WO2010121733A2

WO2010121733A2 - Tower for a wind power installation

Info

Publication number: WO2010121733A2
Application number: PCT/EP2010/002281
Authority: WO
Inventors: Holger Giebel; Gregor Prass
Original assignee: Timber Tower Gmbh
Priority date: 2009-04-19
Filing date: 2010-04-14
Publication date: 2010-10-28
Also published as: DE102009017586A1; EP2422029A2; US20120036798A1; CA2759150A1; WO2010121733A3; AT12187U2; AT12187U3

Abstract

The invention relates to a method for erecting a tower for a wind power installation, and to a tower for a wind power installation. A coating is at least partially applied to the outer surface of the tower in such a way that it absorbs tensile stresses acting on the outer surface of the tower, and the coating seals the outer surface of the tower against environmental influences, especially humidity, that act on the exterior of the surface.

Description

Tower for a wind turbine

description

The invention relates to a method for erecting a tower for a wind turbine and a tower for a wind turbine.

In a wind turbine is a device for generating electrical energy. The wind turbine is provided with a foundation, a tower which is built on the foundation, and a gondola which is placed on the tower. At the nacelle is the drive unit connected to rotor blades for power generation.

The construction of the tower is geared to the static load generated by the nacelle on the tower and the dynamic loads generated by the rotation of the rotor's rotor blades and the possibility of the gondola moving depending on the wind direction. Well-known towers are made of steel rings or concrete elements. The bases of the known towers are either polygons or annular circle segments. Polygonal towers, which are made of individual segments of concrete, are known from WO 2003/069099 A. Furthermore, it is known to erect such polygonal towers made of wood (DE 10 2007 006 652 A1).

From an economic point of view, it is desirable to maximize the height of the towers, as the yield of a wind turbine depends on the hub height of the rotor and the yield increases as the height increases. At the same time rise due to the greater height of the tower requirements for the statics of the tower and the material of the tower. The wall thicknesses increase and this increases the construction effort of the tower. In addition to the operating loads that act on the tower, also affect the climatic stress on the tower. In steel towers, this climatic stress is counteracted by the application of a coat of paint on the tower. When using reinforced concrete, the steel framework absorbs the tensile loads of the tower. The concrete cover absorbs the pressure loads and at the same time serves to protect the steel structure against the environmental influences in the form of moisture and chemical reactions by the surrounding atmosphere. The thickness of the concrete must ensure that the steel framework is protected against these loads. In the case of wooden constructions, the corresponding weather conditions are counteracted by painting. At the same time, only wood materials approved for outdoor use can be used for the construction of wooden towers.

The object of the invention is therefore to provide a method for erecting a tower for a wind turbine and a tower for a wind turbine, in which it is possible to increase the height of construction while saving material and / or to reduce manufacturing costs.

With regard to this method, the object according to the invention is achieved in that on the outer surface of the tower at least partially a

Coating is applied, and the coating is applied so that the coating absorbs tensile loads acting on the outer surface of the coating

Tower act, and that the coating the outer surface against external to the surface of the tower acting environmental influences, in particular moisture, seals.

With regard to steel towers, such a coating makes it possible to reduce the amount of steel required in terms of tensile loads, since the coating absorbs tensile loads while at the same time saving the coat of the steel elements. With regard to concrete towers it is possible to reduce the concrete cover over the steel framework, so that a cost reduction arises. With regard to wooden towers, the coating makes it possible to use wood-based materials and their bonding agents which have only an approval for interior work. Another teaching of the invention provides that the coating in the coated portion of the tower is applied over the entire surface, and the coated portion wrapped. It is advantageous that the coating is a laminate, a film, a fabric, a textile or a plate. Particularly preferred is a film, a plate, a fabric and / or textile made of plastic, with particular preference polypropylene, polyurethane, polyvinyl chloride, polyester, polycarbonate or polyethylene are used as materials. Such materials are able to absorb tensile stresses and at the same time provide a seal and thus a seal against the environmental influences acting on the surface of the tower. At the same time, such materials have lower basis weights than, for example, paints on the surface of the tower, so that this weight can be reduced in the construction in terms of static pressure load, whereby the tower construction can be made slimmer overall. At the same time, the cost of these materials, for example, compared to paints, lower.

