WO2014037664A1 - Dispositif d'alimentation en air pour turbines de moteurs d'aeronefs - Google Patents
Dispositif d'alimentation en air pour turbines de moteurs d'aeronefs Download PDFInfo
- Publication number
- WO2014037664A1 WO2014037664A1 PCT/FR2013/052028 FR2013052028W WO2014037664A1 WO 2014037664 A1 WO2014037664 A1 WO 2014037664A1 FR 2013052028 W FR2013052028 W FR 2013052028W WO 2014037664 A1 WO2014037664 A1 WO 2014037664A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing surface
- holding plate
- flange
- crimped
- upstream
- 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.)
- Ceased
Links
Classifications
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
-
- 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
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
-
- 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
- F01D5/08—Heating, heat-insulating or cooling means
-
- 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
- F02C7/12—Cooling of plants
-
- 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
- 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
- F05D2260/31—Retaining bolts or nuts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the present invention relates to an air supply device for turbine engines - or turbojets or turbomachines - aircraft.
- the technical field of the invention is, in general, that of aircraft engines, and more particularly that of the air circulation and / or the cooling of various elements, in particular the air flow between a low pressure distributor and low pressure turbines and high pressure turbines of the engines considered.
- the low pressure distributors have the particular function of circulating air to the low and high pressure turbines.
- air is transmitted via bushings from the low pressure distributors to cavities delimited by flange-type elements which supply air to the low and high pressure turbines.
- the supply of the turbines through the flanges is, in general, carried out via injectors whose number, positioning and sections are determined according to the characteristics of the turbines considered.
- FIG. 1 A particular zone of an example of such an air supply device is shown, in section and schematically in FIG.
- the end of a sleeve 101 forming a connecting tube, through which air is transmitted from a low pressure distributor not shown; the air is thus transmitted in a volume 102 defined by a downstream flange 104 and an upstream flange 103, in which is formed a bore receiving an end of the sleeve 101.
- the upstream flange 103 and the downstream flange 104 are secured by means of a first screw-nut system comprising a first screw 105 held in a first nut 106 positioned on the upstream flange 104.
- a retention plate 109 In order to keep the sleeve 101 in position, it is necessary to block it at its lower end by a retention plate 109, the upper end, not shown, being blocked by the low pressure distributor itself.
- the retention plate 109 is held in position by a second screw-nut system comprising a second screw 107 and a second nut 108 on a flank of the upstream flange 103. An end of the retention plate 109 extends at the bore receiving the socket 101 so as to keep said sleeve 101 locked.
- the bushings are arranged in a plane perpendicular to the plane of the section visible in FIG. 1, and are organized circularly around a volume delimited by the upstream and downstream flanges.
- a disadvantage of the devices of the state of the art of the type just described is the number of important fasteners whose presence is necessary; indeed, it is necessary to provide a specific fastening system dedicated to maintaining the retention plate used to axially lock a specific socket.
- the number of bushings present to transmit the air from the low pressure distributors being typically several tens, this results in a cost disadvantage - due to the large number of parts involved in fixing said bushings - as well as a multiplication of the operations of mounting, the retention plate to be fixed at each socket.
- the object of the invention offers a solution to the problem that has just been described, by proposing a device for supplying air to aircraft engine turbines in which the number of fastening means intervening to secure the connection is limited. different flanges present and to ensure the retention of the sockets transmitting air from the low pressure distributors.
- the invention thus essentially relates to an air supply device for an aircraft engine turbine, a device into which air is sent to at least one aircraft engine turbine after having been sent via at least one bushing of connection from a low-pressure distributor to a volume delimited by at least one upstream flange and a downstream flange, the upstream flange having at least one opening, each piercing receiving one end of one of the connecting bushings, characterized in that the upstream flange and the downstream flange are secured by at least one fastening means, a holding plate ensuring the positioning, for each fixing means, of a fastening element of the fastening means in question, said holding plate having a surface of support blocking axially, in one direction, each connecting sleeve.
