EP1120803A1 - Vacuum tube for circuit breaker, having a snap-on guide bearing - Google Patents

Vacuum tube for circuit breaker, having a snap-on guide bearing Download PDF

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Publication number
EP1120803A1
EP1120803A1 EP01400156A EP01400156A EP1120803A1 EP 1120803 A1 EP1120803 A1 EP 1120803A1 EP 01400156 A EP01400156 A EP 01400156A EP 01400156 A EP01400156 A EP 01400156A EP 1120803 A1 EP1120803 A1 EP 1120803A1
Authority
EP
European Patent Office
Prior art keywords
bushing
cover
tubular
flange
vacuum interrupter
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.)
Granted
Application number
EP01400156A
Other languages
German (de)
French (fr)
Other versions
EP1120803B2 (en
EP1120803B1 (en
Inventor
Edgar Spranz
Martin Schlaug
Said Attak
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.)
Grid Solutions SAS
Original Assignee
Alstom SA
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Publication date
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Application filed by Alstom SA filed Critical Alstom SA
Priority to DE60124601T priority Critical patent/DE60124601T3/en
Publication of EP1120803A1 publication Critical patent/EP1120803A1/en
Application granted granted Critical
Publication of EP1120803B1 publication Critical patent/EP1120803B1/en
Publication of EP1120803B2 publication Critical patent/EP1120803B2/en
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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
    • H01H33/662—Housings or protective screens
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66253—Details relating to the prevention of unwanted rotation of the contact rod in vacuum switch bellows

