WO2013181928A1 - 一种电气开关设备的导电连接装置 - Google Patents

一种电气开关设备的导电连接装置 Download PDF

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Publication number
WO2013181928A1
WO2013181928A1 PCT/CN2013/000655 CN2013000655W WO2013181928A1 WO 2013181928 A1 WO2013181928 A1 WO 2013181928A1 CN 2013000655 W CN2013000655 W CN 2013000655W WO 2013181928 A1 WO2013181928 A1 WO 2013181928A1
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WIPO (PCT)
Prior art keywords
contact
seat
contact seat
conductive tube
finger
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PCT/CN2013/000655
Other languages
English (en)
French (fr)
Inventor
郭学凤
林麟
王振
孙清超
Original Assignee
国家电网公司
河南平高电气股份有限公司
平高集团有限公司
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Application filed by 国家电网公司, 河南平高电气股份有限公司, 平高集团有限公司 filed Critical 国家电网公司
Publication of WO2013181928A1 publication Critical patent/WO2013181928A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/066—Devices for maintaining distance between conductor and enclosure
    • H02G5/068—Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/0358—Connections to in or out conductors

Definitions

  • the present invention relates to the field of electrical equipment, and in particular, to an electrical connection device for an electrical switchgear.
  • the contact form of the busbar and the electrical connection mainly has two types of crimping type and plug-in type, wherein the plug-in type mostly adopts a contact seat with a spring finger or a strap finger. , or install a spring finger or strap finger on the conductive tube.
  • a gas-insulated metal-enclosed switchgear conductive connection device in which a columnar contact seat fixed on a connection insert of an insulating basin is provided with a blind hole for the conductive tube to extend, and in the blind hole
  • the blind end is provided with a guiding bolt which can fix the contact seat on the connecting insert of the insulating basin and can extend into the inner hole of the conducting tube to ensure the coaxiality of the guiding tube and the blind hole, but with the gas
  • the technical parameters such as the rated current of the insulated metal-enclosed switchgear are getting higher and higher.
  • the cross-sectional diameter of the contact holder and the conductive tube is also increased, and the commonly used contact holder It is made of a single piece of metal. It needs to take into account both the optimization of the electric field and the flow of the load-bearing conductor. Therefore, the higher the switching parameter, the larger the volume and quality of the contact seat itself, and the higher the manufacturing cost.
  • the present invention provides an electrical connection device for an electrical switchgear, which aims to solve the problem that the shape and volume of the contact seat of the prior art is large and the manufacturing cost is high.
  • An electrical connection device for an electrical switch device comprising: a columnar contact holder extending in a front-rear direction; a contact finger and an insulating guide mounted on the contact holder; and a conductive tube electrically connected to the contact holder through the contact finger, a contact finger mounting groove for mounting a contact finger is disposed on the contact base, the insulating guide member has a guiding end that is guidingly engaged with the conductive tube in the front-rear direction, and a tapered end portion that is gradually narrowed in a direction away from the guiding end,
  • the finger mounting groove is located on the outer circumference of the contact seat, and the rear end a of the conductive tube is disposed around the outer peripheral surface of the contact seat, and the outer circumference of the contact seat is provided on the outer circumference of the rear end of the conductive tube for shielding a shielding cover of the thin plate rotating body structure at the junction of the contact seat and the conductive tube, and a connecting hole is formed at a front end of the contact seat, and
  • the blind end hole wall of the connecting blind hole is provided with a screw hole for connecting the contact seat to the insulating basin by connecting a screw: the connecting hole of the screw, the screw hole is along the contact seat Axial extension and opening on the insulation guide
  • the ejector hole is provided with a escaping passage for the connecting screw to pass through, and the escaping passage extends in the front-rear direction and communicates with the connecting blind hole.
  • the holes for the screws have at least two holes and are evenly distributed in the radial interval of the contact holders.
  • the outer circumferential surface of the contact seat is convexly provided with a limiting platform on the rear side of the finger mounting groove.
  • the outer periphery of the contact seat is provided with a cushion or a buffer spring between the limiting platform and the finger mounting groove.
  • the present invention separates two functions of an optimized electric field and a current carrying current of a contact holder in the prior art, and is divided into a shield for optimizing an electric field and a contact holder for carrying current, and the contact finger
  • the mounting groove is on the outer peripheral wall of the contact seat, so that the outer peripheral surface of the guiding end of the insulating guide is exposed from the outer peripheral surface of the contact seat to be in contact with the inner wall surface of the conductive tube, so that the blind hole structure of the contact seat is removed in the prior art.
  • the shape and volume of the contact seat are reduced, and the contact seat r: the processing difficulty of the spoon is reduced, the manufacturing cost of the contact seat is reduced, and the shape and mass of the contact seat itself are solved. The problem of high manufacturing costs.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • the conductive connecting device includes a cylindrical casing 1, an insulating basin 2 mounted on a port of the casing 1, and an insulating basin 2
