EP0641001A1 - Tube interrupteur à vide - Google Patents

Tube interrupteur à vide Download PDF

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Publication number
EP0641001A1
EP0641001A1 EP94111689A EP94111689A EP0641001A1 EP 0641001 A1 EP0641001 A1 EP 0641001A1 EP 94111689 A EP94111689 A EP 94111689A EP 94111689 A EP94111689 A EP 94111689A EP 0641001 A1 EP0641001 A1 EP 0641001A1
Authority
EP
European Patent Office
Prior art keywords
movable contact
contact carrier
housing
switch according
vacuum
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Withdrawn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
EP94111689A
Other languages
German (de)
English (en)
Inventor
Henri Duffour
Philippe Goerend
Dominique Loutan
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.)
Secheron SA
Original Assignee
Secheron 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 Secheron SA filed Critical Secheron SA
Publication of EP0641001A1 publication Critical patent/EP0641001A1/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Withdrawn legal-status Critical Current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
    • H01H33/60—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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66223—Details relating to the sealing of vacuum switch housings
    • 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
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • 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
    • H01H2033/66253—Details relating to the prevention of unwanted rotation of the contact rod in vacuum switch bellows
    • 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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing

Definitions

  • the invention is based on a switch with a vacuum interrupter arranged between two power connections and actuatable by a drive, comprising a tubular evacuated housing with a fixed and a movable contact, in which the fixed contact with a fixed contact carrier on a first of the two Power connections are supported and a contact carrier of the movable switching element, which can be moved by a drive, is led out of the housing in a vacuum-tight manner by means of a bellows and held on the tube axis by means of a sliding guide and is connected in an electrically conductive manner to a second of the two current connections.
  • the vacuum interrupter provided in the switch housing is particularly susceptible to wear, the vacuum tightness of which is primarily determined by the bellows which leads the movable contact piece in a vacuum-tight manner from the inside of the tube to the outside.
  • the invention relates to a prior art, such as that specified in US 4,071,727 A, EP 0 054 670 A2 or EP 0 132 804 B1.
  • a vacuum tube described in this prior art has a sliding guide for a movable switching element which is guided into the interior of the tube in a vacuum-tight manner by means of a bellows.
  • the sliding guide ensures that the movable switching element is guided largely along the tube axis.
  • the invention is based on the object of specifying a switch of the type mentioned at the outset, which can be easily manufactured and maintained and which is also distinguished by a high level of operational reliability after a large number of switching operations.
  • the switch according to the invention has an easily producible sliding guide, which ensures a strictly axially oriented guidance of the movable contact piece of the vacuum interrupter and keeps unwanted torsional forces and radially acting force components away from the bellows of the vacuum interrupter.
  • This sliding guide can be very easily attached to a commercially available vacuum interrupter, thereby enabling the vacuum interrupter to be mounted in a housing enclosing this tube without the bellows ensuring the vacuum tightness of the vacuum interrupter being damaged.
  • the sliding guide prevents the bellows from being compressed during an opening process by axially limiting the switching stroke.
  • the switch can handle a large number of circuits carry out without mechanically impermissible stress on the bellows and thus endanger the vacuum tightness of the vacuum interrupter.
