(19)
(11)EP 2 172 647 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
26.06.2019 Bulletin 2019/26

(21)Application number: 08165816.3

(22)Date of filing:  03.10.2008
(51)International Patent Classification (IPC): 
F03D 1/00(2006.01)

(54)

Method and system for aligning a wind turbine component

Verfahren und System zum Ausrichten einer Windturbinenkomponente

Procédé et système d'alignement d'un composé d'éolienne


(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

(43)Date of publication of application:
07.04.2010 Bulletin 2010/14

(73)Proprietor: GE Renewable Technologies Wind B.V.
4817 PA Breda (NL)

(72)Inventors:
  • Castell Martinez, Daniel
    08005 Barcelona (ES)
  • Casanovas Bermejo, Carlos
    08005 Barcelona (ES)

(74)Representative: ZBM Patents - Zea, Barlocci & Markvardsen 
Plaza Catalunya, 1
08002 Barcelona
08002 Barcelona (ES)


(56)References cited: : 
EP-A- 1 617 075
EP-A- 1 788 281
WO-A1-03/100249
EP-A- 1 677 032
EP-A- 1 947 329
US-A1- 2004 162 181
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to a method of aligning a wind turbine component and a system for doing the same. More particularly, it relates to a method and system for aligning a wind turbine component with a wind turbine rotor hub.

    [0002] Modern wind turbines are commonly used to supply electricity into the electrical grid. Wind turbines of this kind generally comprise a rotor with a rotor hub and a plurality of blades. The rotor with the blades is set into rotation under the influence of the wind on the blades. The rotation of the rotor shaft either directly drives the generator rotor ("directly driven") or through the use of a gearbox. In the turbines using a gearbox, the rotation of a slow speed shaft (which commonly is the rotor shaft), is transformed through suitable gearing to rotation of a high speed shaft, which drives the generator.

    [0003] It is important that the gearbox and/or generator are properly aligned with the wind turbine rotor. Misalignment can lead to an increase in vibrations, cyclical loads and material stresses. Proper alignment however can be hard to achieve. Components such as the rotor, the gearbox and the generator are usually installed using cranes or other hoisting apparatus, which inherently have a certain imprecision during installation. The weight of the components is also substantial and achieving a good alignment of the various components can be a difficult, and laborious and thus expensive task.

    [0004] Furthermore, it can happen that during operation of a wind turbine, components that were properly aligned when installed become slightly misaligned. Creep is the most common cause for this kind of misalignment. If the misalignment goes unnoticed, the higher loads and vibrations may lead to a shorter life-time of key components. If the misalignment is noticed, the turbine normally is stopped and components have to be repositioned. (Lifting and) repositioning of some components may require additional tools. The interruption of the operation and the subsequent servicing can represent an important cost.

    [0005] Document EP 1 617 075 describes a method for changing a gearbox of a wind turbine using a yoke for supporting the rotor during a gearbox change.

    [0006] There thus exists a need for facilitating the alignment of wind turbine components during installation. There also exists a need for a method and system for remedying misalignment occurring after installation. Additionally, a need exists to securely monitor the alignment of the wind turbine components.

    [0007] The object of the present invention is to provide a method for aligning wind turbine components and a system for aligning wind turbine components which at least partly solve the aforementioned problems. The object is achieved by a method according to claim 1 and a system according to claim 11. Further advantageous embodiments are described in the dependent claims.

    [0008] In a first aspect, the invention provides a method of aligning a wind turbine component with a wind turbine rotor hub, comprising the step of providing the component with a support comprising at least one adjustable element, characterised in that the method further comprises adjusting said at least one element to align the wind turbine component. Providing a support comprising at least one adjustable element has two main advantages. Firstly, during installation, the wind turbine component (e.g. gearbox) does not need to be placed in its exact position. Instead, the component is positioned in an approximate location (, which will be very close to the desired location); the final alignment can then be done using the adjustable element in the support. This can save a lot of time, and money when installing the wind turbine. Secondly, if misalignment occurs during operation, no components need to be displaced and no additional tools are needed. The adjustable element of the support can be used to restore alignment.