  • a shield cover 6 embedded between the contact holder 5 and the connection insert 3 and an inner wall surface of the cover 6 and contact
  • the outer circumference of the conductive tube 7 and the contact holder 5 in the annular gap between the outer peripheral surfaces of the headstock 5 are: 3 ⁇ 4 spring fingers 8 and the detachable fixing of the contact holder 5 away from the end of the connection insert 3 a guide member 9, wherein the conduit 7 is integrally provided with the bus bar conductor such that the front end of the conductive tube 7 has a connection integrally connected with the bus bar conductor, and the top of the insect head holder 5 is provided for connecting the contact seat 5 by the connection screw 4
  • the gap-engaged opening end 6-2; the insulating guide: the two ends of the member 9 are respectively a guiding end and a cone end, wherein the guiding section is convexly provided with a connection protruding into the contact hole 5 of the contact hole 5-5 ⁇
  • the table 9-1, the outer periphery of the connecting table 9-1 is machined with an external thread, and the insulating guide 9 is connected to the contact holder 5 through the coaxial 9b of the connecting table 9-1, and the outer peripheral surface of the guiding end of the insulating guide 9 It is raised from the outer peripheral surface of the contact holder 5, and is higher than the guide portion 9-2 for guiding engagement with the conductive tube 7 in the front-rear direction; the tapered end is the side facing away from the guide end:] a tapered tapered structure, and a relief passage 9-3 corresponding to the screw hole 5-1 provided on the contact seat 5 for the head of the connecting screw 4 to pass through is formed at the end of the cone,
  • the escape channel 9-3 is
  • the contact holder 5 and the shield cover 6 are first fixed on the connection bracket 3 of the insulating basin by the connecting nail 4, and then the cushion 5-4 is mounted on the contact holder 5.
  • the position between the outer peripheral surface upper limit table 5-3 and the finger mounting groove, and then the spring contact finger 8 is mounted in the finger mounting groove 5-2 on the contact holder 5 to connect the insulating guide 9 3 ⁇ 4
  • the table 9-1 is coaxially screwed onto the connection blind hole 5-5 on the contact holder 5, and the conductive tube 7 is inserted into the annular gap between the inner wall surface of the shield case 6 and the outer peripheral surface of the contact holder, and at the same time
  • the peripheral wall of the conductive tube 7 is in contact with the guiding section 9-2 of the insulating guide 9 and the spring finger 8, respectively.
  • the shield cover 6 is formed by spinning a thin-walled metal plate or cast into a thin plate rotating body as needed, and the outer shape of the shield cover 6 is determined according to an electric field structure to be optimized; the finger mounting groove 5 -2 the number is more than one (including one), four or less (including four), the specific quantity is determined according to the required flow capacity between the conductive tube 7 and the contact seat; the conductive tube 7 is integrally provided with the bus conductor, and
  • the conductive tube 7 is a hollow tube made of a conductive material, such as an aluminum, aluminum alloy, copper, copper alloy or the like, because the structure for soldering the conductive tube 7 to the stationary contact body (not shown) is eliminated.
  • the conductive tube 7 can also be made of a thin-walled material such as a simply processed tube profile, thereby reducing the manufacturing cost. 3 Saving metal material;
  • the insulating guide 9 is made of a flexible insulating material, and the tapered structure
  • the shielding cover 6 is partially protruded. This design can prevent the conductive tube 7 from colliding with the shielding cover 6 during the process of installing the conductive tube 7 to the contact head holder 5, and the deformation of the shielding cover 6 affects it.
  • the function of shielding the electric field can guide the conductive tube 7 to correctly contact the spring contact finger 8; the limited position table 5-3 and the cushion pad 5 ⁇ 4 are arranged on the outer peripheral surface of the contact seat 5, the limit table 5-3 and the contact
  • the seat 5 is a unitary structure, and the same limit table 5-3 is located on the side of the finger mounting groove 5-2 away from the mounting position of the insulating guide 9.
  • the main purpose of the setting table 5-3 is to prevent the conductive tube 7 from being installed and During the use of the transitional displacement, and the collision of the shield 6, causing the deformation of the shield 6 affects its function of shielding the electric field, the purpose of the installation of the cushion 5-4 is to avoid the direct contact between the limiter 5-3 and the conductive tube 7, making. "The two are damaged.
  • the outer periphery of the contact holder is provided with a limiting platform and a cushion for defining the axial position of the conductive tube.
  • the cushion can also be replaced by a buffer spring, and The limit table and the cushion are removed, that is, the axial direction of the conductive tube is ensured by the friction between the spring finger and the conductive tube and between the guide and the conductive tube.
  • the finger mounted in the finger mounting slot is a spring finger, and in other embodiments, the spring: I finger can also be replaced with a strap finger.
  • the contact holder is fixed to the connecting insert on the insulating basin by a connecting screw, in which: 2
  • the contact seat can also be fixed on the connecting insert on the insulating basin by welding, bolting, etc., when the contact seat is fixed on the connecting insert by welding, the insulating guide is It is also possible not to open the avoidance through hole, and the corresponding connecting table is a solid body.
  • the shield cover is embedded between the contact seat and the connecting insert through the closing end thereof.
  • the shield can also be assembled through the receiving end at the contact end. On the outer circumference.

