EP4334572A1 - Procédé de montage d'un élément abradable comprenant une structure alvéolaire dans une gorge annulaire d'un organe de turbomachine - Google Patents
Procédé de montage d'un élément abradable comprenant une structure alvéolaire dans une gorge annulaire d'un organe de turbomachineInfo
- Publication number
- EP4334572A1 EP4334572A1 EP22722316.1A EP22722316A EP4334572A1 EP 4334572 A1 EP4334572 A1 EP 4334572A1 EP 22722316 A EP22722316 A EP 22722316A EP 4334572 A1 EP4334572 A1 EP 4334572A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abradable element
- support base
- plane
- abradable
- annular
- 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
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- 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
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
- F01D11/127—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with a deformable or crushable structure, e.g. honeycomb
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- 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
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
- F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
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- 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
- F05D2230/68—Assembly methods using auxiliary equipment for lifting or holding
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- 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
- F05D2230/80—Repairing, retrofitting or upgrading 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
- F05D2250/283—Three-dimensional patterned honeycomb
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- 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
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/501—Elasticity
Definitions
- the present description relates to a method of mounting an abradable element comprising a honeycomb structure in an annular groove of a turbomachine member.
- FIG. 1 illustrates a turbomachine 1 of the prior art. This comprises, from upstream to downstream in the direction of gas flow, a fan 2, a low-pressure compressor 3, a high-pressure compressor 4, a combustion chamber 5, a high-pressure turbine 6, a low-pressure turbine pressure 7 and a gas exhaust nozzle 8.
- the high-pressure compressor 4 and the low-pressure compressor 3 are respectively connected to a high-pressure turbine 6 and a low-pressure turbine 7 by a respective shaft 9 extending in the direction of a longitudinal axis X of the turbomachine 1.
- Each compressor stage 3, 4 is formed by an upstream moving wheel comprising an annular row of moving blades 10 inside an outer annular casing 11 and a downstream stator comprising an annular row of stationary blades 12 relative to the outer annular casing 11.
- each turbine stage 6, 7 is formed by an upstream distributor comprising an annular row of stationary blades 12 relative to the outer annular casing 11 and a downstream impeller comprising an annular row of blades 10 inside the outer annular casing 11.
- Each annular row of moving blades 10 or stationary blades 12 comprises an internal platform 13 and an external platform 14 delimiting an annular stream of gas flow through the compressor 3, 4 or the turbine 6, 7.
- the radially outer face of the outer platform 14 of each blade 10 comprises wipers 15 cooperating in sealing with an abradable element 16 annular, mounted in a ring 17.
- the outer ring 17 has a groove opening radially inwards, in which the abradable element 16 is mounted.
- the outer ring 17 is carried by the outer annular casing 11.
- the radially inner face of the inner platform 13 of each annular row of stationary vanes 12 comprises an annular groove receiving an abradable element 16 annular.
- the abradable element 16 cooperates in sealing with wipers 15 of the shaft 9 of the turbomachine 1.
- the abradable element 16 generally comprises a honeycomb structure, also called a honeycomb structure, into which the wipers 15 penetrate due to differential thermal expansions and mechanical deformations in operation. Following prolonged use, the abradable element 16 wears out and then needs to be changed.
- the present disclosure aims to remedy this drawback, in a simple, reliable and inexpensive manner.
- the invention relates to a method for mounting an annular abradable element in an annular groove of a member of a turbomachine, the annular abradable element extending along an axis and comprising a honeycomb structure, the groove opening out at the radially inner periphery of said member, the method comprising the steps consisting in:
- Such a method due to the deformation of the abradable element in a plane perpendicular to the axis of the undeformed annular abradable element, makes it possible to apply a normal force, that is to say in the direction of extension of the cells, at any point of the abradable element and thus makes it possible to avoid the phenomena of degradation of said abradable element by crushing of the cells of said element.
- the process is also relatively easy and quick to implement, in addition to being reproducible.
- the abradable element can be annularly closed around the axis.
- the abradable element can be axisymmetric around the axis.
- the abradable element can be cylindrical of revolution along the axis.
- a section of the abradable element in a perpendicular cutting plane can have the shape of a closed ring.
- the latter In the constrained and deformed position of the abradable element, the latter may have a bean shape. In other words, in a constrained and deformed position of the abradable element, the latter may have a deformed part in the shape of an omega and an undeformed rounded part.
