EP2596290A2 - Heat shield element - Google Patents

Heat shield element

Info

Publication number
EP2596290A2
EP2596290A2 EP11721510.3A EP11721510A EP2596290A2 EP 2596290 A2 EP2596290 A2 EP 2596290A2 EP 11721510 A EP11721510 A EP 11721510A EP 2596290 A2 EP2596290 A2 EP 2596290A2
Authority
EP
European Patent Office
Prior art keywords
heat shield
shield element
side wall
passage
recess
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
EP11721510.3A
Other languages
German (de)
French (fr)
Other versions
EP2596290B1 (en
Inventor
Andreas Böttcher
Olga Deiss
Christopher Grandt
Thomas Grieb
Ljiljana Hanf
Andre Kluge
Christian Scholz
Rostislav TETERUK
Daniel Vogtmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP11721510.3A priority Critical patent/EP2596290B1/en
Publication of EP2596290A2 publication Critical patent/EP2596290A2/en
Application granted granted Critical
Publication of EP2596290B1 publication Critical patent/EP2596290B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components

Definitions

  • the invention relates to a heat shield element according to the
  • This cooling air is also used to specifically blow on the metallic brackets and thus to cool, with which the ceramic heat shield elements (CHS, Ceramic Heat Shields) are clamped to the support structure.
  • CHS Ceramic Heat Shields
  • the heat shield elements are successively inserted with the holders in the grooves of the support structure, wherein the trailing elements obstruct the previously positioned in their positions.
  • a circular series of heat shield elements can be formed in a combustion chamber of a gas turbine.
  • the last remaining heat shield element can not be mounted in this way because the mutually present, adjacent heat shield elements block a tangentially directed assembly movement. Often one becomes
  • Screw through the fixation can tap with tape and thus can not be inserted into the holes provided. Since it is the last heat shield element, the screws can not be positioned by hand, but must by Allen - without sight - in the
  • the present invention makes it a task, a
  • Heat shield element having at least one side wall, wherein the side wall at least one recess with a in
  • Direction of a support structure facing passage includes.
  • a fastening screw can be introduced, which passes through the passage for the vertical fastening of the
  • Heat shield element on a provided in the support structure screwing is feasible.
  • the passage in the side wall is a securing means which is at least partially formed by the side wall. The securing means causes the lateral falling out of the fastening screw from the heat shield element in the
  • Heat shield element is significantly shortened.
  • the securing means prevents a lateral falling out of the fastening screw from the passage during assembly.
  • the securing means is a wedge-shaped
  • the securing means is a web-shaped
  • the web-shaped side wall piece has a
  • Fixing screw can be so easy to her
  • Fig. 1 shows a partial cross-sectional view through a
  • Fig. 2 shows a plan view of a first
  • FIG. 3 shows a partial cross-sectional view through a first heat shield element according to the invention
  • Fig. 4 shows a plan view of a second
  • Heat shield element according to the invention.
  • each recess 4 further has in the direction of the support structure 17 facing passages, which are formed in the prior art as a lateral recess 1.
  • a fastening screw 18 is inserted laterally.
  • Screw head of the fastening screw 18 is a disc or an angle plate 2 is attached, which the
  • Angle plate 2 can thus be inserted laterally into the lateral recess 1 and recess 4. In the head of the
  • Fixing screw 18 is a mold cavity for receiving a correspondingly shaped tool tip of a
  • Inbussteckeducationen performed, but may also have other forms, such as cross or transverse slot.
  • Fixing screw 18 is in each case an access opening 5 on the part of the hot side 21 of the heat shield element 13
  • this access opening 5 is substantially smaller than the diameter of the head 2 of the fastening screw 18 and is dimensioned such that it is sufficient to allow a screwing tool to pass.
  • Recesses 4 to the metallic discs 2 and heads of the mounting screws 18. Further, the recesses 4 are purged by the cooling fluid, which is injected through the intermediate gaps d from the support structure 17 into the combustion chamber to lock the wells 4 against the entry of hot gas ,
  • the intermediate gap d is provided to the thermal
  • Each fastening screw 18 is screwed into a screw in the support structure 17, in the present Example is executed in each case as a disc spring assembly 19.
  • a threaded nut (not shown) serves to secure the
  • Disc spring assemblies 19 provide for a resilient yielding attachment of the heat shield element 13, which is required to z. B. due to thermal and thermoacoustic
  • FIG. 2 shows a plan view of a first heat shield element 14 according to the invention.
  • the heat shield element 14 has a depression 4 with a passage 30 in the direction of
  • Support structure 17 ( Figure 1) for vertically attaching the heat shield member 14 to the support structure 17 ( Figure 1) by means of the attachment screw 18 (Figure 3) to a bolting means 19 ( Figure 1) provided in the support structure 17 ( Figure 1). 1) .
  • an oblique recess 31 is now mounted in the side wall 16, in which the
  • Fixing screw 18 (Fig. 3) can be inserted from the outside.
  • Fig. 3 shows the introduction of a fastening screw 18 in such a heat shield element 14.
  • the fastening screw 18 is inserted from the outside. Subsequently, the fastening screw 18 is tilted 40 and is thus brought into its final mounting position. By tilting 40 of the head of the fastening screw 18 slides into the recess 4 and the stem of the fastening screw 18 into the passage 30.
  • a wedge-shaped side wall portion 44 is formed at the passage 30, which serves as a securing means. This wedge-shaped
  • Heat shield element edges are prevented.
  • the recess 31 can also be introduced in the manufacture of the heat shield element 14 with equal, so that here no
  • Fig. 4 shows a plan view of a second
  • Heat shield element 14 according to the invention
  • Securing means a web-shaped side wall piece 41. This is attached to the passage 30.
  • Fixing screw 18 (Fig. 1) counteracts in the direction of the opening 42.
  • the heat shield element 14 now has more ceramic material on the side wall 16 in the region of the depression 4 than the heat shield element 13 with the