Another teaching of the invention provides that the coating is applied at different times of the tower direction. First

Variant, the coating is applied after erection of the tower. This can be done from above or below. Alternatively, the coating in sections during the construction of the tower or on the individual

Components are applied before the erection of the tower. If the coating is applied before erection of the tower, then it has proved to be advantageous to apply the coating on site to the construction site.

This reduces the cost of the coating and at the same time it can be ensured that the coating is not damaged during the transport of the individual elements. The individual sections of the coating are then connected to one another, wherein the bonding is particularly preferably carried out by gluing or welding of the joints. Another teaching of the invention provides that the coating is applied directly to the components of the tower. Preferably, the application takes place over the entire surface by gluing. Alternatively, a partial bonding can take place on a surface of a component. Bonding ensures that the static load is absorbed by the coating.

Another teaching of the invention provides that the tower is at least partially made of steel, concrete, in particular reinforced concrete, and / or wood is built. Preferably, the wood is cross-laminated timber and / or wood composites.

A further teaching according to the invention provides that the coating has a lower vapor permeability than wood itself when using wood as tower material. In this way, the diffusion is reversed, i. H. that the vapor permeability of the tower does not become larger towards the outside, but to the inside.

Another teaching of the invention provides that heat is generated in the interior of the tower, wherein it is preferably in the case of wind turbines to power electronics of the wind turbine. Due to the heat generation, the moisture inside the tower is removed upwards and the moisture escaping from the wood is moved towards the inside of the tower and also removed. If the coating is damaged, the moisture is transported away to the inside. The moisture in the particles and minerals gradually closes the damage to the coating, while still ensuring that the moisture escapes inwards.

Another teaching of the invention provides that the supporting structure of the tower is constructed of materials that are not suitable for outdoor use. These are materials that have been approved for indoor use only in the construction of buildings. By applying the coating it becomes possible to use such materials as well Use connection means for the support structure of a tower for a wind turbine, because the coating ensures the state of the internal use of the materials.

Another teaching of the invention provides that the tower is assembled from individual components on site. The components assembled on site are flat elements. By such a composition of the tower of individual flat elements ensures that the transport cost of the individual towers is significantly reduced.

Another teaching of the invention provides that the components of the tower are mounted in a helix. It is preferred that the helix is a single helix or a multiple helix.

Another teaching of the invention provides that the upper joints of the individual components of a helix have either a continuous line or a gradation.

A further teaching of the invention provides that the components in the joints have slots which are arranged transversely to the impact direction. In these slots connecting means are introduced, which are preferably metal sheets, in this case particularly preferably perforated sheets, is. Another teaching of the invention provides that these connecting elements are inserted and glued into the slots or openings. In addition, the butt holes can be taped with, for example, a tape or Plexiglas. Preferably, the introduction of the adhesive takes place by spraying the spaces between the component and the connecting element. Alternatively, wooden parts or wooden dowels can be used if the components are wood elements. These fasteners are on the one hand cost-effective elements, however, provide the necessary strength in terms of thrust or thrust loads between the individual components. With regard to the tower, the object of the invention is achieved in that the tower for a wind turbine is provided with a coating from the surface of the outside of the tower, which receives at least a portion of the tensile loads acting on the surface and the surface of the outside of the tower against the external influences on the surface, in particular moisture, seals. With respect to steel towers, such a coating makes it possible to reduce the amount of steel required in terms of tensile loads, since the coating absorbs tensile loads while at the same time saving the coat of the steel elements. With regard to concrete towers it is possible to reduce the concrete cover over the steel framework, so that a cost reduction arises. With regard to wooden towers, the coating makes it possible to use wood-based materials and their bonding agents which have only an approval for interior work.

