EP3894749B1 - Chambre de combustion - Google Patents

Chambre de combustion Download PDF

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Publication number
EP3894749B1
EP3894749B1 EP19842583.7A EP19842583A EP3894749B1 EP 3894749 B1 EP3894749 B1 EP 3894749B1 EP 19842583 A EP19842583 A EP 19842583A EP 3894749 B1 EP3894749 B1 EP 3894749B1
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EP
European Patent Office
Prior art keywords
elements
combustion chamber
heat shield
engagement
holding elements
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.)
Active
Application number
EP19842583.7A
Other languages
German (de)
English (en)
Other versions
EP3894749A1 (fr
Inventor
Matthias Gralki
Claus Krusch
Daniel Schmidt
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 Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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Publication of EP3894749A1 publication Critical patent/EP3894749A1/fr
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Publication of EP3894749B1 publication Critical patent/EP3894749B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • 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
    • F23R3/42—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
    • 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
    • F23R2900/00017—Assembling combustion chamber liners or subparts

Definitions

  • the invention relates to a combustion chamber, in particular one of a gas turbine, with a support structure, a plurality of holding elements attached to the support structure and a plurality of heat shield elements which together form a heat shield, each having a hot gas side, a cold gas side and end faces connecting the hot gas side and the cold gas side , wherein the holding elements engage in a form-fitting manner in recesses provided on the heat shield elements.
  • the combustion chambers of gas turbines are provided with a heat shield that protects the housing wall of the combustion chamber from the hot atmosphere in the combustion chamber of the combustion chamber.
  • Heat shields that can withstand hot gases with temperatures of, for example, about 1000 ° C to about 1600 ° C are, for example, from DE 10 2017 206 502 A1 known.
  • Such heat shields are composed of many individual flat heat shield elements. Depending on whether metallic or ceramic heat shield elements are used, one speaks of a metallic heat shield, the so-called “Metallic Heat Shield” MHS, or a ceramic heat shield, the so-called “Ceramic Heat Shield” CHS.
  • the heat shield elements are positioned next to one another, leaving gaps between the end faces of adjacent heat shield elements.
  • holding elements made of metal also known as stone holders. This include a C-shaped basic shape with two C-legs, namely a long fastening leg designed for attachment to the support structure and a short engagement leg designed to engage in an end-side holding recess of the heat shield element, which are connected to one another via a web. The fastening leg rests on the support structure and is screwed to it at the end.
  • the main goal in the further development of modern stationary gas turbines is to increase the conversion efficiency, which depends on the one hand on the hot gas temperature and on the other hand on the cooling air volume flow required to cool the metallic gas turbine components.
  • the higher the hot gas temperature the more efficiently the gas turbine works.
  • the higher the cooling air volume flow to protect the metallic components the lower the efficiency.
  • the aforementioned holding elements require sufficient cooling in order to be able to ensure their long-term function at the prevailing high temperatures.
  • the cooling air volume flow required for this cooling which is passed between the support structure and the heat shield elements and exits into the combustion chamber as sealing air through the gaps between the heat shield elements, must be branched off from the main cooling air volume flow provided by the compressor and is therefore not relevant to the combustion process therefore not available for generating power from the gas turbine.
  • the size of the gap has a strong influence on the required cooling air volume flow. The smaller the gaps, the lower the cooling air volume flow required to achieve the barrier effect.
  • a combustion chamber according to the prior art is from DE 10 2016 214 818 A1 known.
  • the present invention creates a combustion chamber of the type mentioned at the outset, in which the holding elements each have at least two engagement sections designed for positive engagement in the recesses of a heat shield element, which are connected to one another in such a tension-resistant manner that at the temperatures prevailing during combustion chamber operation one Movement apart of the engagement sections is effectively counteracted, with spring elements designed as leaf springs extending between the support structure and the heat shield elements, which bring about a frictional connection between the engagement sections of the holding elements and the heat shield elements, the engagement sections themselves being designed to be tensile-resistant in such a way that they are during combustion chamber operation prevailing temperatures are dimensionally stable under the influence of the spring forces.
  • a significant advantage associated with a combustion chamber constructed according to the invention is that, in particular, the gap size between adjacent heat shield elements can be significantly reduced.