    [0009] Optionally, the adjustable element comprised in the support has an adjustable stiffness and adjusting said element is adjusting the stiffness of the element. Wind turbine components, such as the gearbox, usually comprise some form of vibration damping. This vibration damping is commonly provided by elastic supports. According to the invention, these same vibration dampers may be used for aligning a component. For example, if the component is resting on top of the support, the position in the vertical direction is mainly determined by the weight of the component and the stiffness of the support. By adjusting the stiffness of the support, the position of the component can be adjusted. In another example, if the supports are provided on two sides of the component, the position of the component can be slightly adjusted by increasing the stiffness on one side ("pushing" the component) and decreasing the stiffness on the other side.

    [0010] Another option is that the adjustable element has an adjustable thickness and adjusting said element is adjusting the thickness of the element. Yet another option is that the position of the adjustable element can be adjusted and adjusting said element is adjusting its position. Clearly, by changing either the thickness or the position of an element that supports a component, the position of the component can be changed. By providing the adjustable elements in appropriate positions with respect to the component to be aligned and using the fact that a property (e.g. thickness, position, stiffness) of the element can be modified, a simplified method and system for alignment is achieved.

    [0011] The wind turbine components most suitable for the method according to the invention and most sensitive to misalignment are the gearbox and the generator. According to the invention, the adjustable supports may be provided on either the gearbox or the generator or both.

    [0012] Preferably, the step of providing the wind turbine component with a support comprising at least one adjustable element comprises the step of providing separate adjustable elements for at least two orthogonal directions. By providing separate elements for separate orthogonal directions, a better control over the alignment is achieved. A preferred embodiment of the invention comprises a support with adjustable elements provided in the y-direction (horizontal, orthogonal to the longitudinal direction of the rotor shaft) and z-direction (substantially vertical, orthogonal to the longitudinal direction of the rotor shaft). This way, the exact alignment of the component in the y-direction can be controlled without influencing the alignment of the component in z-direction. In another embodiment of the invention, separate adjustable elements are provided in all three orthogonal directions.

    [0013] Optionally, the alignment occurs before operation of the wind turbine, i.e. during installation of the wind turbine or during a service interval. When components have been hoisted onto the tower of the turbine and properly positioned, (mis)alignment can be measured. Then, by adjusting the supports, alignment can be improved.

    [0014] Another option is that the alignment occurs when the wind turbine is in operation. Misalignment of components may be constantly monitored and a signal of misalignment may be sent from the wind turbine control system to e.g. a distant control room. When misalignment is noticed, personnel can go to the turbine and without interrupting the operation of the turbine, the supports can be adjusted. The fact that the turbine operation does not need to be interrupted and the fact that alignment can so easily be repaired represent important cost savings.

    [0015] Misalignment can be measured in various ways. Stress variations at certain locations can be measured, vibrations can be monitored, etc. In a preferred embodiment according to the invention, misalignment is measured using proximity sensors at a coupling plate, connecting the rotor hub to the rotor shaft (slow speed shaft). The proximity sensors can measure the distance between the coupling plate and the hub itself. In complete alignment, the measured distance will be constant in rotation of the shaft. When components are misaligned, the distance between the sensor and the hub will vary during a rotation.

    [0016] In a second aspect, the present invention provides a system for aligning a wind turbine component with a wind turbine rotor hub comprising a support with at least one adjustable element supporting said wind turbine component, such that said wind turbine component can be aligned by adjusting said at least one element. The wind turbine component that is to be aligned may be e.g. a gearbox or a generator. Good alignment of the gearbox will lead to a good alignment of the rotor shaft with the rotor hub. Whereas in prior art systems, a good alignment was difficult to achieve, with the new system, the gearbox (or e.g. generator) just has to be positioned in an approximate position. Further alignment can be achieved using the at least one adjustable element provided in the support. A plurality of adjustable elements may be provided. The skilled person can determine the appropriate position and number for the adjustable elements and can also choose how the elements can be adjusted (e.g. position, stiffness, thickness, through mechanical means or hydraulic means etc.).

    [0017] In a preferred embodiment of the system according to the invention, the adjustable element comprises an elastic part and an adjustment bolt, the stiffness of the element being adjustable by the extent that said bolt pushes into said elastic part. The bolt, which can easily be adapted and manoeuvred by personnel, determines the stiffness of the elastic element. Increasing the stiffness of an adjustable element will push the component away, whereas decreasing the stiffness allows the component to sink in on the support. Through suitable placement of the adjustable elements, an efficient alignment system can be achieved. In some embodiments, the bolt carries a pushing element which pushes into the elastic part. In some embodiments, the elastic part is formed by a plurality of elastomer layers with intermediate metallic layers. In an alternative embodiment, the adjustment bolt may be replaced by a suitable hydraulic system regulating the stiffness of at least one adjustable element.

