EP3111460B1 - Mechanical linkage circuit breaker - Google Patents

Mechanical linkage circuit breaker Download PDF

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Publication number
EP3111460B1
EP3111460B1 EP15709129.9A EP15709129A EP3111460B1 EP 3111460 B1 EP3111460 B1 EP 3111460B1 EP 15709129 A EP15709129 A EP 15709129A EP 3111460 B1 EP3111460 B1 EP 3111460B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
mechanical linkage
load
guiding means
linkage circuit
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.)
Active
Application number
EP15709129.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3111460A1 (en
Inventor
Thomas Chyla
Yin Chuan JIA
Xian Yong ZHOU
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3111460A1 publication Critical patent/EP3111460A1/en
Application granted granted Critical
Publication of EP3111460B1 publication Critical patent/EP3111460B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H33/008—Pedestal mounted switch gear combinations
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/46—Interlocking mechanisms
    • H01H33/52—Interlocking mechanisms for interlocking two or more switches
    • 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
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H9/563—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle for multipolar switches, e.g. different timing for different phases, selecting phase with first zero-crossing

Definitions

  • the present invention relates to a mechanical linkage circuit breaker, in particular to a three-phase mechanical linkage high-voltage circuit breaker with a guiding means.
  • a circuit breaker is an important switch device in an electrical system, and is responsible for two tasks, namely control and protection. Its performance plays a major role in determining whether the electrical system can operate safely. As people demand higher quality in the supply of power, the reliability and stability of circuit breakers are subject to ever higher requirements. This is particularly true in the case of mechanical linkage circuit breakers, the actuating mechanism of which is an important constituent part thereof, one of the key components which determine the opening/closing performance of the mechanical linkage circuit breaker. The performance of the actuating mechanism is directly related to the performance of the mechanical linkage circuit breaker.
  • the object of the present invention is to provide a mechanical linkage circuit breaker with high reliability and stability.
  • a mechanical linkage circuit breaker comprises a crossbeam and a pull rod, wherein the pull rod is disposed in the crossbeam.
  • the mechanical linkage circuit breaker also comprises a guiding means.
  • the guiding means comprises two load-bearing elements and two guide sleeves, wherein the load-bearing elements are fixed to the crossbeam and located on two sides of the pull rod.
  • the guide sleeves surround the load-bearing elements, respectively, in a rotatable fashion and are spaced apart from the pull rod.
  • the two load-bearing elements are bolts, and the guide sleeves are tubular.
  • the guiding means also comprises two first washers disposed between the load-bearing elements and the crossbeam.
  • the guiding means also comprises two nuts, and the load-bearing elements screw into the corresponding nuts after passing through the corresponding guide sleeves.
  • the guiding means also comprises two bushes disposed between the load-bearing elements and the guide sleeves.
  • the guiding means also comprises two second washers disposed between the nuts and the bushes.
  • the guiding means also comprises a frame, with a channel inside the frame, and the guide sleeves disposed in the channel.
  • Two through-holes are formed on one side of the frame, while two threaded holes are formed on the opposite side.
  • the load-bearing elements are screwed into the corresponding threaded holes after passing through the crossbeam, the corresponding through-holes and the corresponding guide sleeves in sequence.
  • the frame is made of metal.
  • the two guide sleeves are made of Teflon.
  • two load-bearing elements are installed on the crossbeam and located on two sides of the pull rod, while two guide sleeves surround the two load-bearing elements, respectively, in a rotatable fashion and are spaced apart from the pull rod.
  • This arrangement can not only prevent deformation and destabilization of the pull rod, but also reduce friction caused by relative movement between the guide sleeves and the pull rod, thereby reducing wear of the guide sleeve material. Not only is it ensured that the distance between each guide sleeve and the pull rod is within a certain range in order to guarantee the reliability and stability of the mechanical linkage circuit breaker, but costs are also reduced.
  • the guiding means is easy to install and avoids jamming, etc. which might occur in the course of operation.
  • Fig. 1 shows a schematic diagram of a mechanical linkage circuit breaker 100 of the present invention.
  • the mechanical linkage circuit breaker 100 comprises a crossbeam 110, a first phase 120, a second phase 130, a third phase 140, a pull rod 150 and a guiding means 160.
  • the first phase 120, second phase 130 and third phase 140 are disposed on the crossbeam 110.
  • the pull rod 150 is disposed in the crossbeam 110 and connects the adjacent first phase 120 and second phase 130 together, and the second phase 130 and third phase 140 together.
  • the guiding means 160 is also disposed in the crossbeam 110 and is used to guide the pull rod 150.
  • the number and position of the guiding means 160 may be varied according to the actual application; for example, one guiding means 160 may be provided between the first phase 120 and second phase 130, while another guiding means 160 is provided between the second phase 130 and third phase 140, or a greater number of guiding means 160 may be used.
  • the guiding means 160 comprises two load-bearing elements and two guide sleeves.
  • the guiding means 160a comprises two load-bearing elements 163a and two guide sleeves 164a
  • the guiding means 160b comprises two load-bearing elements 163b and two guide sleeves 164b.
  • the guide sleeves 164a and 164b can rotate relative to the load-bearing elements 163a and 163b to reduce friction caused by relative movement between the guide sleeves 164a and 164b and the pull rod 150.
  • the two guide sleeves 164a and 164b are preferably made of a material such as Teflon.
  • the load-bearing elements are fixed to the crossbeam 110 and located on two sides of the pull rod 150, while the guide sleeves surround the load-bearing elements, respectively, in a rotatable fashion and are spaced apart from the pull rod.
  • spaced apart means that there is a very small gap between each guide sleeve and the pull rod, such that when the pull rod is not deformed or is only slightly deformed, no contact occurs between the pull rod and each guide sleeve, whereas when deformation of the pull rod exceeds a reasonable range, the pull rod is supported through contact with a guide sleeve.
  • the mechanical linkage circuit breaker with a guiding means according to the present invention can not only prevent deformation and destabilization of the pull rod, but also reduce friction caused by relative movement between the guide sleeves and the pull rod, thereby reducing wear of the guide sleeve material.
  • each guide sleeve and the pull rod is within a certain range in order to guarantee the reliability and stability of the mechanical linkage circuit breaker, but costs are also reduced.
  • the guiding means is easy to install and avoids jamming, etc. which might occur in the course of operation.
  • the two load-bearing elements 163a and 163b are bolts, while the guide sleeves 164a and 164b are tubular.
  • the two load-bearing elements 163a and 163b may also be other components capable of fixing the guide sleeves 164a and 164b in position, as long as they allow relative rotation of the guide sleeves 164a and 164b, but when bolts are used, installation is simple and the cost is low.
  • the guiding means 160a also comprises two nuts 170; the load-bearing elements 163a are screwed into the corresponding nuts 170 after passing through the corresponding guide sleeves 164a.
  • a bush 165 may be provided between each load-bearing element 163a and guide sleeve 164a, in order to mount the load-bearing element 163a firmly on the crossbeam 110.
  • the bush 165 surrounds the load-bearing element 163a, being provided between the load-bearing element 163a and guide sleeve 164a. This allows the nut 170 to be used to mount the load-bearing element 163a firmly on the crossbeam 110.
  • a first washer 1630 may be provided between each load-bearing element 163a and the crossbeam 110, while a second washer 171 is provided between each nut 170 and bush 165.
  • bush limiter 1651 between each bush 165 and second washer 171, or if there is no second washer 171, to provide a bush limiter 1651 directly between each bush 165 and nut 170.
  • the bush limiter 1651 can limit the position of the guide sleeve 164a, or if there is no bush limiter 1651, a second washer of larger diameter than the bush 165 can limit the position of the guide sleeve 164a.
  • the bush limiter 1651 may also form a single piece together with the bush 165.
  • the bush limiter 1651 and bush 165 are preferably made of metal. In the embodiment shown in Fig.
  • the guiding means 160b also comprises a frame 175, with a channel 1753 inside the frame 175, and the guide sleeves 164b disposed in the channel 1753.
  • Two through-holes 1751 are formed on one side of the frame 175, while two threaded holes 1756 are formed on the opposite side.
  • the load-bearing elements 163b are screwed into the corresponding threaded holes 1756 after passing through the crossbeam 110, the corresponding through-holes 1751 and the corresponding guide sleeves 164b in sequence.
  • the frame 175 is preferably made of a metal such as aluminum.
  • Providing a frame 175 enhances the supporting capability of the guiding means 160 in a direction substantially perpendicular to the length direction of the pull rod 150, so that the pull rod 150 is unlikely to deform, ensuring that the mechanical linkage circuit breaker 100 is more reliable and stable.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP15709129.9A 2014-02-27 2015-02-26 Mechanical linkage circuit breaker Active EP3111460B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410069542.4A CN104882338B (zh) 2014-02-27 2014-02-27 机械联动断路器
PCT/EP2015/054077 WO2015128435A1 (en) 2014-02-27 2015-02-26 Mechanical linkage circuit breaker

