Modular spacer bar arrangement for a barrier system of a tubular electrode

Abstract

The invention relates to a spacer strip arrangement (1) for a barrier system (69) of a tubular electrode (71). In order to be able to dispense with complex reworking steps of spacer strips (9), in particular by machining processes, during the assembly of barrier systems (69), a spacer strip arrangement (1) comprising at least one base strip (3) and at least one filler strip (5) is provided, wherein the at least one base strip (3) has, on its longitudinal side, a contact side (21) designed to bear against an outer side (17) of a first barrier (19) and a first connecting side (23) opposite the contact side (21), and the at least one filler strip (5) has, on its longitudinal side, a support side (31) designed to bear against an inner side (29) of a second barrier (19) and a second connecting side (35) opposite the support side (31) and designed to connect to the first connecting side (23).

Description

[0001] The invention relates to a spacer bar arrangement for a barrier system of a tubular electrode. The invention also relates to a spacer bar, a modular system for assembling at least one spacer bar arrangement, a barrier system, a tubular electrode, and a method for positioning two tubular barriers of a barrier system relative to one another.

[0002] Tubular electrodes typically have a tubular geometry. This is often composed of bends, tubes, and end elements. Insulation made of paper or pressboard is preferably applied to this. A system of barriers, preferably made of pressboard, can be arranged on top of this. The barrier system can be constructed from tubular barriers of different diameters arranged one inside the other, in particular nested. The barriers are often arranged coaxially with one another. The individual barriers are preferably spaced apart by spacer strips.

[0003] The tubular electrode, for whose barrier system the spacer strip arrangement according to the invention is preferably provided, can in particular be a tubular electrode for a line configuration in a high-voltage device. In particular, the tubular electrode can be provided for the line configuration of a coil winding in a transformer or a choke. Particularly preferably, the tubular electrode is provided for the line configuration of a valve winding of a component of a high-voltage direct current (HVDC) transmission system.

[0004] Spacer strips are usually cut from chipboard in a carpentry shop and milled on a strip machine to be convex / concave and with a step to extend the sliding distance.

[0005] Due to tolerances in diameter, wall thickness, and dimensional stability of the chipboard barriers, the prefabricated spacer strips often have to be individually adjusted to the specific conditions during installation. This is done, for example, by planing, sanding, and cutting. These work steps incur additional costs.

[0006] It is therefore the object of the invention to provide a spacer bar arrangement by means of which the adjustment of the spacer bars on site, in particular by machining processes, can be dispensed with.

[0007] This object is achieved by a spacer bar arrangement according to the invention according to claim 1, as well as by a spacer bar according to claim 9, a modular system according to claim 10, a barrier system according to claim 11, a tubular electrode according to claim 12 and a method according to claim 13. Advantageous embodiments are the subject of the subclaims.

[0008] According to the invention, it is therefore provided that the spacer strip arrangement comprises at least one base strip and at least one filler strip, wherein the at least one base strip has a longitudinal side designed to bear against an outer side of a first barrier and a first connection side opposite the longitudinal side of the base strip, and the at least one filler strip has a longitudinal side designed to bear against an inner side of a second barrier and a second connection side opposite the longitudinal side of the support side and designed to connect to the first connection side.

[0009] The spacer strip according to the invention is provided with a spacer strip arrangement according to the invention, wherein the at least one filler strip is integrally connected, in particular glued, to the at least one base strip. The at least one filler strip can be positively connected to the at least one base strip as an alternative to or in addition to the integral connection.

[0010] For the modular system according to the invention for assembling at least one spacer strip arrangement, it is provided that the modular system comprises a plurality of filler strips of different heights and / or widths and a plurality of base strips of different heights and / or widths. A spacer strip arrangement according to the invention can then be assembled from these, and a spacer strip according to the invention can then be produced therefrom.

[0011] The barrier system according to the invention is provided to comprise a plurality of nested barriers, in particular barriers arranged coaxially with one another, wherein at least one spacer strip according to the invention is arranged between at least two directly consecutive barriers.

