EP0789374B1 - Remote controlled pressure relief device for the filling gas of a circuit breaker - Google Patents

Remote controlled pressure relief device for the filling gas of a circuit breaker Download PDF

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Publication number
EP0789374B1
EP0789374B1 EP97400082A EP97400082A EP0789374B1 EP 0789374 B1 EP0789374 B1 EP 0789374B1 EP 97400082 A EP97400082 A EP 97400082A EP 97400082 A EP97400082 A EP 97400082A EP 0789374 B1 EP0789374 B1 EP 0789374B1
Authority
EP
European Patent Office
Prior art keywords
membrane
wall
circuit breaker
depressurizer
filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97400082A
Other languages
German (de)
French (fr)
Other versions
EP0789374A1 (en
Inventor
Henry Ardyna
Gérard Drevon
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
GEC Alsthom T&D SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0789374A1 publication Critical patent/EP0789374A1/en
Application granted granted Critical
Publication of EP0789374B1 publication Critical patent/EP0789374B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H2033/568—Gas reservoirs with overpressure release, e.g. rupture membranes

Definitions

  • the present invention relates to a device for pressure relief remote from the filling gas of a breaker.
  • a circuit gas filling pressure relief comprising a switching chamber communicating with a block filling with dielectric gas and carried by a support frame, pressure relief device comprising a orifice passing through a wall of the circuit breaker and connecting the interior of the switch-off chamber and the exterior of the circuit breaker and a membrane closing this opening so waterproof and fixed to said wall by fixing members.
  • this membrane commonly called rupture is arranged at one end of the chamber cut-off, at the top in the case of a cut-off chamber vertical. It is designed to burst when the internal pressure of the switching chamber reaches a certain value, corresponding to an operation faulty circuit breaker causing gas to heat up dielectric. This faulty operation is so general linked to a circuit breaker opening fault. The elimination of the membrane is therefore carried out automatically without human intervention.
  • circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane.
  • circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane.
  • circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane.
  • circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane.
  • circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane.
  • the invention provides a device for discharging pressure allowing manual intervention to dielectric gas pressure discharge, i.e. a dielectric gas pressure relief possible in all cases deemed necessary, and this is safe for the operator.
  • the device according to the invention includes a member for eliminating said controlled membrane remotely.
  • Said elimination organ may consist of an organ of destruction of said membrane or into an organ of destruction of said fixing members.
  • said organ for destroying the wall may consist of at least one fusion arrangement partial of said membrane or in a needle arrangement striker mounted opposite said membrane.
  • said organ for destroying fasteners may consist of an arrangement of fusion of these.
  • the device is installed on the filling block.
  • Figure 1 is a front view of a circuit breaker conventional with vertical breaking chamber.
  • Figures 2 to 4 are views in horizontal section of the filling block of the circuit breaker of Figure 1, equipped of a device according to the invention.
  • a conventional circuit breaker with breaking chamber vertical as described in Figure 1 has a support frame 1 on which a support case 2 is mounted in which is housed the transmission mechanism of control of the breaking chamber 3 supported by insulators 4.
  • a grouping cabinet 5 contains the low voltage components, for example the monitoring.
  • the block is arranged filling 6 as shown in FIGS. 2 to 4.
  • This filling block 6 has a passage 11 for the dielectric gas filling the breaking chamber 3 with a first mouth 7 intended to receive a filling system, a second mouth 8 intended for receive a densistat type control device or pressure gauge, a third mouth 9 intended to receive an isolation valve allowing isolation of the chamber switch-off 3 in case of dismantling of the recording equipment and a fourth mouth 10 for communication with the breaking chamber 3.
  • the gas pressure relief device filling comprises an orifice 12 passing through a wall of the filling block 6, connecting the interior of passage 11 and the outside and closed by a membrane fixed to the wall by fixing members, for example fixing screws, watertight thanks to seals.
  • the device pressure relief device includes a device for eliminating the remote-controlled membrane, three variants of which are shown in Figures 2 to 4.
  • the elimination organ may consist of a destruction of said membrane.
  • a plate 16 fixed to the wall by screws 14, 15 and having a through bore 17.
  • This bore 17 is closed by a membrane 13 made of fusible material, for example of fusible metal such as lead, in which is embedded a resistor connected to a remote control system. By connecting this resistor, the membrane 13 melts and is eliminated thereby allowing gas pressure discharge dielectric for filling through the bore 17.
  • the wall's destruction organ consists of a firing pin arrangement mounted opposite a membrane 13 'formed in a plate 16' fixed on the wall by screws 14 ', 15'.
  • the striker needle arrangement comprising a housing 20, for example cylindrical, in which is housed a needle 21 slidably mounted in a cylinder 23 fixedly mounted in the housing 20, biased by a compression spring 22 and retained in the non-active state by a retaining pawl retractable housed in cylinder 23.
  • the elimination organ can also consist of a member for destroying fixing members.
  • a plate or membrane 13 "closes the orifice 12 and is fixed to the wall by rivets 14 "and 15" in fusible material, by example in fusible metal such as lead, and in which a resistance is embedded connected to a control system remotely. From this system, by connecting the resistors, the 14 ", 15" rivets are melted, releasing the 13 "plate which falls and releases the orifice 12 through which the dielectric filling gas is evacuated.

