NL2003465C2 - Method for installing a windmill - Google Patents

Method for installing a windmill Download PDF

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Publication number
NL2003465C2
NL2003465C2 NL2003465A NL2003465A NL2003465C2 NL 2003465 C2 NL2003465 C2 NL 2003465C2 NL 2003465 A NL2003465 A NL 2003465A NL 2003465 A NL2003465 A NL 2003465A NL 2003465 C2 NL2003465 C2 NL 2003465C2
Authority
NL
Netherlands
Prior art keywords
vessel
elongated
windmill
foot
handling
Prior art date
Application number
NL2003465A
Other languages
Dutch (nl)
Inventor
David Christoforus Bruin
Henry Charles Pol
Kuno Johannes Alexander Berg
Original Assignee
Ihc Holland Ie Bv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ihc Holland Ie Bv filed Critical Ihc Holland Ie Bv
Priority to NL2003465 priority Critical
Priority to NL2003465A priority patent/NL2003465C2/en
Application granted granted Critical
Publication of NL2003465C2 publication Critical patent/NL2003465C2/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/003Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/02Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/02Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
    • B63B39/03Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/727Offshore wind turbines

Description

P6027721NL
Method for installing a windmill. Background of the invention
The invention relates to a method for installing standing elongated structures such as a windmill. The method also applies to loading a windmill.
The invention further relates to a method for transporting standing elongated structures such as windmills.
The invention further relates to a vessel for transporting an elongated structure such as a windmill in erect position.
From WO 03/066427 A1 a vessel is known for installing upright structures. The vessel has gripping and lifting means for picking up windmills at the coast. Picking up wind turbines at the coast results in stringent preconditions for the vessel with regard to draft and / or workable depth. In order to grasp the seabed, the vessel is lowered, after which spud poles reach to the bottom. This results in a long installation time for a windmill.
WO03 / 093584 A1 shows a vessel for handling a windmill relative to a stationary support. When handling the windmill, the vessel is supported by legs on the seabed. The vessel is moved along the legs to position the windmill in height. The use of legs is disadvantageous in connection with the installation time and feasibility in deep water.
From WO2004 / 038108 a foundation is known for mounting a windmill on it. The foundation has a base with an internal guide surface which cooperates with guide means connected to the end of the windmill for vertically aligning the windmill. Subsequently, thin mortar is applied between the end of the windmill and the base for fixing the windmill and the base. Hardening the mortar is detrimental to the installation time, moreover, after the hardening of the mortar, the guide means can be removed from the mill.
2 WO2007 / 091042 A1 shows a device and method for installing a windmill. The windmill is placed on a support frame and is placed in combination with it on a prepared foundation. The support frame has a number of hydraulically controlled feet that gradually transfer the weight of the windmill from the 5 cranes to the foundation. A disadvantage of this known device and method is the relatively long time that the ship is connected to the foundation. This is unfavorable in view of the risk of damage and, moreover, detrimental to the workability under rough sea conditions.
Summary of the invention
An object of the invention is to improve the installation time of a windmill.
It is a further object of the invention to improve the workability of a vessel for installing wind turbines in the sea, in particular the workability under rough sea conditions.
To this end, the invention provides a vessel for transporting an elongated structure such as a windmill in erect position, the vessel comprising a device for adjusting the stability and mass inertia of the vessel for influencing the vessel's own winding time. Transporting a windmill in the erected position is favorable for the winding time. With a longer time, a gondola from the windmill is exposed to more low acceleration. Acceleration of the gondola, specifically of a gondola of an assembled windmill, during transport and installation is generally a bottleneck. By using the device for adjusting the stability and the mass inertia of the vessel, it is possible to coordinate the acceleration of gondola with the specified allowable acceleration. By applying this device it also becomes possible to transport several windmills in erected position. After unloading one windmill, the stability and mass inertia of the vessel is then adjusted, after which the winding time is again increased to the desired level. By applying the device for adjusting the stability and mass inertia of the vessel, it is possible to adjust the stability and mass inertia to the current situation at sea. The wobble time is then preferably set as different as possible from the wave period.
3
In an embodiment of the vessel according to the invention, the vessel is provided with a seafast that extends along the elongated structure for connecting the elongated structure and the vessel at height. By the possibility of connecting at height, accelerations, for example as a result of the windmill's own movement, of the gondola are further reduced.
In an embodiment of the vessel according to the invention the seafast comprises at least a part of the device for adjusting the stability and mass inertia of the vessel. A favorable built-in volume is achieved by at least partially integrating the device for adjusting the stability and mass inertia of the vessel. Furthermore, it becomes possible to bring the device up to the roll axis of the ship. In one embodiment the seafast comprises a ballast tank for adjusting the stability of the vessel to inertia. The ballast tank preferably extends at the end of the seafast remote from the vessel, which is favorable for the effect of the ballast tank. The ballast tank preferably extends parallel to the longitudinal axis of the vessel, which is favorable for the adjustability of the stability and the inertia of the vessel, specifically with regard to swinging about the rolling axis.
20
In an embodiment of the vessel according to the invention, the vessel is provided with a handling device for the operable connection of the elongated structure and the vessel. The handling device makes it possible to compensate for movements of the free-floating vessel during the installation of a windmill.