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Exhaust Silencers (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Connection Of Plates (AREA)
  • Fuses (AREA)

Abstract

The invention relates to a heat shield element having at least one side wall (16), wherein the side wall (16) comprises at least one depression (4) having a passage (30) that points in the direction of a supporting structure (17), wherein a fixing screw (18) can be introduced into the depression (4) and can be led through the passage (30) for fixing the heat shield element (14) perpendicularly to a screw fixing means (19) provided on the supporting structure (17), wherein the passage (30) in the side wall (16) comprises a securing means (41, 42) which is at least partly formed by the side wall (16), and wherein the securing means (41, 44) prevents the fixing screw (18) falling laterally out of the passage (30) during installation.

Description

Beschreibung description
Hitzeschildelement Heat shield element
Die Erfindung betrifft ein Hitzeschildelement nach dem The invention relates to a heat shield element according to the
Oberbegriff des Anspruchs 1. Preamble of claim 1.
In vielen technischen Anwendungen werden leistungsfähige keramische Hitzeschildelemente verwendet, um Temperaturen zwischen 1000 und 1600 Grad Celsius zu widerstehen. In many technical applications, powerful ceramic heat shield elements are used to withstand temperatures between 1000 and 1600 degrees Celsius.
Insbesondere die Hitzeschildelemente von Turbinenmaschinen wie Gasturbinen und Turbinentriebwerken, wie sie in In particular, the heat shield elements of turbine engines such as gas turbines and turbine engines, as in
stromerzeugenden Kraftwerken und in größeren Flugzeugen power-generating power plants and larger aircraft
Verwendung finden, weisen entsprechend große durch Use, have correspondingly large
Hitzeschilde abzuschirmende Flächen im Inneren der Heat shields surfaces to be shielded inside the
Brennkammern auf. Wegen der thermischen Ausdehnung und wegen großer Abmessungen muss der Schild aus einer Vielzahl Combustion chambers on. Because of the thermal expansion and large dimensions of the shield must be made of a variety
einzelner aus Keramik hergestellter Hitzeschildelemente zusammengesetzt werden, die voneinander mit einem are made of ceramic manufactured heat shield elements composed of one another with a
ausreichenden Spalt beabstandet sind. Dieser Spalt bietet den Hitzeschildelementen ausreichenden Raum für die thermische Ausdehnung. Da jedoch der Spalt auch einen direkten Kontakt der heißen Verbrennungsgase mit der das Hitzeschildelement tragenden Tragstruktur ermöglicht, wird als eine effektive Gegenmaßnahme durch die Spalte in Richtung der Brennkammer ein Kühlfluid in Form von Kühlluft über Kühlkanäle sufficient gap are spaced. This gap provides the heat shield elements with sufficient space for thermal expansion. However, since the gap also enables direct contact of the hot combustion gases with the support structure carrying the heat shield member, cooling fluid in the form of cooling air via cooling passages becomes effective countermeasure through the gaps in the direction of the combustion chamber
eingeblasen. Diese Kühlluft wird ferner dazu verwendet, gezielt die metallischen Halterungen anzublasen und somit zu kühlen, mit welchen die keramischen Hitzeschildelemente (CHS, Ceramic Heat Shields) an der Tragstruktur verklammert sind. blown. This cooling air is also used to specifically blow on the metallic brackets and thus to cool, with which the ceramic heat shield elements (CHS, Ceramic Heat Shields) are clamped to the support structure.
Um die Halterungen möglichst einfach und einteilig To keep the brackets as simple and as one piece
auszuführen, ist eine Bauweise bekannt, bei der diese To execute, a construction is known in which this
Halterungen einerseits in die in der Tragstruktur Mounts on the one hand in the support structure
kreisumlaufend und parallel ausgebildete Montage-Nuten eingreifend einschiebbar sind, und andererseits mit circular encircling and parallel trained mounting grooves are inserted insertively, and on the other hand with
ausgebildeten Greifabschnitten in die in seitlichen Kanten der keramischen Hitzeschildelemente ausgebildete Halternuten verklammert werden. Die Hitzeschildelemente werden nacheinander mit den Haltern in die Nuten der Tragstruktur eingeschoben, wobei die nachkommenden Elemente die vorher positionierten in ihren Positionen versperren. Auf diese Weise kann beispielsweise eine kreisumlaufende Reihe von Hitzeschildelementen in einer Brennkammer einer Gasturbine gebildet werden. trained gripping portions formed in the lateral edges of the ceramic heat shield elements Halutenuten be clamped. The heat shield elements are successively inserted with the holders in the grooves of the support structure, wherein the trailing elements obstruct the previously positioned in their positions. In this way, for example, a circular series of heat shield elements can be formed in a combustion chamber of a gas turbine.