  • the switch according to the invention is therefore characterized by a particularly high level of operational reliability, even after numerous switching operations, and by great ease of installation and maintenance. For this reason, it can be used in a particularly advantageous manner as a main switch in electric traction vehicles, in which a high level of safety is in the foreground even after a long operating time under difficult operating conditions.
  • a switch which can be attached to a traction vehicle has an essentially cylinder-symmetrical vacuum interrupter 1.
  • a tubular switch housing 3, in which the vacuum interrupter 1 is accommodated, is arranged concentrically to the tube axis 2.
  • the switch housing 3 consists of a hollow cylindrical insulator 4 and two metallic current connections rigidly connected to the insulator 4, one of which is designed as a cover 5 and the other contains a tubular hollow body 6.
  • Vacuum interrupters are sold in large quantities by relevant manufacturers and each contain a tubular housing 7 (shown in FIG. 1) with two contact pieces.
  • a contact carrier 8 of a movable one of the two contact pieces which can be moved in the direction of the tube axis 2 by a drive (marked with a double arrow), is vacuum-tight through the Housing 7 guided inside the vacuum interrupter 1.
  • the movable contact carrier 8 is connected in an electrically conductive manner to the power connection containing the tubular hollow body 6 via a connecting element (not shown).
  • a contact carrier 9 of a fixed one of the two contact pieces is led out of the interior of the housing 7 in a vacuum-tight manner.
  • the fixed contact carrier 9 is designed as a threaded connector 10.
  • the threaded connector 10 is screwed into a non-designated threaded bore of the cover 5, which acts as a power connection, and thus serves on the one hand to fix the right end of the vacuum interrupter 1 in the switch housing 3 and also to form a current transfer from the fixed contact carrier 9 to the power connection designed as a cover 5.
  • An essentially ring-shaped insulating part 11 serves to hold the left end of the vacuum interrupter 1 in the switch housing 3.
  • One of two contact pieces is attached to the free ends of the contact carriers 8 and 9, which cannot be seen.
  • the movable contact carrier 8 is shifted to the right by the drive and the two contacts are brought into engagement with one another.
  • This sliding guide contains a hollow cylindrical bushing 12 made of an abrasion-resistant material, preferably a bearing metal or plastic, such as polytetrafluoroethylene, with a mounting flange 13 and a guide element 14 which is held in a part of the movable contact carrier 8 which acts as a sliding body.
  • the socket 12 extends in the axial direction at least so long that a tilt-free axial guidance of the movable contact carrier 8 is ensured.
  • the axially extended length of the bushing 12 corresponds approximately to the diameter of the one on the inner surface the bushing 12 mounted sliding body.
  • the suitable length of the bushing 12, the low-clearance mounting of the sliding body on the inner surface of the bushing 12 and the great flexural strength of the sliding body and the bushing 12 mean that the contact carrier 8 can only be displaced in the axial direction.
  • the mounting flange 13 is fastened to a flange 16 of the housing 7 by means of two screw connections 15.
  • each of the two screw connections 15 has a threaded bolt 17 fastened to the flange 16 and guided through an unspecified bore in the mounting flange 13 and a nut 18 securing the threaded bolt 17.
  • 19 denotes a bellows surrounding the contact carrier 8, which is connected with its right end in a vacuum-tight manner to the contact carrier 8 and with its left end in a vacuum-tight manner to the housing 7.
  • the part of the contact carrier 8 which acts as a sliding body of the sliding guide ends in a stop 20 which limits the stroke c of the movable contact when switching off.
  • a holding groove 21 is milled in the axial direction, into which a lower section of the guide element 14 is fitted.
  • the guide element 14 is advantageously cuboid.
  • An upper section of the guide element 14 is guided in an axially aligned guide groove 22 which extends onto the inner surface of the bushing 12 with almost no play.
