Turbine vane with cooled fillet

摘要

The disclosure pertains to a vane (10) comprising a platform (18) and airfoil (11) extending form said platform (18) and connected to the platform (18) by a fillet (16). An impingement tube (22) is inserted into said airfoil (11) delimiting a cooling channel (26) between the impingement tube (22) and the side walls (14a, 15a). The vane (10) further comprises a baffle structure (20) positioned adjacent the fillet (16) and which follows the inside contour of the fillet (16); delimiting a first cooling passage (23) between the fillet (16) and the baffle structure (20). A first obstruction (25) is arranged on the inside of the airfoil (11) at the connection of the fillet (16) to the side walls (14a, 15a) for separating the first cooling passage (23) from the cooling channel (26) in the airfoil and to guide the cooling gas from the first cooling passage into the impingement tube (22). The disclosure further refers to a method for cooling such a vane (10).