EP0696040B1 - Druckgasschalter - Google Patents

Druckgasschalter Download PDF

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Publication number
EP0696040B1
EP0696040B1 EP95810434A EP95810434A EP0696040B1 EP 0696040 B1 EP0696040 B1 EP 0696040B1 EP 95810434 A EP95810434 A EP 95810434A EP 95810434 A EP95810434 A EP 95810434A EP 0696040 B1 EP0696040 B1 EP 0696040B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
breaker according
erosion
contact member
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.)
Expired - Lifetime
Application number
EP95810434A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0696040A1 (de
Inventor
Werner Dr. Hofbauer
Joachim Stechbarth
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 AG Germany
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6524623&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0696040(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0696040A1 publication Critical patent/EP0696040A1/de
Application granted granted Critical
Publication of EP0696040B1 publication Critical patent/EP0696040B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/70—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
    • H01H33/904—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 characterised by the transmission between operating mechanism and piston or movable contact
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
    • 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
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
    • 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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc

Definitions

  • the invention is based on a gas pressure switch according to the introductory part of claim 1.
  • Such Compressed gas switch is preferred as a circuit breaker in high voltage networks used.
  • the invention relates to a prior art, as derived from a report by H.Toda et al. "Development of 550 kV 1-break GCB (part II) - Development of Prototype "IEEE 92 SM 578-5 PWRD results Technology is a gas pressure switch with two in an insulating gas filled Chamber arranged movable contacts and with a piston-cylinder compression device that generates extinguishing gas when switched off described. This switch will Driving energy from a first of two contact pieces via one as a speed converter lever mechanism and a Transfer the isolating rod to a second of the two contact pieces. When switching off, the contact pieces are in opposite Directions moved. This results in a high contact separation speed reached.
  • US 4,973,806 A is a gas pressure switch with a switching chamber described in which during a switching operation by a Power transmission device driving energy from a mobile Contact via an insulating nozzle on a movable Transfer the erosion contact of a fixed contact becomes.
  • This pressure gas switch stands out unchanged retained from the moving contact and the insulating nozzle certain extinguishing geometry and low drive energy a high separation speed of the erosion contacts, whereby when switching off within a very short time between the Burning contacts a large insulating distance is formed.
  • the invention as set out in claim 1 lies the task is based on a gas switch at the beginning mentioned type while maintaining a high contact separation speed the required drive energy and the Reduce the diameter of the insulating gas-filled chamber.
  • the gas pressure switch according to the invention is characterized by this from that it has only low drive energy and low Driving force needed to turn off between the two Switching elements have a dielectric load-bearing insulating section to build. This is primarily a result of the appropriate arrangement of the speed converter on the force-absorbing contact.
  • the isolating section can then be actuated appropriately the functionally essential parts, such as the erosion and nominal current contact as well as shields, the force-absorbing contact extremely fast with a comparatively low driving force be formed.
  • the insulating gas-filled Chamber transverse to the direction of movement of the contact pieces small diameter.
  • the pressure gas switch according to the invention can therefore be particularly space-saving and compact are and are also characterized by comparative low product costs.
  • Figures 1 to 4 show this a top view of an axially guided cut a contact arrangement, each in one of four Embodiments of the compressed gas switch according to the invention is provided, the left part of each figure Gas switch is turned on and in the right part every character is just turned off.
  • two contact pieces 1, 2 are the Contact arrangement of a gas pressure switch shown. This Switching pieces are in an insulating gas filled, not shown and a cylindrical wall made of insulating material having switching chamber of a gas pressure switch arranged and are along or along an axis 3 with each other Intervention can be brought. Both contact pieces are essentially rotationally symmetrical and are each with a Power supply 4, 5 electrically connected. Both contact pieces 1 and 2 each have a nominal current 6 or 7 and an erosion contact 8 or 9.
  • the switching piece 1 can from a not shown, for example the erosion contact 8 acting drive along the axis 3 be moved and has a coaxial between rated current 6 and erosion contact 8 arranged insulating nozzle 10 with a Nozzle constriction 11 and one for storing compressed gas provided annular pressure chamber 12, which has a between the erosion contact 8 and the inner wall of the insulating nozzle 10 arranged ring channel 13 and the nozzle constriction 11 with a Exhaust chamber 14 is connectable.
