EP1862740B1 - Combustion chamber wall - Google Patents

Combustion chamber wall Download PDF

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Publication number
EP1862740B1
EP1862740B1 EP06011276.0A EP06011276A EP1862740B1 EP 1862740 B1 EP1862740 B1 EP 1862740B1 EP 06011276 A EP06011276 A EP 06011276A EP 1862740 B1 EP1862740 B1 EP 1862740B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
spring
chamber wall
support structure
side facing
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.)
Not-in-force
Application number
EP06011276.0A
Other languages
German (de)
French (fr)
Other versions
EP1862740A1 (en
Inventor
Milan Schmahl
Marc Tertilt
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 EP06011276.0A priority Critical patent/EP1862740B1/en
Priority to US12/227,448 priority patent/US8069670B2/en
Priority to RU2008152071/06A priority patent/RU2437034C2/en
Priority to CN2007800203112A priority patent/CN101460783B/en
Priority to EP07726475A priority patent/EP2021695A1/en
Priority to PCT/EP2007/051717 priority patent/WO2007137883A1/en
Publication of EP1862740A1 publication Critical patent/EP1862740A1/en
Application granted granted Critical
Publication of EP1862740B1 publication Critical patent/EP1862740B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/141—Anchors therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/04—Supports for linings
    • 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
    • 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
    • F23R3/60—Support structures; Attaching or mounting means
    • 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
    • F23R2900/00005—Preventing fatigue failures or reducing mechanical stress in gas turbine components

