EP3491654B1 - Dispositif de maintien d'un guide de câble - Google Patents

Dispositif de maintien d'un guide de câble Download PDF

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Publication number
EP3491654B1
EP3491654B1 EP17754340.2A EP17754340A EP3491654B1 EP 3491654 B1 EP3491654 B1 EP 3491654B1 EP 17754340 A EP17754340 A EP 17754340A EP 3491654 B1 EP3491654 B1 EP 3491654B1
Authority
EP
European Patent Office
Prior art keywords
clamping
line guide
supporting frame
wedge
receptacle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17754340.2A
Other languages
German (de)
English (en)
Other versions
EP3491654A1 (fr
Inventor
Johann Schlager
Jens Hoppe
Karsten LOPPACH
Thomas Wende
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3491654A1 publication Critical patent/EP3491654A1/fr
Application granted granted Critical
Publication of EP3491654B1 publication Critical patent/EP3491654B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse

Definitions

  • Such a device is from the EP 2 117 015 A1 already known.
  • a bushing is disclosed which is clamped to a cover of the transformer.
  • the clamping means have a wedge-shaped clamping part.
  • Power transformers for high-voltage direct current transmission generally have a line routing with which a winding connection line is located between a winding and the feed-through electrode of the transformer extends, is isolated from the housing to earth potential.
  • the winding connection line generally has several metallic rope-shaped conductors which are surrounded by a copper tube.
  • the copper tube has an outer paper insulation, with a plurality of outer barriers of an electrical non-conductor extending around the tube and forming a barrier system.
  • Such cable routing is used in particular in high-voltage direct current transformers, since the windings connected to the converter are exposed to both direct and alternating voltage stresses.
  • the cable routing In order to meet the ever increasing voltage requirements, the cable routing must be designed to be more and more spacious.
  • the screw connections which usually consist of pressboard, can only be loaded to a limited extent.
  • the object of the invention is therefore to provide a device of the type mentioned at the outset, which has a greater mechanical strength and is at the same time inexpensive.
  • the invention solves this problem in that the support structure has mutually opposite vertical supports, between which the line guide receptacle and the compensating element each extend in the horizontal direction.
  • the fastening unit has a clamping means.
  • the clamping means replaces the screw connections that have been customary up to now, which have reached their load capacity limit due to the material used.
  • the clamping means can be produced inexpensively within the scope of the invention and in a simple manner ensure a sufficiently strong hold of the line leadthrough on the device.
  • the line routing can be designed as desired within the scope of the invention.
  • the cable routing comprises one made of a metallic material Manufactured guide tube, for example made of copper, in which a winding connection line extends between the end of a winding of a transformer and its lead-through electrode.
  • the metallic tube of the line routing is covered on the outside with an insulation layer, for example a paper layer, the insulation layer being in an insulating fluid during operation and thus being wetted with the respectively selected insulating fluid.
  • the cable routing comprises one or more barrier systems, for example made of pressboard or another cellulose material or a different electrical insulating material, the barrier system delimiting gaps or channels which are filled with insulating fluid during operation of the transformer.
  • a clamping device is also provided within the scope of the invention, which fixes the clamping means in its clamping position.
  • the clamping means comprises a wedge-shaped clamping wedge.
  • the clamping wedge can advantageously be displaced perpendicular to the clamping direction.
  • the clamping wedge is connected either directly or via intermediate components to the cable routing receptacle, which is guided in the supporting frame in a longitudinally movable manner.
  • the cable routing receptacle is moved in the clamping direction until it comes into contact with the outer contour of the cable routing of the transformer.
  • a further displacement of the clamping means increases the clamping force and thus the holding force of the cable routing on the supporting frame of the device according to the invention.
