Support arrangement and transformer with support arrangement

Abstract

A support arrangement for a conductor (16, 17) of a transformer (20) with a support frame comprising a first support beam (1) and a second support beam (2), which are connected to each other via at least a first crossbeam (7), characterized in that a third support beam (3) is connected to the second support beam (2) via a second crossbeam (9), wherein the first support beam (1) and the second support beam (2) are located in a first layer (8) and the third support beam (3) and the second support beam (2) are located in a second layer (10) and the layers (8, 10) intersect each other, wherein the second support beam (2) is formed as a double wall, and the first crossbeam (7) projects into a receiving opening located between walls (13a, 13b) of the second support beam (2) and the second crossbeam (9) projects into a through-opening (14) recessed into a wall (13a, 13b) intervenes.

Description

[0001] The invention relates to a support arrangement for a transformer conductor with a support frame comprising a first support beam and a second support beam, which are connected to each other via at least a first crossbeam.

[0002] A support arrangement is known, for example, from the generic international publication WO 02 / 063 721 A2. This publication describes a support frame for routing transformer cables. The support frame has several support beams. The support beams are connected to each other via crossbeams. All support beams are arranged in a single layer and are approximately congruent. This creates a low-profile support frame that provides a flat guide for transformer cables. However, due to this design, the torsional stiffness of the support frame is relatively low. Because of the alternating fields occurring at a transformer and the resulting fluctuating stresses, the long-term stability of such support arrangements is considered critical.Therefore, a compromise must always be made between a compact support structure and the necessary rigidity of such a construction. This compromise reaches its limits, especially when dealing with large masses that need to be controlled.

[0003] From the Fig. 2 of CN 107 068 335 A describes a construction made of profile bars. DE 20 2008 015 922 U1 describes an assembly platform with platform sections, each with one-piece support struts.

[0004] The object of the invention is therefore to provide a support arrangement which can safely position large masses in a long-term stable manner.

[0005] According to the invention, the problem is solved in a support arrangement of the type mentioned at the outset by a third support beam being connected to the second support beam via a second crossbeam, wherein the first support beam and the second support beam are in a first layer and the third support beam and the second support beam are in a second layer and the layers intersect each other, wherein the second support beam is formed as a double wall, and the first crossbeam projects into a receiving opening located between walls of the second support beam and the second crossbeam engages in a through-opening embedded in a wall.

[0006] A transformer is an electrical energy transmission device used to convert electrical energy. Using the transformer principle, voltages are changed by means of a transformer. The resulting alternating fields cause forces in the transformer's surroundings. In particular, vibrations can occur at the transformer. Such vibrations are difficult to prevent and manifest themselves, for example, as a typical transformer hum.

[0007] Transformers must be connected to an electrical power transmission network via cables. These cables supply an electric current to the transformer's coils. Transformer coils are usually equipped with a core that carries a magnetic flux, thus increasing the transformer's efficiency. The coils and core together are referred to as the active part of the transformer. The transformer's cables must be routed to and positioned within this active part, specifically to the coils within the active part. The cables that connect to the transformer's active part are typically called leads. Leads can be routed through the transformer's enclosure to the active part, for example, via bushings such as air bushings or gas bushings. An enclosure can surround the transformer's active part and provide it with mechanical protection.The housing is also referred to as the passive part of the transformer. For electrical insulation, the housing can be filled with an electrically insulating fluid, such as an oil, an ester, or even a gaseous substance like sulfur hexafluoride. Housings (e.g., transformer tanks) can preferably be electrically conductive and grounded.