Definitions

  • the invention relates to a vacuum interrupter for a circuit breaker, having a metal end flange which is tightly crossed by a rod movable in axial translation.
  • the rod carries at one end a movable contact in the bulb, and is guided in translation by a guide bearing mounted on the metallic flange.
  • a vacuum interrupter is known from document FR-2683940, and is more particularly intended for a medium-voltage circuit breaker.
  • the sealed sliding of the rod through the flange bearing the bearing is obtained by means of a waterproof metal bellows arranged inside the bulb. This bellows has at one end a flange welded to the rod, the other end being welded to the flange by brazing.
  • the rod translation guide bearing is partly made by a plastic bushing which is immobilized in a complementary piece brazed to the flange of the vacuum interrupter.
  • a plastic bushing which is immobilized in a complementary piece brazed to the flange of the vacuum interrupter.
  • Mean for blocking the rotation of the rod are provided at the surface of the contact between the rod and the bushing, consisting for example of a groove longitudinal formed in the bore of the crossing and completed by a longitudinal rib formed on the rod.
  • the bushing is fixed on the part generally complementary by means of a plywood welded by point or screwed on this piece, or by crimping the piece.
  • the rod is guided by a tubular plastic bushing which is fixed to the flange of the vacuum interrupter by latching means consisting in particular of circular grooves made in the crossing, circular lips elastic being fixed on the flange and arranged to be inserted in the grooves.
  • latching means consisting in particular of circular grooves made in the crossing, circular lips elastic being fixed on the flange and arranged to be inserted in the grooves.
  • the assembly provides longitudinal maintenance of the crossing to avoid that it does not dislodge during the translation of the rod during a maneuver of the circuit breaker.
  • this construction can have drawbacks especially in terms of reliability. Indeed, even if they provide a certain longitudinal support, the latching means do not seem arranged to be able to withstand significant extraction forces.
  • latching means are not arranged to provide retention in crossing rotation. Furthermore, it is not intended that the rod be blocked in rotation in the crossing.
  • the object of the invention is to propose a new embodiment of a bulb vacuum for circuit breaker, with a guide bearing comprising a bushing in plastic material immobilized in an additional room by means which do not have the drawbacks indicated above.
  • the subject of the invention is a vacuum interrupter for circuit breaker, having a metal end flange which is crossed in leaktight manner by a rod movable in axial translation, said flange carrying a guide bearing in translation of the rod.
  • a vacuum interrupter for circuit breaker having a metal end flange which is crossed in leaktight manner by a rod movable in axial translation, said flange carrying a guide bearing in translation of the rod.
  • said means snap-fasteners include elastic tabs disposed on the outer periphery of said bushing to enter recesses or slots disposed on the inner tubular periphery of said cover, in that each elastic tab can brace against an edge of a lumen once the bushing is snapped into the cover so as to resist any effort extraction of the bushing, in that means are arranged to prevent the rotation of said rod in the bushing, and in that the cover has on its inner periphery bosses intended to be inserted in recesses of complementary shape
  • the metal cover is fixed attached against the flange on the outside of the ampoule and has lights accessible to trigger means intended to be inserted in said slots for pressing on the elastic tabs of the tubular bushing, so that said bushing can be removed for recycling.
  • the tubular crossing has a first tubular part surrounded by a second coaxial tubular part of shorter length, these two parts tubulars being integrally connected by a third coaxial tubular part shorter than the second tubular part, so as to provide a annular space between said first and second tubular parts.
  • Figure 1 is a schematic representation in longitudinal section a vacuum interrupter from a medium voltage circuit breaker.
  • Figure 2 is a perspective view of the bearing cover of the bulb to vacuum according to the invention.
  • Figure 3 is a perspective view of a preferred embodiment of the crossing the bearing of the vacuum interrupter according to the invention.
  • FIG. 4 is a schematic representation in longitudinal section and projection of the vacuum bulb bearing consisting of the elements shown in Figures 2 and 3, once this bearing installed on the bulb.
  • Figure 5 is a schematic perspective representation of another embodiment of crossing the bearing of the vacuum interrupter according to the invention.
  • the vacuum interrupter 1 of a circuit breaker comprises an insulating tubular casing 2, for example made of ceramic, which extends in the axial direction A and two metal end plates or flanges 3, 4.
  • the casing 2 is generally of cylindrical shape, in which case at least the flange 4 is a disc having a coaxial circular orifice.
  • the flange 3 is fixed a fixed rod not shown carrying a fixed contact.
  • the vacuum interrupter 1 has a movable contact 5 ′ carried by a metal rod 5 which slides in leaktight fashion through the orifice 11 of the flange 4 by means of a metal bellows 7 mounted inside the envelope 2.
  • the rod 5 is guided in translation in the axial direction A by a bearing 8 constituted by a tubular metal cover 9 and by a tubular passage 10 of insulating material which is intended to be inserted coaxially in the cover 9 and snapped into it.
  • a bearing 8 constituted by a tubular metal cover 9 and by a tubular passage 10 of insulating material which is intended to be inserted coaxially in the cover 9 and snapped into it.
  • the two elements 9 and 10 of the bearing are shown only in axial half-section.
  • the cover 9 as well as the bellows 7 are welded by furnace brazing to the flange 4 coaxially with the rod 5.
  • the bushing 10 is fitted into the rod 5 and snapped into the hood 9 by crossing the orifice of the flange 4.
  • the rod 5 can then slide inside the bushing 10 so as to move the movable contact 5 'in axial translation during an operation of the circuit breaker.
  • FIG. 2 shows in more detail the tubular metal cover 9.
  • This is made for example from a stamped sheet of small thickness and has one end forming an inner flange 9A.
  • the surface outside of this flange 9A is welded by furnace brazing on the flange 4 of the vacuum interrupter.
  • the cover 9 has on its inner cylindrical periphery in the vicinity of its other end, recesses in the form here of radial lights 9B, preferably distributed equidistantly and bosses 9C distributed between the lights 9B.
  • 9B lights can be made by punching, and the bosses 9C can be made by pushing back towards the inside of the hood.
  • 9B lights can also be replaced by grooves.
  • FIG. 3 shows in more detail the tubular insulating bushing 10.
  • This is preferably made of an injected plastic. It comprises a first cylindrical tubular part 10A whose outside diameter is adjusted with the inside diameter of the cover 9 and which is intended to be inserted coaxially inside the metal cover 9, as well as a second cylindrical tubular part 10B coaxial to part 10A, of smaller diameter and greater length. These two tubular parts are connected together by a third tubular part 10J in an area forming the base of the crossing. This tubular part 10J is shorter longitudinally than the first tubular part 10A, so as to provide an annular space 10L between the first and second parts.
  • Part 10B is intended to be inserted coaxially in the orifice 9D delimited by the flange 9A of the cover and in the orifice 11 formed in the flange 4 of the vacuum interrupter.
  • the shoulder 10C between the tubular parts 10A and 10B formed by the end of the cylindrical part 10A is intended to come to bear on the inner surface of the flange 9A of the cover 9 when the bushing is inserted in the cover.
  • the tubular part 10A has elastic tabs 10D on its cylindrical outer periphery, preferably distributed equidistantly.
  • Each tongue extends axially in alignment with the openings 9B of the cover and carries at its free end a lip which projects radially and which is intended to snap into a light 9B of the cover 9 when the bushing 10 is inserted coaxially in the cover 9.
  • This snap-fitting of the tabs 10D into the slots 9B thus ensures immobilization in the axial direction A of the passage 10 in the cover 9.
  • the snap-fitting of the tabs 10D into the slots 9B can be carried out without mechanical force on the cover 9 thanks to a chamfering of the lip of the tongues.
  • the bracing of the tabs makes it possible to withstand the significant extraction forces which can occur in extreme cases of operation of the circuit breaker comprising a vacuum interrupter according to the invention.
  • the bushing 10 it is essential in the invention that the bushing 10 be blocked in rotation relative to the flange 4 and therefore relative to the cover 9.
  • the tabs 10D alone do not allow them to resist a significant torque which would be exerted on the bushing 10 by the rod 5.
  • the tubular part 10A also has on its cylindrical outer periphery recesses 10 E which are distributed between the tongues 10D in alignment with the bosses 9C of the cover, so that the bosses 9C come to be embedded in the recesses 10 E when the bushing 10 is inserted in the cover 9.
  • the bosses 9C and the recesses 10 E are adjusted to prevent any possibility of relative rotation relative to the axis A of the bushing 10 in the cover 9, so as not to damage the metal bellows 7.
  • the tubular parts 10A and 10B of the bushing preferably form a single piece molded and the tubular part 10B has an internal bore 10F in which slides the rod 5.
  • the bore 10F has one or two flats 10G consisting of a wide longitudinal groove , with another deeper longitudinal groove 10H which serves as a ventilation channel as is already known. Or the flats 10G serve to prevent rotation of the rod 5 in the crossing.
  • Figure 4 are shown schematically in longitudinal section a flange 4 onto which a bearing is welded in a vacuum interrupter according to the invention.
  • the crossing 10 of the bearing is shown in partial projection.
  • the metal sealing bellows 7 has one end which ends in a tubular part which passes through the orifice 11 formed in the flange 4 as well as the opening of the cover 9 of the bearing.
  • the cover 9 and the bellows 7 are welded to the flange 4 by brazing in the oven, preferably in a single pass after the last vacuum brazing operation in the oven. Furthermore, during this single pass, the bellows 7 is advantageously welded to the inner edge of the orifice of the cover 9.
  • the end bellows 7 is inserted into the opening in the cover 9 to protrude below the inner flange of said cover. This makes it possible to visually verify that the bellows is well inserted in the orifice 11 of the flange 4, after the last brazing operation in the oven.
  • the annular space 10L of the crossing 10 is arranged so that the end of the bellows 7 can be housed in said space without pressing against the crossing 10 after the snap-fastening thereof.
  • Figure 5 is shown schematically in perspective another embodiment of the vacuum bulb bearing according to the invention, in view exploded with the end of the bulb on which this bearing is to be mounted.
  • Alone part of the rod 5 is shown, surrounded by the bellows 7.
  • the cover 9 of the landing is identical to that shown in Figure 2, while the crossing insulating tubular 10 differs somewhat in its shape from that shown in the Figure 3.
  • the first tubular part 10B of the crossing 10 is here joined against the second tubular part 10A coaxial and of shorter length.
  • the two parts 10A and 10B form preferably a single piece from molding, but the bushing 10 here presents a massive form.
  • the bearing in a vacuum interrupter according to the invention helps to reduce the time of mounting of the vacuum interrupter and therefore of a vacuum interrupter. This snap-in also avoids significant mechanical stresses on the bulb when mounting the insulating bushing, as well as when mounting of the device for operating the rod of the movable contact of the bulb.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Insulating Bodies (AREA)

Abstract

The mounted snap fit section forms the end section of a metallic tube. The snap fit section (10) has a sealed inserted sliding rod sliding in the section. The snap fit section has a female part mounted in the tube end and the male section with elastic protruding ends (10D) snapping into position. A groove (10G) prevents rod rotation, and there is an extra insertable section (10E) to assist rotation movement prevention.