Das letzte verbleibende Hitzeschildelement kann jedoch nicht mehr auf diese Weise montiert werden, weil die beiderseits vorhandenen, benachbarten Hitzeschildelemente eine tangential gerichtete Montagebewegung blockieren. Oft wird ein However, the last remaining heat shield element can not be mounted in this way because the mutually present, adjacent heat shield elements block a tangentially directed assembly movement. Often one becomes
derartiges letztes Hitzeschildelement als eine such last heat shield element as a
Attrappenplatte oder Attrappe bezeichnet. Folglich werden zum Anbringen des letzten Hitzeschildelements Lösungen mit  Dummy plate or dummy called. Consequently, solutions for attaching the last heat shield element with
Verschraubungen angewendet, die eine Montage des Glands applied, which is an assembly of the
Hitzeschildelements in Richtung der Flächennormalen der Heat shield element in the direction of the surface normal of
Tragstruktur ermöglichen. Eine bekannte Verschraubung benutzt hierzu vier Schrauben, die in die, in seitlichen Wänden des Hitzeschildelements hierfür ausgebildete Aussparungen, eingreifen. Diese Lösung ist dadurch benachteiligt, dass die Montage ein Enable support structure. A known screwing uses this four screws, which engage in the, formed in lateral walls of the heat shield element recesses for this purpose. This solution is disadvantaged by the fact that the assembly
Handhabungsproblem bedingt. Die Handhabung der vier Schrauben erzwingt beispielsweise die Verwendung von zuverlässigen Fixiermitteln wie Verklebung oder Klebeband. Gehen die Handling problem conditionally. The handling of the four screws, for example, forces the use of reliable fixatives such as adhesive or tape. Go the
Schrauben verloren, so müssen sie wegen hoher Lost screws, so they have to because of high
Beschädigungsgefahr einer Turbine unbedingt vor Risk of damage to a turbine before
Inbetriebnahme gefunden werden. Ferner ist eine Über-Kopf- Montage notwendig, welche sehr schwierig ist, da die Commissioning can be found. Furthermore, an overhead mounting is necessary, which is very difficult, since the
Schrauben durch die Fixierung per Klebeband verkippen können und somit nicht in die vorgesehenen Bohrungen eingeführt werden können. Da es sich um das letzte Hitzeschildelement handelt, können die Schrauben nicht per Hand positioniert werden, sondern müssen per Inbus - ohne Sicht - in die  Screw through the fixation can tap with tape and thus can not be inserted into the holes provided. Since it is the last heat shield element, the screws can not be positioned by hand, but must by Allen - without sight - in the
Bohrungen eingefädelt werden. Es ist insbesondere schwierig, die Befestigungsschrauben in die entsprechenden Gewindebohrungen der Tragstruktur Drilled holes. In particular, it is difficult to insert the fastening screws into the corresponding threaded bores of the support structure
einzufädeln . Die vorliegende Erfindung macht es sich zur Aufgabe, einto thread. The present invention makes it a task, a
Hitzeschildelement anzugeben, insbesondere einen Schlussstein oder eine Attrappe, das eine einfache Montage an der Specify heat shield element, in particular a keystone or a dummy that a simple installation on the
Tragstruktur zulässt. Diese Aufgabe wird gelöst durch die Angabe eines Support structure allows. This task is solved by specifying a
Hitzeschildelements mit mindestens einer Seitenwand, wobei die Seitenwand zumindest eine Vertiefung mit einem in  Heat shield element having at least one side wall, wherein the side wall at least one recess with a in
Richtung einer Tragstruktur weisenden Durchlass umfasst. In der Vertiefung ist eine Befestigungsschraube einbringbar, die durch den Durchlass zum senkrechten Befestigen des Direction of a support structure facing passage includes. In the recess, a fastening screw can be introduced, which passes through the passage for the vertical fastening of the
Hitzeschildelements an einem in der Tragstruktur vorgesehenen Verschraubungsmittel durchführbar ist. Erfindungsgemäß ist der Durchlass in der Seitenwand ein Sicherungsmittel, welches zumindest teilweise durch die Seitenwand gebildet wird. Das Sicherungsmittel bewirkt, dass das seitliche Herausfallen der Befestigungsschraube aus dem Hitzeschildelement bei der  Heat shield element on a provided in the support structure screwing is feasible. According to the invention, the passage in the side wall is a securing means which is at least partially formed by the side wall. The securing means causes the lateral falling out of the fastening screw from the heat shield element in the
Montage erschwert oder gar verhindert wird. Somit ist eine schnellere, vereinfachte und sichere Montage des keramischen Hitzeschildelements, insbesondere der keramischen Attrappe, ohne zusätzliche Montagemittel wie Klebeband und Mounting difficult or even prevented. Thus, a faster, simplified and secure mounting of the ceramic heat shield element, in particular the ceramic dummy, without additional mounting means such as tape and
Montagebänder möglich. Die Einbaudauer eines solchen  Assembly tapes possible. The installation duration of such
