WO2013120237A1 - 一种新型共静触头结构 - Google Patents

一种新型共静触头结构 Download PDF

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Publication number
WO2013120237A1
WO2013120237A1 PCT/CN2012/000898 CN2012000898W WO2013120237A1 WO 2013120237 A1 WO2013120237 A1 WO 2013120237A1 CN 2012000898 W CN2012000898 W CN 2012000898W WO 2013120237 A1 WO2013120237 A1 WO 2013120237A1
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WO
WIPO (PCT)
Prior art keywords
static contact
isolating switch
fixed contact
finger
contact assembly
Prior art date
Application number
PCT/CN2012/000898
Other languages
English (en)
French (fr)
Inventor
刘泽洪
王占杰
孙玉洲
徐光辉
Original Assignee
平高集团有限公司
河南平高电气股份有限公司
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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 WO2013120237A1 publication Critical patent/WO2013120237A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • 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
    • H01H31/02—Details

Definitions

  • the utility model relates to a high-voltage switch device, in particular to a high-voltage isolating switch static contact assembly.
  • the pole line anti-valve side isolating switch and the bypass bus bar isolating switch are two separately installed DC isolating switches.
  • 8I6KV DC isolating switch a single 816KV DC isolating switch The price is about 2 million yuan, and the two isolation switches need nearly 4 million yuan, resulting in a large investment in power station construction, and the installation time of the two DC isolation switches is long, and the cost of use and maintenance is also high. It also needs to occupy a large land area, which is not conducive to energy conservation and utilization, and does not meet the requirements of environmental protection.
  • the purpose of the utility model is to provide a combined static contact assembly of a high-voltage isolating switch, so that two sets of isolating switches can share a set of static contacts, thereby solving the problem that the independently installed high-voltage isolating switch has a large area and investment. High problem.
  • a high-voltage isolating switch combined static contact assembly comprising a mounting seat, wherein a first static connection for respectively connecting with the corresponding moving contact is mounted on the mounting seat through a correspondingly disposed fixing bracket And a second static contact and a terminal electrically connected to the first fixed contact and the second fixed contact by a conductive device.
  • the first static contact and the second static contact are respectively rotatably mounted on the fixing bracket by a horizontally arranged hinge shaft, and the rotation axes of the two static contacts are located in the same plane and perpendicular to each other, and the conductive device is provided There is a flexible conductive strip for connecting the first stationary contact and the second stationary contact, respectively. .
  • the fixing bracket includes two vertical connecting plates disposed on opposite sides of the corresponding static contact, and two connecting plates are disposed on the connecting plate corresponding to the two vertical columns, and the hinge shaft is disposed on the adjacent connecting plate and the vertical column. between.
  • the conductive device includes left and right conductive plates disposed at opposite intervals on the connection terminal, and the first static contact and the second static contact respectively correspond to the left and right conductive plates by correspondingly disposed conductive strips. connection.
  • the static contact comprises a finger, the finger is vertically fixed on the correspondingly arranged wiring board, and a guiding cover is concentrically sleeved on the periphery of the finger, and one end of the guiding cover is a cylindrical tube structure and is fixedly connected with the terminal board. The other end is provided with a guide portion which gradually enlarges into a bell mouth structure.
  • a protective cover is slidably sleeved on the finger, and an elastic member is mounted between the protective cover and the terminal block, and a rib corresponding to the outer surface of the protective cover is radially protruded on the inner wall of the guiding cover .
  • a lubrication ring is disposed between the protective cover and the finger.
  • the combined static contact assembly of the utility model is provided with two sets of static contacts mounted on the mounting seat through the fixing bracket, so that the two static contacts are respectively connected with the pole line flat anti-valve side isolating switch and the bypass bus bar isolating switch, so that
  • the two sets of isolating switches share a set of static contact assemblies, which not only saves land resources in terms of construction of the power station, but also increases the construction speed and saves the installation period, especially after reducing one static contact assembly.
  • the purchase cost of the isolating switch is about 200,000 yuan, which reduces the investment in the power station and reduces the installation and maintenance costs.
  • FIG. 1 is a front view of a specific embodiment of a high-voltage isolating switch combined static contact assembly of the present invention
  • Figure 2 is a plan view of Figure 1;
  • FIG. 3 is a schematic structural view of the first stationary contact of FIG. 1.
  • the specific embodiment of the high-voltage isolating switch combined static contact assembly of the present invention is as shown in FIG. 1, FIG. 2 and FIG. 3, and the combined static contact assembly is mounted on the mounting seat 1 through correspondingly disposed fixing brackets.
  • a first static contact 4 and a second static contact 8 respectively connected to the corresponding DC isolating switch moving contact, and a terminal 2 is fixed on the mounting seat 1, the first static contact 4 and the second static contact
