WO2013076417A1 - Systeme mecanique pour turbomachine, turbomachine et procede de fixation d'un systeme mecanique dans une turbomachine - Google Patents
Systeme mecanique pour turbomachine, turbomachine et procede de fixation d'un systeme mecanique dans une turbomachine Download PDFInfo
- Publication number
- WO2013076417A1 WO2013076417A1 PCT/FR2012/052676 FR2012052676W WO2013076417A1 WO 2013076417 A1 WO2013076417 A1 WO 2013076417A1 FR 2012052676 W FR2012052676 W FR 2012052676W WO 2013076417 A1 WO2013076417 A1 WO 2013076417A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- locking
- self
- mechanical system
- elements
- distance
- Prior art date
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
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/026—Shaft to shaft connections
-
- 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
- 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
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D25/26—Double casings; Measures against temperature strain in casings
- F01D25/265—Vertically split casings; Clamping arrangements therefor
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/20—Mounting or supporting of plant; Accommodating heat expansion or creep
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/80—Couplings or connections
Definitions
- the invention relates to the field of turbomachines and mechanical systems installed therein.
- the fixing of a mechanical part during the production of a turbomachine is generally carried out by means of threaded fasteners, such as screws, nuts or studs.
- the assembly formed by such a part to be fixed on which the fastening elements are mounted forms a mechanical system for a turbomachine.
- the invention relates more specifically to a mechanical system for a turbomachine, a turbomachine and a method for fixing a mechanical system in a turbomachine.
- a first possibility is to use a stop member of the fastener element as a locking member.
- Such an abutment member is shaped to abut with a corresponding abutment wall provided on the part to be fixed.
- each abutment member abuts on a stop wall of the workpiece to be fixed, this abutment blocking in rotation the corresponding fastening element.
- a second possibility is to adapt each of the locking members so that the locking in rotation of each of the fastening elements to be blocked is obtained by cooperation of the corresponding locking member with a fastener directly adjacent.
- the locking member has a bearing portion bearing against the fastening element to be locked adjacent so that this support rotates the corresponding fastening element.
- Such a locking member must necessarily be adapted to the distance between fastening elements to be blocked.
- the fixing elements to be blocked being generally distributed along a line, it follows that the cumulative length of the locking members of all the fasteners to be blocked is of the same order of magnitude as the line. This results in a significant increase in the weight of the mechanical system and therefore the turbomachine. This increase in the weight of the mechanical system limits the efficiency of the equipped turbomachine and causes an increase in the cost of supplying the fasteners to be blocked.
- the present invention aims to remedy these disadvantages.
- An object of the invention is therefore to provide a mechanical system in which fastening elements are locked in rotation, the mechanical system presenting risks of residual stresses after clamping and damage of the part to be fixed during multiple assembly operations and disassembly which are reduced, and having an increase in the weight of the mechanical system for locking in rotation of the fastening elements which is reduced vis-à-vis the mechanical systems of the prior art, whose fasteners are locked in rotation, and which presents reduced risks of damage to the part to be fixed.
- the subject of the invention is a mechanical system for a turbomachine comprising a turbine engine fastener part and a plurality of threaded fasteners mounted on the part in succession along a line, said fastening elements being adapted to fix the part to be fixed in the turbomachine,
- At least one of said pairs having a distance between the thread axes of its two self-locking elements strictly less than the distance between any one of these two threading axes and the axis of any one of the axes of two fixing elements arranged on the line on either side of said pair.
- the locking means for the self-locking elements are provided solely by cooperation between the self-locking elements of the same pair, it follows that the locking means of said self-locking elements must cover a portion of the line according to which the pairs are arranged without interactions with the other fasteners of this same line. This therefore reduces the mass of the assembly, since the space between the self-locking elements of each and the fastening elements on either side of the pair is not covered by the locking means.
- the self-locking elements of at least one of the pairs having a distance between the thread axes of the self-locking elements of the same pair less than the distance between any one of these two threading axes. and the axis of any one of the two fixing elements arranged on the line on either side of said pair, this results in a further reduction of the line portion covered by the blocking means.
