Patent ID: 7331754
Filing Date: 2008-02-19
Classification: F01D,F05D

Abstract:
1. A nozzle box assembly comprising: a torus having a plurality of steam inlets and an annular steam outlet; a steam path ring having an annular steam inlet, said annular steam inlet having an inner diameter (ID) and an outer diameter (OD), said steam path ring disposed downstream of said torus; and, a bridge ring having an annular steam inlet and an annular steam outlet, said annular steam outlet having an ID and an OD, said bridge ring disposed between said torus and said steam path ring, said bridge ring annular steam outlet is adjacent to said steam path ring annular steam inlet, wherein said steam path ring annular steam inlet OD is greater than said bridge ring annular steam outlet OD and said steam path ring annular steam inlet ID is smaller than said bridge ring annular steam outlet ID.