EP1139367B1 - Load-breaking module with vacuum bottle and fixing means, and switchgear using such a module - Google Patents

Load-breaking module with vacuum bottle and fixing means, and switchgear using such a module Download PDF

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Publication number
EP1139367B1
EP1139367B1 EP01410018A EP01410018A EP1139367B1 EP 1139367 B1 EP1139367 B1 EP 1139367B1 EP 01410018 A EP01410018 A EP 01410018A EP 01410018 A EP01410018 A EP 01410018A EP 1139367 B1 EP1139367 B1 EP 1139367B1
Authority
EP
European Patent Office
Prior art keywords
collar
rod
cartridge
module according
bulb
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
EP01410018A
Other languages
German (de)
French (fr)
Other versions
EP1139367A1 (en
Inventor
Reynald Marin-Pache
Thierry Milan
Denis Milan
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1139367A1 publication Critical patent/EP1139367A1/en
Application granted granted Critical
Publication of EP1139367B1 publication Critical patent/EP1139367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements

Definitions

  • the invention relates to a module for electrical switchgear, comprising a vacuum bulb and means for fixing the bulb to a support frame. It also relates to an apparatus comprising at least one such module.
  • a vacuum interrupter comprises a body forming a sealed enclosure and enclosing a pair of separable contacts, with at least one movable contact.
  • the movable contact is secured to a metal rod movable in translation parallel to its axis and projecting at a first axial end of the bulb.
  • a seal is made between the rod and a wall of the enclosure, by means of a bellows allowing the translational movement of the rod.
  • This rod is intended to be connected to a drive mechanism of the bulb.
  • the other contact is in general a fixed contact secured to a fixed rod which passes through the body of the bulb, so as to be accessible from the outside to a second axial end of the bulb, opposite to the first.
  • the movable rod is guided in its axial movement relative to the bulb through a guide sleeve integral with the body of the bulb and projecting inwardly of the bulb.
  • a guide sleeve integral with the body of the bulb and projecting inwardly of the bulb.
  • each phase comprises a vacuum bulb of the type described above, supported by a rigid frame of insulating material.
  • the body of the bulb On the side of the first axial end, the body of the bulb is fixed to the frame by means of a support plate provided with a bore with the diameter of the first axial end, and forming a seat for the body of the bulb.
  • the body of the bulb On the side of the second axial end, the body of the bulb is fixed to the frame by means of a fixed rod fixing nut to an electrical connection range secured to the frame. There is no interaction between the support plate and the rod.
  • the bonding operation of the bonding necessarily takes place after the bulb has been mounted on the support plate, since the bonded connection is too large to pass through the bore of the plate support. Furthermore, the positioning of the bulb on its frame must be performed accurately, so as not to solicit the rod of the movable contact out of its axis of translation determined by the inner guide sleeve to the bulb. These points prove disadvantageous during the industrialization of the equipment.
  • An object of the invention is to facilitate the assembly of electrical switchgear vacuum interrupter, including the break module constituted by the bulb and its support frame.
  • the collar allows both the guiding of the rod relative to the bulb and the fixing of the bulb relative to the frame.
  • the chain of dimensions is reduced, resulting in greater guiding accuracy, provided at low cost.
  • the frame is provided with guide rails and the collar is slidably shaped so as to slide in said guide rails, in a direction perpendicular to the geometric axis of the light. It is then possible to assemble the bulb and its collar, before inserting the assembly in the frame, by sliding the collar in the slides.
  • the fastening means comprise elastic clips forming a fastening by clips. This fastening mode by staples makes mounting particularly simple.
  • the staples are preferably located on the collar, and cooperate with supports located on the frame.
  • the collar is composed of two parts able to take one relative to the other an open position allowing the radial insertion of the stem of the bulb and a closed position ensuring the cooperation of the radial positioning surfaces with the body of the bulb, and light with the stem.
  • This particularly advantageous arrangement makes it possible to mount the flexible conductor on the stem of the bulb before mounting the collar to fix the bulb in its frame.
  • the two parts of the collar are hinged to each other by a hinge.
  • the two parts of the collar in the closed position are fixed to one another by fixing means.
  • the collar is provided with axial positioning surface constituting a seat for an axial end portion of the body of the bulb.
  • the positioning of the collar is simplified.
  • the collar is made of plastic. It may be for example a polyamide 6-6.
  • the module comprises a single vacuum bulb.
  • an electrical switchgear comprising at least one module as described above, and a drive mechanism of the rod of said module.
  • a switchgear device comprises a vacuum bulb 10 supported by a frame 12 and driven by a mechanism 13 of conventional type.
  • Two connection areas 14 and 16, fixed to the frame 12, are intended to electrically connect the equipment to a busbar (not shown).
  • a vacuum bulb designates a set of known type, comprising a cylindrical body 17 forming an enclosure 18 where there is a relative vacuum and which encloses a pair of separable contacts 22, 24.
  • the body 17 is itself - Even divided into a medial insulator section 19 of insulating material, a first metal end section constituting a first closure flange, and a second metal end section 21 constituting a second closure flange.
  • One of the contacts is a pellet 22 soldered at the end of a conducting cylinder 26 and constitutes with this cylinder a fixed contact member 28.
  • the cylinder 26 passes through the second flange 21 and is welded thereto.
  • the cylinder 26 is also welded to a rigid metal coil 29, it is welded to the connection pad 14.
  • the coil 29 is intended to induce, in the zone of separation of the contacts 22, 24, a magnetic field conducive to the breaking of an incipient electric arc between the contacts during their separation. Screws secure the turn 29 to the frame 12, and therefore the rigid attachment between the cylinder 26, itself secured to the body 17 of the bulb, and the frame 12. Moreover, and as will be explained later in detail, the first flange 20 is positioned and held relative to the frame 12 by means of a clamp 100 retained in a groove 130 of the frame.
  • the contact 24 is a pad brazed at the end of a movable contact member 30 whose body is constituted by a metal conductive rod 32, in this case a copper rod, passing through an orifice of the first flange 20.
  • This rod 32 extends outside the enclosure, as can be seen more clearly on the figure 5 , by a portion 36 of smaller diameter, thus defining an intermediate shoulder 38.
  • the end of the rod is provided with an axial threaded hole 39.
  • a sealing bellows 40 brazed on the rod 32 and on the inner wall of the first end portion, allows an axial translational movement of the movable member 30 relative to the fixed contact member 28, while preserving the vacuum in the chamber 18.
  • the rod 32 is connected to a lever 80 with two parallel arms 81, 82, via an insulating arm 42.
  • the insulating arm 42 comprises a plastic body 43 overmolding on the one hand the head of a first threaded rod 44, and secondly the head of a second threaded rod 45 located in the axial extension of the first.
  • the first threaded rod 44 is screwed into the threaded blind hole 39 located at the end of the rod 32 of the bulb.
  • On the second threaded rod 45 is screwed a tubular adjusting nut 46.
  • the nut supports at one end a support plate 47 for the end of a contact pressure spring 48.
  • the other end of the spring 48 bears on a second plate 49, which rests on a bar 83.
  • the bar 83 has a bore 84 forming a guide sleeve traversed by the tubular nut 46.
  • the bar 83 freely journalled in lateral axes 85 supported by the arms 81, 82 of the lever 80.
