Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade supported radial tip ring and static part
Reexamination Certificate
2007-09-25
2007-09-25
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade supported radial tip ring and static part
C416S09700R
Reexamination Certificate
active
11549767
ABSTRACT:
A gas turbine blade (1) has a shroud (3) which is cooled by different cooling mechanisms in various regions (A, B, C) according to the different thermal load. In a first region (A), in a fin (8), bores are provided, by which a convective cooling of the fin and a film cooling of the hot gas side of the fin are implemented. A second region (B) is cooled by impingement cooling by a cooling air stream from a duct in the radially opposite stator housing. A third region (C) has a plurality of bores running parallel which run from a cooling duct of a cooling system for the blade leaf to the radially outer surface of the shroud. A cooling air stream flowing through these bores causes a convective cooling of this region.
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ALSTOM Technology Ltd.
Cermak Adam J.
Cermak Kenealy & Vaidya LLP
Nguyen Ninh H.
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