Wheelspace windage cover plate for turbine

Patent · 31 December 2001

OSTI ID:874966

Lathrop, Norman Douglas ^[1]

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1. Ballston Lake, NY

Windage cover plates are secured between the wheels and spacer of a turbine rotor to prevent hot flow path gas ingestion into the wheelspace cavities. Each cover plate includes a linear, axially extending body curved circumferentially with a radially outwardly directed wall at one axial end. The wall defines a axially opening recess for receiving a dovetail lug. The cover plate includes an axially extending tongue received in a circumferential groove of the spacer. The cover plate is secured with the tongue in the groove and dovetail lug in the recess. Lap joints between circumferentially adjacent cover plates are provided.

• Research Organization: General Electric Company (Schenectady, NY)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6499945
• OSTI ID: 874966
• Country of Publication: United States
• Language: English

Related Subjects

/416/
adjacent
axial
axially
axially extending
cavities
circumferential
circumferentially
cover
curved
defines
directed
dovetail
extending
flow
flow path
gas
groove
hot
ingestion
joints
lap
linear
lug
outwardly
path
plate
plates
prevent
provided
radially
received
receiving
recess
rotor
secured
spacer
tongue
turbine
wall
wheels
wheelspace
windage