  • the guide sleeve 84 allows both the translation of the nut 46 parallel to its axis and its free rotation.
  • Nut 46 features a shoulder that rests on the portion of the bar 83 opposite the second plate 49.
  • the two arms 81, 82 of the lever 80 pivot about an axis 86 supported by the frame 12 and are actuated jointly at their free end by a mechanism closing and opening (not shown), this mechanism being intended to drive the movable contact member 30 between a contact position with the fixed contact member 28 and a separation position.
  • the lever 80 pivots counterclockwise about the axis 86 on the figure 2 , directly driving the bar 83, the nut 46, the arm 42 and the movable contact member 30.
  • the lever 80 pivots clockwise about the axis 86, causing the rod 83 which compresses the spring 48 via the plate 49.
  • the closing force is then transmitted by the spring 48 to the moving contact 30, via a transmission chain comprising the plate 47, the nut 46 and the insulating arm 42.
  • the electrical connection of the rod 32 to the busbar is provided by means of a flexible electrical connection 50, shown schematically on the figure 3 , one end 56 of which constitutes the connection pad 16, while the other end 58 is brazed to the body of the rod 32.
  • the flexible link 50 is constituted by a stack of metal blades 52, in this case blades of copper.
  • Each metal blade 52 has a curved medial portion 54 extended at each end by one of the end plane portions 56, 58.
  • the blades 52 have different lengths and shapes, so as to together form a stack having the desired curved shape at the end. the level of the middle portion 54.
  • the blades 52 are welded to each other by an atomic diffusion welding process, without adding material, so that each end forms a rigid one-piece portion. In their middle portion 54, the blades 52 remain separated from each other, which gives good overall flexibility to the electrical connection 50 thus formed.
  • the end portion 56 constituting the connection area comprises fixing means 60, in this case threaded holes opening, allowing its attachment to the frame of the apparatus, and connection means 62, in this case other tapped holes, allowing its connection to a busbar.
  • the other end portion 58 has a bore 64 corresponding to the diameter of the axis of the rod 36.
  • the collar 100 is made of plastic, in this case a polyamide 6-6, and comprises two parts 101, 102 hinged together by a hinge 103, so as to take an open position of mounting shown on the figure 4 , as well as a closed position represented on the figure 2 , in which elastic hooks 104 are stuck in corresponding slots 106.
  • the closed collar forms a flange having a flat bottom 107 and a peripheral cylindrical wall 108, for fitting therein the end of the first flange 20 of the bulb 10.
  • the central part of the flat bottom has a light 120 allowing the passage of the rod 32 of the bulb. This light, of generally cylindrical shape, guides the rod 32.
  • the collar 100 is provided with two main lateral rails 109, connected to the flat bottom 107 by two lateral lugs 110, and two auxiliary lateral rails 112 connected to the flat bottom 107. by two other lateral lugs 114.
  • Each auxiliary rail 112 is in the extension of one of the main rails 109.
  • Each main rail 109 forms in a front portion a stop 116 in recess, and in a rear portion an elastic clip 118.
  • the insulating portion 19 of the body 17 of the bulb is covered with an insulating sleeve 90 ( figure 2 ) equipped with vanes to lengthen the creepage distance between the live metal parts of the equipment.
  • the sleeve 90 widens in its upper part and forms a lip 92 which covers a portion of the turn 29, so as to lengthen the distance between the metal parts under tension.
  • An intermediate bead 94 whose internal surface is covered with a semiconductor paint, smooths the field lines in the vicinity of the edges of the turn 29.
  • the plastic body 43 of the insulating arm 42 forms a cylindrical skirt which protects the spring 48 and the threaded rod 45 and which thus ensures the electrical insulation between the rod 32 and the flexible connection 50 on the one hand, and the d 'somewhere else.
  • the mounting of the bulb 10 in the frame 12 is as follows.
  • the cylinder 26 is welded to the subassembly constituted by the turn 29 and the 14.
  • the insulating sleeve 90 is then force-fitted on the body 17 of the bulb and on the coil 29.
  • the bulb 10 must then be equipped with its electrical connection 50.
  • the axis 36 of the rod 32 is inserted into the bore 64, with the interposition of a washer of the metallic filler compound 68, according to the exploded diagram of FIG. figure 3 .
  • the filler metal compound should have a relatively low melting temperature, preferably less than 700 ° C, so as not to damage the internal solders of the ampoule. In this case, it is in this example a compound of 56% silver, 22% copper, 17% zinc and 5% tin, whose melting point is of the order of 650 ° C.
  • a heat source 70 shown schematically on the figure 5 at the free end of the bore, until the washer 68 is merged and axial capillary infiltration of a part of the metallic feed compound into the cylindrical space at the interface between the bore and the axis.
  • the initial clearance between the parts namely between the bore and the axis, must be appropriately chosen firstly to promote, during brazing, the wetting of the surfaces to be assembled. and on the other hand to ensure the mechanical strength of the brazed joint in the subsequent conditions of use.
  • the brazed joint 72 obtained reveals on the one hand a cylindrical interface zone 74 between the axis and the bore, and on the other hand an annular interface zone 76 between the upper rim of the bore 64 and the shoulder 38 of the rod.
  • the rod 32 is inserted radially into the collar 100 open, then the collar 100 is closed so as to encircle the end of the first flange 20 of the body 17 of the bulb and the rod 32, the elastic hooks 104 being stitched in corresponding lights 106.
  • the assembly thus formed is then introduced laterally into the frame 12, the rails 109 being introduced into the lateral grooves 130, and forming with the latter a sliding guide.
  • the collar then forms a slide that slides in the grooves 130 until the stops 116 meet corresponding surfaces of the frame, the staples 118 then being closed on corresponding bearing surfaces 132 of the frame. It then remains to screw to the frame 12 the connection pads 14, 16 and the coil 29, to screw the insulating arm in the threaded hole of the rod and to adjust the contact pressure with the adjusting nut .
  • the subset thus formed forms a module that can be assembled and tested in the factory, before storing it independently of the mechanism 13.
  • the final assembly of the equipment can be deferred.
  • the modules make it possible to constitute apparatus different from each other by the number of poles arranged side by side.
  • the slide guide can be reversed so that rails formed on the frame cooperate with grooves formed at the periphery of the collar.
  • the fastening mode with elastic staples can be replaced by any other suitable method of attachment.
  • the hinge can be omitted, so that the collar consists of two parts completely separated from each other in the open position. Other modifications are possible. For example, the sleeve may be omitted if the applied voltage permits.
  • the transmission lever can be arranged so that its pivot is between the free end moved by the mechanism and the bar.
  • the apparatus may be monopolar or multipolar.
  • the frame can be common to the different poles arranged side by side.
  • the mechanism can be of any known type for driving the lever 80: electromagnet, pole shaft mechanism.
  • the switchgear can be of any type, for example: switch, circuit breaker, with or without sectioning characteristics.
  • the vacuum bulb may comprise two movable contact members.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Switches (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

L'invention se rapporte à un module pour un appareillage électrique de coupure, comportant une ampoule à vide et des moyens de fixation de l'ampoule à un bâti de support. Elle se rapporte également à un appareillage comportant au moins un tel module.The invention relates to a module for electrical switchgear, comprising a vacuum bulb and means for fixing the bulb to a support frame. It also relates to an apparatus comprising at least one such module.