Abstract

一种电气开关设备的导电连接装置，该导电连接装置将现有技术中的触头座具有的优化电场和承载电流的两种功能分离，分成用于优化电场的屏蔽罩和用于负责承载电流的触头座，并使触指安装槽处于触头座的外周壁上，使绝缘导向件导向端的外周面从触头座的外周面露出以与导电管的内壁面接触，从而将现有技术中触头座的盲孔结构去除，使得触头座的外形体积和质量减小，并减小了触头座的加工难度，降低了触头座的制造成本，进而解决了技术中触头座的自身外形体积和质量大，制造成本高的问题。

Description

一种电气开关设备的导电连接装置 技术领域
[0001] 本发明涉及电气设备技术领域， 尤其涉及一种电气开关设备的导电连接装置。
背景技术
[0002] 目前， 气体绝缘金属封闭开关设备中， 母线与电连接的接触形式主要有压接式和插 入式两种， 其中插入式多采用带有弹簧触指或者表带触指的触头座， 或者在导电管上安装弹 簧触指或者表带触指。 例如一种气体绝缘金属封闭开关设备导电连接装置， 该导电连接装置 中固定在绝缘盆子的连接嵌件上的柱状的触头座上开设有供导电管伸入的盲孔， 并在盲孔的 盲端旋设有既能将触头座固定在绝缘盆子的连接嵌件上、 又能伸入导电管的内孔中保证导 ¾ 管与盲孔的同轴度的导向螺栓， 但是随着气体绝缘金属封闭开关设备的额定电流等技术参数 越来越高， 根据交流电的趋肤效应， 其中的触头座和导电管的截面直径尺寸也越造越大， 而 这种普遍使用的触头座是由整块金属制造， 它需要兼顾优化电场和承载导体通流两种功能， 所以存在开关参数越高， 触头座的自身外形体积和质量越大， 制造成本越高的问题。
发明内容
[0003] 本发明提出了一种电气开关设备的导电连接装置， 旨在解决现有技术中触头座的目 身外形体积和质量大， 制造成本高的问题。
[0004] 本发明的电气开关设备的导电连接装置的技术方案如下：
一种电气开关设备的导电连接装置， 包括沿前后方向延伸的柱状的触头座、 触头座上装设的 触指和绝缘导向件、 通过触指与触头座电连接的导电管， 所述触头座上开设有用于安装触指 的触指安装槽， 所述绝缘导向件具有与导电管沿前后方向导向配合的导向端以及横截面向远 离导向端的方向逐渐缩小的锥体端， 所述触指安装槽处于触头座的外周上， 导电管的后端 a 设在触头座的外周面周围， 所述触头座的外周上装设有用于罩设在导电管的后端外周上以包 裹触头座和导电管的连接处的薄板旋转体结构的屏蔽罩， 并在触头座的前端开设有连接 孔， 所述绝缘导向件的导向段向后凸设有用于插入所述连接盲孔中的连接台， 并在所述连接 台的外周上加工有外螺纹， 所述绝缘导向件通过所述连接台同轴螺纹连接在触头座上， 且¾ 缘导向件的导向端的外周面从触头座的外周面髙出， 并与导电管的内壁面沿前后方向导向 合。
[0005] 所述连接盲孔的盲端孔壁上开设有用于通过连接螺钉以将触头座固定在绝缘盆子 :〕 连接嵌件上的螺钉用孔， 所述螺钉用孔沿触头座的轴向延伸， 并在绝缘导向件上开设有与
1
确认本 说 明 书
