EP0893576A2 - Connection of rotating elements - Google Patents
Connection of rotating elements Download PDFInfo
- Publication number
- EP0893576A2 EP0893576A2 EP98810441A EP98810441A EP0893576A2 EP 0893576 A2 EP0893576 A2 EP 0893576A2 EP 98810441 A EP98810441 A EP 98810441A EP 98810441 A EP98810441 A EP 98810441A EP 0893576 A2 EP0893576 A2 EP 0893576A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- centering
- positive
- insert ring
- connection according
- connection
- 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
- 238000009434 installation Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 9
- 239000011796 hollow space material Substances 0.000 abstract 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/025—Fixing blade carrying members on shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/026—Shaft to shaft connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
-
- 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
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/21—Utilizing thermal characteristic, e.g., expansion or contraction, etc.
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/21—Utilizing thermal characteristic, e.g., expansion or contraction, etc.
- Y10T403/217—Members having different coefficients of expansion
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/48—Shrunk fit
Definitions
- the invention relates to a force-locking connection of rotating components according to the preamble of claim 1.
- Such connections are found, for example, when assembling rotor disks of thermally highly loaded gas turbines.
- the rotor of a turbomachine generally consists of several rotor disks, which are lined up axially and aligned concentrically. These rotor disks are clamped together by one or more tie rods and thus form a compact unit.
- the rotors have a very high axial rigidity and centering Exhibit [concentricity], i.e. that in the different operating states no unstable conditions, vibrations or eccentric running through Changes in the center of gravity can result. This despite the inevitable different coefficients of thermal expansion of the applied different materials. About such displacements of the rotor parts against each other Hirth serrations can be avoided on the end faces of the rotor disks be arranged.
- Other measures, such as short cones etc. could in practice offset rotor parts against each other and thus non-circular running, which can lead to the destruction of the rotor and stator prevent.
- the invention tries to avoid these disadvantages. It is her job based on a non-positive and positive connection of rotating components create which is designed or can be retrofitted so that a operational misalignment [rotation or displacement] of components to each other is avoided.
- the rotating components 1 and 2 as rotor disks 1 and 2nd designated.
- the individual rotor disks are 1, 2 axially strung together and by at least one (not in the figures illustrated) tie rods clamped together concentrically.
- the through the Tension forces caused by tie rods result in a non-positive connection of the Rotor disks.
- these of the frictional forces resulting from the clamping forces are not sufficient to cause a misalignment to prevent the rotor disks against each other.
- this can be the case when the rotor disks are different during rotation Have stretching behavior, partly because they are made of different materials consist.
- This positive and non-positive connection is formed as a centering seat 3, which lies between two adjacent to each other Rotor disks are provided and biased by an insert ring 7.
- the centering seat has the shape of a on the two adjacent rotor disks orbiting, concentric level with a positive, protruding Centering offset 4 on the rotor part 1 and a negative, drawn centering offset 5 on the rotor part 2.
- the insert ring 7 is on the inner rotor disk relative to the centering seat 1 arranged, namely in a cavity 6. It is biased, which is the occasion assembly by thermal shrinking. On the occasion of the rotation Due to the centrifugal force due to mass, he presses the relative to the centering seat 3 internal rotor disc 1 against the external rotor disc 2 and creates a positive and non-positive connection.
- the positive and negative Centering offsets 4, 5 of this centering seat have essentially one cylindrical contact surface 8, which is concentric with the rotor axis. Of course, there is also a slightly conical alignment of the contact surface 8 possible.
- the centering seat prevents radial displacement and through that The contact pressure also increases the resistance to axial displacement of the rotor disks against each other. Such shifts can be caused by the thermal expansions and thermal stresses at the high operating temperatures of the gas turbines are caused.
- the centering seat 3 is both in front of and behind the contact surface 8 provided with concave undercuts 10. Their facing the contact surface Fillets end within the contact area.
- the internal mechanical stress curve can be changed so that the Zones of greatest mechanical stress, i.e. of the greatest voltage gradient be moved from the area of the contact surface 8.