    [0018] In another preferred embodiment, the at least one adjustable element comprises a part in contact with the wind turbine component and an adjustment bolt, the position of the part in contact with the wind turbine component being adjustable by the extent that said bolt pushes on said part. In this embodiment, the position of the adjustable element is changed to align a wind turbine component. The adjustment bolt (which may also be replaced by a suitable hydraulic system) can push the part in contact with the wind turbine component away or can be retracted to allow the wind turbine component to press away said part in contact with the wind turbine component.

    [0019] Preferably, the system comprises separate adjustable elements in at least two orthogonal directions. Although improvements in alignment may be achieved by providing supports in only one direction, the achievable precision and the degree of control increases by separating adjustability in one direction from the adjustability in another orthogonal direction.

    [0020] In some embodiments, the system comprises separate adjustable supports in three orthogonal directions. By providing adjustable supports in x-direction (longitudinal direction of the rotor shaft), y-direction (substantially horizontal, perpendicular to the x-direction) and z-direction (substantially vertical, perpendicular to x- and y-direction), additional control is obtained. Apart from aligning a wind turbine component, the adjustable supports may also serve to dampen vibrations from the component and support the weight of the component.

    [0021] Preferably, proximity sensors for measuring the misalignment are provided at a coupling plate that couples the hub to the rotor shaft. The alignment system and method according to the invention are especially beneficial in wind turbines wherein the hub is supported by a frame and drives a rotor shaft provided inside the frame. In these wind turbines, the alignment of the rotor shaft with the rotor hub is not inherent (and it is thus extra important to properly align components such as the gearbox and/or generator with the rotor shaft and rotor hub); in other turbines, wherein the rotor shaft carries the hub, both are inevitably aligned. In the turbines, wherein the hub is supported by a forward extending frame, the hub is coupled to the rotor shaft using a coupling plate (or coupling element). Proximity sensors provided on the coupling element can measure the distance to the hub when rotating. If all components are well aligned, the distance the sensor will measure will be constant. If on the other hand, components are not well aligned, the distance the proximity sensor measures will constantly vary throughout a rotation.

    [0022] Particular embodiments of the present invention will be described in the following, only by way of non-limiting example, with reference to the appended drawings, in which:

    Figure 1 is a side view (and part-cross-section) of a conventional wind turbine, in which the method and system according to the present invention may be used;

    Figure 2 is a side view (and part-cross-section) of another conventional wind turbine, in which the method and system according to the present invention may be used;

    Figure 3 is a schematic top view of a first embodiment of system for aligning a wind turbine component according to the invention;

    Figure 4 is a side view of the embodiment shown in figure 3;

    Figure 5 shows a three-dimensional view of a detail of another embodiment according to the present invention;

    Figure 6 shows a side view of the embodiment shown in figure 5;

    Figures 7 and 8 show top views of a preferred embodiment of the system for measuring misalignment according to the present invention.



    [0023] Figure 1 schematically shows the (inside of the) nacelle 1 of a conventional wind turbine, in which the method and system according to the invention may be used advantageously. The nacelle 1 is positioned on tower 2. Hub 3 carries a plurality (e.g. three) of rotor blades (not indicated in figure 1). The tower also carries a frame 8, which comprises a front part 8a and a rear part 8b. The front part extends forward of the tower 2 and rotatably carries the rotor hub 3 through bearings. The rotor hub drives the rotor shaft 4 through elastic coupling plate 9. Rotor shaft 4 extends for a large part inside frame 8 and is the driving shaft of gearbox 5. Rotation of the rotor shaft is transformed, through suitable gearing within the gearbox 5, to rotation of high speed shaft 7, which in turn drives generator 6.

    [0024] Figure 2 shows the nacelle (and its inside) of another conventional wind turbine, in which the method and system according to the present invention may be used advantageously. The wind turbine is very similar to the one show in figure 1, and the same reference signs are used to denote the same components. Schematically indicated in figure 2 is a root 11 of a wind turbine blade connected to hub 3. Reference sign 10 is used to indicate a yawing system of the nacelle. Frame 8, which carries hub 3, again consists of a front part 8a and rear part 8b. A difference lies in the arrangement of the gearbox 5 with respect to the generator 6.

