WO2014026469A1 - 一种直流阀厅用接地开关及其接地导电杆机构 - Google Patents

一种直流阀厅用接地开关及其接地导电杆机构 Download PDF

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Publication number
WO2014026469A1
WO2014026469A1 PCT/CN2013/000957 CN2013000957W WO2014026469A1 WO 2014026469 A1 WO2014026469 A1 WO 2014026469A1 CN 2013000957 W CN2013000957 W CN 2013000957W WO 2014026469 A1 WO2014026469 A1 WO 2014026469A1
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WO
WIPO (PCT)
Prior art keywords
conductive rod
grounding
transmission
gear
balance
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2013/000957
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English (en)
French (fr)
Inventor
胡延涛
赵维全
尹天朔
王占杰
孙玉洲
王巧红
马永旭
夏立国
张任
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PING GAO GROUP CO Ltd
Henan Pinggao Electric Co Ltd
State Grid Corp of China SGCC
Original Assignee
PING GAO GROUP CO Ltd
Henan Pinggao Electric Co Ltd
State Grid Corp of China SGCC
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Application filed by PING GAO GROUP CO Ltd, Henan Pinggao Electric Co Ltd, State Grid Corp of China SGCC filed Critical PING GAO GROUP CO Ltd
Publication of WO2014026469A1 publication Critical patent/WO2014026469A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • 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
    • 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
    • H01H33/42—Driving mechanisms

Definitions

  • the present invention relates to the field of direct current power transmission and transformation equipment, and in particular, to a grounding switch for a DC wide room.
  • the direct current transmission has the advantages of long transmission distance, good regulation performance, low overvoltage level and low line loss. It is suitable for long-distance high-power transmission, interval power grid interconnection peaking, and sea cable transmission.
  • the existing DC valve hall grounding switch such as the "a ⁇ 400kv DC valve hall grounding switch" disclosed in the Chinese patent CN 202352576U, includes a support and a drive base mounted on the wall of the wide hall, and one end of the grounding conductive rod is hinged at On the support, the rotation axis of the grounding conductive rod extends in the left-right direction and can swing back and forth with respect to the valve hall wall, and the other end is provided with a movable contact, and the transmission base is equipped with a folding arm type transmission arm, and the transmission arm is away from the transmission base.
  • the grounding switch further comprises a vertical connecting rod fixedly connected with one end of the driving arm mounted on the driving base, and the vertical connecting rod is connected with an operating mechanism for driving the vertical connecting rod to rotate,
  • the drive arm is vertically disposed with the vertical link.
  • the operating mechanism rotates clockwise
  • the transmission arm rotates clockwise through the vertical link and the transmission base, and simultaneously extends straight, pushes the grounding conductive rod to rotate, and finally makes the grounding conductive rod
  • the moving contact is inserted into the static contact on the corresponding device to achieve closing; the opening process is reversed.
  • the existing grounding switch has the following problems: 1.
  • the object of the present invention is to provide a grounding conductive rod mechanism to solve the problem that the grounding conductive rod in the prior art cannot be smoothly closed and closed.
  • the object of the present invention is to provide a direct current using the above grounding conductive rod mechanism.
  • the valve hall uses a grounding switch.
  • the grounding conductive rod mechanism comprises a grounding conductive rod that can swing back and forth with respect to the corresponding valve wall and a transmission base for mounting on the wall surface of the corresponding valve hall, and one end of the grounding conductive rod is fixed with the rotation axis in the left and right direction a conductive rod rotating shaft extending and rotatably engaged with the transmission base, the grounding conductive rod mechanism further comprising: a driving connection with the conductive rod through a balance transmission mechanism to apply a torque that overcomes a weight moment of the grounding conductive rod itself Weight structure.
  • the balance transmission mechanism includes a driving gear that is coaxially fixed with the rotating shaft of the conductive rod, and the balancing transmission mechanism further includes a rotating base disposed on the transmission base and coupled with the driving gear The balance gear of the meshing transmission is disposed on the rotating shaft of the balance gear.
  • the weight structure includes a balance arm whose first end is fixedly disposed with a rotating shaft of the balance gear, and a balance arm extending in a radial direction of the balance gear away from the balance gear, and the weight structure Also included is a weight placed at the end of the balance arm.
  • the driving gear is a bevel gear
  • the balance gear is a bevel gear whose rotation axis intersects perpendicularly with the rotation axis of the driving gear, and the rotation axis of the balance gear extends in the front-rear direction.
