Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G5/00—Installations of bus-bars
  • H02G5/06—Totally-enclosed installations, e.g. in metal casings
  • H02G5/066—Devices for maintaining distance between conductor and enclosure
  • H02G5/068—Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures

Definitions

• the invention relates to an arrangement with a
• Disk insulator and having a first conductor piece, which points of contact in the direction of a disk axis in a central zone on both sides of the disk insulator so ⁇ as with a relation to the central zone a reduced wall thickness having transition zone which connects the central Zo ⁇ ne with an edge region of the disk insulator.
• the invention has for its object to provide a Anord ⁇ tion with a disk insulator, which can be used with reduced material usage and reduced external dimensions in multi-phase energy transmission systems.
• this object is achieved in an arrangement with a disc insulator of the type mentioned in that a second conductor piece in the direction of the disc Has in the central zone on both sides of the disc insulator contact points.
• the electrically insulating effect of the disc insulator is utilized in an improved manner.
• the first, the second and the third conductor piece can apply the same electrical potential and to use all three conductor pieces to form a common energy transmission path.
• ⁇ through a high current can be distributed to the three conductor pieces. Due to the increased surface area of the three conductor pieces in comparison to a cross-section-like single conductor, the current generated by a conductor of electric current can Steady current heat improved delivered to the environment who ⁇ .
• a so-called skin effect can be observed.
• the edge portion of the disk insulator serves to limit and terminate the
• Disc insulator In the edge region of the disc insulator may advantageously have a comparable or the same wall ⁇ strength, as the central zone. At least the edge area should have a reinforced wall opposite the transition zone.
• sealing elements can be further arranged to seal the disc insulator, for example, to a flange.
• the edge region of the disc insulator is enclosed by a fitting body.
• the fitting body can be, for example, a metallic ring with which the
• Disc insulator is connected gas-tight.
• the metallic ring gives the edge region of the disk insulator and thus the ge entire disk insulator additional stability.
• recesses can be provided which extend substantially in the direction of the disk axis and through which, for example, for loading Verbolzungen ⁇ consolidate the disk insulator can be hin mange ⁇ leads to a flange.
• arrangements according to the invention with a disk insulator in gas-insulated Switchgear used.
• electrically active conductors, such as busbars or switchgear, within a hermetically sealed Kap ⁇ selungsgebliuses are arranged, wherein the encapsulating housing is filled in its interior with an insulating gas.
• insulating ⁇ gas for example, sulfur hexafluoride, nitrogen or other suitable electronegative gases can be used. Advantage ⁇ way legally should insulating gases are under increased pressure. In such a case, the encapsulating housings are designed as pressure vessels.
• the arrangement may be provided with a disk insulator part of a pressure-tight barrier of a Druckgasbe ⁇ matesers or even within a printer container to Kapselungsgephaseusen reasonable.
• a further advantageous embodiment can provide that the transition zone has a circumferential groove around the disc axis.
• a transition zone with reduced wall thickness By providing a transition zone with reduced wall thickness, it is possible to manufacture the disc insulator with reduced material usage.
• a radial distance is increased by the circumferential groove on the surface of the disc insulator. This makes it difficult to form a creeping current path extending along the surface.
• the groove can be flushed with an electronegative gas. This is particularly in gasiso ⁇ profiled switchgear advantageous which are filled with insulating gas under increased pressure standing.
• the increased Iso ⁇ liergasvolumen in the surface region of the disc insulator improves the insulation resistance of the entire assembly. Compared to a solid insulation, a gaseous insulation has the advantage that in the case of electrical Breakthroughs automatically regenerate the gas insulation.
• a disk insulator does not have such an automatic Regenera ⁇ tion after an electrical breakdown.
• mutually opposite groove walls of the circumferential groove have a spacing which corresponds approximately to the wall thickness of the disk insulator in the bottom region of the circumferential groove.
• the circumferential groove can be equipped with different groove cross-sections. It is particularly advantageous if the distance of the groove walls, starting from the bottom area increases, so that there is an approximately trapezoidal cross-section.
• a flared from the bottom region to the edges of the groove walls in the direction of the opening groove Pro ⁇ fil further has the advantage that such grooves are re- tively easy to manufacture.