[0012] For the tubular electrode according to the invention, which is in particular a tubular electrode of a line design in a high-voltage device, for example a valve winding of a component of a system for high-voltage direct current transmission (HVDC), it is provided that the tubular electrode is made of an electrically conductive material and is surrounded at least in sections by a barrier system according to the invention.

[0013] The method according to the invention for positioning two tubular barriers of a barrier system relative to each other by means of a spacer bar arrangement according to the invention comprises the steps: - arranging, and in particular gluing, a base strip on a, in particular convex, outer side of a first of the two barriers; - Selecting a filler strip of suitable height from a range of filler strips; - connecting the filler strip to the base strip, in particular by form fit and / or material fit; and - Attaching the second barrier outside the first barrier, wherein an inner side of the second barrier is brought into contact with the support side of the filling strip, in particular to the installation.

[0014] The modular and at least two-part design of the spacer bar according to the invention eliminates the need for the aforementioned work steps for on-site adjustment of the bar, particularly time-consuming machining processes. Instead, a first barrier can be provided with the base bar. Subsequently, at least one filler bar can be selected to suitably fill the gap between the base bar and the second barrier. The spacer bar, composed of at least one base bar and at least one filler bar, is then a perfect fit and does not require any complex adjustment work.

[0015] The solution according to the invention can be further improved by various, individually advantageous, and combinable embodiments. These embodiments and their associated advantages are discussed below.

[0016] According to a first advantageous embodiment of the spacer strip arrangement according to the invention, the connecting sides of the base strip and the filler strip can be shaped to complement each other. This allows a precise fit of the filler strip on the base strip to be achieved.

[0017] In particular, the connecting sides of the base strip and the filling strip can have form-locking elements that are complementary to one another.

[0018] Preferably, the connecting side of the base strip or the filling strip is provided with at least one groove structure in which at least a portion of the at least one other strip can be received, in particular on its connecting side.

[0019] Preferably, a groove is provided on the connecting side of the base strip. The groove can extend over the entire length of the base strip.

[0020] The at least one filler strip can be provided with a structure that fits into the groove. Particularly preferably, the at least one filler strip itself can be received in the groove on its connecting side. For this purpose, the at least one filler strip can be shaped narrower than the base strip. The width of the filler strip can correspond to the width of the groove.

[0021] Alternatively or in addition to the groove structure, the strips can be provided with other form-fitting elements. For example, the strips can be equipped with complementary plug-in and / or locking elements that allow the strips to be plugged together.

[0022] To improve the fit of the base strip on the outside of a tubular first barrier, its contact side can be provided with a concave cross-section. The cross-section runs transversely to a longitudinal extension of the base strip. The concave shape of the contact side preferably has a radius that is adapted to the radius of the barrier.

[0023] To improve the contact of the support side of the filler strip with the inside of a tubular barrier, the barrier can be provided with a convex cross-section and / or chamfered edges.

[0024] Preferably, both the base strip and the filler strip are made of an electrically insulating material, in particular of pressboard, wood, paper, cardboard or another material, in particular a cellulose-containing material.

[0025] According to a further advantageous embodiment of the spacer strip arrangement according to the invention, it can comprise a continuous base strip and two or more filler strips, the total lengths of which are less than or equal to the length of the base strip. This can facilitate adaptation to the barriers.

[0026] Alternatively, the arrangement can be reversed, meaning there can be a continuous filler bar and several base bars. The shorter bars can have different heights, for example, to compensate for height differences, especially at the barriers.

[0027] The modular system according to the invention can be further improved by providing certain standard widths for the base strip. For example, base strips can be provided in two standard widths, preferably 30 mm and 35 mm. Additionally, the modular system can provide matching filler strips for these base strips. Filler strips with finely graduated heights are preferably provided. For example, the heights of the different filler strips can be graduated in 1 mm increments. The filler strips and the base strips can be provided in standardized lengths, for example, 2000 mm.