25
In an embodiment of the vessel according to the invention, the handling device comprises an xy table for compensating vessel movements during placing the elongated structure on a foot for directing the elongated structure to the foot. By using the xy table, movements of the free-floating vessel can be compensated all the better.
In an embodiment of the vessel according to the invention, at least one table of the xy table is movable along a curved path for simultaneously adjusting the windmill in height when the at least one table is adjusted. By applying the curved path, movements of the free-floating vessel can be compensated all the better.
To this end, the invention further provides a method for vertically transporting an elongated construction, such as a windmill, by means of a vessel according to the invention, the method comprising one or more of the following steps; - adjusting the stability and mass inertia of the vessel to influence the vessel's own swing time, - measuring the acceleration of the elongated structure, in an embodiment of an end of the elongated structure remote from the vessel.
By measuring the accelerations, it is possible to control and control the acceleration of the windmill, specifically the gondola, all the better. It is conceivable that an acceleration sensor is placed on the gondola to measure as directly as possible. It is furthermore conceivable that the speed and position of the gondola is also measured.
To this end, the invention further provides a method for unloading a free-floating vessel according to the invention, the method comprising the step of - adjusting the stability and mass inertia of the vessel with the elongated construction, for influencing its own swinging tide d of the vessel.
This step makes it possible to transport and install several wind turbines from one vessel. After the unloading of one windmill, the pendulum time is brought back to the desired level by means of the device for adjusting the stability and mass inertia of the vessel. This method can also apply to loading a windmill.
In an embodiment of the method for unloading, the method comprises the steps, - placing the elongated structure outboard by means of a handling device fixedly connected to the vessel, - compensating vessel movements during placing the elongated construction on a foot by means of the handling device for directing the elongated structure towards the foot, - damping the movement of the elongated structure at the foot,
By compensating for vessel movements during the placement of the elongated structure, it is possible to accurately hold the windmill above the foot before lowering the windmill onto the foot. This shortens the contact moment 10 between the vessel via the windmill with the base. This reduces the chance of collision with the foot with the risk of all kinds of damage. By damping the movement of the windmill at the foot, it becomes possible to lower the windmill at a greater speed, thereby shortening the contact moment even more. Moreover, damping is favorable with regard to the accelerations of the gondola.
15
In an embodiment of the method for unloading, the method comprises one or more of the steps of: - driving or sliding the elongated construction in the vertical position over the deck, - engaging the elongated construction by means of the foot for positioning the elongated structure about its longitudinal axis, - after releasing the elongated structure by the vessel, lowering the elongated structure from a first position to a second position for mutually engaging mounting flanges of the elongated structure and the foot, - measuring the acceleration of the elongated structure, in an embodiment of an end of the elongated structure remote from the vessel.
By subsequently lowering the elongated structure from a first position to a second position for mutually engaging mounting flanges of the elongated structure and the foot, it is possible with a greater wind speed drop speed, which shortens the contact moment even more. The distance between the first and second position is favorable because it offers freedom to dampen the wind speed of the windmill.
6
To this end, the invention further provides an assembly of a vessel according to a preceding claim, and one or more elongated structures held on the vessel in a vertical position.
5
To this end, the invention further provides a mounting device for use in a method according to the invention, for placing the elongated structure on a base, the mounting device comprising; - a positioning device for positioning the elongated construction relative to the foot, - a damping device for damping the movement of the elongated construction relative to the foot, - a locking device for locking the elongated construction with respect to the foot foot.
15
It will be clear that the various aspects mentioned in this patent application can be combined and can each qualify separately for a split-off patent application.
Brief description of the figures
In the accompanying figures, among other things, various embodiments of a vessel according to the invention and parts thereof are shown in which is shown in:
FIG. 1 is a side view of a vessel loaded with windmills; 25 FIG. 2 is a rear view of the vessel of FIG. 1; Fig. 3 is a top view of the vessel of Fig. 1; FIG. 4a-4d successive steps in the unloading of a windmill; Fig. 5 is a top view of a handling device for unloading and loading the windmills; Fig. 6 shows a rear view of a clamping device for connecting two windmills to a marine fixed one; FIG. 7a-7th consecutive steps of a mounting device for installing a windmill; 7 Fig. 8 is a schematic representation of a device for compensating for wave movements; Fig. 9a is a front view of a windmill and a part of the handling device; Fig. 9b is a side view of a windmill and a part of the handling device.
5
Description of embodiments
