Method for providing, transporting and setting up coils of coil assemblies

Abstract

The invention relates to a method for providing coils (2, 3) at a supply site, transporting the coils (2, 3) from the supply site to the construction site, and constructing the coils (2, 3) into a coil assembly (1) at the construction site. A first and a second coil (2, 3) and a transport platform (19) are provided. Then, one of the coils (2, 3) and another coil of the coils (3, 2) coaxial with the one coil are arranged and supported on the transport platform (19). A joint transport is carried out from the supply site to the construction site, at which the coils (2, 3) are removed from the transport platform (19) and at least two of the coils (2, 3) are constructed into the coil assembly (1) on a construction surface (12) preferably oriented horizontally.

Description

Technical Field

[0001] The present invention relates to a method for providing a coil at a supply site, transporting the coil from the supply site to a construction site, and constructing the coil into a coil assembly at the construction site. Background Art

[0002] It has been customary for the applicant to transport such coils or the partial coils of a coil assembly separately and independently of one another, which necessitates increased packaging effort and requires a larger transport space.

[0003] WO2013 / 102231A2 describes the structure and also implicitly describes a method for building at least two coils into a coil assembly on a horizontal construction surface, wherein a second coil of smaller size is structurally arranged on a first coil and the second coil above is supported by the first coil below, or the coils are arranged in each other. By a much more compact structure of the coil assembly (particularly in terms of the space requirement in the vertical direction), transportation costs can be reduced. However, the construction site is not a transport platform for transporting the coils between the provision site and the construction site, but a construction surface at the construction site. This does not involve surfaces that are different from each other.

[0004] EP1595809A1 discloses a method having the following steps: providing coils at a supply site; providing a transport platform for transporting the coils from the supply site to the construction site; and arranging one of the coils on the platform and supporting it on the platform. In addition, at least one other coil is arranged on the platform in a manner coaxially oriented with the firstly arranged coil and supported on the platform (stacked and / or side by side). Then, the coils placed on the platform are transported from the supply site to the construction site and the coils are removed from the transport platform. Here, they are cylindrical coils with end regions, but not coils with winding layers, as they would be used for coil assemblies. However, the outer dimensions of the second coil and the inner dimensions of the first coil are selected so that the second coil cannot be arranged inside the first coil that is already on the platform. Summary of the invention

[0005] The object of the present invention is to overcome the disadvantages of the prior art and to provide a method by means of which the packaging outlay can be kept low and the necessary transport area can also be minimized.

[0006] In the method according to the invention it is provided that the following steps are carried out:

[0007] - providing a first coil having at least one first winding layer, the first coil having a first end region and a second end region spaced apart from the first end region in the direction of a first longitudinal axis, at least one of the end regions being open, and a free core region of the first coil having a clear inner dimension having an inner diameter;

[0008] - providing at least one second coil, the second coil having at least one second winding layer, the second coil having a third end region and a fourth end region spaced apart from the third end region in the direction of the second longitudinal axis, and the second coil having an outer dimension having an outer diameter, the outer dimension being smaller than a clear inner dimension of the first coil;

[0009] - providing a plurality of first support elements for said first coil and / or a plurality of second support elements for said at least one second coil;

[0010] - providing a transport platform for said coil;

[0011] - before placing the coil on the transport platform, arranging the first and / or the second support element on at least one of the coils at their respective end regions, at least one of the coils being supportable on the transport platform by means of at least three of the support elements;

[0012] - placing one of the coils on a transport platform and supporting the one coil in an orientation perpendicular to its longitudinal axis on the transport platform at the provision site;

[0013] - arranging at least one further coil of the coils on the transport platform and supporting the at least one further coil on the transport platform at the provision site, and in this case correspondingly orienting the at least one further coil of the coils in a substantially coaxial position relative to the coil already on the transport platform and arranging the at least one second coil, which is smaller, with its smaller outer dimensions inside the first coil, or arranging the at least one further coil of the coils inside the coil already on the transport platform and supporting the at least one further coil on the coil already on the transport platform;

[0014] - transporting the coil placed on the transport platform from the provision site to the construction site;

[0015] - removing the coils from the transport platform and configuring at least two of the coils to form the coil arrangement on a horizontally oriented building surface, with the first longitudinal axis of the first coil oriented vertically and the second longitudinal axis of the at least one second coil oriented vertically.

[0016] In the method step selected here, it is advantageous that, by redundantly matching the coils relative to one another, the smaller second coil is arranged approximately coaxially inside the first coil with its smaller outer dimensions relative to the smallest clear inner dimensions of the first coil for transport. Thus, on the one hand, packaging material for repackaging for transport is saved and, in addition, the required storage space on the transport means is reduced. Thus, for transport purposes, the coils are arranged compactly inside one another and only one repackaging is provided for at least two coils. In this case, only the total mass of the coils is taken into account and the transport platform is adapted to this in terms of its design and strength. Thus, the total transport volume is reduced, wherein the total transport mass is reduced by omitting the transport packaging.

[0017] Furthermore, a plurality of first support elements for the first coil and / or a plurality of second support elements for the at least one second coil are provided. This makes it possible that at least one of the coils does not have to be placed directly on the transport platform. This better avoids possible damage. However, this also simplifies the lifting process.

