WO2010061048A1 - Dispositif et procédé pour dresser une tour d'éolienne - Google Patents

Dispositif et procédé pour dresser une tour d'éolienne Download PDF

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Publication number
WO2010061048A1
WO2010061048A1 PCT/FI2009/050875 FI2009050875W WO2010061048A1 WO 2010061048 A1 WO2010061048 A1 WO 2010061048A1 FI 2009050875 W FI2009050875 W FI 2009050875W WO 2010061048 A1 WO2010061048 A1 WO 2010061048A1
Authority
WO
WIPO (PCT)
Prior art keywords
tower
location
place
centre
support means
Prior art date
Application number
PCT/FI2009/050875
Other languages
English (en)
Inventor
Pekka Koivukunnas
Original Assignee
Rautaruukki Oyj
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
Priority claimed from FI20086041A external-priority patent/FI121348B/fi
Priority claimed from FI20086042A external-priority patent/FI121349B/fi
Application filed by Rautaruukki Oyj filed Critical Rautaruukki Oyj
Publication of WO2010061048A1 publication Critical patent/WO2010061048A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/61—Assembly methods using auxiliary equipment for lifting or holding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/912—Mounting on supporting structures or systems on a stationary structure on a tower
    • F05B2240/9121—Mounting on supporting structures or systems on a stationary structure on a tower on a lattice tower
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to an arrangement for erecting a tower of a wind power plant, and particularly to an arrangement according to the preamble of claim 1 for erecting an at least partly conical tower of a wind power plant by assembling it from top to bottom at a place of location, starting from the top of the tower, the arrangement comprising one or more hoisting devices.
  • the invention further relates to a method of erecting a tower of a wind power plant, and particularly to a method according to the preamble of claim 25 for erecting an at least partly conical tower of a wind power plant by assembling it from top to bottom at a place of location, starting from the top of the tower.
  • the towers of a wind power plant are either tubular towers, lattice towers or combinations thereof.
  • Such towers of a wind power plant are generally too tall and heavy structures to enable elevation in one unit in full length at the place of location.
  • Tubular towers may be erected in a conventional manner either by assembling them at the place of location from top to bottom or from bottom to top.
  • Lattice towers or so-called hybrid towers which consist of both tubular and lattice structures, are instead conventionally assembled from bottom to top.
  • erecting towers consisting at least partly of lattice structures from bottom to top requires extremely large cranes that are capable of lifting parts of a tower to be assembled all the way to the top of the tower, which may be located at a height of even more than 150 m.
  • Tubular towers have also been erected by assembling them from top to bottom at the place of location, in which case a fixed hoisting device has been placed around the place of location of the tower of the wind power plant. By using this fixed hoisting device, an already assembled part of the tower of the wind power plant is lifted up, and a new part of the wind power plant is assembled beneath the uplifted part. The assembly process is continued in this manner until the tower of the wind power plant is in its full length.
  • the fixed hoisting device is not capable of lifting successfully both the parts of an upper end of the tower of the wind power plant having a smaller diameter and the parts of the lower end of the tower having a large diameter, or in order to enable the lifting, complex and expensive solutions have to be implemented which reduce the efficiency of the procedures of assembling and erecting the tower of the wind power plant.
  • An object of the invention is thus to provide an arrangement and a method so as to enable the aforementioned problems to be solved.
  • the object of the invention is achieved by an arrangement according to the characterizing part of claim 1 , which is characterized in that the arrangement comprises supporting points whose position is changeable radially at a distance from a centre of the place of location, the distance being determined by a given assembly stage of the at least partly conical tower of the wind power plant.
  • the object of the invention is further achieved by a method according to the characterizing part of claim 25, which is characterized in that the method comprises the following steps: a) supporting an already assembled assembly layer(s) of the tower against three or more supporting points which reside radially at a distance from a centre of the place of location, the supporting points being determined by the already assembled assembly layers of the tower; b) carrying out a lifting stage for lifting up the already assembled assembly layer(s) of the tower; c) carrying out an assembly stage for assembling a next substantially conical assembly layer beneath the uplifted assembly layer(s) of the tower (2); and d) supporting the already assembled assembly layer(s) of the tower against three or more radially next supporting points which are determined by the assembly layers of the tower assembled after stage c).
  • the invention is based on the idea that the arrangement for erecting an at least partly conical tower of a wind power plant by assembling it from top to bottom at a place of location comprises at least one hoisting device as well as three or more support means for supporting one or more already assembled assembly layers of the tower against the ground or foundations of the tower, the support means being radially movable with respect to the centre of the place of location such that the support means may be placed radially at a distance from the centre of the place of location, the distance being determined by a given assembly stage of the at least partly conical tower of the wind power plant.
  • the at least partly substantially conical of the wind power is erected by assembling it from top to bottom at the place of location.