FIG. 1 shows a side view of a vessel 1 loaded with windmills 3. The vessel 1 is loaded with a plurality of windmills 3, which is favorable for the installation time of a windmill 3. The vessel 1 with the windmills 3 is also referred to as assembly 2 of the vessel 1 and the windmills 3. The windmills 3 are fully assembled, which is favorable for the installation time offshore. When windmills are fully assembled, strict requirements are imposed on the transport, specifically with regard to the maximum accelerations that the windmill 3 may undergo, more specifically the maximum accelerations that the gondola 12 may undergo. The windmills 3 are connected to the vessel 1 for transport in the erected position. The erected position of the windmills 3 is unfavorable with regard to the static stability of the assembly 2. However, this in itself unfavorable stability of the assembly 2 leads to a large winding time of the ship with regard to winding (roll) and pitching (pitch) ), i.e. rotate back and forth along the longitudinal axis and rotate back and forth along the width axis. The winding time with regard to swinging (roll) is particularly important in this context. A large winding time of the vessel 1 with the windmills 3 is favorable for the accelerations that the gondola 12 of the windmill 3 undergoes. Thus, by deteriorating the static stability of the vessel 1, the strict requirements regarding the maximum acceleration that the gondola 12 may undergo are met. The vessel 1 is further provided with a device 5 for adjusting the stability and mass inertia of the vessel 1. This makes it possible to further deteriorate the static stability of the assembly 2, so that the winding time is all the greater. The device 5 for adjusting the stability and mass inertia of the vessel 1 here comprises a seafast 27. Here the seafast 27 consists of a truss and extends transversely to the vessel 1 and along the windmills 3. The seafast 27 is provided at its end remote from the vessel 1 with a ballast tank 25. In this way the stability and the mass inertia 8 of the vessel 1 can be effectively influenced by filling or emptying the ballast tank 25. It is conceivable that the device 5 for adjusting the mass inertia of the vessel 1 has alternative or further ballast (not shown) for adjusting the mass inertia of the vessel 1, such as, for example, a weight, specifically a concrete weight, which is adjustably connected to the seafast 27. It is important that the device 5 displaces a mass relative to the vessel 1 for increasing the own pendulum period of the vessel 1. Preferably, the mass is displaced vertically relative to the vessel 1. In other words, the pendulum period of the vessel vessel is increased by reducing the stability in combination with increasing the rotational inertia. Here, the seafast 27 is provided at and along the ballast tank 25 with a toothed track 26 (toothed rack) on which the drive 77 of Fig. 6 engages for moving the windmill 3 over the deck of the vessel 1.
The windmill 3 here comprises an elongated upright 14 with an outer jacket 15. The upright 14 extends along the longitudinal axis 16. At the top, the upright 14 is provided with a gondola 12. The rotor 13 with the vanes 11 is with the gondola 12 assembled. Transport, but also placement or loading in a harbor, of an assembled windmill 3 imposes strict preconditions with regard to permissible accelerations of, in particular, the gondola 12. These preconditions must be taken into account all the better when a windmill 3 is transported upright .
The vessel 1 here comprises a handling device 4 for handling windmills 3. The handling device 4 is suitable for loading and unloading windmills 3 in an erected position. The handling device 4 extends along its longitudinal axis 24 transversely to the vessel 1. The handling device 4 here comprises a fixed part 21 with which the handling device 4 is connected to the vessel 1, and a rotatable part 17 rotatable about the longitudinal axis 24 is connected to the fixed part 21 by means of the bearings 82 and 83. Both the fixed part 21 and the rotatable part 17 are here cylindrical, this makes it possible to rotate the adjustable part 17 about the longitudinal axis 24. The adjustable part 17 rotates about the fixed part 21, specifically over the outer casing 22 of the fixed part 21. The handling device 5 comprises a transverse structure 18 for outboard handling of the handling device 5. The transverse structure 18 is adjustable for height by means of a rail construction 84 9 with the outer jacket 23 of the adjustable part 17 of the handling device 4. The handling device 4 comprises an xy table 19 for positioning the windmill 3 relative to the vessel 1 for compensating for movements of the vessel 1 at sea.
FIG. 2 shows a rear view of the vessel 1. The windmills 3 here are slidably connected to the seafast 27 (not shown here) by means of a clamping device 7. The windmill 3 is mobile or slidably connected to the vessel 1 by means of a carriage 10 which is in a rail system 9 runs or slides. The windmills 3 are drivably connected to the vessel 1. The windmill 3 is drivably connected to the vessel 1 by means of a number of drive devices 77. The drive device 77 is here a per se known combination of gear rack and drive wheel. The windmill 3 is driven both at the deck of the vessel 1 and at the clamping device 7, which results in an even drive of the windmill 3.
FIG. 3 shows a top view of the vessel 1. The windmills 3 are arranged in two rows on either side of the seafast 27 so that all windmills 3 can be connected to one seafast 27 by means of clamping devices 7.
FIG. 4a-4d show successive steps in unloading a windmill 3 from the vessel 1 by means of the handling device 4. First of all, a windmill 3 is moved towards the handling device 4 by means of the drive devices 77. The handling device 4 then rotates towards the windmill 3 and clamps the windmill 3, rotates the windmill 3 relative to the handling device 4 by means of the turntable 86 of Fig. 5, and then turns the windmill 3 outboard by rotating the transverse structure 18 so as to windmill on a foot (not shown here), such as the pole 39 from figure 7a-e.
FIG. 5 shows a top view of a handling device 4 for unloading and loading the wind turbines 3. The transverse structure 18 has two sleepers 78, 79 with which an xy table is connected to the rotatable part 17 of the handling device 4. The xy table 19 is known per se and consists of a first table 28 and a second table 29 which are mutually perpendicularly movable. The xy table 19 makes it possible to translate the windmill 3 into the horizontal plane. In operation, the windmill 3 is connected to the upper table 29 of the xy table 19 by means of a support beam 76. The support beam 76 is fixedly connected at its end to the upper table 29 and with its opposite end cardanically coupled to the windmill 3. The windmill 3 per se known cardanic coupling 20 preferably engages directly above the center of gravity of the windmill 3. Through the cardanic coupling 20, the windmill 3 hangs freely rotatable about the axes 30 and 31.
