EP1008722A1 - Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine - Google Patents
Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine Download PDFInfo
- Publication number
- EP1008722A1 EP1008722A1 EP98811218A EP98811218A EP1008722A1 EP 1008722 A1 EP1008722 A1 EP 1008722A1 EP 98811218 A EP98811218 A EP 98811218A EP 98811218 A EP98811218 A EP 98811218A EP 1008722 A1 EP1008722 A1 EP 1008722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- welded
- ring
- hollow channel
- disks
- 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
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
- F01D5/063—Welded rotors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49323—Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49325—Shaping integrally bladed rotor
Definitions
- the invention relates to a method for producing a welded Rotor of a turbomachine according to the preamble of claim 1.
- a generic welded rotor for a turbomachine, for example for a gas turbine system is in European publication EP 0 844 367 A1 described.
- the rotor has hollow channels 5, 5a, 5b etc. which circumferentially around the rotor axis between two welded together Extend rotor disks.
- European publication EP 0 844 367 A1 European publication EP 0 844 367 A1 described.
- the rotor has hollow channels 5, 5a, 5b etc. which circumferentially around the rotor axis between two welded together Extend rotor disks.
- European publication referenced to the rest of all not shown in detail Details necessary for the technical understanding of the welded
- the underlying cooling system of the rotor are necessary.
- a specially trained insert ring 20 provided that bounds each hollow channel at least partially on one side and welded to the rotor disks using appropriate welds is.
- the structural design of the cavity geometry and the shape of the insert rings is selected such that conventional welding techniques can be used to produce the weld seams. While this corresponds to the desire for the simplest possible manufacturing techniques and conditions in the production and manufacture of welded rotors, the manufacture of the insert rings specially adapted to the geometry of the hollow channels requires high precision and alignment accuracy during assembly, which in turn leads to a considerable measure of manufacturing costs accept.
- the insert rings also each have a spacer on which projects into the interior of the hollow channel and hinders the free expansion of the cooling medium within the hollow channel.
- the invention has for its object a method for producing a welded rotor of a turbomachine such that one the individual parts required for the assembly of the rotor as simple as possible and inexpensive to manufacture and secondly within the welded Rotors are conveniently available.
- the Advantages that you get with the help of electron beam welding, for example, can be fully used with the inventive method.
- the Manufacturing process should work reliably at a higher process speed, than it is the case with the previously known methods for producing generic, welded rotors, the case is.
- the inventive method for producing a welded rotor Turbomachine which by one internal rotor inlet and outlet channels Coolant is flowed through and composed of several rotor disks is that extending radially or largely radially to the rotor axis Welds are connected to each other and one around the rotor axis enclose circumferential cavity with each other, the weld seams in such a way interrupts that a weld seam facing the rotor directly to the Adjacent cavity is formed by the following process steps:
- Two immediately adjacent rotor disks are along their mutual Contact surfaces, preferably along a weld, with each other fixed, for example using conventional welding techniques. Same as the above case of a welded rotor according to the Lessons from European publication EP 0 844 367 A1 close the two neighboring ones Rotor disks in the assembled state a hollow channel, its peripheral outer side, facing away from the rotor axis, at least partially is open.
- the rotor disks are also designed such that they include a gap that faces away from the rotor, directly to the cavity connects and in the one, consisting of at least two sub-elements Ring element is introduced. Both ring parts are then electron beam welded with one another at their abutting surfaces within the gap firmly. Likewise, the side flanks of the sub-elements inserted into the gap of the ring element with the respective rotor disks by means of electron beam welding firmly welded.
- Another alternative method according to the invention for producing a Generic welded rotor of a turbomachine sees the difference no division of the ring element to the method described above before, but used for closing the cavity at its peripheral A one-piece ring on the outside.
- what is described below offers Process the possibility of joining with conventional To carry out welding techniques, e.g. with the aid of inert gas, induction, Ultrasonic, or arc welding, to name just a few alternative welding techniques to call.
- a one-piece ring between two rotor disks to be welded introduced even before the two rotor disks are firmly welded together become.
- the one rotor disk provides a fixed abutment surface against which the one-piece ring is flush with one of its two opposite side flanks triggers.
