EP2871419A1 - Gas turbine combustion chamber with tile for insertion of a spark plug - Google Patents

Gas turbine combustion chamber with tile for insertion of a spark plug Download PDF

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Publication number
EP2871419A1
EP2871419A1 EP20140191950 EP14191950A EP2871419A1 EP 2871419 A1 EP2871419 A1 EP 2871419A1 EP 20140191950 EP20140191950 EP 20140191950 EP 14191950 A EP14191950 A EP 14191950A EP 2871419 A1 EP2871419 A1 EP 2871419A1
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EP
European Patent Office
Prior art keywords
combustion chamber
shingle
spark plug
chamber wall
projection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140191950
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German (de)
French (fr)
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EP2871419B1 (en
Inventor
Dr.-Ing. Miklós Gerendás
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Rolls Royce Deutschland Ltd and Co KG
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Rolls Royce Deutschland Ltd and Co KG
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Publication of EP2871419A1 publication Critical patent/EP2871419A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/03041—Effusion cooled combustion chamber walls or domes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/03044—Impingement cooled combustion chamber walls or subassemblies

Definitions

  • the invention relates to a gas turbine combustor and, more particularly, to a gas turbine combustor shingle configured to pass a spark plug.
  • the combustion chambers of gas turbines in particular of aircraft gas turbines, usually have a combustion chamber wall, which forms a support structure for shingles.
  • the shingles are disposed on the inside of the combustion chamber wall to shield them from the hot gas and to thermally insulate the support structure.
  • a gap is formed between the shingles and the support structure through which cooling air is passed.
  • Such cradled combustors are for example from the EP 0 576 435 A1 , of the EP 0 741 268 A1 or the EP 1 710 501 A2 known.
  • the support and sealing structure of the combustion chamber wall is protected from the intense heat radiation of the flame.
  • the support and sealing structure remains at a lower temperature and retains its mechanical strength.
  • the invention has for its object to provide a gas turbine combustor with a shingle for performing a spark plug and a gas turbine combustor shingles, which avoid the disadvantages of the prior art with a simple structure and simple, cost-effective manufacturability and enable a safe and simple arrangement of a spark plug.
  • the invention thus provides to provide the shingle with a recess for performing a spark plug.
  • a tubular, collar-like approach to the shingle is formed, which surrounds the recess for the implementation of the spark plug and extending from the combustion chamber interior side facing away from the shingle.
  • the tubular extension is thus according to the invention dimensioned so that it extends from the shingle through the combustion chamber wall (support structure) on the cold side of the combustion chamber wall.
  • the tubular extension is in particular designed and dimensioned such that it is guided with a tight fit through the recess formed in the combustion chamber wall or support structure.
  • the shingle itself is formed in a suitable manner to form the recess for the implementation of the spark plug so that the spark plug can be operated safely and easily and kept.
  • the inventively provided shingles as mentioned, formed integrally with the tubular extension.
  • the shingle can be manufactured as a casting or produced by means of a laser deposition welding process (DLD).
  • DLD laser deposition welding process
  • the tubular extension is provided with a spark plug seal at its free end region, which projects beyond the combustion chamber wall via the cold side of the combustion chamber wall.
  • the seal can in particular be designed so that it does not touch the combustion chamber wall (support structure), in order to create no heat transfer in this area.