[0008] A support structure is used to position transformer conductors. A support structure includes a support frame that provides attachment points near the transformer's active part to secure the conductors. The support frame of the structure includes, for example, support beams, which can also serve to transfer support forces. Support beams are essentially elongated elements running along a vertical axis, serving as the base for the support frame. The support beams can, for example, be vertically aligned with a vertical axis and serve to support a crossbeam. A crossbeam connects two support beams, with the crossbeam running essentially perpendicular to the vertical axis of the support beams.It is advantageous to arrange a first support beam and a second support beam parallel to each other, particularly in the direction of a vertical, with a first crossbeam connecting the first support beam to the second support beam. The crossbeam is supported by at least one of the support beams, and preferably by both. Advantageously, a shear force can also be transmitted between the support beams via the crossbeam. The first and second support beams should be aligned essentially parallel to each other, so that they are arranged lying in a first layer. This layer can, for example, have an essentially planar profile. The first and second support beams can advantageously be aligned parallel to each other with respect to their vertical axes. Accordingly, the first and second support beams define a layer that is essentially planar.The first crossbeam runs on or within this flat layer, or at least parallel to it, so that the first and second support beams create a low-profile support frame structure. The first crossbeam is advantageously arranged in a rung-like fashion between the support beams. A third support beam is connected to the second support beam via a second crossbeam, with the third and second support beams forming a second layer. This second layer is perpendicular to the first layer, and the layers intersect. Preferably, the second layer is substantially flat, similar to the first layer, so that the third support beam is positioned in front of and at a distance from the first and second support beams. A perpendicular orientation of the layers is also preferable.Preferably, the first, second, and third support beams can be aligned parallel to each other, particularly with respect to their vertical axes. An axis of intersection between the first and second layers can also preferably be aligned parallel to at least one of the support beams. Preferably, the axis of intersection between the first and second layers can be formed by one of the support beams, particularly by the second support beam, which is part of both the first and second layers. The second crossbeam can run within or parallel to the second layer, so that the angular relationship between the first and second crossbeams is preferably the same as that between the first and second layers.By offsetting the third support beam from the alignment of the first and second support beams, stabilization of the support beams is achieved, as forces are transferred from the first layer and the second layer stiffens the first layer. This results in a support frame, similar to a rack or shelf, with multiple support beams between which crossbeams are positioned at right angles. Multiple first, second, and / or third crossbeams can be arranged between support beams. Advantageously, the multiple crossbeams are arranged axially offset with respect to the vertical axis of a support beam.

[0009] Another advantageous embodiment can provide that the support frame is a box frame.

[0010] A box frame has support beams that form the edges of the box. The support beams define the vertices of a polygon at their ends. This polygon essentially corresponds to the base of the support frame. At these points, the support beams can rest on a foundation, for example, at their ends, and forces from the crossbeams can be transferred via the support beams to the foundation. The crossbeams preferably lie within the imaginary faces of the box, with the box faces partially infilled by the crossbeams. A box frame can, for example, have a prismatic shape, with the end faces of the prism being polygonal. For instance, by using three support beams, a triangular base, preferably with equal sides, can be created, resulting in a stiffened box shape.The rigidity of the box structure can be increased by profiling the corresponding support beams.

[0011] Another advantageous embodiment can provide that the first crossbeam has an attachment point for a first line and the second crossbeam has an attachment point for the first line.

[0012] A cable, for example, is a transformer output cable that serves as an electrical connection for an active part of the transformer. Such an output cable must be held securely near the active part to prevent vibrations. The cable can be fixed to the support frame, for example, by using lifting ties to anchor points on the frame. Advantageously, these anchor points are located on both the first and second crossbeams. Due to the angled orientation of the first and second crossbeams in a first and second layer, respectively, force transmission from the cable to the support frame is ensured even at two anchor points that are perpendicular to each other. Thus, the stability of the support frame is enhanced by the multi-point transmission of forces at anchor points that are perpendicular to each other.If necessary, such a positioning of the anchor points allows for a certain degree of elasticity in the support frame, since any elasticity in one of the two layers can be compensated for by the connection of the crossbeams to the support beams due to the angled positions. Accordingly, cost-effective materials can be used for constructing the support frame. Furthermore, this simplifies assembly, as the adjustment and alignment effort for support beams and crossbeams can be reduced. For example, a groove, a recess, or similar feature can be provided on a crossbeam to create an anchor point, into which a cable to the system is routed. Advantageously, a cable can be wedged between two crossbeams. These crossbeams can advantageously consist of two primary or two secondary crossbeams.

[0013] Another advantageous embodiment can provide that a sequence of crossbeams is arranged between the support beams in a circuit around the support beams.

[0014] In a circuit of support beams, particularly a circuit around the vertical axes of the support beams, which are preferably aligned parallel to each other, crossbeams can be arranged successively between the support beams. An axial offset between the crossbeams can be provided in the direction of the vertical axis of the support beams. However, when projecting in the direction of the vertical axes of the support beams, and thus also the vertical axis of the support frame, a closed circuit of crossbeams is advantageous. This closed circuit allows forces from the crossbeams to be transferred to the support beams arranged on both sides and from there to further crossbeams. Accordingly, holding forces, such as those emanating from a transformer cable, can be distributed in a ring-shaped pattern and introduced into the support frame. This prevents overloading of individual support beams.Forces can be transferred via the crossbeams to further support beams located on both sides of a support beam.

