EP2734710A1 - Verfahren zur herstellung eines einlaufbelags, einlaufsystem, strömungsmaschine sowie leitschaufel - Google Patents
Verfahren zur herstellung eines einlaufbelags, einlaufsystem, strömungsmaschine sowie leitschaufelInfo
- Publication number
- EP2734710A1 EP2734710A1 EP12759627.8A EP12759627A EP2734710A1 EP 2734710 A1 EP2734710 A1 EP 2734710A1 EP 12759627 A EP12759627 A EP 12759627A EP 2734710 A1 EP2734710 A1 EP 2734710A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inlet
- ring
- blade
- lining
- row
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/006—Arrangements of brakes
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/04—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Definitions
- the invention relates to a method for producing an inlet lining for a turbomachine for braking a rotor at a shaft break according to the preamble of patent claim 1, an inlet system with such inlet lining, a turbomachine with such inlet system and a guide vane with such inlet lining.
- a circumferential toothed rim is arranged in the downstream hub region of a blade row, which engages in a guide blade-side inlet lining during shaft breakage.
- This intake system relieves the blades of the vanes, however, a plurality of punctiform contacts between the tooth profile and the inlet lining are also created by the ring gear.
- the production of this intake system can be done by mechanical processing. Alternatively, the sprocket and the inlet lining can be applied later. Both the mechanical processing, as well as the subsequent tying also represent time-consuming production variants.
- the object of the invention is to provide a method for producing an inlet lining for a turbomachine for decelerating a rotor at a shaft break, which eliminates the aforementioned disadvantages and is easy to perform. Furthermore, it is an object of the invention to provide an intake system with an inlet lining, which allows a targeted braking of a broken shaft, a turbomachine, the rotor is controlled braked at a Wellenruch, as well as to provide a guide vane with an inlet lining.
- the inlet lining is formed as an integral generative blade section in the case of a generative production of the blade.
- the integral generative design of the inlet lining is formed in one step with the blade, whereby a subsequent connection or training of the inlet lining deleted.
- the generative production of the inlet lining also allows a flexible shape and in particular a shape and positioning that allows optimal deceleration and optimal guidance of the rotor.
- the generative production allows adjustment of individual process parameters for the formation of the inlet lining.
- This allows the inlet lining with a other internal structure or material structure than the actual blade and thus provided with their own specific properties.
- the material structure and thus the structural stability of the inlet lining and the blade can thus be optimally adapted to the particular technical requirements to be met despite a uniform material.
- a generative auxiliary structure can be built up during the production of the blade, which is removed after the production of the blade.
- the auxiliary structure is, for example, co-built as a blade stabilizing needles.
- An inlet system has a multiplicity of integral, preferably generatively produced inlet coverings which form a closed or open inlet ring with a chamber-like material structure extending over a row of blades.
- “Chamber-like” means a porous, cellular, honeycomb, skeletal, truss-like and similar material structure
- "chamber-like” means a structurally weaker internal structure than a runner receiving support structure and a slip element entering the run-in pads, such as a slip ring.
- “Closed” means, according to the wording of the invention, a circumferentially closed formation of the run-in ring, with parting gaps adjacent intake linings are so small that they can be neglected or are closed by means of corresponding adapters, because of the closed or circumferential design a circumferential braking surface and F currency area created, enabling safe and rapid braking and thus at least greatly reduced damage to the rotor and housing structure.
- the chamber-like material structure prevents cracks from being introduced into a blade section receiving the inlet lining. Furthermore, the chamber structure reduces the introduction of heat when rubbing into the row of blades.
- "Open" according to the wording of the invention, means a spacing of the inlet coverings in the circumferential direction.
- the inlet ring is formed on the outer side of the cover band.
- the risk of damage to the rotor in essential areas and thus a risk to the integrity of the rotor is minimized.