  • tubular projection or collar is provided with an annular bearing surface or a step to apply the annular projection against the hot side of the combustion chamber wall (support structure). This results, on the one hand, in a sealing of the cooling air gap formed between the combustion chamber wall and the shingel. On the other hand, this provides additional support and storage of the shingle.
  • the tubular extension is provided with at least one cooling air, through which cooling air can be supplied to the inner wall of the tubular extension and thus to the spark plug in order to cool them.
  • the solution according to the invention thus has the advantage that a safe installation and arrangement of the spark plug without a spark plug tower is possible. Since the shingle is made of a more wear-resistant material than the combustion chamber wall, a reliable storage and positioning of the spark plug is ensured. Furthermore, according to the invention, in order to further reduce component tolerances, the spark plug hole (recess of the tubular extension) can be introduced particularly precisely by positioning relative to the support of the combustion chamber in a later production step. In order to facilitate the assembly, the above-mentioned spark plug seal can be additionally attached to the holder of the spark plug.
  • the Fig. 1 shows in a schematic sectional view of a gas turbine combustor 1, as it is known from the prior art.
  • the combustion chamber 1 has a heat shield 2 and a combustion chamber head 3 and a burner seal 4.
  • On a cool air-side combustion chamber wall 6 a plurality of shingles 7 are attached at a distance from the combustion chamber wall 6.
  • combustion chamber wall 6 and the shingles 7 on Zumischlöcher 5 for supplying air.
  • the Fig. 2 shows a first embodiment of an inventive embodiment of a combustion chamber shingles 7. This has, as known from the prior art, effusion cooling holes 9 and is cooled by means of cooling air, which is supplied by impingement cooling holes 8 of the combustion chamber wall 6.
  • the shingle 7 is provided with a tubular extension 15 which extends in the direction of the combustion chamber wall 6 and is performed by a recess 23 of the combustion chamber wall 6.
  • the tubular extension 15 is formed integrally with the shingle 7, for example by means of a casting process.
  • the tubular projection 15 has a connecting web 10, which forms an annular contact surface 20, against which the combustion chamber wall 6 abuts.
  • the annular projection 15 is provided with a central recess 18, which forms a through hole for a spark plug.
  • the Fig. 2 further shows a spark plug seal 16, which, since the tubular projection 15 extends through the combustion chamber wall 6, has a distance from the combustion chamber wall 6.
  • the tubular extension 15 is further provided with a plurality of cooling air recesses 17 through which cooling air can be introduced into the recess 18 to cool the spark plug.
  • the Fig. 3 shows a further embodiment in an analogous representation, the same parts are provided with the same reference numerals. On a repeated description can therefore be omitted.
  • the shingle 7 is integrally formed with a portion of the combustion chamber wall 6 and made by a DLD method.
  • the region of the combustion chamber wall 6 formed on the shingle 7 is connected to the remaining combustion chamber wall by suitable means.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Die Erfindung bezieht sich auf eine Gasturbinenbrennkammer mit einer Brennkammerwand 6, an welcher Schindeln 7 angeordnet sind, sowie mit einer sich durch die Brennkammerwand 6 und eine Schindel 7 erstreckenden Ausnehmung 18 zur Durchführung einer Zündkerze, wobei die Schindel 7 mit einem die Ausnehmung 18 umgebenden, sich von der einem Brennkammerinnenraum 19 abgewandten Seite der Schindel 7 aus erstreckenden rohrförmigen Ansatz 15 versehen ist.The invention relates to a gas turbine combustion chamber with a combustion chamber wall 6, on which shingles 7 are arranged, as well as with a through the combustion chamber wall 6 and a shingle 7 extending recess 18 for performing a spark plug, wherein the shingle 7 with a recess 18 surrounding, is provided from the combustion chamber interior 19 side facing away from the shingle 7 extending from tubular projection 15.

