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EP2423596A1 - Elément de bouclier thermique - Google Patents

Elément de bouclier thermique Download PDF

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Publication number
EP2423596A1
EP2423596A1 EP10174291A EP10174291A EP2423596A1 EP 2423596 A1 EP2423596 A1 EP 2423596A1 EP 10174291 A EP10174291 A EP 10174291A EP 10174291 A EP10174291 A EP 10174291A EP 2423596 A1 EP2423596 A1 EP 2423596A1
Authority
EP
European Patent Office
Prior art keywords
heat shield
shield element
side wall
recess
passage
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Withdrawn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
EP10174291A
Other languages
German (de)
English (en)
Inventor
Andreas Böttcher
Olga Deiss
Christopher Grandt
Thomas Grieb
Ljiljana Hanf
Andre Kluge
Christian Scholz
Rostislav Teteruk
Daniel Vogtmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP10174291A priority Critical patent/EP2423596A1/fr
Priority to CN201180041516.5A priority patent/CN103080651B/zh
Priority to RU2013113457/06A priority patent/RU2561957C2/ru
Priority to EP11721510.3A priority patent/EP2596290B1/fr
Priority to PCT/EP2011/058153 priority patent/WO2012025265A2/fr
Publication of EP2423596A1 publication Critical patent/EP2423596A1/fr
Withdrawn legal-status Critical Current

