EP3018683A1 - Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck - Google Patents

Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck Download PDF

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Publication number
EP3018683A1
EP3018683A1 EP14003735.9A EP14003735A EP3018683A1 EP 3018683 A1 EP3018683 A1 EP 3018683A1 EP 14003735 A EP14003735 A EP 14003735A EP 3018683 A1 EP3018683 A1 EP 3018683A1
Authority
EP
European Patent Office
Prior art keywords
vacuum interrupter
housing
contact
ceramic housing
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Withdrawn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
EP14003735.9A
Other languages
English (en)
French (fr)
Inventor
Dietmar Dr.-Ing. Gentsch
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
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP14003735.9A priority Critical patent/EP3018683A1/de
Priority to PCT/EP2015/002218 priority patent/WO2016070996A1/en
Publication of EP3018683A1 publication Critical patent/EP3018683A1/de
Withdrawn legal-status Critical Current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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • 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
    • H01H2033/66215—Details relating to the soldering or brazing 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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66223—Details relating to the sealing of vacuum switch housings

Definitions

  • the invention relates to a Vacuum interrupter for low-, medium-, or high-voltage use, for high environmental pressure application, with at least one moving contact and one fixed contact in an insulting ceramic housing, according to the preamble of claim 1.
  • Vacuum interrupter application for such use in high pressure environment are known for subsea application.
  • switchgear arrangement for medium voltage use are applied for engines in mineral oil and gas subsea fields.
  • known vacuum switchgears are arranged in pressure tight containments which are not trivial to construct.
  • Such pressure separate containments in which vacuum pole parts are arrangend into, makes the system highly complex.
  • the object of the invention is, to reduce the needed number of parts in the case of a pressure tight vacuum interrupter or switchgear installation in high pressure environment like in subsea application.
  • the solution of the problem is the invention, wherein the ceramic housing of the vacuum interrupter itself is high pressure tight, in the range of vacuum inside the ceramic housing, and 500 Bar outside of the ceramic housing.
  • the housing of the vacuum interrupter is pressure tight itself, and need not further external housing for producing pressuretightness against environmental high pressure.
  • the invention is used in medium voltage range.
  • a further advantageous embodiment is, that the fixed contact is connected to a fixed contact rod, extended through the ceramic housing of the vacuum interrupter housing at one distal end.
  • a further advantageous embodiment is, that the ceramic housing has one integral distal end, and that the fixed contact is connected to a fixed contact rod, extended through the ceramic housing of the vacuum interrupter at one distal end, and fixed at the ceramic housing of the vacuum interrupter by brazing.
  • the vacuum interrupter has on the fixed contact side a externally ending contact rod, passing through the external metal cap at that side, and passing through the ceramic housing of the vacuum interrupter too.
  • the contact rod is there going through the ceramic housing as an end cap or lid, to fix the fixed contact side after brazing to the vacuum interrupter.
  • a flange at the ceramic housing which takes the connection between the movable side of the vacuum interrupter via a sliding or flexible contact system to the middle part of the flange.
  • the distal end of the vacuum interrupter housing at the fixed contact rod side is strengthend additionally by a metal cap with an opening, through which the fixed contact rod is guided pressuretightend through this opening.
  • This brazing has to be pressuretight.
  • the additional metal cap at that side of the vacuum interrupter cares for force distribution.
  • the distal end of the vacuum interrupter housing as well as the metal cap are domeshaped.
  • the metal cap is fixed pressuretight at the distal end of the ceramic housing of the vacuum interrupter by a liquid sealing material.
  • the ceramic housing is closed by a metal cap and that the moving contact rod is gastightly provided with an at least axially flexible bellow, by which the moving contact is allowed to be moved for closing and opening the moving contact to or from the fixed contact.
  • a cylindrical tube is attached pressuretightly at the ceramic housing of the vacuum interrupter at the moving contact side in such, that this cylindrical body only encloses the push rod of the moving contact and a drive for that pushrod.
  • the ceramic housing of the vacuum interrupter is a one part tube, in case of non use of a light arc shielding inside the vacuum interrupter.
  • the ceramic housing of the vacuum interrupter is a two part tube, in case of a placement of a shielding element inside the vacuum interrupter, so that the shielding is contacted externally by conducting elements from the shielding to an outer field stearing contact, and that the conducting elements are brazed on the opposing surfaces of the two parts of the ceramic housing of the vacuum interrupter pressuretightly.
