EP0524472B1 - Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch - Google Patents

Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch Download PDF

Info

Publication number
EP0524472B1
EP0524472B1 EP92111394A EP92111394A EP0524472B1 EP 0524472 B1 EP0524472 B1 EP 0524472B1 EP 92111394 A EP92111394 A EP 92111394A EP 92111394 A EP92111394 A EP 92111394A EP 0524472 B1 EP0524472 B1 EP 0524472B1
Authority
EP
European Patent Office
Prior art keywords
switch pole
insulator
housing
intermediate part
switch
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.)
Expired - Lifetime
Application number
EP92111394A
Other languages
German (de)
French (fr)
Other versions
EP0524472A1 (en
Inventor
Erich Kessi
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.)
General Electric Switzerland GmbH
Original Assignee
GEC Alsthom T&D 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 GEC Alsthom T&D AG filed Critical GEC Alsthom T&D AG
Publication of EP0524472A1 publication Critical patent/EP0524472A1/en
Application granted granted Critical
Publication of EP0524472B1 publication Critical patent/EP0524472B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Definitions

  • the present invention relates to a method for producing a switch pole for a medium or high voltage switch according to the preamble of claim 1, a device (claim 9) for carrying out the method and a switch pole (claim 11) for a medium or high voltage switch.
  • a pressurized gas-insulated switch pole of a high-voltage switch manufactured by this known method is described in the SPRECHER ENERGIE catalog 42B4 "SF6-circuit breaker".
  • the tubular support and switching chamber insulators Prior to the pole assembly, the tubular support and switching chamber insulators, which are open in the axial direction, are provided with the corresponding metal fittings. These encompass the axial end regions of the insulators at a distance, and the space between the metal fittings and the insulators is filled with a casting compound for fastening to one another.
  • the post insulator is placed on the mechanism housing, an annular seal being placed beforehand on a sealing surface of the mechanism housing, on which the lower end face of the post insulator comes to rest.
  • the post insulator is fastened to the latter by means of a set of screw connections, which are supported on the lower metal fitting and on the mechanism housing.
  • An insulating drive rod extends through the support insulator in the axial direction and its lower end is via a lever-link mechanism with a seal that is inserted tightly into the mechanism housing and rotatably mounted on it Drive shaft connected.
  • An intermediate part is placed on the support insulator with the interposition of a likewise ring-shaped seal, on which the lower connection of the switch pole is provided and on which the movable contact piece to be connected to the drive rod was previously mounted together with a compression system for generating the extinguishing gas flow.
  • the switching chamber insulator is then placed over this and fastened to the supporting insulator by means of a second set of screw connections which pass through the intermediate part and are supported on the fittings of the supporting and switching chamber insulators.
  • a head housing which carries a fixed contact piece which interacts with the movable contact piece, is placed on the switching chamber insulator with the interposition of an annular seal and is fastened to the upper metal fitting of the switching chamber insulator by means of a third set of screw connections.
  • the upper connection of the switch pole is provided on the head housing. Now that the switch pole has been assembled, a leak test can be carried out.
  • the switching chamber insulator with the attached metal fittings is precisely measured in a jig beforehand, and fitting holes are drilled into the metal fittings, through which fitting pins are inserted during assembly. which are inserted through analog fitting holes in the head housing and in the intermediate part.
  • parts of the switch which have to be aligned with one another after the switch pole has been installed no longer need to be measured beforehand. Alignment can take place during assembly because the corresponding parts can be moved relative to one another due to the mobility of the fitting in question relative to the insulator.
  • the storage is simplified and thus more cost-effective, since it is no longer necessary to store insulators with cast fittings, but these parts can be stored individually and combined in particular if desired.
  • the mutual alignment of the interacting contact pieces can be carried out in a simple manner in that the movable contact piece is brought into the switch-on position. Since the switch parts are only loosely placed on top of one another, they can now be easily moved relative to one another, which automatically results in precisely aligned contact pieces leads. Since the fittings are only potted with the support and switching chamber insulators after the switch pole has been installed, it is possible to dispense with screw connections and to directly form the fitting parts on the mechanism housing, intermediate part and head housing, which results in fewer switch parts and, in particular, also in less-to-be-sealed connection points leads.
  • the entire pole can be checked for leaks before the post insulator is attached to the mechanism housing, the interrupter insulator to the post insulator and the head housing to the interrupter insulator. This also allows easy, quick disassembly if the leak test should show a negative result.
  • a device for carrying out the method according to the invention is specified in claim 9.
  • a switch pole for a medium or high voltage switch is defined in claim 11.
  • the switch pole 10 of a high-voltage circuit breaker shown in the figures has a mechanism housing 12, for example made of cast aluminum, which forms the base of the switch pole 10.
  • a mechanism housing 12 On the mechanism housing 12 is a ceramic, tubular support insulator 14, between the end of the mechanism housing 12 facing end and a corresponding sealing surface 12 'on the mechanism housing 12, an annular seal 16 is provided.
  • an annular fitting 18 is formed, which protrudes with respect to the sealing surface 12 'in the direction against the support insulator 14 and which engages around the lower edge region 14' at a distance.
  • an intermediate part 20 is arranged, on which on the lower, the support insulator 14 facing side also a sealing surface 20 'is formed. Between the intermediate part 20 and the support insulator 14, a further annular seal 16 'is provided, which bears against the sealing surface 20' and at the upper end of the support insulator 14. On the intermediate part 20, an annular fitting 22 is formed, which engages around the upper end region 14 ⁇ of the support insulator 14 at a distance.
  • a likewise ceramic, tubular interrupter isolator 24 is placed on the intermediate part 20, the lower end face of which rests on an annular seal 26 which in turn rests on a further sealing surface 20 ⁇ formed on the intermediate part 20.
  • the lower end region 24 'of the interrupter insulator 24 is surrounded by a fitting 28 which is also formed on the intermediate part 20 at a distance.
  • a further ring seal 26 'a head housing 30 which on its lower side facing the switching chamber insulator 24 also has a sealing surface 30' cooperating with the ring seal 26 'and on which a fitting 32 is also formed is, which protrudes relative to the sealing surface 30 'in the direction against the switching chamber insulator 24 and engages around its upper edge region 24 ⁇ at a distance.
  • the ring seal 26 'lies on the upper end face of the interrupter isolator 24.
  • the head housing 30 On its upper side, the head housing 30 has an opening 31 which is approximately circular in cross section and which is closed in a gastight manner by a removable cover 34.
  • the cover 34 is fastened to the head housing 30 by means of screws, not shown.
  • the parts forming the housing 36 of the switch pole 10, namely the mechanism housing 12, the support insulator 14, the intermediate part 20, the switching chamber insulator 24 and the head housing 30 with the cover 34 are fastened to one another in that the spaces between the fittings 18, 22 and the Post insulator 14 and the spaces between the fittings 28, 32 and the switching chamber insulator 24 are poured out with a casting compound 38.
  • the casting compound 38 does not perform a sealing function, but only provides the mechanically firm connection between the corresponding parts safely.
  • the sealing function is performed by the seals 16, 16 'and ring seals 26, 26'.
  • a drive shaft 40 is tightly inserted into the interior of the mechanism housing 12 and is rotatably mounted on the mechanism housing 12 in a known manner.
  • a drive lever 42 is wedged onto the drive shaft 40, at the free end of which an insulating drive rod 44, which passes through the support insulator 14 in the axial direction, is articulated.
  • the upper end of the drive rod 44 is connected to a blow-out tube 46, at the upper end of which a tulip-shaped, movable contact piece 48 is fastened.
  • a base 50 of a compression cylinder 52 protrudes therefrom, the jacket 52 'of which coaxially surrounds the blow-out tube 46 at a distance.
  • the base 50 has passages 54 running in the axial direction, which flow-wise connect the space delimited by the tulip-shaped contact piece 48 and an insulating material nozzle 56 surrounding it to a compression space delimited by the blow-out pipe 46 and compression cylinder 52 and an annular piston 58.
  • the piston 58 is supported on supports 60 on the intermediate part 20 and is integrally formed thereon. Furthermore, the blow-out pipe 46 penetrates the intermediate part 20 and is slidably mounted thereon.
  • sliding contact pieces 62 are arranged, which rest on the outside of the compression cylinder made of electrically conductive material 52 on the jacket 52 'to electrically connect this to the intermediate part 20.
  • a lower connection 64 of the switch pole 10 is also formed on the intermediate part 20, as can be seen particularly well from FIG. 3.
  • a contact carrier 66 is fastened to the substantially annular head housing 30, for example by means of screws, to which a fixed contact piece 68, which is coaxial to the longitudinal axis of the switch pole 10, is fixed.
  • This fixed contact piece 68 interacts with the tulip-shaped, movable contact piece 48 and is encompassed in an electrically conductive manner by the latter in the switched-on position, which is indicated by dashed lines in FIG. 1. It closes the neck of the insulating material nozzle 56, which is released again when it is switched off.
  • the upper connection 70 of the switch pole 10 is also formed on the head housing 30, as shown in FIG. 3. Next are in the interior of the housing 36 from the head housing 30 to the fixed contact piece 68 from about coaxial sliding contact fingers 72, which rest in the switched-on position on the jacket 52 'of the compression cylinder 52 and a low-resistance electrical connection between the upper connection 70 and the lower connection 64 via the compression cylinder 52 and ensure the sliding contact pieces 62.
  • the switch pole 10 is shown clamped in a holder 76 rotatable about the horizontal axis 74.
  • This has a plate-like support member 78 for the mechanism housing 12 and a ring-like Holding member 80, which is supported on a shoulder 82 of the head housing 30 outside the region of the cover 34.
  • the support member 78 and the holding member 80 are tensioned against each other by means of these tie rods 84.
  • the tie rods 84 have threads in their end regions, on which nuts 86 are seated.
  • pivot pins 88 are fastened approximately centrally, which run coaxially with the horizontal axis 74 and which are mounted on the side legs of a U-shaped support bracket 90.
  • a hole 92 ' is made in order to be able to hang the holder 76 for the storage or assembly of the switch pole 10 at the desired location.
  • the mechanism housing 12 has a connecting piece 94 in order to enable the connection to a vacuum pump, a pressure source or a compressed gas filling device, for example for filling SF6.
  • a connecting piece 94 is indicated in FIG. 1 by line 96.
  • the jug-shaped casting ladle 98 shown in FIGS. 1 and 2 symbolically shows the pouring of the relevant spaces between the fittings 28 and 32 and the switching chamber insulator 24 with casting compound 38.
  • the switch pole 10 described above and shown in the figures is assembled as follows: The mechanism housing 12 with the drive shaft 40 preassembled thereon, the drive lever 42 and the drive rod 44 is placed on the support member 78. The annular seal 16 is placed on the sealing surface 12 'and the support insulator 14th placed on the seal 16.
  • the switching chamber insulator 24 is placed on this ring seal 26 and then the head housing 30 with the preassembled contact carrier 66 and contact piece 68 is placed on the end face of the switching chamber insulator 24 ' discontinued. Since the movable contact piece 48 is in the switch-on position, the fixed contact piece 68 comes into engagement with the contact piece 48, so that the two contact pieces 48, 68 are necessarily aligned with one another. It should be noted that all parts of the housing 36 are loosely stacked on top of one another, so that alignment of the individual parts is still possible without any problems.
  • the line 96 is now connected to a vacuum source, not shown, in order to evacuate the switch pole 10.
  • the loosely stacked parts are fixed against one another, and at the same time the tightness of the housing 36 can be checked. If the leak test should show defects, a quick and easy removal of the switch pole 10 is still possible.
  • the switch pole 10 is fixed in the holder 76, and at the same time the seals 16, 16 ', 26, 26' are further biased. If necessary, a further leak test can now be carried out by connecting the line 96 to a pressure source in order to generate excess pressure in the interior of the housing 36.
  • the switch pole 10 can be turned back into its correct position.
  • the tie rods 84 and the holding member are released 80 removed from the head housing 30.
  • the finished switch pole 10, as shown in FIG. 3, is now available for further quality assurance tests, such as pressure and / or break testing, and if necessary for filling up with compressed gas and for delivery.
  • the compressed gas is to be removed from the switch pole 10, and after the cover 34 has been removed from the head housing 30, the active switch parts are accessible.
  • the fixed contact piece 68 can be removed from the switch pole 10 by loosening the contact carrier 66.
  • the drive lever 42 is released by pulling out the drive shaft 40, after which the movable contact piece 48 with the insulating material nozzle 56, the compression cylinder 52 and the blow-out pipe 46 can be pulled upwards from the intermediate part 20, as shown in FIG. 4.
  • the insulating drive rod 44 and the drive lever 42 are also carried along.
  • the process of reassembling the parts removed from the housing 36 is carried out in the reverse order, the pushing of the drive lever 42 onto the drive shaft 40 being made possible, for example, by providing two openings in the axial direction of the drive shaft 40 for reaching into the mechanism housing 12 are, that opening can be closed with a cover through which the drive shaft 40 does not penetrate to the outside.
  • switch poles in which the fittings surrounding the post insulator and switching chamber insulator are not attached to the mechanism housing, intermediate part and Head housing are molded.
  • the fittings in question are attached to the mechanism housing, intermediate part and head housing, for example by means of screw connections, and the parts of the switch pole 10 are loosely stacked and aligned before the spaces between the fittings and the insulators are then poured out.
  • the proposed method is suitable for producing switch poles both for high-voltage and for medium-voltage switches and for switches with ceramic insulators and those with plastic insulators.
  • a head housing without a removable cover can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Manufacture Of Switches (AREA)
  • Breakers (AREA)
  • Circuit Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

