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EP0823035B1 - Headpiece of a gas turbine ring-shaped combustion chamber - Google Patents

Headpiece of a gas turbine ring-shaped combustion chamber Download PDF

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Publication number
EP0823035B1
EP0823035B1 EP96914102A EP96914102A EP0823035B1 EP 0823035 B1 EP0823035 B1 EP 0823035B1 EP 96914102 A EP96914102 A EP 96914102A EP 96914102 A EP96914102 A EP 96914102A EP 0823035 B1 EP0823035 B1 EP 0823035B1
Authority
EP
European Patent Office
Prior art keywords
burner
front wall
heat shield
combustion chamber
flanges
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.)
Expired - Lifetime
Application number
EP96914102A
Other languages
German (de)
French (fr)
Other versions
EP0823035A1 (en
Inventor
Michael Ebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce Deutschland Ltd and Co KG
Original Assignee
BMW Rolls Royce GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BMW Rolls Royce GmbH filed Critical BMW Rolls Royce GmbH
Publication of EP0823035A1 publication Critical patent/EP0823035A1/en
Application granted granted Critical
Publication of EP0823035B1 publication Critical patent/EP0823035B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04—Air inlet arrangements
    • F23R3/10—Air inlet arrangements for primary air
    • 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
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
    • 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
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/50—Combustion chambers comprising an annular flame tube within an annular casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/70—Disassembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/80—Repairing, retrofitting or upgrading methods

Definitions

  • the invention relates to a head part of a gas turbine annular combustion chamber, in the Bulb end sleeves, each holding a burner, ring-shaped arranged and each by means of a holding part, which together with one in the Passage opening used for the burner collar and the rear wall heat shield covering the combustion chamber attached to the front wall is positioned to be radially displaceable, the ring-shaped Holding part has at least segmental flanks between which the burner collar is held with tabs arranged thereon, and wherein the holding part on a ring shoulder of the heat shield lying on the front wall is put on.
  • Reference number 1 is the outer wall and reference number 2 is the end wall referred to a conventional ring combustion chamber of a gas turbine.
  • Fig. 1 only the head part of this gas turbine annular combustion chamber is shown combustion takes place in the actual combustion chamber 3, which according to FIG. 1 is delimited on the left side by the end wall 2 instead.
  • Fuel and air are introduced into the combustion chamber 3 via a plurality of rings arranged burner, not shown here, each by a burner collar being held.
  • a burner collar 4 is shown in FIG. 1.
  • This burner collar 4 is inserted into a passage opening 5 in the end wall 2 and should be kept radially displaceable. This radially displaceable
  • the burner collar 4 is positioned with the aid of a Holding part 6, which together with one also inserted into the passage opening usual heat shield 7 is screwed to the end wall 2.
  • FIGS. 2 and 4 The annular shape of the holding part 6 results in particular from FIGS. 2 and 4.
  • this holding part 6 Flanks 8a, 8b, between which the burner collar 4 with their arranged thereon Tabs 9a is held.
  • the formation of the tabs 9a is best seen in Fig. 6.
  • the two tabs 9a project only over one segment or one sector of the annular burner collar 4 extend from a circumferential web 9b of this burner collar 4 from.
  • the burner collar 4 Due to the segmental formation or arrangement of the flanks 8a and of the tabs 9a, it is possible to insert the burner collar 4 in a bayonet-like manner to insert the holding part 6, on the circumferential flank 8b of the holding part not only the tabs 9a, but also the peripheral web 9b of the burner collar 4 concern. After a relative rotation of the two components the tabs 9a between the two flanks are then ultimately to one another 8a and 8b, with a radial displaceability of the burner collar 4 compared to the holding part 6 is guaranteed. To turn back the To prevent burner collar 4 from the bayonet lock after assembly of the burner collar 4, the two lugs 8c are bent so that in the event of a possible rotary movement, the tabs 9a bear against the lugs 8c come.
  • the holding part 6 can be screwed onto the end wall 2, specifically together with the heat shield 7, which for this purpose is provided with a plurality of stud bolts 13 is. Eyelets 11 are provided on the flanks 8a of the holding part 6. This Eyelets 11 are arranged such that the holding part 6 on the front 2b the end wall 2 on the inserted through screw holes 12 in the end wall 2 Stud 13 can be placed.
  • the assembly takes place in such a way that first the heat shield 7 is inserted from the front wall rear 2a is that the pre-assembled from the front wall front 2b Burner collar 4 is placed with the holding part 6, and that then the nuts 14 are screwed onto the stud bolts 13, whereby the in their Entire with 10 designated screw connection is formed. In the simplest way the burner collar is thus attached and positioned radially displaceable.
  • FIG. 2 shows, there are a multitude in the end wall 2 as usual provided by cooling air holes 15. About these cooling air holes 15 is the thermally highly stressed components in the combustion chamber 3 cooling air supplied. In particular, this means that the rear side of the heat shield facing the end wall 2 7 cooled. As can be seen, with the exception of the areas directly a large number behind the circumferential web 9b and the areas of the flanks 8a of cooling air holes 15 are provided in the end wall 2, so that an optimal Cooling air flow is made possible. Furthermore, an optimal cooling of the heat shield 7 also allows that between the end wall 2 and the Back of the heat shield 7 there are no parts that are exposed to cooling air of the heat shield 7 hinder.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Spray-Type Burners (AREA)