- the air circulation device according to the invention may have one or more additional characteristics among the following, considered individually or according to the technically possible combinations: fastener is a nut crimped on the holding plate;
- the bearing surface consists of a succession of bearing zones, the bearing zones intervening in the rotational locking of one of the crimped nuts having a depth greater than the bearing zones acting solely for blocking the connecting sleeves;
- the bearing surface of the retaining plate axially blocks, in one direction, each connecting sleeve at one end of said bearing surface, said end leaving open the connecting sleeve considered; - the bearing surface is scalloped;
- the bearing surface is contained in a plane perpendicular to a holding surface of the crimped nuts
- the holding surface of the crimped nuts is scalloped;
- the holding plate has bores adapted to receive fastening means of said holding plate on the upstream flange;
- the holding plate maintains a previously determined number of bushings, and the holding plate is used for the positioning of a predetermined number of fixing elements, the ratio between the number of bushings and the number of fixing elements. being an integer, typically three;
- the present invention also relates to a holding plate suitable for use in the device according to the invention.
- the present invention also relates to an aircraft comprising the air circulation device according to the invention.
- FIG. 2 a schematic representation of an example according to the invention of air circulation device under a low pressure distributor; in FIG. 3, a detailed representation of a particular zone of the device of FIG. 2;
- FIG. 2 there is shown a sectional view of an exemplary air circulation device according to the invention.
- FIG. 2 is described in conjunction with FIG. 3, which shows in greater detail a particular zone of the exemplary device shown in FIG. 2, said particular zone containing in particular a holding plate 217 constituting an essential element of the device according to FIG. 'invention.
- FIG 2 there is shown a direction of air flow 300 in an example of air supply device according to the invention.
- the air passes through a low pressure distributor 200 to be transmitted, via a connecting sleeve 201, in a volume delimited by an upstream flange 202 and by a downstream flange 209 to then be sent via injectors. not shown, to low and high pressure turbines.
- the upstream flange 202 has, in section, a generally "Y" shape, with a lower end 203 used for the positioning of an abradable element 208, a first upper end 204 positioned against a wall of the low pressure distributor 200, and a second end 206 terminating a wall 205.
- the abradable 208 here serves to ensure the separation between high pressure cavities and low pressure cavities.
- the second upper end 206 has an opening into which is inserted a lower end of the sleeve 201; the upper end 206 ends with a portion 207 forming a substantially vertical return at which the upstream flange 202 is secured to the downstream flange 209.
- the downstream flange 209 has in particular an upper end 21 1 positioned against a wall of the low pressure distributor 200, and a lower end 210 contributing to the positioning of the abradable element 208.
- the downstream flange 209 further comprises a bore 212, positioned facing a piercing 216 formed in the portion 207 of the upstream flange 202, the piercing 212 and the piercing 216 being intended to receive a fastening element of the screw type 214, which forms with a nut 219 an example of fastening means ensuring the joining together between the upstream flange 202 and the downstream flange 209.
- the retaining plate 217 assures the positioning of the nut 219, for example by presenting it in a crimped manner on said sheet 217.
- a rod 215 of the screw 214 can be inserted easily into the nut 219, a screw head 213 of the screw 214 being retained, at the end of the screwing operation, against an outer wall of the downstream flange 209 .
- the holding plate 217 has a bearing surface 218 which ensures the axial locking of the sleeve 201, at its lower end, towards the inside of the volume defined by the upstream flange 202 and the downstream flange. 209.
- Axial locking means a blockage in the direction of the flow of air through the sleeve 201 of generally cylindrical shape. The upper end of the connecting sleeve 201 is locked against a wall of the low pressure distributor 200, ensuring its axial retention in the opposite direction to the locking provided by the holding plate 217.
- Figures 4-A, 4-B, 4-C and 4-D show the holding plate 217 respectively in a first perspective view, according to a second perspective view, in a partial view in more detail and in a view from above .
- the holding plate 217 maintains a plurality of connecting bushings 201, a single bushing 201 being shown in the figures for the sake of clarity; as described above, the lower end of each bushing 201 is blocked by the bearing surface 218, at a bearing point 404 which makes it possible to block the sleeve 201 axially without obstructing it, the air circulation thus not being impeded.
- the holding plate 217 has a plurality of holes 400 intended to allow each screw 214 to be introduced into each crimped nut 219.
- the holes 400 are arranged in a single plane constituting a holding surface, positioning, crimped nuts 219.
- the holding surface of the nuts is scalloped, so that two successive zones having a bore, and thus forming a support for a crimped nut, are spaced apart by empty portions 403, making the holding plate 217 lighter.