[0018] Furthermore, it is provided that before the coil is placed on the transport platform, the first support element and / or the second support element are arranged on at least one of the coils and at least one of the coils is supported on the transport platform by means of at least three of the support elements. By additionally providing a separate support element for the first coil and / or also for at least one second coil, at least one of the coils is itself independently mounted on the provided transport platform and supported thereon in a load-absorbing manner. By the selected number of at least three support elements per individual coil, it is thus possible to achieve a non-tilting and secure support of each of the coils on the transport platform.

[0019] Another advantageous approach is characterized in that the first support element and the second support element are arranged offset relative to each other as viewed in the circumferential direction about the longitudinal axis. By arranging the first support element offset relative to the second support element, a transport arrangement is provided so that mutual collisions can be reliably avoided if the support elements could protrude radially beyond the respective coil. The circumferential offset of the first support element and the second support element only relates to the arrangement relative to each other on the transport platform. For a configuration that is compatible with operation at the construction site, the first support element and the second support element are arranged aligned relative to each other in the radial direction on the respective coil so that mutual support between the first support element and the second support element can be achieved.

[0020] A mode is also advantageous in which the first support element and / or the second support element is fixedly held on the transport platform, in particular fastened to the transport platform. By holding the corresponding support element fixedly on the transport platform, an accidental slipping off of each of the coils can be reliably prevented. The fastening of the individual support elements to the carrier platform can be carried out by very different threaded connections or the like. In the case of the selected threaded connections, these threaded connections extend through at least one support element and are directly screwed to the transport platform or these threaded connections also extend through the transport platform and are provided with a bolt-nut connection.

[0021] Another advantageous approach is characterized in that at least one spacing element, preferably a plurality of spacing elements, is provided and the spacing element or the plurality of spacing elements is arranged in the radial direction between the first coil and the at least one second coil. The spacing element or the plurality of spacing elements between the first coil and the at least one second coil prevents the coils from colliding with one another and facilitates a simpler coaxial orientation of the coils relative to one another.

[0022] Another approach is characterized in that the first supporting element is also arranged at a second end region of the first coil which is spaced apart from the first end region in the axial direction. Thus, a supporting base for at least one second coil can be realized in the second end region of the first coil, so that the coil assembly can be arranged one above the other in the form of a tower structure.

[0023] A method variant is also advantageous, in which the coils are assembled or constructed into the coil assembly in a tower-shaped arrangement of the coils one above the other, and in this case the first coil is first constructed at the construction site and the first end region of the first coil is supported on the construction surface by means of the first supporting element. Thus, a reliable base for supporting the second coil is achieved during construction. Here, the first supporting element can also be supported on the construction surface with an insulator element connected in between. This makes it possible to achieve a spatial spacing of the coil assembly from the construction surface.

[0024] A method variant is also advantageous in which the support element is designed in a fork-shaped manner and comprises a support element base and at least one inner support element fork and at least one outer support element fork, which each protrude from the support element base and are arranged at a distance from one another in order to form a receiving slot. Due to the fork-shaped design of the support element, each coil, in particular its selected winding layer, can thus be received in the corresponding receiving slot and thus be held in a radially positioned manner. The width of the receiving slot between the support element forks is preferably matched to the corresponding radial thickness of the corresponding winding layer in order to ensure, on the one hand, a secure reception and, on the other hand, a virtually immovable positioning relative to the transport platform.

[0025] Another embodiment is characterized in that the first support element is arranged on the at least one first winding layer of the first coil in such a way that the at least one first winding layer is received in a first receiving gap and the at least one inner support element fork is on the side of the at least one first winding layer facing the first longitudinal axis and the at least one outer support element fork is on the side of the at least one first winding layer facing away from the first longitudinal axis, and the first support element base is supported on the transport platform. By configuring the support element forks arranged on both sides and redundantly matching the receiving gap configured therebetween, optimal and reliable positioning of the coil can be achieved according to the matching selection both during transportation and at the subsequent installation site.

[0026] A variant is also advantageous in which the second supporting element is arranged on the at least one second winding layer of the second coil in such a way that the at least one second winding layer is received in the second receiving gap, and the at least one inner supporting element fork is located on the side of the at least one second winding layer facing the second longitudinal axis, and the at least one outer supporting element fork is located on the side of the at least one second winding layer facing away from the second longitudinal axis, and the second supporting element base is supported on the transport platform. The second coil can thus also be reliably positioned on the transport platform independently of the first coil and optionally also held in a fixed position.

[0027] Another advantageous approach is characterized in that the second support element is arranged around the second longitudinal axis at the same interval as the first support element, so that reliable mutual support of the first support element and the second support element respectively assigned to each other can be ensured.

[0028] Another approach is characterized in that coupling elements are fastened to the first supporting element in the second end region of the first coil, the coupling elements being arranged protruding in the direction of the first longitudinal axis. However, coupling elements can also be fastened to the second supporting element of the second coil, the coupling elements being arranged protruding in the direction away from the second longitudinal axis. Nevertheless, the stacking of the coils can also be achieved by arranging coupling elements between each of the first supporting element and each of the second supporting element. The coupling elements are particularly necessary when the base of the first supporting element and the base of the second supporting element are arranged in positions that do not overlap each other in the radial direction as viewed in the axial direction. Depending on the assembly process, the coupling element can be arranged and fastened on the first supporting element and / or also on the second supporting element of the second coil.