Hitzeschildelements wird dadurch wesentlich verkürzt. Das Sicherungsmittel verhindert ein seitliches Herausfallen der Befestigungsschraube aus dem Durchlass bei der Montage. Heat shield element is significantly shortened. The securing means prevents a lateral falling out of the fastening screw from the passage during assembly.
Bevorzugt ist das Sicherungsmittel ein keilförmiges Preferably, the securing means is a wedge-shaped
Seitenwandstück, welches durch eine schräge Ausnehmung am Durchlass ausgebildet wird. Eine solche schräge Ausnehmung kann gleich bei der Fertigung miteingebracht werden, so dass hier kein zusätzlicher Fertigungsschritt mehr notwendig ist. Alternativ ist das Sicherungsmittel ein stegförmiges Side wall piece, which is formed by an oblique recess at the passage. Such an oblique recess can be incorporated directly in the production, so that no additional manufacturing step is necessary here. Alternatively, the securing means is a web-shaped
Seitenwandstück. Dieses ist direkt am Durchlass angebracht und kann ebenfalls direkt bei der Fertigung des gesamten Hitzeschildelements mitangebracht z.B. miteingegossen werden. Bevorzugt weist das stegförmige Seitenwandstück eine Sidewall piece. This is attached directly to the passage and can also be incorporated directly in the manufacture of the entire heat shield element, e.g. be poured into it. Preferably, the web-shaped side wall piece has a
seitliche Öffnung auf, in die die Befestigungsschraube einbringbar und parallel zum stegförmigen Seitenwandstück in Richtung Vertiefung mit Durchlass verschiebbar ist. Die lateral opening into which the fastening screw can be introduced and parallel to the web-shaped side wall piece in the direction of recess with passage displaced. The
Befestigungsschraube kann so sehr einfach zu ihrem Fixing screw can be so easy to her
Montageplatz hingeführt werden. Assembly site be guided.
Weitere Merkmale, Eigenschaften und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Figuren 1 bis 4. Further features, properties and advantages of the present invention will become apparent from the following description of embodiments with reference to the accompanying figures 1 to 4.
Fig. 1 zeigt eine Teilquerschnittsansicht durch eine Fig. 1 shows a partial cross-sectional view through a
Hitzeschildelementanordnung mit Hitzeschildelement nach dem Stand der Technik,  Heat shield element arrangement with heat shield element according to the prior art,
Fig. 2 zeigt eine Draufsicht auf ein erstes Fig. 2 shows a plan view of a first
erfindungsgemäßes Hitzeschildelement ,  heat shield element according to the invention,
Fig. 3 zeigt eine Teilquerschnittsansicht durch ein erstes erfindungsgemäßes Hitzeschildelement mit 3 shows a partial cross-sectional view through a first heat shield element according to the invention
Befestigungsschraube,  Mounting screw,
Fig. 4 zeigt eine Draufsicht auf ein zweites Fig. 4 shows a plan view of a second
erfindungsgemäßes Hitzeschildelement .  Heat shield element according to the invention.
Bei dem bekannten Hitzeschild werden die einzelnen In the known heat shield, the individual
Hitzeschildelemente 13 oder sogenannte Steine mithilfe von insgesamt vier Verschraubungen an der Tragstruktur 17 Heat shield elements 13 or so-called stones using a total of four screws on the support structure 17th
befestigt. Es handelt sich insbesondere um Schlusssteine oder Attrappen eines Hitzeschildes. In den seitlichen Wänden 16 des Hitzeschildelements 13 sind Vertiefungen 4 oder Taschen gebildet. Jede Vertiefung 4 weist ferner in Richtung der Tragstruktur 17 weisende Durchlässe auf, welche im Stand der Technik als eine seitliche Aussparung 1 ausgebildet sind. In die Vertiefungen 4 und den Aussparungen 1 wird eine Befestigungsschraube 18 seitlich eingelegt. Unter dem attached. In particular, they are keystones or dummies of a heat shield. In the side walls 16 of the heat shield element 13 recesses 4 or pockets are formed. Each recess 4 further has in the direction of the support structure 17 facing passages, which are formed in the prior art as a lateral recess 1. In the recesses 4 and the recesses 1, a fastening screw 18 is inserted laterally. Under the
Schraubenkopf der Befestigungsschraube 18 ist eine Scheibe bzw. ein Winkelblech 2 angebracht, welche die Screw head of the fastening screw 18 is a disc or an angle plate 2 is attached, which the
Befestigungsschraube 18 gegen eine Verdrehung fixiert. Fixing screw 18 fixed against rotation.
Die Befestigungsschraube 18 mit der Scheibe bzw. dem The fastening screw 18 with the disc or the
Winkelblech 2 kann somit seitlich in die seitliche Aussparung 1 und Vertiefung 4 eingelegt werden. Im Kopf der Angle plate 2 can thus be inserted laterally into the lateral recess 1 and recess 4. In the head of the
Befestigungsschraube 18 ist eine Formvertiefung zur Aufnahme einer korrespondierend geformten Werkzeugspitze eines Fixing screw 18 is a mold cavity for receiving a correspondingly shaped tool tip of a
Schraubwerkzeuges vorgesehen. Diese Formvertiefung und die Werkzeugspitze ist bevorzugt als eine der bekannten Wrench provided. This mold cavity and the tool tip is preferred as one of the known