[0028] In the barrier system according to the invention, several spacer strips can be installed between two adjacent barriers. These spacer strips can be arranged equidistantly along a circumferential direction. These spacer strips are preferably composed of identical base strips and identical filler strips. In the event that the individual barriers deviate from a hollow cylindrical shape or are not coaxial with one another, the spacer strips between these two barriers can have different dimensions. Preferably, the base strips are each identical but connected to filler strips of different heights.

[0029] To further explain the invention, reference is made to the figures in the following part of the description, from which further advantageous details and possible areas of application of the invention can be seen. The figures are to be understood as examples and are intended to illustrate the nature of the invention, but in no way restrict or exhaustively represent it. The same reference numerals are used for elements with the same structure and / or the same function.

[0030] They show: Fig. 1 A schematic, perspective view of an embodiment of the spacer strip arrangement according to the invention; Fig. 2 a schematic, perspective view of an embodiment of the spacer strip according to the invention; Fig. 3 a cross-section through the spacer bar Fig. 2; Fig. 4 shows a further embodiment of a spacer strip according to the invention; Fig. 5 a cross-section through a barrier system according to the invention; Fig. 6 a barrier system according to the invention in a perspective view; and Fig. 7 a plurality of spacer strips for the barrier system made of Fig. 6.

[0031] In the following, the invention is described with reference to a spacer bar arrangement and a spacer bar made from the spacer bar arrangement with reference to Fig. 1 to 3 explained.

[0032] This shows Fig. 3 a cross-section through the Fig. 2 shown distance bar.

[0033] The spacer strip arrangement 1 shown as an example comprises a base strip 3 and a filler strip 5.

[0034] Base strip 3 and filler strip 5 are designed to be connected to each other. In a connected state 7, as shown in the Fig. 2 and Fig. 3, they together form a spacer bar 9.

[0035] Base strip 3 and filler strip 5 are each elongated and run straight along a respective longitudinal axis 11 and 13, respectively.

[0036] When assembled, the strips 3 and 5, and thus the longitudinal axes 11 and 13, run parallel to each other. The spacer strip 9 extends along a longitudinal axis 15, which runs parallel to the longitudinal axes 11 and 13.

[0037] In the Fig. In the embodiments shown in Figures 1 to 3, the base strip 3, the filler strip 5, and the spacer strip 9 composed thereof are each elongated. This means that the strips 3, 5, 9 are each longer along the longitudinal axes 11, 13, 15 than they are high or wide. However, this is not mandatory. Depending on requirements, at least one of the strips 3, 5, 9 can be shorter than it is wide or high. This will be explained further below with reference to the Fig. 7 received.

[0038] As a further deviation from the exemplary elongated embodiments, the strips 3, 5, and 9 can be curved or bent. This will not be discussed further here.

[0039] The individual strips are described in more detail below. The base strip 3 has a contact side 21 designed to engage an outer side 17 of a first barrier 19.

[0040] A section of a first barrier 19 is in Fig. 3 indicated by dashed lines.

[0041] The contact side 21 is preferably concavely shaped and particularly preferably adapted to the shape of the outer side 17 of the first barrier 19, which is generally hollow-cylindrical.

[0042] The base strip 3 also has a first, or base strip-side, connecting side 23 opposite the contact side 21. Preferably, the connecting side 23 is opposite the contact side 21 in a vertical direction 25, wherein the vertical direction 25 runs perpendicular to the contact side 21 and perpendicular to the longitudinal axis 11.

[0043] The elevation direction 25 is in Fig. 3. The height direction 25 of the base strip 3 coincides in the assembled state 7 with a height direction 27 of the filler strip 5. The height directions 25, 27 run radially to the cylindrical first barrier 19 when the spacer strip 9 is attached to the barrier 19.

[0044] The filling strip 5 has a for contact with the inside 29 of a second barrier 19 (in Fig. 3 indicated by dashed lines) designed support side 31.

[0045] The support side 31 is preferably adapted to the concave shape of the inner side 29 of the second barrier 19. For this purpose, the support side 31 is preferably provided with chamfered edges 33. Alternatively, it can be convex or have rounded edges. With the exception of the support side 31, the filler strip 5 can have an overall rectangular cross-section.

