• the tuning methodology of a ge 7fa + e dln-2.6 gas turbine combustor

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 860
    • تعداد پرسش و پاسخ ها: 0
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     on the basis of a mark-vi system, the tuning methodology for operation of a dln-2.6 combustor was studied for the maintenance of a ge 7fa + e gas turbine at a seo-incheon combined cycle power plant. the dln-2.6 combustor has a high level of yellow plume (no2 flue gas) and combustion vibration during the start-up mode (pout = 20 ∼ 30 and 40 ∼ 45 mw) in comparison with the base mode (pout = 100 ∼ 160 mw). the objectives of the current study are to investigate one of the main factors for this high level of yellow plume and combustion vibration during the start-up mode and to suggest the operation strategy for the reliable working of a ge 7fa + e gas turbine. after analyzing the tuning data in a mark-vi program, we conclude that the yellow plume is caused by the relatively rich mixture (ϕ ∼ >0.5) in a pm1 nozzle at mode 3 (pout = 20 ∼ 30 mw). in addition, the characteristic frequency of the combustion vibration was predominantly in the rage fchar = 120 ∼ 140 hz, which was related to the presence of a cold flow behavior in a pm3 nozzle at mode 6b (pout = 40 ∼ 45 mw).

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