Definitions

  • the invention relates to a combustion chamber wall with a combustion chamber comprising a support structure with a number of heat shields, which are fastened to the support structure with a fastening means, wherein the fastening means comprises a spring device.
  • the combustion chamber of a gas turbine is exposed to special loads, for example hot gases or vibrations.
  • loads for example hot gases or vibrations.
  • heat shields are mounted on the support structure, which protects the support structure from the hot gases and other loads.
  • Heat shields in a combustion chamber are attached to the support structure with a screw.
  • plate spring packs are used for mounting so-called plate spring packs.
  • Metallic heat shield plates are fastened centrally with the plate springs.
  • the disc spring assembly consists of a sleeve and arranged in the sleeve disc springs. These have on the inside a continuous axial hole.
  • the plate spring pack have at the axial hole partially on a thread.
  • the screw is screwed into this axial hole.
  • On the outside of the cup spring package so on the sleeve an external thread is attached. With this the cup spring package is screwed into the support structure.
  • a recess with a matching internal thread is provided in the support structure.
  • the screw head is now arranged in or on the heat shield.
  • the heat shield is attached to the support structure.
  • the screw may be such that it is screwed through the screwed in the support structure Diaphragm spring packet protrudes and extends even further into the recess of the support structure.
  • the sleeve In the direction of the combustion chamber, the sleeve has a fixed lid, which may also have an axial hole for receiving the screw. The lid is a part of the sleeve, so to speak. Thus, the disc springs do not fall into the combustion chamber.
  • the disc springs of the plate spring package are secured on the side toward the support structure with a retaining ring against falling out. Between safety ring and spring is further arranged a pressure plate.
  • the safety ring has often been solved in the past and or is broken. If, for example, a heat shield has to be dismantled / installed due to cracks or fractures, the springs and the pressure plate itself can fall into the combustion chamber if the safety ring is broken. These then have to be effortfully searched for and removed again. Also, the assembly of new plate spring package is difficult because the back of the support structure in some places, for. at the hub is not accessible from the outside.
  • the object of the invention is to specify a combustion chamber wall with a support structure and with heat shields which are fastened to the support structure, the attachment of these heat shields to the support structure being particularly service-friendly and easy to assemble / disassemble.
  • a combustion chamber wall having a combustion chamber comprising a support structure with a number of heat shields which are fastened to the support structure by a fastening means, and wherein the fastening means comprises a spring device, and wherein the spring device is firmly connected to the support structure, wherein the spring device consists at least of a spring mounted in a shell, wherein the shell has an external thread, wherein the spring is secured against falling out on the side facing away from the combustion chamber by a first captive, and wherein the spring device inside an axial hole for receiving having the fastener, and wherein the spring is secured by a second captive on the side facing the combustion chamber against falling out, wherein on the side facing the combustion chamber on the spring a locking plate is mounted, wherein on the combustion chamber side facing the locking plate a disc is attached, wherein the disc has a supporting external thread, wherein the external thread as well as the shell in the corresponding inner casing of the support structure can be screwed, so that the spring device on the side facing
  • the spring device according to the invention therefore consists of a spring, for example disc spring which is mounted in a shell with external thread.
  • the spring device has an axial hole on the inside. This is due to uniform load distribution mostly centered and is for the Recording the fastener, such as a screw, thought.
  • the fastening means such as the screw
  • the heat shield is attached to the support structure, for example, in which the Schaub head is mounted in or on the heat shield.
  • the spring device is firmly connected to the support structure.
  • a first captive securing device is now attached, which secures the spring in the sheath against falling out in the direction of the supporting structure. This can for example be a kind of cover.
  • This is now designed such that it can be expanded in the direction of the combustion chamber.
  • a locking plate is attached to the side facing the combustion chamber on the spring and a disc which has an external thread, wherein the external thread, like the shell in the corresponding internal thread of the support structure is screwed, so that the spring device on the combustion chamber side facing is expandable.
  • the at least one spring is a plate spring. This is advantageous because disc springs can absorb very large forces in comparison with other springs in a small installation space. Furthermore, these can achieve an arbitrarily variable column length by assembling a plurality of disc springs. Achieve correct dimensioning Disc springs with dynamic load also a long service life.
  • the first captive is a pressure plate and / or attached to the inside of the shell edge.
  • the springs in particular the disc springs can rest. Thus, they can not fall into the combustion chamber.
  • the risk of breakage e.g. significantly reduced during disassembly / assembly of a heat shield.
  • the pressure plate is therefore advantageously mounted between the edge and spring in the shell. This also increases the contact surface of the springs. This allows the springs to absorb the load largely constant. This can increase the life of the springs.
  • the pressure plate has an internal thread for fastening the fastening means.
  • This can be advantageously designed as a supporting internal thread, in which the fastening means is attached.
  • the shell has recesses on the side facing the combustion chamber.
  • the projection of the pressure plate is arranged. This achieves a better connection of the two elements and also secures the pressure plate against misalignment.
  • the shell is a sleeve.
  • This is preferably made of metal or metallic base material or other heat-resistant material.
  • the sleeve is preferably such that it allows low strains due to heat. This is the case, for example, with metal / metallic base material.
  • a locking plate is mounted on the spring.
  • the safety plate can be arranged both in the shell on the spring or outside on the spring.
  • the safety sheet can be designed such that a part of the safety sheet is arranged in and part of the safety sheet outside the casing.
  • the locking plate with the shell is firmly connected by the locking plate on the outside has at least one attachment.
  • This attachment is arranged for example in the recesses of the shell.
  • the safety plate is firmly connected to the shell.
  • the safety plate is arranged dejustierĂȘt.
  • this protects the spring from misalignment. This in turn increases the life of the spring.
  • the locking plate on the inside has at least one structure. This serves for further attachment of the locking plate.
  • At least one tooth is applied to the securing plate on the outer edge on the side facing the combustion chamber. If there are several teeth, these are applied evenly over the entire outer edge.
  • at least one bead is embossed on the securing plate on the outer edge on the side facing the combustion chamber.
  • the disc has at least one inside recess.
  • the structure of the safety plate is arranged.
  • the disc is additionally secured against misalignment.
  • the disc has an external thread.
  • the external thread can be configured as a supporting external thread.
  • the screw-in disc also offers the advantage of saving the reworking on the so-called plate pin to adapt the plate to the support structure by the spring device can be adjusted individually in height.
  • the fastening means is a screw.
  • the spring device for fixing a heat shield in the support structure is arranged.
  • a corresponding recess with a corresponding internal thread is to be mounted in the support structure.
  • the pressure plate has at least one projection. With this a better attachment of the pressure plate in the envelope is possible.
  • FIG. 1 shows a disc spring package 5 according to the prior art. This has on the inside in the middle of an axial hole 11 which can receive a screw 10. At the screw head of the heat shield to be attached (not shown) is arranged.
  • the cup spring package 5 has a sleeve 2 with an external thread 14. This sleeve is screwed into the support structure 18 with the corresponding internal thread.
  • a pressure plate 6 and one or more disc springs 4 are attached in the sleeve 2.
  • the pressure plate 6 has an internal thread 16 into which the thread 12 of the screw 10 can be screwed. So that they do not fall into the support structure 18, a releasable safety ring 8 is attached to the side facing away from the combustion chamber 15 side.
  • a closure lid 9 is also firmly attached to the sleeve 2 with the axial hole 11.
  • the closure lid 9 is a part of the sleeve 2 itself.
  • the cup spring package 5 can not open to the combustion chamber 15 out.
  • the plate spring package 5 In a breakage of the safety ring 8 in, for example, the disassembly / assembly of a heat shield to be replaced therefore the plate spring package 5 must be dismantled from the support structure side 18, which, however, requires a lot of time. Otherwise you can Safety ring 8, plate spring 4 or parts of the sleeve 2 fall into the combustion chamber. Since these cause great damage in the combustion chamber 15, they must be consuming sought and removed.
  • FIG. 2 and 3 show a spring device according to the invention.
  • the here essentially round spring device designed here with plate spring 24 as a spring, to the interior of the combustion chamber 15 can be removed.
  • the spring device preferably has an axial hole 34 in the center on the inside.
  • the spring device consists of a shell designed as a sleeve 20. This has an external thread 32 which is screwed into the corresponding internal thread of the support structure 18. Furthermore, the sleeve 20 on the side facing the combustion chamber 15 has recesses 40 and on the side facing away from the combustion chamber 15 an edge 33. In this sleeve now a round pressure plate 22 is inserted, in such a way that they on the edge 33 of the sleeve 20th rests. The pressure plate 22 has on the outside two but at least one projection 42. These projections 42 are inserted into the recess 40 of the sleeve 20. This achieves a better durability of the pressure plate 22 on the other hand a security against rotation of the pressure plate 22.
  • an internal thread 27 is installed, which is designed here as a supporting internal thread 27.
  • the fastener is attached to the support structure 18.
  • the heat shield is mounted (not shown).
  • the spring On the pressure plate 22 in the sleeve 20 is now the spring, here the plate spring 24 or disc springs 24 are arranged.
  • a safety plate 26 On the disc springs 24, a safety plate 26 is now arranged. In this case, the safety plate 26 can still be arranged in the sleeve 20 or even outside the sleeve 20. This has an attachment 44 on the outer edge. This Attachment 44 is inserted into the recess 40 of the sleeve 20.
  • this article 44 provides better cohesion of the two components safety plate 26 and disc springs 24.
  • a disc 28 is arranged on the safety plate 26 . This has on the inside recesses 48, in which the structure 46 of the safety plate 26 is inserted. This also serves as a security against rotation or misalignment and also calls for better cohesion of the components disc 28 and safety plate 26.
  • the disc 28 has a supporting external thread 30. The external thread is, as already the sleeve 20 screwed into the corresponding internal thread of the support structure 18. For better screwing and unscrewing the disc may be provided with a slot 50.
  • the unscrewable disc 28 has the advantage of saving the reworking on the so-called plate pin for adaptation of the heat shield to the support structure 18 by the spring device can be adjusted individually in height.
  • the expandability is achieved by the shell, which is designed here as a sleeve 20, is now expandable combustion chamber side.
  • FIG. 4 shows various embodiments of the safety plate 26.
  • this may be, for example, a locking plate 26 with teeth 72 or a locking plate 26 with embossed bead 70.
  • a rattle prevents the plate springs 24 and the spring device in the thread. As a result, wear in the thread is prevented by relative movements.
  • the required serviceability is essentially achieved according to the invention by the interchangeability of the combustion chamber side. It is thus compensated for the disadvantage that the disc spring package shown in the prior art on the side facing the combustion chamber is not removable or mountable. Thus, it is avoided that in case of breakage of a heat shield and its de / mounting disc springs and / or the pressure plate fall into the combustion chamber. The spring device can now be exchanged directly with the replacement of the heat shield.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ceramic Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Die Erfindung betrifft eine Brennkammerwand mit einer Brennkammer umfassend eine Tragstruktur mit einer Anzahl von Hitzeschilden, welche mit einem Befestigungsmittel an der Tragstruktur befestigt sind, wobei das Befestigungsmittel eine Federvorrichtung umfasst.The invention relates to a combustion chamber wall with a combustion chamber comprising a support structure with a number of heat shields, which are fastened to the support structure with a fastening means, wherein the fastening means comprises a spring device.

Die Brennkammer einer Gasturbine ist besonderen Belastungen zum Beispiel Heißgasen oder Vibrationen ausgesetzt. HierfĂŒr werden an die Tragstruktur so genannte Hitzeschilde montiert, die die Tragstruktur vor den Heißgasen und anderen Belastungen schĂŒtzt.The combustion chamber of a gas turbine is exposed to special loads, for example hot gases or vibrations. For this purpose, so-called heat shields are mounted on the support structure, which protects the support structure from the hot gases and other loads.