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

Definitions

  • the invention relates to a heat shield element according to the preamble of claim 1.
  • the heat shield elements of turbine engines such as gas turbines and turbine engines, as used in power-generating power plants and in larger aircraft, have correspondingly large shielded by heat shields surfaces in the interior of the combustion chambers.
  • the shield must be composed of a plurality of individual ceramic heat shield elements spaced apart from one another with sufficient clearance. This gap provides the heat shield elements with sufficient space for thermal expansion.
  • cooling fluid in the form of cooling air is blown through cooling channels as an effective countermeasure through the gaps in the direction of the combustion chamber. This cooling air is also used to specifically blow on the metallic brackets and thus to cool, with which the ceramic heat shield elements (CHS, Ceramic Heat Shields) are clamped to the support structure.
  • CHS Ceramic Heat Shields
  • brackets In order to carry out the brackets as simply and integrally as possible, a construction is known in which these brackets are on the one hand in the circulating in the support structure encircling and parallel mounting grooves inserted, and on the other hand formed with gripping portions in the formed in lateral edges of the ceramic heat shield elements Halteruten be clamped.
  • the heat shield elements are successively with the holders in the grooves of the Inserted support structure, wherein the trailing elements obstruct the previously positioned in their positions.
  • a circular series of heat shield elements can be formed in a combustion chamber of a gas turbine.
  • the last remaining heat shield element can not be mounted in this way because the mutually present, adjacent heat shield elements block a tangentially directed assembly movement. Often, such a last heat shield element is referred to as a dummy plate or dummy. Consequently, solutions are used with screws for attaching the last heat shield element, which allow mounting of the heat shield element in the direction of the surface normal of the support structure.
  • a known screwing uses this four screws, which engage in the, formed in lateral walls of the heat shield element recesses for this purpose.
  • This solution is disadvantaged in that the assembly requires a handling problem.
  • the handling of the four screws forces the use of reliable fixatives such as adhesive or tape. If the screws are lost, they must be found before commissioning due to high risk of damage to a turbine.
  • an overhead mounting is necessary, which is very difficult because the screws can tilt through the fixation by tape and thus can not be inserted into the holes provided. Since this is the last heat shield element, the screws can not be positioned by hand, but have to be threaded into the holes using an Allen key - without sight.
  • the object of the present invention is to specify a heat shield element, in particular a cap stone or a dummy, which allows easy mounting to the support structure.
  • a heat shield element with at least one side wall, wherein the side wall comprises at least one recess with a passage pointing in the direction of a support structure.
  • a fastening screw can be introduced, which is feasible through the passage for the vertical fixing of the heat shield element to a provided in the support structure bolting means.
  • the passage in the side wall is a securing means which is at least partially formed by the side wall. The securing means causes the lateral falling out of the fastening screw from the heat shield element during assembly difficult or even prevented.
  • the securing means is a wedge-shaped side wall piece, which is formed by an oblique recess at the passage.
  • an oblique recess can be incorporated directly in the production, so that no additional manufacturing step is necessary here.
  • the securing means is a web-shaped side wall piece. This is directly attached to the passage and can also mitübracht directly incorporated in the production of the entire heat shield element, for example.
  • the web-shaped side wall piece has a lateral opening into which the fastening screw can be introduced and parallel is displaceable to the web-shaped side wall piece in the direction of recess with passage. The fixing screw can be brought so easily to their place of installation.
  • the individual heat shield elements 13 or so-called stones are fastened to the support structure 17 by means of a total of four screw connections.
  • they are keystones or dummies of a heat shield.
  • recesses 4 or pockets are formed in the side walls 16 of the heat shield element 13 .
  • Each recess 4 further has in the direction of the support structure 17 facing passages, which are formed in the prior art as a lateral recess 1.
  • a fastening screw 18 is inserted laterally. Under the screw head of the fastening screw 18, a disc or an angle plate 2 is attached, which fixes the fastening screw 18 against rotation.
  • the fastening screw 18 with the disc or the angle plate 2 can thus laterally into the lateral recess 1 and
  • a mold cavity for receiving a correspondingly shaped tool tip of a screwing tool is provided in the head of the fastening screw 18.
  • This mold recess and the tool tip is preferably designed as one of the known Inbusstecktagenen, but may also have other shapes, such as cross or transverse slot.
