DE102010012408A1 - Carriage assembly for component i.e. transformer, of wind energy plant, has support device arranged with component and mounted as separate component on carrier device that is positioned on base plate - Google Patents

Abstract

The assembly has a support device (50) for supporting a component (100) i.e. transformer, of a wind turbine plant. A carrier device (5) is attached to the supporting device with which predetermined distance is made between the supported component and an upper limiting surface of a base plate i.e. oil sump, of the wind energy plant. The support device arranged with the component is mounted as a separate component on the carrier device that is positioned on the base plate. The carrier device comprises a frame for accommodating the component resting upon the base plate. Independent claims are also included for the following: (1) a wind energy plant comprising a tower provided on a base plate (2) a method for constructing a wind energy plant.

Description

The invention relates to a carrier arrangement for at least one installation part of a wind energy plant, such as a transformer, inverter o. The like. With a designed for supporting the at least one plant support device support and one of the support means associated carrier device, with a predetermined distance between the supported by the support means An investment part and an upper boundary surface of a foundation or bottom plate of a wind turbine can be produced, equipped with such a carrier assembly wind turbine and a method for building a wind turbine using such a carrier assembly.

Wind turbines usually have a tower erected on a base plate or foundation plate, a gondola mounted rotatably with respect to the tower axis extending substantially in the direction of gravity and a rotor rotatably mounted on the gondola with respect to a rotor axis usually extending approximately in the horizontal direction. The rotational movement of the rotor caused by the wind is converted into electrical energy by means of a generator usually arranged in the nacelle. The electrical energy generated in this way is processed by means of transformers and converters so that it can be fed into the power grid. The transformer, inverter or other equipment may be placed outside the nacelle within the tower. In this case, usually a multi-storey arrangement of plant components is used in the tower, for example, a transformer can be arranged at a distance above the bottom plate, so that below the transformer also an oil pan o. The like. Can be placed. In this case, the distance between the transformer and the bottom plate is usually chosen so that access to the sump below it is readily possible, ie at a height of 2 m or more above the bottom plate. For this purpose, in addition to the support means for the transformer also a support means is needed, which ensures the desired distance between the support means and the bottom plate. In the EP 1 381 7 75 B1 an assembly of corresponding wind turbines is proposed, in which the carrier assembly is placed together with the equipment parts before erection of the tower on the tower foundation. However, the assembly of a wind energy plant described in the cited document also entails considerable transportation and time expenditure for the individual plant components.

In view of these problems in the prior art, the object of the invention is to provide a carrier arrangement for at least one installation part of a wind energy plant, which allows a simplification of the construction of the wind turbine to specify a wind turbine equipped therewith, and a method for erecting a wind turbine using such a wind turbine To provide carrier assembly.

With regard to the carrier assembly, this object is achieved by a development of the known carrier arrangements, which is characterized essentially by the fact that the support means, possibly with the system part arranged thereon as a separate component on the already positioned on the bottom plate support means is mountable.

Due to this modular structure of the carrier arrangement, it is possible to initially transport the carrier device as such to the installation site and to position it on the base plate or foundation plate of the wind energy plant. The transport and the positioning of the support means on the bottom plate prepares no difficulties, because the support means can be relatively easily performed with a weight of only a few hundred kilograms and a small height of less than 3 m, in particular less than 2.5 m, so that it can be easily transported and easily moved on the bottom plate and aligned horizontally in the desired position. Only then, the support device designed as a separate module is optionally mounted with already pre-assembled part of the system, such as a transformer on the support means. Therefore, it is possible to pre-assemble the plant part, such as the transformer in a manufacturing plant so that it can be transported together with the support device to the installation site of the wind turbine and then placed together with the support means in the desired position on the support means. Overall, thereby the construction of wind turbines is significantly simplified, whereby the logistical requirements in connection with the construction of wind turbines are reduced, because plant parts can be transported together with appropriate support devices to the site and placed there on existing carriers.

The bottom plate of wind turbines may have unevenness that may affect the vertical orientation of the plant components to be supported thereon. Therefore, it has proven to be expedient if the carrier device has at least one support region designed for supporting the support device, the height of which above the upper boundary surface of the base plate can be adjusted after the carrier device has been positioned thereon. With the help of appropriate support means, can vertical alignment or the compensation of unevenness on the base plate are already effected before discontinuation of the support device with an optionally already pre-assembled part of the system by first the support areas are aligned in the desired plane. Then, the support device can be placed on it without affecting the unevenness of the bottom plate, the orientation of the support device with it possibly preassembled part of the system in a desired horizontal plane.