Hitzeschilde in einer Brennkammer insbesondere metallische Hitzeschilde werden mit einer Schraube an der Tragstruktur angebracht. Zur Anbringung werden dafĂŒr so genannte Tellerfederpackete verwendet. Metallische Hitzeschildplatten werden mit den Tellerfederpacketen zentral befestigt. Das Tellerfederpaket besteht aus einer HĂŒlse sowie in der HĂŒlse angeordneten Tellerfedern. Diese weisen innenseitig ein durchgĂ€ngiges Axial-Loch auf. Die Tellerfederpackete weisen an dem Axial-Loch teilweise ein Gewinde auf. Die Schraube wird in dieses Axial-Loch eingeschraubt. An der Außenseite der Tellerfederpackete also an der HĂŒlse ist ein Außengewinde angebracht. Mit diesem wird das Tellerfederpacket in die Tragstruktur eingeschraubt. DafĂŒr ist in der Tragstruktur eine Aussparung mit einem passenden Innengewinde vorgesehen. Der Schraubenkopf ist nun im oder am Hitzeschild angeordnet. Durch Einschraubung der Schraube in die Aussparung wird der Hitzeschild an der Tragstruktur befestigt. Dabei kann die Schraube dergestalt sein, dass sie durch das in der Tragstruktur eingeschraubte Tellerfederpacket hinausragt und so noch weiter in die Aussparung der Tragstruktur hineinreicht.Heat shields in a combustion chamber, in particular metallic heat shields, are attached to the support structure with a screw. For mounting so-called plate spring packs are used. Metallic heat shield plates are fastened centrally with the plate springs. The disc spring assembly consists of a sleeve and arranged in the sleeve disc springs. These have on the inside a continuous axial hole. The plate spring pack have at the axial hole partially on a thread. The screw is screwed into this axial hole. On the outside of the cup spring package so on the sleeve, an external thread is attached. With this the cup spring package is screwed into the support structure. For this purpose, a recess with a matching internal thread is provided in the support structure. The screw head is now arranged in or on the heat shield. By screwing the screw into the recess, the heat shield is attached to the support structure. In this case, the screw may be such that it is screwed through the screwed in the support structure Diaphragm spring packet protrudes and extends even further into the recess of the support structure.

In Richtung Brennkammer weist die HĂŒlse einen fest aufgebrachten Deckel auf, welcher ebenfalls ein Axial-Loch zur Aufnahme der Schraube aufweisen kann. Der Deckel ist sozusagen ein Teil der HĂŒlse. Damit fallen die Tellerfedern nicht in die Brennkammer. Die Tellerfedern des Tellerfederpacketes sind auf der Seite in Richtung Tragstruktur mit einem Sicherungsring gegen Herausfallen gesichert. Zwischen Sicherheitsring und Feder ist des Weiteren noch eine Druckplatte angeordnet. Der Sicherheitsring hat sich jedoch in der Vergangenheit des Öfteren gelöst und oder ist gebrochen. Muss nun ein Hitzeschild zum Beispiel aufgrund von Rissen oder BrĂŒchen demontiert/montiert werden, so können bei gebrochenen Sicherheitsring die Federn sowie die Druckplatte selber in die Brennkammer fallen. Diese mĂŒssen anschließend wieder aufwĂ€ndig gesucht und entfernt werden. Auch ist die Montage neuer Tellerfederpacket schwierig, da die RĂŒckseite der Tragstruktur an einigen Stellen z.B. an der Nabe nicht von außen zugĂ€nglich ist.In the direction of the combustion chamber, the sleeve has a fixed lid, which may also have an axial hole for receiving the screw. The lid is a part of the sleeve, so to speak. Thus, the disc springs do not fall into the combustion chamber. The disc springs of the plate spring package are secured on the side toward the support structure with a retaining ring against falling out. Between safety ring and spring is further arranged a pressure plate. However, the safety ring has often been solved in the past and or is broken. If, for example, a heat shield has to be dismantled / installed due to cracks or fractures, the springs and the pressure plate itself can fall into the combustion chamber if the safety ring is broken. These then have to be effortfully searched for and removed again. Also, the assembly of new plate spring package is difficult because the back of the support structure in some places, for. at the hub is not accessible from the outside.

Eine derartige Vorrichtung ist in EP1533572 beschrieben.Such a device is in EP1533572 described.

Die Aufgabe der Erfindung ist die Angabe einer Brennkammerwand mit einer Tragstruktur und mit Hitzeschilden, die an der Tragstruktur befestigt sind, wobei die Befestigung dieser Hitzeschilder an der Tragstruktur besonderes servicefreundlich und leicht zu montieren/demontieren ist.The object of the invention is to specify a combustion chamber wall with a support structure and with heat shields which are fastened to the support structure, the attachment of these heat shields to the support structure being particularly service-friendly and easy to assemble / disassemble.

Die Aufgabe wird gelöst durch eine erfindungsgemĂ€ĂŸe Brennkammerwand mit einer Brennkammer umfassend einer Tragstruktur mit einer Anzahl von Hitzeschilden, welche mit einem Befestigungsmittel an der Tragstruktur befestigt sind, und wobei das Befestigungsmittel eine Federvorrichtung umfasst, und wobei die Federvorrichtung fest mit der Tragstruktur verbunden ist, wobei die Federvorrichtung zumindest aus einer in einer HĂŒlle angebrachten Feder besteht, wobei die HĂŒlle ein Außengewinde aufweist, wobei die Feder gegen herausfallen an der der Brennkammer abgewandeten Seite durch eine erste Verliersicherung gesichert ist, und wobei die Federvorrichtung innenseitig ein Axial-Loch fĂŒr die Aufnahme des Befestigungsmittels aufweist, und wobei die Feder durch eine zweite Verliersicherung an der der Brennkammer zugewandeten Seite gegen herausfallen gesichert ist, wobei an der der Brennkammer zugewandten Seite auf der Feder ein Sicherungsblech angebracht ist, wobei an der der Brennkammer zugewandeten Seite auf dem Sicherungsblech eine Scheibe angebracht ist, wobei die Scheibe ein tragendes Außengewinde aufweist, wobei das Außengewinde wie schon die HĂŒlle in das korrespondierende InnengehĂ€use der Tragstruktur einschraubbar ist, so dass die Federvorrichtung an der der Brennkammer zugewandeten Seite ausbaubar ist.The object is achieved by a combustion chamber wall according to the invention having a combustion chamber comprising a support structure with a number of heat shields which are fastened to the support structure by a fastening means, and wherein the fastening means comprises a spring device, and wherein the spring device is firmly connected to the support structure, wherein the spring device consists at least of a spring mounted in a shell, wherein the shell has an external thread, wherein the spring is secured against falling out on the side facing away from the combustion chamber by a first captive, and wherein the spring device inside an axial hole for receiving having the fastener, and wherein the spring is secured by a second captive on the side facing the combustion chamber against falling out, wherein on the side facing the combustion chamber on the spring a locking plate is mounted, wherein on the combustion chamber side facing the locking plate a disc is attached, wherein the disc has a supporting external thread, wherein the external thread as well as the shell in the corresponding inner casing of the support structure can be screwed, so that the spring device on the side facing the combustion chamber is removable.