- both rotor parts achieved that among those mentioned certain Operating conditions in the contact area only crack-closing and thus Crack growth-preventing surface-parallel compressive stresses arise.
- the mutual centering of the rotor disks via two conical seats via two conical seats.
- a double conical is then useful Training of the centering seat 3 with a corresponding double conical extending contact surface 9.
- the rotor part 2 which the has positive centering offset 4, while the rotor part 1 with the negative Centering offset 5 is provided.
- the tolerances are chosen so that one of these conical surfaces is fully loaded during operation, while the offsets of the other conical surface are only partially in contact.
- the insert ring 7 not all over, but only with part of its outer surface on the Rotor disc 1 is present. This can be achieved by using the ring a collar 11 is provided.
- the federal government is in its diameter and its axial extent so that it is a small on both sides of the collar Gap 12 generated between ring 7 and rotor disk 1. The smaller one now The contact surface causes a favorable, reduced heat transfer from the rotor disc on the insert ring.
- the rotor disk 1 - in the cavity 6 of the Insert ring 7 is housed - made of a ferritic steel with lower Expansion coefficient and the rotor disk 2 consists of an austenitic Steel with higher expansion coefficients is used as a material for the Insert ring 7 preferably also a material with higher coefficients of expansion chosen. In the case of gas turbines with high thermal loads are these material combinations for rotor disks 1 and 2 common.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
Die Erfindung betrifft eine kraft- urrd formschlüssige Verbindung von rotierenden
Bauteilen gemäss Oberbegriff des Patentanspruchs 1.
Solche Verbindungen finden sich beispielsweise beim Zusammenfügen von
Rotorscheiben von thermisch hochbelasteten Gasturbinen.The invention relates to a force-locking connection of rotating components according to the preamble of claim 1.
Such connections are found, for example, when assembling rotor disks of thermally highly loaded gas turbines.
Der Rotor einer Turbomaschine besteht im allgemeinen aus mehreren Rotorscheiben, welche axial aneinandergereiht und konzentrisch ausgerichtet sind. Diese Rotorscheiben sind durch einen oder mehrere, Zuganker miteinander verspannt und bilden so eine kompakte Einheit. Für den Betrieb einer Turbomaschine ist erforderlich, dass die Rotoren eine sehr hohe axiale Steifheit und Zentrierung [Rundlauf] aufweisen, d.h., dass sich in den verschiedenen Betriebszuständen keine instabilen Zustände, Vibrationen oder azentrischer Lauf durch Schwerpunktsverlagerungen ergeben können. Dies trotz der unvermeidlichen unterschiedlichen Temperaturausdehnungskoeffizienten der angewandten unterschiedlichen Materialien. Um solche Versetzungen der Rotorteile gegeneinander zu vermeiden kann an den Stirnflächen der Rotorscheiben eine Hirth-Verzahnung angeordnet sein. Die Herstellung derselben ist jedoch sehr teuer und erfordert hochgenaue Maschinen. Andere Massnahmen, wie kurze Zapfen etc. konnten in der Praxis eine Versetzung von Rotorteilen gegeneinander und somit unrunden Lauf, welcher zur Zerstörung von Rotor und Stator führen kann, nicht verhindern. The rotor of a turbomachine generally consists of several rotor disks, which are lined up axially and aligned concentrically. These rotor disks are clamped together by one or more tie rods and thus form a compact unit. For the operation of a turbo machine it is necessary that the rotors have a very high axial rigidity and centering Exhibit [concentricity], i.e. that in the different operating states no unstable conditions, vibrations or eccentric running through Changes in the center of gravity can result. This despite the inevitable different coefficients of thermal expansion of the applied different materials. About such displacements of the rotor parts against each other Hirth serrations can be avoided on the end faces of the rotor disks be arranged. However, the production of the same is very expensive and requires highly precise machines. Other measures, such as short cones etc. could in practice offset rotor parts against each other and thus non-circular running, which can lead to the destruction of the rotor and stator prevent.
