EP3586350A1 - Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buse - Google Patents
Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buseInfo
- Publication number
- EP3586350A1 EP3586350A1 EP18716907.3A EP18716907A EP3586350A1 EP 3586350 A1 EP3586350 A1 EP 3586350A1 EP 18716907 A EP18716907 A EP 18716907A EP 3586350 A1 EP3586350 A1 EP 3586350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contact piece
- piece
- bridging
- double
- 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.)
- Pending
Links
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
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
- H01H33/7053—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle having a bridging element around two hollow tubular contacts
-
- 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
-
- 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
- H01H33/91—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 arc-extinguishing fluid being air or gas
Definitions
- the invention relates to a double nozzle switch and a method for switching high currents in the high voltage technology for a pole.
- the dual-nozzle switch comprises at least one first contact which comprises at least a first and at least one second fixed contact piece and at least one first, movable bridging contact piece, via which an electrical contact between the at least one first and the at least one second fixed contact piece is produced in the switched-on state is.
- a double nozzle switch for the high voltage technology according to the prior art is z. B. from EP 0 830 700 Bl.
- the double nozzle switch comprises a rated current contact with two opposite, hollow-cylindrical fixed contact pieces, which are each nozzle-shaped.
- the double jet switch further includes a compression device for extinguishing gas, in particular SF 6 .
- the Comp ⁇ ressionsvoriques has a stationary compression piston, and a movable compression cylinder.
- the compression cylinder comprises a bottom, which is movably arranged with the compression cylinder, and is moved when switched so that the two fixed contacts and the bridging contact piece is spatially encompassed by the compression cylinder.
- the compression cylinder is moved with its bottom such that the bottom is at least pulled off by a contact piece and behind a gap between the fixed contact pieces, which is formed by the fixed distance of the fixed contact pieces from each other, is withdrawn.
- the floor consists of and / or comprises an insulator, e.g.
- the object of the present invention is to provide a double-nozzle switch and a method for switching a double-jet switch, which enable high currents via the double-jet switch, at high switching voltages and in particular at low production costs.
- a double-nozzle switch according to the invention for switching high currents in the high-voltage technology for a pole comprises at least a first contact which comprises at least one first and at least one second fixed contact piece and at least one first, movable bridging contact piece, via which an electrical contact between in the switched-on state the at least one first and the at least one second fixed contact piece is made.
- the double-nozzle switch further comprises at least one second contact, with at least a third and at least ei ⁇ NEM fourth fixed contact piece and at least a second, movable bridging contact piece, via which in the on state, an electrical contact between the at least one third and the at least one fourth fixed contact piece is made, wherein the at least ei ⁇ ne first and the at least one second contact are electrically connected in parallel.
- the double jet switch of the invention has an increased maximum current ⁇ load capacity at a low manufacturing cost through the two parallel-connected contacts.
- the double-jet switch has a low mass to move when switching and can be designed with compact dimensions and in a design with low extinguishing gas volume.
- the current flow through the second contact can be 20 to 90%, in particular at least 50% of the
- the at least one first and the at least one second fes ⁇ te contact piece of the double jet switch of the invention can be a hollow cylinder, in particular in each case in the form of a nozzle to be formed.
- the at least one first, movable bridging contact piece may be hollow-cylindrical, in particular a form-fitting manner with an inner diameter, which essentially corresponds to the outer diameter of the at least a first and / or the at least one second fixed contact piece corresponds.
- Hollow-cylindrical contact pieces have a high current carrying capacity with low mass, depending on the diameter and the thickness of the hollow cylinder wall.
- a low mass of the contact pieces with high current carrying capacity reduces the mass to be ⁇ admirde when switching.
- fast Druckbe ⁇ movements ie short switching times possible with little force, whereby the dimensioning of elements of the kinematic chain and a drive can turn out lower, which saves costs.
- the at least one third and the at least one fourth fixed contact piece may be formed in the shape of a hollow cylinder, in particular in each case in the form of a sliding contact guide.
- the at least one second, movable bridging contact piece may have a hollow cylindrical shape, in particular a sliding contact, in particular a positive fit with an outside diameter which essentially corresponds to the inside diameter of the at least one third and / or the at least one fourth fixed contact piece.
- Sliding contact pieces are simple, inexpensive to produce, have high reliability during operation, are durable and can be moved quickly. The advantages of the design of the contact pieces in the form of hollow cylinders are as previously described.