Description

L'invention porte sur une ampoule à vide pour disjoncteur, ayant un flasque métallique d'extrémité qui est traversé de manière étanche par une tige mobile en translation axiale. La tige porte à une extrémité un contact mobile dans l'ampoule, et est guidée en translation par un palier de guidage monté sur le flasque métallique. Une telle ampoule à vide est connue du document FR-2683940, et est plus particulièrement destinée à un disjoncteur moyenne tension. Dans ce type d'ampoule à vide, le coulissement étanche de la tige à travers le flasque portant le palier est obtenu grâce à un soufflet métallique étanche disposé à l'intérieur de l'ampoule. Ce soufflet comporte à une extrémité une collerette soudée à la tige, l'autre extrémité étant soudée au flasque par brasage. Il est nécessaire de guider en translation la tige de façon très précise, et de prévoir des moyens de blocage en rotation de la tige par rapport au flasque afin de ne pas détériorer le soufflet métallique. En particulier, quand un élément fileté rapporté dans le taraudage situé à l'extrémité de la tige est serré, il est important que le couple de serrage exercé ne provoque pas la rotation de la tige.The invention relates to a vacuum interrupter for a circuit breaker, having a metal end flange which is tightly crossed by a rod movable in axial translation. The rod carries at one end a movable contact in the bulb, and is guided in translation by a guide bearing mounted on the metallic flange. Such a vacuum interrupter is known from document FR-2683940, and is more particularly intended for a medium-voltage circuit breaker. In this type of vacuum interrupter, the sealed sliding of the rod through the flange bearing the bearing is obtained by means of a waterproof metal bellows arranged inside the bulb. This bellows has at one end a flange welded to the rod, the other end being welded to the flange by brazing. It is necessary to guide the rod in translation very precisely, and to provide means for blocking the rotation of the rod relative to the flange so not to damage the metal bellows. In particular, when a threaded element reported in the thread located at the end of the rod is tight, it is important that the tightening torque exerted does not cause the rotation of the rod.

Dans des constructions d'ampoules à vide connues pour des disjoncteurs à moyenne tension, le palier de guidage en translation de la tige est réalisé en partie par une traversée en matière plastique qui est immobilisée dans une pièce complémentaire brasée sur le flasque de l'ampoule à vide. Des moyens de blocage en rotation de la tige sont prévus au niveau de la surface de contact entre la tige et la traversée, consistant par exemple en une cannelure longitudinale pratiquée dans l'alésage de la traversée et complétée par une nervure longitudinale ménagé sur la tige. La traversée est fixée sur la pièce complémentaire généralement par l'intermédiaire d'une contreplaque soudée par point ou vissée sur cette pièce, ou encore par un sertissage de la pièce. Ces techniques présentent toutes un inconvénient. Le soudage par point d'une contreplaque nécessite une pièce complémentaire suffisamment épaisse pour ne pas risquer de percer l'enveloppe de l'ampoule à vide lors du soudage. De la même façon, le vissage d'une contreplaque nécessite de réaliser des trous borgnes filetés dans la pièce complémentaire qui doit en conséquence avoir une forte épaisseur. Le sertissage de la pièce complémentaire met quant à lui en jeu des efforts mécaniques importants pouvant conduire à la détérioration de la brasure de la pièce complémentaire sur le flasque de l'ampoule à vide. In vacuum bulb constructions known for medium voltage circuit breakers, the rod translation guide bearing is partly made by a plastic bushing which is immobilized in a complementary piece brazed to the flange of the vacuum interrupter. Of means for blocking the rotation of the rod are provided at the surface of the contact between the rod and the bushing, consisting for example of a groove longitudinal formed in the bore of the crossing and completed by a longitudinal rib formed on the rod. The bushing is fixed on the part generally complementary by means of a plywood welded by point or screwed on this piece, or by crimping the piece. These techniques all have a drawback. Spot welding of a plywood requires an additional piece thick enough to not do not risk piercing the envelope of the vacuum bulb during welding. Of the same way, screwing a counterplate requires making holes blind threaded in the additional room which must therefore have a very thick. The crimping of the complementary piece brings into play significant mechanical forces which can lead to deterioration of the brazing of the complementary part on the flange of the vacuum interrupter.

Dans une autre construction connue du brevet DE 2440827, la tige est guidée par une traversée tubulaire en matière plastique qui est fixée au flasque de l'ampoule à vide par des moyens d'encliquetage consistant notamment en des rainures circulaires pratiquées dans la traversée, des lèvres circulaires élastiques étant fixées sur le flasque et agencées pour venir s'insérer dans les rainures. L'ensemble procure un maintien longitudinal de la traversée pour éviter que celle-ci ne se déboite pendant la translation de la tige lors d'une manoeuvre du disjoncteur. Toutefois, cette construction peut présenter des inconvénients notamment en terme de fiabilité. En effet, même s'ils procurent un certain maintien longitudinal, les moyens d'encliquetage ne semblent pas agencés pour pouvoir résister à des efforts d'extraction importants. Or, de tels efforts peuvent se produire dans des cas extrêmes de fonctionnement où un échauffement de l'ampoule à vide provoque une dilatation de la tige telle que les forces de frottement avec la traversée plastique deviennent importantes. D'autre part, ces moyens d'encliquetage ne sont pas agencés pour procurer un maintien en rotation de la traversée. Du reste, il n'est pas prévu que la tige soit bloquée en rotation dans la traversée.In another construction known from patent DE 2440827, the rod is guided by a tubular plastic bushing which is fixed to the flange of the vacuum interrupter by latching means consisting in particular of circular grooves made in the crossing, circular lips elastic being fixed on the flange and arranged to be inserted in the grooves. The assembly provides longitudinal maintenance of the crossing to avoid that it does not dislodge during the translation of the rod during a maneuver of the circuit breaker. However, this construction can have drawbacks especially in terms of reliability. Indeed, even if they provide a certain longitudinal support, the latching means do not seem arranged to be able to withstand significant extraction forces. However, such efforts can occur in extreme cases of operation where overheating of the vacuum interrupter causes expansion of the rod such that the forces of friction with the plastic bushing becomes significant. On the other hand, these latching means are not arranged to provide retention in crossing rotation. Furthermore, it is not intended that the rod be blocked in rotation in the crossing.