  • the cross-sectional area and/or the diameter of a lower end of the tower keep increasing as the process for assembling the tower proceeds from top to bottom.
  • the tower In order to be able to support the tower against the ground or the foundations of the tower in each assembly stage of a new assembly layer, the tower has to be supported against supporting points determined by a given assembly stage, the supporting points being placed radially at a distance from the centre of the place of location of the tower. As the assembly of the tower advances, the locations of the supporting points, as a result of the conicalness of the tower, move radially farther away from the centre of the place of location.
  • the support means are provided to be radially movable with respect to the centre of the place of location, in which case the support means, in accordance with a given assembly stage of the tower, are always movable out- side an already assembled part of the tower to the supporting points determined by the cross-sectional area of the lower end of a given already assembled tower.
  • separate fixed supporting points may have been provided radially sequentially around the tower, which is supported against these supporting points according to a given assembly stage.
  • Assembling the tower from top to bottom herein refers to assembling the structure of the tower at the place of location such that the upper end of the tower is assembled first and, subsequently, the tower is assembled by installing and assembling new parts beneath the finished parts of the tower until finally the lowest part of the tower is assembled and supported against the foundations of the tower.
  • the support means are provided to be symmetrically movable with respect to the centre of the place of location.
  • the support means may be provided to be movable along rail structures.
  • the rail structures may be provided at the place of location radially with respect to the centre of the place of location.
  • the arrangement comprises, provided for each support means, a rail structure which extends radially with respect to the centre of the place of location and to which the support means is mounted so as to be movable along the rail structure.
  • the at least partially conical tower of the wind power plant is an at least partially lattice- structured tower provided with three or more substantially vertical legs.
  • the support means are provided in a direction parallel with that of the legs to be radially movable with respect to the centre of the place of location such that the support means may be placed in a given assembly stage of the tower at supporting points determined by the already assembled assembly layers of the tower with respect to the centre of the place of location for supporting the at least partly conical tower of the wind power plant by the legs at a given assembly stage.
  • the arrangement comprises one support means for each substantially vertical leg of the tower.
  • the arrangement also comprises one or more hoisting devices for lifting up the already assembled assembly layers of the tower to a height corresponding with that of an assembly layer of the tower to be assembled in a next assembly stage, or higher, such that the assembly layer to be assembled in the next assembly stage may be assembled beneath the uplifted finished assembly layers of the tower.
  • the arrangement comprises one hoisting device placed inside an already assembled assembly layer(s) of the tower substantially at the centre of the place of location.
  • the arrangement comprises three or more hoisting devices which are provided to be radially movable with respect to the centre of the place of location such that the hoisting devices may be placed radially at a distance from the centre of the place of location, the distance being determined by a given assembly stage of the at least partly conical tower of the wind power plant.
  • An advantage of the method and arrangement according to the invention is that it enables a conical tower to be erected at a place of location by assembling it from top to bottom one assembly layer at a time. Consequently, no enormous cranes or mobile cranes having a height corresponding with the final height of the tower to be erected are needed for erecting an at least partly conical tower of a wind power plant, which further enables wind power plants to be elevated also at places of location to which no big roads exist or to which no big roads have to be constructed solely for the purpose of erecting a wind power plant.
  • Figure 1 is a schematic perspective view showing an embodiment of the present invention
  • Figure 2 is a perspective view showing the embodiment of Figure 1 , wherein finished assembly layers of a tower of a wind power plant are supported against the ground or foundations of the tower;
  • Figure 3 is a perspective view showing the embodiment of Figure 1 , wherein the finished assembly layers of the tower of the wind power plant have been lifted up by means of a hoisting device;
  • Figure 4 is a perspective view showing the embodiment of Figure 1 , wherein a new substantially conical assembly layer has been assembled beneath the finished assembly layers of the tower of the wind power plant, the new assembly layer being supported against the ground or the foundations of the tower, and wherein support means for supporting the tower against the ground or the foundations of the tower have been moved radially away from a centre of a place of location of the tower to new supporting points;
  • Figure 5 shows the situation of Figure 4 in closer detail
  • Figure 6 is a more detailed perspective view showing the embodiment of Figure 1 , wherein new conical assembly layers have been assembled at a lower end of the tower of the wind power plant and supported against the ground or the foundations of the tower, and the support means have been moved radially further away from the centre of the place of location of the tower to new supporting points;
  • Figure 7 is a more detailed perspective view showing the embodiment of Figure 6, wherein new conical assembly layers have been assembled at the lower end of the tower of the wind power plant and lifted up by the hoisting device;
  • Figure 8 is a side view showing the situation of Figure 7;
  • Figure 9 shows an embodiment for engaging the hoisting device with structures of the tower
  • Figure 10 is a schematic perspective view showing an embodiment of the present invention.