An advantageous teaching of the invention provides that the coating on the surface of the outside of the tower is at least partially applied over the entire surface. The coating is a laminate, a film, a fabric and / or a textile or a plate. These are preferably made of plastic, which is particularly preferably a plastic made of polypropylene, polyethylene and / or polyurethane. Such materials are able to absorb tensile stresses and at the same time provide a seal and thus a seal against the environmental influences acting on the surface of the tower. At the same time, such materials have lower basis weights than, for example, paints on the surface of the tower, so that this weight can be reduced in the construction in terms of static pressure load, whereby the tower construction can be made slimmer overall. At the same time, the cost of these materials, for example, compared to paints, lower.

Another teaching of the invention provides that the coating is adhered at least partially on the tower surface. Preferably, the coating consists of individual sections which are connected to each other, wherein the bonding is preferably done by gluing or welding. Bonding ensures that the static load is absorbed by the coating.

A further teaching of the invention provides that the tower is at least partially constructed of steel, concrete, in particular reinforced concrete and / or wood. The wood is preferably cross-laminated timber and / or wood composite material.

Another teaching of the invention provides that the coating in wood has a lower vapor permeability than the wood. In this way, the diffusion is reversed, i. H. that the vapor permeability of the tower does not become larger towards the outside, but to the inside. In the interior of the tower, a heat generator is furthermore preferably arranged, which is preferably the power electronics of a wind power plant. Due to the heat generation, the moisture inside the tower is removed upwards and the moisture escaping from the wood is moved towards the inside of the tower and also removed. If the coating is damaged, the moisture is transported away to the inside. The moisture in the particles and minerals gradually closes the damage to the coating, while still ensuring that the moisture escapes inwards.

Another teaching of the invention provides that the support structure of the tower is at least partially constructed of materials that are not suitable for outdoor use. These are materials that have been approved for indoor use only in the construction of buildings. By applying the coating, it becomes possible to do so

Use materials and also connecting means for the support structure of a tower for a wind turbine, because the coating the state of

Interior use of materials guaranteed.

According to another teaching of the invention, the tower is composed of individual components on site. For the individual components are preferably flat elements. By such a composition of the tower of individual flat elements ensures that the transport cost of the individual towers is significantly reduced.

Another teaching of the invention provides that the constituents are composed into a helix, this being preferably a single helix or a multiple helix. The upper abutment faces of the individual components preferably have a continuous line or a step.

A further teaching of the invention provides that the components in the joints have slots which are arranged transversely to the impact direction and / or along the direction of impact. Preferably, in the slots connecting means are used, which are preferably metal sheets, particularly preferably perforated sheets, which are preferably glued. In addition, the butt holes can be taped with, for example, a tape or Plexiglas. Preferably, the introduction of the adhesive takes place by spraying the spaces between the component and the connecting element. Alternatively, wooden parts or wooden dowels can be used if the components are wood elements. These fasteners are on the one hand cost-effective elements, however, provide the necessary strength in terms of thrust or thrust loads between the individual components.

The invention will be explained in more detail with reference to preferred embodiments in conjunction with a drawing. Showing:

1 is a perspective view of a wind turbine with a tower according to the invention,

2 shows a spatial view of the tower according to the invention,

3: the side by side arranged sides of the tower according to the invention, 4 shows an alternative embodiment of the tower according to the invention,

5 shows an alternative embodiment of the tower according to the invention,

6 shows an alternative embodiment of a tower according to the invention,

7 shows an interior view of the wall elements to Fig. 6,

8 shows a spatial view of a basic element of a further alternative embodiment of the tower,

9 is a perspective view of the construction of a tower of FIG. 8;

10 is a perspective view of a connecting means according to the invention,

11 is a detail view of FIG. 10,

FIG. 12: a completely assembled view of FIG. 10, FIG.

13 shows an alternative connection possibility,

14 is a sectional detail view of FIG. 13,

15 shows an alternative connection possibility,

16 shows an alternative connection possibility,

FIG. 17 is a plan view of FIG. 16; FIG.

FIG. 18 shows a method for applying a coating, FIG.

19 is a side view of a coated tower wall, 20 is a side view of a wall structure according to the invention,

21 shows a side view of an adapter for fastening a nacelle with a tower according to the invention,

FIG. 22 is a plan view of the underside of the connector; FIG.

Fig. 23: a first embodiment of an adapter according to the invention, and

Fig. 24: a second embodiment of an adapter according to the invention.