FIG. 6 shows a rear view of a clamping device 7 for connecting two windmills to the seafast 27 of FIGS. 1 and 3. The clamping device 7 connects the windmill 3 on a mobile or slidable basis to the seafast 27. The clamping device 7 comprises a clamp at its end 32 with which the clamping device 7 engages the post 14 of the windmill 3, specifically the outer jacket 15 of the post 14. At its opposite end, the clamping device 7 engages the seafast 27. The clamping device 7 engages the seafast 27 by means of a drive 77 for sliding or driving the windmill 3 relative to the vessel 1. When the clamping device 7 engages with the seafast 27, the seafast 27 is partly received in the recess 34, 35. On the right in Fig. 6 the clamp 33 is shown in a position from which the clamp halves pivot to the position shown on the left in fig. 6. In this position the clamping device 7 with the drive 77 can pass a windmill and / or wicks of the windmill. This is advantageous because in this way only one driven clamping device 7 per row of windmills is required as shown in Fig. 3. The other windmills 3 that do not yet have to be driven are connected to the sea-fixed with a fixed clamp.
FIG. 7a-7e show successive steps of a mounting device 6 for installing a windmill 3. The mounting device 6 comprises two parts, a stationary part 37 and a support part 38 to which the windmill is mounted. The stationary part 37 is connected to a pole 39 which extends along its central axis 41 and has an outer sheath 40. The pole 39 is fixedly connected to the seabed or another foundation in a manner not shown. 39 also refers to foot 39.
It is clear that this is a fixed point at which the windmill 3 is placed to function there.
The support part 38 is provided with a recess 43 for positioning the support part 38 relative to the stationary part 37. The support part 38 comprises a stop 80 circulating here for engaging the stationary part 37 in a first mutual position and a flange 61 for engaging the stationary part 37 in a second mutual position. The support part 38 comprises a number of hooks 55 for locking the support part 38 with the stationary part 37 in the first mutual position.
The stationary part 37 comprises a cam 42 for positioning the support part 38 relative to the stationary part 37. The stationary part 37 comprises a damping device 60 for damping the engagement of the support part 38 on the stationary part 37. The stationary part 37 comprises a number of hydraulic cylinders 58 which, with their cylinder rod 59, in this case through the damping device 60 specifically the front side 81 of the damping device 60, engage on the support part 38 for lowering the support part 38 from the first mutual position to the second mutual position. The stationary part 37 comprises a number of further hooks 56 for locking the support part 38 with the stationary part 37 in the second mutual position.
The operation of the mounting device 6 is as follows. The support part 38 and the stationary part are mutually aligned by means of the handling device 4. During alignment, the handling device 4 compensates for ship movements of the vessel 1. The central axis 16 of the windmill 3 is now in line with the central axis 41 of the pole 39. The handling device 4 then lowers the windmill 3 so that the cam 42 engages in the recess 43. The cam 42 and the recess 43 have a corresponding shape for determining the mutual angular position of the windmill 3 relative to the pole 39 about the central axis 41. The cam 42 and the recess 43 are tapered so that the mutual positioning of the support member 38 and the stationary member 37 in the horizontal plane. The windmill 3 is now lowered, with the support part 38 falling onto the stationary part 37 at a certain speed. The support part 38 first of all engages the hydraulic cylinders 58 by means of the stop 80, here via damping device 60. The support part 38 comes to a halt in the first mutual position. In the first mutual position the hooks 55 are behind the flange 62 of stationary part 37 for temporarily locking the windmill 3 and the pole 39. The vessel 1 with the handling device 4 then detaches itself from the windmill 3 as soon as possible. The cylinder rods 59 now lower the support part 38 from the first mutual position in Fig. 7d to the second mutual position in Fig. 7e. In the second mutual position, the flanges 61, 62 engage with each other to bolt them together. The further hooks 56 now fall behind the flange 61 of the support part 38 for temporarily locking the windmill 3 and the pole 39 before the flanges 61, 62 are bolted together.
FIG. 8 shows a schematic representation of a device 8 known per se for compensating for wave movements. This device 8 here connects the fixed part 21 of the handling device 4 with the height-adjustable transverse structure 18 of the handling device 4. The roller 67 is thereby connected to the vessel 1. The cable connection 71 is connected to the transverse structure 18. The height of the transverse structure 18 can be adjusted by means of the steering cylinder 70 and via the cable 68, pulley 66 and pulley system 69. The height position of the windmill 3 during installation can hereby be adjusted and it becomes possible to compensate for movements of the vessel 1, in particular dips (up and down) and stomping of the vessel 1.
FIG. 9a is a front view of a windmill 3 and a part of the handling device 4. In this embodiment of the handling device 4, the first table 28 has a radius of curvature 72, wherein in a specific embodiment the radius of curvature 72 is the rolling axis 73 of the vessel 1. cuts. When the first table 28 has a radius of curvature 72 when positioning along this first table 28, a height correction is also given to the windmill 3, the windmill 3 remaining vertical. When the radius of curvature 72 intersects the roller shaft 73, this height correction is all the better.
FIG. 9b shows a side view of a windmill 3 and a part of the handling device 4. The sleepers 78, 79 of the transverse structure 18 have a radius of curvature 74. The first table 28 of the xy-table 19 is movable over these sleepers 78, 79. When when the first table 28 moves over the sleepers, a height correction is also given to the windmill 3 at the same time. When the radius of curvature 74 intersects the roller shaft 75, this height correction is all the better.
It is to be understood that the above description is included to illustrate the operation of preferred embodiments of the invention, and not to limit the scope of the invention. Starting from the above explanation, many variations will be evident to a person skilled in the art that falls within the spirit and scope of the present invention.