- the bearing surface 218 is scalloped, in order to lighten the holding plate 217.
- the bearing surface thus has a succession of bearing zones, spaced by empty portions 405, said support zones forming teeth extending in a direction substantially perpendicular to the plane constituting the holding surface of the crimped nuts 219, said bearing zones having a greater depth when they are used to ensure the locking in rotation of the crimped nuts 219 during the operations of screwing screws 214 only when they are used simply for axial locking of the bushes 201.
- a plurality of bushes 201 are held by a sector of the bearing surface 218 between two consecutive nuts 219; in the example shown, it is thus expected that three bushes 201 are maintained by each sector of the holding plate 217 between two consecutive nuts 219.
- the holding plate 217 is advantageously sectored: it is necessary to juxtapose several - typically three or four - to form a complete turn ensuring the joining of the upstream flange 202 and the downstream flange 209.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Turbines (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1503493.7A GB2520212B (en) | 2012-09-04 | 2013-09-03 | Air supply device for aircraft engine turbines |
| US14/425,534 US9920690B2 (en) | 2012-09-04 | 2013-09-03 | Air supply device for aircraft engine turbines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1258235A FR2995021B1 (fr) | 2012-09-04 | 2012-09-04 | Dispositif d'alimentation en air pour turbines de moteurs d'aeronefs |
| FR1258235 | 2012-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014037664A1 true WO2014037664A1 (fr) | 2014-03-13 |
Family
ID=47003145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/052028 Ceased WO2014037664A1 (fr) | 2012-09-04 | 2013-09-03 | Dispositif d'alimentation en air pour turbines de moteurs d'aeronefs |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9920690B2 (fr) |
| FR (1) | FR2995021B1 (fr) |
| GB (1) | GB2520212B (fr) |
| WO (1) | WO2014037664A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11015636B2 (en) * | 2018-07-03 | 2021-05-25 | Raytheon Technologies Corporation | Nut strip assembly with array of captured nuts |
| US20260085839A1 (en) * | 2024-09-26 | 2026-03-26 | Rtx Corporation | Flexible flange design |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1450005A1 (fr) * | 2003-02-14 | 2004-08-25 | Snecma Moteurs | Dispositif de refroidissement de disques de turbines |
| EP1785588A1 (fr) * | 2005-10-21 | 2007-05-16 | Snecma | Dispositif de ventilation de disque de turbine dans un moteur à turbine à gaz |
| EP2011966A2 (fr) * | 2007-07-06 | 2009-01-07 | Snecma | Dispositif d'alimentation en air de ventilation des aubes de turbine basse pression d'un moteur à turbine à gaz |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10310815A1 (de) * | 2003-03-12 | 2004-09-23 | Rolls-Royce Deutschland Ltd & Co Kg | Wirbelgleichrichter in Röhrenbauweise mit Haltering |
| FR2935429B1 (fr) * | 2008-08-26 | 2011-11-25 | Snecma | Aubage fixe de turbomachine a masse reduite et turbomachine comportant au moins un tel aubage fixe |
-
2012
- 2012-09-04 FR FR1258235A patent/FR2995021B1/fr active Active
-
2013
- 2013-09-03 WO PCT/FR2013/052028 patent/WO2014037664A1/fr not_active Ceased
- 2013-09-03 GB GB1503493.7A patent/GB2520212B/en active Active
- 2013-09-03 US US14/425,534 patent/US9920690B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1450005A1 (fr) * | 2003-02-14 | 2004-08-25 | Snecma Moteurs | Dispositif de refroidissement de disques de turbines |
| EP1785588A1 (fr) * | 2005-10-21 | 2007-05-16 | Snecma | Dispositif de ventilation de disque de turbine dans un moteur à turbine à gaz |
| EP2011966A2 (fr) * | 2007-07-06 | 2009-01-07 | Snecma | Dispositif d'alimentation en air de ventilation des aubes de turbine basse pression d'un moteur à turbine à gaz |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201503493D0 (en) | 2015-04-15 |
| FR2995021A1 (fr) | 2014-03-07 |
| US20150226121A1 (en) | 2015-08-13 |
| GB2520212B (en) | 2017-06-28 |
| FR2995021B1 (fr) | 2017-08-25 |
| GB2520212A (en) | 2015-05-13 |
| US9920690B2 (en) | 2018-03-20 |
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