- Such a shape makes it possible to reduce the dimensions of the abradable element so as to allow the insertion of said deformed abradable element inside the member comprising the groove, while avoiding bending zones having radii of curvature too weak.
- the abradable element in the constrained and deformed position, may have a maximum radius of curvature less than a radius of the throat of the member allowing it to be inserted without forcing it into the throat.
- such a kidney shape makes it possible to avoid too small a radius of curvature which would risk causing certain cells to be crushed and therefore degradation of the abradable element.
- such a kidney shape is also compatible with a deformation of the annular element in a plane.
- the device may comprise a first presser member and a second presser member arranged on either side of a support base, each presser member being connected to the support base by a connecting rod comprising a first end mounted pivoting relative to the support base and a second end supporting the corresponding presser member, the support base and the presser members each comprising a curved lateral support surface, said lateral support surface of the base of bearing bearing against an external surface of the abradable element, said lateral bearing surfaces of the pressing members bearing against an internal surface of the abradable element, the deformation of the abradable element being obtained by pivoting of the connecting rods by relative to the support base and displacement of the rods relative to each other.
- the shapes of the curved bearing surfaces make it possible to control the radii of curvature of the abradable element thus deformed.
- the deformation of the abradable element may consist of rolling the abradable element around the curved support surface of the support base, by displacement of the pressing members.
- the curved bearing surfaces can be cylindrical in shape or in the shape of a portion of a cylinder.
- the pressing members are for example formed by rollers.
- the bearing surface of the base can be a cylinder portion extending over an angular range greater than 120° for example.
- the bearing surface of the base can be semi-cylindrical.
- the device may be symmetrical with respect to a plane of symmetry passing through a center of the support base, the presser members and the connecting rods being located on either side of said plane of symmetry, the step aiming to constraining the abradable element being carried out by symmetrical displacement of the pressing members and the connecting rods with respect to said plane of symmetry.
- the forces to be applied to the pressing members to deform the abradable element around the base can then be equal.
- the pressing members Before deformation of the abradable element, the pressing members can be located on one side of a plane perpendicular to the plane of symmetry and passing through the center of the support base and in which, after deformation of the abradable element, the pressing members are located, at least partly on the other side of said plane perpendicular to the plane of symmetry.
- Each pressing member can be pivotally mounted with respect to the second end of the corresponding connecting rod, each pressing member rolling on the internal surface of the abradable element when the connecting rods move relative to the support base.
- a gripping handle can be mounted on each rod, said rods being moved manually.
- the device may include means for engaging the rods with each other, said gear means providing symmetrical movement of said rods with respect to a plane of symmetry passing through the support base.
- the first end of each link may comprise a toothed part meshing with the toothed part of the opposite link, the movement of one of the links causing the movement of the other link.
- the device may comprise abutment means capable of limiting the displacement of the presser members and the connecting rods during the deformation of the abradable element.
- the abutment means make it possible to avoid over-deformation of the abradable element, so as to avoid its degradation and crushing of the cells.
- Such a stop can be formed, for each link, by a member projecting from the base, for example a rod, the link being capable of coming to rest on said projecting member.
- Such a stop can be formed, for each connecting rod, by a lug extending laterally from the corresponding connecting rod, the lugs of each connecting rod being adapted to bear against one another when the connecting rods move. one relative to the other.
- the device may comprise locking means capable of immobilizing each presser member in position with respect to the support base.
- the locking means thus make it possible to maintain the abradable element in the deformed position after displacement of the pressing members, so as to facilitate the implementation of the method, in particular when this method is implemented manually.
- the locking means may comprise at least one ratchet wheel.
- Said ratchet wheel may comprise a toothed wheel comprising teeth, secured to the base or respectively to one of the connecting rods, and a pawl, part of which engages the teeth of the toothed wheel, the pawl being pivotally mounted on one connecting rods, or respectively on the base, the meshing of the pawl with the toothed wheel allowing the rotation of the connecting rod relative to the support base in a direction of rotation but preventing the rotation of the connecting rod relative to the base of support in the opposite direction of rotation.
- the direction of rotation authorized corresponds to the movement of the rods from the undeformed position of the abradable element to the deformed position of the abradable element.
- the pawl can be subjected to the action of an elastic return member tending to apply the meshing part of the pawl to the teeth of the toothed wheel.
- the elastic return member may be a torsion spring.
