EP3446038A1 - Heat shield assembly of a combustion chamber having a disk spring set - Google Patents
Heat shield assembly of a combustion chamber having a disk spring setInfo
- Publication number
- EP3446038A1 EP3446038A1 EP17730123.1A EP17730123A EP3446038A1 EP 3446038 A1 EP3446038 A1 EP 3446038A1 EP 17730123 A EP17730123 A EP 17730123A EP 3446038 A1 EP3446038 A1 EP 3446038A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat shield
- plate
- sleeve
- receiving sleeve
- pressure plate
- 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.)
- Granted
Links
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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position
-
- 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
- F23M2900/05002—Means for accommodate thermal expansion of the wall liner
-
- 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
- F23R2900/00005—Preventing fatigue failures or reducing mechanical stress in gas turbine 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
- F23R3/002—Wall structures
Definitions
- Heat shield arrangement in a combustion chamber with cup springs the invention relates to a heat shield assembly of a combustor of a gas turbine, the combustion chamber having a support structure having mounted thereon ⁇ heat shield elements.
- a plurality of spring devices for elastic see attachment of the heat shield elements is provided in the support structure.
- a correspondingly elastic fastening of the fastening bolt spring assemblies are provided in a known manner in the support structure of the combustion chamber at the individual fastening points, which can be arranged in different ways on the support structure.
- a plurality of disk springs, and a fastening nut are arranged on the rear facing away from the combustion chamber interior rear side.
- an open to the combustion chamber rear sleeve which contains a plurality of disc springs and having on the back of a pressure plate as a mother.
- This pressure plate is movable in the axial direction of the sleeve and is secured by a securing element against loss.
- a disadvantage of this solution has been found that an expansion of the plate spring package is made more difficult directly from the support structure many times. Removal of the telescopic springs from the sleeve requires accessibility on the back of the support structure. However, this is not given depending on the location of the combustion chamber.
- EP 862 740 Bl discloses a plate 1 spring assembly, is employed in the egg ⁇ ne open to the combustion chamber inside the sleeve.
- a bottom of the sleeve arranged on the rear side forms the securing element against the loss of the required pressure plate.
- On the pressure plate are analog disc springs, being used as an abutment for the disc springs, a disc with a supporting external thread.
- the external thread is designed to coincide with theticiange ⁇ winch on the sleeve, so that the sleeve and the disc can be screwed into a corresponding threaded hole in the support ⁇ structure.
- the object of the present invention is therefore to provide a fastening arrangement with which a simple fastening of the heat shield elements to the support structure can take place and, if necessary, an exchange of the spring elements is possible.
- the heat shield arrangement of a combustion chamber wherein the embodiment of the generic heat shield assembly is particularly suitable for use in a gas turbine.
- a support structure and a plurality of heat shield elements arranged on the support structure are required.
- the heat shield elements are mounted on the combustion chamber interior facing side of the support structure.
- the type of attachment of the plurality of heat shield elements can be done in different ways.
- Mounting bolts mounted on a spring device.
- the support structure on a through hole, in which the spring device is mounted.
- the type of attachment of the spring device in the through hole of the support structure is initially irrelevant.
- the generic spring device for use in the heat shield assembly has a receiving sleeve secured in or secured to the support structure. Furthermore, a fixed relative to the receiving sleeve is required
- Plating plate which is arranged on the side facing the heat shield element side of the spring device. On relieve ⁇ gender side, that is located on a pointing away from the heat shield back of the spring device is a fixed relative to the receiving sleeve locking plate.
- the receiving sleeve forms together with the contact plate and against ⁇ overlying the backup plate has a receiving space for An ⁇ order at least one spring element.
- located between the contact plate and the backup plate axially in the direction of the central axis of the spring device movable pressure plate.
- the at least one spring element is here ⁇ arranged between the pressure plate and the contact plate.