• the groove beispielswei ⁇ se be machined with material-removing tools from the Scheibenisola ⁇ gate.
• the disk insulator is produced, for example, in a casting process and during the casting of the disk insulator, the groove is formed.
• a further advantageous embodiment of the invention can provide that the three conductor pieces are arranged such that contact points located on one side of the disk insulator depict corner points of an equilateral triangle.
• the conductor pieces should be formed, for example, in the form of rotationally symmetrical bodies which contact the front sides of the rotationally symmetrical body. exhibit points.
• barrel-shaped or waisted shapes of the conductor pieces are connected to a large lateral surface to shipping ⁇ hen, which can be embedded in the disk insulator and a rigid angle connected thereto.
• the arrangement of the contact points should be provided in such a way that a common point of intersection of side halves lying on the sides of the equilateral triangle lies on the disk axis of the disk insulator.
• all contacting points are arranged at the same distance from the disk axis of the disk insulator spaced and evenly distributed on a circular path.
• Such an arrangement has as a further advantage that when using the arrangement with a disk insulator in a multi-phase AC voltage system in which the e- lectric potentials of the individual conductor pieces are different from each other, there is an electromagnetically favorable arrangement.
• a further advantageous embodiment can provide that at least one web piercing a groove connects the central zone with the edge region.
• the web may have an approximately equal wall thickness, as the central zone of the disc insulator.
• the web is merely a reinforcement within the groove and the groove has a reduced depth in the region of the web.
• nisse can advantageously be provided to round the groove in the region of the web and to provide dome over ⁇ transitions.
• the web is aligned radially to the disk axis.
• the web is arranged in the manner of a side bisector to the equilateral triangle.
• Such an arrangement has the advantage that the web has the largest possible distance to the contact points of the conductor pieces.
• ⁇ gene is also a part of a circumferential groove provided which can be flooded with an insulating gas.
• Narrowing points between contacting points and the edge area represent critical sections which are furthermore protected by the groove before the formation of creepage paths and flashovers.
• a plurality of identically aligned webs subdivide the groove into a plurality of segment-shaped sections.
• the circumferential groove is divided into several segments.
• it is particularly advantageous ⁇ to provide three webs, which are aligned in the radial direction to the disk axis of the disk insulator and aligned at the side bisecting in the radial direction to the disk axis are.
• Segment-shaped portions of the circumferential groove are entspre ⁇ sponding portions on a circular path.
• the segments should be sections of circles with equal radii.
• the segment-shaped sections are dimensioned similar and designed such that they are arranged congruent on both sides of the Scheibenisola ⁇ sector with respect to the disk axis.
• a further advantageous embodiment can provide that opposite webs are arranged with respect to the disk axis on both sides of the disk insulator.
• a double-sided provision of webs additionally increases the resistance of the arrangement with the disk insulator. Regardless of the direction in which the disk insulator is to withstand increased pressure, this can be used in pressure vessels.
• the arrangement can be arranged with a disk insulator, for example, as a gas-tight barrier between two adjacent gas chambers.
• active parts can be contacted with each other electrically. It can be provided that in one gas chamber, a higher pressure than in the other gas chamber prevails, so that a pressure load of the disk insulator is provided only in one direction.
• a sudden pressure loss in the gas space with increased pressure occurs, so that the disk insulator is suddenly loaded from the opposite direction with increased pressure.
• a further advantageous embodiment can provide that the central zone, the transition zone and the edge region are sections of an electrically insulating body.
• the central zone of the transition zone and the edge region are formed as a common electrically insulating body.
• rational manufacturing methods can be used.
• the disc insulator can be manufactured by casting. Thus, high-quality surfaces can be formed and expensive reworking is avoided.
• the edge area has a substantially circular contour, which has at least one Medicaretre ⁇ tendency in the radial direction conformation.
• an anti-rotation is formed by the Anformung.
• a diametrically opposed recess may be arranged on the latter, in which engages the Anfor ⁇ determination. This makes it possible to complicate a relative movement between the disc insulator and fitting body.
• a single or multiple projections are integrally formed on the edge region.