Classiquement, une ampoule à vide comporte un corps formant une enceinte étanche et renfermant une paire de contacts séparable, avec au moins un contact mobile. Le contact mobile est solidaire d'une tige métallique mobile en translation parallèlement à son axe et faisant saillie à une première extrémité axiale de l'ampoule. Une étanchéité est réalisée entre la tige et une paroi de l'enceinte, par l'intermédiaire d'un soufflet permettant le mouvement de translation de la tige. Cette tige est destinée à être reliée à un mécanisme d'entraînement de l'ampoule. L'autre contact est en général un contact fixe solidaire d'une tige fixe qui traverse le corps de l'ampoule, de manière à être accessible depuis l'extérieur à une deuxième extrémité axiale de l'ampoule, opposée à la première. La tige mobile est guidée dans son mouvement axial par rapport à l'ampoule grâce à un manchon de guidage faisant partie intégrante du corps de l'ampoule et faisant saillie vers l'intérieur de l'ampoule. Divers exemples de réalisation de cette architecture sont illustrés dans les documents DE 24 40 827 , US-A-4 403 124 , US 4 933 518 , US 4 983 793 , US 5 004 877 et US 5 168 139 .Conventionally, a vacuum interrupter comprises a body forming a sealed enclosure and enclosing a pair of separable contacts, with at least one movable contact. The movable contact is secured to a metal rod movable in translation parallel to its axis and projecting at a first axial end of the bulb. A seal is made between the rod and a wall of the enclosure, by means of a bellows allowing the translational movement of the rod. This rod is intended to be connected to a drive mechanism of the bulb. The other contact is in general a fixed contact secured to a fixed rod which passes through the body of the bulb, so as to be accessible from the outside to a second axial end of the bulb, opposite to the first. The movable rod is guided in its axial movement relative to the bulb through a guide sleeve integral with the body of the bulb and projecting inwardly of the bulb. Various examples of realization of this architecture are illustrated in the documents DE 24 40 827 , US-A-4,403,124 , US 4,933,518 , US 4,983,793 , US 5,004,877 and US 5,168,139 .

Dans le document EP 0 058 519 est décrit un appareillage électrique de coupure triphasé, dont chaque phase comporte une ampoule à vide du type décrit précédemment, supportée par un bâti rigide en matériau isolant. Du côté de la première extrémité axiale, le corps de l'ampoule est fixé au bâti par l'intermédiaire d'une plaque support munie d'un alésage au diamètre de la première extrémité axiale, et formant un siège pour le corps de l'ampoule. Du côté de la deuxième extrémité axiale, le corps de l'ampoule est fixé au bâti par l'intermédiaire d'un écrou de fixation de la tige fixe à une plage de raccordement électrique solidaire du bâti. Il n'y a pas d'interaction entre la plaque de support et la tige.In the document EP 0 058 519 is described a three-phase electrical switchgear, each phase comprises a vacuum bulb of the type described above, supported by a rigid frame of insulating material. On the side of the first axial end, the body of the bulb is fixed to the frame by means of a support plate provided with a bore with the diameter of the first axial end, and forming a seat for the body of the bulb. On the side of the second axial end, the body of the bulb is fixed to the frame by means of a fixed rod fixing nut to an electrical connection range secured to the frame. There is no interaction between the support plate and the rod.

A l'extrémité libre de la tige est fixée par frettage une liaison électrique flexible. Lors du montage de l'appareil, l'opération de frettage de la liaison a nécessairement lieu après que l'ampoule a été montée sur la plaque support, puisque la liaison frettée est trop volumineuse pour passer au travers de l'alésage de la plaque support. Par ailleurs, le positionnement de l'ampoule sur son bâti doit être effectué avec précision, de manière à ne pas solliciter la tige du contact mobile hors de son axe de translation déterminé par le manchon de guidage interne à l'ampoule. Ces points se révèlent désavantageux lors de l'industrialisation de l'appareillage.At the free end of the rod is fixed by hooping a flexible electrical connection. When mounting the device, the bonding operation of the bonding necessarily takes place after the bulb has been mounted on the support plate, since the bonded connection is too large to pass through the bore of the plate support. Furthermore, the positioning of the bulb on its frame must be performed accurately, so as not to solicit the rod of the movable contact out of its axis of translation determined by the inner guide sleeve to the bulb. These points prove disadvantageous during the industrialization of the equipment.

Un objectif de l'invention est de faciliter le montage d'un appareillage électrique de coupure à ampoule à vide, et notamment du module de coupure constitué par l'ampoule et son bâti de support.An object of the invention is to facilitate the assembly of electrical switchgear vacuum interrupter, including the break module constituted by the bulb and its support frame.

A cet effet, l'invention a pour objet un module de coupure pour appareillage électrique de coupure, comportant

  • au moins une ampoule à vide comportant un corps formant une enceinte renfermant une paire de contacts séparables, un desdits contacts étant solidaire d'une tige métallique mobile, une partie de la tige faisant saillie hors de l'enceinte à une première extrémité axiale du corps de l'ampoule ;
  • un bâti de support de l'ampoule ;
  • caractérisé en ce qu'il comporte en outre un collier de fixation et de guidage comportant :
    • une lumière formant un fourreau axial de guidage de la tige de l'ampoule, assurant un guidage en translation de la tige par rapport au collier suivant un axe géométrique de la lumière ; et
    • des surfaces de positionnement radial coopérant avec le corps de l'ampoule et interdisant tout mouvement radial du corps de l'ampoule par rapport à l'axe géométrique de la lumière du collier ;
    • des moyens de fixation au bâti de support de l'ampoule.
For this purpose, the subject of the invention is a breaking module for electrical switchgear, comprising
  • at least one vacuum interrupter comprising a body forming an enclosure enclosing a pair of separable contacts, one of said contacts being integral with a movable metal rod, a portion of the rod projecting from the enclosure at a first axial end of the body of the bulb;
  • a support frame of the bulb;
  • characterized in that it further comprises a fastening and guiding collar comprising:
    • a light forming an axial guide sleeve of the stem of the bulb, providing guidance in translation of the rod relative to the collar along a geometric axis of the light; and
    • radial positioning surfaces cooperating with the bulb body and preventing any radial movement of the bulb body relative to the geometric axis of the collar lumen;
    • fastening means to the support frame of the bulb.

Le collier permet à la fois le guidage de la tige par rapport à l'ampoule et la fixation de l'ampoule par rapport au bâti. La chaîne de cotes s'en trouve réduite, d'où une plus grande précision de guidage, assurée à faible coût.The collar allows both the guiding of the rod relative to the bulb and the fixing of the bulb relative to the frame. The chain of dimensions is reduced, resulting in greater guiding accuracy, provided at low cost.