During the assembly of the switch pole (10), the individual parts (12, 14, 20, 24, 30) of the housing (36) are loosely stacked one on top of the other and fixed. This can be done by application of a partial vacuum in the interior of the housing (36) and/or by means of the holder (76). The spaces, which are open towards the top, between the fitting (18) and the supporting insulator (14), as well as between the fitting (28) and the switching chamber insulator (24) are filled with potting compound (38). Once this potting compound (38) has at least partially cured, the switch pole (10) is placed on the head by rotating the holder (76) about the horizontal axis (74), after which the spaces, which are now open towards the top, between the fitting (32) and the switching chamber insulator (24) as well as between the fitting (22) and the supporting insulator (14) are filled with potting compound (38). The enables simple assembly, automatic alignment of the contact pieces (48, 68) on top of one another and a sealing test, before the switch pole (10) is completely assembled. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Schalterpols für einen Mittel- oder Hochspannungsschalter gemäss dem Oberbegriff des Anspruchs 1, eine Vorrichtung (Anspruch 9) zur Ausführung des Verfahrens sowie einen Schalterpol (Anspruch 11) für einen Mittel- oder Hochspannungsschalter.The present invention relates to a method for producing a switch pole for a medium or high voltage switch according to the preamble of claim 1, a device (claim 9) for carrying out the method and a switch pole (claim 11) for a medium or high voltage switch.

