EP0873467A2 - Bearing system for turbomachine assembly - Google Patents
Bearing system for turbomachine assemblyInfo
- Publication number
- EP0873467A2 EP0873467A2 EP96946245A EP96946245A EP0873467A2 EP 0873467 A2 EP0873467 A2 EP 0873467A2 EP 96946245 A EP96946245 A EP 96946245A EP 96946245 A EP96946245 A EP 96946245A EP 0873467 A2 EP0873467 A2 EP 0873467A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- shaft
- bearings
- machine set
- set according
- 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.)
- Withdrawn
Links
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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
- F02C3/10—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor with another turbine driving an output shaft but not driving the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
Definitions
- the invention relates to a machine set comprising a rotatable shaft train, two machines seated thereon, which exchange energy between one another by rotation of the shaft train, and a plurality of bearings, each of which supports the shaft train.
- the invention relates in particular to a machine set with a first machine in the form of a turbine, in particular a free-running gas turbine, and a second machine in the form of a generator.
- the rotating shaft train transmits mechanical energy, which is obtained from the turbine by relaxing a flow medium, to the generator, which converts the mechanical energy into electricity.
- a "free-running gas turbine” is understood to mean a turbine which is acted upon by a fluid in the manner of a hot flue gas, the fluid being not provided for condensation behind the turbine, and which turbine is not mechanically operatively connected to it another machine in the manner of a turbo compressor or the like; the turbine is only mechanically coupled to the other machine of the machine set.
- gas turbine in the present context does not correspond to the widespread practice according to which a gas turbine comprises a unit comprising a compressor for providing compressed air, a combustion device for burning a fuel in the compressed air to form a flue gas and at least one turbine in the actual sense to relax the flue gas.
- a gas turbine plant for the purpose of differentiation.
- the invention relates in particular to a machine set with a turbine which is part of a gas turbine plant of the so-called "two-shaft type".
- a gas turbine system of the two-shaft type contains two turbines which are seated on different shaft trains. One of the turbines and a compressor, which is driven by the first shaft train, sit on a first shaft train.
- the other turbine is seated on a second shaft train, and this other turbine is connected via the second shaft train to an external driven machine, for example a generator.
- an external driven machine for example a generator.
- the other turbine, the second shaft train and the driven machine form a machine set which can be designed as stated in the introduction.
- the shaft train is supported twice in each machine, so that a total of at least four bearings support the shaft train.
- each machine has its own shaft, which is supported at least twice, and the shaft train is formed by coupling the shafts together.
- the object of the invention is to significantly simplify the machine set of the type mentioned.
- a machine set comprising a rotatable shaft train, two machines sitting on it, which exchange energy between one another by rotation of the shaft train, and a large number of bearings, each of which supports the shaft train, only three bearings being present.
- the invention is based on the surprising finding that it is sufficient to load a shaft train intended for the exchange of energy between two machines only three times.
- the bearings in the machine set are preferably distributed such that a bearing is directly adjacent to a first machine of the machine set and two bearings are directly adjacent to a second machine of the machine set.
- the first machine preferably additionally has a guide ring which surrounds the shaft train, by means of which the shaft train can be supported in the event of a deformation from a normal shape.
- the bearing immediately adjacent to the first machine is, in particular, an internal bearing installed in the first machine.
- the term "immediately adjacent” does not mean that the bearings and the machines in the machine set should be spaced apart.
- the bearings can very well be integral parts of the machines.
- the first machine is preferably a turbine, in particular a free-running gas turbine, and the second machine is preferably a generator.
- the first machine can also be the generator and the second machine the turbine.
- the turbine can be of such a type that when it is operating it exerts an axial thrust on the shaft train, that is to say a force directed in a longitudinal direction of the shaft train.
- This force has to be absorbed, and for this purpose one of the bearings in particular is a bearing that absorbs such an axial thrust, that is to say an axial bearing.
- This thrust bearing can be any of the three bearings; The positioning of the thrust bearing can be decided according to the circumstances of the individual case.
- the two other bearings can be simple radial bearings, which only absorb forces that are directed perpendicular to the longitudinal direction of the shaft train.
- the shaft train is formed from two partial shafts and an intermediate shaft coupled to the partial shafts between the partial shafts and between the machines, which has a bending stiffness which is significantly lower than the bending stiffness of the partial shafts, and in which each bearing is of the Intermediate shaft spaced supports the shaft train.
- a possible bearing offset between the machines is essentially compensated for by the intermediate shaft, in that it is bent accordingly.
- the load on the bearings and the load on couplings in the shaft train can be limited to an appropriate level by a suitable choice of the bending stiffness.
- the intermediate shaft can consist of a metal or a fiber-reinforced, in particular glass-fiber-reinforced, plastic.
- each natural frequency that results in a bending vibration of the intermediate ridge wave belongs, significantly different from the nominal frequency or an integer multiple of the nominal frequency.
- This configuration prevents the intermediate shaft, which may have been bent, from being excited into a bending vibration when the machine set is operated as intended.
- the intermediate shaft is to be regarded as a damped resonator.
- an excitation In order to excite the intermediate wave into a bending oscillation, an excitation therefore does not have to take place exactly with a natural frequency, but also an excitation with a frequency slightly different from a natural frequency can excite the intermediate wave into a forced bending oscillation. The extent to which this occurs a deviation from the natural frequency is possible is determined by corresponding parameters of the shaft train. "Substantially different" means that there is no significant excitation of a bending vibration with a corresponding excitation.
- the bearings in the machine set of any configuration can be slide bearings or roller bearings, depending on the circumstances of the respective individual case, roller bearings in particular being considered as roller bearings.
- the machine set of any configuration is designed in particular for exchanging the energy with a power between 25 megawatts and 250 megawatts, in particular of about 200 megawatts. This comes into consideration especially in the event that the machine is a free-running gas turbine and a generator.
- Such a machine set forms, for example, an essential component of a gas turbine power plant or a combination power plant, in which an exhaust gas released from the gas turbine is fed to a steam boiler, where it is used to provide a high-tension steam to be relaxed in a correspondingly provided steam turbine.
- 1, 2 and 3 show schematic drawings of exemplary embodiments for a machine set in the sense of the above embodiments; 4 shows a part of a longitudinal section through a gas turbine system with a turbine which is part of a corresponding machine set.
- FIGS. 1, 2 and 3 Each of which shows a machine set with a first machine 1 in the form of a free-running gas turbine 1, a second machine 2, namely a generator 2, and a shaft train 3 , on which machines 1 and 2 are seated and, when rotating, machines 1 and 2 exchange energy between them.
- the exchange of energy takes place in such a way that the free-running gas turbine 1 drives the generator 2 via the shaft train 3; the free-running gas turbine 1 converts thermodynamic energy into mechanical energy which flows along the shaft train 3 to the generator 2 and is converted there into electromagnetic energy.
