Method and apparatus for robotically inspecting gas turbine combustor components

摘要

Apparatus for inspecting in situ a wear pad gap in a gas turbine engine combustor, wherein the wear pad gap is defined between a wear pad of a transition piece impingement sleeve and a forward ring of a flow duct of the combustor. The apparatus includes an elongate guide, a mount for coupling the guide to the combustor such that the guide at least partially extends within a space between the impingement sleeve and a body of the transition piece and such that a portion of the guide extends adjacent the wear pad. A cam follower is coupled to the guide for movement along the guide and an inspection head (48) is carried by the cam follower. An actuator is coupled to the cam follower for displacing the cam follower along the guide.