WO2011141480A1 - Fixing of a medium- or high-voltage electrical apparatus on a base by force fitting - Google Patents

Fixing of a medium- or high-voltage electrical apparatus on a base by force fitting Download PDF

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Publication number
WO2011141480A1
WO2011141480A1 PCT/EP2011/057555 EP2011057555W WO2011141480A1 WO 2011141480 A1 WO2011141480 A1 WO 2011141480A1 EP 2011057555 W EP2011057555 W EP 2011057555W WO 2011141480 A1 WO2011141480 A1 WO 2011141480A1
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WO
WIPO (PCT)
Prior art keywords
assembly
base
tube
diameter
elements
Prior art date
Application number
PCT/EP2011/057555
Other languages
French (fr)
Inventor
Johannes Blatter
Original Assignee
Alstom Grid Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom Grid Ag filed Critical Alstom Grid Ag
Priority to CH02298/12A priority Critical patent/CH705264B1/en
Publication of WO2011141480A1 publication Critical patent/WO2011141480A1/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7061—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by use of special mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers

Definitions

  • the invention relates to the attachment of an electrical appliance of medium or high voltage, for example a circuit breaker, on a base, in particular in the frame of apparatus placed in a special gas chamber, such as sulfur exfluoride (SF6 ), and including in particular three phases. It relates in particular to the fixing of a gas guide tube on a radial base with respect to the longitudinal axis of the enclosure containing such a circuit breaker.
  • a gas guide tube on a radial base with respect to the longitudinal axis of the enclosure containing such a circuit breaker.
  • a concentric tube intended to guide the gases coming from the electric arc produced during the interruption of the current.
  • a gas guide tube constitutes a dielectric screen.
  • this type of device is often used more for each of the three phases in production units and / or transmission of high power electrical energy.
  • the three phases are often confined in a sealed enclosure under a special gas, in particular sulfur exfluoride (SF6).
  • SF6 sulfur exfluoride
  • This gas, SF6 is intended to isolate the three phases from each other so as to reduce the congestion constituted by the three phases and their enclosure.
  • the object of the invention is therefore to limit the size of the enclosure as much as possible for reasons of space and cost.
  • EP 588 709 A1 discloses a circuit breaker having tubular elements fixed by hooping. Indeed, with reference to Figure 1, a base of the hoop ring 107 is used to press a first contact 101 against an end annular flange 106.
  • this hooping can be mechanical that is to say by cold pressing of the ring of the ring on the part, but can also be thermal, that is to say by fitting after hot expansion which implies a force fitting after cooling.
  • machining is numerous for the manufacture of such a device and are increased if axial slots are used. In addition, they require the use of an additional pressure ring. It should be added that the hoop ring 107 protrudes from the outer diameter of the annular end flange 106 and the first contact 101, which requires a larger housing space.
  • US Pat. No. 4,616,856 discloses a method of attaching a nozzle to its base.
  • the fixing means are obtained both by screwing the attachment elements 116 of the nozzle in a threaded bore 119 of the base 114 in which the nozzle 112 must be fixed.
  • the assembly means are complemented by a snap of projections 122 placed at the end of the assembly means 116 of the nozzle 112 and intended to fit into a corresponding groove 124 of the base 114.
  • the complementary step shape of these two elements allows a firm and permanent attachment of the nozzle 112 in its base 114.
  • the main object of the invention is a medium or high voltage electrical assembly, single phase or multiphase, placed in a sealed enclosure, each phase assembly including, inter alia, a base on which is fixed a tube, these two pieces each having a determined outer diameter and being assembled by means of assembly.
  • the assembly means are internal, that is to say that their maximum overall diameter is smaller than the diameters determined outer portions of the base and the tube, so that each phase assembly has a smooth outer surface, without bulk protruding from the surface of these elements.
  • the assembly means are constituted, inter alia, by a male connecting element fixed on a first of the two elements which are the tube and the base and whose outer diameter is smaller than the diameter of the first element on which it is used to to be introduced into a female connecting element placed on the second of the elements which are the base and the tube and whose internal diameter is very slightly less than the external diameter of the male connecting element, before assembly, so as to constitute a force-fit connection to obtain a very tight fit.
  • the male fastener is attached to the tube and the female fastener is attached to the base.
  • the tube is a gas guide tube.
  • the assembly means for each phase, are completed with latching means constituted on the male assembly element and the female assembly element, starting from their end of assembly, a cylindrical projection followed by a groove, the initial diameter of the projection of each of the two elements being, before assembly, slightly greater than the diameter of the groove of the other element and in which it is intended to be housed, so as to achieve an assembly by very tightened or press fit, once the base and the gas guide tube are assembled.
  • the assembly ends of the male and female assembly elements each have a chamfer.
  • the assembly according to the invention is intended to comprise three phases.
  • This set is particularly applicable to medium and high voltage circuit breakers.
  • the gas guide tube does not have longitudinal grooves or slots at the projection and the groove.
  • FIG. 3 partially describes a high-voltage circuit breaker to which the invention applies.
  • a fixed contact and a movable contact are placed inside an insulating nozzle 1.
  • a control rod 64 is placed centrally and is fixed to an inner gas guide tube 3 which itself supports the mobile contact. The latter can be connected and disconnected from the fixed contact.
  • the cutoff space is located inside the insulating nozzle 1 which has a smaller diameter area 6.
  • the hot gas generated during the operation of interruption of current flows at very high pressure from the place of smaller diameter 6 towards the inside of the inner gas guiding tube 3.
  • the gases then take an opening 4 which is provided therein and an intermediate gas guiding tube 5 to terminate in a peripheral outlet space 7 which is delimited by the gas guiding tube 20 and a base 10.
  • An outlet space 8 allows the evacuation of gases of this exit space 7.
  • the gas guiding tube 20 withstands significant mechanical stresses generated by the very high pressure of the exit gases. These stresses are manifested both radially and longitudinally.
  • an asymmetrical boss 11 is provided at the periphery of the apparatus to compensate for the radial forces caused by the presence of an opening 21 on the outer surface of the gas guiding tube 20. This opening 21 can be used for an electrical connection.
  • the gas guide tube 20 is supported mainly by the base 10.
  • An assembly 30 is provided between the base 10 and the force-fit or tight fit type gas-guiding tube 20, completed with a latching system.
  • the base 10 is fixedly connected to a base plate by means of at least two support bars 15 which are preferably made of insulating material.
  • FIG. 4 thus represents the main elements of the assembly system according to the invention before their assembly, that is to say that they are represented separately in this FIG. 4.
  • the base 10 has a larger and determined outer diameter portion. It also has a male assembly element constituted mainly, starting from its end, a chamfer 14 followed by a radial projection 13 and a radial groove 12.
  • the projection 13 may be single or be interrupted over the entire circumference of this male assembly element.
  • the gas guiding tube 20 constitutes at its end a female assembly part. This one is constituted more exactly, and in correspondence with the different parts of the male assembly member of an inner chamfer 22, followed by a projection 23 which is internal then a groove 24 which is also internal.
  • the two chamfers 14 and 22 serve to facilitate assembly of the assembly.
  • the outer diameter of the groove 12 of the male connecting element is very slightly greater than the internal diameter of the projection 23 of the female coupling element.
  • the outer diameter of the projection 13 of the male connecting element is very slightly greater than the diameter of the groove 24 which is internal in the female coupling element.
  • the ratio of the inner diameter of the projection 23 to the outer diameter of the groove 12 is about 1.01 to 1.02.
  • the ratio of the outer diameter of the projection 13 to the outer diameter of the groove 12 is about 3 to 4 times the ratio of the internal diameter of the projection 23 to the outer diameter of the groove 12.
  • the projection 13 of the male connecting element is therefore intended to be housed in the groove 24 inside the female coupling element.
  • the projection 23 which is internal in the female coupling element is intended to come into the groove 12 of the male coupling element.
  • the gas guide tube 20 is placed on the base 10 by a force fit.
  • the gas-guiding tube 20 is expanded by elastic deformation, in particular at the level of the chamfers 14 and 22, slides on the projection 13 and engages in the groove 12.
  • the elastic deformation of the gas-guiding tube 20 is about 5% when it slides on the projection 13 and about 1 to 1.5% when it engages in the groove 12.
  • the gas guide tube 20 has no grooves or longitudinal slots at less in the region of the projection 23 and the groove 24 to have a greater strength of resistance, when stressed.
  • Figure 5 shows the assembly after assembly, but with exaggerated taper to better understand how the very tight fit is achieved by this system.
  • Figure 6 shows three circuit breaker elements 19 each relating to a different phase, placed in parallel in a common enclosure 9 which is sealed and filled with SF6. They are attached to a support plate 40 by two or more support bars 15 as shown in FIG.
  • Each guide tube 20 is fixed to its respective base 10 by the assembly explained in correspondence with FIGS. 4 and 5, the external surface of the assembly being smooth, with no element projecting from the overall diameter of the assembly. base 10 / gas guide tube 20. In this Figure 6, the very slight taper of the assembly has been neglected.
  • the gas guide tube fixing means described in this description may be used to secure any tubular member in an electrical equipment.
  • a tube can be used to control the electric field or to protect elements of an electric field or to protect elements with respect to transition overvoltage waves.