- the shaft train 3 is supported in three bearings 4 and 5, whereby a bearing 4 is arranged in the immediate vicinity of the first machine 1 and two bearings 4 and 5 are arranged in the immediate vicinity of the second machine 2.
- the bearings 4, 5 comprise two radial bearings 4 for absorbing forces perpendicular to a longitudinal direction of the shaft train 3 and an axial bearing 5 for receiving an axial thrust communicated to the shaft train 3.
- the thrust bearing 5 also has the same functions as a radial bearing 4.
- the shaft train 3 is coupled together from an intermediate shaft 7 arranged between the machines 1, 2 and two other parts 6, each of which is a shaft crossing one of the machines 1 or 2.
- the parts 6 and 7 are coupled together on respective couplings 9.
- the arrangement of the single bearing 4 on the first machine 1 can also take into account the requirements of the respective individual case. According to FIG. 1, this bearing 4 is located on a side of the first machine 1 facing away from the intermediate shaft 7. According to FIG. 2, this bearing is located inside the first machine 1, and according to FIG side of the first machine 1.
- the intermediate shaft 7 fulfills specific functions in each of the exemplary embodiments. First of all, by providing it, space can be created between the machines 1 and 2 in order to provide an exhaust gas routing system for discharging exhaust gas from the free-running gas turbine 1 in the vicinity of the shaft line 3. This is necessary in the sense of many known constructions, since gas turbines with a higher output in particular require an axial outflow of their exhaust gases. In the present context, it is also important that the intermediate shaft 7 can be designed in such a way that it is easily bendable and can essentially compensate for any misalignment between the different bearings 4 and 5 alone. For this purpose, the intermediate shaft 7 is designed with a comparatively low bending stiffness, measured on the bending stiffness of the other parts 6.
- the intermediate shaft 7 It is also important to design the intermediate shaft 7 so that it does not tend to vibrate when the machine set is operated as intended; Such bending vibrations can occur in particular if the intermediate shaft 7 is slightly bent due to an offset between the bearings 4 and 5.
- the intermediate shaft 7 is designed in such a way that any natural frequency which corresponds to a possible bending vibration of the intermediate shaft 7 is significantly different in the sense of the statements made earlier of a nominal frequency or a multiple of the nominal frequency with which the shaft train 3 at intended operation of the machine set rotates.
- the load on the bearings 4 and 5 and the couplings 9 can also be set by selecting the bending stiffness and other parameters of the intermediate shaft 7, in particular their mass.
- the intermediate shaft 7 and possibly the other parts 6 of the shaft train 3 in such a way that at least one of the couplings 9 even with a certain bending of the shaft train 3, which possibly already when the Shaft strand 3 is to be expected due to the distribution of the mass, is not loaded with torque or bending moments.
- a careful selection of the material for the production of the intermediate shaft 7 can be important; not only common metals, but also plastics, in particular carbon or glass fiber reinforced plastics, come into consideration for this purpose.
- FIG. 4 shows part of a longitudinal section through a gas turbine system which contains a free-running gas turbine 1 which belongs to a machine set of the type just explained.
- a bearing 4 is provided in accordance with the exemplary embodiment according to FIG.
- a shaft 6 in the interior of the free-running gas turbine 1 is formed from disks screwed together and arranged one behind the other.
- the radial bearing 4 on the left side is assigned to this shaft 6.
- REPLACEMENT BUTT (RULE 26) ken side of the free-running gas turbine 1 and a guide ring 8 on the right side of the free-running gas turbine 1, which guide ring 8 does not touch the shaft 6 during its intended operation, but leaves a small gap, not visible in Figure 4.
- the shaft 6 should only touch the guide ring 8 if it is severely deformed, for example in the context of an accident. Such a fault can occur, for example, if there is a break in the free-running gas turbine 1.
- the intermediate shaft 7 is coupled to the shaft 6 at a clutch 9.
- a common bearing housing 10 is provided for mounting both gas turbines 1 and 11. Both gas turbines 1 and 11 are also surrounded by a common turbine housing 12.
- the invention provides a machine set with two machines 1 and 2 coupled via a shaft train 3, which is particularly simple and therefore inexpensive in view of the necessary mounting of the shaft train 3.
- FIG. 1 A first figure.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Support Of The Bearing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention concerns a machine assembly comprising a rotating shaft (3) and two machines (1, 2) connected to it which exchange energy with one another through rotation of the shaft (3), as well as a number of bearings (4, 5) supporting the shaft (3). There are only three bearings (4, 5) provided in this machine assembly. The first machine (1) is in particular a free-running gas turbine (1), and the second machine (2) is in particular a generator (2).
Description
Beschreibungdescription
LAGERUNG FÜR EINEN TURBOMASCHINENSATZSTORAGE FOR A TURBO MACHINE SET
Die Erfindung betrifft einen Maschinensatz, umfassend einen drehbaren Wellenstrang, zwei auf diesem aufsitzende Maschi¬ nen, welche durch Rotation des Wellenstranges zwischenein- ander Energie austauschen, sowie eine Vielzahl von Lagern, deren jedes den Wellenstrang lagert.The invention relates to a machine set comprising a rotatable shaft train, two machines seated thereon, which exchange energy between one another by rotation of the shaft train, and a plurality of bearings, each of which supports the shaft train.
Die Erfindung bezieht sich insbesondere auf einen Maschinen¬ satz mit einer ersten Maschine in Form einer Turbine, insbe¬ sondere einer freilaufenden Gasturbine, sowie einer zweiten Maschine in Form eines Generators. Bei einem solchen Maschi- nensatz überträgt der rotierende Wellenstrang mechanische Energie, die von der Turbine durch Entspannung eines Strö¬ mungsmittels gewonnen wird, zu dem Generator, welcher die me¬ chanische Energie in Elektrizität umwandelt. Unter einer "freilaufenden Gasturbine" wird in diesem Zusammenhang eine Turbine verstanden, die mit einem Strömungsmittel nach Art eines heißen Rauchgases beaufschlagt ist, wobei das Strö¬ mungsmittel nicht vorgesehen ist zur Kondensation hinter der Turbine, und welche Turbine nicht in mechanischer Wirkverbin¬ dung mit einer weiteren Maschine nach Art eines Turbokompres- sors oder dergleichen steht; die Turbine ist lediglich mit der anderen Maschine des Maschinensatzes mechanisch verkup¬ pelt. Der Gebrauch des Wortes "Gasturbine" im vorliegenden Zusammenhang entspricht nicht der weit verbreiteten Praxis, gemäß derer eine Gasturbine eine Einheit aus Kompressor zur Bereitstellung verdichteter Luft, Verbrenungseinrichtung zur Verbrennung eines Brennstoffes in der verdichteten Luft unter Bildung eines Rauchgases und zumindest einer Turbine im eigentlichen Sinne zur Entspannung des Rauchgases ist. Eine solche Kombination wird vorliegend zwecks Unterscheidung als "Gasturbinenanlage" bezeichnet.