  • Figure 11 is a more detailed perspective view showing the embodiment of Figure 1 , wherein the finished assembly layers of the tower of the wind power plant are supported against the ground or the foundations of the tower;
  • Figure 12 is a more detailed perspective view showing the embodiment of Figure 1 , wherein the finished assembly layers of the tower of the wind power plant have been lifted up by means of hoisting devices;
  • Figure 13 shows a more detailed perspective view showing the embodiment of Figure 1, wherein a new substantially conical assembly layer has been assembled beneath the finished assembly layers of the tower of the wind power plant and supported against the ground or the foundations of the tower;
  • Figure 14 is a perspective view showing the embodiment of Figure 1 , wherein new conical assembly layers have been assembled at the lower end of the tower of the wind power plant and supported against the ground or the foundations of the tower, and the hoisting devices have been moved radially away from the centre of the place of location of the tower to a new lifting position;
  • Figure 15 is a more detailed perspective view showing the embodiment of Figure 1 , wherein new conical assembly layers have been assembled at the lower end of the tower of the wind power plant and supported against the ground or the foundations of the tower, and the hoisting devices have been moved radially away from the centre of the place of location of the tower to a new lifting position;
  • Figure 16 is a more detailed perspective view showing the embodiment of Figure 6, wherein new conical assembly layers have been assembled at the lower end of the tower of the wind power plant and lifted up by the hoisting devices which have been moved radially away from the centre of the place of location of the tower to a new lifting position;
  • Figure 17 is a side view showing the situation of Figure 7; and Figure 18 shows an embodiment of supporting the tower against the ground or the foundations of the tower.
  • Figure 1 is a perspective view showing a partly assembled tower 2 of a wind power plant as well as an arrangement according to the present invention for erecting and assembling the tower 2.
  • a nacelle 18 of the wind power plant has already been installed at an upper end of the tower 2, the nacelle 18 comprising blades 20.
  • Figure 2 shows the arrangement according to the present invention of Figure 1 in closer detail.
  • the tower 2 of the wind power plant to be assembled is a lattice-structured tower which comprises six substantially vertical legs 8.
  • a place of location of the tower 2 is provided with rail structures 6 extending radially from a centre thereof.
  • the rail structures may be conventional railway rail structures or any other corresponding rail structures which comprise one, two, three or more rails.
  • the rail structures 6 may be anchored to the ground e.g. by soil screws and further, when necessary, rail foundations may be provided underneath the rails by means of mass exchange, for instance.
  • the foundations 22 of the tower 2 may comprise e.g. a sensor cast in the ground or, alternatively, the foundations may be provided by means of a bored pile.
  • the foundations 22 of the tower may also be utilized for supporting the rail structures 6, in which case the rail structures are supported against the foundations 22 of the tower.
  • the rail structures 6 extend radially from the centre of the place of location in directions parallel with those of the foundations of the tower 2.
  • the rail structures 6 may be engaged with one another at the centre of the place of location, e.g. by means of a centre piece, for further enhancing the support given to the rail structures.
  • the rail structures may further extend from the centre of the place of location to the exterior of the foundations 22 of the tower 2, which enables the rail structures 6 to be utilized also for transporting materials and the tower to the place of location while the tower is being erected and assembled.
  • support means 12 are arranged that are provided to be radially movable on the rails with respect to the place of location of the tower 2.
  • the support means 12 are thus radially, and preferably symmetrically, movable with respect to the centre of the place of location and lockable or attachable to a desired position with respect to the centre of the place of location such that they are not allowed to move.
  • the support means 12 are provided radially in a direction parallel with that of the legs 8 of the tower 2, and the foundations 22, with respect to the centre of the place of location.
  • the support means are thus provided to be radially movable in a given assembly stage of the tower 2 to supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • These support means 12 movable along the rail structures may comprise e.g. a carriage, carrier, platform or the like against/to which the tower 2, and particularly its leg 8, may be supported and/or fastened between lifting stages.
  • These movable support means are further provided to be lockable in a given assembly stage of the tower 2 to the supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location such that they are not allowed to move.
  • a solution for fastening the leg 8 of the tower 2 to the support means 12 comprises a flange 13 and a connecting piece 15 provided in the leg 8.
  • the connecting piece 15 may be fastened to the flange 13 e.g. by a bolt joint.
  • the connecting piece 15 may be a normal connecting piece of the tower 2 which enables the parts of the tower 2 to be fastened to one another.
  • the connecting piece 15 may also comprise a ring, hole or a lug to enable a cable or the like of a hoisting machine to be fastened thereto by means of a shackle, for instance.
  • the tower 2 is a lattice-structured tower 2 including three or more substantially vertical legs 8, in Figure 2 six legs.