  • the clamping means of the fastening unit are moved with the aid of the clamping device. Deviating from this, however, it is also possible to move the clamping means or the clamping wedge independently of the clamping device and thus to increase the clamping force.
  • the line guide receptacle is movably guided in a clamping direction in the support frame, the clamping wedge being arranged between the support frame and the line guide receptacle and supported on the latter.
  • the clamping wedge can either rest directly on the supporting frame or the cable routing receptacle or indirectly via interposed dimensionally stable components.
  • the supporting structure has stationary compensation elements on which the clamping wedge is supported.
  • the support frame has mutually opposite vertical support stands, between which the cable routing receptacle and optionally the compensating element each extend in the horizontal direction.
  • the line guide receptacle extends in the transverse direction to the respective support stand, the line guide receptacle either extending above and / or below the line routing.
  • the cable routing is therefore either on the cable routing receptacle or is pressed by an upper cable routing receptacle onto a lower cable routing receptacle, so that a sufficiently good hold is provided between the supporting structure and the line routing receptacle.
  • the respective cable routing receptacle is at least partially complementary to the outer contour of the cable routing.
  • the line routing receptacle is made concave in sections, the concave section describing a segment of a circle whose diameter roughly corresponds to the diameter of the outer contour of the line routing.
  • Each support stand advantageously has two mutually facing vertical mounting strips which are spaced apart from one another by spacer elements and at the same time are fixed to one another are connected.
  • Each cable routing receptacle extends between the vertical mounting strips and is guided by them in the vertical direction. In this case, moving the clamping wedge in the horizontal direction can generate a clamping force in the vertical direction.
  • the clamping fuse has a securing plate which can be fastened to the supporting frame.
  • the securing plate is, for example, screwed to the supporting frame by means of clamping screws, wherein tightening the screws moves the securing plate in a direction which generates an additional clamping force via the wedge.
  • the securing plate extends in the clamped position in the vertical direction.
  • the clamping fuse has a securing plate which extends in the horizontal direction and is fixed to the supporting frame.
  • the horizontal locking plate is only set up for clamping the respective clamping means in its clamping position.
  • no additional clamping force is generated by locking or, for example, further tightening the screws of the clamping device. The clamping force and the forces introduced via the clamping device and via the clamping means are thus decoupled from one another.
  • the securing plate has an elongated hole, with clamping bolts being provided which, in the clamping position, extend through the elongated hole and the clamping means, so that the clamping bolts clamp the clamping means onto the supporting structure.
  • the clamping bolts have, for example, a thread, wherein clamping nuts are provided for clamping the threaded bolts on the supporting frame.
  • the supporting structure is advantageously fastened to a base plate of the active part of the transformer.
  • An active part of the transformer is at a high voltage potential during operation of the transformer.
  • such an active part has an undervoltage and an overvoltage winding, which are inductively coupled to one another via a core.
  • the active part comprises connection lines between the winding ends and connections of the transformer.
  • Such an active part generally has a lower thickness made of wood (pressboard or synthetic resin pressed wood), which is excellently suitable for receiving the device according to the invention.
  • the device according to the invention is also firmly connected to an upper holding plate, as a result of which the mechanical strength is increased.
  • the device according to the invention advantageously consists of an electrically non-conductive material, that is to say an insulating material such as a cellulose material such as paper, pressboard or cardboard.
  • an electrically non-conductive material that is to say an insulating material such as a cellulose material such as paper, pressboard or cardboard.