In der Erfindung wurde erkannt, dass die Probleme im Stand der Technik darauf zurĂŒckzufĂŒhren sind, dass das Federpacket im Stand der Technik nicht zum Inneren der Brennkammer hin ausbaubar ist. Bei einem Bruch des Sicherheitsrings des Federpacketes im Stand der Technik (z.B. bei Demontage/Montage eines Hitzeschilds) können daher die Tellerfedern in die Brennkammer hineinfallen, da das Tellerfederpacket nicht ohne weiteres ausgetauscht werden kann. Somit ist bei einer Montage/Demontage eines Hitzeschilds und einem damit verbundenen Bruch des Sicherheitsrings des Federpacketes immer eine aufwĂ€ndige Suche der einzelnen Teile des Paketes erforderlich.In the invention, it has been recognized that the problems in the prior art are due to the fact that the spring package in the prior art is not expandable to the interior of the combustion chamber. In the case of breakage of the safety ring of the spring pack in the prior art (e.g., disassembly / assembly of a heat shield), therefore, the cup springs may fall into the combustion chamber because the cup spring pack can not be easily replaced. Thus, in an assembly / disassembly of a heat shield and an associated breakage of the security ring of the spring package always a costly search of the individual parts of the package is required.

Die erfindungsgemĂ€ĂŸe Federvorrichtung besteht daher nun aus einer Feder z.B. Tellerfeder welche in einer HĂŒlle mit Außengewinde angebracht ist. Die Federvorrichtung weist innenseitig ein Axial-Loch auf. Dieses ist aufgrund gleichmĂ€ĂŸiger Belastungsverteilung zumeist mittig angeordnet und ist fĂŒr die Aufnahme des Befestigungsmittels, beispielsweise einer Schraube, gedacht. Mit dem Befestigungsmittel, beispielsweise der Schraube wird das Hitzeschild an der Tragstruktur befestigt, beispielsweise in dem der Schaubenkopf in oder auf dem Hitzeschild angebracht ist. Die Federvorrichtung ist fest mit der Tragstruktur verbunden. In der erfindungsgemĂ€ĂŸen Vorrichtung ist nun eine erste Verliersicherung angebracht, welche die Feder in der HĂŒlle gegen herausfallen in Richtung der Tragstruktur sichert. Dies kann beispielsweise eine Art Deckel sein. Eine zweite Verliersicherung sichert die Feder gegen Herausfallen in Richtung Brennkammer. Diese ist nun derart ausgestaltet, dass sie in Richtung Brennkammer ausgebaut werden kann. Dazu ist an der der Brennkammer zugewandten Seite auf der Feder ein Sicherungsblech angebracht sowie eine Scheibe, welche ein Außengewinde aufweist, wobei das Außengewinde, wie schon die HĂŒlle in das korrespondierende Innengewinde der Tragstruktur einschraubbar ist, so dass die Federvorrichtung an der der Brennkammer zugewandten Seite ausbaubar ist. Bei der Demontage bzw. Montage der Hitzeschilde können damit schadhafte Federvorrichtungen gleich ohne wesentlich weiteren Aufwand mit ausgetauscht werden. Damit reduziert sich zum einen die Gefahr, dass bei SchĂ€den an der Federvorrichtung die Feder oder Teile der Federvorrichtung selber in die Brennkammer fallen und aufwendig entfernt werden mĂŒssen. Auch fĂŒr die Brennkammer selber reduziert sich die Gefahr vor unbefestigten Teilen in der Kammer.The spring device according to the invention therefore consists of a spring, for example disc spring which is mounted in a shell with external thread. The spring device has an axial hole on the inside. This is due to uniform load distribution mostly centered and is for the Recording the fastener, such as a screw, thought. With the fastening means, such as the screw, the heat shield is attached to the support structure, for example, in which the Schaub head is mounted in or on the heat shield. The spring device is firmly connected to the support structure. In the device according to the invention, a first captive securing device is now attached, which secures the spring in the sheath against falling out in the direction of the supporting structure. This can for example be a kind of cover. A second captive secures the spring against falling out in the direction of the combustion chamber. This is now designed such that it can be expanded in the direction of the combustion chamber. For this purpose, a locking plate is attached to the side facing the combustion chamber on the spring and a disc which has an external thread, wherein the external thread, like the shell in the corresponding internal thread of the support structure is screwed, so that the spring device on the combustion chamber side facing is expandable. When disassembling or mounting the heat shields so damaged spring devices can be replaced with equal without much further effort with. This reduces on the one hand the risk that in case of damage to the spring device, the spring or parts of the spring device itself fall into the combustion chamber and must be removed consuming. Also for the combustion chamber itself reduces the risk of unsecured parts in the chamber.

In bevorzugter Ausgestaltung ist die zumindest eine Feder eine Tellerfeder. Dies ist vorteilhaft, da Tellerfedern im Vergleich zu anderen Federn bei einem kleinen Einbauraum sehr große KrĂ€fte aufnehmen können. Weiterhin können diese durch den Zusammenbau mehrerer Tellerfedern eine beliebig variierbare SĂ€ulenlĂ€nge erzielen. Bei richtiger Dimensionierung erzielen Tellerfedern bei dynamischer Belastung zudem eine hohe Lebensdauer.In a preferred embodiment, the at least one spring is a plate spring. This is advantageous because disc springs can absorb very large forces in comparison with other springs in a small installation space. Furthermore, these can achieve an arbitrarily variable column length by assembling a plurality of disc springs. Achieve correct dimensioning Disc springs with dynamic load also a long service life.

Vorteilhafterweise ist die erste Verliersicherung eine Druckplatte oder/und eine an der Innenseite der HĂŒlle angebrachte Kante. Hier können die Federn insbesondere die Tellerfedern aufliegen. Somit können diese nicht in die Brennkammer hineinfallen. Auch ist- im Gegensatz zu dem Sicherheitsring im Stand der Technik, die Gefahr bei einem Bruch z.B. bei Demontage/Montage eines Hitzeschilds erheblich verringert.Advantageously, the first captive is a pressure plate and / or attached to the inside of the shell edge. Here, the springs in particular the disc springs can rest. Thus, they can not fall into the combustion chamber. Also, in contrast to the safety ring in the prior art, the risk of breakage, e.g. significantly reduced during disassembly / assembly of a heat shield.

Die Druckplatte ist daher vorteilhafterweise zwischen Kante und Feder in der HĂŒlle angebracht. Dies erhöht zudem die AuflageflĂ€che der Federn. Dadurch können die Federn die Belastung weitgehend konstant aufnehmen. Dadurch kann sich die Lebensdauer der Federn erhöhen.The pressure plate is therefore advantageously mounted between the edge and spring in the shell. This also increases the contact surface of the springs. This allows the springs to absorb the load largely constant. This can increase the life of the springs.

In bevorzugter Ausgestaltung weist die Druckplatte ein Innengewinde zur Befestigung des Befestigungsmittels auf. Diese kann vorteilhafterweise als tragendes Innengewinde ausgestaltet sein, in welchem das Befestigungsmittel angebracht wird.In a preferred embodiment, the pressure plate has an internal thread for fastening the fastening means. This can be advantageously designed as a supporting internal thread, in which the fastening means is attached.

Bevorzugt weist die HĂŒlle an der der Brennkammer zugewandeten Seite Aussparungen auf. In diese Aussparungen wird vorteilhafterweise der Vorsprung der Druckplatte angeordnet. Dies erzielt eine bessere Verbindung der beiden Elemente und sichert die Druckplatte außerdem vor Dejustage.Preferably, the shell has recesses on the side facing the combustion chamber. In these recesses advantageously the projection of the pressure plate is arranged. This achieves a better connection of the two elements and also secures the pressure plate against misalignment.

