WO2014102494A1 - Dispositif de liaison à double tube - Google Patents
Dispositif de liaison à double tube Download PDFInfo
- Publication number
- WO2014102494A1 WO2014102494A1 PCT/FR2013/053224 FR2013053224W WO2014102494A1 WO 2014102494 A1 WO2014102494 A1 WO 2014102494A1 FR 2013053224 W FR2013053224 W FR 2013053224W WO 2014102494 A1 WO2014102494 A1 WO 2014102494A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer tube
- inner tube
- tube
- opening
- connecting device
- 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
- 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
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
-
- 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
- F01D11/005—Sealing means between non relatively rotating elements
Definitions
- the present invention relates to a connecting device between two enclosures of a turbomachine to allow the establishment through said connecting device of a circulation of a cooling fluid between said enclosures.
- a turbomachine turbine generally has an air circulation circuit between a supply enclosure at the low pressure stator and the low pressure turbine rotor. This air circulation circuit is established through connecting devices connecting two enclosures of a turbomachine to allow establishment through said connecting device of a cooling air flow between said speakers.
- Figure 1 is a sectional view illustrating the arrangement of the connecting devices 20, 21 in a low pressure portion of a turbomachine turbine.
- Figure 2 is an enlargement of Figure 1 showing a first connecting device disposed between a first chamber at the high pressure compressor and a second chamber constituted by a blade of the distributor.
- Figure 3 is a sectional view showing a connecting device disposed between a first chamber constituted by a blade of the distributor and a second chamber constituted by the interior of the low pressure rotor.
- the air of this air circulation circuit is taken upstream on a compressor of the turbomachine and arrives at a first enclosure 22 constituting a supply enclosure. It then passes through the outer wall 25 of the distributor 23 by means of a first tubular connecting device 20 through which the air circulation circuit is established.
- the air circulation circuit typically passes through the circulation channels formed in a vane 24 of the distributor 23. Part of the air is discharged into the flow passage of the gases of the turbine through orifices (not shown) formed near the trailing edges of the dawn 24 of the dispenser. Another part of the air passes through the circulation channel formed in the vane 24 of the distributor 23 to reach a second tubular connection device 21 which allows the cooling air circuit to pass through the inner wall 26 of the distributor and housing 27 of the stator to arrive at the flanges 28 of the low pressure rotor to cool them.
- This air circulation circuit thus has two important functions of conveying the cooling air
- tubular connection devices also make it possible to cash the relative displacements between the elements delimiting these enclosures, in particular in the event of vibration or thermal expansion.
- tubular connecting devices take the form of connecting tubes with a shape called “dog bone”, having outer sections widened at their ends through which a connecting tube cooperates with the wall elements of the speakers that connects or with intermediate sockets connecting it to said elements.
- Patent Application EP 1 538 306 discloses such devices.
- the tubular connecting devices must also ensure a good seal at the link they constitute. Ensuring a good seal requires:
- a general object of the invention is to overcome all or part of the defects of the connecting devices of the prior art.
- a connecting device between two enclosures of a turbomachine to allow the establishment through said connecting device of a circulation of a cooling fluid between said enclosures, said connecting device comprising an outer tube having a opening extending over the entire length of said outer tube, said outer tube being shaped to cooperate with wall elements of the enclosures which it connects by means of enlarged portions or intermediate bushes, the connecting device further comprising an inner tube; extending inside the outer tube.
- Such a device has the advantage of being simple, inexpensive, reliable, robust, to have good wear resistance and to ensure the sealing of the cooling air circulation circuit during the passage of the in the connecting device.
- the inner tube has an opening extending over the entire length of said inner tube
- the opening of the inner tube is opposite a solid portion of the outer tube
- tabs of the inner tube protrude inwardly of said inner tube from zones on the periphery of the opening of the inner tube;
- the connecting device may comprise retaining means in rotation to limit relative rotation between the inner tube and the outer tube;
- the inner tube comprises an anti-rotation protuberance engaged in the opening of the outer tube
- the anti-rotation protuberance of the inner tube extends through the opening of the outer tube beyond said outer tube to protrude outwards;
- the outer tube comprises an anti-rotation protrusion projecting outwardly from the outer surface of said outer tube
- At least one of the outer tube and the inner tube has a polygonal and / or non-circular section
- the device further comprises a shutter closing the end of the opening of the outer tube, said shutter being secured to the outer tube or the inner tube.
