EP3027854A1 - Carter de turbomachine et procédé de fabrication - Google Patents
Carter de turbomachine et procédé de fabricationInfo
- Publication number
- EP3027854A1 EP3027854A1 EP14755874.6A EP14755874A EP3027854A1 EP 3027854 A1 EP3027854 A1 EP 3027854A1 EP 14755874 A EP14755874 A EP 14755874A EP 3027854 A1 EP3027854 A1 EP 3027854A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sectors
- manufacturing
- assembly
- strips
- casing
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
-
- 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
- F05D2230/10—Manufacture by removing material
-
- 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
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/21—Manufacture essentially without removing material by casting
-
- 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
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
-
- 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
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
- F05D2300/133—Titanium
Definitions
- the invention relates to a turbomachine casing and a method of manufacturing a turbomachine casing.
- FIG. 1 represents a turbomachine upstream part comprising a fan 100, surrounded by a fan casing 101.
- the fan casing 100 is extended by an intermediate casing 102 comprising a ring 103 or ferrule.
- the ring 103 of the intermediate housing 102 comprises a plurality of fastening elements, which allow the fastening of members of the turbomachine on the housing 102, such as the accessory drive module (or ADM for "Accessory Drive Module” ).
- Such an intermediate casing is for example described in the patent FR2925120 or in the patent application FR1262269.
- the intermediate casing 102 is conventionally manufactured by machining in the mass of a stock of aluminum, steel or titanium. The components to be assembled are subsequently reported on the part resulting from machining the stock.
- fasteners are necessarily reported on the part, which increases the weight due to the mass of washers, screws, and additional flanges for assembly.
- the invention proposes a method of manufacturing a turbomachine casing, characterized in that it comprises the steps of: manufacturing a plurality of sectors, at least part of the sectors being made by casting and comprising on their surface fastening elements obtained during the foundry step, and
- assembly strips are obtained at the ends of the sectors through which the sectors may be assembled, and / or fastening elements;
- the method comprises the step of machining the outer face of the assembly strips before the joining of the sectors;
- the method comprises the step of assembling the sectors by welding or bolting;
- the method comprises the step of, after the assembly of the sectors:
- the invention further relates to a turbomachine casing, characterized in that it comprises a ring consisting of an assembly of a plurality of sectors, at least part of the sectors being manufactured in one piece with elements of attaches to their surface by a foundry process.
- the sectors are made of titanium.
- the sectors comprise joining strips at their ends, through which the sectors are assembled.
- the assembly strips have a constant width, and / or the assembly strips have a height whose profile follows the evolution of the thickness profile of the ends of the sectors.
- the invention relates to a turbomachine comprising a fan and a casing as described above.
- the invention offers many advantages.
- the solution reduces the number and complexity of the machining steps required to manufacture the crankcase.
- the housing comprising a plurality of sectors of smaller size than the housing itself, the manufacturing operations are therefore achievable by a greater number of foundries.
- the small size of the sectors makes it possible to improve the foundry shape tolerances.
- FIG. 1 is a partial view of a turbomachine
- FIG. 2 is a representation of a sector of the housing of the type equipped with fixing screeds
- FIG. 3 is a representation of another type of crankcase sector;
- FIGS 4A and 4B are a representation of the assembly of the crankcase sectors;
- FIG. 5 is a representation of the housing after a subsequent machining step
- FIG. 6 is a schematic representation of a crankcase manufacturing process.
- FIGS are represented in the figures different stages and elements allowing the manufacture of a casing 1 of turbomachine.
- casing 1 may for example be the casing 1 said intermediate which is juxtaposed to the fan casing in the turbomachine, as already illustrated in Figure 1.
- the solution also applies to other casings of the turbomachine (fan housing, etc.).
- a plurality of sectors 2, such as those illustrated in Figures 2 and 3 are made by casting (step E1 - metal forming process which comprises pouring a liquid metal into a mold to reproduce, after cooling, a given piece).
