WO2016074524A1 - 一种采用桥开关实现负载侧外接地的三工位真空开关 - Google Patents

一种采用桥开关实现负载侧外接地的三工位真空开关 Download PDF

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Publication number
WO2016074524A1
WO2016074524A1 PCT/CN2015/089124 CN2015089124W WO2016074524A1 WO 2016074524 A1 WO2016074524 A1 WO 2016074524A1 CN 2015089124 W CN2015089124 W CN 2015089124W WO 2016074524 A1 WO2016074524 A1 WO 2016074524A1
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Prior art keywords
grounding
switch
bridge
contact
conductor
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PCT/CN2015/089124
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English (en)
French (fr)
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张交锁
陈涛
国世峥
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沈阳华德海泰电器有限公司
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Priority to US15/510,237 priority Critical patent/US20170287661A1/en
Publication of WO2016074524A1 publication Critical patent/WO2016074524A1/zh

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    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
    • 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
    • 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
    • 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
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • 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
    • 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
    • H01H33/6664—Operating arrangements with pivoting movable contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • 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
    • 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

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 using a bridge switch.
  • 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 causes the operator to visually see the grounding condition and cause misoperation, and when the operating mechanism is mechanically or electrically
  • the vacuum interrupting chamber is first broken, and the vacuum is moved vertically downward.
  • the same problem can be solved by connecting the arc extinguishing chamber 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 a bridge switch to achieve external grounding on the load side.
  • the technical scheme adopted by the invention comprises a line busbar, a vacuum interrupter, an operating mechanism and a load busbar, the operating mechanism drives the vacuum interrupter to break the line busbar, and the vacuum interrupter rotates to realize the closing and disconnection of the circuit.
  • the load side is grounded, and a bridge grounding switch is disposed on the other side of the three-station vacuum switch composed of the line bus, the vacuum interrupter, the operating mechanism and the load bus, and the load bus is visually grounded through the bridge grounding switch.
  • the bridge grounding switch is composed of a grounding static conductor and a rotating grounding bridge arm, and a grounding static contact is arranged on the grounding static conductor, and a bridge arm contact is welded on the rotating grounding arm.
  • the bridge grounding switch is composed of a grounding static conductor and a linear grounding bridge arm, and a grounding static contact is arranged on the grounding static conductor, and a bridge arm contact is welded on the linear grounding arm.
  • the linear grounding bridge arm of the bridge grounding switch is driven by the bridge grounding switch driving mechanism to linearly travel to the bridge arm contact on the linear grounding bridge arm and the dynamic electric conductor on the movable electric conductor with the driving point of the bridge grounding switch as a driving point.
  • Contact contact visible external grounding on the load bus side.
  • the vacuum interrupter only undertakes the breaking process, and the vacuum interrupter and the insulating gas jointly bear the power frequency and the lightning impulse withstand voltage after the breaking.
  • the rotating ground bridge arm is composed of two linear bridge arms that are perpendicular to each other and integrated.
  • the invention adopts the vacuum interrupter to realize the breaking of the main bus and the rotary vacuum interrupter to realize the three-station switch function, and adopts the bridge grounding switch to realize the external grounding on the load side, thereby realizing the visual grounding of the operator.