[0029] A method variant is also advantageous in which the second coil is arranged to be supported on the first support element with the second support element located thereon and with the corresponding coupling element interposed therebetween, and each coupling element which has not been connected to one of the support elements so far is connected to this support element. Thus, a secure relative connection of the first and second support elements, which are respectively facing or provided with one another and act in cooperation with one another, is achieved.

[0030] Another processing method is characterized in that at least one of the first supporting elements is fixedly connected to the at least one first winding layer of the first coil, and / or at least one of the second supporting elements is fixedly connected to the at least one second winding layer of the second coil. Thus, a stable and firm structure and reliable holding of the individual supporting elements on the corresponding winding layer can be achieved.

[0031] A process is also advantageous in which the second longitudinal axis of the second coil is arranged aligned with the first longitudinal axis of the first coil and the longitudinal axes define a common central longitudinal axis. Thus, the coils can be arranged exactly coaxially and oriented relative to each other one above the other.

[0032] Finally, another advantageous processing method is characterized in that for transporting the coil and / or when assembling or constructing the coil for forming the coil assembly, a slope compensation element is arranged or constructed at least between a first support element of the first support element and the at least one first winding layer and / or at least between a second support element of the second support element and the at least one second winding layer. Thus, a reliable and gap-free contact of at least one winding layer on the respective support element can be ensured despite the winding process having already been carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to better understand the present invention, the present invention is described in detail with reference to the following drawings.

[0034] Respectively in a strongly simplified schematic:

[0035] Figure 1 A simplified diagram showing a coil assembly assembled from coils into a tower;

[0036] Figure 2 A diagram showing a simplified construction of coils assembled into a tower;

[0037] Figure 3 Shown in accordance with Figure 2 A simplified diagram of the first coil below;

[0038] Figure 4 Shown in accordance with Figure 2 A schematic diagram of the second coil viewed from the upper side;

[0039] Figure 5 A schematic diagram showing a support element for supporting up to three winding layers of a coil;

[0040] Figure 6 A schematic diagram showing another support element for supporting a winding layer of a coil;

[0041] Figure 7 A schematic diagram showing one possible arrangement of the coil on the transport platform;

[0042] Figure 8 A further possible arrangement of two coils in relation to one another on a transport platform is shown in a schematic diagram and in a partial sectional view. DETAILED DESCRIPTION

[0043] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0044] The term “particularly” is to be understood below in such a way that it may relate to a possible specific configuration or detailed description of an object or a method step, but not necessarily a mandatory preferred embodiment or mandatory procedure thereof.

[0045] exist Figures 1 to 7 1 and its components are shown in simplified form, comprising a preferably starless lower coil or first coil 2 and at least one upper coil or second coil 3. It is also possible to form the coil assembly 1 by arranging a plurality of coils one above the other to form a coil tower.

[0046] Coils 2, 3 can also be called choke coils, in particular air choke coils and mostly have a considerable mass and the associated large dimensions. Such coils 2, 3 of the coil assembly 1 preferably do not have an iron core. Coils 2, 3 or coil assemblies 1 composed of them are mostly used in the field of medium voltage, high voltage or maximum voltage. Coils 2, 3 together constitute a coil group, which together constitute a coil assembly 1 that has not yet been assembled or combined or a coil assembly 1 that is ready to be combined. However, it is also possible that, by the method described below, a larger first coil 2 and at least one second coil 3 that is smaller than it are arranged inside the first coil 2 and these coils are transported together. These coils 2, 3 can then each form their own independent coils of the coil assembly 1 at the construction site.

[0047] The first coil 2 includes at least one first winding layer 4 , but it may also include a plurality of first winding layers 4 which are arranged concentrically relative to one another. Figure 1 The multiple arrangement of the first winding layer 4 is shown.

[0048] The first winding layer 4 or each first winding layer 4 is preferably configured as a hollow cylinder and is arranged at a distance from each other. If a plurality of first winding layers 4 are provided, these first winding layers are preferably electrically connected in parallel and magnetically coupled. In addition, in the case of a plurality of first winding layers 4, these first winding layers are mostly held at a predetermined distance relative to each other by means of spacers 5. One or more spacers 5 can also be configured as gap bars and are referred to as gap bars. The first coil 2 can form a mostly free core area 6 in its hollow cylindrical inner cavity.

[0049] The second coil 3 also comprises at least one second winding layer 7, which is also preferably designed in a hollow cylindrical manner. However, a plurality of second winding layers 7 arranged concentrically relative to one another can also be provided in order to form the second coil 3. Due to the preferably hollow cylindrical design of the coils 2, 3 or their winding layers 4, 7, a first longitudinal axis 8 is defined by the first coil 2 and a second longitudinal axis 9 is defined by the second coil 3. The longitudinal axes 8, 9 can also be referred to as central longitudinal axes.