  • the support means 12 are thus provided to be radially movable in a direction parallel with that of the legs 8 with respect to the centre of the place of location such that the support means 12 may be placed in a given assembly stage of the tower 2 in to the supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location for supporting the at least partly conical tower 2 of the wind power plant by the legs 8 in a given assembly stage.
  • the arrangement comprises one support means 12 for each substantially vertical leg 8 of the tower 2.
  • the arrangement further comprises one or more hoisting devices 4, 44 arranged to lift up an already assembled assembly layer(s) of the tower 2 to a height corresponding with a height of an assembly layer of the tower 2 to be assembled in the next assembly stage, or higher, such that the assembly layer to be assembled in the next assembly stage may be assembled beneath the uplifted finished assembly layers of the tower 2.
  • the arrangement according to Figure 2 comprises one hoisting device 4 placed inside the already assembled assembly layer(s) of the tower 2, substantially at the centre of the place of location.
  • a hoisting device according to Figure 2 may be a jack hoisting device or a jack-type hoisting device.
  • the arrangement comprises three or more hoisting devices provided to be radially movable with respect to the centre of the place of location such that the hoisting devices may be placed radially at a distance from the centre of the place of location, the distance being determined by a given assembly stage of the at least partly conical tower 2 of the wind power plant.
  • These movable hoisting devices 4 may be arranged to be radially movable along the rail structures 6.
  • the hoisting devices are provided to be radially movable in a given assembly stage of the tower 2 to a lifting position determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the hoisting devices are provided in a direction parallel to that of the legs 8 to be radially movable with respect to the centre of the place of location such that the hoisting devices may be placed in a given assembly stage of the tower 2 to a lifting position determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location for lifting the at least partly conical tower 2 of the wind power plant by the legs 8 in a given assembly stage.
  • the arrangement may comprise one hoisting device for each substantially vertical leg 8 of the tower 2.
  • such a movable hoisting device may comprise a hoist tower and a hoisting machine installed at an upper or lower end of the hoist tower.
  • the hoisting machine may be a jack hoisting machine, winch hoisting machine, cable hoisting machine or any other prior art hoisting machine.
  • the arrangement may thus comprise at least three hoisting devices that are placed to be moved symmetrically with respect to the centre of the place of location.
  • the number of movable hoisting devices, and thus also that of rail structures 6, corresponds with the number of legs 8 of the tower 2.
  • the tower 2 is locked to the ground in an adjustable manner by means of stays, shown schematically in Figure 1.
  • the stays comprise stays extending from the tower 2 radially in at least three directions, which enable the position of the tower 2 to be adjusted and guided.
  • the stays comprise winch devices mounted in the ground as well as wires, cables or the like extending from the winch devices to the tower 2.
  • the tightness and length of the wires may be adjusted by means of the winch devices.
  • the winch devices are used by means of a computer such that all winch devices operate in synchrony with one another.
  • the winch devices may also be anchored to the ground by means of soil screws or the like or in another alternative manner.
  • the arrangement further comprises at least three first stay means 14 for locking the lower end of an already assembled part of the tower 2 to the ground while the tower 2 is being erected and three second stay means 16 for locking the upper end of the already assembled part of the tower 2 to the ground for keeping the already assembled part of the tower 2 in a desired position.
  • the first stay means 14 comprise a winch device anchored to the ground as well as a wire extending between the winch device 14 and the lower end of the already assembled part of the tower 2, while the second stay means 16 comprise a winch device anchored to the ground as well as a wire extending between the winch device 16 and the upper end of the already assembled part of the tower 2.
  • the winch devices of the first stay means 14 are mounted to the ground radially closer to the centre of the place of location of the tower 2 than the winch devices of the second stay means 16.
  • such first and second stay means 14, 16 are provided radially in a direction parallel with that of each leg 8 of the tower 2.
  • the stay means 14, 16 may be provided e.g. as an extension of the rail structures 6, as shown in Figure 1.
  • an assembly layer refers to a new part of the tower 2 to be assembled beneath an already assembled part of the tower.
  • the height of this new assembly layer substantially corresponds with the height to which the finished layers have been lifted in a lifting stage.
  • a new assembly layer may be assembled from single parts or from complete blocks that have been assembled beforehand at the place of location of the tower or beforehand somewhere else and transported to the place of location of the tower as a pre-assembled block.
  • the above-described arrangement according to the present invention enables a method of erecting an at least partly conical tower 2 of a wind power plant by assembling it from top to bottom at a place of location.
  • the method according to the present invention comprises at least the following steps: supporting an already assembled assembly layer(s) of the tower 2 against the ground or the foundations of the tower 2 by means of three or more support means 12 which are provided to be radially movable with respect to the centre of the place of location to supporting points determined by the already assembled assembly layers of the tower 2.