• a further advantageous embodiment can provide that the Anformung is aligned coaxially with a web.
• Figure 1 shows an arrangement of a first embodiment variant of a disc insulator
• Figure 2 shows a section through the first embodiment variant of a disc insulator along an axis A-A, the
• Figure 3 is a view of an arrangement with a second embodiment variant of a disc insulator and Figure 4 is a section along an axis B-B through the arrangement with a second embodiment variant of a disc insulator.
• the disc insulator 1 shows a plan view of an arrangement with egg ⁇ ner first embodiment variant of a disc insulator 1.
• the disc insulator 1 has a substantially disc-shaped structure, wherein it has an approximately circular outer contour.
• the first embodiment variant of the disk insulator 1 is constructed concentrically to a disk axis 2.
• Concentric with the wheel axis 2, a central ⁇ rale zone 3 is arranged.
• the central zone 3 preferably has a circular contour.
• the central zone 3 has wei ⁇ terhin a constant wall thickness (see also FIG. 2).
• the transition zone 4 is designed substantially annular and has a relation to the central zone 3 reduced wall thickness.
• edge region 5 connects.
• the edge region 5 in turn has a wall which is reinforced with respect to the transition zone 4.
• front- geous have the central zone 3 and the edge portion 5 at ⁇ approaching the same wall thickness.
• edges region 5 holders 6 which examples are 2 circular ⁇ shape extending circumferentially of the disc the disc axis denote insulator. 1
• elastic sealing elements are used, so that the first variant of the disc insulator 1 sealed against a GeHouseab ⁇ cut, for example, a flange, can be pressed.
• the valve body 7 is designed annular and protects the first variant of the disc insulator 1 in the radial direction.
• the fitting body 7 is designed such that, starting from a radially encircling ring, parts of the edge region 5 are embraced on both sides of the disk insulator 1. Furthermore, in the fitting body 7 aligned recesses 8 are provided substantially parallel to the disc axis 2, by means of which the first embodiment variant of
• Disk insulator 1 on a housing assembly, for example, on a flange can be fixed.
• clamping elements such as screws can reach through the recesses 8.
• the first variant of the disc insulator 1 at least one Anformung 9 extending in the radial direction with respect to the disc axis 2 Anformung, which breaks through the substantially circular contour of the disc insulator 1.
• the Anformung 9 is mounted in a recess of the fitting body 7 and serves as a rotation between the Armaturgro- by 7 and the first variant of the disc insulator 1. It can be provided, for example, that the Scheibenisola ⁇ tor is gas-tight connected to the valve body.
• the transition zone 4 is in the present case by a first circumferential groove 10a and a second circumferential groove 10b ge ⁇ forms.
• the two grooves 10a, 10b are designed identically and congruent on two opposite sides of the disc insulator 1 relative to the disc axis 2 is arranged ⁇ .
• the transition zone 4 connects the edge region 5 with the central zone 3 of the first variant of Scheibenisola ⁇ sector 1.
• the grooves 10a, 10b act on the surface creep path extending, so that the emergence of unwanted leakage currents is counteracted.
• the wall thickness in the bottom region of the grooves 10a, 10b corresponds approximately to the groove width.
• a groove cross section is a groove bottom is selected from he ⁇ further Direction cross section. As a result, the receiving volume for insulating gas within the groove is increased. Edge and bottom portions of the grooves 10a, 10b are rounded.
• first conductor piece IIa In the central zone continue to a first conductor piece IIa, a second conductor pieces IIb and a third conductor ⁇ piece llc arranged.
• the conductor pieces IIa, IIb, 11c pass through the disk insulator 1 in the direction of the disk axis 2.
• points 12a, 12b, 12c, 12d integrated to the respective conductor pieces IIa, IIb, llc.
• the conductor pieces IIa, IIb, llc are formed as rotationally symmetrical body, which have a sidecut in its central region of the lateral surface. By the sidecut the conductor pieces IIa, IIb, llc are connected angle stiff with the first variant of the disc insulator 1.
• the conductor pieces IIa, IIb, llc are gas-tight in the first Va ⁇ variant of the disc insulator 1 embedded.