Avantageusement, le bâti est muni de glissières de guidage et le collier est conformé en tiroir de manière à coulisser dans lesdites glissières de guidage, suivant une direction perpendiculaire à l'axe géométrique de la lumière. Il est alors possible d'assembler l'ampoule et son collier, avant d'insérer l'ensemble dans le bâti, en faisant coulisser le collier dans les glissières. Selon un mode de réalisation, les moyens de fixation comportent des agrafes élastiques formant une fixation par clips. Ce mode de fixation par agrafes rend le montage particulièrement simple. Les agrafes sont préférentiellement situées sur le collier, et coopèrent avec des appuis situés sur le bâti.Advantageously, the frame is provided with guide rails and the collar is slidably shaped so as to slide in said guide rails, in a direction perpendicular to the geometric axis of the light. It is then possible to assemble the bulb and its collar, before inserting the assembly in the frame, by sliding the collar in the slides. According to one embodiment, the fastening means comprise elastic clips forming a fastening by clips. This fastening mode by staples makes mounting particularly simple. The staples are preferably located on the collar, and cooperate with supports located on the frame.

Préférentiellement, le collier est composé de deux pièces aptes à prendre l'une par rapport à l'autre une position ouverte permettant l'insertion radiale de la tige de l'ampoule et une position fermée assurant la coopération des surfaces de positionnement radial avec le corps de l'ampoule, et de la lumière avec la tige. Cette disposition particulièrement avantageuse permet d'effectuer le montage du conducteur flexible sur la tige de l'ampoule avant de monter le collier pour fixer l'ampoule dans son bâti. Selon un mode de réalisation préférentiel, les deux pièces du collier sont articulées l'une à l'autre par une charnière. Les deux pièces du collier en position fermée sont fixées l'une à l'autre par des moyens de fixation. Ces dispositions facilitent l'assemblage.Preferably, the collar is composed of two parts able to take one relative to the other an open position allowing the radial insertion of the stem of the bulb and a closed position ensuring the cooperation of the radial positioning surfaces with the body of the bulb, and light with the stem. This particularly advantageous arrangement makes it possible to mount the flexible conductor on the stem of the bulb before mounting the collar to fix the bulb in its frame. According to a preferred embodiment, the two parts of the collar are hinged to each other by a hinge. The two parts of the collar in the closed position are fixed to one another by fixing means. These arrangements facilitate assembly.

Préférentiellement, le collier est muni de surface de positionnement axial constituant un siège pour un tronçon d'extrémité axiale du corps de l'ampoule. Le positionnement du collier s'en trouve simplifié.Preferably, the collar is provided with axial positioning surface constituting a seat for an axial end portion of the body of the bulb. The positioning of the collar is simplified.

Selon un mode de réalisation, le collier est en matière plastique. Il peut s'agir par exemple d'un polyamide 6-6.According to one embodiment, the collar is made of plastic. It may be for example a polyamide 6-6.

Préférentiellement, le module comporte une seule ampoule à vide.Preferably, the module comprises a single vacuum bulb.

Selon un autre aspect de l'invention, celle-ci a également pour objet un appareillage électrique de coupure comportant au moins un module tel que décrit précédemment, et un mécanisme d'entraînement de la tige dudit module.According to another aspect of the invention, it also relates to an electrical switchgear comprising at least one module as described above, and a drive mechanism of the rod of said module.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode particulier de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté aux dessins annexés sur lesquels :

  • la figure 1 représente une vue en perspective d'un appareillage selon l'invention, comportant une ampoule à vide installée dans un bâti support ;
  • la figure 2 représente une vue en coupe axiale de l'appareillage de la figure 1 ;
  • la figure 3 représente une liaison électrique souple permettant une liaison électrique entre l'ampoule et une plage de raccordement ;
  • la figure 4 représente une vue éclatée d'une partie de l'appareillage avant son assemblage ;
  • la figure 5 représente schématiquement une opération de brasage réalisant une jonction entre une tige de l'ampoule et la liaison électrique flexible.
Other advantages and features will emerge more clearly from the following description of a particular embodiment of the invention, given by way of non-limiting example, and represented in the accompanying drawings in which:
  • the figure 1 represents a perspective view of an apparatus according to the invention, comprising a vacuum interrupter installed in a support frame;
  • the figure 2 represents an axial sectional view of the apparatus of the figure 1 ;
  • the figure 3 represents a flexible electrical connection allowing an electrical connection between the bulb and a connection pad;
  • the figure 4 represents an exploded view of part of the apparatus before assembly;
  • the figure 5 schematically represents a brazing operation forming a junction between a rod of the bulb and the flexible electrical connection.

En référence aux figures 1 et 2, un appareillage de coupure comporte une ampoule à vide 10 supportée par un bâti 12 et entraînée par un mécanisme 13 de type conventionnel. Deux plages de raccordement 14 et 16, fixées au bâti 12, sont destinées à raccorder électriquement l'appareillage à un jeu de barres (non représenté).With reference to figures 1 and 2 , a switchgear device comprises a vacuum bulb 10 supported by a frame 12 and driven by a mechanism 13 of conventional type. Two connection areas 14 and 16, fixed to the frame 12, are intended to electrically connect the equipment to a busbar (not shown).

On désigne ici par l'expression générique d'ampoule à vide un ensemble de type connu, comportant un corps cylindrique 17 formant une enceinte 18 où règne un vide relatif et qui renferme une paire de contacts séparables 22, 24. Le corps 17 est lui-même divisé en un tronçon isolateur médian 19 en matériau isolant, un premier tronçon d'extrémité 20 métallique constituant un premier flasque de fermeture, et un deuxième tronçon d'extrémité 21 métallique constituant un deuxième flasque de fermeture. L'un des contacts est une pastille 22 brasée à l'extrémité d'un cylindre conducteur 26 et constitue avec ce cylindre un organe de contact fixe 28. Le cylindre 26 traverse le deuxième flasque 21 et est soudé à celui-ci. Le cylindre 26 est également soudé sur une spire métallique rigide 29, elle-même soudée à la plage de raccordement 14. Ainsi est assuré une liaison électrique entre l'organe de contact fixe 28 et la plage de raccordement 14, par l'intermédiaire de la spire 29. La spire 29 est destinée à induire, dans la zone de séparation des contacts 22, 24, un champ magnétique propice à la coupure d'un arc électrique naissant entre les contacts lors de leur séparation. Des vis assurent la fixation de la spire 29 au bâti 12, et donc la fixation rigide entre le cylindre 26, lui-même solidaire du corps 17 de l'ampoule, et le bâti 12. Par ailleurs, et comme il sera expliqué plus loin en détails, le premier flasque 20 est positionné et maintenu par rapport au bâti 12 par l'intermédiaire d'un collier de fixation 100 retenu dans une rainure 130 du bâti.Here, the generic expression of a vacuum bulb designates a set of known type, comprising a cylindrical body 17 forming an enclosure 18 where there is a relative vacuum and which encloses a pair of separable contacts 22, 24. The body 17 is itself - Even divided into a medial insulator section 19 of insulating material, a first metal end section constituting a first closure flange, and a second metal end section 21 constituting a second closure flange. One of the contacts is a pellet 22 soldered at the end of a conducting cylinder 26 and constitutes with this cylinder a fixed contact member 28. The cylinder 26 passes through the second flange 21 and is welded thereto. The cylinder 26 is also welded to a rigid metal coil 29, it is welded to the connection pad 14. This ensures an electrical connection between the fixed contact member 28 and the connection pad 14, via the coil 29. The coil 29 is intended to induce, in the zone of separation of the contacts 22, 24, a magnetic field conducive to the breaking of an incipient electric arc between the contacts during their separation. Screws secure the turn 29 to the frame 12, and therefore the rigid attachment between the cylinder 26, itself secured to the body 17 of the bulb, and the frame 12. Moreover, and as will be explained later in detail, the first flange 20 is positioned and held relative to the frame 12 by means of a clamp 100 retained in a groove 130 of the frame.