  • this is due to the fact that sufficient space can be left between the support structure and the heat shield elements in such a way that the heat shield elements can expand freely in the radial direction during combustion chamber operation, whereby their expansion in the circumferential direction is reduced.
  • additional movements of the heat shield elements caused by deformation of the holding elements are effectively counteracted thanks to the tension-resistant design of the holding elements.
  • the maximum temperature at which the combustion chamber can be operated can be increased, for example up to 1600°C, resulting in an improvement in performance.
  • the cooling air volume flow can be reduced by up to an estimated 50%, which also improves performance.
  • the maintenance intervals can also be increased by shielding the holding elements.
  • the recesses are preferably formed on the cold sides of the heat shield elements. This has the advantage over recesses arranged on the front side that the engagement sections of the holding elements that engage in the recesses are better thermally shielded and can also be better cooled by the cooling air.
  • the support structure is provided with circumferentially extending receiving grooves for receiving the holding elements, thereby improving the assembly and fastening of the holding elements.
  • Holding elements arranged circumferentially adjacent to one another are advantageously releasably connected to one another via connecting elements.
  • Such connecting elements serve to compensate for tolerances in the circumferential direction.
  • the connecting elements are in particular screwed to the support structure in order to position the holding elements and thus the heat shield elements in the circumferential direction of the combustion chamber.
  • the receiving grooves preferably have a cross section provided with undercuts, with the holding elements and/or the connecting elements being received in a form-fitting manner in the receiving grooves. In this way, the holding elements and thus the heat shield elements are secured in the radial and axial directions of the combustion chamber.
  • the holding elements have a tensile-resistant fastening section facing the support structure and at least two engagement sections projecting from the fastening section, in particular formed in one piece with it, each heat shield element having a number of cold gas-side recesses corresponding at least to the number of engagement sections of a holding element , and where each intervention section engages positively in one of the recesses.
  • the cold gas-side recesses of the heat shield elements are preferably elongated and each define an insertion area and an engagement area adjoining this in the longitudinal direction, the insertion area being designed such that an associated engagement section of a holding element can be inserted radially into it, the engagement area for positive reception of the Engagement section is designed, and the insertion area and the engagement area are designed such that an engagement section inserted radially into the insertion area can be transferred into the engagement area by displacement in the longitudinal direction.
  • the fastening section is preferably designed in the form of an elongated plate, in particular curved like a circular ring segment, the engagement sections being provided in the area of the free ends of the fastening section.
  • the engagement portions advantageously protrude from the attachment portion at an angle other than 90°.
  • the engagement sections can be provided with end regions pointing towards or away from one another.
  • the fastening section is advantageously provided with a recess on its upper side facing the heat shield element, which is designed to accommodate at least one of the spring elements. Accordingly, the at least one spring element can be easily positioned during assembly and then retains its positioning.
  • At least one spring element is guided through a through opening formed on the fastening section, that this is supported in a central area against the supporting structure.
  • the fastening sections of the holding elements and the spring elements are advantageously provided with correspondingly arranged elongated holes through which tie rods can be inserted in order to pull the spring elements in the direction of the fastening sections.
  • tie rods are used to overcome the spring force of the at least one spring element while the holding element and the at least one spring element are mounted on a heat shield element. After assembly, the tie rods are then removed again in order to create the desired frictional connection between the engagement sections of the holding element and the heat shield element.
  • each heat shield element is held on the support structure via two holding elements, in particular exactly two holding elements.
  • the holding elements are advantageously shaped using a casting process or an additive manufacturing process, optionally with subsequent mechanical processing.
  • the holding elements according to the invention are therefore in contrast to the holding elements in the DE 10 2017 206 502 described, not bent from a punched sheet metal.
  • Such holding elements made of sheet metal do not have the tensile rigidity required according to the invention in the circumferential direction and in the radial direction.
  • the Figures 1 to 6 show a combustion chamber 1 according to an embodiment of the present invention, which in the present case is the combustion chamber of a gas turbine.