[0050] It also provides that: Figure 3 and Figure 4 As can be seen clearly, the clear width or clear inner dimension 10 of the first coil 2, in particular of its first winding layer 4 closest to the first longitudinal axis 8, is selected or designed to be larger than the outer dimension 11 of the second coil 3, in particular of its second winding layer 7 which is arranged farthest from the second longitudinal axis 9. With the winding layers 4, 7 shown here being designed as hollow cylinders, the aforementioned dimensions relate to diameter dimensions with the respective center in one of the longitudinal axes 8, 9. The size difference between the outer dimension 11 (outer diameter) of the second coil 3 and the inner dimension 10 (inner diameter) of the first coil 2 is selected such that the second coil 3 can be arranged inside the first coil 2. Depending on the size and dimensions of the coils 2, 3, the gap between the second coil 3 and the first coil 2 can be a few millimeters up to a centimeter or also a plurality of centimeters or even up to a plurality of decimeters.

[0051] The coil assembly 1 is manufactured and transported mostly directly from a workshop (factory) or a warehouse provided for this purpose to the construction site. The site provided for providing the coils 2, 3 is referred to here as the provision site, where the actions for preparing for transportation and possibly packaging are also carried out. Due to the star-less or core-less construction of at least the first coil 2, the second coil 3 should be accommodated in its free core area 6 inside the first coil 2 at least for the common transportation of the coils 2, 3 until their construction or assembly. This will be described in detail below.

[0052] In the coil assembly 1, in particular, in the position of the coils 2 and 3 that are completed and can be put into use, different arrangements can be selected relative to each other. In principle, the construction is carried out at a construction site, which has or is constructed with a construction surface 12 that is mostly horizontally oriented. The construction surface 12 is preferably formed by a plane (standing plane) and can be realized in particular by the ground or building ground and / or foundation. In addition, the two longitudinal axes 8 and 9 should be preferably aligned relative to each other when the coils 2 and 3 are stacked in a tower shape and form a common central longitudinal axis 13. In order to support the first coil 2 on the construction surface 12, a simplified first support element 14 is provided. According to the structure of the coil 2 and the number of the first winding layers 4, the first support element 14 can be matched thereto. The first support element 14 is preferably arranged in the region of the first end region 15 and also in the region of the second end region 16 of the first coil 2. The first end region 15 faces the construction surface 12. The second end region 16 is arranged opposite to the first end region 15 in the axial direction and thus faces the second coil 3.

[0053] In the embodiment shown here, it is provided that the first coil 2 is supported on the building surface 12 by means of at least three of the first supporting elements 14, optionally with interposed insulating elements, and forms a support base at least for the second coil 3. The two longitudinal axes 8, 9 of the coils 2, 3 have essentially a normal orientation relative to the building surface 12. When the building surface 12 is oriented horizontally, the longitudinal axes 8, 9 are oriented vertically.

[0054] In the arrangement of the coils 2, 3 which is selected here to overlap one another, at least the second coil 3 is placed on the side of the first coil 2 which faces away from the construction surface 12, i.e., on the second end region 16. This results in a tower-shaped design of the coil assembly 1. In order to support the second coil 3 on the first coil 2, a second support element 17 is provided for the second coil 3.

[0055] In order to bridge the respective radial distances resulting from the above-described size differences between the first coil 2 and the second coil 3, a coupling element 18 is provided between the first support element 14 and the second support element 17 coupled thereto. The respective coupling element 18 is preferably designed in the form of a plate or a flat profile.

[0056] For simplicity and clarity, Figure 2 The illustration of exemplifies that each of the coils 2 , 3 comprises only one winding layer 4 , 7 . However, each of the coils 2 , 3 may also comprise a plurality of winding layers 4 , 7 .

[0057] In order to transport the coils 2, 3 from the supply site to the construction site, a transport platform 19 is provided, on which the coils 2, 3 are placed and then transported. The transport platform 19 can be designed arbitrarily and can be realized, for example, in the form of a plate, a pallet or the like. Figure 7 A possible arrangement is shown in FIG.

[0058] After placement, a box-like partition can be arranged on the transport platform 19 to protect the coils 2 and 3. In order to place each coil 2 and 3, the support elements 14 and 17 described above are provided. At least three support elements 14 and 17 are required for each coil 2 and 3. If all the required components are provided, one of the coils 2 and 3 is placed on the transport platform 19 together with the support elements 14 and 17 provided for it. Then, the other coil 2 and 3 is also placed on the transport platform 19 together with the support elements 14 and 17 provided for it. First, the second coil 3 of smaller construction can be placed and then the larger first coil 2. However, independently of this, the larger first coil 2 can also be placed on the transport platform 19 first and then the smaller second coil 3 can be placed on it.

[0059] It may be advantageous if the first support element 14 and the second support element 17 are arranged offset relative to one another as viewed in the circumferential direction about the longitudinal axes 8 , 9 . This simplifies access to the support elements 14 , 17 and avoids possible mutual collisions.

[0060] The coils 2 and 3 are oriented and arranged relative to each other in a substantially coaxial position, wherein the smaller second coil 3 is arranged inside the first coil 2. A free and coreless core region 6 of the first coil 2 is provided for this purpose. Therefore, a substantially coaxial orientation is selected to avoid mutual damage. The first support element 14 and / or the second support element 17 can be fixedly held after being placed on the transport platform 19. This can be done, for example, by fastening means, such as bolts, threaded elements or the like. In addition, at least one spacing element 20 can be provided and provided. Preferably, a plurality of spacing elements 20 are provided, wherein one spacing element 20 or a plurality of spacing elements 20 are arranged between the first coil 2 and the at least one second coil 3 in a radial direction. The spacing element 20 is elastically retractable within certain limits and can also have a longitudinal extension direction of a wedge-shaped structure. The material preferably has the property of being elastically self-resetting so as to be maintained in a prestressed position between the coils 2 and 3 in its assembly position. The spacing element 20 preferably extends approximately over the entire structural height of the coils 2 and 3. When one of the coils 2 , 3 is removed from the transport platform 19 , the spacing element 20 can prevent mutual damage to the sides or surfaces of the coils 2 , 3 that face each other.