- the ratchet wheel can be disengaged so as to prevent the pawl from meshing with the toothed wheel, in particular when an operator wants to move the rods from the deformed position of the abradable element to the non deformation of said element.
- the pawl may include an actuating rod for manual disengagement of the ratchet wheel by an operator. In other words, an operator can separate the pawl from the teeth of the ratchet wheel using the actuating rod, against the return force exerted by the elastic return member, way to disengage the ratchet wheel.
- the teeth of the ratchet wheel can be shaped to allow disengagement of the ratchet wheel only after the abradable element has been preloaded. Thus, the return of the abradable element to the undeformed position is secured.
- each connecting rod with a ratchet wheel has the advantage of requiring an operator to have one hand on each handle when disengaging and returning the abradable element to the undeformed position, thus minimizing the risk of accidents and injuries.
- the invention also relates to a device for implementing the method as described above.
- Figure 1 is a half view in axial section of a turbomachine of the prior art
- Figure 2 is an axial sectional view of part of a turbine of the prior art
- Figure 3 is an axial sectional view of part of a compressor of the prior art
- Figure 4 is a front view of the device allowing the implementation of the method, in the undeformed position of the abradable element
- Figure 5 is a side view of the device of Figure 4.
- Figure 6 is an exploded view, in perspective, of the device of Figures 4 and 5;
- Figure 7 is a view illustrating the meshing of the links of the device of Figures 4 to 6;
- Figure 8 comprises Figures 8a, 8b and 8c illustrating the different successive positions of the pawl and the toothed wheel of the locking means of the device of Figures 4 to 6;
- Figure 9 is a functional diagram of the method of mounting an abradable element in an annular groove of a turbomachine, in accordance with the method according to the invention.
- Figure 10 is a front view illustrating the device of Figures 4 to 6 positioned on the undeformed abradable element
- Figure 11 is a front view illustrating a step of the method during which the abradable element is deformed
- Figure 12 is a front view illustrating the abradable element in a constrained and deformed position by the device of Figures 4 to 6;
- Figure 13 is a view illustrating a step of the method in which the deformed abradable element is positioned facing the annular groove of the turbomachine member;
- Figure 14 is a front view illustrating a step of the method during which the abradable element is released to extend inside the annular groove. Description of embodiments
- Figures 4 to 8 show a device 20 suitable for a method of mounting an abradable element 16 in an annular groove of a member 21 of turbomachine 1.
- the device 20 comprises a first pressing member 22 and a second pressing member 22.
- the device 20 also includes a support base 23.
- the first and second pressing members 22 are arranged on either side other of the support base 23.
- the support base 23 and the pressing members 22 each have a lateral support surface 24 that is curved.
- the pressing members 22 are here each formed by a roller.
- the support surface 24 of the support base 23 is here a cylinder portion extending over approximately 180°.
- the base 23 also comprises a side surface opposite the support surface 24. The opposite side surface is flat here.
- Each presser member 22 is connected to the support base 23 by a connecting rod 25 comprising a first end pivotally mounted, around a first axis A1, with respect to the support base 23 and a second end supporting the corresponding presser member 22.
- the first end of each connecting rod 25 is mounted on a first rod 26, formed for example by a screw, fixed to the support base 23 and extending along the corresponding first axis A1.
- the device 20 is symmetrical with respect to a plane of symmetry P1 passing through a center of the support base 23.
- the presser members 22 and the rods 25 are located on either side of the plane of symmetry P1.
- each first axis A1, around which the corresponding rod 25 pivots is parallel to the plane of symmetry P1.
- the pressing members 22 can be moved at least in part between a first side c1 of a plane P2 perpendicular to the plane of symmetry P1 and passing through the center of the support base 23, and a second side c2 of the plane perpendicular P2 to the plane of symmetry P1.
- Each presser member 22 is also pivotally mounted with respect to the second end of the link 25 corresponding.
- Each presser member 22 is in particular pivotally mounted around a corresponding second axis A2 of revolution. To this end, each presser member 22 is mounted on a second rod 27 fixed to the corresponding connecting rod 25 and extending along the second axis A2 of revolution of the corresponding presser member 22.
- the device 20 further comprises a gripping handle 28 mounted on each link 25.
- Each handle 28 is in particular rigidly mounted on the link 25 corresponding.
- each handle 28 is screwed onto the corresponding rod 25.
