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
  • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
• • 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

Definitions

• the invention relates to a vacuum interrupter for medium voltage voltage switchgear and high voltage systems.
• Prior art vacuum interrupters have a bellows to movably guide the moving contact of the vacuum interrupter into the vacuum interrupter.
• the object of the invention is now to reduce or prevent a deformation of the bellows and the rubbing of the bellows on the moving contact.
• the vacuum interrupter at least one insulating body, a fixed contact, a fixed contact flange, a moving contact with a longitudinal axis of the moving contact, a Bewegumbleflansch, a moving contact bearing and a bellows.
• the fixed contact is fixedly arranged in the Fest.flansch, the moving contact is movably guided in the Beweg.lager and the moving contact is movably secured by the bellows on Beweg.flansch, wherein the bellows with a first Balgende is attached to the moving contact flange and the bellows with a second Balgende the moving contact is secured by a contact on the Be against movements along the longitudinal axis of the moving contact fixed sleeve, which leads through the Beweg.lager Ge is an increased compressive strength of the vacuum interrupter is achieved against ambient pressures above 1 bar. In particular, an increased compressive strength of the vacuum interrupter is achieved against ambient pressures above 2 bar, more preferably above 4 bar.
• the fixation of the sleeve on the moving contact thereby causes the bellows is protected in each switch position and even with the contact system closed contact contact and Be away no possibility of frictional contact between rule bellows and moving contact or a deformation of the bellows.
• Increased ambient pressures occur as in preferably when the vacuum interrupter in a gas under overpressure, in particular a Iso liergas, more preferably a gas with a GWP (Global Warming Potential) is smaller than that of SF6, is arranged.
• the gas with which the switchgear is filled may be a ketone, in particular a fluoroketone, a nitrile, or a gas mixture with nitrogen and carbon dioxide.
• the sleeve is preferably designed so that it has a nenkontur In, which simulates the outer contour of the moving contact in the area in which the sleeve is mounted on the moving contact.
• the sleeve is designed in an advantageous embodiment such that the distance between the sleeve and bellows in the Mon-oriented state is small.
• the sleeve is arranged on the Bewegkon clock in such a way that the sleeve extends from the second bellows end through the Bewegumblelager and that the sleeve is fixed by means of a fastening means on the moving contact, that during the movement of the moving contact no Relative movement along the longitudinal axis of the moving contact between the moving contact and the sleeve takes place.
• the moving contact has at least one BewegCountstab and a BewegTypeTypeangle and that the second Balgende is directly connected to the BewegCountstab.
• BewegTypestab and moving contact disc can also be arranged a moving contact body.
• the moving contact has at least one BewegCountstab and a BewegTypeTypescale and that the second Balgende is connected via a bellows cap with the loading weg.stab.
• Beweg.stab and BewegTypesolution can also be a moving contact body angeord net.
• the sleeve is fixed in the region of the second bellows end and / or in the region of the bellows cap by means of an interference fit in the position on the moving contact.
• the sleeve is by latching, latching, soldering, welding, pressing on a not reproduced by the sleeve thickening of the moving contact or otherwise secured.
• the press fit of the sleeve SE takes place between the second bellows end and the moving contact or between the bellows cap and the moving contact rod.
• a latching of the sleeve with structural elements on the second Balgende, the Bewegkon clock or the Belgkappe done.
• Verrasttation in particular interlocking projections and / or Vertiefun conditions are suitable.
• the moving contact bearing has a first guide element and that the sleeve has a second Füh guiding element, wherein the first guide element and the second guide element engage each other such that a rotation of the sleeve is prevented in the Bewegromelager.
• interlocking tongue and groove constructions are suitable, that is to say the first guide element is, for example, a groove and the second guide element is, for example, a protruding structural element, a groove, such as a spring, or vice versa.
• the structural element can be either solid, inflexible, or flexible etcbil det. The interaction of the first guide member and the second guide member thus prevents rotation of the sleeve in the moving contact bearing.
• the sleeve has more than one first guide element, in particular two or three first guide elements, and that the moving contact bearing has more than one second guide element, in particular two or three second guide elements.
• the respectively correspon dierenden guide elements interlock, ie each a first guide element and a second guide element cooperate, so that two, three or more first guide elements and second guide elements for safe guidance and there with an effective twist protection between Bewegumble bearing and sleeve ,
• first guide element and the second guide element engage in such a way and limit each other ge in the movement that the sleeve does not slide out of the moving contact bearing.
• this is possible by limiting the groove in the longitudinal extent parallel to the longitudinal axis of the moving contact, that is, in this example, the Nuteingriff, such as a spring abuts the end of the groove and thus no further movement of the sle se and of the with the Sleeve connected moving contact made light.
• the bellows by overstretching when sliding out of the sleeve with the moving contact from the moving contact bearing is overstretched, since the movement by the first Füh guiding element and the second guide member is limited.
• the sleeve allows not only a reduced deformation risk tion and thus higher ambient pressures and / or size re Balghübe and Balglinin, but also a safeguard against damage to the bellows by overstretching of the bellows.