Inbussteckverbindungen ausgeführt, kann jedoch auch andere Formen aufweisen, wie Kreuz- oder Querschlitz. Inbussteckverbindungen performed, but may also have other forms, such as cross or transverse slot.
Axial über der Formvertiefung des Kopfes der Axial over the depression of the head
Befestigungsschraube 18 ist seitens der Heißseite 21 des Hitzeschildelements 13 jeweils eine Zugangsöffnung 5 Fixing screw 18 is in each case an access opening 5 on the part of the hot side 21 of the heat shield element 13
durchgehend bis in den durch die Vertiefung 4 ausgebildeten Raum getrieben. Der Durchmesser dieser Zugangsöffnung 5 ist wesentlich kleiner, als der Durchmesser des Kopfes 2 der Befestigungsschraube 18 und ist so bemessen, dass er dazu ausreicht, ein Schraubwerkzeug passieren zu lassen. Im continuously driven into the space formed by the recess 4. The diameter of this access opening 5 is substantially smaller than the diameter of the head 2 of the fastening screw 18 and is dimensioned such that it is sufficient to allow a screwing tool to pass. in the
Betrieb des Hitzeschildelements gelangen heiße Operation of the heat shield element is hot
Verbrennungsgase daher nur im eingeschränkten Maße durch die in der Größe minimierten Zugangsöffnungen 5 in die  Combustion gases therefore only to a limited extent by the minimized access openings 5 in the
Vertiefungen 4 zu den metallischen Scheiben 2 und Köpfen der Befestigungsschrauben 18. Ferner werden die Vertiefungen 4 von dem Kühlfluid gespült, das durch die Zwischenspalte d von der Tragstruktur 17 aus in den Brennraum eingeblasen wird, um die Vertiefungen 4 gegen den Eintritt von Heißgas zu sperren. Der Zwischenspalt d ist vorgesehen, um der thermischen Recesses 4 to the metallic discs 2 and heads of the mounting screws 18. Further, the recesses 4 are purged by the cooling fluid, which is injected through the intermediate gaps d from the support structure 17 into the combustion chamber to lock the wells 4 against the entry of hot gas , The intermediate gap d is provided to the thermal
Ausdehnung einzelner Hitzschildelemente 8, 13 ausreichenden Raum zur Verfügung zu stellen. Extension of individual Hitzschildelemente 8, 13 to provide sufficient space.
Jede Befestigungsschraube 18 wird in eine Schraubverbindung in der Tragstruktur 17 eingeschraubt, die im vorliegenden Beispiel jeweils als ein Tellerfederpaket 19 ausgeführt ist. Eine (nicht dargestellte) Gewindemutter dient dazu, das Each fastening screw 18 is screwed into a screw in the support structure 17, in the present Example is executed in each case as a disc spring assembly 19. A threaded nut (not shown) serves to secure the
Tellerfederpaket 19 zu komprimieren. Die vorgespannten To compress plate spring packet 19. The preloaded
Tellerfederpakete 19 sorgen für eine federnd nachgebende Befestigung des Hitzeschildelements 13, die erforderlich ist, um z. B. aufgrund thermischer und thermoakustischer Disc spring assemblies 19 provide for a resilient yielding attachment of the heat shield element 13, which is required to z. B. due to thermal and thermoacoustic
Bedingungen induzierte Bewegungen auszugleichen. Conditions to compensate for induced movements.
Bei der konventionellen Montage müssen die vier In the conventional assembly, the four
Befestigungsschrauben 18 mit den Scheiben 2 in die jeweiligen seitlichen Vertiefungen 4 und Aussparungen 1 seitlich Fixing screws 18 with the discs 2 in the respective lateral recesses 4 and recesses 1 side
eingelegt werden und gegen Herausfallen während der Montage durch Klebebänder gesichert werden. Fig. 2 zeigt eine Draufsicht auf ein erstes erfindungsgemäßes Hitzeschildelement 14. Das Hitzeschildelement 14 weist eine Vertiefung 4 mit einem Durchlass 30 in Richtung der are inserted and secured against falling out during installation by adhesive tapes. FIG. 2 shows a plan view of a first heat shield element 14 according to the invention. The heat shield element 14 has a depression 4 with a passage 30 in the direction of
Tragstruktur 17 (Fig. 1) auf, zum senkrechten Befestigen des Hitzeschildelements 14 an der Tragstruktur 17 (Fig. 1) mithilfe der Befestigungsschraube 18 (Fig. 3) an einem in der Tragstruktur 17 (Fig. 1) vorgesehenen Verschraubungsmittel 19 (Fig. 1) . An dem Durchlass 30 ist nun eine schräge Ausnehmung 31 in der Seitenwand 16 angebracht, in welcher die Support structure 17 (Figure 1) for vertically attaching the heat shield member 14 to the support structure 17 (Figure 1) by means of the attachment screw 18 (Figure 3) to a bolting means 19 (Figure 1) provided in the support structure 17 (Figure 1). 1) . At the passage 30, an oblique recess 31 is now mounted in the side wall 16, in which the
Befestigungsschraube 18 (Fig. 3) von außen eingesetzt werden kann. Fixing screw 18 (Fig. 3) can be inserted from the outside.
