EP2856036A2 - Mantelring einer tubomaschinenbrennkammer - Google Patents
Mantelring einer tubomaschinenbrennkammerInfo
- Publication number
- EP2856036A2 EP2856036A2 EP13728462.6A EP13728462A EP2856036A2 EP 2856036 A2 EP2856036 A2 EP 2856036A2 EP 13728462 A EP13728462 A EP 13728462A EP 2856036 A2 EP2856036 A2 EP 2856036A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ferrule
- dilution
- bores
- combustion chamber
- platelets
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 238000010790 dilution Methods 0.000 claims abstract description 32
- 239000012895 dilution Substances 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 10
- 235000012431 wafers Nutrition 0.000 claims description 11
- 238000007865 diluting Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 210000003462 vein Anatomy 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03041—Effusion cooled combustion chamber walls or domes
-
- 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
- F23R2900/03042—Film cooled combustion chamber walls or domes
-
- 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
- F23R2900/03044—Impingement cooled combustion chamber walls or subassemblies
-
- 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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/06—Arrangement of apertures along the flame tube
-
- 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
- F23R3/50—Combustion chambers comprising an annular flame tube within an annular casing
Definitions
- the present invention relates to a turbomachine combustion chamber shell.
- the ferrule in question here delimits a flame tube where the combustion takes place, and which is therefore subjected to an important heating on its inner face, while its outer face is traversed by a flow of fresh gas originating from the compressors. of the turbomachine and which mixes with the combustion gases downstream of the shell before passing into the turbines.
- Such a ferrule is traversed by several kinds of drilling, including relatively large diameter dilution holes intended to let part of the external flow into the flame tube to improve the composition of the combustion mixture, and holes more thin and distributed over most of the ferrule surface, to allow also an air intake of the external flow, but whose effect is to protect the ferrule of warming, forming a flowing stream downstream on the inner face of the shell and therefore a boundary layer cooler than the flue gas.
- This boundary layer is reformed badly immediately downstream of the large-diameter holes, which break the grazing flow, and that the corresponding parts of the ferrule, subjected almost entirely to heating, are subject to deformations and stresses resulting from differential expansion, that can create creeks.
- EP-A-1,703,207 discloses a combustion chamber on which the invention can be implanted. And the above problems are mentioned in the French patent application registered under the number 11 53232 which exposes a modification of the conventional arrangement of the ferrule for reforming the boundary layer immediately downstream of the large-diameter bores and thus relieving the ferrule . Another solution is however proposed with the present invention.
- a turbomachine combustion chamber shell comprising dilution bores and ventilation bores surrounding the dilution holes and finer and more numerous than them, characterized in that it comprises platelets extending over and around the dilution bores on an outer face of the ferrule, the ferrule is devoid of ventilation holes at portions above the platelets, the plates each comprising a flange for attachment to the ferrule and an orifice extending over one of the respective dilution bores, and the wafers are pierced by bores directed towards said portions of the ferrule.
- the essential effect obtained is that the pressure that prevails around the ferrule causes air to penetrate through the holes of the wafer, in jets that strike the outer face of the ferrule and produce at this point the desired cooling, with a greater intensity than ventilation holes arranged through the shell, that the air passes very quickly. Instead, the air sucked under the wafer flows over the outer face of the ferrule after reaching it, moving towards the dilution piercing, and this flow time causes greater heat removal. .
- the rather low speed with which it is then animated can allow it to take up quite easily a tangent direction downstream, which will help to restore the boundary layer on the inner face of ferrule and will further improve ventilation.
- the platelets may be parallel to or inclined to the shell in an axial direction of the shell.
- the piercings of the platelets are advantageously perpendicular to the ferrule, but they can also be placed obliquely; all these arrangements are to be decided in each design.
- the platelets extend more in the downstream direction of the ferrule than in other directions from the centers of the dilution bores, since the portions of the ferrule which are subjected to intense heating are precisely downstream of the ferrule. these holes.
- the platelets may, however, undergo shrinkage in this downstream direction of the ferrule, since the boundary layer is reconstituted in the same form, bypassing the dilution bores.
- the plates each comprise an inner rim surrounding the respective orifice and extending towards the respective dilution passage, which allows to channel both the air sucked directly by the dilution holes passing. by the orifice of the wafer, and the air sucked by the holes of the wafer and blowing on the shell, which then passes around this inner edge.
- Another aspect of the invention is a turbomachine combustion chamber comprising such a ferrule.
- FIG. 1 is a general view of a turbomachine combustion chamber and its ferrule
- FIG. 1 A turbomachine combustion chamber where the invention may be present is shown schematically in FIG. 1. It will be recalled that these combustion chambers are annular around an axis of the turbomachine, so that FIG. 1 is only half a cubic meter. cuts along the axis.
- a fairing 1 comprises an outer shell 2, an inner shell 3, both generally conical and concentric with each other, and an annular chamber bottom 4 joining the ferrules 2 and 3.
- the internal volume of the combustion chamber, forming a tube with flame 16 is delimited by the ferrules 2 and 3 and the chamber bottom 4 and opens on the opposite side to the chamber bottom 4 by an opening 5.
