| 主权项 |
1. A heat shield for a combustor comprising:
a body having first and second side edges, an inner edge, an outer edge, a back surface and a front surface opposite the back surface, wherein an opening in the body communicates through the front and back surfaces; a plurality of effusion holes extending from the back surface to the front surface, the plurality of effusion holes providing discharge of cooling air flow from the back surface to the front surface; and a plurality of rails disposed on the back surface for orienting and directing cooling air flow, the plurality of rails including
a first side rail disposed on the first side edge,a second side rail disposed on the second side edge,a circular rail disposed about the opening,first and second mid-rails extending from opposite sides of the circular rail, the first mid-rail joining the circular rail and the first side rail, and the second mid-rail joining the circular rail and the second side rail,a radially inner rail extending along the inner edge, the radially inner rail joining the first side rail and the second side rail,a radially outer rail extending along the outer edge, the radially outer rail joining the first side rail and the second side rail, andat least one radial rail extending outwardly from the circular rail. |