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  • Circuit Breakers (AREA)

Abstract

The assembly system used makes it possible to obtain a general external surface of a wide part of a medium- or high-voltage circuit breaker, and which is perfectly smooth and has no protruding element. A gas guidance tube (20) is fixed to a base (10) by means of a snap fastening consisting mainly of two respective projections (13) and (23) that are required to be housed in respective grooves (12) and (24). The nominal diameters before mounting of the projections with respect to their corresponding grooves are very slightly greater so as to obtain a very tight fit by force fitting so as to obtain an assembly of maximum reliability. Application to medium- and high-voltage circuit breakers.

Description

FIXATION D'UN APPAREIL ELECTRIQUE DE MOYENNE OU HAUTE TENSION SUR UNE BASE PAR EMMANCHEMENT A FORCE  ATTACHING A MEDIUM OR HIGH VOLTAGE ELECTRICAL APPARATUS TO A BASE BY FORCE-CONNECTION
DESCRIPTION DESCRIPTION
DOMAINE TECHNIQUE TECHNICAL AREA
L'invention concerne la fixation d'un appareil électrique de moyenne ou haute tension, par exemple un disjoncteur, sur une base, notamment dans le cadre d'appareil mis dans une enceinte sous gaz spécial, tel que 1 ' exafluorure de soufre (SF6) , et comprenant notamment trois phases. Elle concerne en particulier la fixation d'un tube de guidage de gaz sur une base radiale par rapport à l'axe longitudinal de l'enceinte contenant un tel disjoncteur.  The invention relates to the attachment of an electrical appliance of medium or high voltage, for example a circuit breaker, on a base, in particular in the frame of apparatus placed in a special gas chamber, such as sulfur exfluoride (SF6 ), and including in particular three phases. It relates in particular to the fixing of a gas guide tube on a radial base with respect to the longitudinal axis of the enclosure containing such a circuit breaker.
ÉTAT DE LA TECHNIQUE ANTÉRIEURE STATE OF THE PRIOR ART
Dans un certain type de disjoncteur à moyenne et haute tension, on utilise, entre autres, un tube concentrique destiné à guider les gaz en provenance de l'arc électrique produit lors de l'interruption du courant. Un tel tube de guidage de gaz constitue un écran diélectrique.  In a certain type of medium and high voltage circuit breaker, one uses, among other things, a concentric tube intended to guide the gases coming from the electric arc produced during the interruption of the current. Such a gas guide tube constitutes a dielectric screen.
De plus, ce type d'appareil est souvent plus utilisé pour chacune des trois phases dans des unités de production et/ ou de transmission d'énergie électrique à haute puissance. Dans ce cas, les trois phases sont souvent confinées dans une enceinte étanche sous un gaz spécial, en particulier 1 ' exafluorure de soufre (SF6) . Ce gaz, SF6, est destiné à isoler les trois phases les unes des autres de manière à réduire l'encombrement constitué par les trois phases et leur enceinte. Le but de l'invention est donc de limiter le plus possible la taille de l'enceinte pour des raisons d'encombrement et de coût. In addition, this type of device is often used more for each of the three phases in production units and / or transmission of high power electrical energy. In this case, the three phases are often confined in a sealed enclosure under a special gas, in particular sulfur exfluoride (SF6). This gas, SF6, is intended to isolate the three phases from each other so as to reduce the congestion constituted by the three phases and their enclosure. The object of the invention is therefore to limit the size of the enclosure as much as possible for reasons of space and cost.
D'autre part, par le document de brevet On the other hand, by the patent document
EP 588 709 Al, on connaît un disjoncteur possédant des éléments tubulaires fixés par frettage . En effet, en référence à la figure 1, une base de la bague de frette 107 est utilisée pour plaquer un premier contact 101 contre une bride annulaire d'extrémité 106. De plus, il est précisé dans ce document que ce frettage peut être mécanique, c'est-à-dire par enfoncement à froid de la bague de frette sur la pièce, mais peut être également thermique, c'est-à-dire par emmanchement après dilatation à chaud ce qui implique un emmanchement à force après refroidissement. EP 588 709 A1 discloses a circuit breaker having tubular elements fixed by hooping. Indeed, with reference to Figure 1, a base of the hoop ring 107 is used to press a first contact 101 against an end annular flange 106. In addition, it is stated in this document that this hooping can be mechanical that is to say by cold pressing of the ring of the ring on the part, but can also be thermal, that is to say by fitting after hot expansion which implies a force fitting after cooling.
Dans ce premier document de 1 ' art antérieur, les usinages sont nombreux pour la fabrication d'un tel dispositif et sont augmentés si on utilise des fentes axiales. De plus, ils nécessitent l'utilisation d'une bague de pression supplémentaire. Il faut rajouter que la bague de frette 107 fait saillie par rapport au diamètre externe de la bride annulaire d'extrémité 106 et du premier contact 101, ce qui nécessite un plus grand espace de logement.  In this first document of the prior art, machining is numerous for the manufacture of such a device and are increased if axial slots are used. In addition, they require the use of an additional pressure ring. It should be added that the hoop ring 107 protrudes from the outer diameter of the annular end flange 106 and the first contact 101, which requires a larger housing space.