The vertical adjustment of the support regions can be realized particularly easily if at least one support region is associated with a threaded, in particular female adjustment whose position relative to the upper boundary surface of the bottom plate after discontinuation of the support means thereon by screwing to a support member associated, in particular by a threaded rod formed counter thread is adjustable. In this case, the threaded rod usually extends in the direction of gravity, so that the height of the adjusting element can be adjusted via the bottom plate by a screwing movement of the adjusting element with respect to the fixed counter-thread. By a suitable choice of thread pitch and dimensions of the thread ridges it can be achieved that the adjusting element allows secure support of the carrier area thereon, wherein the vertical position of the adjusting element is no longer prevented even under the action of a load acting on the carrier area. For this purpose, M24 to M42 threads with a thread pitch of P = 2.5 and a strength class 10.9 are expediently used.

With regard to a stable and at the same time weight-saving design, it has proven to be expedient if the carrier device has a frame in which a resting on the bottom plate plant part, such as an oil pan is added. The part of the plant accommodated in the frame is accessible through the frame. At the same time, the frame supports a desired orientation of the resting on the bottom plate part of the plant in a determined by the bottom plate horizontal plane. The frame can be made particularly stable if it has at least one, preferably three, in particular four arranged at the corners of a rectangle, extending approximately perpendicular to the upper boundary surface of the bottom plate, in particular designed with a double-T profile support elements. In this case, a stable positioning of the support device on the support device can be achieved by utilizing the special properties of double-T profiles, when the upper ends of the support elements associated with the mating thread of the adjusting thread is associated. This thread can be realized by a threaded rod. The threaded rod can be defined with respect to the support element in a particularly simple manner, if at the upper end of at least one support element of at least one designed for receiving the threaded rod recess interspersed and is preferably arranged approximately in a horizontal plane extending flange.

The threaded rod for providing the counter-thread for the adjustment can be releasably fixed with respect to the flange when the flange is clamped between two threaded nuts screwed onto the threaded rod. This fixation of the threaded rod with respect to the attached to the upper end of the support member flange also allows a height-adjustable fixing the threaded rod with respect to the flange.

For height-adjustable mounting of the support device on the support means, the support means can rest at least indirectly on the adjusting element mounted vertically adjustable. Similar to the fixation of the threaded rod with respect to the flange, it has proven to be expedient if the adjusting element has a screwed onto the threaded rod threaded nut. Thereby, the accuracy of the height adjustment is improved because a rotation of the setting element designed as a threaded nut with a thread pitch corresponding reduction is converted into an axial movement of the adjusting element with respect to the threaded rod. The support region used for supporting the support means may comprise a, in particular flange-like support plate interposed by the threaded rod and on which the adjusting nut forming the adjusting element. The height of the support plate above the floor can be adjusted by turning the threaded nut or the adjusting element supporting it. In order to obtain a frame which is as stable as possible, the carrier elements of the carrier device can be connected to one another via at least one, preferably four or more transverse struts extending transversely thereto. The cross braces may also have additional positioning aids for positioning the recorded between the cross braces plant parts. The positioning aids may for example be realized in the form of extending approximately in the direction of gravity additional struts. In this case, these additional struts in a horizontal plane may have an L-profile-shaped cross section and be realized, for example in the form of an angle steel.

To support on the preferably realized in the form of carrier plates support portions of the support means, the support means at least one preferably of the Threaded through threaded rod and resting on the support area support area, such as having a preferably flange-like support plate. In this case, this support region may be formed at the lower end of a support member, which is supported starting from a supporting part, such as a support plate, preferably approximately vertically downwardly extending, in particular approximately coaxially to at least one support element. In this way, an arrangement is achieved in which the support means can be stored resting on the support legs, while the support feet can be used simultaneously for positionally secure mounting of the support means on the support means. For positionally secure fixing of the support device with respect to the support device, a locking nut screwed onto the threaded rod of the support device and resting on an upper boundary surface of the support region facing away from the support region may be provided. In the carrier arrangements described above, the respective flanges may also be penetrated by two, three or more recesses so that the fixing of the support flanges by means of two, three or more threaded recesses passing through the recesses can take place. In this way, a rotationally secure fixation of the flanges is achieved. Furthermore, the introduced via the threaded rod in the bottom plate force can be distributed to a plurality of threaded rods, so that the load of the individual threads or threaded nuts distributed accordingly.

