EP0146671B1 - Druckgasschalter - Google Patents

Druckgasschalter Download PDF

Info

Publication number
EP0146671B1
EP0146671B1 EP84106283A EP84106283A EP0146671B1 EP 0146671 B1 EP0146671 B1 EP 0146671B1 EP 84106283 A EP84106283 A EP 84106283A EP 84106283 A EP84106283 A EP 84106283A EP 0146671 B1 EP0146671 B1 EP 0146671B1
Authority
EP
European Patent Office
Prior art keywords
piston
contact member
pump chamber
gas
outlet
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
Application number
EP84106283A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0146671A1 (de
Inventor
Hans-Jörg Schötzau
Renzo Coccioni
Christian Sturzenegger
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.)
General Electric Switzerland GmbH
Original Assignee
Sprecher Energie 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 Sprecher Energie AG filed Critical Sprecher Energie AG
Priority to AT84106283T priority Critical patent/ATE32286T1/de
Publication of EP0146671A1 publication Critical patent/EP0146671A1/de
Application granted granted Critical
Publication of EP0146671B1 publication Critical patent/EP0146671B1/de
Expired 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
    • H01H2033/906—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 with pressure limitation in the compression volume, e.g. by valves or bleeder openings
    • 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
    • H01H2033/908—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 using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume
    • 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 of the type mentioned in the preamble of claim 1.
  • Such a pressure gas switch is known from DE-A-3009 165, Fig. 1 and the associated description.
  • the outlet in the movable contact piece, to which the blowing nozzle is assigned is already connected to the blow-out space during a switch-off stroke if the distance between the contact pieces between which the switching arc burns corresponds approximately to the minimum extinguishing distance.
  • the pressure surge generated by the switching arc which propagated through the outlet into the pump chamber before the minimum extinguishing distance between the contact pieces was reached and thus supported the blowing effect, fizzles out into the blow-out chamber.
  • the invention is based on the object of designing a switch of the type mentioned in such a way that the pressure surge emanating from the switching arc supports the blowing through the blowing nozzle almost during the entire switch-off stroke, so that in the end the switch-off stroke is reduced to a little more than the minimum extinguishing distance can be, which also reduces the work to be done by the switch drive during the switch-off stroke, which in turn can be built more easily as a result.
  • the proposed switch has the features defined in the characterizing part of patent claim 1.
  • FIG. 1 shows a first, tubular, movable contact piece 11, to which a cylinder 13 is connected via webs 12, the outlet between the webs 12 of which is at the same time the inlet of one attached to the bottom of the cylinder 13 and the free one with a burn-off ring 14 provided end of the contact piece 11 surrounding blowing nozzle 15 forms.
  • the narrowest point 16 of this blowing nozzle which is made of a plastic or another insulating material, is located in front of the erosion ring 14.
  • the contact piece 11 slidably passes through a piston 17 to which a guide sleeve 18 which tightly surrounds the contact piece 11 is fastened or molded.
  • the piston 17 and the cylinder 13 thus delimit a pump chamber 19 which also contains extinguishing gas.
  • the first contact piece 11 is not tubular over its entire length, but only in the section 20 adjoining the erosion ring 14. At the end of this section there are radial outlets 21 which connect the interior of the section 20 with the respective surroundings of the contact piece 11.
