EP1712840A1 - Bouclier thermique avec boulon de fixation - Google Patents

Bouclier thermique avec boulon de fixation Download PDF

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Publication number
EP1712840A1
EP1712840A1 EP05008093A EP05008093A EP1712840A1 EP 1712840 A1 EP1712840 A1 EP 1712840A1 EP 05008093 A EP05008093 A EP 05008093A EP 05008093 A EP05008093 A EP 05008093A EP 1712840 A1 EP1712840 A1 EP 1712840A1
Authority
EP
European Patent Office
Prior art keywords
heat shield
fastening bolt
support structure
hot gas
gas space
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Withdrawn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
EP05008093A
Other languages
German (de)
English (en)
Inventor
Claudia Barbeln
Marcus Fischer
Jens Kleinfeld
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 EP05008093A priority Critical patent/EP1712840A1/fr
Publication of EP1712840A1 publication Critical patent/EP1712840A1/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Withdrawn legal-status Critical Current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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/60—Support structures; Attaching or mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00017—Assembling combustion chamber liners or subparts

Definitions

  • the invention relates to a heat shield arrangement for a hot gas space, in particular a combustion chamber of a gas turbine, with a support structure, at least one fastening bolt and at least one heat shield, which can be fastened to the support structure by turning the at least one fastening bolt. Furthermore, the invention relates to a gas turbine with such a heat shield assembly.
  • Heat shield assemblies are provided, for example, as inner walls of the combustion chamber of a gas turbine, thereby shielding the support structure of the combustion chamber against the enormously high temperatures inside the combustion chamber.
  • the fastening bolts serve to actually secure the heat shields to the support structure and often function in the manner of a bayonet lock.
  • the thus twisted fastening bolt engages with a projecting pin portion in front of a catch portion of the heat shield and thereby holds the heat shield to the support structure in position. To rotate the mounting bolts they must be accessible from the inside of the combustion chamber or the hot gas space.
  • the manhole is known as access for assembly and repair work in the combustion chamber. It also serves as an exit for the person who is to attach the heat shields in the combustion chamber.
  • An object of the invention is to provide an arrangement of a heat shield on a hot gas chamber, which is also suitable for attaching heat shields in the region of a manhole of the hot gas chamber.
  • the object is achieved according to the invention with an arrangement of the generic type, in which the fastening bolt is provided at its end remote from the hot gas space end portion with a key approach, with which the fastening bolt from outside the hot gas space is rotated. Furthermore, the object is achieved with a gas turbine which is provided with such a heat shield arrangement according to the invention, in particular in the region of a manhole.
  • fastening bolts for attaching heat shields According to the locking concept of previously known fastening bolts for attaching heat shields has been fundamentally changed by the fastening bolt is not to be operated from the interior of the hot gas chamber to be disguised, but from the outside.
  • a fastening bolt is provided according to the invention, which can be rotated from the outside by means of a key or other suitable tool.
  • the heat shields as far as possible and also inventively designed fastening bolts are used before the fitter leaves the combustion chamber through the manhole.
  • the installer then optionally uses the last heat shield from the outside and finally locks all fastening bolts according to the invention from the outside of the combustion chamber. With this locking the associated heat shields are finally positioned and kept substantially stationary in this position for the operation of the associated gas turbine.
  • the fastening bolts designed according to the invention furthermore have the advantage that they can be designed particularly simply on the end region facing the interior of the combustion chamber because they do not have to be actuatable from there.
  • the invention is also in contrast to possible large-area recesses, which could in principle be provided next to each fastening bolt in the support structure in order to actuate through them the inner fastening bolts.
  • the inventively designed fastening bolt can be pre-assembled in a fundamentally similar manner and subsequently also secured in its final position, and thus also on positive experience from known Constructs can be used, it is advantageous if the fastening bolt is provided at its end remote from the hot gas space end portion with a threaded portion on the outside of the support structure, a threaded nut is screwed.
  • the length of the threaded portion of this can also be designed such that the fastening bolt is rotatable with a little screwed nut for securing the at least one heat shield and is secured with a fully tightened nut against reverse rotation.
  • the solution according to the invention is particularly advantageous for those regions of a hot gas chamber which are expedient in which an internal assembly of heat shields is difficult or even impossible.
  • One of the most important of these areas is the manhole at combustion chambers of modern gas turbines.
  • the figure is a perspective view of an embodiment of an inventively designed fastening bolt.
  • a fastening bolt 10 for attaching a heat shield 11 is also shown in dashed lines illustrated supporting structure 12 of a further not illustrated combustion chamber of a gas turbine danot.
  • the fastening bolt 10 has a substantially disk-shaped head 14, projecting from the diametrically two projecting head portions 16 and 18.
  • From the head 14 further protrudes from a shaft 20 which is passed through a through hole 22 which is formed in the support structure 12.
  • the head 14 is directed towards a hot gas space or combustion chamber 24 and the shaft 20 is designed such that the shaft 20 has an end region 26 which comes to rest on the side of the support structure 12 facing away from the hot gas space.
  • a threaded portion 28 is formed on the shaft 20.
  • the actual end of the shaft 20 is designed with a key approach 30, for example in the form of a square.
  • the fastening bolt 10 thus formed is used during assembly of the heat shields 11 together with a threaded nut 32 and a key 34 or tool as follows.
  • the heat shield (s) is roughly prepositioned on the support structure 12 and then at least one of the fastening bolts 10 is arranged there.
  • at least one of the fastening bolts 10 may first be inserted in the associated through-opening 22 and subsequently roughly positioned in the vicinity thereof at least one heat shield 11.
  • the threaded nut 32 is first screwed onto the threaded portion 28 for a short distance. This screwing is done only as far as then the fastening bolt 10 can be rotated at least about an angle of 90 °.
  • the rotation by 90 ° is done with the key 34, which can be placed on the key approach 30 from outside the hot gas space 24 and also from outside the support structure 12.
  • the threaded nut 32 is finally screwed onto the threaded portion 28 until it rests against the support structure 12. In this position, the threaded nut 32 may optionally be secured against loosening by a rotation, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Clamps And Clips (AREA)
EP05008093A 2005-04-13 2005-04-13 Bouclier thermique avec boulon de fixation Withdrawn EP1712840A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05008093A EP1712840A1 (fr) 2005-04-13 2005-04-13 Bouclier thermique avec boulon de fixation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05008093A EP1712840A1 (fr) 2005-04-13 2005-04-13 Bouclier thermique avec boulon de fixation

