EP1128131A1 - Bouclier thermique, chambre de combustion et turbine à gaz - Google Patents

Bouclier thermique, chambre de combustion et turbine à gaz Download PDF

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Publication number
EP1128131A1
EP1128131A1 EP00103821A EP00103821A EP1128131A1 EP 1128131 A1 EP1128131 A1 EP 1128131A1 EP 00103821 A EP00103821 A EP 00103821A EP 00103821 A EP00103821 A EP 00103821A EP 1128131 A1 EP1128131 A1 EP 1128131A1
Authority
EP
European Patent Office
Prior art keywords
heat shield
stones
combustion chamber
support
support element
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.)
Withdrawn
Application number
EP00103821A
Other languages
German (de)
English (en)
Inventor
Daniel Dr.-Ing. Hoffmann
Paul-Heinz Dipl.-Ing. Jeppel
Hans Dipl.-Ing. Maghon
Uwe Dr. Ing. Dipl.-Phys. Rettig
Milan Dipl.-Ing. Schmal
Christine Dr. Phys. Taut
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 EP00103821A priority Critical patent/EP1128131A1/fr
Priority to PCT/EP2001/001528 priority patent/WO2001063177A1/fr
Publication of EP1128131A1 publication Critical patent/EP1128131A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a heat shield element, in particular for the inner lining of a combustion chamber.
  • the invention relates also a combustion chamber with a lining made of such Heat shield elements and a gas turbine with such a lined combustion chamber.
  • WO 89/12789 shows a heat shield arrangement with little Cooling fluid requirement.
  • the heat shield arrangement particularly usable in gas turbine plants, consists of individual ceramic Elements that have a hat part and have a shaft part. These are ceramic on the shaft part Elements using a bracket on a support structure attached.
  • the hat parts have the shape of flat or curved Polygons with straight or curved border lines and overlap the supporting structure is complete except for expansion gaps.
  • the Brackets for holding the ceramic element are preferably made made of metal and includes a resiliently deformable Element so that the associated with tensile and bending stresses Forces acting on the heat shield element to be fixed act, are limited and risk of breakage for the ceramics is avoided.
  • the fireproof Lining consists of individual stones that are under Leave cooling fluid gaps with metallic retaining clips are almost completely attached to a support structure.
  • the stones point at least to those of metal clips sides flanked towards the supporting structure on, which at least partially from the also beveled Brackets are covered.
  • the brackets are attached to the supporting structure by a spring element, so that they press the stones against the supporting structure.
  • the hot side that is particularly thermally stressed in this design the retaining clips are placed over cooling fluid openings in the Support structure and a hole in the screw directly and cooled by a cooling film.
  • the lining is special easy to assemble and tends due to the special shape of the Stones hardly cause damage due to thermal alternating loads.
  • a ceramic heat shield for a hot gas leading Structure shows DE 41 14 768.
  • the heat shield in particular designed for a flame tube of a gas turbine from a variety of stones that are essentially nationwide are arranged side by side. Every stone is on a cold side facing a supporting wall from an associated one Clasped bracket. The holder is in turn on the Attached wall. For fastening the stone to the supporting wall no longer need any special clamping forces on the stone be exercised. In particular, have thermal or otherwise Conditional changes in shape of the structure no stress more of the stone. As part of a special Design, the holder on the support wall one above the other linked so that there is an inherent stabilization of the Heat shield results.
  • the invention is based on the observation that the bracket ceramic heat shield stones due to their necessary Flexibility in terms of thermal expansion often not sufficient for dynamic mechanical loads, such as shocks or vibrations.
  • the invention is accordingly the task of a heat shield element specify which both largely free thermal expansion as well the stability against shock-like mechanical loads high operational reliability guaranteed.
  • Another task the invention is the specification of a combustion chamber, with a appropriate lining and specifying a gas turbine with such a combustion chamber.
  • the object directed to a heat shield element is achieved according to the invention solved by specifying a heat shield element with a focus and with at least two ceramic ones Heat shield stones arranged together on a support element are that by attacking in the area of focus Fastening element can be fastened to a supporting structure is.
  • the area of focus is especially that if necessary, about the immediate vicinity of the center of gravity outgoing area of the heat shield element, the represents the shortest path from the center of gravity to the supporting element.
  • the Invention thus takes a completely new path, heat shield stones on a support element to a larger unit summarize to one of such heat shield elements Hot gas duct or another thermally highly stressed wall to undress.
  • the support element is used during installation a fastener connected to the support structure.
  • the support element can be arranged so that that this attacks in the center of gravity of the heat shield element, without reaching through one of the heat shield stones and to tie it rigidly to the supporting structure. With that they are Heat shield stones held dampened against the supporting structure.
  • Another advantage of the heat shield element described is the simplified completion of the entire heat shield element arrangement, because by attaching a single support element already have several shielding heat shield stones on the supporting structure.
  • the heat shield elements are still interchangeable, i.e. a damaged one Heat shield element can be used without detaching the neighboring one Fairing can be replaced.
  • Another advantage the attachment in the center of gravity for several heat shield stones of a heat shield element is that none of the heat shield stones be penetrated by the fastener got to.
