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WO2007082399A1 - Chambre de coupure pour un disjoncteur à haute tension à isolation gazeuse - Google Patents

Chambre de coupure pour un disjoncteur à haute tension à isolation gazeuse Download PDF

Info

Publication number
WO2007082399A1
WO2007082399A1 PCT/CH2007/000012 CH2007000012W WO2007082399A1 WO 2007082399 A1 WO2007082399 A1 WO 2007082399A1 CH 2007000012 W CH2007000012 W CH 2007000012W WO 2007082399 A1 WO2007082399 A1 WO 2007082399A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching chamber
piston
wall
mounting unit
gas
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.)
Ceased
Application number
PCT/CH2007/000012
Other languages
German (de)
English (en)
Inventor
Martin Kriegel
Markus Vestner
Olaf Hunger
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.)
ABB Technology AG
Original Assignee
ABB Technology 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36583197&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2007082399(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Technology AG filed Critical ABB Technology AG
Publication of WO2007082399A1 publication Critical patent/WO2007082399A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the present invention relates to a switching chamber for a gas-insulated high-voltage switch according to the preamble of claim 1.
  • the invention also relates to a switch with such a switching chamber.
  • a switching chamber of the aforementioned type is generally used in gas-insulated circuit breakers in the voltage range of about 70 kV and for turn-off of more than 10 kA and is with an arc extinguishing properties having insulating gas, such as based on sulfur hexafluoride and / or nitrogen and / or carbon dioxide, in the generally filled up to a few bar pressure.
  • insulating gas such as based on sulfur hexafluoride and / or nitrogen and / or carbon dioxide
  • Switching arc can be used. If this gas exits the switching chamber, a gas chamber surrounding the switching chamber as well as insulators involved in the construction and in the mounting of the chamber can be subjected to excessive dielectric stress. Therefore, the hot arc gases are previously cooled in dielectrically uncritical spaces of the switching chamber. When switching small currents, the accumulating amount of arc gas to extinguish the switching arc is generally not sufficient. Therefore, a Blashne for generating quenching gas is provided, which is generally designed as a piston-cylinder compression device. -
  • a switching chamber of the type mentioned is described in EP1 403 891 A1.
  • This switching chamber has a discharge space, which has an open Pipe section of a tubular arc-shaped contact of the switching chamber surrounds can explode explosively through the hot arc gas formed when switching off a large short-circuit current from the switching arc.
  • the exhaust gas arc is calmed. This improves the dielectric properties of the gas.
  • the dielectric properties of the gas flowing out of the outflow space are further improved.
  • the gas can then be safely guided into a gas space which is highly dielectrically loaded and which surrounds the switching chamber.
  • this switching chamber contains a piston-cylinder compression device. In this compression device, compressed quenching gas is formed, with which a low-energy switching arc formed when a small current is switched off can be successfully blown.
  • the object is to provide a switching chamber of the type mentioned, which is characterized by a simple 'structure and can be manufactured inexpensively.
  • the piston of the compression device is held on the wall of the outflow space and the wall and the piston are part of a mounting unit attached to the housing of the switching chamber.
  • the mounting unit and the function of conducting current with the aid of then acting as an electrical contact between the mounting unit and arc guide element of the sliding can be achieved. Since all these functions are brought together in a single assembly unit, the manufacture of the switching chamber according to the invention is much easier.
  • the mounting unit can be easily prefabricated outside the switching chamber and subsequently easily fixed in the housing of the switching chamber with low assembly costs.
  • the piston is held on a tapered portion of the wall of the outflow cavity. It can then be arranged on a direct action of the hot exhaust gas withdrawn portion of the piston, a control valve, which favors the circulation of the provided in the switching chamber insulating gas when closing the switching chamber.
  • the mounting unit can be easily and inexpensively prefabricated when the piston is molded into the mounting unit.
  • the mounting unit With the mounting unit additional functions are achieved when it carries two guide elements of the sliding guide for the tubular arcing contact, of which a first, if necessary, the power transmission of the
  • Mounting unit can serve on the tubular arcing contact.
  • the mounting unit can carry at least one seal shielding the outflow space.
  • at least one seal of a compression volume of the compression device may be provided on the jacket surface of the piston and the second guide element may be provided on an inner side of the piston facing the tubular arc.
  • the mounting unit on two releasably interconnected moldings, of which the first forms the wall of the Anströmraums and the piston of the compression device and the second is formed electrically conductive and carries the first guide element.
  • a secure mounting of such a mounting unit in the switching chamber is ensured if one of the two molded parts is mounted on a molded-on switching chamber housing the switching chamber or rigidly connected thereto flange and connected non-positively with the flange.
  • the second mold part is clamped by means of a screw connection between the flange and the first mold part.
  • the single figure shows a plan view of a guided along an axis section through a portion of a switching chamber according to the invention, in which the above half of the axis of an axially symmetric contact arrangement of the switching chamber is closed and the half located below the axis opened during a turn-off becomes.
  • the switching chamber shown in the single figure is part of a high voltage circuit breaker and can be used for example in a high voltage network with a rated voltage of 250 kV.
  • This chamber contains a filled with a compressed insulating gas, such as based on sulfur hexafluoride or a sulfur hexafluoride gas mixture filled and largely tubular housing 1 and a received from the switching chamber housing 1 and largely axially symmetrical contact arrangement 2.
  • the contact assembly 2 has two arcing contacts 3, 4 of which the arcing contact 3 is arranged to be movable along the axis of symmetry 5 and the arcing contact 4 is held stationary in the housing 1.
  • the contact 4 does not have to necessarily fixed, it may also be designed to be movable.
  • the two arcing contacts are coaxially covered by an insulating nozzle 6.
  • the reference numerals 7 and 8 designate two tubular rated current contacts, one of which, namely 7, is rigidly and electrically conductively connected to the arcing contact 3 by means of a cylinder bottom 9.
  • the other rated current contact, namely 8, is electrically conductively connected to the arcing contact 4 via an unillustrated connecting element.