Le contact 24 est une pastille brasée à l'extrémité d'un organe de contact mobile 30 dont le corps est constitué par une tige 32 conductrice métallique, en l'occurrence une tige de cuivre, traversant un orifice du premier flasque 20. Cette tige 32 se prolonge à l'extérieur de l'enceinte, comme on le voit plus nettement sur la figure 5, par une partie 36 de plus faible diamètre, définissant ainsi un épaulement intermédiaire 38. L'extrémité de la tige est munie d'un trou taraudé axial 39. Un soufflet d'étanchéité 40 brasé sur la tige 32 et sur la paroi interne du premier tronçon d'extrémité, permet un mouvement axial de translation de l'organe mobile 30 par rapport à l'organe de contact fixe 28, tout en préservant le vide régnant dans l'enceinte 18.The contact 24 is a pad brazed at the end of a movable contact member 30 whose body is constituted by a metal conductive rod 32, in this case a copper rod, passing through an orifice of the first flange 20. This rod 32 extends outside the enclosure, as can be seen more clearly on the figure 5 , by a portion 36 of smaller diameter, thus defining an intermediate shoulder 38. The end of the rod is provided with an axial threaded hole 39. A sealing bellows 40 brazed on the rod 32 and on the inner wall of the first end portion, allows an axial translational movement of the movable member 30 relative to the fixed contact member 28, while preserving the vacuum in the chamber 18.

La tige 32 est reliée à un levier 80 à deux bras parallèles 81, 82, par l'intermédiaire d'un bras isolant 42. Le bras isolant 42 comporte un corps en matière plastique 43 surmoulant d'une part la tête d'une première tige filetée 44, et d'autre part la tête d'une deuxième tige filetée 45 située dans le prolongement axial de la première. La première tige filetée 44 est vissée dans le trou borgne taraudé 39 situé à l'extrémité de la tige 32 de l'ampoule. Sur la deuxième tige filetée 45 est vissé un écrou tubulaire de réglage 46. L'écrou supporte à une extrémité une assiette de support 47 pour l'extrémité d'un ressort de pression de contact 48. L'autre extrémité du ressort 48 porte sur une deuxième assiette 49, qui repose sur un barreau 83. Le barreau 83 comporte un alésage 84 formant un fourreau de guidage traversé par l'écrou tubulaire 46. Le barreau 83 tourillonne librement dans des axes latéraux 85 supportés par les bras 81, 82 du levier 80. Le fourreau de guidage 84 autorise à la fois la translation de l'écrou 46 parallèlement à son axe et sa libre rotation. L'écrou 46 comporte un épaulement qui vient reposer sur la partie du barreau 83 opposée à la deuxième assiette 49. Les deux bras 81, 82 du levier 80 pivotent autour d'un axe 86 supporté par le bâti 12 et sont actionnés conjointement à leur extrémité libre par un mécanisme de fermeture et d'ouverture (non représenté), ce mécanisme étant destiné à entraîner l'organe de contact mobile 30 entre une position de contact avec l'organe de contact fixe 28 et une position de séparation. A l'ouverture, le levier 80 pivote dans le sens contraire des aiguilles d'une montre autour de l'axe 86 sur la figure 2, entraînant directement le barreau 83, l'écrou 46, le bras 42 et l'organe de contact mobile 30. A la fermeture, le levier 80 pivote dans le sens des aiguilles d'une montre autour de l'axe 86, entraînant le barreau 83 qui comprime le ressort 48 par l'intermédiaire de l'assiette 49. L'effort de fermeture est ensuite transmis par le ressort 48 au contact mobile 30, par l'intermédiaire d'une chaîne de transmission comportant l'assiette 47, l'écrou 46 et le bras isolant 42.The rod 32 is connected to a lever 80 with two parallel arms 81, 82, via an insulating arm 42. The insulating arm 42 comprises a plastic body 43 overmolding on the one hand the head of a first threaded rod 44, and secondly the head of a second threaded rod 45 located in the axial extension of the first. The first threaded rod 44 is screwed into the threaded blind hole 39 located at the end of the rod 32 of the bulb. On the second threaded rod 45 is screwed a tubular adjusting nut 46. The nut supports at one end a support plate 47 for the end of a contact pressure spring 48. The other end of the spring 48 bears on a second plate 49, which rests on a bar 83. The bar 83 has a bore 84 forming a guide sleeve traversed by the tubular nut 46. The bar 83 freely journalled in lateral axes 85 supported by the arms 81, 82 of the lever 80. The guide sleeve 84 allows both the translation of the nut 46 parallel to its axis and its free rotation. Nut 46 features a shoulder that rests on the portion of the bar 83 opposite the second plate 49. The two arms 81, 82 of the lever 80 pivot about an axis 86 supported by the frame 12 and are actuated jointly at their free end by a mechanism closing and opening (not shown), this mechanism being intended to drive the movable contact member 30 between a contact position with the fixed contact member 28 and a separation position. At the opening, the lever 80 pivots counterclockwise about the axis 86 on the figure 2 , directly driving the bar 83, the nut 46, the arm 42 and the movable contact member 30. At closure, the lever 80 pivots clockwise about the axis 86, causing the rod 83 which compresses the spring 48 via the plate 49. The closing force is then transmitted by the spring 48 to the moving contact 30, via a transmission chain comprising the plate 47, the nut 46 and the insulating arm 42.

