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1. EP1805459 - METHOD OF OPTIMUM CONTROLLED OUTLET, IMPINGEMENT COOLING AND SEALING OF A HEAT SHIELD AND A HEAT SHIELD ELEMENT

Office
European Patent Office
Application Number 05801298
Application Date 21.10.2005
Publication Number 1805459
Publication Date 11.07.2007
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
F05D 2260/201
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2260Function
20Heat transfer, e.g. cooling
201by impingement of a fluid
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
Applicants SIEMENS AG
Inventors LIEBE ROLAND
DAHLKE STEFAN
GRUSCHKA UWE
HEILOS ANDREAS
Designated States
Title
(DE) VERFAHREN OPTIMAL KONTROLLIERTER ABGABE, PRALLKÜHLUNG UND VERSIEGELUNG EINES HITZESCHILDES UND HITZESCHILDELEMENT
(EN) METHOD OF OPTIMUM CONTROLLED OUTLET, IMPINGEMENT COOLING AND SEALING OF A HEAT SHIELD AND A HEAT SHIELD ELEMENT
(FR) MÉTHODE DE REFROIDISSEMENT D'UN BOUCLIER THERMIQUE ET BOUCLIER THERMIQUE
Abstract
(DE) 2004P14535WO 21 Abstract Method of optimum controlled outlet, impingement cooling and sealing of a heat shield and a Heat Shield Element 5 The invention relates to a method for cooling and sealing of a heat shield element (13), comprising a main wall (15) with an inner side (151) , which is restricted by side walls (14) or rims, and an outer side (153), which can be exposed to a 10 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 (PI). In the method discharge flow (25) is 15 metered through a number of discharge holes (27) through said side wall (14) or rims from the inner side (151) to the outer side (153) of the main wall (15), generating a discharge pressure drop (PD) in series with the impingement pressure 20 drop (PI). The impingement pressure drop (PI) and the discharge pressure drop (PD) are matched to one another so that a required coolant flow (K) is generated which yields a required predetermined heat-transfer coefficient of the main wall (). Discharging coolant (K) into the gaps between side 25 opposing walls 14 of neighbouring heat shield elements (13) only allows for an effective sealing against hot gas pingestion. Furthermore, the invention relates to a heat shield element (13, 131), preferably to a single chamber or double chamber metallic heat shield element (13, 131), which 30 can be exposed to hot gases. In particular the heat shield element (13) is suitable for being used in a combustion chamber (5) of a gas turbine installation (1). Fig 2 35
(EN) The invention relates to a method for cooling and sealing of a heat shield element (13) , comprising a main wall (15) with an inner side (151) , which is restricted by side walls (14) or rims, 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 (Delta PI) . In the method discharge flow (25) is metered through a number of discharge holes (27) through said side wall (14) or rims from the inner side (151) to the outer side (153) of the main wall (15) , generating a discharge pressure drop (Delta PD) in series with the impingement pressure drop (Delta PI) .
(FR) L'invention concerne un procédé de refroidissement et de scellage d'un élément d'écran thermique (13) comprenant une paroi principale (15) pourvue d'un côté intérieur (151), restreint par des parois latérales (14) ou des bords, et un côté extérieur (153), qui peut être exposé à un fluide chaud. Un fluide de refroidissement (K) est introduit dans une zone d'impact (17) de l'élément d'écran thermique (13), et un flux d'impact (19) de ce fluide (K) est dirigé sur une zone de surface (23) de ce côté intérieur (151) à travers une pluralité de trous d'impact (21), ce qui produit une baisse de pression d'impact (Delta PI). Selon ce procédé, un flux d'évacuation (25) est mesuré à travers plusieurs trous d'évacuation (27) formés dans ladite paroi latérale (14) ou dans les bords du côté intérieur (151) au côté extérieur (153) de la paroi principale (15), ce qui produit une baisse de pression d'évacuation (Delta PD) successive à la baisse de pression d'impact (Delta PI).
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