ASSEMBLY SYSTEM FOR ASSEMBLING A FIRST WIND TURBINE COMPONENT AND A SECOND WIND TURBINE COMPONENT AND METHOD FOR ASSEMBLING A WIND TURBINE USING THE ASSEMBLY SYSTEM

Description

BACKGROUND OF THE INVENTION1. FIELD OF THE INVENTION

[0001] The present invention refers to an assembly system for assembling of a first wind turbine component of a wind turbine and second wind turbine component of the wind turbine. In addition, the invention refers to a method for assembling of a wind turbine by using the assembly system.2. DESCRIPTION OF THE RELATED ART

[0002] The assembling of a wind turbine comprises inter alia an assembling of a blade of the wind turbine to the hub of the wind turbine. This can be done after the assembling of a nacelle of the wind turbine including the hub to a tower of the wind turbine.

[0003] The increasing size of wind turbines requires longer towers that increase the horizontal movement of the components, for instance the wind turbine rotor blades or the hub of the wind turbine, when being installed.

[0004] This increase of (oscillation) relative movement of theses wind turbine components to each other during the installation process gives challenges when merging the components during the lifting and installation process.

[0005] US 2016 / 040649 A1 discloses a wind turbine with a hub having hub connection flanges) that are detachably connected to pitch bearing of a rotor blade. A blade pulley system, including at least one pulley, is detachably connected to the pitch bearing of the rotor blade. A truss system has pulley beam which includes at least one pulley and two mounting beams, where each mounting beam is detachably connected to hub connection flange so to enable to position the pulley beam above the hub connection flange.SUMMARY OF THE INVENTION

[0006] It is an objective of the invention to provide a possibility for reducing the relative movement of wind turbine components to each other during the installation process.

[0007] This objective is achieved by the invention specified in the claims.

[0008] For that, an assembly system for assembling of at least one first wind turbine component assembly section of a first wind turbine component of a wind turbine and at least one second wind turbine assembly section of a second wind turbine component of the wind turbine is provided. The assembly system comprises at least one assembly assisting element for a bringing together of the two wind turbine components. The assembly assisting element is adapted to be arranged at the first wind turbine component and at the second wind turbine component. The assembly assisting element comprises at least one guiding element for guiding of the first wind turbine component assembly section and / or for guiding of the second wind turbine assembly section. The guiding element comprises at least one elongated connection element. For instance, the elongated connection element can span between the two wind turbine components.

[0009] In addition, a method for assembling of a wind turbine with following steps is provided: a) Providing of at least one first wind turbine component of a wind turbine with at least one first wind turbine component assembly section, providing of at least one second wind turbine component of the wind turbine with at least one second wind turbine component assembly section and providing of at least one above described assembly system and b) Assembling of the two wind turbine component assembly sections with the aid of the assembly assisting element.

[0010] The assembly sections of the first and the second wind turbine components are connected (joint) together. With the aid of the elongated connection element the two wind turbine components can be connected together (e.g. a rope or wire). By that, the movements of the wind turbine components can by synchronized.

[0011] In a preferred embodiment, the elongated connection element comprises at least one rope and / or at least one wire. With the aid of the rope and / or with the aid of the wire the first wind turbine component assembly section and second wind turbine assembly section are connected together such, that the relative movement of these components towards to each other is reduced. The wire or ropes can be toque or tension controlled.

[0012] Preferably, least two elongated connection elements can be crosswise arranged such that a crossing area of the two elongated connection elements between the two wind turbine assembly sections results. The elongated connection elements comprise longitudinal dimensions. The orientations of the longitudinal dimensions are crosswise arranged. By this measure, a very stable assembling together of the two wind turbine components is possible.

[0013] With the aid of the assembly system two wind turbine components of any kind can be assembled together. In a preferred embodiment, the first wind turbine component and / or the second wind turbine component are selected from the group consisting of wind turbine tower, wind turbine blade, wind turbine nacelle, wind turbine generator and wind turbine hub. Segments or sections of these wind power components can also be regarded as wind power components. For instance, the first wind turbine component is a wind turbine blade and the second wind turbine component is a wind turbine hub. The wind turbine blade can be horizontally or vertically oriented during an installation including the assembling to the wind turbine hub.

[0014] The assembling can comprise additional fastening measures. For instance, there are assembly bolts of the first the wind turbine component assembly section and assembly bolt holes of the second wind turbine component assembly section. During the arranging the assembly bolts are arranged in the assembly bolt holes. An arranging of the assembly bolts in the assembly bolt holes can be assisted by the assembly assisting element.

[0015] In a further preferred embodiment, the first wind turbine component assembly section and / or the second wind turbine component assembly section comprise a plurality of assembly bolts and the second wind turbine component assembly section and / or the first wind turbine component assembly section comprise a plurality of assembly bolt holes in which the assembly bolts can be arranged during the assembling. The arranging of the assembly bolts in the assembly bolt holes is preferably assisted by the assembly assisting element.