Publications (2)

Publication Number Publication Date
EP3111460A1 EP3111460A1 (en) 2017-01-04
EP3111460B1 true EP3111460B1 (en) 2018-05-23

Family

ID=52649000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15709129.9A Active EP3111460B1 (en) 2014-02-27 2015-02-26 Mechanical linkage circuit breaker

Country Status (5)

Country Link
EP (1) EP3111460B1 (es)
CN (1) CN104882338B (es)
MX (1) MX371352B (es)
RU (1) RU2641308C1 (es)
WO (1) WO2015128435A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112614728A (zh) * 2020-12-29 2021-04-06 上海西门子高压开关有限公司 用于断路器的三相机械联动装置及断路器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117092A1 (de) * 2001-04-06 2002-10-10 Alstom Sachsenwerk Gmbh Betätigungsmittel zum Betätigen von Schaltstrecken eines Leistungsschalters einer elektrischen Schaltfeldanordnung
RU2287200C1 (ru) * 2005-10-20 2006-11-10 Общество с ограниченной ответственностью "Радиочастотные Идентификационные Технологии" Выключатель нагрузки высокого напряжения
CN201204167Y (zh) * 2008-05-12 2009-03-04 河南平高电气股份有限公司 三极机械联动型高压断路器
US8525054B2 (en) * 2010-12-17 2013-09-03 General Electric Schenectady Discharge mechanism for circuit breaker
CN202633192U (zh) * 2012-03-23 2012-12-26 平高集团有限公司 一种机械联动断路器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2015128435A1 (en) 2015-09-03
CN104882338B (zh) 2017-07-07
MX2016010988A (es) 2016-11-28
RU2641308C1 (ru) 2018-01-17
MX371352B (es) 2020-01-27
CN104882338A (zh) 2015-09-02
EP3111460A1 (en) 2017-01-04

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