Vorteilhafterweise ist die HĂŒlle eine HĂŒlse. Diese ist bevorzugt aus Metall oder aus metallischem Grundmaterial oder anderem hitzebestĂ€ndigem Material. Weiterhin ist die HĂŒlse bevorzugt dergestalt, dass sie geringe Dehnungen aufgrund von Hitzeeinwirkung zulĂ€sst. Dies ist beispielsweise bei Metall/ metallischem Grundmaterial der Fall.Advantageously, the shell is a sleeve. This is preferably made of metal or metallic base material or other heat-resistant material. Furthermore, the sleeve is preferably such that it allows low strains due to heat. This is the case, for example, with metal / metallic base material.

An der der Brennkammer zugewandeten Seite ist auf der Feder ein Sicherungsblech angebracht. Dabei kann das Sicherheitsblech sowohl in der HĂŒlle auf der Feder oder aber auch außerhalb auf der Feder angeordnet sein. Auch kann bei entsprechender Dicke das Sicherheitsblech derart ausgestaltet sein, dass ein Teil des Sicherheitsblechs in und ein Teil des Sicherheitsblechs außerhalb der HĂŒlle angeordnet ist.On the side facing the combustion chamber, a locking plate is mounted on the spring. In this case, the safety plate can be arranged both in the shell on the spring or outside on the spring. Also, with a corresponding thickness, the safety sheet can be designed such that a part of the safety sheet is arranged in and part of the safety sheet outside the casing.

Vorteilhafterweise ist das Sicherungsblech mit der HĂŒlle fest verbunden, indem das Sicherungsblech außenseitig zumindest einen Aufsatz aufweist. Dieser Aufsatz wird beispielsweise in die Aussparungen der HĂŒlle angeordnet. So kann einerseits erreicht werden, dass das Sicherheitsblech mit der HĂŒlle fest verbunden ist. Andererseits ist damit das Sicherheitsblech dejustiersicher angeordnet. Zudem wird dadurch die Feder vor Dejustage geschĂŒtzt. Dies erhöht wiederum die Lebensdauer der Feder.Advantageously, the locking plate with the shell is firmly connected by the locking plate on the outside has at least one attachment. This attachment is arranged for example in the recesses of the shell. Thus, on the one hand can be achieved that the safety plate is firmly connected to the shell. On the other hand, so that the safety plate is arranged dejustiersicher. In addition, this protects the spring from misalignment. This in turn increases the life of the spring.

In vorteilhafter Ausgestaltung weist das Sicherungsblech innenseitig zumindest einen Aufbau auf. Dieses dient zur weiteren Befestigung des Sicherungsblechs.In an advantageous embodiment, the locking plate on the inside has at least one structure. This serves for further attachment of the locking plate.

Bevorzugt ist auf dem Sicherungsblech am Außenrand an der der Brennkammer zugewandeten Seite zumindest ein Zahn aufgebracht. Sind mehrere ZĂ€hne vorhanden, so werden diese gleichmĂ€ĂŸig ĂŒber den gesamten Außenrand angebracht. In bevorzugter Ausgestaltung ist auf dem Sicherungsblech am Außenrand an der der Brennkammer zugewandeten Seite zumindest eine Sicke geprĂ€gt. Durch den zumindest einen Zahn bzw. die ZĂ€hne und die zumindest eine geprĂ€gte Sicke wird ein Klappern der Federvorrichtung bzw. der Feder verhindert, um Verschleiß durch Relativbewegungen zu verhindern. Dadurch wird die Lebensdauer der Federvorrichtung erhöht.Preferably, at least one tooth is applied to the securing plate on the outer edge on the side facing the combustion chamber. If there are several teeth, these are applied evenly over the entire outer edge. In a preferred embodiment, at least one bead is embossed on the securing plate on the outer edge on the side facing the combustion chamber. By the at least one tooth or teeth and the at least one embossed bead a rattling of the spring device or the spring is prevented to prevent wear by relative movements. This increases the life of the spring device.

Vorteilhafterweise weist die Scheibe zumindest eine innenseitige Aussparung auf. In diese Aussparung wird beispielsweise der Aufbau des Sicherheitsblechs angeordnet. Damit wird ein besserer Zusammenhalt dieser beiden Elemente erreicht. Zudem wird so zusĂ€tzlich die Scheibe gegen Dejustage gesichert. Die Scheibe weist ein Außengewinde auf. Dabei kann das Außengewinde als tragendes Außengewinde ausgestaltet sein. Die einschraubbare Scheibe bietet zudem den Vorteil die Nacharbeit am so genannten Plattenzapfen zur Anpassung der Platte an der Tragstruktur einzusparen, indem die Federvorrichtung individuell in der Höhe verstellt werden kann.Advantageously, the disc has at least one inside recess. In this recess, for example, the structure of the safety plate is arranged. This achieves a better cohesion of these two elements. In addition, the disc is additionally secured against misalignment. The disc has an external thread. In this case, the external thread can be configured as a supporting external thread. The screw-in disc also offers the advantage of saving the reworking on the so-called plate pin to adapt the plate to the support structure by the spring device can be adjusted individually in height.

Bevorzugt ist das Befestigungsmittel eine Schraube. Diese bietet den Vorteil dass der Schraubenkopf sehr einfach am oder im Hitzeschild angeordnet werden kann. Durch die Verbindung der Schraube mit dem Hitzeschild sowie der Federvorrichtung welche beispielsweise in der Tragstruktur angebracht ist, ist eine einfache Befestigung des Hitzeschilds an der Tragstruktur möglich.Preferably, the fastening means is a screw. This offers the advantage that the screw head can be easily arranged on or in the heat shield. By connecting the screw with the heat shield and the spring device which is mounted, for example, in the support structure, a simple attachment of the heat shield to the support structure is possible.

Bevorzugt ist die Federvorrichtung zur Befestigung eines Hitzeschilds in der Tragstruktur angeordnet. DafĂŒr ist in der Tragstruktur eine entsprechende Aussparung mit einem korrespondierenden Innengewinde anzubringen. Diese Art der Befestigung bietet den Vorteil, dass diese in Bezug auf die Fertigung einfach und kostengĂŒnstig zu realisieren ist.Preferably, the spring device for fixing a heat shield in the support structure is arranged. For this purpose, a corresponding recess with a corresponding internal thread is to be mounted in the support structure. This type of attachment has the advantage that it is easy and inexpensive to implement in terms of manufacturing.

Bevorzugt weist die Druckplatte zumindest einen Vorsprung auf. Mit diesem ist eine bessere Befestigung der Druckplatte in der HĂŒlle möglich.Preferably, the pressure plate has at least one projection. With this a better attachment of the pressure plate in the envelope is possible.

Weitere Merkmale, Eigenschaften und Vorteile der Erfindung ergeben sich aus der Beschreibung eines AusfĂŒhrungsbeispiels und aus den weiteren abhĂ€ngigen AnsprĂŒchen.Further features, properties and advantages of the invention will become apparent from the description of an embodiment and from the further dependent claims.