• the BewegCountstab comprises a third guide member and the sleeve has a fourth guiding element, which usammen vigorous Z such that a Verdre hen the sleeve on the Beweg.stab is prevented.
• the third guide member by a flattened area on the circumference of the moving contact rod, in particular the moving contact, is formed and that the fourth guide element forms a ge by filling the area with the flattening of Bewegromestabes or moving contact correspondingly filling raised flattening in the sleeve becomes.
• the BewegCountstab also wholly or partially an elliptical circumferential profile, a ellipti cal cross-sectional area, and the sleeve an elliptical order catching profile, an elliptical cross-sectional area having.
• the BewegCountstab has more than a third guide element, in particular two or three third guide elements
• the sleeve has more than a fourth guide element, in particular two or three fourth guide elements.
• the respective corres ding guide elements interlock, that is, in each case a third guide element and a fourth guide element we ken together, so that two, three or more third guide elements and fourth guide elements for safe guidance and thus an effective twist protection between moving contact and sleeve to care.
• first guide member By using the first guide member, the second guide member, the third guide member and the four th guide member or multiple of these, is additional Lich to reduce the risk of deformation of the bellows by the sleeve also reduces the risk of deformation with respect to torsions of the bellows.
• the sleeve is made of a material having a low coefficient of friction.
• the friction coefficient for the adhesion and the friction coefficient, the sliding friction are both small, and more preferably, the friction coefficients for the static friction and the sliding friction are the same, thereby enabling jerk-free gliding and stopping.
• the sleeve is made of polytetrafluoroethylene or a modification of polytetrafluoroethylene, al so a chemically related material.
• the second bellows end and / or the bellows cap continue to have a bellows shield.
• the bellows shield prevents and / or reduces the vaporized te materials settle on the bellows.
• the bellows shield extends from the second bellows end in the direction of the Bewegitchflansches.
• FIG. 1 section through a vacuum interrupter with inventions
• Figure 2 section through a moving contact rod with sleeve
• FIG. 3 Perspective view of a guided sleeve in a moving contact bearing
• FIG. 1 shows a section through a vacuum interrupter 10 with a sleeve 90 according to the invention.
• the vacuum interrupter 10 has insulating elements 20, which optionally are spaced apart by an intermediate element 25 in the region of the contact discs.
• the vacuum interrupter 10 has a Festkon contact 30, here consisting of a fixed contact rod 32, a fixed contact body 35 and a fixed contact disc 34.
• the fixed contact 30 is taken at one end of the vacuum interrupter 10 with a FestWalletflansch 40 to an insulator 20 fastened.
• a moving contact 50 of the vacuum interrupter 10 is the Festkon clock 20 arranged opposite one another, wherein the moving contact 50 is here for example from a BewegCountstab 52, a Be weg. emotions 55 and a Beweg.mmaamp 54.
• a sleeve 90 is fixed and this sleeve 90 is guided by a Beweg.lager 70 on Beweg.flansch 60 from the bellows out.
• the sleeve 90 is in the game shown here between the Beweg.stab 52 and the bellows cap 86 is pressed.
• the sleeve 90 is fixed on the moving contact 52 such that it does not come to a relative movement between the sleeve 90 and the Bewegkon contact 50 in a movement of the moving contact 50 along the longitudinal axis 56 of the moving contact 50.
• the bellows 80 which allows movement of the Bewegkon clock 50 within the vacuum interrupter 10 is attached to a first end 82 of the bellows 80 on Bewegumbleflansch 60.
• the second end 84 of the bellows 80 is secured in the fi gure 1 to the bellows cap 86 and the bellows cap 86 is again fastened to the BewegCountstab 52 of the moving contact 50 fastened.
• the bellows cap 86 has in FIG. 1 an optional bellows shield 88 extending from the bellows cap 86 of the bellows 80 in the direction of BewegMessageflansches 60 he stretches.
• FIG. 2 shows a BewegWalletstab 52 with a sleeve 90 which is in the direction of arrow 91 in the press-in 89 between the BewegWalletstab 52 and the bellows cap 86 is pressed.
• this press-fit region 89 can also be formed by a thickening of the moving contact rod.
• the bellows cap 86 has a bellows shield 88, as shown in FIG.
• FIG. 3 shows part of a moving contact rod 52 with a third guide element 53, a sleeve 90 with a fourth guide element 94 and a second guide element 92 in the sleeve 90, which is not shown here but in FIG. 4, first guide element 72 of the moving contact bearing 70 interacts.
• FIG. 4 shows a sleeve 90 in a moving contact bearing 70, the sleeve 90 having two second guide elements 92, 92 'and the moving contact bearing 70 having two corresponding first guide elements 72, 72'.
• the first guide elements 72, 72 ' are here as Nuteingriffe, ie fixed
• the second guide elements 92, 92 ' are designed in this example as a groove.
• the groove 92 extends over the entire length of the sleeve 90, but is limited at one end, thereby slipping out of the sleeve 90 and the moving contact, not shown 50, which is connected to the sleeve 90, 70 is prevented by the BewegMultila ger , LIST OF REFERENCE NUMBERS

Landscapes

• High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=64661273

Family Applications (1)

Country Status (6)

Families Citing this family (3)

Family Cites Families (26)

• 2017
  • 2017-12-11 DE DE102017222406.1A patent/DE102017222406A1/de active Pending
• 2018
  • 2018-11-20 WO PCT/EP2018/081927 patent/WO2019115178A1/de unknown
  • 2018-11-20 US US16/771,801 patent/US11676784B2/en active Active
  • 2018-11-20 EP EP18815523.8A patent/EP3724907A1/de active Pending
  • 2018-11-20 CN CN201880079716.1A patent/CN111448635B/zh active Active
  • 2018-11-20 JP JP2020549872A patent/JP7179864B2/ja active Active

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