- the other rotor disk is designed such that the one-piece ring pushed at least a portion over the other rotor disc can be.
- the other rotor disk is adjacent to the cavity, which is formed by joining the two rotor disks together, an outer diameter on which is smaller than the inside diameter of the one-piece ring.
- the two rotor disks to be used together are at least along a weld seam, starting from the hollow channel, from both rotor disks is enclosed and extends in the direction of the rotor axis, welded.
- the one-piece ring is in the direction of the rotor disc shifted in the area of the hollow channel described above Has outer diameter that is slightly smaller than the inner diameter of the Ring is.
- the ring is made by local spot welding is fixed in its position described above.
- other measures can be taken to get the ring in one of the Hollow channel to keep distant position during welding.
- the ring is then detached from its spot weld and with one of its pressed both sides on the fixed abutment surface of the rotor disc.
- the welding process to be carried out in the following can be carried out as in the above described case by means of electron beam welding, of course conventional welding techniques can also be used.
- the manufacturing methods according to the invention described above relate to a simplified assembly of welded rotors that are inside the rotor shaft Provide cooling channels for cooling purposes through which cooling steam is driven. It is of decisive advantage to take advantage of that with the electron welding technology related benefits.
- Fig. 1 shows a highly schematic representation of a cross section through the adjacent Areas of two rotor disks 1, 2 on the hollow channel 5, through the a cooling medium is driven.
- the hollow channel 5 is on the one hand through the rotor disks 1 and 2 limited, which under the hollow channel 5 via a weld seam 3rd are firmly connected. Open left and right on the hollow channel 5 Cooling channels 4 which pass through and through the rotor disks 1 and 2 accordingly the coolant is introduced or discharged into the hollow channel 5.
- the cavity 5 enclosed by the two rotor disks 1 and 2 is in the Area 6 designed open on its peripheral outside.
- the rotor disks 1 and 2 close to the side facing away from the rotor adjacent to the hollow channel Gap 7 through which the two rotor disks 1 and 2 are welded the one required for the production of the weld seam 3 in the case of electron beam welding Welding beam can be directed.
- Electron beam welding is also capable to establish a firm connection along the circumferential seams 10 and in this way a firm connection between the ring elements 8 and the rotor disks 1 and 2.
- centering lips 11 are provided for welding separating edges serve to avoid through-welds, which often lead to the formation of beads and droplets of material are directly connected to the weld groove.
- FIG. 2 shows a detailed illustration of the lower end of the peripheral seam 10 in accordance with FIG Figure 1 shown.
- the centering lip 11 attached, the Ring element 8 slightly overlooked on its underside.
- a distance ⁇ typically remains between Radiant or weld seam end and inner contour of approx. 2-5 mm.
- Relief grooves are concave contours, which immediately connect to a weld seam elevation and a smooth one Transition from the weld seam to the contour of the adjoining one Serve molded part (see also Figure 3 with the relief grooves 18).
- the rotor disks 1 and 2 are available.
- the rotor disk 2 points in the area an outer contour on the outer diameter of the hollow channel 5 12 approximately less than or equal to the inner diameter 13 of the one-piece design Ring element 8 corresponds. In this way, the ring element 8 can at least can be shifted a bit over the rotor disc 2 to the right.
- the one-piece ring 8 is pushed over the rotor disk 2 and there provisionally attached, for example with the help of a spot weld connection.
- the rotor disc 1 is placed on the rotor disc 2 and the Weld 14 welded, the following with the help of known quality inspection methods can be checked. This is how it usually forms a rough surface elevation on the weld seam surface, which with Using suitable ablation techniques, such as grinding or turning, can be reworked to a smooth surface.
- the ring 8 After completion of the weld seam 14, which, as already mentioned above, can be produced with the aid of conventional welding techniques, the ring 8 is shifted to the left until the ring abuts a centering lip 17 of the rotor disk 1 (see here the detailed illustration in FIG. 3). .
- the weld seam 15 can be filled out.
- the weld 16 that fills the ring 8 with the rotor disk 2 is filled.
- the displaceability of the ring 8 over the outer contour of the rotor disk 2 makes it possible to produce three weld seams in a conventional manner in order to finally close a cavity 5 between the rotor disks 1 and 2.
