Patent ID: 8418474
Filing Date: 2013-04-16
Classification: F01D,F05D

Abstract:
1. A transition duct comprising: a first panel assembly; a generally rectangular aft frame fixed to an exit end of the first panel assembly; an inner and outer bulkhead assembly comprising: a spring plate capable of being received between attachment portions of the second outer bulkhead, the spring plate having a flat portion extending from a top edge to a bottom edge and merging into parallel curved portions that are perpendicular to the flat portion and immediately adjacent to the attachment portions of the second outer bulkhead; an aft mounting bracket for mounting the transition duct to a portion of a turbine frame, the aft mounting bracket coupled to at least the spring plate; wherein the aft frame, the inner and outer bulkhead assemblies, the spring plate, and the aft mounting bracket are secured in a manner so as to allow for thermal expansion of the aft frame in at least a circumferential direction while permitting a natural frequency of the transition duct to be altered.