Description

Die Erfindung bezieht sich auf eine Gasturbinenbrennkammer und insbesondere auf eine Gasturbinenbrennkammerschindel, welche zur Durchführung einer Zündkerze ausgebildet ist. Die Brennkammern von Gasturbinen, insbesondere von Fluggasturbinen weisen üblicherweise eine Brennkammerwand auf, welche eine Tragstruktur für Schindeln bildet. Die Schindeln sind an der Innenseite der Brennkammerwand angeordnet, um diese gegenüber dem Heißgas abzuschirmen und die Tragstruktur thermisch zu isolieren. Üblicherweise ist zwischen den Schindeln und der Tragstruktur ein Zwischenraum ausgebildet, durch welchen Kühlluft durchgeleitet wird.The invention relates to a gas turbine combustor and, more particularly, to a gas turbine combustor shingle configured to pass a spark plug. The combustion chambers of gas turbines, in particular of aircraft gas turbines, usually have a combustion chamber wall, which forms a support structure for shingles. The shingles are disposed on the inside of the combustion chamber wall to shield them from the hot gas and to thermally insulate the support structure. Usually, a gap is formed between the shingles and the support structure through which cooling air is passed.

Derartige beschindelte Brennkammern sind beispielsweise aus der EP 0 576 435 A1 , der EP 0 741 268 A1 oder der EP 1 710 501 A2 bekannt. Durch die Verwendung der beschriebenen Schindeln, welche mittels Prallkühlung gekühlt werden und mit Effusionskühllöchern versehen sind, wird die Trag- und Dichtstruktur der Brennkammerwand vor der intensiven Wärmestrahlung der Flamme geschützt. Die Trag- und Dichtstruktur bleibt dadurch auf einer niedrigeren Temperatur und behält ihre mechanische Festigkeit.Such cradled combustors are for example from the EP 0 576 435 A1 , of the EP 0 741 268 A1 or the EP 1 710 501 A2 known. By using the shingles described, which are cooled by impingement cooling and are provided with Effusionskühllöchern, the support and sealing structure of the combustion chamber wall is protected from the intense heat radiation of the flame. The support and sealing structure remains at a lower temperature and retains its mechanical strength.

Zur Zündung von Brennkammern ist es erforderlich, zumindest eine Zündkerze durch die Brennkammerwand bzw. Tragstruktur sowie durch die Schindel durchzuführen, um den Brennraum der Brennkammer zu erreichen. Da die Zündkerze an einer Stelle im Gehäuse der Gasturbine befestigt ist, während die Brennkammer an einer anderen Stelle des Gehäuses gelagert ist, entstehen Relativbewegungen. Weiterhin ist es erforderlich, Bauteiltoleranzen durch die Beweglichkeit der Zündkerze in der Brennkammer auszugleichen, ohne dass eine Last auf die Zündkerze übertragen wird. Zusätzlich erhitzt sich die Brennkammer im Betrieb schneller und auf höhere Temperaturen, wodurch unterschiedliche Wärmeausdehnungen ausgeglichen werden müssen. Im Bereich der Zündkerzenbohrung erfolgt der Ausgleich von Bauteiltoleranzen und Wärmedehnungen durch eine Vergrößerung der Zündkerzenbohrung in der Brennkammer, sodass die Zündkerzenbohrung einen größeren Durchmesser aufweist, als die Zündkerze. Hierdurch entsteht ein Spalt, welcher durch eine Dichtung verschlossen werden muss.For ignition of combustion chambers, it is necessary to perform at least one spark plug through the combustion chamber wall or support structure and through the shinghai to reach the combustion chamber of the combustion chamber. Since the spark plug is fixed at one point in the housing of the gas turbine, while the combustion chamber is mounted at a different location of the housing, relative movements arise. Furthermore, it is necessary to compensate for component tolerances due to the mobility of the spark plug in the combustion chamber without a load being transmitted to the spark plug. In addition, the combustion chamber heats faster during operation and higher temperatures, which must be compensated for different thermal expansion. In the area of the spark plug bore, component tolerances and thermal expansions are compensated by enlarging the spark plug bore in the combustion chamber so that the spark plug bore has a larger diameter than the spark plug. This creates a gap, which must be closed by a seal.

Aus der US 7 093 441 B2 ist eine beschindelte Brennkammer vorbekannt, welche einen sogenannten Zündkerzenturm aufweist, durch welchen die Zündkerze abgedichtet geführt werden kann. Ein derartiger zusätzlicher Zündkerzenturm bringt zusätzliches Gewicht. Weiterhin sind zusätzliche Kosten für dessen Herstellung zu kalkulieren. Zusätzlich erzwingt der Zündkerzenturm einen Mindestabstand zwischen der Brennkammerwand und dem Gehäuse der Gasturbine. Hierdurch ergibt sich insbesondere bei kleineren Triebwerken ein größerer notwendiger Durchmesser des Druckgehäuses, wodurch die Kosten und das Gewicht erheblich erhöht werden.From the US Pat. No. 7,093,441 B2 is a previously beschinfelte combustion chamber, which has a so-called spark plug tower through which the spark plug can be performed sealed. Such an additional spark plug tower brings additional weight. Furthermore, additional costs for its production are to be calculated. In addition, the spark plug tower enforces a minimum distance between the combustion chamber wall and the housing of the gas turbine. This results in particular for smaller engines, a larger necessary diameter of the pressure housing, whereby the cost and weight are significantly increased.

Der Erfindung liegt die Aufgabe zugrunde, eine Gasturbinenbrennkammer mit einer Schindel zur Durchführung einer Zündkerze sowie eine Gasturbinenbrennkammerschindel zu schaffen, welche bei einfachem Aufbau und einfacher, kostengünstiger Herstellbarkeit die Nachteile des Standes der Technik vermeiden und eine sichere und einfache Anordnung einer Zündkerze ermöglichen.The invention has for its object to provide a gas turbine combustor with a shingle for performing a spark plug and a gas turbine combustor shingles, which avoid the disadvantages of the prior art with a simple structure and simple, cost-effective manufacturability and enable a safe and simple arrangement of a spark plug.