Ein nach diesem bekannten Verfahren hergestellter, druckgasisolierter Schalterpol eines Hochspannungsschalters ist im SPRECHER ENERGIE-Katalog 42B4 "SF₆-Leistungsschalter" beschrieben. Vorgängig der Polmontage werden die rohrförmigen, in axialer Richtung offenen Stütz- und Schaltkammerisolatoren mit den entsprechenden Metallarmaturen versehen. Diese umgreifen die axialen Endbereiche der Isolatoren mit Abstand, und zum aneinander Befestigen wird der Raum zwischen den Metallarmaturen und den Isolatoren mit einer Giessmasse gefüllt. Bei der Montage wird der Stützisolator auf das Mechanismusgehäuse gestellt, wobei vorgängig auf eine Dichtfläche des Mechanismusgehäuses eine ringförmige Dichtung gelegt wird, auf die die untere Stirnfläche des Stützisolators zur Anlage kommt. Dann wird der Stützisolator mittels eines Satzes Schraubverbindungen, die sich an der unteren Metallarmatur und am Mechanismusgehäuse abstützen, an letzterem befestigt. Eine isolierende Antriebsstange durchgreift den Stützisolator in axialer Richtung und ihr unteres Ende ist über ein Hebel- Laschengetriebe mit einer dicht in das Mechanismusgehäuse eingeführten und an diesem drehbar gelagerten Antriebswelle verbunden. Auf den Stützisolator wird unter Dazwischenlegen einer ebenfalls ringförmigen Dichtung ein Zwischenteil gestellt, an dem der untere Anschluss des Schalterpols vorgesehen ist und an das vorgängig das bewegliche, mit der Antriebsstange zu verbindende Kontaktstück zusammen mit einem Kompressionssystem zum Erzeugen der Löschgasströmung montiert wurde. Darüber wird dann der Schaltkammerisolator gestülpt und mittels eines zweiten Satzes Schraubverbindungen, die das Zwischenteil durchgreifen und sich an den Armaturen des Stütz- und des Schaltkammerisolators abstützen, am Stützisolator befestigt. Ein Kopfgehäuse, das ein mit dem bewegbaren Kontaktstück zusammenwirkendes festes Kontaktstück trägt, wird unter Dazwischenlegen einer Ringdichtung auf den Schaltkammerisolator abgelegt und mittels eines dritten Satzes Schraubverbindungen an der oberen Metallarmatur des Schaltkammerisolators befestigt. Am Kopfgehäuse ist der obere Anschluss des Schalterpols vorgesehen. Nachdem nun der Schalterpol fertig montiert ist, kann eine Dichtigkeitsprüfung durchgeführt werden.A pressurized gas-insulated switch pole of a high-voltage switch manufactured by this known method is described in the SPRECHER ENERGIE catalog 42B4 "SF₆-circuit breaker". Prior to the pole assembly, the tubular support and switching chamber insulators, which are open in the axial direction, are provided with the corresponding metal fittings. These encompass the axial end regions of the insulators at a distance, and the space between the metal fittings and the insulators is filled with a casting compound for fastening to one another. During assembly, the post insulator is placed on the mechanism housing, an annular seal being placed beforehand on a sealing surface of the mechanism housing, on which the lower end face of the post insulator comes to rest. Then the post insulator is fastened to the latter by means of a set of screw connections, which are supported on the lower metal fitting and on the mechanism housing. An insulating drive rod extends through the support insulator in the axial direction and its lower end is via a lever-link mechanism with a seal that is inserted tightly into the mechanism housing and rotatably mounted on it Drive shaft connected. An intermediate part is placed on the support insulator with the interposition of a likewise ring-shaped seal, on which the lower connection of the switch pole is provided and on which the movable contact piece to be connected to the drive rod was previously mounted together with a compression system for generating the extinguishing gas flow. The switching chamber insulator is then placed over this and fastened to the supporting insulator by means of a second set of screw connections which pass through the intermediate part and are supported on the fittings of the supporting and switching chamber insulators. A head housing, which carries a fixed contact piece which interacts with the movable contact piece, is placed on the switching chamber insulator with the interposition of an annular seal and is fastened to the upper metal fitting of the switching chamber insulator by means of a third set of screw connections. The upper connection of the switch pole is provided on the head housing. Now that the switch pole has been assembled, a leak test can be carried out.

Um zu gewährleisten, dass das bewegliche Kontaktstück mit dem festen Kontaktstück genau ausgerichtet ist, wird vorgängig der Montage der Schaltkammerisolator mit den daran befestigten Metallarmaturen in einer Lehre genau ausgemessen, und in die Metallarmaturen werden Passlöcher gebohrt, durch die bei der Montage Passstifte gesteckt werden, die durch analoge, im Kopfgehäuse und im Zwischenteil angebrachte Passlöcher gesteckt werden.In order to ensure that the movable contact piece is precisely aligned with the fixed contact piece, the switching chamber insulator with the attached metal fittings is precisely measured in a jig beforehand, and fitting holes are drilled into the metal fittings, through which fitting pins are inserted during assembly. which are inserted through analog fitting holes in the head housing and in the intermediate part.

Es ist einzusehen, dass diese Art der Montage zeit- und insbesondere auch hilfsmittelaufwendig ist und bei negativem Resultat der Gasdichtigkeitsprüfung der ganze fertig montierte Pol wieder demontiert werden muss.It can be seen that this type of assembly is time-consuming and in particular also resource-intensive and with negative results As a result of the gas tightness test, the entire assembled pole must be dismantled again.

Es ist deshalb eine Aufgabe der vorliegenden Erfindung, ein Verfahren zur Herstellung eines Schalterpols für einen Mittel- oder Hochspannungsschalter vorzuschlagen, das eine einfache und vor allem weniger teure Hilfsmittel benötigende Montage erlaubt.It is therefore an object of the present invention to propose a method for producing a switch pole for a medium-voltage or high-voltage switch which allows simple and, above all, less expensive aids to be installed.

Diese Aufgabe wird durch ein Verfahren gemäss dem Anspruch 1 gelöst.This object is achieved by a method according to claim 1.

Entsprechend dem erfindungsgemässen Verfahren müssen Teile des Schalters, die nach der Montage des Schalterpols aufeinander ausgerichtet sein müssen, nicht mehr vorgängig ausgemessen werden. Das aufeinander Ausrichten kann während der Montage erfolgen, weil die entsprechenden Teile infolge der Beweglichkeit der betreffenden Armatur zum Isolator relativ zueinander verschiebbar sind. Im weiteren wird die Lagerhaltung vereinfacht und somit kostengünstiger, da nicht mehr Isolatoren mit ausgegossenen Armaturen eingelagert werden müssen, sondern diese Teile einzeln gelagert und insbesondere auf Wunsch kombiniert werden können.According to the method according to the invention, parts of the switch which have to be aligned with one another after the switch pole has been installed no longer need to be measured beforehand. Alignment can take place during assembly because the corresponding parts can be moved relative to one another due to the mobility of the fitting in question relative to the insulator. In addition, the storage is simplified and thus more cost-effective, since it is no longer necessary to store insulators with cast fittings, but these parts can be stored individually and combined in particular if desired.

Das gegenseitige Ausrichten der miteinander zusammenwirkenden Kontaktstücke kann auf einfache Art und Weise dadurch durchgeführt werden, dass das bewegliche Schaltstück in die Einschaltstellung verbracht wird. Da die Schalterteile nur lose aufeinander gestellt sind, können diese nun problemlos relativ zueinander verschoben werden, was automatisch zu genau aufeinander ausgerichteten Kontaktstücken führt. Da das Vergiessen der Armaturen mit den Stütz- und Schaltkammerisolatoren erst nach der Montage des Schalterpols erfolgt, ist es möglich, auf Schraubverbindungen zu verzichten und die Armaturteile am Mechanismusgehäuse, Zwischenteil und Kopfgehäuse direkt anzuformen, was zu weniger Schalterteilen und insbesondere auch zu weniger abzudichtenden Verbindungsstellen führt. Die Dichtigkeitsprüfung des gesamten Pols kann durchgeführt werden, bevor der Stützisolator am Mechanismusgehäuse, der Schaltkammerisolator am Stützisolator und das Kopfgehäuse am Schaltkammerisolator befestigt ist. Dies erlaubt auch eine problemlose, schnelle Demontage, falls die Dichtigkeitsprüfung ein negatives Resultat zeigen sollte.The mutual alignment of the interacting contact pieces can be carried out in a simple manner in that the movable contact piece is brought into the switch-on position. Since the switch parts are only loosely placed on top of one another, they can now be easily moved relative to one another, which automatically results in precisely aligned contact pieces leads. Since the fittings are only potted with the support and switching chamber insulators after the switch pole has been installed, it is possible to dispense with screw connections and to directly form the fitting parts on the mechanism housing, intermediate part and head housing, which results in fewer switch parts and, in particular, also in less-to-be-sealed connection points leads. The entire pole can be checked for leaks before the post insulator is attached to the mechanism housing, the interrupter insulator to the post insulator and the head housing to the interrupter insulator. This also allows easy, quick disassembly if the leak test should show a negative result.

