公开(公告)号：US20180216471A1

公开(公告)日：2018-08-02

申请号：US15420329

申请日：2017-01-31

Applicant: General Electric Company

Inventor： Nicholas William Rathay ,  Satoshi Atsuchi ,  David Weber ,  Gustavo Ledezma ,  Gary Itzel

IPC: F01D5/18 ,  F01D5/14

Abstract: A cooling assembly includes a cooling chamber disposed inside of a turbine assembly. The cooling chamber directs cooling air inside an airfoil of the turbine assembly. The cooling assembly includes a metered channel fluidly coupled with the cooling chamber. The metered channel directs at least some of the cooling air out of the cooling chamber outside of a rail surface of the airfoil. The metered channel is elongated along and encompasses an axis. The metered channel has an interior surface with a distance between opposing first portions of the interior surface. The distance between the opposing first portions decreases at increasing distances along the axis from the cooling chamber toward the rail surface.