Outer and inner cowl-wire wrap to one piece cowl conversion
AssigneeGeneral Electric Company
InventorGilbert Farmer
Life of this patent
Estimating the term…
Abstract
A method facilitates replacing a portion of a gas turbine engine combustor. The combustor includes a combustor liner and a wire-wrapped cowl assembly that includes an inner cowl and an outer cowl. The method comprises cutting through the wire-wrapped cowl assembly upstream from fastener openings used to couple the inner and outer cowls to the combustor liner, removing a portion of the cowl assembly from the combustor, and coupling a replacement cowl to the portion of the existing cowl assembly that is downstream from the cut, wherein the replacement cowl includes an inner annular portion, an outer annular portion, and a plurality of circumferentially-spaced radial ligaments extending therebetween.
Claims19
A method for replacing a portion of a gas turbine engine combustor, the combustor including a combustor liner and a wire-wrapped cowl assembly that includes an inner cowl and an outer cowl, said method comprising:
- cutting through the wire-wrapped cowl assembly upstream from fastener openings used to couple the inner and outer cowls to the combustor liner;
- removing a portion of the cowl assembly from the combustor;
- and
- coupling a replacement cowl to the portion of the existing cowl assembly that is downstream from the cut, wherein the replacement cowl includes an inner annular portion, an outer annular portion, and a plurality of circumferentially-spaced radial ligaments extending therebetween.
A method for replacing a portion of a gas turbine engine combustor, the combustor including a combustor liner and a wire-wrapped cowl assembly that includes an inner cowl and an outer cowl, said method comprising:
- uncoupling the cowl assembly from the combustor liner;
- cutting between an outer surface and an inner surface of the outer cowl, wherein the cut is formed upstream from a plurality of fastener openings formed within the outer cowl for coupling the outer cowl to the combustor liner;
- cutting between an outer surface and an inner surface of the inner cowl wherein the cut is formed upstream from a plurality of fastener openings formed within the inner cowl for coupling the outer cowl to the combustor liner;
- removing the portion of the cowl assembly that is upstream from the cuts formed;
- coupling a replacement cowl to the portion of the existing cowl assembly that is downstream from the cuts formed, wherein the replacement cowl includes an inner annular portion, an outer annular portion, and a plurality of circumferentially-spaced radial ligaments extending therebetween;
- and
- coupling the repaired cowl assembly to the combustor.
A method for replacing a portion of a deteriorated cowl assembly within a gas turbine engine combustor, the deteriorated cowl assembly including an inner surface, an outer surface, and a wire-wrapped portion, said method comprising:
- cutting substantially radially through the deteriorated cowl assembly between the outer and inner surfaces of the deteriorated cowl assembly;
- removing the wire-wrapped portion of the deteriorated cowl assembly that is upstream from the cut extended through the cowl assembly;
- and
- coupling a replacement cowl onto the combustor to replace the portion of the deteriorated cowl assembly removed from the combustor, wherein the replacement cowl includes an inner annular portion and an outer annular portion that is substantially concentric with respect to the annular inner portion.
Dependencies are inferred from the claim text.