WO2016074525A1 - 一种采用连接母排实现负载侧外接地的三工位真空开关 - Google Patents

一种采用连接母排实现负载侧外接地的三工位真空开关 Download PDF

Info

Publication number
WO2016074525A1
WO2016074525A1 PCT/CN2015/089125 CN2015089125W WO2016074525A1 WO 2016074525 A1 WO2016074525 A1 WO 2016074525A1 CN 2015089125 W CN2015089125 W CN 2015089125W WO 2016074525 A1 WO2016074525 A1 WO 2016074525A1
Authority
WO
WIPO (PCT)
Prior art keywords
grounding
vacuum interrupter
busbar
load
static
Prior art date
Application number
PCT/CN2015/089125
Other languages
English (en)
French (fr)
Inventor
张交锁
陈涛
王家耀
国世峥
Original Assignee
沈阳华德海泰电器有限公司
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 沈阳华德海泰电器有限公司 filed Critical 沈阳华德海泰电器有限公司
Priority to US15/510,240 priority Critical patent/US20170301491A1/en
Publication of WO2016074525A1 publication Critical patent/WO2016074525A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/127—Load break switches comprising a separate circuit breaker movable with a sectionalising contact arm and operated by such movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/002—Movable contacts fixed to operating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • the invention belongs to the technical field of switchgear, and particularly relates to a three-station vacuum switch which realizes external grounding of a load side by connecting a busbar.
  • the existing vacuum switch comprises a bus bar, a vacuum interrupter, a load conductor, a grounding conductor, a three-position switch (isolation bit, a middle position and a grounding position) and an operating mechanism, and the vacuum interrupter is driven by the operating mechanism to realize the splitting.
  • the application patent number CN200710103519.2 discloses a three-position vacuum switch for providing current interruption, isolation and grounding, the three-position vacuum switch including a line bus, a vacuum interrupter, a load conductor, a grounding conductor and an operating mechanism, the vacuum interrupter comprising a static conductor, a dynamic conductor and an insulation cylinder, wherein the static contact and the movable contact are located in the insulation cylinder, and the movable contact can be closed in electrical connection with the static contact The position of the circuit moves between the position of the circuit and the position of the open circuit separated from the static contact, and the load conductor is electrically connected to the movable conductor.
  • the structure of the operating mechanism is: (a) contacting and disconnecting the movable contact with the fixed contact to realize the circuit Closing and disconnecting, and (b) moving the vacuum interrupter between its first position (ie, circuit conduction position) and second position (ie, load side ground position), wherein in the first position
  • the static conductor is electrically connected to the circuit bus, and in the second position the static conductor is electrically connected to the ground conductor.
  • 3D, 3E, 4D and 4E when the load conductor side is grounded, it is first necessary to break the vacuum interrupter, then rotate the vacuum interrupter to the static conductor and the ground conductor, and then vacuum interrupt the arc. When the chamber is closed, the load side grounding can be realized.
  • the problem is that the load grounding process is completely closed due to the vacuum interrupter, which may cause the operator to visually see the grounding condition and cause misoperation, and when the operating mechanism is mechanical or electrical.
  • the vacuum interrupter is first broken and then moved vertically downward.
  • the same problem can be solved by connecting the vacuum interrupter to the static conductor and the grounding conductor, and then closing the vacuum interrupter to achieve the load side grounding. After the static conductor and the grounding conductor are connected, the vacuum interrupter will vibrate when it is closed again. In order to ensure that the vacuum interrupter is well fixed, it will not vibrate when it is closed, and it needs to be externally maintained.
  • the device has a complicated structure and high cost.
  • the problem to be solved by the present invention is to overcome the deficiencies and shortcomings of the prior art, and to provide a simple structure, low cost, high safety, and the operator can intuitively see the load side grounding process and avoid the vacuum interrupter. Out of time A three-station vacuum switch that uses vibration to connect the busbar to the load side and external ground.
  • the technical solution adopted by the invention comprises a conductive seat, a vacuum interrupter, a load base, a grounding seat and a driving shaft, and a connecting busbar is hinged on the front and rear sides of the load base, and one end of the connecting busbar is fixedly connected with the driving shaft, and The movable conductor of the vacuum interrupter is exposed at the top end of the outer portion of the insulating cylinder and is connected with the pin of the connecting busbar.
  • a return spring is installed between the pin and the movable conductor, and the movable end of the connecting busbar is limitedly installed. Position spring.
  • the rotary vacuum interrupter and the connecting busbar realize the main line breaking and the three-station switch function; the connecting busbar and the grounding seat are electrically connected to realize the main grounding, and the vacuum interrupter is electrically connected with the grounding seat to realize the auxiliary grounding.
  • the vacuum interrupter and the conductive seat are separated to realize isolation and division, and the self-closing is realized by the self-closing force, and the reset spring and the limit spring are used to realize the reset after the breaking.
  • the breaking of the vacuum interrupter and the rotation of the connecting busbar enable the three-position switch function to be driven by one drive mechanism.
  • the vacuum interrupter only undertakes the breaking current process, and the insulating gas bears the power frequency and the lightning impulse withstand voltage.