Le but de l'invention est de proposer une nouvelle réalisation d'ampoule à vide pour disjoncteur, avec un palier de guidage comprennant une traversée en matière plastique immobilisée dans une pièce complémentaire par des moyens d'encliquetage qui ne présentent pas les inconvénients indiqués ci-dessus.The object of the invention is to propose a new embodiment of a bulb vacuum for circuit breaker, with a guide bearing comprising a bushing in plastic material immobilized in an additional room by means which do not have the drawbacks indicated above.

A cet effet, l'invention a pour objet une ampoule à vide pour disjoncteur, ayant un flasque métallique d'extrémité qui est traversé de manière étanche par une tige mobile en translation axiale, ledit flasque portant un palier de guidage en translation de la tige constitué par un capot métallique fixé au flasque et par une traversée tubulaire en matière isolante dans laquelle ladite tige peut coulisser, ladite traversée comprennant des moyens d'encliquetage pour pouvoir être insérée et maintenue dans ledit capot de façon coaxiale, caractérisée en ce que lesdits moyens d'encliquetage comprennent des languettes élastiques disposées sur la périphérie extérieure de ladite traversée pour pénétrer dans des évidements ou lumières disposés sur la périphérie tubulaire intérieure dudit capot, en ce que chaque languette élastique peut s'arc-bouter contre un bord d'une lumière une fois la traversée encliquetée dans le capot de façon à résister à tout effort d'extraction de la traversée, en ce que des moyens sont agencés pour empêcher la rotation de ladite tige dans la traversée, et en ce que le capot comporte sur sa périphérie intérieure des bossages destinés à s'insérer dans des renfoncements de forme complémentaire ménagés sur la périphérie extérieure de la traversée afin d'empêcher tout mouvement de rotation de la traversée après l'encliquetage.
Avec cette fixation par encliquetage, on évite les risques de détérioration de l'ampoule à vide d'une part lors du montage du palier de guidage de la tige, d'autre part lors du serrage d'un élément fileté à l'extrémité de la tige extérieure à l'ampoule. En outre, cette construction contribue à réduire le temps de montage de l'ampoule à vide et donc le coût de réalisation d'un disjoncteur à ampoule à vide.
Dans un mode de réalisation préféré de l'ampoule à vide selon l'invention, le capot métallique est fixé accolé contre le flasque à l'extérieur de l'ampoule et présente des lumières accessibles à des moyens de décliquetage destinés à s'insérer dans lesdites lumières pour appuyer sur les languettes élastiques de la traversée tubulaire, afin de pouvoir retirer ladite traversée pour son recyclage.To this end, the subject of the invention is a vacuum interrupter for circuit breaker, having a metal end flange which is crossed in leaktight manner by a rod movable in axial translation, said flange carrying a guide bearing in translation of the rod. constituted by a metal cover fixed to the flange and by a tubular passage in insulating material in which said rod can slide, said passage comprising snap-fastening means so that it can be inserted and held in said cover coaxially, characterized in that said means snap-fasteners include elastic tabs disposed on the outer periphery of said bushing to enter recesses or slots disposed on the inner tubular periphery of said cover, in that each elastic tab can brace against an edge of a lumen once the bushing is snapped into the cover so as to resist any effort extraction of the bushing, in that means are arranged to prevent the rotation of said rod in the bushing, and in that the cover has on its inner periphery bosses intended to be inserted in recesses of complementary shape formed on the outer periphery of the bushing to prevent any rotational movement of the bushing after snap-fastening.
With this snap-fastening, the risk of deterioration of the vacuum interrupter is avoided on the one hand when mounting the rod guide bearing, on the other hand when tightening a threaded element at the end of the rod outside the bulb. In addition, this construction contributes to reducing the assembly time of the vacuum interrupter and therefore the cost of producing a vacuum interrupter.
In a preferred embodiment of the vacuum interrupter according to the invention, the metal cover is fixed attached against the flange on the outside of the ampoule and has lights accessible to trigger means intended to be inserted in said slots for pressing on the elastic tabs of the tubular bushing, so that said bushing can be removed for recycling.

Dans un autre mode de réalisation préféré de l'ampoule à vide selon l'invention, la traversée tubulaire présente une première partie tubulaire entourée par une seconde partie tubulaire coaxiale de moindre longueur, ces deux parties tubulaires étant solidairement reliées par une troisième partie tubulaire coaxiale de moindre longueur que la seconde partie tubulaire, de façon à ménager un espace annulaire entre lesdites première et seconde parties tubulaires.In another preferred embodiment of the vacuum interrupter according to the invention, the tubular crossing has a first tubular part surrounded by a second coaxial tubular part of shorter length, these two parts tubulars being integrally connected by a third coaxial tubular part shorter than the second tubular part, so as to provide a annular space between said first and second tubular parts.

D'autres caractéristiques et avantages de l'invention apparaítront encore à la lecture de la description qui suit d'un exemple de réalisation d'une ampoule à vide pour disjoncteur selon l'invention illustrée par les dessins.Other characteristics and advantages of the invention will also appear on reading the following description of an embodiment of a bulb vacuum for circuit breaker according to the invention illustrated by the drawings.

La figure 1 est une représentation schématique en coupe longitudinale d'une ampoule à vide d'un disjoncteur moyenne tension.Figure 1 is a schematic representation in longitudinal section a vacuum interrupter from a medium voltage circuit breaker.

La figure 2 est une vue en perspective du capot du palier de l'ampoule à vide selon l'invention.Figure 2 is a perspective view of the bearing cover of the bulb to vacuum according to the invention.

La figure 3 est une vue en perspective d'une réalisation préférée de la traversée du palier de l'ampoule à vide selon l'invention.Figure 3 is a perspective view of a preferred embodiment of the crossing the bearing of the vacuum interrupter according to the invention.

La figure 4 est une représentation schématique en coupe longitudinale et projection du palier de l'ampoule à vide constitué des éléments représentés aux figures 2 et 3, une fois ce palier installé sur l'ampoule. FIG. 4 is a schematic representation in longitudinal section and projection of the vacuum bulb bearing consisting of the elements shown in Figures 2 and 3, once this bearing installed on the bulb.

La figure 5 est une représentation schématique en perspective d'un autre mode de réalisation de la traversée du palier de l'ampoule à vide selon l'invention.Figure 5 is a schematic perspective representation of another embodiment of crossing the bearing of the vacuum interrupter according to the invention.