Die Erfindung versucht, diese Nachteile zu vermeiden. Es liegt ihr die Aufgabe zugrunde, eine kraft- und formschlüssige Verbindung von rotierenden Bauteilen zu schaffen, welche so ausgebildet ist oder so nachgerüstet werden kann, dass eine betriebsbedingte Dejustierung [Verdrehung oder Verschiebung] von Bauteilen zueinander vermieden wird.The invention tries to avoid these disadvantages. It is her job based on a non-positive and positive connection of rotating components create which is designed or can be retrofitted so that a operational misalignment [rotation or displacement] of components to each other is avoided.
Bei einer Verbindung der eingangs genannten Art wird dies mit den kennzeichnenden
Merkmalen des Patentanspruchs erreicht.
Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen.In the case of a connection of the type mentioned at the outset, this is achieved with the characterizing features of the patent claim.
Further features and advantages result from the subclaims.
In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung anhand einer
Anwendung bei Gasturbinen vereinfacht dargestellt.
Es zeigen:
- Fig. 1
- schematisch Ausschnitte von zwei benachbarten Rotorscheiben in einer ersten Ausführungsform;
- Fig. 2
- schematisch Ausschnitte von zwei benachbarten Rotorscheiben in einer zweiten Ausführungsform;
- Fig. 3
- den Zentriersitz aus Fig. 1 in vergrösserter Ansicht.
Show it:
- Fig. 1
- schematically sections of two adjacent rotor disks in a first embodiment;
- Fig. 2
- schematically sections of two adjacent rotor disks in a second embodiment;
- Fig. 3
- the centering seat of FIG. 1 in an enlarged view.
Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt; insbesondere ist nicht der an sich bekannte und unveränderte Teil des Rotors oder andere Rotoreinzelheiten etc. dargestellt. Funktionsgleiche Teile sind bei den verschiedenen Beispielen mit den gleichen Bezugszeichen bezeichnet. Only the elements essential for understanding the invention are shown; in particular is not the known and unchanged part of the rotor or other rotor details etc. shown. Functionally identical parts are in the different examples with the same reference numerals.
Nachstehend sind die rotierenden Bauteile 1 und 2 als Rotorscheiben 1 resp. 2
bezeichnet. Bei einem Rotor für Turbomaschinen sind die einzelnen Rotorscheiben
1, 2 axial aneinandergereiht und durch wenigstens einen (in den Figuren nicht
dargestellten) Zuganker konzentrisch miteinander verspannt. Die durch die
Zuganker bedingten Spannkräfte ergeben eine kraftschlüssige Verbindung der
Rotorscheiben. Es kann jedoch Betriebszustände geben, in welchen diese von
den Spannkräften herrrührenden Reibkräfte nicht ausreichen, um eine Dejustierung
der Rotorscheiben gegeneinander zu verhindern. Dies kann insbesondere
der Fall sein, wenn die Rotorscheiben während der Rotation unterschiedliches
Dehnungsverhalten aufweisen,unter anderem, weil sie aus verschiedenen Materialien
bestehen.Below are the rotating
Deshalb ist gemäss Fig. 1 bei einer ersten Ausführungsform eines Rotors
zusätzlich zur kraftschlüssigen Verbindung der benachbarten Rotorscheiben eine
radial wirksame form- und kraftschlüssige Verbindung als Sperre gegen radiale
Achsversetzungen vorgesehen. Diese form- und kraftschlüssige Verbindung ist
als Zentriersitz 3 ausgebildet, welcher zwischen je zwei aneinanderliegenden
Rotorscheiben vorgesehen und durch einen Einlagering 7 vorgespannt ist. Dabei
weist der Zentriersitz auf den beiden benachbarten Rotorscheiben die Form einer
umlaufenden, konzentrischen Stufe auf mit einem positiven, hervorstehenden
Zentrierversatz 4 am Rotorteil 1 und einem negativen, eingezogenen Zentrierversatz
5 am Rotorteil 2.1 is therefore in a first embodiment of a rotor
in addition to the non-positive connection of the adjacent rotor disks
Radially effective positive and non-positive connection as a lock against radial
Axis offsets provided. This positive and non-positive connection is
formed as a centering
Der Einlagering 7 ist an der relativ zum Zentriersitz innenliegenden Rotorscheibe
1 angeordnet, und zwar in einem Hohlraum 6. Er ist vorgespannt, was anlässlich
der Montage durch thermisches Schrumpfen erfolgen kann. Anlässlich der Rotation
presst er infolge der massenbedigten Fliehkraft die relativ zum Zentriersitz 3
innenliegende Rotorscheibe 1 gegen die aussenliegende Rotorscheibe 2 und
bewirkt damit eine form- und kraftschlüssige Verbindung. Die positiven und negativen
Zentrierversatze 4, 5 dieses Zentriersitzes weisen im wesentlichen eine
zylindrische Kontaktfläche 8 auf, welche konzentrisch zur Rotorache liegt.