Die Erfindung bezieht sich insbesondere auf einen Maschinen¬ satz mit einer Turbine, welche Bestandteil einer Gasturbinen¬ anlage des sogenannten "zweiwelligen Typs" ist. Eine Gastur¬ binenanlage des zweiwelligen Typs beinhaltet zwei Turbinen, die auf verschiedenen Wellensträngen aufsitzen. Auf einem er¬ sten Wellenstrang sitzen eine der Turbinen sowie ein Kom¬ pressor, welcher über den ersten Wellenstrang angetrieben wird. Auf einem zweiten Wellenstrang sitzt die andere Tur¬ bine, und diese andere Turbine ist über den zweiten Wellen- sträng mit einer externen Abtriebsmaschine, beispielsweise einem Generator, verbunden. In diesem Zusammenhang bilden die andere Turbine, der zweite Wellenstrang sowie die Abtriebsma¬ schine einen Maschinensatz, der wie einleitend angegeben, ausgeführt sein kann.The invention relates in particular to a machine set with a first machine in the form of a turbine, in particular a free-running gas turbine, and a second machine in the form of a generator. In such a machine set, the rotating shaft train transmits mechanical energy, which is obtained from the turbine by relaxing a flow medium, to the generator, which converts the mechanical energy into electricity. In this context, a "free-running gas turbine" is understood to mean a turbine which is acted upon by a fluid in the manner of a hot flue gas, the fluid being not provided for condensation behind the turbine, and which turbine is not mechanically operatively connected to it another machine in the manner of a turbo compressor or the like; the turbine is only mechanically coupled to the other machine of the machine set. The use of the word "gas turbine" in the present context does not correspond to the widespread practice according to which a gas turbine comprises a unit comprising a compressor for providing compressed air, a combustion device for burning a fuel in the compressed air to form a flue gas and at least one turbine in the actual sense to relax the flue gas. Such a combination is referred to herein as a "gas turbine plant" for the purpose of differentiation. The invention relates in particular to a machine set with a turbine which is part of a gas turbine plant of the so-called "two-shaft type". A gas turbine system of the two-shaft type contains two turbines which are seated on different shaft trains. One of the turbines and a compressor, which is driven by the first shaft train, sit on a first shaft train. The other turbine is seated on a second shaft train, and this other turbine is connected via the second shaft train to an external driven machine, for example a generator. In this context, the other turbine, the second shaft train and the driven machine form a machine set which can be designed as stated in the introduction.
In einem Maschinensatz, der in der Einleitung genannten Art ist der Wellenstrang in jeder Maschine zweifach gelagert, so daß insgesamt zumindest vier Lager den Wellenstrang lagern. Dies erklärt sich daraus, daß herkömmlicherweise jede Maschi- ne eine eigene Welle besitzt, welche zumindest zweifach ge¬ lagert ist, und der Wellenstrang durch Verkuppeln der Wellen miteinander gebildet wird.In a machine set of the type mentioned in the introduction, the shaft train is supported twice in each machine, so that a total of at least four bearings support the shaft train. This can be explained by the fact that, conventionally, each machine has its own shaft, which is supported at least twice, and the shaft train is formed by coupling the shafts together.
Aufgabe der Erfindung ist es, den Maschinensatz der eingangs genannten Art wesentlich zu vereinfachen.The object of the invention is to significantly simplify the machine set of the type mentioned.
Zur Lösung dieser Aufgabe angegeben wird ein Maschinensatz, umfassend einen drehbaren Wellenstrang, zwei auf diesem auf¬ sitzende Maschinen, welche durch Rotation des Wellenstranges zwischeneinander Energie austauschen, sowie eine Vielzahl von Lagern, deren jedes den Wellenstrang lagert, wobei nur drei Lager vorhanden sind.To achieve this object, a machine set is specified, comprising a rotatable shaft train, two machines sitting on it, which exchange energy between one another by rotation of the shaft train, and a large number of bearings, each of which supports the shaft train, only three bearings being present.
Die Erfindung geht aus von der überraschenden Erkenntnis, daß es ausreichend ist, einen zum Austausch von Energie zwischen zwei Maschinen vorgesehenen Wellenstrang nur dreifach zu la-The invention is based on the surprising finding that it is sufficient to load a shaft train intended for the exchange of energy between two machines only three times.
ERSÄΪZBLÄ1T(REGEL26)
gern. In der Tat erweist sich, daß in jedem nach herkömmli¬ cher Fachkunst ausgeführten Maschinensatz eines von insgesamt vier Lagern überflüssig ist.ERSÄΪZBLÄ1T (REGEL26) gladly. In fact, it turns out that in each machine set designed according to conventional technical expertise, one of a total of four bearings is superfluous.
Vorzugsweise sind die Lager in dem Machinensatz derart ver¬ teilt, daß einer ersten Maschine des Maschinensatzes ein La¬ ger unmittelbar benachbart ist und einer zweiten Maschine des Maschinensatzes zwei Lager unmittelbar benachbart sind. Wei¬ terhin vorzugsweise hat die erste Maschine zusätzlich einen den Wellenstrang umringenden Führungsring, durch welchen der Wellenstrang bei einer Deformation aus einer Normalform ab¬ stützbar ist. Insbesondere diese Weiterbildung gewährleistet ein hohes Maß an Sicherheit gegen unerwünschte Deformationen der Welle, falls es, etwa im Rahmen eines Störfalles, zu starken Deformationen und Schwingungen des Wellenstranges kommt, und sie gewährleistet, daß die erste Maschine in her¬ kömmlicher Weise transportabel ausgeführt werden kann, obwohl sie nur ein einziges Lager für ein in der ersten Maschine vorgesehenes Stück des Wellenstranges aufweist. Bei regulärem Betrieb des Maschinensatzes verbleibt zwischen dem Führungs- ring und dem Wellenstrang ein kleiner Spalt, so daß keine nennenswerte Reibung zwischen dem Führungsring und dem Wel¬ lenstrang auftritt. Lediglich im Rahmen eines Störfalls, oder im Rahmen eines Transports, kommt es zu einem Kontakt zwi- sehen dem Wellenstrang und dem Führungsring, wobei allerdings eine ausreichende Lagerung gewährleistet werden kann.The bearings in the machine set are preferably distributed such that a bearing is directly adjacent to a first machine of the machine set and two bearings are directly adjacent to a second machine of the machine set. Furthermore, the first machine preferably additionally has a guide ring which surrounds the shaft train, by means of which the shaft train can be supported in the event of a deformation from a normal shape. In particular, this further development ensures a high degree of security against undesired deformations of the shaft in the event of severe deformations and vibrations of the shaft train, for example in the context of an accident, and it ensures that the first machine can be carried out in a conventional manner , although it has only a single bearing for a piece of the shaft train provided in the first machine. During regular operation of the machine set, a small gap remains between the guide ring and the shaft train, so that no significant friction occurs between the guide ring and the shaft train. Contact between the shaft train and the guide ring only occurs in the event of an accident or during transport, although adequate storage can be guaranteed.