  • the invention realizes the breaking of the main busbar and the function of the three-station switch by rotating the connection busbar and the vacuum interrupter, and adopts the connection busbar to realize the external grounding of the load side, that is, the main grounding, the operator can It is intuitive to see that the breaking of the vacuum interrupter and the rotation of the connecting busbar realize the three-position switch function are driven by a driving mechanism, the structure is simple, the operation is convenient, and the load side grounding is realized compared with the vacuum interrupter closing. Safe and reliable.
  • the invention also has its own auxiliary grounding.
  • the vacuum interrupter automatically closes under the action of the self-closing force, and the auxiliary grounding is realized, and this process is different from the background technology.
  • the static conductor is grounded and the vacuum interrupter is closed to achieve load grounding, which is safe, reliable and easy to operate.
  • the present invention can be manually operated to achieve reliable grounding on the load side.
  • the bridge grounding switch of the invention has a supporting and fixing effect on the vacuum interrupter, and the holding device can be eliminated, so that the structure is simple and the cost is reduced.
  • the vacuum interrupter of the present invention only undertakes the breaking process. After the breaking, the vacuum interrupter and the insulating gas jointly bear the power frequency and the lightning impulse withstand voltage, thereby greatly reducing the occurrence of NSDD (non-maintaining destructive discharge) phenomenon. Probability.
  • FIG. 1 is a schematic view showing a conductive structure of a circuit of the present invention
  • Figure 2 is a plan view of Figure 1
  • Figure 3 is a schematic view showing the circuit of the present invention broken and the isolation is about to be separated
  • FIG. 5 is a schematic view showing the circuit of the present invention disconnected and the vacuum interrupter has been reset
  • Figure 6 is a schematic view showing the circuit of the present invention broken and placed on the load side.
  • the present invention comprises a conductive seat 1, a vacuum interrupter 2, a load base 3 and a grounding seat 5.
  • the connecting busbar 4 is hinged at the front and rear sides of the load base 3, and the end of the busbar 4 is connected.
  • the driving shaft 6 is fixedly connected, and the connecting bus bar 4 can be rotated by the operating mechanism with the driving shaft 6 as a center.
  • the vacuum interrupter 2 is composed of the movable electric conductor 2-3, the movable contact 2-4, and the static conductive.
  • the head 2-4 is welded integrally, a part of the movable conductor 2-3 is exposed outside the insulating cylinder 2-5, and the movable conductor 2-3 is exposed at the top end of the outer section of the insulating cylinder 2-5 and the connecting busbar 4 is passed.
  • the pin 7 is connected, and a return spring 8 is mounted between the pin 7 and the movable conductor 2-3. One end of the return spring 8 is connected to the pin 7 and the other end is crimped to the movable conductor 2-3.
  • a limit spring 9 is mounted on the movable end of the connection busbar 4, and a section of the movable conductor 2-3 for welding the movable contacts 2-4 is located in the insulation cylinder 2-5, and is welded at the lower end of the insulation cylinder 2-5.
  • the conductive seat 1 and the static plug 2-1-1 on the static conductor 2-1 form a three-position switch. Isolating the fracture, when the static plug 2-1-1 on the static conductor 2-1 is located between the conductive seat 1 and the grounding seat 5, forming a middle position of the three-position switch, that is, the isolation and the grounding position, A grounding break of the three-position switch is formed between the static plug 2-1-1 on the static conductor 2-1 and the grounding seat 5.
  • the vacuum interrupter 2 only undertakes the breaking current process, and the insulating gas bears the power frequency and the lightning impulse withstand voltage.
  • the first step is shown in Figure 1.
  • the circuit is in the on state, the vacuum interrupter 2 is in the position, and the conductive seat 1 is plugged into the static plug 2-1-1 on the static conductor 2-1 to realize the three-position switch. Isolation
  • the second step is shown in Fig. 3, the circuit is broken and the isolation is about to be separated.
  • the connection busbar 4 is rotated to the middle position, and the movable contact 2-4 is separated from the static contact 2-2 to realize circuit breaking.
  • the load side is not charged.
  • the three-position switch is in the state of isolation and is about to be separated, that is, the static plug 2-1-1 on the static conductor 2-1 and the conductive seat 1 are to be separated from each other;
  • the third step is shown in Figure 4.
  • the circuit is disconnected and the vacuum interrupter is self-closing.
  • the three-position switch is in the middle position, that is, the isolation and grounding positions.
  • the static plug on the static conductor 2-1 2-1-1 is completely separated from the conductive seat 1 to realize the isolation, and under the action of the return spring 8, the vacuum interrupter 2 is rotated toward the connecting busbar 4, and the vacuum interrupter 2 is in the function of the self-closing force.
  • Self-closing
  • the fourth step is as shown in Fig. 5, the circuit is broken and the vacuum interrupter has been reset.
  • the vacuum interrupter 2 is rotated to be parallel with the connecting busbar 4, that is, the vacuum interrupter 2 is reset, and the limit spring is 9 to ensure that the vacuum interrupter 2 will not overshoot when reset, and the return spring 8 will ensure that the vacuum interrupter 2 will not rebound after resetting;
  • the fifth step is shown in Fig. 6.
  • the circuit is disconnected and placed on the load side.
  • the static plug 2-1-1 on the static conductor 2-1 and the connection bus 4 are electrically connected to the grounding base 5 to realize load grounding. That is, the three-station switch is grounded, which not only realizes the main grounding with the external connection of the busbar 4, that is, the operator can be visually grounded, and the auxiliary grounding with the vacuum interrupter 2 as the internal ground is realized, and the omitted is omitted.
  • Both the grounding base 5 and the grounding base 5 are good electrical conductors.

