Pre-mixing injector with bladeless swirler
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United States of America Patent
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Feb 3, 2015
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N/A
app pub date -
Nov 20, 2012
filing date -
Nov 20, 2012
priority date (Note) -
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Abstract
A gas turbine combustor includes a combustion cylinder, a premixing tube, and a pressure injection unit. Holes are formed in a peripheral wall of the premixing tube in a tangential direction. An inner wall is provided in the peripheral wall while having a gap therefrom. The compressed air in the gap forms a swirl flow. The compressed air and injected fuel supplied into the inner wall form straight flows each with a predetermined cross-section area in the inner wall under no influence of the swirl flow. They are combusted in the combustion cylinder via a protruding wall. The flame is stably retained at an appropriate position apart from the top portion of the combustion cylinder to improve durability without being excessively heated. This may prevent deterioration in durability of the combustion cylinder by the heat by retaining the flame at the appropriate position in the combustion cylinder.
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