  • the diameter of this access opening 5 is substantially smaller than the diameter of the head 2 of the fastening screw 18 and is dimensioned such that it is sufficient to allow a screwing tool to pass.
  • hot combustion gases therefore only pass to a limited extent through the size-minimized access openings 5 into the depressions 4 to the metallic panes 2 and heads of the fastening screws 18.
  • the depressions 4 are purged by the cooling fluid, which passes through the intermediate gaps d from the support structure 17 is blown into the combustion chamber to lock the wells 4 against the entry of hot gas.
  • the intermediate gap d is provided in order to provide sufficient space for the thermal expansion of individual heat shield elements 8, 13.
  • Each fastening screw 18 is screwed into a screw connection in the support structure 17, which in the present example is designed in each case as a cup spring assembly 19.
  • a threaded nut (not shown) serves to compress the disc spring assembly 19.
  • the biased plate spring assemblies 19 provide a resiliently yielding attachment of the heat shield element 13, which is required to z. B. due to thermal and thermoacoustic conditions induced movements compensate.
  • the four mounting screws 18 must be inserted laterally with the discs 2 in the respective lateral recesses 4 and recesses 1 and secured against falling out during assembly by adhesive tapes.
  • Fig. 2 1 shows a top view of a first heat shield element 14 according to the invention.
  • the heat shield element 14 has a depression 4 with a passage 30 in the direction of the support structure 17 (FIG. Fig. 1 ) for vertically fixing the heat shield element 14 to the support structure 17 (FIG. Fig. 1 ) by means of the fastening screw 18 (FIG. Fig. 3 ) on one in the support structure 17 ( Fig. 1 ) provided screwing 19 ( Fig. 1 ).
  • an oblique recess 31 is now mounted in the side wall 16, in which the fastening screw 18 (FIG. Fig. 3 ) can be used from the outside.
  • Fig. 3 shows the introduction of a fastening screw 18 in such a heat shield element 14.
  • the fastening screw 18 is inserted from the outside. Subsequently, the fastening screw 18 is tilted 40 and is thus brought into its final mounting position. By tilting 40 of the head of the fastening screw 18 slides into the recess 4 and the stem of the fastening screw 18 into the passage 30.
  • a wedge-shaped side wall portion 44 is formed at the passage 30, which serves as a securing means. This wedge-shaped side wall piece 44 complicates the lateral falling out of the fastening screw 18 from the heat shield element 14 during assembly.
  • the assembly is considerably simplified so that tools, such as adhesive tape and assembly tapes, can now be dispensed with.
  • the heat shield element 14 now has more ceramic material on the side wall 16 in the region of the depression 4 than the heat shield element 13 with the recess 1 (FIG. Fig. 1 ) in the prior art.
  • the stability of the heat shield element 14 according to the invention is thus increased in the region of the depression 4 and a breaking of the heat shield element edges is prevented.
  • the recess 31 can
  • in the manufacture of the heat shield element 14 are introduced with the same, so that here no additional, costly manufacturing step is more necessary.
  • Fig. 4 shows a plan view of a second invention- ⁇ es heat shield element 14.
  • the securing means is a web-shaped side wall portion 41. This is attached to the passage 30.
  • the web-shaped side wall piece 41 makes the lateral falling out of the fastening screw 18 difficult ( Fig. 1 ) from the heat shield element 14 during assembly.
  • the web-shaped side wall piece 41 has a lateral opening 42.
  • the fastening screw 18 ( Fig. 1 ) brought in.
  • the fastening screw 18 ( Fig. 1 ) parallel to the web-shaped side wall piece 41 in the direction of recess 4 with passage 30, and thus, as it were, pushed into the recess 4 and into the passage 30.
  • the web-shaped side wall portion 41 in the direction of the opening 42 have a thickening, resulting in falling out of the fastening screw 18 (FIG. Fig. 1 ) counteracts in the direction of the opening 42.
  • the heat shield element 14 now has more ceramic material on the side wall 16 in the region of the depression 4 than the heat shield element 13 with the recess 1 (FIG. Fig. 1 ) in the prior art. The stability of the heat shield element 14 according to the invention is thus increased in the region of the depression 4 and a breaking of the heat shield element edges is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Exhaust Silencers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Connection Of Plates (AREA)
  • Fuses (AREA)
EP10174291A 2010-08-27 2010-08-27 Elément de bouclier thermique Withdrawn EP2423596A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10174291A EP2423596A1 (fr) 2010-08-27 2010-08-27 Elément de bouclier thermique
CN201180041516.5A CN103080651B (zh) 2010-08-27 2011-05-19 热屏蔽元件
RU2013113457/06A RU2561957C2 (ru) 2010-08-27 2011-05-19 Элемент теплозащитного экрана
EP11721510.3A EP2596290B1 (fr) 2010-08-27 2011-05-19 Élément de protection thermique
PCT/EP2011/058153 WO2012025265A2 (fr) 2010-08-27 2011-05-19 Élément de protection thermique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10174291A EP2423596A1 (fr) 2010-08-27 2010-08-27 Elément de bouclier thermique

