EP2522907A1 - Agencement de bouclier thermique - Google Patents

Agencement de bouclier thermique Download PDF

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Publication number
EP2522907A1
EP2522907A1 EP11165819A EP11165819A EP2522907A1 EP 2522907 A1 EP2522907 A1 EP 2522907A1 EP 11165819 A EP11165819 A EP 11165819A EP 11165819 A EP11165819 A EP 11165819A EP 2522907 A1 EP2522907 A1 EP 2522907A1
Authority
EP
European Patent Office
Prior art keywords
heat shield
recess
projection
gas side
hot gas
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Withdrawn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
EP11165819A
Other languages
German (de)
English (en)
Inventor
Andreas Böttcher
Sabine GRENDEL
Andre Kluge
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 EP11165819A priority Critical patent/EP2522907A1/fr
Priority to PCT/EP2012/056783 priority patent/WO2012152530A1/fr
Priority to CN201280023081.6A priority patent/CN103518100A/zh
Priority to EP12715376.5A priority patent/EP2686613A1/fr
Publication of EP2522907A1 publication Critical patent/EP2522907A1/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Withdrawn legal-status Critical Current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
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • 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
    • F23R3/007—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
    • 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
    • F23M2700/00—Constructional details of combustion chambers
    • F23M2700/005—Structures of combustion chambers or smoke ducts
    • F23M2700/0053—Bricks for combustion chamber walls
    • 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
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05005—Sealing means between wall tiles or panels

