EP0126929B2 - Druckgasschalter - Google Patents

Druckgasschalter Download PDF

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Publication number
EP0126929B2
EP0126929B2 EP84104058A EP84104058A EP0126929B2 EP 0126929 B2 EP0126929 B2 EP 0126929B2 EP 84104058 A EP84104058 A EP 84104058A EP 84104058 A EP84104058 A EP 84104058A EP 0126929 B2 EP0126929 B2 EP 0126929B2
Authority
EP
European Patent Office
Prior art keywords
piston
sparking
compression chamber
contact
contact member
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
EP84104058A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0126929A3 (en
EP0126929A2 (de
EP0126929B1 (de
Inventor
Walter Egli
Klaus Prof. Dr. Ragaller
Ekkehard Dr. Schade
Roland Stelzer
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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=4245694&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0126929(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0126929A2 publication Critical patent/EP0126929A2/de
Publication of EP0126929A3 publication Critical patent/EP0126929A3/de
Application granted granted Critical
Publication of EP0126929B1 publication Critical patent/EP0126929B1/de
Publication of EP0126929B2 publication Critical patent/EP0126929B2/de
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
    • H01H33/70—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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • 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
    • H01H33/905—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 compression volume being formed by a movable cylinder and a semi-mobile piston

Definitions

  • the invention relates to a gas pressure switch according to the preambles of claims 1 and 2.
  • Such a switch is described for example in DE-A-30 17 980 or in FR-A-2 210814.
  • the switch described contains a piston-cylinder compression device for generating compressed gas.
  • the cylinder is firmly connected to a movable contact and an insulating nozzle of the switch, whereas the piston, which is slidably mounted in the cylinder in a gas-tight manner, is penetrated by the movable contact and is under the action of a prestressed spring.
  • the force of the prestressed spring is absorbed by a fixed stop which interacts with a holding part attached to the piston.
  • the force of the spring is dimensioned such that the piston remains in the idle state when it is switched off until the gas pressure acting on the piston is greater than the force of the spring. This is the case if a high gas pressure is generated by the switching arc when a short-circuit current is switched. This high gas pressure causes an increase in the compression space by displacing the piston against the force of the preloaded spring. A comparatively large volume of high-pressure compressed gas is then available for blowing the switching arc, but such a switch requires a comparatively large drive energy in order to prevent the drive from blocking when switching strong short-circuit currents. This is due to the fact that, on the one hand, a strong pressure is built up in the compression chamber when switching strong short-circuit currents, and on the other hand, this pressure acts on the drive counter to the direction of movement.
  • the switch according to the invention is characterized in that, despite a modest drive for the moving contact, both for extinguishing large and small switching arcs, it has sufficient amounts of extinguishing gas suitable for the size of the switching arc to be extinguished.
  • FIGS. 1, 3 and 4 are shown in the left half of the figure in the switch-off and in the right half of the figure in each case in the switched-on position.
  • the same parts are also provided with the same reference symbols in all switches.
  • the compressed gas switch shown in FIG. 1 has a fixed contact 1 with a nominal current contact 2 and a burn-up contact 3 and a movable contact 4 with a nominal current contact 5 and a burn-off contact 6.
  • the erosion contacts 3 and 6 are nozzle-shaped and are mounted on contact tubes 7 and 8, respectively.
  • the erosion contact 3 of the fixed contact 1 has an outer diameter corresponding approximately to the inside diameter of the nozzle-shaped erosion contact 6 of the movable contact 4, so that the erosion contact 3 can penetrate into the interior of the erosion contact 6 in the switched-on position (shown in the right half of FIG. 1) ).
