Systems and methods for providing one or more cooling holes in a slash face of a turbine bucket

Abstract

A turbine bucket is disclosed herein. The turbine bucket may include a platform and a shank portion extending radially inward from the platform. The shank portion may include a slash face, a radial seal pin groove formed in the slash face, and at least one cooling hole disposed in the slash face about the radial seal pin groove.

That which is claimed: 
     
         1 . A turbine bucket, comprising:
 a platform; and   a shank portion extending radially inward from the platform, wherein the shank portion comprises:
 a slash face; 
 a radial seal pin groove formed in the slash face; and 
 at least one cooling hole disposed in the slash face about the radial seal pin groove. 
   
     
     
         2 . The turbine bucket of  claim 1 , further comprising a radial seal pin positionable within the radial seal pin groove. 
     
     
         3 . The turbine bucket of  claim 1 , wherein the at least one cooling hole is configured to provide a flow of cooling fluid about the radial seal pin groove. 
     
     
         4 . The turbine bucket of  claim 1 , further comprising a forward trench cavity formed about a leading edge of the shank portion, wherein the at least one cooling hole is disposed in the slash face about the forward trench cavity. 
     
     
         5 . The turbine bucket of  claim 1 , wherein the at least one cooling hole is positioned about at least one of: a radial outer portion of the radial seal pin groove; an upstream portion of the radial seal pin groove; a downstream portion of the radial seal pin groove; or a combination thereof. 
     
     
         6 . The turbine bucket of  claim 1 , wherein the at least one cooling hole comprises a plurality of cooling holes. 
     
     
         7 . The turbine bucket of  claim 1 , wherein the slash face comprises at least one of a pressure side slash face or a suction side slash face. 
     
     
         8 . The turbine bucket of  claim 1 , wherein the at least one cooling hole is in communication with a cooling circuit. 
     
     
         9 . A gas turbine engine system, comprising:
 a compressor;   a combustor in communication with the compressor; and   a turbine in communication with the combustor, wherein the turbine comprises one or more turbine buckets, comprising:
 a platform; and 
 a shank portion extending radially inward from the platform, wherein the shank portion comprises:
 a slash face; 
 a radial seal pin groove formed in the slash face; and 
 at least one cooling hole disposed in the slash face about the radial seal pin groove. 
 
   
     
     
         10 . The system of  claim 9 , further comprising a radial seal pin positionable within the radial seal pin groove. 
     
     
         11 . The system of  claim 9 , wherein the at least one cooling hole is configured to provide a flow of cooling fluid about the radial seal pin groove. 
     
     
         12 . The system of  claim 9 , further comprising a forward trench cavity formed about a leading edge of the shank portion, wherein the at least one cooling hole is disposed in the slash face about the forward trench cavity. 
     
     
         13 . The system of  claim 9 , wherein the at least one cooling hole is positioned about at least one of: a radial outer portion of the radial seal pin groove; an upstream portion of the radial seal pin groove; a downstream portion of the radial seal pin groove; or a combination thereof. 
     
     
         14 . The system of  claim 9 , wherein the at least one cooling hole comprises a plurality of cooling holes. 
     
     
         15 . The system of  claim 9 , wherein the slash face comprises at least one of a pressure side slash face or a suction side slash face. 
     
     
         16 . The system of  claim 9 , wherein the at least one cooling hole is in communication with a cooling circuit. 
     
     
         17 . A shank portion of a turbine bucket, the shank portion comprising:
 a slash face;   a radial seal pin groove formed in the slash face; and   at least one cooling hole disposed in the slash face about the radial seal pin groove.   
     
     
         18 . The shank portion of  claim 17 , further comprising a radial seal pin positionable within the radial seal pin groove. 
     
     
         19 . The shank portion of  claim 17 , wherein the at least one cooling hole is configured to provide a flow of cooling fluid about the radial seal pin groove. 
     
     
         20 . The shank portion of  claim 17 , further comprising a forward trench cavity formed about a leading edge of the shank portion, wherein the at least one cooling hole is disposed in the slash face about the forward trench cavity.