Description

Die Erfindung betrifft ein Kopfteil einer Gasturbinen-Ringbrennkammer, in dessen Stirnwand Brennermanschetten, die jeweils einen Brenner aufnehmen, ringförmig angeordnet und jeweils mittels eines Halteteiles, das zusammen mit einem in die Durchtrittsöffnung für die Brennermanschette eingesetzten und die Stirnwand-Rückseite zur Brennkammer hin abdeckenden Hitzeschild an der Stirnwand befestigt ist, radial verschiebbar positioniert sind, wobei das ringförmig ausgebildete Halteteil zumindest segmentweise Flanken aufweist zwischen denen die Brennermanschette mit daran angeordneten Laschen gehalten ist, und wobei das Halteteil auf einen auf der Stirnwand-Vorderseite liegenden Ringansatz des Hitzeschildes aufgesetzt ist.The invention relates to a head part of a gas turbine annular combustion chamber, in the Bulb end sleeves, each holding a burner, ring-shaped arranged and each by means of a holding part, which together with one in the Passage opening used for the burner collar and the rear wall heat shield covering the combustion chamber attached to the front wall is positioned to be radially displaceable, the ring-shaped Holding part has at least segmental flanks between which the burner collar is held with tabs arranged thereon, and wherein the holding part on a ring shoulder of the heat shield lying on the front wall is put on.

Zum bekannten Stand der Technik wird zunächst auf die DE 31 13 382 C2 verwiesen. Bei der aus dieser Schrift bekannten Ringbrennkammer besitzt das Hitzeschild einen sog. Ansatzring von U-förmigem Querschnitt, der in der Durchtrittsöffnung für die Brennermanschette gehalten ist. Um jedoch diesen Ansatzring des Hitzeschildes überhaupt montieren zu können, ist es erforderlich, diesen zweiteilig auszubilden und nach erfolgter Montage von den beiden Seiten der Stirnwand her die beiden Teile miteinander zu verschweißen. Alternativ wird in dieser Schrift eine Bördelverbindung vorgeschlagen. Beide Verfahrensschritte, d. h. sowohl das Schweißen als auch das Bördeln sind jedoch relativ aufwendig. With regard to the known prior art, reference is first made to DE 31 13 382 C2. In the ring combustion chamber known from this document, the heat shield has a so-called extension ring of U-shaped cross section, which in the passage opening is held for the burner collar. However, around this approach ring To be able to mount the heat shield at all, it is necessary to install it train in two parts and after assembly from both sides of the End wall to weld the two parts together. Alternatively, in this Scripture proposed a flare connection. Both process steps, i. H. however, both welding and flanging are relatively complex.

