EP1092081B1 - Rotor für eine turbomaschine - Google Patents
Rotor für eine turbomaschine Download PDFInfo
- Publication number
- EP1092081B1 EP1092081B1 EP99939943A EP99939943A EP1092081B1 EP 1092081 B1 EP1092081 B1 EP 1092081B1 EP 99939943 A EP99939943 A EP 99939943A EP 99939943 A EP99939943 A EP 99939943A EP 1092081 B1 EP1092081 B1 EP 1092081B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- rotor
- accordance
- several
- recesses
- 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.)
- Expired - Lifetime
Links
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
- F01D5/06—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
Definitions
- the invention relates to a rotor for a turbomachine, with at least two bladed Steps whose discs are detachably connected to each other.
- Turbomachinery rotors generally have a plurality of vaned blades Stages whose discs in different ways, e.g. by welding or releasably connected by screwing, with each other. Present will be considered only releasably interconnected stages.
- the discs are substantially in the axial direction extending, cylindrical or conical shells on, at the end portions thereof each disc-annular flanges are provided, to which adjacent Slices with screws, stud bolts od. Like. Are connected. If one Interstage seal is not integrated in the shells, it is between each sandwiched the flanges. Such a connection can only be at Relatively low peripheral speed components, e.g. slowly running low-pressure turbines, use as the centrifugal forces at for high peripheral speeds designed discs too high hoop stresses in the flange connection. The holes in the flanges make local Voltage increments causing notching and restrict the cyclic Durable life of the component.
- DE-OS 2 104 172 discloses a turbine rotor and a method for its production, at the adjacent discs with inwardly directed flanges with aligned bolt holes through which a bolt is passed, clamped together are.
- the problem is that the bolt holes in the Flange represent local stress risers causing notching and the limit cyclic life of the rotor.
- a disc In a further known rotor, a disc has bores through which with adjacent discs, with cylindrical or conical shells with Have flanges, is connected by screwing.
- the disk body limited the radial expansion of the joint due to centrifugal force.
- the problem is that the holes in the highly loaded disk body represent life-limiting notch sites.
- the invention has for its object to provide a rotor for a turbomachine to create the genus described above, in which the discs detachable with each other be connected without extreme voltage increases by notching occur in the disc.
- the first flange extends axially spaced from the side surface of first disc to form a gap radially inward.
- the first flange is designed as a disc ring, which has recesses along its inner end or peripheral edge.
- the recesses are opened inwards, so that through the bolts generated centrifugal force can be absorbed by the edge surface of the recesses can.
- the recesses are equidistant along the peripheral edge are arranged.
- a slot or another recess can be provided.
- a flange portion of an intermediate stage seal is between each the first and second flange clamped, wherein the flange portion of the Interstage seal preferred to the recesses of the first flange has aligned bores, which the bolts in the radial direction during assembly fix.
- the bolts facing at their the first disc Ends a transverse section extending at right angles to its longitudinal axis have, with which they are supported on an inner side surface of the first flange.
- the bolts are preferably T-head bolts.
- the distance of the first flange to the side surface of the first disc as small as possible, but larger than the thickness of the transverse section of the bolt to to avoid a pressure point on the highly loaded, first disc.
- the flange of an adjacent disc has at its radially inner end a substantially axially extending support portion on, on which the cross section of the bolt is supported, so as to prevent rotation to create a bolt.
- the first disc on both side surfaces a first flange, so that in this way, the discs of rotors detachably connect with more than two levels.
- Fig. 1 shows a longitudinal section of an embodiment of the invention Rotor for a turbomachine, which has three stages.
- the steps are each with a blade 1, 2 and 3 and a first disc 4 and two adjacent Slices 5,6 provided.
- the first disc 4 has at its two side surfaces 7,8 each have a flange 9 and 10, respectively.
- the flanges 9,10 extend with a axial distance A from their inner side surfaces 11,12 to the side surfaces 7,8 the first disc 4. In this way, between the first disc 4 and the Flanges 9,10 a gap Z, which is open in the radial direction inwards.
- the distance A is to be kept as small as possible, around the radial expansion of the flanges 9,10 and the flange to be limited by the body of the disc 4.
- a transverse section 13 engages (Screw) bolt 14 in the space Z and rests on the Tensioning / bolting respectively to the inner side surface such as e.g. 12, the Flange 10 from.
- the disks 5, 6 adjacent to the middle, first disk 4 each face each other extending substantially in the axial direction, cylindrical shells 16, which also may be formed cone-shaped.
