Turbine shroud segment cooling system and method

摘要

The present embodiments are generally directed toward systems and methods for cooling one or more shroud segments of a gas turbine engine. For example, in a first embodiment, a shroud segment is provided that is configured to at least partially surround a turbine blade of a turbine engine. The shroud segment includes a body and a microchannel disposed in the body. The microchannel is configured to flow a cooling fluid through the body.

主权项

1. A system, comprising:
a shroud segment configured to at least partially surround a turbine blade of a turbine engine, wherein the shroud segment comprises:
a body having a first surface configured to face toward the turbine blade and generally opposed second surfaces each configured to face toward a respective adjacent shroud segment, wherein a respective edge of the body is formed by an intersection of the first surface and each of the second surfaces;a respective seal slot formed in each of the second surfaces of the body;a first microchannel disposed in the first surface and having first and second longitudinal portions each extending along a longitudinal direction of the body between a leading edge and a trailing edge of the body proximate to the respective edge of the body and positioned between the respective seal slot and the first surface, wherein the first microchannel includes a crosswise portion proximate to the leading edge of the body and fluidly connecting the first and second longitudinal portions, and wherein the first microchannel is defined by a layer disposed over a microchannel recess formed in the first surface, and the microchannel recess extends along the first surface such that the first microchannel is configured to flow the cooling fluid along the first surface to cool the respective seal slots; anda second microchannel disposed in the first surface and having first and second longitudinal portions each extending along the longitudinal direction of the body between the leading edge and the trailing edge of the body proximate to the first microchannel, wherein the second microchannel includes a crosswise portion proximate to the crosswise portion of the first microchannel and fluidly connecting the first and second longitudinal portions of the second microchannel.