Das der ersten Maschine unmittelbar benachbarte Lager ist insbesondere ein in der ersten Maschine angebrachtes internes Lager. In diesem Sinne bedeutet der Begriff "unmittelbar be¬ nachbart" nicht, daß die Lager und die Maschinen in dem Ma¬ schinensatz voneinander beabstandet sein müßten. Die Lager können sehr wohl integrale Bestandteile der Maschinen sein.The bearing immediately adjacent to the first machine is, in particular, an internal bearing installed in the first machine. In this sense, the term "immediately adjacent" does not mean that the bearings and the machines in the machine set should be spaced apart. The bearings can very well be integral parts of the machines.
Die erste Maschine ist vorzugsweise eine Turbine, insbeson¬ dere eine freilaufende Gasturbine, und die zweite Maschine
ist vorzugsweise ein Generator. Diese Wahl ist jedoch keines¬ wegs zwingend; je nach den Umständen des jeweiligen Einzel¬ falls kann auch die erste Maschine der Generator und die zweite Maschine die Turbine sein. Wie dem auch sei, so kann die Turbine von einer Art sein, daß sie bei ihrem Betrieb auf den Wellenstrang einen Axialschub, also eine in einer Längs¬ richtung des Wellenstrangs gerichtete Kraft, ausübt. Diese Kraft muß aufgefangen werden, und hierzu ist insbesondere eines der Lager ein einen solchen Axialschub aufnehmendes La- ger, also ein Axiallager. Dieses Axiallager kann jedes der drei Lager sein; über die Positionierung des Axiallagers ist nach den Umständen des jeweiligen Einzelfalls entscheidbar. Die beiden anderen Lager können einfache Radiallager sein, welche lediglich Kräfte aufnehmen, die senkrecht zur Längs- richtung des Wellenstranges gerichtet sind.The first machine is preferably a turbine, in particular a free-running gas turbine, and the second machine is preferably a generator. However, this choice is by no means mandatory; depending on the circumstances of the individual case, the first machine can also be the generator and the second machine the turbine. However that may be, the turbine can be of such a type that when it is operating it exerts an axial thrust on the shaft train, that is to say a force directed in a longitudinal direction of the shaft train. This force has to be absorbed, and for this purpose one of the bearings in particular is a bearing that absorbs such an axial thrust, that is to say an axial bearing. This thrust bearing can be any of the three bearings; The positioning of the thrust bearing can be decided according to the circumstances of the individual case. The two other bearings can be simple radial bearings, which only absorb forces that are directed perpendicular to the longitudinal direction of the shaft train.
Im Rahmen einer besonders bevorzugten Ausgestaltung wird der Wellenstrang gebildet aus zwei Teilwellen und einer zwischen den Teilwellen und zwischen den Maschinen an die Teilwellen angekuppelten Zwischenwelle, die eine Biegesteifigkeit hat, welche wesentlich geringer ist als die Biegesteifigkeiten der Teilwellen, und bei dem jedes Lager von der Zwischenwelle beabstandet den Wellenstrang lagert. Bei dieser Ausgestaltung wird ein eventueller Lagerversatz zwischen den Maschinen im wesentlichen von der Zwischenwelle ausgeglichen, indem diese entsprechend verbogen ist. Durch geeignete Wahl der Biegesteifigkeit kann die Belastung der Lager sowie die Belastung von Kupplungen in dem Wellenstrang in angemessener Höhe begrenzt werden. Die Zwischenwelle kann aus einem Metall oder aus einem faserverstärkten, insbesondere glasfaserverstärkten, Kunststoff bestehen.In a particularly preferred embodiment, the shaft train is formed from two partial shafts and an intermediate shaft coupled to the partial shafts between the partial shafts and between the machines, which has a bending stiffness which is significantly lower than the bending stiffness of the partial shafts, and in which each bearing is of the Intermediate shaft spaced supports the shaft train. In this configuration, a possible bearing offset between the machines is essentially compensated for by the intermediate shaft, in that it is bent accordingly. The load on the bearings and the load on couplings in the shaft train can be limited to an appropriate level by a suitable choice of the bending stiffness. The intermediate shaft can consist of a metal or a fiber-reinforced, in particular glass-fiber-reinforced, plastic.
Bei einem Maschinensatz mit einer Zwischenwelle im Sinne der vorstehenden Ausführungen, welche ausgelegt ist zur Rotation des Wellenstranges mit einer vorbestimmten Nennfrequenz, ist jede Eigenfrequenz, die zu einer Biegeschwingung der Zwi-
schenwelle gehört, wesentlich verschieden von der Nennfre¬ quenz oder einem ganzzahligen Vielfachen der Nennfrequenz. Diese Ausgestaltung vermeidet es, daß die wie erläutert even¬ tuell verbogene Zwischenwelle beim bestimmungsgemäßen Betrieb des Maschinensatzes zu einer BiegeSchwingung angeregt wird. Hinsichtlich jedweder Schwingung, insbesondere jedweder Bie¬ geschwingung, ist die Zwischenwelle als gedämpfter Resonator zu betrachten. Um die Zwischenwelle zu einer Biegeschwingung anzuregen, muß daher eine Anregung nicht genau mit einer Ei- genfrequenz erfolgen, sondern auch eine Anregung mit einer von einer Eigenfrequenz leicht verschiedenen Frequenz kann die Zwischenwelle zu einer erzwungenen Biegeschwingung anre¬ gen. Der Umfang, in dem dabei eine Abweichung von der Eigen¬ frequenz möglich ist, ist festgelegt durch entsprechende Pa- rameter des Wellenstranges. "Wesentlich verschieden" bedeu¬ tet, daß es bei einer entsprechenden Anregung zu keinerlei maßgeblichen Anregungen einer Biegeschwingung kommt.In the case of a machine set with an intermediate shaft in the sense of the preceding explanations, which is designed for rotating the shaft train with a predetermined nominal frequency, each natural frequency that results in a bending vibration of the intermediate ridge wave belongs, significantly different from the nominal frequency or an integer multiple of the nominal frequency. This configuration prevents the intermediate shaft, which may have been bent, from being excited into a bending vibration when the machine set is operated as intended. With regard to any vibration, in particular any bending vibration, the intermediate shaft is to be regarded as a damped resonator. In order to excite the intermediate wave into a bending oscillation, an excitation therefore does not have to take place exactly with a natural frequency, but also an excitation with a frequency slightly different from a natural frequency can excite the intermediate wave into a forced bending oscillation. The extent to which this occurs a deviation from the natural frequency is possible is determined by corresponding parameters of the shaft train. "Substantially different" means that there is no significant excitation of a bending vibration with a corresponding excitation.