Eine Vorrichtung zur Ausführung des erfindungsgemässen Verfahrens ist im Anspruch 9 angegeben.A device for carrying out the method according to the invention is specified in claim 9.

Ein Schalterpol für einen Mittel- oder Hochspannungsschalter ist im Anspruch 11 definiert.A switch pole for a medium or high voltage switch is defined in claim 11.

Bevorzugte Ausführungsformen des Verfahrens und bevorzugte Ausbildungsformen der Vorrichtung und des Schalterpols sind in den abhängigen Ansprüchen angegeben.Preferred embodiments of the method and preferred embodiments of the device and the switch pole are specified in the dependent claims.

Die vorliegende Erfindung wird nun anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben. Es zeigen rein schematisch:

Fig. 1 und 2
im Vertikalschnitt, einen Schalterpol zu zwei verschiedenen Zeitpunkten seiner Herstellung;
Fig. 3
in Ansicht, den fertiggestellten Schalterpol;
Fig. 4
im Vertikalschnitt, den beim Kopfgehäuse geöffneten Schalterpol mit herausmontierten Teilen für Revisionsarbeiten.
The present invention will now be described with reference to an embodiment shown in the drawing. It shows purely schematically:
1 and 2
in vertical section, a switch pole at two different times of its manufacture;
Fig. 3
in view, the completed switch pole;
Fig. 4
in vertical section, the switch pole open on the head housing with parts removed for inspection work.

Der in den Figuren gezeigte, beispielsweise mit SF₆ druckgasisolierte Schalterpol 10 eines Hochspannungsleistungsschalters weist ein den Fuss des Schalterpols 10 bildendes Mechanismusgehäuse 12, beispielsweise aus Aluminiumguss, auf. Auf dem Mechanismusgehäuse 12 steht ein keramischer, rohrförmiger Stützisolator 14, zwischen dessen dem Mechanismusgehäuse 12 zugekehrten stirnseitigen Ende und einer entsprechenden Dichtfläche 12′ am Mechanismusgehäuse 12 eine ringförmige Dichtung 16 vorgesehen ist. Am Mechanismusgehäuse 12 ist eine ringartige Armatur 18 angeformt, die bezüglich der Dichtfläche 12′ in Richtung gegen den Stützisolator 14 vorsteht und dessen unteren Randbereich 14′ mit Abstand umgreift.The switch pole 10 of a high-voltage circuit breaker shown in the figures, for example with SF₆ compressed gas, has a mechanism housing 12, for example made of cast aluminum, which forms the base of the switch pole 10. On the mechanism housing 12 is a ceramic, tubular support insulator 14, between the end of the mechanism housing 12 facing end and a corresponding sealing surface 12 'on the mechanism housing 12, an annular seal 16 is provided. On the mechanism housing 12, an annular fitting 18 is formed, which protrudes with respect to the sealing surface 12 'in the direction against the support insulator 14 and which engages around the lower edge region 14' at a distance.

Auf dem Stützisolator 14 ist ein Zwischenteil 20 angeordnet, an dem auf der unteren, dem Stützisolator 14 zugewandten Seite ebenfalls eine Dichtfläche 20′ ausgebildet ist. Zwischen dem Zwischenteil 20 und dem Stützisolator 14 ist eine weitere ringförmige Dichtung 16′ vorgesehen, die an der Dichtfläche 20′ und am oberen stirnseitigen Ende des Stützisolators 14 anliegt. Am Zwischenteil 20 ist eine ringartige Armatur 22 angeformt, die den oberen Endbereich 14˝ des Stützisolators 14 mit Abstand umgreift.On the support insulator 14, an intermediate part 20 is arranged, on which on the lower, the support insulator 14 facing side also a sealing surface 20 'is formed. Between the intermediate part 20 and the support insulator 14, a further annular seal 16 'is provided, which bears against the sealing surface 20' and at the upper end of the support insulator 14. On the intermediate part 20, an annular fitting 22 is formed, which engages around the upper end region 14˝ of the support insulator 14 at a distance.

Auf das Zwischenteil 20 ist ein ebenfalls keramischer, rohrförmiger Schaltkammerisolator 24 gestellt, dessen untere Stirnseite an einer Ringdichtung 26 anliegt, die ihrerseits auf einer am Zwischenteil 20 ausgebildeten weiteren Dichtfläche 20˝ aufliegt. Auch der untere Endbereich 24′ des Schaltkammerisolators 24 ist von einer ebenfalls am Zwischenteil 20 angeformten Armatur 28 mit Abstand umgriffen.A likewise ceramic, tubular interrupter isolator 24 is placed on the intermediate part 20, the lower end face of which rests on an annular seal 26 which in turn rests on a further sealing surface 20˝ formed on the intermediate part 20. The lower end region 24 'of the interrupter insulator 24 is surrounded by a fitting 28 which is also formed on the intermediate part 20 at a distance.

Am oberen Ende des Schaltkammerisolators 24 sitzt auf diesem unter Zwischenschaltung einer weiteren Ringdichtung 26′ ein Kopfgehäuse 30, das auf seiner unteren, dem Schaltkammerisolator 24 zugewandten Seite ebenfalls eine mit der Ringdichtung 26′ zusammenwirkende Dichtfläche 30′ aufweist und an dem ebenfalls eine Armatur 32 angeformt ist, die gegenüber der Dichtfläche 30′ in Richtung gegen den Schaltkammerisolator 24 vorsteht und dessen oberen Randbereich 24˝ mit Abstand umgreift. Die Ringdichtung 26′ liegt auf der oberen Stirnseite des Schaltkammerisolators 24 auf.At the upper end of the switching chamber insulator 24 sits on this with the interposition of a further ring seal 26 'a head housing 30 which on its lower side facing the switching chamber insulator 24 also has a sealing surface 30' cooperating with the ring seal 26 'and on which a fitting 32 is also formed is, which protrudes relative to the sealing surface 30 'in the direction against the switching chamber insulator 24 and engages around its upper edge region 24˝ at a distance. The ring seal 26 'lies on the upper end face of the interrupter isolator 24.

Das Kopfgehäuse 30 weist auf seiner oberen Seite eine im Querschnitt etwa kreisförmige Oeffnung 31 auf, die von einem wegnehmbaren Deckel 34 gasdicht verschlossen ist. Der Deckel 34 ist mittels nicht dargestellten Schrauben am Kopfgehäuse 30 befestigt. Die das Gehäuse 36 des Schalterpols 10 bildenden Teile, nämlich das Mechanismusgehäuse 12, der Stützisolator 14, das Zwischenteil 20, der Schaltkammerisolator 24 und das Kopfgehäuse 30 mit dem Deckel 34 werden dadurch aneinander befestigt, dass die Räume zwischen den Armaturen 18, 22 und dem Stützisolator 14 sowie die Räume zwischen den Armaturen 28, 32 und dem Schaltkammerisolator 24 mit einer Giessmasse 38 ausgegossen werden. Die Giessmasse 38 übernimmt dabei keine Dichtfunktion, sondern stellt nur die mechanisch feste Verbindung zwischen den entsprechenden Teilen sicher. Die Dichtfunktion wird von den Dichtungen 16, 16′ und Ringdichtungen 26, 26′ wahrgenommen.On its upper side, the head housing 30 has an opening 31 which is approximately circular in cross section and which is closed in a gastight manner by a removable cover 34. The cover 34 is fastened to the head housing 30 by means of screws, not shown. The parts forming the housing 36 of the switch pole 10, namely the mechanism housing 12, the support insulator 14, the intermediate part 20, the switching chamber insulator 24 and the head housing 30 with the cover 34 are fastened to one another in that the spaces between the fittings 18, 22 and the Post insulator 14 and the spaces between the fittings 28, 32 and the switching chamber insulator 24 are poured out with a casting compound 38. The casting compound 38 does not perform a sealing function, but only provides the mechanically firm connection between the corresponding parts safely. The sealing function is performed by the seals 16, 16 'and ring seals 26, 26'.