Selbstverständlich ist auch eine leicht konische Ausrichtung der Kontaktfläche 8
möglich. Der Zentriersitz verhindert eine radiale Verschiebung und durch die
Anpresskraft wird zudem ein erhöhter Widerstand gegen axiale Verschiebungen
der Rotorscheiben gegeneinander,erzielt. Solche Verschiebungen können durch
die Wärmedehnungen und die Wärmespannungen bei den hohen Betriebstemperaturen
der Gasturbinen verursacht werden.The
Der Zentriersitz 3 ist gemäss Fig. 3 sowohl vor als auch hinter der Kontaktfläche 8
mit konkaven Freistichen 10 versehen. Deren der Kontaktfläche zugewandten
Ausrundungen enden innerhalb der Kontaktfläche. Mit dieser Massnahme kann
der materialinterne mechanische Spannungsverlauf so geändert werden, dass die
Zonen der grössten mechanischen Belastung, d.h. des grössten Spannungsgradienten
aus dem Bereich der Kontaktfläche 8 verlagert werden. Gleichzeitig werden
diejenigen Zonen der Rotorteile 1 oder 2, in denen unter bestimmten
Betriebsbedingungen rissöffnende und damit risswachstumsfördernde oberflächenparallele
Zugpannungen auftreten können, dem Berührungsbereich des jeweils
andern Rotorteils 1 oder 2 .entzogen, damit dort keine Fretting-Risse entstehen
können. Desweiteren wird durch die Überdeckung der Vorderkante des Freistich
es des jeweils anderen Rotorteils durch eine die zu erwartende Relativbewegungen
und Einbautoleranzen übersteigende Verlängerung der Kontaktflächen
beider Rotorteile erreicht, dass unter den erwähnten bestimmten
Betriebsbedingungen im Berührungsbereich nur noch riss-schliessende und damit
risswachstums-verhindernde oberflächenparallele Druckspannungen entstehen. According to FIG. 3, the centering
In einer weiteren Ausführungsform kann die gegenseitige Zentrierung der Rotorscheiben
über zwei konische Sitze erfolgen. Sinnvoll ist dann eine doppelkonische
Ausbildung des Zentriersitzes 3 mit einer entsprechenden doppelkonisch
verlaufenden Kontaktfläche 9. In diesem Fall ist es der Rotorteil 2, welcher den
positiven Zentrierversatz 4 aufweist, während der Rotorteil 1 mit dem negativen
Zentrierversatz 5 versehen ist. Die Toleranzen werden dabei so gewählt, dass
während des Betriebes jeweils eine dieser konischen Flächen voll belastet ist,
während die Versatze der anderen,konischen Fläche nur teilweise in Kontakt sind.In a further embodiment, the mutual centering of the rotor disks
via two conical seats. A double conical is then useful
Training of the centering
Bei einer bevorzugten Ausführungsform ist vorgesehen, dass der Einlagering 7
nicht vollflächig, sondern nur mit einem Teil seiner äusseren Oberfläche an der
Rotorscheibe 1 anliegt. Dies kann dadurch erzielt werden, indem der Ring mit
einem Bund 11 versehen wird. Der Bund ist in seinem Durchmesser und seiner
axialen Erstreckung so bemessen, dass er beidseitig vom Bund einen kleinen
Spalt 12 zwischen Ring 7 und Rotorscheibe 1 generiert. Die nunmehr kleinere
Angriffsfläche bewirkt eine günstige, reduzierte Wärmeübertragung von der Rotorscheibe
auf den Einlagering.In a preferred embodiment it is provided that the
Wird davon ausgegangen, dass die Rotorscheibe 1 - in dessen Hohlraum 6 der