  • the combustion chamber 1 comprises a support structure 2, a plurality of holding elements 3 fastened to the support structure 2, a plurality of connecting elements 4, which connect holding elements 3 arranged adjacently in the circumferential direction U, a plurality of hot gas side 5, each forming a heat shield Cold gas side 6 and the hot gas side 5 and the cold gas side 6 interconnecting end faces 7 having heat shield elements 8, the holding elements 3 engaging positively in recesses 9 provided on the heat shield elements 8, and extending between the support structure 2 and the heat shield elements 8 and held on the holding elements 3
  • Spring elements 10 which are presently provided in the form of wave-shaped bent leaf springs.
  • the support structure 2 is made of metal and is provided with a plurality of circumferentially extending and mutually parallel receiving grooves 11, which have a cross section provided with undercuts, in the present case one with step-shaped groove walls, which decreases in size from the groove base to the groove opening.
  • the receiving grooves 11 serve to accommodate the holding elements 3 and the connecting elements 4, as will be described in more detail below.
  • only the connecting elements 4 point a cross section corresponding to the cross section of the receiving grooves 11, so that after insertion into one of the receiving grooves 11 they are secured by positive locking in the radial direction R and in the axial direction A. After being inserted into a receiving groove 11, the holding elements 3 are only secured in the axial direction A by positive locking.
  • the holding elements 3 are made in one piece from metal and essentially have a U-shape, which is formed by a fastening section 12 in the form of an elongated plate bent like a circular ring segment and two engagement sections 13 projecting from the end regions of the fastening section 12.
  • the fastening section 12 serves to fasten the holding element 3 in one of the receiving grooves 11 of the support structure 2.
  • the width of the fastening section 12 is adapted to the width of the receiving grooves 11 for this purpose.
  • the side walls of the fastening section 12 are designed in a straight line without projections, so that the fastening section 12 can be inserted radially into one of the receiving grooves 11.
  • the engagement elements 13 are connected to one another via the fastening section 12 in such a tension-resistant manner that, at the temperatures prevailing during combustion chamber operation, any movement of the engagement sections 13 apart is effectively counteracted. Furthermore, the engagement sections 13 themselves are designed to be rigid in such a way that they are dimensionally stable at the temperatures prevailing during combustion chamber operation under the influence of the spring forces of the spring elements 10. These tensile strengths are primarily achieved by suitable dimensioning of the webs defining the fastening section 12 and the engagement sections 13. The engagement sections 13 protrude at an angle ⁇ from the fastening section 12, which is different from 90° and in the present case is approximately 60°, so that the engagement sections 13 are inclined to one another.
  • each holding element 3 comprises in the central region of its fastening section 12 an elongated through opening 14, which extends from the top of the fastening section 12, from which the engagement sections 13 protrude, extends to the opposite bottom.
  • the through opening is divided approximately in the middle in the transverse direction by a separating web 15, which, however, only extends in the upper region of the through opening 14. This divider serves to prevent the items from accidentally falling out Figure 1 shown in the through opening 14 to prevent spring elements 10 inserted.
  • elongated holes 16 extend through the fastening section 12 from the top to the underside, which, when the spring elements 10 are inserted, are aligned with elongated holes 17, which are formed in the area of the free ends of the spring elements 10. These elongated holes 16 and 17 serve to insert a tie rod during assembly, as will be explained in more detail below with reference to Figure 5.
  • the free ends of the fastening section are each designed to receive a connecting element 4.
  • the left free end of the in Figure 1 Fully illustrated fastening section 12 is designed in such a way that it can be inserted in the circumferential direction U to form a positive fit into a first end face of a connecting element 4 and screwed to the support structure 2 in such a way that both the holding element 3 and the corresponding connecting element 4 against movement be secured in the circumferential direction U and the holding element is fixed in the radial direction R, for which purpose a corresponding screw hole 18 is provided.
  • the right free end of the in Figure 1 fully illustrated fastening section 12 is designed such that a second end face of a connecting element 4 can be inserted into it in the circumferential direction U to form a positive fit that fixes the holding element 3 radially.
  • the holding elements 3 are shaped using a casting process, which is followed by mechanical processing. In principle, the casting process can also be replaced by an additive manufacturing process.
  • the heat shield elements 8 are designed here as CHS heat shield elements and have a completely closed hot gas side 5.
  • the recesses 9, into which the engagement sections 13 of the holding elements 3 engage, are provided on the cold gas side 6 of the heat shield elements 8.
  • each heat shield element 8 comprises two elongated recesses 9 which extend parallel to one another and are arranged at a distance from one another which corresponds to the distance between the engagement sections 13 of a holding element 3.
  • Each recess 9 defines an insertion area 19 and an engagement area 20 adjoining this in the longitudinal direction.