- the combustion chamber is surrounded by an outer casing 6 and an inner casing 7 which delimit a flow vein 10 that the fairing 1 separates in two outer vein portions 8 and 9 which circumvent and run along the fairing 1.
- the air flow stream 10 comes from a nozzle 11 located opposite an opening 12 formed between rear fairings 13 and 14 of the ferrules 2 and 3 (in this description, "back” and “front” are considered with reference to the direction of the airflow).
- Fuel injectors 15 extend through the outer casing 6, the opening 12 and the chamber bottom 4 into the flame tube 16. Candles 17 also pass through the outer casing 6 at the front of the fuel injectors 15 and also through the outer shell 1 to flush in the flame tube 16. The largest part of the air flow thus borrows the veins 8 and 9, even if a portion penetrates under the shrouds 13 and 14 by the opening 12.
- the ferrules 2 and 3 are traversed by numerous holes, including ventilation holes 38 thin and numerous and diluting holes 39 of larger diameter, less numerous and distributed over a circle or a small number of circles.
- ventilation holes 38 thin and numerous and diluting holes 39 of larger diameter, less numerous and distributed over a circle or a small number of circles.
- the common effect of these holes is to let air from the veins 8 and 9 into the flame tube 16 at lower pressure for various purposes.
- the invention may be implemented on one or other of the ferrules 2 and 3.
- Pads 40 are disposed on the outer face of the shell 2 or 3 and around the dilution holes 39. They each comprise a main portion 41 extending above the ferrule 2 or 3, an outer rim 42 surrounding the main portion 41 and attached to the ferrule 2 or 3, an orifice 43 extending in front of the respective but smaller diameter dilution bore 39, an inner rim 44 surrounding the orifice 43 and extending into most of the depth of the dilution bore 39, and the bores 45 passing through the main portion 41 and opening in front of a portion opposite the shell 2 or 3, which is devoid of the ventilation holes 38 the.
- the plate 40 thus delimits a chamber 49 almost closed in front of the ferrule 2 or 3 of the respective dilution bore 39. It can be seen in FIG. 3 that the wafer 40 has a generally triangular shape extending more in the downstream direction of the flow while becoming narrower and narrower, so as to correspond as much as possible to the zone. of ferrule 2 or 3 where the cracks can appear.
- the dilution piercing 39 is provided with attachment sectors 46 projecting towards the center of said bore, which come to touch and grip the inner rim 44. This inner rim 44 and the attachment sectors 46 delimit air flow sectors having through the holes 45 of the plates 40, including here two lateral sectors 47 symmetrical with respect to an axial direction of the ferrule 2 or 3 and a downstream sector 48.
- the centers 01 and 02 of the inner flange 44 and drilling 39 are axially offset, so that the sectors 47 or 48 have an irregular shape and the downstream sector 48 is wider, which promotes the flow of the chamber 49 by the downstream sector 48 and the reconstruction of a ventilation limit layer downstream of dilution drilling 39.
- the specific flow provided by the wafer 40 is as follows. Air from the flow of the vein 8 or 9 under excess pressure is blown into the chamber 49 through the holes of the plates 45 and refreshes the ferrule 2 or 3 around the respective dilution bore 39, and in particular the downstream portion. of it, by its outer face. This air then flows into the flame tube 16 through the flow sectors 47 and 48 and in particular through the latter. Upon entering the flame tube 16, its flow can quickly become axial downstream of the combustion chamber and reconstitute a boundary layer in the aforementioned zone of the shell 2 or 3 downstream of the dilution bore 38 and further contributes to protect her.
- the main portions 41 of the plates 40 may or may not be parallel to the portion facing the shell 2 or 3, and the holes 45 perpendicular or otherwise to this portion.