  • a second, fixed contact piece 22 interacts, the free end of which is also provided with an erosion ring 23 and only in the fol section 24 is tubular, at the end of this section 24 there are outlets 25 which connect the interior of section 24 with the surroundings of the contact piece 22.
  • the contact piece 22 closes the blow nozzle 15 at its narrowest point 16 and also the free end of the contact piece 11.
  • the piston 17 is stationary, e.g. supported on columns 26, while the contact piece 11 and thus also the cylinder 13 and the blowing nozzle are movable.
  • the contact piece 11 is coupled to a drive, not shown, with which the contact piece 11 can be displaced in the direction of the double arrow 27 between the on and the off position.
  • the contact piece 22 is also arranged in a stationary manner.
  • the connections 28 and 29 leading to the contact pieces 11 and 22 are indicated only schematically, the connection 28 to the movable contact pieces 11 also being provided with a sliding contact 30.
  • the volume of the pump chamber 19 in the switch-off position is still considerable, since it is still about half to a third of its original volume in the switch-on position.
  • a sufficient gas cushion always remains in the pump chamber 19, which effectively dampens the effects of the pressure peaks emanating from the switching arc on the drive.
  • the switching stroke is significantly shorter than the theoretically possible pump stroke.
  • FIG. 2 largely corresponds to that of FIG. 1 with the difference that here additional means are provided so that the pressure in the pump chamber 19 does not rise above a predetermined value.
  • these means can be formed by a pressure relief valve 32 attached to the cylinder 13 and releasing a side outlet 31 and / or by a pressure relief valve 34 attached to the piston 17 and opening a passage 33 therein. If a pressure relief valve is provided both on the cylinder 13 and on the piston 17, it is expedient to set this to approximately the same response pressure.
  • FIG. 2 Another means is shown on the right in FIG. 2 in order to limit the pressure in the pump chamber 19.
  • a protruding collar 35 is formed on the free end of the sleeve 18, which is normally sealed by an annular piston 36.
  • the annular piston 36 which is also sealing against the inner wall of the cylinder 13, is supported by a spring 37 on the piston 17, which here has a ring of outlets 38 surrounding the root of the sleeve 18. If the pressure in the pump chamber 19 is able to overcome the force of the spring 37, the annular piston 36 is displaced towards the piston 17.
  • the volume of the pump chamber in the switched-off position is still slightly more than a third of the volume in the switched-on position, so that the aforementioned damping effect of the gas cushion remaining in the pump chamber remains guaranteed.
  • FIG. 3 can to a certain extent be viewed as a kinematic reversal of the embodiment of FIG. 1.
  • the contact piece 11 and with it the cylinder 13 and the blowing nozzle 15 are supported in a stationary manner by means not shown in detail.
  • the columns 26 carrying the piston 17 are coupled to the switch drive, which thus moves the piston 17 in the direction of the double arrow 27 between the switch-on and switch-off positions.
  • the contact piece 22 is fixedly coupled to the columns 26 and thus to the drive by means of arms 39, pulling and pushing rods 40 protruding therefrom made of an insulating material and arms 41 projecting laterally from the columns 26.
  • the mode of operation of this embodiment largely corresponds to FIG. 1, but it should be noted that in this embodiment it is possible to keep the masses of the parts of the switch to be accelerated and moved by the drive smaller than in the embodiment of FIG. 1, which in turn allows the drive line to be reduced. 3, the pump chamber 19 still maintains a considerable volume in the switched-off position.