- the rods 25 can be pivoted manually relative to the support base 23, using the handles 28.
- the device 20 also comprises means for engaging the rods 25 with each other.
- the gear means are more particularly visible in Figures 6 and 7.
- the first end of each link 25 may include a toothed part 29 meshing with the toothed part 29 of the opposite link 25.
- the teeth are arranged, at the first end of each link 25, in an arc of a circle around the first axis A1 of the corresponding link 25.
- the first end of each connecting rod 25 forms a half-toothed wheel.
- the device 20 further comprises abutment means capable of limiting the movement of the presser members 22 and the links 25.
- the stops are each formed by a lug 30 extending laterally from one of the links 25.
- the lugs 30 of the rods 25 bear against each other when the rods 25 are pivoted from the first side c1 to the second side c2 of the plane P2 perpendicular to the plane of symmetry P1 of the device 20.
- the device 20 also comprises locking means visible in FIG. 6.
- the locking means are able to immobilize each presser member 22 in position with respect to the support base 23.
- the locking means here comprise two ratchet wheels 31.
- Each ratchet wheel 31 comprises a toothed wheel 32 comprising teeth 33.
- Each toothed wheel 32 is here integral with the support base 23, in particular via of one of the first rods 26.
- Each toothed wheel 32 is thus centered on one of the first axes A1.
- the toothed wheels 32 of the ratchet wheels 31 are also secured together by a plate 34, screwed into each of the toothed wheels 32.
- Each ratchet wheel 31 also includes a pawl 35, part of which engages the teeth 33 of one of the toothed wheels 32.
- Each pawl 35 is here pivotally mounted on one of the links 25.
- the teeth 33 of each toothed wheel 32 are uniform but asymmetrical, each tooth 33 having a moderate slope 40 on one edge and a steep slope 41 on the other edge.
- the meshing of the pawl 35 with the teeth 33 of the corresponding toothed wheel 32 is such that it allows the pivoting, in one direction, of the link 25 carrying the pawl 35 and prevents the pivoting of the link 25 in the direction of opposite rotation.
- the authorized direction of rotation corresponds to the displacement of the rods 25 from the first side c1 of the plane P1 perpendicular to the plane of symmetry P2 towards the second side c2 of the plane P2 perpendicular to the plane of symmetry P1 of the device 20.
- Figure 8a shows the pawl 35 at the bottom of the tooth or at the level of the steep slope 41 of one of the teeth 33.
- a rotation of the rod 25 carrying the pawl 35 in the opposite direction is prevented by the steep slope 41 of the tooth 33.
- a rotation in the authorized direction is permitted by the sliding of the pawl 35 on the moderate slope 40 of the adjacent tooth 33.
- Figure 8b shows the sliding of the pawl 35 on the moderate slope 40 of the tooth 33.
- Figure 8c shows the pawl 35 again at the bottom of the tooth and spaced by one tooth 33 with respect to the position of the pawl in Figure 8a.
- each pawl 35 is also subjected to the action of an elastic return member tending to apply the meshing part of the pawl 35 to the teeth 33 of the corresponding toothed wheel 32.
- Each elastic return member is here a torsion spring 36.
- a first end of each torsion spring 36 is integral with one of the rods 25.
- a second end of each torsion spring bears, or is integral, with the pawl 25 corresponding.
- Each torsion spring 36 can be constrained so as to prevent the meshing of the pawl 35 on the corresponding toothed wheel 32.
- the corresponding ratchet wheel 31 is then disengaged so as to allow the pivoting of the respective connecting rod 25 in the direction of rotation opposite to the direction of rotation authorized by the ratchet wheel 31.
- Each pawl 35 comprises an actuating rod 37 for a manual release of the ratchet wheel 31.
- Figures 9 to 14 show a method 100 of mounting an abradable element 16 in an annular groove of a member 21 of the turbomachine 1 by means of a device 20 in accordance with Figures 4 to 8.
- the member 21 turbomachine 1 can be an outer ring 17 or an inner platform 13 belonging to a turbine 6, 7 or a compressor 3, 4, as is known from the prior art.
- the annular groove opens out at the radially inner periphery of the member 21 of the turbomachine 1.
- the abradable element 16 is annular in shape and extends along a third axis A3.
- the abradable element 16 also comprises a honeycomb structure and is deformable.
- Figure 9 shows a block diagram of the mounting method 100.