- An influence on the rotating mass of the rotor through the inlet ring can be prevented if the inlet ring is arranged on a row of guide vanes.
- this is arranged on the front sides of outer shrouds of the guide vanes.
- an open inlet ring this is arranged at leading edges of vanes.
- the chamber-like material structure of the inlet ring also allows rear sides of outer shrouds of a blade row act as a slip ring, which is pressed against the inlet ring during shaft break. A special education or hardening of the rear sides as well as separate grinding elements are not necessary. Since the rear sides are flat, the largest possible contact area is created when the slip ring comes to rest on the inlet ring, which accelerates the deceleration in particular.
- the inlet ring may have different local material structures.
- the inlet ring can, for example, be subdivided into layers which, in terms of structure, are optimally adapted to individual deceleration phases.
- a front layer can serve as a damping layer for absorbing shock during emergence of the slip ring on the inlet ring and have a correspondingly soft material structure.
- a rear layer may have a solid material structure for optimizing deceleration.
- the inlet ring may have different cross sections and thus . be adapted alternatively or in combination with the local material structure to the respective technical requirement.
- an annular region of the inlet ring can be designed as a predetermined breaking point. leads to be reached at unexpectedly high forces fastest possible deceleration of the rotor in case of destruction of intact Rotorstnikturabête.
- a turbomachine according to the invention has an intake system with an integral, preferably generatively produced, inlet ring and a slip ring for running on the inlet ring in a shaft break, wherein the inlet ring is arranged in the front region of a row of vanes and has a chamber-like material structure, and the slip ring in a Inlet ring opposite upstream rear portion of a blade row is formed.
- Such a turbomachine is characterized by an optimal guidance and deceleration of a rotor at a shaft break. A risk of the housing of the turbomachine penetrating debris is prevented or at least greatly reduced.
- a guide vane according to the invention has an integral inlet lining in a front region, which has a chamber-like material structure and thus enables at least optimal kinetic energy reduction.
- the inlet lining is arranged on a front side of an outer cover tape and formed closed over the circumference, whereby a maximum friction surface between the inlet lining and the inlet ring is formed.
- the inlet lining is arranged radially on the outside on a front edge of an airfoil and thus formed open.
- the inlet lining is arranged virtually in front of the blade. This is achieved in one embodiment in that the inlet lining is displaced upstream or forms an edge section of the front edge, which is displaced upstream compared to a radially inner edge section.
- the front edge is step-shaped, wherein the blade through the inlet lining radially outward has a greater axial Warre- ckung than radially inside.
- this results in an axial distance between the running reduced blades and the vanes, whereby a frictional contact is made quickly and a quick deceleration is initiated.
- FIG. 1 shows a partial section through a turbomachine with a first embodiment of an inlet system according to the invention
- FIG. 2 shows an axial plan view of a front region of a row of guide vanes
- FIG. 3 shows a side detail of the front area
- FIG. 4 shows a plan view of a blade row in the region of its outer trailing edges
- Figure 7 shows a method for producing an inlet lining according to the invention.
- FIG. 8 shows a partial section through a turbomachine with a second embodiment of the inventive inlet system
- the partial section in Figure 1 shows a side view of a blade 2 and an adjacent downstream vane segment 4 of a rotor in the compressor of an aircraft engine.
- the blade 2 forms with a plurality of other blades a blade ring or a blade row, which has a foot-side hub 6 and a receiving disc is arranged on a shaft 10 rotating about a rotation axis 8.
- the rotor blades 2 each have an airfoil 12, which is arranged in an annular space between an inner shroud 14 and an outer shroud 16 of the rotor blade 2.
- the shrouds 14, 16 each define the annulus flowed through by a main flow and each have an oppositely oriented front side 18 to the flow direction and a rear side 20 oriented in the flow direction.
- the guide vanes 4 are fixed in position in this embodiment in each case with their foot sections 24a, 24b in a housing-side receptacle.