Fig. 3 zeigt das Einbringen einer Befestigungsschraube 18 in ein solches Hitzeschildelement 14. In der schrägen Ausnehmung 31 wird die Befestigungsschraube 18 von außen eingesetzt. Anschließend wird die Befestigungsschraube 18 verkippt 40 und wird somit in ihre endgültige Montageposition gebracht. Durch das Verkippen 40 rutscht der Kopf der Befestigungsschraube 18 in die Vertiefung 4 sowie der Stiel der Befestigungsschraube 18 in den Durchlass 30. Durch die Ausnehmung 31 wird zudem am Durchlass 30 ein keilförmiges Seitenwandstück 44 ausgebildet, welches als Sicherungsmittel dient. Dieses keilförmige Fig. 3 shows the introduction of a fastening screw 18 in such a heat shield element 14. In the oblique recess 31, the fastening screw 18 is inserted from the outside. Subsequently, the fastening screw 18 is tilted 40 and is thus brought into its final mounting position. By tilting 40 of the head of the fastening screw 18 slides into the recess 4 and the stem of the fastening screw 18 into the passage 30. Through the recess 31 also a wedge-shaped side wall portion 44 is formed at the passage 30, which serves as a securing means. This wedge-shaped
Seitenwandstück 44 erschwert das seitliche Herausfallen der Befestigungsschraube 18 aus dem Hitzeschildelement 14 bei der Montage. Dadurch wird die Montage erheblich vereinfacht, so dass auf Hilfsmittel, wie Klebeband und Montagebänder, nun verzichtet werden kann. Zudem weist das Hitzeschildelement 14 nun im Bereich der Vertiefung 4 mehr keramisches Material an der Seitenwand 16 auf, als das Hitzeschildelement 13 mit der Aussparung 1 (Fig. 1) im Stand der Technik. Die Stabilität des erfindungsgemäßen Hitzeschildelements 14 wird somit im Bereich der Vertiefung 4 erhöht und ein Ausbrechen der Side wall piece 44 complicates the lateral falling out of the fastening screw 18 from the heat shield element 14 in the Assembly. As a result, the assembly is considerably simplified so that tools, such as adhesive tape and assembly tapes, can now be dispensed with. In addition, the heat shield element 14 now has more ceramic material on the side wall 16 in the region of the depression 4 than the heat shield element 13 with the recess 1 (FIG. 1) in the prior art. The stability of the heat shield element 14 according to the invention is thus increased in the region of the depression 4 and a breaking out of the
Hitzeschildelementkanten wird verhindert. Die Ausnehmung 31 kann zudem bei der Fertigung des Hitzeschildelements 14 gleich mit eingebracht werden, so dass hier kein Heat shield element edges are prevented. The recess 31 can also be introduced in the manufacture of the heat shield element 14 with equal, so that here no
zusätzlicher, kostenintensiver Fertigungsschritt mehr additional, costly production step more
notwendig ist. Fig. 4 zeigt eine Draufsicht auf ein zweites necessary is. Fig. 4 shows a plan view of a second
erfindungsgemäßes Hitzeschildelement 14. Dabei ist das Heat shield element 14 according to the invention
Sicherungsmittel ein stegförmiges Seitenwandstück 41. Dieses ist am Durchlass 30 angebracht. Das stegförmige Securing means a web-shaped side wall piece 41. This is attached to the passage 30. The bar-shaped
Seitenwandstück 41 erschwert das seitliche Herausfallen der Befestigungsschraube 18 (Fig. 1) aus dem Hitzeschildelement 14 bei der Montage. Das stegförmige Seitenwandstück 41 weist eine seitliche Öffnung 42 auf. In diese wird die Side wall piece 41 makes it more difficult for the fastening screw 18 (FIG. 1) to fall out of the heat shield element 14 during assembly. The web-shaped side wall piece 41 has a lateral opening 42. In these will be the
Befestigungsschraube 18 (Fig. 1) eingebracht. Anschließend wird die Befestigungsschraube 18 (Fig. 1) parallel zum stegförmigen Seitenwandstück 41 in Richtung Vertiefung 4 mit Durchlass 30 verschoben, und quasi somit in die Vertiefung 4 und in den Durchlass 30 hineingeschoben. Dabei kann das stegförmige Seitenwandstück 41 in Richtung der Öffnung 42 eine Verdickung aufweisen, was einem Herausfallen der Fixing screw 18 (Fig. 1) introduced. Subsequently, the fastening screw 18 (FIG. 1) is displaced parallel to the web-shaped side wall section 41 in the direction of the depression 4 with passage 30, and thus, as it were, pushed into the depression 4 and into the passage 30. In this case, the web-shaped side wall portion 41 in the direction of the opening 42 have a thickening, resulting in falling out of
Befestigungsschraube 18 (Fig. 1) in Richtung der Öffnung 42 entgegenwirkt. Auch hier weist das Hitzeschildelement 14 nun im Bereich der Vertiefung 4 mehr keramisches Material an der Seitenwand 16 auf als das Hitzeschildelement 13 mit der Fixing screw 18 (Fig. 1) counteracts in the direction of the opening 42. Here too, the heat shield element 14 now has more ceramic material on the side wall 16 in the region of the depression 4 than the heat shield element 13 with the
Aussparung 1 (Fig. 1) im Stand der Technik. Die Stabilität des erfindungsgemäßen Hitzeschildelements 14 wird somit im Bereich der Vertiefung 4 erhöht und ein Ausbrechen der Recess 1 (Fig. 1) in the prior art. The stability of the heat shield element 14 according to the invention is thus increased in the region of the depression 4 and a breaking out of the
Hitzeschildelementkanten wird verhindert. Heat shield element edges are prevented.