Im Folgenden wird die Erfindung beispielhaft anhand einer Zeichnung nÀher erlÀutert.In the following the invention will be explained by way of example with reference to a drawing.

Darin zeigt in vereinfachter und nicht maßstĂ€blicher Darstellung:

FIG 1
ein Tellerfederpacket nach dem Stand der Technik,
FIG 2
eine in der Tragstruktur eingebaute Federvorrichtung gemĂ€ĂŸ der Erfindung,
FIG 3
eine Federvorrichtung gemĂ€ĂŸ der Erfindung,
FIG 4
zwei Sicherheitsbleche gemĂ€ĂŸ der Erfindung.
It shows in a simplified and not to scale representation:
FIG. 1
a disc spring package according to the prior art,
FIG. 2
a built in the support structure spring device according to the invention,
FIG. 3
a spring device according to the invention,
FIG. 4
two safety sheets according to the invention.

Gleiche Teile sind in allen Figuren mit denselben Bezugszeichen versehen.Identical parts are provided with the same reference numerals in all figures.

FIG 1 zeigt ein Tellerfederpacket 5 nach dem Stand der Technik. Dieses weist innenseitig in der Mitte ein Axial-Loch 11 auf, welches eine Schraube 10 aufnehmen kann. Am Schraubenkopf ist der anzubringenden Hitzeschild (nicht gezeigt) angeordnet. Das Tellerfederpacket 5 weist eine HĂŒlse 2 mit einem Außengewinde 14 auf. Diese HĂŒlse ist in die Tragstruktur 18 mit dem entsprechenden Innengewinde geschraubt. In der HĂŒlse 2 sind eine Druckplatte 6 sowie ein oder mehrere Tellerfedern 4 angebracht. Die Druckplatte 6 weist ein Innengewinde 16 auf, in welches das Gewinde 12 der Schraube 10 eingeschraubt werden kann. Damit diese nicht in die Tragstruktur 18 fallen, ist an der der Brennkammer 15 abgewandte Seite ein lösbarer Sicherheitsring 8 angebracht. Damit die Tellerfedern 4 bei De/Montage des Hitzeschilds nicht in die Brennkammer fallen, ist auf der HĂŒlse 2 ein Verschlussdeckel 9 ebenfalls mit dem Axial-Loch 11 fest angebracht. Dabei ist der Verschlussdeckel 9 ein Bestandteil der HĂŒlse 2 selber. Somit lĂ€sst sich das Tellerfederpacket 5 nicht zur Brennkammer 15 hin öffnen. Bei einem Bruch des Sicherheitsrings 8 bei beispielsweise der De/Montage eines auszutauschenden Hitzeschilds muss daher von der Tragstrukturseite 18 das Tellerfederpacket 5 demontiert werden, was jedoch viel Zeit erfordert. Anderenfalls können Sicherheitsring 8, Tellerfeder 4 oder Teile der HĂŒlse 2 in die Brennkammer fallen. Da diese großen Schaden in der Brennkammer 15 anrichten, mĂŒssen sie aufwĂ€ndig gesucht und entfernt werden. FIG. 1 shows a disc spring package 5 according to the prior art. This has on the inside in the middle of an axial hole 11 which can receive a screw 10. At the screw head of the heat shield to be attached (not shown) is arranged. The cup spring package 5 has a sleeve 2 with an external thread 14. This sleeve is screwed into the support structure 18 with the corresponding internal thread. In the sleeve 2, a pressure plate 6 and one or more disc springs 4 are attached. The pressure plate 6 has an internal thread 16 into which the thread 12 of the screw 10 can be screwed. So that they do not fall into the support structure 18, a releasable safety ring 8 is attached to the side facing away from the combustion chamber 15 side. So that the disc springs 4 do not fall into the combustion chamber during de / mounting of the heat shield, a closure lid 9 is also firmly attached to the sleeve 2 with the axial hole 11. In this case, the closure lid 9 is a part of the sleeve 2 itself. Thus, the cup spring package 5 can not open to the combustion chamber 15 out. In a breakage of the safety ring 8 in, for example, the disassembly / assembly of a heat shield to be replaced therefore the plate spring package 5 must be dismantled from the support structure side 18, which, however, requires a lot of time. Otherwise you can Safety ring 8, plate spring 4 or parts of the sleeve 2 fall into the combustion chamber. Since these cause great damage in the combustion chamber 15, they must be consuming sought and removed.

FIG 2 und 3 zeigen eine Federvorrichtung gemĂ€ĂŸ der Erfindung. FIG. 2 and 3 show a spring device according to the invention.

Die hier im Wesentlichen runde Federvorrichtung, hier mit Tellerfeder 24 als Feder ausgefĂŒhrt, ist zum Inneren der Brennkammer 15 ausbaubar. Die Federvorrichtung weist innenseitig bevorzugt mittig ein Axial-Loch 34 auf.The here essentially round spring device, designed here with plate spring 24 as a spring, to the interior of the combustion chamber 15 can be removed. The spring device preferably has an axial hole 34 in the center on the inside.