- the invention also relates to a turbomachine comprising a connecting device according to the invention.
- Figure 2 is an enlargement of Figure 1 showing a connecting device disposed between a first chamber at the high pressure compressor and a second chamber constituted by a blade of the distributor;
- FIG. 3 is a sectional view showing a connecting device disposed between a first chamber constituted by a blade of the distributor and a second chamber constituted by the interior of the low pressure rotor;
- FIGS. 4a and 4b are perspective views of the outer tube and inner tube, respectively;
- FIG. 6 is a sectional view of a connecting device according to a possible embodiment of the invention.
- FIG. 7 to 9 are sectional views of connecting devices provided with rotation prevention means and positioning tabs according to possible embodiments of the invention.
- FIG. 10 is a sectional view of a connecting device according to a possible embodiment of the invention, wherein the outer tube and the inner tube have non-circular sections;
- FIG. 11a, 11b and 11c shows a connecting device according to a possible embodiment of the invention, wherein a shutter is disposed at the end of the opening of the outer tube;
- a connecting device comprises an outer tube 2 and an inner tube 6, said inner tube 6 extending inside. of the outer tube 2 ( Figure 6).
- the outer tube 4 has an opening 3 extending over the entire length of said outer tube 2.
- This opening 3 is preferably a slot in the wall of the outer tube 2, but it can take other more complex shapes, for example being serrated, oblique, zig-zag or any other acceptable form whose function approaches that of a slot.
- the opening 3 of the outer tube 2 may be made by electrofusion cutting with a wire.
- the width of the opening 3 must be sufficient to allow limited deformation of the outer tube 2 to reduce the stress on the structure of the outer tube 2 during use (shear, thermal expansion ). However, the opening must not be too large, so as not to alter the structure of the outer tube 2. The presence of the opening 3 also makes it possible to reduce the dimensioning requirements of the outer tube 2.
- the opening 3 of the outer tube 2 is preferably not covered by a seal because of the high temperatures to which the connecting device can be subjected, which can reach 500 ° C.
- the chosen materials to form the tubes are chosen for their resistance to such temperatures. It is also possible to provide a suitable coating such as a deposit of cobalt on the surfaces of the tubes.
- the connecting device is most often mounted blind in the wall openings of the speakers it connects, there is a significant risk of damaging the seal during the mounting operation, without the possibility of verification.
- the connecting device is slidably mounted in the wall orifices of the enclosures that it connects, and the axial retaining means make it possible to hold it in position.
- Various axial retention means may be envisaged to prevent a connecting device from coming out of the orifice in which it is arranged.
- the outer tube 2 is shaped to cooperate with elements associated with said speakers to maintain the connecting device in position relative to said speakers.
- the outer tube has a central cylindrical portion 4, enlarged portions 5 at its end by which the outer tube 2 cooperates with wall elements of the speakers that it connects, or with intermediate bushings connecting it to said wall elements.
- the central cylindrical portion 4 has a constant circular section, while the circular section at its enlarged portions 5 at its ends varies as that of a sphere portion.
- the links by which the connecting device is held in position relative to the walls of the enclosures that it connects are thus annular linear links.
- the inner tube 6 is disposed in the outer tube 2 and extends inside said outer tube 2.
- the arrangement of the inner tube 6 inside the outer tube 2 reinforces the connecting device.
- the inner tube 6 allows to ensure the tightness of the cooling air circuit that the connecting device allows to establish between two enclosures, this circuit being established through the inner tube 6.
- the inner tube 6 is preferably shaped to cooperate with the outer tube 2 to be maintained in axial position.
