Patent ID: 8628297
Filing Date: 2014-01-14
Classification: F01D,F02C

Abstract:
1. An apparatus, comprising: a turbine including a casing and a rotatable turbine bucket having a tip proximate to the casing and a trailing edge defined relative to a direction of fluid flow through the turbine; and a diffuser, defined between a central surface and a downstream section of the casing, which is fluidly coupled to the turbine and disposed downstream from a plane aligned with the trailing edge, a slope of the downstream section of the casing being angled by at least 6 degrees relative to a slope of the tip within about 0.5 turbine bucket chord lengths as measured at the tip from the trailing edge, and an end portion of the central surface being substantially straight along and parallel with an axial dimension and the central surface and the downstream section of the casing being at least substantially parallel or divergent from the trailing edge.