Die Lager in dem Maschinensatz jedweder Ausgestaltung können entsprechend den Umständen des jeweiligen Einzelfalls Gleit¬ lager oder Wälzlager sein, wobei als Wälzlager insbesondere Rollenlager in Betracht gezogen werden.The bearings in the machine set of any configuration can be slide bearings or roller bearings, depending on the circumstances of the respective individual case, roller bearings in particular being considered as roller bearings.
Der Maschinensatz jedweder Ausgestaltung ist insbesondere ausgelegt zum Austausch der Energie mit einer Leistung zwi¬ schen 25 Megawatt und 250 Megawatt, insbesondere von etwa 200 Megawatt. Dies kommt vor allem in Betracht für den Fall, daß die Maschine eine freilaufende Gasturbine und ein Gene¬ rator sind. Ein derartiger Maschinensatz bildet beispiels- weise einen wesentlichen Bestandteil eines Gasturbinenkraft¬ werks oder eines Kombinationskraftwerks, bei dem ein aus der Gasturbine entlassenes Abgas einem Dampfkessel zugeführt wird, wo es zur Bereitstellung eines in einer entsprechend vorgesehenen Dampfturbine zu entspannenden, hochgespannten Dampfes dient.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Die Zeichnung beinhaltet mehrere schematische Darstellungen, und die Erläuterung der Zeichnung wird beschränkt auf die im vorliegenden Zusammenhang wichti- gen Merkmale. Im einzelnen zeigen:The machine set of any configuration is designed in particular for exchanging the energy with a power between 25 megawatts and 250 megawatts, in particular of about 200 megawatts. This comes into consideration especially in the event that the machine is a free-running gas turbine and a generator. Such a machine set forms, for example, an essential component of a gas turbine power plant or a combination power plant, in which an exhaust gas released from the gas turbine is fed to a steam boiler, where it is used to provide a high-tension steam to be relaxed in a correspondingly provided steam turbine. Embodiments of the invention are explained below with reference to the drawing. The drawing contains several schematic representations, and the explanation of the drawing is limited to the features that are important in the present context. In detail show:
Fig. 1, Fig. 2 und Fig. 3 Schemazeichnungen von Ausführungs¬ beispielen für einen Maschinensatz im Sinne vorstehender Aus¬ führungen; Fig. 4 einen Teil eines Längsschnittes durch eine Gasturbi¬ nenanlage mit einer Turbine, die Teil eines entsprechenden Maschinensatzes ist.1, 2 and 3 show schematic drawings of exemplary embodiments for a machine set in the sense of the above embodiments; 4 shows a part of a longitudinal section through a gas turbine system with a turbine which is part of a corresponding machine set.
In allen Figuren der Zeichnung tragen einander entsprechende Teilmerkmale und Bestandteile jeweils dasselbe Bezugszeichen. In Anbetracht dessen gelten die nachfolgenden Ausführungen entsprechend für alle Figuren.In all the figures of the drawing, corresponding partial features and components each have the same reference number. In view of this, the following explanations apply accordingly to all figures.
Zunächst wird Bezug genommen auf die Figuren 1, 2 und 3. De- ren jede zeigt einen Maschinensatz mit einer ersten Maschine 1 in Form einer freilaufenden Gasturbine 1, einer zweiten Ma¬ schine 2, nämlich eines Generators 2, sowie eines Wellen¬ stranges 3, auf dem die Maschinen 1 und 2 aufsitzen und über den, wenn er rotiert, die Maschinen 1 und 2 zwischeneinander Energie austauschen. Der Austausch von Energie erfolgt in der Weise, daß die freilaufende Gasturbine l über den Wellen¬ strang 3 den Generator 2 antreibt; dabei wandelt die freilau¬ fende Gasturbine 1 thermodynamisehe Energie um in mechanische Energie, welche entlang des Wellenstranges 3 dem Generator 2 zufließt und dort in elektromagnetische Energie umgewandelt wird.Reference is first made to FIGS. 1, 2 and 3. Each of which shows a machine set with a first machine 1 in the form of a free-running gas turbine 1, a second machine 2, namely a generator 2, and a shaft train 3 , on which machines 1 and 2 are seated and, when rotating, machines 1 and 2 exchange energy between them. The exchange of energy takes place in such a way that the free-running gas turbine 1 drives the generator 2 via the shaft train 3; the free-running gas turbine 1 converts thermodynamic energy into mechanical energy which flows along the shaft train 3 to the generator 2 and is converted there into electromagnetic energy.
Der Wellenstrang 3 ist gelagert in drei Lagern 4 bzw. 5, wo¬ bei in unmittelbarer Nachbarschaft der ersten Maschine l ein Lager 4 angeordnet ist bzw. in unmittelbarer Nachbarschaft der zweiten Maschine 2 zwei Lager 4 und 5 angeordnet sind.
Die Lager 4, 5 umfassen zwei Radiallager 4 zur Aufnahme von Kräften senkrecht zu einer Längsrichtung des Wellenstranges 3 sowie ein Axiallager 5 zur Aufnahme eines dem Wellenstrang 3 mitgeteilten Axialschubs. In den vorliegenden Beispielen hat das Axiallager 5 zusätzlich dieselben Funktionen wie ein Radiallager 4.The shaft train 3 is supported in three bearings 4 and 5, whereby a bearing 4 is arranged in the immediate vicinity of the first machine 1 and two bearings 4 and 5 are arranged in the immediate vicinity of the second machine 2. The bearings 4, 5 comprise two radial bearings 4 for absorbing forces perpendicular to a longitudinal direction of the shaft train 3 and an axial bearing 5 for receiving an axial thrust communicated to the shaft train 3. In the present examples, the thrust bearing 5 also has the same functions as a radial bearing 4.
Der Wellenstrang 3 ist zusammengekuppelt aus einer zwischen den Maschinen 1, 2 angeordneten Zwischenwelle 7 sowie zwei anderen Teilen 6, deren jedes eine eine der Maschinen 1 oder 2 durchquerende Welle ist. Zusammengekuppelt sind die Teile 6 und 7 an jeweiligen Kupplungen 9. Die Anordnung des einzigen Lagers 4 an der ersten Maschine 1 kann im übrigen den Anfor¬ derungen des jeweiligen Einzelfalls Rechnung tragen. Gemäß Figur 1 befindet sich dieses Lager 4 an einer der Zwischen¬ welle 7 abgewandten Seite der ersten Maschine 1. Nach Figur 2 befindet sich dieses Lager im Inneren der ersten Maschine 1, und nach Figur 3 befindet sich dieses Lager 4 an einer der Zwischenwelle 7 zugewandten Seite der ersten Maschine 1.The shaft train 3 is coupled together from an intermediate shaft 7 arranged between the machines 1, 2 and two other parts 6, each of which is a shaft crossing one of the machines 1 or 2. The parts 6 and 7 are coupled together on respective couplings 9. The arrangement of the single bearing 4 on the first machine 1 can also take into account the requirements of the respective individual case. According to FIG. 1, this bearing 4 is located on a side of the first machine 1 facing away from the intermediate shaft 7. According to FIG. 2, this bearing is located inside the first machine 1, and according to FIG side of the first machine 1.