  • a lifting stage is carried out for lifting up the already assembled assembly layer(s) of the tower 2.
  • an assembly stage is carried out for assembling a next substantially conical assembly layer beneath the uplifted assembly layer(s) of the tower 2 and the support means 12 are moved radially away from the centre of the place of location of the tower 2 to new supporting points of the already assembled assembly layers of the tower 2, the new supporting points being determined by the already assembled assembly layers of the tower 2.
  • the previous steps are repeated one or more times for assembling the tower 2 or at least a substantially conical part thereof to its full length and for erecting it at the place of location.
  • the support means 12 are moved during an assembly stage or a lifting stage.
  • the support means 12 are moved along the rail structures 6 which extend radially with respect to the centre of the place of location.
  • the tower 2 is an at least partly lattice-structured tower including three or more substantially vertical legs 8, whereby the tower 2 is supported by the legs 8.
  • the support means 12 are moved radially in a direction parallel with that of the legs 8 of the tower 2 with respect to the centre of the place of location for placing in a given assembly stage of the tower 2 the support means 12 in to the supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the tower 2 is supported by all its legs 8.
  • the tower 2 may be an at least partly conical closed-casing tower 2 or an at least partly conical tower of another type.
  • Figure 2 shows an initial situation wherein the tower 2 comprises one or more already assembled assembly layers.
  • These already assembled assembly layers may have been assembled e.g. in the vicinity of the place of location and lifted to the position according to Figure 2 to the place of location by a small mobile crane.
  • the height of this already assembled part of the tower 2 may be e.g. about 35 m.
  • the already assembled assembly layers of the tower 2 are supported in a vertical position by means of the support means 12 against the ground or the foundations of the tower 2.
  • the top of these already assembled assembly layers of the tower 2, which form an upper end of the tower 2, is provided with a nacelle 18 which comprises e.g. the blades 20 of the wind power plant.
  • the nacelle 18 and the blades 20 may be lifted to the upper end of these already assembled assembly layers by means of the small mobile crane.
  • the support means 12 are moved radially along the rail structures 6 beneath the already assembled tower 2 to the supporting points near and around the centre of the place of location, as shown in Figure 2.
  • the process of erecting the tower 2 is continued by fastening an already assembled part of the tower 2 to the hoisting device 4 or by placing the hoisting device in to a lifting position and unfastening the support means 12 and the already assembled parts of the tower 2 from one another. Then, a lifting stage is carried out and the already assembled assembly layers of the tower 2 are lifted up by means of the hoisting devices, to an uplifted position according to Figure 3.
  • the hoisting device 4 is arranged to lift up the already assembled assembly layer(s) of the tower 2 to a height corresponding with that of an assembly layer to be assembled in a next assembly stage, or higher, such that the assembly layer to be assembled in the next assembly stage may be assembled beneath the uplifted finished assembly layers of the tower 2. While the already assembled assembly layers of the tower 2 are in the uplifted position, a new assembly layer is assembled beneath them in accordance with Figure 4. Thus, the length of the tower 2 has increased by one as- sembly layer and the thus produced finished assembly layers are again supported against the support means 12.
  • the support means 12 cannot be in the same position with respect to the centre of the place of location after the assembly of the new assembly layer as before it. Consequently, the support means 12 are moved during the lifting stage or the assembly stage radially away from the centre of the place of location to new supporting points determined by the new conical assembly layer to be assembled in the assembly stage.
  • Figure 5 shows in closer detail the radial rail structures 6 and support means 12 when the already assembled assembly layers of the tower 2 are supported against the support means 12.
  • Figure 6 describes how the cross-sectional area and diameter of the lower end of the conical tower 2 increase from one assembly stage to the next as well as how the support means 12 are moved radially along the rail structures 6 away from the centre of the place of location as the lifting position and the supporting points determined by the assembly stages change as a result of the conicalness.
  • Figure 7 shows the last lifting stage, when the tower 2 lacks only one, i.e. the lowest, assembly layer.
  • Figure 8 the same is shown as a side view.
  • the last assembly stage is carried out wherein the last assembly layer is assembled beneath the already assembled assembly layers of the tower 2 and further fastened to and supported against the foundations 22 of the tower 2.
  • the assembly may be carried out using separate parts or at least partly already assembled elements.
  • the already assembled assembly layer(s) of the tower 2 is/are lifted up by the hoisting device 4 placed inside the already assembled assembly layer(s) of the tower 2 substantially at the centre of the place of location.
  • the hoisting device 4 placed inside the already assembled assembly layer(s) of the tower 2 substantially at the centre of the place of location.
  • one or more lifting pipes 5 are added between lifting stages for carrying out the next lift.
  • Each of these lifting pipes may be separately attached to the structures of the tower 2, e.g. by horizontal bars and diagonal bars 7 according to Figure 9.