Landscapes

  • Gas-Insulated Switchgears (AREA)

Abstract

一种采用连接母排实现负载侧外接地的三工位真空开关，克服了现有技术依靠真空灭弧室关合实现负载侧接地，操作人员无法直观看到接地情况容易产生误操作以及当操作机构机出现问题时需要外挂接地线，操作起来不方便，安全隐患大的问题，特征是在负载座的前后两侧铰接有连接母排，并将真空灭弧室与连接母排用销轴连接，连接母线与接地座电连接实现主接地，真空灭弧室与接地座电连接实现辅助接地，有益效果是主接地过程操作人员可以直观的看到，且结构简单，操作方便，安全可靠，并实现了仅由真空灭弧室承担开断过程，开断之后由真空灭弧室和绝缘气体共同承担工频和雷电冲击耐受电压，降低了NSDD现象产生的概率，提高了开关设备的运行安全性。

Description

一种采用连接母排实现负载侧外接地的三工位真空开关 技术领域
本发明属于开关设备技术领域，特别涉及一种采用连接母排实现负载侧外接地的三工位真空开关。
背景技术
现有的真空开关包括母线、真空灭弧室、负载导体、接地导体、三工位开关(隔离位、中间位和接地位)和操作机构，由操作机构带动真空灭弧室实现分合。
申请号为CN200710103519.2，对应的申请号为US20060360273的发明专利公开了一种提供电流中断、隔离和接地的三位置真空开关，该三位置真空开关包括线路母线、真空灭弧室、负载导体、接地导体和操作机构，所述真空灭弧室包括静导电体、动导电体和绝缘筒，其中静触头和动触头位于绝缘筒内，动触头可在与静触头电连接的闭合电路位置和与静触头分离的断开电路位置之间运动，负载导体电连接到动导电体，操作机构的结构为：(a)通过动触头与静触头接触和断开实现电路的关合和断开，以及(b)在其所述第一位置(即电路导通位置)和第二位置(即负载侧接地位置)之间移动真空灭弧室，其中在第一位置时该静导电体电连接到电路母线，在第二位置时该静导电体电连接到接地导体。结合其附图3D、3E、4D和4E可知，当将负载导体侧接地时，首先需要分断真空灭弧室，再旋转真空灭弧室至静导电体与接地导体接通，再将真空灭弧室合闸，才能实现负载侧接地，这样存在的问题是：负载接地过程由于真空灭弧室完全封闭，会导致操作人员无法直观看到接地情况而产生误操作，而且当操作机构机械或电气方面出现问题时，无法实现合闸接地，需要外挂接地线，操作起来麻烦不方便，安全隐患较大；而结合其附图6B和6C可知，同样是先分断真空灭弧室，再垂直向下运动真空灭弧室至静导电体与接地导体接通，再将真空灭弧室合闸，才能实现负载侧接地，存在着上述相同问题。这种方案在静导电体与接地导体接通后，真空灭弧室会在其再合闸时出现震动，为了保证真空灭弧室良好固定，不至于在其合闸时出现震动，需要外接保持装置，结构复杂，成本较高。
另外，传统的真空开关设备中，由于真空灭弧室不仅承担开断电流的功能，而且承担绝缘耐受电压的功能，导致易出现NSDD(非保持破坏性放电)现象，影响设备的安全性。
发明内容
本发明所要解决的问题是，克服现有技术存在的不足和缺陷，提供一种结构简单，成本低，安全性高，操作人员可以直观的看到负载侧接地过程，并可避免真空灭弧室分合闸时出 现震动的一种采用连接母排实现负载侧外接地的的三工位真空开关。
