Patent ID: 9611755
Date: 2017-04-04
CPC Classifications: F01D,F05D

Claim:
1. An air cooled turbine stator vane comprising: an airfoil with a leading edge region and a trailing edge region and a pressure side wall and a suction side wall; the airfoil being a hollow airfoil forming a cavity; a first seal slot formed on an inside section of the hollow airfoil; an impingement cooling insert located within the cavity; a second seal slot formed on the impingement cooling insert and facing the first seal slot; a plurality of chordwise movement bumpers formed on the inside section of the airfoil and on the impingement cooling insert to limit a chordwise movement of the impingement cooling insert relative to the cavity; a plurality of sideways movement bumpers formed on the inner wall of the airfoil and on the impingement cooling insert to limit a sideways movement of the impingement cooling insert relative to the cavity; a flexible seal secured within the first and second seal slots of the cavity and the impingement cooling insert; and, a chordwise gap formed between the chordwise movement bumpers and a sideways gap formed between the sideways movement bumpers such that the flexible seal can a seal between the inside section of the hollow airfoil and the impingement cooling insert due to relative movement from thermal gradients.