As can be deduced from the above explanation of carrier arrangements according to the invention, a wind energy installation according to the invention has a base plate, a tower erected on the base plate and a carrier arrangement according to the invention which is circumscribed by the tower shell.

The assembly of the wind turbines according to the invention can be carried out so that first the support means of the support assembly placed in a desired position on the bottom plate and then the support device is optionally mounted with a pre-assembled thereon system part on the support means.

In this assembly, the positionally correct arrangement of the support device can be facilitated if at least two arranged on the bottom plate markings and at least two attached to the carrier assembly positioning elements are mounted, the markers and the positioning elements in the vertical direction are aligned one behind the other, as soon as the carrier assembly or the carrier device in the correct position is arranged on the bottom plate. This aspect of the invention may be used to advantage regardless of the design of the carrier assembly. It allows the positionally correct arrangement of the support assembly without complex surveying work, provided that appropriate markings and positioning elements are provided.

An inventive method for building a wind turbine is essentially characterized in that a carrier assembly according to the invention mounted on a base plate and then a tower with a carrier assembly rotating tower shell is erected on the bottom plate. In this case, we achieved by the inventively provided assembly sequence a significant ease of installation in the construction of a wind turbine because the bottom plate is freely accessible before the tower is built, thus allowing easy mounting of the support assembly.

In this case, a carrier device is preferably first positioned on the bottom plate for mounting the carrier assembly, and then the supporting device is preferably mounted thereon, at least with a system part supported thereon and preassembled on the supporting device. According to the invention, the positioning of the carrier device can take place with the aid of markings provided on the base plate and positioning elements attached to the carrier arrangement. Then, for positioning the support means, positioning members on the support means are aligned with respect to the mark on the bottom plate so as to be aligned with each other in the direction of gravity. The vertical orientation of the support device, or of the system parts mounted thereon, can be ensured in a particularly simple manner prior to assembly of the support device if at least two support regions of the support device are aligned in a common horizontal plane prior to assembly of the support device. Thus, the vertical orientation of the support device with system parts preassembled thereon without weight loading of the corresponding adjustment elements by the plant part to be supported is possible and remains after loading the height-adjustable adjusting elements.

The invention will be explained with reference to the drawing, to which reference is expressly made with respect to all essential to the invention and in the description unspecified highlighted details. In the drawing shows:

1 a schematic representation of a carrier assembly according to the invention,

2 an explosive detail of the carrier assembly according to 2 .

3 a horizontal sectional view of the carrier assembly according to 1 .

4 a view of the carrier assembly according to 1 , and

5 a representation serving to explain inventive method representation.

In the 1 shown carrier assembly essentially comprises a carrier device 5 with a supporting device mounted thereon 50 , The support means comprises four arranged at the corners of a rectangle (see. 3 ) Carrier elements 10 , The support elements extend substantially in the direction of gravity. They have at their lower ends on flange-like stand areas with which they stand up on the upper boundary surface of a bottom plate of a wind turbine. As in 3 is recognizable, have the support elements 10 a substantially double-T-shaped cross-section. At the upper ends of the support elements 10 are also flange extensions 12 provided, which at radially outside the Trägererlemente 10 lying places of recesses 12a are occupied (cf. 2 ). The recesses 12a take in the assembled state threaded rods 14 on. This is the flange-like extension 12 between two on the threaded rod 16 screwed thread nut 22 and 24 trapped, as in 2 shown schematically. The threaded rod and the threaded nuts can be made with a M30 thread.

Each of the flange extensions 12 is in the assembled state of two or more, in particular at least three threaded rods 16 interspersed in the in 1 shown mounted state also extend approximately in the direction of gravity. Above the nuts 24 attached to the upper boundary surface of the flange extension 12 abut, are more threaded nuts 3 on the threaded rod three 16 screwed. On these threaded nuts 30 lower boundary surfaces are supported by plate-shaped support areas 20 from. The plate-shaped support areas 20 become of recesses 20a enforced, whose arrangement of the arrangement of the recesses 12a in the flange extensions 12 equivalent. In the assembled state, the recesses 20a in the carrier areas 20 from the threaded rods 16 interspersed, wherein the plate-like support areas 20 on the threaded rod 16 screwed threaded nuts 30 rest. By turning the threaded nuts 30 can be the vertical position of the carrier areas 20 to adjust.

