System for cooling seal rails of tip shroud of turbine blade
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United States of America Patent
Stats
-
Jan 22, 2019
Grant Date -
Oct 19, 2017
app pub date -
Apr 14, 2016
filing date -
Apr 14, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A turbine blade includes a tip shroud having a seal rail. The seal rail includes a tangential surface extending between tangential ends. The turbine blade includes a root portion configured to couple to a rotor and an airfoil portion extending between the root portion and the tip shroud. The seal rail includes a cooling passage extending along a length of the seal rail. The cooling passage is fluidly coupled to a cooling plenum to receive a cooling fluid via an intermediate cooling passage extending between the cooling passage and a cooling plenum. The seal rail includes cooling outlet passages fluidly coupled to the cooling passage. The cooling outlet passages are disposed within the seal rail and extend between the cooling passage and the tangential surface of the seal rail. The cooling outlet passages are configured to discharge the cooling fluid from the tip shroud via the tangential surface.
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