EP0893576A2 - Verbindung von rotierenden Bauteilen - Google Patents
Verbindung von rotierenden Bauteilen 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
Solche Verbindungen finden sich beispielsweise beim Zusammenfügen von Rotorscheiben von thermisch hochbelasteten Gasturbinen.
Weitere Merkmale und Vorteile ergeben sich aus den Unteransprüchen.
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.
- 1
- rotierendes Bauteil, Rotorscheibe
- 2
- rotierendes Bauteil, Rotorscheibe
- 3
- Zentriersitz
- 4
- positiver Zentrierversatz
- 5
- negativer Zentrierversatz
- 6
- Hohlraum von 1
- 7
- Einlagering
- 8
- zylindrische Kontaktfläche
- 9
- doppelkonische Kontaktfläche
- 10
- Freistich
- 11
- Bund auf 7
- 12
- Spalt
Claims (9)
- Kraft- und formschlüssige Verbindung von rotierenden Bauteilen (1, 2) , welche im Bereich der Verbindung während der Rotation unterschiedliches Dehnungsverhalten aufweisen, wobei der Formschluss über einen gestuften Zentriersitz (3) erfolgt und der Kraftschluss zwischen den beiden Bauteilen mittels axial vorgespannter Elemente erfolgt, und wobei zumindest eines der Bauteile einen Hohlraum (6) im Innern aufweist,
dadurch gekennzeichnet, dass im Hohlraum (6) ein Einlagering (7) angeordnet ist, welcher während des Betriebes eine radiale Kaft auf den Zentriersitz (3) ausübt. - Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass der Einlagering (7) nur mit einem Teil seiner axialen Erstreckung an dem mit ihm zusammenwirkenden Bauteil (1)anliegt.
- Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass der Einlagering (7) vorgespannt ist.
- Verbindung nach Anspruch 3, dadurch gekennzeichnet, dass der Einbau des Einlageringes (7) in den Hohlraum (6) durch thermisches Schrumpfen erfolgt.
- Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass der Zentrierversatz (4, 5) des Zentriersitzes (3) zumindest annähernd zylindrisch oder leicht konisch ausgebildet ist.
- Verbindung nach Anspruch 5, dadurch gekennzeichnet, dass der Zentriersitz (3) sowohl vor als auch hinter der Kontaktfläche (8) mit konkaven Freistichen (10) versehen ist, deren der Kontaktfläche zugewandte Ausrundungen innerhalb der Kontaktfläche enden.
- Verbindung nach Anspruch 5, dadurch gekennzeichnet, dass das Bauteil (2) mit dem negativen Zentrierversatz (5) und der Einlagering (7) aus einem Werkstoff bestehen, welcher einen höheren Ausdehnungskoeffizienten aufweist als der Werkstoff des Bauteiles (1) mit dem positiven Zentrierversatz (4), in dessen Hohlraum (6) der Einlagering (7) untergebracht ist.
- Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass der Zentriersitz (3) eine doppelkonische Kontaktfläche (9) aufweist, und dass das Bauteil (2) mit dem positiven Zentrierversatz (4) und der Einlagering (3) aus einem Werkstoff bestehen, welcher einen höheren Ausdehnungskoeffizienten aufweist als der Werkstoff des Bauteiles (1) mit dem negativen Zentrierversatz (5), in dessen Hohlraum (6) der Einlagering (7) untergebracht ist.