  • the insertion area 19 is designed such that an associated engagement section 13 of a holding element 3 can be inserted radially into it.
  • the engagement area 20 is, however, designed to positively accommodate the corresponding engagement section 13, with the insertion area 19 and the engagement area 20 being designed such that an engagement section 13 inserted radially into the insertion area 19 can be transferred into the engagement area 20 by displacement in the longitudinal direction, see in this regard in particular Figure 3 .
  • four indentations 21 are provided on the cold gas side 6, the positions of which are adapted to the positions of the free ends of the spring elements 10 in the assembled state.
  • four recesses 22 are formed at those positions that cover the screw holes 18 of the holding elements 3 in the assembled state, which make it possible to screw and unscrew the fastening screws inserted into the screw holes 18.
  • two holding elements 3 and four spring elements 10 are required.
  • two spring elements 10 are inserted into the through opening 14 of a holding element 4.
  • tie rods 23 are inserted through the elongated holes 16 of the fastening section 12 and the elongated holes 17 of the spring elements 10 and the free ends of the spring elements 10 underneath Using the tie rods 23 pulled towards the fastening section 12, as shown in Figure 5 is shown.
  • the engagement sections of the holding elements 3 prepared in this way are inserted into the insertion areas 19 of the associated recesses 9 of the heat shield elements 8 and then pushed in the longitudinal direction into the insertion areas 19, so that the insertion sections 13 of the holding elements 3 are held in a form-fitting manner in the engagement areas 20 of the recesses 9.
  • the tie rods 23 are released again, whereupon the free ends of the spring elements 10 press against the cold gas side 6 of the heat shield element 8. In this way, in addition to the positive connection, a frictional connection between the holding elements 3 and the heat shield element 8 is achieved.
  • two connecting elements 4 are inserted into adjacent receiving grooves 11 and each positioned at a distance from one another in the circumferential direction U and approximately parallel to one another in the axial direction A.
  • the fastening sections 12 of the holding elements 3 are now inserted radially into the receiving grooves 11.
  • the fastening sections 12 of the holding elements 3 are then brought into engagement with each other with the respective connecting elements 4 by moving the corresponding components in the circumferential direction U, with screw holes 18 of the holding elements 3 being positioned in alignment with threaded holes, not shown, which are provided in the support structure 2.
  • Fastening screws are then inserted into the screw holes 18 of the holding elements 3 and screwed into the threaded holes.
  • the assembly of the next heat shield element 8 can now follow, as shown in the Figures 1 , 2 and 4 is shown.
  • the previously described arrangement is characterized in particular by the fact that the gap width B between adjacently arranged heat shield elements 8 can be chosen to be very small. This is primarily due, on the one hand, to the tensile-resistant design of the holding elements 3 and, on the other hand, to the fact that that the heat shield elements 8 are positioned at a comparatively large distance from the support structure 2, which is why the heat shield elements 8 can easily expand in the radial direction R during combustion chamber operation. Thanks to the small gap width B, only a small sealing air volume flow is required, which is accompanied by a significantly increased efficiency of the gas turbine.
  • the holding elements 3 are completely covered by the heat shield elements 8 and are correspondingly better thermally protected, so that the cooling requirement of the holding elements 3 is also lower. The same applies to the maintenance requirement, since the holding elements 3 wear less.
  • FIGS. 7 and 8 show a combustion chamber 1 according to a further embodiment of the present invention, which differs from the previously described embodiment only with regard to some details regarding the design of the holding elements 3, the connecting elements 4 and the spring elements 10, which is why only these details will be discussed below and the rest the previous statements are referred to.
  • the holding elements 3 each had a fastening section 12 and two engagement sections 13.
  • the fastening section is not provided with a through opening 14, but rather on its top with a recess 24 for receiving the lower two of a total of three spring elements 10.
  • the fastening section 12 comprises outwardly projecting projections 25 in its opposite end regions, the contour of which is selected to correspond to the cross section of the receiving grooves 11, so that these projections 25 engage in a form-fitting manner in the receiving grooves 11.
  • the connecting elements 4 is not the fastening sections 12 of the holding elements 3, but rather the connecting elements 4 is provided with a screw hole 18, so that the holding elements 3 and the connecting elements 4 are now fixed in the circumferential direction U by screwing the connecting elements 4 to the support structure 2.
  • three spring elements 10 are provided, with the orientation of the lower two spring elements 10 being chosen opposite to the previously described orientation, i.e. with the wave crest directed upwards.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Connection Of Plates (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (14)