Definitions

  • the invention relates to a heat shield assembly having at least two adjacent heat shields, namely a first heat shield and a second heat shield, each having a hot gas side and an opposite cold gas side, the heat shields having a hot gas side and the cold gas side connecting adjacent side wall, wherein each one of the hot gas side and cold gas side spaced engaging pocket is inserted in the adjacent side wall.
  • Such a heat shield goes out of the EP 0 558 540 B1 out.
  • a heat shield for the combustion chamber of a gas turbine with a support structure which has a hot gas side and a cold gas side and an edge connecting the hot and cold gas side.
  • the support structure have grooves.
  • the holders are pushed into these grooves. The holders are thus secured in the support structure and thereby partially clasp the heat shield on its flanks.
  • the cross-sectional profile is designed so that the end of the holder, which is made with the largest width, is held in the groove.
  • the slightly narrower executed spring range of the holder can from the bottom of the groove for applying the Holding bias to be bent.
  • the retaining elements in this case remain displaceable in the groove, but are held positively perpendicular to the support structure surface.
  • the heat shield assembly has at least two adjacent heat shields, namely a first heat shield and a second heat shield, each having a hot gas side and an opposite cold gas side.
  • the heat shields have an adjacent side wall connecting the hot gas side and the cold gas side, wherein each one of the hot gas side and cold gas side spaced engagement pocket is introduced into the adjacent side wall.
  • the one side wall of the first heat shield starting from the engagement pocket toward the hot gas side, has a projection, wherein the projection has at least one projection side and an adjoining projection front edge having.
  • the second heat shield starting from the engaging pocket towards the hot gas side, has a recess which is substantially complementary to the projection, the recess having at least one recess side and an adjoining recess trailing edge, which are arranged starting from the engagement pocket between recess and projection is formed to the hot gas side open gap.
  • the projection side as well as the recess side has a slope with respect to the respective cold gas side.
  • the heat shield arrangement according to the invention reduces the entry of hot gas from the hot gas side.
  • Such an arrangement may also be referred to as a labyrinth seal.
  • the gap and the underlying metallic components are protected by the sealing effect against hot gas intake and additionally shielded against radiant heat. Due to the slope also remains the blocking or cooling air, which can be passed through the gap, longer in the engaging pocket as well as longer in the heat shields themselves, so that a better cooling of the components can be achieved. Thus, cooling air can be saved.
  • overheating and scaling, in particular the metallic components in the heat shield assembly can be prevented.
  • damage cases and downtimes can be avoided.
  • such a slope can be better compensated for the movements of the supporting structure, which lead to movements of the heat shields.
  • the inventive heat shield arrangement with the overlapping of the heat shields results in passive safety of the heat shields.
  • the gap between the heat shields for guiding cooling air is provided.
  • the projection side has a different pitch than the recess side.
  • a different pitch an increase or decrease in the velocity of the cooling air flowing through the gap can be effected.
  • cooling air can stay longer at particularly critical points, for example.
  • the hot gas intake can be further reduced.
  • FIG. 1 shows a heat shield assembly 1 according to the invention with two adjacent heat shields 2a, 2b.
  • the first heat shield 2a has a hot gas side 3a and a cold gas side 4a.
  • the second heat shield 2b comprises a hot gas side 3b and a cold gas side 4b.
  • the direction from the hot gas side 3a to the cold gas side 4a is referred to as a radial direction.
  • the heat shields 2a, 2b comprise at least two mutually adjacent side walls 6a, 6b.
  • the first heat shield 2 a now has an engagement pocket 5 a at a distance from the cold gas side 4 a and hot gas side 3 a.
  • this engaging pocket 5a can be considered as a groove which does not extend over the entire axial length of the side wall 6a, wherein the axial direction of the side wall 6a is transverse to the radial direction.
  • the second heat shield 2b also has a same engaging pocket 5b.
  • Holders 10a, 10b with gripping arms now engage the cold gas side 4a, 4b in the engaging pocket 5a, 5b.
  • the holders 10a, 10b with gripping arms cover a part of the side wall 6a, 6b. With these holders 10a, 10b, the heat shield 2a, 2b can be attached to a support structure (not shown).
  • the holders 10a, 10b are made of metal and therefore must be cooled.
  • the second heat shield 2b starting from the engagement pocket 5b toward the hot gas side 3b, has a recess which is complementary to the projection.
  • the recess has at least one recess side 7b and an adjoining recess trailing edge 8b.
  • the projection side 7a and the projection leading edge 8a of the first heat shield 2a are therefore formed so as to be complementary to the recess side 7b as well as the recess trailing edge 8b, thereby forming a gap 9 open to the hot gas side 3a, 3b between the recess and the projection.
  • the projection side 7a and the recess side 7b have a pitch with respect to the cold gas side 4a, 4b.
  • the heat shields 2a and 2b overlap.
  • the overlap acts as a seal against hot gas intake.
  • this overlap also acts as a protection against thermal radiation on the metallic components. Hot gas can now only with difficulty penetrate into the column 9. A hot gas intake from the cold gas side 4a, 4b is made much more difficult by the projection and the recess.
  • Cooling air is led to cool the holders 10a, 10b from the cold gas side 4a, 4b through the engaging pocket 5a, 5b and then through the gap 9 into the combustion chamber.
  • cooling air can be saved.
  • an overlap of the heat shields 2a, 2b increases the passive safety, for example against falling out of fragments in case of breakage of the heat shields 2a, 2b.
  • the slope also causes the cooling air to remain longer in the engaging pockets 5a, 5b than, for example, without such a slope, that is, when such a projection side 7a is nearly perpendicular to a projection leading edge 8b.
  • movements of the support structure (not shown), which lead to movements of the heat shields 2a, 2b, better compensated by such a slope, as if the Projection side 7a and the recess side 7b have no such slope.
  • the recess side 7b may have a different pitch than the projection side 7a.
  • the projection side 7a may have a smaller pitch with respect to the cold gas side 4a, 4b than the recess side 7b.
  • the beginning of the projection side 7a facing the engagement pocket 5a forms a larger gap 9 with the beginning of the recess side 7b facing the engagement pocket 5b than is the case at the end.
  • the cooling air velocity increases as it flows along the gap 9.
  • the hot gas inflow into the gap 9 can be prevented.
  • a greater slope of the projection side 7a to the recess side 7b with respect to the cold gas side 4a, 4b is possible.
EP11165819A 2011-05-12 2011-05-12 Agencement de bouclier thermique Withdrawn EP2522907A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11165819A EP2522907A1 (fr) 2011-05-12 2011-05-12 Agencement de bouclier thermique
PCT/EP2012/056783 WO2012152530A1 (fr) 2011-05-12 2012-04-13 Ensemble de boucliers thermiques
CN201280023081.6A CN103518100A (zh) 2011-05-12 2012-04-13 热屏蔽装置
EP12715376.5A EP2686613A1 (fr) 2011-05-12 2012-04-13 Ensemble de boucliers thermiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11165819A EP2522907A1 (fr) 2011-05-12 2011-05-12 Agencement de bouclier thermique

Publications (1)

Publication Number Publication Date
EP2522907A1 true EP2522907A1 (fr) 2012-11-14

Family

ID=45976933

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11165819A Withdrawn EP2522907A1 (fr) 2011-05-12 2011-05-12 Agencement de bouclier thermique
EP12715376.5A Withdrawn EP2686613A1 (fr) 2011-05-12 2012-04-13 Ensemble de boucliers thermiques

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP12715376.5A Withdrawn EP2686613A1 (fr) 2011-05-12 2012-04-13 Ensemble de boucliers thermiques

