WO2022121874A1 - 双动灭弧室传动结构 - Google Patents

双动灭弧室传动结构 Download PDF

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Publication number
WO2022121874A1
WO2022121874A1 PCT/CN2021/135967 CN2021135967W WO2022121874A1 WO 2022121874 A1 WO2022121874 A1 WO 2022121874A1 CN 2021135967 W CN2021135967 W CN 2021135967W WO 2022121874 A1 WO2022121874 A1 WO 2022121874A1
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WIPO (PCT)
Prior art keywords
double
static
axial
arc
track
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PCT/CN2021/135967
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English (en)
French (fr)
Inventor
王鹏超
魏建巍
王文博
孙珂珂
杨珂
周洪伟
韩峰
朱秋楠
张良杰
Original Assignee
平高集团有限公司
国网江苏省电力有限公司经济技术研究院
国家电网有限公司
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Publication of WO2022121874A1 publication Critical patent/WO2022121874A1/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
    • H01H33/02—Details
    • H01H33/46—Interlocking mechanisms
    • 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
    • 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 invention relates to a transmission structure of a double-action arc extinguishing chamber.
  • the arc extinguishing chamber is of great significance for its arc extinguishing capability, the demand for operating work, and the space occupation.
  • a double-acting arc-extinguishing chamber is proposed in the prior art.
  • a double-acting linkage structure is arranged between it and the moving end part.
  • the double-action linkage structure includes connecting rod transmission form (for example, the double-action arc interrupter transmission structure disclosed in the Chinese patent document with publication number CN109767949A), rack and pinion transmission form, and shift fork chute transmission form (for example, the publication number is CN202651038U.
  • the double-acting high-voltage SF6 circuit breaker disclosed in the Chinese patent document (self-energy arc extinguishing chamber), etc. is used to make the static arc contact move under the drive of the moving end assembly during opening and closing.
  • the structure of the double-acting arc interrupter in the form of connecting rod transmission is relatively simple.
  • the connecting rod is subjected to a large lateral force, which is prone to deformation, and the processing and manufacturing of parts is difficult. , high cost, poor mechanical reliability.
  • the purpose of the present invention is to provide a double-action arc interrupter transmission structure, which solves the problem that the connecting rod of the current double-action arc interrupter transmission structure in the form of connecting rod transmission is subject to large lateral force, is prone to deformation, and is difficult to process and manufacture parts. High cost and poor mechanical reliability.
  • the transmission structure of the double-action arc extinguishing chamber adopts the following technical solutions:
  • Double-acting arc interrupter transmission structure including:
  • Static end components including static arc contacts, and the static arc contacts are guided forward and backward;
  • the moving end assembly is used to move forward and backward under the drive of the operating mechanism to realize opening and closing;
  • the double-action linkage structure is used to drive the static arc contact to move when the moving end component moves;
  • the double-action linkage structure includes:
  • T-shaped guide rail fixed on the static support of the static end assembly, including axial track and vertical track;
  • Axial track extending in the front-rear direction, on which an axial slider is guided and assembled;
  • the vertical track extending perpendicular to the axial track, is guided and equipped with a vertical slider;
  • the double-action linkage structure further includes an active link, an intermediate link and a driven link;
  • the active connecting rod is connected between the axial slider and the large nozzle assembly of the moving end assembly, and moves synchronously with the large nozzle assembly;
  • the middle link is hinged with the active link and the driven link at both ends, and the part between the two ends is hinged with the vertical slider;
  • One end of the driven link away from the intermediate link is hinged on the static arc contact.
  • the axial track can limit the active link to the axial movement through the axial slider, and the vertical track can connect the middle hinge point of the intermediate link through the vertical slider. It is limited to vertical movement in the form of floating, while satisfying the driving of the static arc contact, compared with the active link that needs to be rotated in the transmission process in the prior art, the force is stable, the lateral force is small, and deformation is not easy to occur. , which is conducive to reducing the difficulty of processing and manufacturing parts, reducing costs, and ensuring mechanical reliability; at the same time, the intermediate connecting rod is in a floating form, which can control the opening and closing speed of the static arc contact.
  • the absolute stroke of the end increases, the pressure of the compression chamber increases, the air blowing becomes stronger, and the recovery rate of the insulating medium becomes faster, which is beneficial to shorten the insulation establishment time, shorten the arc extinguishing chamber stroke, and reduce the appearance size of the circuit breaker.
  • an axial slider is guided and assembled on the axial track, and the active link is connected to the axial slider.
  • the two ends of the active link are respectively connected with the axial sliding block and the large nozzle assembly in a hinged manner.
  • the above technical solution can avoid over-positioning of both ends of the active connecting rod, which is beneficial to reduce eccentric wear, thereby improving the reliability of the mechanism.
  • the hinge point of the intermediate link and the vertical slider is located on the side of the intermediate link close to the driven link.