- the inner tube 6 has a central cylindrical portion 9, enlarged portions 7 at its end by which the inner tube 6 cooperates with the outer tube 2. These enlarged portions 7 here take a spherical shape. Specific axial retainers may also be provided.
- the inner tube 6 continues to provide both airtightness of the air circuit, and reinforcement of the tube external 2 weakened. As a result, the wear resistance of the connecting device is improved over a single tube.
- the inner tube 6 may have an outer section of an extension smaller than the extension of the inner section of the outer tube 2, to facilitate its introduction.
- the extension of the outer section of the inner tube 6 is chosen closest to the extension of the inner section of the outer tube 2, so that the inner tube 6 is held in close contact against said outer tube 2.
- the inner tube 6 has an opening 7 extending over the entire length of said inner tube 6.
- the opening 3 of the outer tube it is preferably a slot in the wall of the inner tube 6, but it can take other more complex shapes, for example be serrated, biased, zig-zag or any other acceptable form whose function approaches that of a slot.
- the opening 7 of the inner tube 6 can also be made by electrofusion cutting with a wire.
- the width of the opening 7 must be sufficient to allow limited deformation of the inner tube 6 in order to reduce the stresses on the structure of the inner tube 6 during its use (shearing, thermal expansion, etc.) or its set up. However, the opening 7 must not be too large, so as not to alter the structure of the inner tube 6. The presence of the opening 7 also makes it possible to reduce the requirements of sizing of the inner tube 6.
- the opening 7 of the inner tube 6 is opposite a solid portion of the outer tube 2.
- the opening 7 of the inner tube 6 is thus not facing of the opening 3 of the outer tube 2.
- the opening 7 of the inner tube 6 is plugged by the wall of the outer tube 2, sealing the air circuit.
- the respective openings of the inner tube 6 and the outer tube 2 are offset relative to each other by 180 ° about the common longitudinal axis of the inner and outer tubes. Other offsets can be provided, for example 90 °, but a shift of 180 ° ensures the best seal and improves the conservation of this seal in case of relative rotation between the inner tube 6 and the tube external 2.
- the connecting device may also comprise means for retaining rotation in order to limit relative rotation between the inner tube 6 and the outer tube 2.
- the inner tube 6 comprises an anti-rotation protrusion 10 engaged in the opening 3 of the outer tube 2.
- This anti-rotation protrusion 10 may take a different shape, for example it may be elongated to extend along the opening 3 of the outer tube 2, or take the form of an anti-rotation pin.
- This anti-rotation protrusion 10 cooperates with the edges of the opening 3 of the outer tube 2 to prevent the rotation of the inner tube 6 relative to the outer tube 2.
- the anti-rotation protuberance 10 of the inner tube preferably has substantially smaller dimensions than the opening 3 of the outer tube 2.
- the width of the anti-rotation protuberance 10 is less than 80%, preferably 50%, the width of the opening 3 of the outer tube 2 at the place where said anti-rotation protuberance 10 is engaged in the opening 3 of the outer tube 2.
- the outer tube 2 thus retains the advantages provided by its opening 3 in terms of constraints.
- allowing a limited relative rotation between the inner tube 6 and the outer tube 2 also relaxes the stresses, while facilitating the introduction of the inner tube 6 in the outer tube 2.
- This anti-rotation protrusion 10 is preferably located on the inner tube 6 opposite the opening 7 of said inner tube 6, in order to preserve a maximum offset between the respective openings of the inner and outer tubes, as illustrated in Figure 7.
- Other configurations may however be envisaged.
- FIG. 8 illustrates a possible embodiment incorporating the rotational retaining means of FIG. 7, in which the anti-rotation protuberance 10 of the inner tube 6 extends through the opening 3 of the outer tube 2 beyond said external tube 2.
- the anti-rotation protrusion 10 then protrudes outwardly of the connecting device and a housing can then be provided in the wall of the orifice in which is disposed said connecting device, for example in the socket of maintenance.
- the anti-rotation protuberance 10 then cooperates with the walls of this housing to provide an anti-rotation function to the assembly of the connecting device.