De plus, en référence à la figure 2, par le document de brevet US 4, 616, 856, on connaît un mode de fixation d'une buse sur sa base. Les moyens de fixation sont obtenus à la fois par vissage des éléments de fixation 116 de la buse dans un alésage taraudé 119 de la base 114 dans laquelle la buse 112 doit être fixée. Les moyens d'assemblage se complètent d'un encliquetage de saillies 122 placées à l'extrémité des moyens d'assemblage 116 de la buse 112 et destinés à rentrer dans une rainure correspondante 124 de la base 114. La forme en décrochement complémentaire de ces deux éléments permet une fixation ferme et définitive de la buse 112 dans sa base 114. In addition, with reference to FIG. 2, US Pat. No. 4,616,856 discloses a method of attaching a nozzle to its base. The fixing means are obtained both by screwing the attachment elements 116 of the nozzle in a threaded bore 119 of the base 114 in which the nozzle 112 must be fixed. The assembly means are complemented by a snap of projections 122 placed at the end of the assembly means 116 of the nozzle 112 and intended to fit into a corresponding groove 124 of the base 114. The complementary step shape of these two elements allows a firm and permanent attachment of the nozzle 112 in its base 114.
Dans ce dernier document de 1 ' art antérieur, l'utilisation de filetage et de taraudage demande des usinages de haute précision, implique une augmentation substantielle du diamètre final de l'ensemble et un procédé d'assemblage coûteux.  In this latter document of the prior art, the use of threading and tapping requires high precision machining, involves a substantial increase in the final diameter of the assembly and an expensive assembly process.
EXPOSÉ DE L' INVENTION STATEMENT OF THE INVENTION
Pour atteindre un tel objectif de réduction de l'encombrement du contenu de l'enceinte, on se propose de réduire au maximum le diamètre externe des pièces constitutives de ces appareillages utilisés dans les trois phases, en particulier les moyens d'assemblage du tube de guidage de gaz sur la base.  To achieve such an objective of reducing the size of the contents of the enclosure, it is proposed to minimize the outer diameter of the component parts of these devices used in the three phases, in particular the assembly means of the tube of gas guiding on the base.
Dans ce but, l'objet principal de 1 ' invention est un ensemble électrique moyenne ou haute tension, monophase ou multiphase, placé dans une enceinte étanche, chaque ensemble de phase comportant, entre autres, une base sur laquelle est fixé un tube, ces deux pièces ayant chacune un diamètre externe déterminé et étant assemblées par des moyens d ' assemblage .  For this purpose, the main object of the invention is a medium or high voltage electrical assembly, single phase or multiphase, placed in a sealed enclosure, each phase assembly including, inter alia, a base on which is fixed a tube, these two pieces each having a determined outer diameter and being assembled by means of assembly.
Selon l'invention, les moyens d'assemblage sont internes, c'est-à-dire que leur diamètre d'encombrement maximal est inférieur au diamètres externes déterminés de la base et du tube, de manière à ce que chaque ensemble de phase présente une surface externe lisse, sans encombrement dépassant de la surface de ces éléments. Les moyens d'assemblage sont constitués, entre autres, par un élément d'assemblage mâle fixé sur un premier des deux éléments que sont le tube et la base et dont le diamètre externe est inférieur au diamètre du premier élément sur lequel il est utilisé pour être introduit dans un élément d'assemblage femelle placé sur le deuxième des éléments que sont la base et le tube et dont le diamètre interne est très légèrement inférieur au diamètre externe de l'élément d'assemblage mâle, avant montage, de façon à constituer un assemblage par emmanchement à force permettant d'obtenir un ajustement très serré. According to the invention, the assembly means are internal, that is to say that their maximum overall diameter is smaller than the diameters determined outer portions of the base and the tube, so that each phase assembly has a smooth outer surface, without bulk protruding from the surface of these elements. The assembly means are constituted, inter alia, by a male connecting element fixed on a first of the two elements which are the tube and the base and whose outer diameter is smaller than the diameter of the first element on which it is used to to be introduced into a female connecting element placed on the second of the elements which are the base and the tube and whose internal diameter is very slightly less than the external diameter of the male connecting element, before assembly, so as to constitute a force-fit connection to obtain a very tight fit.
Dans une réalisation prévue, l'élément d'assemblage mâle est fixé sur le tube et en ce que l'élément d'assemblage femelle est fixé sur la base.  In one embodiment, the male fastener is attached to the tube and the female fastener is attached to the base.
Dans l'application prévue selon l'invention le tube est un tube de guidage de gaz.  In the application provided according to the invention the tube is a gas guide tube.