Einlagering 7 untergebracht ist - aus einem ferritischem Stahl mit niedrigerem
Ausdehnungskoeffizienten besteht und die Rotorscheibe 2 aus einem austenitischen
Stahl mit höheren Ausdehnungskoeffizienten, so wird als Werkstoff für den
Einlagering 7 vorzugsweise ebenfalls ein Werkstoff mit höheren Ausdehnungskoeffizienten
gewählt. Im Falle von_thermisch hochbelasteten Gasturbinen
sind diese Materialkombinationen für die Rotorscheiben 1 und 2 durchaus
üblich. It is assumed that the rotor disk 1 - in the
- 11
- rotierendes Bauteil, Rotorscheiberotating component, rotor disc
- 22nd
- rotierendes Bauteil, Rotorscheiberotating component, rotor disc
- 33rd
- ZentriersitzCentering seat
- 44th
- positiver Zentrierversatzpositive centering offset
- 55
- negativer Zentrierversatznegative centering offset
- 66
- Hohlraum von 1Cavity of 1
- 77
- EinlageringInsert ring
- 88th
- zylindrische Kontaktflächecylindrical contact surface
- 99
- doppelkonische Kontaktflächedouble conical contact surface
- 1010th
- FreistichFreeway
- 1111
- Bund auf 7Confederation on 7th
- 1212th
- Spaltgap
Claims (9)
dadurch gekennzeichnet, dass im Hohlraum (6) ein Einlagering (7) angeordnet ist, welcher während des Betriebes eine radiale Kaft auf den Zentriersitz (3) ausübt.Non-positive and positive connection of rotating components (1, 2), which have different expansion behavior in the area of the connection during rotation, the positive connection taking place via a stepped centering seat (3) and the non-positive connection between the two components using axially preloaded elements, and wherein at least one of the components has a cavity (6) inside,
characterized in that an insert ring (7) is arranged in the cavity (6) and exerts a radial force on the centering seat (3) during operation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19728345A DE19728345A1 (en) | 1997-07-03 | 1997-07-03 | Non-positive and positive connection of rotating components |
DE19728345 | 1997-07-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0893576A2 true EP0893576A2 (en) | 1999-01-27 |
EP0893576A3 EP0893576A3 (en) | 1999-12-08 |
EP0893576B1 EP0893576B1 (en) | 2003-12-03 |
Family
ID=7834469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810441A Expired - Lifetime EP0893576B1 (en) | 1997-07-03 | 1998-05-14 | Connection of rotating elements |
Country Status (4)
Country | Link |
---|---|
US (2) | US6126357A (en) |
EP (1) | EP0893576B1 (en) |
JP (1) | JPH1172002A (en) |
DE (2) | DE19728345A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19728345A1 (en) * | 1997-07-03 | 1999-01-07 | Asea Brown Boveri | Non-positive and positive connection of rotating components |
DE10134611A1 (en) * | 2000-12-16 | 2002-06-27 | Alstom Switzerland Ltd | Fixing device for a blade mounting of a compressor or turbine stage of a gas turbine system comprises a blade having a counter-contour corresponding to a connecting element of a wedge element to produce a form-locking connection |
GB0116479D0 (en) * | 2001-07-06 | 2001-08-29 | Rolls Royce Plc | Coupling arrangement |
DE10319629A1 (en) * | 2003-05-02 | 2004-11-18 | Zf Friedrichshafen Ag | Shaft-hub-connection |