Die Federvorrichtung besteht aus einer als HĂŒlle ausgebildete HĂŒlse 20. Diese hat ein Außengewinde 32 welches in das korrespondierende Innengewinde der Tragstruktur 18 eingeschraubt wird. Weiterhin hat die HĂŒlse 20 an der der Brennkammer 15 zugewandeten Seite Aussparungen 40 sowie an der der Brennkammer 15 abgewandeten Seite eine Kante 33. In diese HĂŒlse wird nun eine runde Druckplatte 22 eingelegt, und zwar so, dass sie auf der Kante 33 der HĂŒlse 20 aufliegt. Die Druckplatte 22 weist nach außen zwei mindestens jedoch einen Vorsprung 42 auf. Diese VorsprĂŒnge 42 werden in die Aussparung 40 der HĂŒlse 20 eingesteckt. Dies erzielt zum einen eine bessere Haltbarkeit der Druckplatte 22 zum anderen eine Sicherheit gegen verdrehen der Druckplatte 22. In die Druckplatte ist ein Innengewinde 27 eingebaut, welches hier als tragendes Innengewinde 27 ausgestaltet ist. Damit wird das Befestigungsmittel an der Tragstruktur 18 befestig. Am anderen Ende des Befestigungsmittels ist der Hitzeschild montiert (nicht gezeigt). Auf die Druckplatte 22 in der HĂŒlse 20 ist nun die Feder, hier die Tellerfeder 24 oder Tellerfedern 24 angeordnet. Auf den Tellerfedern 24 wird nun ein Sicherheitsblech 26 angeordnet. Dabei kann das Sicherheitsblech 26 noch in der HĂŒlse 20 oder aber bereits außerhalb der HĂŒlse 20 angeordnet sein. Dieses weist am Ă€ußeren Rand einen Aufsatz 44 auf. Dieser Aufsatz 44 wird in die Aussparung 40 der HĂŒlse 20 gesteckt. Somit wird zum einen der Gefahr vor Verdrehungen vorgesorgt, zum anderen bietet dieser Aufsatz 44 einen besseren Zusammenhalt der beiden Komponenten Sicherheitsblech 26 und Tellerfedern 24. Zudem weist das Sicherheitsblech 26 auf der Innenseite noch einen Aufbau 46 auf. Auf dem Sicherheitsblech 26 ist eine Scheibe 28 angeordnet. Diese weist auf der Innenseite Aussparungen 48 auf, in welche der Aufbau 46 des Sicherheitsblechs 26 eingefĂŒhrt wird. Dies dient ebenfalls als Verdrehsicherheit bzw. Dejustagesicherheit und fordert zudem den besseren Zusammenhalt der Komponenten Scheibe 28 und Sicherheitsblech 26. Die Scheibe 28 weist ein tragendes Außengewinde 30 auf. Das Außengewinde wird, wie schon die HĂŒlse 20 in das korrespondierende Innengewinde der Tragstruktur 18 eingeschraubt. Zum besseren Auf- und Einschrauben kann die Scheibe mit einem Schlitz 50 versehen sein.The spring device consists of a shell designed as a sleeve 20. This has an external thread 32 which is screwed into the corresponding internal thread of the support structure 18. Furthermore, the sleeve 20 on the side facing the combustion chamber 15 has recesses 40 and on the side facing away from the combustion chamber 15 an edge 33. In this sleeve now a round pressure plate 22 is inserted, in such a way that they on the edge 33 of the sleeve 20th rests. The pressure plate 22 has on the outside two but at least one projection 42. These projections 42 are inserted into the recess 40 of the sleeve 20. This achieves a better durability of the pressure plate 22 on the other hand a security against rotation of the pressure plate 22. In the pressure plate, an internal thread 27 is installed, which is designed here as a supporting internal thread 27. Thus, the fastener is attached to the support structure 18. At the other end of the fastener, the heat shield is mounted (not shown). On the pressure plate 22 in the sleeve 20 is now the spring, here the plate spring 24 or disc springs 24 are arranged. On the disc springs 24, a safety plate 26 is now arranged. In this case, the safety plate 26 can still be arranged in the sleeve 20 or even outside the sleeve 20. This has an attachment 44 on the outer edge. This Attachment 44 is inserted into the recess 40 of the sleeve 20. Thus, on the one hand, the risk of torsions is taken care of, on the other hand, this article 44 provides better cohesion of the two components safety plate 26 and disc springs 24. In addition, the safety plate 26 on the inside nor a structure 46 on. On the safety plate 26, a disc 28 is arranged. This has on the inside recesses 48, in which the structure 46 of the safety plate 26 is inserted. This also serves as a security against rotation or misalignment and also calls for better cohesion of the components disc 28 and safety plate 26. The disc 28 has a supporting external thread 30. The external thread is, as already the sleeve 20 screwed into the corresponding internal thread of the support structure 18. For better screwing and unscrewing the disc may be provided with a slot 50.

Es wird damit eine Art Deckel bestehend aus einer Scheibe 28 mit einem Sicherheitsblech 26 generiert, wobei die Scheibe 28 zum Inneren der Brennkammer ausschraubbar ist. Die ausschraubbare Scheibe 28 bietet den Vorteil die Nachbearbeitung am so genannten Plattenzapfen zur Anpassung des Hitzeschilds an der Tragstruktur 18 einzusparen, indem die Federvorrichtung individuell in der Höhe verstellt werden kann. Die Ausbaubarkeit wird erreicht, indem die HĂŒlle, welche hier als HĂŒlse 20 ausgebildet ist, nun brennkammerseitig ausbaubar ist.It is thus a kind of cover consisting of a disc 28 generated with a safety plate 26, wherein the disc 28 is unscrewed to the interior of the combustion chamber. The unscrewable disc 28 has the advantage of saving the reworking on the so-called plate pin for adaptation of the heat shield to the support structure 18 by the spring device can be adjusted individually in height. The expandability is achieved by the shell, which is designed here as a sleeve 20, is now expandable combustion chamber side.

FIG 4 zeigt verschiedene AusfĂŒhrungsformen des Sicherheitsblechs 26. Zur Sicherung der Schreibe 28 sind hier unterschiedliche Varianten denkbar. So kann dies zum Beispiel ein Sicherungsblech 26 mit ZĂ€hnen 72 sein oder aber ein Sicherungsblech 26 mit geprĂ€gte Sicke 70. Durch die ZĂ€hne 72 im Sicherungsblech 26 bzw. die geprĂ€gte Sicke 70 wird ein Klappern der Tellerfedern 24 sowie der Federvorrichtung im Gewinde verhindert. Dadurch wird Verschleiß im Gewinde durch Relativbewegungen verhindert. FIG. 4 shows various embodiments of the safety plate 26. To secure the write 28 different variants are conceivable here. Thus, this may be, for example, a locking plate 26 with teeth 72 or a locking plate 26 with embossed bead 70. By the teeth 72 in the locking plate 26 and the embossed bead 70 is a rattle prevents the plate springs 24 and the spring device in the thread. As a result, wear in the thread is prevented by relative movements.

Die erforderliche Servicefreundlichkeit wird im Wesentlichen erfindungsgemĂ€ĂŸ durch die Austauschbarkeit zur Brennkammerseite erreicht. Es wird somit der Nachteil kompensiert, dass das im Stand der Technik dargestellte Tellerfederpacket an der der Brennkammer zugewandeten Seite nicht demontierbar bzw. montierbar ist. Somit wird vermieden, dass bei Bruch eines Hitzeschilds und bei dessen De/Montage Tellerfedern und/oder die Druckplatte in die Brennkammer fallen. Die Federvorrichtung kann nun direkt mit dem Austausch des Hitzeschilds ausgetauscht werden.The required serviceability is essentially achieved according to the invention by the interchangeability of the combustion chamber side. It is thus compensated for the disadvantage that the disc spring package shown in the prior art on the side facing the combustion chamber is not removable or mountable. Thus, it is avoided that in case of breakage of a heat shield and its de / mounting disc springs and / or the pressure plate fall into the combustion chamber. The spring device can now be exchanged directly with the replacement of the heat shield.