Le raccordement électrique de la tige 32 au jeu de barres est assuré au moyen d'une liaison électrique flexible 50, représentée de manière schématique sur la figure 3, dont une extrémité 56 constitue la plage de raccordement 16, alors que l'autre extrémité 58 est brasée sur le corps de la tige 32. La liaison flexible 50, est constituée par un empilement de lames métalliques 52, en l'occurrence des lames de cuivre. Chaque lame métallique 52 comporte une partie médiane incurvée 54 prolongée à chaque extrémité par une des parties planes d'extrémité 56, 58. Les lames 52 ont des longueurs et des formes différentes, de manière à former ensemble un empilement ayant la forme incurvée souhaitée au niveau de la partie médiane 54. Au niveau des extrémités 56, 58, les lames 52 sont soudées les unes aux autres par un procédé de soudage par diffusion atomique, sans apport de matière, de sorte que chaque extrémité constitue une partie rigide monobloc. Dans leur partie médiane 54, les lames 52 restent séparées les unes des autres, ce qui confère une bonne flexibilité d'ensemble à la liaison électrique 50 ainsi constituée. Comme l'illustre la figure 4, la partie d'extrémité 56 constituant la plage de raccordement comporte des moyens de fixation 60, en l'occurrence des trous taraudés débouchant, permettant sa fixation au bâti de l'appareillage, et des moyens de raccordement 62, en l'occurrence d'autres trous taraudés, permettant son raccordement à un jeu de barres. L'autre partie d'extrémité 58 comporte un alésage 64 correspondant au diamètre de l'axe de la tige 36.The electrical connection of the rod 32 to the busbar is provided by means of a flexible electrical connection 50, shown schematically on the figure 3 , one end 56 of which constitutes the connection pad 16, while the other end 58 is brazed to the body of the rod 32. The flexible link 50 is constituted by a stack of metal blades 52, in this case blades of copper. Each metal blade 52 has a curved medial portion 54 extended at each end by one of the end plane portions 56, 58. The blades 52 have different lengths and shapes, so as to together form a stack having the desired curved shape at the end. the level of the middle portion 54. At the ends 56, 58, the blades 52 are welded to each other by an atomic diffusion welding process, without adding material, so that each end forms a rigid one-piece portion. In their middle portion 54, the blades 52 remain separated from each other, which gives good overall flexibility to the electrical connection 50 thus formed. As illustrated by figure 4 , the end portion 56 constituting the connection area comprises fixing means 60, in this case threaded holes opening, allowing its attachment to the frame of the apparatus, and connection means 62, in this case other tapped holes, allowing its connection to a busbar. The other end portion 58 has a bore 64 corresponding to the diameter of the axis of the rod 36.

Le collier 100, visible en détails sur la figure 4, est constitué en matière plastique, en l'occurrence un polyamide 6-6, et comprend deux parties 101, 102 articulées entre elles par une charnière 103, de manière à pouvoir prendre une position ouverte de montage représentée sur la figure 4, ainsi qu'une position fermée représentée sur la figure 2, dans laquelle des crochets élastiques 104 viennent s'agrafer dans des lumières 106 correspondantes. Le collier fermé forme un flasque ayant un fond plat 107 et une paroi cylindrique périphérique 108, permettant d'y emboîter l'extrémité du premier flasque 20 de l'ampoule 10. La partie centrale du fond plat comporte une lumière 120 permettant le passage de la tige 32 de l'ampoule. Cette lumière, de forme générale cylindrique, assure le guidage de la tige 32. Le collier 100 est muni de deux rails latéraux principaux 109, raccordés au fond plat 107 par deux pattes latérales 110, et deux rails latéraux auxiliaires 112 raccordés au fond plat 107 par deux autres pattes latérales 114. Chaque rail auxiliaire 112 se trouve dans le prolongement d'un des rails principaux 109. Chaque rail principal 109 forme dans une partie frontale une butée 116 en décrochement, et dans une partie arrière une agrafe élastique 118.The collar 100, visible in detail on the figure 4 , is made of plastic, in this case a polyamide 6-6, and comprises two parts 101, 102 hinged together by a hinge 103, so as to take an open position of mounting shown on the figure 4 , as well as a closed position represented on the figure 2 , in which elastic hooks 104 are stuck in corresponding slots 106. The closed collar forms a flange having a flat bottom 107 and a peripheral cylindrical wall 108, for fitting therein the end of the first flange 20 of the bulb 10. The central part of the flat bottom has a light 120 allowing the passage of the rod 32 of the bulb. This light, of generally cylindrical shape, guides the rod 32. The collar 100 is provided with two main lateral rails 109, connected to the flat bottom 107 by two lateral lugs 110, and two auxiliary lateral rails 112 connected to the flat bottom 107. by two other lateral lugs 114. Each auxiliary rail 112 is in the extension of one of the main rails 109. Each main rail 109 forms in a front portion a stop 116 in recess, and in a rear portion an elastic clip 118.

Le tronçon isolant 19 du corps 17 de l'ampoule est recouvert d'une manche isolante 90 (figure 2) munie d'ailettes destinées à allonger la ligne de fuite entre les parties métalliques sous tension de l'appareillage. La manche 90 s'élargit dans sa partie supérieure et forme une lèvre 92 qui recouvre une partie de la spire 29, de manière à allonger la distance entre les parties métalliques sous tension. Un bourrelet intermédiaire 94, dont la surface interne est recouverte d'une peinture semi-conductrice, permet de lisser les lignes de champ au voisinage des arêtes de la spire 29.The insulating portion 19 of the body 17 of the bulb is covered with an insulating sleeve 90 ( figure 2 ) equipped with vanes to lengthen the creepage distance between the live metal parts of the equipment. The sleeve 90 widens in its upper part and forms a lip 92 which covers a portion of the turn 29, so as to lengthen the distance between the metal parts under tension. An intermediate bead 94, whose internal surface is covered with a semiconductor paint, smooths the field lines in the vicinity of the edges of the turn 29.

Le corps en matière plastique 43 du bras isolant 42 forme une jupe cylindrique qui protège le ressort 48 et la tige filetée 45 et qui assure ainsi l'isolation électrique entre la tige 32 et la liaison flexible 50 d'une part, et le mécanisme d'autre part.The plastic body 43 of the insulating arm 42 forms a cylindrical skirt which protects the spring 48 and the threaded rod 45 and which thus ensures the electrical insulation between the rod 32 and the flexible connection 50 on the one hand, and the d 'somewhere else.

Le montage de l'ampoule 10 dans le bâti 12 se fait de la manière suivante. Dans une première étape, le cylindre 26 est soudé au sous-ensemble constitué par la spire 29 et la plage de raccordement 14. La manche isolante 90 est ensuite emmanchée en force sur le corps 17 de l'ampoule et sur la spire 29.The mounting of the bulb 10 in the frame 12 is as follows. In a first step, the cylinder 26 is welded to the subassembly constituted by the turn 29 and the 14. The insulating sleeve 90 is then force-fitted on the body 17 of the bulb and on the coil 29.