  • the utility model relates to a grounding switch for a DC wide hall, comprising a grounding conductive rod mechanism and a driving device, wherein the grounding conductive rod mechanism comprises a grounding conductive rod which can swing back and forth with respect to the corresponding valve hall wall surface and a transmission base for mounting on the wall surface of the corresponding valve hall
  • the grounding conductive rod mechanism comprises a grounding conductive rod which can swing back and forth with respect to the corresponding valve hall wall surface and a transmission base for mounting on the wall surface of the corresponding valve hall
  • One end of the grounding conductive rod is fixed with a rotating rod shaft extending in the left-right direction and rotatingly engaged with the driving base, and the driving device is drivingly connected with the grounding conductive rod to drive the grounding
  • the conductive rod swings back and forth, and the grounding conductive rod mechanism further includes a weight structure that is coupled to the conductive rod through a balance transmission mechanism to apply a moment that overcomes the weight of the grounded conductive rod itself.
  • the driving device includes an operating mechanism and a conductive rod transmission mechanism
  • the conductive rod transmission mechanism includes a gear box for a corresponding glove wall surface disposed under the transmission base, and an input of the gear box
  • the end of the gearbox is connected to the output end of the operating mechanism, the output end of the gearbox is provided with a second transmission shaft extending in the left-right direction of the rotation axis, and the extension direction of the second transmission shaft is fixed with the second transmission a first link having a shaft axially uniform
  • the conductive rod transmission mechanism further comprising a third link fixed to an end of the grounding conductive rod adjacent to the transmission base, the third link and the third link
  • the grounding conductive rod constitutes a cranking structure with the rotating shaft of the conductive rod as a rotating shaft
  • the conductive rod transmission mechanism further includes a second connecting rod connected between the first connecting rod and the third connecting rod, the Two ends of the two links are hingedly connected to the first link and the third link, respectively.
  • the input end of the gear box is provided with a first transmission shaft extending in the up and down direction, and the first transmission shaft and the second transmission shaft are drivingly connected through a bevel gear transmission mechanism, and the operation is performed.
  • the mechanism includes for mounting on the gear A torque output member on a corresponding valve hall wall below the tank, the torque output member having a torque output shaft coaxial with the first drive shaft and directly or indirectly coupled to the first drive shaft.
  • a vertical link is coaxially fixed on the torque output shaft of the torque output member, and one end of the vertical link away from the torque output shaft is fixedly disposed with the first transmission shaft of the gear box.
  • the balance transmission mechanism includes a driving gear that is coaxially fixed to the rotating shaft of the conductive rod, and the balancing transmission mechanism further includes a rotating base disposed on the transmission base and coupled with the driving gear The balance gear of the meshing transmission is disposed on the rotating shaft of the balance gear.
  • the driving gear is a bevel gear
  • the balance gear is a bevel gear whose rotation axis intersects perpendicularly with the rotation axis of the driving gear, and the rotation axis of the balance gear extends in the front-rear direction.
  • the beneficial effects of the present invention are as follows:
  • the weight of the grounding conductive rod itself is balanced by the weight of the balance structure, and the grounding conductive rod itself does not need to be overcome during the process of driving the grounding conductive rod to swing and complete the opening and closing.
  • the heavy torque so that the operating force required to ground and close the conductive rod is reduced, so that the grounding and closing process of the grounding conductive rod is smooth and reliable, and the service life of the grounding conductive rod is ensured.
  • both the driving gear and the balance gear adopt a bevel gear structure, so that the rotation axis of the balance gear is perpendicular to the corresponding valve wall, so that the balance arm and the balance block can be parallel to the valve wall.
  • the swinging process does not affect the swinging process of the grounding conductive rod at all, and also reduces the span of the transmission base in the front-rear direction, saving space in the valve hall interior;
  • the movement path of the arm and the weight is parallel to the valve wall, so the swing of the balance structure does not increase the air clearance in the valve hall, and has less influence on the electric field of the equipment in the hall.
  • FIG. 1 is a schematic structural view of an embodiment of a grounding switch for a DC valve hall according to the present invention, and is also a use state diagram of an embodiment of a grounding conductive rod mechanism in the present invention;
  • Figure 2 is a side view of Figure 1;
  • Figure 3 is a plan view of Figure 1;
  • Figure 4 is an enlarged view of A in Figure 1;
  • Figure 5 is an enlarged view of B in Figure 2.
