The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 1999
Filed:
Apr. 05, 1995
Yasutaka Komatsu, Hitachi, JP;
Haruo Urushidani, Hitachi, JP;
Shigeru Azuhata, Hitachi, JP;
Nobuyuki Iizuka, Hitachi, JP;
Yasuyuki Watanabe, Hitachi, JP;
Hiroyuki Arai, Hitachi, JP;
Nariyoshi Kobayashi, Hitachinaka, JP;
Masaya Ohtsuka, Hitachi, JP;
Kazuyuki Ito, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gas turbine combustor having a fuel injection nozzle for diffusion combustion disposed in a central portion of the combustor and an annular premixed nozzle disposed in an outer peripheral portion of the fuel injection nozzle for injecting a mixed gas of fuel and air. The annular premixed nozzle includes an annular premixing chamber and a plurality of premixed fuel nozzles for injecting fuel into the annular premixing chamber. The annular premix nozzle is divided by a partition (108) to form a plurality of premixing chambers each adjacent to the fuel injection nozzle for diffusion combustion. Each of the premixing chambers includes at least one of the premixed fuel nozzles. A mechanism is provided for supplying fuel to a predetermined number of the premixing chambers in a low load operation of the gas turbine and for supplying fuel to all of the premixing chambers in a high load operation.