  • cylindrical tube is attached and fixed pressure tight to the vacuum interrupter housing via a clamp ring, which corresponds with an integral collar or flange ring at both opposing sides of the vacuum interrupter housing and the tube.
  • cylindrical tube consist of at least two axially attached cylindrical tubes.
  • the cylindrical tube is closed at it open end with a closed pressure tightly fixed flange.
  • the cylindrical tube is made of an insulating material.
  • a contact ring as a contact terminal of the moving contact side, which is electrically connected to the push rod of the moving contact via a sliding contact or a flexible contact band.
  • FIG. 1 An embodiment of the invention is shown in figure 1 .
  • the conclusional and basical feature of the invention is, that the housing of the vacuum interrupter is pessuretight itself, within vacuum inside, and high environmental pressure until 500 bar outside.
  • a basical feature is that the insulating ceramic tube provides a brazing flange, to take the fixed contact rod of the vacuum interrupter. This flange is brazed to the ceramic tightly. Additionally an outer metal cap is positioned over that, and brazed also pressuretightly to the flange, which is formed as a collar at the fixed contact rod.
  • a further metal cap is brazed vacuumtight on the ceramic tube, at that side, where the movable contact rod of the moving contact is brazed to a bellow, which is furthermore brazed to the metal cap at that side of the vacuum interrupter, in order to allow the movment of the movable contact rod switching path.
  • the metal cap with the brazed bellow is installed inside a cylindrical tube as an adapter inner part, to avoid high pressure at the part.
  • the middle side is a connection to a flange between two ceramic parts, that means the vacuum interrupter housing and the cylindrical tube, and on the bottom side there is the connection to the breaker assembly.
  • a metal cap is installed to take the mechanical force from the fixed copper stem of the vacuum interrupter and to distribute the mechanical stress to the ceramic round shaped part.
  • liquid sealing is provided with the advantage the mismatch of both parts can be taken and the sealing against the liquid will be there.
  • the ceramic housing can be covered by a rubber material to avoid damage at the outer side of the housing during the subsea installation getting service.
  • the vacuum interrupter housing 4 is made of a insulating ceramic material.
  • the housing could be a one part housing, if no shielding 5 is implemented inside the vacuum interrupter, or made of two parts, if a shielding 5 is implemented. In this case the two parts are brazed together with a contact collar of the shielding 5 between them.
  • the distal end of the housing 4 above has an opening 7, through which the fixed contact rod 1 is installed and pressuretightly fixed by brazing.
  • an integral collar ring is formed at the contact rod 1, in such, that it can be brazed directly on the distal end of the ceramic housing 1 around the opening 7.
  • a metal cap 2 is brazed or fixed with a liquid sealing on top of that, in order to distribute the force which is impacted by the external enviromental pressure.
  • Both, the distal end of the ceramic housing 4 of the vacuum interrupter, as well as the metal cap 2 is or are domeshaped.
  • the lower part of the vacuum interrupter housing 4 is closed also with a metal cap 24.
  • This metal cap is located in the inner pressuretight region, so that this metal cap has only to be pressure tight against 1 or 2 bar on one side and vacuum on the other side.
  • the moved contact piece 21 is fixed to a movable contact rod 16, which is guided vacuum tight through the lower metal cap 24 by a bellow, which is brazed at one side to the movable contact rod 16 and at the other side brazed to the lower metal cap 24.
  • the electrical contact to external is covered after brazing with a rubber Clat, or a 39t made of insulating material.
  • the contact rod is electrically connected to a flexible contact band 15, which is furthermore electrically connected to a contact ring 14.
  • This contact ring 14 is placed between two integral flanges, one at the side of the vacuum interrupter housing 4, and one at side of the further cylindrical tube 12. Both opposing flanges, with the contact ring 14 between them, are fixed pressure tight by a clamp ring 13.
  • the contacts 20 and 21 of the vacuum interrupter can be finally electrically contacted to external terminals via the fixed contact rod 1 at one side, for example the fixed contact side, and at the contact ring 14 for example the moving contact side.
  • Addional further cylindrical tubes can be attached axially, so far they are needed to implement the drive of the moving contact rod 16.
  • vacuum interrupters can be installed for one- or three- or more-phases use in a tank, filled with insulating oil.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP14003735.9A 2014-11-06 2014-11-06 Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck Withdrawn EP3018683A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14003735.9A EP3018683A1 (de) 2014-11-06 2014-11-06 Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck
PCT/EP2015/002218 WO2016070996A1 (en) 2014-11-06 2015-11-04 Vacuum interrupter for low-, medium-, or high voltage use, for high environmental pressure application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14003735.9A EP3018683A1 (de) 2014-11-06 2014-11-06 Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck

Publications (1)

Publication Number Publication Date
EP3018683A1 true EP3018683A1 (de) 2016-05-11

Family

ID=51865970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14003735.9A Withdrawn EP3018683A1 (de) 2014-11-06 2014-11-06 Vakuumschalter für Nieder-, Mittel- oder Hochspannungsanwendung für Einrichtung mit hohem Umgebungsdruck

Country Status (2)

Country Link
EP (1) EP3018683A1 (de)
WO (1) WO2016070996A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106683940A (zh) * 2017-02-10 2017-05-17 孙光明 一种具有散热功能的充气柜固封极柱
CN111837304A (zh) * 2018-03-14 2020-10-27 三菱电机株式会社 气体绝缘开关装置
CN112397338A (zh) * 2019-08-16 2021-02-23 西门子股份公司 用于断续器单元的通风绝缘构件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568804A (en) * 1983-09-06 1986-02-04 Joslyn Mfg. And Supply Co. High voltage vacuum type circuit interrupter
EP1942514A1 (de) * 2007-01-04 2008-07-09 Eaton Electric B.V. Schaltvorrichtung für Hochdruckumgebungen
US20090218318A1 (en) * 2006-09-01 2009-09-03 Abb Technology Ag Vacuum switching chamber for medium-voltage switchgear assemblies
US20100246102A1 (en) * 2007-12-21 2010-09-30 Schneider Electric Industries Sas Insulation of a switchgear device of vacuum cartridge type by insert moulding
DE102011008959B3 (de) * 2011-01-19 2012-02-09 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Vakuumschaltröhren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568804A (en) * 1983-09-06 1986-02-04 Joslyn Mfg. And Supply Co. High voltage vacuum type circuit interrupter
US20090218318A1 (en) * 2006-09-01 2009-09-03 Abb Technology Ag Vacuum switching chamber for medium-voltage switchgear assemblies
EP1942514A1 (de) * 2007-01-04 2008-07-09 Eaton Electric B.V. Schaltvorrichtung für Hochdruckumgebungen
US20100246102A1 (en) * 2007-12-21 2010-09-30 Schneider Electric Industries Sas Insulation of a switchgear device of vacuum cartridge type by insert moulding
DE102011008959B3 (de) * 2011-01-19 2012-02-09 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Vakuumschaltröhren

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106683940A (zh) * 2017-02-10 2017-05-17 孙光明 一种具有散热功能的充气柜固封极柱
CN111837304A (zh) * 2018-03-14 2020-10-27 三菱电机株式会社 气体绝缘开关装置
CN111837304B (zh) * 2018-03-14 2021-12-31 三菱电机株式会社 气体绝缘开关装置
CN112397338A (zh) * 2019-08-16 2021-02-23 西门子股份公司 用于断续器单元的通风绝缘构件

Also Published As

Publication number Publication date
WO2016070996A1 (en) 2016-05-12

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