EP2898269B1 - Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique - Google Patents

Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique Download PDF

Info

Publication number
EP2898269B1
EP2898269B1 EP13762847.5A EP13762847A EP2898269B1 EP 2898269 B1 EP2898269 B1 EP 2898269B1 EP 13762847 A EP13762847 A EP 13762847A EP 2898269 B1 EP2898269 B1 EP 2898269B1
Authority
EP
European Patent Office
Prior art keywords
cooling air
heat shield
support structure
air passage
retaining
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
EP13762847.5A
Other languages
German (de)
English (en)
Other versions
EP2898269A2 (fr
Inventor
Daniel Vogtmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP13762847.5A priority Critical patent/EP2898269B1/fr
Publication of EP2898269A2 publication Critical patent/EP2898269A2/fr
Application granted granted Critical
Publication of EP2898269B1 publication Critical patent/EP2898269B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F23R3/005—Combined with pressure or heat exchangers
    • 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
    • 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
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/007—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
    • 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
    • F23M5/08—Cooling thereof; Tube walls

Definitions

  • the invention relates to a holding element for holding a heat shield brick held on a support structure and to a method for cooling the support structure of a heat shield.
  • the invention also relates to such a heat shield and a combustion chamber lined by the heat shield and a gas turbine.
  • heat shields are used, which must withstand hot gases of 1000 to 1600 degrees Celsius.
  • gas turbines such as those used in power-generating power plants and in aircraft engines, have correspondingly large surfaces to be shielded by heat shields in the interior of the combustion chambers.
  • the heat shield must be composed of a plurality of individual, generally ceramic heat shield bricks, spaced apart from each other with a sufficient gap to a support structure. This gap provides the heat shield elements with sufficient space for thermal expansion.
  • cooling air is injected as a countermeasure through the gaps in the direction of the combustion chamber.
  • a generic heat shield thus comprises a support structure and a number of heat shields, which are releasably secured to the support structure by means of holding elements, each heat shield brick having a support structure facing cold side and the cold side opposite, acted upon by a hot medium hot side.
  • at least one cooling air passage is provided in the support structure.
  • the generic holding element has a fastening portion attachable to the support structure and a holding portion with a holding head, which is designed to engage in an existing on the heat shield stone engaging device.
  • the attachment section When the attachment section is fastened to the support structure and the retaining section engaging the heat shield block, the attachment section has an upper side which faces a cold side of the heat shield block.
  • the EP 1 701 095 A1 discloses an initially mentioned heat shield of a combustion chamber of a gas turbine having a support structure and a number of heat shield bricks arranged detachably on the support structure.
  • the heat shield bricks are arranged across the surface, leaving expansion gaps on the support structure, each heat shield brick having a support structure facing the cold side and the cold side opposite, acted upon by a hot medium hot side.
  • the heat shield bricks are resiliently fastened to the support structure with two metallic holding elements each.
  • each retaining element comprises a holding portion with a gripping portion and a fixing portion.
  • each heat shield brick retaining grooves are introduced on two opposite circumferential sides, so that for holding the heat shield brick, the gripping portions of the holding elements opposite can engage in the retaining grooves.
  • the holding elements which are fastened on the heat shield block in opposite directions are guided with their attachment section in a fastening groove extending below the heat shield block in the support structure.
  • the gripping portions of the metallic stone holder are cooled.
  • openings are made in the stone holder in the region of the holding section and in the retaining bolts of the heat shield bricks, which are aligned with a cooling air hole arranged in the support structure, so that cooling air from the cooling air bore flows in a direct line against a cold side of the gripping section.
  • Another object of the invention is to provide a combustion chamber and a gas turbine, with which a scaling of the support structure of a heat shield covered by the combustion chamber can be particularly effectively avoided.
  • the inventive design of the retaining element allows cooling air in the region of the mounting portion below to supply a heat shield of a heat shield. Because of this cooling air flowing in substantially centrally under the heat shield brick, the support structure can be effectively cooled in the areas which serve to secure the heat shield stones.
  • the resilient retaining elements which are also referred to with stone holders, are mounted substantially centrally below the heat shield bricks. With the invention, this area is effectively cooled, with a direct flow of the heat shield bricks is prevented by means of the inventively designed stone holder. Damage to the heat shield stones is thus safely avoided.
  • the heat shield bricks are generally made of a ceramic material and are in operation on your hot side directly in contact with the hot gases in the combustion chamber.
  • the cooling air passage integrated in the fastening section can be fed with suitable positioning of the stone holder on the support structure by at least one cooling air duct in the support structure. That the cooling air passage corresponds to the cooling air passage is to be understood such that the stone holder can be positioned on the support structure in such a way that cooling air flowing from the cooling air passage at least partially enters the inlet opening of the cooling air passage. In this position, the inlet opening of the cooling air passage and the outlet opening of the cooling air passage can be aligned with each other, for example.
