EP0937864A2 - Leitschaufelanordnung für eine axiale Strömungsmaschine - Google Patents
Leitschaufelanordnung für eine axiale Strömungsmaschine Download PDFInfo
- Publication number
- EP0937864A2 EP0937864A2 EP99103156A EP99103156A EP0937864A2 EP 0937864 A2 EP0937864 A2 EP 0937864A2 EP 99103156 A EP99103156 A EP 99103156A EP 99103156 A EP99103156 A EP 99103156A EP 0937864 A2 EP0937864 A2 EP 0937864A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- guide vane
- vane ring
- shroud
- reinforcement
- 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
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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
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
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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
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
- F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
- F05B2230/606—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins using maintaining alignment while permitting differential dilatation
-
- 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
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
Definitions
- the invention relates to a fluid flow machine with a rotor and stator in fluidic terms single or multi-stage design, according to the preamble of the claim 1.
- Such a turbomachine is known for example from DE-PS 27 45 130, this document specifically relates to axial turbines with labyrinth seals.
- the flow channel of the working medium alternately leads through guide vanes and rotating vane rings, the static components protruding radially from the outside and the rotating ones radially from the inside.
- Figure 1 of this document clearly shows, there are both radially inside seals between the rotor and the vane rings ( Inner Airseal ”) as well as seals arranged radially on the outside between the rotor blades and the stator ( Outer Airseal ").
- the sealing fins are the Inner Airseal "is attached to the rotor (item 4), so that their dimensions or dimensional deviations depend on the conditions on the rotor (temperature, speed).
- the associated sealing lining (item 7), on the other hand, is on the inner cover band (item 20)
- the guide vane segments are mounted on the housing (pos. 13, 14), so that the dimensions or dimensional deviations of the sealing layer are ultimately determined by the conditions on the outside of the housing on the other hand, the housing often does not change conformingly at the same time, so that there are gap-changing relative movements between the sealing elements (item 7.8) Outer Airseal "(item 11, 12).
- each segment of a guide vane ring is a mechanical unit on - in the longitudinal section hook-shaped housing elements (item 14 At the upstream end of the outer shroud, each guide vane segment has an edge bead with a groove which engages around the hook-shaped housing element (item 14, 22) in a claw-like manner (see FIG. 3).
- each guide vane segment there is an angled section in longitudinal section with a radially outwardly facing contact surface, which during operation is caused by a flow-induced tilting moment around the upstream one Claw bearing "is pressed against the corresponding hook-shaped housing element (see FIG. 1).
- the hook-shaped housing elements also as Hook rings “identifiable -flows of high density heat flow to the colder housing, the "Hook rings” especially in the area of Claw bearings "can be increasingly plastically deformed by crawling. The only remedy here is permanent cooling of the Hook rings ".
- DE-PS 35 40 943 describes such a gap control system especially for one Dual-flow engine.
- the secondary air duct extends at least up to to the end of the turbine area and has openings (item 11) in its inner wall on, through the secondary air from the outside targeted to areas of the turbine housing can be blown.
- This simplified ACC system may have the problem that the low excess pressure of the secondary air flow is not sufficient to in locally narrow housing zones due to correspondingly small flow cross sections To generate cooling air flows with sufficient mass flow.
- an ACC compressor air from the booster or low pressure compressor branched off as coolant, routed in separate channels and via valves specifically blown out.
- guide vane rings In the case of smaller gas turbine engines, it is known to design guide vane rings as self-supporting, integral components with closed shrouds and to center them in the housing. This is for manufacturing and strength reasons (thermal stresses) monolithic "solution limited to blade rings with relatively small dimensions.
- DE-OS 33 36 420 describes a mechanism for protection against overtightening of a gas turbine rotor in the event of a shaft break.
- the mechanism works in the Way that the guide vane segments axially at least one vane ring pivoted and brought into contact / engagement with adjacent blades become. The mutual mechanical blade friction and destruction slows down the rotor quickly and effectively.
- the vane segments belonging to the mechanism each have a pivot bearing on the outer shroud segment and are on their inner circumference by means of a form-fitting, ring-like reinforcement element connected so that the segments together form a rigid, self-supporting Form the guide vane ring.