- the main portions 41 may in particular be inclined in the axial direction of the shell 2 or 3, according to the contour 41 ', to better intercept the flow air by creating a larger obstacle.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1254847A FR2991028B1 (fr) | 2012-05-25 | 2012-05-25 | Virole de chambre de combustion de turbomachine |
PCT/FR2013/051117 WO2013175126A2 (fr) | 2012-05-25 | 2013-05-23 | Virole de chambre de combustion de turbomachine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2856036A2 true EP2856036A2 (de) | 2015-04-08 |
EP2856036B1 EP2856036B1 (de) | 2018-09-12 |
Family
ID=46754628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13728462.6A Active EP2856036B1 (de) | 2012-05-25 | 2013-05-23 | Mantelring einer tubomaschinenbrennkammer |
Country Status (9)
Country | Link |
---|---|
US (1) | US9377200B2 (de) |
EP (1) | EP2856036B1 (de) |
CN (1) | CN104520647B (de) |
BR (1) | BR112014027018B1 (de) |
CA (1) | CA2871923C (de) |
FR (1) | FR2991028B1 (de) |
IN (1) | IN2014DN08528A (de) |
RU (1) | RU2626876C2 (de) |
WO (1) | WO2013175126A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2730844B1 (de) * | 2012-11-13 | 2018-04-18 | Rolls-Royce Deutschland Ltd & Co KG | Brennkammerschindel einer Gasturbine sowie Verfahren zu deren Herstellung |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015100346A1 (en) | 2013-12-23 | 2015-07-02 | United Technologies Corporation | Multi-streamed dilution hole configuration for a gas turbine engine |
US10451281B2 (en) | 2014-11-04 | 2019-10-22 | United Technologies Corporation | Low lump mass combustor wall with quench aperture(s) |
US10386072B2 (en) * | 2015-09-02 | 2019-08-20 | Pratt & Whitney Canada Corp. | Internally cooled dilution hole bosses for gas turbine engine combustors |
US20180283689A1 (en) * | 2017-04-03 | 2018-10-04 | General Electric Company | Film starters in combustors of gas turbine engines |
US11187412B2 (en) | 2018-08-22 | 2021-11-30 | General Electric Company | Flow control wall assembly for heat engine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1052475A (fr) * | 1952-03-15 | 1954-01-25 | Snecma | Chambres de combustion convenant en particulier aux turbines à gaz |
GB777782A (en) | 1955-06-24 | 1957-06-26 | Ici Ltd | Purification of terephthalic acid |
US4132066A (en) | 1977-09-23 | 1979-01-02 | United Technologies Corporation | Combustor liner for gas turbine engine |
US4875339A (en) * | 1987-11-27 | 1989-10-24 | General Electric Company | Combustion chamber liner insert |
US4887432A (en) * | 1988-10-07 | 1989-12-19 | Westinghouse Electric Corp. | Gas turbine combustion chamber with air scoops |
FR2855249B1 (fr) * | 2003-05-20 | 2005-07-08 | Snecma Moteurs | Chambre de combustion ayant une liaison souple entre un fond de chambre et une paroi de chambre |
RU2260748C2 (ru) * | 2003-12-02 | 2005-09-20 | Открытое акционерное общество "Авиадвигатель" | Камера сгорания газотурбинного двигателя |
FR2881813B1 (fr) * | 2005-02-09 | 2011-04-08 | Snecma Moteurs | Carenage de chambre de combustion de turbomachine |
FR2892180B1 (fr) * | 2005-10-18 | 2008-02-01 | Snecma Sa | Amelioration des perfomances d'une chambre de combustion par multiperforation des parois |
FR2899315B1 (fr) | 2006-03-30 | 2012-09-28 | Snecma | Configuration d'ouvertures de dilution dans une paroi de chambre de combustion de turbomachine |
US8171634B2 (en) * | 2007-07-09 | 2012-05-08 | Pratt & Whitney Canada Corp. | Method of producing effusion holes |
US8789372B2 (en) * | 2009-07-08 | 2014-07-29 | General Electric Company | Injector with integrated resonator |
-
2012
- 2012-05-25 FR FR1254847A patent/FR2991028B1/fr active Active
-
2013
- 2013-05-23 CN CN201380023683.6A patent/CN104520647B/zh active Active
- 2013-05-23 BR BR112014027018-0A patent/BR112014027018B1/pt active IP Right Grant
- 2013-05-23 US US14/394,214 patent/US9377200B2/en active Active
- 2013-05-23 RU RU2014152849A patent/RU2626876C2/ru active
- 2013-05-23 EP EP13728462.6A patent/EP2856036B1/de active Active
- 2013-05-23 IN IN8528DEN2014 patent/IN2014DN08528A/en unknown
- 2013-05-23 CA CA2871923A patent/CA2871923C/fr active Active
- 2013-05-23 WO PCT/FR2013/051117 patent/WO2013175126A2/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013175126A2 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2730844B1 (de) * | 2012-11-13 | 2018-04-18 | Rolls-Royce Deutschland Ltd & Co KG | Brennkammerschindel einer Gasturbine sowie Verfahren zu deren Herstellung |
US10174947B1 (en) | 2012-11-13 | 2019-01-08 | Rolls-Royce Deutschland Ltd & Co Kg | Combustion chamber tile of a gas turbine and method for its manufacture |
Also Published As
Publication number | Publication date |
---|---|
US9377200B2 (en) | 2016-06-28 |
CA2871923A1 (fr) | 2013-11-28 |
BR112014027018A2 (pt) | 2017-06-27 |
WO2013175126A3 (fr) | 2014-04-24 |
RU2626876C2 (ru) | 2017-08-02 |
CA2871923C (fr) | 2020-02-11 |
EP2856036B1 (de) | 2018-09-12 |
BR112014027018B1 (pt) | 2021-05-25 |
FR2991028B1 (fr) | 2014-07-04 |
CN104520647B (zh) | 2016-02-24 |
FR2991028A1 (fr) | 2013-11-29 |
IN2014DN08528A (de) | 2015-05-15 |
RU2014152849A (ru) | 2016-07-20 |
US20150059344A1 (en) | 2015-03-05 |
WO2013175126A2 (fr) | 2013-11-28 |
CN104520647A (zh) | 2015-04-15 |
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