本发明采用的技术方案包括导电座、真空灭弧室、负载座、接地座和驱动轴，在负载座的前后两侧铰接有连接母排，所述连接母排一端与驱动轴固定连接，并将真空灭弧室的动导电体裸露于绝缘筒外侧一段的顶端与连接母排用销轴连接，在销轴与动导电体之间安装有复位弹簧，在连接母排的可动一端安装有限位弹簧。
所述旋转真空灭弧室及连接母排实现主线路开断以及三工位开关功能；连接母线与接地座电连接实现主接地，真空灭弧室与接地座电连接实现辅助接地。
当所述真空灭弧室的静导电体上的静插头位于所述导电座与接地座之间时形成三工位开关的中间位，即隔离分位与接地分位，所述静导电体上的静插头与接地座之间形成三工位开关的可视接地断口。
所述真空灭弧室与导电座分离实现隔离分位，在其自闭力作用下实现自合闸，并依靠复位弹簧及限位弹簧实现开断后复位。
所述真空灭弧室的开断和连接母排的旋转实现三工位开关功能均由一个驱动机构驱动。
所述真空灭弧室仅承担开断电流过程，而绝缘气体承担工频和雷电冲击耐受电压。
与现有技术相比，本发明的有益效果是：
(1)本发明通过旋转连接母排和真空灭弧室实现主母线的开断以及三工位开关功能，并采用连接母排实现负载侧的外接地，即主接地，这一过程操作人员可以直观的看到，且真空灭弧室的开断和连接母排的旋转实现三工位开关功能均由一个驱动机构驱动，结构简单，操作方便，比采用真空灭弧室合闸实现负载侧接地安全可靠。
(2)本发明还自带辅助接地，当连接母排与接地座接通时，真空灭弧室在自闭力的作用下会自动闭合，实现了辅助接地，而这一过程不像背景技术专利那样先静导电体接地后合闸真空灭弧室实现负载接地，安全可靠，操作方便。
(3)当操作机构出现机械或电气故障，导致无法接地时，本发明可以手动操作实现负载侧可靠接地。
(4)本发明桥接地开关对真空灭弧室有支撑固定作用，可以取消保持装置，使得结构简单，成本降低。
(5)本发明真空灭弧室仅承担开断过程，开断之后由真空灭弧室和绝缘气体共同承担工频和雷电冲击耐受电压，大大降低出现NSDD(非保持破坏性放电)现象的概率。
附图说明
图1是本发明电路导通结构示意图，
图2是图1的俯视图，
图3是本发明电路分断且隔离合即将分开位置示意图，
图4是本发明电路分断且真空灭弧室自合闸示意图，
图5是本发明电路分断且真空灭弧室已复位示意图，
图6是本发明电路分断且处于负载侧接地示意图。
图中：
1.导电座，
2.真空灭弧室，
2-1.静导电体，2-1-1.静插头，2-2.静触头，
2-3.动导电体，2-4.动触头，
2-5.绝缘筒，2-6.静端盖，
2-7.动端盖，2-8.波纹管，
3.负载座，4.连接母排，5.接地座，6.驱动轴，
7.销轴，8.复位弹簧，9.限位弹簧。
具体实施方式
下面结合附图说明本发明的具体实施方式。