  • FIGS. 1 ⁇ 5 An embodiment of a DC switch valve grounding switch is shown in FIGS. 1 ⁇ 5: comprising a grounding conductive rod mechanism and a driving device, the grounding conductive rod mechanism comprising a grounding conductive rod 6 and for mounting on a corresponding valve hall wall surface 20
  • the grounding conductive rod mechanism comprising a grounding conductive rod 6 and for mounting on a corresponding valve hall wall surface 20
  • the grounding conductive rod 6 is used for mounting the corresponding moving contact 13, and the other end is fixed with a conductive rod that is rotatably engaged with the transmission base 2.
  • the balance transmission mechanism includes a driving gear 15 coaxially fixed on the rotating shaft of the conductive rod.
  • the driving gear 15 is a bevel gear.
  • the balancing transmission mechanism further includes a balance gear 16 that is rotatably disposed on the transmission base 2.
  • the balance gear 16 is a
  • the driving gear 15 meshes with a bevel gear that is driven and has a rotation axis extending in the front-rear direction.
  • a balance structure with a weight 1 is disposed on the rotating shaft of the balance gear 16, and the balance structure includes a balance in which the head end and the balance gear 16 are fixedly disposed, and the end extends in the radial direction of the balance gear 16 away from the rotation axis of the balance gear 16.
  • the arm 12, the weight 1 is disposed at the end of the balance arm 12.
  • the driving device comprises an operating mechanism and a conductive rod transmission mechanism driven to the grounding conductive rod 6, the conductive rod transmission mechanism comprising a gear box 4 for being disposed on the corresponding valve hall wall surface 20 below the transmission base 2, the gear
  • the input end of the box 4 is provided with a first transmission shaft for driving connection with the operating mechanism
  • the output end of the gear box 4 is provided with a second transmission shaft 10 whose rotation axis extends in the left-right direction, and the rotation axis of the first transmission shaft is up and down The direction is set, and the first and second transmission shafts are driven by a bevel gear transmission mechanism.
  • the operating mechanism includes a torque output member 7 for mounting on the valve wall 20 below the gearbox 4, the torque output member 7 having a torque output shaft disposed coaxially with the first drive shaft, the torque output shaft and the first
  • the drive shafts are connected by a vertical link 5 for transmission.
  • the second transmission shaft 10 is fixed with a first connecting rod 11 extending in the radial direction of the second transmission shaft 10, and the conductive rod transmission mechanism further includes a third portion fixed to the end of the grounding conductive rod 6 near the transmission base 2.
  • the connecting rod 14, the third connecting rod 14 and the grounding conductive rod 6 form an arm structure with the rotating shaft of the conductive rod as a rotating shaft, and the first connecting rod 11 and the third connecting rod 14 are drivingly connected by the second connecting rod 3, the second connecting rod Both ends of the 3 are hingedly connected to the first link 11 and the third link 14, respectively.
  • the part 8 represents the equalizing ring, and the equalizing ring is installed in each protruding part of the grounding switch, and the function thereof is to reduce the radio interference to meet the electric field requirement of the equipment in the valve hall; and install the shielding ring at the opening position of the grounding switch, so that The air static distance in the valve hall can be minimized.
  • the member 9 indicates a static contact mounted on the corresponding device
  • the static contact 9 is a ring contact
  • the guide cover is mounted on the outside, so that even if a small deviation occurs in the grounding conductive rod 6, the movable contact 13 can still be normally closed.
  • the static contact 9 can be easily and flexibly mounted on various devices that need to be grounded, such as a converter sleeve, a neutral mother, a smoothing reactor sleeve, etc., in a wide hall.
  • the grounding switch is installed on the pole line side of the valve hall for grounding of the high-voltage electrical equipment on the pole line side.
  • the grounding switch can be installed according to different needs, such as the court commutating Y winding side, the valve chamber commutating D winding valve side or the neutral mother side, to meet the need Ground the device to ground.
  • the dotted grounding conductor bar in Figure 2 indicates that it is in the closed state.
  • the torque output member 7 When closing, the torque output member 7 outputs torque, the second transmission shaft is rotated by the first transmission shaft, the first link 11 swings with the rotation of the second transmission shaft, and the second link 3 drives the third connection.