Dans une réalisation préférentielle de l'invention, les moyens d'assemblage, pour chaque phase, sont complétés de moyens d ' encliquetage constitués sur l'élément d'assemblage mâle et l'élément d'assemblage femelle, en partant de leur extrémité d'assemblage, d'une saillie cylindrique suivie d'une rainure, le diamètre initial de la saillie de chacun des deux éléments étant, avant montage, légèrement supérieur au diamètre de la rainure de l'autre élément et dans laquelle elle est destinée à être logée, de manière à réaliser un assemblage par ajustement très serré ou emmanchement à force, une fois la base et le tube de guidage de gaz assemblés. In a preferred embodiment of the invention, the assembly means, for each phase, are completed with latching means constituted on the male assembly element and the female assembly element, starting from their end of assembly, a cylindrical projection followed by a groove, the initial diameter of the projection of each of the two elements being, before assembly, slightly greater than the diameter of the groove of the other element and in which it is intended to be housed, so as to achieve an assembly by very tightened or press fit, once the base and the gas guide tube are assembled.
Dans le but de permettre le montage de ces éléments, il est avantageux que les extrémités d'assemblage des éléments d'assemblage mâle et femelle possèdent chacune un chanfrein.  In order to allow the assembly of these elements, it is advantageous that the assembly ends of the male and female assembly elements each have a chamfer.
L'ensemble selon l'invention est prévu pour comprendre trois phases.  The assembly according to the invention is intended to comprise three phases.
Cet ensemble s'applique particulièrement aux disjoncteurs moyenne et haute tension.  This set is particularly applicable to medium and high voltage circuit breakers.
De préférence, le tube de guidage de gaz ne possède pas de rainures ou de fentes longitudinales au niveau de la saillie et de la rainure.  Preferably, the gas guide tube does not have longitudinal grooves or slots at the projection and the groove.
BRÈVE DESCRIPTION DES DESSINS BRIEF DESCRIPTION OF THE DRAWINGS
L'invention et ses différentes caractéristiques techniques seront mieux comprises à la lecture de l'invention qui est illustrée par plusieurs figures représentant respectivement:  The invention and its various technical features will be better understood on reading the invention which is illustrated by several figures respectively representing:
- Figure 1, en coupe, une partie d'un disjoncteur selon l'art antérieur;  - Figure 1, in section, a part of a circuit breaker according to the prior art;
- Figure 2 en coupe, le montage d'une buse sur sa base selon l'art antérieur;  - Figure 2 in section, the mounting of a nozzle on its base according to the prior art;
- Figure 3, en vue, un ensemble électrique auquel est appliquée l'invention;  - Figure 3, in view, an electrical assembly to which the invention is applied;
- Figure 4, en coupe partielle, les éléments constitutifs de l'invention opposition avant montage;  - Figure 4, in partial section, the constituent elements of the invention opposition before assembly;
- Figure 5, en coupe partielle, les éléments constitutifs de l'invention une fois montés; - Figure 6, en coupe, un élément complet selon l'invention dans une application triphasée . EXPOSÉ DÉTAILLÉ D ' UN MODE DE RÉALISATION PARTICULIER - Figure 5, in partial section, the constituent elements of the invention once mounted; - Figure 6, in section, a complete element according to the invention in a three-phase application. DETAILED PRESENTATION OF A PARTICULAR EMBODIMENT
En référence à la figure 3, on décrit partiellement un disjoncteur à haute tension auquel s'applique l'invention. Un contact fixe et un contact mobile sont placés à l'intérieur d'une buse d'isolation 1. Une tige de commande 64 est placée de manière centrale et est fixée à un tube intérieur de guidage de gaz 3 qui supporte lui-même le contact mobile. Ce dernier peut être donc connecté et déconnecté du contact fixe. L'espace de coupure se trouve à l'intérieur de la buse d'isolation 1 qui présente un endroit de moindre diamètre 6. Referring to Figure 3, partially describes a high-voltage circuit breaker to which the invention applies. A fixed contact and a movable contact are placed inside an insulating nozzle 1. A control rod 64 is placed centrally and is fixed to an inner gas guide tube 3 which itself supports the mobile contact. The latter can be connected and disconnected from the fixed contact. The cutoff space is located inside the insulating nozzle 1 which has a smaller diameter area 6.
Le gaz chaud généré pendant l'opération d'interruption de courant circule à très haute pression à partir de l'endroit de moindre diamètre 6 vers l'intérieur du tube intérieur de guidage de gaz 3. Les gaz empruntent alors une ouverture 4 qui est prévue dans celui-ci et un tube intermédiaire de guidage de gaz 5 pour aboutir dans un espace périphérique de sortie 7 qui est délimité par le tube de guidage de gaz 20 et une base 10. Un espace de sortie 8 permet l'évacuation des gaz de cet espace de sortie 7.  The hot gas generated during the operation of interruption of current flows at very high pressure from the place of smaller diameter 6 towards the inside of the inner gas guiding tube 3. The gases then take an opening 4 which is provided therein and an intermediate gas guiding tube 5 to terminate in a peripheral outlet space 7 which is delimited by the gas guiding tube 20 and a base 10. An outlet space 8 allows the evacuation of gases of this exit space 7.
Le tube de guidage de gaz 20 supporte d' importantes contraintes mécaniques générées par la très haute pression des gaz de sortie. Ces contraintes se manifestent aussi bien radialement que longitudinalement . Dans l'exemple de réalisation décrit sur cette figure 3, un bossage dissymétrique 11 est prévu en périphérie de l'appareil pour compenser les forces radiales provoquées par la présence d'une ouverture 21 sur la surface externe du tube de guidage de gaz 20. Cette ouverture 21 peut être utilisée pour une connexion électrique. Enfin, le tube de guidage de gaz 20 est supporté principalement par la base 10. The gas guiding tube 20 withstands significant mechanical stresses generated by the very high pressure of the exit gases. These stresses are manifested both radially and longitudinally. In the exemplary embodiment described in this FIG. 3, an asymmetrical boss 11 is provided at the periphery of the apparatus to compensate for the radial forces caused by the presence of an opening 21 on the outer surface of the gas guiding tube 20. This opening 21 can be used for an electrical connection. Finally, the gas guide tube 20 is supported mainly by the base 10.