Demgegenüber einfacher montierbar, insbesondere unter Vermeidung von Schweißnähten, ist die in der GB-A-2 257 502 gezeigte Anordnung von Brennermanschetten, wonach jede Brennermanschette über daran angeordnete Laschen zwischen segmentweise vorgesehenen Flanken eines ringförmig ausgebildeten Halteteiles gehalten sind. Die endgültige Befestigung erfolgt dabei mittels eines einzusetzenden elastischen Ringes.In contrast, easier to install, especially while avoiding Welds, is the arrangement of torch sleeves shown in GB-A-2 257 502, after which each burner collar has tabs arranged thereon between flanks of a ring-shaped section provided in segments Holding part are held. The final attachment is done using a elastic ring to be used.

Unter harten Einsatzbedingungen kann eine zuverlässige Halterung über den elastischen Ring nicht immer sichergestellt sein.
Ein demgegenüber funktional zuverlässigeres Kopfteil einer Gasturbinen-Ringbrennkammer aufzuzeigen, ist daher Aufgabe der vorliegenden Erfindung. Zur Lösung dieser Aufgabe ist vorgesehen, daß die Brennermanschette über ihre Laschen bajonettverschlußartig zwischen den Flanken des Halteteiles, welches zusammen mit dem Hitzeschild an der Stirnwand verschraubt ist, gehalten ist. Vorteilhafte Aus- und Weiterbildungen sind Inhalt der Unteransprüche.Under tough operating conditions, reliable mounting over the elastic ring cannot always be guaranteed.
It is therefore the object of the present invention to show a functionally more reliable head part of a gas turbine annular combustion chamber. To solve this problem, it is provided that the burner collar is held over its tabs like a bayonet lock between the flanks of the holding part, which is screwed to the end wall together with the heat shield. Advantageous training and further education are included in the subclaims.

Näher erläutert wird die Erfindung anhand eines bevorzugten Ausführungsbeispieles.
Dabei zeigt

Fig. 1
einen Teilschnitt durch das Kopfteil einer Ringbrennkammer im Bereich einer einzelnen Brennermanschette,
Fig. 2
die Ansicht F aus Fig. 1,
Fig. 3
einen Teil des Schnittes A-A aus Fig. 2 in vergrößerter Darstellung,
Fig. 4
nochmals die Ansicht F, wobei lediglich das Halteteil dargestellt ist,
Fig. 5
nochmals den Teil-Schnitt A-A, wobei abermals lediglich das Halteteil dargestellt ist, sowie
Fig. 6
die Ansicht F, wobei lediglich die Brennermanschette dargestellt ist.
The invention is explained in more detail with reference to a preferred exemplary embodiment.
It shows
Fig. 1
a partial section through the head part of an annular combustion chamber in the area of a single burner collar,
Fig. 2
the view F from FIG. 1,
Fig. 3
3 shows a part of the section AA from FIG. 2 in an enlarged view,
Fig. 4
view F again, only the holding part being shown,
Fig. 5
again the partial section AA, again only the holding part is shown, and
Fig. 6
view F, only the burner collar being shown.

Mit der Bezugsziffer 1 ist die Außenwand und mit der Bezugsziffer 2 die Stirnwand einer an sich üblichen Ringbrennkammer einer Gasturbine bezeichnet. In Fig. 1 dargestellt ist lediglich das Kopfteil dieser Gasturbinen-Ringbrennkammer, dabei findet die Verbrennung im der eigentlichen Brennkammer 3, die gemäß Fig. 1 linksseitig von der Stirnwand 2 begrenzt wird, statt.Reference number 1 is the outer wall and reference number 2 is the end wall referred to a conventional ring combustion chamber of a gas turbine. In Fig. 1 only the head part of this gas turbine annular combustion chamber is shown combustion takes place in the actual combustion chamber 3, which according to FIG. 1 is delimited on the left side by the end wall 2 instead.