  • insulating material such as a cellulose material such as paper, pressboard or cardboard.
  • other non-conductors made of a polymer or the like are of course also possible within the scope of the invention.
  • FIG. 1 shows a perspective view of an embodiment of the device 1 according to the invention from above.
  • the device 1 has a support frame 2 which comprises two support stands 3 and 4 which are opposite one another.
  • Each support stand 3 consists of two spaced-apart vertical mounting strips 5, which are firmly connected to one another via spacer blocks 6 as spacer elements.
  • Each support stand 3, 4 is fixedly connected to an upper holding plate 8 of a high-voltage transformer via a fastening screw 7.
  • a horizontal cable routing receptacle 9 extends between the vertical mounting strips 5 of each support stand 3, 4 and is thus movably guided in the vertical and horizontal directions by the vertical mounting strips 5.
  • a compensating element 10 can be seen above the line guide receptacle 9, which is firmly connected to the support stands 3, 4.
  • the cable routing receptacle 9 has a receptacle section 11 which is complementary to the outer contour of a cable routing 12 of the transformer. In other words, the cable routing receptacle 9 bears in a form-fitting manner on the outer wall of the cable routing 12.
  • the cable guide 12 comprises a barrier system and an inner metallic tube made of copper, which is provided with paper insulation on the outside.
  • a rope-shaped winding connection conductor for electrically connecting a winding of the transformer (not shown in the figure) with its connection electrode for connecting a high-voltage bushing extends within the copper tube.
  • the transformer is not yet filled with an insulating liquid.
  • a clamping wedge 13 is provided as clamping means for clamping or pressing the line guide receptacle 9 on the line guide 12, which is arranged between the compensating element 10 and the line guide receptacle 9.
  • the clamping wedge 13 is wedge-shaped, the wedge tip facing the support stand 4. Moving the clamping wedge 13 in the direction of the support stand 4 thus generates an increasing contact pressure of the line guide receptacle 9 on the line guide 12.
  • a securing plate 14 can also be seen as a clamp securing device, which, like the mounting strips 5, extends in the vertical direction.
  • the securing plate 14 is aligned at right angles to the vertical mounting strips 5, clamping screws 15 being provided which extend between brackets 16 which are fixedly connected to the support stands 3, 4 and the securing plate 14.
  • the clamping screws 15 are provided with an external thread, so that the securing plate 14 can be moved towards or removed from the support stand 3 by screwing a tension nut 17. In this way, the clamping wedge 13 can be pushed further to the rear support stand 4 and thus the clamping force can be increased.
  • the locking plate 14 ensures that the wedge in the Figure 1 shown clamping position is fixed.
  • FIG Figure 2 shows one of the Figure 1 Different configuration of the device 1 according to the invention.
  • the configuration of the supporting structure 2 of the device 1 according to the invention largely corresponds to that in FIG Figure 1 shown embodiment.
  • a line guide receptacle 9 can be seen, which has a receiving section 11 which is complementary in shape to the outer contour of the line guide 12.
  • the clamping wedge 13 extends again, the one in the horizontal direction Direction is held in the support stands 3 and 4.
  • the clamping fuse comprises a horizontal securing plate 18 which extends in the horizontal direction.
  • the horizontal securing plate 18 is held fixed to the supporting frame 2 in the horizontal direction. In other words, the horizontal locking plate 18 cannot be moved in the horizontal direction.
  • An elongated hole 19 is formed in the horizontal securing plate 18. Through the elongated hole 19 and the clamping wedge 13 arranged directly behind it, clamping bolts 20 extend which cooperate with clamping nuts 21, so that clamping of the clamping wedge 13 on the horizontal securing plate 18 is made possible.
  • the clamping nuts 21 are in the Figure 2 shown embodiment executed as square nuts.
  • the horizontal locking plate 18 thus allows the clamping wedge 13 to be clamped in its clamping position.
  • the support frame 2 is mounted on its base plate 22 of the active part of the transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Housings And Mounting Of Transformers (AREA)