Un assemblage 30 est prévu entre la base 10 et le tube de guidage de gaz 20 de type à emmanchement à force ou ajustement très serré, complété d'un système d ' encliquetage .  An assembly 30 is provided between the base 10 and the force-fit or tight fit type gas-guiding tube 20, completed with a latching system.
Sur cette figure 3, on montre également que la base 10 est reliée de manière fixe à une plaque de base au moyen d'au moins deux barres support 15 qui sont de préférence en matériau isolant.  In this figure 3, it is also shown that the base 10 is fixedly connected to a base plate by means of at least two support bars 15 which are preferably made of insulating material.
La figure 4 représente donc les principaux éléments du système d'assemblage selon l'invention avant leur montage, c'est-à-dire qu'ils sont représentés de façon séparée, sur cette figure 4.  FIG. 4 thus represents the main elements of the assembly system according to the invention before their assembly, that is to say that they are represented separately in this FIG. 4.
La base 10 possède une partie de diamètre externe le plus important et déterminé. Elle possède aussi un élément d'assemblage mâle constitué principalement, en partant de son extrémité, d'un chanfrein 14 suivi d'une saillie radiale 13 puis d'une rainure radiale 12. La saillie 13 peut être unique ou être interrompue sur toute la circonférence de cet élément d'assemblage mâle.  The base 10 has a larger and determined outer diameter portion. It also has a male assembly element constituted mainly, starting from its end, a chamfer 14 followed by a radial projection 13 and a radial groove 12. The projection 13 may be single or be interrupted over the entire circumference of this male assembly element.
En correspondance, le tube de guidage de gaz 20 constitue par son extrémité une partie d'assemblage femelle. Celle-ci est constituée plus exactement, et en correspondance avec les différentes parties de l'élément d'assemblage mâle d'un chanfrein intérieur 22, suivi d'une saillie 23 qui est interne puis d'une rainure 24 qui est également interne. Les deux chanfreins 14 et 22 servent à faciliter le montage de 1 ' ensemble . In correspondence, the gas guiding tube 20 constitutes at its end a female assembly part. This one is constituted more exactly, and in correspondence with the different parts of the male assembly member of an inner chamfer 22, followed by a projection 23 which is internal then a groove 24 which is also internal. The two chamfers 14 and 22 serve to facilitate assembly of the assembly.
On précise que, avant le montage, le diamètre externe de la rainure 12 de l'élément d'assemblage mâle est très légèrement supérieur au diamètre interne de la saillie 23 de l'élément d'assemblage femelle. De même, le diamètre externe de la saillie 13 de l'élément d'assemblage mâle est très légèrement supérieur au diamètre de la rainure 24 qui est interne dans l'élément d'assemblage femelle. Le rapport du diamètre interne de la saillie 23 par rapport au diamètre externe de la rainure 12 est environ de 1,01 à 1,02.  It should be noted that, before assembly, the outer diameter of the groove 12 of the male connecting element is very slightly greater than the internal diameter of the projection 23 of the female coupling element. Likewise, the outer diameter of the projection 13 of the male connecting element is very slightly greater than the diameter of the groove 24 which is internal in the female coupling element. The ratio of the inner diameter of the projection 23 to the outer diameter of the groove 12 is about 1.01 to 1.02.
Le rapport du diamètre externe de la saillie 13 par rapport au diamètre externe de la rainure 12 est environ de 3 à 4 fois le rapport du diamètre interne de la saillie 23 par rapport au diamètre externe de la rainure 12.  The ratio of the outer diameter of the projection 13 to the outer diameter of the groove 12 is about 3 to 4 times the ratio of the internal diameter of the projection 23 to the outer diameter of the groove 12.
La saillie 13 de l'élément d'assemblage mâle est donc destinée à être logée dans la rainure 24 à l'intérieur de l'élément d'assemblage femelle. En correspondance, la saillie 23 qui est interne dans l'élément d'assemblage femelle est destinée à venir dans la rainure 12 de l'élément d'assemblage mâle.  The projection 13 of the male connecting element is therefore intended to be housed in the groove 24 inside the female coupling element. In correspondence, the projection 23 which is internal in the female coupling element is intended to come into the groove 12 of the male coupling element.
Le fait que le diamètre des surfaces des parties des éléments d'assemblage mâle et femelle qui doivent être placés en face l'une de l'autre soit différent contribue à obtenir un emmanchement à force et un ajustement très serré. The fact that the diameter of the surfaces of the parts of the male and female connecting elements which must be placed opposite each other is different helps to get a press fit and a very tight fit.