Die Zwischenwelle 7 erfüllt in jedem der Ausführungsbeispiele spezifische Funktionen. Zunächst einmal kann dadurch, daß sie vorgesehen wird, zwischen den Maschinen 1 und 2 Platz ge¬ schaffen werden, um ein Abgasführungsystem zur Abführung von Abgas aus der freilaufenden Gasturbine 1 in der Nähe des Wel¬ lenstrangs 3 vorzusehen. Dies ist im Sinne vieler bekannter Konstruktionen erforderlich, da insbesondere Gasturbinen hö¬ herer Leistung eine axiale Abströmung ihrer Abgase erfordern. Im vorliegenden Zusammenhang von Bedeutung ist auch, daß die Zwischenwelle 7 so ausgestaltet werden kann, daß sie leicht verbiegbar ist und einen eventuellen Versatz zwischen den verschiedenen Lagern 4 und 5 im wesentlichen allein aus¬ gleichen kann. Hierzu wird die Zwischenwelle 7 mit einer ver¬ gleichsweise geringen Biegesteifigkeit, gemessen an den Bie- gesteifigkeiten der anderen Teile 6, ausgeführt. Von Bedeu¬ tung ist auch, die Zwischenwelle 7 so zu gestalten, daß sie
bei einem bestimmungsgemäßen Betrieb des Maschinensatzes nicht zu Biegeschwingungen neigt; solche Biegeschwingungen können sich insbesondere dann ergeben, wenn die Zwischenwelle 7 wegen eines Versatzes zwischen den Lagern 4 und 5 leicht verbogen ist. Zu diesem Zweck wird die Zwischenwelle 7 so ausgelegt, daß jedwede Eigenfrequenz, die einer möglichen Biegeschwingung der Zwischenwelle 7 entspricht, wesentlich verschieden ist im Sinne der bereits früher gemachten Aus¬ führungen von einer Nennfrequenz oder einem vielfachen der Nennfrequenz, mit welcher der Wellenstrang 3 beim bestim¬ mungsgemäßen Betrieb des Maschinensatzes rotiert. Durch ent¬ sprechende Wahl der Biegesteifigkeit sowie anderer Parameter der Zwischenwelle 7, insbesondere ihrer Masse, kann auch die Belastung der Lager 4 und 5 sowie der Kupplungen 9 einge- stellt werden; es ist beispielsweise möglich und erstrebens¬ wert, die Zwischenwelle 7 und ggf. die anderen Teile 6 des Wellenstranges 3 so auszulegen, daß wenigstens eine der Kupp¬ lungen 9 selbst bei einer gewissen Verbiegung des Wellen¬ stranges 3, womit eventuell schon beim Stillstand des Wellen- Stranges 3 aufgrund der Verteilung der Masse zu rechnen ist, nicht mit Dreh- oder Biegemomenten belastet wird. Im Rahmen solcher Erwägungen kann es auf eine sorgfältige Auswahl des Werkstoffes für die Herstellung der Zwischenwelle 7 ankommen; hierzu kommen nicht nur übliche Metalle, sondern auch Kunst- Stoffe, insbesondere kohle- oder glasfaserverstärkte Kunst¬ stoffe, in Betracht.The intermediate shaft 7 fulfills specific functions in each of the exemplary embodiments. First of all, by providing it, space can be created between the machines 1 and 2 in order to provide an exhaust gas routing system for discharging exhaust gas from the free-running gas turbine 1 in the vicinity of the shaft line 3. This is necessary in the sense of many known constructions, since gas turbines with a higher output in particular require an axial outflow of their exhaust gases. In the present context, it is also important that the intermediate shaft 7 can be designed in such a way that it is easily bendable and can essentially compensate for any misalignment between the different bearings 4 and 5 alone. For this purpose, the intermediate shaft 7 is designed with a comparatively low bending stiffness, measured on the bending stiffness of the other parts 6. It is also important to design the intermediate shaft 7 so that it does not tend to vibrate when the machine set is operated as intended; Such bending vibrations can occur in particular if the intermediate shaft 7 is slightly bent due to an offset between the bearings 4 and 5. For this purpose, the intermediate shaft 7 is designed in such a way that any natural frequency which corresponds to a possible bending vibration of the intermediate shaft 7 is significantly different in the sense of the statements made earlier of a nominal frequency or a multiple of the nominal frequency with which the shaft train 3 at intended operation of the machine set rotates. The load on the bearings 4 and 5 and the couplings 9 can also be set by selecting the bending stiffness and other parameters of the intermediate shaft 7, in particular their mass. it is possible and worthwhile, for example, to design the intermediate shaft 7 and possibly the other parts 6 of the shaft train 3 in such a way that at least one of the couplings 9 even with a certain bending of the shaft train 3, which possibly already when the Shaft strand 3 is to be expected due to the distribution of the mass, is not loaded with torque or bending moments. In the context of such considerations, a careful selection of the material for the production of the intermediate shaft 7 can be important; not only common metals, but also plastics, in particular carbon or glass fiber reinforced plastics, come into consideration for this purpose.
Figur 4 zeigt einen Teil eines Längsschnittes durch eine Gasturbinenanlage, welche eine freilaufende Gasturbine 1 be- inhaltet, welche zu einem Maschinensatz der soeben erläuter¬ ten Art gehört. In unmittelbarer Nachbarschaft der freilau¬ fenden Gasturbine 1 ist ein Lager 4 vorgesehen entsprechend dem Ausführungsbeispiel gemäß Figur l. Eine Welle 6 im Inne¬ ren der freilaufenden Gasturbine 1 ist gebildet aus miteinan- der verschraubten und hintereinander angeordneten Scheiben. Dieser Welle 6 zugeordnet sind das Radiallager 4 an der lin-FIG. 4 shows part of a longitudinal section through a gas turbine system which contains a free-running gas turbine 1 which belongs to a machine set of the type just explained. In the immediate vicinity of the free-running gas turbine 1, a bearing 4 is provided in accordance with the exemplary embodiment according to FIG. A shaft 6 in the interior of the free-running gas turbine 1 is formed from disks screwed together and arranged one behind the other. The radial bearing 4 on the left side is assigned to this shaft 6.
ERSATZBUTT(REGEL26)
ken Seite der freilaufenden Gasturbine 1 sowie ein Führungs- ring 8 an der rechten Seite der freilaufenden Gasturbine 1, welcher Führungsring 8 die Welle 6 während deren bestimmungs- gemäßen Betriebs nicht berührt, sondern einen kleinen, in Fi- gur 4 nicht erkennbaren Spalt freiläßt. Die Welle 6 soll den Führungsring 8 nur dann berühren, wenn sie, beispielsweise im Rahmen eines Störfalls, stark deformiert wird. Ein solcher Störfall kann beispielsweise auftreten, wenn es in der frei¬ laufenden Gasturbine 1 zu einem Bruch kommt. An einer Kupp- lung 9 ist die Zwischenwelle 7 an die Welle 6 angekuppelt.REPLACEMENT BUTT (RULE 26) ken side of the free-running gas turbine 1 and a guide ring 8 on the right side of the free-running gas turbine 1, which guide ring 8 does not touch the shaft 6 during its intended operation, but leaves a small gap, not visible in Figure 4. The shaft 6 should only touch the guide ring 8 if it is severely deformed, for example in the context of an accident. Such a fault can occur, for example, if there is a break in the free-running gas turbine 1. The intermediate shaft 7 is coupled to the shaft 6 at a clutch 9.