Fig. 1 shows a wind turbine 30, which consists of a tower 31, which stands on a foundation 32, and a nacelle 33, which is connected via an adapter 35 to the tower 31. On the nacelle 33, which is designed to be horizontally rotatable, a rotor 34 is provided which has rotor blades 36 which are connected in a hub 37 with the nacelle 33.

Hereinafter, various embodiments of the tower 31 are set forth.

According to FIG. 2, the tower 31 has an outer side 38. The tower 31 is designed as a polygon. In the present case it is a hexagon, other polygons such as quadrangle, pentagon, octagon, toenail or dodecagon or larger are also readily possible. The same applies to a circular cross section. The tower 31 according to FIG. 2 has six tower sides 39, which are conical over their entire side. The tower sides 39 are formed from individual wall elements 40, which optionally have a shortened wall element 41 at the bottom and 42 at the top. In the embodiment of FIG. 2, the wall elements 40 are designed as a tapered trapezoid, wherein the individual wall elements can be composed of different sub-elements. The embodiment according to FIG. 2 has a helical structure. This can be seen from Fig. 3, in which the six sides are shown side by side. The individual wall elements 39 are arranged from side to side always offset by a sixth of the wall height upwards to each other, the dimensions of the individual wall elements 40 was taken into account in accordance with the conical inlet of the individual tower sides 39. The six wall elements form a helix section 43. This construction ensures that the seventh following wall element is arranged directly on top of the first wall element and these two wall elements are abutting each other on the impact side. For other polygons, the offset is 1 / n ^* height wall element 40, where n is the number of polygon corners. These requirements also apply to the embodiments of the tower structure according to FIG. 4 and FIG. 5.

According to the embodiment of Fig. 4, the tower 31 also has a simple helical structure. The illustrated towers in turn have six sides and each side has a lower and an upper terminating element, possibly as a shortened wall element 41, 42. The individual wall elements therebetween are tapered, the lower and upper side of the shock, although parallel to each other, but at an angle α are designed inclined with respect to the foundation side upwards. However, the angle α is advantageously chosen so that it corresponds to 360 ° by the number of sides, so that in turn the N + 1 wall element can again be arranged on the first wall element of a helix section 43 in the case of N sides. The lower and upper sides of the joints of the wall element 40 form a continuous line 56.

The embodiment according to FIG. 5 also represents a simple helical arrangement, wherein the embodiment of FIG. 5 differs from the embodiment of FIG. 4 in that the upper and lower sides of the wall elements 40 have three sections, which is one first rising

Section 57, a subsequent horizontal section 58 and a second rising section 59 is. Overall, this in turn forms a continuous line 56, the slope, however, changes, based on the individual wall elements.

Fig. 6 shows another embodiment of a tower 31 according to the invention. The construction of this tower comprises a multiple helix. The tower is built in Shape of a basic element 53, which rests on a foundation 32. On the base 53 tower elements 54 are placed. The tower is terminated by a closing element 55, on which then the nacelle 33 or the adapter 35 is arranged. The base element 53 has a plurality of shortened wall elements 41. The number of shortened wall elements 41 in the base element 53 indicates the number of helix strands screwed together. If six shortened wall elements 41 are arranged in the base element 43, this means that six helical screw threads have been twisted into one another.

In the illustration according to FIG. 6 and FIG. 7, the wall elements 40 are designed as two triangles which are offset by an angle along a line 46. The line 46 is designed as an outer edge 46. The two triangles form part surfaces 44 and 45, as can be seen in FIG. The basic element 53 is shown in FIG. 8. In the current embodiment according to FIG. 8, twelve shortened wall elements 41 are provided in the base element 53, so that a total of twelve helix strands are twisted together. In the embodiment according to FIGS. 8 and 9, however, the wall element is designed as a circular segment 50. The juxtaposing and connecting the individual tower elements 54 to each other or to the base member 53 but regardless of whether the wall elements are designed as a bent element or as a circular segment element, the same. The individual tower elements 54 are either preassembled with an intermediate plane 52, as shown in FIG. 9, placed on the underlying tower element 54 or base element 53, or mounted individually.