    [0025] The method and system according to the present invention are especially useful (but not exclusively useful) for the type of wind turbines shown in figures 1 and 2. The rotational axis of the hub in the shown wind turbines is defined by the position of the frame 8. The hub namely rotates around this frame. The rotor shaft 4 needs to be aligned with this axis of rotation, and the gearbox and generator need to be aligned with the rotor shaft. The problem of misalignment in this case is more pronounced than in alternative wind turbines in which the hub is directly mounted on the rotor shaft. In those turbines namely, there is no need to align the rotational axis of the hub with the rotor shaft, because they will be aligned by definition.

    [0026] Although in both figures 1 and 2, a gearbox was provided, in principle the invention can also be applied in wind turbines, wherein the rotor shaft directly drives the generator (so-called "direct drive" wind turbines).

    [0027] Figure 3 shows a top view of a first embodiment of the alignment system according to the present invention. In the figure, the alignment system is shown in relation to a gearbox 5 (although within the scope of the invention, the system may also be applied to other wind turbine components). Rotor shaft 4 is the drive shaft of gearbox 5 and high speed shaft 7 leads to a generator. Gearbox 5 comprises a mounting structure 5b on either side for mounting the gearbox. Reference sign 20 indicates adjustable elements.

    [0028] The adjustable elements 20 according to this embodiment comprise an elastic part 21 (schematically indicated as a spring) in contact with the gearbox mounting structure, a pushing element 22 and an adjustment bolt 23. Adjustment of the elements 20 can be achieved by simple rotation of bolts 23. The rotation causes pushing element 22 (which in this embodiment forms a base on which part 21 is mounted) to either push against part 21 or pull away from part 21, effectively changing the position of part 21. In an alternative embodiment, adjustment bolt 23 may be replaced with another suitable system, e.g. a hydraulic system.

    [0029] Adjustable elements 20 are provided within support structure 15 which is fixed to the frame upon which the gearbox is mounted. In the embodiment according to figures 3 and 4, the adjustable elements are provided in the x-direction, y-direction and the z-direction (although not visible in figure 3). The x-direction in this case is defined as the longitudinal direction of the rotor shaft. The x-direction should coincide with the rotational axis of the hub if it is correctly aligned. The y-direction is perpendicular to the x-direction and lies in a horizontal plane. As can be clearly seen, the supports in x-direction and y-direction are clearly separated. Now, for example, by using the elements provided in y-direction, e.g. pushing of the element(s) on one side of the gearbox and adjusting the element(s) on the other side to enable this pushing from the opposite side, some misalignment may be corrected. Apart from this function, the supports may also perform the function of damping the vibrations of the gearbox.

    [0030] Figure 4 shows a different view of the same embodiment. The gearbox is shown to be placed on frame 8. Adjustable elements 20 in the x-direction and in the z-direction (the z-direction being perpendicular to both the previously defined x-direction and y-direction) can be seen. As can be seen in figure 4, the position of the gearbox in z-direction may be influenced using adjustable elements 20 provided in z-direction. These elements are provided both on top of and under the side structure 5b of the gearbox. In a similar way as was described for the y-direction, the alignment in the z-direction can be adjusted.

    [0031] In the embodiment according to the invention shown in figures 3 and 4, only one element 20 was provided in the x-direction. As such, said element in the x-direction cannot be used to align the gearbox with the rotor hub. Its main purpose in the shown embodiment was to support the weight of the gearbox. In an alternative embodiment, two adjustable elements in the x-direction may be provided behind the gearbox. One such adjustable element may be provided more on the left side of the gearbox and another such element may be provided more on the right side of the gearbox. With this configuration, a rotation of the gearbox (around the z-axis) may be achieved through adjustment of the elements in x-direction. This configuration with at least two elements in x-direction may be combined with the embodiment shown in figures 3 and 4 or independently (without other adjustable elements) or in combination with e.g. adjustable elements in z-direction.

    [0032] Figures 5 and 6 show a three-dimensional detail and a side view of an alternative embodiment of the present invention. Gearbox 5 is shown to be mounted on frame 8. Fixed to frame 8 are support structures 15 for supporting adjustable elements 20. Adjustment bolt 23 can be pushed in or removed from elastic element 21, thereby adjusting the stiffness of the elastic part 21. In figure 5, the elastic part in this embodiment is formed by a number of elastomer layers, with a number of metallic layers between them. Within the scope of the present invention, other elastic parts may also be used. One example is an elastomer, with only metallic layers on either end, without intermediate metallic layers. Another example is an elastomer, (with or without intermediate metallic layers) in which the stiffness can be adjusted through a suitable hydraulic system pushing on the elastomer and thereby changing its stiffness.