  • FIG. 4 largely corresponds to that of FIG. 3 with the difference that this embodiment is equipped with the means for limiting the pressure in the pump chamber 19, as described on the right with reference to FIG. 2.
  • the ring piston 36 has been displaced against the action of the spring 37 by the collar 35 on the sleeve 18, so that via the annular gap between the inner diameter of the annular piston 36 and the neck of the sleeve 18 and via the outlets 38 in the piston 17, the pump chamber 19 with the rest Space is connected.
  • FIG. 5 corresponds essentially to that of FIG. 4.
  • the means that are provided here for limiting the pressure in the pump chamber are - similar to the one on the left in FIG. 2 - those attached to the cylinder 13 and / or the piston 17 Pressure relief valves 32 and 34, which in turn open the outlet 31 in the cylinder wall and the outlet 33 in the piston 17.
  • FIG. 6 is the same as that of FIGS. 4 and 5, but the contact piece 22, which is movable here, and the piston 17, which is also movable here, are coupled to one and the same drive unit, but each via different linkages, such as are shown in FIGS. 7 to 9 are shown.
  • FIGS. 7 to 9 show the components which are only shown schematically, but with the same reference numerals as in FIG. 6.
  • a drive unit 43 which is arranged outside a switch housing 42 which is indicated by dashed lines.
  • a pivot lever 44 extends from this drive unit 43.
  • one end of a rod 46 is articulated at 45, which is inserted sealingly but displaceably into the housing 42 and at its other end carries the columns 26 on which the piston 17 is anchored.
  • the rod 46 associated with the piston 17 is under the action of a compression spring 47 tensioned in the switch-on position shown in FIG. 7, which strives to have the rod 46 and thus also the piston 17 perform the movement required for a switch-off stroke.
  • the contact piece 22 is connected via a bracket 48 to the one end of a further rod 49 which is essentially parallel to the rod 46.
  • the rod 49 is also under the action of a compression spring tensioned in FIG. 7 and is sealingly but displaceably guided out of the housing 42.
  • the rod 49 is provided with an elongated hole 51 into which a pin 52 anchored at the end of the pivoting lever 44 engages.
  • a locking tooth 53 is attached to the rod 49, which interacts with the one arm of a two-armed pawl 55 pivotably mounted at 54. The other arm of this pawl 55 extends near the rod 46 to which a trigger stop 56 is attached.
  • the swivel lever 44 rotates counterclockwise, as indicated by the arrow in FIG. 8. This initially moves only the rod 46 and with it the piston 17, as a result of which the extinguishing gas located in the pump chamber 19 undergoes pre-compression. Meanwhile, the rod 49 and thus also the movable contact piece remains locked by the pawl 55 and the pin 52 slides in the elongated hole 51 in the direction of the locking tooth 53. As soon as the position in FIG. 8 is reached, the trigger stop 56 on the rod 46 rises the arm of the locking blade 55 pointing towards this, which is thus pivoted clockwise until the other arm of the locking pawl 55 releases the locking tooth 53 on the rod 49.
  • the compression spring 50 can relax unhindered, the rod 49 and thus the contact piece 22 even hurry ahead of the movement of the pivoting lever 44: the switch-off stroke is in full swing while the piston 17 has practically reached its end position.
  • the switch-off position is shown in Fig. 9.
  • the pin 52 is again - as in Fig. 7 - at the end of the elongated hole 51.
  • the switch-on stroke then takes place, in which the swivel lever 44 rotates clockwise. Both rods 46 and 49 are pulled out of the housing at the same time, the compression springs 47 and 50 are tensioned simultaneously and the locking tooth 53 passes over the associated arm of the pawl 55 until the position in FIG. 7 is reached again.
  • additional means can be provided to keep the pressure in the pump chamber 19 limited.