In das Innere des Mechanismusgehäuses 12 ist eine Antriebswelle 40 dicht eingeführt und diese ist am Mechanismusgehäuse 12 in bekannter Art und Weise drehbar gelagert. Auf die Antriebswelle 40 ist ein Antriebshebel 42 aufgekeilt, an dessen freiem Ende eine isolierende Antriebsstange 44, die in axialer Richtung den Stützisolator 14 durchgreift, angelenkt ist. Das obere Ende der Antriebsstange 44 ist mit einem Ausblasrohr 46 verbunden, an dessen oberen Ende ein tulpenförmiges, bewegbares Kontaktstück 48 befestigt ist. Im Bereich des oberen Endes des Ausblasrohres 46 steht von diesem ein Boden 50 eines Kompressionszylinders 52 ab, dessen Mantel 52′ das Ausblasrohr 46 koaxial mit Abstand umgreift. Der Boden 50 weist in axialer Richtung verlaufende Durchlässe 54 auf, die den vom tulpenförmigen Kontaktstück 48 und einer dieses umgebenden Isolierstoffdüse 56 begrenzten Raum mit einem vom Ausblasrohr 46 und Kompressionszylinder 52 sowie einem ringförmigen Kolben 58 begrenzten Kompressionsraum strömungsmässig verbinden. Der Kolben 58 ist über Stützen 60 am Zwischenteil 20 abgestützt und an diesem einstückig angeformt. Im weiteren durchdringt das Ausblasrohr 46 das Zwischenteil 20 und ist an diesem verschiebbar gelagert.A drive shaft 40 is tightly inserted into the interior of the mechanism housing 12 and is rotatably mounted on the mechanism housing 12 in a known manner. A drive lever 42 is wedged onto the drive shaft 40, at the free end of which an insulating drive rod 44, which passes through the support insulator 14 in the axial direction, is articulated. The upper end of the drive rod 44 is connected to a blow-out tube 46, at the upper end of which a tulip-shaped, movable contact piece 48 is fastened. In the area of the upper end of the blow-out tube 46, a base 50 of a compression cylinder 52 protrudes therefrom, the jacket 52 'of which coaxially surrounds the blow-out tube 46 at a distance. The base 50 has passages 54 running in the axial direction, which flow-wise connect the space delimited by the tulip-shaped contact piece 48 and an insulating material nozzle 56 surrounding it to a compression space delimited by the blow-out pipe 46 and compression cylinder 52 and an annular piston 58. The piston 58 is supported on supports 60 on the intermediate part 20 and is integrally formed thereon. Furthermore, the blow-out pipe 46 penetrates the intermediate part 20 and is slidably mounted thereon.

Weiter sind am elektrisch leitenden Zwischenteil 20 Gleitkontaktstücke 62 angeordnet, die auf der Aussenseite des aus elektrisch leitendem Material gefertigten Kompressionszylinders 52 am Mantel 52′ anliegen, um diesen elektrisch mit dem Zwischenteil 20 zu verbinden.Next on the electrically conductive intermediate part 20 sliding contact pieces 62 are arranged, which rest on the outside of the compression cylinder made of electrically conductive material 52 on the jacket 52 'to electrically connect this to the intermediate part 20.

Am Zwischenteil 20 ist weiter ein unterer Anschluss 64 des Schalterpols 10 angeformt, wie dies aus Fig. 3 besonders gut ersichtlich ist.A lower connection 64 of the switch pole 10 is also formed on the intermediate part 20, as can be seen particularly well from FIG. 3.

Am im wesentlichen ringförmigen Kopfgehäuse 30 ist ein Kontaktträger 66 beispielsweise mittels Schrauben befestigt, an dem ein rohrartig ausgebildetes, koaxial zur Längsachse des Schalterpols 10 angeordnetes festes Kontaktstück 68 fixiert ist. Dieses feste Kontaktstück 68 wirkt mit dem tulpenförmig ausgebildeten, beweglichen Kontaktstück 48 zusammen und wird von diesem in Einschaltstellung, die in Fig. 1 gestrichelt angedeutet ist, elektrisch leitend umgriffen. Dabei verschliesst es den Hals der Isolierstoffdüse 56. Dieser wird beim Ausschalten wieder freigegeben.A contact carrier 66 is fastened to the substantially annular head housing 30, for example by means of screws, to which a fixed contact piece 68, which is coaxial to the longitudinal axis of the switch pole 10, is fixed. This fixed contact piece 68 interacts with the tulip-shaped, movable contact piece 48 and is encompassed in an electrically conductive manner by the latter in the switched-on position, which is indicated by dashed lines in FIG. 1. It closes the neck of the insulating material nozzle 56, which is released again when it is switched off.

Am Kopfgehäuse 30 ist weiter der obere Anschluss 70 des Schalterpols 10 angeformt, wie dies in der Figur 3 gezeigt ist. Weiter stehen im Inneren des Gehäuses 36 vom Kopfgehäuse 30 zum festen Kontaktstück 68 etwa koaxiale Gleitkontaktfinger 72 ab, die in Einschaltstellung am Mantel 52′ des Kompressionszylinders 52 anliegen und eine niederohmige elektrische Verbindung zwischen dem oberen Anschluss 70 und dem unteren Anschluss 64 über den Kompressionszylinder 52 und die Gleitkontaktstücke 62 sicherstellen.The upper connection 70 of the switch pole 10 is also formed on the head housing 30, as shown in FIG. 3. Next are in the interior of the housing 36 from the head housing 30 to the fixed contact piece 68 from about coaxial sliding contact fingers 72, which rest in the switched-on position on the jacket 52 'of the compression cylinder 52 and a low-resistance electrical connection between the upper connection 70 and the lower connection 64 via the compression cylinder 52 and ensure the sliding contact pieces 62.

In den Figuren 1 und 2 ist der Schalterpol 10 in einer um die horizontale Achse 74 drehbaren Halterung 76 eingespannt gezeigt. Diese weist ein plattenartiges Auflageorgan 78 für das Mechanismusgehäuse 12 sowie ein ringartiges Halteglied 80, das sich an einer Schulter 82 des Kopfgehäuses 30 ausserhalb des Bereichs des Deckels 34 abstützt, auf. Das Auflageorgan 78 und das Halteglied 80 sind mittels diese durchdringenden Zugankern 84 gegeneinander gespannt. Zu diesem Zweck weisen die Zuganker 84 in ihren Endbereichen Gewinde auf, auf denen Muttern 86 sitzen. An den Zugankern 84 sind etwa mittig Schwenkbolzen 88 befestigt, die zur horizontalen Achse 74 koaxial verlaufen und die an den seitlichen Schenkeln eines U-förmigen Tragbügels 90 gelagert sind. Am zu den seitlichen Schenkeln querverlaufenden Steg 92 ist ein Loch 92′ angebracht, um die Halterung 76 für die Lagerung bzw. bei der Montage des Schalterpols 10 am gewünschten Ort aufhängen zu können.In FIGS. 1 and 2, the switch pole 10 is shown clamped in a holder 76 rotatable about the horizontal axis 74. This has a plate-like support member 78 for the mechanism housing 12 and a ring-like Holding member 80, which is supported on a shoulder 82 of the head housing 30 outside the region of the cover 34. The support member 78 and the holding member 80 are tensioned against each other by means of these tie rods 84. For this purpose, the tie rods 84 have threads in their end regions, on which nuts 86 are seated. On the tie rods 84, pivot pins 88 are fastened approximately centrally, which run coaxially with the horizontal axis 74 and which are mounted on the side legs of a U-shaped support bracket 90. At the transverse to the lateral legs of the web 92, a hole 92 'is made in order to be able to hang the holder 76 for the storage or assembly of the switch pole 10 at the desired location.

