US 12,247,499 B2
Transition piece, combustor, gas turbine, and gas turbine equipment
Taiki Kinoshita, Yokohama (JP); Sosuke Nakamura, Yokohama (JP); Kotaro Miyauchi, Yokohama (JP); Kenji Sato, Yokohama (JP); Kenta Taniguchi, Yokohama (JP); Satoshi Mizukami, Yokohama (JP); Yoshinori Wakita, Tokyo (JP); and Shinji Akamatsu, Yokohama (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/612,400
Filed by Mitsubishi Power, Ltd., Kanagawa (JP)
PCT Filed Mar. 5, 2020, PCT No. PCT/JP2020/009303
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/240970, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-097550 (JP), filed on May 24, 2019.
Prior Publication US 2022/0228530 A1, Jul. 21, 2022
Int. Cl. F01D 9/02 (2006.01); F02C 7/18 (2006.01)
CPC F01D 9/023 (2013.01) [F02C 7/185 (2013.01); F05D 2260/963 (2013.01); F23R 2900/00014 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A transition piece comprising:
a pipe which has a tubular shape around an axis for combustion of fuel on an inner peripheral side of the pipe;
an acoustic damper including a first part of a panel defining the pipe, and an acoustic cover defining an acoustic space on an outer peripheral side of the pipe together with the first part of the panel; and
a cooling air jacket defining a cooling air space together with a second part of the panel other than the first part of the panel, the cooling air space being isolated from an outer space on the outer peripheral side of the pipe, the cooling air jacket being configured to be supplied with air having a higher pressure and a lower temperature than air in the outer space,
wherein the pipe includes:
an inlet opening defined at a first end on an upstream side in an axial direction in which the axis extends;
an outlet opening defined at a second end on a downstream side in the axial direction;
an outer peripheral surface facing the outer peripheral side of the pipe;
an inner peripheral surface facing the inner peripheral side of the pipe;
a first air flow path defined between the outer peripheral surface and the inner peripheral surface;
a second air flow path defined between the outer peripheral surface and the inner peripheral surface; and
an acoustic hole penetrating through the pipe from the acoustic space to a combustion space on the inner peripheral side of the pipe,
wherein:
the cooling air jacket is on the downstream side of the acoustic cover;
the first air flow path includes a first inlet facing the cooling air space and being configured to guide the air in the cooling air space into the first air flow path, and a first outlet facing the acoustic space and being configured to guide the air, which has passed through the first air flow path, into the acoustic space;
the second air flow path includes a second inlet facing the outer space and being configured to guide the air in the outer space into the second air flow path, and a second outlet facing the acoustic space and being configured to guide the air, which has passed through the second air flow path, into the acoustic space;
the second inlet is on the upstream side of the acoustic cover; and
the first outlet is spaced apart from the second outlet.