EP3183498A2 - Dispositif de raccordement comportant plusieurs tubes concentriques cintrés - Google Patents
Dispositif de raccordement comportant plusieurs tubes concentriques cintrésInfo
- Publication number
- EP3183498A2 EP3183498A2 EP15760219.4A EP15760219A EP3183498A2 EP 3183498 A2 EP3183498 A2 EP 3183498A2 EP 15760219 A EP15760219 A EP 15760219A EP 3183498 A2 EP3183498 A2 EP 3183498A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- ribs
- connection device
- connecting device
- tube
- 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
- 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
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
Definitions
- the invention relates to a device providing the connection of a turbomachine member, such as an injector of an aircraft turbomachine, with a fuel supply system.
- the invention relates more particularly to a connection device comprising several concentric tubes curved identically.
- An aircraft turbomachine comprises in particular a fuel supply system comprising an injector which is intended to inject a certain amount of fuel into the combustion chamber of the turbomachine.
- the amount of fuel injected depends on the operating conditions of the turbomachine.
- An injector in particular of the aeromechanical type, comprises a first, so-called primary, output which is used during a start-up phase of the turbomachine and a second, so-called secondary, output which is used after the starting of the turbomachine, and by which a large fuel flow is provided.
- the fuel system supplied several different fuel streams to the injector. Each of these different flows is associated with and supplies an output of the injector, that is to say a primary flow supplying the primary output, and a secondary flow supplying the secondary output.
- a connecting device is arranged between the injector and the supply system, to drive the different fuel flows through small spaces. Due to the small space available for the flow of fuel flow, the connection device comprises several concentric tubes which delimit several ducts through which fuel flows.
- a connection device comprises three tubes which delimit three concentric ducts.
- a first central duct is associated with the primary flow
- a second radially intermediate duct is associated with the secondary flow
- a third radially outer duct is associated with a fuel flow providing thermal protection of the primary and secondary fuel flows.
- the tubes of the connecting device are curved, or bent, to allow access to the location of the associated injector, taking into account the integration constraints on the turbomachine.
- the tubes are bent simultaneously.
- helical springs are installed between the tubes, to keep the tubes apart from one another during bending operations.
- the object of the invention is to propose a connection device making it possible to solve these problems.
- the invention proposes a device for connecting an organ to a system for supplying the fluid member, the connection device comprising a plurality of concentric tubes delimiting supply ducts for the organ, which are bent according to at least a direction, characterized in that it is made in one piece comprising at least the tubes.
- the connecting device comprises at least one radial rib extending between two adjacent tubes, which extends along the central curve of the tubes over the entire length of said adjacent tubes.
- each rib is made in one piece with said adjacent tubes.
- the connecting device comprises three concentric tubes and two sets of ribs the ribs of a first set of ribs connecting the outer surface of the radially inner tube to the inner surface of the radially intermediate tube and the ribs of the second set of ribs connecting the outer surface of the radially intermediate tube to the inner surface of the radially outer tube.
- fillets are formed at each radial end of each rib, at the connection of said radial end of the rib with the wall vis-à-vis a tube, associated.
- the connecting device comprises a connecting body of the tubes with a fluid injection system, and said body is made in one piece with the tubes and the ribs.
- the body comprises a fixing plate and fillets are formed at the connection between the outer surface of the radially outer tube and each surface of the plate.
- the connecting device is made by implementing a method of direct laser melting of metal.
- the invention also relates to a fluid supply circuit of a turbomachine member such as a fuel injector for an aircraft turbomachine combustion chamber, characterized in that it comprises a connection device according to the invention. .
- the invention also relates to an aircraft turbomachine comprising at least one member connected to a supply system of the fluid member by a connecting device according to the invention.
- Figure 1 is a schematic perspective view of a fuel supply circuit of an injector comprising a connecting device according to the invention
- Figure 2 is a radial sectional view of the connecting device showing the various tubes and the radial ribs;
- Figure 3 is an axial sectional view of the connecting device showing the body of the connecting device with the tubes.