- the vanes 4 are integrally contained or bolted to the housing. They each have, according to the blades 2, an airfoil 22 disposed in the annulus between an inner shroud 26 and an outer shroud 28 of the vanes 4, each having an upstream-oriented front 30 and a downstream-oriented rear 32.
- a plurality of airfoils 22 are disposed between each of an inner shroud 26 and an outer shroud 28.
- an intake system 34 for guiding and braking the rotor in the event of shaft breakage.
- the intake system 34 has an inlet ring 36 arranged in the front region of the vane row and an opposite slip ring 38 arranged in the rear region of the upstream blade row, which are spaced apart in the axial direction with the rotor undamaged.
- the inlet ring 36 and the slip ring 38 are closed in this first embodiment over the circumference.
- the inlet ring 36 is formed by a plurality of preferably generative inlet liners 40 each formed on the front sides 30 of the outer shrouds 28 as integral blade sections and laterally spaced apart by a narrow circumferential gap 42a, 42b. For reasons of clarity, only two circumferential gaps 42a, 42b are shown, which can be closed via corresponding adapters. JE The inlet lining 40 thus forms a ring segment of the inlet ring 36 and covers only a radially inner region of the front sides 30.
- the inlet coverings 40 have a chamber-like material structure.
- “Chamber-like” here means a porous, cellular, honeycomb, skeletal, truss-like and similar material structure
- "chamber-like” means a structurally weaker internal structure than the inlet lining 40 receiving support structure and a running into the inlet linings 40 grinding element as the slip ring 38. They go with a the annular space facing materisfiambae 44 flush in a the annular space facing cylindrical or conical shroud surface 46 on. They have a maximum radial extent which corresponds to a radial extension or thickness of the outer cover strips 16 of the rotor blades 2 in the region of their trailing edges 20 (see FIGS. 5 and 6).
- the slip ring 38 indicated in FIG. 4 is formed by the outer rear sides 20 of the guide shaft 2.
- the blades 2 are also each spaced from each other by a small circumferential gap 42a, 42b, which may be closed via corresponding adapters.
- the slip ring 38 is made of a harder material such as the inlet ring 36 and thus leads to a removal of the inlet ring 36 at a shaft break.
- the rotor blades 2 run over their slip ring 38 and thus directly over their rear sides 20 forming the slip ring 38 according to the arrow in the flow direction onto the inlet ring 36 of the guide vanes 4.
- the slip ring 38 rubs into the inlet lining 36, whereby the rotor brakes and the inlet ring 36 as shown in Figure 6 at least partially abraded or abraded.
- the inlet ring 36 has such a chamber-like material structure and such an extent in the axial direction that a direct emergence of the outer shrouds 16 of the blades 2 with their rear sides 20 on the front sides 30 of the outer shrouds 28 of the guide vanes 4 is prevented. A fragmentation of the blades 2 / or the guide vanes 4 is thus effectively prevented
- the run-in pads 40 become integral with the respective vane 4 produced by a generative process.
- a suitable metal powder is applied in layers to a base plate 48 and generates a hatched highlighted auxiliary structure 50 by means of a high-energy beam such as an electron beam or a laser beam.
- the high-energy beam is guided in tracks over the upper powder layer, whereby it is melted and connected to the preceding powder layer.
- the auxiliary structure 50 allows a compensation of, for example, unevenness of the base plate 48 and a stepwise structure of overlying structures and thus the creation of a defined reference plane for the respective vane 4.
- the auxiliary structure 50 acts as a support for stabilizing the vane 4 in the generative production.
- the respective guide vanes 4 is constructed by changing the process parameters lying from the front 30 to the rear side 32 with the integrated inlet lining 40 generative layers. After the complete construction of the respective guide blade 4, it is separated from the auxiliary structure 50.