[0015] Furthermore, it may be advantageously provided that a fourth support beam is connected to the third support beam via a third crossbeam and to the first support beam via a fourth crossbeam.

[0016] The arrangement of four support beams, each connected to the others via crossbeams, allows for an increase in the number of support beams into which forces can be transferred. This, in turn, increases the number of points at which forces can be transferred into the foundation. Furthermore, using four support beams is suitable for maintaining a rectangular frame structure. This can be achieved, for example, by arranging parallel layers, each containing two support beams, at 90° to each other, resulting in the four support beams being positioned at the vertices of a cuboid. Multiple first crossbeams, and / or multiple second crossbeams, and / or multiple third crossbeams, and / or multiple fourth crossbeams can also be used.

[0017] It can be advantageous to provide that the support frame is essentially rectangular and box-shaped.

[0018] A right-angled arrangement makes it possible to replace known support frames with support frames according to the invention, while only slightly altering the positions of the conductors to be supported. Furthermore, right-angled structures can also be integrated into existing transformer designs in an improved manner.

[0019] Advantageously, it can further be provided that the support beams are arranged at the vertices of a polygon, in particular a triangle or a quadrilateral.

[0020] The number of support beams essentially defines the base area on which the support frame rests, or the base area spanned by the support frame. For example, using three support beams allows for a triangular base area for the support frame. Using four support beams enables the formation of a rectangular base area. Depending on the number of support beams, a certain number of layers are created, each extending between two adjacent support beams. Between each pair of layers abutting or intersecting at a support beam, an interior angle is formed. This angle should be approximately the same for all support beams within a given base area, so that preferably equilateral base areas with equally spaced vertices are formed at the support arrangement.The first, second, third, and fourth crossbeams can each be arranged multiple times between two support beams. Multiplying the number of crossbeams increases the stability of the support structure. The individual crossbeams can be identical or different in design. For example, the crossbeams can be spaced like rungs between support beams along the vertical axis.

[0021] Furthermore, it can be advantageously provided that the support beams have a substantially rectangular outline in cross-section, wherein two support beams, which are connected to each other via a crossbeam, face each other with a short and a long rectangular side.

[0022] Support beams are elongated elements extending along a vertical axis. Viewed along this axis, a support beam has a cross-section (end face). A substantially rectangular outline of the cross-section is advantageous for using standardized semi-finished products to form the support beams. For example, the support beams can be rectangular, resulting in a short side and a long side in cross-section. Adjacent support beams can then be arranged such that the facing surfaces of the two adjacent support beams (connected by a crossbeam) align themselves with one short side and the other long side of a rectangular outline of the support beam. In one circuit of the support frame, the successive support beams are each rotated relative to one another around the vertical axis.For example, a 90° rotation can be provided in each case, in particular a 90° rotation can be provided if exactly four support beams represent the points of a rectangle. In this case, diagonally arranged support beams aligned in the same way are advantageous.

[0023] Another advantageous embodiment may provide that at least one of the crossbeams is positively inserted into a recess of a supporting beam carrying it.

[0024] A positive-locking connection, particularly a plug-in connection between the crossbeam and support beam, simplifies assembly. For example, tongue-and-groove joints can be used between the crossbeam and support beam. The crossbeam might, for instance, have a tenon that projects into a recess in the support beam. This ensures a sufficiently rigid connection between the support beam and crossbeam. Assembly of such a plug-in connection is simplified. By profiling the complementary elements of the crossbeam and support beam, a torsion-resistant connection between them can be created.Furthermore, the positive-locking connection of a support beam to a crossbeam allows relative movement between them, so that, for example, when vibrations occur, relative movement of the crossbeam and support beam is permitted, thus preventing loosening, as can happen with a bolted or glued connection of a crossbeam to a support beam. A positive-locking connection can also be secured by force or material bonding.

[0025] Furthermore, it is provided that at least one of the support beams is double-walled, with a receiving opening for a crossbeam arranged between the walls.

[0026] A double-walled support beam can, for example, be constructed from two walls, particularly of the same type, which are essentially congruent, with a gap between them. A recess for a crossbeam can be located between the two walls. The crossbeam can project into the space between the two walls, i.e., between the surfaces that define the walls and face each other. This allows the crossbeam to be positioned and fixed at numerous locations along the support beam between the double walls. The crossbeam can be pinned between the double walls.

[0027] It is planned that a through-opening for receiving a crossbeam is embedded in a wall of a support beam.