A type of connection of the individual wall elements 40 to each other is shown in Fig. 7. The two contacting in the assembled state abutting surfaces 47 are connected to a connecting means, for example, adhesive in wood elements. For steel elements, welding the joints is a good option. In addition, the abutment surfaces can be provided with recesses 48, which are not provided over the entire width of the abutment surface 47, but end before piercing the outer wall side 38. In Fig. 7, the inner side 51 of the tower wall is shown, so that the recesses 48 are visible. In the recesses 48 Connecting means 49 are used and these are then connected to the wall elements 40. The connecting means 49 may be dowels or metal plates or sheets. The bonding is done, for example, with adhesive, which is injected into the recesses 48. Subsequently, in addition, the outer surfaces of the recess, for example, with adhesive tape or the like., Covered. However, the connection possibilities illustrated in FIG. 7, such as the bonding of the joints and the provision of recesses and the insertion of connection means, are not limited to the multiple helix embodiment. Such embodiments can also be used in the single-helical forms as shown in FIGS. 2 to 5.

Hereinafter, several connection possibilities of the wall elements to each other are shown in Figs. 10 to 17.

The connection of the wall elements 40 with each other can be done in various ways. In each case recesses 48 are provided, are used in the connecting means 49. These connection means are then connected to the wall elements, for example by gluing or the like, to create a holding operative connection. This active compound can then absorb shearing movements and the like or the resulting stresses. A further variant is shown in FIG. 10, wherein triangular or wedge-shaped recesses 48 are provided in the wall elements 40. On the abutment surfaces 47 of the wall elements 40 adhesive can be applied. The same applies to the surfaces 64 of the recesses 48. The connecting means 49 is provided as a diamond-shaped cuboid in the form of a dowel 61. If wood is used as the material for the wall elements 40, the dowels 61 are also wood dowels. These dowels 61 can be used either after placing the wall elements 40 on the abutment surfaces 47 in the recesses 48, or the dowels 61 are inserted into the recess 48 of the already mounted wall element 40 and the overlying wall element is provided with the recesses provided there on the dowel 61 placed and then arranged in total on the abutment surface 47 and by gluing or similar bonding method locked. The bonding is shown in FIG. 11 as adhesive 60. A further illustration of the wooden dowels 61 is shown in FIG. 12.

FIGS. 13 and 14 show the connecting form of the sheet-metal elements in slots already torn for FIG. 7. In the embodiment according to FIG. 13, recesses 48 are provided in the wall elements 40 in the form of slots which are embedded in the abutment surface 47 but are not fully continuous until they pass from the inside 51 to the outside 38, but a residual wall element 65 remains In the slots 48 perforated plates 62 are used. On the abutment surfaces 47, in turn adhesive is applied and the next wall element 40 is placed with its recess 48 on the wall on the perforated plates 62. Alternatively, in turn, the wall elements can be placed on each other and the perforated plates are inserted into the then existing recesses 48 and, as shown in Fig. 14, glued with adhesive 60. Subsequently, the end face of the perforated plates can in turn be covered with an adhesive tape or other suitable covering means. This serves u. a. also as corrosion protection.

Another embodiment of the connection option is shown in FIG. 15. In this case, the abutting surfaces along the surface with recesses 48 in the form of grooves 63 parallel to the outside 38 and 51 inside of the

Wall element 40 provided. In these grooves 63 are springs 64 as

Connecting means 49 used. The fastening of the springs 63 in the grooves 64 by means of adhesive 60. The grooves 64 of the then to be arranged thereon wall member 40 are placed on the springs 63. Another

This embodiment is shown in FIGS. 16 and 17. Here are also provided in the abutting surfaces 47 of the wall elements 40 recesses 48 in the form of a parallel to the outside 38 and inner side 51 of the wall member 40 extending slot. In the slots 48 elongated plates 66 are used as connecting means 49 and also glued together. A

Top view of the abutting surfaces 47 of the wall element 40 with inserted metal sheets