Abstract

The gas pressure discharge device for filling a circuit breaker comprises a cut-off chamber communicating directly with a filling block (6) containing dielectric gas. This is carried by a support frame. The pressure discharge device comprises an orifice (12) passing through a wall of the circuit breaker and connecting the inside of the cut-off chamber (3) to the outside of the circuits breaker. A membrane (13) covers this orifice to form a seal, and is held to the wall by fixings (14,15). A spring loaded device is provided with a sharp point to puncture this membrane when gas is required, the device being remotely controlled.

Description

La présente invention se rapporte à un dispositif de décharge de pression à distance du gaz de remplissage d'un disjoncteur.The present invention relates to a device for pressure relief remote from the filling gas of a breaker.

Elle concerne plus précisément un dispositif de décharge de pression du gaz de remplissage d'un disjoncteur comportant une chambre de coupure communiquant avec un bloc de remplissage en gaz diélectrique et porté par un châssis-support, dispositif de décharge de pression comprenant un orifice traversant une paroi du disjoncteur et reliant l'intérieur de la chambre de coupure et l'extérieur du disjoncteur et une membrane obturant cet orifice de façon étanche et fixée à ladite paroi par des organes de fixation.More specifically, it relates to a circuit gas filling pressure relief comprising a switching chamber communicating with a block filling with dielectric gas and carried by a support frame, pressure relief device comprising a orifice passing through a wall of the circuit breaker and connecting the interior of the switch-off chamber and the exterior of the circuit breaker and a membrane closing this opening so waterproof and fixed to said wall by fixing members.

De façon classique, sur les disjoncteurs conventionnels, cette membrane couramment appelée disque de rupture est disposée à une extrémité de la chambre de coupure, au sommet dans le cas d'une chambre de coupure verticale. Elle est conçue de façon à éclater, lorsque la pression interne de la chambre de coupure atteint une certaine valeur, correspondant à un fonctionnement défectueux du disjoncteur entraínant un échauffement du gaz diélectrique. Ce fonctionnement défectueux est de façon générale lié à un défaut d'ouverture du disjoncteur. L'élimination de la membrane se réalise donc automatiquement sans intervention humaine.Conventionally, on circuit breakers conventional, this membrane commonly called rupture is arranged at one end of the chamber cut-off, at the top in the case of a cut-off chamber vertical. It is designed to burst when the internal pressure of the switching chamber reaches a certain value, corresponding to an operation faulty circuit breaker causing gas to heat up dielectric. This faulty operation is so general linked to a circuit breaker opening fault. The elimination of the membrane is therefore carried out automatically without human intervention.

