Turbine blade platform seal

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873925

Zagar, Thomas W ^[1]; Schiavo, Anthony L ^[2]

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1. Winter Springs, FL
2. Oviedo, FL

A rotating blade group 90 for a turbo-machine having an improved device for sealing the gap 110 between the edges 112,114 of adjacent blade platforms 96,104. The gap 110 between adjacent blades 92,100 is sealed by a seal pin 20 its central portion 110 and by a seal plate 58,60 at each of the front 54 and rear 56 portions. The seal plates 58,60 are inserted into corresponding grooves 62,64 formed in the adjacent edges 112,114 of adjoining blades 92,100 and held in place by end plates 40,42. The end of the seal plates 58,60 may be chamfered 78,80 to improve the seal against the end plate 40,42. The seal pin 20 provides the required damping between the blades 92,100 and the seal plates 58,60 provide improved sealing effectiveness.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: FC21-95MC32267
• Assignee: Siemens Westinghouse Power Corporation (Orlando, FL)
• Patent Number(s): US 6273683
• OSTI ID: 873925
• Country of Publication: United States
• Language: English

Related Subjects

turbine
blade
platform
seal
rotating
90
turbo-machine
improved
device
sealing
gap
110
edges
112
114
adjacent
platforms
96
104
blades
92
100
sealed
20
central
portion
plate
58
60
front
54
rear
56
portions
plates
inserted
corresponding
grooves
62
64
formed
adjoining
held
40
42
chamfered
78
80
improve
provides
required
damping
provide
effectiveness
rotating blade
provide improved
turbine blade
central portion
adjacent blades
seal plate
corresponding groove
improved sealing
improved seal
improved device
provide improve
platform seal
blade platform
blade platforms
/416/277/