如图1和图2所示，本发明包括导电座1、真空灭弧室2、负载座3和接地座5，在负载座3的前后两侧铰接有连接母排4，连接母排4一端与驱动轴6固定连接，连接母排4可以在操作机构的作用下以驱动轴6为圆心旋转，所述真空灭弧室2由动导电体2-3、动触头2-4、静导电体2-1、静触头2-2、绝缘筒2-5、静端盖2-6、动端盖2-7和波纹管2-8组成，所述动导电体2-3与动触头2-4焊接成一体，动导电体2-3的一部分裸露于绝缘筒2-5外侧，并将动导电体2-3裸露于绝缘筒2-5外侧一段的顶端与连接母排4通过销轴7连接，并在销轴7与动导电体2-3之间安装有复位弹簧8，复位弹簧8一端连接在销轴7上，另一端压接在动导电体2-3上，同时在连接母排4的可动一端安装有限位弹簧9，所述动导电体2-3焊接动触头2-4的一段位于绝缘筒2-5内，在绝缘筒2-5下端部焊接动端盖2-7，同时在动端盖2-7与动导电体2-3之间焊接波纹管2-8，形成密封结构，所述静导电体2-1与静触头2-2焊接成一体，且静导电体2-1的一部分裸露于绝缘筒2-5外侧，在静导电体2-1裸露于绝缘筒2-5外侧一段的顶端加工有静插头2-1-1，静导电体2-1焊接静触头2-2的一段位于密封的绝缘筒2-5内，在绝缘筒2-5上端部焊接静端盖2-6，静导电体2-1焊接在静端盖2-6中心孔内，形成密封结构，使用时真空灭弧室2内为真空状态，动触头2-4可以在绝缘筒2-5内作直线运动，从而实现电路的开断和导通。
如图5所示，所述导电座1与静导电体2-1上的静插头2-1-1之间形成三工位开关的 隔离断口，当静导电体2-1上的静插头2-1-1位于导电座1与接地座5之间时形成三工位开关的中间位，即隔离分位与接地分位，所述静导电体2-1上的静插头2-1-1与接地座5之间形成三工位开关的接地断口。
所述真空灭弧室2仅承担开断电流过程，而绝缘气体承担工频和雷电冲击耐受电压。
使用过程如下：
第一步如图1所示为电路导通状态，真空灭弧室2处于合位，导电座1与静导电体2-1上的静插头2-1-1插接，实现三工位开关隔离合；
第二步如图3所示为电路分断且隔离合即将分开状态，此时连接母排4旋转将至中间位，动触头2-4与静触头2-2分开，实现电路开断，负载侧不带电，此时三工位开关处于隔离合即将分开状态，即静导电体2-1上的静插头2-1-1与导电座1将要脱扣分开；
第三步如图4所示为电路分断且真空灭弧室自合闸状态，三工位开关处于中间位，即隔离分位与接地分位，此时静导电体2-1上的静插头2-1-1与导电座1彻底分开，实现隔离分，并在复位弹簧8的作用下，使真空灭弧室2向连接母排4转动，同时真空灭弧室2在自闭力的作用下实现自合闸；
第四步如图5所示为电路分断且真空灭弧室已复位状态，此时真空灭弧室2旋转至与连接母排4平行，即真空灭弧室2复位状态，并由限位弹簧9保证真空灭弧室2复位时不会过冲，以及复位弹簧8保证真空灭弧室2复位后不会反弹；
第五步如图6所示为电路分断且处于负载侧接地状态，此时静导电体2-1上的静插头2-1-1、连接母排4与接地座5电连接，实现负载接地，即三工位开关接地合位，不仅实现了以连接母排4为外接地的主接地，即操作人员可视接地，而且实现了以真空灭弧室2为内接地的辅助接地，省略了引用专利CN200710103519.2中的最后一步，即静导体接地后，再合闸真空灭弧室实现负载接地，因此本专利不仅有操作人员可视主接地，还有真空灭弧室自合闸的辅助接地，安全可靠，结构简单。
所述导电座1、静导电体2-1、静插头2-1-1、静触头2-2、动导电体2-3、动触头2-4、负载座3、连接母排4和接地座5均为良好导电体。