[0028] A through-opening can be incorporated into one wall of the support beam. This through-opening can have a cross-section complementary to that of a crossbeam. The crossbeam can engage into the through-opening and be secured there, for example, like a bolt or wedged in place. Advantageously, in a double-walled support beam, the spacing of the double wall can correspond to the width of the through-opening, so that a crossbeam can be inserted into a receiving opening between the board-like walls of the support beam, as well as into a through-opening in one wall of the support beam. Both the receiving opening and an opening between the walls of a double-walled support beam thus form a recess for receiving a crossbeam, in particular for the positive-locking retention of a crossbeam. The receiving opening should preferably run transversely to the opening between the walls.In the case of a double-walled structure, an opening for receiving can extend through both walls.

[0029] Another advantageous embodiment can provide that the support frame is connected to an active part of a transformer, in particular via a transverse tab.

[0030] A transformer is preferably equipped with an active component. An active component is the part through which a current / magnetic flux passes and which, via electromagnetic fields, couples and converts a voltage. Such an active component, for example, has a magnetic core that carries a magnetic flux emanating from a coil. This coil can also be coupled into an electrical power transmission network via conductors. These conductors can be supported by the frame. A crossbar, extending, for example, from a crossbeam and / or a support beam, can define the relative position of the frame to the active component. The crossbar can act as an electrical insulator to prevent the formation of short circuits across it.

[0031] Another advantageous embodiment may provide that the support frame is connected to a passive part of a transformer, in particular via a transverse tab.

[0032] A passive part of a transformer is the component that is necessary for the active part of the transformer to function. This can include, for example, support and bracing elements. For instance, it could be a housing that surrounds the active part of the transformer. Connecting the support frame to the housing via a transverse flange is straightforward, as the passive part is typically at a neutral electrical potential. Therefore, the transfer of voltages or currents from a passive part through the support frame is rather unlikely. The transverse flange can also act as an electrical insulator.

[0033] Another advantageous embodiment can provide that the support frame has an electrically insulating effect.

[0034] An electrically insulating support frame offers the advantage that fault currents, stray currents, or similar disturbances cannot propagate further through the frame. This can be achieved by constructing at least sections of the support frame from electrically insulating materials, thus interrupting stray current paths. However, crossbeams and / or support beams can also be advantageously constructed from electrically insulating material. For example, organic materials such as cellulose, which have undergone appropriate shaping, can be used. Cellulose fibers, for instance, can be compression-molded to form the necessary shapes for a crossbeam and / or support beam. Suitable electrically insulating materials can also include plastics. For example, wood fiber materials subjected to compression molding have proven to be advantageous.Advantageously, the support frame can be surrounded by an electrically insulating fluid, such as a liquid or a gas. During transformer operation, the support frame can be advantageously located entirely within an electrically insulating fluid. Oily and ester-like fluids, for example, have proven particularly effective in providing permanent electrical stabilization of the support frame. Fasteners can also be used, especially at the connection of support beams and crossbeams, to secure their relative positions. Wedges, screws, nuts, or similar fasteners can be used for this purpose. These fasteners are also advantageously electrically insulating. The support frame can also advantageously have predominantly electrically insulating support beams and crossbeams.

[0035] Another advantageous embodiment may provide that a first support frame and a second support frame are joined together.

[0036] A first support frame and a second support frame each have a limited capacity for cables. By connecting multiple support frames, especially several identical frames, the cable capacity can be increased. For example, both the first and second support frames can have the same number of support beams, such as four beams each, arranged in a rectangular pattern. The support frames are then connected to each other using brackets, essentially creating a rigid angle connection. For example, the brackets can be attached to points on the support beams where crossbeams are also intended to be mounted. Connecting the support frames can also be achieved using crossbeams. Connecting the support frames increases their stability. Furthermore, it allows for the stable routing of cables positioned on the support frames over longer distances.Furthermore, the number of lines to be guided and stabilized on the support frame can also be increased.

[0037] Another object of the invention is to provide a suitable position for a support arrangement on a transformer in order to achieve a compact and stable routing of lines on the same.

[0038] According to the invention, a transformer has an active part which is surrounded by a passive part, wherein a support arrangement according to the preceding descriptions is arranged between the active part and the passive part.