- the sectors 2 comprise on their surface fastening elements 3.
- These fastening elements 3 comprise in particular bosses or clevises for fixing axes, flanges, arms, or any mechanical part of the turbomachine connected to the casing 1.
- the fastening elements 3 are manufactured during the casting step.
- the sectors 2 are made in one piece with the fastening elements 3 on their surface, which avoids steps of bolting and additional parts report.
- the sectors 2 comprise ribs 7 serving as stiffeners of the structure. These ribs 7 are also manufactured during the casting step.
- sectors 2 After manufacturing sectors 2 by casting, they are assembled end to end so as to form a ring 5 of the housing 1.
- the assembly of sectors 2 can for example be done by welding. Other assembly operations are possible, for example by bolting sectors 2 to each other.
- the assembly comprises a hot forming operation making it possible to improve the circularity of the ring 5 of the casing 1.
- part of the sectors 2 to be assembled is manufactured according to a different manufacturing method, such as rolling, in particular of circular type.
- the manufacture of the sectors 2 may include obtaining strips 8 assembly at the ends of the sectors 2, by which the sectors 2 are assembled. These strips 8 are obtained by integration by foundry or material coming with the sectors 2.
- step E2 A machining of the raw outer face 8a of the strips 8 is performed before the joining of the sectors.
- the strips 8 make it possible in particular to facilitate the welding or bolting operations of the sectors 2 between them, and to reduce the variations in thickness at the ends of the sectors 2.
- a simple form is that of a parallelepiped.
- the assembly strips 8 have a constant width L.
- the width is the size of the assembly strip 8 along the axis tangential to the ring 5 formed by the sectors 2 (see Figure 2).
- the height H of the assembly strips 8 can be constant or variable.
- the height H has a variation whose amplitude is limited (in particular, the abrupt variations, of the stair step type, are to be avoided), in order to facilitate the welding of the strips 8 between them.
- the height H has a profile which follows the evolution of the thickness profile of the ends of the sectors 2.
- the profile of the height H is not strictly identical to the thickness profile of the ends of the sectors 2, so as not to have variations in the form of steps, but follows the trend.
- Sectors 2 are angular sectors, the angular extent of which varies according to various criteria such as the desired number of sectors of the ring, the diameter of the casing to be manufactured, the manufacturing tolerances of the foundry operation, and the position of the attachment elements 3 on sectors 2.
- the angular extent of the sectors 2 is chosen so that the fastening strips 8 at their ends do not come into contact with the fastening elements 3 of the sectors 2.
- the sectors 2 are machined after assembly so as to form complementary fastening elements 12 on the surface of the sectors 2.
- These complementary fixing elements 12 are for example elements whose manufacturing tolerances required are fine and can not be reached during the casting step. These are, for example, openings made in the ribs 7 of the sectors 2.
- the sectors 2 are in titanium. Titanium is known for its good mechanical strength and good fire resistance. It becomes possible to significantly reduce the thicknesses of flanges or bodies.
- titanium has a higher cost than aluminum and has problems of machinability, the cost of choosing titanium as raw material is low, aluminum also having molding problems. during foundry operations.
- the preforming of the sectors 2 by casting also makes it possible to reduce the number and the complexity of the machining steps, which further reduces the associated costs.