Erfindungsgemäß wird die Aufgabe durch die Merkmalskombinationen der unabhängigen Ansprüche gelöst. Die Unteransprüche zeigen weitere vorteilhafte Ausgestaltungen der Erfindung.According to the invention the object is achieved by the feature combinations of the independent claims. The subclaims show further advantageous embodiments of the invention.

Die Erfindung sieht somit vor, die Schindel mit einer Ausnehmung zur Durchführung einer Zündkerze zu versehen. Dabei ist ein rohrförmiger, kragenartiger Ansatz an der Schindel ausgebildet, welcher die Ausnehmung zur Durchführung der Zündkerze umschließt und sich von der dem Brennkammerinnenraum abgewandten Seite der Schindel aus erstreckt. Der rohrförmige Ansatz ist somit erfindungsgemäß so dimensioniert, dass er sich von der Schindel aus durch die Brennkammerwand (Tragstruktur) hindurch auf die Kaltseite der Brennkammerwand erstreckt. Der rohrförmige Ansatz ist dabei insbesondere so ausgebildet und dimensioniert, dass er mit einer engen Passung durch die in der Brennkammerwand oder Tragstruktur ausgebildete Ausnehmung geführt ist.The invention thus provides to provide the shingle with a recess for performing a spark plug. In this case, a tubular, collar-like approach to the shingle is formed, which surrounds the recess for the implementation of the spark plug and extending from the combustion chamber interior side facing away from the shingle. The tubular extension is thus according to the invention dimensioned so that it extends from the shingle through the combustion chamber wall (support structure) on the cold side of the combustion chamber wall. The tubular extension is in particular designed and dimensioned such that it is guided with a tight fit through the recess formed in the combustion chamber wall or support structure.

Erfindungsgemäß ist somit kein separates Bauteil erforderlich, vielmehr wird die Schindel selbst in geeigneter Weise ausgebildet, um die Ausnehmung zur Durchführung der Zündkerze so auszubilden, dass die Zündkerze betriebssicher und einfach durchgeführt und gehalten werden kann.According to the invention, therefore, no separate component is required, but the shingle itself is formed in a suitable manner to form the recess for the implementation of the spark plug so that the spark plug can be operated safely and easily and kept.

Die erfindungsgemäß vorgesehene Schindel ist, wie erwähnt, einstückig mit dem rohrförmigen Ansatz ausgebildet. Dabei kann die Schindel als Gussteil gefertigt werden oder mittels eines Laserauftragsschweißverfahrens (DLD) hergestellt werden.The inventively provided shingles, as mentioned, formed integrally with the tubular extension. The shingle can be manufactured as a casting or produced by means of a laser deposition welding process (DLD).

In besonders günstiger Weiterbildung der Erfindung ist vorgesehen, dass der rohrförmige Ansatz an seinem freien Endbereich, welcher durch die Brennkammerwand über die Kaltseite der Brennkammerwand hinausragt, mit einer Zündkerzendichtung versehen ist. Die Dichtung kann dabei insbesondere so ausgebildet werden, dass sie die Brennkammerwand (Tragstruktur) nicht berührt, um in diesem Bereich keinen Wärmeübergang zu schaffen.In a particularly favorable development of the invention, it is provided that the tubular extension is provided with a spark plug seal at its free end region, which projects beyond the combustion chamber wall via the cold side of the combustion chamber wall. The seal can in particular be designed so that it does not touch the combustion chamber wall (support structure), in order to create no heat transfer in this area.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, dass der rohrförmige Ansatz oder Kragen mit einer ringförmigen Anlagefläche oder einer Stufe versehen ist, um den ringförmigen Ansatz gegen die Heißseite der Brennkammerwand (Tragstruktur) anzulegen. Hierdurch ergibt sich zum einen eine Abdichtung des zwischen der Brennkammerwand und der Schindel ausgebildeten Kühlluft-Zwischenraums. Zum anderen erfolgt hierdurch eine zusätzliche Abstützung und Lagerung der Schindel.In a further advantageous embodiment of the invention it is provided that the tubular projection or collar is provided with an annular bearing surface or a step to apply the annular projection against the hot side of the combustion chamber wall (support structure). This results, on the one hand, in a sealing of the cooling air gap formed between the combustion chamber wall and the shingel. On the other hand, this provides additional support and storage of the shingle.