  • the stone holder is only to be positioned at a suitable location on the support structure, whereby a simple installation or removal of the heat shield stones for maintenance purposes is possible.
  • the holding elements may be guided in fastening grooves, wherein the cooling air channels arranged in the supporting structure are arranged in a groove bottom of the fastening groove are arranged.
  • the stone holders can be pushed over the cooling air channels for maintenance purposes.
  • the cooling air passage can be arranged, for example, in the end region of the fastening section facing away from the holding section.
  • the flow direction of the cooling air when leaving an outlet opening of the cooling air passage can be directed by appropriate design of the cooling air passage on a region to be cooled of the support structure.
  • the direction of the total momentum of a cooling air flow leaving an exit opening of the cooling air passage is not directed to the heat shield.
  • the respective outflow direction has a velocity component which runs parallel to the cold side of the heat shield brick and avoids impact cooling of the heat shield brick.
  • the cooling air passage corresponds to a protrusion formed on the upper side of the fastening section.
  • This embodiment of the invention makes it possible to arrange the at least one outlet opening of the cooling air passage laterally in the survey.
  • the attachment portion is thickened in the region of the survey.
  • the cooling air passage can be arranged, for example, within the attachment section.
  • a cooling air hole arranged in the fastening section which comprises at least one outlet opening arranged in a side surface of the elevation.
  • the cooling air bore may, for example, have a T-shaped profile.
  • the attachment portion is stepped in the region of the survey.
  • the cooling air passage may be formed as arranged below the step groove.
  • the groove may have two opposite side surfaces.
  • the groove could also include only one side surface.
  • the cooling air passage thus comprises two outlet openings, which are arranged in a side surface of the fastening portion.
  • the cooling air passage may include further outlet openings arranged in the elevation.
  • the elevation is step-shaped and comprises at least one side surface pointing in the direction of the holding section.
  • at least one outlet opening of the cooling air passage is arranged in this side surface.
  • the flow direction of the cooling air emerging from the cooling air passage can be directed to the side edges of the fastening section.
  • the fastening section comprises an elongate base plate, at one end face of which the holding section adjoins and at the other end face of which the base plate is offset in the direction of heat shield block a blocking plate is arranged.
  • a blocking plate is arranged.
  • a step-shaped elevation is formed in the top of the mounting portion by means of the blocking plate.
  • the cooling air passage is bounded at least by the underside of the blockade plate and the portion of the end face of the base plate running below the blocking plate.
  • This embodiment of the invention has a particularly simple structure.
  • the holding element according to the invention for example, by attaching a blockade plate on the Surface of a conventional mounting portion can be realized.
  • Another object of the invention is to provide an aforementioned heat shield, with which a scaling of the support structure can be particularly effectively avoided due to hot gas intake.
  • At least one holding element encompassed by the heat shield is designed according to one of claims 1 to 6.
  • At least one cooling air channel arranged in the supporting structure corresponds to the retaining element, so that cooling air flowing from the cooling air channel at least on the heat shield stones fixed to the supporting structure enters the inlet opening of the cooling air passage at least partially.
  • That a cooling air channel arranged in the support structure corresponds to the holding element is to be understood such that the holding element with its attachment portion can be positioned on the support structure such that the cooling air flowing out of the cooling air passage at least partially enters the inlet opening of the cooling air passage.
  • the heat shield according to claim 7 is formed or formed at least one combustion chamber according to claim 8. It is also an object of the invention to provide a method for cooling the support structure of a heat shield, with which a scaling of the support structure due to hot gas intake can be particularly effectively avoided.
  • the heat shield used in the method comprises a number of heat shield bricks releasably attachable to the support structure.
  • the heat shield bricks are fastened by means of retaining elements according to claim 1 on the support structure.
  • cooling air is conducted from the supporting structure along at least one upper side and / or side surface of the fastening section along a cooling air passage formed by the fastening section of a retaining element.
  • the cooling air is hereby impressed by means of the cooling air passage a flow direction, which avoids an impact cooling of the heat shield brick.
  • cooling air is impressed on a flow direction is to be understood such that the cooling air exits from one or more outlet openings of the cooling air passage.
  • Each of these cooling air flows at the exit on an optionally pointing in different directions total pulse.
  • an impingement cooling of the heat shield is avoided.
  • Such a total pulse thus always has a velocity component parallel to the cold side of the heat shield brick and is not directed directly to this.
  • the cooling air is directed at exit from the cooling air passage to at least a portion of the support structure to which a mounting portion of a holding element is attached.
  • the cooling air flowing along the cooling air passage is directed to a groove edge of a fastening groove.
  • FIG. 1 shows a schematic sectional view of a gas turbine 1 according to the prior art.
  • the gas turbine 1 has inside a rotatably mounted about a rotation axis 2 rotor 3 with a shaft 4, which is also referred to as a turbine runner.
  • a turbine runner which is also referred to as a turbine runner.
  • the rotor 3 successively follow an intake housing 6, a compressor 8, a combustion system 9 with a number of combustion chambers 10, each comprising a burner assembly 11 and a housing 12, a turbine 14 and an exhaust housing 15.