  • the rated current contact 7 forms the outer edge! a filled with insulating gas, hollow cylinder-shaped volume, the inner wall of the arc contact 3, the right end wall of the insulating 6 and the left end wall of a fixed, annular piston 10 of a compression device 11 is formed.
  • the volume is divided by the cylinder bottom 9 in a constant volume containing heating volume 12 and a variable volume containing compression volume 13. When switched off, the heating volume 12 communicates with one
  • the compression volume 13 communicates via a non-illustrated in the cylinder bottom 9, not shown check valve with the heating volume 12 as soon as the pressure in the compression volume 13 is higher than in the heating volume 12.
  • the piston 10 is held on an outer wall 15 of a toroidal outflow chamber 16.
  • the holding force is obviously achieved in that the piston 10 and the wall 15 are integrated into a production-technically advantageous molding 17.
  • the holding force can also be achieved by a connecting element, such as a screw or press connection.
  • the piston 10 carries in coaxial arrangement on its inner side at least one annular guide member 18 and on its lateral surface at least one annular seal 19.
  • the outflow chamber 16 has constant volume and is through the wall 15 to the outside and through the arcing contact 3 and a molded part 20 of electrically conductive material limited to the inside- To the left, the discharge space 16 is largely limited by the mold parts 17, 20 and to the right by a tapered portion 21 of the wall 15 and a guide member 18 holding portion of the piston 10.
  • the outflow space 16 surrounds the tubular arcing contact 3 in a contact tube section, in FIG the at least one gas passage 22 is formed in the pipe wall. in the wall
  • the exhaust space is limited by the switching chamber housing 1 to the outside and includes the outflow chamber 16 completely. To the outside, it communicates via openings 34 with a volume of gas filled with insulating gas, which is heavily loaded with dielectric during operation of a switch containing the switching chamber and contains dielectrically highly stressed insulators.
  • To the right of the exhaust space 24 is limited by one of the leadership of the rated current contact 7 annular approach to the switching chamber housing 1 and to the left by a molded on Heidelberggephase 1 or rigidly attached to this with not shown connecting means flange 25.
  • the flange is on a the switching chamber housing 1 supporting Insulator 26 supported and carries on the side facing away from the support insulator 26 side of a mounting unit 27, which is fixed by means of a screw 28 on the flange 25.
  • the mounting unit 27 includes the two mold parts 17 and 20 in a coaxial arrangement, wherein the molded part 20 is arranged inside and the molded part 17 outside.
  • the molded part 20 carries an annular guide element 29, which is optionally formed from a highly electrically conductive bearing metal.
  • the guide element 29 forms with the arcing contact 3 a sliding guide. If the guide element 29 is designed to conduct current, then it can also ensure the current transition from the molded part 20 or the mounting unit 27 to the arcing contact 3.
  • the molded part 20 also carries a seal 30, which prevents in the outflow space
  • the molded part 20 includes an outer flange 31 and the molded part 17 has an inner flange 32 which is offset in the axial direction to the right with respect to its end face facing the flange 25.
  • the molded part 17 also has at its left end side female thread, which are intended to receive unspecified screws of the screw 28.
  • the rated current contact 7 acts, and the rated current contact 8 to a likewise not apparent second power connection.
  • the rated current contacts 7, 8 are opened.
  • the current commutates from the rated current contacts in a current path containing the two arcing contacts 3, 4, which now runs from the rated current contact 7, the cylinder bottom 9, the arcing contact 3 and the arcing contact 4 to the second power connection.
  • a switching arc forms, which in the
  • Arc zone 14 hot arc gas high pressure generated (lower half of the figure). Part of the hot arc gas escapes as exhaust gas into the hollow arcing contact 3 and flows through the gas passage 22 into the outflow space 16 where pressure, temperature, flow velocity and / or flow direction of the exhaust gas are changed by appropriately guiding and holding the gas flow. Gas exiting via the opening 23 into the exhaust space 24 then already has improved dielectric properties.
  • the escaping gas further regenerates and then after leaving the exhaust space 24 via the openings 34 in the surrounding gas space to a quality sufficient to the dielectrically heavily loaded gas space and provided in the gas space and the action of the gas and the action strong electrical fields exposed parts, such as the support insulator 26 or an integrated into the switching chamber housing quenching chamber insulator to avoid electrical flashovers.
  • the extinguishing gas formed in the heating volume 12 may not be sufficient for successful blowing of the switching arc.
  • extinguishing gas from the compression volume 13 is used, which was generated by compression in the compression device 11 when turned off.
  • valve 33 Another function is performed by the mounting unit by the support of a control valve 33 which is arranged on the piston 10 and controls the supply of insulating gas into the compression volume 13 when the contact arrangement 2 is closed. Because the wall 15 has a tapered section 21, the valve 33 can be arranged in an outer section of the piston 10 adjacent to the exhaust space 24 and not to the discharge space 16 become. The valve 33 is then no longer exposed to the direct action of flowing from the arcing contact 3, hot exhaust gas.
  • the two Formteil ⁇ 17 and 20 are plugged together and fixed as a mounting unit 27 on the housing flange 25 by means of the screw 28.
  • the thickness of the outer flange 31 is slightly larger than the distance of the inner flange 32 generated by the displacement of the end face of the molding 20. Therefore, the outer flange 31 is clamped in the manufacture of the screw 28 between the flange 25 and inner flange 32 and so is a rigid attachment of the mounting unit 27 reaches the switching chamber housing 1.
  • a likewise designed as a mounting unit part of the contact assembly 2, which comprises the arcing contact 3, the cylinder base 9, acting as a cylinder wall rated current contact 7 and the insulating 6, inserted from the right into the switching chamber housing 1 and in the from the Figur apparent position can be brought.
  • the production of the switching chamber can be simplified.
  • the assembly unit 27 can be advantageously prefabricated in manufacturing technology and subsequently arranged in the assembly of the switching chamber in a single assembly step on the flange 25 and fixed after assembly and adjustment of a movable parts of the contact arrangement, such as arcing contact 3 and rated current contact 7, comprehensive assembly unit on the flange 25. Due to the fact that the assembly unit 27 has two plug-in mold parts 17 and 20, certain functional parts, such as the piston 10, can be molded into the assembly unit 27 in a cost-effective casting process. In principle, this is also possible if the mounting unit 27 only contains a shaped body. But then it may be necessary to rework this shaped body by machining.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