Or les disjoncteurs sont de plus en plus équipés de moyens perfectionnés de détection de défaut et de commande de coupure en cas de défaut, complétant l'utilisation d'une telle membrane. Cependant, dans certains cas, même en cas de détection de défaut et de coupure, une fois le disjoncteur hors tension, il existe dans le disjoncteur des contraintes internes qui peuvent entraíner un éclatement de la chambre de coupure.However, circuit breakers are increasingly equipped with advanced means of fault detection and control in the event of a fault, completing the use of a such a membrane. However, in some cases, even if fault and cutout detection, once the circuit breaker de-energized, there are constraints in the circuit breaker which can cause the chamber to burst cutoff.

L'invention propose un dispositif de décharge de pression permettant par une intervention manuelle la décharge de pression du gaz diélectrique, c'est-à-dire une décharge de pression du gaz diélectrique possible dans tous les cas jugés nécessaires, et ceci sans danger pour l'opérateur.The invention provides a device for discharging pressure allowing manual intervention to dielectric gas pressure discharge, i.e. a dielectric gas pressure relief possible in all cases deemed necessary, and this is safe for the operator.

Pour ce faire, le dispositif conforme à l'invention comporte un organe d'élimination de ladite membrane commandé à distance.To do this, the device according to the invention includes a member for eliminating said controlled membrane remotely.

Ledit organe d'élimination peut consister en un organe de destruction de ladite membrane ou en un organe de destruction desdits organes de fixation.Said elimination organ may consist of an organ of destruction of said membrane or into an organ of destruction of said fixing members.

Dans le premier cas, ledit organe de destruction de la paroi peut consister en un agencement de fusion au moins partiel de ladite membrane ou en un agencement de pointeau percuteur monté en vis-à-vis de ladite membrane.In the first case, said organ for destroying the wall may consist of at least one fusion arrangement partial of said membrane or in a needle arrangement striker mounted opposite said membrane.

Dans le second cas, ledit organe de destruction des organes de fixation peut consister en un agencement de fusion de ceux-ci.In the second case, said organ for destroying fasteners may consist of an arrangement of fusion of these.

Avantageusement, le dispositif est installé sur le bloc de remplissage.Advantageously, the device is installed on the filling block.

L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant qu'un mode de réalisation préféré de l'invention.The invention is described below in more detail at using figures representing only one embodiment preferred of the invention.

La figure 1 est une vue de face d'un disjoncteur conventionnel à chambre de coupure verticale.Figure 1 is a front view of a circuit breaker conventional with vertical breaking chamber.

Les figures 2 à 4 sont des vues en coupe horizontale du bloc de remplissage du disjoncteur de la figure 1, équipé d'un dispositif conforme à l'invention.Figures 2 to 4 are views in horizontal section of the filling block of the circuit breaker of Figure 1, equipped of a device according to the invention.

Un disjoncteur conventionnel à chambre de coupure verticale tel que décrit sur la figure 1 comporte un châssis-support 1 sur lequel est monté un carter-support 2 dans lequel est logé le mécanisme de transmission de commande de la chambre de coupure 3 supporté par des isolateurs 4. Une armoire de regroupement 5 contient les éléments basse tension, par exemple les organes de surveillance. A conventional circuit breaker with breaking chamber vertical as described in Figure 1 has a support frame 1 on which a support case 2 is mounted in which is housed the transmission mechanism of control of the breaking chamber 3 supported by insulators 4. A grouping cabinet 5 contains the low voltage components, for example the monitoring.

Dans ou sur le carter-support 2, est disposé le bloc de remplissage 6 tel que représenté sur les figures 2 à 4.In or on the support casing 2, the block is arranged filling 6 as shown in FIGS. 2 to 4.

Ce bloc de remplissage 6 comporte un passage 11 pour le gaz diélectrique de remplissage de la chambre de coupure 3 avec une première embouchure 7 destinée à recevoir un système de remplissage, une deuxième embouchure 8 destinée à recevoir un appareil de contrôle de type densistat ou manomètre, une troisième embouchure 9 destinée à recevoir une vanne d'isolement permettant l'isolement de la chambre de coupure 3 en cas de démontage de l'appareil de contrôle et une quatrième embouchure 10 de communication avec la chambre de coupure 3.This filling block 6 has a passage 11 for the dielectric gas filling the breaking chamber 3 with a first mouth 7 intended to receive a filling system, a second mouth 8 intended for receive a densistat type control device or pressure gauge, a third mouth 9 intended to receive an isolation valve allowing isolation of the chamber switch-off 3 in case of dismantling of the recording equipment and a fourth mouth 10 for communication with the breaking chamber 3.

