Transitional multihole combustion liner
AssigneeGeneral Electric Company
InventorsCraig P. Burns, Beverly S. Duncan, James E. Thompson, Glenn E. Wiehe
Life of this patent
Estimating the term…
Abstract
A combustor liner includes a wall having an outboard surface and an opposite inboard surface. A plurality of first holes are inclined through the wall in a multihole pattern to channel cooling fluid therethrough to form a cooling film layer along the inboard surface. A second hole extends perpendicularly through the wall within the multihole pattern to form a shadow along the inboard surface devoid of the first holes. A transition hole extends through the wall in the shadow at a greater inclination than the first holes for cooling the wall at the shadow.
Claims20
A combustor liner comprising:
- a wall having an outboard surface over which is flowable a cooling fluid, and a opposite inboard surface for facing combustion gases;
- a plurality of first holes inclined through said wall at an acute inclination angle from said surfaces thereof in a multihole pattern to channel said cooling fluid therethrough to form a cooling film layer of said cooling fluid along said inboard surface;
- a second hole extending perpendicularly through said wall within said multihole pattern to form a shadow along said inboard surface devoid of said first holes in which said film layer is locally interrupted;
- and
- a transition hole extending through said wall in said shadow at a greater inclination than said first holes for cooling said wall at said shadow, and having an outlet at said inboard surface spaced no closer to said second hole than an inlet thereof at said outboard surface.
A combustor liner comprising:
- a wall having an outboard surface over which is flowable a cooling fluid, and a opposite inboard surface for facing combustion gases flowable in a downstream direction therealong;
- a plurality of first holes inclined through said wall at an acute downstream inclination angle from said surfaces thereof in a multihole pattern to channel said cooling fluid therethrough to form a cooling film layer of said cooling fluid along said inboard surface;
- a second hole extending perpendicularly through said wall within said multihole pattern to form a shadow along said inboard surface devoid of said first holes in which said film layer is locally interrupted;
- and
- a plurality of rows of transition holes inclined downstream through said wall in said shadow, and having inlets on said outboard surface spaced closer to said second hole than corresponding outlets thereof on said inboard surface.
Dependencies are inferred from the claim text.