- a compression device may be included, with a particular stationary or movable compression piston, and / or with a particular movable compression cylinder, which has a bottom, which in particular comprises an insulator.
- the compression device may spatially in the radial direction-between the at least one first and arranged the at least one second contact, in particular in the turned on state of the double jet ⁇ switch.
- the compression device may be configured to extinguish an arc, which may occur during switching.
- the execution of the compression piston with an insulator as the bottom of the compression piston allows an electrical
- At least one first contact of the includes at least one second contact may be, in particular in the activated state of the Doppeldü ⁇ senschalters, particularly associated to the contacts respective gas spaces which in the switched-on state of the double jet switch fluidically separated from each other be Kgs ⁇ NEN.
- the arrangement of the first contact in the interior of the second contact, in particular contact tube, results in a compact construction.
- About fluidly separated gas spaces can a
- Arc effectively extinguished, z. B. by blowing with quenching gas, and skipping arcs between the contacts can be prevented, in particular between the inner and outer contact tube.
- An electrically insulating fluid may be included, in particular ⁇ sondere a liquid and / or a gas, in particular SF 6, nitrogen, dry air, carbon dioxide, a fluoroketone, and / or a Fluornitril.
- the double-nozzle switch in particular the contacts and / or the compression device, can be filled with the electrically insulating fluid, in particular a liquid and / or a gas, in particular SF 6 , nitrogen, dry air, carbon dioxide, a fluoroketone, and / or a fluoronitrile be.
- Electrically insulating fluids serve to isolate contact pieces from one another, in particular when the double-jet switch is switched off suitable arcs particular by blowing to lö ⁇ rule.
- Nozzles may be coated with erosion resistant material, particularly Teflon, and / or PCTFE, and / or graphite at the nozzle ends and / or comprise these materials.
- erosion resistant material particularly Teflon, and / or PCTFE
- graphite at the nozzle ends and / or comprise these materials.
- a method for switching direct and / or alternating current in high-voltage engineering, in particular using a double-jet switch described above comprises, when switching on, at least one ers ⁇ tes, movable bridging contact piece at least a first contact from a first position in electrical contact with a second, fixed contact piece and without electrical contact with a first, fixed contact piece, in particular with the first bridging contact piece, the second contact piece spatially comprehensive, is moved in a second Posi ⁇ tion, with electrical contact between the first and second contact piece on the first bridging contact piece , at least one second movable bridging contact at least ei ⁇ nes in particular with the first bridging contact both the first and the second contact piece spatially at least partially comprising, and wherein the second Cont akts from a first position in electrical contact with a fourth, fixed contact piece and without electrical contact with a third, fixed contact piece, in particular with the fourth contact piece spatially at least partially encompassing the bridging contact piece, in a second position
- the first and the second contact When switching on, the first and the second contact can be closed simultaneously. Alternatively, when switching on, the first and the second contact can be closed successively, in particular with an order in which the second contact is closed in time later than the first contact.
- the at least one first movable bridging contact piece of the at least one first contact may be moved from a second position, with electrical contact between the first and second contact pieces via the first bridging contact piece, to a first position with electrical contact of the first bridging contact piece with the second, fixed one are moved contact piece and without electrical contact with the first fixed contact piece, and wherein the at least one second, movable Matterbrü ⁇ ckungsAuthnnen the at least one second contact of a second position with electrical contact between the third and fourth contact piece via the second bridging contact, in a first position, with electrical contact of the bridging contact piece with the fourth, fes ⁇ th contact piece and without electrical contact with the third, fixed contact piece, can be moved.
- first contact Upon opening of the first contact may be simultaneous or as ⁇ up following, and are moved upon opening of the second contact, the movable compression cylinder with its bottom from the first, in particular the first and second contact piece of the first contact path, in particular to delete a Arc between the first and second contact ⁇ piece.
- the advantages of the method according to the invention for switching direct and / or alternating current in high-voltage engineering, in particular using a double-nozzle switch described above, are analogous to the previously described advantages of the double-jet switch according to the invention for switching high currents in the high-voltage technology for one pole according to claim 1 and vice versa.