La chambre de coupure selon l'invention est conçue pour un disjoncteur à haute tension à isolation gazeuse et comprend un boîtier (1) rempli de gaz isolant dans lequel est disposé un ensemble de contacts (2) comprenant deux contacts d'arc (3, 4) pouvant se déplacer l'un par rapport à l'autre le long d'un axe (5) et dont l'un (3) est de forme tubulaire. L'ensemble de contacts présente en outre un espace d'échappement (16) qui est situé autour du contact d'arc de forme tubulaire (3) et qui comprend une paroi (15) maintenue en position fixe ainsi qu'un dispositif de compression (11) comprenant un piston fixe (10). Le piston (10) est maintenu sur la paroi (15) de l'espace d'échappement (16). La paroi (15) et le piston (10) font partie d'une unité de montage (27) fixée au boîtier (1) de la chambre de coupure. Le regroupement des composants de l'espace d'échappement (16) et du dispositif de compression (11) dans l'unité de montage (27) permet la mise en oeuvre des différentes fonctions de l'espace d'échappement (16) et du dispositif de compression (11) avec des moyens simples et la chambre de coupure peut en outre être fabriquée da façon économique.
PCT/CH2007/000012 2006-01-23 2007-01-12 Chambre de coupure pour un disjoncteur à haute tension à isolation gazeuse Ceased WO2007082399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06405027.1 2006-01-23
EP06405027A EP1811537B1 (fr) 2006-01-23 2006-01-23 Chambre de coupure pour un disjoncteur électrique