The support device 50 has a plate-shaped support arrangement in the illustrated embodiment of the invention 52 on which, for example, a converter can be mounted. Starting from the support device 52 feet extend 54 the support assembly down, which at their lower ends flange-like support areas 56 exhibit. The support areas 56 are also approximately plate-shaped and have outside the feet 54 recesses 56a whose geometric arrangement is approximately the geometric arrangement of the recesses 12a in the flange extensions 12 and the recesses 20a in the support area 20 correspond. In the assembled state, the recesses 56a the support areas 56 from the threaded rods 16 interspersed. In this state, the present example, in the form of an inverter system part is based 100 over the support arrangement 52 , the feet 54 , the support areas 56 , the carrier areas 20 , the threaded nut 30 , the threaded rod 16 and the carrier elements 10 respectively. 12 on the bottom plate of the wind turbine.

How special in 3 can be seen, the support means 5 a in a horizontal section plane substantially rectangular frame, whose vertical edges by the support elements 10 are formed. The carrier elements 10 are about striving 30 connected with each other. It can between the individual support elements 10 two or more struts 40 be arranged. In the illustrated embodiment of the invention, the struts 40 turn, in turn, about about horizontally extending struts 42 connected with each other. In this case, two or more struts can be stacked in a vertical plane between the struts 40 be arranged. As in 3 is recognizable, are on the struts 42 positioning aids 54 arranged in the form of extending approximately in the direction of gravity L-profiles. The L-profiles 54 are so at the pursuit 42 fastened that between the struts 42 delimiting a rectangular in a horizontal sectional plane receiving space in which other parts of the system can be added, which can be supported on the upper boundary surface of the bottom plate, such as resting on the bottom plate oil pan. Is in 4 shown.

Below is the mounting of wind turbines according to the invention according to the inventive method with reference to 1 and 5 explained. In a first step, the carrier device 5 placed on the upper boundary surface of a floor or foundation plate of a wind turbine. To facilitate the positioning of the support means are to the struts 40 and 42 annular positioning aids 40a and 42a attached, which are aligned during assembly so that they are arranged in the vertical direction with on the upper boundary surface of the foundation plate and not shown in the drawing Markings are aligned. As a result, the desired alignment of the support means on the foundation plate is made possible without additional surveying. The carrier device is designed as a simple frame. It has a weight of a few hundred kilos. It can also be manually pushed on the floor or foundation plate in the desired position.

After reaching the desired position with the help of the positioning elements 40a and 42a as well as the corresponding markings become the carrier areas 20 by adjusting the threaded nuts 30 aligned in a common horizontal plane. This can, for example, a spirit level on neighboring Trägerbreiche 20 be hung up and alignment in a plane by twisting the threaded nuts 30 respectively. In the next assembly step, the support device 50 possibly with already pre-assembled plant element, such as a converter 100 or a transformer on the carrier area 20 discontinued. These are the recesses 12a and 20a penetrating threaded rods 16 through the recess 56a in the support areas 56 passed. In this position, the support areas are based 56 and thus the support means in total on the support areas 20 at the upper boundary surface of the foundation or bottom plate of the wind turbine. By prior alignment of the carrier areas 20 with the help of as threaded nuts 30 running adjusting a desired orientation of the support device is achieved in a horizontal plane. Finally, the support area 56 with a threaded nut screwed onto it from the top 32 locked.

In the described assembly, a desired orientation of the system parts to be supported already before installation of the system parts by means of the carrier areas 20 and the positioning elements 40a and 42a be achieved. This eliminates the need to move heavy equipment parts to a desired position during assembly. Further, the transportability of the carrier assembly is facilitated by the two-part structure of the carrier assembly as a whole. Carrier device and support device can be transported separately from each other and assembled at the installation site. Before mounting the support device on the support device can other parts of the system, such as the oil pan 100 be used in the frame-shaped support means and are positioned with the help of running as L-profile positioning aids in a desired position relative to the frame. After installation of the carrier assembly with the supported part of the plant then the tower 120 the wind turbine to be built on the ground or foundation plate.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1381775 B1 [0002]

Claims (20)