Le dispositif de décharge de pression du gaz de remplissage comprend un orifice 12 traversant une paroi du bloc de remplissage 6, reliant l'intérieur du passage 11 et l'extérieur et obturé par une membrane fixée à la paroi par des organes de fixation, par exemple des vis de fixation, de façon étanche grâce à des joints d'étanchéité. Le dispositif de décharge de pression comporte un organe d'élimination de la membrane commandé à distance dont trois variantes sont représentées sur les figures 2 à 4.The gas pressure relief device filling comprises an orifice 12 passing through a wall of the filling block 6, connecting the interior of passage 11 and the outside and closed by a membrane fixed to the wall by fixing members, for example fixing screws, watertight thanks to seals. The device pressure relief device includes a device for eliminating the remote-controlled membrane, three variants of which are shown in Figures 2 to 4.

L'organe d'élimination peut consister en un organe de destruction de ladite membrane.The elimination organ may consist of a destruction of said membrane.

Selon la variante représentée sur la figure 2, une plaquette 16 fixée à la paroi par des vis 14, 15 et comportant un alésage traversant 17. Cet alésage 17 est obturé par une membrane 13 en matériau fusible, par exemple en métal fusible tel que le plomb, dans laquelle est noyée une résistance reliée à un système de commande à distance. Par branchement de cette résistance, la membrane 13 fond et est éliminée permettant ainsi la décharge de pression du gaz diélectrique de remplissage par l'alésage 17.According to the variant shown in Figure 2, a plate 16 fixed to the wall by screws 14, 15 and having a through bore 17. This bore 17 is closed by a membrane 13 made of fusible material, for example of fusible metal such as lead, in which is embedded a resistor connected to a remote control system. By connecting this resistor, the membrane 13 melts and is eliminated thereby allowing gas pressure discharge dielectric for filling through the bore 17.

Selon la variante représentée sur la figure 3, l'organe de destruction de la paroi consiste en un agencement de pointeau percuteur monté en vis-à-vis d'une membrane 13' formée dans une plaquette 16' fixée sur la paroi par des vis 14', 15'. Sur cette plaquette 16', est fixé l'agencement de pointeau percuteur comportant un carter 20, par exemple cylindrique, dans lequel est logé un pointeau 21 monté coulissant dans un cylindre 23 monté fixe dans le carter 20, sollicité par un ressort de compression 22 et retenu à l'état non actif par un cliquet de retenue escamotable logé dans le cylindre 23. A partir d'un système de commande à distance et par l'intermédiaire d'une bobine 25, le cliquet est escamoté, libérant le pointeau 21 qui, poussé par le ressort 22, vient percer la membrane 13' et ouvrir l'orifice 12, permettant la décharge de pression du gaz diélectrique de remplissage par l'orifice 12 et un orifice 24 réalisé dans le carter 20.According to the variant shown in FIG. 3, the wall's destruction organ consists of a firing pin arrangement mounted opposite a membrane 13 'formed in a plate 16' fixed on the wall by screws 14 ', 15'. On this 16 'plate, is fixed the striker needle arrangement comprising a housing 20, for example cylindrical, in which is housed a needle 21 slidably mounted in a cylinder 23 fixedly mounted in the housing 20, biased by a compression spring 22 and retained in the non-active state by a retaining pawl retractable housed in cylinder 23. From a system remote control and via a coil 25, the pawl is retracted, releasing the needle 21 which, pushed by the spring 22, pierces the membrane 13 'and open port 12, allowing pressure relief from dielectric gas filling through port 12 and a orifice 24 made in the casing 20.

L'organe d'élimination peut également consister en un organe de destruction des organes de fixation.The elimination organ can also consist of a member for destroying fixing members.