• the PLEASE CONTACT ⁇ approximately points 12a, 12b, 12c, 12d are so obtainedstal ⁇ tet that in the conductor pieces IIa, IIb, IIc, respectively sackarti- ge threaded holes are introduced, however, the conductor pieces IIa, IIb, llc not fully enforce.
• a gas-tight barrier is also provided in the region of the conductor pieces IIa, IIb, IIc.
• the contacting points 12a, 12b, 12c, 12d of the conductor pieces IIa, IIb, llc are substantially provided with a circular contour whose centers are distributed so angeord ⁇ net that the contact points 12a, 12b, 12c, 12d and the conductor pieces IIa, IIb , llc represent the vertices of an equilateral triangle. Furthermore, the contacting points 12a, 12b, 12c, 12d are all equidistantly spaced from the disc axis 2. The conductor pieces IIa, IIb, llc and their contacting points 12a, 12b, 12c, 12d are thereby moved away from the disk axis 2 in the central zone 3 and displaced in the direction of the transition zone 4.
• FIG. 2 shows the arrangement known from FIG. 1 in a section along an axis A-A.
• both the central zone 3, the transition zone 4 and the edge region 5 of the first th variant of the disc insulator 1 part of a one-piece insulating part.
• the first variant of the disc insulator 1 can be cast into the fitting body 7 in a casting process using the fitting body 7 as a casting mold. During this casting, the conductor pieces IIa, IIb, llc are embedded in the first variant of Scheibenisola ⁇ sector 1.
• FIG. 3 shows an arrangement with a second variant of a disk insulator 1a.
• a second variant of a disk insulator 1a With regard to the on ⁇ division of the disk insulator Ia in a central zone 3, egg ⁇ ne transition zone 4, an edge region 5 extending coaxial with a wheel axis 2 and are surrounded by a valve body 7, Ia result in the second variant of the disk insulator no Differences to the first Varian ⁇ te of the disc insulator 1 as shown in Figures 1 and 2 be ⁇ known. Therefore, the same reference numerals are provided in the following also equivalent components, as known from the description part to Figures 1 and 2.
• valve body 7 As a valve body 7 turn the known from Figures 1 and 2 valve body is used.
• the transition zone 4 of a first web 13a, a second web 13b and a third web 13c is broken.
• the webs 13a, 13b, 13c are arranged evenly around the disc axis 2 ver ⁇ divides.
• the webs 13a, 13b, 13c in each case the ⁇ same wall thickness as the central zone 3 (cf. FIG. 4).
• the circumferential grooves 10a, 10b completely underbro ⁇ chen by the webs 13a, 13b, 13c.
• the segment-shaped groove portions 1OaI, 10a2, 10a3 are radially aligned with respect to the disk axis 2 and by 120 ° about the disc axis 2 ver ⁇ is arranged.
• an Anformung 9 is provided, which protrude into recesses of the valve body 7. About these projections 9 and recesses an anti-rotation between the valve body 7 and the second variant of the disc insulator Ia is given.
• a conformation is by way of example in the Figure 3 9 quartz tube. However, it can also be provided that only a single Anformung 9 is provided.
• the webs 13a, 13b, 13c are aligned such that their main ⁇ axes act as a bisector to the sides of the clocking points formed by the contact points of the conductor pieces IIa, IIb, 11c formed equilateral triangle.
• FIG. 4 the arrangement known from FIG. 3 is shown in section along an axis BB. It can be seen that on both sides of the second variant of the disc insulator Ia similar sector-shaped sections 10a3, 10b3 angeord ⁇ net are aligned congruent to each other.

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• Insulating Bodies (AREA)
• Installation Of Bus-Bars (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=38606862

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• 2006
  • 2006-08-23 DE DE200610040038 patent/DE102006040038A1/de not_active Withdrawn
• 2007
  • 2007-08-02 EP EP07788169A patent/EP2054985A1/de not_active Withdrawn
  • 2007-08-02 CN CN2007800292258A patent/CN101501951B/zh not_active Expired - Fee Related
  • 2007-08-02 WO PCT/EP2007/058018 patent/WO2008022892A1/de active Application Filing

Non-Patent Citations (1)

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