  • Overcoming the prior art relies on the vacuum interrupter closing to achieve the load side grounding, because the vacuum interrupter is completely closed, the operator can not directly see the grounding situation and cause misoperation, and the structure is simple, the operation is convenient, compared with the adoption The vacuum interrupter is safe and reliable.
  • the grounding switch can be manually operated to achieve reliable grounding on the load side.
  • 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, and the vacuum interrupter and the insulating gas jointly bear the power frequency and the lightning impulse withstand voltage after the breaking, thereby greatly reducing the occurrence of NSDD (non-maintaining destructive discharge) phenomenon. Probability.
  • FIG. 1 is a schematic view showing a line conduction structure of the present invention
  • Figure 2 is a plan view of Figure 1
  • Figure 5 is a schematic view showing the line breaking and being in the grounding position of the present invention.
  • FIG. 6 is a schematic diagram of the line breaking, grounding, and load grounding of the present invention.
  • FIG. 7 is a schematic diagram of line breaking, grounding, and load grounding according to another embodiment of the present invention.
  • the present invention comprises a line bus 1, a vacuum interrupter 2, an operating mechanism 3 and a load bus 5, and a line contact 1-1 is arranged on the line bus 1, and the vacuum interrupter 2 is provided.
  • the tube 2-8 is composed of a static conductor 2-1, and the movable conductor 2-3 is welded to the movable contact 2-4, and the movable conductor 2 is A part of -3 is exposed outside the insulating cylinder 2-5, and the movable conductor contact 2-3-1 is soldered to the top end of the movable conductor 2-3 exposed to the outer side of the insulating cylinder 2-5, and the movable conductor 2-3 A section of the welding moving contact 2-4 is located in the insulating cylinder 2-5, and the movable end
  • the body 2-1 is exposed on the outer side of the outer portion of the insulating cylinder 2-5, and the static conductor contact 2-1-1 is welded, and the static conductor 2-1 is welded to the static contact 2-2.
  • One section is located in the sealed insulating cylinder 2-5, and the static end cover 2-6 is welded to the upper end of the insulating cylinder 2-5, and the static electric conductor 2-1 is welded in the central hole of the static end cover 2-6 to form a sealing structure.
  • the movable conductor 2-3 drives the movable contact 2-4 to linearly move in the insulation barrel 2-5, thereby realizing the breaking and conduction of the line, in the line
  • the other side of the three-station vacuum switch composed of the bus bar 1, the vacuum interrupter 2, the operating mechanism 3 and the load bus bar 5 is provided with a bridge earthing switch 4, which is grounded by the grounding conductor 4-1 and rotated
  • the grounding bridge arm 4-2a is formed, and the grounding static conductor 4-1 is provided with a grounding static contact 4-1-1, and the rotating grounding bridge arm 4-2a is composed of two linear bridge arms which are perpendicular to each other and integrated.
  • a bridge arm contact 4-2-1 is welded on the rotating ground bridge arm 4-2a, and a bridge grounding switch driving point 6 is disposed between the grounding static conductor 4-1 and the rotating grounding bridge arm 4-2a;
  • an isolation barrier of the three-position switch is formed between the line contact 1-1 on the line bus 1 and the static conductor contact 2-1-1 on the static conductor 2-1.
  • the static conductor contact 2-1-1 on the static conductor 2-1 is located between the line contact 1-1 on the line bus 1 and the ground static contact 4-1-1 on the grounded conductor 4-1
  • the middle position of the three-position switch is formed, that is, the isolation and the grounding position, the static conductor contact 2-1-1 on the static conductor 2-1 and the ground static conductor 4-1 are grounded.
  • the static conductor contact 2-1-1 on the static conductor 2-1 is in contact with the ground static contact 4-1-1 on the grounded conductor 4-1 to realize three stations.
  • the grounding of the switch is combined, and the grounded static contact 4-1-1 on the grounded static conductor 4-1 has a fixed effect on the vacuum interrupter 2;
  • the rotating grounding bridge arm 4-2a of the bridge grounding switch 4 is rotated by the bridge grounding switch driving mechanism around the bridge grounding switch driving point 6 to the bridge arm of the rotating grounding bridge arm 4-2a.