Links neben der freilaufenden Gasturbine 1 ist eine andere Gasturbine 11 angeordnet, welche einen (nicht dargestellten) Turboverdichter treibt, aus dem verdichtete Luft einer (ebenfalls nicht dargestellten) Verbrennungsanlage zugeführt wird, wo in dieser Luft ein Brennstoff unter Bildung eines Rauchgases verbrennt, welches Rauchgas zunächst der anderen Turbine 11 und dann der freilaufenden Gasturbine 1 zugestellt wird. Zur Lagerung beider Gasturbinen 1 und 11 ist ein ge- meinsames Lagergehäuse 10 vorgesehen. Beide Gasturbinen 1 und 11 sind außerdem von einem gemeinsamen Turbinengehäuse 12 umgeben.To the left of the free-running gas turbine 1 there is another gas turbine 11 which drives a turbocompressor (not shown) from which compressed air is fed to an incinerator (also not shown), where a fuel burns in this air to form a flue gas, which flue gas first the other turbine 11 and then the free-running gas turbine 1 is delivered. A common bearing housing 10 is provided for mounting both gas turbines 1 and 11. Both gas turbines 1 and 11 are also surrounded by a common turbine housing 12.
Die Erfindung stellt einen Maschinensatz mit zwei über einen Wellenstrang 3 verkuppelten Maschinen 1 und 2 bereit, welcher im Hinblick auf die notwendige Lagerung des Wellenstranges 3 besonders einfach und somit kostenkünstig gestaltet ist.The invention provides a machine set with two machines 1 and 2 coupled via a shaft train 3, which is particularly simple and therefore inexpensive in view of the necessary mounting of the shaft train 3.
FIG 1
FIG. 1
Claims
l. Maschinensatz, umfassend einen drehbaren Wellenstrang (3), zwei auf diesem aufsitzende Maschinen (l, 2) , welche durch Rotation des Wellenstranges (3) zwischeneinander Energie aus¬ tauschen, sowie eine Vielzahl von Lagern (4, 5) , deren jedes den Wellenstrang (3) lagert, d a d u r c h g e k e n n z e i c h n e t , daß nur drei Lager (4 , 5 ) vorhanden sind .l. Machine set comprising a rotatable shaft train (3), two machines (1, 2) seated thereon, which exchange energy between one another by rotation of the shaft train (3), and a large number of bearings (4, 5), each of which supports the shaft train (3) supports, characterized in that only three bearings (4, 5) are available.
2. Maschinensatz nach Anspruch 1, bei dem die Maschinen (l, 2) eine erste Maschine (1) und eine zweite Maschine (2) sind, wobei der ersten Maschine (1) ein Lager (4, 5) unmittelbar benachbart ist und wobei der zweiten Maschine (2) zwei Lager (4, 5) unmittelbar benachbart sind.2. Machine set according to claim 1, wherein the machines (1, 2) are a first machine (1) and a second machine (2), wherein the first machine (1) is a bearing (4, 5) immediately adjacent and wherein the second machine (2) has two bearings (4, 5) immediately adjacent.
3. Maschinensatz nach Anspruch 2, bei dem die erste Maschine (1) zusätzlich einen den Wellenstrang (3) umringenden Füh¬ rungsring (8) aufweist, durch welchen der Wellenstrang (3) bei einer Deformation aus einer Normalform abstützbar ist.3. Machine set according to claim 2, wherein the first machine (1) additionally has a guide ring (8) surrounding the shaft train (3), by means of which the shaft train (3) can be supported in the event of a deformation from a normal shape.
4. Maschinensatz nach Anspruch 2 oder 3, bei dem das der er¬ sten Maschine (1) unmittelbar benachbarte Lager (4, 5) ein in der ersten Maschine (1) angebrachtes internes Lager (4, 5) ist.4. Machine set according to claim 2 or 3, in which the first machine (1) immediately adjacent bearing (4, 5) is an internal bearing (4, 5) attached in the first machine (1).
5. Maschinensatz nach einem der Ansprüche 2 bis 4, bei dem die erste Maschine (1) eine Turbine (1) , insbesondere eine freilaufende Gasturbine (1) , und die zweite Maschine (2) ein Generator (2) ist.5. Machine set according to one of claims 2 to 4, wherein the first machine (1) is a turbine (1), in particular a free-running gas turbine (1), and the second machine (2) is a generator (2).
6. Maschinensatz nach einem der Ansprüche 1 bis 4, bei dem die Maschinen (1, 2) eine Turbine (1) , insbesondere eine freilaufende Gasturbine (1) , sowie ein Generator (2) sind. 6. Machine set according to one of claims 1 to 4, wherein the machines (1, 2) are a turbine (1), in particular a free-running gas turbine (1), and a generator (2).
7. Maschinensatz nach Anspruch 5 oder 6, bei dem eines der Lager (4, 5) ein einen Axialschub aufnehmendes Lager (5) ist.7. Machine set according to claim 5 or 6, wherein one of the bearings (4, 5) is an axial thrust bearing (5).
8. Maschinensatz nach einem der vorhergehenden Ansprüche, bei dem der Wellenstrang (3) gebildet wird aus zwei Teilwellen8. Machine set according to one of the preceding claims, in which the shaft train (3) is formed from two partial shafts
(6) und einer zwischen den Teilwellen (6) und zwischen den Maschinen (l, 2) an die Teilwellen (6) angekuppelten Zwi¬ schenwelle (7) , die eine Biegesteifigkeit hat, welche wesent¬ lich geringer ist als die Biegesteifigkeiten der Teilwellen (6) , und bei dem jedes Lager (4, 5) von der Zwischenwelle (7) beabstandet den Wellenstrang (3) lagert.(6) and an intermediate shaft (7) coupled to the partial shafts (6) between the partial shafts (6) and between the machines (1, 2), which has a bending stiffness which is substantially lower than the bending stiffness of the partial shafts (6), and in which each bearing (4, 5) at a distance from the intermediate shaft (7) supports the shaft train (3).
9. Maschinensatz nach Anspruch 8, bei dem die Zwischenwelle9. Machine set according to claim 8, wherein the intermediate shaft
(7) aus einem Metall oder aus einem faserverstärkten, insbe- sondere glasfaserverstärkten, Kunststoff besteht.(7) consists of a metal or a fiber-reinforced, in particular glass-fiber-reinforced, plastic.