  • the housing 12 is for protection Hot gases lined with a heat shield (not shown).
  • the combustion system 9 communicates with an annular hot gas duct, for example.
  • a plurality of successively connected turbine stages form the turbine 14.
  • Each turbine stage is formed of blade rings. Viewed in the flow direction of a working medium follows in the hot runner formed by a number 17 vanes row formed from blades 18 row.
  • the guide vanes 17 are fastened to an inner housing of a stator 19, whereas the moving blades 18 of a row are attached to the rotor 3, for example by means of a turbine disk.
  • Coupled to the rotor 3 is, for example, a generator (not shown).
  • FIG. 2 shows a retaining element according to the invention 22 according to a first embodiment in a perspective view.
  • the exemplary embodiment of the retaining element 22 comprises a rectangular, plate-shaped fastening section 23, at one end face of which a retaining section 24 connects at right angles.
  • the holding portion 24 comprises a holding head 25, which is designed to engage in an engagement device (not shown) on a heat shield brick.
  • the attachment portion 23 has an upper side 28. For fixing the holding element 22 to a support structure (not shown), the attachment portion 23 is widened in sections. This broadening the attachment portion 23 is also referred to as shoe 29.
  • the shoe 29 is adjoined by an elevation 30 arranged on the upper side 28 of the fastening section 23, so that the fastening section is thickened in the region of the elevation 30.
  • the term "side surface of the fastening portion 23" also includes the side surface 32.
  • the fastening portion 23 shown comprises a cooling air passage through the thickened region of the fastening portion 23 runs.
  • the cooling air passage 34 thus corresponds to the elevation 30 formed on the upper side of the fastening portion.
  • the cooling air passage 34 comprises an inlet opening 35 and two outlet openings 37 and 38.
  • the outlet openings 37, 38 are arranged in opposite side surfaces 32, 39 of the fastening section.
  • the illustrated cooling air passage 34 is a cooling air bore, which has an outlet opening 38 arranged in the side area 32 of the elevation 30 which points in the direction of the holding section 24.
  • a cooling air flow which enters the cooling air passage 34 through the inlet opening 35, is divided into two streams by the passage of the T-shaped cooling air passage 34 and exits the cooling air passage 34 through the outlet openings 37 and 38.
  • an outflow direction is imparted to the cooling air, which runs parallel to the upper side of the fastening section 23. An impingement cooling of structures arranged above the holding element 22 (not shown) is thereby avoided.
  • FIG. 3 shows a section of a heat shield 42 according to the invention with a support structure 43 and a support member attached to the support member 22, which accordingly Fig.2 is designed.
  • the holding element 22 rests with its attachment section 23 on the support structure 43 and has a holding section 24 for holding a heat shield block (not shown). In this position is the upper side 28 of the attachment portion 23 faces a cold side of a heat shield block held by the holding portion 24 (not shown).
  • the in Fig.2 described cooling air passage 34 shown in a longitudinal section.
  • the inlet opening 35 of the cooling air passage 34 is in alignment with a cooling air duct 45 arranged in the support structure.
  • the fastening section 23 is arranged on the support structure 43 such that the cooling air passage 34 corresponds to a cooling air duct 45 arranged in the support structure 43.
  • two flow paths 47 and 48 are shown by way of example, along which part of the cooling air flowing out of the cooling air duct 45 passes through the cooling air passage 34.
  • the cooling air is impressed by means of the cooling air passage 34, an outflow direction 50 and 51, which comprises a velocity component parallel to the cold side of a heat shield block held by the holding member and avoids impact cooling of the heat shield brick.
  • FIG. 4 shows an inventive retaining element 54 according to a second embodiment.
  • the holding member 54 is different from that in FIG Fig.2
  • the mounting portion 23 in this case comprises an elongated base plate 57, at one end face of the holding portion 24 connects and at the other end face 58 to the base plate 57 in the direction of heat shield stone (not shown) offset a blocking plate 60 is arranged is.
  • a step-shaped elevation 30 is formed in the upper side of the fastening section 23, and the fastening section 23 is steppedly offset.
  • the cooling air passage 55 is delimited by the underside of the blockage plate 60 and the front side 58 of the base plate 57 running below the blocking plate.
  • the cooling air passage 55 thus comprises an outlet opening 62 arranged in the side faces of the fastening section 23 and encircling the end of the fastening section 23.
  • the cooling air is impressed with an outflow direction 59, 61, 63 when passing through the cooling air passage 55, which runs parallel to the cold side of a heat shield block held by the holding section.
  • FIG. 5 shows a section of a heat shield 64 according to the invention with a support structure 43 and a support member fixed to the support member 54, which accordingly Figure 4 is designed.
  • the mounting portion 23 comprising the base plate 57 and the blocking plate 60 is fixed to the support structure 43 such that a cooling air passage 45 communicates with the cooling air passage 55.
  • Cooling air which flows along the exemplified flow paths 65 and 66 from the cooling air duct 45 into the inlet opening 68 of the cooling air passage 55 and out of the outlet opening 62, by means of the cooling air passage 55 an outflow direction 59, 61, 63 impressed.
  • the outflow direction in the illustrated embodiment is parallel to the cold side of a heat shield block held by the holding section 24 (not shown).
  • the illustrated embodiment is particularly well suited for cooling the groove edges of a mounting groove (not shown) in which the retaining element 54 is secured to the support structure.
  • a direction parallel to the cold side of the heat shield brick is synonymous with a direction parallel to the heat shield brick facing surface of the support structure. Surface irregularities of the support structure are not taken into account.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (12)