[0039] By positioning the support arrangement between the active and passive parts, it is possible to anchor the support arrangement to one or both parts, depending on the available space. Due to the required insulation, a sufficient insulation distance must be provided between the active and passive parts. For example, the passive part can be designed as a closed transformer housing completely filled with an electrically insulating fluid, in particular an insulating oil, whereby the support arrangement can be completely surrounded by the electrically insulating fluid within the space provided for the insulating oil.

[0040] Another advantageous embodiment can provide that at least one output of the transformer is intercepted at the support arrangement.

[0041] Transformers have an active section where voltage conversion takes place using the transformer principle. So-called leads are necessary to connect the voltage to be converted. These leads can be fixed as conductors on the support structure and thus routed in a defined manner through the insulation volumes of the transformer to the outside, e.g., outside a transformer tank.

[0042] An embodiment of the invention is shown schematically in a drawing below and described in more detail thereafter. The drawing shows... Fig. 1: A perspective view of a support frame, which Fig. 2: a perspective view of the Fig. 1 known support frame from a different viewing angle with attached outlets, which Fig. 3: a support arrangement with a first support frame, which is connected to a second support frame, and the Fig. 4: a section through a transformer with a schematic representation of the position of a support arrangement.

[0043] The following will serve as an example, using the Fig. 1. The basic structure of a support frame or support arrangement is described. Based on the representation of the Fig. 1 is in the Fig. 2 a different perspective view of the support frames according to Fig. 1 shown. In the Fig. 3 is the one from the Fig. 1 and Fig. Two known support frames are joined to another support frame of similar basic structure.

[0044] The one in Fig. The support frame shown in Figure 1 comprises a first support beam 1, a second support beam 2, a third support beam 3, and a fourth support beam 4. The four support beams 1, 2, 3, 4 have essentially the same construction. Each support beam 1, 2, 3, 4 extends essentially along a vertical axis 5. The vertical axes 5 of the support beams 1, 2, 3, 4 are arranged essentially parallel to each other. The vertical axes 5 run in a vertical direction. At the base, each of the four support beams 1, 2, 3, 4 is provided with a foot 6. The feet 6 terminate the support beams 1, 2, 3, 4 and enable the support beams 1, 2, 3, 4 to be placed on a foundation and provide mechanical protection for the ends of the support beams 1, 2, 3, 4 facing the foundation. The support beams 1, 2, 3, 4 are placed on the feet 6 at their ends.

[0045] The first support beam 1 is connected to the second support beam 2 via a first crossbeam 7. Several first crossbeams 7 are arranged successively along the vertical axes 5 of the first and second support beams 1, 2. The crossbeams 7 can have different shapes / orientations depending on their function. Due to the parallel alignment of the first and second support beams 1, 2, the two support beams 1, 2 lie in a first layer 8. The arrangement of the first crossbeams 7 is chosen such that they are also located in the first layer 8. The crossbeams are oriented with their transverse axes essentially perpendicular to the vertical axes 5 of the support beams 1, 2, 3, 4, which they connect. The second support beam 2 is connected to the third support beam 3 via a second crossbeam 9. The third support beam 3 is aligned parallel to the first support beam 1 and the second support beam 2.The third support beam 3 is positioned at a distance from the first layer 8. The third support beam 3 lies in front of the first layer 8. A second layer 10 is spanned between the second support beam 2 and the third support beam 3. The second layer 10 is essentially perpendicular to the first layer 8 and intersects it. Several second crossbeams 9 extend between the second support beam 2 and the third support beam 3. These several second crossbeams 9 are also located within the second layer 10. Consequently, a right-angled orientation is also observed between the first crossbeams 7 and the second crossbeams 9. The first support beam 1, the second support beam 2, and the third support beam 3 are thus positioned at the vertices of an isosceles triangle with respect to their vertical axes 5.To complete the support beams, the fourth support beam 4 is arranged diagonally to the second support beam 2, with the fourth support beam 4 completing the arrangement of the support beams 1, 2, 3, 4 into a rectangular, specifically square, configuration. The third support beam 3 and the fourth support beam 4 are connected to each other via a third crossbeam 11. Several third crossbeams 11 are again arranged along the vertical axes 5 between the third support beam 3 and the fourth support beam 4. To also form a support frame as an angle-stable box frame, a fourth crossbeam 12 is arranged between the fourth support beam 4 and the first support beam 1. Again, several fourth crossbeams 12 are arranged along the vertical axes 5 between the first support beam 1 and the fourth support beam 4.Analogous to the position of the first layer 8 and the second layer 10, the third support beam 3 and the fourth support beam 4, and the third crossbeams 11 arranged therein, span a third layer, which is arranged essentially parallel to the first layer 8 and, in turn, essentially perpendicular to the second layer 10. Furthermore, a fourth layer is arranged between the first support beam 1 and the fourth support beam 4, in which the fourth crossbeams 12 are arranged. The fourth layer is aligned parallel to the second layer 10 and perpendicular to the first layer 8 and perpendicular to the third layer. A representation of the third and fourth layers is omitted in the [reference to be added]. Fig. Figure 1 has been omitted for clarity. In a projection along the vertical axes 5, the four layers form a double cross, which has one of the support beams 1, 2, 3, 4 at each of its vertices.