[0061] If this is done, additional protective and / or packaging elements can be provided around the coils 2, 3. If the preparatory processes necessary for transport are completed, the coils 2, 3 are ready for transport and are transported to the construction site. After the transport process and arrival at the construction site, the coils 2, 3 are removed from the transport platform 19 and unloaded.

[0062] In a possible embodiment, the coils 2, 3 are arranged one above the other in a tower-like configuration on a preferably horizontally oriented construction surface 12 at the construction site and thus form a coil assembly 1. The two longitudinal axes 8 and 9 are arranged aligned relative to each other in the tower-like configuration to form a common central longitudinal axis 13 and are arranged in a normal and thus perpendicular orientation relative to the construction surface 12.

[0063] The supporting elements 14, 17 mentioned above are preferably structurally matched to the winding layers 4, 7 according to their configuration and number. The configurations are basically identical in principle to one another, wherein only the first supporting element 14 is described in detail below. The description and explanation apply analogously to the second supporting element 17, wherein Figure 5 The first support element 14 is shown in Figure 6 2 shows a second support element 17. The first support element 14 can be arranged not only in the first coil 2 but also in the second coil 3 or only in the second coil 3. The same also applies to the second support element 17. However, the second support element 17 can be arranged not only in the second coil 3 but also in the first coil 2 or only in the first coil 2.

[0064] exist Figure 5 The first support element 14 shown in the simplified figure is configured in a fork shape and comprises a first support element base 21 and at least one inner support element fork 22 and an outer support element fork 23. The first support element forks 22, 23 protrude from the first support element base 21 or rise from it. The support element forks 22, 23 are arranged at a distance from each other to form a first receiving gap 24. The first support element base 21 is used to support on a base, i.e., a building surface 12 and / or a transport platform 19, in a manner that absorbs the load of the first coil 2. As mentioned above, the first support element 14 can also be supported on the base by means of an insulator if necessary.

[0065] exist Figure 6The second support element 17 shown in a simplified manner in FIG. 1 is also designed in a fork-shaped manner and comprises a second support element base 25 and at least one inner support element fork 26 and an outer support element fork 27. The second support element forks 26, 27 protrude from the second support element base 25 or rise from it. The support element forks 26, 27 are also arranged at a distance from each other to form a second receiving gap 28. The second support element base 25 can be supported on the transport platform 19 during transportation. In the erected state, the second support element base 25 is supported on the first support element base 21 of the first support element 14 by means of the coupling element 18.

[0066] Preferably, at least for transporting the coils 2, 3, a support element 14, 17 is provided for each of the coils. This arrangement can be selected to be loose and / or fixed in position as well as fixed. The fixed arrangement can also be referred to as fastening, wherein this is carried out, for example, in the course of the manufacturing process with the aid of the resin used as a binder. Before the support elements 14, 17 are arranged and possibly fastened on the respective coils 2, 3, due to the winding process for forming the individual winding layers 4, 7, a slope compensation element 29 can be provided between the respective support element 14, 17 and the winding layer 4, 7, wherein the inclination compensation element 29 is provided between the respective support element 14, 17 and the winding layer 4, 7. Figure 5 Only one of the inclination compensation elements is shown in FIG. 1 by dashed lines. One or more inclination compensation elements 29 can be formed by separate components and / or can be a direct and integrated component of the support elements 14 and / or 17 or can be formed therefrom.

[0067] The first support element 14 is arranged on the at least one first winding layer 4 of the first coil 2 in such a way that the at least one first winding layer 4 is received in the first receiving gap 24. The at least one inner support element fork 23 of the first support element 14 is located on the side of the at least one first winding layer 14 facing the first longitudinal axis 8. Conversely, the at least one outer support element fork 23 of the first support element 14 is located on the side of the at least one first winding layer 4 facing away from the first longitudinal axis 8.

[0068] Similarly, the second support element 17 is arranged on the at least one second winding layer 7 of the second coil 3 in such a way that the at least one second winding layer 7 is accommodated in the second accommodation gap 28. The at least one inner support element fork 26 of the second support element 17 is located on the side of the at least one second winding layer 7 facing the second longitudinal axis 9. Conversely, the at least one outer support element fork 27 of the second support element 17 is located on the side of the at least one second winding layer 7 facing away from the second longitudinal axis 9.

[0069] It is thus possible to use the same support elements 14 , 17 both for transport and when building and arranging coils 2 , 3 one above the other. This is the case in particular if they are fixedly connected to at least one winding layer 4 , 7 .