  1. Chambre (1) de combustion,
    en particulier celle d'une turbine à gaz,
    comprenant une structure (2) de support,
    une pluralité d'éléments (3) de maintien fixés à la structure (2) de support, et
    une pluralité d'éléments (8) de bouclier thermique formant ensemble un bouclier thermique et ayant respectivement un côté (5) de gaz chaud,
    un côté (6) de gaz froid et
    des côtés (7) frontaux reliant entre eux le côté (5) de gaz chaud et le côté (6) de gaz froid,
    dans laquelle les éléments (3) de maintien pénètrent à complémentarité de forme dans des évidements (9) prévus sur les éléments (8) de bouclier thermique,
    dans laquelle les éléments (3) de maintien ont chacun au moins deux parties (13) de pénétration constituées pour la pénétration à complémentarité de forme dans les évidements (9) d'un élément (8) de bouclier thermique,
    qui sont reliés entre eux d'une façon rigide à la traction, de manière à s'opposer, d'une manière efficace aux températures régnant pendant le fonctionnement de la chambre de combustion, à un mouvement de séparation des parties (13) de pénétration et en ce que, entre la structure (2) de support et les éléments (8) de bouclier thermique, s'étendent des éléments (10) de ressort constitués en ressorts à lames, qui provoquent une application de force entre les parties (13) de pénétration des éléments (3) de maintien et les éléments (8) de bouclier thermique,
    dans laquelle les parties (13) de pénétration sont constituées elles-mêmes, d'une façon rigide à la traction, de manière à être de forme stable sous l'effet des forces de ressort aux températures régnant pendant le fonctionnement de la chambre de combustion.
  2. Chambre (1) de combustion suivant la revendication 1,
    caractérisée en ce que
    les évidements (9) sont constitués sur les côtés (6) froids des éléments (8) de bouclier thermique.
  3. Chambre (1) de combustion suivant la revendication 1 ou 2,
    caractérisée en ce que
    la structure (2) de support est pourvue de rainures (11), s'étendant sur le pourtour, de réception des éléments (3) de maintien.
  4. Chambre (1) de combustion suivant l'une des revendications précédentes,
    caractérisée en ce que
    des éléments (3) de maintien voisins les uns des autres sur le pourtour sont reliés entre eux de manière amovible par des éléments (4) de liaison.
  5. Chambre (1) de combustion suivant la revendication 3 ou 4,
    caractérisée en ce que
    les rainures (11) de réception ont une section transversale pourvue de contredépouilles, et en ce que les éléments (3) de maintien et/ou les éléments (4) de liaison sont reçus à complémentarité de forme dans les rainures (11) de réception.
  6. Chambre (1) de combustion suivant l'une des revendications précédentes,
    caractérisée en ce que
    les éléments (3) de maintien ont une partie (12) de fixation tournée vers la structure (2) support et constituée de façon rigide en traction et au moins deux parties (13) de pénétration en saillie de la partie (12) de fixation, en particulier d'une pièce avec celle-ci,
    en ce que chaque élément (8) de bouclier thermique a un nombre d'évidements (9) du côté du gaz froid correspondant au moins au nombre des parties (13) de pénétration d'un élément (3) de maintien, et
    en ce que chaque partie (13) de pénétration pénètre à complémentarité de forme dans l'un des évidements (9).
  7. Chambre (1) de combustion suivant la revendication 6,
    caractérisée en ce que
    les évidements (9) du côté du gaz froid des éléments (8) de bouclier thermique sont de constitution oblongue et définissent chacun une partie (19) d'insertion et une partie (20) de pénétration se raccordant à celle-ci dans la direction longitudinale,