  • the arm structure formed by the rod 14 and the grounding conductive rod 6 Rotating around the rotating shaft of the conductive rod, so that the grounding conductive rod 6 completes the closing process; when opening, the torque output member 7 only needs to output the torque in the reverse direction.
  • the first connecting rod 11, the second connecting rod 3, the third connecting rod 14 and the grounding conductive rod 6 constitute a space four-bar linkage mechanism, and the vertical connecting rod 5 can be divided by the action of the gear box 4 and the space four-link
  • the grounding conductive rods 6 in the gate state are arranged in parallel, which allows the transmission base 2, the gear box 4 and the torque output member 7 to be arranged in a line (up and down direction), which greatly reduces the three components in the valve hall.
  • the reduction and the closing and closing process of the grounding switch are smooth and reliable; the driving gear 15 and the balance gear 16 are both bevel gears, which makes the trajectory of the weight 1 can be parallel to the valve wall 20, on the one hand, the reduction
  • the grounding switch occupies the space of the valve hall. On the other hand, when the weight 1 is in motion, the air static distance in the valve hall is not increased, and the electric field of the equipment in the valve hall is less affected.
  • the driving gear and the balance gear may also be spur gears; the gear box, the first, second, and third links in the driving device may also be omitted.
  • a folding arm type transmission arm can be arranged on the torque output shaft of the torque output member, and one end of the folding transmission arm away from the torque output member is hingedly connected with the middle portion of the grounding conductive rod; of course, the weight of the balance structure can also be It is directly disposed on the rotating shaft of the balance gear; the balance transmission mechanism can also be a belt transmission mechanism or a chain transmission mechanism.