- the installation plate ei ⁇ ne through bore for receiving (By plugging) of a Befes- on actuation bolt Obviously thus is the
- the abutment plate is fastened removable in the receiving sleeve according to the invention.
- the inventive arrangement of the contact plate in the receiving sleeve a pre-assembly of the spring device for installation in the support structure is created.
- the contact plate must subsequently be installed in the support structure of the receiving sleeve, so that an immediate pre-assembly of the spring assembly is not possible. Rather, at best, the elements can be packed together in a loose manner.
- the spring device can be pre-assembled in a pre-assembly now, however, so that a fast is Mon ⁇ day permits at the installation in the supporting structure.
- the erfindungsge ⁇ Permitted embodiment enables a subsequent disassembly of the spring ⁇ elements, as that the receiving sleeve is analogous to the known embodiment disassembled.
- the attachment of the receiving sleeve takes place in the support structure is initially irrelevant, this can be done for example by welding, soldering or gluing. It is also possible to use a bayonet connection for mounting the spring device. Particularly advantageous for secure and at the same time easy attachment of the spring device in the support structure, in particular taking into account the occurrence Temperatures, it is when the receiving sleeve has an external thread, which is screwed into an internal thread of the passage through ⁇ bore. To protect against a subsequent loosening during operation of the gas turbine, it is possible lent, the thread of the combustion chamber inner side or from the back to caulking, so that unintentional Losdre ⁇ hen is in fact prevented.
- the embodiment of the backup board is initially irrelevant, provided it is ensured that the Sich ceremoniessplat ⁇ te a loss of the printing plate in the state vormon elected ver ⁇ hindrance. In this respect, it is only necessary that the backup plate receives the Fe ⁇ forces occurring in the preassembled state ⁇ .
- the securing plate is arranged integrally on the receiving sleeve. In this respect, the receiving sleeve forms with the Si ⁇ cherungsplatte an open to the combustion chamber inside pot.
- the locking plate serves only to secure the pressure plate within the receiving sleeve. In this respect, this can have a diverse shape. It is particularly advantageous, it is, however, if the backup plate having analogous to the contact plate ei ⁇ ne throughbore. This makes it possible that the fastening bolt when screwing into the spring device can escape from the rear side of the spring device and insofar a sufficient space for screwing is present.
- the contact plate is formed in a particularly advantageous manner as integ ⁇ raler part of an inner sleeve.
- the inner sleeve in the receiving sleeve is thus dismantled be ⁇ consolidates for fixing the bearing plate in the receiving sleeve.
- the inner sleeve is designed such in a particularly advantageous manner that the spring element or at EXISTING ⁇ densein more spring elements it is attached ⁇ arranged in the inner sleeve / are.
- the abutment plate or, in the case of an embodiment of the abutment plate, as an integral component of an inner sleeve the inner sleeve is screwed into the receiving sleeve. Consequently, the contact plate or the inner sleeve has an external thread and, in contrast, the receiving sleeve has an internal thread.
- a threaded connection it is also possible to provide a bayonet connection between the bearing plate or the inner sleeve and the receiving sleeve.
- the bayonet connection is advantageous derelements such interpreted in the light of the spring forces of Fe, that the contact plate or the inner sleeve at a ⁇ rest on the securing plate to the printing plate can be mounted.
- the forces the bayonet connection between the bearing plate or the inner sleeve and the receiving sleeve is secured against unintentional loosening.
- a flat to the heat shield element top is formed. This facilitates the design as well as the installation in the support structure.
- a plant of the hit ⁇ zeschildelements is provided on a side facing the combustion chamber inside upper surface of the receiving sleeve and to a corresponding facing the combustion chamber inner side top of 6.3plat ⁇ te when attaching the heat shield element on the support structure.
- the common system when using a screw connection between the contact plate or the inner sleeve and the receiving sleeve, the common system performs both on the Anla ⁇ geplatte and the receiving sleeve on the heat shield element to prevent relative Losfans the contact plate relative to the receiving sleeve.