- the bowls 16 have on their to the Slices 5.6 distal ends each have a second flange 17, each with the Flanges 9,10 of the first disc 4 by (screw) bolt 14 or the like. tightly clamped becomes.
- the second flanges 17 of the disks 5, 6 are each closed substantially in the axial direction extending support portion 18 at which the Transverse portions 13 of the bolts 14 can be supported, whereby a rotation of the bolt 14 is prevented. This ensures that when mounting or tightening the (screw) bolt 14 no pressure points on the highly loaded, first discs 4 occur.
- each intermediate stage seal 19 with her Flange portion 20 clamped and releasably secured.
- the intermediate stage seals Alternatively, 19 may also be integral with the discs 5, 6 or their shells 16 may be arranged.
- Fig. 2 shows a cut and broken cross-sectional view along the line II-II of Fig. 1, in the upper partial section of the flange 9 shown in a plan view is.
- the flange 9 is formed as a disc ring, on the inner Stir n-area or peripheral edge 21 in the radial direction inwardly open, slot-like Recesses 15 are provided.
- a recess 15 is a (screw) bolt 14 used, the transverse section 13 is shown in dashed lines. After mo n-ting this is supported on the inner side surface 11 of the flange 9.
- a bore 22 provided for relief, which the notch factor due to the recess 15th decreases.
- the holes 22 as slots, more Au savings savings or the like. be educated.
- Fig. 2 In the lower part of Fig. 2 is the disc-ring-shaped Flange portion 20 of the intermediate stage seal 19 shown, the holes 23rd having.
- the holes 23 are aligned with the recesses 15 in the flanges 9,10 of the first disc 4 as well as corresponding holes 24 in the second Flanges 17 from the adjacent to the first disc 4 discs 5.6.
- the holes 23 in the flange portion 20 of the interstage seal 19 radially inwardly open, with their opening size smaller than her Diameter is so as to a radial fixation of the (screw) bolt 14 in the To assure assembly.
- the holes 23 as closed Be formed holes.
- every second stage will have one less a flange 9 and 10 having the first disc 4 provided.
- Fig. 3 shows a further embodiment of the rotor according to the invention, in the radius R at the transition between the inner side surface 8 of the first Slice 4 and the flange 10 and its inner side surface 12 of strength s-found is enlarged.
- the distance A between the side surface 8 of the first disc 4 and the inner side surface 12 of the flange 10 is larger, has the (screw) bolt 14 a shear ring or collar 25, which on an outer Side surface 26 of the flange 10 rests and an axial displacement of the (Screw) bolt 14 prevents so that the transverse sections 13 during assembly not be pressed against the first disc 4 and e-hen their protection against Verdr to lose.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims (13)
- Rotor für eine Turbomaschine, mit wenigstens zwei beschaufeiten Stufen, deren Scheiben (4, 5, 6) lösbar miteinander verbunden sind, wobei eine erste Scheibe (4) wenigstens an einer Seitenfläche (7, 8) einen mit seiner inneren Seitenfläche (11,12) möglichst gering dazu beabstandeten, ersten Flansch (9, 10) aufweist, der mit einem zweiten Flansch (17) einer benachbarten Scheibe (5, 6) durch jeweils einen Querabschnitt (13) aufweisende Bolzen (14) verbunden ist, wobei sich die Querabschnitte (13) nach dem Montieren an der inneren Seitenfläche (11,12) des ersten Flansches (9,10) abstützen, und wobei der erste Flansch (9,10) der ersten Scheibe (4) als Scheibenring ausgebildet ist, der entlang seiner inneren Umfangskante (21) radial nach innen geöffnete Aussparungen (15) aufweist, dadurch gekennzeichnet, dass der zweite Flansch (17) an der benachbarten Scheibe (5,6) einen sich im wesentlichen in Axialrichtung erstreckenden Stützabschnitt (18) aufweist, an dem sich die Querabschnitte (13) der Bolzen (14) abstützen.
- Rotor nach Anspruch 1, dadurch gekennzeichnet, dass sich der erste Flansch (9,10) mit axialem Abstand (A) zur Seitenfläche (7,8) der ersten Scheibe (4) radial nach innen erstreckt.
- Rotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Aussparungen (15) äquidistant angeordnet sind.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Scheibenring (9,10) zwischen den Aussparungen (15) jeweils eine Bohrung oder Aussparung (22) aufweist.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite Flansch (17) einer benachbarten Scheibe (5,6) zu den Aussparungen (15) des ersten Flansches (9,10) fluchtende Bohrungen (24) aufweist.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Flanschabschnitt (20) einer Zwischenstufendichtung (19) jeweils zwischen dem ersten und zweiten Flansch (9,10 bzw. 17) eingeklemmt ist.