[0046] The following describes the construction of a support beam as an example. The four support beams 1, 2, 3, 4 are identical in construction. Each support beam 1, 2, 3, 4 has a rectangular outline. Correspondingly, the feet 6 are provided with a rectangular outline that is complementary in shape but has a larger surface area than the outline of the support beams 1, 2, 3, 4. The position of the support beams 1, 2, 3, 4 is chosen such that the support beams connected by a crossbeam 7, 9, 11, 12, i.e., those lying in a common layer, are rotated 90° relative to each other with respect to their respective vertical axis 5. This means that the support beams 1, 2, 3, 4, which are directly connected via a traverse 7, 9, 11, 12, each have a narrow side of the rectangular cross-section or a wide side of the rectangular cross-section of the envelope contour facing each other.This creates a structure in which diagonally opposite support beams have the same orientation, whereas the support beams in each layer are rotated 90° relative to each other. The support beams 1, 2, 3, 4 are double-walled, with a first board-like wall 13a spaced apart from a second board-like wall 13b, so that a slit-like opening for the crossbeams 7, 9, 11, 12 is formed between the walls. Through openings 14, with a substantially rectangular cross-section, are distributed along the vertical axis 5 in the walls 13a, 13b of the support beams 1, 2, 3, 4. The width of the elongated through openings corresponds to the width of the opening formed between the walls 13a, 13b. The crossbeams 7, 9, 11, 12 are also essentially flat and board-like, each having tenons at its ends.The tenons of a crossbeam 7, 9, 11, 12 each project into the receiving opening between the walls 13a, 13b of the support beams 1, 2, 3, 4 or into a through-opening 14 of the support beams 1, 2, 3, 4, forming a positive fit. Due to the 90° rotation of each pair of support beams 1, 2, 3, 4 connected by a crossbeam 7, 9, 11, 12, one end (tenon) of a crossbeam 7, 9, 11, 12 is inserted into a through-opening of the walls 13a, 13b, while another, oppositely oriented tenon is inserted into the receiving opening between the walls 13a, 13b of a support beam 1, 2, 3, 4. The twisting of the support beams 1, 2, 3, 4 stiffens the support frame. The crossbeams 7, 9, 11, 12 or pins are preferably secured by friction in the through-openings or receiving openings of the support beams 1, 2, 3, 4. This can be achieved, for example, by clamping or...Screwing takes place in the connection area between the respective support beam 1, 2, 3, 4 and the respective crossbeam 7, 9, 11, 12.

[0047] The crossbeams 7, 9, 11, 12 can perform various functions. For example, the crossbeams 7, 9, 11, 12 can be essentially elongated, so that they run between the respective support beams 1, 2, 3, 4 like a rung. Furthermore, the crossbeams 7, 9, 11, 12 can also be contoured to form an attachment point for a cable. As can be seen in the figure, several first crossbeams 7 and second crossbeams 9 each have circular segment-like recesses at their edges, which, when arranged in the opposite direction to a first crossbeam 7 or second crossbeam 9, define parts of a circular opening. Cables with complementary cross-sections can be clamped between these recesses. An addition to the support frame according to Fig. 1 with two lines is in the Fig. 2 shown.

[0048] To increase the stability of the support frame, cross plates 15 are attached to the first and second support beams 1, 2, particularly at their ends furthest from the feet 6. The cross plates 15 can be connected to a housing, in particular a transformer housing (see Figure 1). Fig. 4).