  • the T-shaped guide rail is provided with at least three fixing ears, and the fixing ears are used to fix the T-shaped guide rail to the static support;
  • Both the axial track and the vertical track are provided with fixing ears, and the axial track is provided with two or more of the fixing ears.
  • the active link is a straight rod extending in the front-rear direction.
  • the adoption of the above technical scheme can minimize the force deformation of the active connecting rod and improve the transmission efficiency of the force.
  • the axial track has an opening end and a closing end, the opening end and the closing end are respectively located on the front and rear sides of the vertical track, and the opening end is close to the moving end assembly;
  • the adoption of the above technical scheme is beneficial to control the pressure angle of the intermediate connecting rod, improve the transmission efficiency and reduce the demand for structural strength.
  • the hinge point between the vertical sliding block and the intermediate connecting rod is always located on the lower side of the axis of the static arc contact during the opening and closing process.
  • the pressure angle of the intermediate connecting rod can be better controlled by adopting the above technical scheme.
  • both ends of the axial track are closed structures.
  • one end of the vertical track is butted on the axial track, and the other end is a closed structure.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of the double-action arc interrupter transmission structure in the closed state of the present invention
  • FIG. 2 is a schematic structural diagram of Embodiment 1 of the transmission structure of the double-action arc extinguishing chamber in the open state of the present invention.
  • the names of the components corresponding to the corresponding reference signs in the figure are: 1. T-shaped guide rail; 2. Active connecting rod; 3. Static support; 4. Large nozzle fixing seat; 5. Pressure plate; 6. Static contact seat ;7, static end shielding; 8, static contact finger; 9, moving main contact; 10, moving end shielding cylinder; 11, insulating rod; 12, moving contact seat; 13, moving arc contact; 14, small nozzle ;15, large nozzle; 16, guide sleeve; 17, static arc contact; 18, driven connecting rod; 19, vertical slider; 20, intermediate connecting rod; 21, axial slider; 22, arc extinguishing chamber Sleeve; 23. Fixed ear.
  • the terms “installed”, “connected” and “connected” that may appear should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • installed may be a fixed connection or a detachable connection, Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • the term “provided” that may appear should be understood in a broad sense.
  • the object "provided with” may be a part of the body or a separate body from the body. Arranged and connected on the body, the connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meanings of the above terms in the present invention through specific situations.
  • Embodiment 1 of the double-action arc interrupter transmission structure in the present invention is a single-action arc interrupter transmission structure in the present invention:
  • the arc extinguishing chamber corresponding to the double-action arc extinguishing chamber transmission structure includes the arc extinguishing chamber sleeve 22, and the arc extinguishing chamber sleeve 22 is used to form a closed gas chamber to be filled with SF6 arc extinguishing gas ;
  • Arc extinguishing chamber casing 22 is provided with static end components, moving end components and double-acting linkage structure.
  • the static end assembly includes a static support 3 , a static contact base 6 , and a static arc contact 17 .
  • the static contact base 6 is fixed on the static support 3 of the static end assembly, and its end close to the static support 3 is provided with a guide sleeve 16 for the static arc contact 17 to guide and move in the front and rear directions and conduct conductive connection.
  • the static contact base 6 is provided with a static contact finger 8 and a static terminal shield 7, and the static contact finger 8 and the static terminal shield 7 constitute a static main contact.
  • the transmission structure of the double-acting arc extinguishing chamber also includes a moving end shielding cylinder 10.
  • the moving end shielding cylinder 10 is provided with a moving end assembly.
  • the moving end assembly includes a moving main contact 9, a large nozzle 15, a small nozzle 14, and a moving arc contact 13. and the insulating rod 11, the moving main contact 9 is fixedly connected to the moving contact seat 12, and is guided and assembled in the moving end shielding cylinder 10 along the front and rear directions, and the moving arc contact 13 and the small nozzle 14 are also fixed on the moving contact seat. 12 on.
  • the insulating pull rod 11 is connected to the moving contact base 12, and is used to drive the moving main contact 9, the large nozzle 15, the small nozzle 14, the moving arc contact 13 and other components to move back and forth under the driving of the operating mechanism.
  • the front end of the large spout 15 is provided with an outer flange, and the outer flange is clamped between the large spout fixing seat 4 and the pressure plate 5 to form a large spout assembly, and the large spout assembly is guided and arranged on the cylindrical static contact seat 6 along the front and rear directions.
  • the double-action linkage structure is used to drive the static arc contact 17 to move when the moving end assembly moves, including the T-shaped guide rail 1 , the active link 2 , the intermediate link 20 and the driven link 18 .
  • the T-shaped guide rail 1 includes an axial track and a vertical track.
  • the axial track extends in the front-rear direction, and an axial slider 21 is guided and assembled thereon along the front-rear direction.
  • the directional guide is fitted with a vertical slide 19 .