  • the head 8 is electrically connected to the terminal 2 via a correspondingly disposed conductive device.
  • the first static contact 4 and the second static contact 8 have the same structure, the first static contact 4 is provided with a first wiring board 14 , and the second static contact 8 is provided with a second wiring board 14 ′.
  • the first static contact 4 is taken as an example.
  • the terminal block 14 is vertically fixed with a finger 22, and the periphery of the finger 22 is concentrically sleeved with a guiding cover 18, and one end of the guiding cover 18 is a cylindrical tube.
  • the structure is fixedly connected to the terminal block 14, and the other end is provided with a guiding portion which gradually enlarges into a bell mouth structure.
  • a protective cover 20 is slidably sleeved on the finger 22, and a spring 19 is mounted between the protective cover 20 and the terminal block 14.
  • the spring 19 is sleeved on the finger 22, and is radially disposed on the inner wall of the guide cover 18.
  • a rib that protrudes in engagement with the outer surface of the corresponding protective cover 20 is protruded inward.
  • a lubrication ring 21 is also provided between the boot 20 and the finger 18.
  • the protective cover is placed on the finger to effectively solve the influence of the DC adsorption effect on the isolation switch contact, and ensure the reliable contact between the movable and static contacts after the isolation switch is closed.
  • the lubricating ring 21 mainly reduces the frictional force generated by the protective cover 20 during the opening and closing of the isolating switch and the contact between the contacts, and ensures that the movable switch of the isolating switch can be smoothly Accurate insertion of the static contacts.
  • the fixing bracket comprises vertical columns 3 respectively fixed vertically on the two sides of the corresponding static contacts 4, 8.
  • the fixed plates 5 are bridged on the tops of the opposite two columns 3, respectively corresponding to the wiring plates 14 of the two stationary contacts 4, 8.
  • a connecting plate 7 is disposed at a distance between the two sides of the column, and a hinge shaft is horizontally disposed between the adjacent connecting plate 7 and the column 3.
  • the two hinge axes of each of the static contacts are coaxially disposed, so that the two static contacts are 4, 8 are respectively hinged in the corresponding fixing brackets and can be deflected up and down through the corresponding hinge shaft, and cooperate with the guiding cover 18 to facilitate the smooth closing of the isolating switch.
  • the conductive means includes a left conductive plate 12 and a right conductive plate 15 which are disposed at intervals on the terminal 2, and the first stationary contact 4 passes through the first left conductive strip 13 and the first right conductive strip 16 connected to the wiring board 14 thereof.
  • the second static contact 8 is respectively electrically connected to the left by the second left conductive strip 6 and the second right conductive strip 11 connected to the wiring board 14'
  • the board 12 and the right conductive board 15 are electrically connected.
  • the utility model utilizes a conductive strip and a conductive plate to realize a reliable electrical connection between the two static contacts and the connection terminal, and can not only utilize the flexibility of the conductive strip to avoid affecting the up and down swing of the static contact during the opening and closing of the isolating switch.
  • the common static contact structure can meet the requirements of the DC transmission system for the DC isolation switch flow capacity, and can reduce the production cost of the DC isolation switch, reduce the equipment footprint, and improve the effective use of land resources.
  • a mounting plate 9 for fixing to the stationary contact mounting bracket is also fixed to the bottom of the mount 1.
  • the combined static contact assembly of the utility model installs the static contacts of two sets of DC isolation switches on a mounting seat, and forms a reliable electrical connection between the two static contacts through the conductive plate and the conductive strip, thereby making the two DCs
  • the isolating switch shares a set of static contacts.
  • the three-column porcelain bottle, two equalizing rings and two brackets can be used less, which saves the investment of raw materials and can save about 200,000 yuan.
  • the production cost of the DC isolation switch is reduced, and the maintenance cost of the DC isolation switch is also reduced. According to the "12th Five-Year Plan" of the State Grid Corporation, 8 800kV UHV DC transmission projects will be constructed during the period, according to each converter station.
  • the two common static contact DC isolation switch structure is more compact Reducing the area of the power station, it can improve the effective use of land resources, to promote the protection of our limited resources, to meet the requirements of environmental protection at present, with good economic and social benefits.
  • the utility model is not limited to the above embodiment, and a conductive belt or a conductive layer may be used between the two static contacts and the connection terminal.
  • the plate is directly electrically connected; the spring sleeved on the contact finger of the static contact can also adopt other elastic members such as a tower spring, a disc spring, etc.; the angle between the two static contacts can also be set according to requirements, the above technical solutions All are within the scope of protection of the present invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