Pour l'assemblage, le tube de guidage de gaz 20 est placé sur la base 10 par un emmanchement en force. De cette manière, le tube de guidage de gaz 20 est élargi par déformation élastique notamment au niveau des chanfreins 14 et 22, glisse sur la saillie 13 et s'engage dans la rainure 12. La déformation élastique du tube de guidage de gaz 20 est environ de 5% lorsqu'il glisse sur la saillie 13 et environ de 1 à 1,5% lorsqu'il s'engage dans la rainure 12. Le tube de guidage de gaz 20 n'a pas de rainures ou de fentes longitudinales au moins dans la région de la saillie 23 et de la rainure 24 pour présenter une plus grande force de résistance, lorsqu'il est sollicité en contrainte .  For assembly, the gas guide tube 20 is placed on the base 10 by a force fit. In this way, the gas-guiding tube 20 is expanded by elastic deformation, in particular at the level of the chamfers 14 and 22, slides on the projection 13 and engages in the groove 12. The elastic deformation of the gas-guiding tube 20 is about 5% when it slides on the projection 13 and about 1 to 1.5% when it engages in the groove 12. The gas guide tube 20 has no grooves or longitudinal slots at less in the region of the projection 23 and the groove 24 to have a greater strength of resistance, when stressed.
La figure 5 montre l'ensemble après montage, mais avec une conicité exagérée pour mieux comprendre la manière par laquelle l'ajustement très serré est obtenu par ce système.  Figure 5 shows the assembly after assembly, but with exaggerated taper to better understand how the very tight fit is achieved by this system.
En effet, une fois l'élément d'assemblage mâle emmanché à force dans l'élément d'assemblage femelle, une déformation élastique des matériaux, de l'ordre de 1 à 1,5% pour le tube de guidage de gaz, s'est produite. On constate ainsi que la saillie 13 de l'élément d'assemblage mâle se trouve dans la rainure 24 qui est interne dans l'élément d'assemblage femelle et que la saillie 23 de ce dernier se trouve dans la rainure 12 de l'élément d'assemblage mâle. On conçoit ainsi que de très fortes pressions de contact soient créées entre ces différentes surfaces. Le démontage de l'ensemble peut se faire avec une force qui est de l'ordre de 3 fois et demie plus importante que la force d'assemblage. Compte tenu de la forme des saillies 13 et 23, ce démontage s'effectue par rupture des saillies 13 et 23 et donc endommagement de celles-ci. Elles deviennent inutilisables. Ce rapport de 3 montre l'efficacité de cet encliquetage . Sans ce dernier, la force de démontage serait équivalente à la force de montage. Indeed, once the male assembly member forcibly fitted into the female assembly element, an elastic deformation of the materials, of the order of 1 to 1.5% for the gas guide tube, s is produced. It can thus be seen that the projection 13 of the male connecting element is in the groove 24 which is internal to the female joining element and that the projection 23 of the latter is in the groove 12 of the element male assembly. It is thus conceivable that very high contact pressures are created between these different surfaces. The disassembly of the assembly can be done with a force which is of the order of 3 and a half times greater than the assembly force. Given the shape of the projections 13 and 23, this disassembly is effected by breaking the projections 13 and 23 and thus damaging them. They become unusable. This ratio of 3 shows the effectiveness of this snap. Without the latter, the disassembly force would be equivalent to the mounting force.
La figure 6 montre trois éléments de disjoncteur 19 relatifs chacun à une phase différente, placés de façon parallèle dans une enceinte commune 9 qui est étanche et remplie de SF6. Ils sont fixés à une plaque support 40 par deux ou plus barres support 15 comme représenté sur la figure 1.  Figure 6 shows three circuit breaker elements 19 each relating to a different phase, placed in parallel in a common enclosure 9 which is sealed and filled with SF6. They are attached to a support plate 40 by two or more support bars 15 as shown in FIG.
Chaque tube de guidage 20 est fixé à sa base respective 10 par l'assemblage expliqué en correspondance avec les figures 4 et 5, la surface externe de l'ensemble étant lisse, aucun élément ne faisant saillie par rapport au diamètre général de l'ensemble base 10 /tube de guidage de gaz 20. Sur cette figure 6, la très légère conicité de l'assemblage a été négligée .  Each guide tube 20 is fixed to its respective base 10 by the assembly explained in correspondence with FIGS. 4 and 5, the external surface of the assembly being smooth, with no element projecting from the overall diameter of the assembly. base 10 / gas guide tube 20. In this Figure 6, the very slight taper of the assembly has been neglected.
L'exemple représenté décrit dans cette description montre trois phases à l'intérieur d'une enceinte. On pourrait envisager qu'une seule phase soit placée dans une telle enceinte tout en bénéficiant du système d'assemblage décrit précédemment.  The example shown described in this description shows three phases inside an enclosure. One could consider that a single phase is placed in such a chamber while benefiting from the assembly system described above.
Les moyens de fixation du tube de guidage de gaz 20 décrits dans cette description peuvent être utilisés pour fixer n' importe quel élément tubulaire dans un équipement électrique. On peut citer, par exemple, un tube servant à commander le champ électrique ou protéger des éléments d'un champ électrique ou protéger des éléments par rapport à des ondes de surtension de transition. The gas guide tube fixing means described in this description may be used to secure any tubular member in an electrical equipment. For example, a tube can be used to control the electric field or to protect elements of an electric field or to protect elements with respect to transition overvoltage waves.