Schliesslich sei noch erwähnt, dass das Mechanismusgehäuse 12 einen Anschlussstutzen 94 aufweist, um die Verbindung zu einer Vakuumpumpe, einer Druckquelle oder einer Druckgas-Fülleinrichtung, beispielsweise zum Einfüllen von SF₆, zu ermöglichen. Eine derartige Verbindung ist in Fig. 1 durch die Leitung 96 angedeutet.Finally, it should also be mentioned that the mechanism housing 12 has a connecting piece 94 in order to enable the connection to a vacuum pump, a pressure source or a compressed gas filling device, for example for filling SF₆. Such a connection is indicated in FIG. 1 by line 96.

Die in den Figuren 1 und 2 gezeigte krugförmige Giesspfanne 98 zeigt symbolisch das Ausgiessen der betreffenden Räume zwischen den Armaturen 28 bzw. 32 und dem Schaltkammerisolator 24 mit Giessmasse 38.The jug-shaped casting ladle 98 shown in FIGS. 1 and 2 symbolically shows the pouring of the relevant spaces between the fittings 28 and 32 and the switching chamber insulator 24 with casting compound 38.

Der oben beschriebene und in den Figuren gezeigte Schalterpol 10 wird wie folgt montiert: Das Mechanismusgehäuse 12 mit der daran vormontierten Antriebswelle 40, dem Antriebshebel 42 und der Antriebsstange 44 wird auf das Auflageorgan 78 gestellt. Die ringförmige Dichtung 16 wird auf die Dichtfläche 12′ gelegt und der Stützisolator 14 auf die Dichtung 16 abgestellt. Anschliessend wird das Zwischenteil 20 zusammen mit dem daran vormontierten Ausblasrohr 46, Kontaktstück 48, Kompressionszylinder 52 und der Isolierstoffdüse 56 auf die stirnseitig auf den Stützisolator 14 gelegte ringförmige Dichtung 16′ gestellt, wobei vor dem Abstellen die Antriebswelle 40 im Gegenuhrzeigersinn verdreht wurde, um den Antriebshebel 42 in die strich-punktiert angedeutete Stellung zu bringen, um das problemlose Verbinden des oberen Endes der Antriebsstange 44 mit dem Ausblasrohr 46, beispielsweise mittels eines Stiftes, zu ermöglichen. Durch diese Stellung der Antriebswelle 40 bleiben beim Abstellen des Zwischenteils 20 sämtliche mit dem Ausblasrohr 46 verbundenen Teile in der in der Figur 1 gestrichtelt angedeuteten Einschaltstellung. Nachdem auf die Dichtfläche 20˝ des Zwischenteils 20 die Ringdichtung 26 gelegt worden ist, wird der Schaltkammerisolator 24 auf diese Ringdichtung 26 abgestellt und dann wird das Kopfgehäuse 30 mit dem daran vormontierten Kontaktträger 66 und Kontaktstück 68 auf die stirnseitig auf den Schaltkammerisolator 24 gelegte Ringdichtung 26′ abgesetzt. Da sich das bewegbare Kontaktstück 48 in der Einschaltstellung befindet, kommt dabei das feste Kontaktstück 68 mit dem Kontaktstück 48 in Eingriff, so dass zwangsläufig die beiden Kontaktstücke 48, 68 aufeinander ausgerichtet sind. Es ist zu beachten, dass sämtliche Teile des Gehäuses 36 lose aufeinander gestapelt sind, so dass ein Ausrichten der einzelnen Teile immer noch problemlos möglich ist.The switch pole 10 described above and shown in the figures is assembled as follows: The mechanism housing 12 with the drive shaft 40 preassembled thereon, the drive lever 42 and the drive rod 44 is placed on the support member 78. The annular seal 16 is placed on the sealing surface 12 'and the support insulator 14th placed on the seal 16. Subsequently, the intermediate part 20 together with the pre-assembled blowpipe 46, contact piece 48, compression cylinder 52 and the insulating nozzle 56 on the end face placed on the support insulator 14 annular seal 16 ', the drive shaft 40 being rotated counterclockwise before being turned off To bring the drive lever 42 into the position indicated by dash-dotted lines in order to enable the upper end of the drive rod 44 to be connected to the blow-out tube 46, for example by means of a pin, without problems. As a result of this position of the drive shaft 40, when the intermediate part 20 is switched off, all the parts connected to the blow-out tube 46 remain in the switch-on position indicated by the broken line in FIG. 1. After the ring seal 26 has been placed on the sealing surface 20˝ of the intermediate part 20, the switching chamber insulator 24 is placed on this ring seal 26 and then the head housing 30 with the preassembled contact carrier 66 and contact piece 68 is placed on the end face of the switching chamber insulator 24 ' discontinued. Since the movable contact piece 48 is in the switch-on position, the fixed contact piece 68 comes into engagement with the contact piece 48, so that the two contact pieces 48, 68 are necessarily aligned with one another. It should be noted that all parts of the housing 36 are loosely stacked on top of one another, so that alignment of the individual parts is still possible without any problems.

Nachdem der Deckel 34 auf das Kopfgehäuse 30 gelegt worden ist, wird nun die Leitung 96 mit einer nicht gezeigten Vakuumquelle verbunden, um den Schalterpol 10 zu evakuieren.After the cover 34 has been placed on the head housing 30, the line 96 is now connected to a vacuum source, not shown, in order to evacuate the switch pole 10.

Dadurch werden die lose aufeinander gestapelten Teile gegeneinander fixiert, und gleichzeitig kann die Dichtigkeit des Gehäuses 36 geprüft werden. Falls dabei die Dichtigkeitsprüfung Mängel aufweisen sollte, ist ein schnelles und problemloses Demontieren des Schalterpols 10 immer noch möglich. Durch Aufsetzen des Haltegliedes 80 auf die Schulter 82 des Kopfgehäuses 30 und das Spannen der Zuganker 84 mittels der Muttern 86 wird der Schalterpol 10 in der Halterung 76 fixiert, und zugleich werden die Dichtungen 16, 16′, 26, 26′ noch weiter vorgespannt. Gegebenenfalls kann jetzt eine weitere Dichtigkeitsprüfung gemacht werden, indem die Leitung 96 mit einer Druckquelle verbunden wird, um in Innern des Gehäuses 36 Ueberdruck zu erzeugen. Falls bis dahin sämtliche qualitätssichernden Kontrollen positiv verlaufen sind, werden nun sämtliche nach oben offenen Räume zwischen den Armaturen und Isolatoren, im vorliegenden Fall zwischen der Armatur 18 des Mechanismusgehäuses 12 und dem Stützisolator 14 sowie der Armatur 28 des Zwischenteils 20 und dem Schaltkammerisolator 24, mit der Giessmasse 38 gefüllt. Nachdem diese Giessmasse mindestens teilweise ausgehärtet ist, wird der Schalterpol 10 durch Drehen der Halterung 76 um die Horizontalachse 74 auf den Kopf gestellt, wie dies Fig. 2 zeigt. Nun werden die gegen oben offenen Räume zwischen den betreffenden Armaturen und Isolatoren, im vorliegenden Fall zwischen der Armatur 32 des Kopfgehäuses 30 und dem Schaltkammerisolator 24 sowie der Armatur 22 des Zwischenteils 20 und dem Stützisolator 14, mit Giessmasse 38 gefüllt. Sobald auch diese Giessmasse mindestens teilweise ausgehärtet ist, kann der Schalterpol 10 wieder in seine richtige Lage zurückgedreht werden. Nach dem Aushärten der Giessmasse werden die Zuganker 84 gelöst und das Halteglied 80 vom Kopfgehäuse 30 entfernt. Der fertige Schalterpol 10, wie er in der Figur 3 gezeigt ist, steht nun für weitere qualitätssichernde Prüfungen, wie Druck- und/oder Umbruchprüfung, und gegebenenfalls zum Auffüllen mit Druckgas und zur Auslieferung zur Verfügung.As a result, the loosely stacked parts are fixed against one another, and at the same time the tightness of the housing 36 can be checked. If the leak test should show defects, a quick and easy removal of the switch pole 10 is still possible. By placing the holding member 80 on the shoulder 82 of the head housing 30 and tensioning the tie rod 84 by means of the nuts 86, the switch pole 10 is fixed in the holder 76, and at the same time the seals 16, 16 ', 26, 26' are further biased. If necessary, a further leak test can now be carried out by connecting the line 96 to a pressure source in order to generate excess pressure in the interior of the housing 36. If by then all quality assurance checks have been positive, all open spaces between the fittings and insulators, in the present case between the fitting 18 of the mechanism housing 12 and the support insulator 14 and the fitting 28 of the intermediate part 20 and the switching chamber insulator 24, are now included the casting compound 38 filled. After this casting compound has at least partially hardened, the switch pole 10 is turned upside down by rotating the holder 76 about the horizontal axis 74, as shown in FIG. 2. Now the spaces open towards the top between the relevant fittings and insulators, in the present case between the fitting 32 of the head housing 30 and the switching chamber insulator 24 as well as the fitting 22 of the intermediate part 20 and the supporting insulator 14, are filled with casting compound 38. As soon as this casting compound has at least partially hardened, the switch pole 10 can be turned back into its correct position. After the casting compound has hardened, the tie rods 84 and the holding member are released 80 removed from the head housing 30. The finished switch pole 10, as shown in FIG. 3, is now available for further quality assurance tests, such as pressure and / or break testing, and if necessary for filling up with compressed gas and for delivery.