钉用孔对应设置的用于供连接螺钉穿过的避让通道， 所述避让通道沿前后方向延伸并与连接 盲孔连通。
[0006] 所述螺钉用孔有至少两个， 并在触头座的径向间隔均匀分布。
[0007] 所述触头座的外周面上凸设有处于触指安装槽后侧的限位台。
[0008] 所述触头座的外周上装设有处于限位台和触指安装槽之间的缓冲垫或缓冲弹簧。
[0009] 本发明将现有技术中的触头座具有的优化电场和承载电流的两种功能分离， 分成用 于优化电场的屏蔽罩和用于负责承载电流的触头座， 并使触指安装槽处于触头座的外周壁 上， 使绝缘导向件导向端的外周面从触头座的外周面露出以与导电管的内壁面接触， 从而 现有技术中触头座的盲孔结构去除， 使得触头座的外形体积和质量减小， 并减小了触头座 r:勺 加工难度， 降低了触头座的制造成本， 进而解决了技术中触头座的自身外形体积和质量大， 制造成本高的问题。
附图说明
[0010] 图 1是本发明的实施例 1的结构示意图。
具体实施方式
[0011] 本发明的电气开关设备的导电连接装置的实施例： 如图 1所示， 该导电连接装置包 筒状壳体 1、 壳体 1 的端口上装设的绝缘盆子 2、 绝缘盆子 2的连接嵌件 3上通过连接螺 4可拆固定的柱状的触头座 5、 触头座 5与连接嵌件 3之间嵌设固定的屏蔽罩 6、 插配在 蔽罩 6的内壁面和触头座 5的外周面之间的环形间隙中的导电管 7、 触头座 5的外周上装:: ¾ 的弹簧触指 8以及触头座 5的远离连接嵌件 3的一端可拆固定的绝缘导向件 9， 其中， 导 管 7与母线导体一体设置， 从而使得导电管 7的前端具有与母线导体一体连接的连接处， 虫 头座 5的上开设有用于通过连接螺钉 4以将触头座 5固定在绝缘盆子 2的连接嵌件 3上的 S 钉用孔 5-1、 处于触头座 5 的外周壁上的用于安装弹簧触指 8的触指安装槽 5-2、 处于蜂 用孔 5-1前端的连接盲孔 5-5， 螺钉用孔 5-1处于连接盲孔 5-5的盲端孔壁上， 并沿触头座 5 的轴向延伸， 在触头座 5的外周面上设有处于触指安装槽 5-2的一侧的限位台 5-3 以及处 :二 限位台 5-3和触指安装槽 5-2之间的缓冲垫 5-4; 屏蔽罩 6具有嵌设在触头座 5和绝缘盘子 2 的连接嵌件 3之间的收口端 6-1 以及与导电管 7的外周面间隙配合的张口端 6-2; 绝缘导: 件 9的两端分别为导向端和锥体端， 其中导向段向后凸设有伸入触头座 5的连接盲孔 5-5 Π 的连接台 9-1， 连接台 9-1 的外周上加工有外螺纹， 绝缘导向件 9通过连接台 9-1 同轴螺¾ 连接在触头座 5上， 且绝缘导向件 9的导向端的外周面从触头座 5的外周面高出， 高出 为用于沿前后方向与导电管 7导向配合的导向段 9-2; 锥体端为横截面向远离导向端的方:】 逐渐缩小的锥状结构， 并在锥体端上开设有与触头座 5上的螺钉用孔 5-1对应设置的用于供 连接螺钉 4 的头部穿过的避让通道 9-3， 该避让通道 9-3 与触头座 5 上的连接盲孔 5-5 ：£ 通。