    [0033] Figures 7 and 8 indicate the system for monitoring (mis)alignment of the rotor shaft and gearbox. In figure 7, the longitudinal direction of the rotor shaft x is perfectly aligned with the rotational axis of the hub xH. A proximity sensor 30 is provided on coupling plate 9. The sensor continuously measures its distance to the hub. In the situation wherein the gearbox and rotor shaft are aligned with the hub, the sensor 30 will continuously measure the same distance to the hub, irrespective of whether the sensor is positioned at the position indicated with a continuous line or the position indicated with a dotted line.

    [0034] In figure 8, the rotor shaft and gearbox are not perfectly aligned with the rotor hub. The x-direction does not coincide with the xH-direction. Proximity sensor 30 will measure a different distance e.g. when it is in the position shown in continuous line than when it is in the position indicated with a dotted line. In fact, the signal from a sensor will display a sinus function with the same frequency as the hub rotation. During operation, and without interrupting the operation, the adjustable elements may now be used to align the gearbox and rotor shaft. Improvement can immediately be measured with the proximity sensor and alignment is achieved when the sinus function has a zero amplitude.

    [0035] Although in figures 7 and 8, a preferred embodiment of the system for monitoring misalignment was shown, within the scope of the claims other systems known to the person skilled in the art may be used. Misalignment may e.g. be detected through vibrations or an increase in material stresses.


    Claims

    1. A method of aligning a wind turbine component (5, 6) with a wind turbine rotor hub (3), comprising the step of providing the component (5, 6) with a support (15) comprising at least one vibration damper (20), characterised in that the method further comprises adjusting said at least one vibration damper (20) to align the wind turbine component (5, 6) with the wind turbine rotor hub.
     
    2. A method according to claim 1, wherein said vibration damper (20) has an adjustable stiffness and adjusting said vibration damper (20) is adjusting the stiffness of the vibration damper.
     
    3. A method according to claim 1 or 2, wherein said vibration damper (20) has an adjustable thickness and adjusting said vibration damper (20) is adjusting the thickness of the element.
     
    4. A method according to claim 1, 2 or 3, wherein the position of the vibration damper (20) can be adjusted and adjusting said vibration damper (20) is adjusting its position.
     
    5. A method according to any of claims 1 - 4, in which the wind turbine component is a gearbox (5).
     
    6. A method according to any of claims 1 - 4, in which the wind turbine component is a generator (6).
     
    7. A method according to any previous claim, in which the step of providing the wind turbine component (5, 6) with a support (15) comprising at least one vibration damper (20) comprises the step of providing separate vibration dampers (20) for at least two orthogonal directions.
     
    8. A method of aligning a wind turbine component (5, 6) according to any previous claim, characterised in that the alignment occurs before the wind turbine is in operation.
     
    9. A method of aligning a wind turbine component (5, 6) according to any of claims 1-8, characterised in that the alignment occurs when the wind turbine is in operation.
     
    10. A method of aligning a wind turbine component (5, 6) according to any previous claim, characterised in that misalignment is measured with proximity sensors (30) at a coupling plate (9) that couples the hub (3) to the rotor shaft (4).
     
    11. A system for aligning a wind turbine component (5, 6) with a wind turbine rotor hub (3) comprising a support (15) with at least one vibration damper (20) supporting said wind turbine component (5, 6), characterised in that said wind turbine component (5, 6) is aligned by adjusting said at least one vibration damper (20).
     
    12. A system according to claim 11, characterised in that the at least one vibration damper (20) comprises an elastic part (21) and an adjustment bolt (23), the stiffness of the vibration damper (20) being adjustable by the extent that said bolt (23) pushes into said elastic part (21).
     
    13. A system according to claim 11, characterised in that said at least one vibration damper (20) comprises a part (21) in contact with the wind turbine component (5, 6) and an adjustment bolt (23), the position of the part (21) in contact with the wind turbine component (5, 6) being adjustable by the extent that said bolt (23) pushes on said part.
     
    14. A system according to any of claims 11 - 13, characterised in that it comprises separate vibration dampers (20) in at least two orthogonal directions.
     