Landscapes

  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP84106283A 1983-11-15 1984-06-01 Druckgasschalter Expired EP0146671B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106283T ATE32286T1 (de) 1983-11-15 1984-06-01 Druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6128/83 1983-11-15
CH612883 1983-11-15

Publications (2)

Publication Number Publication Date
EP0146671A1 EP0146671A1 (de) 1985-07-03
EP0146671B1 true EP0146671B1 (de) 1988-01-27

Family

ID=4304721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106283A Expired EP0146671B1 (de) 1983-11-15 1984-06-01 Druckgasschalter

Country Status (5)

Country Link
US (1) US4598188A (enrdf_load_stackoverflow)
EP (1) EP0146671B1 (enrdf_load_stackoverflow)
JP (1) JPS60119040A (enrdf_load_stackoverflow)
AT (1) ATE32286T1 (enrdf_load_stackoverflow)
DE (1) DE3469098D1 (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665289A (en) * 1985-05-08 1987-05-12 Kabushiki Kaisha Toshiba Puffer type gas insulated circuit breaker
JPH02129822A (ja) * 1988-11-08 1990-05-17 Meidensha Corp パッファ形ガス遮断器
CH679095A5 (enrdf_load_stackoverflow) * 1989-06-22 1991-12-13 Sprecher Energie Ag
DE4015179C2 (de) * 1990-05-11 1994-03-10 Licentia Gmbh Druckgasschalter
DE59303093D1 (de) * 1992-02-06 1996-08-08 Gec Alsthom T & D Ag Druckgasschalter
JPH06310000A (ja) * 1993-04-20 1994-11-04 Hitachi Ltd 接地開閉装置
DE4412249A1 (de) * 1994-04-06 1995-10-12 Siemens Ag Elektrischer Hochspannungs-Leistungsschalter mit einem Heizraum und einem Kompressionsraum
ATE176082T1 (de) * 1995-05-04 1999-02-15 Ansaldo Ind S P A Hochspannungsschalter mit dielektrischem gas mit selbst-beblasung
FR2770681B1 (fr) * 1997-10-30 1999-12-31 Alsthom Gec Disjoncteur a piston semi-mobile et a haut pouvoir de coupure de courants capacitifs
US7830405B2 (en) * 2005-06-23 2010-11-09 Zink Imaging, Inc. Print head pulsing techniques for multicolor printers
TWI227033B (en) * 2002-03-21 2005-01-21 Lg Ind Systems Co Ltd Switching mechanism of circuit breaker for gas insulated switchgear
EP1939910A1 (de) 2006-12-27 2008-07-02 ABB Technology AG Druckgasschalter mit einer radialen Durchströmöffnung
JP2008210710A (ja) * 2007-02-27 2008-09-11 Mitsubishi Electric Corp 電力用ガス遮断器
DE102007063424A1 (de) * 2007-12-19 2009-06-25 Siemens Ag Unterbrecheranordnung mit einem bewegbaren Schaltrohr
DE102010020979A1 (de) 2010-05-12 2011-11-17 Siemens Aktiengesellschaft Druckgas-Leistungsschalter
KR101786521B1 (ko) * 2013-07-02 2017-10-18 엘에스산전 주식회사 초고압 차단기
KR101763451B1 (ko) 2014-04-09 2017-08-01 현대일렉트릭앤에너지시스템(주) 아크열을 재이용하는 복합소호형 차단기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844308A (enrdf_load_stackoverflow) * 1971-10-08 1973-06-26
US3769479A (en) * 1972-04-28 1973-10-30 Westinghouse Electric Corp Puffer-type compressed-gas circuit interrupter with double-flow action
CH594978A5 (enrdf_load_stackoverflow) * 1975-08-07 1978-01-31 Sprecher & Schuh Ag
CH600538A5 (enrdf_load_stackoverflow) * 1976-04-22 1978-06-15 Bbc Brown Boveri & Cie
JPS52142272A (en) * 1976-05-21 1977-11-28 Hitachi Ltd Buffer gas breaker
US4276456A (en) * 1978-10-23 1981-06-30 Westinghouse Electric Corp. Double-flow puffer-type compressed-gas circuit-interrupter
CH645754A5 (en) * 1979-06-14 1984-10-15 Sprecher & Schuh Ag Gas-blast circuit breaker
CH648432A5 (en) * 1979-10-18 1985-03-15 Sprecher & Schuh Ag Gas-blast circuit breaker
JPS56131647U (enrdf_load_stackoverflow) * 1980-03-07 1981-10-06
DE3015946A1 (de) * 1980-04-25 1981-10-29 Brown, Boveri & Cie Ag, 6800 Mannheim Blaskolbenschalter

Also Published As

Publication number Publication date
EP0146671A1 (de) 1985-07-03
ATE32286T1 (de) 1988-02-15
US4598188A (en) 1986-07-01
DE3469098D1 (en) 1988-03-03
JPH0574896B2 (enrdf_load_stackoverflow) 1993-10-19
JPS60119040A (ja) 1985-06-26

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