Claims (6)

  1. 一种采用连接母排实现负载侧外接地的三工位真空开关，包括导电座(1)、真空灭弧室(2)、负载座(3)、接地座(5)和驱动轴(6)，其特征在于，在负载座3的前后两侧铰接有连接母排(4)，所述连接母排(4)一端与驱动轴(6)固定连接，并将真空灭弧室(2)的动导电体(2-3)裸露于绝缘筒(2-5)外侧一段的顶端与连接母排(4)用销轴(7)连接，在销轴(7)与动导电体(2-3)之间安装有复位弹簧(8)，在连接母排(4)的可动一端安装有限位弹簧(9)。
  2. 根据权利要求1所述一种采用连接母排实现负载侧外接地的三工位真空开关，其特征在于，所述旋转真空灭弧室(2)及连接母排(4)实现主线路开断以及三工位开关功能；所述连接母线(4)与接地座(5)电连接实现主接地，所述真空灭弧室(2)与接地座(5)电连接实现辅助接地。
  3. 根据权利要求1所述一种采用连接母排实现负载侧外接地的三工位真空开关，其特征在于，当所述真空灭弧室(2)的静导电体(2-1)上的静插头(2-1-1)位于所述导电座(1)与接地座(5)之间时形成三工位开关的中间位，即隔离分位与接地分位，所述静导电体(2-1)上的静插头(2-1-1)与接地座(5)之间形成三工位开关的可视接地断口。
  4. 根据权利要求1所述一种采用连接母排实现负载侧外接地的三工位真空开关，其特征在于，所述真空灭弧室(2)与导电座(1)分离实现隔离分位，在其自闭力作用下实现自合闸，并依靠复位弹簧(8)及限位弹簧(9)实现开断后复位。
  5. 根据权利要求1所述一种采用连接母排实现负载侧外接地的三工位真空开关，其特征在于，所述真空灭弧室(2)的开断和连接母排(4)的旋转实现三工位开关功能均由一个驱动机构驱动。
  6. 根据权利要求3所述一种采用连接母排实现负载侧外接地的三工位真空开关，其特征在于，所述真空灭弧室(2)仅承担开断电流过程，而绝缘气体承担工频和雷电冲击耐受电压。
PCT/CN2015/089125 2014-11-12 2015-09-08 一种采用连接母排实现负载侧外接地的三工位真空开关 WO2016074525A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/510,240 US20170301491A1 (en) 2014-11-12 2015-09-08 Three-position vacuum switch for realizing external grounding of load side by using connected busbar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410632090.6A CN104319166B (zh) 2014-11-12 2014-11-12 一种采用连接母排实现负载侧外接地的三工位真空开关
CN201410632090.6 2014-11-12