- Verwendung der kraft- und formschlüssigen Verbindung nach einem der Ansprüche 1 bis 10 zum Zusammenfügen von Rotorscheiben von Turbomaschinen, insbesondere von thermisch hochbelasteten Gasturbinen, wobei einzelne, konzentrisch aneinanderangeordnete Rotorscheiben im Rotorinneren durch einen oder mehrere Bolzen miteinander verschraubt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19728345 | 1997-07-03 | ||
DE19728345A DE19728345A1 (de) | 1997-07-03 | 1997-07-03 | Kraft- und formschlüssige Verbindung von rotierenden Bauteilen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0893576A2 true EP0893576A2 (de) | 1999-01-27 |
EP0893576A3 EP0893576A3 (de) | 1999-12-08 |
EP0893576B1 EP0893576B1 (de) | 2003-12-03 |
Family
ID=7834469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810441A Expired - Lifetime EP0893576B1 (de) | 1997-07-03 | 1998-05-14 | Verbindung von rotierenden Bauteilen |
Country Status (4)
Country | Link |
---|---|
US (2) | US6126357A (de) |
EP (1) | EP0893576B1 (de) |
JP (1) | JPH1172002A (de) |
DE (2) | DE19728345A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19728345A1 (de) * | 1997-07-03 | 1999-01-07 | Asea Brown Boveri | Kraft- und formschlüssige Verbindung von rotierenden Bauteilen |
DE10134611A1 (de) * | 2000-12-16 | 2002-06-27 | Alstom Switzerland Ltd | Fixiervorrichtung für eine Beschaufelung einer Strömungsmaschine |
GB0116479D0 (en) * | 2001-07-06 | 2001-08-29 | Rolls Royce Plc | Coupling arrangement |
DE10319629A1 (de) * | 2003-05-02 | 2004-11-18 | Zf Friedrichshafen Ag | Welle-Nabe-Verbindung |
FR2867223B1 (fr) * | 2004-03-03 | 2006-07-28 | Snecma Moteurs | Turbomachine comme par exemple un turboreacteur pour avion |
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 |
US20170226861A1 (en) * | 2014-10-15 | 2017-08-10 | Safran Aircraft Engines | Rotary assembly for a turbine engine comprising a self-supported rotor collar |
US10443604B2 (en) | 2014-10-31 | 2019-10-15 | Trane International Inc. | Systems and methods to clamp 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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (de) * | 1979-10-25 | 1981-05-06 | ELIN-UNION Aktiengesellschaft für elektrische Industrie | Rotor für eine thermische Turbomaschine |
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 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3088758A (en) * | 1958-02-12 | 1963-05-07 | Atomic Energy Authority Uk | Thermocompensating joint |
CH590414A5 (de) * | 1975-07-04 | 1977-08-15 | Bbc Brown Boveri & Cie | |
DE2851507C2 (de) * | 1978-11-29 | 1982-05-19 | Aktiengesellschaft Kühnle, Kopp & Kausch, 6710 Frankenthal | Isolations-Federkörper und dessen Verwendung |
DE3625996A1 (de) * | 1986-07-31 | 1988-02-04 | Kuehnle Kopp Kausch Ag | Laufzeug fuer einen abgasturbolader |
US4859143A (en) * | 1987-07-08 | 1989-08-22 | United Technologies Corporation | Stiffening ring for a stator assembly of an axial flow rotary machine |
KR0154105B1 (ko) * | 1989-10-30 | 1998-11-16 | 제랄드 피. 루니 | 보어리스 허브 컴프레스 휠을 가진 터보차저 컴프레서 휠 조립체 |
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 (de) * | 1991-12-16 | 1993-06-17 | Stroemungsmaschinen Gmbh | Gasturbine mit einem radialverdichter aus aluminium |
DE19540745A1 (de) * | 1995-11-02 | 1997-05-07 | Asea Brown Boveri | Verdichterrad-Wellenverbindung |
DE19728085A1 (de) * | 1997-07-02 | 1999-01-07 | Asea Brown Boveri | Fügeverbindung zwischen zwei Fügepartnern sowie deren Verwendung |
DE19728345A1 (de) * | 1997-07-03 | 1999-01-07 | Asea Brown Boveri | Kraft- und formschlüssige Verbindung von rotierenden Bauteilen |
-
1997
- 1997-07-03 DE DE19728345A patent/DE19728345A1/de not_active Withdrawn
-
1998
- 1998-05-14 EP EP98810441A patent/EP0893576B1/de not_active Expired - Lifetime
- 1998-05-14 DE DE59810313T patent/DE59810313D1/de 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/ja 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 |
---|---|---|---|---|
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 (de) * | 1979-10-25 | 1981-05-06 | ELIN-UNION Aktiengesellschaft für elektrische Industrie | Rotor für eine thermische Turbomaschine |
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 |
---|---|
DE59810313D1 (de) | 2004-01-15 |
JPH1172002A (ja) | 1999-03-16 |
DE19728345A1 (de) | 1999-01-07 |
EP0893576A3 (de) | 1999-12-08 |
US6126357A (en) | 2000-10-03 |
EP0893576B1 (de) | 2003-12-03 |
US6276863B1 (en) | 2001-08-21 |
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