  • the erosion contact 6 of the movable contact piece 4 is surrounded at a distance by an insulating nozzle 9.
  • the outer surface of the insulating nozzle 9 is limited by the nominal current contact 5.
  • the compression space 13 is of a cylindrical housing 14 made of insulating material, such as glass fiber-reinforced plastic or porcelain, for receiving the contact pieces 1 and 4, the contact tube 8, the piston 12 and another piston 15 limited. Both pistons 12 and 15 can slide in a sealing manner in the axial direction on the inner surface of the housing 14. On the inner surface of the housing 14 there is an annular stop 16, against which the piston 15 bears with its surface facing the compression space 13. A compression spring 17 is supported on the surface of the piston 15 facing away from the compression space 13, the end of which is facing away from the piston 15 is held by a shoulder 18 provided on the inner surface of the housing 14. A stop 19 is provided on the contact tube 8, against which, in the switched-on position, the piston 15 bears with its surface facing away from the compression space 13. In the switched-on position, the piston 15 therefore acts like a fixed bottom of the compression space 13.
  • the housing 14 is filled with an insulating gas, such as sulfur hexafluoride, of preferably a few bar pressure.
  • the switching arc clogs the nozzle openings of the erosion contacts 3 and 6 during the high current phase and the pressure of the insulating gas in the compression space 13 is therefore considerably increased by heating.
  • a predeterminable pressure value of the insulating gas located in the compression space 13 which is, for example, 0.5-1 bar higher than the pressure value of the insulating gas in the switch-on position, the piston 15 is displaced downward against the force of the spring 17 and, as a result, the compression space when the gas pressure is increased 13 enlarged (curve section in Fig. 2) until its volume remains constant due to the impact of the piston 15 on the stop 19 (curve section 111).
  • the switch according to the invention therefore behaves like an arrangement in which the extinguishing gas is stored in a chamber with a constant volume.
  • the drive only requires the force required to tension the spring 17, which is approximately of the same order of magnitude as the force required for the cold gas pressure build-up in the compression space 13.
  • the switch according to the invention therefore behaves like a blow piston switch.
  • the drive only has to exert the force necessary for compressing the insulating gas provided in the compression space 13, but this is low because of the weak insulating gas flows required for successfully blowing the arcs of small currents.
  • the shoulder 18 is attached to the contact tube 8 instead of to the housing 14.
  • the force of the spring 17 is now absorbed by the contact tube 8.
  • the piston 15 can slide into a cylinder 20 in a sealing manner.
  • the cylinder 20 is connected in a suitable manner to a cylinder base 21 fastened to the switching element 4, which is penetrated by the channel 10 entering the compression space 13.
  • the piston 15 is fixed by a stop 22 held in a suitable manner by the housing 14.
  • the stop 22 is held, for example, by a rod 23 which penetrates the piston 15 in a sealing manner and whose end facing away from the stop 22 is mounted on a shoulder 24 fastened to the housing 14.
  • the piston 15 When switching large currents, the piston 15 is removed from the stop 22 against the force of the spring 17 after the separation of the erosion contacts 3 and 6, as in the embodiments described above. Here he temporarily occupies the position shown in dashed lines in the left half of FIG. 4. According to the embodiment according to FIG. 3, the drive of the switching element 4 is considerably relieved in this switch when large currents are switched off.
  • this switch has the advantage that the use of a cylinder connected to the switching element 4 saves a piston and the compression space 13 can be designed independently of the housing 14.