Sur la figure 1, l'ampoule à vide 1 d'un disjoncteur comprend une enveloppe tubulaire isolante 2, par exemple en céramique, qui s'étend suivant la direction axiale A et deux plaques métalliques d'extrémité ou flasques 3,4. L'enveloppe 2 est généralement de forme cylindrique, auquel cas au moins le flasque 4 est un disque présentant un orifice circulaire coaxial.
Au flasque 3 est fixée une tige fixe non représentée portant un contact fixe. L'ampoule à vide 1 comporte un contact mobile 5' porté par une tige métallique 5 qui coulisse de manière étanche à travers l'orifice 11 du flasque 4 grâce à un soufflet métallique 7 monté à l'intérieur de l'enveloppe 2. La tige 5 est guidée en translation suivant la direction axiale A par un palier 8 constitué par un capot métallique tubulaire 9 et par une traversée tubulaire 10 en matière isolante qui est destinée à être insérée coaxialement dans le capot 9 et encliquetée dans celui-ci. Sur la figure 1, les deux éléments 9 et 10 du palier sont montrés seulement en demi-coupe axiale. Le capot 9 ainsi que le soufflet 7 sont soudés par brasage au four au flasque 4 coaxialement à la tige 5. Ensuite, la traversée 10 est emmanchée dans la tige 5 et encliquetée dans le capot 9 en traversant l'orifice du flasque 4. La tige 5 peut alors coulisser à l'intérieur de la traversée 10 de façon à déplacer en translation axiale le contact mobile 5' lors d'une manoeuvre du disjoncteur.In FIG. 1, the vacuum interrupter 1 of a circuit breaker comprises an insulating tubular casing 2, for example made of ceramic, which extends in the axial direction A and two metal end plates or flanges 3, 4. The casing 2 is generally of cylindrical shape, in which case at least the flange 4 is a disc having a coaxial circular orifice.
The flange 3 is fixed a fixed rod not shown carrying a fixed contact. The vacuum interrupter 1 has a movable contact 5 ′ carried by a metal rod 5 which slides in leaktight fashion through the orifice 11 of the flange 4 by means of a metal bellows 7 mounted inside the envelope 2. The rod 5 is guided in translation in the axial direction A by a bearing 8 constituted by a tubular metal cover 9 and by a tubular passage 10 of insulating material which is intended to be inserted coaxially in the cover 9 and snapped into it. In Figure 1, the two elements 9 and 10 of the bearing are shown only in axial half-section. The cover 9 as well as the bellows 7 are welded by furnace brazing to the flange 4 coaxially with the rod 5. Then, the bushing 10 is fitted into the rod 5 and snapped into the hood 9 by crossing the orifice of the flange 4. The rod 5 can then slide inside the bushing 10 so as to move the movable contact 5 'in axial translation during an operation of the circuit breaker.

La figure 2 montre plus en détail le capot métallique tubulaire 9. Celui-ci est réalisé par exemple à partir d'une tôle emboutie de faible épaisseur et comporte une extrémité formant une collerette intérieure 9A. La surface extérieure de cette collerette 9A est soudée par brasage au four sur le flasque 4 de l'ampoule à vide. Le capot 9 présente sur sa périphérie intérieure cylindrique au voisinage de son autre extrémité, des évidements sous la forme ici de lumières radiales 9B, de préférence réparties de façon équidistante et des bossages 9C répartis entre les lumières 9B. Les lumières 9B peuvent être réalisées par poinçonnage, et les bossages 9C peuvent être réalisés par repoussage vers l'intérieur du capot. Les lumières 9B peuvent aussi être remplacées par des rainures.Figure 2 shows in more detail the tubular metal cover 9. This is made for example from a stamped sheet of small thickness and has one end forming an inner flange 9A. The surface outside of this flange 9A is welded by furnace brazing on the flange 4 of the vacuum interrupter. The cover 9 has on its inner cylindrical periphery in the vicinity of its other end, recesses in the form here of radial lights 9B, preferably distributed equidistantly and bosses 9C distributed between the lights 9B. 9B lights can be made by punching, and the bosses 9C can be made by pushing back towards the inside of the hood. 9B lights can also be replaced by grooves.