- Rotor nach Anspruch 6, dadurch gekennzeichnet, dass der Flanschabschnitt (20) der Zwischenstufendichtung (19) zu den Aussparungen (15) des ersten Flansches (9,10) fluchtende Bohrungen (23) aufweist.
- Rotor nach Anspruch 7, dadurch gekennzeichnet, dass die Bohrungen (23) die Bolzen (14) in Radialrichtung fixieren.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bolzen (14) an ihren der ersten Scheibe (4) zugewandten Enden einen sich rechtwinklig zu ihrer Längsachse erstreckenden Querabschnitt (13) aufweisen.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bolzen (14) T-Kopfbolzen sind.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand (A) des ersten Flansches (9,10) zur Seitenfläche (7,8) der ersten Scheibe (4) größer als die Stärke des Querabschnitts (13) ist.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Bolzen (14) einen Bund (25) aufweist, der sich an eine äußere Seitenfläche (26) des ersten Flansches (9,10) abstützt.
- Rotor nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Scheibe (4) an beiden Seitenflächen (7,8) einen ersten Flansch (9,10) aufweist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19828817 | 1998-06-27 | ||
| DE19828817A DE19828817C2 (de) | 1998-06-27 | 1998-06-27 | Rotor für eine Turbomaschine |
| PCT/DE1999/001840 WO2000000719A1 (de) | 1998-06-27 | 1999-06-24 | Rotor für eine turbomaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1092081A1 EP1092081A1 (de) | 2001-04-18 |
| EP1092081B1 true EP1092081B1 (de) | 2003-07-30 |
Family
ID=7872288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99939943A Expired - Lifetime EP1092081B1 (de) | 1998-06-27 | 1999-06-24 | Rotor für eine turbomaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6499957B1 (de) |
| EP (1) | EP1092081B1 (de) |
| JP (1) | JP2002519564A (de) |
| CA (1) | CA2335964A1 (de) |
| DE (2) | DE19828817C2 (de) |
| WO (1) | WO2000000719A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10837284B2 (en) | 2017-08-11 | 2020-11-17 | MTU Aero Engines AG | Rotor for a turbomachine |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20011961A1 (it) * | 2001-09-20 | 2003-03-20 | Nuovo Pignone Spa | Flangia migliorata di accoppiamento tra compressore assiale e gruppo di dischi rotorici di alta pressione in una turbina a gas |
| RU2224892C2 (ru) * | 2002-05-06 | 2004-02-27 | Открытое акционерное общество "Авиадвигатель" | Газотурбинный двигатель с двухступенчатой газовой турбиной |
| FR2857419B1 (fr) * | 2003-07-11 | 2005-09-23 | Snecma Moteurs | Liaison amelioree entre disques aubages sur la ligne rotor d'un compresseur |
| DE102004016244B4 (de) | 2004-04-02 | 2007-08-23 | Mtu Aero Engines Gmbh | Rotor für eine Turbomaschine |
| FR2868814B1 (fr) * | 2004-04-09 | 2009-12-18 | Snecma Moteurs | Dispositif d'assemblage de brides annulaires, en particulier dans une turbomachine |
| FR2931873B1 (fr) * | 2008-05-29 | 2010-08-20 | Snecma | Ensemble d'un disque de turbine d'un moteur a turbine a gaz et d'un tourillon support de palier,circuit de refroidissement d'un disque de turbine d'un tel ensemble. |
| US8043062B2 (en) * | 2008-09-04 | 2011-10-25 | Mitsubishi Heavy Industries, Ltd. | Turbine rotor and turbine having the same |
| DE102008048006B4 (de) | 2008-09-19 | 2019-02-21 | MTU Aero Engines AG | Wellenleistungstriebwerk, insbesondere für ein Luftfahrzeug, mit einem Kühlgasführungssystem im Bereich der Befestigungsflansche der Rotorscheiben |
| FR2961249B1 (fr) * | 2010-06-10 | 2014-05-02 | Snecma | Dispositif de refroidissement des alveoles d'un disque de rotor de turbomachine |
| US9004871B2 (en) * | 2012-08-17 | 2015-04-14 | General Electric Company | Stacked wheel assembly for a turbine system and method of assembling |