- the fastening of the fastening bolt to the pressure plate for fastening the heat shield element to the support structure can also be varied, wherein, for example, a bayonet connection can be used.
- a bayonet connection can be used.
- ⁇ fixing bolts is buildin ⁇ Untitled means of a thread in the pressure plate. Accordingly, the fastening bolt turns as a screw and the pressure plate as a mother.
- the Ro ⁇ tion is prevented around the longitudinal axis of the spring device by at least one guide plate present on the pressure plate, wherein the guide web is guided in a guide groove.
- an inner guide groove is present in the inner sleeve, in which the guide Footbridge is led.
- an outer guide ⁇ nut is present in the receiving sleeve ⁇ .
- the use of a single guide web is sufficient JE but in particular for the prevention of tilting of the Ver ⁇ application of two or a plurality of guide ribs and corresponding guide grooves is advantageous.
- the arrangement can be reversed, so that the sleeve on the inner sleeve and / or recording a guide web is arranged and for this purpose entspre ⁇ accordingly the pressure plate has a guide groove.
- a particularly advantageous method for preventing a Losdusens or a relative movement of the inner sleeve relative to the receiving sleeve - regardless of using a bayonet connection or a fferably - is created when the pressure plate is guided by means of a guide web both on the on ⁇ receiving sleeve and on the inner sleeve,
- the guide on the inner sleeve becomes effective only when a fastening bolt is fastened and the pressure plate is pulled against the contact plate.
- the inner sleeve is made shorter at least by the thickness of the pressure plate as it made the depth of the receiving sleeve ⁇ light. In this respect, when the pressure plate is resting on the securing plate, a free rotation of the inner sleeve relative to
- An essential part of the heat shield assembly according to the invention is a novel spring device according to the invention as described above. This enables in particular the Use in a combustion chamber of a gas turbine, in which high operational thermal strains occur as well as a secure attachment must be ensured for vibrations.
- the heat shield arrangement according to the invention further enables the realization of a combustion chamber according to the invention by using a corresponding heat shield arrangement with a spring device according to the invention.
- an embodiment of an inventive heat shield assembly as well as two examples of the invention spring means is fragmentary skiz ⁇ ed. 1 shows a section of the exemplary heat shield arrangement in the area of the spring device;
- FIG 2 shows a view of FIG 1 with the omission of the spring device
- FIG 3 shows the spring device for FIG 1
- FIG. 4 shows an exploded view of FIG. 3; 5 shows an alternative embodiment for a spring device analogous to the view of FIG. 3;
- FIG 6 is an exploded view of FIG 5.
- FIG 1 only shows a small part of a game at ⁇ exemplary heat shield assembly 01 in the area of an exemplary spring device 06.
- the elements of the heat shield assembly 01 can be seen with the omission of the spring device 06 is first of all, the support structure 03, an on ⁇ receiving bore is in the 03 04, which is threaded a through bore with mecanicge- in this case the receiving bore 04 is the 05th
- a heat shield element 11 is arranged wel ⁇ ches 11 is attached to the Federvor ⁇ direction 06 and thus to the support structure 03 by means of a fastening bolt 18th
- the heat shield element has a mounting base 15, in which a through hole 16 for receiving the fastening bolt 18 is located.
- the heat shield element 11 has a hot side 12 facing the combustion chamber ⁇ and a cold side 13 facing the support structure 03.
- a metallic heat shield element 11 is sketched, which 11 has a from the cold side 13 to the top 07 of the support ⁇ structure 03 extending mounting base 15. At ⁇ it is provided that the mounting base 15 rests on the spring device 06.
- the spring device 06 has, as outlined in FIGS. 3 and 4, a receiving sleeve 21 which, in this case, is designed with an external thread 24 for screwing into the receiving bore 04 of the supporting structure 03.
