Steam cooling system for a gas turbine

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874800

Wilson, Ian David ^[1]; Barb, Kevin Joseph ^[2]; Li, Ming Cheng ^[3]; Hyde, Susan Marie ^[4]; Mashey, Thomas Charles ^[5]; Wesorick, Ronald Richard ^[6]; Glynn, Christopher Charles ^[7]; Hemsworth, Martin C ^[3]

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1. Mauldin, SC
2. Halfmoon, NY
3. Cincinnati, OH
4. Schenectady, NY
5. Coxsackie, NY
6. Albany, NY
7. Hamilton, OH

The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows.

• Research Organization: General Electric Co., Schenectady, NY (United States)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6464461
• OSTI ID: 874800
• Country of Publication: United States
• Language: English

Related Subjects

steam
cooling
gas
turbine
circuit
bore
tube
assembly
supplying
circumferentially
spaced
radial
tubes
coupled
supply
elbows
transitioning
flow
axial
direction
adjacent
rim
rotor
manifold
segments
located
1-2
spacer
buckets
stages
spent
return
flows
plurality
disposed
forward
crossover
couple
stage
axially
extending
convey
via
gas turbine
steam flow
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