Publications (1)

Publication Number Publication Date
EP2423596A1 true EP2423596A1 (fr) 2012-02-29

Family

ID=43500163

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10174291A Withdrawn EP2423596A1 (fr) 2010-08-27 2010-08-27 Elément de bouclier thermique
EP11721510.3A Not-in-force EP2596290B1 (fr) 2010-08-27 2011-05-19 Élément de protection thermique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11721510.3A Not-in-force EP2596290B1 (fr) 2010-08-27 2011-05-19 Élément de protection thermique

Country Status (4)

Country Link
EP (2) EP2423596A1 (fr)
CN (1) CN103080651B (fr)
RU (1) RU2561957C2 (fr)
WO (1) WO2012025265A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013135859A3 (fr) * 2012-03-16 2013-11-14 Siemens Aktiengesellschaft Dérivation de chambre de combustion annulaire
EP2730843A1 (fr) * 2012-11-13 2014-05-14 Rolls-Royce Deutschland Ltd & Co KG Bardeaux de chambre de combustion d'une turbine à gaz
EP2873921A1 (fr) * 2013-11-14 2015-05-20 Rolls-Royce Deutschland Ltd & Co KG Élément de blindage contre la chaleur d'une chambre de combustion d'une turbine à gaz
CN107076414A (zh) * 2014-10-20 2017-08-18 西门子股份公司 热屏蔽元件和用于其制造的方法
WO2025082662A1 (fr) * 2023-10-19 2025-04-24 Siemens Energy Global GmbH & Co. KG Chambre de combustion d'une turbine à gaz à refroidissement optimisé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019204746A1 (de) 2019-04-03 2020-10-08 Siemens Aktiengesellschaft Hitzeschildkachel mit Dämpfungsfunktion
US11603799B2 (en) * 2020-12-22 2023-03-14 General Electric Company Combustor for a gas turbine engine
US12313261B1 (en) * 2024-04-05 2025-05-27 Rtx Corporation Combustor liner panels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020050237A1 (en) * 1998-03-19 2002-05-02 Bernard Becker Wall segment for a combustion area, and a combustion area
EP1884713A1 (fr) * 2006-07-25 2008-02-06 Siemens Aktiengesellschaft Ensemble écran thermique, en particulier pour une turbine à gaz
EP2230454A1 (fr) * 2009-03-18 2010-09-22 Siemens Aktiengesellschaft Dispositif destiné au montage d'un élément de bouclier thermique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1392995A1 (ru) * 1986-04-19 1994-04-15 Казахский научно-исследовательский институт энергетики Корпус камеры сгорания мгд-электростанции
DE10003728A1 (de) * 2000-01-28 2001-08-09 Siemens Ag Hitzeschildanordnung für eine Heißgas führende Komponente, insbesondere für Strukturteile von Gasturbinen
EP1284390A1 (fr) * 2001-06-27 2003-02-19 Siemens Aktiengesellschaft Ensemble bouclier thermique pour un composant acheminant un gaz chaud, notamment pour des pièces de structure de turbines à gaz
EP1467151A1 (fr) * 2003-04-10 2004-10-13 Siemens Aktiengesellschaft Bouclier thermique
EP1561997A1 (fr) * 2004-01-27 2005-08-10 Siemens Aktiengesellschaft Bouclier thermique
ES2378375T3 (es) * 2005-02-07 2012-04-11 Siemens Aktiengesellschaft Pantalla térmica
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020050237A1 (en) * 1998-03-19 2002-05-02 Bernard Becker Wall segment for a combustion area, and a combustion area
EP1884713A1 (fr) * 2006-07-25 2008-02-06 Siemens Aktiengesellschaft Ensemble écran thermique, en particulier pour une turbine à gaz
EP2230454A1 (fr) * 2009-03-18 2010-09-22 Siemens Aktiengesellschaft Dispositif destiné au montage d'un élément de bouclier thermique

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013135859A3 (fr) * 2012-03-16 2013-11-14 Siemens Aktiengesellschaft Dérivation de chambre de combustion annulaire
CN104169649A (zh) * 2012-03-16 2014-11-26 西门子公司 环形燃烧室旁通装置
CN104169649B (zh) * 2012-03-16 2016-11-09 西门子公司 环形燃烧室旁通装置
EP2730843A1 (fr) * 2012-11-13 2014-05-14 Rolls-Royce Deutschland Ltd & Co KG Bardeaux de chambre de combustion d'une turbine à gaz
US9683743B2 (en) 2012-11-13 2017-06-20 Rolls-Royce Deutschland Ltd & Co Kg Combustion chamber tile of a gas turbine
EP2873921A1 (fr) * 2013-11-14 2015-05-20 Rolls-Royce Deutschland Ltd & Co KG Élément de blindage contre la chaleur d'une chambre de combustion d'une turbine à gaz
US10591162B2 (en) 2013-11-14 2020-03-17 Rolls-Royce Deutschland Ltd & Co Kg Heat shield for a gas turbine combustion chamber
CN107076414A (zh) * 2014-10-20 2017-08-18 西门子股份公司 热屏蔽元件和用于其制造的方法
CN107076414B (zh) * 2014-10-20 2019-06-14 西门子股份公司 热屏蔽元件和用于其制造的方法
WO2025082662A1 (fr) * 2023-10-19 2025-04-24 Siemens Energy Global GmbH & Co. KG Chambre de combustion d'une turbine à gaz à refroidissement optimisé

Also Published As

Publication number Publication date
RU2013113457A (ru) 2014-10-10
RU2561957C2 (ru) 2015-09-10
EP2596290B1 (fr) 2015-08-05
CN103080651B (zh) 2016-03-02
WO2012025265A3 (fr) 2013-01-03
EP2596290A2 (fr) 2013-05-29
WO2012025265A2 (fr) 2012-03-01
CN103080651A (zh) 2013-05-01

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