- FIG. 1 shows a circuit 10 for supplying fuel to a fuel injector (not shown) for an aircraft turbomachine combustion chamber.
- This injector is designed to selectively inject two separate streams of fuel. These fuel flows are a primary flow, which is injected during a startup phase of the turbomachine and which is small, and a larger secondary flow, which is injected when the turbomachine is in operation.
- the supply circuit 10 also comprises a supply system 12 which distributes a single flow of fuel from a high pressure pump, in several different flows feeding the injector, and regulates the pressure and the flow of each of these. fuel flow.
- the supply system 12 is connected to the injector via a connection device 14.
- This connecting device 14 comprises a body 16 which is connected to the supply system 12 and a pipe 18 extending from the body 16 to the injector.
- the pipe 18 is shaped to circulate the different fuel flows towards the injector.
- the pipe 18 is divided into several concentric supply pipes 20, 22, 24, here three in number as can be seen in more detail in Figure 2.
- the pipe 18 comprises a first radially inner conduit 20 which is associated with the first fuel flow, a second radially intermediate conduit 22 which is associated with the second fuel flow and a third radially external conduit 24 which is associated with a stagnant fuel flow acting as a thermal screen.
- This stagnant fuel in the third conduit 24 is intended to protect the other two fuel streams from heat, and thus to avoid particular phenomena of coking the fuel inside the fuel injector.
- the pipe 18 consists of several concentric tubes 26, 28, 30, three in number, which delimit the ducts 20, 22, 24.
- the first duct 20 is thus delimited by the radially inner tube 26, the second duct 22 is delimited. by the radially inner tube 26 and the intermediate tube 28 and the third conduit 24 is delimited by the intermediate tube 28 and the radially outer tube 30.
- the tubes 26, 28, 30 are connected to the body 16 of the connection device 14.
- the pipe 18 is bent, to allow the integration of the connection device on the turbomachine taking into account the other components of the turbomachine located nearby.
- the concentric tubes 26, 28, 30 are also bent in at least one direction.
- the pipe 18 also has means for keeping the tubes 26, 28, 30 at a distance from each other, which consist of a plurality of radial ribs 32.
- Each rib 32 is bent identically to the pipe 18, that is to say it extends radially and along the central curve of the pipe 18 and the tubes 26, 28, 30, over the entire length of the tubes 26, 28, 30.
- the ribs 32 are located in the second duct 22 and in the third duct 24, thus forming two sets of ribs, the ribs 32 of the first set of ribs extending in the second duct 22, the ribs 32 of the second set of ribs 32 extending into the third conduit 24.
- each set of ribs has four ribs 32 distributed at 90 degrees. It will be understood that a set of ribs may comprise a different number of ribs 32 without departing from the invention.
- the ribs 32 of the two sets of ribs are arranged around the central curve of the pipe 18 with two adjacent ribs 32 aligned.
- the ribs 32 are all of the same thickness. According to an alternative embodiment, some ribs 32 have a thickness different from the thickness of the other ribs 32, to locally modify the mechanical strength to the pipe 18. Also, the thickness of a rib may vary along the central curve of the pipeline 18.
- Each radial end of each rib 32 comprises a surplus of material forming leave 34 at its connection with the associated face of a tube 26, 28, 30.
- These leaves 34 are intended to remove sharp edges that may locally weaken the connection between a rib and the wall vis-à-vis a tube 26, 28, 30.
- the body 16 of the connecting device 14 comprises a cylindrical portion 36 which is intended to receive a complementary part of the supply system 12 and which communicates separately with each of the ducts 20, 22, 24.
- the body 16 includes a mounting plate 38 of the connecting device 14 on the turbomachine.
- This mounting plate 38 extends around the radially outer tube 30 and fillets 40 are formed at the connection between the fixing plate 38 and the outer tube 30.