Publications (1)

Publication Number Publication Date
EP1712840A1 true EP1712840A1 (fr) 2006-10-18

Family

ID=35604770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05008093A Withdrawn EP1712840A1 (fr) 2005-04-13 2005-04-13 Bouclier thermique avec boulon de fixation

Country Status (1)

Country Link
EP (1) EP1712840A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2730843A1 (fr) * 2012-11-13 2014-05-14 Rolls-Royce Deutschland Ltd & Co KG Bardeaux de chambre de combustion d'une turbine à gaz
EP2738470A1 (fr) * 2012-11-28 2014-06-04 Rolls-Royce Deutschland Ltd & Co KG Assemblage pour attacher des éléments de bouclier thermique à la paroi d'une chambre de combustion d'une turbine à gaz

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173734B (de) * 1962-10-11 1964-07-09 Siemens Ag Brennkammer, insbesondere fuer Gasturbinen, mit einer aus feuerfesten Steinen aufgebauten Auskleidung
US4748806A (en) * 1985-07-03 1988-06-07 United Technologies Corporation Attachment means
EP0724116A2 (fr) * 1995-01-28 1996-07-31 ABB Management AG Garniture céramique
US6341485B1 (en) * 1997-11-19 2002-01-29 Siemens Aktiengesellschaft Gas turbine combustion chamber with impact cooling
US20020056277A1 (en) * 2000-11-11 2002-05-16 Parry Gethin M. Double wall combustor arrangement
EP1467151A1 (fr) * 2003-04-10 2004-10-13 Siemens Aktiengesellschaft Bouclier thermique
EP1477737A2 (fr) * 2003-05-12 2004-11-17 Siemens Westinghouse Power Corporation Système d'attache pour fixer une chemise de chambre de combustion sur son support

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173734B (de) * 1962-10-11 1964-07-09 Siemens Ag Brennkammer, insbesondere fuer Gasturbinen, mit einer aus feuerfesten Steinen aufgebauten Auskleidung
US4748806A (en) * 1985-07-03 1988-06-07 United Technologies Corporation Attachment means
EP0724116A2 (fr) * 1995-01-28 1996-07-31 ABB Management AG Garniture céramique
US6341485B1 (en) * 1997-11-19 2002-01-29 Siemens Aktiengesellschaft Gas turbine combustion chamber with impact cooling
US20020056277A1 (en) * 2000-11-11 2002-05-16 Parry Gethin M. Double wall combustor arrangement
EP1467151A1 (fr) * 2003-04-10 2004-10-13 Siemens Aktiengesellschaft Bouclier thermique
EP1477737A2 (fr) * 2003-05-12 2004-11-17 Siemens Westinghouse Power Corporation Système d'attache pour fixer une chemise de chambre de combustion sur son support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP2738470A1 (fr) * 2012-11-28 2014-06-04 Rolls-Royce Deutschland Ltd & Co KG Assemblage pour attacher des éléments de bouclier thermique à la paroi d'une chambre de combustion d'une turbine à gaz
US9341372B2 (en) 2012-11-28 2016-05-17 Rolls-Royce Deutschland Ltd & Co Kg Tile fastening arrangement of a gas-turbine combustion chamber

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