Selon la variante représentée sur la figure 4, une plaquette ou membrane 13" obture l'orifice 12 et est fixée à la paroi par des rivets 14" et 15" en matériau fusible, par exemple en métal fusible tel que le plomb, et dans lesquels est noyée une résistance connectée à un système de commande à distance. A partir de ce système, par branchement des résistances, les rivets 14", 15" sont fondus, libérant la plaquette 13" qui tombe et libère l'orifice 12 par lequel s'évacue le gaz diélectrique de remplissage.According to the variant shown in Figure 4, a plate or membrane 13 "closes the orifice 12 and is fixed to the wall by rivets 14 "and 15" in fusible material, by example in fusible metal such as lead, and in which a resistance is embedded connected to a control system remotely. From this system, by connecting the resistors, the 14 ", 15" rivets are melted, releasing the 13 "plate which falls and releases the orifice 12 through which the dielectric filling gas is evacuated.

A la place des rivets fusibles 14", 15", peuvent être utilisées des vis dont la destruction peut être obtenue par une charge pyrotechnique.Instead of the 14 ", 15" fusible rivets, can be used screws whose destruction can be obtained by a pyrotechnic charge.

Claims (7)

  1. A depressurizer for depressurizing the gas filling a circuit-breaker including a break chamber (3) communicating with a filler unit (6) for filling it with dielectric gas and carried by a support frame (1), which depressurizer includes:
    an orifice (12) in a wall of the circuit-breaker connecting the interior of the break chamber (3) to the exterior of the circuit-breaker, and
    a membrane (13, 13', 13") shutting off said orifice (12) in a sealed manner and fixed to said wall by fixing members,
       which device is characterized in that it includes a remote-controlled eliminator device for eliminating said membrane (13, 13', 13").
  2. A depressurizer according to claim 1, characterized in that said eliminator device is a device for destroying said membrane (13, 13").
  3. A depressurizer according to claim 1, characterized in that said eliminator device is a member for destroying said fixing members (14", 15").
  4. A depressurizer according to claim 2, characterized in that said device for destroying the wall [sic] is an arrangement for at least partly melting said membrane (13).
  5. A depressurizer according to claim 2, characterized in that said device for destroying the wall [sic] is a striker pin arrangement (21) facing said membrane (13').
  6. A depressurizer according to claim 3, characterized in that said device for destroying the fixing members (14", 15") is an arrangement for melting them.
  7. A depressurizer according to any preceding claim, characterized in that it is installed on the filler unit (6).
EP97400082A 1996-02-06 1997-01-16 Remote controlled pressure relief device for the filling gas of a circuit breaker Expired - Lifetime EP0789374B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601407A FR2744562B1 (en) 1996-02-06 1996-02-06 REMOTE PRESSURE RELIEF DEVICE FOR GAS FILLING A CIRCUIT BREAKER
FR9601407 1996-02-06

Publications (2)

Publication Number Publication Date
EP0789374A1 EP0789374A1 (en) 1997-08-13
EP0789374B1 true EP0789374B1 (en) 2002-06-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400082A Expired - Lifetime EP0789374B1 (en) 1996-02-06 1997-01-16 Remote controlled pressure relief device for the filling gas of a circuit breaker

Country Status (5)

Country Link
EP (1) EP0789374B1 (en)
AT (1) ATE218748T1 (en)
DE (1) DE69712935T2 (en)
ES (1) ES2177910T3 (en)
FR (1) FR2744562B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104637726B (en) * 2015-03-02 2016-10-26 周盈裕 Environment-friendly type list voltage breaker arc-chutes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048315B (en) * 1957-05-14 1959-01-08
CH422981A (en) * 1964-07-22 1966-10-31 Coq France Protective device for a very high voltage shielded electrical device
FR2323257A1 (en) * 1975-09-02 1977-04-01 Merlin Gerin Safety valve for pressurised high voltage enclosures - has series of gas tight compartments with separate relief valves having insulated alloy discs

Also Published As

Publication number Publication date
FR2744562A1 (en) 1997-08-08
EP0789374A1 (en) 1997-08-13
FR2744562B1 (en) 1998-02-27
DE69712935T2 (en) 2003-03-27
ES2177910T3 (en) 2002-12-16
DE69712935D1 (en) 2002-07-11
ATE218748T1 (en) 2002-06-15

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