Publications (1)

Publication Number Publication Date
WO2016074525A1 true WO2016074525A1 (zh) 2016-05-19

Family

ID=52374384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/089125 WO2016074525A1 (zh) 2014-11-12 2015-09-08 一种采用连接母排实现负载侧外接地的三工位真空开关

Country Status (3)

Country Link
US (1) US20170301491A1 (zh)
CN (1) CN104319166B (zh)
WO (1) WO2016074525A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319166B (zh) * 2014-11-12 2016-05-18 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关
EP3091551A1 (en) * 2015-05-06 2016-11-09 ABB Technology AG Combined discharging and grounding device for a high voltage power converter
CN105374610B (zh) * 2015-12-21 2017-11-24 华仪电气股份有限公司 一种隔离开关
CN109065406A (zh) * 2018-09-06 2018-12-21 天津合纵电力设备有限公司 一种带内置隔离断口的真空灭弧室组件及真空断路器
CN111681906B (zh) * 2020-03-13 2022-06-17 安德利集团有限公司 真空断路器
ES2888700B2 (es) * 2020-06-25 2022-05-18 Ormazabal Corporate Tech A I E Interruptor de corte en carga o de corrientes de cortocircuito
FR3123496A1 (fr) * 2021-05-25 2022-12-02 Schneider Electric Industries Sas Dispositif de coupure d’un appareil électrique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286725A (en) * 1994-02-18 1995-08-23 Brian Mckean Sequential isolating circuit breaker
CN2251195Y (zh) * 1996-03-22 1997-04-02 西安高压电器研究所 一种三工位真空负荷开关
CN2297794Y (zh) * 1996-10-16 1998-11-18 哈尔滨宏达高压电控制造有限公司 旋转式真空隔离负荷开关
CN1276614A (zh) * 1999-06-07 2000-12-13 高压技术佩特斯及蒂定股份有限公司 带真空灭弧室的中压刀片式负荷开关
CN101106034A (zh) * 2006-02-23 2008-01-16 伊顿公司 提供电流中断、隔离和接地的三位置真空断续器隔离开关
CN104319166A (zh) * 2014-11-12 2015-01-28 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关
CN204189700U (zh) * 2014-11-12 2015-03-04 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920941A (en) * 1972-08-10 1975-11-18 Westinghouse Electric Corp Contact-operating mechanism for breaking vacuum interrupter contact-welds by bending action of the movable contact rod
US3824359A (en) * 1972-10-06 1974-07-16 Mc Graw Edison Co Vacuum loadbreak switch
US20080217153A1 (en) * 2005-08-22 2008-09-11 Siemens Aktiengesellschaft Insulating Body For a Medium-Voltage Switchgear Assembly
CN2819437Y (zh) * 2005-09-20 2006-09-20 浙江华仪电力设备制造有限公司 隔离真空负荷开关
DE102007004950B4 (de) * 2006-03-09 2008-07-17 Switchcraft Europe Gmbh Elektrische Schaltanlage
FR2901055B1 (fr) * 2006-05-12 2008-07-04 Areva T & D Sa Disjoncteur sectionneur d'alternateur actionne par un servo-moteur
US7829814B2 (en) * 2007-09-26 2010-11-09 Eaton Corporation Vacuum circuit interrupter grounding assembly
FR2946180B1 (fr) * 2009-05-26 2012-12-14 Areva T & D Sa Dispositif d'accrochage et de verrouillage interne a un interrupteur ou a un disjoncteur.
JP4906892B2 (ja) * 2009-08-12 2012-03-28 株式会社日立製作所 スイッチギヤ
CN203553024U (zh) * 2013-09-27 2014-04-16 北京电研华源电力技术有限公司 一种三工位隔离开关固封极柱