- the chamber-like material structure of the inlet coverings 38 is produced by a variation of the manufacturing parameters and thus with individualized process parameters compared to the other blade sections such as the foot sections 24a, 24b, the shrouds 26, 28 and the blade segments 22 or in blade segments.
- FIG. 8 shows a second exemplary embodiment of the intake system 34 according to the invention.
- an inlet ring 36 is arranged at leading edges 52 of the blades 22 of the guide vanes 4 and thus formed open over the circumference of the guide blade row.
- the inlet linings 40 forming the inlet ring 36 are provided radially on the outside and thus in the area of an opposite slip ring 38 with their greatest axial extent. They have an above-described chamber-like or zellulläre, porous, honeycomb-like and similar material structure and are formed generatively with the guide vanes 4.
- the material structure of the other airfoil region 54 is conventional and thus provided with a structurally harder internal structure than the inlet lining 40.
- the inlet linings 40 are arranged, as it were, in front of the respective airfoil 22, as a result of which the leading edges 52 each have an edge portion 56 which is radially outward or near the outer edge is disposed upstream relative to a radially inner edge portion 58.
- the front edge 52 is thus formed like a step.
- slip ring 38 of the upstream blade row is identical to the slip ring 38 according to the first embodiment.
- Slip ring 38 is thus likewise formed by outer-side end faces 20 of the upstream blade row and consists of a harder material than the inlet ring 36.
- the mode of operation is the same as in the first exemplary embodiment.
- the rotor blades 2 run over their slip ring 38 and thus directly over their rear sides 20 forming the slip ring 38 onto the open inlet ring 36 of the guide vanes 4.
- the slip ring 38 rubs into the inlet lining 36 or partially wears it off, as a result of which the rotor is braked.
- the inlet ring 36 has such a chamber-like material structure and such an extent in the axial direction that a direct emergence of the outer cover strips 16 on the airfoil region 54 is prevented. A fragmentation of the blades and / or vanes is thus effectively prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011110927 | 2011-07-20 | ||
| DE102011086775A DE102011086775A1 (de) | 2011-07-20 | 2011-11-22 | Verfahren zur Herstellung eines Einlaufbelags, Einlaufsystem, Strömungsmaschine sowie Leitschaufel |
| PCT/DE2012/000731 WO2013010529A1 (de) | 2011-07-20 | 2012-07-18 | Verfahren zur herstellung eines einlaufbelags, einlaufsystem, strömungsmaschine sowie leitschaufel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2734710A1 true EP2734710A1 (de) | 2014-05-28 |
| EP2734710B1 EP2734710B1 (de) | 2017-11-29 |
Family
ID=47502001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12759627.8A Not-in-force EP2734710B1 (de) | 2011-07-20 | 2012-07-18 | Verfahren zur herstellung eines einlaufbelags sowie leitschaufel |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9840919B2 (de) |
| EP (1) | EP2734710B1 (de) |
| DE (1) | DE102011086775A1 (de) |
| ES (1) | ES2652455T3 (de) |
| WO (1) | WO2013010529A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011108957B4 (de) * | 2011-07-29 | 2013-07-04 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen, Reparieren und/oder Austauschen eines Gehäuses, insbesondere eines Triebwerkgehäuses, sowie ein entsprechendes Gehäuse |