La figure 3 montre plus en détail la traversée isolante tubulaire 10. Celle-ci est réalisée de préférence en une matière plastique injectée. Elle comporte une première partie tubulaire cylindrique 10A dont le diamètre extérieur est ajusté avec le diamètre intérieur du capot 9 et qui est destinée à venir s'insérer coaxialement à l'intérieur du capot métallique 9, ainsi qu'une seconde partie tubulaire cylindrique 10B coaxiale à la partie 10A, de plus petit diamètre et de longueur supérieure. Ces deux parties tubulaires sont reliées entre elles par une troisième partie tubulaire 10J dans une zone formant la base de la traversée. Cette partie tubulaire 10J est plus courte longitudinalement que la première partie tubulaire 10A, de façon à ménager un espace annulaire 10L entre les premières et seconde parties. La partie 10B est destiné à s'insérer coaxialement dans l'orifice 9D délimité par la collerette 9A du capot et dans l'orifice 11 ménagé dans le flasque 4 de l'ampoule à vide. L'épaulement 10C entre les parties tubulaires 10A et 10B formé par l'extrémité de la partie cylindrique 10A est destiné à venir en appui sur la surface intérieure de la collerette 9A du capot 9 quand la traversée est insérée dans le capot.
La partie tubulaire 10A présente sur sa périphérie extérieure cylindrique des languettes élastiques 10D réparties de préférence de façon équidistante. Chaque languette s'étend axialement en alignement avec les lumières 9B du capot et porte à son extrémité libre une lèvre qui saille radialement et qui est destinée à venir s'encliqueter dans une lumière 9B du capot 9 quand la traversée 10 est insérée coaxialement dans le capot 9. Cet encliquetage des languettes 10D dans les lumières 9B assure ainsi l'immobilisation selon la direction axiale A de la traversée 10 dans le capot 9. L'encliquetage des languettes 10D dans les lumières 9B peut être réalisé sans effort mécanique sur le capot 9 grâce à un chanfreinage de la lèvre des languettes. Lorsque la lèvre d'une languette 10D est engagée dans une lumière 9B, la languette s'arc-boute contre un bord de la lumière pour résister à un effort d'extraction de la traversée 10 du capot 9. L'arc-boutement des languettes permet de résister aux efforts d'extraction importants qui peuvent se produire dans des cas extrêmes de fonctionnement du disjoncteur comportant une ampoule à vide selon l'invention. Comme expliqué précédemment, il est essentiel dans l'invention que la traversée 10 soit bloquée en rotation par rapport au flasque 4 et donc par rapport au capot 9. Or, les languettes 10D ne permettent pas à elles seules de résister à un couple important qui serait exercé sur la traversée 10 par la tige 5.
Afin de procurer un blocage en rotation efficace, la partie tubulaire 10A comporte également sur sa périphérie extérieure cylindrique des renfoncements 10 E qui sont répartis entre les languettes 10D en alignement avec les bossages 9C du capot, de sorte que les bossages 9C viennent s'encastrer dans les renfoncements 10 E quand la traversée 10 est insérée dans le capot 9. Les bossages 9C et les renfoncements 10 E sont ajustés pour empêcher toute possibilité de rotation relative par rapport à l'axe A de la traversée 10 dans le capot 9, de façon à ne pas détériorer le soufflet métallique 7.
Les parties tubulaires 10A et 10B de la traversée forment préférablement une seule pièce venue de moulage et la partie tubulaire 10B comporte un alésage intérieur 10F dans lequel coulisse la tige 5. L'alésage 10F présente un ou deux méplats 10G consistant en une large rainure longitudinale, avec une autre rainure longitudinale 10H plus profonde qui sert de canal de ventilation comme cela est déjà connu. Le ou les méplats 10G servent à éviter une rotation de la tige 5 dans la traversée.Figure 3 shows in more detail the tubular insulating bushing 10. This is preferably made of an injected plastic. It comprises a first cylindrical tubular part 10A whose outside diameter is adjusted with the inside diameter of the cover 9 and which is intended to be inserted coaxially inside the metal cover 9, as well as a second cylindrical tubular part 10B coaxial to part 10A, of smaller diameter and greater length. These two tubular parts are connected together by a third tubular part 10J in an area forming the base of the crossing. This tubular part 10J is shorter longitudinally than the first tubular part 10A, so as to provide an annular space 10L between the first and second parts. Part 10B is intended to be inserted coaxially in the orifice 9D delimited by the flange 9A of the cover and in the orifice 11 formed in the flange 4 of the vacuum interrupter. The shoulder 10C between the tubular parts 10A and 10B formed by the end of the cylindrical part 10A is intended to come to bear on the inner surface of the flange 9A of the cover 9 when the bushing is inserted in the cover.
The tubular part 10A has elastic tabs 10D on its cylindrical outer periphery, preferably distributed equidistantly. Each tongue extends axially in alignment with the openings 9B of the cover and carries at its free end a lip which projects radially and which is intended to snap into a light 9B of the cover 9 when the bushing 10 is inserted coaxially in the cover 9. This snap-fitting of the tabs 10D into the slots 9B thus ensures immobilization in the axial direction A of the passage 10 in the cover 9. The snap-fitting of the tabs 10D into the slots 9B can be carried out without mechanical force on the cover 9 thanks to a chamfering of the lip of the tongues. When the lip of a tongue 10D is engaged in a lumen 9B, the tongue is braced against an edge of the lumen to resist an extraction force from the passage 10 of the cover 9. The bracing of the tabs makes it possible to withstand the significant extraction forces which can occur in extreme cases of operation of the circuit breaker comprising a vacuum interrupter according to the invention. As explained above, it is essential in the invention that the bushing 10 be blocked in rotation relative to the flange 4 and therefore relative to the cover 9. However, the tabs 10D alone do not allow them to resist a significant torque which would be exerted on the bushing 10 by the rod 5.
In order to provide an effective rotation lock, the tubular part 10A also has on its cylindrical outer periphery recesses 10 E which are distributed between the tongues 10D in alignment with the bosses 9C of the cover, so that the bosses 9C come to be embedded in the recesses 10 E when the bushing 10 is inserted in the cover 9. The bosses 9C and the recesses 10 E are adjusted to prevent any possibility of relative rotation relative to the axis A of the bushing 10 in the cover 9, so as not to damage the metal bellows 7.
The tubular parts 10A and 10B of the bushing preferably form a single piece molded and the tubular part 10B has an internal bore 10F in which slides the rod 5. The bore 10F has one or two flats 10G consisting of a wide longitudinal groove , with another deeper longitudinal groove 10H which serves as a ventilation channel as is already known. Or the flats 10G serve to prevent rotation of the rod 5 in the crossing.

En figure 4 sont représentés schématiquement en coupe longitudinale un flasque 4 sur lequel est soudé un palier dans une ampoule à vide selon l'invention. La traversée 10 du palier est représentée en projection partielle. Le soufflet métallique d'étanchéité 7 présente une extrémité qui se termine par une partie tubulaire qui traverse l'orifice 11 ménagé dans le flasque 4 ainsi que l'orifice du capot 9 du palier. Le capot 9 ainsi que que soufflet 7 sont soudés au flasque 4 par brasage au four, préférablement en une seule passe après la dernière opération de brasage au four de l'ampoule à vide. En outre, pendant cette passe unique, le soufflet 7 est avantageusement soudé au bord intérieur de l'orifice du capot 9. Dans le mode de réalisation préféré représenté, l'extrémité du soufflet 7 est insérée dans l'orifice du capot 9 pour dépasser en deçà de la collerette intérieure dudit capot. Ceci permet de vérifier à l'oeil que le soufflet est bien inséré dans l'orifice 11 du flasque 4, après la dernière opération de brasage au four. L'espace annulaire 10L de la traversée 10 est agencé pour que l'extrémité du soufflet 7 puisse se loger dans ledit espace sans appuyer contre la traversée 10 après l'encliquetage de celle-ci.In Figure 4 are shown schematically in longitudinal section a flange 4 onto which a bearing is welded in a vacuum interrupter according to the invention. The crossing 10 of the bearing is shown in partial projection. The metal sealing bellows 7 has one end which ends in a tubular part which passes through the orifice 11 formed in the flange 4 as well as the opening of the cover 9 of the bearing. The cover 9 and the bellows 7 are welded to the flange 4 by brazing in the oven, preferably in a single pass after the last vacuum brazing operation in the oven. Furthermore, during this single pass, the bellows 7 is advantageously welded to the inner edge of the orifice of the cover 9. In the preferred embodiment shown, the end bellows 7 is inserted into the opening in the cover 9 to protrude below the inner flange of said cover. This makes it possible to visually verify that the bellows is well inserted in the orifice 11 of the flange 4, after the last brazing operation in the oven. The annular space 10L of the crossing 10 is arranged so that the end of the bellows 7 can be housed in said space without pressing against the crossing 10 after the snap-fastening thereof.