  • the point 4-2-1 is in contact with the movable conductor contact 2-3-1 on the movable conductor 2-3, so that the external side of the load bus 5 is visually grounded.
  • the vacuum interrupter 2 only undertakes the breaking process, and the vacuum interrupter 2 and the insulating gas jointly bear the power frequency and the lightning impulse withstand voltage after the breaking.
  • the first step is shown in Figure 1.
  • the line is in the on state, the vacuum interrupter 2 is in the position, the line contact 1-1 on the line bus 1 and the static conductor contact 2 on the static conductor 2-1. 1-1 contact, to achieve three-position switch isolation and joint;
  • the second step is shown in Fig. 3 as the line breaking state.
  • the operating mechanism 3 drives the movable electric conductor 2-3 to move, and the vacuum interrupter 2 is opened, so that the line is disconnected, the load bus 5 side is not charged, and the three-position switch Still in isolation;
  • the third step is shown in Figure 4 as the line breaking state.
  • the operating mechanism 3 drives the vacuum interrupter 2 to rotate to the middle position.
  • the vacuum interrupter 2 is still in the position, and the line contact 1 on the line bus 1 is -1 is separated from the static conductor contact 2-1-1 on the static conductor 2-1 to realize the three-position switch isolation division, that is, the middle position, and also the ground division, forming an obvious fracture and improving safety;
  • the fourth step is shown in FIG. 5 as the line breaking state, and the operating mechanism 3 continues to drive the vacuum interrupter 2 to rotate to the static conductor contact 2-1-1 and the grounding static conductor 4- on the static conductor 2-1.
  • the grounding static contact 4-1-1 on 1 contacts the grounding position of the three-position switch, and the grounded static contact 4-1-1 on the grounded static conductor 4-1 has a fixed effect on the vacuum interrupter 2. ;
  • the fifth step is shown in Figure 6 as the line breaking state.
  • the vacuum interrupter 2 is in the position, the three-position switch is in the grounding position, and the rotating grounding arm 4-2a of the bridge earthing switch 4 is in the bridge grounding switch.
  • the driving mechanism is driven to rotate around the bridge grounding switch driving point 6 to the bridge arm contact 4-2-1 on the rotating ground bridge arm 4-2a and the movable conductor contact 2-3- on the movable conductor 2-3. 1 contact, realize the external grounding of the load busbar 5 side.
  • the rotating grounding bridge arm 4-2a is outside the vacuum interrupter 2, which can be closed or opened by the operator, which makes the device more convenient to operate and has a higher safety factor.
  • the grounded static contact 4-1-1 on the grounded static conductor 4-1 has a fixed effect on the vacuum interrupter 2, so that the vibration is not generated when the vacuum interrupter 2 needs to be closed and closed.
  • the invention is safer and more reliable, and has a simple structure.
  • FIG. 7 shows the same as Embodiment 1 except that the bridge grounding switch 4 is composed of a grounded static conductor 4-1 and a linear grounding bridge arm 4-2b, and a welded bridge is formed on the linear grounding bridge arm 4-2b.
  • Arm contact 4-2-1 Figure 7 shows the line breaking state, when the vacuum interrupter 2 is in the position, the three-position switch is in the isolated position, that is, the middle position, the bridge grounding switch 4 is directly grounded.
  • the bridge arm 4-2b is linearly driven by the bridge grounding switch driving mechanism with the bridge grounding switch driving point 6 as a driving point to the bridge arm contact 4-2-1 and the movable conductor 2 on the linear grounding bridge arm 4-2b.
  • the movable conductor contact 2-3-1 on the -3 contacts, and the external side of the load bus 5 is grounded.
  • the linear ground bridge 4-2b is outside the vacuum interrupter 2, and the operator can close or open the switch.
  • the device is more convenient to operate and has a higher safety factor.
  • the grounded static contact 4-1-1 on the grounded static conductor 4-1 has a fixed effect on the vacuum interrupter 2, so it is required in the vacuum interrupter 2 There is no vibration phenomenon when the switch is closed, which makes the invention safer and more reliable, and has a simple structure.
  • the bridge grounding switch 4 and the load busbar 5 are both good electrical conductors.