  • the already assembled assembly layer(s) of the tower 2 is/are lifted up by means of three or more hoisting devices which are placed radially with respect to the centre of the place of location around the already assembled assembly layers of the tower 2 in to a lifting position determined by the already assembled assembly layers of the tower 2.
  • these hoisting devices are provided to be movable such that they are moved radially away from the centre of the place of location of the tower 2 around the already assembled assembly layers of the tower 2 to a new lifting position determined by the already assembled assembly layers of the tower 2.
  • the hoisting devices may be moved along the rail structures 6.
  • the hoisting devices 4 may be moved in a direction parallel with that of the legs 8 of the tower 2 radially with respect to the centre of the place of location in order to place the hoisting devices 4 in a given assembly stage of the tower 2 to a lifting position determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location. Further, the tower 2 may be lifted by all its legs 8. The hoisting devices are moved when the finished assembly layers of the tower 2 are supported against the support means 12 or during an assembly stage.
  • Figure 10 is a perspective view showing another embodiment and a partly assembled tower 2 of a wind power plant as well as an arrangement according to the present invention for erecting and assembling the tower 2.
  • the basic elements of Figure 10 are similar to those shown in Figure 1.
  • hoisting devices 44 are installed that are provided to be radially movable on the rails with respect to the place of location of the tower 2.
  • the hoisting devices 44 are movable radially, and preferably symmetrically, with respect to the centre of the place of location, and lockable or attachable to a desired position with respect to the centre of the place of location such that they are not allowed to move.
  • the hoisting devices 44 are provided in a direction parallel with that of the legs 8 of the tower 2, and the foundations 22, radially with respect to the centre of the place of location.
  • the hoisting devices 44 are thus provided to be radially movable in a given assembly stage of the tower 2 to a lifting position determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the hoisting device 44 On top of each rail structure 6, one hoisting device 44 is installed which is movable along the rail structure 6.
  • the hoisting device 44 comprises a hoist tower 10 and a hoisting machine provided at an upper end of the hoist tower 10.
  • the hoisting machine may be a jack hoisting machine, winch hoisting machine, cable hoisting machine or any other prior art hoisting machine.
  • the arrangement thus comprises at least three hoisting devices that are placed to be moved symmetrically with respect to the centre of the place of location.
  • the number of hoisting devices, and thus also that of rail structures 6, corresponds with the number of legs 8 of the tower 2.
  • the arrangement according to the present invention further comprises at least three separate support means 12 against which an unfinished tower 2 or a completed part of the tower 2 may be supported between the lifting stages carried out by the hoisting devices 44.
  • the separate support means 12 may be used for supporting one or more already assembled assembly layers of the tower 2 against the ground or the foundations of the tower 2 between the lifting stages carried out by the hoisting devices 44.
  • These separate support means 12 may be provided as fixed support means against which one or more already assembled assembly layers of the tower 2 may be supported.
  • the fixed support means may comprise assembling points installed beforehand or the may comprise e.g. a support rail provided on the rail structures 6.
  • the supporting points and the support rail are further placed such that one or more already assembled assembly layers of the tower 2 may be supported at a distance from the centre of the place of location, the distance being determined by a given assembly stage.
  • the supporting points are located radially sequentially in a direction parallel with that of the legs of the tower 8 with respect to the centre of the place of location.
  • the support rail extends radially with respect to the centre of the place of location, and the legs of the already assembled assembly layers of the tower 2 may be supported against the rails at a distance from the centre of the place of location, the distance being determined by a given assembly stage.
  • the support means 12 are provided to be radially movable with respect to the centre of the place of location such that the support means 12 may be placed radially in an assembly stage of the at least partly conical tower 2 of the wind power plant at the supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the support means 12 are provided in a direction parallel with that of the legs to be radially movable with respect to the centre of the place of location such that the support means 12 may be placed in a given assembly stage of the tower 2 at supporting points determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the support means 12 may move together with the hoisting devices 44 or irrespectively of the hoisting devices 44.
  • the number of movable support means 12 is three or more; preferably, the arrangement comprises one support means 12 for each substantially vertical leg 8 of the tower 2.
  • a separate support means 12 is provided for each hoisting device 44.
  • the separate support means 12 are arranged to be radially movable along the rail structures 6.
  • These support means 12 movable along the rail structures may comprise e.g. a carriage, carrier, platform or the like against/to which the tower 2, and particularly its leg 8, may be supported and/or fastened between the lifting stages.
  • FIG. 18 shows a solution for fastening a leg 8 of the tower 2 to a support means 12.
  • the support means 12 comprises a flange 13, and the leg 8 is provided with a connecting piece 15.
  • the connecting piece 15 may be fastened to the flange 13 e.g. by a bolt joint.
