COMBUSTOR

• Main Authors: INNAMI TAMIO, YOSHIDA SHOHEI, KURODA MICHIO, INOUE HIROSHI, SASAO TOSHIBUMI, OTAWARA YASUHIKO, TSUKAHARA SATOSHI
• Format: Patent
• Language: English
• Published: 03.08.1993
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PURPOSE:To attain lean-combustion where fuel concentration of premixture air is thinned to the utmost, and suppress generation of nitrogen oxide so as to maintain a stable lean combustion condition, since reduction in nitrogen oxide included in combustion exhaust gas in the premixture combustor of a gas turbine and the like is required keenly. CONSTITUTION:Premixture air-fuel concentration of a mixing chamber 8 is detected, and the exhaust hole 34 of a local fuel leading-in mechanism is provided on the auxiliary chamber 4 side outlet end of the mixing chamber 8. The amount of local fuel supplied from the exhaust hole 34 is adjusted moderately, and thereby, pre-mixture air fuel concentration of the outlet of the mixing chamber 8 is concentrated in a local part. It is thus possible to maintain a stable combustion condition even if secondary premixture air is in a lean side. As a result, it is possible to suppress forming of nitrogen oxide in combustion exhaust gas, and to widen a pre-mixture combustion range toward fuel concentration lean side especially.