Turbine blade having a cooled tip shroud
AssigneeGeneral Electric Company
InventorRonald Scott Bunker
Life of this patent
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Abstract
A turbine blade having a cooled shroud comprises a blade attachment portion and a radially extended turbine airfoil integral with the blade attachment portion. The turbine airfoil has a plurality of cooling passages. A tip shroud is affixed to a top portion of the airfoil, the tip shroud having a plurality of circumferential cooling channels disposed substantially parallel to the rotation of the airfoil. Each circumferential cooling channel is in communication with a respective cooling passage and at least one exit port is in communication with at least one of the circumferential cooling channels.
Claims29
A turbine blade having a cooled shroud comprising:
- a blade attachment portion;
- a radially extended turbine airfoil integral with said blade attachment portion, said turbine airfoil having a plurality of cooling passages;
- a tip shroud affixed to a top portion of said airfoil, said tip shroud having a plurality of circumferential cooling channels disposed substantially parallel to the rotation of said airfoil wherein each circumferential cooling channel is in communication with a respective cooling passage;
- and
- at least one exit port in communication with at least one of said circumferential cooling channels.
12 A turbine blade in accordance with claim 1, wherein said tip shroud is made from two pieces welded together to generate said circumferential cooling passages.
A tip shroud for disposal upon a top portion of an airfoil having cooling passages, said tip shroud comprising:
- a plurality of circumferential cooling channels disposed substantially parallel to the rotation of said airfoil wherein each circumferential cooling channel is in communication with a respective cooling passage of said airfoil;
- and
- at least one exit port in communication with at least one of said circumferential cooling channels.
A turbine assembly comprising:
- a compressor;
- a combustor;
- an exhaust;
- and
- at least one turbine blade having a cooled shroud comprising a blade attachment portion;
- a radially extended turbine airfoil integral with said blade attachment portion, said turbine airfoil having a plurality of cooling passages;
- a tip shroud affixed to a top portion of said airfoil, said tip shroud having a plurality of circumferential cooling channels disposed substantially parallel to the rotation of said airfoil wherein each circumferential cooling channel is in communication with a respective cooling passage;
- and at least one exit port in communication with at least one of said circumferential cooling channels.
Dependencies are inferred from the claim text.