  • the pressure chamber 12 is one radially outward and at the erosion contact 8 attached floor 15, the erosion contact 8 and one on the Bottom 15 attached hollow cylinder 16 with an upward conical tapered part.
  • the hollow cylinder 16 is off electrically conductive material is formed.
  • the floor is preferably also made of electrically conductive material, so as to be an electrically conductive connection between the shield 17 of the power supply 4 and the erosion contact 8 to ensure. If necessary such a connection can be omitted.
  • the rated current contact 6 is then advantageously star-shaped arranged, guided through the ring channel 13 conductor parts on Burn-up contact 8 attached.
  • the Insulating nozzle attached with one end such that the Fastening point of the insulating nozzle 10 coaxially from the nominal current contact 6 is surrounded.
  • the nominal current contact 6 then acts as Shielding and reduces the electric field at the Fastening point of the insulating nozzle 10.
  • a check valve 18 arranged in the bottom 15 of the pressure chamber 12 in the bottom 15 of the pressure chamber 12 , which is a gas flow from a compression space 19 a piston-cylinder compression device in the pressure chamber 12 allows and prevented in the opposite direction.
  • a piston-cylinder compression device in the pressure chamber 12 allows and prevented in the opposite direction.
  • the Compression chamber 19 is sliding in a gastight manner in the Shield 17 guided floor 15, the shield 17, one in shield 17 and a pressure control device 20 load-bearing cylinder bottom and the gas-tight sliding through the Cylinder bottom guided erosion contact 8 is formed.
  • the erosion contact 8 is preferably designed as a nozzle and has at its free end one of erosion-resistant contact material formed nozzle opening, in the on position (left part of Fig.1) the one designed as a pin Burning contact 9 of the contact piece 2 to form a frictional connection Contact overlap has penetrated.
  • the consumable end of the drive has the erosion contact 8 Gas outlet openings that line its interior with the exhaust space 14 connect.
  • the insulating nozzle 10 carries on the switching piece 2 facing End of a shield 21 coaxially surrounding the insulating nozzle 10. This shield reduces the electric field in the dielectric and mechanically highly loaded upper end of the insulating nozzle 10.
  • the shield 21 carries two parallel to the axis 3 arranged racks 22 of an element which is the transmission one generated by the drive and via the contact piece 1 force in the insulating nozzle 10 to the switching piece 2 is used.
  • the racks 22 are part of a rack and pinion gear two gear wheels 23 rotatably mounted about fixed axes, each of which on the one hand one of the two racks 22 and on the other hand, a toothed rack 24 provided with double teeth combs, which is arranged parallel to axis 3 and in the Abbrandcard 9 or a non-positively connected to this Part is incorporated.
  • the drive from the switch 1, the insulating nozzle 10 and the transmission element designed as a rack and pinion gear the erosion contact 9 is guided by a force another transmission element acting current conductor 25, which the erosion contact 9 rigid with the nominal current contact 7 and / or a shield of this contact couples to the nominal current contact 7 led.
  • the nominal current contact 7 and / or its Shielding are hollow cylindrical and are on the External surface slidably contacted with a fixed Shield 26 of the switching element 2 acting hollow cylindrical Part of the power supply 5.
  • the rated current contact 7 and / or its shield surround the in the on position Burning contact 8, the insulating nozzle 10 and the nominal current contact 6 coaxial and shield the erosion contact in the switch-off position 9 and the force rejection of the insulating nozzle 10 in the area the shield 21 in addition.
  • the electrical field is switched off by the Nominal current contact 7 or its shielding at the location of the insulating nozzle 10 reduced even further since the nominal current contact 7 the shield 21 encloses.
  • Another improvement of the Course of the electrical field between the separated Contact pieces 1, 2 is replaced by contact pieces 1, 2 surrounding shields 17 and 26 reached.
  • Gas pressure switch is a multiple movement of Parts of the contact piece 2 achieved in that a transmission element provided with two converters connected in series is. Both converters are designed as gearboxes and are are interconnected such that they are non-linear Transfer movement to contact 2.
  • a first one both gears have a rotatable around a fixed axis stored gear 30 and a corresponding to the Racks 22 in the embodiment of Figure 1 on the Shield 17 attached and arranged parallel to the axis Rack 31, which cooperates with the gear 30.
  • a the second of the two transmissions contains a crank with one Crank arm 32, one end of the gear 30 and the the other end is articulated at the top of the erosion contact 9.
  • the thrust crank executes an angle of rotation of less than 180 during a switching operation
  • the erosion contact 9 and the rated current contact 7 and / or its shielding are displaced in a one-sided, non-linear movement in opposite directions to the first contact piece 1.