Claims (16)

  1. Combustion chamber wall with a combustion chamber (15) comprising a support structure (18) with a number of heat shields, which are fastened to the support structure (18) with a fastening means, the fastening means comprising a spring device,
    characterised in that the spring device is connected permanently to the support structure (18), the spring device consisting at least of a spring positioned in a jacket, the jacket having an external thread (32), the spring being secured on the side facing away from the combustion chamber (15) by a first captive securing means to prevent it falling out and the spring device having an axial hole (34) on the inside to accommodate the fastening means, the spring being secured on the side facing the combustion chamber (15) by a second captive securing means to prevent it falling out, a securing sheet (26) being positioned on the spring on the side facing the combustion chamber (15), a disk (28) being positioned on the securing sheet (26) on the side facing the combustion chamber (15), the disk (28) having a supporting external thread (30), the external thread (30), like the sleeve, being able to be screwed into the corresponding internal thread of the support structure (18), it being possible to dismantle the spring device on the side facing the combustion chamber (15).
  2. Combustion chamber wall with a combustion chamber (15) according to claim 1,
    characterised in that the axial hole (34) is continuous.
  3. Combustion chamber wall with a combustion chamber (15) according to one of claims 1-2,
    characterised in that the spring device has a round form.
  4. Combustion chamber wall with a combustion chamber (15) according to one of claims 1-3,
    characterised in that the at least one spring is a cup spring (24).
  5. Combustion chamber wall with a combustion chamber (15) according to one of claims 1-4,
    characterised in that the first captive securing means is a pressure plate (22) and/or an edge (33) positioned on the inside of the jacket.
  6. Combustion chamber wall with a combustion chamber (15) according to claim 5,
    characterised in that the pressure plate (22) is positioned between edge (33) and spring in the jacket.
  7. Combustion chamber wall with a combustion chamber (15) according to one of claims 5-6,
    characterised in that the pressure plate (22) has at least one projection (42).
  8. Combustion chamber wall with a combustion chamber (15) according to one of claims 5-7,
    characterised in that the pressure plate (22) has an internal thread for fastening the fastening means.
  9. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that the jacket has recesses (40) on the side facing the combustion chamber (15).
  10. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that the jacket is a sleeve (20).
  11. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that the securing sheet (26) is connected permanently to the jacket, in that the securing sheet (26) has at least one attachment (44) on the outside.
  12. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that the securing sheet has at least one assembly (46) on the inside.
  13. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that at least one tooth (72) is positioned on the securing sheet (26) on the outer edge on the side facing the combustion chamber (15).
  14. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that at least one bead (70) is impressed on the securing sheet (26) on the outer edge on the side facing the combustion chamber (15).
  15. Combustion chamber wall with a combustion chamber (15) according to one of the preceding claims,
    characterised in that the disk (28) has at least one inside recess (48).
  16. Combustion chamber wall with a combustion chamber according to one of the preceding claims,
    characterised in that the fastening means is a screw (10).
EP06011276.0A 2006-05-31 2006-05-31 Combustion chamber wall Not-in-force EP1862740B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP06011276.0A EP1862740B1 (en) 2006-05-31 2006-05-31 Combustion chamber wall
US12/227,448 US8069670B2 (en) 2006-05-31 2007-02-22 Combustion chamber wall
RU2008152071/06A RU2437034C2 (en) 2006-05-31 2007-02-22 Combustion chamber wall and gas turbine
CN2007800203112A CN101460783B (en) 2006-05-31 2007-02-22 Combustion chamber wall
EP07726475A EP2021695A1 (en) 2006-05-31 2007-02-22 Combustion chamber wall
PCT/EP2007/051717 WO2007137883A1 (en) 2006-05-31 2007-02-22 Combustion chamber wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06011276.0A EP1862740B1 (en) 2006-05-31 2006-05-31 Combustion chamber wall

Publications (2)

Publication Number Publication Date
EP1862740A1 EP1862740A1 (en) 2007-12-05
EP1862740B1 true EP1862740B1 (en) 2015-09-16

Family

ID=37311944

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06011276.0A Not-in-force EP1862740B1 (en) 2006-05-31 2006-05-31 Combustion chamber wall
EP07726475A Withdrawn EP2021695A1 (en) 2006-05-31 2007-02-22 Combustion chamber wall

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07726475A Withdrawn EP2021695A1 (en) 2006-05-31 2007-02-22 Combustion chamber wall

Country Status (5)

Country Link
US (1) US8069670B2 (en)
EP (2) EP1862740B1 (en)
CN (1) CN101460783B (en)
RU (1) RU2437034C2 (en)
WO (1) WO2007137883A1 (en)

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DE102016211613A1 (en) 2016-06-28 2017-12-28 Siemens Aktiengesellschaft Heat shield arrangement of a combustion chamber with disc spring package

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US9322334B2 (en) * 2012-10-23 2016-04-26 General Electric Company Deformable mounting assembly
DE102012022199A1 (en) 2012-11-13 2014-05-28 Rolls-Royce Deutschland Ltd & Co Kg Combustor shingle of a gas turbine
ITUB20155786A1 (en) * 2015-11-23 2017-05-23 Leonardo Mattoni FIXING DEVICE BETWEEN TWO PARTS WITH SPRING DRAFT
CN105605605A (en) * 2016-01-25 2016-05-25 è„żćŒ—ć·„äžšć€§ć­Š Anti-vibration cooling wall of ground gas turbine combustion chamber
US10655853B2 (en) 2016-11-10 2020-05-19 United Technologies Corporation Combustor liner panel with non-linear circumferential edge for a gas turbine engine combustor
US10935236B2 (en) 2016-11-10 2021-03-02 Raytheon Technologies Corporation Non-planar combustor liner panel for a gas turbine engine combustor
US10935235B2 (en) 2016-11-10 2021-03-02 Raytheon Technologies Corporation Non-planar combustor liner panel for a gas turbine engine combustor
EP3410014B1 (en) * 2017-05-31 2021-01-20 Ansaldo Energia S.p.A. Tile holder for a combustor of a gas turbine
US10436236B2 (en) * 2017-10-10 2019-10-08 Velcro BVBA Threaded fastening
DE102018213925A1 (en) * 2018-08-17 2020-02-20 Rolls-Royce Deutschland Ltd & Co Kg Combustion chamber assembly with shingle component and positioning aid

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Publication number Priority date Publication date Assignee Title
DE102016211613A1 (en) 2016-06-28 2017-12-28 Siemens Aktiengesellschaft Heat shield arrangement of a combustion chamber with disc spring package
WO2018001696A1 (en) 2016-06-28 2018-01-04 Siemens Aktiengesellschaft Heat shield assembly of a combustion chamber having a disk spring set
CN109312922A (en) * 2016-06-28 2019-02-05 è„żé—šć­è‚Ąä»œć…Źćž The heat shield assembly with disc spring group of combustion chamber
RU2708760C1 (en) * 2016-06-28 2019-12-11 ĐĄĐžĐŒĐ”ĐœŃ АĐșŃ†ĐžĐ”ĐœĐłĐ”Đ·Đ”Đ»Đ»ŃŒŃˆĐ°Ń„Ń‚ Design of heat shield of combustion chamber with pack of belleville springs
CN109312922B (en) * 2016-06-28 2020-10-02 è„żé—šć­è‚Ąä»œć…Źćž Heat shield assembly for a combustion chamber having a coil spring assembly
US10989412B2 (en) 2016-06-28 2021-04-27 Siemens Energy Global GmbH & Co. KG Heat shield assembly of a combustion chamber having a disk spring set

Also Published As

Publication number Publication date
RU2008152071A (en) 2010-07-10
EP1862740A1 (en) 2007-12-05
US8069670B2 (en) 2011-12-06
RU2437034C2 (en) 2011-12-20
CN101460783B (en) 2012-01-04
EP2021695A1 (en) 2009-02-11
US20090205314A1 (en) 2009-08-20
WO2007137883A1 (en) 2007-12-06
CN101460783A (en) 2009-06-17

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