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  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

一种采用桥开关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，安全隐患大和结构复杂，成本较高的问题，特征是在三工位真空开关的另一侧设有桥接地开关，通过桥接地开关实现负载侧的外接地，有益效果是，实现了操作人员可视接地，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(非保持破坏性放电)现象产生的概率，提高了开关设备的运行安全性。

Description

一种采用桥开关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，特别涉及一种采用桥开关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，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 现震动的一种采用桥开关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线路母线、真空灭弧室、操动机构和负载母线，操动机构带动真空灭弧室实现线路母线的开断，真空灭弧室旋转实现电路的关合、断开以及负载侧接地，在所述线路母线、真空灭弧室、操作机构和负载母线组成的三工位真空开关的另一侧设有桥接地开关，通过桥接地开关实现负载母线可视接地。
所述桥接地开关由接地静导体和旋转接地桥臂组成，在接地静导体上设有接地静触点，在旋转接地桥臂上焊接有桥臂触点。
所述桥接地开关由接地静导体和直线接地桥臂组成，在接地静导体上设有接地静触点，在直线接地桥臂上焊接有桥臂触点。
当所述真空灭弧室的静导电体上的静导电体触点位于所述线路母线上的线路触点与接地静导体上的接地静触点之间时形成三工位开关的隔离分位与接地分位，所述静导电体上的静导电体触点与接地静导体上的接地静触点之间形成三工位开关的可视接地断口，所述静导电体上的静导电体触点与接地静导体上的接地静触点接触，实现三工位开关的接地合位，所述桥接地开关的旋转接地桥臂在桥接地开关驱动机构的带动下围绕桥接地开关驱动点旋转至旋转接地桥臂上的桥臂触点与动导电体上的动导电体触点接触，实现负载母线侧外可视接地。
所述桥接地开关的直线接地桥臂在桥接地开关驱动机构的带动下以桥接地开关驱动点为驱动点直线行进至直线接地桥臂上的桥臂触点与动导电体上的动导电体触点接触，实现负载母线侧外可视接地。
所述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。
所述旋转接地桥臂由相互垂直且为一体的两个直线桥臂构成。
与现有技术相比，本发明的有益效果是：
(1)本发明采用真空灭弧室分合实现主母线的开断以及旋转真空灭弧室实现三工位开关功能，并采用桥接地开关实现负载侧的外接地，实现了操作人员可视接地，克服了现有技术依靠真空灭弧室关合实现负载侧接地，由于真空灭弧室完全封闭导致操作人员无法直观看到接地情况而产生误操作的问题，且结构简单，操作方便，比采用真空灭弧室合闸接地安全可靠。
(2)当操动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桥接地开关实现负载侧可靠接地。
(3)由于本发明接地静导体上的接地静触点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。
(4)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是本发明线路导通结构示意图，
图2是图1的俯视图，
图3是本发明线路分断且处于隔离合位示意图，
图4是本发明线路分断且处于中间位(隔离分位、接地分位)示意图，
图5是本发明线路分断且处于接地合位示意图，
图6是本发明线路分断、接地合位且处于负载接地示意图，
图7是本发明另一具体实施方式的线路分断、接地分位且处于负载接地示意图。
图中：
1.线路母线，    1-1.线路触点，
2.真空灭弧室，
2-1.静导电体，  2-1-1.静导电体触点，
2-2.静触头，
2-3.动导电体，  2-3-1.动导电体触点，
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.操作机构，
4.桥接地开关，
4-1.接地静导体，4-1-1.接地静触点，
4-2a.旋转接地桥臂，
4-2b.直线接地桥臂，
4-2-1.桥臂触点，
5.负载母线，
6.桥接地开关驱动点。
具体实施方式
下面结合附图说明本发明的具体实施方式。
具体实施方式1