- the swivel bearings (positions 36, 56, 58 and 64) provide spoke centering for the intrinsically stable guide vane ring, which contributes to precise positioning / centering reduced thermal voltages.
- a disadvantage is the heat transfer from Hot gas area to the housing (item 34), which also affects the bearing elements are. The resulting high temperatures and temperature gradients in the components this area can significantly reduce the service life.
- the US-PS 3,588,267 protects a guide vane ring construction in plastic construction, in which the blades are attached to a closed, inner torus and form a self-supporting wreath with it.
- the outer blade tips are designed without a cover tape and directly in the recesses of a metallic one Glued housing, the elasticity of the bond small relative shifts balances / absorbs. It is obvious that this design is for higher temperatures is completely unusable and at best in the fan or low pressure compressor area Can be used.
- the invention thus lies in the thermal decoupling of the housing and guide vanes by means of a special design and storage / centering of at least one guide vane ring and by means of air cooling of the housing.
- the - at least one - guide vane ring is designed as a self-supporting component with a reinforcement on the inner shroud, which stiffens it against slipping axial deformation. Starting from an approximately flat, radial alignment of the blade axes in the unloaded state, these are offset by the static pressure difference in front of / behind the guide blade ring during deflection Zero "axially deflected towards the middle of the rim and possibly also curved.
- the guide vane rim is therefore mechanically comparable to a disc spring, the inner edge (hole edge) of which forms the inner cover band and the outer edge of which forms the outer cover band.
- the inner cover band is both axially displaced as well as twisted / inverted due to the blade-induced moments, which means that the material cross-sections of the shroud visible in radial-axial sections are rotated more or less around imaginary axes perpendicular to the cutting surface depending on the rigidity / reinforcement.
- the inventive reinforcement of the inner shroud against said inversion also reduces the axial deflection of the blade axes and thus the overall deformation of the guide vane ring under load. This improves the dimensional stability of the static component Inner Airseal ".
- the at least triple bearing which allows radial movements ( Spoke centering ") of the shroud segments practically does not hinder thermal expansion / contraction and thus also contributes to minimizing tension. In addition, exact centering in the housing is achieved.
- the combination of the guide vane ring construction and bearing arrangement and cooling air ducting according to the invention has the result that the deformation behavior of the ring is mainly determined by the conditions / temperatures in the hot gas, which are also decisive for the rotor behavior. Since the static components of the Inner "- and Outer Airseal "are carried by the guide vane rings and behave in conformity with them, the best possible adaptation of the deformations of the static and rotary sealing components with regard to time course, size and direction is achieved with changing operating conditions (unsteady operation). Thus, the machine can consistently with approximately constant, minimal gaps or leakage losses and thus high efficiency can be achieved, especially in the guide vane area there is no risk of premature component fatigue. The use of brush seals is promoted or even made possible by the conformal behavior of the seal carrier (slight gap change, low eccentricity etc.).
- the present invention is generally for turbomachines with a rotor and stator, i.e. suitable for compressors and turbines, which at least in sections in Axial design, i.e. with predominantly axial flow.
- Axial design i.e. with predominantly axial flow.
- Thermodynamic and due to their size, low-pressure turbines are likely to be medium to large Gas turbine engines are preferred applications, which is why the figure Example from this area shows.
- the first two stages are from the low-pressure turbine 1 and from this in turn the relevant elements of the top half are shown, with the turbine / engine axis would run horizontally below the representation.
- the flow direction of the working gas runs from left to right, i.e. first through the guide vane ring 14, then through the area of the blades 3, then through the guide vane ring 15 and through the area of the moving blades 4, whereby further stages (leading, running) can follow.
- the outer engine casing forms the housing 13 in which the guide vane rings 14, 15 are radially centered and are axially fixed. Both the blades 3,4 and the vane rings 14, 15 are designed with inner and outer cover bands 5 to 8 and 16 to 19, the inner and outer blade shrouds between each the blades have gaps, including damaged blades can be replaced individually are.
