METHOD AND SYSTEM FOR PROVIDING COOLING FOR TURBINE COMPONENTS

摘要

A system for providing cooling for a turbine component that includes an outer surface exposed to combustion gases is provided. A component base includes at least one fluid supply passage coupleable to a source of cooling fluid. At least one feed passage communicates with the at least one fluid supply passage. At least one delivery channel communicates with the at least one feed passage. At least one cover layer covers the at least one feed passage and the at least one delivery channel, defining at least in part the component outer surface. At least one discharge passage extends to the outer surface. A diffuser section is defined in at least one of the at least one delivery channel and the at least one discharge passage, such that a fluid channeled through the system is diffused prior to discharge adjacent the outer surface.

主权项

1. A method for providing a cooling system for a turbine component that includes an outer surface that is exposed to combustion gases during turbine operation, said method comprising:
defining a component base with at least one fluid supply passage coupleable to a source of cooling fluid; defining at least one feed passage in the component base, wherein the at least one feed passage is coupled in flow communication with the at least one fluid supply passage; defining at least one delivery channel in the component base, wherein the at least one delivery channel is coupled in flow communication with the at least one feed passage; defining at least one cover layer on the base to cover the at least one feed passage and the at least one delivery channel, and to define at least in part the component outer surface; defining at least one discharge passage through the at least one cover layer, wherein the at least one discharge passage is coupled in flow communication with the at least one delivery channel and extends to the outer surface; and defining a diffuser section in at least one of the at least one delivery channel and the at least one discharge passage, such that a fluid channeled through the at least one delivery channel and the at least one discharge passage is diffused prior to discharge adjacent the outer surface.