    15. A system according to any of claims 11 - 14, characterised in that proximity sensors (30) for measuring the misalignment are provided at a coupling plate (9) that couples the hub (3) to the rotor shaft (4).
     


    Ansprüche

    1. Ein Verfahren zum Ausrichten von einer Windturbinenkomponente (5, 6) auf eine Windturbinenrotornabe (3) umfassend den Schritt, in dem die Komponente (5, 6) mit einem Träger (15) umfassend mindestens einen Vibrationsdämpfer (20) versehen wird, dadurch gekennzeichnet, dass das Verfahren weiterhin das Einstellen des mindestens einen Vibrationsdämpfers (20) umfasst, um die Windturbinenkomponente (5, 6) auf die Windturbinenrotornabe auszurichten.
     
    2. Ein Verfahren nach Anspruch 1, wobei der Vibrationsdämpfer (20) eine einstellbare Steifigheit hat und das Einstellen des Vibrationsdämpfers (20) das Einstellen der Steifigheit des Vibrationsdämpfers ist.
     
    3. Ein Verfahren nach Anspruch 1 oder 2, wobei der Vibrationsdämpfer (20) eine einstellbare Dicke hat und das Einstellen des Vibrationsdämpfers (20) das Einstellen der Dicke des Elements ist.
     
    4. Ein Verfahren nach Anspruch 1, 2 oder 3, wobei die Position des Vibrationsdämpfers (20) eingestellt werden kann und das Einstellen des Vibrationsdämpfers (20) das Einstellen seiner Position ist.
     
    5. Ein Verfahren nach einem der Ansprüche 1 - 4, in dem die Windturbinenkomponente ein Getriebegehäuse (5) ist.
     
    6. Ein Verfahren nach einem der Ansprüche 1 - 4, in dem die Windturbinenkomponente ein Generator (6) ist.
     
    7. Ein Verfahren nach einem der vorhergehenden Ansprüche, in dem der Schritt, in dem die Windturbinenkomponente (5, 6) mit einem Träger (15) umfassend mindestens einen Vibrationsdämpfer (20) versehen wird den Schritt umfasst, in dem separate Vibrationsdämpfer (20) für mindestens zwei orthogonale Richtungen bereitgestellt werden.
     
    8. Ein Verfahren zur Ausrichtung von einer Windturbinenkomponente (5, 6) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ausrichtung stattfindet, bevor die Windturbine im Betrieb ist.
     
    9. Ein Verfahren zur Ausrichtung von einer Windturbinenkomponente (5, 6) nach einem der Ansprüche 1-8, dadurch gekennzeichnet, dass die Ausrichtung stattfindet, wenn die Windturbine im Betrieb ist.
     
    10. Ein Verfahren zur Ausrichtung von einer Windturbinenkomponente (5, 6) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Versatz mittels Näherungsschalter (30) an einer die Nabe (3) mit der Rotorwelle (4) verbindenden Kupplungsplatte (9) gemessen wird.
     
    11. Ein System zur Ausrichtung von einer Windturbinenkomponente (5, 6) auf eine Windturbinenrotornabe (3) umfassend einen Träger (15) mit mindestens einen Vibrationsdämpfer (20), der die Windturbinenkomponente (5, 6) trägt, dadurch gekennzeichnet, dass die Windturbinenkomponente (5, 6) ausgerichtet wird, indem der mindestens eine Vibrationsdämpfer (20) eingestellt wird.
     
    12. Ein System nach Anspruch 11, dadurch gekennzeichnet, dass der mindestens eine Vibrationsdämpfer (20) einen elastischen Teil (21) und einen Einstellungsbolzen (23) umfasst, wobei die Steifigheit des Vibrationsdämpfers (20) in dem Maße eingestellt werden kann, in dem der Bolzen (23) in den elastischen Teil (21) drückt.
     
    13. Ein System nach Anspruch 11, dadurch gekennzeichnet, dass der mindestens eine Vibrationsdämpfer (20) einen Teil (21) in Kontakt mit der Windturbinenkomponente (5, 6) und einen Einstellungsbolzen (23) umfasst, wobei die Position des in Kontakt mit der Windturbinenkomponente (5, 6) stehenden Teils (21) in dem Maße eingestellt werden kann, in dem der Bolzen (23) auf den Teil drückt.
     
    14. Ein System nach einem der Ansprüche 11 - 13, dadurch gekennzeichnet, dass es separate Vibrationsdämpfer (20) in mindestens zwei orthogonalen Richtungen umfasst.
     
