Combustor nozzle and method for modifying the combustor nozzle

摘要

A combustor nozzle includes a downstream surface having an axial centerline. A plurality of passages through the downstream surface provide fluid communication through the downstream surface, and a downstream section of each passage has at least one of a frusto-conical or frusto-spherical shape. A method for modifying a combustor nozzle includes machining a downstream side of a body to remove a recast surface in a plurality of passages that provide fluid communication through the body. The method may further include machining a downstream section in each passage to form at least one of a frusto-conical or frusto-spherical surface in each passage proximate to the downstream side of the body.

主权项

1. A combustor nozzle, comprising:
a shroud; a center body at least partially disposed within the shroud such that a passage is defined between the center body and the shroud; and a nozzle tip disposed at a downstream end of the center body, the nozzle tip comprising:
a downstream surface having an axial centerline;a plurality of passages extending through the downstream surface, wherein the plurality of passages provide fluid communication through the downstream surface, each passage comprising an upstream section and a downstream section that define the passage; anda recast surface in the upstream section of each passage, wherein the recast surface is a melted and re-formed portion of the upstream section, the upstream section and recast surface formed from the same material,wherein the downstream section of each passage is free from recast surfaces, and wherein each downstream section has at least one of a frusto-conical or frusto-spherical shape.