  • grounding conductive rod mechanism is as shown in FIGS. 1 to 5:
  • the specific structure of the grounding conductive rod mechanism is the grounding conductive rod mechanism described in the above embodiment of the grounding switch for the DC wide room, and will not be described in detail herein.

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  • Mechanically-Actuated Valves (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

本发明涉及一种直流阀厅用接地开关及其接地导电杆机构，接地导电杆机构，包括相对相应阀厅墙面可前后摆动的接地导电杆和用于安装在相应阀厅墙面上的传动基座，所述接地导电杆的一端固设有转动轴线沿左右方向延伸并与所述传动基座转动配合的导电杆转轴，所述的接地导电杆机构还包括通过平衡传动机构与所述导电杆转轴传动连接以施加克服所述接地导电杆自身重力矩的力矩的配重结构。本发明解决了现有技术中的接地导电杆不能平稳分合闸的问题。

Description

一种直流阀厅用接地开关及其接地导电杆机构 技术领域
[0001] 本发明涉及直流输变电设备领域， 尤其涉及一种直流阔厅用接地开关。
背景技术
[0002] 随着我国经济持续快速发展， 电力消耗保持高速增长， 为了满足未来国民经济的发 展， 必将加大发展超高压及特高压直流输电的建设。 直流输电具有输电距离远， 调节性能 好、 过电压水平低、 线路损耗小等优点， 适用于远距离大功率输电、 区间电网互联调峰、 海 缆输电等场合。
[0003] 作为直流输电的关键设备， 安装换流阀的阀厅内设备的安全保障至关重要， 阀厅内 接地开关时高压直流输电工程的重要组成部分， 是阀厅内其它直流输电设备进行检修的安全 保障， 是特高压换流站直流场设计布置的关键设备之一。 而阀厅内的开关设备， 由于阀厅内 的面积限制， 对于开关设备必须尽量减少其占地面积， 因此对于阀厅内的接地开关不能使用 一般的接地开关结构形式。 现有的直流阀厅用接地开关如中国专利 CN 202352576U 公开的 "一种 ± 400kv 直流阀厅接地开关"， 包括装于阔厅墙壁上的支座和传动基座， 接地导电杆 的一端铰接在支座上， 接地导电杆的转动轴线沿左右方向延伸并可相对阀厅墙壁前后摆动， 另一端设有动触头， 传动基座上安装有折臂式传动拐臂， 传动拐臂远离传动基座的一端与接 地导电杆的中部铰接相连， 接地开关还包括与安装于传动基座的传动拐臂的一端固定连接的 垂直连杆， 垂直连杆连接一驱动垂直连杆旋转的操动机构， 传动拐臂与垂直连杆垂直设置。 工作时， 合闸时， 操动机构沿顺时针方向旋转， 通过垂直连杆及传动基座使传动拐臂沿顺时 针方向旋转， 同时向直伸展， 推动接地导电杆转动， 最终让接地导电杆上的动触头插入相应 设备上的静触头中， 实现合闸； 分闸过程与此相反。 现有的这种接地开关存在的问题在于： 1、 操动机构对接地导电杆操动时， 需要克服接地导电杆本身的重力矩， 即接地导电杆所需 的操作力较大， 这就使得接地导电杆的分、 合闸过程不够平稳， 容易出现接地导电杆断裂的 情形； 2、 由于垂直连杆与传动拐臂垂直， 这就使操动机构、 传动基座在传动拐臂的转动轴 向上的跨度较大， 操动机构、 传动基座和支座的布置占据了相应墙壁较大的空间。
发明内容
[0004] 本发明的目的在于一种接地导电杆机构， 以解决现有技术中的接地导电杆不能平稳 分合闸的问题； 本发明的目的还在于提供一种使用上述接地导电杆机构的直流阀厅用接地开 关。
1 (0005] 为了解决上述问题， 本发明中接地导电杆机构的技术方案为：