[0012] 本实施例在使用时， 先将触头座 5与屏蔽罩 6通过连接嫘钉 4固定在绝缘盆子 勺 连接嵌件 3上， 然后将缓冲垫 5-4安装在触头座 5的外周面上限位台 5-3和触指安装槽 之间的位置， 再后将弹簧触指 8安装在触头座 5上的触指安装槽 5-2中， 将绝缘导向件 9 ¾ 过连接台 9-1同轴螺紋连接在触头座 5上的连接盲孔 5-5上， 将导电管 7插入屏蔽罩 6的内 壁面与触头座的外周面之间的环形间隙中， 同时使导电管 7的管周壁分别与绝缘导向件 9的 导向段 9-2以及弹簧触指 8接触配合。
[0013] 本实施例中屏蔽罩 6 由薄壁金属板材旋压而成或者根据需要铸造成薄板旋转体¾ 构， 而屏蔽罩 6的外形根据需要优化的电场结构而定； 触指安装槽 5-2数量在一个以上 （含 一个）， 四个以下 （含四个）， 具体数量根据所需导电管 7和触头座之间的通流能力决定； 导 电管 7与母线导体一体设置， 且导电管 7是由导电材料制成的中空管， 如铝、 铝合金、 铜、 铜合金等导电材料， 因为免除了将导电管 7焊接在静触头主体 （图中未显示） 上的结构， 所 以导电管 7也可以用经过简单加工过的管型材等薄壁材料制成， 从而降低了加工制造成本. 3 节约了金属材料； 绝缘导向件 9由柔性绝缘材料制成， 并且锥状结构部分突出屏蔽罩 6， 这 样的设计， 可以避免在安装导电管 7对接触头座 5的过程中， 导电管 7与屏蔽罩 6碰撞， it 成屏蔽罩 6变形影响其屏蔽电场的功能， 又可以引导导电管 7正确接触弹簧触指 8; 在触头 座 5的外周面上设置有限位台 5-3和缓冲垫 5·4, 限位台 5-3与触头座 5为一体结构， 同 限位台 5-3位于触指安装槽 5-2远离绝缘导向件 9安装位置的一侧， 设置限位台 5-3的主要 目的是防止导电管 7在安装和使用过程中过渡位移， 而碰撞屏蔽罩 6， 造成屏蔽罩 6变形影 响其屏蔽电场的功能， 加装缓冲垫 5-4的目的是避免限位台 5-3与导电管 7直接接触， 造.「 两者损伤。
[0014] 在上述实施例中， 触头座的外周上设有用于限定导电管轴向位置的限位台和缓 垫， 在其他实施例中， 缓冲垫也可以用缓冲弹簧来代替， 同时也可以去除限位台和缓冲垫， 也就是通过弹簧触指与导电管之间以及导向件与导电管之间的摩擦力保证导电管的轴向 置。
[0015] 在上述实施例中， 触指安装槽内安装的触指为弹簧触指， 在其他实施例中， 弹簧: I虫 指也可以用表带触指来代替。
[0016] 在上述实施例中， 触头座是通过连接螺钉固定在绝缘盆子上的连接嵌件上， 在其: 2 W 实施例中， 触头座也可以通过焊接、 螺栓连接等方式固定在绝缘盆子上的连接嵌件上， 对 的， 当触头座通过焊接方式固定在连接嵌件上时， 绝缘导向件上也可以不开设避让通孔， 对 应的连接台为实心台体。
[0017] 在上述实施例中， 屏蔽罩通过其收口端嵌设在触头座和连接嵌件之间， 在其他实旌 例中， 屏蔽罩也可以通过其收口端过盈装配在触头座的外周上。
说
书