- FIG. 9 illustrates a possible embodiment of the invention, similar to that of FIG. 7, in which the outer tube 2 further comprises an anti-rotation protrusion 11 projecting outwardly from the outer surface of said tube. 2.
- the anti-rotation protuberance 11 of the outer tube then protrudes outwardly of the connecting device and a housing can then be provided in the wall of the orifice in which is disposed said connecting device, for example in the holding sleeve.
- the anti-rotation protuberance 1 1 then cooperates with the walls of this housing to provide anti-rotation function to the entire connecting device.
- lugs 12 of the inner tube 6 protrude inwardly from said inner tube 6 from zones on the periphery of the opening 7 of the inner tube 6. These lugs 12 form a support for a tool that would compress the opening 7 of the inner tube 6 by means of these tabs 12 to facilitate the introduction or removal of the inner tube 6 in the outer tube 2.
- outer tube 2 and the inner tube 6 In order to limit the relative rotation of the outer and inner tubes, provision can also be made for at least one of the outer tube 2 and the inner tube 6 to have a polygonal and / or non-circular section.
- Figure 10 shows a possible embodiment in which the outer tube 2 and the inner tube 6 both have a square overall section. The presence of angles makes it possible to limit the relative rotation between the outer tube 2 and inner tube 6, but is not necessarily necessary, since a tube of oval section would also limit the rotation.
- an outer tube 2 polygonal section and / or non-circular can limit the rotation of the connecting device vis-à-vis the housing in which it is arranged.
- FIGS. 11a, 11b and 11c show a connection device according to one possible embodiment of the invention, in which a shutter 13 is disposed at one end of the opening 3 of the outer tube 2.
- the shutter 13 thus makes it possible to improve the sealing of the connecting device by closing the end of the opening 3.
- the shutter 13 may be an integral part of the outer tube 2, in which case it is secured to one side of the wall of the outer tube 2 and extends on the other side of the opening 3 which closes the outlet to the end of the outer tube 2, to cover the wall on the other side of the opening 3.
- the shutter 13 may also be part of the inner tube 6, in particular of the anti-rotation protuberance 10 of the inner tube 6.
- the shutter 13 then also constitutes an axial retaining means between the inner tube 6 and the outer tube 2.
- FIG. 12 shows the connections through which the outer tube 2 is held in position in the orifices of the walls of the enclosures which it connects by means of intermediate bushes 14, 15.
- the outer tube 2 has a cylindrical part 4, at the end, by which the outer tube 2 cooperates with the intermediate bushes 14, 15 connecting it to wall elements 16, 17.
- the central cylindrical portion 4 has a circular section. constant, while the circular section at its enlarged portions 5 at its ends varies as that of a portion of sphere.
- the links 18, 19 by which the connecting device is held in position relative to the walls of the enclosures that it connects are thus annular linear links.
- Figure 13 shows another configuration for the outer tube 2, wherein the outer tube 2 is straight, that is to say that its diameter is constant.
- the intermediate bushes 14, 15 each have an outgrowth 14a, 15a directed towards the inside of said bushes 14, 15, and whose convex shape makes it possible to define with the outer tube 2 an annular linear connection between said outer tube 2 and said bushing 14. , 15 to ensure a linear leaktightness of the connection.
- This configuration can of course be adapted by keeping for example a spherical portion on the outer tube 2 and providing only a sleeve 14, 15 provided with a protrusion 14a, 15a.
- the protrusion 14a, 15a is continuous on the inner circumference of the bushing 14, to which it belongs, and preferably takes the form of a ring whose section is partially circular.