- the tubes 26, 28, 30 are all made in one piece of the same material.
- the ribs 32 are made in one piece with the tubes 26, 28, 30.
- the body 16 of the connecting device is made in one piece with the tubes 26, 28, 30 and the ribs 32.
- the entire connecting device 14 is made in one piece.
- the connecting device 14 is produced by the implementation of a so-called direct metal laser melting process.
- a so-called direct metal laser melting process consists of distributing a uniform layer of metal powder by means of a re-coating device, then melting this layer at given locations corresponding to a section of the connection device in a highly controlled inert atmosphere. These operations are repeated several times until the connection device 14 is obtained. Once completed, the connection device 14 is removed from the powder bed and subjected to heat treatment and finishing.
- connection device 14 undergoes no formatting step that would be complex to implement and may weaken locally.
- All parts of the connecting device 14 are made of a single material which is for example a Cobalt Chrome Molybdenum alloy or an alloy known under the name Inconel 718.
- Such an embodiment of the connecting device 14 has the additional advantage that no sealing means is required between the different tubes 26, 28, 30 and the body 16 of the connecting device, thus reducing the risk of leakage. fueling or accidental communication of two ducts 20, 22, 24.
- the strength of the connecting device 14 is improved since it is possible to adapt the thickness of a tube 26, 28, 30 or a rib 32 depending on the constraints that he / she undergoes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1457895A FR3025017B1 (fr) | 2014-08-20 | 2014-08-20 | Dispositif de raccordement comportant plusieurs tubes concentriques cintres |
| PCT/FR2015/052224 WO2016027034A2 (fr) | 2014-08-20 | 2015-08-19 | Dispositif de raccordement comportant plusieurs tubes concentriques cintres |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3183498A2 true EP3183498A2 (fr) | 2017-06-28 |
| EP3183498B1 EP3183498B1 (fr) | 2021-07-07 |
Family
ID=52003975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15760219.4A Active EP3183498B1 (fr) | 2014-08-20 | 2015-08-19 | Dispositif de raccordement comportant plusieurs tubes concentriques cintrés |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11022312B2 (fr) |
| EP (1) | EP3183498B1 (fr) |
| CN (1) | CN106662330A (fr) |
| BR (1) | BR112017003212B1 (fr) |
| CA (1) | CA2958025C (fr) |
| FR (1) | FR3025017B1 (fr) |
| RU (1) | RU2703285C2 (fr) |
| WO (1) | WO2016027034A2 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3078142B1 (fr) | 2018-02-22 | 2020-03-20 | Safran Aircraft Engines | Chambre de combustion comportant deux types d'injecteurs dans lesquels les organes d'etancheite ont un seuil d'ouverture different |
| FR3091332B1 (fr) | 2018-12-27 | 2021-01-29 | Safran Aircraft Engines | Nez d’injecteur pour turbomachine comprenant une vrille secondaire de carburant à section évolutive |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2759836C2 (de) * | 1976-08-27 | 1983-05-05 | Mitsubishi Denki K.K., Tokyo | Verfahren zum Lichtbogen-Verbindungsschweißen |
| US4735044A (en) * | 1980-11-25 | 1988-04-05 | General Electric Company | Dual fuel path stem for a gas turbine engine |