In die Brennkammer 3 eingeführt wird Kraftstoff und Luft über mehrere ringförmig angeordnete, hier nicht gezeigte Brenner, die jeweils von einer Brennermanschette gehalten werden. Eine derartige Brennermanschette 4 ist in Fig. 1 dargestellt. Diese Brennermanschette 4 ist in eine Durchtrittsöffnung 5 in der Stirnwand 2 eingesetzt und soll dabei radial verschiebbar gehalten sein. Diese radial verschiebbare Positionierung der Brennermanschette 4 erfolgt unter Zuhilfenahme eines Halteteiles 6, das zusammen mit einem ebenfalls in die Durchtrittsöffnung eingesetzten üblichen Hitzeschild 7 an der Stirnwand 2 verschraubt ist.Fuel and air are introduced into the combustion chamber 3 via a plurality of rings arranged burner, not shown here, each by a burner collar being held. Such a burner collar 4 is shown in FIG. 1. This burner collar 4 is inserted into a passage opening 5 in the end wall 2 and should be kept radially displaceable. This radially displaceable The burner collar 4 is positioned with the aid of a Holding part 6, which together with one also inserted into the passage opening usual heat shield 7 is screwed to the end wall 2.

Das Hitzeschild 7, das wie üblich die der eigentlichen Brennkammer 3 zugewandte Stirnwand-Rückseite 2a zur Brennkammer 3 hin abdeckt, weist einen Ringansatz 7a auf, der paßgenau in der Durchtrittsöffnung 5 geführt ist. Dabei kommt ein Abschnitt des Ringansatzes 7a auf der Vorderseite 2b der Stirnwand 2 zum Liegen, so daß auf diesem Abschnitt des Ringansatzes 7a das ringförmig ausgebildete Halteteil 6 aufgesteckt bzw. aufgesetzt werden kann.The heat shield 7, which, as usual, faces the actual combustion chamber 3 End wall rear 2a covers towards the combustion chamber 3, has a ring approach 7a, which is guided in a precise fit in the passage opening 5. Here comes a section the ring shoulder 7a on the front 2b of the end wall 2 for lying, so that on this section of the ring extension 7a the ring-shaped Holding part 6 can be plugged on or put on.

Die Ringförmigkeit des Halteteiles 6 ergibt sich insbesondere aus den Fig. 2 und 4. Wie die Schnittdarstellungen in den Fig. 3 und 5 zeigen, besitzt dieses Halteteil 6 Flanken 8a, 8b, zwischen denen die Brennermanschette 4 mit ihren daran angeordneten Laschen 9a gehalten ist. Die Ausbildung der Laschen 9a wird dabei am besten aus Fig. 6 ersichtlich. Wie dargestellt ragen die beiden Laschen 9a, die sich jeweils nur über ein Segment bzw. einen Sektor der ringförmigen Brennermanschette 4 erstrecken, von einem umlaufenden Steg 9b dieser Brennermanschette 4 ab.The annular shape of the holding part 6 results in particular from FIGS. 2 and 4. As the sectional views in FIGS. 3 and 5 show, this holding part 6 Flanks 8a, 8b, between which the burner collar 4 with their arranged thereon Tabs 9a is held. The formation of the tabs 9a is best seen in Fig. 6. As shown, the two tabs 9a project only over one segment or one sector of the annular burner collar 4 extend from a circumferential web 9b of this burner collar 4 from.

