CN1014662B - 带有产生电磁力连接支路的断路器 - Google Patents
带有产生电磁力连接支路的断路器Info
- Publication number
- CN1014662B CN1014662B CN86105019A CN86105019A CN1014662B CN 1014662 B CN1014662 B CN 1014662B CN 86105019 A CN86105019 A CN 86105019A CN 86105019 A CN86105019 A CN 86105019A CN 1014662 B CN1014662 B CN 1014662B
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- Prior art keywords
- contact
- circuit breaker
- branch road
- arm
- conductor
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/68—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having two operating members, one for opening and one for closing the same set of contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/101—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening with increasing of contact pressure by electrodynamic forces before opening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
- H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
Abstract
一台断路器,在空间分开的导体间具有断路器构件,包括有固定在一个导体上的定触头和一个装在触头臂上的动触头,该触头臂可运动在分闸与合闸位置之间。该臂和另一导体之间接有软导体连接支路,该支路包括有折回的分路部分,该部分产生的电磁斥力起压紧闭合触头作用。
Description
本发明涉及到断路器,尤其是涉及具有产生电磁力连接支路的断路器,以便既能容易打开触头,又能保持触头的接触压力抵抗触头斥力以允许承受较高的荷载能力。
采用限流断路器可以限制故障电流,更具体地讲,它们减小了流向下流侧设备的故障冲击电流和热能。损害设备的机械和电磁力与冲击电流的平方(Ip)2成正比,而热力损害则正比于释放出的能量(I2t)。比外,限流断路器不仅起断路器和限流熔断器的作用,而且还能重合和重复使用。这样的设备也能有效地应用到电动机控制以及配电系统中。
如何很好地产生限流现象,在这方面有两个主要控制因素,也即在故障电流开始后怎样能迅速分开触头,以及怎样能快速增大空中电弧阻抗,空中电弧即指当触头分离时在其间引起的电弧。限制电弧成功则需要触头具有很高的分离速度,在故障电流开始后触头分开的速度越快,则作用在触头上的电弧驻留时间就越短,如此一来,就能缩小触头材料被融化和挥发的体积。
按照本发明的一台断路器包括有:一个电气绝缘的箱壳,其内装有一个灭室,它支撑着一侧线路导体和一侧负荷导体,在箱壳内和在这两侧导体之间设有断路器构件;还包括有可操作到“分”闸与“合”闸位置之间的第一和第二可分开的电触头;一个可释放的机构,当它被释放到“脱扣”位置时,就运动到有效地分开上述触头;以及包括一个脱扣装置,用于使该可释放的机构脱扣,即在一预定的过电流时
该脱扣装置有效地从一个联锁位置偏移出来;运载装置,它运载第一触头并包括一个开关臂和一个触头臂,该开关臂为可转动地装在第一枢轴上,以便运动在上述触头的“分”闸与“合”闸位置之间;装着第一触头的触头臂是可转动地装在该开关臂上的第二枢轴上;第二触头,装在线路和负荷导体之一上;一个软导电体的连接支路,连接在负荷和线路导体之一和触头臂之间,位于对着第一触头在第二枢轴的一侧旁边上;该软导体包括有返回的支路部份,它们在空间形成一个环路,并在这两部份之间产生第一电磁斥力,该力力图压着该触头臂迫使触头保持在“合”闸位置;还有,在至少触头臂和该脱扣装置之一偏离出联锁位置的时候,该支路部份导体的电磁斥力加速运载装置绕着第一枢轴运动到另外位置。
通常,在箱壳内设有一个灭弧室、一组断路器构件,以及在导电体之间包括有:第一和第二可分开的触头,这些触头操作在灭弧室内“分”闸与“合”闸位置之间;一个可释放的机构,在它被释放到““脱扣”位置时运动到有效地自动分开触头。还包括有一个脱扣装置以在一预定的过负荷电流下而有效地使该脱扣装置从一个联锁位置偏移出来时造成可释放机构的脱扣;运载第一触头的装置,包括一个开关臂和一个触头臂,该开关臂可转动地装在第一枢轴上,以便运动在触头的“分”闸与“合”闸位置之间,装着第一触头的触头臂则可转动地装在第一枢轴和第一触头间的开关臂上的一个第二支枢点处;第二触头,装在线路和负荷导体之一上;有一个软导体的连接支路,连接在线路和负荷导体的之一和触头臂之间,位于对着第一触头在第二枢轴的旁边,该软导体连接支路包括有返回的支路部份,它们形成空间环路,并在这两部份之间产生第一电磁斥力,该力力图压该触头臂使触头保持在“合”闸位置;还有,在脱扣机构被从一个联锁位置偏