Claims

REVENDICATIONS
1. Ensemble électrique moyenne ou haute tension, monophase ou multiphase, placé dans une enceinte étanche (9), chaque ensemble de phase comportant, entre autre, une base (10) sur laquelle est fixé un tube (20), ces deux pièces ayant chacune un diamètre externe déterminé, et étant assemblées par des moyens d'assemblage, 1. Medium or high voltage electrical assembly, single phase or multiphase, placed in a sealed enclosure (9), each phase assembly comprising, inter alia, a base (10) on which is fixed a tube (20), these two parts having each having a determined external diameter, and being assembled by means of assembly,
caractérisé en ce que les moyens d'assemblage sont internes, c'est-à-dire que leur diamètre d'encombrement maximal est inférieur au diamètres externes déterminés de la base (10) et du tube (20), de manière à ce que chaque ensemble de phase présente une surface externe lisse, sans encombrement dépassant de la surface de ces éléments, et en ce que les moyens d'assemblage sont constitués, entre autres, par un élément d'assemblage mâle fixé sur un premier des deux éléments que sont le tube (20) et la base (10) et dont le diamètre externe est inférieur au diamètre du premier élément sur lequel il est utilisé pour être introduit dans un élément d'assemblage femelle placé sur le deuxième des éléments que sont la base (10) et le tube (20) et dont le diamètre interne est très légèrement inférieur au diamètre externe de l'élément d'assemblage mâle, avant montage, de façon à constituer un assemblage par emmanchement à force permettant d'obtenir un ajustement très serré.  characterized in that the assembly means are internal, that is to say that their maximum overall diameter is smaller than the determined external diameters of the base (10) and the tube (20), so that each phase assembly has a smooth external surface, without bulk protruding beyond the surface of these elements, and in that the assembly means are constituted, inter alia, by a male connecting element fixed on a first of the two elements that are the tube (20) and the base (10) and whose outer diameter is smaller than the diameter of the first element on which it is used to be introduced into a female connecting element placed on the second of the elements that are the base ( 10) and the tube (20) and whose internal diameter is very slightly less than the external diameter of the male connecting element, before assembly, so as to constitute a force fit assembly to obtain an very tight.
2. Ensemble selon la revendication 1, caractérisé en ce que l'élément d'assemblage mâle est fixé sur le tube et en ce que l'élément d'assemblage femelle est fixé sur la base (10) . 2. An assembly according to claim 1, characterized in that the male connecting element is fixed on the tube and in that the female connecting element is fixed on the base (10).
3. Ensemble selon la revendication 2, caractérisé en ce que le tube est un tube de guidage de gaz (20) . 3. The assembly of claim 2, characterized in that the tube is a gas guide tube (20).
4. Ensemble selon la revendication 1, caractérisé en ce que les moyens d'assemblage, pour chaque phase, sont complétés de moyens d ' encliquetage constitués sur l'élément d'assemblage mâle et l'élément d'assemblage femelle, en partant de leur extrémité d'assemblage, d'une saillie (13, 23) cylindrique suivie d'une rainure (12, 24) cylindrique, le diamètre initial de la saillie (13, 23) de chacun des deux éléments étant, avant montage, légèrement supérieur au diamètre de la rainure (12, 24) de l'autre élément et dans laquelle elle est destinée à être logée, de manière à réaliser un assemblage par emmanchement à force ou par ajustement très serré, une fois la base (10) et le tube de guidage de gaz (20) assemblés. 4. An assembly according to claim 1, characterized in that the assembly means, for each phase, are supplemented with latching means formed on the male assembly element and the female assembly element, starting from their assembly end, a protrusion (13, 23) cylindrical followed by a groove (12, 24) cylindrical, the initial diameter of the projection (13, 23) of each of the two elements being, before assembly, slightly greater than the diameter of the groove (12, 24) of the other element and in which it is intended to be accommodated, so as to effect a force-fit or very tight fitting connection, once the base (10) and the gas guide tube (20) assembled.
5. Ensemble selon la revendication 4, caractérisé en ce que les extrémités d'assemblage des éléments d'assemblage mâle et femelle possèdent chacun un chanfrein (14, 22) pour faciliter le montage. 5. The assembly of claim 4, characterized in that the assembly ends of the male and female assembly elements each have a chamfer (14, 22) to facilitate assembly.
6. Ensemble selon la revendication 1, caractérisé en ce qu'il comprend trois phases. 6. The assembly of claim 1, characterized in that it comprises three phases.
7. Ensemble selon l'une des revendications précédentes, qui s'applique à un disjoncteur (19) moyenne ou haute tension. 7. An assembly according to one of the preceding claims, which applies to a circuit breaker (19) medium or high voltage.
8. Ensemble selon la revendication 5, caractérisé en ce que le tube de guidage de gaz (20) ne possède pas de rainures ou de fentes longitudinales au niveau de la saillie (23) et de la rainure (24) . 8. The assembly of claim 5, characterized in that the gas guide tube (20) has no grooves or longitudinal slots at the projection (23) and the groove (24).
PCT/EP2011/057555 2010-05-11 2011-05-10 Fixing of a medium- or high-voltage electrical apparatus on a base by force fitting WO2011141480A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH02298/12A CH705264B1 (en) 2010-05-11 2011-05-10 Attaching an average or high voltage electric apparatus on a base by force fitting.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1053651A FR2960092B1 (en) 2010-05-11 2010-05-11 ATTACHING A MEDIUM OR HIGH VOLTAGE ELECTRICAL APPARATUS TO A BASE BY FORCE-CONNECTION
FR1053651 2010-05-11

