Title:
GAS TURBINE COMBUSTOR
Document Type and Number:
Japanese Patent JP2021046951
Kind Code:
A
Abstract:
To provide a gas turbine combustor capable of damping pressure fluctuation due to combustion vibration and suppressing an increase in NOx emissions due to reduction of combustion air.SOLUTION: A gas turbine combustor includes: a combustor liner 12; an air hole plate having a plurality of air holes 21 concentrically arranged in multiple rows; a plurality of fuel nozzles 22 arranged coaxially with the air holes; a spring seal 26 disposed between an outer peripheral surface of a plate lip covering the outer periphery of the air hole plate and an inner peripheral surface 12a of the combustor liner; a slot 27 disposed on the inner peripheral surface of the combustor liner at the downstream position of the spring seal so as to have an approximately L-shaped cross sectional shape and extend in the peripheral direction of the combustor liner and forming an acoustic space 92; an annular band-shaped partition plate 28 disposed in the acoustic space and on an axial side wall part of the slot; and a plurality of pressure wave introduction holes 90 provided in the slot and connecting a combustion chamber with the acoustic space. The slot is disposed to cover the air holes in the outermost peripheral row of the air hole plate.SELECTED DRAWING: Figure 1
Inventors:
AKIYAMA YASUHIRO
ASAI TOMOHIRO
YOSHIDA SHOHEI
HIRATA YOSHITAKA
ASAI TOMOHIRO
YOSHIDA SHOHEI
HIRATA YOSHITAKA
Application Number:
JP2019168181A
Publication Date:
March 25, 2021
Filing Date:
September 17, 2019
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS LTD
International Classes:
F23R3/18; F01D25/04; F02C7/24
Attorney, Agent or Firm:
Polaire Patent Business Corporation