Landscapes

  • Circuit Breakers (AREA)
EP84104058A 1983-05-31 1984-04-11 Druckgasschalter Expired - Lifetime EP0126929B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2968/83 1983-05-31
CH296883 1983-05-31

Publications (4)

Publication Number Publication Date
EP0126929A2 EP0126929A2 (de) 1984-12-05
EP0126929A3 EP0126929A3 (en) 1986-07-09
EP0126929B1 EP0126929B1 (de) 1989-08-02
EP0126929B2 true EP0126929B2 (de) 1993-06-23

Family

ID=4245694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104058A Expired - Lifetime EP0126929B2 (de) 1983-05-31 1984-04-11 Druckgasschalter

Country Status (4)

Country Link
US (1) US4556767A (ja)
EP (1) EP0126929B2 (ja)
JP (1) JPH0664975B2 (ja)
DE (2) DE3322597A1 (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618345A1 (de) * 1986-05-30 1987-12-03 Siemens Ag Elektrischer druckgasschalter
US4780581A (en) * 1987-10-30 1988-10-25 Rte Corporation Suicide switch/interrupter with variable volume chamber and puffer action
CH679095A5 (ja) * 1989-06-22 1991-12-13 Sprecher Energie Ag
DE3930548C2 (de) * 1989-09-13 1994-05-19 Licentia Gmbh Druckgasschalter
FR2660792B1 (fr) * 1990-04-04 1992-06-12 Alsthom Gec Disjoncteur a haute ou moyenne tension a contacts d'arc en bout.
DE4025553C2 (de) * 1990-08-11 1994-03-10 Licentia Gmbh Druckgasschalter
FR2683383B1 (fr) * 1991-11-04 1993-12-31 Gec Alsthom Sa Disjoncteur a haute ou moyenne tension a triple mouvement.
FR2715499B1 (fr) * 1994-01-25 1996-03-15 Gec Alsthom T & D Sa Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement.
DE4402935A1 (de) * 1994-02-01 1995-08-03 Abb Patent Gmbh Kontaktsystem für einen Hochspannungsleistungsschalter
GB9601075D0 (en) * 1996-01-19 1996-03-20 Alliedsignal Ltd Pretensioner
FR2748598B1 (fr) * 1996-05-13 1998-06-05 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage
FR2756413B1 (fr) * 1996-11-28 1998-12-31 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile
FR2761520B1 (fr) * 1997-03-27 1999-05-14 Gec Alsthom T & D Sa Disjoncteur a moyenne tension a faible energie de manoeuvre
JP2008210710A (ja) * 2007-02-27 2008-09-11 Mitsubishi Electric Corp 電力用ガス遮断器
FR2957451A1 (fr) * 2010-03-09 2011-09-16 Areva T & D Sas Interrupteur electrique haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance
KR101786521B1 (ko) 2013-07-02 2017-10-18 엘에스산전 주식회사 초고압 차단기

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913559A (en) * 1958-01-30 1959-11-17 Westinghouse Electric Corp Fluid-blast circuit interrupter
US3331935A (en) * 1964-12-21 1967-07-18 Westinghouse Electric Corp Gas-blast circuit breaker having dual piston means providing double-acting puffer arrangement
DE1765153A1 (de) * 1967-04-13 1971-07-01 Magrini Fab Riun Scarpa Selbstloeschender elektrischer Gasdruckschalter mit Schaltkammer mit einer Muendungsoeffnung
DE2108871B2 (de) * 1971-02-25 1980-05-29 Calor-Emag Elektrizitaets-Aktiengesellschaft, 4030 Ratingen Druckgasschalter mit einem geschlossenen Gaskreis
JPS5347909B2 (ja) * 1972-12-08 1978-12-25
JPS4981874A (ja) * 1972-12-14 1974-08-07
DE2347605A1 (de) * 1973-09-18 1975-03-20 Siemens Ag Elektrischer druckgasschalter
US3914569A (en) * 1974-05-02 1975-10-21 Ite Imperial Corp Puffer interrupter with downstream initiated arc
FR2291601A1 (fr) * 1974-11-15 1976-06-11 Alsthom Cgee Dispositif de coupure a autocompression
JPS51131663U (ja) * 1975-04-16 1976-10-23
CH590552A5 (ja) * 1975-09-26 1977-08-15 Sprecher & Schuh Ag
JPS5323553U (ja) * 1976-08-05 1978-02-28
DE2803303A1 (de) * 1978-01-26 1979-08-02 Licentia Gmbh Autopneumatischer leistungsschalter
JPS55115228A (en) * 1979-02-28 1980-09-05 Tokyo Shibaura Electric Co Buffer type gas breaker
CH642481A5 (de) * 1979-11-22 1984-04-13 Sprecher & Schuh Ag Druckgasschalter.
US4445018A (en) * 1982-01-07 1984-04-24 Mcgraw-Edison Company Energy efficient floating head puffer interrupter
US4465910A (en) * 1982-09-20 1984-08-14 Mcgraw-Edison Company Self-generating gas flow interrupter

Also Published As

Publication number Publication date
EP0126929A3 (en) 1986-07-09
EP0126929A2 (de) 1984-12-05
DE3479265D1 (en) 1989-09-07
US4556767A (en) 1985-12-03
JPS59228328A (ja) 1984-12-21
DE3322597A1 (de) 1984-12-06
EP0126929B1 (de) 1989-08-02
JPH0664975B2 (ja) 1994-08-22

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