Publications (1)

Publication Number Publication Date
WO2011141480A1 true WO2011141480A1 (en) 2011-11-17

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PCT/EP2011/057555 WO2011141480A1 (en) 2010-05-11 2011-05-10 Fixing of a medium- or high-voltage electrical apparatus on a base by force fitting

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Country Link
CH (1) CH705264B1 (en)
FR (1) FR2960092B1 (en)
WO (1) WO2011141480A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101487079B1 (en) 2013-04-05 2015-01-27 포항공과대학교 산학협력단 Electrode for lithium secondary battery, lithium secondary battery using the same and fabrication method thereof

Citations (6)

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Publication number Priority date Publication date Assignee Title
FR2154514A1 (en) * 1971-09-30 1973-05-11 Siemens Ag
FR2295549A1 (en) * 1974-12-20 1976-07-16 Sprecher & Schuh Ag Electrical equip. protected from adverse effects of arcing or discharge - from plastic moulding contg. special glass filler in inert atmos
US4616856A (en) 1985-04-25 1986-10-14 S&C Electric Company Nozzle and retaining arrangement
CH660813A5 (en) * 1982-01-29 1987-06-15 Sprecher & Schuh Ag Contact piece for an electrical high-voltage circuit breaker
EP0588709A1 (en) 1992-09-18 1994-03-23 Gec Alsthom T Et D Sa Circuit breaker with heat shrunk fixed elements
FR2718281A1 (en) * 1994-03-30 1995-10-06 Gec Alsthom T & D Sa High or medium voltage circuit breaker with blow out coil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2154514A1 (en) * 1971-09-30 1973-05-11 Siemens Ag
FR2295549A1 (en) * 1974-12-20 1976-07-16 Sprecher & Schuh Ag Electrical equip. protected from adverse effects of arcing or discharge - from plastic moulding contg. special glass filler in inert atmos
CH660813A5 (en) * 1982-01-29 1987-06-15 Sprecher & Schuh Ag Contact piece for an electrical high-voltage circuit breaker
US4616856A (en) 1985-04-25 1986-10-14 S&C Electric Company Nozzle and retaining arrangement
EP0588709A1 (en) 1992-09-18 1994-03-23 Gec Alsthom T Et D Sa Circuit breaker with heat shrunk fixed elements
FR2718281A1 (en) * 1994-03-30 1995-10-06 Gec Alsthom T & D Sa High or medium voltage circuit breaker with blow out coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101487079B1 (en) 2013-04-05 2015-01-27 포항공과대학교 산학협력단 Electrode for lithium secondary battery, lithium secondary battery using the same and fabrication method thereof

Also Published As

Publication number Publication date
CH705264B1 (en) 2015-12-15
FR2960092B1 (en) 2013-06-28
FR2960092A1 (en) 2011-11-18

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