[0049] The support arrangement or frame should preferably be electrically insulating. This can be achieved, for example, by having at least electrically insulating sections in the support frame to prevent stray current paths. It is advantageous for the support frame to be made of electrically insulating material. The use of electrically insulating plastics for the support beams 1, 2, 3, 4 and crossbeams 7, 9, 11, 12 is preferred. In particular, other elements provided for fastening and connecting the support beams 1, 2, 3, 4 and crossbeams 7, 9, 11, 12, such as bolts, screws, washers, etc., can also be electrically insulating. Cellulose fibers, shaped accordingly, have also proven suitable.Preferably, for example, wood or pressed chipboard elements can be provided for the formation of support beams 1, 2, 3, 4, crossbeams 7, 9, 11, 12 as well as cross flange 15 and other fastening means.

[0050] The Fig. 2 shows a changed perspective on the [unclear] from the Fig. 1. Known support arrangement. The support frame is now supplemented with a first conductor 16 and a second conductor 17. The first conductor 16 and the second conductor 17 can be transformer leads. The first and second conductors 16, 17 are laid such that first crossbeams 7, located between the first and second support beams 1, 2, are arranged with the respective circular recesses around the conductors 16, 17 in the manner of a collar. The conductors 16, 17 thus penetrate the first layer 8, which is formed between the first support beam 1 and the second support beam 2 with the first crossbeams 7 located in the first layer 8. The first conductor 16 and the second conductor 17 are each designed as leads that pass through a wall of a transformer tank via so-called open-air penetrations.The conductors 16 and 17 are designed such that a centrally guided phase conductor is surrounded by solid insulation, which, for example, has several barriers, with channels remaining between the barriers that can be flooded with a fluid. Accordingly, the electrically insulating barriers engage with the crossbeams 11 and 9, so that, due to the electrically insulated design of the support arrangement, short-circuiting or the formation of short-circuit current paths is prevented. The second conductor 17 is guided such that it is deflected within the support frame in the direction of the vertical axes 5. After passing the first crossbeams 7, the first conductor 16 is deflected by 90° between the first support beam 1 and the second support beam 2, such that it is fixed between the second crossbeams 9, which connect the second support beam 2 and the third support beam 3.

[0051] In the Fig. 3 is the perspective of the support arrangement as in the Fig. 2 continued, with a first support frame as in the Fig. 1 and Fig. 2 shown is connected to a second support frame via a lashing. The first and second support frames according to Fig. The three frames are constructed identically and aligned with each other. Support beams of the first frame are connected to adjacent support beams of the second support frame. Longitudinal flanges 18 are used for lashing, preferably connecting aligned crossbeams of the first and second support frames. The first line 16 is, as in the Fig. 2 and Fig. As shown in Figure 3, the first line is guided and deflected by 90° in a horizontal plane through the first support frame and is also fixed to the second support frame via crossbeams located there. Inside the box-shaped second support frame, a deflection of the first line 16 towards the vertical axes 5 of the support beams is provided. In addition to the features shown in the Fig. 1 and Fig. The two not shown extensions of the first line 16 and the second line 17 in the vertical direction are on a pedestal (cf. Fig. 1 and Fig. 2) Electrically insulating barriers are arranged concentrically surrounding the first and second support frames, respectively, around the first and second conductors 16 and 17. Increased electrical strength can be achieved via these barriers, and a dielectrically reinforced space can be used to connect, for example, an electrically conductive coupling element for integrating or connecting the conductors 16 and 17 to an active component, such as the coils of a transformer.

[0052] The in the Fig. 1 and Fig. 2. Support arrangement shown with a support frame or the one shown in the Fig. The support arrangement shown in Figure 3, with two support frames, is schematically depicted in a cutaway view of transformer 20 in the Fig. Figure 4 shows that the transformer 20 is a so-called high-voltage transformer, which can be used in particular for high-voltage direct current transmission equipment. The transformer 20 has a transformer tank 21. The transformer tank 21 is fluid-tight and, for example, made of a grounded metal. An active part of the transformer 20 is arranged inside the transformer tank 21. The active part has, for example, a magnetic core 22 and a coil 23. The magnetic core 22 serves to couple the magnetic fields of several coils 23 in order to reduce leakage flux. The active part of the transformer 20 is electrically insulated from the transformer tank 21. A support arrangement, as shown in Figure 4, is arranged in a space between the active part of the transformer and the passive part (transformer tank 21) of the transformer 20. Fig. 1 and Fig. 2 or 3 is known. The support arrangement is connected to the passive part of the transformer 20 via transverse brackets 15. Alternatively or additionally, it can also be provided that the transverse brackets 15 are connected to the active part of the transformer 20. The support arrangement according to Fig.4 stands with its feet 6 on the bottom of the transformer tank 21. Pipe stubs are mounted in the wall of the transformer tank 21, inside which the first and second lines 16 and 17 run, respectively. The free ends of the pipe stubs are equipped with so-called free-air penetrations, by means of which the lines 16 and 17, located inside the transformer tank 21, can be routed through a wall of the transformer tank 21 to the outside. The interior of the transformer tank 21 is filled with an electrical insulating fluid, for example, an insulating oil or an insulating ester. Accordingly, the insulating fluid surrounds the active part of the transformer 20 as well as the support frame, which is located inside the transformer tank 21. The barriers or channels between the barriers around the lines 16 and 17 are also filled with the electrically insulating fluid.The support arrangement, which is located inside the transformer tank 21, is also completely surrounded and flushed with an electrically insulating fluid.