- the guide vane rings 14, 15 are designed as self-supporting components, their mechanical stability being achieved predominantly in the area of the inner shrouds 16, 17. There are closed in the circumferential direction, ie circumferential ", reinforcements 20, 21 arranged, which also decisively influence the thermal behavior (changes in shape and shape) of the guide vane rings 14, 15.
- the gas forces during operation cause, among other things, an inverting axial deformation of the guide vane rings, ie an axial deflection increasing from the outer to the inner shroud with some twisting of the shrouds plate spring-like "deformation can be significantly reduced by the reinforcements on the inner cover bands.
- the reinforcements shown are, for example, the toroidal hollow bodies shown, axially spaced rings, combinations of hollow and solid profiles, etc., the space conditions also playing a role.
- the reinforcements should play a role.
- the reinforcements should in any case - in the axial / radial section - have as large a moment of inertia as possible about a radial axis, for example through the center of gravity, which can be achieved by sufficient, axially spaced area portions.
- the area portions of the shroud are to be taken into account here.
- the determination of the stresses and deformations in the Stülpen is possible using relevant calculation methods.
- the reinforcement 20 is positively connected to the shroud 16, the Guide vane ring 14 can consist of several segments, which on the reinforcement be held together.
- the reinforcement 21, however, is in the shroud 17 integrated, i.e. integrally joined with this.
- Guide vane segments are the starting parts, which by welding or Solder in the area of the inner shroud / reinforcement.
- outer shrouds 18, 19 should still be segmented in the installed state be, i.e. have several joints on the circumference to prevent thermal stress minimize.
- the Inner Airseal is - at least predominantly - designed with brush seals, brushes 22, 23 fastened in the area of the guide vane ring reinforcements running against rings 11, 12 connected to the rotor 2, which form axial stops for the rotor blades 3, 4.
- the honeycomb carriers 28, 29 are in turn mounted on the guide vane rings 14, 15 and are therefore adapted to the deformation behavior thereof.
- air cooling is used for the housing and the bearing units the guide vane rings provided, which is not so constructively is complex, like an ACC system.
- an air guide shell 30 is arranged at a radial distance, so that between this and the housing cooling air can flow in the longitudinal direction of the engine.
- the admission the cooling air, which is usually branched off from the compressor, is carried out via bores 35 into a first chamber 33.
- the air guide shell has in the area of the bearing journals 26 and 27 30 deliberately gas-permeable openings 31,32, so that part of the cooling air along the journals 26, 27 in the area of the outer shrouds 18, 19 of the guide vane rings 14.15 can flow, a corresponding pressure drop (Cooling air overpressure) provided.
- This cools the bearings and Heat flows from the vane rings to the housing are minimized.
- the wall element 37 has - not shown - restrictors or forms itself with corresponding ones Throttle columns a restrictor for the cooling air, so that this in the subsequent Chamber 34 enters with reduced pressure. It is sufficient if the cooling air only a moderate overpressure in relation to the working gas in the adjacent one Has flow channel.
- the pressure of the working gas decreases axially, it makes sense to also to reduce the cooling air pressure at least in a few stages, which is here is achieved by the chamber design mentioned with restrictors. High pressures the cooling air would also have a high compressive strength of the air guide shell 30 require, i.e. larger wall thicknesses and more weight.