  • the non-linear movement is expediently carried out in such a way that the contact separation speed is high at the moment when the erosion contacts are separated, and that the contact separation speed is then reduced, for example after a separation distance corresponding to the required insulation distance has been reached.
  • This can advantageously be achieved in that the crank arm 32 of the push crank forms a relatively small angle with the axis 3 in the switched-on position, at least the deflection ⁇ c of the push crank should be less than 45.
  • the switching piece 2 Since the crank arm 32 is then in the region of a dead position of the push crank, the switching piece 2 is initially accelerated slowly. This favors the use of a small drive. After opening the nominal current contacts 6, 7, the angle between the crank arm 32 and the axis 3 increases increasingly. The opening of the erosion contacts 8, 9 then takes place at a high separation speed. If the insulation distance between the erosion contacts 8, 9 is sufficiently large, the push crank approaches its top dead center. The contact separation speed is then considerably reduced. The lengthening of the switching arc 27 is delayed by such a sequence of movements and thus the energy converted in the switching arc and conveyed into the exhaust space 14 is considerably reduced.
  • the sliding crank has, in addition to the crank arm 32, a further crank arm 33, one end of which is articulated on the gear 30 and the other end of which is connected to the current conductor 25.
  • the current conductor 25 is electrically conductively connected to the erosion contact 9 via a sliding contact (not shown).
  • the speeds of the erosion contact 9 and the rated current contact 7 can be determined relative to one another by suitable articulation of the crank arms 32 and 33. It can be seen from FIG. 3 that the crank arm 32 is hinged on the outside and the crank arm 33 is articulated on the gearwheel 30 near the axis, and that, in the switched-on position, the articulation points are in the region of the dead position of the push crank and with the axis 3 a relatively small angle Include ⁇ c .
  • the erosion contact 9 and the rated current contact 7 are initially accelerated slowly in accordance with the embodiment according to FIG. This favors the use of a small-sized drive, which can use its force mainly to overcome contact forces caused by friction.
  • the angle ⁇ c between the articulation points of the crank arms 32 and 33 and the axis 3 increases increasingly. Because of the greater distance of the articulation point of the crank arm 32 from the axis of the gear wheel 30, the speed of the erosion contact 9 increases visibly compared to the speed of the rated current contact 7.
  • Driving force is now mainly used to overcome contact forces between the erosion contacts 8, 9 caused by frictional engagement and to accelerate the contact piece 2.
  • a large part of the force applied to accelerate the contact piece 2 serves to accelerate the erosion contact 9.
  • the erosion contacts 8, 9 then open at a high separation speed.
  • the nominal current contacts 6, 7 are at a distance from one another in which reignitions can be avoided with certainty. If the insulation distance between the erosion contacts 8, 9 and the rated current contacts 6, 7 is sufficiently large, the push crank approaches its top dead center and the contact separation speed is then considerably reduced, as in the embodiment according to FIG. 2. Finally, the crank is guided in a position where a comparatively large angle ⁇ o forms in which they accordance with according to the embodiment of Figure 2 with the axis of the third
  • gear 30 is coupled to a coupling disk whose Radius is larger than the radius of the gear 30, so can by moving the articulation point of the crank arm 32 to an absolute speed of the erosion contact 9 can be achieved, which is higher than the absolute speed the shield 21 of the insulating nozzle 10 and the erosion contact 8.
  • the absolute speed of the erosion contact 8 between the absolute speeds of the erosion contact 9 and nominal current contact 7 are or even smaller than each of these two speeds. Then it is above one compressed gas from the compression space 19 available, causing a longer blowing of the switching arc 27 is made possible.
  • FIG Gas pressure switches are those in connection with the Embodiment described according to Figure 3 different Burning contact 9, rated current contact 7 and Shielding the insulating nozzle 10 by a gear transmission achieved, which in addition to that in the embodiment according to 1 racks 22 and gears 23 provided in pairs additionally two gears 34 and 35 and two others Racks 36 has.
  • the two of the racks 22 driven gears 23 each roll on one of the from two gears 34, which in turn each on one of the two racks 36 and one of the two gears Roll off 35.
  • the gears 35 each have a common one Axis with gears 37, which are each on opposite sides on the with the erosion contact 9 Roll connected rack 24.
  • the racks 22 are guided downward while doing so the gears 23 rotated.
  • Each of the gears 23 now turns that assigned gear 34 in the opposite direction.
  • the racks 36 and the attached to it Rated current contact 7 shifted upwards (arrows in Fig. 4).
  • the gears 35 and thus also now the gears 37 rotated such that the rack 24 and so that the erosion contact 9 is also moved upwards (Arrows in Fig. 4).
  • the gears can easily run at any speed of erosion contact 9 and nominal current contact 7 relative to each other and to the speed of the drive or the Shield 21 can be achieved.