- the solution applies to any turbomachine casing. It applies in particular to the intermediate casing of the turbomachine, downstream of the fan casing according to the flow direction of the flow.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Supercharger (AREA)
- Manufacture Of Motors, Generators (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1357487A FR3008912B1 (fr) | 2013-07-29 | 2013-07-29 | Carter de turbomachine et procede de fabrication |
| PCT/FR2014/051935 WO2015015101A1 (fr) | 2013-07-29 | 2014-07-25 | Carter de turbomachine et procédé de fabrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3027854A1 true EP3027854A1 (fr) | 2016-06-08 |
| EP3027854B1 EP3027854B1 (fr) | 2017-09-27 |
Family
ID=49620082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14755874.6A Active EP3027854B1 (fr) | 2013-07-29 | 2014-07-25 | Carter de turbomachine et procédé de fabrication |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US10337352B2 (fr) |
| EP (1) | EP3027854B1 (fr) |
| JP (1) | JP6080245B2 (fr) |
| CN (1) | CN105431615B (fr) |
| BR (1) | BR112016001910A2 (fr) |
| CA (1) | CA2918702C (fr) |
| FR (1) | FR3008912B1 (fr) |
| RU (1) | RU2672237C2 (fr) |
| WO (1) | WO2015015101A1 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3050670B1 (fr) * | 2016-04-28 | 2018-11-23 | Safran Aircraft Engines | Virole et procede de fabrication d'un carter comprenant une virole |
| US10927703B2 (en) | 2016-09-16 | 2021-02-23 | General Electric Company | Circumferentially varying thickness composite fan casing |
| CN107052723B (zh) * | 2017-04-19 | 2019-12-10 | 陕西华通机电制造有限公司 | 一种发动机壳体的加工工艺 |
| US10876429B2 (en) * | 2019-03-21 | 2020-12-29 | Pratt & Whitney Canada Corp. | Shroud segment assembly intersegment end gaps control |
| CN110497162B (zh) * | 2019-09-23 | 2021-03-05 | 无锡航亚科技股份有限公司 | 一种航空发动机机匣的加工方法 |
| FR3135746B1 (fr) * | 2022-05-20 | 2024-04-12 | Safran Aircraft Engines | Ensemble propulsif pour un aeronef |
| FR3135748B1 (fr) * | 2022-05-20 | 2026-04-03 | Safran Aircraft Engines | Ensemble propulsif pour un aeronef |
| FR3135749B1 (fr) * | 2022-05-20 | 2024-05-03 | Safran Aircraft Engines | Ensemble propulsif pour un aeronef |
| FR3136009A1 (fr) * | 2022-05-25 | 2023-12-01 | Safran Aircraft Engines | Procede de fabrication d’un carter annulaire de turbomachine avec bossages |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1061675A (en) * | 1911-12-18 | 1913-05-13 | Gen Electric | Diaphragm and nozzle construction for turbines. |
| US3303998A (en) * | 1966-07-18 | 1967-02-14 | Gen Electric | Stator casing |
| US4208774A (en) * | 1978-11-27 | 1980-06-24 | United Technologies Corporation | Process for welding flanges to a cylindrical engine casing having a plurality of spaced rails and ribs |
| US5516257A (en) * | 1994-04-28 | 1996-05-14 | United Technologies Corporation | Aircraft fan containment structure restraint |
| US6439842B1 (en) * | 2000-03-29 | 2002-08-27 | General Electric Company | Gas turbine engine stator case |
| JP3831265B2 (ja) * | 2002-01-21 | 2006-10-11 | 本田技研工業株式会社 | 静翼構造体の製造方法 |
| US6941633B2 (en) * | 2003-08-28 | 2005-09-13 | United Technologies Corporation | Tooling provision for split cases |
| DE102006002121A1 (de) * | 2005-02-23 | 2006-08-31 | Alstom Technology Ltd. | Trennflanschverschraubung für Turbinengehäuse mit eingegossenem Schaufelträger |