- Figure 1 schematically in a sectional view of a pole a double nozzle switch 1 according to the invention in the on state, with two parallel, closed contacts 2, 6, and
- FIG. 2 is a schematic sectional view of the double nozzle scarf ⁇ ter 1 of Figure 1, in the off state, with two open contacts 2, 6th In Figure 1, a double jet Invention ⁇ according switch 1 is shown schematically in sectional view shown with a first and with a second contact 2, 6, in the closed, that is, switched-on state.
- the double-jet switch 1 is designed for switching high voltages, in particular of direct and / or alternating voltages up to 800 kV, and for switching currents in the range of up to 500 kA.
- the first contact 2 of the double nozzle switch 1 has two fixed, hollow-cylindrical contact pieces 3, 4 and a movable, first bridging contact piece 5.
- the two hollow cylindrical contact pieces 3, 4 are tubular, with a common longitudinal axis.
- Two ends of the Kunststoffstü ⁇ bridges 3, 4 are arranged opposite one another, with a gap between the ends, which is formed in its size depending on the maximum voltage to be switched, for a high dielectric strength in the off state without voltage flashovers.
- the ends are coated with a erosion-resistant material, for. As with Teflon or PCTFE to minimize burn-off by arcing when switching.
- the ends of the hollow cylindrical contact pieces 3, 4 are each in the form of a nozzle, ie with an inner cross-section tapering towards the end. Arcing occurring during switching can be effectively blown or extinguished by extinguishing gas, in particular SF 6 , via the nozzles.
- the first and the second contact piece 3, 4 are each spatially fixed or fixed on the opposite side opposite the opposite ends, that is, not arranged to be movable in the double-nozzle switch 1.
- the contact pieces 3, 4 are mirror-symmetrical, with a vertical mirror axis to the longitudinal axis of the hollow cylindrical contact pieces 3, 4, arranged and formed and have the same cross sections, in particular a same outer cross section.
- the hollow ⁇ cylindrical contact pieces can be formed with a diameter of 50 to 200 mm, in particular 80 to 150 mm.
- the contact pieces 3, 4 are made of a highly conductive Me ⁇ tall, especially copper, aluminum or steel. Contact surfaces with other contacts may be silver plated and / or include carbon for good electrical contact with little electrical loss over the contact.
- the first bridging contact piece 5 is hollow-cylindrical or tubular, with an inner diameter which essentially corresponds to the outer diameter of the first and second contact piece 3, 4.
- the first Studentsbrü ⁇ ckungsWalleterie 5 is arranged movable along the longitudinal axis. In the switched state, the first Matterbrü ⁇ ckungsWalleterie 5 is pulled over the ends of the contact pieces 3, 4 and includes these in space.
- At one end of the first bridging contact 5 is connected via elements of a kinematic chain with a drive, which is not shown for simplicity hal ⁇ over in the figures. When switching a switching movement on the first bridging contact ⁇ piece 5 is transmitted via the drive and elements of the kinematic chain.
- contact elements may be arranged in the form of contact fingers, for a good electrical contact between the first bridging contact piece 5 and the first contact piece 3 of the first contact 2. In the region of the second contact piece 4 of the first contact 2 in the on state, can at the first bridging contact piece 5 also z.
- contact elements in the form of contact fingers, springs and / or sliding rings may be arranged for a good electrical contact between the first bridging contact piece
- a compres sion ⁇ device 10 for quenching gas in particular SF 6 or dry air, arranged.
- the compression device 10 has a stationary compression piston 11 and a movable compression cylinder 12.
- the compression piston 11 is arranged rotationally symmetrically about the second contact piece 4, between the second contact piece 4 and the compression cylinder 12.
- the compression cylinder 12 comprises at the end, which faces the first contact piece 3, a bottom 13 which is fixed to the compression cylinder 12 is connected and in particular fluid-tight with the first contact piece 3 concludes.
- the bottom 13 is arranged with the Kompressi ⁇ onszylinder 12 movable along the longitudinal axis.
- the soil consists of a particular erosion-resistant, electrically insulating material, eg.
- a second contact 6 comprises in the on state spatially the first contact 2 and the compression device 10.
- the second contact 6 has analogous to the first contact 2 two fixed contact pieces 7, 8, that is, a third and a fourth spatially fixed contact piece 7, 8 and a second movable bridging contact piece 9 on.