Ebenfalls nur über einen Sektor bzw. ein Segment des ringförmigen Halteteiles 6 erstrecken sich die beiden in der gleichen Ebene liegenden Flanken 8a des Halteteiles 6, während die zweite Flanke 8b ebenfalls umlaufend ausgebildet ist, wie aus Fig. 4 und aus Fig. 1 hervorgeht. Vorgesehen sind ferner im Bereich der beiden Flanken 8a jeweils Nasen 8c, deren Funktion noch erläutert wird.Also only over a sector or a segment of the annular holding part 6 the two flanks 8a of the holding part lying in the same plane extend 6, while the second flank 8b is also circumferential, as in FIG Fig. 4 and from Fig. 1 emerges. Are also provided in the area of the two Flanks 8a each have lugs 8c, the function of which will be explained below.

Aufgrund der segmentweisen Ausbildung bzw. Anordnung der Flanken 8a sowie der Laschen 9a ist es möglich, die Brennermanschette 4 bajonettverschlußartig in das Halteteil 6 einzusetzen, wobei an der umlaufenden Flanke 8b des Halteteiles nicht nur die Laschen 9a, sondern auch der umlaufende Steg 9b der Brennermanschette 4 zum Anliegen kommen. Nach einer Relativverdrehung der beiden Bauteile zueinander sind dann letztendlich die Laschen 9a zwischen den beiden Flanken 8a und 8b gehalten, wobei eine radiale Verschiebbarkeit der Brennermanschette 4 gegenüber dem Halteteil 6 gewährleistet ist. Um ein Zurückdrehen der Brennermanschette 4 aus dem Bajonettverschluß heraus zu verhindern, werden nach Montage der Brennermanschette 4 die beiden Nasen 8c aufgebogen, so daß bei einer evtl. Drehbewegung die Laschen 9a an den Nasen 8c zum Anliegen kommen.Due to the segmental formation or arrangement of the flanks 8a and of the tabs 9a, it is possible to insert the burner collar 4 in a bayonet-like manner to insert the holding part 6, on the circumferential flank 8b of the holding part not only the tabs 9a, but also the peripheral web 9b of the burner collar 4 concern. After a relative rotation of the two components the tabs 9a between the two flanks are then ultimately to one another 8a and 8b, with a radial displaceability of the burner collar 4 compared to the holding part 6 is guaranteed. To turn back the To prevent burner collar 4 from the bayonet lock after assembly of the burner collar 4, the two lugs 8c are bent so that in the event of a possible rotary movement, the tabs 9a bear against the lugs 8c come.

Schließlich kann das Halteteil 6 an der Stirnwand 2 verschraubt werden und zwar zusammen mit dem Hitzeschild 7, das hierzu mit mehreren Stehbolzen 13 versehen ist. An den Flanken 8a des Halteteiles 6 sind Ösen 11 vorgesehen. Diese Ösen 11 sind dabei derart angeordnet, daß das Halteteil 6 an der Vorderseite 2b der Stirnwand 2 auf die durch Schraubenlöcher 12 in der Stirnwand 2 hindurchgesteckte Stehbolzen 13 aufgesetzt werden kann. Die Montage erfolgt dabei derart, daß zunächst das Hitzeschild 7 von der Stirnwand-Rückseite 2a her eingesetzt wird, daß anschließend von der Stirnwand-Vorderseite 2b aus die vormontierte Brennermanschette 4 mit dem Halteteil 6 aufgesetzt wird, und daß anschließend die Muttern 14 auf die Stehbolzen 13 aufgeschraubt werden, wodurch die in ihrer Gesamtheit mit 10 bezeichnete Verschraubung gebildet wird. Auf einfachste Weise ist somit die Brennermanschette befestigt und dabei radial verschiebbar positioniert.Finally, the holding part 6 can be screwed onto the end wall 2, specifically together with the heat shield 7, which for this purpose is provided with a plurality of stud bolts 13 is. Eyelets 11 are provided on the flanks 8a of the holding part 6. This Eyelets 11 are arranged such that the holding part 6 on the front 2b the end wall 2 on the inserted through screw holes 12 in the end wall 2 Stud 13 can be placed. The assembly takes place in such a way that first the heat shield 7 is inserted from the front wall rear 2a is that the pre-assembled from the front wall front 2b Burner collar 4 is placed with the holding part 6, and that then the nuts 14 are screwed onto the stud bolts 13, whereby the in their Entire with 10 designated screw connection is formed. In the simplest way the burner collar is thus attached and positioned radially displaceable.

