Gas turbine nozzle vane insert and methods of installation

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874728

Miller, William John ^[1]; Predmore, Daniel Ross ^[2]; Placko, James Michael ^[3]

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1. Simpsonville, SC
2. Clifton Park, NY
3. West Chester, OH

A pair of hollow elongated insert bodies are disposed in one or more of the nozzle vane cavities of a nozzle stage of a gas turbine. Each insert body has an outer wall portion with apertures for impingement-cooling of nozzle wall portions in registration with the outer wall portion. The insert bodies are installed into the cavity separately and spreaders flex the bodies toward and to engage standoffs against wall portions of the nozzle whereby the designed impingement gap between the outer wall portions of the insert bodies and the nozzle wall portions is achieved. The spreaders are secured to the inner wall portions of the insert bodies and the bodies are secured to one another and to the nozzle vane by welding or brazing.

• Research Organization: General Electric Co., Schenectady, NY (United States)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6450759
• OSTI ID: 874728
• Country of Publication: United States
• Language: English

Related Subjects

gas
turbine
nozzle
vane
insert
methods
installation
pair
hollow
elongated
bodies
disposed
cavities
stage
outer
wall
portion
apertures
impingement-cooling
portions
registration
installed
cavity
separately
spreaders
flex
engage
standoffs
designed
impingement
gap
achieved
secured
inner
welding
brazing
gas turbine
wall portion
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