Publications (1)

Publication Number Publication Date
WO2007082399A1 true WO2007082399A1 (fr) 2007-07-26

Family

ID=36583197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2007/000012 Ceased WO2007082399A1 (fr) 2006-01-23 2007-01-12 Chambre de coupure pour un disjoncteur à haute tension à isolation gazeuse

Country Status (4)

Country Link
EP (1) EP1811537B1 (fr)
AT (1) ATE459973T1 (fr)
DE (1) DE502006006325D1 (fr)
WO (1) WO2007082399A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208140A1 (de) * 2012-05-15 2013-11-21 Siemens Aktiengesellschaft Elektrische Kontaktanordnung
CN112600075A (zh) * 2020-10-12 2021-04-02 广西序能电气设备有限公司 一种竖直放置的活塞式灭弧装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2180492B1 (fr) 2008-10-22 2013-12-04 ABB Technology AG Chambre de commutation pour un disjoncteur haute tension et disjoncteur haute tension
FR2947377B1 (fr) * 2009-06-29 2011-07-22 Areva T & D Sa Valve a clapet de decharge destinee a decharger un gaz dielectrique entre deux volumes d'une chambre de coupure de disjoncteur haute ou moyenne tension
CN114420482B (zh) * 2022-01-06 2023-12-08 平高集团有限公司 一种隔离动触头组件及具有隔离断口的高压开关设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048456A (en) * 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
US4182942A (en) * 1976-05-04 1980-01-08 Hitachi, Ltd. Puffer-type gas-blast circuit breaker
US4229627A (en) * 1978-10-04 1980-10-21 Electric Power Research Institute, Inc. Gas puffer type current interrupter and method
EP0039096A2 (fr) * 1980-04-25 1981-11-04 BBC Aktiengesellschaft Brown, Boveri & Cie. Commutateur à piston de soufflage
US4467158A (en) * 1978-10-26 1984-08-21 Tokyo Shibaura Denki Kabushiki Kaisha Puffer type gas circuit
EP0398213A1 (fr) * 1989-05-19 1990-11-22 Gec Alsthom Sa Disjoncteur à moyenne tension à courant nominal élevé

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1403891B2 (fr) 2002-09-24 2016-09-28 ABB Schweiz AG Disjoncteur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048456A (en) * 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
US4182942A (en) * 1976-05-04 1980-01-08 Hitachi, Ltd. Puffer-type gas-blast circuit breaker
US4229627A (en) * 1978-10-04 1980-10-21 Electric Power Research Institute, Inc. Gas puffer type current interrupter and method
US4467158A (en) * 1978-10-26 1984-08-21 Tokyo Shibaura Denki Kabushiki Kaisha Puffer type gas circuit
EP0039096A2 (fr) * 1980-04-25 1981-11-04 BBC Aktiengesellschaft Brown, Boveri & Cie. Commutateur à piston de soufflage
EP0398213A1 (fr) * 1989-05-19 1990-11-22 Gec Alsthom Sa Disjoncteur à moyenne tension à courant nominal élevé

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208140A1 (de) * 2012-05-15 2013-11-21 Siemens Aktiengesellschaft Elektrische Kontaktanordnung
CN112600075A (zh) * 2020-10-12 2021-04-02 广西序能电气设备有限公司 一种竖直放置的活塞式灭弧装置

Also Published As

Publication number Publication date
EP1811537A1 (fr) 2007-07-25
ATE459973T1 (de) 2010-03-15
EP1811537B1 (fr) 2010-03-03
DE502006006325D1 (de) 2010-04-15

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