Claims

Patentansprüche claims
1. Hitzeschildelement (14) mit mindestens einer Seitenwand (16), wobei die Seitenwand (16) zumindest eine Vertiefung (4) mit einem in Richtung einer Tragstruktur (17) weisenden 1. heat shield element (14) with at least one side wall (16), wherein the side wall (16) at least one recess (4) with a pointing in the direction of a support structure (17)
Durchlass (30) umfasst, wobei in der Vertiefung (4) eine Befestigungsschraube (18) einbringbar ist, die durch den Durchlass (30) zum senkrechten Befestigen des Passage (30), wherein in the recess (4), a fastening screw (18) can be introduced through the passage (30) for vertically fixing the
Hitzeschildelements (14) an einem in der Tragstruktur (17) vorgesehenen Verschraubungsmittel (19) durchführbar ist, d a d u r c h g e k e n n z e i c h n e t, d a s s der Durchlass (30) in der Seitenwand (16) ein Sicherungsmittel (41,44) aufweist, welches zumindest teilweise durch die Heat shield element (14) on a in the support structure (17) provided Verschraubungsmittel (19) is feasible, d a d u r c h e c e n e c e n e, t a s s of the passage (30) in the side wall (16) a securing means (41,44) which at least partially through the
Seitenwand (16) gebildet wird und wobei das Sicherungsmittel (41,44) ein seitliches Herausfallen der Befestigungsschraube (18) aus dem Durchlass (30) bei der Montage verhindert. Side wall (16) is formed and wherein the securing means (41,44) prevents lateral falling out of the fastening screw (18) from the passage (30) during assembly.
2. Hitzeschildelement (14) nach Anspruch 1, 2. heat shield element (14) according to claim 1,
d a d u r c h g e k e n n z e i c h n e t, d a s s das Sicherungsmittel ein keilförmiges (44) Seitenwandstück ist, welches durch eine schräge Ausnehmung (31) am Durchlass (30) ausgebildet wird. That is, the securing means is a wedge-shaped (44) side wall piece which is formed at the passage (30) by an oblique recess (31).
3. Hitzeschildelement (14) nach Anspruch 1, 3. heat shield element (14) according to claim 1,
d a d u r c h g e k e n n z e i c h n e t, d a s s dasd a d u r c h e n c i n e, that is
Sicherungsmittel ein stegförmiges Seitenwandstück (41) ist. Securing means is a web-shaped side wall piece (41).
4. Hitzeschildelement (14) nach Anspruch 3, 4. heat shield element (14) according to claim 3,
d a d u r c h g e k e n n z e i c h n e t, d a s s das stegförmige Seitenwandstück (41) eine seitliche Öffnung (42) aufweist, in die die Befestigungsschraube (18) einbringbar und parallel zum stegförmigen Seitenwandstück (41) in The bridge-shaped side wall section (41) has a lateral opening (42) into which the fastening screw (18) can be introduced and parallel to the web-shaped side wall section (41) in FIG
Richtung Vertiefung (4) mit Durchlass (30) verschiebbar ist. Direction recess (4) with passage (30) is displaceable.
EP11721510.3A 2010-08-27 2011-05-19 Heat shield element Not-in-force EP2596290B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11721510.3A EP2596290B1 (en) 2010-08-27 2011-05-19 Heat shield element