[0046] The filling strip 5 also has a second, or filling strip-side, connecting side 35 opposite the support side 31, in particular opposite in the height direction 27.

[0047] The second connecting side 35 is designed for connection to the first connecting side 23. For this purpose, the connecting sides 23, 35 are preferably shaped complementarily to one another.

[0048] To achieve the complementary design, the base strip 3 is provided with a groove structure 37. The groove structure 37 comprises a groove 39 running parallel to the longitudinal axis 11 in the first connecting side 23.

[0049] The filler strip 5 has a width 41 that is less than or equal to the width 43 of the groove 39. The width 41 is measured in a width direction 45 of the filler strip 5, which runs perpendicular to the longitudinal axis 13 and perpendicular to the height direction 27.

[0050] The width 43 of the groove 39 in the base strip 3 is measured in a width direction 47 of the base strip 3, which runs both perpendicular to the longitudinal axis 11 and perpendicular to the height direction 25 of the base strip 3.

[0051] In order to provide sufficient space for the groove 39, a width 49 of the base strip 3 is necessarily greater than the width 43 of the groove 39 and correspondingly greater than the width 41 of the filler strip 5.

[0052] The groove 39 and the second connecting side 35 of the filling strip 5 represent mutually complementary shaped form-locking elements 51, 53.

[0053] As an alternative to the embodiment described above, the groove 39 can be arranged in the second connecting side 35 of the filler strip. The base strip 3 can then have a structure complementary to the groove 39. In the simplest case, the base strip 3 can be received in the groove 39 on its first connecting side 23. In this case, the width 41 of the filler strip 5 would be greater than the width 49 of the base strip 3.

[0054] A total height 55 of the spacer bar 9 preferably corresponds to a radial distance 57 between the two barriers 19. By selecting the bars 3, 5 with the appropriate heights, the total height 55 of the spacer bar 9 can be adapted to the distance 57.

[0055] In the described embodiment, the total height 55 can be calculated as the sum of the height 59 of the filler strip 5 and the effective height 61 of the base strip 3. The effective height 61 of the base strip is the shortest height between the contact side 21 and a base 63 of the groove 39. This is generally located in the center of the base strip 3 relative to the width direction 47. The heights 59 and 61 are measured along the height directions 25, 27.

[0056] Base strip 3 and / or filler strip 5 are preferably made of an electrically insulating material, in particular pressboard.

[0057] To form the spacer strip 9, the base strip 3 is preferably connected to the filler strip 5 in a form-fitting and material-locking manner. The form-fitting connection is achieved, at least along the width directions 45, 47, by the fit of the filler strip 5 in the groove 39 of the base strip 3. The material-locking connection is preferably achieved by gluing the two strips 3, 5 together in the region of the connecting sides 23, 35.

[0058] In the following, a further embodiment of a spacer bar arrangement 1 according to the invention and a spacer bar 9 formed therefrom are described with reference to the Fig. 4. Only the differences to the one with reference to the Fig. The embodiment described in 1 to 3 has been discussed.

[0059] The Fig. The embodiment shown in Figure 4 has a continuous base strip 3 and two filler strips 5 received in the groove 39 of the base strip 3.

[0060] The first of the two filler bars 5 (in Fig. 4 shown on the left) has a length of 60 and the second of the two filler bars 5 (in Fig. 4 shown on the right) has a length of 62. The sum of the lengths 60 and 62 is less than the length 64 of the base bar 3.

[0061] This arrangement can be particularly advantageous if the two barriers (not shown here) are not precisely coaxially shaped and / or aligned with each other, or if at least one of the barriers deviates from a hollow cylindrical shape. The aforementioned problems can lead to a varying distance 57 between the barriers 19 along the longitudinal axis 15.

[0062] In order to connect both barriers 19 by a spacer bar 9 and to hold them in position despite the above-mentioned conditions, the two filler bars 5 have different heights 59. The height 59 of the Fig. 4 on the left side shown fill bar 5 is greater than the height 59 of the Fig. 4 fill bar 5 shown on the right.

[0063] The different heights 59 of the filler bars 5 allow deviations in the distance 57 of the barriers 19 to be compensated.