| FR2887931B1 (fr) * | 2005-06-29 | 2007-08-17 | Snecma | Dispositif de support et de logement de servitudes dans un turboreacteur a double flux |
| US8950069B2 (en) * | 2006-12-29 | 2015-02-10 | Rolls-Royce North American Technologies, Inc. | Integrated compressor vane casing |
| FR2925120B1 (fr) * | 2007-12-18 | 2010-02-19 | Snecma | Extension de carter intermediaire pour turboreacteur d'aeronef, comprenant une rainure annulaire sectorisee de reception des capots de nacelle |
| FR2933130B1 (fr) * | 2008-06-25 | 2012-02-24 | Snecma | Carter structural pour turbomachine |
| FR2935623B1 (fr) * | 2008-09-05 | 2011-12-09 | Snecma | Procede de fabrication d'une piece thermomecanique de revolution circulaire comportant un substrat porteur a base de titane revetu d'acier ou superalliage, carter de compresseur de turbomachine resistant au feu de titane |
| FR2938292B1 (fr) * | 2008-11-07 | 2010-12-24 | Snecma | Bride annulaire de fixation d'un element de rotor ou de stator dans une turbomachine |
| EP2211023A1 (fr) * | 2009-01-21 | 2010-07-28 | Siemens Aktiengesellschaft | Distributeur pour turbomachine avec structure support d'aubes directrices segmentée |
| US8142150B2 (en) * | 2009-03-06 | 2012-03-27 | General Electric Company | Alignment device for gas turbine casings |
| US9114882B2 (en) * | 2010-10-26 | 2015-08-25 | United Technologies Corporation | Fan case and mount ring snap fit assembly |
| US20120027581A1 (en) * | 2010-08-02 | 2012-02-02 | General Electric Company | Reinforced concrete gas turbine outer case |
| FR2978495B1 (fr) * | 2011-07-25 | 2013-08-02 | Snecma | Carter, notamment carter intermediaire, de turboreacteur |
| US8895887B2 (en) * | 2011-08-05 | 2014-11-25 | General Electric Company | Resistance weld repairing of casing flange holes |
| JP5946543B2 (ja) * | 2011-12-23 | 2016-07-06 | ゲーコーエヌ エアロスペース スウェーデン アーベー | ガスタービンエンジンの支持構造物 |
| US9127568B2 (en) * | 2012-01-04 | 2015-09-08 | General Electric Company | Turbine casing |
| US9498850B2 (en) * | 2012-03-27 | 2016-11-22 | Pratt & Whitney Canada Corp. | Structural case for aircraft gas turbine engine |
-
2013
- 2013-07-29 FR FR1357487A patent/FR3008912B1/fr active Active
-
2014
- 2014-07-25 JP JP2016518149A patent/JP6080245B2/ja active Active
- 2014-07-25 BR BR112016001910A patent/BR112016001910A2/pt not_active Application Discontinuation
- 2014-07-25 CN CN201480042552.7A patent/CN105431615B/zh active Active
- 2014-07-25 EP EP14755874.6A patent/EP3027854B1/fr active Active
- 2014-07-25 WO PCT/FR2014/051935 patent/WO2015015101A1/fr not_active Ceased
- 2014-07-25 RU RU2016107008A patent/RU2672237C2/ru not_active IP Right Cessation
- 2014-07-25 US US14/907,788 patent/US10337352B2/en active Active
- 2014-07-25 CA CA2918702A patent/CA2918702C/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015015101A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6080245B2 (ja) | 2017-02-15 |
| EP3027854B1 (fr) | 2017-09-27 |
| RU2016107008A (ru) | 2017-08-30 |
| RU2672237C2 (ru) | 2018-11-12 |
| US20160169045A1 (en) | 2016-06-16 |
| CA2918702A1 (fr) | 2015-02-05 |
| FR3008912B1 (fr) | 2017-12-15 |
| JP2016532804A (ja) | 2016-10-20 |
| RU2016107008A3 (fr) | 2018-05-11 |
| BR112016001910A2 (pt) | 2017-08-01 |
| US10337352B2 (en) | 2019-07-02 |
| FR3008912A1 (fr) | 2015-01-30 |
| CN105431615A (zh) | 2016-03-23 |
| CA2918702C (fr) | 2017-02-21 |
| CN105431615B (zh) | 2017-04-12 |
| WO2015015101A1 (fr) | 2015-02-05 |
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