- the necessary space is usually available at the end of rotor parts.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Materialschäden nicht ausgeschlossen werden können.
- Fig. 1
- Querschnitt durch einen erfindungsgemäß verschweißten Hohlkanal mittels Elektronenstrahlschweißtechnik,
- Fig. 2
- schematisierte Darstellung einer Zentrierlippe und
- Fig. 3
- schematisierte Querschnittsdarstellung durch einen verschweißten Rotor mit Hohlkanal mit einem einteiligen Ring als Abdichtelement des Hohlkanals.
Schließlich wird die Schweißnaht 16 aufgefüllt, die den Ring 8 mit der Rotorscheibe 2 fest verbindet..
Dernötige Raum ist meist am Ende von Rotorteilen vorhanden.
- 1
- Rotorscheibe
- 2
- Rotorscheibe
- 3
- Schweißnaht
- 4
- Kühlkanal
- 5
- Hohlkanal
- 6
- Offener Bereich des Hohlraums
- 7
- Spalt
- 8
- Ringelement
- 9
- Stoßfläche
- 10
- Umfangsnaht
- 11
- Zentrierlippe
- 12
- Außendurchmesser der Rotorscheibe 2
- 13
- Innendurchmesser des Rings
- 14,15,16
- Schweißnähte
- 17
- Zentrierlippe
- 18
- Entlastungsnut
Claims (10)
- Verfahren zur Herstellung eines geschweißten Rotors einer Strömungsmaschine, der durch rotorinterne Zu- und Abströmungskanäle von einem Kühlmedium durchströmt wird und aus mehreren Rotorscheiben (1, 2) zusammengesetzt ist, die durch radial oder weitgehend radial zur Rotorachse verlaufende Schweißnähte (3) miteinander verbunden werden und jeweils einen um die Rotorachse verlaufenden Hohlkanal (5) miteinander einschließen, der die Schweißnähte (3) derart unterbricht, daß eine rotorseitig zugewandte Schweißnaht (3) unmittelbar an den Hohlkanal (5) angrenzt, dadurch gekennzeichnet, daß zwei unmittelbar aneinandergrenzende Rotorscheiben (1, 2) entlang wenigstens einer Naht (3), die sich ausgehend von dem Hohlkanal (5), der von beiden Rotorscheiben (1, 2) eingeschlossen wird, in Richtung Rotorachse erstreckt, miteinander verschweißt werden, daß der rotorseitig abgewandte Bereich des Hohlkanals (5) an seiner peripheren Außenseite (6) wenigstens teilweise offen ausgebildet ist und daß beide Rotorscheiben (1, 2) einen Spalt (7) einschließen, der sich rotorseitig abgewandt unmittelbar an den Hohlkanal (5) anschließt und in den ein, aus wenigstens zwei Teilelementen bestehendes Ringelement (8) eingebracht wird, und daß die Teilelemente des Ringelementes (8) an ihren gegenüberliegenden Stoßflächen (9) miteinander sowie mit Ihren Seitenflanken an den diesen gegenüberliegenden Rotorscheiben (1, 2) verfügt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Verfügen der Stoßkanten (9) der Teilelemente des Ringelements (8) miteinander und/oder der Seitenflanken mit den Rotorscheiben (1, 2) mittels Elektronenstrahlschweißen durchgeführt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß zur Entlastung der beim Schweißen entstehenden Schweißnaht eine Entlastungsnut (18) eingearbeitet wird.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß an den Schweißstellen jeweils eine Zentrierlippe (11) eingearbeitet wird, die einen Vorsprung an der Nahtoberfläche beider zu verschweißenden Teile vorsieht, die vom Schweißstrahl nicht duchrtrennt wird.
