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Publication Title | UllltEd States Patent [19] Ishibashietal. GASTURBINECOMBUSTORANDMETHOD 0F RUNNING THE SAME

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UllltEd States Patent [19] Ishibashietal.

[54] GASTURBINECOMBUSTORANDMETHOD 0F RUNNING THE SAME

[75] Inventors YoiiIshibashi;HiroshiInoue; Takashi Ohmori, all of Hitachi;

"ramhi Hashimoto, Ushiku; Fumio Kato,Ibaraki;ShigeyukiAkatsu, Hitachi;AkiraArai,Tsukuba;Michio Kuroda; Katsukuni l-lisano, both of Hitachi,alofJapan

[73] Assignee: Hitachi,Ltd.,Tokyo,Japan [21] Appl.No.: 582,395

[22] Filed: Sep.12,1990

Related US. Application Data [62] DivisionofSer.No.387,983,Aug.1,1989.

[30] ForeignApplicationPriorityData

Aug. 8, 1988 [JP] Japan .. 63-195987

[51] Int.Cl.5..F02C3/28;F23R3/34 [52] US.Cl...60/39.06;60/733; 60/738;60/747;60/749 [58] FieldofSearch..60/39.06,722,732,

[1] PatentNumber: 5,054,280 [45] DateofPatent: Oct.8,1991

4,344,230 3/1932 Minikawa etal. ..60/747 4,701,124 10/1937 Magwon etal. ..60/747

[56]

60/733,734,737,738,749,746,39.03,747 ReferencesCited

U.S.PATENT DOCUMENTS

3,937,008 2/1976 Markowskietal...60/733

Primary Examiner-Louis J. Casaregola AssistantExaminer-John A. Savio, III

Attorney, Agent, or Firm-Antonelli, Terry, Stout & Kraus

[57] ABSTRACT

A gasturbinecombustorincludinga?rst-stagecombus tion chamber being arranged to serve as a premix cham ber for a second-stage combustion chamber and an aux iliary burner provided in the ?rst-stage combustion chamber and arranged to effect, when ?red, combustion and holding of a flame in the ?rst-stage combustion chamber and to effect, when extinguished, feed a ?ame from the ?rst-stage combustion chamber to the second stage combustion chamber; and a method of driving the gas turbine combustor including a step of preparing the auxiliary burner in the ?rst stage combustion chamber, the auxiliary burner being sparked when said combus

tion is ?red, and causing the ?rst-stage combustion camber to serve as the premixing chamber for the se cond-stage combustion chamber by extinguished the auxiliaryburner.

6 Claims, 8 Drawing Sheets

4,735,052 4,910,957 4,949,533 4,993,222

4/1933 MaedaCtal........ ......60/733 3/1990 Morenoetal...60/737 3/1990 I3Sill06:al. ..60/733 2/1991 Iwaietal. ..60/39.06

Image | UllltEd States Patent [19] Ishibashietal. GASTURBINECOMBUSTORANDMETHOD 0F RUNNING THE SAME



ulllted-states-patent-[19]-ishibashietal--gasturbinecombustorandmethod-0f-running-same
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