[0053] Instead of using a liquid insulating medium, the use of an electrically insulating gas is also possible alternatively or section by section inside the transformer tank 21.

Claims

[1] Support arrangement for a conductor (16, 17) of a transformer (20) with a support frame comprising a first support beam (1) and a second support beam (2) which are connected to each other via at least a first crossbeam (7), characterized by , that a third support beam (3) is connected to the second support beam (2) via a second crossbeam (9), wherein the first support beam (1) and the second support beam (2) are located in a first layer (8) and the third support beam (3) and the second support beam (2) are located in a second layer (10) and the layers (8, 10) intersect each other, wherein the second support beam (2) is formed as a double wall, and the first crossbeam (7) projects into a receiving opening located between walls (13a, 13b) of the second support beam (2) and the second crossbeam (9) engages in a through-opening (14) recessed into a wall (13a, 13b). [2] Support arrangement according to claim 1, characterized by that the support frame is a box frame. [3] Support arrangement according to claim 1 or 2, characterized by , that the first traverse (7) has an attachment point for a first line (16) and the second traverse (9) has an attachment point for the first line (16). [4] Support arrangement according to any one of claims 1 to 3, characterized by , that in one revolution around the support beams (1, 2, 3,4) a sequence of crossbeams (7, 9, 11, 12) occurs between the support beams (1, 2, 3, 4). [5] Support arrangement according to any one of claims 1 to 4, characterized by , that a fourth support beam (4) is connected to the third support beam (3) via a third crossbeam (11) and to the first support beam (1) via a fourth crossbeam (12). [6] Support arrangement according to any one of claims 1 to 5, characterized by that the support frame is essentially rectangular and box-shaped. [7] Support arrangement according to any one of claims 1 to 6, characterized by, that the support beams (1, 2, 3, 4) are arranged at the vertices of a polygon, in particular a triangle or a quadrilateral. [8] Support arrangement according to any one of claims 1 to 7, characterized by , that the support beams (1, 2, 3, 4) have a substantially rectangular outline in cross-section, wherein two support beams (1, 2, 3, 4) which are connected to each other via a crossbeam (7, 9, 11, 12) face each other a short and a long rectangular side. [9] Support arrangement according to any one of claims 1 to 8, characterized by , that at least one of the crossbeams (7, 9, 11, 12) is positively fitted into a recess of a supporting beam (1, 2, 3, 4). [10] Support arrangement according to any one of claims 1 to 9, characterized by , that at least one of the support beams (1, 2, 3, 4) is double-walled, with a receiving opening for a crossbeam (7, 9, 11, 12) arranged between the walls (13a, 13b). [11] Support arrangement according to any one of claims 1 to 10, characterized by , that a through-opening (14) for receiving a crossbeam (7, 9, 11, 12) is embedded in a wall (13a, 13b) of a support beam (1, 2, 3, 4). [12] Support arrangement according to any one of claims 1 to 10, characterized by , that the support frame is connected to an active part (22, 23) of a transformer (20), in particular via a transverse tab (15). [13] Support arrangement according to any one of claims 1 to 12, characterized by , that the support frame is connected to a passive part (21) of a transformer (20), in particular via a transverse tab (15). [14] Support arrangement according to any one of claims 1 to 13, characterized by that the support frame has an electrically insulating effect. [15] Support arrangement according to any one of claims 1 to 14, characterized by that a first support frame and a second support frame are joined together with each other. [16] Transformer (20) comprising an active part (22, 23) which is arranged surrounded by a passive part (21), characterized by , that a support arrangement according to one of claims 1 to 13 is arranged between the active part (22, 23) and the passive part (21). [17] Transformer (20) according to claim 16, characterized by , that at least one output (16, 17) of the transformer (20) is intercepted at the support arrangement.

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