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10174291A EP2423596A1 (en) 2010-08-27 2010-08-27 Heat shield element
EP11721510.3A EP2596290B1 (en) 2010-08-27 2011-05-19 Heat shield element
PCT/EP2011/058153 WO2012025265A2 (en) 2010-08-27 2011-05-19 Heat shield element

Publications (2)

Publication Number Publication Date
EP2596290A2 true EP2596290A2 (en) 2013-05-29
EP2596290B1 EP2596290B1 (en) 2015-08-05

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EP10174291A Withdrawn EP2423596A1 (en) 2010-08-27 2010-08-27 Heat shield element
EP11721510.3A Not-in-force EP2596290B1 (en) 2010-08-27 2011-05-19 Heat shield element

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EP (2) EP2423596A1 (en)
CN (1) CN103080651B (en)
RU (1) RU2561957C2 (en)
WO (1) WO2012025265A2 (en)

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DE102012204162A1 (en) * 2012-03-16 2013-09-19 Siemens Aktiengesellschaft Ring combustor bypass
DE102012022199A1 (en) 2012-11-13 2014-05-28 Rolls-Royce Deutschland Ltd & Co Kg Combustor shingle of a gas turbine
DE102013223258A1 (en) * 2013-11-14 2015-06-03 Rolls-Royce Deutschland Ltd & Co Kg Combustion heat shield element of a gas turbine
DE102014221225A1 (en) * 2014-10-20 2016-04-21 Siemens Aktiengesellschaft Heat shield element and method for its production
DE102019204746A1 (en) 2019-04-03 2020-10-08 Siemens Aktiengesellschaft Heat shield tile with damping function
US11603799B2 (en) * 2020-12-22 2023-03-14 General Electric Company Combustor for a gas turbine engine

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SU1392995A1 (en) * 1986-04-19 1994-04-15 Казахский научно-исследовательский институт энергетики Body of combustion chamber of mhd power plant
WO1999047874A1 (en) * 1998-03-19 1999-09-23 Siemens Aktiengesellschaft Wall segment for a combustion chamber and combustion chamber
DE10003728A1 (en) * 2000-01-28 2001-08-09 Siemens Ag Heat shield arrangement for a component carrying hot gas, in particular for structural parts of gas turbines
EP1284390A1 (en) * 2001-06-27 2003-02-19 Siemens Aktiengesellschaft Thermal shield for a component carrying hot gases, especially for structural components of gas turbines
EP1467151A1 (en) * 2003-04-10 2004-10-13 Siemens Aktiengesellschaft Heat shield element
EP1561997A1 (en) * 2004-01-27 2005-08-10 Siemens Aktiengesellschaft Heat Shield
EP1701095B1 (en) * 2005-02-07 2012-01-18 Siemens Aktiengesellschaft Heat shield
EP1884713B1 (en) * 2006-07-25 2010-12-29 Siemens Aktiengesellschaft Heat shield arrangement, particularly for a gas turbine
EP2230454A1 (en) * 2009-03-18 2010-09-22 Siemens Aktiengesellschaft Device for mounting a heat shield element
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Also Published As

Publication number Publication date
WO2012025265A2 (en) 2012-03-01
EP2596290B1 (en) 2015-08-05
CN103080651A (en) 2013-05-01
RU2561957C2 (en) 2015-09-10
RU2013113457A (en) 2014-10-10
WO2012025265A3 (en) 2013-01-03
EP2423596A1 (en) 2012-02-29
CN103080651B (en) 2016-03-02

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