L'ampoule 10 doit ensuite être équipée de sa liaison électrique 50. L'axe 36 de la tige 32 est inséré dans l'alésage 64, avec interposition d'une rondelle de composé métallique d'apport 68, suivant le schéma éclaté de la figure 3. Le composé métallique d'apport doit avoir une température de fusion relativement basse, de préférence inférieure à 700°C, de manière à ne pas endommager les brasures internes de l'ampoule. En l'occurrence, il s'agit dans cet exemple d'un composé de 56% d'argent, 22% de cuivre, 17% de zinc et 5% d'étain, dont le point de fusion est de l'ordre de 650°C. On apporte une source de chaleur 70, représentée schématiquement sur la figure 5, à l'extrémité libre de l'alésage, jusqu'à obtenir fusion de la rondelle 68 et infiltration axiale par capillarité d'une partie du composé métallique d'apport dans l'espace cylindrique à l'interface entre l'alésage et le l'axe. De manière bien connue du spécialiste du brasage, le jeu initial entre les pièces, à savoir entre l'alésage et l'axe, doit être choisi de manière adéquate d'une part pour favoriser, lors du brasage, le mouillage des surfaces à assembler, et d'autre part pour assurer la résistance mécanique du joint brasé dans les conditions postérieures d'utilisation. Le joint brasé 72 obtenu révèle d'une part une zone d'interface cylindrique 74 entre l'axe et l'alésage, et d'autre part une zone d'interface annulaire 76 entre le rebord supérieur de l'alésage 64 et l'épaulement 38 de la tige.The bulb 10 must then be equipped with its electrical connection 50. The axis 36 of the rod 32 is inserted into the bore 64, with the interposition of a washer of the metallic filler compound 68, according to the exploded diagram of FIG. figure 3 . The filler metal compound should have a relatively low melting temperature, preferably less than 700 ° C, so as not to damage the internal solders of the ampoule. In this case, it is in this example a compound of 56% silver, 22% copper, 17% zinc and 5% tin, whose melting point is of the order of 650 ° C. A heat source 70, shown schematically on the figure 5 at the free end of the bore, until the washer 68 is merged and axial capillary infiltration of a part of the metallic feed compound into the cylindrical space at the interface between the bore and the axis. In a manner well known to the brazing specialist, the initial clearance between the parts, namely between the bore and the axis, must be appropriately chosen firstly to promote, during brazing, the wetting of the surfaces to be assembled. and on the other hand to ensure the mechanical strength of the brazed joint in the subsequent conditions of use. The brazed joint 72 obtained reveals on the one hand a cylindrical interface zone 74 between the axis and the bore, and on the other hand an annular interface zone 76 between the upper rim of the bore 64 and the shoulder 38 of the rod.

Cet assemblage étant effectué, la tige 32 est introduite radialement dans le collier 100 ouvert, puis le collier 100 est refermé de manière à cercler l'extrémité du premier flasque 20 du corps 17 de l'ampoule ainsi que la tige 32, les crochets élastiques 104 venant s'agrafer dans des lumières 106 correspondantes. L'ensemble ainsi constitué est ensuite introduit latéralement dans le bâti 12, les rails 109 étant introduits dans les rainures latérales 130, et formant avec ces dernières un guidage à glissière. Le collier forme alors un tiroir qui coulisse dans les rainures 130 jusqu'à ce que les butées 116 rencontrent des surfaces correspondantes du bâti, les agrafes 118 venant alors se refermer sur des surfaces d'appui 132 correspondantes du bâti. Il reste ensuite à visser au bâti 12 les plages de raccordement 14, 16 ainsi que la spire 29, à visser le bras isolant dans le trou taraudé de la tige et à régler la pression de contact à l'aide de l'écrou de réglage.This assembly being performed, the rod 32 is inserted radially into the collar 100 open, then the collar 100 is closed so as to encircle the end of the first flange 20 of the body 17 of the bulb and the rod 32, the elastic hooks 104 being stitched in corresponding lights 106. The assembly thus formed is then introduced laterally into the frame 12, the rails 109 being introduced into the lateral grooves 130, and forming with the latter a sliding guide. The collar then forms a slide that slides in the grooves 130 until the stops 116 meet corresponding surfaces of the frame, the staples 118 then being closed on corresponding bearing surfaces 132 of the frame. It then remains to screw to the frame 12 the connection pads 14, 16 and the coil 29, to screw the insulating arm in the threaded hole of the rod and to adjust the contact pressure with the adjusting nut .

En toute rigueur, le mouvement imprimé à la tige 32 de l'ampoule 10 par le levier 80 en l'absence de jeu entre les pièces mobiles ne serait pas parfaitement rectiligne par rapport au bâti 12. Toutefois, l'angle entre le levier 80 et la tige 32 est toujours très proche de l'angle droit, et la course de la tige 32 de l'ampoule entre sa position d'ouverture et sa position de fermeture ne dépasse pas quelques millimètres, ce qui correspond à un angle de rotation du levier 80 ne dépassant pas quelques degrés, de sorte qu'en l'absence de jeu, le débattement radial de la tige 32 serait de l'ordre du centième de sa course axiale. Dans le mode de réalisation décrit, ce débattement est absorbé par les jeux existants entre les divers éléments de la chaîne cinématique, notamment au niveau des tourillons 85 et de l'axe 86. Toutefois, si l'on souhaitait une course plus importante, il serait possible de guider le barreau 126 dans un oblong du levier 90, 92, 94.In all rigor, the movement printed at the rod 32 of the bulb 10 by the lever 80 in the absence of play between the moving parts would not be perfectly straight with respect to the frame 12. However, the angle between the lever 80 and the rod 32 is always very close to the right angle, and the stroke of the rod 32 of the bulb between its open position and its closed position does not exceed a few millimeters, which corresponds to an angle of rotation lever 80 not exceeding a few degrees, so that in the absence of play, the radial movement of the rod 32 would be of the order of one hundredth of its axial stroke. In the embodiment described, this clearance is absorbed by the existing gaps between the various elements of the driveline, in particular at the level of the journals 85 and the axle 86. However, if a larger stroke was desired, It would be possible to guide the bar 126 in an oblong of the lever 90, 92, 94.

Le sous-ensemble ainsi constitué forme un module qu'il est possible de monter et d'essayer en usine, avant de le stocker indépendamment du mécanisme 13. Le montage final de l'appareillage peut être différé. Les modules permettent de constituer des appareillages différant les uns des autres par le nombre de pôles disposés côte à côte.The subset thus formed forms a module that can be assembled and tested in the factory, before storing it independently of the mechanism 13. The final assembly of the equipment can be deferred. The modules make it possible to constitute apparatus different from each other by the number of poles arranged side by side.

Naturellement, diverses variations sont possibles.Naturally, various variations are possible.

Le guidage à glissière peut être inversé, de manière que des rails formés sur le bâti coopèrent avec des rainures formées à la périphérie du collier. Le mode de fixation par agrafes élastiques peut être remplacé par tout autre mode de fixation adéquat. La charnière peut être omise, de sorte que le collier soit constitué de deux parties complètement séparées l'une de l'autre en position ouverte. D'autres modifications sont possibles. Par exemple, la manche peut être omise si la tension appliquée le permet. Le levier de transmission peut être disposé de manière à ce que son pivot soit entre l'extrémité libre mue par le mécanisme et le barreau.The slide guide can be reversed so that rails formed on the frame cooperate with grooves formed at the periphery of the collar. The fastening mode with elastic staples can be replaced by any other suitable method of attachment. The hinge can be omitted, so that the collar consists of two parts completely separated from each other in the open position. Other modifications are possible. For example, the sleeve may be omitted if the applied voltage permits. The transmission lever can be arranged so that its pivot is between the free end moved by the mechanism and the bar.

