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1. EP1650503 - Method for cooling a heat shield element and a heat shield element

Office
European Patent Office
Application Number 04025338
Application Date 25.10.2004
Publication Number 1650503
Publication Date 26.04.2006
Publication Kind A1
IPC
F23R 3/00
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
CPC
F02K 1/82
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
78Other construction of jet pipes
82Jet pipe walls, e.g. liners
F23M 2900/05005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
2900Special features of, or arrangements for combustion chambers
05005Sealing means between wall tiles or panels
F23R 3/002
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
002Wall structures
F23R 3/005
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
005Combined with pressure or heat exchangers
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 2900/03044
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
03044Impingement cooled combustion chamber walls or subassemblies
Applicants SIEMENS AG
Inventors DAHLKE STEFAN
GRUSCHKA UWE
HEILOS ANDREAS
LIEBE ROLAND DR
Designated States
Priority Data 04025338 25.10.2004 EP
Title
(DE) Verfahren zur Kühlung eines Hitzeschildelements und Hitzeschildelement
(EN) Method for cooling a heat shield element and a heat shield element
(FR) Méthode de refroidissement d'un bouclier thermique et bouclier thermique
Abstract
(EN) The invention relates to a method for cooling a heat shield element (13), comprising a wall (15) with an inner side (151) and an outer side (153), which can be exposed to a hot fluid, and wherein a coolant (K) is introduced into an impingement region (17) of that heat shield element (13) and an impingement flow (19) of said coolant (K) is directed on a surface area (23) of that inner side (151) through a plurality of impingement holes (21), effecting an impingement pressure drop (”P I ). In the method discharge flow (25) is metered through a number of discharge holes (27) through said wall (15) from the inner side (151) to the outer side (153) of the wall (15), effecting a discharge pressure drop (”P D ) in series with the impingement pressure drop (”P I ). The impingement pressure drop (”P I ) and the discharge pressure drop (”P D ) are matched to one another so that a required coolant flow (K) is generated which yields a predetermined heat-transfer coefficient of the wall (±).
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