    15. Ein System nach einem der Ansprüche 11 - 14, dadurch gekennzeichnet, dass Näherungsschalter (30) zur Messung des Versatzes an einer die Nabe (3) mit der Rotorwelle (4) verbindenden Kupplungsplatte (9) bereitgestellt sind.
     


    Revendications

    1. Un procédé d'alignement d'un composant d'éolienne (5, 6) avec un moyeu de rotor d'éolienne (3), comprenant l'étape de munir le composant (5, 6) d'un support (15) comprenant au moins un amortisseur de vibrations (20), caractérisé en ce que le procédé comprend en outre ajuster ledit au moins un amortisseur de vibrations (20) pour aligner le composant d'éolienne (5, 6) avec le moyeu de rotor d'éolienne.
     
    2. Un procédé selon la revendication 1, dans lequel ledit amortisseur de vibrations (20) a une raideur ajustable et ajuster ledit amortisseur de vibrations (20) est ajuster la raideur de l'amortisseur de vibrations.
     
    3. Un procédé selon la revendication 1 ou 2, dans lequel ledit amortisseur de vibrations (20) a une épaisseur ajustable et ajuster ledit amortisseur de vibrations (20) est ajuster l'épaisseur de l'élément.
     
    4. Un procédé selon la revendication 1, 2 ou 3, dans lequel la position de l'amortisseur de vibrations (20) peut être ajustée et ajuster ledit amortisseur de vibrations (20) est ajuster sa position.
     
    5. Un procédé selon l'une quelconque des revendications 1 - 4, dans lequel le composant d'éolienne est une boîte de vitesses (5).
     
    6. Un procédé selon l'une quelconque des revendications 1 - 4, dans lequel le composant d'éolienne est un générateur (6).
     
    7. Un procédé selon l'une quelconque des revendications précédentes, dans lequel l'étape de munir le composant d'éolienne (5, 6) d'un support (15) comprenant au moins un amortisseur de vibrations (20) comprend l'étape de fournir des amortisseurs de vibrations à part (20) pour au moins deux directions orthogonales.
     
    8. Un procédé d'alignement d'un composant d'éolienne (5, 6) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'alignement se produit avant le fonctionnement de l'éolienne.
     
    9. Un procédé d'alignement d'un composant d'éolienne (5, 6) selon l'une quelconque des revendications 1-8, caractérisé en ce que l'alignement se produit lors du fonctionnement de l'éolienne.
     
    10. Un procédé d'alignement d'un composant d'éolienne (5, 6) selon l'une quelconque des revendications précédentes, caractérisé en ce que les défauts d'alignement sont mesurés moyennant des capteurs de proximité (30) situés sur une plaque d'accouplement (9) qui couple le moyeu (3) à l'arbre de rotor (4).
     
    11. Un système d'alignement d'un composant d'éolienne (5, 6) avec un moyeu de rotor d'éolienne (3) comprenant un support (15) avec au moins un amortisseur de vibrations (20) supportant ledit composant d'éolienne (5, 6), caractérisé en ce que ledit composant d'éolienne (5, 6) est aligné en ajustant ledit au moins un amortisseur de vibrations (20).
     
    12. Un système selon la revendication 11, caractérisé en ce que l'au moins un amortisseur de vibrations (20) comprend une partie élastique (21) et un boulon d'ajustement (23), la raideur de l'amortisseur de vibrations (20) étant ajustable dans la mesure où ledit boulon (23) pousse dans ladite partie élastique (21).
     
    13. Un système selon la revendication 11, caractérisé en ce que ledit au moins un amortisseur de vibrations (20) comprend une partie (21) en contact avec le composant d'éolienne (5, 6) et un boulon d'ajustement (23), la position de la partie (21) en contact avec le composant d'éolienne (5, 6) étant ajustable dans la mesure où ledit boulon (23) pousse sur ladite partie.
     
    14. Un système selon l'une quelconque des revendications 11 - 13, caractérisé en ce qu'il comprend des amortisseurs de vibrations (20) à part dans au moins deux directions orthogonales.
     
    15. Un système selon l'une quelconque des revendications 11 - 14, caractérisé en ce que des capteurs de proximité (30) pour mesurer des défauts d'alignement sont fournis sur une plaque d'accouplement (9) qui couple le moyeu (3) à l'arbre de rotor (4).
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description