Cooled pilot fuel lance
AssigneeSiemens Aktiengesellschaft
InventorUlf Nilsson
Life of this patent
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Abstract
A device for injecting fuel into a combustion chamber of a gas turbine is provided, having a distribution section to which a first fuel channel, a second fuel channel and an injection channel are coupled. The first fuel channel and the second fuel channel are arranged such that a) fuel is transportable by one of the first fuel channel and the second fuel channel to the distribution section, and b) a first quantity of fuel is transportable by the other one of the first fuel channel and the second fuel channel out of the distribution section. The injection channel is arranged such that a second quantity of fuel is injectable from the distribution section into the combustion chamber. The device further comprises an end cap with a protrusion having the injection channel inside, and extending inside the inner tube.
Claims12
A device for injecting fuel into a combustion chamber of a turbine, comprising
- a distribution section,
- a first fuel channel which is coupled to the distribution section,
- a second fuel channel which is coupled to the distribution section,
- an injection channel which is coupled to the distribution section,
- wherein:
- a) one of the first fuel channel and the second fuel channel is configured to transport fuel to the distribution section, and
- b) an other one of the first fuel channel and the second fuel channel is configured to transport a first quantity of fuel out of the distribution section, and
- c) the injection channel is configured to inject a second quantity of fuel from the distribution section into the combustion chamber,
- an inner tube comprising an inner surface that forms the second fuel channel,
- an outer tube which surrounds the inner tube,
- wherein the inner tube and the outer tube are arranged coaxial with respect to each other, wherein a space is formed between an inner surface of the outer tube and an outer surface of the inner tube for forming the first fuel channel, and
- an end cap mounted to an open end of the outer tube, wherein the end cap comprises a protrusion that extends inside the inner tube, wherein the inner surface of the inner tube and an outer surface of the protrusion are set apart from each other and define part of the first fuel channel, and wherein the injection channel is formed through the protrusion.
Dependencies are inferred from the claim text.