公开(公告)号：JP2000002422A

公开(公告)日：2000-01-07

申请号：JP16890998

申请日：1998-06-16

Applicant: NAT AEROSPACE LAB ,  OSAKA GAS CO LTD

Inventor： SUZUKI KAZUO ,  SHIMODAIRA KAZUO ,  MORIYA KOJI ,  WAKABAYASHI TSUTOMU ,  SAKO TAKAHIRO ,  NAKAMURA YUJI

IPC: F02C9/26 ,  F23D14/02 ,  F23R3/28 ,  F23R3/32

Abstract: PROBLEM TO BE SOLVED: To provide a burner apparatus excellent in flame insulation capability and performing stable combustion even when the amount of injection of fuel gas is reduced. SOLUTION: There are provided first nozzle means 10 for specifying a first flow passage 45, second nozzle means 12 for specifying a second flow passage 47, an injection nozzle body 20 having an injection hole 48 for injecting fuel gas, and an air flow passage 8 for supplying air to the first and second flow passages 45, 47. When the amount of supply of fuel gas is little, an injection speed thereof is reduced, and the fuel gas flows into the first flow passage 5 by receiving action of the air stream flowing through the first flow passage 45, while, when the amount of supply of the fuel gas is much, an injection speed thereof is increased, whereby the fuel gas surmounts the air stream flowing through the first flow passage 45 and flows through the second flow passage 47.

公开(公告)号：JPH0842851A

公开(公告)日：1996-02-16

申请号：JP19615694

申请日：1994-07-29

Applicant: NAT AEROSPACE LAB

Inventor： HAYASHI SHIGERU ,  YAMADA SHUJI ,  SHIMODAIRA KAZUO

IPC: F23R3/06 ,  F23R3/12 ,  F23R3/26 ,  F23R3/30 ,  F23R3/34

Abstract: PURPOSE:To provide a dilute premixing combustion gas turbine combustor in which a flow rate change in premixing air can be increased, a fuel/air ratio in a combustion region can satisfactorily be diluted for a wide load variation range, and an exhaust level of NOx can be limited to a very low value irrespective of the load. CONSTITUTION:There is provided a flow passage through which premixing air 14 and dilution air 15 flow, and there is disposed a flow rate distribution mechanism of the premixing air and the dilution air in the flow passage. For the flow rate distribution, it is so constituted that when one is maximum, the other is minimum, and that they are made continuously variable from the maximum to the minimum, and further that a fuel/air ratio of the premixing air is controlled by adjusting the flow rate distribution matching with the flow rate change in the premixing fuel. For the flow rate distribution it is done by an air distributor which is operated with a driver 20, and the location of a valve of the ditributor is adjusted matching with the flow rate change in the premixing fuel.

公开(公告)号：JPH10141662A

公开(公告)日：1998-05-29

申请号：JP30751296

申请日：1996-11-05

Applicant: NAT AEROSPACE LAB

Inventor： TAMARU TAKU ,  SHIMODAIRA KAZUO

IPC: F23R3/42 ,  F02K1/82 ,  F23R3/04

Abstract: PROBLEM TO BE SOLVED: To improve combustion efficiency and reduce emission of unburnt substances by providing a heat insulating material wall where a wall surface enclosing a combustion chamber is formed with a non-metal heat insulating material on an outer cylinder of the combustor, and providing an air passage in the heat insulating material wall, and further allowing desired air to pass through and be distributed into the combustion chamber from the air passage. SOLUTION: Heat insulating material walls 2, 2' are provided at a portion corresponding to an annular passage between outer cylinders 1, 1' of a gas turbine combustor 10, and a wall surface of the combustion chamber 3 is constructed inside therof. A fuel nozzle 5 and an air whirling unit 6 or a burner 7 are disposed at the center of a combustion chamber head part wall 4. Thereupon, the heat insulating material walls 2, 2' are mounted so as to have small gap passages 8, 8' between the outer cylinders 1, 1' whereby the outer cylinders 1, 1' and the heat insulating material walls 2, 2' are prevented from being raised in temperature. Further, there are provided air passages 11, 11' for feeding air into the combustion chamber 3 which are communicated with an air inflow inlet 12'. Hereby, high temperature of the combustion chamber 3 wall surface is endured, and the outer wall on the side of the outer cylinders 1, 1' is prevented from being overheated.

公开(公告)号：JPH0755147A

公开(公告)日：1995-03-03

申请号：JP21492193

申请日：1993-08-06

Applicant: NAT AEROSPACE LAB ,  KAWASAKI HEAVY IND LTD

Inventor： SAITO TAKASHI ,  SHIMODAIRA KAZUO ,  TAMARU TAKU ,  KITAHARA KAZUOKI ,  KITAJIMA JUNICHI ,  KINOSHITA YASUHIRO

IPC: F02K7/16 ,  F23R3/16 ,  F23R3/20

Abstract: PURPOSE:To provide a burner for improving durability by improving mixing properties of the air with fuel, executing excellent flame stabilizing performance and effectively preventing thermal damage of a component. CONSTITUTION:A plurality of air injection cylinders 4(4A-4X) are disposed on an outer periphery of a substantially cylindrical combustion body 1, and fuel passages 5 are formed in the respective cylinders 4 to cool the cylinders 4 with fuel F flowing through the passages 5.