Patent ID: 6152695
Filing Date: 2000-11-28
Classification: F01D,F05D

Abstract:
A gas turbine moving blade comprising:a blade having a terminal end and a base portion;a shroud at said terminal end of said blade, said shroud having mutually opposing side portions, a lower surface portion and a peripheral portion;an enlarged cavity in said shroud;a cooling passage extending in said blade from said base portion to said terminal end, connecting with said enlarged cavity, and leading cooling air into said shroud, said cooling passage being formed by a cavity extending in said blade over the entire length of said blade, and said cavity having a wall provided with a plurality of pin fins; anda plurality of holes provided in both of said mutually opposing side portions of said shroud so as to open downwardly in said lower surface portion of said shroud at said peripheral portion, said enlarged cavity connecting with said plurality of holes so that air led into said shroud through said cooling passage flows out of said peripheral portion of said shroud.