Gas turbine

Abstract

An outer shape of a section in the longitudinal direction at a leading edge of the strut is an aerofoil whose thickness is gradually increased along a flow direction of the combustion gas to prevent reduction of turbine efficiency caused by a shock wave generated at the strut of the exhaust diffuser.

What is claimed is:  
     
         1 . A gas turbine comprising moving blades attached to a rotor and an exhaust diffuser which takes up combustion gas at an exit of the moving blades to recover pressure, wherein the exhaust diffuser comprises a strut which supports the rotor provided in the exhaust diffuser, 
 wherein an outer shape of a section in the longitudinal direction at a leading edge of the strut is an aerofoil whose thickness is gradually increased along a flow direction of the combustion gas.    
     
     
         2 . A gas turbine according to  claim 1 , wherein an outer shape of a section in the longitudinal direction at a trailing edge of the strut is a semicircular shape.