一种高压隔离开关组合式静触头组件，包括安装座（1），在安装座上通过对应设置的固定支架安装有用于分别与相应动触头连接的第一静触头（4）和第二静触头（8）以及通过导电装置分别与该第一静触头和第二静触头电连接的接线端子（2）。该静触头组件在安装座上通过固定支架安装两套静触头，使两静触头分别与极线平抗阀侧隔离开关及旁路母线隔离开关连接，使两套隔离开关共用一套静触头组件，从而在电站的建设上，不仅节省了土地资源，而且可以提高建设速度，节省安装周期，降低电站投资，并且降低了安装和维持成本。

Description

说 明 书
一种新型共静触头结构 技术领域
本实用新型涉及一种高压开关设备， 确切的说是涉及一种高压隔离开关静触头组件。 背景技术
目前， 国内、 外直流输电工程中， 极线平抗阀侧隔离开关和旁路母线隔离开关采用的 是两台单独安装的直流隔离开关， 以 8I6KV直流隔离开关为例， 单台 816KV直流隔离开 关的售价为 200万元左右， 两台隔离开关就需要近 400万元， 造成电站建设投资较大， 而 且两台直流隔离开关的安装工期较长， 使用和维护的成本也较高， 安装时还需要占用较大 的土地面积， 即不利于能源节约利用， 也不符合环境保护的要求。
实用新型内容
本实用新型的目的是： 提供一种高压隔离开关的组合式静触头组件， 以使两套隔离开 关可以共用一套静触头， 从而解决独立安装的高压隔离开关占地面积大、 投资较高的问 题。
本实用新型的技术方案是： 一种高压隔离开关组合式静触头组件， 包括安装座， 在所 述安装座上通过对应设置的固定支架安装有用于分别与相应动触头连接的第一静触头和第 二静触头以及通过导电装置分别与该第一静触头和第二静触头电连接的接线端子。
所述的第一静触头与第二静触头分别通过水平设置的铰链轴转动装配在固定支架上， 两静触头的转动轴线位于同一平面内并相互垂直， 所述的导电装置中设有用于分别连接第 一静触头和第二静触头的柔性导电带。。
所述的固定支架包括相对间隔设置在对应静触头两侧的立柱， 在所述接线板上对应两 立柱相对间隔设置有两连接板， 所述的铰链轴设置于相邻的连接板与立柱之间。
所述的导电装置包括相对间隔设置在接线端子上的左、 右导电板， 所述的第一静触头 与第二静触头分别通过对应设置导电带与所述左、 右导电板对应电连接。
所述的静触头包括触指， 该触指垂直固定在对应设置的接线扳上， 在触指的外围同心 套设有导向罩， 导向罩的一端为圆柱筒结构并与接线板固定连接， 其另一端设有逐渐向外 扩大呈喇叭口结构的导向部。 在所述触指上滑动套设有保护罩， 并在保护罩与接线板之间顶装有弹性件， 在导向罩 的内壁上径向凸设有与保护罩外表面挡止配合的挡沿。
在所述保护罩与触指之间设有润滑圈。
本实用新型的组合式静触头组件是在安装座上通过固定支架安装有两套静触头， 使两 静触头分别与极线平抗阀侧隔离开关及旁路母线隔离开关连接， 使两套隔离开关共用一套 静触头组件， 从而在电站的建设方面来说， 不仅节省了土地资源， 而且可以提高建设速 度， 节省安装周期， 特别是减少了一个静触头组件后可以节省直流隔离开关的购买成本 20 万元左右， 从而降低了电站的投资， 并且降低了安装和维护成本。
附图说明
图 1为本实用新型高压隔离开关组合式静触头组件具体实施例的主视图；
图 2为图 1的俯视图；
图 3为图 1中第一静触头的结构示意图。
具体实施方式