[0064] A gap 65 can extend between the two filling strips 5.

[0065] The higher of the two filler strips 5 can be flattened in the direction of the flatter filler strip 5, i.e., have a chamfer 67, by which the height 59 of the higher filler strip 5 is lowered to the height 59 of the flatter filler strip 5. The chamfer 67 can extend along the longitudinal axis 13 of the filler strip 5 in a chamfer section 68.

[0066] The chamfer 67 prevents an abrupt transition between the filler strips 5. In particular, this makes it easier to slide a barrier 19 onto the spacer strip 9.

[0067] The Fig. The spacer bar 9 shown in Figure 4 can have any number of filler bars 5 with any different heights 59, depending on the requirements specified by the barriers 19 to be installed.

[0068] Fig. 5 shows an exemplary embodiment of a barrier system 69 according to the invention and a tubular electrode 71 arranged inside the barrier system 69.

[0069] The barrier system 69 comprises a plurality of barriers 19 arranged substantially coaxially with one another. The barriers 19 and the tubular electrode 71 are arranged around a common axis 73.

[0070] Viewed from the axis 73 in the radial direction 75 outwards, the tubular electrode 71 initially extends around the axis 73. Further in the radial direction 75, the barriers 19 follow, with the barriers 19 having larger diameters 77 with increasing distance from the axis 73.

[0071] The tubular electrode 71 is made of a conductive material. Preferably, the tubular electrode 71 is made of a metal tube. Alternatively, the tubular electrode 71 can be made of a conductive foil, in particular a metal foil or a metal-containing foil.

[0072] At least one spacer bar 9 is arranged between each two barriers 19 following one another in the radial direction 75 in order to hold the barriers 19 in their position.

[0073] The distances 57 between two adjacent barriers 19 increase with increasing distance from the tubular electrode 71. For this reason and due to the barrier diameters 77 increasing from the inside to the outside, the spacer bars 9 differ between the different barrier pairs.

[0074] A modular system according to the invention can have base strips 3 with different contact sides 21, which are adapted to the respective barrier diameters 77.

[0075] In addition, the modular system can accommodate matching filler strips 5 in different heights 59 in the grooves 39 of the base strips 3.

[0076] This allows precisely fitting spacer bars 9 to be manufactured on-site by selecting the appropriate bars 3 and 5. Machining processes for adjusting the bar heights during installation of the barrier system 69 can therefore be dispensed with.

[0077] The spacer bar arrangement 1 according to the invention also allows an uneven distance 57 between two adjacent barriers 19 to be selected by selecting the appropriate bars 3 and 5, in particular by selecting filler bars 5 of suitable heights 59.

[0078] Below is a barrier system 69 with reference to the Fig. 6 and Fig. 7, where for the sake of brevity the differences to the one with reference to Fig. 5 described barrier system 69. Fig. 7 shows the spacer bars 9 of the barrier system 69 from Fig. 6.

[0079] The barrier system 69 extends around a tubular electrode 71 which, in contrast to the previously described embodiments, does not have a completely straight course, but has curved sections 79 and straight sections 81 which are arranged alternately.

[0080] In the rectilinear sections 81, the spacer strips 9 are elongated and designed essentially as in the embodiment described with reference to Figures 1 to 3.

[0081] A cross-section through one of the straight sections 81 would result in an arrangement according to the principle of the Fig. 5 described embodiment of the barrier system 69.

[0082] In the curved sections, the spacer bars 9 can have a length that is less than or equal to their width and / or height. This allows the radii of the barriers 19 to be taken into account in the curved sections 79.