如图1和图2所示，本发明包括线路母线1、真空灭弧室2、操作机构3和负载母线5，线路母线1上设有线路触点1-1，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，静导电体2-1上设有静导电体触点2-1-1，所述动导电体2-3与动触头2-4焊接为一体，且动导电体2-3的一部分裸露于绝缘筒2-5外侧，在动导电体2-3裸露于绝缘筒2-5外侧一段的顶端焊接有动导电体触点2-3-1，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焊接为一体，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外侧一段的顶端焊接有静导电体触点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，使用时绝缘筒2-5内为真空状态，动导电体2-3带动动触头2-4可以在绝缘筒2-5内作直线运动，从而实现线路的开断和导通，在所述线路母线1、真空灭弧室2、操动机构3和负载母线5组成的三工位真空开关的另一侧设有桥接地开关4，所述桥接地开关4由接地静导体4-1和旋转接地桥臂4-2a组成，接地静导体4-1上设有接地静触点4-1-1，所述旋转接地桥臂4-2a由相互垂直且为一体的两个直线桥臂构成，在旋转接地桥臂4-2a上焊接有桥臂触点4-2-1，在接地静导体4-1和旋转接地桥臂4-2a之间设有桥接地开关驱动点6；
如图4所示，所述线路母线1上的线路触点1-1与静导电体2-1上的静导电体触点2-1-1之间形成三工位开关的隔离断口，当静导电体2-1上的静导电体触点2-1-1位于线路母线1上的线路触点1-1与接地静导体4-1上的接地静触点4-1-1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上的静导电体触点2-1-1与接地静导体4-1上的接地静触点4-1-1之间形成三工位开关的可视接地断口；
如图5所示，所述静导电体2-1上的静导电体触点2-1-1与接地静导体4-1上的接地静触点4-1-1接触，实现三工位开关的接地合位，同时接地静导体4-1上的接地静触点4-1-1对真空灭弧室2有固定作用；
如图6所示，所述桥接地开关4的旋转接地桥臂4-2a在桥接地开关驱动机构的带动下围绕桥接地开关驱动点6旋转至旋转接地桥臂4-2a上的桥臂触点4-2-1与动导电体2-3上的动导电体触点2-3-1接触，实现负载母线5侧外可视接地。
所述真空灭弧室2仅承担开断过程，开断之后由真空灭弧室2和绝缘气体共同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所示为线路导通状态，真空灭弧室2处于合位，线路母线1上的线路触点1-1与静导电体2-1上的静导电体触点2-1-1接触，实现三工位开关隔离合位；
第二步如图3所示为线路开断状态，操作机构3带动动导电体2-3运动，开断真空灭弧室2，使线路处于分断，负载母线5侧不带电，三工位开关仍处于隔离合位；
第三步如图4所示为线路开断状态，操作机构3带动真空灭弧室2旋转至中间位，此时真空灭弧室2仍处于分位，同时线路母线1上的线路触点1-1与静导电体2-1上的静导电体触点2-1-1分开，实现三工位开关隔离分位，即中间位，也是接地分位，形成明显断口，提高安全性；
第四步如图5所示为线路开断状态，操作机构3继续带动真空灭弧室2旋转至静导电体2-1上的静导电体触点2-1-1与接地静导体4-1上的接地静触点4-1-1接触，实现三工位开关接地合位，同时接地静导体4-1上的接地静触点4-1-1对真空灭弧室2有固定作用；
第五步如图6所示为线路开断状态，此时真空灭弧室2处于分位，三工位开关处于接地合位，桥接地开关4的旋转接地桥臂4-2a在桥接地开关驱动机构的带动下围绕桥接地开关驱动点6旋转至旋转接地桥臂4-2a上的桥臂触点4-2-1与动导电体2-3上的动导电体触点2-3-1接触，实现负载母线5侧外接地，此时旋转接地桥臂4-2a处于真空灭弧室2外侧，其关合或开断操作人员可视，使设备操作起来更加便利，安全系数较高，同时接地静导体4-1上的接地静触点4-1-1对真空灭弧室2有固定作用，所以在真空灭弧室2需要分合闸时也不会出现震动现象，使本发明更加安全可靠，且结构简单。
具体实施方式2
如图7所示，与具体实施方式1相同，区别在于，所述桥接地开关4由接地静导体4-1和直线接地桥臂4-2b组成，在直线接地桥臂4-2b上焊接桥臂触点4-2-1，图7所示为线路开断状态，此时真空灭弧室2处于分位，三工位开关处于隔离分位，即中间位，桥接地开关4的直线接地桥臂4-2b在桥接地开关驱动机构的带动下以桥接地开关驱动点6为驱动点直线行进至直线接地桥臂4-2b上的桥臂触点4-2-1与动导电体2-3上的动导电体触点2-3-1接触，实现负载母线5侧外接地，此时直线接地桥臂4-2b处于真空灭弧室2外侧，其关合或开断操作人员可视，使设备操作起来更加便利，安全系数较高，同时接地静导体4-1上的接地静触点4-1-1对真空灭弧室2有固定作用，所以在真空灭弧室2需要分合闸时也不会出现震动现象，使本发明更加安全可靠，且结构简单。
所述线路母线1、线路触点1-1、静导电体2-1、静导电体触点2-1-1、静触头2-2、动导电体2-3、动触头2-4、桥接地开关4和负载母线5均为良好导电体。