Für eventuelle Kontroll- und Revisionsarbeiten ist an sich nur das Druckgas aus dem Schalterpol 10 zu entfernen, und nach dem Entfernen des Deckels 34 vom Kopfgehäuse 30 sind die aktiven Schalterteile zugänglich. Durch Lösen des Kontaktträgers 66 kann das feste Kontaktstück 68 aus dem Schalterpol 10 entfernt werden. Durch Herausziehen der Antriebswelle 40 wird der Antriebshebel 42 freigegeben, wonach das bewegbare Kontaktstück 48 mit der Isolierstoffdüse 56, dem Kompressionszylinder 52 und dem Ausblasrohr 46 vom Zwischenteil 20 nach oben abgezogen werden kann, wie dies Fig. 4 zeigt. Dabei wird ebenfalls die isolierende Antriebsstange 44 und der Antriebshebel 42 mitgenommen. Bei der Wiedermontage der aus dem Gehäuse 36 entfernten Teile wird in umgekehrter Reihenfolge vorgegangen, wobei das Aufstecken des Antriebshebels 42 auf die Antriebswelle 40 beispielsweise dadurch ermöglicht wird, dass zum Hineingreifen in das Mechanismusgehäuse 12, in diesem in axialer Richtung der Antriebswelle 40 zwei Oeffnungen vorgesehen sind, wobei diejenige Oeffnung mit einem Deckel verschliessbar ist, durch die hindurch die Antriebswelle 40 nicht nach aussen dringt.For possible control and revision work, only the compressed gas is to be removed from the switch pole 10, and after the cover 34 has been removed from the head housing 30, the active switch parts are accessible. The fixed contact piece 68 can be removed from the switch pole 10 by loosening the contact carrier 66. The drive lever 42 is released by pulling out the drive shaft 40, after which the movable contact piece 48 with the insulating material nozzle 56, the compression cylinder 52 and the blow-out pipe 46 can be pulled upwards from the intermediate part 20, as shown in FIG. 4. The insulating drive rod 44 and the drive lever 42 are also carried along. The process of reassembling the parts removed from the housing 36 is carried out in the reverse order, the pushing of the drive lever 42 onto the drive shaft 40 being made possible, for example, by providing two openings in the axial direction of the drive shaft 40 for reaching into the mechanism housing 12 are, that opening can be closed with a cover through which the drive shaft 40 does not penetrate to the outside.

Es ist selbstverständlich auch möglich, gemäss dem vorgeschlagenen Verfahren Schalterpole zu montieren, bei denen die den Stützisolator und Schaltkammerisolator umgebenden Armaturen nicht an Mechanismusgehäuse, Zwischenteil und Kopfgehäuse angeformt sind. Dabei werden die betreffenden Armaturen mit dem Mechanismusgehäuse, Zwischenteil und Kopfgehäuse, beispielsweise mittels Schraubenverbindungen, befestigt und die Teile des Schalterpols 10 lose aufeinander gestapelt und ausgerichtet, bevor dann anschliessend die Räume zwischen den Armaturen und den Isolatoren ausgegossen werden.It is of course also possible, according to the proposed method, to install switch poles in which the fittings surrounding the post insulator and switching chamber insulator are not attached to the mechanism housing, intermediate part and Head housing are molded. The fittings in question are attached to the mechanism housing, intermediate part and head housing, for example by means of screw connections, and the parts of the switch pole 10 are loosely stacked and aligned before the spaces between the fittings and the insulators are then poured out.

Das vorgeschlagene Verfahren eignet sich zur Herstellung von Schalterpolen sowohl für Hochspannungs- als auch für Mittelspannungsschalter sowie für Schalter mit keramischen Isolatoren als auch solchen mit Kunststoff-Isolatoren.The proposed method is suitable for producing switch poles both for high-voltage and for medium-voltage switches and for switches with ceramic insulators and those with plastic insulators.

Falls keine Revisions- und Kontrollarbeiten im Inneren des Schalterpols notwendig sind, kann ein Kopfgehäuse ohne wegnehmbaren Deckel vorgesehen werden.If no inspection and inspection work is required inside the switch pole, a head housing without a removable cover can be provided.

Claims (13)

  1. Method for producing a switch pole (10) for a medium- or high-voltage switch, in the case of which a supporting insulator (14), which is penetrated by an insulating drive rod (44), is connected in a mechanically fixed manner at one end to a mechanism housing (12), into which a drive element (40) connected to the drive rod (44) is introduced in a sealed manner, and at the other end to an intermediate part (20) which carries the one connection (64) and is electrically connected to a moveable contact piece (48) coupled to the drive rod (44), and in the case of which a switching chamber insulator (24) is connected in a mechanically fixed manner at one end to the intermediate part (20) and at the other end to a top housing (30), which carries the other connection (70) and a fixed contact piece (68) interacting with the moveable contact piece (48), fittings (18, 22, 28, 32) being provided for the connections of the supporting insulator (14) to the mechanism housing (12) and intermediate part (20) and for the connections of the switching chamber insulator (24) to the intermediate part (20) and top housing (30), which fittings are each connected, on the one hand, to the insulator (14, 24), by introducing casting compound (38) into the annular space between the relevant insulator (14, 24) and the fitting (18, 22, 28, 32), and, on the other hand, to the assigned mechanism housing (12), intermediate part (20) or top housing (30), characterized in that at least one fitting (18, 22, 28, 32) is firstly connected to the assigned mechanism housing (12), intermediate part (20) or top housing (30) and the assigned mechanism housing (12), intermediate part (20) or top housing (30) is aligned and only then is this fitting (18, 22, 28, 32) sealed to the assigned insulator (14, 24).
  2. Method according to Claim 1, characterized in that the mechanism housing (12), the intermediate part (20) and the top housing (30) are connected to the corresponding fittings (18, 22, 28, 32), the mechanism housing (12), the supporting insulator (14), the intermediate part (20), the switching chamber insulator (24) and the top housing (30) are stacked loosely one on top of the other, the contact pieces (48, 68) are engaged with one another for the purpose of aligning and subsequently the parts (12, 14, 20, 24, 30) stacked one on top of the other are fixed with respect to one another, and in that then the upwardly open spaces between the insulators (14, 24) and fittings (18, 28) are filled in and, after the at least partial curing of the casting compound (38), the switch pole (10) is rotated about an approximately horizontal axis (74) and the remaining spaces are filled in.
  3. Method according to Claim 2, characterized in that the parts (12, 14, 20, 24, 30) of the switch pole (10) which are to be stacked one on top of the other are stacked one on top of the other in a mount (76) which can be rotated about the approximately horizontal axis (74).
  4. Method according to Claim 3, characterized in that, for the purpose of fixing the parts (12, 14, 20, 24, 30) stacked one on top of the other, these parts are clamped with respect to one another by means of the mount (76).
  5. Method according to one of Claims 2 to 4, characterized in that, for the purpose of fixing the parts (12, 14, 20, 24, 30) stacked one on top of the other, the switch pole (10) is evacuated.
  6. Method according to one of Claims 2 to 5, characterized in that prior to sealing a tightness test of the switch pole (10) is carried out.
  7. Method according to one of Claims 2 to 6, characterized in that a pressure and/or cantilever test is performed on the entire switch pole (10) after the curing of the casting compound (38) in all the fittings (18, 22, 28, 32).
  8. Method according to one of Claims 1 to 7, characterized in that the fittings (18, 22, 28, 32) are integrally moulded onto the mechanism housing (12), intermediate part (20) and top housing (30) during the production of the latter.
  9. Device exclusively for carrying out the method according to one of Claims 2 to 7, characterized by a mount (76) which can be rotated about an approximately horizontal axis (74) and has a bearing member (78) for the mechanism housing (12) and has a holding element (80) for the top housing (30), in order to fix the switch pole (10) in the mount (76) for the purpose of rotating the said switch pole.
  10. Device according to Claim 9, characterized in that the bearing member (78) and the holding element (80) can be clamped with respect to one another.
  11. Switch pole (10) for a medium- or high-voltage switch, having a mechanism housing (12), a supporting insulator (14), an intermediate part (20), a switching chamber insulator (24) and a top housing (30), characterized in that at least one ring-like fitting (18, 22, 28, 32) surrounding the edge region (14′, 14˝; 24′, 24˝) of the assigned insulator (14, 24) at a distance is integrally moulded in each case on the mechanism housing (12), on the intermediate part (20) and on the top housing (30).
  12. Switch pole according to Claim 11, characterized in that the fixed contact piece (68) is held by a contact carrier (66) which is fastened removably on the top housing (30), and the contact carrier (66) with the contact piece (68) can be removed from the switch pole (10) through an opening (31) in the top housing (30), which opening can be closed off by a cover (34).
  13. Switch pole according to Claim 12, characterized in that the moveable contact piece (48) and the switch parts (46, 52, 56) which are also moved with the latter can be removed, together with the drive rod (44), from the switch pole (10) through the opening (31).
EP92111394A 1991-07-23 1992-07-04 Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch Expired - Lifetime EP0524472B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH219991 1991-07-23
CH2199/91 1991-07-23