[0070] If the transport to the construction site is complete, the construction and final assembly are carried out on the construction surface 12 provided for this purpose. For this purpose, the first coil 2 is first connected to one or more insulators if necessary and then supported on the construction surface 12 by means of the first support element 14. If these are already present, this is done with the help of the already existing first support element 14. It is also possible that the first support element 14 used during transportation is not used for the final assembly, but a new, own first support element 14 is used for this purpose. The arrangement of the first support element 14 on the at least one first winding layer 4 of the first coil 2 is carried out similarly, as has been described in detail above.

[0071] In order to be able to support the at least one second coil 3 on the first coil 2, a first supporting element 14 is also provided on a second end region 16 of the first coil 2 which is spaced apart in the axial direction from the first end region 15. This can be done directly during the production of the first coil 2 or during the construction and assembly process.

[0072] Furthermore, for the tower construction, the coupling element 18 described above can be arranged on the first support element 14 and / or on the second support element 17 and fastened thereto. This can be done, for example, by means of a screw connection, a rivet connection or a clamping connection. In the support elements 14, 17 facing each other and to be coupled to each other, preferably only one coupling element 18 is used. The coupling element 18 is arranged so that it protrudes from the first support element 14 in the direction of the first longitudinal axis 8 or from the second support element 17 in the side or direction facing away from the second longitudinal axis 9. The coupling element 18 can be connected first to the first support element 14 or to the second support element 17.

[0073] If the second support element 17 is already present on the second coil 3, in particular fastened thereto, the support on the first coil 2 is carried out by means of the already present second support element 17. If this is not the case, the second support element 17 is arranged on the third end region 30 of the second coil 3 in a similar manner, as has already been described in detail above. The third end region 30 faces the transport platform 19 or the first coil 2. This is in principle always the same end region 30 of the second coil 3.

[0074] If a further coil (not shown) is to be arranged above or on the second coil 3, a second support element 17 is also arranged or mounted in the fourth end region 31. The second support element 17 in the fourth end region 31 can also be used independently thereof to fasten a covering element, such as a cover, an electrical connection or the like.

[0075] If the first support element 14, the second support element 17 and the coupling element 18 located therebetween are in a position oriented relative to one another, the corresponding coupling element 18 can be connected to the support element 14 or 17 that was connected up to that point. To this end, the second support element 17 is arranged around the second longitudinal axis 19 with the same division as the first support element 14 or vice versa.

[0076] Once the alignment and assembly process of the coils 2 , 3 has taken place, the second longitudinal axis 9 of the second coil 3 is arranged aligned with respect to the first longitudinal axis 8 of the first coil 2 . The longitudinal axes 8 and 9 then define a common central longitudinal axis 13 .

[0077] exist Figure 8 1 shows another and possibly separate arrangement possibility of a first coil 2 and a second coil 3 accommodated inside the first coil, wherein the same components are again used as in the previous example. Figures 1 to 7 In order to avoid unnecessary repetition, the same reference numerals or component names as in the previous Figures 1 to 7 Detailed description in .

[0078] In the coils 2, 3 arranged in one another here, the supporting elements 14, 17 arranged and provided directly for placement on the transport platform 19 are omitted. However, the supporting elements 14, 17 can also be installed later and mounted on the coils 2, 3. In this arrangement, an outer first coil 2 with a plurality of winding layers 4, namely four first winding layers 4, and a second coil 3 which is smaller than this and has only a single second winding layer 7 shown for the sake of simplicity, it is also possible to arrange a plurality of second winding layers in the second coil 3. However, each of the coils 2, 3 can also include only a single winding layer 4, 7.

[0079] Furthermore, the following possibility is shown: the first larger coil 2 can include a first holding device 32 of preferably star-shaped design at its second end region 16, which can also be called a winding star. In order to be able to accommodate at least the second coil 3 in its core region 6, the first end region 15 is designed to be open and free. It is then possible that the first coil 2 is put on the second coil 3 which is already placed or located on the transport platform 19 from above. In this case, the second coil 3 has or is provided with a second holding device 33 at least at its third end region 30 and / or has or is provided with a third holding device 34 at its fourth end region 31. The second holding device 33 and also the third holding device 34 are each preferably designed in a star shape and can also be called a winding star. In order to be able to arrange the coils 2, 3 in each other, according to the design of the coils 2, 3, in particular in the coils with the previously described star-shaped holding devices 32, 33, 34, the length or height of the smaller second coil 3 arranged inside should be the same to the greatest extent, but preferably selected to be smaller than the length or height of the first coil 2 located outside.

[0080] It has been found to be suitable that the length or height of the inner coil 3 is about 50% to 100%, preferably about 70% to 90%, of the length or height of the outer coil 2. Figure 8 If the first holding device 32 (winding star) shown in FIG. 1 is arranged at the second end region 16 facing away from the transport platform 19 , the total height of the second coil 3 is at most 100% of the length or height of the outer coil 2 , but is preferably slightly less.

[0081] If, on the other hand, in the case of the outer first coil 2, the first holding device 32 (winding star) is arranged on the first end region 15 facing the transport platform 19 or if no first holding device 32 is provided at all (no winding star), as in Figures 1 to 7 As described in , the length or height of the second coil 3 arranged inside is from 50% to 150% relative to the first coil 2. However, it is also possible that in the first coil 2, the first holding device 32 is arranged on the second end region 16 and the first coil 2 is supported in the upper part of the transport platform 19 by means of the first holding device 32 for transportation. In this case, the first end region 15 facing away from the transport platform 19 is designed to be open and the second coil 3 can be inserted from above into the open core region 6 of the first coil 2 and accommodated therein.