  1. Elément (22, 54) de retenue pour retenir une brique de bouclier thermique d'une chambre de combustion de turbine à gaz
    à une structure (43) portante, comprenant une partie (23) de fixation, pouvant être fixée à la structure (43) portante dans une rainure de fixation, et au moins une partie (24) de retenue ayant une tête (25) de retenue constituée pour pénétrer dans un dispositif de pénétration de la brique de bouclier thermique, la partie (23) de fixation comprenant une plaque de base oblongue, à un côté frontal duquel est disposée la partie de retenue et à laquelle se raccorde, en opposition, une zone d'extrémités éloignée de la partie de retenue, et une face (28) supérieure de la partie de fixation peut être disposée en étant tournée vers le côté froid de la brique de bouclier thermique,
    caractérisé en ce que
    la partie de fixation a, dans la zone d'extrémité, une surélévation sur la face supérieure, dans lequel dans la zone de surélévation, au moins un passage (34, 55) pour de l'air de refroidissement est prévu dans la partie (23) de fixation, passage qui comprend une ouverture (35, 68) d'entrée et au moins une ouverture (37, 38, 62) de sortie disposée dans une surface (32, 39, 58) latérale et/ou sur la face (28) supérieure de la partie (23) de fixation de manière à pouvoir imprimer, à l'air de refroidissement sortant de l'ouverture de sortie à l'aide du passage (34, 55) pour de l'air de refroidissement, respectivement un sens (50, 51, 59, 61, 63) de sortie qui comprend une composante de vitesse parallèlement au côté froid et empêche un refroidissement par rebondissement de la brique de bouclier thermique retenue par la partie (24) de retenue, et la partie (23) de fixation peut être disposée sur la structure (43) portante de manière à ce que l'ouverture d'entrée du passage (34, 55) pour de l'air de refroidissement soit alignée avec un canal (45) pour de l'air de refroidissement prévu dans le fond de la rainure de fixation.
  2. Elément (22) de retenue suivant la revendication 1,
    caractérisé en ce que
    la partie (23) de fixation est épaissie dans la zone de la surélévation (30).
  3. Elément (54) de retenue suivant la revendication 1 ou 2,
    caractérisé en ce que
    la partie (23) de fixation s'étend de manière décalée en palier dans la zone de la surélévation (30).
  4. Elément (22) de retenue suivant la revendication 2 ou 3,
    caractérisé en ce que
    le passage (34) pour de l'air de refroidissement est un trou pour de l'air de refroidissement, qui est prévu dans la partie (23) de fixation et qui comprend au moins une ouverture (38, 37) de sortie prévue dans une face (32, 39) latérale de la surélévation (30).
  5. Eléments (22, 54) de retenue suivant la revendication 4,
    caractérisé en ce que
    la surélévation (30) est constituée en forme de palier en ayant au moins une surface (32) latérale tournée dans la direction de la partie (24) de retenue, au moins une ouverture (38) de sortie étant prévue dans cette surface (32) latérale.
  6. Eléments (54) de retenue suivant la revendication 4,
    caractérisé en ce que
    la zone d'extrémité est prévue décalée en forme de palier sur la plaque de base, sous la forme d'une plaque de blocage de manière à former, dans la face (28) supérieure de la partie (23) de fixation, une surélévation (30) en forme de palier, au moyen de la plaque (60) de blocage, le passage (55) pour de l'air de refroidissement étant délimité au moins par la face inférieure de la plaque de blocage et par la partie, s'étendant en dessous de la plaque de blocage, du côté (58) frontal de la plaque (57) de base.
  7. Bouclier (42, 64) thermique pour une chambre de combustion (10) d'une turbine (1) à gaz ayant une structure (43) portante et un certain nombre de briques de bouclier thermique qui sont fixées de manière amovible à la structure (43) portante au moyen d'éléments (22, 54) de retenue, chaque brique de bouclier thermique ayant un côté froid tourné vers la structure (43) portante et un côté chaud, opposé au côté froid et pouvant être soumis à un fluide chaud, et chaque élément (22, 24) de retenue a une partie (24) de retenue pour la fixation à une brique de bouclier thermique et une partie (23) de fixation pouvant être fixée à la structure (43) portante dans une rainure de fixation, dans lequel, pour se protéger de gaz chauds, au moins un canal (45) pour de l'air de refroidissement est prévu dans la structure (43) portante,