接地导电杆机构， 包括相对相应阀厅墙面可前后摆动的接地导电杆和用于安装在相应阀厅墙 面上的传动基座， 所述接地导电杆的一端固设有转动轴线沿左右方向延伸并与所述传动基座 转动配合的导电杆转轴， 所述的接地导电杆机构还包括通过平衡传动机构与所述导电杆转轴 传动连接以施加克服所述接地导电杆自身重力矩的力矩的配重结构。
[0006] 所述的平衡传动机构包括与所述导电杆转轴同轴固设的主动齿轮， 所述的平衡传动 机构还包括通过转轴转动设置于所述的传动基座上并与所述主动齿轮啮合传动的平衡齿轮， 所述的配重结构设置于所述平衡齿轮的转轴上。
[0007] 所述的配重结构包括首端与所述平衡齿轮的转轴固定设置、 末端沿所述平衡齿轮的 径向背离所述平衡齿轮的转轴方向延伸的平衡臂， 所述的配重结构还包括设置于所述平衡臂 末端的配重块。
[0008] 所述的主动齿轮为一个锥齿轮， 所述的平衡齿轮为一个转动轴线与所述主动齿轮的 转动轴线垂直相交的锥齿轮， 所述平衡齿轮的转动轴线沿前后方向延伸。
[0009] 本发明中一种直流阀厅用接地开关的技术方案为：
一种直流阔厅用接地开关， 包括接地导电杆机构和驱动装置， 接地导电杆机构包括相对相应 阀厅墙面可前后摆动的接地导电杆和用于安装在相应阀厅墙面上的传动基座， 所述接地导电 杆的一端固设有转动轴线沿左右方向延伸并与所述传动基座转动配合的导电杆转轴， 所述的 驱动装置与所述接地导电杆传动连接而驱动所述接地导电杆前后摆动， 所述的接地导电杆机 构还包括通过平衡传动机构与所述导电杆转轴传动连接以施加克服所述接地导电杆自身重力 矩的力矩的配重结构。
[0010] 所述的驱动装置包括操动机构及导电杆传动机构， 所述导电杆传动机构包括用于设 置于所述传动基座下方的相应岡厅墙面上的齿轮箱， 齿轮箱的输入端与所述操动机构的输出 端传动连接， 齿轮箱的输出端设置有转动轴线沿左右方向延伸的第二传动轴， 所述第二传动 轴上固设有延伸方向与所述第二传动轴径向一致的第一连杆， 所述的导电杆传动机构还包括 与所述接地导电杆靠近所述传动基座的一端固连的第三连杆， 所述第三连杆与所述接地导电 杆构成以所述导电杆转轴为转轴的拐臂结构， 所述的导电杆传动机构还包括连接于所述第一 连杆与第三连杆之间的第二连杆， 所述第二连杆的两端分别与所述第一连杆和第三连杆铰接 相连。
[0011] 所述齿轮箱的输入端设置有转动轴线沿上下方向延伸的第一传动轴， 所述第一传动轴 与所述第二传动轴通过锥齿轮传动机构传动连接， 所述的操动机构包括用于安装在所述齿轮 箱下方的相应阀厅墙面上的扭矩输出件， 所述扭矩输出件具有与所述第一传动轴同轴并与所 述第一传动轴直接或间接传动连接的扭矩输出轴。
[0012] 所述扭矩输出件的扭矩输出轴上同轴固设有垂直连杆， 所述垂直连杆远离所述扭矩 输出轴的一端与所述齿轮箱的第一传动轴固定设置。
[0013] 所述的平衡传动机构包括与所述导电杆转轴同轴固设的主动齿轮， 所述的平衡传动 机构还包括通过转轴转动设置于所述的传动基座上并与所述主动齿轮啮合传动的平衡齿轮， 所述的配重结构设置于所述平衡齿轮的转轴上。
[0014] 所述的主动齿轮为一个锥齿轮， 所述的平衡齿轮为一个转动轴线与所述主动齿轮的 转动轴线垂直相交的锥齿轮， 所述平衡齿轮的转动轴线沿前后方向延伸。
[0015] 本发明的有益效果为： 接地导电杆本身的重力矩被平衡结构的重力矩平衡， 在驱动 装置驱动接地导电杆摆动而完成分、 合闸的过程中， 不需要克服接地导电杆本身的重力矩， 这样接地导电杆分合闸所需的操作力就被减少， 从而使得接地导电杆的分、 合闸过程平稳、 可靠， 也就保证了接地导电杆的使用寿命。
[0016] 进一步的， 主动齿轮和平衡齿轮均采用锥齿轮结构， 使得平衡齿轮的转动轴线垂直 于相应阀厅墙面， 这样平衡结构的平衡臂和平衡块的运动轨迹可以与阀厅墙面平行， 并贴近 于阀厅的墙面， 其摆动过程完全不会影响到接地导电杆的摆动过程， 而且也减少了传动基座 在前后方向上的跨度， 节省了阀厅室内的空间； 同时由于平衡臂和平衡块的运动轨迹是与阀 厅墙面平行的， 因此平衡结构的摆动不会使得阀厅内的空气净距增加， 对阔厅的设备的电场 影响较小。
附图说明
[0017] 图 1 是本发明中一种直流阀厅用接地开关实施例的结构示意图， 同时也是本发明中 接地导电杆机构实施例的使用状态图；
图 2是图 1的侧视图；
图 3是图 1的俯视图；
图 4是图 1中的 A处放大图；
图 5是图 2中的 B处放大图。
具体实施方式