- the receiving sleeve 21 bil- Det integrally on the back facing away from the heat shield element 11 back the locking plate 22, so that the receptacle ⁇ sleeve 21 is in the manner of a heat shield element 11 open Top ⁇ fes.
- the securing plate 22 is furthermore provided with a through-bore 26.
- the receiving sleeve 21 further on the inside an internal ⁇ thread 25 has.
- the inner sleeve 31 is screwed in accordance with, is provided in this embodiment ⁇ example, that the top 07 of the receiving ⁇ sleeve 21 flush with the top 07 of the inner sleeve 31 from ⁇ closes.
- the inner sleeve 31 integrally forms the abutment plate 32, wherein furthermore the abutment plate 32 has the through hole 36 for receiving the fastening bolt 18.
- the spring element 49 for realizing the spring device is formed in this exemplary embodiment by way of example by a compression spring 49. It is obvious that, depending on the required spring forces as well as a plate spring package can be used.
- the printing plate 42 is in this case intra ⁇ half of the spring device 06 is axially movable, against the spring force of the Federele- ments 49 in the direction of the heat shield member 11 and opposite to the path through the securing plate 22 is limited.
- the pressure plate 42 is designed in the manner of a nut with a threaded bore 46, wherein two guide webs 43, which are arranged on the circumference, extend out of a circular disk. The guide webs 43 engage with slight play in the inner guide grooves 33 of the inner sleeve 31 a. It is easy to see that the spring device 06 can be assembled pre-assembled, so that a correspondingly biased spring assembly is available. Furthermore, it is obvious how a disassembly of the spring element 49 is still possible when fixing the receiving sleeve 21 in the support structure 03, in which the inner sleeve 31 is unscrewed from the receiving sleeve 21.
- an attachment of the inner sleeve 81 is provided in the receiving sleeve 71 by means of a screw, so that analogous to the receiving sleeve 71, an internal thread 75 and the Inner sleeve 81 has an external thread 84.
- the inner sleeve 81 additionallylie ⁇ quietly two inner guide grooves 83, which in contrast to the previous embodiment, the internal thread only ⁇ Lich to the guide groove 83 extends.
- the guide groove 83 extends radially through the wall of the inner sleeve 81st
- the spring element 99 is arranged in the inner sleeve 81, which abuts 99 on the side facing the heat shield element 11 corresponding to the on ⁇ position plate 82 and opposite to a pressure plate 92, 92 movement within the spring device 56 through the Backup plate 72 is limited.
- the printing plate 92 has ⁇ according to previous exporting approximately ⁇ for example a threaded hole 96 for attachment of the fastening bolt 18.
- the inner sleeve is cut 81 to the material ⁇ strength of the pressure plate 92 relative to the depth of the receiving sleeve ⁇ 71st Furthermore, the receiving sleeve 71 at its lower end opposite each outer guide grooves ⁇ 72, for which purpose the pressure plate 92 tonelie ⁇ extended extension guide webs 93 has.
- the guide webs 93 engage regardless of the presence of the inner sleeve 81 in the outer guide grooves 73 a.
