Gas turbine steam-cooled combustor with alternately counter-flowing steam passages

• US 6,463,742 B2
• Filed: 04/05/2001
• Issued: 10/15/2002
• Est. Priority Date: 04/07/2000
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Suenaga, Kiyoshi, Tanaka, Katsunori, Mandai, Shigemi
• Primary Examiner(s): Gartenberg, Ehud
• Application Number:
  US09/825,881
• Publication Number:
  US 20010027653A1
• Time in Patent Office: 558 Days
• Field of Search: 608/06
• US Class Current: 60/806
• CPC Class Codes: F23D 2214/00 Cooling
• CPC Class Codes: F23L 7/005 Evaporated water; Steam
• CPC Class Codes: F23R 3/06 Arrangement of apertures along the flame tube
• CPC Class Codes: F23R 3/10 for primary air F23R3/06, F23R3/045 take precedence
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft

Abstract

A steam-cooled combustor for a gas turbine has cooling steam passages, the steam flowing in opposite axial directions in adjacent channels.

Claims

1. A cooling system for a combustor of a gas turbine which generates combustion gas by burning fuel for driving a turbine comprising:

a cylindrical combustion tube having an inlet end and an outlet end and forming a combustion chamber therein for burning fuel supplied from the inlet end thereof and supplying combustion gas to a turbine from the outlet end thereof;

a plurality of cooling steam passages formed in the wall of the combustion tube and extending along the length of the combustion tube between the inlet end and the outlet end, said cooling steam passages including first cooling steam passages in which cooling steam flows in a first direction and second cooling steam passages in which cooling steam flows in a second direction opposite to the first direction.

2. A cooling system for a gas turbine combustor as set forth in claim 1, wherein the first cooling steam passage and the second cooling steam passages are disposed alternately in a circumferential direction of the combustion tube.