WO2013007101A1 - 三工位隔离接地开关 - Google Patents

三工位隔离接地开关 Download PDF

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Publication number
WO2013007101A1
WO2013007101A1 PCT/CN2012/000900 CN2012000900W WO2013007101A1 WO 2013007101 A1 WO2013007101 A1 WO 2013007101A1 CN 2012000900 W CN2012000900 W CN 2012000900W WO 2013007101 A1 WO2013007101 A1 WO 2013007101A1
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WO
WIPO (PCT)
Prior art keywords
movable contact
gear
rack
moving contact
guiding
Prior art date
Application number
PCT/CN2012/000900
Other languages
English (en)
French (fr)
Inventor
王振
李永林
林麟
贺晶晶
Original Assignee
平高集团有限公司
河南平高电气股份有限公司
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.)
Filing date
Publication date
Application filed by 平高集团有限公司, 河南平高电气股份有限公司 filed Critical 平高集团有限公司
Publication of WO2013007101A1 publication Critical patent/WO2013007101A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H31/283—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact wherein the contact or contacts are rectilinearly movable with respect to the carrying member

Definitions

  • the present invention relates to electrical equipment, and more particularly to a three-station isolation grounding.
  • a three-station isolated earthing switch includes a housing, a static contact, a movable contact, a movable contact seat, and a support base, wherein the support base is assembled in the inner cavity of the housing, The contact seat is fixedly mounted on the support base, and the movable contact seat is provided
  • the movable contact guide is fitted in the guide passage and fixedly mounted on the externally with a rack, and the support base is further rotatably assembled with the tooth
  • the extending direction of the rotating axis of the gear is perpendicular to the guiding direction of the guiding channel, and the gear is driven and connected to the corresponding driving device through an insulating rod to drive the movable contact to work;
  • Station isolation grounding switches have been fully utilized in production, but some problems have arisen in use.
  • the intersection of the gear and the insulating rod ie, the center of the gear
  • the switch is affected by the insulation test.
  • the inner diameter of the housing needs to be increased.
  • the moving contact is usually a solid structure, resulting in an increase in the quality of the moving contact. The operating work is increased when the switch is operated.
  • the three-station isolated grounding switch of the present invention adopts the following technical solutions: a three-station isolated grounding switch, including a moving contact seat, the movable contact seat is rotatably equipped with a corresponding insulating rod, The insulating rod has a power input end for driving connection with the driving device and a power output end equipped with a gear; the movable guiding seat is equipped with a moving contact, and the movable contact is fixedly arranged along the moving contact a rack extending in a movable direction and meshing with the gear, wherein: the movable contact has a mounting chamber therein, the rack is assembled in the mounting chamber; and at least one of the outer wall of the movable contact has a guiding long hole, the power output end of the insulating rod penetrates into the installation chamber through the corresponding guiding long hole and is in guiding engagement with the guiding long hole in the moving direction of the movable contact; the gear meshes with the rack in the installation room
  • the outer wall of the movable contact is oppositely disposed with two guiding elongated holes, and the power output end of the insulating rod is from the same
  • One of the guiding elongated holes penetrates into the mounting chamber and extends into the other guiding elongated hole.
  • the movable contact has a cylindrical section between both ends in the moving direction thereof, and a center of the gear is located on a center line of the cylindrical section.
  • the three-station isolation grounding switch of the present invention is provided with the mounting chamber in the movable contact, the rack and the gear can be assembled in the installation room, thereby greatly improving The electric field distribution around the edge rod is reduced, so that the inner diameter of the housing corresponding to the isolated grounding switch can be reduced, thereby solving the problem of the large volume of the existing three-station isolated earthing switch using the rack and pinion transmission mechanism;
  • the movable contact has the installation chamber, it can be known that the movable contact has a hollow structure, thereby reducing the quality of the movable contact and reducing the operating work during the switching operation.
  • FIG. 1 is a schematic structural view of a first embodiment of a three-station isolated earthing switch of the present invention (with a section);
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG.
  • Embodiment 1 of the three-station isolation grounding switch of the present invention has a housing 1 in which a movable contact base 3 is fixedly mounted by a basin insulator 2,
  • the contact seat 3 has a guiding passage therein and is movably guided through the guiding passage thereof to be equipped with the movable contact 4, and the movable contact 4 is disposed at both ends of the guiding passage of the movable contact base 3 in the housing 1 and the movable contact 4 has a mounting chamber and is provided with a rack 6 in the mounting chamber thereof, and the rack 6 extends along the moving direction of the movable contact 4, that is, the guiding direction of the guiding passage of the movable contact base 3, and the movable contact base 3 is further Rotatingly equipped with an insulating rod 7 having a power input end for driving connection with the driving device and a power output end of the rotation-rotating gear 8 , the power input end of the insulating rod 7 is driven by one side of the movable rod 7
  • a guide long penetrates into the installation chamber and is guided and engaged with the guide long hole in the movable direction of the movable contact,
  • the power output end of the insulating rod 7 extends from one guiding slot into the mounting chamber and then extends to the other guiding slot. Since the power output end of the insulating rod 7 has an overhanging structure, the guiding long hole 9 can limit the shaking of the overhanging end of the insulating rod 7 during rotation; in addition, since the movable contact 4 needs to reciprocate during operation, the guiding The elongated hole 9 also prevents the insulating rod from interfering with the movement of the movable contact 4.
  • the three-station isolated earthing switch of the invention firstly drives the insulating rod to rotate by the corresponding driving device, and then drives the rack movement through the gear, and is fixedly mounted on the moving contact, so the moving contact and the rack Synchronous movement to achieve the separation with the static contact; since the rack and the gear are assembled in the installation room, the electric field distribution around the edge rod is greatly improved, and the shell corresponding to the grounding switch is provided.
  • the inner diameter of the body can be reduced, thereby solving the problem of large volume of the existing three-station isolated earthing switch adopting the rack and pinion transmission mechanism; in addition, since the movable contact has the installation room therein, the movable contact can be known
  • the head has a hollow structure, thereby reducing the quality of the moving contact and reducing the operating work during the switching operation.
  • the guiding elongated hole may be disposed only on one side of the moving contact; and three or more guiding long holes may be disposed on the outer wall of the moving contact, and each guiding Long holes do not have to be opposite each other.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