Comme on l'a dit, l'appareillage peut être monopolaire ou multipolaire. Dans ce dernier cas, le bâti peut être commun aux différents pôles disposés côte à côte. Toutefois, il est avantageux de disposer des modules monopolaires ayant chacun un bâti indépendant, ce qui favorise une très grande modularité. Le mécanisme peut être de tout type connu permettant l'entraînement du levier 80 : électroaimant, mécanisme à arbre des pôles. L'appareillage de coupure peut être de tout type, par exemple : interrupteur, disjoncteur, avec ou sans caractéristiques de sectionnement. L'ampoule à vide peut comporter deux organes de contact mobiles.As has been said, the apparatus may be monopolar or multipolar. In the latter case, the frame can be common to the different poles arranged side by side. However, it is advantageous to have monopolar modules each having an independent frame, which promotes a very high degree of modularity. The mechanism can be of any known type for driving the lever 80: electromagnet, pole shaft mechanism. The switchgear can be of any type, for example: switch, circuit breaker, with or without sectioning characteristics. The vacuum bulb may comprise two movable contact members.

Claims (10)

  1. A breaking module for an electrical switchgear apparatus, comprising:
    - at least one vacuum cartridge (10) comprising a body (17) forming an enclosure (18) containing a pair of separable contacts (22, 24), one (24) of said contacts being securedly affixed to a movable metal rod (32), a part of the rod (32) protruding out from the enclosure at a first axial end of the body (17) of the cartridge (10);
    - a support frame (12) of the cartridge;
    characterized in that it further comprises a fixing and guiding collar (100) comprising:
    - an aperture (120) forming an axial guide sheath of the rod (32) of the cartridge, performing guiding of the rod (32) in translation with respect to the collar (100) according to a geometric axis of the aperture (120);
    - radial positioning surfaces (108) co-operating with the body (17) of the cartridge and preventing any radial movement of the body (17) of the cartridge with respect to the geometric axis of the aperture (120) of the collar (100);
    - means for fixing to the support frame of the cartridge.
  2. The breaking module according to claim 1, characterized in that
    - the frame (12) is provided with guiding slides (130);
    - the collar (100) is in the form of a slide-rack so as to slide in said guiding slides (130) in a direction perpendicular to the geometric axis of the aperture (120).
  3. The breaking module according to any one of the foregoing claims, characterized in that the means for fixing comprise elastic clips (118) forming a fixing means by clipping.
  4. The breaking module according to any one of the foregoing claims, characterized in that the collar (100) is composed of two parts (101, 102) able to take an open position with respect to one another enabling radial insertion of the rod (32) of the cartridge and a closed position wherein the radial positioning surfaces (108) cooperate with the body (17) of the cartridge and the aperture (120) co-operates with the rod (32).
  5. The breaking module according to claim 4, characterized in that the two parts (101, 102) of the collar are articulated on one another by a hinge (103).
  6. The breaking module according to claim 4, characterized in that the two parts (101, 102) of the collar (100) are secured to one another in the closed position by fixing means (104, 106).
  7. The breaking module according to any one of the foregoing claims, characterized in that the collar (100) is provided with axial positioning surfaces (107) forming a seat for a section of axial end (20) of the body (17) of the cartridge.
  8. The breaking module according to any one of the foregoing claims, characterized in that the collar (100) is made of plastic material.
  9. The breaking module according to any one of the foregoing claims, characterized in that it comprises a single vacuum cartridge (10).
  10. An electrical switchgear apparatus comprising at least one module according to one of the foregoing claims, and a drive mechanism (13) of the rod of said module.
EP01410018A 2000-03-31 2001-02-15 Load-breaking module with vacuum bottle and fixing means, and switchgear using such a module Expired - Lifetime EP1139367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004166A FR2807203B1 (en) 2000-03-31 2000-03-31 CUTTING MODULE COMPRISING A VACUUM BULB AND FIXING MEANS, AND ELECTRICAL CUTTING APPARATUS COMPRISING SUCH A MODULE
FR0004166 2000-03-31

Publications (2)

Publication Number Publication Date
EP1139367A1 EP1139367A1 (en) 2001-10-04
EP1139367B1 true EP1139367B1 (en) 2009-07-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01410018A Expired - Lifetime EP1139367B1 (en) 2000-03-31 2001-02-15 Load-breaking module with vacuum bottle and fixing means, and switchgear using such a module

Country Status (10)

Country Link
US (1) US6410874B2 (en)
EP (1) EP1139367B1 (en)
CN (1) CN1175449C (en)
BR (1) BR0101238A (en)
DE (1) DE60139098D1 (en)
EA (1) EA003568B1 (en)
FR (1) FR2807203B1 (en)
MY (1) MY117438A (en)
PL (1) PL197701B1 (en)
TW (1) TW512564B (en)

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WO2007016882A1 (en) 2005-08-10 2007-02-15 Siemens Aktiengesellschaft Holding apparatus with field control properties
JP2009505334A (en) 2005-08-10 2009-02-05 シーメンス アクチエンゲゼルシヤフト Switch electrode with support frame having locking means
JP4946920B2 (en) * 2008-03-03 2012-06-06 三菱電機株式会社 Vacuum switch
JP5340043B2 (en) * 2009-06-08 2013-11-13 三菱電機株式会社 Breaker
CN101894704B (en) * 2010-04-19 2013-06-19 宏秀电气有限公司 High-pressure vacuum breaker
US9070517B2 (en) * 2012-08-13 2015-06-30 Electro-Mechanical Corporation Vacuum interrupter and linear disconnect switch
US10290437B1 (en) * 2013-03-15 2019-05-14 Innovative Switchgear IP, LLC Interrupter spring guide assembly
DE102013216018B4 (en) * 2013-08-13 2021-06-02 Siemens Aktiengesellschaft Device for transmitting forces
FR3056823B1 (en) * 2016-09-23 2018-10-12 Schneider Electric Ind Sas SYSTEM FOR ACTUATING A VACUUM BULB
DE102017207039A1 (en) * 2017-04-26 2018-10-31 Siemens Aktiengesellschaft vacuum switch
US10714275B2 (en) * 2018-04-17 2020-07-14 Eaton Intelligent Power Limited Illuminated visible break
CA3137905A1 (en) * 2019-04-26 2020-10-29 G & W Electric Company Modular switchgear

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DE4419380C1 (en) * 1994-05-30 1995-10-19 Siemens Ag Circuit breaker module

Also Published As

Publication number Publication date
TW512564B (en) 2002-12-01
MY117438A (en) 2004-06-30
CN1175449C (en) 2004-11-10
PL197701B1 (en) 2008-04-30
PL346748A1 (en) 2001-10-08
BR0101238A (en) 2001-11-06
EA003568B1 (en) 2003-06-26
DE60139098D1 (en) 2009-08-13
FR2807203A1 (en) 2001-10-05
US6410874B2 (en) 2002-06-25
CN1319863A (en) 2001-10-31
EA200100307A3 (en) 2001-12-24
EA200100307A2 (en) 2001-10-22
EP1139367A1 (en) 2001-10-04
FR2807203B1 (en) 2002-05-24
US20010025829A1 (en) 2001-10-04

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