    caractérisé en ce que
    au moins un élément (22, 54) de retenue est constitué suivant l'une des revendications 1 à 5, et au moins un canal (45) pour de l'air de refroidissement prévu dans la structure (43) portante correspond à l'élément (22, 54) de retenue de manière à ce que, lorsque les briques de bouclier thermique sont fixées à la structure (43) portante, de l'air de refroidissement sortant du canal (45) pour de l'air de refroidissement entre, au moins en partie, dans l'ouverture (35, 68) d'entrée du passage (34, 55) pour de l'air de refroidissement.
  8. Chambre de combustion qui est revêtue d'un bouclier thermique,
    caractérisée en ce que
    le bouclier (42, 64) thermique est constitué suivant la revendication 7.
  9. Turbine (1) à gaz ayant au moins une chambre de combustion (10),
    caractérisée en ce que
    la au moins chambre de combustion (10) est constituée suivant la revendication 8.
  10. Procédé de refroidissement de la structure (43) portante d'un bouclier (42, 64) thermique qui comprend un certain nombre de briques de bouclier thermique pouvant être fixées de manière amovible à la structure portante, les briques de bouclier thermique étant fixées à la structure (43) portante à l'aide d'éléments (22, 54) de retenue, au moins un élément de retenue étant guidé par une partie de fixation dans une rainure de fixation s'étendant dans la structure portante,
    caractérisé en ce que
    l'élément de retenue est constitué suivant l'une des revendications 1 à 6 et est placé dans la rainure de fixation de manière à ce que l'ouverture d'entrée d'un passage pour de l'air de refroidissement prévu dans la partie de fixation et l'ouverture de sortie d'un canal pour de l'air de refroidissement prévu dans le fond de la rainure, soient alignées de sorte que de l'air de refroidissement sortant de l'ouverture de sortie du canal pour de l'air de refroidissement soit conduit, au moins en partie, de la structure (43) portante le long du passage (34, 55) pour de l'air de refroidissement constitué par la partie (23) de fixation de l'élément (22, 54) de retenue, à au moins une face (28) supérieure et/ou une surface (38, 39) latérale de la partie (23) de fixation, et à imprimer ainsi à l'air de refroidissement, au moyen du passage (34, 55) pour de l'air de refroidissement, un sens d'écoulement qui empêche un refroidissement par rebondissement de la brique de bouclier thermique.
  11. Procédé suivant la revendication 10,
    caractérisé en ce que
    l'air de refroidissement est, à la sortie du passage (34, 55) pour de l'air de refroidissement, dirigé sur au moins une zone de la structure (43) portante où est fixée une partie (23) de fixation d'un élément (22, 54) de retenue.
  12. Procédé suivant la revendication 11,
    caractérisé en ce que
    l'air de refroidissement, s'écoulant dans le passage (34, 55) pour de l'air de refroidissement, est dirigé sur un bord d'une rainure de fixation.
EP13762847.5A 2012-09-21 2013-09-17 Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique Not-in-force EP2898269B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13762847.5A EP2898269B1 (fr) 2012-09-21 2013-09-17 Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12185430.1A EP2711633A1 (fr) 2012-09-21 2012-09-21 Elément de retenue pour maintenir un bouclier de protection thermique et procédé de refroidissement de la structure porteuse d'un bouclier thermique
PCT/EP2013/069271 WO2014044673A2 (fr) 2012-09-21 2013-09-17 Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique
EP13762847.5A EP2898269B1 (fr) 2012-09-21 2013-09-17 Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique

Publications (2)

Publication Number Publication Date
EP2898269A2 EP2898269A2 (fr) 2015-07-29
EP2898269B1 true EP2898269B1 (fr) 2016-11-30

Family

ID=46963539

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12185430.1A Withdrawn EP2711633A1 (fr) 2012-09-21 2012-09-21 Elément de retenue pour maintenir un bouclier de protection thermique et procédé de refroidissement de la structure porteuse d'un bouclier thermique
EP13762847.5A Not-in-force EP2898269B1 (fr) 2012-09-21 2013-09-17 Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12185430.1A Withdrawn EP2711633A1 (fr) 2012-09-21 2012-09-21 Elément de retenue pour maintenir un bouclier de protection thermique et procédé de refroidissement de la structure porteuse d'un bouclier thermique

Country Status (6)

Country Link
US (1) US9657948B2 (fr)
EP (2) EP2711633A1 (fr)
KR (1) KR20150058230A (fr)
CN (1) CN104769362B (fr)
RU (1) RU2634992C2 (fr)
WO (1) WO2014044673A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10969103B2 (en) * 2013-08-15 2021-04-06 Raytheon Technologies Corporation Protective panel and frame therefor
DE102014206018A1 (de) * 2014-03-31 2015-10-01 Siemens Aktiengesellschaft Gasturbinenanlage
DE102015206033A1 (de) * 2015-04-02 2016-10-06 Siemens Aktiengesellschaft Steinhalter
CN109724110B (zh) * 2018-12-07 2020-06-30 西安航天动力研究所 一种具有装配补偿功能的助推器安装支撑结构
DE102019200593A1 (de) * 2019-01-17 2020-07-23 Siemens Aktiengesellschaft Brennkammer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820097A (en) * 1988-03-18 1989-04-11 United Technologies Corporation Fastener with airflow opening
DE58908665D1 (de) * 1988-06-13 1995-01-05 Siemens Ag Hitzeschildanordnung mit geringem kühlfluidbedarf.
RU2088836C1 (ru) * 1990-11-29 1997-08-27 Сименс АГ Теплозащитный экран
US5431020A (en) * 1990-11-29 1995-07-11 Siemens Aktiengesellschaft Ceramic heat shield on a load-bearing structure
EP1288601B1 (fr) * 2001-08-28 2006-10-25 Siemens Aktiengesellschaft Brique de protection thermique ainsi que son utilisation dans une chambre de combustion
US6718770B2 (en) * 2002-06-04 2004-04-13 General Electric Company Fuel injector laminated fuel strip
US7441382B2 (en) * 2002-10-18 2008-10-28 Certainteed Corporation Clapboard siding installation clip and method of installing clapboard siding
ITMI20031246A1 (it) * 2003-06-19 2004-12-20 Megadar S R L Sistema di copertura in lamiera per tetti e simili
EP1521018A1 (fr) * 2003-10-02 2005-04-06 ALSTOM Technology Ltd Joint d'étanchéité haute températures
EP1561997A1 (fr) * 2004-01-27 2005-08-10 Siemens Aktiengesellschaft Bouclier thermique
EP1701095B1 (fr) 2005-02-07 2012-01-18 Siemens Aktiengesellschaft Ecran thermique
EP1715248A1 (fr) * 2005-04-19 2006-10-25 Siemens Aktiengesellschaft Élément de fixation et portion correspondante d'un bouclier thermique ainsi que chambre de combustion munie d'un tel bouclier
WO2008017550A1 (fr) * 2006-08-07 2008-02-14 Alstom Technology Ltd Chambre de combustion d'une installation de combustion
EP2270395B1 (fr) * 2009-06-09 2015-01-14 Siemens Aktiengesellschaft Agencement d'élément de bouclier thermique et procédé de montage d'un élément de bouclier thermique