Claims (14)

  1. A vessel (1) for transporting an elongated structure such as a windmill (3) in erect position, the vessel comprising a device (5) for adjusting the stability and mass inertia of the vessel for influencing its own swing time of the vessel.
  2. Vessel according to claim 1, provided with a seafast (27) extending along the elongated structure for connecting the elongated structure and the vessel at height.
  3. 3. Vessel as claimed in any of the foregoing claims, wherein the seafast comprises at least a part of the device for adjusting the mass inertia of the vessel.
  4. Vessel according to a preceding claim, provided with a handling device (4) for the manageable connection of the elongated structure and the vessel.
  5. The vessel of claim 4, wherein the handling device comprises an xy table (19) for compensating for vessel movements while placing the elongated structure on a foot (39) for directing the elongated structure to the foot.
  6. The vessel of claim 5, wherein at least one table (28, 29) of the xy table is movable along a curved path for simultaneously adjusting the height of the windmill upon adjustment of the at least one table.
  7. 7. Method for vertically transporting an elongated structure, such as a windmill (3), by means of a vessel (1) according to a preceding claim, comprising one or more of the following steps; - adjusting the center of gravity of the vessel to influence the vessel's own winding time, - measuring the acceleration of the elongated structure, in an embodiment of an end of the elongated structure remote from the vessel.
  8. 8. Method for unloading a free-floating vessel according to a preceding claim, comprising the step of - adjusting the center of gravity of the vessel with the elongated construction for influencing the vessel's own swing time.
  9. A method according to claim 8, further comprising the steps, 10. placing an elongated structure outboard by means of a handling device (4) fixedly connected to the vessel, - compensating vessel movements while placing the elongated structure on a foot by means of the handling device ( 39) for directing the elongated structure towards the foot, 15. damping the movement of the elongated structure at the foot,
  10. 10. Method as claimed in claim 8 or 9, wherein the method further comprises one or more of the steps of: - driving or sliding the elongated construction in the vertical position over the elongated structure, 20. engaging the elongated construction by means of the foot for positioning the elongated structure about its longitudinal axis, - after releasing the elongated structure by the vessel, lowering the elongated structure from a first position to a second position for mutually engaging mounting flanges of the elongated structure and measuring the feet of the acceleration of the elongated structure, in an embodiment of an end of the elongated structure remote from the vessel.
  11. 11. Assembly (2) of a vessel (1) according to a preceding claim, and one or more elongated structures (3) held in a vertical position on the vessel.
  12. A mounting device (6) for use in a method according to any preceding claim 9 or 10, for placing the elongated structure on a base (39), wherein the mounting device comprises; 5. a positioning device (42, 43) for positioning the elongated structure relative to the foot, - a damping device (58, 60) for damping the movement of the elongated structure relative to the foot, - a locking device ( 55, 56, 61, 62) for locking the elongated structure relative to the foot.
  13. Device provided with one or more of the characterizing measures described in the attached description and / or shown in the attached drawings.
  14. A method comprising one or more of the characterizing steps described in the accompanying description and / or shown in the accompanying drawings. 20 -o-o-o-o-o- o-
NL2003465A 2009-09-10 2009-09-10 Method for installing a windmill NL2003465C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2003465 2009-09-10
NL2003465A NL2003465C2 (en) 2009-09-10 2009-09-10 Method for installing a windmill