In einer besonders vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass der rohrförmige Ansatz mit zumindest einer Kühlluftausnehmung versehen ist, durch welche Kühlluft zur innenliegenden Wandung des rohrförmigen Ansatzes und somit zur Zündkerze zugeführt werden kann, um diese zu kühlen.In a particularly advantageous embodiment of the invention it is provided that the tubular extension is provided with at least one cooling air, through which cooling air can be supplied to the inner wall of the tubular extension and thus to the spark plug in order to cool them.

Die erfindungsgemäße Lösung weist somit den Vorteil auf, dass eine sichere Montage und Anordnung der Zündkerze ohne einen Zündkerzenturm möglich ist. Da die Schindel aus einem verschleißfesteren Material als die Brennkammerwand besteht, ist eine betriebssichere Lagerung und Positionierung der Zündkerze gewährleistet. Weiterhin kann erfindungsgemäß zur weiteren Verminderung von Bauteiltoleranzen das Zündkerzenloch (Ausnehmung des rohrförmigen Ansatzes) durch Positionierung relativ zur Halterung der Brennkammer in einem späteren Fertigungsschritt besonders präzise eingebracht werden. Um den Zusammenbau zu erleichtern, kann die oben erwähnte Zündkerzendichtung zusätzlich am Halter der Zündkerze befestigt werden.The solution according to the invention thus has the advantage that a safe installation and arrangement of the spark plug without a spark plug tower is possible. Since the shingle is made of a more wear-resistant material than the combustion chamber wall, a reliable storage and positioning of the spark plug is ensured. Furthermore, according to the invention, in order to further reduce component tolerances, the spark plug hole (recess of the tubular extension) can be introduced particularly precisely by positioning relative to the support of the combustion chamber in a later production step. In order to facilitate the assembly, the above-mentioned spark plug seal can be additionally attached to the holder of the spark plug.

Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:

Fig. 1
eine vereinfachte Schnittansicht einer Brennkammer gemäß dem Stand der Technik,
Fig. 2
eine Detail-Schnittansicht einer erfindungsgemäßen Brennkammerschindel mit rohrförmigem Ansatz, und
Fig. 3
ein weiteres Ausführungsbeispiel in analoger Darstellung der Fig. 2.
In the following the invention will be described by means of embodiments in conjunction with the drawing. Showing:
Fig. 1
a simplified sectional view of a combustion chamber according to the prior art,
Fig. 2
a detail sectional view of a combustor shingle according to the invention with tubular approach, and
Fig. 3
a further embodiment in an analogous representation of Fig. 2 ,

Die Fig. 1 zeigt in schematischer Schnittansicht eine Gasturbinenbrennkammer 1, so wie diese aus dem Stand der Technik bekannt ist. Die Brennkammer 1 weist ein Hitzeschild 2 sowie einen Brennkammerkopf 3 und eine Brennerdichtung 4 auf. An einer kühlluftseitigen Brennkammerwand 6 sind mit einem Abstand zur Brennkammerwand 6 mehrere Schindeln 7 befestigt.The Fig. 1 shows in a schematic sectional view of a gas turbine combustor 1, as it is known from the prior art. The combustion chamber 1 has a heat shield 2 and a combustion chamber head 3 and a burner seal 4. On a cool air-side combustion chamber wall 6 a plurality of shingles 7 are attached at a distance from the combustion chamber wall 6.

Weiterhin weisen die Brennkammerwand 6 und die Schindeln 7 Zumischlöcher 5 zur Zuführung von Luft auf. Die Befestigung der Schindeln 7 erfolgt über Bolzen 13 und Muttern 14, während die Brennkammerwand 6 mittels einer Brennkammeraufhängung 11 und einem Brennkammerflansch 12 gehaltert ist.Furthermore, the combustion chamber wall 6 and the shingles 7 on Zumischlöcher 5 for supplying air. The attachment of the shingles 7 via bolts 13 and nuts 14, while the combustion chamber wall 6 is supported by means of a combustion chamber suspension 11 and a combustion chamber 12.