66 shows FIG. 17. FIG. 18 illustrates the application of a coating 69 to a wall element 40. For this purpose, an adhesive device 67 is provided, which sprays the adhesive 60 onto the outside of the tower 38 of the wall element 40. After spraying the coating 69 is applied directly, which is provided as a roller 68. The coating 69 is unrolled from the roll 68 on the surface wetted with adhesive and thus applied to the surface of the wall member 40. The application can be carried out after the erection of the tower 31 on the individual tower sides 39. Alternatively, prior to the construction of a single wall element, each individual wall element can be directly coated, or the coatings can be done after the single wall element has been attached to the tower, so that the coating of the wall elements takes place individually in the installed state. After applying the coating 39, the joints of the coating (not shown) are connected to each other, so that a continuous, entire enclosure of the tower 31 is formed by the coating 69. The finished coated state is shown in FIG.

FIG. 20 then shows the operating state of the wind turbine 30 and the prevailing vapor pressure gradient, represented in the form of the moisture movement 71 and the removal of moisture by the heat removal 72. The coating 69 has a lower vapor permeability than the material of the wall element 40. This is particularly necessary in the use of wood, because it ensures that any moisture passing through the coating 69 is removed from the transition region coating to wood and also from the wood construction as such. The heat removal 72 influences the climatic conditions within the tower so that there is a water vapor gradient from outside to inside. The moisture collecting on the surface of the inner side 51 of the tower 31, which has passed through the wall element 40, is entrained by the rising heat and is removed therefrom from the tower 31. The resulting water vapor rises and escapes from the tower. Alternatively or additionally, a suction of the water vapor can be provided. There is thus a temperature gradient such that the outside temperature is lower than the temperature inside the tower 31. Since the connections for gondolas 33 are essentially circular-segment-shaped with respect to the towers 31, an adapter 35 according to the invention is proposed, which allows a transition of the polygonal tower 31 to the circular segment-shaped connection of the gondola 33. For this purpose, a side wall 76 is provided, at the lower end of a flange 73 is provided which has holes 74. The flange 73 is centrally provided with an opening 75. The flange 73 serves to be placed on the polygonal abutment surface 47 of the uppermost portion of the tower 31 and to be connected by the holes 74 with the tower. At the upper portion of the side wall 46 connecting portions 74 are provided for the gondola 33. Optionally, to achieve better bearing capacity of the sidewall 76, a reinforced portion 78 may be provided on the sidewall 76.

LIST OF REFERENCE NUMBERS

30 Wind Turbine 59 rising section

31 tower 60 glue

32 foundation 61 stirrups

33 gondola 62 perforated plate

34 rotor 63 groove

35 adapter 64 spring

36 rotor blade 65 residual area

37 scar 66 tin

38 Tower outside 67 Glue device

39 Tower side 68 Roller

40 wall element 69 coating

41 shortened wall element 70 heat dissipation

42 shortened wall element 71 moisture movement

43 Helix section 72 Heat dissipation

44 Part surface 73 Flange 5 Part surface 74 Bore 6 Edge 75 Opening 7 Impact surface 76 Sidewall 8 Recess 77 Gondola connection 9 Connecting means 78 Reinforced section

50 circle section 1 tower interior side 2 intermediate plane 3 basic element 4 tower element 5 end element 6 continuous line

57 rising section

58 horizontal section

Claims

claims

A method of constructing a tower for a wind turbine, in which at least partially a coating is applied to the outer surface of the tower, characterized in that the coating is applied so that the coating absorbs tensile loads acting on the outer surface of the tower and that the coating seals the outer surface of the tower against external influences on the surface, in particular moisture, from the outside.

2. The method according to claim 1, characterized in that the coated portion of the tower is completely covered by the coating.

3. The method according to claim 1 or 2, characterized in that a laminate, a film, a plate, a fabric and / or a textile is applied as a coating.

4. The method according to claim 1, wherein the coating is a plastic, preferably polypropylene, polyurethane, polyvinyl chloride, polyester, polycarbonate or polyethylene.

5. The method according to any one of claims 1 to 4, characterized in that the coating is applied after erection of the tower.

6. The method according to any one of claims 1 to 4, characterized in that the coating is applied during the construction of the tower.

7. The method according to any one of claims 1 to 4, characterized in that the coating before the erection of the tower, preferably on site, is applied.