[0016] For instance, the first wind turbine component is a blade and the first wind turbine assembly section is a section of a blade root (blade root assembly section) of the wind turbine blade. The second wind turbine component is a hub of the wind turbine. The second wind turbine assembly section is a wind turbine hub assembly section. Assembly bolts are located in the blade root assembly section and the assembly bolt holes are located in the wind turbine hub assembly section. Alternatively, the assembly bolts are located in the wind turbine hub assembly section and the assembly bolt holes are located in the blade root assembly section. Mixtures of the different described arrangements of the assembly bolts and the assembly bolts holes are possible, too.

[0017] The assembly assisting element can act passively. Alternatively, the assembly assisting element can actively influence the assembling of the wind turbine components. For this, the assembly assisting element comprises at least one actuator. Preferably, the actuator comprises at least one winch. With the winch additional components of the assembly assisting element like wires or ropes can be guided or rolled up.

[0018] In a preferred embodiment, the assembling assisting element comprises at least one storage device for storing the rope and / or for storing the wire. Preferably, the storage device comprises at least one stick for winding the rope and / or for winding the wire. Again, with the stick the wires or ropes can be rolled up.

[0019] The assembly assisting element, the guiding element and or the storage device can be located at any position of the wind turbine components (wind turbine blade, wind turbine hub or wind turbine tower of the wind turbine). Preferably, the assembly assisting element and / or the guiding element and / or the elongated connection element and / or the storage device can be located in an interior of the first wind turbine component, in an interior of the second wind turbine component and / or between the first wind turbine assembly section and the second wind turbine component assembly section.

[0020] After the assembling, the assembly assisting element can be removed of the assembled wind turbine. For instance, the assembly assisting element is available after the assembling of the wind turbine components at the wind turbine. In a preferred embodiment, the assembly assisting element can remain attached to the wind turbine after the assembling. So, additional steps for the removing of the assembly assisting element from the wind turbine are not necessary.BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further features and advantages of the invention are described by exemplary embodiments with reference to the drawings. The drawings are schematic. Figure 1 shows a wind turbine. Figure 2 shows details of the assembly system for assembling a wind turbine blade and a wind turbine hub. Figures 3 and 4 show manufacturing steps including an arranging of assembly bolts in assembly bolt holes. Figure 5 shows an alternative embodiment of the invention with the assembling of a wind turbine generator in a wind turbine nacelle. Figure 6 shows the method for assembling a wind turbine. DESCRIPTION OF PREFERRED EMBODIMENTS

[0022] The invention refers to an assembly system 10 for a wind turbine 1. With the invention the assembling 100 of at least one first wind turbine component assembly section 111 of a first wind turbine component 11 and a second wind turbine component section 112 of a second wind turbine component 12 is possible.

[0023] The first wind turbine component 11 is a wind turbine blade 14. The first wind turbine component assembly section 111 is a wind turbine blade assembly section. The second wind turbine component 12 is a wind turbine hub. The second wind turbine component assembly section 121 is a wind turbine blade assembly section (Alternatively, the first wind turbine 11 component is a wind turbine generator 16 and the second wind turbine component 12 is a wind turbine nacelle 15 (see figure 5)). Not shown is the possibility that one of the wind turbine components is a wind turbine tower segment 13.

[0024] The blade root assembly section 111 comprises a plurality of assembly bolts 113. The wind turbine hub assembly section 121 comprises a plurality of assembly bolt holes 114 in which the assembly bolts 113 can be arranged during the assembling 100.

[0025] The assembly system 10 comprises at least one assembly assisting element 115 for assisting a bringing together 1151 of the two wind turbine components 11 and 12. The assembly assisting element 115 is adapted to be arranged at the first wind turbine component 11 and at the second wind turbine component 12. The assembly assisting element 15 comprises at least one guiding element 1152 for guiding of the first wind turbine component assembly section 111 and / or for guiding of the second wind turbine assembly section 121.

[0026] The assembly assisting element 115 comprises at least one guiding element 1152 for guiding of the blade root assembly section 111 and for guiding of the wind turbine hub assembly section 121. The assembly assisting system 115 and the guiding element 1152 comprise 2, 3, 4 ore more ropes 1153 or wires 1154, respectively. The ropes 1153 and / or the wires 1154 can be crosswise arranged such that a crossing area 1158 of the two ropes 1153 and wires 1154 between the two wind turbine assembly sections 111 and 121 results.

[0027] In order to have a possibility for the tuning of the assembling the assembly assisting element 115 comprises actuators 1155 which are located in an interior 112 of the wind turbine hub 17. The actuators 1155 comprise winches for the winding of the ropes 1153 and the wires 1154. The actuators and / or winches are controlled by at least one not shown controller in such a way that the movement of the wind turbine blade 17 is gradually synchronized with the movement of the wind turbine hub 14 while the wind turbine blade 14 is being gradually moved by the winches towards the wind turbine hub 17.

[0028] In addition, storage devices 1156 for storing the ropes 1153 and / or for storing the wires 1154 are located in the interior 112 of the wind turbine hub 12. The storage devices comprise sticks 1157 for winding the ropes 1153 and / or for winding the wires 1154.