- the invention also relates to a turbomachine provided with a connecting device comprising the characteristics described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1511103.2A GB2524415B (en) | 2012-12-27 | 2013-12-20 | Double tube connecting device |
| US14/655,708 US9951636B2 (en) | 2012-12-27 | 2013-12-20 | Double tube connecting device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1262880A FR3000522B1 (fr) | 2012-12-27 | 2012-12-27 | Dispositif de liaison a double tube |
| FR1262880 | 2012-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014102494A1 true WO2014102494A1 (fr) | 2014-07-03 |
Family
ID=47902259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/053224 Ceased WO2014102494A1 (fr) | 2012-12-27 | 2013-12-20 | Dispositif de liaison à double tube |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9951636B2 (fr) |
| FR (1) | FR3000522B1 (fr) |
| GB (1) | GB2524415B (fr) |
| WO (1) | WO2014102494A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481740A (zh) * | 2014-12-30 | 2015-04-01 | 潍坊力创电子科技有限公司 | 发动机气体燃料多点顺序喷射装置 |
| FR3066228A1 (fr) * | 2017-05-12 | 2018-11-16 | Safran Aircraft Engines | Limitation du deplacement d'un tube de liaison par engagement d'une portion incurvee de paroi d'enceinte pour turbomachine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10392967B2 (en) * | 2017-11-13 | 2019-08-27 | General Electric Company | Compliant seal component and associated method |
| FR3090747B1 (fr) * | 2018-12-21 | 2021-01-22 | Turbotech | Chambre de combustion d'une turbomachine |
| US11473439B1 (en) | 2021-09-23 | 2022-10-18 | General Electric Company | Gas turbine engine with hollow rotor in fluid communication with a balance piston cavity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB553157A (en) * | 1941-08-14 | 1943-05-10 | British Thomson Houston Co Ltd | Improvements in and relating to methods of making a heat exchanger |
| WO2000070192A1 (fr) * | 1999-05-12 | 2000-11-23 | Siemens Aktiengesellschaft | Garniture pour l'etancheification d'une fente, en particulier d'une turbine, et turbine |
| EP1130305A2 (fr) * | 2000-03-03 | 2001-09-05 | General Electric Company | Réducteur de débit |
| EP1538306A1 (fr) | 2003-11-17 | 2005-06-08 | Snecma Moteurs | Dispositif de liaison entre un distributeur et son enceinte d'alimentation de fluide de refroidissement dans une turbomachine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7008185B2 (en) * | 2003-02-27 | 2006-03-07 | General Electric Company | Gas turbine engine turbine nozzle bifurcated impingement baffle |
-
2012
- 2012-12-27 FR FR1262880A patent/FR3000522B1/fr active Active
-
2013
- 2013-12-20 GB GB1511103.2A patent/GB2524415B/en active Active
- 2013-12-20 US US14/655,708 patent/US9951636B2/en active Active
- 2013-12-20 WO PCT/FR2013/053224 patent/WO2014102494A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB553157A (en) * | 1941-08-14 | 1943-05-10 | British Thomson Houston Co Ltd | Improvements in and relating to methods of making a heat exchanger |
| WO2000070192A1 (fr) * | 1999-05-12 | 2000-11-23 | Siemens Aktiengesellschaft | Garniture pour l'etancheification d'une fente, en particulier d'une turbine, et turbine |
| EP1130305A2 (fr) * | 2000-03-03 | 2001-09-05 | General Electric Company | Réducteur de débit |
| EP1538306A1 (fr) | 2003-11-17 | 2005-06-08 | Snecma Moteurs | Dispositif de liaison entre un distributeur et son enceinte d'alimentation de fluide de refroidissement dans une turbomachine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481740A (zh) * | 2014-12-30 | 2015-04-01 | 潍坊力创电子科技有限公司 | 发动机气体燃料多点顺序喷射装置 |
| FR3066228A1 (fr) * | 2017-05-12 | 2018-11-16 | Safran Aircraft Engines | Limitation du deplacement d'un tube de liaison par engagement d'une portion incurvee de paroi d'enceinte pour turbomachine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201511103D0 (en) | 2015-08-05 |
| GB2524415A (en) | 2015-09-23 |
| GB2524415B (en) | 2017-03-08 |
| FR3000522B1 (fr) | 2018-11-02 |
| US20150345317A1 (en) | 2015-12-03 |
| FR3000522A1 (fr) | 2014-07-04 |
| US9951636B2 (en) | 2018-04-24 |
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