Country Status (3)

Country Link
EP (2) EP2522907A1 (fr)
CN (1) CN103518100A (fr)
WO (1) WO2012152530A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015044413A1 (fr) * 2013-09-30 2015-04-02 Siemens Aktiengesellschaft Bouclier thermique pour chambre de combustion de turbine à gaz et briques de bouclier thermique pour un tel bouclier thermique
EP3404329A1 (fr) * 2017-05-18 2018-11-21 United Technologies Corporation Interface de rail inférieur de panneau de combustion

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105531545B (zh) 2013-09-11 2017-09-22 西门子股份公司 燃气轮机燃烧室的楔形陶瓷热屏
GB201417495D0 (en) 2014-10-03 2014-11-19 Calderys France Refractory system for lining the interior walls of high-temperature furnaces or boilers and method of protection
EP3104077B1 (fr) * 2015-06-08 2021-05-12 ANSALDO ENERGIA S.p.A. Carreau céramique thermo-isolant présentant une faible épaisseur pour une chambre de combustion d'une turbine à gaz
DE102019200593A1 (de) 2019-01-17 2020-07-23 Siemens Aktiengesellschaft Brennkammer
CN114046212B (zh) * 2021-11-30 2023-06-27 西安航天动力研究所 一种具有热变形补偿功能的复合隔热结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558540B1 (fr) 1990-11-29 1995-06-14 Siemens Aktiengesellschaft Ecran thermique en ceramique monte sur une structure portante
WO1996004511A1 (fr) * 1994-08-05 1996-02-15 Yanovsky, Ilya Yakovlevich Chambre a combustion a tube a feu en ceramique
GB2317005A (en) * 1996-09-05 1998-03-11 Snecma Combustion chamber
WO1999009354A1 (fr) * 1997-08-18 1999-02-25 Siemens Aktiengesellschaft Element constitutif d'un bouclier thermique a recirculation du fluide de refroidissement
US6267066B1 (en) * 2000-03-15 2001-07-31 Saint-Gobain Industrial Ceramics Refractory tile system for boiler tube/heat exchanger
US20060176671A1 (en) * 2005-02-07 2006-08-10 Siemens Aktiengesellschaft Heat shield
EP1741981A1 (fr) * 2005-07-04 2007-01-10 Siemens Aktiengesellschaft Bouclier thermique en céramique et réacteur à gaz hautes températures recouvert d'un tel bouclier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB758213A (en) * 1954-03-03 1956-10-03 Parsons & Marine Eng Turbine Improvements in and relating to cylindrical combustion chambers or furnaces
DE19730751A1 (de) * 1996-07-24 1998-01-29 Siemens Ag Keramisches Bauteil für eine Wärmeschutzschicht sowie Wärmeschutzschicht

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558540B1 (fr) 1990-11-29 1995-06-14 Siemens Aktiengesellschaft Ecran thermique en ceramique monte sur une structure portante
WO1996004511A1 (fr) * 1994-08-05 1996-02-15 Yanovsky, Ilya Yakovlevich Chambre a combustion a tube a feu en ceramique
GB2317005A (en) * 1996-09-05 1998-03-11 Snecma Combustion chamber
WO1999009354A1 (fr) * 1997-08-18 1999-02-25 Siemens Aktiengesellschaft Element constitutif d'un bouclier thermique a recirculation du fluide de refroidissement
US6267066B1 (en) * 2000-03-15 2001-07-31 Saint-Gobain Industrial Ceramics Refractory tile system for boiler tube/heat exchanger
US20060176671A1 (en) * 2005-02-07 2006-08-10 Siemens Aktiengesellschaft Heat shield
EP1741981A1 (fr) * 2005-07-04 2007-01-10 Siemens Aktiengesellschaft Bouclier thermique en céramique et réacteur à gaz hautes températures recouvert d'un tel bouclier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015044413A1 (fr) * 2013-09-30 2015-04-02 Siemens Aktiengesellschaft Bouclier thermique pour chambre de combustion de turbine à gaz et briques de bouclier thermique pour un tel bouclier thermique
EP3404329A1 (fr) * 2017-05-18 2018-11-21 United Technologies Corporation Interface de rail inférieur de panneau de combustion
US10473331B2 (en) 2017-05-18 2019-11-12 United Technologies Corporation Combustor panel endrail interface

Also Published As

Publication number Publication date
WO2012152530A1 (fr) 2012-11-15
EP2686613A1 (fr) 2014-01-22
CN103518100A (zh) 2014-01-15

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