三工位隔离接地开关，包括动触头座（3），动触头座上转动装配有绝缘杆（7），绝缘杆具有动力输入端及配有齿轮（8）的动力输出端；动触头座内活动导向装配有动触头（4），动触头上固定设置有沿动其活动方向延伸且与该齿轮啮合的齿条（6），动触头内具有安装室，齿条装配于安装室内；绝缘杆的动力输出端穿入安装室，齿轮于安装室内与齿条啮合；动触头上具有用于沿其活动方向与绝缘杆导向配合的导向长孔（9）。该三工位隔离接地开关将齿条及齿轮均装配于安装室内，大大改善了绝缘杆周围的电场分布，使隔离接地开关的壳体的内径得以小。

Description

三工位隔离接地开关 技术领域
[0001] 本发明涉及电气设备， 尤其是一种三工位隔离接地幵关。
背景技术
[0002] 市场上目前可见的三工位隔离接地开关的传动结构主要有两种， 一种是拐臂结构， 通过拐臂的输出角度完成三工位的隔离接地功能。 另一类是齿轮齿条结构， 通过齿轮驱动齿 条带动对应的触头活动， 从而完成接地功能。 如申请号为 201010590477.1 的中国专利公开
说
了一种三工位隔离接地开关， 所述三工位隔离接地开关包括壳体、 静触头、 动触头、 动触头 座、 支撑座， 其中支撑座装配于壳体的内腔， 动触头座固定装配于支撑座上， 动触头座内具
书
有沿所述动触头工作时的活动方向延伸的导向通道， 所述动触头导向装配于所述导向通道内 并于外部固定装配有齿条， 支撑座上还转动装配有与所述齿条对应啮合的齿轮， 所述齿轮的 转动轴线的延伸方向与所述导向通道的导向方向垂直， 工作时齿轮通过一绝缘杆与对应的驱 动装置传动连接从而驱动所述动触头工作； 上述三工位隔离接地开关在生产中得到了充分的 应用， 但是在使用中也出现了一些问题。 具体地说， 即由于所述齿轮设置于动触头外部， 所 述齿轮与绝缘杆的交点 （即齿轮的中心） 处偏离了动触头运动的中心， 这直接影响绝缘杆周 围的电场分布， 对开关通过绝缘试验造成影响， 为了改善绝缘杆周围的电场分布， 需增加所 述壳体的内径； 另外， 由于安装齿条的需要， 动触头通常为实心结构， 造成动触头质量增 加， 造成开关操作时操作功增加。
发明内容
[0003] 本发明的目的在于提供三工位隔离接地开关， 以解决现有的采用齿轮齿条传动机构 的三工位隔离接地开关的体积大的问题。
[0004] 为了解决上述问题， 本发明的三工位隔离接地开关采用以下技术方案： 三工位隔离 接地开关， 包括动触头座， 所述动触头座上转动装配有对应的绝缘杆， 所述绝缘杆具有用于 与驱动装置传动连接的动力输入端及装配有齿轮的动力输出端； 动触头座内活动导向装配有 动触头， 所述动触头上固定设置有沿动其活动方向延伸且与所述齿轮啮合的齿条， 其特征在 于： 所述的动触头内具有安装室， 所述齿条装配于所述安装室内； 所述动触头的外壁上具有 至少一个导向长孔， 所述绝缘杆的动力输出端通过对应的导向长孔穿入安装室内且与该导向 长孔在动触头的活动方向上导向配合； 所述的齿轮于安装室内与齿条啮合。
[0005] 所述动触头的外壁上相对设置有两个所述导向长孔， 所述绝缘杆的动力输出端从其
1
确 认 本 说 明 书
中一个导向长孔中穿入所述安装室并延伸至另一导向长孔中。
[0006] 所述动触头于其活动方向上的两端之间具有圆柱形段， 所述齿轮的中心位于所述圆 柱形段的中心线上。
[0007] 由于本发明的三工位隔离接地开关在所述的动触头内设置所述的安装室， 从而可将 所述的齿条及齿轮均装配于所述安装室内， 从而大大地改善了绝所述缘杆周围的电场分布， 使对应隔离接地开关的壳体的内径可以减小， 从而解决了现有的采用齿轮齿条传动机构的三 工位隔离接地开关的体积大的问题； 另外， 由于所述动触头内具有所述安装室， 可知动触头 为空心结构， 从而降低了动触头的质量， 降低了开关操作时的操作功。
附图说明
[0008] 图 1是本发明的三工位隔离接地开关的实施例 1的结构示意图 （带局剖）； 图 2是图 1的 A-A剖视图。
具体实施方式