本实用新型的高压隔离开关组合式静触头组件的具体实施例如图 1、 图 2、 图 3 所 示， 该组合式静触头组件是在安装座 1 上通过对应设置的固定支架安装了两个分别与相应 直流隔离开关动触头连接的第一静触头 4和第二静触头 8, 在安装座 1上还固定有接线端 子 2, 该第一静触头 4与第二静触头 8分别逋过对应设置的导电装置与该接线端子 2电连 接。 其中， 第一静触头 4与第二静触头 8的结构相同， 第一静触头 4 中设有第一接线板 14， 第二静触头 8中设有第二接线板 14'， 此处以第一静触头 4为例， 如图 3所示， 接线 板 14上垂直固定有触指 22， 触指 22的外围同心套设有导向罩 18， 该导向罩 18的一端为 圆柱筒结构并与接线板 14 固定连接， 另一端设有逐渐向外扩大呈喇叭口结构的导向部。 在触指 22上滑动套设有保护罩 20, 在保护罩 20与接线板 14之间顶装有弹簧 19， 弹簧 19 套设在触指 22上， 在导向罩 18的内壁上径向设有向内突出与对应保护罩 20外表面挡止 配合的挡沿。 为增加保护罩 20与触指 22之间的密封， 其在保护罩 20与触指 18之间还设 有润滑圈 21。 在触指上套设保护罩， 可以有效的解决隔离开关触头受到直流吸附效应的影 响， 保证隔离开关合闸后动、 静触头之间的可靠接触。 而润滑圈 21 主要是减小保护罩 20 在隔离开关分合闸过程中移动从而与触头之间产生的摩擦力， 保证隔离开关动触头能够顺 利准确的插入静触头。
固定支架包括分别竖直固定在对应静触头 4、 8两侧的立柱 3， 在相对的两立柱 3的顶 部桥接有固定板 5, 在两静触头 4、 8的接线扳 14上分别对应其两侧的立柱相对间隔设置 有连接板 7, 在相邻的连接板 7与立柱 3之间水平设有铰链轴， 每个静触头的两铰链轴同 轴设置， 从而使两静触头 4、 8分别铰接在相应的固定支架中并通过对应的铰链轴可上下 偏转， 其与导向罩 18配合便于隔离开关顺利合闸。
导电装置包括相对间隔设置在接线端子 2上的左导电板 12和右导电板 15， 第一静触 头 4通过连接在其接线板 14上的第一左导电带 13和第一右导电带 16分别与左导电板 12 和右导电板 15对应电连接； 第二静触头 8上分别通过连接在其接线板 14'上的第二左导电 带 6、 第二右导电带 11分别与左导电板 12、 右导电板 15对应电连接。 其利用导电带和导 电板在两静触头与接线端子之间实现可靠电连接， 不仅可以利用导电带的柔轫性避免其在 隔离开关分合闸过程中对静触头上下摆动造成影响， 而且这种共静触头结构能够满足直流 输电系统对直流隔离开关通流能力的要求， 并能够降低直流隔离开关的生产成本， 减少设 备的占地面积， 提高土地资源的有效利用。
在安装座 1的底部还固定有用于与静触头安装架固连的安装板 9。
本实用新型的组合式静触头组件将两套直流隔离开关的静触头安装在一个安装座上， 并通过导电板和导电带在两静触头之间形成可靠电连接， 从而使两直流隔离开关共用一套 静触头， 其与现有技术相比， 可以少用 3柱瓷瓶、 2个均压环及 2个支架焊装， 节省了原 材料的投入， 大约能节省成本 20万元， 降低了直流隔离开关的生产成本， 而且直流隔离 开关的维护成本也有所减低， 根据国家电网公司 "十二五"规划， 期间将建设 8 条士 800kV特高压直流输电工程， 按照每个换流站配置 2台共静触头直流隔离开关， 市场份额 为 60%计算， 可节省成本 384万元左右， 其不仅加快了电站的建设速度， 缩短了建设周 期， 而且有利于减少整个直流输电工程的造价， 为我国的直流输电工程建设节约资金投 入， 同时， 两台共静触头直流隔离开关结构更加的紧凑， 降低了电站的占地面积， 可以提 高土地资源的有效利用， 促进我国有限资源的保护， 符合目前环境保护的要求， 具有良好 的经济效益和社会效益。
本实用新型不局限于上述实施例， 两静触头与接线端子之间还可以采用导电带或导电 板直接电连接;，套设在静触头触指上的弹簧还可以采用塔簧、 碟簧等其它弹性件，； 两静 触头之间的夹角也可以根据需要设置， 以上各技术方案均在本实用新型的保护范围之内。