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL2003465A NL2003465C2 (en) 2009-09-10 2009-09-10 Method for installing a windmill
EP10757323A EP2475574A1 (en) 2009-09-10 2010-09-10 Method for installing a wind turbine
PCT/NL2010/050575 WO2011031148A1 (en) 2009-09-10 2010-09-10 Method for installing a wind turbine
CN2010800403394A CN102574566A (en) 2009-09-10 2010-09-10 Method for installing a wind turbine

Publications (1)

Publication Number Publication Date
NL2003465C2 true NL2003465C2 (en) 2011-03-14

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NL2003465A NL2003465C2 (en) 2009-09-10 2009-09-10 Method for installing a windmill

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EP (1) EP2475574A1 (en)
CN (1) CN102574566A (en)
NL (1) NL2003465C2 (en)
WO (1) WO2011031148A1 (en)

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JP5383631B2 (en) * 2010-11-18 2014-01-08 三菱重工業株式会社 Offshore wind turbine installation ship and offshore wind turbine installation method using the same
KR101281175B1 (en) 2011-04-04 2013-07-02 삼성중공업 주식회사 Ship for installing sea wind power generator and method using the same
NL2010545C2 (en) * 2013-03-28 2014-09-30 Ihc Holland Ie Bv Skidding system for an offshore installation or vessel.
FR3012410B1 (en) * 2013-10-28 2016-01-01 Technip France Structure for transporting and installing at least one structural assembly in a water extend, associated installation and method
NL2011985C2 (en) * 2013-12-19 2015-06-22 Ihc Norex B V Saddle and hook system.
FR3041323B1 (en) * 2015-09-17 2017-11-10 Reel METHOD FOR THE INSTALLATION OF AN INCREASED COMPONENT ELEMENT OF A WINDMILL, ESPECIALLY A WINDMILL MAT

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