- Each of the pairs may have a distance between the threading axes of its two self-locking elements strictly less than the distance between any one of these two threading axes and the threading axis of any one of the two elements of the thread. fasteners arranged on the line on either side of said pair.
- the locking means of the set of self-locking elements cover a reduced portion since the distance between the axes of the self-locking elements of the same pair is less than that between the axes of any one of the two elements of fasteners arranged on the line on either side of said pair.
- the distance between the thread axes of the two self-locking members of a pair may be substantially identical for each of the pairs and is equal to a distance dl.
- the set of fixing elements may be self-locking elements, the distance between the threading axes of two consecutive self-locking elements of different pairs being equal to a distance d2 greater than dl, the ratio of d2 to d1 being preferably greater or equal to 1.3.
- the distance d1 being less than d2, it follows that a portion of the line greater than half of its total length of the line is not covered.
- this portion of line not covered by the blocking means represents approximately 60% of the total length of the line.
- Each self-locking element may comprise a locking member forming the locking means, said locking member of a locking element of a pair being complementary to the locking member of the other self-locking element of the pair.
- the locking member also preferably acting as a support means adapted to limit translational movements of the corresponding self-locking element along the thread axis of the self-locking element on the piece to fix.
- Each locking member when it also serves as a stop means, allows the mechanical system to have a reduced weight since the fasteners do not need to present additional support means to the locking member .
- Each locking member may have an abutment portion abutting on a complementary abutment portion of the locking member corresponding to the other self-locking member of the pair, the abutment portions of the self-locking elements being preferably substantially identical. .
- Such a stop portion makes it possible to offer a simple blocking is robust for each of the self-locking elements.
- the line is substantially circular, the part to be fixed is preferably substantially disk-shaped or substantially annular.
- Each of the fastening elements may be a fastening element taken from the group comprising the screws, studs and nuts, the part to be fastened being preferably a turbomachine flange.
- fastening means are particularly suitable for a fastener part which is a flange.
- the invention also relates to a turbomachine comprising a mechanical system according to the invention.
- Such a turbomachine has easy maintenance, since the mechanical system equipping it can be removed without requiring a blocking of the self-locking elements, while having a reduced weight increase vis-à-vis a turbomachine equipped with a system mechanical mechanism of the prior art having means for locking in rotation of its fastening elements.
- the invention also relates to a method of manufacturing a turbomachine, the turbomachine comprising a mechanical system according to the invention, the method comprising the steps of:
- Such a method allows the manufacture of a turbomachine having easy maintenance, since the mechanical system equipping it can be dismounted without requiring a blocking of the self-locking elements, while having a reduced weight increase vis-à-vis a turbomachine equipped with a mechanical system of the prior art having means for locking in rotation of its fasteners.
- FIG. 1 illustrates an example of a mechanical system according to the invention
- FIG. 2 illustrates two portions of housings fixed to one another by means of a mechanical system of the same type as that illustrated in FIG. 1;
- FIG. 3 illustrates a close-up and perspective view of the mechanical system illustrated on FIG. FIG. 1
- FIG. 4 illustrates a first variant of a fastening element in which the fastening element is a screw
- Figure 5 illustrates a second variant of a fastener in which the fastener is a nut.
- FIG. 1 illustrates a mechanical system 100 intended to equip a turbomachine.
- the mechanical system 100 illustrated is a flange, such as a connecting flange 200 used for connection between two portions 20, 30 of flue gas ejections casings, as illustrated in Figure 2.
- Such a mechanical system 100 comprises:
- a first flange 200 intended to allow the connection, with a second flange 32, illustrated solely in FIG. 2, between two portions of housings 20, 30, and
- each of the screws 310, 330 having, as illustrated in FIG. 3, a threaded screw body 311, defining a thread axis 320, and a screw head 315, acting as a rotational locking means.
- the flange 200 has a flat annular shape, the central opening 210 of the ring being adapted for the passage of a rotor and centered on an axis 205 corresponding to the longitudinal axis of the turbomachine.