Die beschriebene Anordnung zeichnet sich aber nicht nur durch eine geringe Bauteilanzahl bei äußerst einfacher Montage aus, sondern hat darüber hinaus weitere funktionale Vorteile: Wie Fig. 2 zeigt, sind in der Stirnwand 2 wie üblich eine Vielzahl von Kühlluftlöchern 15 vorgesehen. Über diese Kühlluftlöcher 15 wird den thermisch hoch beanspruchten Bauteilen in der Brennkammer 3 Kühlluft zugeführt. Insbesondere wird hierdurch die der Stirnwand 2 zugewandte Rückseite des Hitzeschildes 7 gekühlt. Wie ersichtlich können dabei mit Ausnahme der Bereiche direkt hinter dem umlaufenden Steg 9b sowie der Bereiche der Flanken 8a eine Vielzahl von Kühlluftlöchem 15 in der Stirnwand 2 vorgesehen werden, so daß eine optimale Kühlluftführung ermöglicht wird. Ferner wird eine optimale Kühlung des Hitzeschildes 7 auch dadurch ermöglicht, daß zwischen der Stirnwand 2 sowie der Rückseite des Hitzeschildes 7 keine Teile vorhanden sind, die eine Kühlluftbeaufschlagung des Hitzeschildes 7 behindern.The arrangement described is not only characterized by a small number of components with extremely simple assembly, but also has more Functional advantages: As FIG. 2 shows, there are a multitude in the end wall 2 as usual provided by cooling air holes 15. About these cooling air holes 15 is the thermally highly stressed components in the combustion chamber 3 cooling air supplied. In particular, this means that the rear side of the heat shield facing the end wall 2 7 cooled. As can be seen, with the exception of the areas directly a large number behind the circumferential web 9b and the areas of the flanks 8a of cooling air holes 15 are provided in the end wall 2, so that an optimal Cooling air flow is made possible. Furthermore, an optimal cooling of the heat shield 7 also allows that between the end wall 2 and the Back of the heat shield 7 there are no parts that are exposed to cooling air of the heat shield 7 hinder.

Ein Vorteil der beschriebenen Anordnung ist auch, daß die einzelnen Bauelemente relativ einfach gestaltet sein können. Dennoch ist höchste Funktionalität gewährleistet. Insbesondere wird mit der gezeigten Anordnung die Dichtmanschette in axialer Richtung ausreichend fest gegen das Halteteil 6 gepreßt, welches seinerseits ausreichend dichtend auf dem Ringansatz 7a des Hitzeschildes 7 sitzt. Da letzteres paßgenau in der Durchtrittsöffnung 5 in der Stirnwand 2 geführt ist, ist mit der gezeigten Anordnung das Volumen der Brennkammer 3 in ausreichender Weise gegenüber dem in Fig. 1 linksseitig der Vorderseite 2b der Stirnwand 2 befindlichen Dump-Diffusor abgedichtet. Darauf hingewiesen werden soll weiterhin, daß selbstverständlich eine Vielzahl von Details insbesondere konstruktiver Art durchaus abweichend vom gezeigten Ausführungsbeispiel gestaltet sein können, ohne den Inhalt der Patentansprüche zu verlassen.Another advantage of the arrangement described is that the individual components can be relatively simple. Nevertheless, maximum functionality is guaranteed. In particular, with the arrangement shown, the sealing collar in axially pressed sufficiently firmly against the holding part 6, which in turn is seated on the ring shoulder 7a of the heat shield 7 in a sufficiently sealing manner. There the latter is guided with a precise fit in the passage opening 5 in the end wall 2, is with the arrangement shown, the volume of the combustion chamber 3 in sufficient Way compared to that in Fig. 1 on the left side of the front 2b of the end wall 2 Dump diffuser sealed. It should also be pointed out that of course a multitude of details, particularly of a constructive nature can be designed quite differently from the exemplary embodiment shown, without leaving the content of the claims.