- Verfahren zur Herstellung eines geschweißten Rotors einer Strömungsmaschine, der durch rotorinterne Zu- und Abströmungskanäle von einem Kühlmedium durchströmt wird und aus mehreren Rotorscheiben (1, 2) zusammengesetzt ist, die durch radial oder weitgehend radial zur Rotorachse verlaufende Schweißnähte (14, 15, 16) miteinander verbunden werden und jeweils einen um die Rotorachse verlaufenden Hohlkanal (5) miteinander einschließen, der die Schweißnähte (14, 15, 16) derart unterbricht, daß eine rotorseitig zugewandte Schweißnaht unmittelbar an den Hohlkanal (5) angrenzt, dadurch gekennzeichnet, daß zwischen zwei zu verschweißenden Rotorscheiben (1, 2) ein einteiliger Ring (8) eingebracht wird, der einseitig gegen eine Zentrierlippe (17) an der einen Rotorscheibe (1) anstößt und in Richtung der anderen Rotorscheibe (2) bewegbar ist, daß die zwei unmittelbar aneinandergrenzende Rotorscheiben (1, 2) entlang wenigstens einer Schweißnaht (14), die sich ausgehend von dem Hohlkanal (5), der von beiden Rotorscheiben (1, 2) eingeschlossen wird, in Richtung Rotorachse erstreckt, miteinander verschweißt werden, wobei der Ring (8) in Richtung der anderen Rotorscheibe (2) verschoben ist, daß der rotorseitig abgewandte Bereich (6) des Hohlkanals an seiner peripheren Außenseite wenigstens teilweise offen ausgebildet ist, über den der Ring (8) derart positioniert wird, daß der Ring (8) mit der einen Rotorscheine (1) und anschließend mit der anderen Rotorscheibe (2) verschweißt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die ausgehend von dem Hohlkanal (5), der von beiden Rotorscheiben (1, 2) eingeschlossen wird, in Richtung Rotorachse erstreckende Schweißnaht (14) als Flächenschweißnaht ausgebildet wird.
- Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß vor dem Verschweißen beider Rotorscheiben (1, 2) der Ring (8) beabstandet von der einen Rotorscheibe (1) und in einer Stellung, in der der Hohlkanal (5) einseitig geöffnet ist, an der anderen Rotorscheibe (2) provisorisch befestigt wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die provisorische Befestigung des Rings (8) an der anderen Rotorscheibe (2) durch Punktschweißen erfolgt.
- Verfahren nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß die Schweißnähte (14, 15, 16) mit Elektronenstrahlschweißen oder mit konventionellem Schweißen gefertigt werden.
- Verfahren nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die andere Rotorscheibe (2) im Bereich des Hohlkanals (5) einen Durchmesser aufweist, der kleiner als der innere Ringdurchmesser ist.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03100886A EP1342882B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
DE59809583T DE59809583D1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
EP98811218A EP1008722B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
US09/456,333 US6519849B2 (en) | 1998-12-10 | 1999-12-08 | Method for the manufacture of a welded rotor of a fluid-flow machine |
US10/323,663 US6687994B2 (en) | 1998-12-10 | 2002-12-20 | Method for the manufacture of a welded rotor of a fluid-flow machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98811218A EP1008722B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03100886A Division-Into EP1342882B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
EP03100886A Division EP1342882B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1008722A1 true EP1008722A1 (de) | 2000-06-14 |
EP1008722B1 EP1008722B1 (de) | 2003-09-10 |
Family
ID=8236478
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98811218A Expired - Lifetime EP1008722B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
EP03100886A Expired - Lifetime EP1342882B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03100886A Expired - Lifetime EP1342882B1 (de) | 1998-12-10 | 1998-12-10 | Verfahren zur Herstellung eines geschweissten Rotors einer Strömungsmaschine |
Country Status (3)