En figure 5 est représenté schématiquement en perspective un autre mode de réalisation du palier de l'ampoule à vide selon l'invention, en vue éclatée avec l'extrémité de l'ampoule sur laquelle ce palier doit être monté. Seule une partie de la tige 5 est représentée, entourée par le soufflet 7. Le capot 9 du palier est identique à celui représenté à la figure 2, tandis que la traversée tubulaire isolante 10 diffère quelque peu par sa forme de celle représentée à la figure 3. La première partie tubulaire 10B de la traversée 10 est ici accolée contre la seconde partie tubulaire 10A coaxiale et de moindre longueur. De même que dans la réalisation précédente, les deux parties 10A et 10B forment préférablement une seule pièce venue de moulage, mais la traversée 10 présente ici une forme massive. La simplification de la forme de cette traversée est rendue possible par le fait que dans ce mode de réalisation de l'ampoule à vide, l'extrémité du soufflet 7 ne traverse pas l'orifice 11 du flasque 4 mais est positionnée dans une rainure circulaire ménagée à cet effet au niveau de la surface interne dudit flasque, avant le brasage au four. Ainsi, il n'est pas nécessaire que la traversée 10 présente un espace annulaire entre ses deux parties tubulaires dans cette réalisation. Le diamètre D' de l'orifice 9D de la collerette 9A du capot 9 peut alors être égal ou à peine supérieur au diamètre extérieur D de la partie tubulaire 10B de la traversée 10.In Figure 5 is shown schematically in perspective another embodiment of the vacuum bulb bearing according to the invention, in view exploded with the end of the bulb on which this bearing is to be mounted. Alone part of the rod 5 is shown, surrounded by the bellows 7. The cover 9 of the landing is identical to that shown in Figure 2, while the crossing insulating tubular 10 differs somewhat in its shape from that shown in the Figure 3. The first tubular part 10B of the crossing 10 is here joined against the second tubular part 10A coaxial and of shorter length. Of same as in the previous embodiment, the two parts 10A and 10B form preferably a single piece from molding, but the bushing 10 here presents a massive form. Simplification of the shape of this crossing is made possible by the fact that in this embodiment of the light bulb empty, the end of the bellows 7 does not pass through the orifice 11 of the flange 4 but is positioned in a circular groove made for this purpose at the level of the internal surface of said flange, before brazing in the oven. So it is not necessary that the bushing 10 has an annular space between its two tubular parts in this embodiment. The diameter D 'of the orifice 9D of the flange 9A of cover 9 can then be equal to or barely greater than the diameter outside D of the tubular part 10B of the bushing 10.

Le palier dans une ampoule à vide selon l'invention, réalisé par un encliquetage de deux pièces complémentaires, contribue à réduire le temps de montage de l'ampoule à vide et donc d'un disjoncteur à ampoule à vide. Cet encliquetage permet également d'éviter les contraintes mécaniques importantes sur l'ampoule lors du montage de la traversée isolante du palier, ainsi que lors du montage du dispositif de manoeuvre de la tige du contact mobile de l'ampoule.The bearing in a vacuum interrupter according to the invention, produced by a snap-on of two complementary parts, helps to reduce the time of mounting of the vacuum interrupter and therefore of a vacuum interrupter. This snap-in also avoids significant mechanical stresses on the bulb when mounting the insulating bushing, as well as when mounting of the device for operating the rod of the movable contact of the bulb.

Claims (6)