  • the fastening of the heat shield element by means of the fastening element the focus is, as stated above, particularly with regard to the dynamic, mechanical stability Cheap.
  • the heat shield element preferably has two, three or four heat shield stones.
  • the support element is preferably in the form of a sheet with one Heat shield stone side and a supporting structure side, where two opposite edge regions of the Support element are bent towards the heat shield stone side.
  • This bent shape of the support element results a resilient effect for the storage of the heat shield the supporting structure.
  • a heat shield element with two rectangular heat shield stones and a rectangular support element a rocker-shaped design of the support element.
  • More preferred there is a central area of the support element between the edge areas, whose area is not larger than a quarter of the total Edge area surfaces. So most of the Support element designed in the form of bent edge areas, which gives a particularly high resilience.
  • More preferred is the fastener in the central area of the Supporting element arranged. The fastener is thus in a flat, unbent area and especially presses the support element in this central area to the support structure on.
  • each heat shield brick at the edge regions are preferred supported.
  • brackets like in DE 41 14 768 each heat shield brick is in the edge areas spaced from the central area.
  • the contact of everyone Heat shield stone leads to the supporting structure exclusively over the bent, resilient edge areas. An immediate transmission of shocks or vibrations is excluded from the supporting structure on the heat shield stones.
  • the object directed to a combustion chamber is achieved according to the invention solved by specifying a combustion chamber with an inner Combustion chamber lining, according to the heat shield elements has the above statements.
  • the one aimed at a gas turbine The object is achieved by a gas turbine with such a combustion chamber.
  • FIG. 1 shows a schematic view of a partially Heat shield element 3.
  • the heat shield element 3 has one first heat shield stone 5 and a second heat shield stone 7 on.
  • the heat shield stones 5, 7 are on a support element 9 arranged. While the heat shield stones 5, 7 from a are made of refractory ceramic, the support member 9 is made of a high-temperature steel shaped like a sheet.
  • the support element 9 is rectangular.
  • the support element 9 has a heat shield stone side 21 and a supporting structure side 23.
  • the heat shield stones 5, 7 are square and side by side on the Carrying element 9 arranged substantially covering this. This has edge regions on the long sides of the support element 9 11, which in the direction of the heat shield stones 5, 7 are bent up. Extends between the edge regions 11 a flat central area 13.
  • the area of the central area 13 is preferably only a quarter or less as large as the added areas of the edge regions 11.
  • the support element 9 is not closer to one with a fastener 15 shown support structure attached (see also Figure 5)
  • Fastening element 15 lies in the area of the center of gravity S of the heat shield element 3, on a projection of the center of gravity S normal to the heat shield element expansion.
  • the fastener 15 is e.g. a screw.
  • the heat shield element becomes through the fastening element 15 3 pressed against the support structure via the central area 13.
  • the bent-up edge regions 11 are, however, not immediate Contact with the supporting structure.
  • bracket elements 17 are the heat shield stones 5, 7 with the support element 9 connected.
  • the heat shield stones 5, 7 are from the central area 13 spaced. This is particularly evident in the Representation in Figure 2.
  • FIG. 2 shows a cross section through the heat shield arrangement 3 of FIG. 1.
  • the edge regions 11 are differentiated into a first edge region 11a, that of a second edge region 11b is opposite.
  • the heat shield element 3 is, as already executed above, with the fastener 15 on one Support structure 12 attached so that the support member 9 with its central area 13, which is flat, to the Carrying structure 12 presses.
  • the bent edge regions 11a, llb are not in direct contact with the supporting structure 12.
  • the heat shield brick 5 is with the mounting elements 17, which engage in transverse side grooves of the heat shield brick 5, connected to the edge regions 11a, 11b. That is why he is spaced from the flat central area 13 only over the bent Edge areas 11 connected to the support structure 12.
  • FIG 3 shows a further heat shield arrangement 3, which now but has four heat shield stones 5, 6, 7, 8. These are each square and on a square base arranged symmetrically to each other.
  • the heat shield stones 5, 6, 7, 8 are arranged together on a support element 9.
  • the central area 13 is circular in this case Fastener 15 arranged around, the fastener 15 again in the area of the focus S of the Support element 9 is arranged.
  • the heat shield stones 5, 6, 7, 8 via mounting elements 17 with the support element 9 connected.
  • a heat shield arrangement equivalent to the above heat shield arrangements 3 with three heat shield stones 5, 6, 7 shows Figure 4. With such a triangular geometry, too geometrically more complex linings from thermally high to realize loaded walls.
  • FIG. 5 schematically shows a gas turbine in a longitudinal section 31.
  • a turbine axis 33 are consecutive arranged: a compressor 35, a combustion chamber 37, a Turbine part 39.
  • the combustion chamber 37 has a combustion chamber lining 41 lined inside.
  • a support structure 12 is formed by the combustion chamber wall.
  • the combustion chamber 41 consists of heat shield elements 3 corresponding to the above Executions.
  • Vibrations come from the buzzing of the combustion chamber. These vibrations lead to considerable stress the brackets of heat chips 5, 7.
  • Due to the damped, resilient bracket by decrouping heat shield stones 5, 7 on one only by a single fastener 17 supported support element 9 results a particularly high insensitivity of the combustion chamber lining 41 against shocks or vibrations.

