SYSTEM FOR THERMALLY SHIELDING A PORTION OF A GAS TURBINE SHROUD ASSEMBLY

摘要

In one aspect the present subject matter is directed to a system for thermally shielding a portion of a shroud assembly for a gas turbine. The system includes a shroud support having a forward wall that includes a front side that is axially spaced from a back side and a radially inner surface that extends axially between the front and back sides. A shroud is mounted to the shroud support. The shroud includes a leading edge portion that extends towards the forward wall of the shroud support and a trailing edge portion that extends towards the aft wall of the shroud support. A radial gap is defined between a top surface of the leading edge portion and the radially inner surface of the forward wall. A thermal shield is disposed along a bottom portion of the forward wall and is oriented to face towards a flow of combustion gases.

主权项

1. A system for thermally shielding a portion of a gas turbine shroud assembly, comprising:
a shroud seal support having a forward wall axially spaced from an aft wall, the forward wall having a front side axially spaced from a back side and a radially inner surface that extends axially between the front and back sides; a shroud seal mounted to the shroud seal support, the shroud seal having a leading edge portion that extends towards the forward wall of the shroud seal support and a trailing edge portion that extends towards the aft wall of the shroud seal support, wherein a radial gap is defined between a top surface of the leading edge portion and the radially inner surface of the forward wall; and a thermal shield disposed along a bottom portion of the forward wall, wherein the thermal shield is oriented to face towards a flow of combustion gases.