Claims (5)

  1. A head component of a gas turbine annular combustion chamber, in whose front wall (2) burner sleeves (4) are arranged in a ring formation, which each accept one burner and each is fastened to the front wall (2) by means of a retaining component (6), which, together with a heat shield (7) inserted into the entry opening (5) for the burner sleeves (4) and covering the rear side (2a) of the front wall to the combustion chamber (3), are radially positioned in a movable fashion, whereby the annular formed retaining component (6) has flanges (8a, 8b) at least in segments, between which the burner sleeve (4) is retained by tongues (9a) arranged thereon and whereby the retaining component (6) is mounted on a ring extension (7a) positioned on the forward side (2b) of the front wall of the heat shield (7),
    characterised in that the burner sleeves (4) are retained in a bayonet type fastening by their tongues (9a) between the flanges (8a, 8b) of the retaining component (6), which together with the heat shield (7) is screwed to the front wall (2).
  2. A head component according to Claim 1,
    characterised in that the retaining component (6) has noses (8c) in the region of the flanges (8a), which, after bending, secure against unscrewing of the burner sleeve (4).
  3. A head component according to Claim 1 or Claim 2,
    characterised in that the flange (8b) of the retaining component (6) facing the front wall (2) is circumferential and the flanges (8a) of the burner sleeve (4) pertaining to the tongues (9a) are provided in the region of the screw joints.
  4. A head component according to one of the foregoing claims,
    characterised in that the screw joint (10) is formed by captive bolts (13) provided on the heat shield (7).
  5. A head component according to one of the claims 1 to 4,
    characterised in that the ring extension (7a) of the heat shield (7) is taken with an exact fit into the entry opening (5) in the front wall (2).
EP96914102A 1995-04-27 1996-04-23 Headpiece of a gas turbine ring-shaped combustion chamber Expired - Lifetime EP0823035B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19515537A DE19515537A1 (en) 1995-04-27 1995-04-27 Head part of a gas turbine annular combustion chamber
DE19515537 1995-04-27
PCT/EP1996/001687 WO1996034234A1 (en) 1995-04-27 1996-04-23 Headpiece of a gas turbine ring-shaped combustion chamber

Publications (2)

Publication Number Publication Date
EP0823035A1 EP0823035A1 (en) 1998-02-11
EP0823035B1 true EP0823035B1 (en) 2000-02-09

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Family Applications (1)

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EP96914102A Expired - Lifetime EP0823035B1 (en) 1995-04-27 1996-04-23 Headpiece of a gas turbine ring-shaped combustion chamber

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US (1) US5996335A (en)
EP (1) EP0823035B1 (en)
CA (1) CA2219195A1 (en)
DE (2) DE19515537A1 (en)
WO (1) WO1996034234A1 (en)

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US7721548B2 (en) 2006-11-17 2010-05-25 Pratt & Whitney Canada Corp. Combustor liner and heat shield assembly
US7748221B2 (en) 2006-11-17 2010-07-06 Pratt & Whitney Canada Corp. Combustor heat shield with variable cooling

Also Published As

Publication number Publication date
US5996335A (en) 1999-12-07
WO1996034234A1 (en) 1996-10-31
EP0823035A1 (en) 1998-02-11
DE19515537A1 (en) 1996-10-31
DE59604426D1 (en) 2000-03-16
CA2219195A1 (en) 1996-10-31

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