Une ampoule à vide pour disjoncteur, ayant un flasque métallique d'extrémité (4) qui est traversé de manière étanche par une tige (5) mobile en translation axiale, ledit flasque (4) portant un palier de guidage en translation de la tige constitué par un capot métallique (9) fixé au flasque et par une traversée tubulaire (10) en matière isolante dans laquelle ladite tige (5) peut coulisser, ladite traversée (10) comprennant des moyens d'encliquetage pour pouvoir être insérée et maintenue dans ledit capot de façon coaxiale, caractérisée en ce que lesdits moyens d'encliquetage comprennent des languettes élastiques (10D) disposées sur la périphérie extérieure de ladite traversée (10) pour pénétrer dans des évidements ou lumières (9B) disposés sur la périphérie tubulaire intérieure dudit capot (9), en ce que chaque languette élastique peut s'arc-bouter contre un bord d'une lumière (9B) une fois la traversée (10) encliquetée dans le capot (9) de façon à résister à tout effort d'extraction de la traversée, en ce que des moyens (10G) sont agencés pour empêcher la rotation de ladite tige (5) dans la traversée, et en ce que le capot comporte sur sa périphérie intérieure des bossages (9C) destinés à s'insérer dans des renfoncements (10E) de forme complémentaire ménagés sur la périphérie extérieure de la traversée afin d'empêcher tout mouvement de rotation de la traversée après l'encliquetage.A vacuum interrupter, having a metal end flange (4) which is tightly crossed by a rod (5) movable in translation axial, said flange (4) carrying a guide bearing in translation of the rod constituted by a metal cover (9) fixed to the flange and by a bushing tubular (10) of insulating material in which said rod (5) can slide, said bushing (10) comprising latching means to be able to be inserted and held in said cover coaxially, characterized in that said latching means comprise elastic tabs (10D) arranged on the outer periphery of said crossing (10) to penetrate into recesses or slots (9B) arranged on the inner tubular periphery of said cover (9), in that each elastic tongue can be braced against a edge of a light (9B) once the bushing (10) is snapped into the cover (9) so as to resist any effort to extract the crossing, in that means (10G) are arranged to prevent rotation of said rod (5) in the crossing, and in that the cover has on its inner periphery bosses (9C) intended to be inserted into shaped recesses (10E) complementary formed on the outer periphery of the crossing so to prevent any rotational movement of the bushing after snap-in. L'ampoule à vide selon la revendication 1, dans laquelle le capot (9) est accolé contre le flasque (4) à l'extérieur de l'ampoule et présente des lumières (9B) accessibles à des moyens de décliquetage destinés à s'insérer dans lesdites lumières pour appuyer sur les languettes élastiques (10D), afin de pouvoir retirer la traversée tubulaire (10) pour son recyclage.The vacuum interrupter according to claim 1, in which the cover (9) is attached against the flange (4) on the outside of the bulb and has lights (9B) accessible to release means intended to fit into said lights to press the elastic tabs (10D), in order to be able to remove the tubular bushing (10) for recycling. L'ampoule à vide selon l'une des revendications 1 et 2, dans laquelle la traversée tubulaire isolante (10) présente une première partie tubulaire (10A) qui entoure une seconde partie tubulaire (10B) coaxiale et de longueur supérieure, ces deux parties étant solidairement reliées par une troisième partie tubulaire coaxiale (10J) de moindre longueur que la première partie tubulaire (10A), de façon à ménager un espace annulaire (10L) entre lesdites première et seconde parties tubulaires.The vacuum interrupter according to one of claims 1 and 2, in which the insulating tubular bushing (10) has a first tubular part (10A) which surrounds a second tubular part (10B) coaxial and of greater length, these two parts being integrally connected by a third tubular part coaxial (10J) of shorter length than the first tubular part (10A), of so as to provide an annular space (10L) between said first and second tubular parts. L'ampoule à vide selon la revendication 3, dans laquelle une extrémité du soufflet (7) se termine par une partie tubulaire qui traverse l'orifice (11) ménagé dans le flasque (4) ainsi que l'orifice (9D) du capot (9), et dans laquelle ledit espace annulaire (10L) de ladite traversée (10) est agencé pour que ladite extrémité du soufflet (7) puisse se loger dans ledit espace sans appuyer contre la traversée (10) après l'encliquetage de celle-ci.The vacuum interrupter according to claim 3, wherein one end of the bellows (7) ends in a tubular part which crosses the orifice (11) formed in the flange (4) as well as the orifice (9D) of the cover (9), and in which said annular space (10L) of said bushing (10) is arranged so that said end of the bellows (7) can be housed in said space without pressing against the bushing (10) after it clicks into place. L'ampoule à vide selon l'une des revendications 1 à 2, dans laquelle la traversée tubulaire isolante (10) présente une première partie tubulaire (10B) accolée contre une seconde partie tubulaire (10A) coaxiale de moindre longueur qui l'entoure de façon à ce que ladite traversée (10) ait une forme massive.The vacuum interrupter according to one of claims 1 to 2, in which the insulating tubular bushing (10) has a first tubular part (10B) attached to a second coaxial tubular part (10A) of shorter length which surrounds it so that said crossing (10) has a massive shape. L'ampoule à vide selon l'une des revendications 1 à 5, dans laquelle la traversée (10) est réalisée en une matière plastique injectée et le capot (9) est une tôle emboutie.The vacuum interrupter according to one of claims 1 to 5, in which the bushing (10) is made of an injected plastic and the cover (9) is a stamped sheet.
EP01400156A 2000-01-25 2001-01-19 Vacuum tube for circuit breaker, having a snap-on guide bearing Expired - Lifetime EP1120803B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE60124601T DE60124601T3 (en) 2000-01-25 2001-01-19 Vacuum tube for circuit breaker, with snap-mounted guide bearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0000907A FR2804241B1 (en) 2000-01-25 2000-01-25 VACUUM BULB FOR CIRCUIT BREAKER HAVING LOCKING MOUNTED BEARING
FR0000907 2000-01-25

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EP1120803A1 true EP1120803A1 (en) 2001-08-01
EP1120803B1 EP1120803B1 (en) 2006-11-22
EP1120803B2 EP1120803B2 (en) 2012-07-11

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AT (1) ATE346371T1 (en)
DE (1) DE60124601T3 (en)
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Publication number Priority date Publication date Assignee Title
EP1443537A1 (en) * 2003-01-31 2004-08-04 Siemens Aktiengesellschaft Arrangement with a vacuum switch tube
CN105914097A (en) * 2015-02-23 2016-08-31 Ls产电株式会社 Vacuum interrupter
JP2017016988A (en) * 2015-07-07 2017-01-19 三菱電機株式会社 Vacuum valve and vacuum breaker
CN108447727A (en) * 2018-05-10 2018-08-24 厦门宏发电力电器有限公司 A kind of vacuum interrupter

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Publication number Priority date Publication date Assignee Title
FR3037709B1 (en) * 2015-06-22 2018-05-11 Schneider Electric Industries Sas VACUUM BULB AND ELECTRICAL PROTECTIVE APPARATUS COMPRISING SUCH BULB

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DE2440827A1 (en) * 1974-08-26 1976-03-11 Siemens Ag Tubular vacuum switch with contact moving in gland bush - which is of thermoplastics secured, vacuum tight, to gland
FR2683940A1 (en) * 1991-11-20 1993-05-21 Alsthom Gec MEDIUM VOLTAGE CIRCUIT BREAKER FOR INDOOR OR OUTDOOR USE.

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DE19629204C2 (en) † 1996-07-19 2003-03-13 Abb Patent Gmbh Vacuum interrupter chamber

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Publication number Priority date Publication date Assignee Title
DE2440827A1 (en) * 1974-08-26 1976-03-11 Siemens Ag Tubular vacuum switch with contact moving in gland bush - which is of thermoplastics secured, vacuum tight, to gland
FR2683940A1 (en) * 1991-11-20 1993-05-21 Alsthom Gec MEDIUM VOLTAGE CIRCUIT BREAKER FOR INDOOR OR OUTDOOR USE.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1443537A1 (en) * 2003-01-31 2004-08-04 Siemens Aktiengesellschaft Arrangement with a vacuum switch tube
CN105914097A (en) * 2015-02-23 2016-08-31 Ls产电株式会社 Vacuum interrupter
US9552946B2 (en) 2015-02-23 2017-01-24 Lsis Co., Ltd. Vacuum interrupter
CN105914097B (en) * 2015-02-23 2018-02-06 Ls产电株式会社 Vacuum interrupter
JP2017016988A (en) * 2015-07-07 2017-01-19 三菱電機株式会社 Vacuum valve and vacuum breaker
CN108447727A (en) * 2018-05-10 2018-08-24 厦门宏发电力电器有限公司 A kind of vacuum interrupter

Also Published As

Publication number Publication date
ATE346371T1 (en) 2006-12-15
FR2804241A1 (en) 2001-07-27
FR2804241B1 (en) 2002-06-21
DE60124601D1 (en) 2007-01-04
DE60124601T2 (en) 2007-09-13
EP1120803B2 (en) 2012-07-11
EP1120803B1 (en) 2006-11-22
DE60124601T3 (en) 2012-10-25

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