  • the connecting piece 15 may a normal connecting piece of the tower 2 for fastening the parts of the tower 2 to one another.
  • the connecting piece 15 may further comprise a ring, hole or a lug to enable a cable or the like of a hoisting machine to be fastened thereto e.g. by means of a shackle.
  • the above-described apparatus enables a method of erecting an at least partly conical tower 2 of a wind power plant 2 by assembling it from top to bottom at a place of location.
  • the method according to the present invention comprises at least the following steps: carrying out a lifting stage for lifting up an already assembled assembly layer(s) of the tower 2 by means of three or more hoisting devices 44 which are placed radially with respect to the centre of the place of location around the already assembled assembly layers of the tower 2 in to a lifting position determined by the already assembled assembly layers of the tower 2.
  • an assembly stage is carried out for assembling a next substantially conical assem- bly layer beneath the uplifted assembly layer(s) of the tower 2, and the already assembled assembly layer(s) of the tower 2 is/are supported against three or more radially next supporting points.
  • the hoisting device 44 is moved radially away from the centre of the place of location of the tower 2 around the already assembled assembly layers of the tower 2 to a new lifting position.
  • the previous steps are repeated one or more times for assembling the tower 2 or the at least substantially conical part thereof to its full length and for erecting it at the place of location.
  • Figure 11 shows an initial situation wherein the tower 2 comprises one or more already assembled assembly layers.
  • These already assembled assembly layers may have been assembled e.g. in the vicinity of the place of location and lifted to the position according to Figure 11 to the place of location by a small mobile crane.
  • the height of this already assembled part of the tower 2 may be e.g. about 35 m.
  • the already assembled assembly layers of the tower 2 are supported in a vertical position by means of the support means 12 against the ground or the foundations of the tower 2.
  • the top of these already assembled assembly layers of the tower 2, which form an upper end of the tower 2, is provided with a nacelle 18 which comprises e.g. the blades 20 of the wind power plant.
  • the nacelle 18 and the blades 20 may be lifted to the upper end of these already assembled assembly layers by means of the separate small mobile crane.
  • the hoisting devices 44 are moved radially along the rail structures 6 around, particularly to the vicinity of, the already assembled part of the tower 2 to a lifting position, as shown in Figure 11.
  • the process of erecting the tower 2 is continued by fastening an already assembled part of the tower 2 to the hoisting devices 44 and unfastening the support means 12 and the already assembled parts of the tower 2 from one another. Then, a lifting stage is carried out and the already assembled assembly layers of the tower 2 are lifted up by means of the hoisting devices, to an uplifted position according to Figure 12.
  • the hoisting devices 44 are arranged to lift up the already assembled assembly layer(s) of the tower 2 to a height corresponding with that of an assembly layer of the tower 2 to be assembled in a next assembly stage, or higher, such that the assembly layer to be assembled in the next assembly stage may be assembled beneath the uplifted finished assembly layers of the tower 2.
  • the hoisting devices 44 no longer reside in a correct lifting position but they have to be moved radially away from the centre of the place of location along the rail structures 6 to a new lifting position determined by the new assembled assembly layer.
  • the hoisting devices may be moved radially when the finished assembly layers are supported against the support means 12 and e.g. during the assembly stage or thereafter.
  • Figures 14 and 15 describe how the cross-sectional surface area and diameter of the lower end of the conical tower 2 increase from one assembly stage to the next, as well as how the support means 12 and the hoisting devices are moved radially along the rail structures 6 away from the centre of the place of location as the lifting position and the supporting points determined by the assembly stages change as a result of the conicalness.
  • Figure 16 shows the last lifting stage, when the tower 2 lacks only one, i.e. the lowest, assembly layer.
  • Figure 17 is a side view showing the same. In the situation of Figures 16 and 17, the last assembly stage is carried out wherein the last assembly layer is assembled beneath the already assembled assembly layers of the tower 2 and further fastened to and supported against the foundations 22 of the tower 2. In the assembly stages, the assembly may be carried out using separate parts or at least partly already assembled elements.
  • the hoisting devices 44 are moved in a direction parallel to that of the legs 8 of the tower 2 radially with respect to the centre of the place of location for placing the hoisting devices in a given assembly stage of the tower 2 in to a lifting position determined by the already assembled assembly layers of the tower 2 with respect to the centre of the place of location.
  • the tower 2 is lifted in the lifting stage by all its legs 8.
  • the already assembled assembly layer(s) of the tower 2 may be lifted in the lifting stage by using first hoisting devices 44 and the already assembled assembly layer(s) of the tower 2 are supported after the lifting stage against second hoisting devices or by means of the second hoisting devices against the ground or the foundations of the tower 2 and the next lifting stage is carried out by means of the second hoisting devices 44.