    en ce que la partie (19) d'insertion est constituée de manière à ce qu'une partie (13) de pénétration associée d'un élément (3) de maintien puisse s'y insérer radialement, et en ce que la partie (20) de pénétration est conçue pour la réception à complémentarité de forme de la partie (13) de pénétration, et en ce que la partie (19) d'insertion et la partie (20) de pénétration sont constituées de manière à ce qu'une partie (13) de pénétration, insérée radialement dans la partie (19) d'insertion, puisse passer par décalage dans la direction longitudinale dans la partie (20) de pénétration.
  8. Chambre (1) de combustion suivant la revendication 6 ou 7,
    caractérisée en ce que
    la partie (12) de fixation est constituée sous la forme d'une plaque oblongue incurvée, en particulier en forme de segment d'anneau de cercle, et
    en ce que les parties (13) de pénétration sont prévues dans la partie des extrémités libres de la partie (12) de fixation.
  9. Chambre (1) de combustion suivant la revendication 6 à 8,
    caractérisée en ce que
    les parties (13) de pénétration sont en saillie suivant un angle (α) de la partie (12) de fixation, qui est différent de 90°, et/ou en ce que les parties (13) de pénétration sont pourvues de parties d'extrémité tournées l'une vers l'autre ou s'éloignant l'une de l'autre.
  10. Chambre (1) de combustion suivant l'une des revendications 6 à 9,
    caractérisée en ce que
    la partie (12) de fixation est pourvue sur sa face supérieure, tournée vers l'élément (8) de bouclier thermique, d'une cavité (24), qui est conçue pour la réception d'au moins l'un des éléments (10) de ressort.
  11. Chambre (1) de combustion suivant l'une des revendications 6 à 10,
    caractérisée en ce qu'
    au moins un élément (10) de ressort est traversé par une ouverture (14) de passage constituée pour une partie (12) de fixation, de manière à ce qu'il s'appuie dans une partie médiane sur la structure (2) de support.
  12. Chambre (1) de combustion suivant l'une des revendications 6 à 10,
    caractérisée en ce que
    les parties (12) de fixation des éléments (3) de maintien et les éléments (10) de ressort sont pourvus de boutonnières (16, 17) disposées de manière correspondante, dans lesquelles des tirants (23) peuvent être insérés pour tirer les éléments (10) de ressort dans la direction des parties (12) de fixation.
  13. Chambre (1) de combustion suivant l'une des revendications précédentes,
    caractérisée en ce que
    chaque élément (8) de bouclier thermique est maintenu par deux éléments (3) de maintien sur la structure (2) support,
    en particulier par exactement deux éléments (3) de maintien.
  14. Chambre (1) de combustion suivant l'une des revendications précédentes,
    caractérisée en ce que
    le façonnage des éléments (3) de maintien s'effectue en utilisant une opération de coulée ou un procédé de fabrication additive, éventuellement avec ensuite un usinage mécanique.
EP19842583.7A 2019-01-17 2019-12-16 Chambre de combustion Active EP3894749B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019200593.4A DE102019200593A1 (de) 2019-01-17 2019-01-17 Brennkammer
PCT/EP2019/085232 WO2020148045A1 (fr) 2019-01-17 2019-12-16 Chambre de combustion

Publications (2)

Publication Number Publication Date
EP3894749A1 EP3894749A1 (fr) 2021-10-20
EP3894749B1 true EP3894749B1 (fr) 2023-11-22

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EP19842583.7A Active EP3894749B1 (fr) 2019-01-17 2019-12-16 Chambre de combustion

Country Status (6)

Country Link
US (1) US11821629B2 (fr)
EP (1) EP3894749B1 (fr)
KR (1) KR20210113348A (fr)
CN (1) CN113396304B (fr)
DE (1) DE102019200593A1 (fr)
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CN113396304A (zh) 2021-09-14
WO2020148045A1 (fr) 2020-07-23
US11821629B2 (en) 2023-11-21
DE102019200593A1 (de) 2020-07-23
KR20210113348A (ko) 2021-09-15
CN113396304B (zh) 2022-11-29
US20220099296A1 (en) 2022-03-31
EP3894749A1 (fr) 2021-10-20

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