Country | Link |
---|---|
US (2) | US6519849B2 (de) |
EP (2) | EP1008722B1 (de) |
DE (1) | DE59809583D1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10348422B4 (de) | 2003-10-14 | 2015-04-23 | Alstom Technology Ltd. | Thermisch belastetes Bauteil, sowie Verfahren zur Herstellung eines solchen Bauteils |
US7281901B2 (en) * | 2004-12-29 | 2007-10-16 | Caterpillar Inc. | Free-form welded power system component |
US7473475B1 (en) * | 2005-05-13 | 2009-01-06 | Florida Turbine Technologies, Inc. | Blind weld configuration for a rotor disc assembly |
US20070189894A1 (en) * | 2006-02-15 | 2007-08-16 | Thamboo Samuel V | Methods and apparatus for turbine engine rotors |
EP1895094B1 (de) * | 2006-08-25 | 2010-09-29 | Siemens Aktiengesellschaft | Drallgekühlte Rotor-Schweissnaht |
US20090060735A1 (en) * | 2007-08-31 | 2009-03-05 | General Electric Company | Turbine rotor apparatus and system |
US8997498B2 (en) | 2011-10-12 | 2015-04-07 | General Electric Company | System for use in controlling the operation of power generation systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1549070A (en) * | 1977-12-12 | 1979-08-01 | Rolls Royce | Gas turbine engine compressor rotor construction |
US5507620A (en) * | 1993-07-17 | 1996-04-16 | Abb Management Ag | Gas turbine with cooled rotor |
EP0844367A1 (de) | 1996-11-21 | 1998-05-27 | Asea Brown Boveri AG | Geschweisster Rotor einer Strömungsmaschine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE787441A (fr) * | 1971-08-23 | 1973-02-12 | Alsthom Cgee | Rotor soude |
CH563833A5 (de) * | 1974-10-28 | 1975-07-15 | Bbc Brown Boveri & Cie | |
AT374397B (de) * | 1980-07-21 | 1984-04-10 | Puschner Manfred Dr | Verfahren zur kontinuierlichen herstellung von fuelldraehten, fuelldrahtelektroden od. dgl. |
US4598449A (en) * | 1981-12-21 | 1986-07-08 | United Technologies Corporation | Beam for a containment structure |
US5221821A (en) * | 1992-01-10 | 1993-06-22 | Crompton & Knowles Corporation | Method for producing an extruder barrel assembly |
US5593274A (en) * | 1995-03-31 | 1997-01-14 | General Electric Co. | Closed or open circuit cooling of turbine rotor components |
JP2941698B2 (ja) * | 1995-11-10 | 1999-08-25 | 三菱重工業株式会社 | ガスタービンロータ |
GB2307520B (en) * | 1995-11-14 | 1999-07-07 | Rolls Royce Plc | A gas turbine engine |
US5632600A (en) * | 1995-12-22 | 1997-05-27 | General Electric Company | Reinforced rotor disk assembly |
DE19713268B4 (de) * | 1997-03-29 | 2006-01-19 | Alstom | Gekühlte Gasturbinenschaufel |
DE19738065A1 (de) * | 1997-09-01 | 1999-03-04 | Asea Brown Boveri | Turbinenschaufel einer Gasturbine |
EP0972910B1 (de) * | 1998-07-14 | 2003-06-11 | ALSTOM (Switzerland) Ltd | Berührungsloses Abdichten von Spalten in Gasturbinen |
-
1998
- 1998-12-10 DE DE59809583T patent/DE59809583D1/de not_active Expired - Lifetime
- 1998-12-10 EP EP98811218A patent/EP1008722B1/de not_active Expired - Lifetime
- 1998-12-10 EP EP03100886A patent/EP1342882B1/de not_active Expired - Lifetime
-
1999
- 1999-12-08 US US09/456,333 patent/US6519849B2/en not_active Expired - Lifetime
-
2002
- 2002-12-20 US US10/323,663 patent/US6687994B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1549070A (en) * | 1977-12-12 | 1979-08-01 | Rolls Royce | Gas turbine engine compressor rotor construction |
US5507620A (en) * | 1993-07-17 | 1996-04-16 | Abb Management Ag | Gas turbine with cooled rotor |
EP0844367A1 (de) | 1996-11-21 | 1998-05-27 | Asea Brown Boveri AG | Geschweisster Rotor einer Strömungsmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP1342882A2 (de) | 2003-09-10 |
US20030084568A1 (en) | 2003-05-08 |
EP1008722B1 (de) | 2003-09-10 |
DE59809583D1 (de) | 2003-10-16 |
US6519849B2 (en) | 2003-02-18 |
US20020092165A1 (en) | 2002-07-18 |
EP1342882A3 (de) | 2004-05-06 |
EP1342882B1 (de) | 2006-05-17 |
US6687994B2 (en) | 2004-02-10 |
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