8. The method according to any one of claims 1 to 7, characterized in that the coating is made of individual sections, which are joined together after application.

9. The method according to any one of claims 1 to 8, characterized in that the coating is applied directly to the components of the tower.

10. The method according to claim 9, characterized in that the application takes place by gluing.

11. The method according to any one of claims 1 to 10, characterized in that the tower is at least partially constructed of steel, concrete, in particular reinforced concrete, and / or wood.

12. The method according to claim 11, characterized in that the wood is cross-laminated timber and / or wood composite materials.

13. The method according to claim 11 or 12, characterized in that the coating has a lower vapor permeability than the wood.

14. The method according to any one of claims 1 to 13, characterized in that heat is generated in the interior of the tower, wherein preferably the heat is generated by the power electronics arranged in the tower.

15. The method according to any one of claims 1 to 14, characterized in that the supporting structure of the tower is at least partially constructed of materials that are not suitable for outdoor use.

16. The method according to any one of claims 1 to 15, characterized in that the tower is composed of individual components on site.

17. The method according to claim 16, characterized in that it is surface elements in the individual components.

18. The method according to claim 16 or 17, characterized in that the parts are mounted in a helix.

19. The method according to claim 18, characterized in that a single helix or a multiple helix is present.

20. The method according to claim 18 or 19, characterized in that the upper abutment sides of the components of the helix have a continuous line or a gradation.

21. The method according to any one of claims 1 to 20, characterized in that the components are provided in the joints with slots which are arranged transversely to the impact direction and / or along the direction of impact.

22. The method according to claim 21, characterized in that in the slots connecting means, preferably metal sheets, more preferably perforated plates, introduced, preferably glued, are.

23 tower for a wind turbine with a coating on the surface of the outside of the tower, which receives at least a portion of the force acting on the surface of the tower tensile load and the surface of the outside of the tower against the external influences on the surface environmental influences, in particular moisture, seals.

24. Tower according to claim 23, characterized in that the coating is applied to the surface of the outside of the tower at least partially over the entire surface.

25. Tower according to claim 23 or 24, characterized in that it is the coating to a laminate, a film, a fabric, a plate and / or a textile.

26. Tower according to one of claims 23 to 25, characterized in that it is the coating to a plastic, a plastic plate, a fabric and / or a textile made of plastic, preferably made of polypropylene, polyurethane, polyvinyl chloride, polyester, polycarbonate or polyethylene are made.

27. Tower according to one of claims 23 to 26, characterized in that the coating is at least partially adhered to the tower surface.

28. Tower according to one of claims 23 to 27, characterized in that the coating consists of individual sections which are interconnected, preferably glued or welded.

29. Tower according to one of claims 23 to 28, characterized in that the tower is at least partially constructed of steel, concrete, in particular reinforced concrete, and / or wood.

30. Tower according to claim 29, characterized in that it is the timber is cross-laminated timber and / or wood composite material.

31. Tower according to claim 29 or 30, characterized in that the coating has a lower vapor permeability in wood than the wood.

32. Tower according to one of claims 23 to 31, characterized in that a heat generator is arranged in the interior of the tower, which is preferably the power electronics of a wind turbine.

33. Tower according to one of claims 23 to 32, characterized in that the supporting structure of the tower is at least partially constructed of materials that are not suitable for outdoor use.

34. Tower according to one of claims 23 to 33, characterized in that the tower is composed of individual components on site.

35. Tower according to claim 34, characterized in that it is flat elements in the individual components.

36. Tower according to claim 34 or 35, characterized in that the constituents are assembled into a HeNx.

37. Tower according to claim 36, characterized in that the components are assembled into a single helix or a multiple helix.

38. Tower according to claim 36 or 37, characterized in that the upper abutment sides of the individual components have a continuous line and / or a gradation.

39. Tower according to one of claims 23 to 38, characterized in that the components in the bumps have slots which are arranged transversely to the impact direction and / or along the direction of impact.

40. Tower according to claim 39, characterized in that in the slots connecting means, preferably metal sheets, particularly preferably perforated plates, arranged, preferably glued, are.

41. Wind power plant with a tower according to one of claims 23 to 40.