EP0852386A1 - Disjoncteur avec soufflet - Google Patents

Disjoncteur avec soufflet Download PDF

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Publication number
EP0852386A1
EP0852386A1 EP98250001A EP98250001A EP0852386A1 EP 0852386 A1 EP0852386 A1 EP 0852386A1 EP 98250001 A EP98250001 A EP 98250001A EP 98250001 A EP98250001 A EP 98250001A EP 0852386 A1 EP0852386 A1 EP 0852386A1
Authority
EP
European Patent Office
Prior art keywords
bellows
circuit breaker
area
electrical circuit
drive rod
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.)
Withdrawn
Application number
EP98250001A
Other languages
German (de)
English (en)
Inventor
Manfred Meinherz
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0852386A1 publication Critical patent/EP0852386A1/fr
Withdrawn legal-status Critical Current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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • 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
    • 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
    • H01H33/565—Gas-tight sealings for moving parts penetrating into the reservoir

Definitions

  • the invention relates to an electrical circuit breaker with a gas-tight sealed in an encapsulation housing Breaker unit and with one through a wall of the encapsulation housing gas-tight by means of a bellows performed axially movable drive rod for Transfer of a switching movement to at least one moving one Contact of the breaker unit.
  • Such a circuit breaker is for example from the British Patent 1,095,741 known.
  • Vacuum interrupter units are provided, each one have axially actuated drive rod which is opposite the Vacuum switch housing sealed by means of a bellows is.
  • the present invention has for its object a electrical circuit breakers of the type mentioned create that is designed so that the bellows an enlarged Operational reliability or extended lifespan.
  • the object is achieved in that the bellows Areas of different along its longitudinal axis Has rigidity.
  • a suitable stiffness profile By choosing a suitable stiffness profile, on the one hand a suitable distribution of the deformation in the idle state of the bellows can be achieved along its longitudinal axis.
  • the stiffness profile also the dynamic load during the switching movement as well as the mass of the bellows are taken into account, so that a peak load in individual areas of the bellows is avoided and the burden on the whole Long of the bellows can be spread.
  • the longitudinal axis the bellows is normally approximately parallel to the direction of movement the drive rod.
  • An advantageous embodiment of the invention provides that the first end portion of the bellows, that with the drive rod is firmly connected, is stiffer than that remaining areas of the bellows.
  • a further advantageous embodiment of the invention provides before that the stiffness of the bellows, based on the first end region towards the second end region, which is connected to the Encapsulation housing is firmly connected, continuously or in decreases in several steps.
  • the first end region of the bellows is made stiffer than the other areas, the shock movement at one Drive process to the other, downstream of the first end area Areas of the bellows forwarded so that the remaining area is the largest Acceleration experienced that closest to the first end area is. So it makes sense to also cover this area of the bellows, which is adjacent to the first end region, stiffer to execute than the corresponding areas of the Bellows.
  • areas can several layers of sheet metal are placed on top of each other to do this realize.
  • a further advantageous embodiment of the invention provides before that greater stiffness of an area of the bellows by one in this area versus other areas greater material thickness is reached.
  • the invention can advantageously be designed in this way be that greater stiffness of a portion of the bellows through the area-wise use of one against another Areas of stiffer material is reached.
  • Areas of the bellows for example made of different sheets Metals or alloys are made.
  • FIG. 1 shows an interrupter unit of a high-voltage circuit breaker with a fixed arcing contact 1, a fixed continuous current contact piece 2, a drivable arcing contact 3 and a drivable Continuous current contact piece 4.
  • the switch is in the Figure shown in the off state.
  • When switching on first embraces the drivable tulip-shaped Contact piece 3 the fixed arcing contact piece 1. Then come the two continuous current contact pieces when switching on 2, 4 in contact.
  • the permanent current contact pieces When switching off, the permanent current contact pieces first separate 2, 4, then the arcing contact pieces 1, 3 from each other, so that in the arc space 5 between the arcing contact pieces 1, 3 an arc is ignited. This causes an extinguishing gas heating and an increase in pressure in the Print room 6.
  • extinguishing gas for blowing the arc is compressed by the downward movement of the drivable contact piece 3 together with the extinguishing nozzle 7 and the compression piston 8 in the compression space 9.
  • SF 6 for example, is used as the extinguishing gas in the switch described.
  • the interrupter unit is through an encapsulation housing 10 completed, the two end walls 11, 12 and a cylindrical Part 28, which normally consists of an insulator, especially on the outside with screen ribs. It however, it would also be conceivable for the switch to be metal-encapsulated Execute switches, but then the contact pieces all via insulating material supports 27 inside the encapsulation housing 10 would have to be supported.
  • the drive rod 13 is on the end wall 12 of the encapsulation housing 10 gas-tight by means of a bellows 16 made of steel carried out.
  • the bellows is by means of a flange 17th with a seal 18 with its first end on the drive rod 13 attached. With its second end is the bellows also by means of a union 19 with the end wall 12 connected gastight. For this purpose it is in the area a seal 20 is provided.
  • Stub 21 protects the bellows 16 of the drive rod 13 against mechanical damage.
  • FIG. 2 schematically shows an example in a detail Structure of the bellows 16.
  • the flange 17th the second end of the bellows on the right-hand side, that faces the arc room.
  • the drive moves to the left side of the bellows transmit a jerky movement, because of the inertia of the bellows first in the first Area 21 or 24 deformed the bellows.
  • This area is, as shown in Figures 2 and 3, by the Material-strong stiffer than the other areas 22, 23, 25, 26 of the bellows 16 and extends over several beads of the bellows. That is why the deformation in this area 21, 24 not so large that the bellows could be overloaded.
  • a deformation then also takes place there, ideally is approximately as large as the deformation in each case in the first area.
  • the stiffening of the bellows in different areas can except through the variation of the material thickness and through the use of different substances or different Alloys reached in different areas of the bellows will.

Landscapes

  • Diaphragms And Bellows (AREA)
  • Gas-Insulated Switchgears (AREA)
EP98250001A 1997-01-07 1998-01-07 Disjoncteur avec soufflet Withdrawn EP0852386A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19701763 1997-01-07
DE1997101763 DE19701763C1 (de) 1997-01-07 1997-01-07 Elektrischer Leistungsschalter mit einem Faltenbalg

Publications (1)

Publication Number Publication Date
EP0852386A1 true EP0852386A1 (fr) 1998-07-08

Family

ID=7817799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98250001A Withdrawn EP0852386A1 (fr) 1997-01-07 1998-01-07 Disjoncteur avec soufflet

Country Status (2)

Country Link
EP (1) EP0852386A1 (fr)
DE (1) DE19701763C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059650A2 (fr) * 1999-06-10 2000-12-13 ABB T&D Technology Ltd. Chambre à vide
GB2594101A (en) * 2020-04-14 2021-10-20 Eaton Intelligent Power Ltd Sealing for an intermittent and partial rotating and translating shaft
WO2024061638A1 (fr) * 2022-09-21 2024-03-28 Siemens Aktiengesellschaft Protecteur de soufflet pour interrupteur à vide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243825B4 (de) * 2002-09-16 2004-07-29 Siemens Ag Leistungsschalter mit schwenkbarem Schaltmesser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095741A (en) * 1965-04-22 1967-12-20 Ass Elect Ind Improved electric circuit breaker
US4585913A (en) * 1983-09-17 1986-04-29 Mitsubishi Denki Kabushiki Kaisha Bellows device
EP0434260A1 (fr) * 1989-12-07 1991-06-26 Draftex Industries Limited Dispositif à soufflets de protection pour arbre rotatif

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107763B (de) * 1958-12-23 1961-05-31 Siemens Ag Schalter mit einem gasdichten Gehaeuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095741A (en) * 1965-04-22 1967-12-20 Ass Elect Ind Improved electric circuit breaker
US4585913A (en) * 1983-09-17 1986-04-29 Mitsubishi Denki Kabushiki Kaisha Bellows device
EP0434260A1 (fr) * 1989-12-07 1991-06-26 Draftex Industries Limited Dispositif à soufflets de protection pour arbre rotatif

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1059650A2 (fr) * 1999-06-10 2000-12-13 ABB T&D Technology Ltd. Chambre à vide
EP1059650A3 (fr) * 1999-06-10 2002-07-31 ABB T&D Technology Ltd. Chambre à vide
GB2594101A (en) * 2020-04-14 2021-10-20 Eaton Intelligent Power Ltd Sealing for an intermittent and partial rotating and translating shaft
CN113541032A (zh) * 2020-04-14 2021-10-22 伊顿智能动力有限公司 用于间歇和部分旋转和平移轴的密封结构
US11622461B2 (en) 2020-04-14 2023-04-04 Eaton Intelligent Power Limited Sealing for an intermittent and partial rotating and translating shaft
WO2024061638A1 (fr) * 2022-09-21 2024-03-28 Siemens Aktiengesellschaft Protecteur de soufflet pour interrupteur à vide

Also Published As

Publication number Publication date
DE19701763C1 (de) 1998-07-16

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