Also Published As

Publication number Publication date
RU2634992C2 (ru) 2017-11-08
WO2014044673A3 (fr) 2014-05-22
CN104769362A (zh) 2015-07-08
WO2014044673A2 (fr) 2014-03-27
US20150247640A1 (en) 2015-09-03
CN104769362B (zh) 2016-10-26
EP2711633A1 (fr) 2014-03-26
US9657948B2 (en) 2017-05-23
EP2898269A2 (fr) 2015-07-29
RU2015114793A (ru) 2016-11-10
KR20150058230A (ko) 2015-05-28

Similar Documents

Publication Publication Date Title
EP2883000B1 (fr) Dispositif destiné à refroidir une structure porteuse d'un bouclier thermique et bouclier thermique
EP2898269B1 (fr) Élément de retenue destiné à maintenir une tuile de protection thermique et procédé de refroidissement de la structure support d'un bouclier thermique
EP2992270B1 (fr) Bouclier thermique
EP3017253B1 (fr) Bouclier thermique céramique pour une chambre de combustion de turbine à gaz, chambre de combustion pour une turbine à gaz et procédé
EP2236928A1 (fr) Elément de bouclier thermique
EP2986916A1 (fr) Carreau en faïence pour bouclier thermique de chambre de combustion
DE3930324A1 (de) Stromlinienfoermige turbinenschaufel
EP2823152A1 (fr) Aube mobile de turbine et section axiale de rotor pour une turbine à gaz
EP2084368B1 (fr) Aube de turbine
DE102009033592A1 (de) Gasturbinenbrennkammer mit Starterfilm zur Kühlung der Brennkammerwand
DE102004003354A1 (de) Turbinen-Laufschaufel und Gasturbine
EP2883003B1 (fr) Bouclier thermique comportant une structure support et procédé de refroidissement de la structure support
WO2015022222A1 (fr) Écran thermique comportant un résonateur de helmholtz
EP3134680B1 (fr) Élément de bouclier thermique pour bouclier thermique d'une chambre de combustion
DE102013209746B4 (de) Turbinenstufe mit einer Ausblasanordnung und Verfahren zum Ausblasen einer Sperrgasströmung
DE102013219187B3 (de) Demontagewerkzeug für ein Hitzeschildelement
WO2005019731A1 (fr) Chambre de combustion, notamment chambre de combustion pour turbine a gaz
EP2860356A1 (fr) Turbomachine
DE102015206033A1 (de) Steinhalter
EP1422479B1 (fr) Chambre pour la combustion d' un mélange combustible fluide
EP2995859A1 (fr) Élément de bouclier thermique pour un bouclier thermique d'une chambre de combustion
EP1820873A1 (fr) Procédé de fabrication des composants de turbine
WO2014173568A1 (fr) Brique d'écran thermique pour un écran thermique d'une chambre de combustion
EP3008293B1 (fr) Moyeu de boîtier intérieur pour une turbine à gaz
EP1635042A1 (fr) Refroidissement par impact d'un élément d'une turbomachine et méthode de fabrication d'une plaque de refroidissement par impact

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150313

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160701

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 850161

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013005589

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170301

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170228

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170228

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013005589

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG, CH

Ref country code: CH

Ref legal event code: PCOW

Free format text: NEW ADDRESS: WERNER-VON-SIEMENS-STRASSE 1, 80333 MUENCHEN (DE)

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170917

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170917

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170930

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170917

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171002

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180926

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20181119

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 850161

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502013005589

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200401

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190917