Claims (10)

  1. Dispositif (1) de maintien d'un guide (12) de câble d'un transformateur de haute tension, comprenant
    - une ossature (2) de support pouvant être fixée au transformateur de haute tension,
    - un logement (9) de guidage de câble, qui est disposé sur l'ossature (2) de support et qui est conçu pour maintenir le guidage (12) de câble, et
    - une unité de fixation pour l'immobilisation du guidage de câble sur le logement de guidage de câble, dans lequel
    - l'unité de fixation a au moins un moyen (13) de serrage, qui, dans une position de serrage, sert le guidage (12) de câble sur le logement (9) de guidage de câble et une sécurité (14, 18) de serrage est prévue pour immobiliser le moyen (13) de serrage dans sa position de serrage, le moyen de serrage comprenant un coin (13) de serrage, conformé de manière cunéiforme,
    - le logement (9) de guidage de câble est guidé de manière mobile dans une direction de serrage dans l'ossature (2) de support et le coin (13) de serrage est disposé entre l'ossature (2) de support et le logement (9) de guidage de câble et est appuyé sur celui-ci, et dans lequel
    - l'ossature de support a des éléments de compensation à poste fixe, sur lesquels s'appuie le coin de serrage,
    dans lequel
    l'ossature (2) de support a des supports (3, 4) verticaux opposés l'un à l'autre, entre lesquels s'étendent, chacun dans la direction horizontale, le logement (9) de guidage de câble et l'élément (10) de compensation.
  2. Dispositif (1) suivant la revendication 1,
    dans lequel
    chaque support (3, 4) a deux réglettes (5) verticales de maintien tournées l'une vers l'autre, qui sont maintenues à distance l'une de l'autre par des éléments (6) d'entretoisement et qui sont reliées fixement l'une à l'autre, chaque logement (9) de guidage de câble s'étendant entre les réglettes (5) verticales de maintien et étant guidé par celles-ci.
  3. Dispositif (1) suivant la revendication 2,
    caractérisé en ce que
    la sécurité (14, 18) de serrage a une plaque (14, 18) de sécurité pouvant être fixée à l'ossature (2) de support.
  4. Dispositif (1) suivant la revendication 3,
    dans lequel
    la plaque (14) de sécurité s'étend dans la direction verticale dans la position de serrage et est fixée aux réglettes (5) verticales de maintien par un vissage (15).
  5. Dispositif (1) suivant l'une des revendications précédentes,
    caractérisé en ce que
    la sécurité de serrage a une plaque (18) de sécurité s'étendant dans la direction horizontale et immobilisée sur l'ossature de support.
  6. Dispositif (1) suivant la revendication 5,
    caractérisé en ce que
    la plaque (18) de sécurité constitue une boutonnière (19) et il est prévu des boulons (20) de serrage, qui, dans la position de serrage, passent dans la boutonnière (19) et dans le moyen (13) de serrage et serre à bloc le moyen (13) de serrage sur l'ossature (2) de support.
  7. Dispositif (1) suivant la revendication 6,
    dans lequel
    les boulons (20) de serrage sont pourvus d'un filetage, des écrous (21) de serrage étant prévus pour serrer à bloc le moyen (13) de serrage.
  8. Dispositif (1) suivant l'une des revendications précédentes,
    dans lequel
    l'ossature (2) de support peut être fixée à une plaque (22) de base d'une partie active du transformateur de haute tension.
  9. Dispositif (1) suivant l'une des revendications précédentes,
    dans lequel
    l'ossature (2) de support peut être fixée à une plaque (8) supérieure de maintien.
  10. Dispositif (1) suivant l'une des revendications précédentes,
    dans lequel
    le dispositif (1) est constitué entièrement en un matériau non conducteur de l'électricité.
EP17754340.2A 2016-09-14 2017-08-16 Dispositif de maintien d'un guide de câble Active EP3491654B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016217485.1A DE102016217485A1 (de) 2016-09-14 2016-09-14 Vorrichtung zum Halten einer Leitungsführung
PCT/EP2017/070754 WO2018050386A1 (fr) 2016-09-14 2017-08-16 Dispositif de maintien d'un guide de câble

Publications (2)

Publication Number Publication Date
EP3491654A1 EP3491654A1 (fr) 2019-06-05
EP3491654B1 true EP3491654B1 (fr) 2020-06-17

Family

ID=59656063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17754340.2A Active EP3491654B1 (fr) 2016-09-14 2017-08-16 Dispositif de maintien d'un guide de câble

Country Status (3)

Country Link
EP (1) EP3491654B1 (fr)
DE (1) DE102016217485A1 (fr)
WO (1) WO2018050386A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698479B (zh) * 2019-02-22 2024-03-08 浙江亘古电缆股份有限公司 一种高压电缆固定装置
CN117080983B (zh) * 2023-08-26 2024-04-02 金开新能科技有限公司 电缆上杆保护管的安装装置及施工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143923B (de) * 1961-09-26 1963-02-21 Licentia Gmbh Flachkeil aus elastischem Isolierstoff zur Befestigung von Leitungen von Hochspannungstransformatoren mit Hilfe von metallfreien Klemmanordnungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB450800A (en) * 1934-11-01 1936-07-24 British Thomson Houston Co Ltd Improvements in and relating to electric transformers
GB659222A (en) * 1949-05-17 1951-10-17 British Thomson Houston Co Ltd Improvements in high voltage electrical insulating bushings
DE1128028B (de) 1961-02-06 1962-04-19 Licentia Gmbh Flachkeil aus elastischem Isolierstoff zur Befestigung von Leitungen mit Hilfe von metallfreien Klemmanordnungen
EP2117015A1 (fr) * 2008-05-06 2009-11-11 ABB Technology AG Traversée haute tension et dispositif haute tension comprenant ladite traversée

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143923B (de) * 1961-09-26 1963-02-21 Licentia Gmbh Flachkeil aus elastischem Isolierstoff zur Befestigung von Leitungen von Hochspannungstransformatoren mit Hilfe von metallfreien Klemmanordnungen

Also Published As

Publication number Publication date
DE102016217485A1 (de) 2018-03-15
WO2018050386A1 (fr) 2018-03-22
EP3491654A1 (fr) 2019-06-05

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