移出来时,该支路部份的电磁斥力加速该运载装置绕着该第一枢轴转到“分”闸位置。
本发明的断路器有一个优点,即提供一个由产生电磁力的连接支路,利用一个“斥分”[blow-open]的触头臂可增加保持触头的压力,而且激励出一个电磁力去促进、强迫触头臂分开。在模铸箱壳断路器中应用了这种连接支路结构,它激励出抵抗触头斥分的力,借此而能提高设备的承载能力。
现结合下述附图举例将本发明阐述于后。
图1为一台断路器的立剖视图,触头在“合”闸位置,并示出本发明的连接支路;
图2为一台断路器在“脱扣”位置的立剖视图;和
图3表示该断路器在“斥分”位置的立剖视图。
示于图1的一台模铸箱型断路器10包含一个顶盖14和一个箱底12。顶盖和箱体装配在分界线16的下上并且建立了一个内室,在其中设置了断路器装置,其中包括有一个固定的主触头18和一个可动的主触头20。也设置有固定的和可动的电弧触头,分别为19和21。固定触头18、19装设在与端子24连接的导体22上。
该动触头20、21装设在触头运载臂26上,该运载臂26则可转动地装在一个开关臂28上的枢轴27处(图2)。开关臂28本身又被可转动地装在枢轴29处,而枢轴29是固定在箱底结构部件30上的。设有一个软导体或称连接支路32从该臂26延伸到导体36的连接器34上,该导体36则引接到端子38。虽然断路器的电流是从端子38经过许多部件36、34、32、26、20、18、22而流到端子24,但是断路器也运行于电流方向相反的场合。
设有一个操作机构以总号40来指示,它利用一般的曲柄组件来分开和闭合那些触头,曲柄组件包括有曲柄连杆44、46,它们可转动地互相连接在一个枢轴48上,连杆46可转动地接到枢轴27a而与一个可转动的托架50相联系。该枢轴27a与在开关臂26上的枢轴27在一行上并相互分开。托架50可转动地装在枢轴29上。连杆44可转动地接到枢轴52而与一个可释放的臂或支架54相联系。该曲柄机构还包括一个圈簧55,和常规方式一样。为了对该曲柄机构更完全的描述,在这里结合美国专利号3,949,331作为参考进行。
分开触头18、20可以通过操作机构40的扳柄42来完成,或者响应电路中发生过电流条件而自动脱扣。在“脱扣”位置时,触头臂26处于图2中所示的位置。托架50支撑着一个横闩56,该横闩56与三极断路器的各相邻的极单元中的触头臂相互连接,用以同时地分开或闭合相应的类似于触头18、20的各触头。因此,当操作机构40驱动触头臂26动作在“分”闸或“合”闸位置之间时,在断路器的各相邻极中的其它触头臂便也相应地被此操作机构所驱动。
触头自动“分”闸或“脱扣”由一个联锁装置57(总指示号)来提供,该装置57可由一个过负荷敏感装置来驱动,例如由双金属片58(图1)驱动。
按照本发明,连接支路32包括有支路部份60、62,后两部被弯曲或向后返转或折叠在顶点64处而形成一个V形或U形的环路,支路部份60的一端在66处安装到连接器34上,该支路的另一端在68处安装到触头臂26上。由于在连接支路32和导体34中的电流方向相反,故在其间产生的电磁力是推动该连接支路抵抗触头臂
26而向上。由于连接支路32的上端是装在相对着动触头26而在枢轴27的边上68处,故使触头臂绕枢轴27反时针转动,借此而使触头保持与触头斥力作用相反的压力,所述的斥力是出现在触头18、20之间的。因此,能够避免发生在常规的断路器中的触头斥开的现象(除非是当联锁装置57脱扣而使断路器分闸),从而断路器获得较高的承载能力。
当发生较低等级过电流时,电流互感器58推动联锁装置57通过一个刚性脱扣单元去释放该支架54(图2),据此,曲柄机构借助于转动托架50而使断路器脱扣。连接支路32能够承受这种较低的过电流。
但是,当发生较高等级的过电流时,连接支路32立即响应,借此而开关臂28和触头臂26的组件绕轴29转动到“斥分”位置(图3),托架50暂时保持不动,如图3所示,或即如图1中所示的相同位置。这一现象的发生是由于在相反方向的支路部份60、62之间所引起的电磁斥力快速增大的结果,因为这些力超过了在常规状态下(例如在正常状态或低等级过电流情况)支路部份所经受的力,于是该部份60、62实际上被斥分到如图2和图3所示的样子。
短路以后,作为环路电流的约略一小部份电流,使电流互感器58响应于高等级的过电流而通过一个刚性脱扣单元(未示出)驱动联锁装置57,从而造成操作机构40去跳开该断路器,并借此将托架50转动到图2所示位置。
根据这种结构,除非设置本发明的软导体连接支路32,否则就需要用较低电流的门限电流。
因此,本发明的连接支路的设计在于产生一个力,当它与一种
“斥分”[blow-open]的触头臂一起应用时有助于保持触头的接触压力,而在需要的时候能激励出助长分开触头臂的力。而且,当该连接支路的设计用于一台模铸箱壳的断路器中时,它激励出抵抗触头被斥分的力,使其具有较高的承载能力。
Claims (5)
1、一台断路器包括有一个电气绝缘箱壳,内装一个支撑线路导体和负荷导体的灭弧室;在箱壳中和在该导体之间装有断路器构件,包括可分开的第一和第二触头,它们能操纵在“分”闸和“合”闸位置之间;特征为包括一个可释机构,当释放到“脱扣”位置时它运动到有效地分开上述触头;还包括一个脱扣装置,用于在预定的过电流条件下该装置有效地从一个联锁位置偏移出来而使该可释放机构脱扣;载着第一触头的运载装置,并包括有一个开关臂和一个触头臂,该开关臂可转动地装在第一枢轴上,以便运动在触头的“分”闸和“合”闸位置之间,该装有第一触头的触头臂可转动地装在开关臂上的第二枢轴处;第二触头安装在线路和负荷导体之一上;有一个软导体连接支路被电气地连接在线路和负荷导体的之一和触头臂之间,位于对着第一触头在第二枢轴的旁边上,该软导体连接支路包括有弯回来的支路部份而形成空间的一个环路,并且在该支路部份之间所产生的第一电磁斥力,该力力图压着触头臂使触头保持在合闸位置;以及当至少触头臂和脱扣装置之一从联锁位置偏移出来时,该支路部份的电磁斥力加速该运载装置绕第一枢轴运动到分闸位置。
2、按照权利要求1的一台断路器,其中触头臂安装在第一枢轴和第一触头之间开关臂上第二枢轴处并可转动。
3、按照权利要求2的一台断路器,其中该软导体连接支路在触头闭合状态时具有一个基本上为V形的外形。
4、按照权利要求3的一台断路器,其中该软导体连接支路当在触头闭合状态时具有一个基本上为U形的外形。
5、按照权利要求1到5中任一项的一台断路器,其中支路部分和与其连接的导体基本上是平行的,所以产生第二电磁斥力,该力补充该第一电磁斥力而在运载装置上造成更大的压力。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US766,303 | 1985-08-16 | ||
US06/766,303 US4656444A (en) | 1985-08-16 | 1985-08-16 | Circuit breaker with force generating shunt |
Publications (2)
Publication Number | Publication Date |
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CN86105019A CN86105019A (zh) | 1987-04-08 |
CN1014662B true CN1014662B (zh) | 1991-11-06 |
Family
ID=25076039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN86105019A Expired CN1014662B (zh) | 1985-08-16 | 1986-08-15 | 带有产生电磁力连接支路的断路器 |
Country Status (12)
Country | Link |
---|---|
US (1) | US4656444A (zh) |
EP (1) | EP0212258A3 (zh) |
JP (1) | JPS6243027A (zh) |
KR (1) | KR950003868B1 (zh) |
CN (1) | CN1014662B (zh) |
AU (1) | AU589199B2 (zh) |
BR (1) | BR8603909A (zh) |
CA (1) | CA1252814A (zh) |
ES (1) | ES2001361A6 (zh) |
IN (1) | IN164820B (zh) |
PH (1) | PH23615A (zh) |
ZA (1) | ZA865749B (zh) |
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US5193043A (en) * | 1990-06-26 | 1993-03-09 | Westinghouse Electric Corp. | Phase sensitivity |
US5119054A (en) * | 1990-08-30 | 1992-06-02 | Westinghouse Electric Corp. | "E" frame pancake design |
JP2864727B2 (ja) * | 1990-11-22 | 1999-03-08 | 富士電機株式会社 | 反発形回路遮断器の接触子装置 |
US5493084A (en) * | 1994-08-04 | 1996-02-20 | Eaton Corporation | Door release for circuit interrupter rotary handle mechanism |
US5508670A (en) * | 1994-11-28 | 1996-04-16 | Eaton Corporation | Trip interlock assembly for a circuit breaker |
US5605467A (en) * | 1995-01-19 | 1997-02-25 | Eaton Corporation | Cover for battery compartment and communications port |
US5548261A (en) * | 1995-03-03 | 1996-08-20 | Eaton Corporation | Trip device for a circuit breaker |
US5576677A (en) * | 1995-06-07 | 1996-11-19 | Eaton Corporation | Dual action armature |
GB9614169D0 (en) * | 1996-07-05 | 1996-09-04 | Whipp & Bourne Ltd | Electrical circuit breakers |
US5917390A (en) * | 1998-07-22 | 1999-06-29 | General Electric Company | Circuit breaker with current limiting contact structure |
CN1253912C (zh) * | 2003-05-29 | 2006-04-26 | 刘平 | 电力开关器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695345A (en) * | 1950-04-19 | 1954-11-23 | Ite Circuit Breaker Ltd | Blow open, blow closed circuit breaker |
FR1268047A (fr) * | 1960-08-12 | 1961-07-28 | Elektro App Werke Veb | Dispositif électrodynamique servant à l'actionnement des éléments de commutation d'un interrupteur électrique, notamment d'un disjoncteur |
FR1580422A (zh) * | 1968-07-05 | 1969-09-05 | ||
JPS6051222B2 (ja) * | 1978-08-28 | 1985-11-13 | 株式会社東芝 | 回路しや断器 |
US4281303A (en) * | 1980-03-10 | 1981-07-28 | General Electric Company | Individual circuit breaker pole trip mechanism |
FR2538947A1 (fr) * | 1983-01-05 | 1984-07-06 | Telemecanique Electrique | Interrupteur a fermeture et ouverture commandees et a ouverture automatique en cas de surcharge de courant |
US4567455A (en) * | 1983-04-28 | 1986-01-28 | Mitsubishi Denki K.K. | Circuit interrupter |
-
1985
- 1985-08-16 US US06/766,303 patent/US4656444A/en not_active Expired - Lifetime
-
1986
- 1986-07-16 EP EP86109768A patent/EP0212258A3/en not_active Withdrawn
- 1986-07-18 IN IN542/CAL/86A patent/IN164820B/en unknown
- 1986-07-18 AU AU60318/86A patent/AU589199B2/en not_active Ceased
- 1986-07-18 PH PH34035A patent/PH23615A/en unknown
- 1986-07-30 CA CA000515016A patent/CA1252814A/en not_active Expired
- 1986-07-31 ZA ZA865749A patent/ZA865749B/xx unknown
- 1986-08-08 KR KR1019860006552A patent/KR950003868B1/ko not_active IP Right Cessation
- 1986-08-08 JP JP61187656A patent/JPS6243027A/ja active Pending
- 1986-08-11 ES ES8600998A patent/ES2001361A6/es not_active Expired
- 1986-08-15 BR BR8603909A patent/BR8603909A/pt not_active IP Right Cessation
- 1986-08-15 CN CN86105019A patent/CN1014662B/zh not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ZA865749B (en) | 1987-03-25 |
US4656444A (en) | 1987-04-07 |
ES2001361A6 (es) | 1988-05-16 |
BR8603909A (pt) | 1987-03-24 |
PH23615A (en) | 1989-09-11 |
JPS6243027A (ja) | 1987-02-25 |
KR950003868B1 (ko) | 1995-04-20 |
EP0212258A2 (en) | 1987-03-04 |
KR870002622A (ko) | 1987-04-06 |
CA1252814A (en) | 1989-04-18 |
CN86105019A (zh) | 1987-04-08 |
AU6031886A (en) | 1987-02-19 |
AU589199B2 (en) | 1989-10-05 |
IN164820B (zh) | 1989-06-10 |
EP0212258A3 (en) | 1988-12-21 |
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