- Wall elements 36, 38 There are more between the flow channel of the working gas and the cooling air channel Wall elements 36, 38 arranged, which secondary gas flows, i.e. -losses, to prevent through these passages. For cooling reasons, these are also Wall elements 36, 38 deliberately designed or fastened somewhat gas-permeable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
über
26,27 und
ballig, die
aus
sind. All
Claims (6)
- Strömungsmaschine mit Rotor und Stator in strömungstechnisch zumindest abschnittsweise axialer Bauart, deren Rotor Laufschaufeln, und deren Stator ein Gehäuse mit Leitschaufeln aufweist, wobei die Leitschaufeln als mindestens ein Leitschaufelkranz mit einem radial inneren und einem radial äußeren Deckband angeordnet, sind, insbesondere axiale Niederdruckturbine, gekennzeichnet durch die Kombination folgender Merkmale:(A) Mindestens ein Leitschaufelkranz (14,15) ist als selbsttragendes Bauteil mit einer in Umfangsrichtung geschlossenen, zumindest weitgehend rotationssymmetrischen, das Bauteil gegen stülpende Axialverformung versteifenden Verstärkung (20,21) am inneren Deckband (16,17) ausgeführt,(B) der mindestens eine Leitschaufelkranz (14,15) weist ein segmentiertes äußeres Deckband (18,19) mit mehreren über seinen Umfang verteilten Trennfugen auf und(C) er ist über mindestens drei Segmente des äußeren Deckbandes (18,19) mittels jeweils einer örtlich radiale Relativbewegungen zulassenden Lagereinheit (24,25,26,27), d.h. insgesamt über eine sog. Speichenzentrierung mit mindestens drei Speichen, im Gehäuse (13) positioniert, und(D) zwischen dem Gehäuse (13) und dem äußeren Deckband (18,19) des mindestens einen Leitschaufelkranzes (14,15) ist eine Luftleitschale (30) angeordnet, welche einen Kühlluftstrom längs der Gehäuseinnenseite führt und mit Öffnungen (31,32) für die gehäusefesten Lagerelemente (26,27) des mindestens eine Leitschaufelkranzes (14,15) versehen ist, wobei die Öffnungen (31,32) einen Teil des Kühlluftstromes zum Deckband (18,19) hin durchtreten lassen.
- Strömungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Verstärkung (20,21) des mindestens einen Leitschaufelkranzes (14,15) als torusförmiger Hohlkörper oder in Form mindestens zweier axial beabstandeter Ringe ausgeführt und stoffschlüssig in das innere Deckband (17) integriert oder formschlüssig mit diesem (16) verbunden ist.
- Strömungsmaschine nach Anspruch 2 mit formschlüssiger Verbindung zwischen der Verstärkung und dem inneren Deckband des mindestens einen Leitschaufelkranzes, dadurch gekennzeichnet, daß der mindestens eine Leitschaufelkranz (14) aus mehreren Leitschaufelsegmenten besteht, welche mittels der Verstärkung (20) zu einem selbsttragenden Bauteil zusammengefügt sind.
- Strömungsmaschine nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verstärkung (20,21) des mindestens einen Leitschaufelkranzes (14,15) das statische Element einer Wellendichtung trägt, insbesondere die Bürste (22,23) einer Bürstendichtung oder den Einlaufbelag bzw. die Wabenstruktur einer Labyrinthdichtung.
- Strömungsmaschine nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jede Lagereinheit des mindestens einen Leitschaufelkranzes (14,15) aus einem gehäusefesten Lagerzapfen (26,27) mit balliger Kontaktfläche und einer deckbandfesten Lagerbuchse (24,25) mit zylindrischer Kontaktfläche besteht.