Auf die Darstellung einer Zündkerze wurde der Übersichtlichkeit halber in Fig. 1 verzichtet. Hierzu wird auf die US 7 093 441 B2 verwiesen.On the representation of a spark plug was the sake of clarity in Fig. 1 waived. This is on the US Pat. No. 7,093,441 B2 directed.

Die Fig. 2 zeigt ein erstes Ausführungsbeispiel einer erfindungsgemäßen Ausgestaltung einer Brennkammerschindel 7. Diese weist, wie aus dem Stand der Technik bekannt, Effusionskühllöcher 9 auf und wird mittels Kühlluft, welche durch Prallkühllöcher 8 der Brennkammerwand 6 zugeführt wird, gekühlt.The Fig. 2 shows a first embodiment of an inventive embodiment of a combustion chamber shingles 7. This has, as known from the prior art, effusion cooling holes 9 and is cooled by means of cooling air, which is supplied by impingement cooling holes 8 of the combustion chamber wall 6.

Erfindungsgemäß ist die Schindel 7 mit einem rohrförmigen Ansatz 15 versehen, welcher sich in Richtung der Brennkammerwand 6 erstreckt und durch eine Ausnehmung 23 der Brennkammerwand 6 durchgeführt ist. Der rohrförmige Ansatz 15 ist einstückig mit der Schindel 7 ausgebildet, beispielsweise mittels eines Gussverfahrens.According to the shingle 7 is provided with a tubular extension 15 which extends in the direction of the combustion chamber wall 6 and is performed by a recess 23 of the combustion chamber wall 6. The tubular extension 15 is formed integrally with the shingle 7, for example by means of a casting process.

Um einen vorgegebenen Abstand der Schindel 7 von der Brennkammerwand 6 sicherzustellen und um die Schindel 7 an der Brennkammerwand 6 zu positionieren, weist der rohrförmige Ansatz 15 einen Verbindungssteg 10 auf, welcher eine ringförmige Anlagefläche 20 bildet, gegen welche die Brennkammerwand 6 anliegt. Der ringförmige Ansatz 15 ist mit einer zentrischen Ausnehmung 18 versehen, welche ein Durchgangsloch für eine Zündkerze bildet.In order to ensure a predetermined distance of the shingle 7 from the combustion chamber wall 6 and to position the shingle 7 on the combustion chamber wall 6, the tubular projection 15 has a connecting web 10, which forms an annular contact surface 20, against which the combustion chamber wall 6 abuts. The annular projection 15 is provided with a central recess 18, which forms a through hole for a spark plug.

Die Fig. 2 zeigt weiterhin eine Zündkerzendichtung 16, welche, da der rohrförmige Ansatz 15 die Brennkammerwand 6 durchragt, einen Abstand zur Brennkammerwand 6 aufweist.The Fig. 2 further shows a spark plug seal 16, which, since the tubular projection 15 extends through the combustion chamber wall 6, has a distance from the combustion chamber wall 6.

Der rohrförmige Ansatz 15 ist weiterhin mit mehreren Kühlluftausnehmungen 17 versehen, durch welche Kühlluft in die Ausnehmung 18 eingeleitet werden kann, um die Zündkerze zu kühlen.The tubular extension 15 is further provided with a plurality of cooling air recesses 17 through which cooling air can be introduced into the recess 18 to cool the spark plug.

Die Fig. 3 zeigt ein weiteres Ausführungsbeispiel in analoger Darstellung, gleiche Teile sind mit gleichen Bezugsziffern versehen. Auf eine nochmalige Beschreibung kann deshalb verzichtet werden. Bei dem Ausführungsbeispiel der Fig. 3 ist die Schindel 7 einstückig mit einem Bereich der Brennkammerwand 6 ausgebildet und mittels eines DLD-Verfahrens hergestellt. Der an der Schindel 7 ausgebildete Bereich der Brennkammerwand 6 ist mit geeigneten Mitteln mit der restlichen Brennkammerwand verbunden.The Fig. 3 shows a further embodiment in an analogous representation, the same parts are provided with the same reference numerals. On a repeated description can therefore be omitted. In the embodiment of the Fig. 3 the shingle 7 is integrally formed with a portion of the combustion chamber wall 6 and made by a DLD method. The region of the combustion chamber wall 6 formed on the shingle 7 is connected to the remaining combustion chamber wall by suitable means.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Brennkammercombustion chamber
22
Hitzeschildheat shield
33
Brennkammerkopfbulkhead
44
BrennerdichtungBrenner seal
55
ZumischlochZumischloch
66
kühlluftseitige BrennkammerwandCooling-air side combustion chamber wall
77
Schindelshingle
88th
PrallkühllochImpingement cooling hole
99
EffusionskühllochEffusionskühlloch
1010
Verbindungsstegconnecting web
1111
Brennkammeraufhängungcombustion chamber suspension
1212
BrennkammerflanschBrennkammerflansch
1313
Bolzenbolt
1414
Muttermother
1515
rohrförmiger Ansatztubular approach
1616
Zündkerzendichtungspark plugs seal
1717
KühlluftausnehmungKühlluftausnehmung
1818
Ausnehmungrecess
1919
BrennkammerinnenraumCombustion chamber interior
2020
ringförmige Anlageflächeannular contact surface
2121
BrennkammermittelachseCombustor center axis
2222
Mittelachsecentral axis
2323
Ausnehmungrecess

