초록 ▼

A diffusion flame nozzle gas tip is provided to convert a dual fuel nozzle to a gas only nozzle. The nozzle tip diverts compressor discharge air from the passage feeding the diffusion nozzle air swirl vanes to a region vacated by removal of the dual fuel components, so that the diverted compressor d

A diffusion flame nozzle gas tip is provided to convert a dual fuel nozzle to a gas only nozzle. The nozzle tip diverts compressor discharge air from the passage feeding the diffusion nozzle air swirl vanes to a region vacated by removal of the dual fuel components, so that the diverted compressor discharge air can flow to and through effusion holes in the end cap plate of the nozzle tip. In a preferred embodiment, the nozzle gas tip defines a cavity for receiving the compressor discharge air from a peripheral passage of the nozzle for flow through the effusion openings defined in the end cap plate.

대표청구항 ▼

1. A gas only nozzle comprising:an outer peripheral wall; an air flow passage defined within said outer wall and extending at least part circumferentially thereof; a central gas fuel flow passage; and a nozzle tip fixed with respect to said outer peripheral wall at a distal end thereof for substanti

1. A gas only nozzle comprising:an outer peripheral wall; an air flow passage defined within said outer wall and extending at least part circumferentially thereof; a central gas fuel flow passage; and a nozzle tip fixed with respect to said outer peripheral wall at a distal end thereof for substantially blocking said central gas flow passage, said nozzle tip including an end cap plate; said nozzle tip defining at least one cooling air passage ending in multiple holes substantially clustered around the center of said plate for diverting a portion of the air flowing through said air flow passage to cool the nozzle end cap plate thereof and said nozzle tip defining at least one gas fuel passage radially outside of said holes for directing gas fuel flowing through said central gas flow passage to and through gas injection holes defined about a periphery of said nozzle end cap plate.