Landscapes

  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP95810434A 1994-08-01 1995-06-29 Druckgasschalter Expired - Lifetime EP0696040B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4427163A DE4427163A1 (de) 1994-08-01 1994-08-01 Druckgasschalter
DE4427163 1994-08-01

Publications (2)

Publication Number Publication Date
EP0696040A1 EP0696040A1 (de) 1996-02-07
EP0696040B1 true EP0696040B1 (de) 1998-06-03

Family

ID=6524623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810434A Expired - Lifetime EP0696040B1 (de) 1994-08-01 1995-06-29 Druckgasschalter

Country Status (8)

Country Link
US (1) US5578806A (zh)
EP (1) EP0696040B1 (zh)
CN (1) CN1069436C (zh)
AU (1) AU2719195A (zh)
BR (1) BR9503510A (zh)
CA (1) CA2154939A1 (zh)
DE (2) DE4427163A1 (zh)
ZA (1) ZA956171B (zh)

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Publication number Priority date Publication date Assignee Title
DE19858793A1 (de) * 1998-12-18 2000-06-21 Alstom Energietechnik Gmbh Druckgasschalter
US9748059B2 (en) 2013-01-22 2017-08-29 Siemens Aktiengesellschaft Switching device arrangement
US9865417B2 (en) 2013-07-30 2018-01-09 Abb Schweiz Ag Circuit breaker

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CN102484014B (zh) * 2009-08-20 2015-10-14 西门子公司 用于开关设备的隔离开关
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CN102437512B (zh) * 2011-09-09 2013-02-13 华中科技大学 气体开关
DE102012200238A1 (de) * 2012-01-10 2013-07-11 Siemens Aktiengesellschaft Elektrisches Schaltgerät
EP2629313A1 (en) * 2012-02-17 2013-08-21 ABB Technology AG Gas-insulated circuit breaker with nominal contact shielding arrangement
CN102820176B (zh) * 2012-08-14 2015-03-25 河南平高电气股份有限公司 一种双动式高压六氟化硫断路器及其双动传动装置
CN102820177B (zh) * 2012-08-14 2015-04-01 河南平高电气股份有限公司 一种高压六氟化硫断路器及其双动传动装置
US20140175061A1 (en) 2012-12-20 2014-06-26 Abb Technology Ag Electrical switching device with a triple motion contact arrangement
DE102013200913A1 (de) 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Schaltanordnung
CN104704592B (zh) * 2013-02-07 2017-01-18 厦门华电开关有限公司 开关传动机构和功率开关
DE102015214485A1 (de) * 2015-07-30 2017-02-16 Siemens Aktiengesellschaft Anordnung und ein Verfahren zum Antreiben einer elektrischen Schalteinrichtung
KR101702538B1 (ko) * 2015-08-20 2017-02-06 현대중공업 주식회사 가스절연 차단기
KR101722976B1 (ko) * 2015-08-20 2017-04-05 현대중공업 주식회사 가스절연 차단기
DE202015106726U1 (de) 2015-12-10 2016-01-14 Abb Technology Ag Gasisolierter Hochspannungsschalter
CN106504940A (zh) * 2016-12-23 2017-03-15 中国西电电气股份有限公司 一种断路器的双动触头传动装置
CN112815684B (zh) * 2021-02-02 2022-12-09 江西春兴新能源有限公司 一种蓄电池固化后极板的连续微波干燥工艺方法
CN114678239B (zh) * 2021-12-24 2023-09-29 河南平高通用电气有限公司 一种直流断路器的动侧触头组件及直流断路器
CN115662849B (zh) * 2022-10-31 2023-12-01 正泰电气股份有限公司 触头结构及具有其的断路器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19858793A1 (de) * 1998-12-18 2000-06-21 Alstom Energietechnik Gmbh Druckgasschalter
US9748059B2 (en) 2013-01-22 2017-08-29 Siemens Aktiengesellschaft Switching device arrangement
US9865417B2 (en) 2013-07-30 2018-01-09 Abb Schweiz Ag Circuit breaker

Also Published As

Publication number Publication date
EP0696040A1 (de) 1996-02-07
ZA956171B (en) 1996-03-19
DE4427163A1 (de) 1996-02-08
CA2154939A1 (en) 1996-02-02
AU2719195A (en) 1996-02-15
US5578806A (en) 1996-11-26
CN1069436C (zh) 2001-08-08
BR9503510A (pt) 1996-05-28
CN1128892A (zh) 1996-08-14
DE59502394D1 (de) 1998-07-09

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