- the flange 200 comprises a plurality of passages, not shown, for the screws distributed along a line 250.
- the line 250 as shown in dashed lines in FIG. 1, is substantially circular.
- the line 250 follows a circumference of the flange 200 in the manner of a conventional through-hole, preferably with a small clearance.
- the passages are adapted for the passage of the screws 310, 330.
- Each of the passages is preferably smooth to allow easy mounting of the screws 310, 330 on the flange 200.
- the passages are arranged substantially regularly in pairs.
- the arrangement of the passages on the flange 200 is formed so that, when the screws 310, 330 are mounted on the first flange 200, the distance between the thread axes 320 of the two screws 310, 330 corresponding to a pair 300 is substantially equal to dl and the distance between the axes of two screws 310, 330 which succeeds in the line 250 and belonging to two different pairs is substantially equal to d2.
- the distances d1 and d2 are defined taking into account the two parameters that are the mechanical stresses necessary to obtain a quality connection between the two housings and the dimensions, and therefore the weight, of the screw heads 315 of the screws 310, 330.
- the first parameter makes it possible to determine d2, which will be chosen so that the compression forces of the first and second flanges are homogeneously distributed around their periphery.
- the ratio d2 on d1 may be greater than 1.3.
- Figure 4 illustrates one of the screws.
- the screw body 311 has an axial symmetry around the thread axis 320.
- the screw body 311 has a threaded portion 311a for mounting a nut and a smooth portion 311b to allow mounting in the corresponding passage of the first flange 200 and the second flange.
- the smooth portion 311b has on its periphery a groove 311c adapted to receive a stop ring (not shown) and a portion 311d adjusted to the passage corresponding to the first flange 200, in order to make the screw secured to the first flange. 200 before mounting on the second flange.
- the screw head 315 has a substantially flat shape, having a bearing surface 316 bearing on the first flange 200 when the screw 310, 330 is mounted on the first flange 200.
- the screw head 315 is disposed at the end of the fitted portion 311d of the smooth portion, the screw body 311 extending substantially perpendicularly from the bearing face 316.
- the screw body 311 is connected to the center of the bearing face 316 to allow properly distribute the loads of the link.
- the bearing face 316 forms a support means adapted to bear on the first flange 200, when the screw 310, 330 is mounted in the first flange 200, and thus limit the translation movements of the screw 310, 330 along its thread axis 320 relative to the first flange 200.
- the screw head 315 comprises a stop portion 317 adapted to be abutted with the abutment portion 317 of a second screw 330 which is paired with it when mounted on the first flange 200.
- the abutment portion 317 is a substantially flat portion of the screw head 315 parallel to the thread axis 320 of the screw 310.
- the distance between the plane delimited by the abutment portion 317 and the center of the bearing face 316, at which the thread axis 320 passes, is equal to half of dl at which half of a screw spacing 310, 330 is removed, this spacing being well below dl.
- the spacing between screws 310, 330 may take a value of 0.5 mm.
- the screw head 315 by its bearing portion 317, is a stop member of the screw and forms when the screw 310 is mounted on the flange 200 and is in cooperation with a screw 330 which is matched to it, a means locking in rotation.
- Each of the screws 310, 330 forms a fastening element which is also, due to the presence of the abutment portion 317, a self-locking element.
- Such a mechanical system 100 is suitable for the manufacture of a turbomachine.
- the second flange has a shape similar to that of the first flange with passages corresponding to those of the first flange 200, so that when the first flange 200 is attached to the second flange, each of the passages of the first flange 200 either in view of the corresponding passage of the second flange.
- the manufacture of a turbomachine comprising such a mechanical system 100 can be achieved by a method comprising in particular the steps of:
- the technician performing this implementation does not need to lock in rotation the screws 310, 330, the latter being blocked. rotation by the support of their abutment portion 317 on the abutment portion 317 of the screw 330 which is matched to them.
- FIG. 5 illustrates a variant of the mechanical system 100 according to which the fastening elements are nuts 310 '.
- each of the passages is a passage for a screw, not shown, the second flange to be screwed into the corresponding nut 310 'of the mechanical system 100 , and in that the nut 310 'comprises a nut body 31, the nut body 311' having the abutment portion 317 '.
- a nut 310 ' according to this variant comprises a threaded orifice 313' formed in the nut body 31 and intended to receive the threaded portion of a screw, not shown, during the fixing of the first flange 200 on the second flange.
- the nut 310 ' also comprises a central mounting portion 312 'in which is also provided the threaded hole.
- This same central portion 312 ' may also include a self-braking zone, or equivalent, adapted to prevent accidental unscrewing of the screw during operation, especially in the presence of strong vibrations.
- the central portion 312 ', protruding from the nut body 31, is intended to be installed in the corresponding passage of the first flange 200 to allow mounting of the nut 310' on the first flange 200.
- the central portion 312 ' is adapted to be locked in the passage of the first flange when inserted into the orifice.
- Such an adaptation of the central portion may take the form of a flare of this central portion intended to cooperate with a larger or conical bore made in the first flange 200 on the face opposite to that which is intended to be in support of the 316 'surface of the nut.
- the manufacture of a turbomachine comprising a mechanical system 100 according to this variant can be achieved by a method comprising in particular the steps of:
- the fastening elements are respectively screws 310, 330 and nuts 310 '
- the fastening elements can also be, without departing from the scope of the invention, studs , the central portion of the stud having a support member having an abutment portion 317 forming a locking means.
- the abutment portion 317 has an identical flat shape for each of the self-locking elements
- self-locking elements of a first type having a stop portion 317, 317 'of a first shape, such as a curvilinear surface, and self-locking elements, of a second type, having a stop portion 317 of a second form complementary to the first, the self-locking elements of the first type being associated in each pair 300 with an element of the second type when they equip the part to be fixed.
- the part to be fixed is a flange and the line 250 is a circular line
- the part to be fixed may take a shape other than a ring, such as a linear shape, and may be another piece to fix a turbomachine, such as a rail, this without departing from the scope of the invention.
- the line will also have a suitable shape, such as a straight line, for a part to fix of linear form.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/360,377 US9790814B2 (en) | 2011-11-23 | 2012-11-20 | Mechanical system for a turbine engine, turbine engine, and method for attaching a mechanical system within a turbine engine |
GB1409132.6A GB2513740B (en) | 2011-11-23 | 2012-11-20 | Mechanical system for a turbine engine, turbine engine, and method for attaching a mechanical system within a turbine engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1160692A FR2982907B1 (fr) | 2011-11-23 | 2011-11-23 | Systeme mecanique pour turbomachine, turbomachine et procede de fixation d'un systeme mecanique dans une turbomachine |
FR1160692 | 2011-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013076417A1 true WO2013076417A1 (fr) | 2013-05-30 |
Family
ID=47436039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2012/052676 WO2013076417A1 (fr) | 2011-11-23 | 2012-11-20 | Systeme mecanique pour turbomachine, turbomachine et procede de fixation d'un systeme mecanique dans une turbomachine |
Country Status (4)
Country | Link |
---|---|
US (1) | US9790814B2 (fr) |
FR (1) | FR2982907B1 (fr) |
GB (1) | GB2513740B (fr) |
