Cooled gas turbine stator assembly

Abstract

A stator assembly for a gas turbine engine is provided having an annular body, an inner gas path platform, a plurality of fairings, and at least one nozzle. The annular body has an outer gas path platform and a circumferentially extending annular cavity disposed radially outside of the outer gas path platform. The fairings extend radially between the inner gas path platform and the outer gas path platform. Each fairing includes a gas passage extending from the annular cavity through the inner gas path platform. The at least one nozzle has an inlet orifice disposed outside of the annular cavity and an exit orifice disposed within the annular cavity. The exit orifice is oriented within the annular cavity such that cooling air exiting the nozzle travels in a substantially circumferential direction within the annular cavity.

1 . A stator assembly for a gas turbine engine, comprising:
 an annular body having an outer gas path platform and a circumferentially extending annular cavity disposed radially outside of the outer gas path platform;   an inner gas path platform;   a plurality of fairings extending radially between the inner gas path platform and the outer gas path platform, each fairing including a gas passage extending from the annular cavity through the inner gas path platform; and   at least one nozzle having an inlet orifice disposed outside of the annular cavity and an exit orifice disposed within the annular cavity, wherein the exit orifice is oriented within the annular cavity such that gas exiting the nozzle travels in a substantially circumferential direction within the annular cavity.   
     
     
         2 . The stator assembly of  claim 1 , further comprising a metering plate disposed within at least one of the plurality of gas passages. 
     
     
         3 . The stator assembly of  claim 2 , where metering plate is disposes at an inner end of at least one of the plurality of gas passages. 
     
     
         4 . The stator assembly of  claim 1 , further comprising a metering plate disposed within each of the plurality of gas passages. 
     
     
         5 . The stator assembly of  claim 4 , wherein each metering plate has at least one orifice operable to meter the flow of cooling air through the gas passage in which the metering plate is disposed. 
     
     
         6 . The stator assembly of  claim 1 , wherein the annular body has a plurality of circumferentially defined sections. 
     
     
         7 . The stator assembly of  claim 6 , wherein the plurality of circumferentially defined sections include the outer gas path platform and an outer body panel 
     
     
         8 . The stator assembly of  claim 6 , further comprising a seal configured between at least two of the sections. 
     
     
         9 . The stator assembly of  claim 6 , further comprising at least one nozzle disposed in each section of the annular body. 
     
     
         10 . The stator assembly of  claim 1 , further comprising a plurality of nozzles uniformly disposed around the annular body. 
     
     
         11 . The stator assembly of  claim 1 , further comprising at least one of a tie rod and a service line disposed within at least one of the fairings. 
     
     
         12 . The stator assembly of  claim 1 , wherein the circumferentially extending annular cavity has a uniform height.