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286725A (en) * 1994-02-18 1995-08-23 Brian Mckean Sequential isolating circuit breaker
CN2251195Y (zh) * 1996-03-22 1997-04-02 西安高压电器研究所 一种三工位真空负荷开关
CN2297794Y (zh) * 1996-10-16 1998-11-18 哈尔滨宏达高压电控制造有限公司 旋转式真空隔离负荷开关
CN1276614A (zh) * 1999-06-07 2000-12-13 高压技术佩特斯及蒂定股份有限公司 带真空灭弧室的中压刀片式负荷开关
CN101106034A (zh) * 2006-02-23 2008-01-16 伊顿公司 提供电流中断、隔离和接地的三位置真空断续器隔离开关
CN104319166A (zh) * 2014-11-12 2015-01-28 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关
CN204189700U (zh) * 2014-11-12 2015-03-04 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关

Also Published As

Publication number Publication date
CN104319166A (zh) 2015-01-28
US20170301491A1 (en) 2017-10-19
CN104319166B (zh) 2016-05-18

Similar Documents

Publication Publication Date Title
WO2016074525A1 (zh) 一种采用连接母排实现负载侧外接地的三工位真空开关
WO2016074524A1 (zh) 一种采用桥开关实现负载侧外接地的三工位真空开关
WO2018086456A1 (zh) 一种具有接地联动的双断口隔离开关
CN107831424B (zh) 一种用于gis间隔耐压试验测试装置
CN105702535B (zh) 一种漏电断路器
CN103050325B (zh) 固体绝缘开关设备的极柱组件
CN112466701B (zh) 一种双断口联动型三工位隔离接地开关结构
CN105680255B (zh) 一种具有电路保护功能的开关插座及插线板
US7986061B2 (en) Electrical switching device
CN203180517U (zh) 微机消弧消谐及过电压保护装置
CN203180518U (zh) 智能开关消弧及过电压保护装置
JP2019505085A (ja) 回転式ダブル・ブレーク・スイッチの接触システムの改良配線構造
CN110048335B (zh) 一种开关柜
CN211208317U (zh) 隔离真空断路器
CN204189700U (zh) 一种采用连接母排实现负载侧外接地的三工位真空开关
CN204189699U (zh) 一种采用桥开关实现负载侧外接地的三工位真空开关
CN209150033U (zh) 一种变阻触头机构以及防电弧断路器
CN202797738U (zh) 固体绝缘真空环网柜
CN201345319Y (zh) 环形旋转极柱式真空开关
CN207264963U (zh) 接地开关及使用该接地开关的开关柜
WO2020124299A1 (zh) 一种三相联动的隔离开关
CN101770892B (zh) 环形旋转极柱式真空开关
CN203119374U (zh) 小型化分体式固体绝缘环网柜
CN204332806U (zh) 绝缘极柱
CN204834487U (zh) 有可见断口旋转隔离开关型真空开关

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15858412

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15510240

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15858412

Country of ref document: EP

Kind code of ref document: A1