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1. WO2014173578 - SEQUENTIAL COMBUSTION WITH DILUTION GAS

Publication Number WO/2014/173578
Publication Date 30.10.2014
International Application No. PCT/EP2014/054355
International Filing Date 06.03.2014
IPC
F23R 3/34 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
28characterised by the fuel supply
34Feeding into different combustion zones
F23R 3/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
02characterised by the air-flow or gas-flow configuration
04Air inlet arrangements
06Arrangement of apertures along the flame tube
CPC
F23R 2900/03041
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
2900Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
03041Effusion cooled combustion chamber walls or domes
F23R 2900/03341
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
2900Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
03341Sequential combustion chambers or burners
F23R 3/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
02characterised by the air-flow or gas-flow configuration
04Air inlet arrangements
06Arrangement of apertures along the flame tube
F23R 3/346
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
28characterised by the fuel supply
34Feeding into different combustion zones
346for staged combustion
Applicants
  • ALSTOM TECHNOLOGY LTD [CH]/[CH]
Inventors
  • GAO, Xianfeng
  • TAY WO CHONG HILARES, Luis
Priority Data
PCT/EP2013/05865025.04.2013EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SEQUENTIAL COMBUSTION WITH DILUTION GAS
(FR) COMBUSTION SÉQUENTIELLE AVEC GAZ DE DILUTION
Abstract
(EN)
The invention refers to a sequential combustor arrangement (104) comprising a first burner (112), a first combustion chamber (101), a mixer (117) for admixing a dilution gas to the hot gases leaving the first combustion chamber (101) during operation, a second burner (113), and a second combustion chamber (102) arranged sequentially in a fluid flow connection. The mixer (117) comprises at least three groups of injection tubes (114, 115, 116) pointing inwards from the side walls (119) of the mixer (117) for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber (101). The first injection tubes (114) of the first group have a first protrusion depth (l1), the second injection tubes (115) of the second group have a protrusion depth (l2), and the third injection tubes (116) of the third group have a third protrusion depth (l3). The disclosure further refers to a gas turbine (100) and a method for operating a gas turbine (100) with such a sequential combustor arrangement (104).
(FR)
L'invention concerne un agencement de chambres de combustion séquentiel (104) comportant un premier brûleur (112), une première chambre de combustion (101), un mélangeur (117) permettant d'incorporer un gaz de dilution dans les gaz chauds sortant de la première chambre de combustion (101) lors du fonctionnement, un second brûleur (113) et une seconde chambre de combustion (102) agencés de manière séquentielle en un raccordement d'écoulement de fluide. Le mélangeur (117) comporte au moins trois groupes de tuyaux d'injection (114, 115, 116) pointant vers l'intérieur depuis les parois latérales (119) du mélangeur (117) à des fins d'incorporation du gaz de dilution pour refroidir les gaz de carneau chauds sortant de la première chambre de combustion (101). Les premiers tuyaux d'injection (114) du premier groupe ont une première profondeur de protubérance (l1), les deuxièmes tuyaux d'injection (115) du deuxième groupe ont une profondeur de protubérance (l2) et les troisièmes tuyaux d'injection (116) du troisième groupe ont une troisième profondeur de protubérance (l3). L'invention concerne en outre une turbine à gaz (100) et un procédé permettant de faire fonctionner une turbine à gaz (100) avec un tel agencement de chambres de combustion séquentiel (104).
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