[0082] Therefore, coils 2, 3 with up to three winding stars or holding devices 32, 33, 34 can also be transported in one another, but only if the height dimensions are adapted to one another or the first holding device 32 (winding star) of the first coil 2 is arranged in a lower position and the second coil 3 is placed on the first holding device 32 of the first coil 2 with or without its star-shaped holding device 33, 34. In this case, the second coil 3 is supported indirectly and not immediately and not directly on the transport platform 19. Independently of this, however, the larger first coil 2 can also be supported on the transport platform 19 at least for transport with the first supporting element 14 at its open first end region 15. However, it is also possible that the first supporting element 14 is also fixedly and firmly mounted in the region of the first end region 15.

[0083] It is also possible that: Figure 8 The coils 2 , 3 shown in FIG. 1 are arranged one above the other in a tower-shaped arrangement, or the coils 2 , 3 are also built side by side to form a coil assembly 1 .

[0084] Finally, it should be pointed out that the individual method steps and their chronological sequence do not necessarily have to be carried out in the order listed, but a chronological sequence deviating therefrom is also possible.

[0085] The various embodiments illustrate possible implementation variants, wherein it should be noted here that the present invention is not limited to the particularly illustrated implementation variants of the present invention, but on the contrary, different combinations of the individual implementation variants with one another are possible and this possibility of variation is within the capabilities of those skilled in the art based on the teaching of the technical means through the specific present invention.

[0086] The scope of protection is determined by the claims. However, the description and the drawings serve to interpret the claims. Individual features and combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. Objects based on independent inventive solutions can be derived from the description.

[0087] All descriptions of numerical ranges in a specific specification should be understood such that the numerical ranges include any and all partial ranges resulting therefrom, for example, the description 1 to 10 should be understood such that all partial ranges starting from a lower limit of 1 and an upper limit of 10 are included, that is, all partial ranges starting with a lower limit of 1 or greater and ending with an upper limit of 10 or less, for example 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

[0088] Finally, it should be pointed out that, in order to facilitate a better understanding of the described construction, some elements are not shown to scale and / or are shown enlarged and / or reduced in size.

[0089] Reference numerals list

[0090] 1 Coil assembly

[0091] 2First coil

[0092] 3 Second coil

[0093] 4First winding layer

[0094] 5 Spacer

[0095] 6 core areas

[0096] 7 Second winding layer

[0097] 8First longitudinal axis

[0098] 9 Second longitudinal axis

[0099] 10Inner dimensions

[0100] 11External Dimensions

[0101] 12 Construction Surface

[0102] 13Central longitudinal axis

[0103] 14First supporting element

[0104] 15 first end region

[0105] 16 Second end region

[0106] 17 Second support element

[0107] 18 coupling elements

[0108] 19Transportation Platform

[0109] 20 Spacer elements

[0110] 21 first supporting element base

[0111] 22 inner support element fork

[0112] 23 outer support element fork

[0113] 24 The first receiving seam

[0114] 25 second supporting element base

[0115] 26 inner support element fork

[0116] 27 outer support element fork

[0117] 28 Second accommodation seam

[0118] 29 Slope compensation element

[0119] 30 Third end region

[0120] 31 Fourth end area

[0121] 32First holding device

[0122] 33 Second holding device

[0123] 34Third holding device

Claims

1. A method for providing coils (2, 3) at a supply site, transporting the coils (2, 3) from the supply site to a construction site, and constructing the coils (2, 3) into a coil assembly (1) at the construction site, the method comprising the following steps: - providing a first coil (2) having at least one first winding layer (4), the first coil (2) having a first end region (15) and a second end region (16) spaced apart from the first end region in the direction of a first longitudinal axis (8), at least one of the end regions (15, 16) being open, and a free core region (6) of the first coil (2) having a clear inner dimension (10) having an inner diameter; - providing at least one second coil (3), the second coil having at least one winding layer (7), the second coil (3) having a third end region (30) and a fourth end region (31) spaced apart from the third end region in the direction of the second longitudinal axis (9), and the second coil (3) having an outer dimension (11) having an outer diameter, the outer dimension (11) being smaller than a clear inner dimension (10) of the first coil (2); - providing a plurality of first support elements (14) for said first coil (2) and / or a plurality of second support elements (17) for said at least one second coil (3); - providing a transport platform (19) for the coils (2, 3); - before placing the coils (2, 3) on the transport platform (19), the first support element (14) and / or the second support element (17) are arranged on at least one of the coils (2, 3) at their respective end regions (15, 16; 30, 31), so that at least one of the coils (2, 3) can be supported on the transport platform (19) by means of at least three of the support elements (14, 17); - arranging one of the coils (2, 3) on the transport platform (19) and supporting the one coil on the transport platform (19) in an orientation perpendicular to its longitudinal axis (8, 9) at the provision site; - arranging at least one further coil of the coils (3, 2) on the transport platform (19) and supporting the at least one further coil on the transport platform (19) located at the provision site, and correspondingly aligning the at least one further coil of the coils (3, 2) in a substantially coaxial position relative to the coils (2, 3) already located on the transport platform (19), and arranging the at least one second coil (3) which is smaller with its smaller outer dimensions inside the first coil (2), or arranging the at least one further coil of the coils (3, 2) inside the coils (2, 3) already located on the transport platform (19) and supporting the at least one further coil on the coils (2, 3) already located on the transport platform; - transporting the coils (2, 3) placed on the transport platform (19) from the provision site to the construction site; - removing the coils (2, 3) from the transport platform (19) and configuring at least two of the coils (2, 3) to form the coil assembly (1) on a horizontally oriented building surface (12), with the first longitudinal axis (8) of the first coil (2) being oriented vertically and the second longitudinal axis (9) of the at least one second coil (3) being oriented vertically.