- the third contact piece 7 and the fourth contact piece 8 are tubular or hollow cylindrical, and analogous to the first and second contact piece 3, 4 mirror-symmetrically along a mirror axis perpendicular to the common longitudinal ⁇ axis of the contact pieces 7, 8, formed and arranged.
- the contact pieces 7, 8 are arranged with one end against ⁇ opposite and spatially fixedly mounted to the respective other end, in particular a tube end in the double nozzle switch 1 and fixed.
- the first contact piece 3 is arranged centrally.
- the second contact piece 4 is arranged centrally.
- the second bridging contact piece 9 is hollow-cylindrical or tubular with an outer diameter, wel is substantially equal to the inner diameter of the contact pieces 7, 8 of the second contact 6.
- the second bridging contact piece 9 is arranged in particular as a sliding contact in the contact pieces 7, 8 of the second contact 6 movably.
- the second bridging contact piece 9 connects the gap between the third contact piece 7 and the fourth contact piece 8, as a result of which the second contact 6 is electrically closed.
- the movable second bridging contact piece 9 slides when switching in the fourth contact piece 8 and protrudes in the on state with one end positively in the third contact piece 7.
- Contact devices such. B.
- contact fingers, slip rings and / or springs can be arranged for a good electrical contact between the second bridging contact piece 9 and the third contact piece 7 and / or between the second bridging contact piece 9 and the fourth contact piece 8, for a good electrical contact between the contact pieces
- the compression device 10 is arranged in the radial direction between the first and second contacts 2, 6.
- the second bridging contact piece 9 can in particular be positively connected to the movable compression cylinder 12 and can be connected via elements of the kinematic chain
- Switching be moved, or be connected as a movable contact piece 9 directly with elements of the kinematic chain to move when switching.
- the double nozzle switch 1 of Figure 1 is shown schematically in sectional view in the off state, with two open contacts 2, 6.
- the first contact 2 and second contact 6 electrically and / or mechanically interrupted.
- the first over-brückungsAuth 5 and the second MatterbrückungsAuth- piece 9 and the compression device 10 with moving the compression cylinder 12 and the bottom 13 of the Kompressionszy- Linders 12 are removed from the first contact piece 3 and drit ⁇ th contact piece 7 in particular completely around the second contact piece 4 around arranged on the side of Doppeldü ⁇ senschalters 1, on which the fourth contact piece 8 befin ⁇ det.
- the first contact 2 When switching on, the first contact 2 is closed by moving the first bridging contact piece 5 from the second contact piece 4 towards the first contact piece 3 until electrical contact between the contact pieces 3, 4, 5, in particular the contact pieces 3 and 5, exists.
- the hollow cylinder-shaped contact pieces 3, 4, 5 form in the region of the first contact 2, in particular a closed tube.
- the compression cylinder 12 is pulled or pushed, ie moved, with the bottom 13 over the first contact piece 3 with the first bridging contact piece 5, and quenching gas flows through the hollow cylindrical first and second An arc, which can arise when switching between the first bridging contact piece 5 and the first contact piece 3 in the particular closed tube, can be extinguished by a gas flow.
- the contacts 2, 6 are closed and the current flow takes place via the first and second contacts 2, 6.
- the double-nozzle switch 1 is switched on, as shown in FIG. 1, and a high current flow through both contacts 2, 6 in the region of in particular 500 kA is possible.
- the first contact 2 is opened, by Be ⁇ because of the first bridging contact piece 5 from the first Kon ⁇ tact piece 3 away, the second contact piece 4 back to an electrical contact between the contact pieces 3, 4, 5, in particular the contact pieces 3 and 5 is safely interrupted, with a distance of the contact pieces 4, 5 of the contact ⁇ piece 3 depending on the maximum applied voltage without electrical flashovers may occur.
- Between the contact pieces 4, 5 and the contact piece 3 creates a particular filled with extinguishing gas gap.
- the second contact 6 is opened.
- the second bridging contact piece 9 is moved in particular from the third contact 7 in the direction of, and in particular in the fourth contact piece 8 until no electric and especially not me ⁇ ical more contact between the MatterbrückungsAuth- piece 9 and the third contact 7 consists, in particular the bridging contact piece 9 is inserted into the fourth contact piece 8.
- the contacts 2, 6 are open and the flow of current through the first and second contacts 2, 6, ie the double-nozzle switch 1 is interrupted.