  • the mode of operation of this embodiment of the AC switch according to the invention is as follows: When switching off, the contact carrier 8 of the movable contact piece is guided to the left from the switch-on position shown in FIG.
  • the part of the contact carrier 8 sliding on the inner surface of the socket 12 ensures exact axial guidance and prevents the transmission of radially acting forces from the contact carrier 8 to the bellows, which occurs in particular when installing the vacuum interrupter 1 in the switch housing 3 or in Maintenance work can occur.
  • the drive always acts axially on the moving contact. Additional guide elements for the drive are therefore unnecessary.
  • the almost play-free guidance of the guide element 14 in the guide groove 22 keeps undesired torsional forces away from the bellows 19. This is of particular advantage in assembly and maintenance work, in which otherwise the bellows 19 can easily be damaged by inadvertent rotation of the contact carrier 8 and the vacuum tightness can thus be removed.
  • the stop 20 strikes the end of the socket 12 facing the contacts. An undesirably strong compression of the bellows 19 and premature leakage of the vacuum interrupter 1 are thus prevented.
  • the mounting flange 13 of the socket 12 is clamped to the flange 16 of the housing 7 by means of a clamping ring 23.
  • the socket 12 is screwed to the flange 16 according to the variant according to FIGS. 2 and 3, but it can also be screwed to the flange via a clamping ring 23 according to the variant according to FIG 16 jammed.
  • the sliding body of the movable contact carrier 8, which is guided in the socket 12, is formed by a sleeve 24 having a profiled lateral surface.
  • the lateral surface advantageously has an elliptical, square, hexagonal or any other polygonal profile.
  • the sleeve 24 is with a centrally guided, cylindrical bore.
  • the sleeve 24 has a material recess which surrounds the movable contact carrier 8 in an annular manner and serves to receive a clamping ring 25 which can be pushed onto the movable contact carrier 8.
  • Axially aligned clamping screws 26 are guided through the clamping ring 25.
  • axially aligned threaded bores 27 are inserted, which serve to receive the clamping screws 26.
  • the stop 20 is arranged on the sleeve 24 at the end facing the fixed contact piece.
  • the bushing 12 has an inner surface adapted to the outer surface of the sleeve 12.
  • Bushing 12 and / or sleeve 24 are made of abrasion-resistant material, preferably bearing metal and / or a plastic, such as, in particular, polytetrafluoroethylene.
  • the sleeve 24 is pushed onto a cylindrical part of the movable contact carrier 8 which fits into the bore and is fixed to the contact carrier by screwing the clamping ring 25. Since the socket 12 has an inner surface adapted to the outer surface of the sleeve 24, a strictly axially oriented guidance of the movable contact carrier is always ensured in this variant of the invention as well, and according to the previously described exemplary embodiments, radial and / or azimuthally directed movements of the movable contact carrier 8 completely avoided.
  • a suitable fixation of the sleeve 24 ensures that when the stop 20 is switched off, after passing through the predetermined stroke c of the movable contact piece, it hits the end of the bush 12 facing the fixed contact piece, and an excessive compression of the bellows 19 is thus avoided.
  • This embodiment of the invention is particularly suitable for vacuum interrupters which have a movable contact piece with a smooth, cylindrical contact carrier 8, whereas the embodiments according to FIGS. 2 and 3 or according to FIG 4 are particularly suitable for vacuum interrupters in which a groove-shaped recess is already provided in the contact carrier of the movable contact.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Push-Button Switches (AREA)
  • Slide Switches (AREA)
EP94111689A 1993-08-27 1994-07-27 Tube interrupteur à vide Withdrawn EP0641001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH255793A CH686326A5 (de) 1993-08-27 1993-08-27 Schalter mit einer Vakuumschaltroehre.
CH2557/93 1993-08-27

Publications (1)

Publication Number Publication Date
EP0641001A1 true EP0641001A1 (fr) 1995-03-01

Family

ID=4236481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94111689A Withdrawn EP0641001A1 (fr) 1993-08-27 1994-07-27 Tube interrupteur à vide

Country Status (7)

Country Link
US (1) US5543598A (fr)
EP (1) EP0641001A1 (fr)
JP (1) JPH07153353A (fr)
CN (1) CN1035703C (fr)
CH (1) CH686326A5 (fr)
CZ (1) CZ207494A3 (fr)
FI (1) FI943944A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906157C1 (de) * 1999-02-10 2000-12-14 Siemens Ag Hochspannungsleistungsschalter mit wenigstens einer Unterbrechereinheit
WO2001043152A1 (fr) * 1999-12-08 2001-06-14 Siemens Aktiengesellschaft Contacteur de depression dote d'un element de guidage mobile
WO2019115178A1 (fr) * 2017-12-11 2019-06-20 Siemens Aktiengesellschaft Tube commutateur sous vide

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6043446A (en) * 1999-06-07 2000-03-28 Eaton Corporation Vacuum switch including shield and bellows mounted on electrode support structure located in electrode circumferential groove
JP2002171624A (ja) * 2000-11-30 2002-06-14 Mitsubishi Electric Corp ガス封入形開閉装置
JP4394938B2 (ja) * 2003-12-08 2010-01-06 三菱電機株式会社 ガス絶縁開閉装置
DE102006015085A1 (de) * 2006-03-13 2007-09-27 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Vorrichtung zur Aufnahme und Übertragung von elektrischer Energie für Schienenfahrzeuge
DE102010033259A1 (de) * 2010-07-30 2012-02-02 Siemens Aktiengesellschaft Vakuumschaltkammer
EP3163594A1 (fr) * 2015-10-26 2017-05-03 ABB Schweiz AG Interrupteur à vide avec un contact mobile
DE102017112813A1 (de) * 2017-06-11 2018-12-13 Eaton Electrical Ip Gmbh & Co. Kg Doppelkontakt-Schalter mit Vakuumschaltkammern
DE102017217166A1 (de) * 2017-09-27 2019-03-28 Siemens Aktiengesellschaft Anordnung und Verfahren zum Dämpfen des Kontaktprellens bei Hochspannungsleistungsschaltern
CN109509675B (zh) * 2018-12-14 2020-08-25 北京中车赛德铁道电气科技有限公司 一种保护真空管的绝缘子结构
DE102019216663B4 (de) * 2019-10-29 2023-02-02 Siemens Aktiengesellschaft Vakuumschaltvorrichtung für eine Schaltung mit Haupt- und Nebenstrompfad

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH493925A (de) * 1969-02-14 1970-07-15 Siemens Ag Vakuumschalter mit einer festen und einer beweglichen, abgedichtet in das Schaltergehäuse eingeführten kontaktbestückten Schaltstange
US3727018A (en) * 1971-09-16 1973-04-10 Allis Chalmers Disk vacuum power interrupter
DE2440829A1 (de) * 1974-08-26 1976-03-11 Siemens Ag Vakuumschaltrohr
US4071727A (en) * 1976-05-06 1978-01-31 General Electric Company Vacuum-type circuit interrupter with means for protecting its bellows against mechanical damage
DE3717864A1 (de) * 1987-05-26 1988-11-17 Slamecka Ernst Vakuumschalter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026394A (en) * 1959-11-10 1962-03-20 Jennings Radio Mfg Corp Vacuumized electric switch
GB1218357A (en) * 1967-04-13 1971-01-06 English Electric Co Ltd Improvements in or relating to bellows
DE3048557A1 (de) * 1980-12-22 1982-07-22 Siemens AG, 1000 Berlin und 8000 München "vakuumschalter"
US4499349A (en) * 1981-11-20 1985-02-12 Kabushiki Kaisha Meidensha Vacuum interrupter
DE3327390A1 (de) * 1983-07-29 1985-02-07 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltroehre, insbesondere fuer einen niederspannungsschuetz
GB0615871D0 (en) * 2006-08-10 2006-09-20 Intersurgical Ag Improvements relating to humidification chambers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH493925A (de) * 1969-02-14 1970-07-15 Siemens Ag Vakuumschalter mit einer festen und einer beweglichen, abgedichtet in das Schaltergehäuse eingeführten kontaktbestückten Schaltstange
US3727018A (en) * 1971-09-16 1973-04-10 Allis Chalmers Disk vacuum power interrupter
DE2440829A1 (de) * 1974-08-26 1976-03-11 Siemens Ag Vakuumschaltrohr
US4071727A (en) * 1976-05-06 1978-01-31 General Electric Company Vacuum-type circuit interrupter with means for protecting its bellows against mechanical damage
DE3717864A1 (de) * 1987-05-26 1988-11-17 Slamecka Ernst Vakuumschalter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906157C1 (de) * 1999-02-10 2000-12-14 Siemens Ag Hochspannungsleistungsschalter mit wenigstens einer Unterbrechereinheit
WO2001043152A1 (fr) * 1999-12-08 2001-06-14 Siemens Aktiengesellschaft Contacteur de depression dote d'un element de guidage mobile
US6649854B1 (en) 1999-12-08 2003-11-18 Siemens Aktiengesellschaft Vacuum contactor with movable guide element
WO2019115178A1 (fr) * 2017-12-11 2019-06-20 Siemens Aktiengesellschaft Tube commutateur sous vide
US11676784B2 (en) 2017-12-11 2023-06-13 Siemens Energy Global GmbH & Co. KG Vacuum interrupter

Also Published As

Publication number Publication date
US5543598A (en) 1996-08-06
FI943944A (fi) 1995-02-28
JPH07153353A (ja) 1995-06-16
CH686326A5 (de) 1996-02-29
CN1105146A (zh) 1995-07-12
CZ207494A3 (en) 1995-03-15
FI943944A0 (fi) 1994-08-26
CN1035703C (zh) 1997-08-20

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