- Strömungsmaschine nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Strömungskanal des Kühlluftstromes zwischen Gehäuse (13) und Luftleitschale (30) in mehrere, nacheinander durchströmte Kammern (33,34) mit von Kammer zu Kammer abnehmendem Innendruck aufgeteilt ist, wobei jede Kammer (33,34) für einen Betriebsdruck ausgelegt ist, welcher zumindest geringfügig höher ist als der Druck im jeweils benachbarten Strömungskanalbereich des Arbeitsmediums.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19807247A DE19807247C2 (de) | 1998-02-20 | 1998-02-20 | Strömungsmaschine mit Rotor und Stator |
DE19807247 | 1998-02-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0937864A2 true EP0937864A2 (de) | 1999-08-25 |
EP0937864A3 EP0937864A3 (de) | 2000-10-25 |
EP0937864B1 EP0937864B1 (de) | 2003-08-13 |
Family
ID=7858458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99103156A Expired - Lifetime EP0937864B1 (de) | 1998-02-20 | 1999-02-18 | Leitschaufelanordnung für eine axiale Strömungsmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6139263A (de) |
EP (1) | EP0937864B1 (de) |
JP (1) | JP4230040B2 (de) |
DE (2) | DE19807247C2 (de) |
Cited By (5)
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WO2011018072A3 (de) * | 2009-08-14 | 2011-09-15 | Mtu Aero Engines Gmbh | Befestigungselemente für einen leitschaufelkranz einer strömungsmaschine |
CN103482219A (zh) * | 2013-09-16 | 2014-01-01 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种燃气轮机运输过程中对转子进行轴、径向定位方法 |
EP2719869A1 (de) * | 2012-10-12 | 2014-04-16 | MTU Aero Engines GmbH | Axiale Abdichtung in einer Gehäusestruktur für eine Strömungsmaschine |
EP2796667A1 (de) * | 2013-04-24 | 2014-10-29 | MTU Aero Engines GmbH | Gleitringdichtung |
EP2947281A1 (de) * | 2014-05-14 | 2015-11-25 | MTU Aero Engines GmbH | Gasturbinengehäuseanordnung |
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IT1318103B1 (it) * | 2000-07-03 | 2003-07-23 | Nuovo Pignone Spa | Sistema di connessione tra un ugello di bassa pressione ed untransition duct in una turbina a gas |
DE10037837C2 (de) | 2000-08-03 | 2002-08-01 | Mtu Aero Engines Gmbh | Aufhängung |
JP2002129901A (ja) * | 2000-10-30 | 2002-05-09 | Ishikawajima Harima Heavy Ind Co Ltd | チップシュラウド構造 |
DE10064272A1 (de) * | 2000-12-22 | 2002-07-04 | Alstom Switzerland Ltd | Turbinenschaufel für eine Gasturbine |
DE10122464C1 (de) * | 2001-05-09 | 2002-03-07 | Mtu Aero Engines Gmbh | Mantelring |
US7059821B2 (en) * | 2003-05-07 | 2006-06-13 | General Electric Company | Method and apparatus to facilitate sealing within turbines |
DE10359730A1 (de) | 2003-12-19 | 2005-07-14 | Mtu Aero Engines Gmbh | Turbomaschine, insbesondere Gasturbine |
DE102004016222A1 (de) * | 2004-03-26 | 2005-10-06 | Rolls-Royce Deutschland Ltd & Co Kg | Anordnung zur selbsttätigen Laufspalteinstellung bei einer zwei- oder mehrstufigen Turbine |
GB2448116B (en) * | 2007-04-05 | 2009-05-27 | Rolls Royce Plc | Means for cooling a bearing assembly |
US8090456B2 (en) * | 2008-11-03 | 2012-01-03 | United Technologies Corporation | System and method for design and control of engineering systems utilizing component-level dynamic mathematical model |
US8668434B2 (en) * | 2009-09-02 | 2014-03-11 | United Technologies Corporation | Robust flow parameter model for component-level dynamic turbine system control |
US8315741B2 (en) * | 2009-09-02 | 2012-11-20 | United Technologies Corporation | High fidelity integrated heat transfer and clearance in component-level dynamic turbine system control |
DE102009042029A1 (de) * | 2009-09-17 | 2011-03-24 | Mtu Aero Engines Gmbh | Schaufelkranz für eine Strömungsmaschine |
DE102009052314A1 (de) | 2009-11-07 | 2011-05-12 | Mtu Aero Engines Gmbh | Dichtanordnung für eine Gasturbine und eine derartige Gasturbine |
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DE102011083814A1 (de) | 2011-09-30 | 2013-04-04 | Mtu Aero Engines Gmbh | Segmentiertes Bauteil |