[0083] By selecting suitable base strips 3 and filler strips 5, the curved course of the barrier system 69 can be taken into account. In this case, too, complex reworking of the strips 3 and 5 for on-site adjustment can be avoided. Reference symbol 1 spacer bar arrangement 3 Base bar 5 Fill bar 7 composite state 9 Spacer bar 11 Longitudinal axis of the base bar 13 Longitudinal axis of the filling strip 15 Longitudinal axis of the spacer bar 17 Outside of a barrier 19 Barrier 21 Investment page 23 first connection page 25 Height direction of the base bar 27 Height direction of the filler bar 29 Inside of a barrier 31 Support side 33 edges 35 second connecting side 37 Groove structure 39 groove 41 Width of the filler bar 43 Width of the groove 45 Width direction of the filler bar 47 Width direction of the base bar 49 Width of the base bar 51.53 Form-locking elements 55 Total height of the spacer bar 57 Distance between barriers 59 Height of the filler bar 60, 62 Length of the filler bar 61 effective height of the base bar 63 Bottom of the groove 64 Length of the base bar 65 gap 67 chamfer 68 Chamfer section of the filler strip 69 Barrier system 71 tubular electrode 73 common axis 75 radial direction 77 barrier diameters 79 winding section 81 straight section

Claims

[1] Spacer strip arrangement (1) for a barrier system (69) of a tubular electrode (71), comprising at least one base strip (3) and at least one filler strip (5), wherein the at least one base strip (3) has, on its longitudinal side, a contact side (21) designed to bear against an outer side (17) of a first barrier (19) and a first connection side (23) opposite the contact side (21), and the at least one filler strip (5) has, on its longitudinal side, a support side (31) designed to bear against an inner side (29) of a second barrier (19) and a second connection side (35) opposite the support side (31) and designed to connect to the first connection side (23). [2] Spacer strip arrangement (1) according to claim 1, wherein the connecting sides (23, 35) of the base strip (3) and the filler strip (5) are shaped complementarily to one another. [3] Spacer strip arrangement (1) according to claim 2, wherein the connecting sides (23, 35) of the base strip (3) and the filler strip (5) have mutually complementary shaped form-locking elements (51, 53). [4] Spacer strip arrangement (1) according to claim 3, wherein the connecting side (23) of the base strip (5) or the connecting side (35) of the filler strip (5) is provided with at least one groove structure (37) in which at least a portion of the other strip (5, 3) can be received. [5] Spacer strip arrangement (1) according to one of the preceding claims, wherein the contact side (21) of the base strip (3) is provided with a concave cross-section. [6] Spacer strip arrangement (1) according to one of the preceding claims, wherein the support side (31) of the filling strip (5) is provided with a convex cross-section or with chamfered edges (33). [7] Spacer strip arrangement (1) according to one of the preceding claims, wherein both the base strip (3) and the filler strip (5) are made of an electrically insulating material. [8] Spacer strip arrangement (1) according to one of the preceding claims, wherein the spacer strip arrangement (1) has a continuous base strip (3) and two or more filler strips (5), the total lengths (60, 62) of which are less than or equal to the length (64) of the base strip (3). [9] Spacer strip (9) comprising a spacer strip arrangement (1) according to one of the preceding claims, wherein the at least one filling strip (5) is connected to the at least one base strip (3) in a materially bonded and / or form-fitting manner. [10] Modular system for assembling at least one spacer strip arrangement (1) according to one of the preceding claims, wherein the modular system comprises a plurality of filler strips (5) of different heights (59) and / or widths (41) and a plurality of base strips (3) of different heights (61) and / or widths (49). [11] Barrier system (69) comprising a plurality of nested barriers (19), wherein at least one spacer strip (9) according to claim 9 is arranged between at least two directly consecutive barriers (19). [12] Tubular electrode (71), in particular tubular electrode (71) of a line design in a high-voltage device, wherein the tubular electrode (71) is made of an electrically conductive material and is surrounded at least in sections by a barrier system (69) according to claim 11. [13] Method for positioning two tubular barriers (19) of a barrier system (69) relative to each other by means of a spacer bar arrangement (1) according to one of claims 1 to 8, comprising the steps: - arranging a base bar (3) on an outer side (17) of a first of the two barriers (19), - Selecting a filler strip (5) with a suitable height (59) from a range of filler strips (5), - Connecting the filler strip (5) to the base strip (3), - Attaching the second barrier (19) outside the first barrier (19), wherein an inner side (29) of the second barrier (19) is connected to the support side (31) of the filling strip (5).

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