  • the first and the second hoisting devices are both used alternately for lifting and supporting the already assembled assembly layers.
  • the tower 2 comprises six, eight or ten or a larger even number of legs 8, in which case the already assembled assembly layer(s) of the tower 2 is/are lifted in the lifting stage by using every other hoisting device 44, and after the lifting stage the already assembled assembly layer(s) of the tower 2 is/are supported by means of the hoisting devices 4 provided between said every other hoisting device 4 against the ground of the foundations of the tower 2 and the next lifting stage is carried out by means of the hoisting devices 44 provided between said every other hoisting device 44.
  • the hoisting devices 44 serve as movable supporting points.
  • the tower 2 may be supported against the ground by means of stay means 14, 16.
  • the stay means may further be used for adjusting the position of the tower 2 and for supporting the tower 2.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)

Abstract

L'invention porte sur un dispositif et sur un procédé pour dresser une tour au moins partiellement conique (2) d'une éolienne en l’assemblant du haut vers le bas en un emplacement, le dispositif comprenant au moins un dispositif de levage (4, 44). Le dispositif comprend au moins trois moyens de support (12) pour supporter une ou plusieurs couches d'assemblage déjà assemblées de la tour (2) contre le sol ou les fondations de la tour (2), les moyens de support (12) étant disposés de façon à être radialement mobiles par rapport à un centre de l'emplacement de telle sorte que les moyens de support (12) peuvent être placés radialement à une distance du centre de l'emplacement, la distance étant déterminée par un étage d'assemblage donné de la tour au moins partiellement conique (2) de l'éolienne.
PCT/FI2009/050875 2008-11-03 2009-10-30 Dispositif et procédé pour dresser une tour d'éolienne WO2010061048A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20086041A FI121348B (fi) 2008-11-03 2008-11-03 Järjestely ja menetelmä tuulivoimalan tornin pystyttämiseksi
FI20086042A FI121349B (fi) 2008-11-03 2008-11-03 Järjestely ja menetelmä tuulivoimalan tornin pystyttämiseksi
FI20086042 2008-11-03
FI20086041 2008-11-03

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WO2010061048A1 true WO2010061048A1 (fr) 2010-06-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003396A (zh) * 2015-07-22 2015-10-28 许继集团有限公司 一种固定座及使用该固定座的风力发电装置
EP3109375A1 (fr) * 2015-06-26 2016-12-28 General Electric Company Système et procédé d'assemblage de sections de tour d'une structure de tour de turbine éolienne
US20170009747A1 (en) * 2015-06-26 2017-01-12 General Electric Company System and method for assembling tower sections of a wind turbine lattice tower structure
WO2024052865A1 (fr) * 2022-09-08 2024-03-14 Gregory John Neighbours Système de manipulation servant à manipuler des sections d'une structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001254668A (ja) * 2000-03-09 2001-09-21 Tokyo Electric Power Co Inc:The 風力発電タワーの組立装置及び組立方法
JP2003239567A (ja) * 2002-02-20 2003-08-27 Tomoe Giken:Kk 塔状構造物の構築方法
WO2007125138A1 (fr) * 2006-03-28 2007-11-08 Gamesa Innovation & Technology, S.L. Materiel de hissage pour montage d'une éolienne

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001254668A (ja) * 2000-03-09 2001-09-21 Tokyo Electric Power Co Inc:The 風力発電タワーの組立装置及び組立方法
JP2003239567A (ja) * 2002-02-20 2003-08-27 Tomoe Giken:Kk 塔状構造物の構築方法
WO2007125138A1 (fr) * 2006-03-28 2007-11-08 Gamesa Innovation & Technology, S.L. Materiel de hissage pour montage d'une éolienne

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3109375A1 (fr) * 2015-06-26 2016-12-28 General Electric Company Système et procédé d'assemblage de sections de tour d'une structure de tour de turbine éolienne
US20160376807A1 (en) * 2015-06-26 2016-12-29 General Electric Company System and method for assembling tower sections of a wind turbine lattice tower structure
US20170009747A1 (en) * 2015-06-26 2017-01-12 General Electric Company System and method for assembling tower sections of a wind turbine lattice tower structure
US9845612B2 (en) 2015-06-26 2017-12-19 General Electric Company System and method for assembling tower sections of a wind turbine lattice tower structure
US9951754B2 (en) 2015-06-26 2018-04-24 General Electric Company System and method for assembling tower sections of a wind turbine lattice tower structure
CN105003396A (zh) * 2015-07-22 2015-10-28 许继集团有限公司 一种固定座及使用该固定座的风力发电装置
WO2024052865A1 (fr) * 2022-09-08 2024-03-14 Gregory John Neighbours Système de manipulation servant à manipuler des sections d'une structure

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