Nozzle, and gas turbine combustor having the nozzle

摘要

A pilot nozzle, a gas turbine combustor and a gas turbine are provided with a nozzle main body having a fuel passage, a cover ring arranged at an outside of a front end-outer peripheral portion of the nozzle main body at a predetermined interval to form an inner air passage and capable of injecting air toward a front side of the nozzle main body, a plurality of nozzle tips that includes a fuel injection nozzle attached to a front end portion of the cover ring at a predetermined interval in a circumferential direction to communicate with the fuel passage and is able to inject fuel toward an outside of injection air from the inner air passage, and a swirling force application unit that applies a swirling force to air injected through the inner air passage.

主权项

1. A nozzle, comprising:
a nozzle main body having a fuel passage; a cover ring arranged at an outside of a front end-outer peripheral portion of the nozzle main body at a predetermined interval to form an inner air passage, for injecting air toward a front side of the nozzle main body; fuel injection nozzles, each disposed within a nozzle tip, each nozzle tip having an outer surface attached to an inner surface of a front end portion of the cover ring at a predetermined interval in a circumferential direction to communicate with the fuel passage; and a swirling force application unit provided at an outlet of the inner air passage so as to apply a circumferential swirling force to air injected through the inner air passage.