| DE102013205883B4 (de) * | 2013-04-03 | 2020-04-23 | MTU Aero Engines AG | Anordnung aus Leitschaufelsegmenten und Verfahren zur Herstellung einer derartigen Anordnung |
| DE102013205915A1 (de) * | 2013-04-04 | 2014-10-23 | MTU Aero Engines AG | Glättungsverfahren für Oberflächen von generativ hergestellten Bauteilen |
| DE102014208040B4 (de) * | 2014-04-29 | 2019-09-12 | MTU Aero Engines AG | Lagerkäfig und Lagereinrichtung mit einem derartigen Lagerkäfig sowie Verfahren zum Ausbilden, Reparieren und/oder Austauschen eines solchen Lagerkäfigs |
| DE102014208801A1 (de) * | 2014-05-09 | 2015-11-12 | MTU Aero Engines AG | Dichtung, Verfahren zur Herstellung einer Dichtung und Strömungsmaschine |
| DE102015202070A1 (de) | 2015-02-05 | 2016-08-25 | MTU Aero Engines AG | Gasturbinenbauteil |
| DE102017211316A1 (de) | 2017-07-04 | 2019-01-10 | MTU Aero Engines AG | Turbomaschinen-Dichtring |
| FR3104198B1 (fr) * | 2019-12-04 | 2022-07-22 | Safran Aircraft Engines | Agencement de limitation de survitesse d’une turbine |
| DE102021105624A1 (de) | 2021-03-09 | 2022-09-15 | KSB SE & Co. KGaA | Herstellung eines Leitrades auf hybride Weise |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59202211D1 (de) * | 1991-08-08 | 1995-06-22 | Asea Brown Boveri | Deckblatt für axialdurchströmte Turbine. |
| DE102006004090A1 (de) * | 2006-01-28 | 2007-08-02 | Mtu Aero Engines Gmbh | Leitschaufelsegment einer Gasturbine |
| AT503840B1 (de) * | 2006-06-30 | 2010-09-15 | Facc Ag | Leitschaufelanordnung für ein triebwerk |
| DE102006049216A1 (de) | 2006-10-18 | 2008-04-24 | Mtu Aero Engines Gmbh | Hochdruckturbinen-Rotor und Verfahren zur Herstellung eines Hochdruckturbinen-Rotors |
| FR2916483B1 (fr) | 2007-05-25 | 2013-03-01 | Snecma | Systeme de dissipation d'energie en cas de rupture d'arbre de turbine dans un moteur a turbine a gaz |
| FR2916482B1 (fr) | 2007-05-25 | 2009-09-04 | Snecma Sa | Systeme de freinage en cas de rupture d'arbre de turbine dans un moteur a turbine a gaz |
| EP2429833B1 (de) * | 2009-05-13 | 2016-06-29 | Compagnie Générale des Etablissements Michelin | Reifen mit lamelle mit bereichen verringerter dicke und gerät zu seiner herstellung |
| DE102009036407A1 (de) * | 2009-08-06 | 2011-02-10 | Mtu Aero Engines Gmbh | Abreibbarer Schaufelspitzenbelag |
| DE102009040299A1 (de) * | 2009-09-04 | 2011-03-10 | Mtu Aero Engines Gmbh | Einlaufbelag und Strömungsmaschine |
| DE102009049707A1 (de) * | 2009-10-17 | 2011-07-28 | MTU Aero Engines GmbH, 80995 | Verfahren zur Herstellung einer Lauf- oder Statorschaufel und eine derartige Schaufel |
| DE102009057875A1 (de) * | 2009-12-11 | 2011-06-16 | Mtu Aero Engines Gmbh | Schaufel, insbesondere Leitschaufeln für Verbrennungsturbinen und dessen Herstellung |
-
2011
- 2011-11-22 DE DE102011086775A patent/DE102011086775A1/de not_active Ceased
-
2012
- 2012-07-18 WO PCT/DE2012/000731 patent/WO2013010529A1/de not_active Ceased
- 2012-07-18 EP EP12759627.8A patent/EP2734710B1/de not_active Not-in-force
- 2012-07-18 ES ES12759627.8T patent/ES2652455T3/es active Active
- 2012-07-18 US US14/233,663 patent/US9840919B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013010529A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011086775A1 (de) | 2013-01-24 |
| EP2734710B1 (de) | 2017-11-29 |
| US20140161624A1 (en) | 2014-06-12 |
| ES2652455T3 (es) | 2018-02-02 |
| WO2013010529A1 (de) | 2013-01-24 |
| US9840919B2 (en) | 2017-12-12 |
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