[0009] 本发明的三工位隔离接地开关的实施例 1 , 如图 1-2所示， 具有壳体 1 , 壳体 1内通 过一盆式绝缘子 2固定装配有动触头座 3, 动触头座 3内具有一导向通道并通过其导向通道 活动导向装配有动触头 4， 壳体 1 内于动触头座 3的导向通道两端处均设置有静触头 5, 动 触头 4内具有一安装室并于其安装室内设置有齿条 6， 齿条 6沿动触头 4的活动方向， 即动 触头座 3的导向通道的导向方向延伸， 动触头座 3上还转动装配有绝缘杆 7， 绝缘杆 7具有 用于与驱动装置传动连接的动力输入端和止旋装配有齿轮 8的动力输出端， 绝缘杆 7的动力 输入端从动触头 4的一侧穿入安装室并伸入安装室的对侧， 齿轮 8位于动触头 4的安装室内 并与齿条 6啮合； 动触头的外壁上具有相对设置的两导向长孔 9， 绝缘杆 7通过其中一个导 向长穿入安装室并与该导向长孔在动触头的活动方向上导向配合， 绝缘杆 7的动力输出端从 一个导向长孔穿入安装室后延伸至另一导向长孔。 由于绝缘杆 7的动力输出端为悬伸结构， 因此导向长孔 9可限制绝缘杆 7的悬伸端在旋转时的抖动； 另外， 由于动触头 4在工作时是 需要往复活动的， 导向长孔 9还可以避免绝缘杆妨碍动触头 4的活动。 本发明的三工位隔离 接地开关在工作过程中， 首先通过对应的驱动装置来驱动绝缘杆转动， 进而通过齿轮驱动齿 条运动， 由于固定装配于动触头上， 因此动触头与齿条同步运动从而实现与静触头的分合； 由于所述的齿条及齿轮均装配于所述安装室内， 从而大大地改善了绝所述缘杆周围的电场分 布， 使对应隔离接地开关的壳体的内径可以减小， 从而解决了现有的采用齿轮齿条传动机构 的三工位隔离接地开关的体积大的问题； 另外， 由于所述动触头内具有所述安装室， 可知动 触头为空心结构， 从而降低了动触头的质量， 降低了开关操作时的操作功。 说 明 书
[0010] 上述实施例中， 还可以只在动触头的一侧上设置所述导向长孔； 还可以在所述动触 头的外壁上设置三个以上所述导向长孔， 且各导向长孔不必相对设置。

Claims

权 利 要 求 书
1. 三工位隔离接地开关， 包括动触头座， 所述动触头座上转动装配有对应的绝缘杆， 所述 绝缘杆具有用于与驱动装置传动连接的动力输入端及装配有齿轮的动力输出端； 动触头座内 活动导向装配有动触头， 所述动触头上固定设置有沿动其活动方向延伸且与所述齿轮啮合的 齿条， 其特征在于： 所述的动触头内具有安装室， 所述齿条装配于所述安装室内； 所述动触 头的外壁上具有至少一个导向长孔， 所述绝缘杆的动力输出端通过对应的导向长孔穿入安装 室内且与该导向长孔在动触头的活动方向上导向配合； 所述的齿轮于安装室内与齿条啮合。
2.根据权利要求 1 所述的三工位隔离接地开关， 其特征在于： 所述动触头的外壁上相对设 置有两个所述导向长孔， 所述绝缘杆的动力输出端从其中一个导向长孔中穿入所述安装室并 延伸至另一导向长孔中。
3.根据权利要求 1 或 2所述的三工位隔离接地开关， 其特征在于： 所述动触头于其活动方 向上的两端之间具有圆柱形段， 所述齿轮的中心位于所述圆柱形段的中心线上。
PCT/CN2012/000900 2011-07-12 2012-06-30 三工位隔离接地开关 WO2013007101A1 (zh)

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CN201110194439.9 2011-07-12

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CN102254730B (zh) * 2011-07-12 2013-11-27 平高集团有限公司 三工位隔离接地开关
CN111192768A (zh) * 2019-12-17 2020-05-22 河南平高电气股份有限公司 一种动触头组件及使用该动触头组件的开关设备
CN113035627B (zh) * 2021-03-29 2023-12-29 山东泰开电力开关有限公司 一种单体分箱式线性三位置开关结构及其使用方法

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