- the spring device 56 is used and causes a displacement ⁇ tion of the pressure plate 92 against the spring force of Federele ⁇ ment 99 by the fastening bolt 18, the inner guide grooves 83 in the inner sleeve 81 to a rotation of the pressure plate 92 relative to the inner sleeve 81st the existing rotation of the pressure plate 92 relative to the receiving sleeve 71 due to the outer grooves 73 is given a rotation of the inner sleeve 81 relative to the receiving sleeve 71.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016211613.4A DE102016211613A1 (en) | 2016-06-28 | 2016-06-28 | Heat shield arrangement of a combustion chamber with disc spring package |
PCT/EP2017/064069 WO2018001696A1 (en) | 2016-06-28 | 2017-06-09 | Heat shield assembly of a combustion chamber having a disk spring set |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3446038A1 true EP3446038A1 (en) | 2019-02-27 |
EP3446038B1 EP3446038B1 (en) | 2020-01-08 |
Family
ID=59061991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17730123.1A Active EP3446038B1 (en) | 2016-06-28 | 2017-06-09 | Spring device for a heat shield assembly of a combustion chamber, and heat shield assembly having such a spring device |
Country Status (6)
Country | Link |
---|---|
US (1) | US10989412B2 (en) |
EP (1) | EP3446038B1 (en) |
CN (1) | CN109312922B (en) |
DE (1) | DE102016211613A1 (en) |
RU (1) | RU2708760C1 (en) |
WO (1) | WO2018001696A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019200593A1 (en) * | 2019-01-17 | 2020-07-23 | Siemens Aktiengesellschaft | Combustion chamber |
US11536454B2 (en) * | 2019-05-09 | 2022-12-27 | Pratt & Whitney Canada Corp. | Combustor wall assembly for gas turbine engine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19502730A1 (en) | 1995-01-28 | 1996-08-01 | Abb Management Ag | Ceramic lining |
WO1998013645A1 (en) | 1996-09-26 | 1998-04-02 | Siemens Aktiengesellschaft | Thermal shield component with cooling fluid recirculation and heat shield arrangement for a component circulating hot gas |
DE19751299C2 (en) * | 1997-11-19 | 1999-09-09 | Siemens Ag | Combustion chamber and method for steam cooling a combustion chamber |
US6942203B2 (en) * | 2003-11-04 | 2005-09-13 | General Electric Company | Spring mass damper system for turbine shrouds |
EP1533572A1 (en) * | 2003-11-24 | 2005-05-25 | Siemens Aktiengesellschaft | Gas turbine combustion chamber and gas turbine |
EP1533574A1 (en) | 2003-11-24 | 2005-05-25 | Siemens Aktiengesellschaft | Gas turbine combustion chamber with lining elements and method to apply or remove these elements |
EP1862740B1 (en) | 2006-05-31 | 2015-09-16 | Siemens Aktiengesellschaft | Combustion chamber wall |
ES2531099T3 (en) | 2009-06-09 | 2015-03-10 | Siemens Ag | Thermal shield element arrangement and procedure for mounting a thermal shield element |
EP2261564A1 (en) | 2009-06-09 | 2010-12-15 | Siemens Aktiengesellschaft | Heat shield element assembly with screw guiding means and method for installing same |
EP2591881A1 (en) | 2011-11-09 | 2013-05-15 | Siemens Aktiengesellschaft | Device, method and cast screw for safe exchange of heat shield panels of gas turbines |
EP2711630A1 (en) | 2012-09-21 | 2014-03-26 | Siemens Aktiengesellschaft | Device for cooling a support structure of a heat shield and heat shield |
ITMI20131177A1 (en) * | 2013-07-12 | 2015-01-13 | Ansaldo Energia Spa | REVERSIBLE FIXING DEVICE |
-
2016
- 2016-06-28 DE DE102016211613.4A patent/DE102016211613A1/en not_active Ceased
-
2017
- 2017-06-09 RU RU2019101956A patent/RU2708760C1/en active
- 2017-06-09 US US16/085,164 patent/US10989412B2/en active Active
- 2017-06-09 CN CN201780038524.1A patent/CN109312922B/en active Active
- 2017-06-09 EP EP17730123.1A patent/EP3446038B1/en active Active
- 2017-06-09 WO PCT/EP2017/064069 patent/WO2018001696A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102016211613A1 (en) | 2017-12-28 |
US20190107286A1 (en) | 2019-04-11 |
CN109312922A (en) | 2019-02-05 |
US10989412B2 (en) | 2021-04-27 |
EP3446038B1 (en) | 2020-01-08 |
CN109312922B (en) | 2020-10-02 |
WO2018001696A1 (en) | 2018-01-04 |
RU2708760C1 (en) | 2019-12-11 |
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