- the assembly method 100 comprises a first step 110 represented in FIG. 10.
- the first step 110 consists in positioning the device 20 so as to bring the lateral support surface 24 of the base 23 into contact with an external surface of the abradable element 16 and the lateral bearing surfaces 24 of the presser members 22 resting on an internal surface of the abradable element 16.
- the presser members 22 are located on the first side c1 of the plane P2 perpendicular to the plane of symmetry P1 of device 20.
- the method 100 comprises a second step 120 consisting in constraining the abradable element 16 so as to deform it, at least in part, in a plane perpendicular to the third axis A3 of the abradable element 16 undeformed, using the device 20.
- the rods 25 are pivoted relative to each other so as to move the pressing members 22 towards the second side c2 of the plane P2 perpendicular to the plane of symmetry P1.
- the links 25 are thus spaced apart from each other with respect to the plane of symmetry P1 in a first phase of the movement.
- the rods 25 are then moved closer to each other with respect to the plane of symmetry P1 in a second phase of the movement.
- the rods 25 are here moved manually, using the handles 28.
- the presser members 22 are located on the first side c1 of the plane P2 perpendicular to the plane of symmetry P1, and after deformation of the abradable element 16, the pressing members 22 are here located on the second side c2 of the plane P2 perpendicular to the plane of symmetry P1 of the device 20.
- the abradable element 16 is deformed so as to surround the curved support surface 24 of the support base 23.
- Such a deformation in a plane perpendicular to the third axis A3 of the undeformed abradable element 16 makes it possible to limit, or even avoid, the crushing of the cells of the abradable element 16. Furthermore, the shapes of the surfaces of support 24 curves make it possible to control the radii of curvature of the abradable element 16 thus deformed. Also, the permitted rotation of the presser members 22 about their respective second axis A2 of revolution allows the presser members 22 to roll on the internal face of the abradable element 16 during the movement of the rods 25 relative to the support base 23 This avoids the friction of the presser members 22 on the internal face of the abradable element 16, so as to avoid any degradation of the abradable element 16.
- the abradable element 16 is deformed into a constrained and deformed position in which the abradable element 16 here has a bean shape, as illustrated in FIG. 12, or even a shape.
- the abradable element 16 is partly deformed to have the shape of an omega (w).
- the abradable element deformed therefore also comprises a rounded part 38 that is not deformed.
- Such a shape makes it possible to reduce the dimensions of the abradable element 16 so as to allow the insertion of the deformed abradable element 16 inside the member 21 of the turbomachine 1 comprising the annular groove.
- such a shape makes it possible to avoid bending zones of the abradable element 16 whose radii of curvature are too small.
- the constrained and deformed position of the abradable element 16 here corresponds to a position of the device 20 in which the lugs 30 of the links 25 bear against one another. This ensures the conformity of the deformation of the abradable element 16.
- the method 100 is therefore easy to implement and is reproducible.
- the abutment means make it possible to limit the movement of the presser members 22 and the connecting rods 25 during the deformation of the abradable element 16. The abutment means then make it possible to avoid over-deformation of the abradable element 16, so as to avoid its degradation and crushing of the cells.
- the locking means of the device 20 here allow a rotation of the links 25 from the undeformed position of the abradable element 16 to the deformed position of the abradable element 16. A rotation in the opposite direction is locked by the ratchet wheels 31 .
- the constrained and deformed position of the abradable element 16 is maintained by the locking means. This facilitates the handling of the abradable element in the constrained and deformed position, in particular when the method 100 is implemented manually.
- the method 100 comprises a third step 130 consisting of axially positioning the abradable element 16 in a constrained and deformed position facing the annular groove, inside the member 21 of the turbomachine. 1 .
- the deformed abradable element 16 can be positioned so that the third axis A3 of the undeformed abradable element 16 coincides with an axis of revolution of the annular groove of the member 21 of the turbomachine 1 .
- the abradable element 16 can be arranged partly inside the annular groove.
- the undeformed rounded portion 38 of the deformed abradable element 16 can in particular be engaged inside the annular groove of the member 21 of the turbomachine 1.
- the method 100 then comprises a fourth step 140 represented in FIG. 14.
- the fourth step 140 consists in releasing the abradable element 16 so that it is inserted into the groove and regains its annular shape there.
- each ratchet wheel 31 of the device 20 is disengaged by the operator using the corresponding rod 37, so that the operator can move the rods 25 from the deformed position of the abradable element 16 to the undeformed position of abradable element 16.