Claims (8)

Gasturbinenbrennkammerschindel mit einer Ausnehmung (18) zur Durchführung einer Zündkerze, dadurch gekennzeichnet, dass die Schindel (7) mit einem die Ausnehmung (18) umgebenden, sich von der einem Brennkammerinnenraum (19) abgewandten Seite der Schindel (7) aus erstreckenden rohrförmigen Ansatz (15) versehen ist.Gas turbine combustor shingle with a recess (18) for carrying out a spark plug, characterized in that the shingle (7) with a the recess (18) surrounding, of the combustion chamber interior (19) facing away from the shingle (7) extending from the tubular approach ( 15) is provided. Schindel nach Anspruch 1, dadurch gekennzeichnet, dass der Ansatz (15) einstückig mit der Schindel (7) ausgebildet ist.Shingle according to claim 1, characterized in that the projection (15) is formed integrally with the shingle (7). Schindel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ansatz (15) an seinem freien Endbereich mit einer Zündkerzendichtung (16) versehen ist.Shingle according to claim 1 or 2, characterized in that the projection (15) is provided at its free end region with a spark plug seal (16). Schindel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Ansatz (15) an seinem Außenumfang mit einer ringförmigen Anlagefläche (20) versehen ist.Shingle according to one of claims 1 to 3, characterized in that the projection (15) is provided on its outer circumference with an annular contact surface (20). Schindel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ansatz (15) mit zumindest einer sich durch die Wandung des Ansatzes (15) erstreckenden Kühlluftausnehmung (17) versehen ist.Shingle according to one of claims 1 to 4, characterized in that the projection (15) with at least one through the wall of the projection (15) extending Kühlluftausnehmung (17) is provided. Schindel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schindel (7) mit dem Ansatz (15) als Gussteil ausgebildet ist.Shingle according to one of claims 1 to 5, characterized in that the shingle (7) is formed with the projection (15) as a casting. Schindel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schindel (7) mit dem Ansatz (15) mittels eines Laserauftragsschweißverfahrens hergestellt ist.Shingle according to one of claims 1 to 5, characterized in that the shingle (7) is made with the projection (15) by means of a laser deposition welding process. Gasturbinenbrennkammer mit einer Brennkammerwand (6), an welcher Schindeln (7) angeordnet sind, sowie mit einer sich durch die Brennkammerwand (6) und eine Schindel (7) erstreckenden Ausnehmung (18) zur Durchführung einer Zündkerze, dadurch gekennzeichnet, dass die Schindel (7) nach einem der Ansprüche 1 bis 7 ausgebildet ist.Gas turbine combustor having a combustion chamber wall (6) on which shingles (7) are arranged, and a recess (18) extending through the combustion chamber wall (6) and a shingle (7) for passing through a spark plug, characterized in that the shingle ( 7) is designed according to one of claims 1 to 7.
EP14191950.6A 2013-11-11 2014-11-05 Gas turbine combustion chamber with tile for insertion of a spark plug Not-in-force EP2871419B1 (en)

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DE102013222932.1A DE102013222932A1 (en) 2013-11-11 2013-11-11 Gas turbine combustion chamber with shingle for carrying out a spark plug

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EP2871419A1 true EP2871419A1 (en) 2015-05-13
EP2871419B1 EP2871419B1 (en) 2016-03-09

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