Claims

权 利 要 求 书
1. 一种电气开关设备的导电连接装置， 包括沿前后方向延伸的柱状的触头座、 触头座上装 设的触指和绝缘导向件、 通过触指与触头座电连接的导电管， 所述触头座上开设有用于安 ¾ 触指的触指安装槽， 所述绝缘导向件具有与导电管沿前后方向导向配合的导向端以及横截 : 向远离导向端的方向逐渐缩小的锥体端， 其特征在于： 所述触指安装槽处于触头座的外周 上， 导电管的后端围设在触头座的外周面周围， 所述触头座的外周上装设有用于罩设在导电 管的后端外周上以包裹触头座和导电管的连接处的薄板旋转体结构的屏蔽罩， 并在触头座 前端开设有连接盲孔， 所述绝缘导向件的导向段向后凸设有用于插入所述连接盲孔中的连接 台， 并在所述连接台的外周上加工有外螺纹， 所述绝缘导向件通过所述连接台同轴螺纹连接 在触头座上， 且绝缘导向件的导向端的外周面从触头座的外周面高出， 并与导电管的内壁 沿前后方向导向配合。
2. 根据权利要求 1所述的电气开关设备的导电连接装置， 其特征在于： 所述连接盲孔的盲 端孔壁上开设有用于通过连接螺钉以将触头座固定在绝缘盆子的连接嵌件上的螺钉用孔， : 述螺钉用孔沿触头座的轴向延伸， 并在绝缘导向件上开设有与螺钉用孔对应设置的用于供 -二 接螺钉穿过的避让通道， 所述避让通道沿前后方向延伸并与连接盲孔连通。
3. 根据权利要求 2所述的电气开关设备的导电连接装置， 其特征在于： 所述螺钉用孔有至 少两个， 并在触头座的径向间隔均匀分布。
4. 根据权利要求 1或 2或 3所述的电气开关设备的导电连接装置， 其特征在于： 所述触头 座的外周面上凸设有处于触指安装槽后侧的限位台。
5. 根据权利要求 4所述的电气开关设备的导电连接装置， 其特征在于： 所述触头座的外 上装设有处于限位台和触指安装槽之间的缓冲垫或缓冲弹簧。
PCT/CN2013/000655 2012-06-06 2013-06-04 一种电气开关设备的导电连接装置 WO2013181928A1 (zh)

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