| IL70892A (en) * | 1984-02-07 | 1988-08-31 | Rinkewich Isaac | Water irrigation apparatus and pipe construction particularly useful therein |
| DE19712591A1 (de) * | 1997-03-26 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils |
| US5918628A (en) * | 1997-06-17 | 1999-07-06 | Parker-Hannifin Corporation | Multi-stage check valve |
| CN1232721C (zh) * | 1998-12-28 | 2005-12-21 | 陈伯禄 | 燃气蒸汽并效涡轮引擎 |
| US6358041B1 (en) * | 2000-04-21 | 2002-03-19 | Eastman Chemical Company | Threaded heat shield for burner nozzle face |
| US6915638B2 (en) * | 2002-03-28 | 2005-07-12 | Parker-Hannifin Corporation | Nozzle with fluted tube |
| CN2597804Y (zh) * | 2002-10-15 | 2004-01-07 | 许文芳 | 一种带有弹性压紧垫的煤气管道连接件 |
| GB2440546A (en) * | 2006-08-04 | 2008-02-06 | Rolls Royce Plc | Fluid carrying arrangement and its manufacture using a solid freeform fabrication process |
| US8443608B2 (en) * | 2008-02-26 | 2013-05-21 | Delavan Inc | Feed arm for a multiple circuit fuel injector |
| US8061142B2 (en) * | 2008-04-11 | 2011-11-22 | General Electric Company | Mixer for a combustor |
| US8806871B2 (en) * | 2008-04-11 | 2014-08-19 | General Electric Company | Fuel nozzle |
| US7832377B2 (en) * | 2008-09-19 | 2010-11-16 | Woodward Governor Company | Thermal protection for fuel injectors |
| US20110247590A1 (en) * | 2010-04-07 | 2011-10-13 | Delavan Inc | Injectors utilizing lattice support structure |
| CN101812404B (zh) * | 2010-04-27 | 2013-09-04 | 惠识瑶 | 罐外循环的流化床式细胞反应器及培养动物细胞方法 |
| CN102654079A (zh) * | 2012-04-18 | 2012-09-05 | 周耀瑜 | 间歇冲气涡轮发动机技术方案 |
| US20130312946A1 (en) * | 2012-05-24 | 2013-11-28 | Kellogg Brown & Root Llc | Methods and Systems for Cooling Hot Particulates |
| FR3003013B1 (fr) | 2013-03-05 | 2016-07-29 | Snecma | Dispositif de dosage compact pour injecteur a deux circuits de carburant, de preference pour turbomachine d'aeronef |
| US20160003157A1 (en) * | 2014-07-03 | 2016-01-07 | United Technologies Corporation | Additive manufactured tube assembly |
| US9915480B2 (en) * | 2014-07-03 | 2018-03-13 | United Technologies Corporation | Tube assembly |
-
2014
- 2014-08-20 FR FR1457895A patent/FR3025017B1/fr active Active
-
2015
- 2015-08-19 BR BR112017003212-0A patent/BR112017003212B1/pt not_active IP Right Cessation
- 2015-08-19 WO PCT/FR2015/052224 patent/WO2016027034A2/fr not_active Ceased
- 2015-08-19 EP EP15760219.4A patent/EP3183498B1/fr active Active
- 2015-08-19 RU RU2017108764A patent/RU2703285C2/ru active
- 2015-08-19 US US15/504,387 patent/US11022312B2/en active Active
- 2015-08-19 CA CA2958025A patent/CA2958025C/fr active Active
- 2015-08-19 CN CN201580043279.4A patent/CN106662330A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| RU2703285C2 (ru) | 2019-10-16 |
| US20170234539A1 (en) | 2017-08-17 |
| RU2017108764A3 (fr) | 2019-02-21 |
| EP3183498B1 (fr) | 2021-07-07 |
| CN106662330A (zh) | 2017-05-10 |
| US11022312B2 (en) | 2021-06-01 |
| FR3025017A1 (fr) | 2016-02-26 |
| CA2958025A1 (fr) | 2016-02-25 |
| CA2958025C (fr) | 2023-05-16 |
| WO2016027034A2 (fr) | 2016-02-25 |
| BR112017003212A2 (pt) | 2017-11-21 |
| FR3025017B1 (fr) | 2016-09-30 |
| RU2017108764A (ru) | 2018-09-23 |
| WO2016027034A3 (fr) | 2016-06-23 |
| BR112017003212B1 (pt) | 2023-05-02 |
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