Claims (7)

  1. 一种采用桥开关实现负载侧外接地的三工位真空开关，包括线路母线(1)、真空灭弧室(2)、操动机构(3)和负载母线(5)，操动机构(3)带动真空灭弧室(2)实现线路母线(1)的开断，真空灭弧室(2)旋转实现电路的关合、断开以及负载侧接地，其特征在于，在所述线路母线(1)、真空灭弧室(2)、操动机构(3)和负载母线(5)组成的三工位真空开关的另一侧设有桥接地开关(4)，通过桥接地开关(4)实现负载母线(5)可视接地。
  2. 根据权利要求1所述一种采用桥开关实现负载侧外接地的三工位真空开关，其特征在于，所述桥接地开关(4)由接地静导体(4-1)和旋转接地桥臂(4-2a)组成，在接地静导体(4-1)上设有接地静触点(4-1-1)，在旋转接地桥臂(4-2a)上焊接有桥臂触点(4-2-1)。
  3. 根据权利要求1所述一种采用桥开关实现负载侧外接地的三工位真空开关，其特征在于，所述桥接地开关(4)由接地静导体(4-1)和直线接地桥臂(4-2b)组成，在接地静导体(4-1)上设有接地静触点(4-1-1)，在直线接地桥臂(4-2b)上焊接有桥臂触点(4-2-1)。
  4. 根据权利要求2所述一种采用桥开关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)上的静导电体触点(2-1-1)位于所述线路母线(1)上的线路触点(1-1)与接地静导体(4-1)上的接地静触点(4-1-1)之间时形成三工位开关的隔离分位与接地分位，所述静导电体(2-1)上的静导电体触点(2-1-1)与接地静导体(4-1)上的接地静触点(4-1-1)之间形成三工位开关的可视接地断口，所述静导电体(2-1)上的静导电体触点(2-1-1)与接地静导体(4-1)上的接地静触点(4-1-1)接触，实现三工位开关的接地合位，所述桥接地开关(4)的旋转接地桥臂(4-2a)在桥接地开关驱动机构的带动下围绕桥接地开关驱动点(6)旋转至旋转接地桥臂(4-2a)上的桥臂触点(4-2-1)与动导电体(2-3)上的动导电体触点(2-3-1)接触，实现负载母线(5)侧外可视接地。
  5. 根据权利要求3所述一种采用桥开关实现负载侧外接地的三工位真空开关，其特征在于，所述桥接地开关(4)的直线接地桥臂(4-2b)在桥接地开关驱动机构的带动下以桥接地开关驱动点(6)为驱动点直线行进至直线接地桥臂(4-2b)上的桥臂触点(4-2-1)与动导电体(2-3)上的动导电体触点(2-3-1)接触，实现负载母线(5)侧外可视接地。
  6. 根据权利要求4所述一种采用桥开关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)仅承担开断过程，开断之后由真空灭弧室(2)和绝缘气体共同承担工频和雷电冲击耐受电压。
  7. 根据权利要求2所述一种采用桥开关实现负载侧外接地的三工位真空开关，其特征在于，所述旋转接地桥臂(4-2a)由相互垂直且为一体的两个直线桥臂构成。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118352205A (zh) * 2024-06-17 2024-07-16 浙江正泰电气科技有限公司 断路器与隔离开关的组合结构及开关柜