| US9279325B2 (en) * | 2012-11-08 | 2016-03-08 | General Electric Company | Turbomachine wheel assembly having slotted flanges |
| US11073044B2 (en) * | 2013-01-21 | 2021-07-27 | Raytheon Technologies Corporation | Adjustable floating oil channel for gas turbine engine gear drive |
| US10465519B2 (en) * | 2013-10-17 | 2019-11-05 | Pratt & Whitney Canada Corp. | Fastening system for rotor hubs |
| US10502059B2 (en) * | 2015-02-02 | 2019-12-10 | United Technologies Corporation | Alignment tie rod device and method of utilization |
| US10316681B2 (en) * | 2016-05-31 | 2019-06-11 | General Electric Company | System and method for domestic bleed circuit seals within a turbine |
| FR3062415B1 (fr) * | 2017-02-02 | 2019-06-07 | Safran Aircraft Engines | Rotor de turbine de turbomachine a ventilation par lamage |
| US11428124B2 (en) | 2018-11-21 | 2022-08-30 | Raytheon Technologies Corporation | Flange stress-reduction features |
| CN112360886B (zh) * | 2020-10-28 | 2022-03-25 | 中国航发湖南动力机械研究所 | 盘轴连接结构 |
| CN115614324B (zh) * | 2022-11-22 | 2023-05-05 | 中国航发四川燃气涡轮研究院 | 基于变截面螺栓连接的压气机转子多级轮盘连接结构 |
| EP4575190A3 (de) * | 2023-12-22 | 2025-10-29 | Rohr, Inc. | Befestigungsanordnung für einen gasturbinenmotormittelkörper und verfahren zur befestigung eines mittelkörpers |
| CN119084084B (zh) * | 2024-09-09 | 2025-11-21 | 中国航发沈阳发动机研究所 | 一种航空发动机高压涡轮盘与轴连接结构 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2614796A (en) * | 1950-03-30 | 1952-10-21 | Westinghouse Electric Corp | Rotor construction |
| US3688371A (en) * | 1970-04-30 | 1972-09-05 | Gen Electric | The method of manufacturing compositely formed rotors |
| FR2552159B1 (fr) * | 1983-09-21 | 1987-07-10 | Snecma | Dispositif de liaison et d'etancheite de secteurs d'aubes de stator de turbine |
| CA1209482A (en) * | 1983-12-22 | 1986-08-12 | Douglas L. Kisling | Two stage rotor assembly with improved coolant flow |
| FR2607866B1 (fr) * | 1986-12-03 | 1991-04-12 | Snecma | Axes de fixation de rotors de turbomachine, procede de montage et rotors ainsi montes |
| US5052891A (en) * | 1990-03-12 | 1991-10-01 | General Motors Corporation | Connection for gas turbine engine rotor elements |
| US5350278A (en) * | 1993-06-28 | 1994-09-27 | The United States Of America As Represented By The Secretary Of The Air Force | Joining means for rotor discs |
| US5388963A (en) * | 1993-07-02 | 1995-02-14 | United Technologies Corporation | Flange for high speed rotors |
| GB2303188B (en) * | 1995-07-13 | 1999-04-28 | Bmw Rolls Royce Gmbh | An assembly of two turbine rotor discs |
-
1998
- 1998-06-27 DE DE19828817A patent/DE19828817C2/de not_active Expired - Lifetime
-
1999
- 1999-06-24 JP JP2000557062A patent/JP2002519564A/ja active Pending
- 1999-06-24 CA CA002335964A patent/CA2335964A1/en not_active Abandoned
- 1999-06-24 DE DE59906444T patent/DE59906444D1/de not_active Expired - Lifetime
- 1999-06-24 WO PCT/DE1999/001840 patent/WO2000000719A1/de not_active Ceased
- 1999-06-24 EP EP99939943A patent/EP1092081B1/de not_active Expired - Lifetime
- 1999-06-24 US US09/720,504 patent/US6499957B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10837284B2 (en) | 2017-08-11 | 2020-11-17 | MTU Aero Engines AG | Rotor for a turbomachine |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2335964A1 (en) | 2000-01-06 |
| DE59906444D1 (de) | 2003-09-04 |
| WO2000000719A1 (de) | 2000-01-06 |
| JP2002519564A (ja) | 2002-07-02 |
| DE19828817A1 (de) | 1999-12-30 |
| US6499957B1 (en) | 2002-12-31 |
| EP1092081A1 (de) | 2001-04-18 |
| DE19828817C2 (de) | 2000-07-13 |
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