- an operator can separate the pawl 35 from the teeth 33 of the toothed wheel 32 of each ratchet wheel 31 using the actuating rod 37, against the force of return exerted by the elastic return member, so as to disengage the ratchet wheel 31. Then, the operator can move the rods 25 towards the undeformed position of the abradable element 16 by holding the pawl 35 each ratchet wheel 31 at a distance from the teeth 33 of the toothed wheel 32.
- the invention is not limited to the examples described above and is capable of numerous variants.
- the support base 23 can be fixed to a support such as a table.
- the abradable element 16 can be deformed asymmetrically.
- the connecting rods 25 may have an asymmetrical movement with respect to the support base 23.
- the device 20 may comprise a motorization which actuates the rotation of the connecting rods.
- the device 20 may comprise a support base 23 and rollers 22 having a different profile and/or size.
- the device 20 may comprise a system for reducing the force required to move the presser members 22 and the rods 25 relative to the support base 23.
- a system may, for example, being a gear reducer.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2104675A FR3122668B1 (fr) | 2021-05-04 | 2021-05-04 | Procédé de montage d’un élément abradable comprenant une structure alvéolaire dans une gorge annulaire d’un organe de turbomachine |
| PCT/FR2022/050710 WO2022234205A1 (fr) | 2021-05-04 | 2022-04-14 | Procédé de montage d'un élément abradable comprenant une structure alvéolaire dans une gorge annulaire d'un organe de turbomachine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4334572A1 true EP4334572A1 (fr) | 2024-03-13 |
| EP4334572B1 EP4334572B1 (fr) | 2026-03-04 |
Family
ID=76601383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22722316.1A Active EP4334572B1 (fr) | 2021-05-04 | 2022-04-14 | Procédé de montage d'un élément abradable comprenant une structure alvéolaire dans une gorge annulaire d'un organe de turbomachine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12168935B2 (fr) |
| EP (1) | EP4334572B1 (fr) |
| CN (1) | CN117295877A (fr) |
| FR (1) | FR3122668B1 (fr) |
| WO (1) | WO2022234205A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0216952D0 (en) * | 2002-07-20 | 2002-08-28 | Rolls Royce Plc | Gas turbine engine casing and rotor blade arrangement |
| DE102009004934B4 (de) * | 2009-01-16 | 2021-08-26 | MTU Aero Engines AG | Verfahren zur Montage eines integralen Innenrings eines Turboverdichterstators |
| JP6184173B2 (ja) * | 2013-05-29 | 2017-08-23 | 三菱日立パワーシステムズ株式会社 | ガスタービン |
| US9273611B2 (en) * | 2014-07-22 | 2016-03-01 | Siemens Energy, Inc. | Method and apparatus for improved turbine bellyband rotor seal machining, installation and life |
| US10113447B2 (en) * | 2014-12-12 | 2018-10-30 | Rolls-Royce Plc | Fan casing arrangement for a gas turbine engine |
| DE102015202070A1 (de) * | 2015-02-05 | 2016-08-25 | MTU Aero Engines AG | Gasturbinenbauteil |
| US11215070B2 (en) * | 2019-12-13 | 2022-01-04 | Pratt & Whitney Canada Corp. | Dual density abradable panels |
| FR3116860B1 (fr) * | 2020-11-27 | 2026-01-30 | Safran Aircraft Engines | Installation et procede pour l’assemblage des distributeurs d’une turbine |
-
2021
- 2021-05-04 FR FR2104675A patent/FR3122668B1/fr active Active
-
2022
- 2022-04-14 US US18/558,840 patent/US12168935B2/en active Active
- 2022-04-14 WO PCT/FR2022/050710 patent/WO2022234205A1/fr not_active Ceased
- 2022-04-14 CN CN202280034682.0A patent/CN117295877A/zh active Pending
- 2022-04-14 EP EP22722316.1A patent/EP4334572B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN117295877A (zh) | 2023-12-26 |
| FR3122668A1 (fr) | 2022-11-11 |
| US12168935B2 (en) | 2024-12-17 |
| WO2022234205A1 (fr) | 2022-11-10 |
| EP4334572B1 (fr) | 2026-03-04 |
| FR3122668B1 (fr) | 2023-05-26 |
| US20240240567A1 (en) | 2024-07-18 |
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