WO (1) | WO2013076417A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014179328A1 (fr) * | 2013-04-29 | 2014-11-06 | United Technologies Corporation | Joint pour fermer une fente entre des segments de carter d'une chambre de combustion de moteur à turbine à gaz industriel |
FR3010272B1 (fr) | 2013-09-04 | 2017-01-13 | Commissariat Energie Atomique | Dispositif acoustique digital a puissance sonore augmentee |
US10502059B2 (en) * | 2015-02-02 | 2019-12-10 | United Technologies Corporation | Alignment tie rod device and method of utilization |
US11041461B2 (en) * | 2018-02-15 | 2021-06-22 | Raytheon Technologies Corporation | Exhaust liner deflection limiter |
US10774685B2 (en) * | 2018-04-30 | 2020-09-15 | Ratheon Technologies Corporation | Gas turbine engine exhaust component |
US11015636B2 (en) * | 2018-07-03 | 2021-05-25 | Raytheon Technologies Corporation | Nut strip assembly with array of captured nuts |
US11421557B1 (en) * | 2021-08-13 | 2022-08-23 | Honeywell International Inc. | Turbomachine components including castellation flanges and methods for coupling turbomachine components |
FR3145185A1 (fr) * | 2023-01-20 | 2024-07-26 | Safran Aircraft Engines | Dispositif d’arret en rotation pour rotor de turbomachine, rotor et turbomachine associes. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5295773A (en) * | 1992-11-10 | 1994-03-22 | United Technologies Corporation | Self-locking pressed in insert arrangement |
EP1096111A1 (fr) * | 1998-06-09 | 2001-05-02 | Mitsubishi Heavy Industries, Ltd. | Dispositif de refroidissement pour des brides à turbine à vapeur |
EP1158142A2 (fr) * | 2000-05-20 | 2001-11-28 | General Electric Company | Configuration évitant la fissuration des brides boulonnées |
EP1683942A2 (fr) * | 2004-12-21 | 2006-07-26 | General Electric Company | Dispositif d'équilibrage pour moteurs à turbine à gaz |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE333669B (fr) * | 1967-12-06 | 1971-03-22 | Nordstjernan Rederi Ab | |
SE406625B (sv) * | 1977-07-12 | 1979-02-19 | Stal Laval Turbin Ab | Turbomaskin |
US5226788A (en) * | 1991-12-23 | 1993-07-13 | General Electric Company | Turbine heat shield and bolt retainer assembly |
US6352404B1 (en) * | 2000-02-18 | 2002-03-05 | General Electric Company | Thermal control passages for horizontal split-line flanges of gas turbine engine casings |
US6641326B2 (en) * | 2001-12-21 | 2003-11-04 | General Electric Company | Removable stud for joining casing flanges |
US20050172638A1 (en) * | 2004-02-10 | 2005-08-11 | Czachor Robert P. | Methods and apparatus for assembling gas turbine engines |
FR2869374B1 (fr) * | 2004-04-23 | 2009-01-30 | Snecma Moteurs Sa | Systeme de fixation de pieces par des goujons a collerettes |
US8459941B2 (en) * | 2009-06-15 | 2013-06-11 | General Electric Company | Mechanical joint for a gas turbine engine |
-
2011
- 2011-11-23 FR FR1160692A patent/FR2982907B1/fr active Active
-
2012
- 2012-11-20 GB GB1409132.6A patent/GB2513740B/en active Active
- 2012-11-20 US US14/360,377 patent/US9790814B2/en active Active
- 2012-11-20 WO PCT/FR2012/052676 patent/WO2013076417A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5295773A (en) * | 1992-11-10 | 1994-03-22 | United Technologies Corporation | Self-locking pressed in insert arrangement |
EP1096111A1 (fr) * | 1998-06-09 | 2001-05-02 | Mitsubishi Heavy Industries, Ltd. | Dispositif de refroidissement pour des brides à turbine à vapeur |
EP1158142A2 (fr) * | 2000-05-20 | 2001-11-28 | General Electric Company | Configuration évitant la fissuration des brides boulonnées |
EP1683942A2 (fr) * | 2004-12-21 | 2006-07-26 | General Electric Company | Dispositif d'équilibrage pour moteurs à turbine à gaz |
Also Published As
Publication number | Publication date |
---|---|
FR2982907A1 (fr) | 2013-05-24 |
FR2982907B1 (fr) | 2013-12-27 |
GB2513740A (en) | 2014-11-05 |
US20140286770A1 (en) | 2014-09-25 |
GB201409132D0 (en) | 2014-07-09 |
US9790814B2 (en) | 2017-10-17 |
GB2513740B (en) | 2018-05-02 |
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