2. The method according to claim 1, characterized in that The first support element (14) and the second support element (17) are arranged offset relative to one another when viewed in a circumferential direction about the longitudinal axes (8, 9).

3. The method according to claim 1 or 2, characterized in that: The first supporting element (14) and / or the second supporting element (17) are fixedly held on a transport platform (19).

4. The method according to claim 1 or 2, characterized in that: The first supporting element (14) and / or the second supporting element (17) are fastened to a transport platform (19).

5. The method according to claim 1 or 2, characterized in that: At least one spacing element (20) is provided, and the one spacing element (20) is arranged between the first coil (2) and the at least one second coil (3) in a radial direction.

6. The method according to claim 1 or 2, characterized in that: A plurality of spacer elements (20) are provided, and the plurality of spacer elements (20) are arranged between the first coil (2) and the at least one second coil (3) in a radial direction.

7. The method according to claim 1 or 2, characterized in that: The first supporting element (14) is likewise arranged on a second end region (16) of the first coil (2) which is spaced apart from the first end region (15) in the axial direction.

8. The method according to claim 1 or 2, characterized in that: The coils (2, 3) are constructed into the coil assembly (1) in a tower-shaped arrangement of the coils (2, 3) one above the other, and a first coil (2) is first constructed on the construction site and then a first end region (15) of the first coil is supported on the construction surface (12) by means of a first supporting element (14).

9. The method according to claim 1 or 2, characterized in that: The support elements (14; 17) are configured in a fork-shaped manner and each comprises a support element base (21; 25) and at least one inner support element fork (22, 26) and at least one outer support element fork (23; 27), wherein each of the support element forks (22, 23; 26, 27) protrudes from the support element base (21; 25) and is arranged at a distance from each other in order to construct a receiving slot (24; 28).

10. The method according to claim 9, characterized in that The first supporting element (14) is arranged on the at least one first winding layer (4) of the first coil (2), so that the at least one first winding layer (4) is accommodated in a first accommodating gap (24) and the at least one inner supporting element fork (22) is located on the side of the at least one first winding layer (4) facing the first longitudinal axis (8), and the at least one outer supporting element fork (23) is located on the side of the at least one first winding layer (4) facing away from the first longitudinal axis (8), and the first supporting element base (21) is supported on the transport platform (19).

11. The method according to claim 9, characterized in that The second supporting element (17) is arranged on the at least one second winding layer (7) of the second coil (3) so that the at least one second winding layer (7) is accommodated in the second accommodating gap (28), and the at least one inner supporting element fork (26) is located on the side of the at least one second winding layer (7) facing the second longitudinal axis (9), and the at least one outer supporting element fork (27) is located on the side of the at least one second winding layer (7) facing away from the second longitudinal axis (9), and the second supporting element base (25) is supported on the transport platform (19).

12. The method according to claim 7, characterized in that The second support element (17) is arranged around the second longitudinal axis (9) at the same interval as the first support element (14).

13. The method according to claim 7, characterized in that A coupling element (18) is fastened to each first support element (14) located in a second end region (16) of the first coil (2), wherein the coupling element (18) is arranged so as to protrude in the direction of the first longitudinal axis (8).

14. The method according to claim 1 or 2, characterized in that A coupling element (18) is fastened to each second support element (17) of the second coil (3), wherein the coupling element (18) is arranged to protrude in a direction facing away from the second longitudinal axis (9).

15. The method according to claim 13, characterized in that The second coil (3) is arranged to be supported on the first support element (14) with a second support element (17) located thereon and with corresponding coupling elements (18) connected in between, and each of the coupling elements (18) which has not been connected to one of the support elements (14, 17) so far is connected to the support element.

16. The method according to claim 1 or 2, characterized in that At least some of the first support elements (14) are fixedly connected to the at least one first winding layer (4) of the first coil (2), and / or at least some of the second support elements (17) are fixedly connected to the at least one second winding layer (7) of the second coil (3).

17. The method according to claim 1 or 2, characterized in that The second longitudinal axis (9) of the second coil (3) is arranged in alignment with the first longitudinal axis (8) of the first coil (2), and the longitudinal axes (8, 9) define a common central longitudinal axis (13).

18. The method according to claim 1 or 2, characterized in that In order to transport the coils (2, 3) and / or when constructing the coils (2, 3) for forming the coil assembly (1), an inclination compensation element (29) is respectively arranged or constructed between at least one individual first support element of the first support element (14) and the at least one first winding layer (4) and / or between at least one individual second support element of the second support element (17) and the at least one second winding layer (7).

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