[0018] 一种直流阀厅用接地开关的实施例如图 1~5 所示： 包括接地导电杆机构和驱动装 置， 接地导电杆机构包括接地导电杆 6和用于安装在相应阀厅墙面 20上的传动基座 2， 接 地导电杆 6的一端用于安装相应动触头 13、 另一端固设有与传动基座 2转动配合的导电杆 转轴， 导电杆转轴的转动轴线沿左右方向延伸， 通过导电杆转轴使接地导电杆 6可以相对阀 厅墙面前后摆动， 接地导电杆机构还包括通过平衡传动机构与所述导电杆转轴传动连接以施 加克服所述接地导电杆 6 自身重力矩的力矩的配重结构。 平衡传动机构包括同轴固设于导电 杆转轴上的主动齿轮 15 , 主动齿轮 15为一个锥齿轮， 平衡传动机构还包括转动设置于传动 基座 2上的平衡齿轮 16， 平衡齿轮 16是一个与主动齿轮 15啮合传动且转动轴线沿前后方 向延伸的锥齿轮。 平衡齿轮 16的转轴上设置有带有配重块 1 的平衡结构， 平衡结构包括首 端与平衡齿轮 16的转轴固定设置、 末端沿平衡齿轮 16的径向背离平衡齿轮 16的转轴方向 延伸的平衡臂 12， 配重块 1设置于平衡臂 12的末端。
[0019] 驱动装置包括操动机构及向接地导电杆 6 传动的导电杆传动机构， 导电杆传动机构 包括用于设置于传动基座 2下方的相应阀厅墙面 20上的齿轮箱 4， 齿轮箱 4的输入端设置 有用于与操动机构传动连接的第一传动轴， 齿轮箱 4的输出端设置有转动轴线沿左右方向延 伸的第二传动轴 10， 第一传动轴的转动轴线沿上下方向设置， 而且第一、 二传动轴之间通 过锥齿轮传动机构传动。 操动机构包括用于安装在齿轮箱 4 下方的阀厅墙面 20上的扭矩输 出件 7， 扭矩输出件 7具有与所第一传动轴同轴设置的扭矩输出轴， 扭矩输出轴与第一传动 轴之间通过垂直连杆 5传动连接。 第二传动轴 10上固设有延伸方向与第二传动轴 10径向一 致的第一连杆 11， 导电杆传动机构还包括与接地导电杆 6靠近传动基座 2 的一端固连的第 三连杆 14， 第三连杆 14与接地导电杆 6构成以导电杆转轴为转轴的拐臂结构， 第一连杆 11 与第三连杆 14通过第二连杆 3传动连接， 第二连杆 3的两端分别与第一连杆 11和第三连杆 14 铰接相连。 图中件 8 表示均压环， 均压环安装在接地开关的各个突出部分， 其作用是为 了降低无线电干扰以满足阀厅内设备的电场要求； 在接地开关的分闸位置安装屏蔽环， 使阀 厅内的空气静距可以达到最小。 图中件 9表示安装在相应设备上的静触头， 静触头 9为环形 触头， 外面安装导向罩， 使得接地导电杆 6 即使出现小的偏差， 动触头 13依然可以正常的 合闸。 静触头 9可以通过特定的安装结构方便、 灵活的安装在阔厅内的换流变套管、 中性母 性、 平波电抗器套管等各种需要进行接地的设备上。 在本直流阀厅用接地开关实施例中， 接 地开关安装在阀厅的极线侧， 用于极线侧高压电器设备的接地。 当然在本直流阀厅用接地开 关的其它实施例中， 接地开关可以根据不同需要安装碍法庭换流变 Y 绕组阀侧、 阀厅换流 变 D绕组阀侧或中性母性侧， 以对需要接地的设备进行接地。 图 2 中的虚线接地导电杆表 示处于合闸状态。
[0020] 合闸时， 扭矩输出件 7 输出扭矩， 第二传动轴被第一传动轴带动转动， 第一连杆 11 随第二传动轴的转动而摆动， 第二连杆 3驱动第三连杆 14和接地导电杆 6构成的拐臂结构 绕导电杆转轴转动， 从而使接地导电杆 6完成合闸过程； 分闸时， 只需扭矩输出件 7向反方 向输出扭矩即可。 第一连杆 11、 第二连杆 3、 第三连杆 14和接地导电杆 6构成了空间四连 杆机构， 通过齿轮箱 4和空间四连杆的作用， 使垂直连杆 5可以和分闸状态下的接地导电杆 6平行设置， 这就使得传动基座 2、 齿轮箱 4和扭矩输出件 7可以沿一个方向 （上下方向） 共线布置， 大大减小了这三个部件在阀厅墙面 20 上占用的空间； 同时操动机构在对接地导 电杆 6操作时， 接地导电杆 6的重力矩被配重块 1 自身的重力矩平衡， 接地导电杆 6转动所 需的操作力被减小， 使得接地开关的分、 合闸过程平稳、 可靠； 主动齿轮 15和平衡齿轮 16 均为锥齿轮， 这就使得配重块 1 的轨迹可以平行于阀厅墙面 20， 一方面缩小了接地开关占 用阀厅的空间， 另一方面配重块 1在运动时， 也不会使得阀厅内的空气静距增加， 对阀厅内 的设备的电场影响较小。