10. Maschinensatz nach Anspruch 8 oder 9, welcher ausgelegt ist zur Rotation des Wellenstranges (3) mit einer vorbestimm¬ ten Nennfrequenz, und bei dem jede Eigenfrequenz, die zu ei- ner BiegeSchwingung der Zwischenwelle (7) gehört, wesentlich verschieden von der Nennfrequenz oder einem ganzzahligen Vielfachen der Nennfrequenz ist .10. Machine set according to claim 8 or 9, which is designed to rotate the shaft train (3) with a predetermined nominal frequency, and at which each natural frequency belonging to a bending oscillation of the intermediate shaft (7) is substantially different from the nominal frequency or an integer multiple of the nominal frequency.
11. Maschinensatz nach einem der vorhergehenden Ansprüche, bei dem die Lager (4, 5) Gleitlager (4, 5) oder Wälzlager (4, 5) sind.11. Machine set according to one of the preceding claims, wherein the bearings (4, 5) plain bearings (4, 5) or roller bearings (4, 5).
12. Maschinensatz nach einem der vorhergehenden Ansprüche, bei dem die Maschinen (l, 2) ausgelegt sind zum Austausch der Energie mit einer Leistung zwischen 25 MW und 250 MW, insbe¬ sondere von etwa 200 MW. 12. Machine set according to one of the preceding claims, in which the machines (1, 2) are designed to exchange the energy with a power between 25 MW and 250 MW, in particular approximately 200 MW.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19600419 | 1996-01-08 | ||
DE1996100419 DE19600419A1 (en) | 1996-01-08 | 1996-01-08 | Machine set |
PCT/DE1996/002491 WO1997025523A2 (en) | 1996-01-08 | 1996-12-20 | Bearing system for turbomachine assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0873467A2 true EP0873467A2 (en) | 1998-10-28 |
Family
ID=7782300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96946245A Withdrawn EP0873467A2 (en) | 1996-01-08 | 1996-12-20 | Bearing system for turbomachine assembly |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0873467A2 (en) |
JP (1) | JP2000502776A (en) |
DE (1) | DE19600419A1 (en) |
WO (1) | WO1997025523A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6708500B2 (en) | 2001-08-17 | 2004-03-23 | Alstom Technology Ltd | Turbogroup of a power generating plant |
US6826914B2 (en) | 2001-08-17 | 2004-12-07 | Alstom Technology Ltd | Turbogroup of a power generating plant |
JP3943013B2 (en) * | 2002-12-26 | 2007-07-11 | 株式会社竹中工務店 | Vertical thermal power plant |
JP5010499B2 (en) | 2008-02-28 | 2012-08-29 | 三菱重工業株式会社 | Gas turbine and gas turbine maintenance inspection method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE394589C (en) * | 1923-05-27 | 1924-04-23 | Aeg | Steam turbine system for driving electrical generators |
GB361305A (en) * | 1929-05-16 | 1931-11-16 | Siemens-Schuckertwerke Aktiengesellschaft | |
DE726983C (en) * | 1937-11-19 | 1942-10-23 | Ljungstroms Angturbin Ab | Turbo generator |
CH214978A (en) * | 1940-09-12 | 1941-05-31 | Oerlikon Maschf | Gas turbine plant. |
EP0305763B1 (en) * | 1987-08-06 | 1991-07-10 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Energy-delivering installation |
US5083040A (en) * | 1990-06-07 | 1992-01-21 | General Electric Company | Integrated turbine generator |
DE4120665A1 (en) * | 1991-06-22 | 1992-12-24 | Teves Gmbh Alfred | ELECTRICALLY DRIVEN HYDRAULIC PUMP |
US5201796A (en) * | 1991-10-15 | 1993-04-13 | United Technologies Corporation | Gas turbine engine arrangement |
-
1996
- 1996-01-08 DE DE1996100419 patent/DE19600419A1/en not_active Ceased
- 1996-12-20 EP EP96946245A patent/EP0873467A2/en not_active Withdrawn
- 1996-12-20 JP JP9524736A patent/JP2000502776A/en active Pending
- 1996-12-20 WO PCT/DE1996/002491 patent/WO1997025523A2/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9725523A3 * |
Also Published As
Publication number | Publication date |
---|---|
DE19600419A1 (en) | 1997-07-10 |
JP2000502776A (en) | 2000-03-07 |
WO1997025523A3 (en) | 1997-08-28 |
WO1997025523A2 (en) | 1997-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1677032B1 (en) | Method to replace the orbital gears and part mounting bolt | |
EP2710271B1 (en) | Bearing unit of a wind turbine | |
EP2661554B1 (en) | Wind energy plant | |
WO2013152850A1 (en) | Bearing arrangement and method for adjusting the preload of a bearing arrangement | |
EP1457673B1 (en) | Wind turbine rotor support arrangement. | |
EP2205863B2 (en) | Bearing arrangement of a rotor hub for a wind power plant, and method for mounting the same | |
DE102018124206B4 (en) | Reduction gear | |
WO2010052050A1 (en) | Axially segmented guide vane mount for a gas turbine | |
DE69929490T2 (en) | gas turbine | |
WO2010052053A1 (en) | Gas turbine with securing plate between blade base and disk | |
EP0873467A2 (en) | Bearing system for turbomachine assembly | |
DE102018129045A1 (en) | Structural assembly for a gas turbine engine | |
EP2379882B1 (en) | Turbine power plant | |
DE102012221255A1 (en) | Bearing unit for rotor of wind power machine, has stator unit fastened with bearing unit at machine carrier of wind-power plant and rotor assembly, and rotor flange and stator flange fastened with rotor hub | |
DE3214101A1 (en) | GAS TURBINE | |
DE3502578A1 (en) | AUXILIARY DRIVE FOR A GAS TURBINE ENGINE | |
WO2007031555A1 (en) | Turbine set having a mounting to compenstate for thermally induced changes in length in the rotors of a stationary turbine set | |
EP4239225A1 (en) | Planetary gear arrangement with a sun shaft mounted in/on the planet carrier, corresponding industrial gear, and method and use | |
DE102019205345A1 (en) | Rolling element device with jointly tiltable raceways | |
DE102022213569A1 (en) | ROTOR ARRANGEMENT, AIRCRAFT ENGINE AND AIRCRAFT | |
WO2020074484A1 (en) | Wind turbine having a drivetrain | |
EP4343146A1 (en) | Drive train for a wind turbine and series of drive trains | |
EP1970531A1 (en) | Rotor of a thermal fluid flow engine and fluid flow engine | |
WO2021116425A1 (en) | Generator and method for disassembling a generator of a directly driven wind turbine | |
DE102018216408A1 (en) | Exhaust gas guide device for an exhaust gas turbocharger, exhaust gas turbocharger and method for producing the exhaust gas guide device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19980707 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): CH DE ES FR GB IT LI SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20000701 |