Claims

权 利 要 求 书
1. 一种高压隔离开关组合式静触头组件， 包括安装座， 其特征在于， 在所述安 装座上通过对应设置的固定支架安装有用于分别与相应动触头连接的第一静触 头和第二静触头以及通过导电装置分别与该第一静触头和第二静触头电连接的 接线端子。
2. 根据权利要求 1所述的高压隔离开关组合式静触头组件， 其特征在于， 所述 的第一静触头与第二静触头分别通过水平设置的铰链轴转动装配在固定支架上， 两静触头的转动轴线位于同一平面内并相互垂直，所述的导电装置中设有用于分 别连接第一静触头和第二静触头的柔性导电带。
3. 根据权利要求 2所述的高压隔离开关组合式静触头组件， 其特征在于， 所述 的固定支架包括相对间隔设置在对应静触头两侧的立柱，在所述接线板上对应两 立柱相对间隔设置有两连接板， 所述的铰链轴设置于相邻的连接板与立柱之间。
4. 根据权利要求 2所述的高压隔离开关组合式静触头组件， 其特征在于， 所述 的导电装置包括相对间隔设置在接线端子上的左、右导电板，所述的第一静触头 与第二静触头分别通过对应设置的柔性导电带与所述左、 右导电板对应电连接。
5. 根据权利要求 1至 4任意一项所述的高压隔离开关组合式静触头组件， 其特 征在于， 所述的静触头包括触指， 该触指垂直固定在对应设置的接线板上，在触 指的外围同心套设有导向罩， 导向罩的一端为圆柱筒结构并与接线板固定连接， 其另一端设有逐渐向外扩大呈喇叭口结构的导向部。
6. 根据权利要求 5所述的高压隔离开关组合式静触头组件， 其特征在于， 在所 述触指上滑动套设有保护罩，并在保护罩与接线板之间顶装有弹性件，在导向罩 的内壁上径向凸设有与保护罩外表面挡止配合的挡沿。
7. 根据权利要求 5所述的高压隔离开关组合式静触头组件， 其特征在于， 在所 述保护罩与触指之间设有润滑圈。
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CN201048104Y (zh) * 2007-03-07 2008-04-16 湖南长高高压开关集团股份公司 1100kV特高压接地开关
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