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319165B (zh) * 2014-11-12 2016-05-25 沈阳华德海泰电器有限公司 一种采用桥开关实现负载侧外接地的三工位真空开关
CN105374610B (zh) * 2015-12-21 2017-11-24 华仪电气股份有限公司 一种隔离开关
DE102016217759A1 (de) * 2016-09-16 2018-03-22 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Schalten von Mittel- und Hochspannungen
CN108133862B (zh) * 2018-01-19 2024-03-26 西安交通大学 一种互锁真空开关及应用的串联补偿型限流装置及方法
ES2943936T3 (es) * 2019-03-29 2023-06-16 Siemens Ag Interruptor de tres posiciones optimizado
WO2020244729A1 (de) * 2019-06-03 2020-12-10 Siemens Aktiengesellschaft Schaltvorrichtung für eine freiluftschaltanlage
CN112038168B (zh) * 2020-09-17 2022-11-08 安徽普众机电有限公司 一种双灭弧室高压真空开关管
CN112582200B (zh) * 2020-11-09 2023-08-15 国网山东省电力公司曲阜市供电公司 防误操作单极接地刀闸
CN112509859B (zh) * 2020-12-10 2023-01-17 北京双杰电气股份有限公司 环保型负荷开关

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950612A1 (de) * 1979-12-15 1981-06-19 Fritz Driescher Spezialfabrik für Elektrizitätswerksbedarf, 5144 Wegberg Lasttrennschalter
CN1416586A (zh) * 2000-06-23 2003-05-07 西门子公司 具有两个触点副的真空开关管
JP2007179934A (ja) * 2005-12-28 2007-07-12 Hitachi Ltd 開閉装置
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
CN104319165A (zh) * 2014-11-12 2015-01-28 沈阳华德海泰电器有限公司 一种采用桥开关实现负载侧外接地的三工位真空开关
CN204189699U (zh) * 2014-11-12 2015-03-04 沈阳华德海泰电器有限公司 一种采用桥开关实现负载侧外接地的三工位真空开关

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19857170B4 (de) * 1998-12-11 2009-07-09 Abb Ag Schaltgerät
CN103474284B (zh) * 2013-09-24 2015-07-22 东盟电气集团浙江开关有限公司 一种三工位双接地负荷开关

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950612A1 (de) * 1979-12-15 1981-06-19 Fritz Driescher Spezialfabrik für Elektrizitätswerksbedarf, 5144 Wegberg Lasttrennschalter
CN1416586A (zh) * 2000-06-23 2003-05-07 西门子公司 具有两个触点副的真空开关管
JP2007179934A (ja) * 2005-12-28 2007-07-12 Hitachi Ltd 開閉装置
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
CN104319165A (zh) * 2014-11-12 2015-01-28 沈阳华德海泰电器有限公司 一种采用桥开关实现负载侧外接地的三工位真空开关
CN204189699U (zh) * 2014-11-12 2015-03-04 沈阳华德海泰电器有限公司 一种采用桥开关实现负载侧外接地的三工位真空开关

Cited By (1)

* Cited by examiner, † Cited by third party
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CN118352205A (zh) * 2024-06-17 2024-07-16 浙江正泰电气科技有限公司 断路器与隔离开关的组合结构及开关柜

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