- the double-jet switch 1 is switched off, as shown in FIG. 2, and a high dielectric strength of the disconnected state of the two contacts 2, 6 in the region of, in particular, up to
- the embodiments described above can realiseei ⁇ Nander be combined and / or can be combined with the prior art.
- the double nozzle switch 1 of FIGS. 1 and 2 is designed to switch for one pole.
- three-pole design in particular three juxtaposed double nozzle switch 1 according to the invention are used.
- two or more double-nozzle switches 1 can be switched in parallel for one pole.
- two or more double-nozzle switch 1 can be connected in series for one pole. It can for insulating elements, such.
- plastics are used.
- burn-resistant materials eg. B. at the ends of the contact pieces 3, 4, graphite or other materials can serve.
- the contact pieces 3, 4, 5, 7, 8, 9 can be made in one piece or from several pieces.
- contact and / or sliding devices such as contact fingers, metal or
- Teflon rings or coatings of the contact pieces 3, 4, 5, 7, 8, 9 and / or the compression device 10 comprises be. Different movement and / or switching sequences are possible, in particular during the movement of the bridging contact pieces 5 and 9 and of the compression cylinder 12 with bottom 13. Elements of the double jet switch 1 can also be moved independently of each other, in particular by means of transmission elements offset in time or simultaneously.
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Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017206748.9A DE102017206748A1 (de) | 2017-04-21 | 2017-04-21 | Doppeldüsenschalter mit Außenkontakt und Verfahren zum Schalten des Doppeldüsenschalters |
PCT/EP2018/057098 WO2018192732A1 (fr) | 2017-04-21 | 2018-03-21 | Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3586350A1 true EP3586350A1 (fr) | 2020-01-01 |
Family
ID=61952626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18716907.3A Pending EP3586350A1 (fr) | 2017-04-21 | 2018-03-21 | Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buse |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3586350A1 (fr) |
CN (1) | CN110537240A (fr) |
BR (1) | BR112019020565B1 (fr) |
DE (1) | DE102017206748A1 (fr) |
WO (1) | WO2018192732A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018222782A1 (de) * | 2018-12-21 | 2020-06-25 | Siemens Aktiengesellschaft | Doppeldüsenschalter und Verfahren zum Schalten hoher Ströme in der Hochspannungstechnik |
DE102019217600B3 (de) * | 2019-11-14 | 2021-01-14 | Dehn Se + Co Kg | Kurzschließervorrichtung |
CN112951637A (zh) * | 2021-02-05 | 2021-06-11 | 方玄 | 一种集成式轻量型运动控制箱 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2211617C3 (de) * | 1972-03-07 | 1981-02-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Druckgasschalter |
JPS5546426A (en) * | 1978-09-29 | 1980-04-01 | Fuji Electric Co Ltd | Gas breaker |
DE3224778C2 (de) * | 1981-03-30 | 1986-06-05 | Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka | Elektrische Schaltkammer mit Hilfslichtbogen für einen autopneumatischen Druckgasschalter |
EP0061992B1 (fr) * | 1981-03-30 | 1986-11-20 | Ernst Slamecka | Interrupteur à piston de soufflage pour haute tension |
CN1008415B (zh) * | 1985-09-30 | 1990-06-13 | Bbc勃朗勃威力有限公司 | 气吹开关 |
DE19519992C2 (de) | 1995-05-24 | 2002-03-21 | Siemens Ag | Schaltstrecke für einen mit einem Löschgas arbeitenden Hochspannungs-Leistungsschalter |
-
2017
- 2017-04-21 DE DE102017206748.9A patent/DE102017206748A1/de active Pending
-
2018
- 2018-03-21 WO PCT/EP2018/057098 patent/WO2018192732A1/fr unknown
- 2018-03-21 EP EP18716907.3A patent/EP3586350A1/fr active Pending
- 2018-03-21 CN CN201880025976.0A patent/CN110537240A/zh active Pending
- 2018-03-21 BR BR112019020565-9A patent/BR112019020565B1/pt active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
BR112019020565B1 (pt) | 2024-03-12 |
CN110537240A (zh) | 2019-12-03 |
WO2018192732A1 (fr) | 2018-10-25 |
BR112019020565A2 (pt) | 2020-04-28 |
DE102017206748A1 (de) | 2018-10-25 |
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Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG |