WO2022156816A9 - 框架断路器 - Google Patents

框架断路器 Download PDF

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Publication number
WO2022156816A9
WO2022156816A9 PCT/CN2022/073812 CN2022073812W WO2022156816A9 WO 2022156816 A9 WO2022156816 A9 WO 2022156816A9 CN 2022073812 W CN2022073812 W CN 2022073812W WO 2022156816 A9 WO2022156816 A9 WO 2022156816A9
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WO
WIPO (PCT)
Prior art keywords
circuit breaker
base
busbar
extinguishing chamber
assembly
Prior art date
Application number
PCT/CN2022/073812
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English (en)
French (fr)
Other versions
WO2022156816A1 (zh
Inventor
刘磊
林新德
殷国庭
钟建艺
张金泉
Original Assignee
厦门宏发开关设备有限公司
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.)
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Publication date
Application filed by 厦门宏发开关设备有限公司 filed Critical 厦门宏发开关设备有限公司
Priority to DE212022000142.7U priority Critical patent/DE212022000142U1/de
Publication of WO2022156816A1 publication Critical patent/WO2022156816A1/zh
Publication of WO2022156816A9 publication Critical patent/WO2022156816A9/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the present disclosure relates to a frame circuit breaker.
  • the arc extinguishing chamber is horizontally arranged above the base
  • the arc extinguishing chamber is vertically arranged in the base
  • the moving bus The busbar and the static busbar are separated and arranged at the upper end and the lower end of the arc-extinguishing chamber in an up-and-down manner, and the moving busbar and the static busbar are bent to one side of the base and extend out of the base.
  • the frame circuit breaker drives the busbars and the static busbars at the arc-extinguishing chamber interval to avoid heat accumulation between the busbars and reduce the current proximity effect.
  • the moving busbars and static busbars are bent, after actual verification, it is found that there are the following shortcomings:
  • the bending and extending moving busbar and static busbar increase the length of the current-carrying conductor
  • the moving busbar and the static busbar are respectively arranged at the upper and lower ends of the arc extinguishing chamber, and then bend and extend out of one side of the base, which prevents the arc extinguishing chamber from exhausting the upper and lower ends of the arc extinguishing chamber, which affects the arc extinguishing effect. .
  • the present disclosure proposes a frame circuit breaker with optimized structure.
  • the present disclosure proposes a frame circuit breaker, including a contact system, an operating mechanism, a base, an arc-extinguishing chamber assembly installed in the base to extend up and down, and a moving busbar and a static bus that are fixedly connected to the base
  • the static busbar and the movable busbar generally extend up and down, the static busbar extends upwards out of the base, and the movable busbar extends downwards out of the base.
  • the base is provided with a first exhaust port and a second exhaust port, and the first exhaust port is located above the arc extinguishing chamber assembly, The second exhaust port is located below the arc chute assembly.
  • the contact system includes a movable contact assembly movably arranged in the base, and the movable contact The assembly is arranged on one side of the arc extinguishing chamber assembly.
  • a diverter cone is provided on the base, and the diverter cone is located on the arc-extinguishing chamber assembly.
  • the flow dividing cone On the side facing away from the movable contact assembly, the flow dividing cone has two inclined guide surfaces facing the first exhaust port and the second exhaust port respectively.
  • the contact system further includes a static contact, where the moving contact assembly is connected with the static contact.
  • the relative movement of the contacts constructs a movement trajectory for realizing conduction or disconnection, and the movement trajectory is located between the static busbar and the moving busbar.
  • the moving contact assembly is pivotally connected to the base, and can be roughly along the arc-extinguishing chamber assembly.
  • the direction of extension swings up and down.
  • the operating mechanism is installed outside the base and is connected to the moving contact assembly by means of a link mechanism; the moving contact assembly is arranged in the middle, and the operating mechanism and the arc extinguishing chamber assembly are respectively arranged on both sides of the movable contact assembly.
  • both the static busbars and the moving busbars of the present disclosure extend out of the base directly up and down, and no additional bending is required to horizontally extend the static busbars and the moving busbars out of the base.
  • the length of the static busbar and the moving busbar is reduced, the length of the current-carrying conductor of the frame circuit breaker is generally reduced, the current-carrying capacity is improved, and the heat generation of the circuit breaker is improved.
  • a first exhaust port and a second exhaust port are provided on the bases at the upper and lower ends of the arc extinguishing chamber assembly, and a diverter cone is arranged on the side of the arc extinguishing chamber assembly, so that the arc is generated, and the ablation product is generated.
  • a large amount of gas rushing towards the arc extinguishing chamber assembly can be quickly exhausted along the up and down direction of the arc extinguishing chamber assembly, which pushes the arc to run in the arc extinguishing chamber assembly and enhances the arc extinguishing effect.
  • FIG. 1 is a schematic perspective view of an embodiment of a frame circuit breaker of the present disclosure
  • FIG. 2 is a schematic diagram of the internal structure of the embodiment of the frame circuit breaker of the present disclosure
  • FIG. 3 is a schematic diagram illustrating that gas is discharged from the first exhaust port and the second exhaust port when an arc is generated in an embodiment of the frame circuit breaker of the present disclosure, and part of the gas is returned to the contact area through a gas circulation channel;
  • FIG. 4 is a schematic diagram of a double-pole circuit breaker formed by splicing two single poles with each other in an embodiment of the frame circuit breaker.
  • a certain structure When a certain structure is "on” other structures, it may mean that a certain structure is integrally formed on other structures, or that a certain structure is “directly” arranged on other structures, or that a certain structure is “indirectly” arranged on another structure through another structure. other structures.
  • an embodiment of the present disclosure proposes a frame circuit breaker, including a base 1 , a moving contact assembly 2 , a static busbar 3 , a moving busbar 4 , an arc extinguishing chamber assembly 5 and an operating mechanism 6 .
  • the installation and use state of the frame circuit breaker that is, the static orientation of the state shown in FIG.
  • the direction H extends up and down
  • the static busbar 3 and the movable busbar 4 extend approximately up and down, and extend out of the base 1 upward and downward respectively to become two terminals of the frame circuit breaker.
  • both the static busbar 3 and the moving busbar 4 are directly extended out of the base 1 up and down, and there is no need to bend the static busbar and the moving busbar to horizontally extend out of the base.
  • the side of the seat reduces the lengths of the static busbar 3 and the moving busbar 4, and generally reduces the length of the current-carrying conductor of the frame circuit breaker, thereby improving the current-carrying capacity and improving the heat generation of the circuit breaker.
  • the movable contact assembly 2 is arranged on one side of the arc extinguishing chamber assembly 5. As shown in FIG. 2, the movable contact assembly 2 is located on the left side of the arc extinguishing chamber assembly 5, so the movable contact assembly 2 and the arc extinguishing chamber assembly 5 are roughly Arranged left and right, to make full use of the height space of the base 1 to set up the arc extinguishing chamber assembly 5, increase the arc running distance, increase the number of arc extinguishing grids, and improve the arc extinguishing ability of the product at high voltage.
  • the moving busbar 4 is electrically connected with the moving contact assembly 2, the lower end of the static busbar 3 has a static contact, and correspondingly has a moving contact on the moving contact assembly 2, and the moving contact assembly 2 is arranged on the static busbar 3 and the moving contact
  • the movable contact assembly 2 is pivotally connected to the base 1 as a whole, so that the movable contact on the movable contact assembly 2 can swing up and down to approach or move away from the stationary contact, thereby forming the contact of the circuit breaker. head system to control the making and breaking of frame circuit breakers.
  • the way that the movable contact assembly 2 swings up and down can also utilize the gravity of the movable contact assembly 2 itself as the driving force for the opening of the auxiliary frame circuit breaker, which improves the opening speed and further improves the breaking performance.
  • the base 1 is provided with a first exhaust port 11 and a second exhaust port 12, the first exhaust port 11 is located above the arc extinguishing chamber assembly 5, and the second exhaust port 12 is located in the arc extinguishing chamber below component 5.
  • the base 1 is also provided with a diverter cone 13 , and the diverter cone 13 is located on the right side of the arc extinguishing chamber assembly 5 , at a position roughly corresponding to the movable contact assembly 2 .
  • the diverter cone 13 has two inclined guide surfaces facing the first exhaust port 11 and the second exhaust port 12 respectively, so that the arc is generated, and when gas is produced by ablation, a large amount of gas rushing towards the arc-extinguishing chamber assembly 5 can be diverted. Under the guidance of the cone 13, the air is quickly exhausted along the vertical direction in which the arc extinguishing chamber assembly 5 extends.
  • the diverter cone 13 in the present disclosure accelerates the flow rate of the gas and accelerates the cooling of the arc; The arc runs in the component 5, so as to quickly extinguish the arc and strengthen the arc extinguishing effect.
  • the present embodiment is provided with a gas circulation channel, which can be the same as the prior art.
  • the gas circulation channel guides at least a part of the gas flow flushed from the arc extinguishing chamber assembly 5 back to the contact area, so as to push the arc from the contact area.
  • the head area moves toward the arc extinguishing chamber assembly 5 to increase the dielectric strength of the contact area.
  • the frame circuit breaker also includes an operating mechanism 6, the operating mechanism 6 is arranged on the left side of the moving contact assembly 2, the operating mechanism 6 is installed outside the base 1, and is connected to the moving contact assembly 2 by means of a link mechanism to drive the contacts to move To help the circuit breaker to open and close, the operating mechanism 6 can adopt the prior art, which will not be described in this example.
  • the movable contact assembly 2 is arranged in the middle, and the operating mechanism 6 and the arc extinguishing chamber assembly 5 are respectively arranged on the left and right sides of the movable contact assembly 2, so that the frame circuit breaker can be reasonably utilized. installation space.
  • the frame circuit breaker provided in this embodiment can be spliced with each other to form a multi-pole circuit breaker. As shown in FIG. 4 , two frame circuit breakers are spliced to form a double-pole circuit breaker. In other embodiments, a three-pole circuit breaker can also be formed. device, four-pole circuit breaker, etc.
  • the multiple moving contact assemblies of the multiple frame circuit breakers realize synchronous pole connection through the linkage mechanism, so that only one operating mechanism can be left to control the opening and closing of the multi-pole circuit breaker.
  • Each independent single-pole frame circuit breaker in the multi-pole circuit breaker is separated from each other by the outer casing of the circuit breaker, which can prevent the free gas generated by the arc of one pole from escaping to the other poles, and improve the reliability of breaking.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Circuit Breakers (AREA)

Abstract

本公开提出一种框架断路器，包括触头系统、操作机构、基座和上下延伸地安装在基座内的灭弧室组件，还包括固定连接在基座上的动母排和静母排。静母排和动母排大致呈上下延伸，所述静母排和动母排分别朝上和朝下地延伸出所述基座。本公开的框架断路器的载流导体长度减小，提高了载流能力，减少了断路器的发热。

Description

框架断路器 技术领域
本公开涉及一种框架断路器。
背景技术
对于框架断路器，为了解决现有技术中存在的因灭弧室水平布置在基座上方而存在的各种问题，有些框架断路器中，灭弧室竖直布置在基座内，并且动母排和静母排以上下相对的方式分隔布置在灭弧室的上端和下端，动母排和静母排向基座的一侧弯折，并延伸出基座。该框架断路器以灭弧室间隔开动母排和静母排，避免热量聚积在母排之间，减少了电流临近效应。然而，由于动母排、静母排是折弯的，经过实际验证后发现存在如下的缺点：
1.折弯延伸的动母排、静母排增大了载流导体的长度；
2.动母排、静母排分别设置在灭弧室的上端和下端，再弯折延伸出基座的一侧，阻挡住了灭弧室向其上下两端排气，影响了灭弧效果。
发明内容
因此，针对上述问题，本公开提出一种结构优化的框架断路器。
本公开采用如下技术方案实现：
本公开提出一种框架断路器，包括触头系统、操作机构、基座和上下延伸地安装在基座内的灭弧室组件，以及固定连接在所述基座上的动母排和静母排，所述静母排和所棕述动母排大致呈上下延伸，所述静母排朝上延伸出所述基座，所述动母排朝下延伸出所述基座。
其中，为强化灭弧效果，在一个实施例中，所述基座上开设有第一排气口和第二排气口，所述第一排气口位于所述灭弧室组件的上方，所述第二排气口位于所述灭弧室组件的下方。
其中，为使框架断路器的结构紧凑，减小框架断路器的体积占用，在一个实施例中，所述触头系统包括可活动设置在基座中的动触头组件，所述动触头组件设置在所述灭弧室组件的一侧。
其中，为进一步引导气体向第一排气口和第二排气口快速排气，在一个实施例中，所述基座上设有分流锥，所述分流锥位于所述灭弧室组件的背向所述动触头组件的一侧，所述分流锥具有分别朝向所述第一排气口和第二排气口的两个斜导面。
其中，为实现最佳的灭弧效果，并同时使框架断路器内部结构紧凑合理，在一个实施例 中，所述触头系统还包括静触头，以所述动触头组件与所述静触头的相对运动构建出用于实现导通或分断的运动轨迹，所述运动轨迹处于所述静母排和动母排之间。
其中，为利用动触头组件本身的重力辅助动、静触头分断，在一个实施例中，所述动触头组件枢接在所述基座上，并能够大致沿所述灭弧室组件的延伸方向上下摆动。
其中，基于安装考虑，在一个实施例中，所述操作机构安装在基座外，并借助连杆机构连接于所述动触头组件；所述动触头组件设置在中间，所述操作机构和所述灭弧室组件分别设置在所述动触头组件的两侧。
本公开具有以下有益效果：本公开的静母排和动母排都是直接上下延伸出基座的，不需要再额外地通过折弯来使静母排和动母排水平地延伸出基座的侧边，使得静母排和动母排的长度减小，总体上使框架断路器的载流导体长度减小，提高了载流能力，改善了断路器的发热。
进一步的，本公开通过在灭弧室组件上下两端的基座上开设第一排气口和第二排气口，并在灭弧室组件侧边设置分流锥，使得电弧产生，且烧蚀产气时，大量冲向灭弧室组件的气体能够在分流锥的引导下沿着灭弧室组件延伸的上下方向快速排气，推动电弧在灭弧室组件内跑弧，加强灭弧效果。
附图说明
图1是本公开框架断路器实施例的立体示意图；
图2是本公开框架断路器实施例内部结构的示意图；
图3是本公开框架断路器实施例产生电弧时气体从第一排气口和第二排气口排出，且部分气体通过气体循环通道回流至触头区的示意图；
图4是框架断路器实施例中两个单极相互拼接形成双极断路器的示意图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式。虽然本说明书中使用相对性的用语，例如“上”、“下”来描述图标的一个组件对于另一组件的相对关系，但是这些术语用于本说明书中仅出于方便，例如根据附图中所述的示例的方向。能理解的是，如果将图标的装置翻转使其上下颠倒，则所叙述在“上”的组件将会成为在“下”的组件。其他相对性的用语，例如“顶”、“底”等也作具有类似含义。当某结构在其它结构“上”时，有可能是指某结构一体形成于其它 结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”和“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”、“第二”等仅作为标记使用，不是对其对象的数量限制。
为进一步说明各实施例，本发明提供有附图。这些附图为本发明揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。
参阅图1和图2所示，本公开实施例提出一种框架断路器，包括基座1、动触头组件2、静母排3、动母排4、灭弧室组件5和操作机构6。本实施例中，以框架断路器的安装使用状态，即图2所示的状态的静态方位为该实施例的方向，灭弧室组件5安装在基座1内，且沿基座1的高度方向H上下延伸，静母排3和动母排4大致呈上下延伸，且分别朝上和朝下地延伸出基座1，成为框架断路器的两接线端。相比于现有技术而言，静母排3和动母排4都是直接上下延伸出基座1的，不需要再额外地通过折弯来使静母排和动母排水平地延伸出基座的侧边，使得静母排3和动母排4的长度减小，总体上使框架断路器的载流导体长度减小，从而提高载流能力，改善断路器的发热。
动触头组件2设置在灭弧室组件5的一侧，如图2所示，动触头组件2位于灭弧室组件5的左侧，则动触头组件2和灭弧室组件5大致呈左右布置，以充分利用基座1的高度空间设置灭弧室组件5，增大跑弧距离，增加灭弧栅片的数量，提高了产品在高电压的灭弧能力。动母排4与动触头组件2电连接，静母排3下端具有静触头，对应地在动触头组件2上具有动触头，动触头组件2设置在静母排3和动母排4之间，且动触头组件2整体地与基座1枢接，从而使得动触头组件2上的动触头能够上下摆动而靠近或远离静触头，从而构成断路器的触头系统，以控制框架断路器的导通和分断。动触头组件2上下摆动的方式还能够利用动触头组件2本身的重力作为辅助框架断路器分闸的驱动力，提高了分闸的速度，进一步提升分断性能。
参阅图3，在基座1上开设有第一排气口11和第二排气口12，第一排气口11位于灭弧室组件5的上方，第二排气口12位于灭弧室组件5的下方。在电弧产生，且烧蚀产气时，大量冲向灭弧室组件5的气体能够通过第一排气口11和第二排气口12排出。基座1上还设有分流锥13，分流锥13位于灭弧室组件5的右侧，大致与动触头组件2相对应的位置。分流锥13 具有分别朝向第一排气口11和第二排气口12的两个斜导面，使得电弧产生，且烧蚀产气时，大量冲向灭弧室组件5的气体能够在分流锥13的引导下沿着灭弧室组件5延伸的上下方向快速排气。本公开中的分流锥13，一方面加快了气体的流动速率，加速冷却电弧；另一方面，由于气体是沿灭弧室组件5延伸的上下方向排出的，还能够进一步推动电弧在灭弧室组件5内跑弧，从而快速地进行灭弧，强化灭弧效果。同时，本实施例设有气体循环通道，该气体循环通道可以与现有技术相同，气体循环通道将从灭弧室组件5冲出的气流的至少一部分引导回触头区，以推动电弧从触头区向灭弧室组件5运动、增加触头区的绝缘强度。
框架断路器还包括操作机构6，操作机构6设置在动触头组件2左侧，操作机构6安装在基座1外，并借助连杆机构连接于动触头组件2，以带动触头运动帮助断路器分、合闸，操作机构6可以采用现有技术，本例中不再展开描述。整体布局上，本公开的框架断路器，动触头组件2设置在中间，操作机构6和灭弧室组件5分别设置在动触头组件2的左右两侧，从而合理地利用框架断路器的安装空间。
本实施例所提供的框架断路器可以多个相互拼接形成多极断路器，如图4所示两个框架断路器拼接形成双极断路器，在其他一些实施例中，也可以形成三极断路器、四极断路器等。多极断路器中多个框架断路器的多个动触头组件通过联动机构来实现同步极联，从而可以只留下一个操作机构来控制多极断路器的分、合闸。多极断路器中的各个独立的单极的框架断路器通过断路器的外壳体相互分隔，能够避免其中一极电弧产生的游离气体逸出到其他极，提高分断的可靠性。
应可理解的是，本发明不将其应用限制到本说明书提出的部件的详细结构和布置方式。本发明能够具有其他实施方式，并且能够以多种方式实现并且执行。前述变形形式和修改形式落在本发明的范围内。应可理解的是，本说明书公开和限定的本发明延伸到文中和/或附图中提到或明显的两个或两个以上单独特征的所有可替代组合。所有这些不同的组合构成本发明的多个可替代方面。本说明书所述的实施方式说明了已知用于实现本发明的最佳方式，并且将使本领域技术人员能够利用本发明。

Claims (7)

  1. 一种框架断路器，包括触头系统、操作机构、基座和上下延伸地安装在所述基座内的灭弧室组件，以及固定连接在所述基座上的动母排和静母排，其特征在于所述静母排和所述动母排大致呈上下延伸，所述静母排朝上延伸出所述基座，所述动母排朝下地伸出所述基座。
  2. 根据权利要求1所述的框架断路器，其特征在于：所述基座上开设有第一排气口和第二排气口，所述第一排气口位于所述灭弧室组件的上方，所述第二排气口位于所述灭弧室组件的下方。
  3. 根据权利要求2所述的框架断路器，其特征在于所述触头系统包括可活动设置在基座中的动触头组件，所述动触头组件设置在所述灭弧室组件的一侧。
  4. 根据权利要求3所述的框架断路器，其特征在于所述基座上设有分流锥，所述分流锥位于所述灭弧室组件的背向所述动触头组件的一侧，所述分流锥具有分别朝向所述第一排气口和第二排气口的两个斜导面。
  5. 根据权利要求3所述的框架断路器，其特征在于所述触头系统还包括静触头，以所述动触头组件与所述静触头的相对运动构建出用于实现导通或分断的运动轨迹，所述运动轨迹处于所述静母排和动母排之间。
  6. 根据权利要求3所述的框架断路器，其特征在于所述动触头组件枢接在所述基座上，并能够大致沿所述灭弧室组件的延伸方向上下摆动。
  7. 根据权利要求3所述的框架断路器，其特征在于所述操作机构安装在基座外，并借助连杆机构连接于所述动触头组件；所述动触头组件设置在中间，所述操作机构和所述灭弧室组件分别设置在所述动触头组件的两侧。
PCT/CN2022/073812 2021-01-25 2022-01-25 框架断路器 WO2022156816A1 (zh)

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