FR2867223B1 (en) * | 2004-03-03 | 2006-07-28 | Snecma Moteurs | TURBOMACHINE AS FOR EXAMPLE A TURBOJET AIRCRAFT |
US20140064976A1 (en) * | 2012-08-14 | 2014-03-06 | Kevin L. Corcoran | Rotor keyhole fillet for a gas turbine engine |
GB2512016A (en) * | 2012-09-24 | 2014-09-24 | Arterius Ltd | Methods |
RU2712560C2 (en) * | 2014-10-15 | 2020-01-29 | Сафран Серамикс | Rotary assembly for turbine engine comprising self-supporting rotor casing |
CN105570189B (en) | 2014-10-31 | 2020-08-18 | 特灵国际有限公司 | System and method for securing an impeller to a compressor shaft |
US9909595B2 (en) * | 2015-07-21 | 2018-03-06 | General Electric Company | Patch ring for a compressor |
US10125785B2 (en) | 2015-10-16 | 2018-11-13 | Pratt & Whitney | Reduced stress rotor interface |
US10190598B2 (en) * | 2016-02-18 | 2019-01-29 | Pratt & Whitney Canada Corp. | Intermittent spigot joint for gas turbine engine casing connection |
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US5056950A (en) * | 1990-08-31 | 1991-10-15 | Allied-Signal Inc | Thermally activated joint |
US5163816A (en) * | 1991-07-12 | 1992-11-17 | General Motors Corporation | Wheel lock, centering and drive means and turbocharger impeller combination |
DE4141427A1 (en) * | 1991-12-16 | 1993-06-17 | Stroemungsmaschinen Gmbh | Gas turbine with radial-flow compressor of aluminium - has support sleeve in front side hub bore between drive shaft and compressor hub. |
DE19540745A1 (en) * | 1995-11-02 | 1997-05-07 | Asea Brown Boveri | Compressor vane to shaft connection |
DE19728085A1 (en) * | 1997-07-02 | 1999-01-07 | Asea Brown Boveri | Joint connection between two joining partners and their use |
DE19728345A1 (en) * | 1997-07-03 | 1999-01-07 | Asea Brown Boveri | Non-positive and positive connection of rotating components |
-
1997
- 1997-07-03 DE DE19728345A patent/DE19728345A1/en not_active Withdrawn
-
1998
- 1998-05-14 EP EP98810441A patent/EP0893576B1/en not_active Expired - Lifetime
- 1998-05-14 DE DE59810313T patent/DE59810313D1/en not_active Expired - Lifetime
- 1998-06-29 US US09/106,096 patent/US6126357A/en not_active Expired - Fee Related
- 1998-07-02 JP JP10187326A patent/JPH1172002A/en active Pending
-
2000
- 2000-07-17 US US09/617,916 patent/US6276863B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US3713676A (en) * | 1971-05-07 | 1973-01-30 | Gen Electric | Predeformed rabbit joint |
US4247256A (en) * | 1976-09-29 | 1981-01-27 | Kraftwerk Union Aktiengesellschaft | Gas turbine disc rotor |
EP0028217A1 (en) * | 1979-10-25 | 1981-05-06 | ELIN-UNION Aktiengesellschaft für elektrische Industrie | Rotor for a thermic turbomachine |
US4836750A (en) * | 1988-06-15 | 1989-06-06 | Pratt & Whitney Canada Inc. | Rotor assembly |
US5503490A (en) * | 1994-05-13 | 1996-04-02 | United Technologies Corporation | Thermal load relief ring for engine case |
Also Published As
Publication number | Publication date |
---|---|
DE19728345A1 (en) | 1999-01-07 |
US6276863B1 (en) | 2001-08-21 |
JPH1172002A (en) | 1999-03-16 |
US6126357A (en) | 2000-10-03 |
DE59810313D1 (en) | 2004-01-15 |
EP0893576B1 (en) | 2003-12-03 |
EP0893576A3 (en) | 1999-12-08 |
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