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)
EP00103821A 2000-02-23 2000-02-23 Bouclier thermique, chambre de combustion et turbine à gaz Withdrawn EP1128131A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00103821A EP1128131A1 (fr) 2000-02-23 2000-02-23 Bouclier thermique, chambre de combustion et turbine à gaz
PCT/EP2001/001528 WO2001063177A1 (fr) 2000-02-23 2001-02-12 Element de protection thermique, chambre de combustion, et turbine a gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00103821A EP1128131A1 (fr) 2000-02-23 2000-02-23 Bouclier thermique, chambre de combustion et turbine à gaz

Publications (1)

Publication Number Publication Date
EP1128131A1 true EP1128131A1 (fr) 2001-08-29

Family

ID=8167945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103821A Withdrawn EP1128131A1 (fr) 2000-02-23 2000-02-23 Bouclier thermique, chambre de combustion et turbine à gaz

Country Status (2)

Country Link
EP (1) EP1128131A1 (fr)
WO (1) WO2001063177A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071320A1 (fr) * 2004-01-27 2005-08-04 Siemens Aktiengesellschaft Ecran thermique
EP1701095A1 (fr) * 2005-02-07 2006-09-13 Siemens Aktiengesellschaft Ecran thermique
EP1715271A1 (fr) * 2005-04-19 2006-10-25 Siemens Aktiengesellschaft Bouclier thermique, chambre de combustion et turbine à gaz
EP1939529A1 (fr) 2006-12-22 2008-07-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Revêtement de chambre de combustion CMC à structure à double couche
DE102013220482B3 (de) * 2013-10-10 2015-04-09 Deutsches Zentrum für Luft- und Raumfahrt e.V. Haltevorrichtung zur wärmeausdehnungskompensierenden, klemmenden Fixierung eines hitzebeständigen Wandelements einer Brennkammer
EP3309456A1 (fr) * 2016-10-13 2018-04-18 Siemens Aktiengesellschaft Écran thermique avec carreau et support

