schenectady, NY)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6464455
• OSTI ID: 874799
• Country of Publication: United States
• Language: English

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annular
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centrifugal
collecting
communicating
comprising
conduit
connected
cooled
cooling
create
debris
extending
feed
improvement
loading
location
manifold
mounted
outwardly
partially
plurality
radially
region
rotation
rotor
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stage
stages
steam
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trap
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turbine