EP2647795B1 (de) | 2012-04-04 | 2018-11-07 | MTU Aero Engines AG | Dichtungssystem für eine Strömungsmaschine |
ES2552474T3 (es) | 2012-04-04 | 2015-11-30 | Mtu Aero Engines Gmbh | Método para la fabricación de un revestimiento |
EP2647796A1 (de) * | 2012-04-04 | 2013-10-09 | MTU Aero Engines GmbH | Dichtungssystem für eine Strömungsmaschine |
KR101480089B1 (ko) | 2012-05-10 | 2015-01-08 | 이병화 | 목재용 앵커 볼트 |
US10975721B2 (en) * | 2016-01-12 | 2021-04-13 | Pratt & Whitney Canada Corp. | Cooled containment case using internal plenum |
IT201900014724A1 (it) | 2019-08-13 | 2021-02-13 | Ge Avio Srl | Elementi di trattenimento delle pale per turbomacchine. |
IT201900014736A1 (it) | 2019-08-13 | 2021-02-13 | Ge Avio Srl | Elementi di tenuta integrali per pale trattenute in un rotore a tamburo esterno anulare girevole in una turbomacchina. |
IT201900014739A1 (it) | 2019-08-13 | 2021-02-13 | Ge Avio Srl | Elementi di trattenimento delle pale per turbomacchine. |
CN115387906B (zh) * | 2022-05-12 | 2024-04-16 | 中国航发四川燃气涡轮研究院 | 低进口轮毂比发动机的进气承力框架连接结构及装配方法 |
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-
1998
- 1998-02-20 DE DE19807247A patent/DE19807247C2/de not_active Expired - Fee Related
-
1999
- 1999-02-18 EP EP99103156A patent/EP0937864B1/de not_active Expired - Lifetime
- 1999-02-18 DE DE59906550T patent/DE59906550D1/de not_active Expired - Lifetime
- 1999-02-19 US US09/252,752 patent/US6139263A/en not_active Expired - Lifetime
- 1999-02-19 JP JP04200599A patent/JP4230040B2/ja not_active Expired - Fee Related
Patent Citations (4)
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US3588267A (en) | 1968-06-27 | 1971-06-28 | Rolls Royce | Blade assembly for a fluid flow machine |
DE2745130C2 (de) | 1977-10-07 | 1980-01-03 | Mtu Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen | Dichtungseinrichtung für die freien Schaufelenden von Axialturbinen |
DE3336420A1 (de) | 1982-10-06 | 1984-04-12 | Rolls-Royce Ltd., London | Mechanismus zur verhinderung eines ueberdrehens des turbinenrotors eines gasturbinentriebwerks im falle eines wellenbruches |
DE3540943C2 (de) | 1985-11-19 | 1992-01-23 | Mtu Muenchen Gmbh |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011018072A3 (de) * | 2009-08-14 | 2011-09-15 | Mtu Aero Engines Gmbh | Befestigungselemente für einen leitschaufelkranz einer strömungsmaschine |
EP2719869A1 (de) * | 2012-10-12 | 2014-04-16 | MTU Aero Engines GmbH | Axiale Abdichtung in einer Gehäusestruktur für eine Strömungsmaschine |
US9605551B2 (en) | 2012-10-12 | 2017-03-28 | MTU Aero Engines AG | Axial seal in a casing structure for a fluid flow machine |
EP2796667A1 (de) * | 2013-04-24 | 2014-10-29 | MTU Aero Engines GmbH | Gleitringdichtung |
US9835039B2 (en) | 2013-04-24 | 2017-12-05 | MTU Aero Engines AG | Slide ring seal |
CN103482219A (zh) * | 2013-09-16 | 2014-01-01 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种燃气轮机运输过程中对转子进行轴、径向定位方法 |
CN103482219B (zh) * | 2013-09-16 | 2016-06-01 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种燃气轮机运输过程中对转子进行轴、径向定位方法 |
EP2947281A1 (de) * | 2014-05-14 | 2015-11-25 | MTU Aero Engines GmbH | Gasturbinengehäuseanordnung |
US9816386B2 (en) | 2014-05-14 | 2017-11-14 | MTU Aero Engines AG | Casing arrangement for a gas turbine |
Also Published As
Publication number | Publication date |
---|---|
EP0937864B1 (de) | 2003-08-13 |
JPH11294103A (ja) | 1999-10-26 |
US6139263A (en) | 2000-10-31 |
DE19807247C2 (de) | 2000-04-20 |
JP4230040B2 (ja) | 2009-02-25 |
DE59906550D1 (de) | 2003-09-18 |
EP0937864A3 (de) | 2000-10-25 |
DE19807247A1 (de) | 1999-09-09 |
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