Carrier arrangement for at least one part of the installation ( 100 ) of a wind energy installation, such as a transformer, with a support for the at least one installation part ( 100 ) supporting device ( 50 ) and one of the support means associated carrier device ( 5 ) with a predetermined distance between that of the support device ( 50 ) supported part of the plant ( 100 ) and an upper boundary surface of a bottom plate, a wind turbine can be produced, characterized in that the support device ( 50 ) possibly with the plant part arranged thereon ( 100 ), as a separate component on the already positioned on the bottom plate support means ( 5 ) is mountable. Carrier arrangement, in particular according to claim 1, characterized in that the carrier device has at least one support area designed for supporting the supporting device ( 20 ) whose height above the upper boundary surface of the bottom plate after positioning of the support device ( 5 ) is adjustable to it. Support arrangement according to claim 2, characterized in that the support area ( 20 ) with a threaded, in particular female thread provided adjustment ( 30 ) whose position relative to the upper boundary surface of the bottom plate by screwing with a support element ( 10 ), in particular by a threaded rod ( 16 ), counter thread is adjustable. Support arrangement according to one of the preceding claims, characterized in that the support device ( 5 ) a for receiving resting on the bottom plate plant parts ( 120 ). A support arrangement according to claim 4, characterized in that the frame has at least one, preferably three or more, in particular four arranged at the corners of a rectangle, extending approximately perpendicular to the upper boundary surface of the bottom plate, in particular executed with a double-T-profile carrier element whose upper end is preferably one with the thread of the adjustment ( 30 ) cooperating mating thread ( 16 ) assigned. Support arrangement according to claim 5, characterized in that at the upper end of at least one support element ( 10 ) one of at least one for receiving a threaded rod ( 16 ) recess ( 12a ) penetrated flange ( 12 ) is arranged. Support arrangement according to claim 6, characterized in that the flange ( 12 ) between two on the threaded rod ( 16 ) screwed nuts ( 22 . 24 ) is trapped. Support arrangement according to one of claims 3 to 7, characterized in that the support device ( 50 at least indirectly on the adjusting element ( 30 ) rests. Support arrangement according to one of claims 3 to 8, characterized in that the adjusting element ( 30 ) one on the threaded rod ( 16 ) screwed threaded nut has. Support arrangement according to one of claims 2 to 9, characterized in that the support area ( 20 ) one of the threaded rod ( 16 ) and on which the adjusting element ( 30 ) forming threaded nut resting, in particular flange-like support plate. Support arrangement according to one of claims 5 to 10, characterized in that at least two support elements ( 10 ) via at least one transversely extending transverse strut ( 40 ) are interconnected. Support arrangement according to one of the preceding claims, characterized in that the support device ( 50 ) at least one preferably penetrated by the threaded rod and on the support area ( 20 ) supporting area ( 56 ), such as having a preferably flange-shaped support plate. Support arrangement according to claim 12, characterized in that the support area ( 20 ) at the lower end of a starting from a plant part supporting support arrangement ( 52 ) preferably approximately vertically downwardly extending, in particular approximately coaxially with respect to at least one carrier element ( 10 ) extending support foot ( 54 ) is formed. Support arrangement according to claim 12 or 13, characterized by a threaded rod ( 16 ) screwed on a carrier area remote from the upper boundary surface of the support area ( 56 ) resting locking nut ( 32 ). Wind energy plant with a bottom plate, a tower erected on the bottom plate ( 120 ) and one of the tower shell encircling carrier assembly according to any one of the preceding claims. Wind energy plant, in particular according to claim 15, characterized by at least two markings arranged on the bottom plate and at least two positioning elements attached to the carrier arrangements ( 40a . 42a ), wherein the markers and the positioning elements are aligned with each other in the vertical direction. A method of constructing a wind energy plant, in which a carrier assembly according to one of claims 1 to 14 mounted on a bottom plate of the wind turbine and then a tower with a carrier assembly rotating tower shell is erected on the bottom plate. Method according to Claim 17, in which, for mounting the carrier arrangement, firstly a carrier device ( 5 ) positioned on the bottom plate and then the support device ( 50 ), preferably together with at least one part of the plant supported thereon ( 100 ) is mounted thereon. Method according to claim 18, characterized in that for positioning the carrier device ( 5 ) Positioning elements ( 40a . 42a ) on the carrier device ( 5 ) are aligned with respect to marking on the bottom plate so that they are aligned with it in the direction of gravity. Method according to claim 18 or 19, characterized in that prior to assembly of the support device ( 50 ) at least two carrier areas ( 20 ) of the carrier device ( 5 ) are aligned in a common horizontal plane.

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