[0021] 在本直流阀厅用接地开关的其它实施例中， 主动齿轮和平衡齿轮还可以均是直齿 轮； 驱动装置中的齿轮箱、 第一、 二、 三连杆还均可以不设， 此时可以在扭矩输出件的扭矩 输出轴上设置的折臂式传动拐臂， 折叠式传动拐臂远离扭矩输出件的一端与接地导电杆的中 部铰接相连； 当然平衡结构的配重块也可以直接设置于平衡齿轮的转轴上； 平衡传动机构还 可以是带传动机构或链传动机构。
[0022] 接地导电杆机构的实施例如图 1〜5 所示： 接地导电杆机构的具体结构如上述直流阔 厅用接地开关实施例中所述的接地导电杆机构， 在此不再详述。

Claims

权 利 要 求 书
1. 接地导电杆机构， 包括相对相应阀厅墙面可前后摆动的接地导电杆和用于安装在相应阀 厅墙面上的传动基座， 其特征在于： 所述接地导电杆的一端固设有转动轴线沿左右方向延伸 并与所述传动基座转动配合的导电杆转轴， 所述的接地导电杆机构还包括通过平衡传动机构 与所述导电杆转轴传动连接以施加克服所述接地导电杆自身重力矩的力矩的配重结构。
2. 根据权利要求 1 所述的接地导电杆机构， 其特征在于： 所述的平衡传动机构包括与所述 导电杆转轴同轴固设的主动齿轮， 所述的平衡传动机构还包括通过转轴转动设置于所述的传 动基座上并与所述主动齿轮啮合传动的平衡齿轮， 所述的配重结构设置于所述平衡齿轮的转 轴上。
3. 根据权利要求 2 所述的接地导电杆机构， 其特征在于： 所述的配重结构包括首端与所述 平衡齿轮的转轴固定设置、 末端沿所述平衡齿轮的径向背离所述平衡齿轮的转轴方向延伸的 平衡臂， 所述的配重结构还包括设置于所述平衡臂末端的配重块。
4. 根据权利要求 2 或 3 所述的接地导电杆机构， 其特征在于： 所述的主动齿轮为一个锥齿 轮， 所述的平衡齿轮为一个转动轴线与所述主动齿轮的转动轴线垂直相交的锥齿轮， 所述平 衡齿轮的转动轴线沿前后方向延伸。
5. —种直流阀厅用接地开关， 包括接地导电杆机构和驱动装置， 接地导电杆机构包括相对 相应阀厅墙面可前后摆动的接地导电杆和用于安装在相应阀厅墙面上的传动基座， 其特征在 于： 所述接地导电杆的一端固设有转动轴线沿左右方向延伸并与所述传动基座转动配合的导 电杆转轴， 所述的驱动装置与所述接地导电杆传动连接而驱动所述接地导电杆前后摆动， 所 述的接地导电杆机构还包括通过平衡传动机构与所述导电杆转轴传动连接以施加克服所述接 地导电杆自身重力矩的力矩的配重结构。
6. 根据权利要求 5 所述的直流阀厅用接地开关， 其特征在于： 所述的驱动装置包括操动机 构及导电杆传动机构， 所述导电杆传动机构包括用于设置于所述传动基座下方的相应阀厅墙 面上的齿轮箱， 齿轮箱的输入端与所述操动机构的输出端传动连接， 齿轮箱的输出端设置有 转动轴线沿左右方向延伸的第二传动轴， 所述第二传动轴上固设有延伸方向与所述第二传动 轴径向一致的第一连杆， 所述的导电杆传动机构还包括与所述接地导电杆靠近所述传动基座 的一端固连的第三连杆， 所述第三连杆与所述接地导电杆构成以所述导电杆转轴为转轴的拐 臂结构， 所述的导电杆传动机构还包括连接于所述第一连杆与第三连杆之间的第二连杆， 所 述第二连杆的两端分别与所述第一连杆和第三连杆铰接相连。
7. 根据权利要求 6 所述的直流阀厅用接地开关， 其特征在于： 所述齿轮箱的输入端设置有 转动轴线沿上下方向延伸的第一传动轴， 所述第一传动轴与所述第二传动轴通过锥齿轮传动 机构传动连接， 所述的操动机构包括用于安装在所述齿轮箱下方的相应阀厅墙面上的扭矩输 出件， 所述扭矩输出件具有与所述第一传动轴同轴并与所述第一传动轴直接或间接传动连接 的扭矩输出轴。
8. 根据权利要求 7 所述的直流阀厅用接地开关， 其特征在于： 所述扭矩输出件的扭矩输出 轴上同轴固设有垂直连杆， 所述垂直连杆远离所述扭矩输出轴的一端与所述齿轮箱的第一传 动轴固定设置。
9. 根据权利要求 5 所述的直流阀厅用接地开关， 其特征在于： 所述的平衡传动机构包括与 所述导电杆转轴同轴固设的主动齿轮， 所述的平衡传动机构还包括通过转轴转动设置于所述 的传动基座上并与所述主动齿轮啮合传动的平衡齿轮， 所述的配重结构设置于所述平衡齿轮 的转轴上。
10. 根据权利要求 9所述的直流阀厅用接地开关， 其特征在于： 所述的主动齿轮为一个锥齿 轮， 所述的平衡齿轮为一个转动轴线与所述主动齿轮的转动轴线垂直相交的锥齿轮， 所述平 衡齿轮的转动轴线沿前后方向延伸。
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