Publications (2)

Publication Number Publication Date
EP0524472A1 EP0524472A1 (en) 1993-01-27
EP0524472B1 true EP0524472B1 (en) 1995-09-20

Family

ID=4228216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111394A Expired - Lifetime EP0524472B1 (en) 1991-07-23 1992-07-04 Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch

Country Status (7)

Country Link
US (1) US5269055A (en)
EP (1) EP0524472B1 (en)
JP (1) JPH05205602A (en)
AT (1) ATE128263T1 (en)
CA (1) CA2074543C (en)
DE (1) DE59203730D1 (en)
ES (1) ES2077302T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101707152B (en) * 2009-12-04 2012-02-29 镇江大全伊顿电器有限公司 Fixture for assembling vacuum interrupter and tripping spring seat

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402572B1 (en) * 1997-11-25 2002-06-11 Hendry Mechanical Works Electric switching device assembly system
CN103439652B (en) * 2013-06-27 2015-10-28 国家电网公司 Circuit breaker polar test unit
CN103528621B (en) * 2013-10-15 2016-04-06 中国振华电子集团宇光电工有限公司（国营第七七一厂） Pole detects transmitting device automatically
CA2939796A1 (en) 2014-02-20 2015-08-27 Cooper Technologies Company Modular switchgear insulation system
USD800667S1 (en) 2015-02-20 2017-10-24 Cooper Technologies Company Modular switchgear insulation device
CN111113295B (en) * 2019-12-03 2022-05-20 河南平高通用电气有限公司 Support tool for solid-sealed polar pole
CN113035610A (en) * 2019-12-09 2021-06-25 河南平高电气股份有限公司 Single-pole assembly tool for isolating switch
CN114147472B (en) * 2021-12-21 2022-11-01 河南卓达电气有限公司 Integrative rigging equipment of high voltage circuit breaker accessory
CN114714085B (en) * 2022-05-19 2023-11-21 上海美荃科技有限公司 Automatic assembly system and assembly method for switch contact spring

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8325894U1 (en) * 1983-12-22 Siemens AG, 1000 Berlin und 8000 München Switching chamber for a compressed gas circuit breaker
US2374058A (en) * 1943-07-29 1945-04-17 Westinghouse Electric & Mfg Co Circuit breaker
GB1282569A (en) * 1968-12-23 1972-07-19 Ass Elect Ind Improvements relating to gas blast interrupters
DE3203666C2 (en) * 1982-02-04 1985-06-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device for measuring the tightness of gas-filled, porcelain-insulated electrical switches
DE8704775U1 (en) * 1987-03-31 1988-07-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101707152B (en) * 2009-12-04 2012-02-29 镇江大全伊顿电器有限公司 Fixture for assembling vacuum interrupter and tripping spring seat

Also Published As

Publication number Publication date
ATE128263T1 (en) 1995-10-15
DE59203730D1 (en) 1995-10-26
ES2077302T3 (en) 1995-11-16
US5269055A (en) 1993-12-14
EP0524472A1 (en) 1993-01-27
JPH05205602A (en) 1993-08-13
CA2074543A1 (en) 1993-01-24
CA2074543C (en) 2002-07-09

Similar Documents

Publication Publication Date Title
DE69731480T2 (en) VERTICAL SCREEN-RESISTANT UMBRELLAS
EP0524472B1 (en) Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch
EP0405253A1 (en) Three phase gas insulated switchgear
DE2354632A1 (en) ELECTRIC BREAKER
EP0232471B1 (en) High-voltage current transducer and method for producing it
DE7212043U (en) High voltage switch
DE3540547C2 (en)
DE714040C (en) Circuit breakers, especially for high voltages
DE2836587C2 (en)
EP0086734B1 (en) Gas insulated metal clad high-voltage installation
DE3526676C2 (en)
EP0554686A1 (en) Gas blast switch
DE2458376B2 (en) HIGH VOLTAGE CIRCUIT BREAKER
DE3904148A1 (en) METAL-ENCLOSED COMPRESSED GAS CIRCUIT BREAKER WITH A SHIFT ROD
DE4435359C2 (en) Pole column of an electrical circuit breaker
EP2930804A1 (en) Method for operating a switch assembly
DE1181298B (en) Circuit breaker
DE102017221783A1 (en) Arrangement and method for switching high voltages with a switching device and exactly one resistance stack
DE4319378A1 (en) Compressed-gas, high-voltage power circuit breaker (power switch) which can be installed in a fixed position and has a supporting function for gas-insulated switching installation components
EP0054726A2 (en) Device for earthing the live parts of metal-clad switchgear and for testing of the cables connected to said switchgear
WO2006084401A1 (en) Switch terminal
CH693937A5 (en) A multi-pole high-voltage circuit breakers.
WO2003017291A1 (en) High-voltage lead-through
DE1223918B (en) Electric switch with a compression device
EP0718942A2 (en) High voltage installation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19930430

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEC ALSTHOM T&D AG

17Q First examination report despatched

Effective date: 19940530

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI SE

REF Corresponds to:

Ref document number: 128263

Country of ref document: AT

Date of ref document: 19951015

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: ING. CARLO DE PASQUALE

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59203730

Country of ref document: DE

Date of ref document: 19951026

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951002

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2077302

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: GEC ALSTHOM T&D AG TRANSFER- GEC ALSTHOM AG * GEC ALSTHOM AG TRANSFER- ALSTOM AG

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040630

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20040702

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20040705

Year of fee payment: 13

Ref country code: AT

Payment date: 20040705

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040706

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040708

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040716

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050704

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050705

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050705

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060331

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050705