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2531099T3 (es) * 2009-06-09 2015-03-10 Siemens Ag Disposición de elemento de escudo térmico y procedimiento para el montaje de un elemento de escudo térmico

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1021647B (de) * 1954-03-03 1957-12-27 Parsons & Marine Eng Turbine Zylindrischer Heiz- oder Verbrennungsraum, insbesondere fuer Gasturbinen
DE3625056A1 (de) 1986-07-24 1988-01-28 Siemens Ag Feuerfeste auskleidung, insbesondere fuer brennkammern von gasturbinenanlagen
WO1989012789A1 (fr) 1988-06-13 1989-12-28 Siemens Aktiengesellschaft Bouclier thermique n'exigeant que peu de fluide de refroidissement
DE4114768A1 (de) 1990-05-17 1991-11-21 Siemens Ag Keramischer hitzeschild fuer eine heissgasfuehrende struktur
US5431020A (en) * 1990-11-29 1995-07-11 Siemens Aktiengesellschaft Ceramic heat shield on a load-bearing structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1021647B (de) * 1954-03-03 1957-12-27 Parsons & Marine Eng Turbine Zylindrischer Heiz- oder Verbrennungsraum, insbesondere fuer Gasturbinen
DE3625056A1 (de) 1986-07-24 1988-01-28 Siemens Ag Feuerfeste auskleidung, insbesondere fuer brennkammern von gasturbinenanlagen
WO1989012789A1 (fr) 1988-06-13 1989-12-28 Siemens Aktiengesellschaft Bouclier thermique n'exigeant que peu de fluide de refroidissement
DE4114768A1 (de) 1990-05-17 1991-11-21 Siemens Ag Keramischer hitzeschild fuer eine heissgasfuehrende struktur
US5431020A (en) * 1990-11-29 1995-07-11 Siemens Aktiengesellschaft Ceramic heat shield on a load-bearing structure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7677044B2 (en) 2004-01-27 2010-03-16 Siemens Aktiengesellschaft Heat shield
EP1561997A1 (fr) * 2004-01-27 2005-08-10 Siemens Aktiengesellschaft Bouclier thermique
WO2005071320A1 (fr) * 2004-01-27 2005-08-04 Siemens Aktiengesellschaft Ecran thermique
EP1701095A1 (fr) * 2005-02-07 2006-09-13 Siemens Aktiengesellschaft Ecran thermique
US7779637B2 (en) 2005-02-07 2010-08-24 Siemens Aktiengesellschaft Heat shield
CN1818527B (zh) * 2005-02-07 2010-05-26 西门子公司 热屏
EP1715271A1 (fr) * 2005-04-19 2006-10-25 Siemens Aktiengesellschaft Bouclier thermique, chambre de combustion et turbine à gaz
WO2006111519A1 (fr) * 2005-04-19 2006-10-26 Siemens Aktiengesellschaft Element de bouclier thermique pour le revetement d'une paroi de chambre de combustion, chambre de combustion et turbine a gaz
US7942007B2 (en) 2005-04-19 2011-05-17 Siemens Aktiengesellschaft Heat shield element for lining a combustion chamber wall, combustion chamber and gas turbine
EP1939529A1 (fr) 2006-12-22 2008-07-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Revêtement de chambre de combustion CMC à structure à double couche
DE102006060857B4 (de) * 2006-12-22 2014-02-13 Deutsches Zentrum für Luft- und Raumfahrt e.V. CMC-Brennkammerauskleidung in Doppelschichtbauweise
DE102013220482B3 (de) * 2013-10-10 2015-04-09 Deutsches Zentrum für Luft- und Raumfahrt e.V. Haltevorrichtung zur wärmeausdehnungskompensierenden, klemmenden Fixierung eines hitzebeständigen Wandelements einer Brennkammer
EP3309456A1 (fr) * 2016-10-13 2018-04-18 Siemens Aktiengesellschaft Écran thermique avec carreau et support
WO2018068980A1 (fr) 2016-10-13 2018-04-19 Siemens Aktiengesellschaft Élément d'écran thermique à carreau et support

Also Published As

Publication number Publication date
WO2001063177A1 (fr) 2001-08-30

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