[0029] The wind turbine blade is assembled having the wind turbine blade lifted and placed in a horizontal position. Alternatively the wind turbine blade installation is carried out having the wind turbine blade vertically placed or in a specific chosen angle different from horizontal and vertical.

[0030] The method for assembling a wind turbine 1 comprises with following steps (see figures 3, 4 and 6: a) Providing 1150 of at least one first wind turbine component 11 (wind turbine blade 14) of a wind turbine 1 with at least one first wind turbine component assembly section (wind turbine blade assembly section) 111, providing 1150 of at least one second wind turbine component 12 (wind turbine blade 17) of the wind turbine (1) with at least one second wind turbine component assembly section (wind turbine hub assembly section) 121 and providing of at least one above described assembly system 10 and b) assembling 1151 of the two wind turbine component assembly sections 111 and 121 with the aid of the assembly assisting element 115.

[0031] Thereby, the assembly bolts 113 of the wind turbine blade assembly section (first wind turbine component assembly section 111) are arranged in the assembly bolt holes 114 of the wind turbine hub assembly section (second wind turbine component assembly section 121). This is assisted by the assembly assisting element 115 of the assembly system 10. After the arranging the assembly bolts 113 are fastened in the assembly bolt holes 114.

[0032] The assembly assisting element 115 remains attached to the wind turbine 1 after the assembling 100. Alternatively, the assembly assisting element 115 is removed from the wind turbine. For that the assembly assisting element is available through the wind turbine hub 12.

Claims

1. An assembly system (10)and a first and second wind turbine component assembly sections of first and second wind turbine components wherein the assembly system for assembling (100) of at least one first wind turbine component assembly section (111) of a first wind turbine component (11) of a wind turbine (1) and at least one second wind turbine assembly section (121) of a second wind turbine component (12) of the wind turbine (1), wherein - the assembly system (10) comprises at least one assembly assisting element (115) for assisting a bringing together (1151) of the two wind turbine components (11, 12); - the assembly assisting element (115) is adapted to be arranged at the first wind turbine component (11) and at the second wind turbine component (12); - the assembly assisting element (115) comprises at least one guiding element (1152) for guiding of the first wind turbine component assembly section (111) and / or for guiding of the second wind turbine assembly section (121); and - the guiding element (1152) comprises at least two elongated connection elements, wherein each of the at least two elongated connection elements include a longitudinal dimension extending from a first arrangement location on the first wind turbine component assembly section to a corresponding second arrangement location on the second wind turbine component assembly section, wherein a first arrangement location of a first elongated connection element is positioned diagonally opposite to a corresponding second arrangement location along an axis extending between the first arrangement location of the first elongated connection element and the second arrangement location of the first elongated connection element , and opposite to another second arrangement location of a second elongated connection element, and wherein the first elongated connection element and second elongated connection element are configured to cross one another along the axis and between the first wind turbine component assembly section and second wind turbine component assembly section while, in use, the first wind turbine component assembly section and second wind turbine component assembly section are brought together for assembling.

2. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 1, wherein the elongated connection element (1152) comprises at least one rope (1153) and at least one wire (1154).

3. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to one of the claims 1-2, wherein the first wind turbine component (11) and / or the second wind turbine component (12) are selected from the group consisting of a wind turbine tower (13), a wind turbine blade (14), a wind turbine nacelle (15), a wind turbine generator (16) and a wind turbine hub (17).

4. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to one of the claims 1-3, wherein the first wind turbine component assembly section (111) and / or the second wind turbine component assembly section (121) comprise a plurality of assembly bolts (113) and the second wind turbine component assembly section (121) and / or the first wind turbine component assembly section (111) comprise a plurality of assembly bolt holes (114) in which the assembly bolts (113) can be arranged during the assembling (100).

5. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 1, wherein the assembly assisting element (115) comprises at least one actuator (1155).

6. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 5, wherein the actuator (1155) comprises at least one winch.

7. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 2, wherein the assembling assisting element (115) comprises at least one storage device (1156) for storing the rope (1153) and / or for storing the wire (1154).

8. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 7, wherein the storage device (1156) comprises at least one stick (1157) for winding the rope (1153) and / or for winding the wire (1154).

9. The assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components according to claim 7, wherein the assembly assisting element (115) and / or the guiding element (1151) and / or the elongated connection element and / or the storage device (1156) are located each in an interior (112) of the first wind turbine component (11), in an interior (112) of the second wind turbine component (12) or between the first wind turbine assembly section (111) and the second wind turbine component assembly section (121).

10. A method for assembling a wind turbine (1) with following steps: a) Providing (1150) of at least one first wind turbine component (11) of a wind turbine (1) with at least one first wind turbine component assembly section (111), providing (1150) of at least one second wind turbine component (12) of the wind turbine (1) with at least one second wind turbine component assembly section (121) and providing of at least one assembly system (10), the assembly system and the first and second wind turbine component assembly sections of first and second wind turbine components being according to one of the claims 1 to 9 and b) Assembling (1151) of the two wind turbine component assembly sections (111, 121) with the aid of the assembly assisting element (115) c) The assembly assisting element (115) remains attached to the wind turbine (1) after the assembling (100).