  • One end of the vertical rail is butted on the axial rail, the other end is a closed structure, and both ends of the axial rail are closed structures.
  • the front and rear ends of the axial track are respectively provided with a fixing ear 23 , and the lower end of the vertical track is provided with a fixing ear 23 .
  • the T-shaped guide rail 1 is fixed on the static support 3 of the static end assembly through three fixing ears 23 .
  • the fixing method of the fixing lugs 23 and the static support 3 can be flexibly selected.
  • threaded holes are respectively provided on the two sides of the fixing lugs 23 along the direction perpendicular to the paper surface in the figure, and the bolts passing through the static support 3 are fixed to the static support.
  • the upper end of the upper fixing ear 23 and the lower end of the lower fixing ear 23 are provided with threaded holes, which are fixed to the static support 3 through the bolts passing through the static support 3 in the up-down direction.
  • the contact part of the fixing lug 23 and the static support 3 can be set in an arc shape corresponding to the inner wall surface of the static support 3 .
  • the driving link 2 , the intermediate link 20 and the driven link 18 are all straight rods.
  • the active link 2 passes through the avoidance hole provided at the rear end of the static contact base 6, and both ends are hinged on the axial slider 21 and the large nozzle fixing seat 4 of the large nozzle assembly, and move synchronously with the large nozzle assembly.
  • the intermediate link 20 is an eccentric rotating plate, and its two ends are hinged with the active link 2 and the driven link 18 respectively, and the part between the two ends is hinged with the vertical slider 19, and the hinge point is biased towards the intermediate link 20 close to the driven
  • One side of the connecting rod 18, and the hinge point between the vertical sliding block 19 and the intermediate connecting rod 20 is always located on the lower side of the axis of the static arc contact 17 during the opening and closing process.
  • the axial track has an opening end and a closing end, the opening end and the closing end are located on the front and rear sides of the vertical track respectively, and the opening end is close to the moving end assembly; when the arc extinguishing chamber is in the opening state, the active link 2 The corresponding end of 2 moves to the opening end, and when the arc extinguishing chamber is in the closing state, the corresponding end of the active link 2 moves to the closing end.
  • the insulating rod 11 drives the moving contact base 12, the moving main contact 9, the small nozzle 14, the moving arc contact 13, the large nozzle 15, the large nozzle fixing seat 4, and the pressure plate 5 along the axis of the arc-extinguishing chamber.
  • the absolute opening speed can be increased, thereby improving the breaking capacity of the arc extinguishing chamber and reducing the speed of the operating mechanism. , the characteristics are stable and reliable.
  • the closing process of the arc extinguishing chamber is consistent with the transmission principle of the opening process of the arc extinguishing chamber, and the movement direction is opposite.
  • the above-mentioned double-action arc interrupter transmission structure adopts a single set of transmission system design at the static end of the arc interrupter.
  • the static contact fingers 8 and the static end shield 7 and other components are fixed, and only the static arc contacts of the core breaking parts are retained. 17 movement, compared with the previous arc-extinguishing chamber where the static end of the arc-extinguishing chamber realizes double-action through the fork and double-track structure, this structure reduces the number of moving parts at the static end, saves materials, effectively reduces the operating work, and reduces the To meet the needs of the mechanism, improve the operational stability of the circuit breaker.
  • the axial track can effectively constrain the movement trajectory of the active link 2, so that it always maintains a linear motion, eliminates the lateral force on the active link 2, and minimizes the force on the active link 2.
  • the deformation improves the transmission efficiency of the force.
  • the relative movement speed of the contacts can be increased to quickly establish the effective insulation distance of the arc-extinguishing chamber, which can shorten the arc-extinguishing chamber stroke and reduce the product operating work.
  • the vertical rail can limit the vertical slider 19 to the left and right to make it reciprocate up and down, which not only realizes the power transmission of the intermediate link 20 to the static and dynamic end components of the arc extinguishing chamber, but also realizes the vertical movement of the intermediate link 20.
  • the static arc contact can be controlled.
  • reducing the appearance size of the circuit breaker, and reducing the pressure angle of the transmission structure realizing the efficient conversion of the dynamic and static end speeds, which can improve the breaking performance and breaking capacity of the arc extinguishing chamber, and can also reduce the stress on key transmission parts.
  • Embodiment 2 of the double-action arc extinguishing chamber transmission structure in the present invention is a diagrammatic representation of Embodiment 1 of the double-action arc extinguishing chamber transmission structure in the present invention:
  • Embodiment 1 The difference between this embodiment and Embodiment 1 is that in Embodiment 1, both ends of the active link 2 are hinged on the axial slider 21 and the large nozzle assembly respectively, while in this embodiment, the Both ends are directly fixed to the axial slide 21 and the large spout assembly.
  • the axial slider 21 can also be formed by a part of the active link 2; furthermore, in other embodiments, the active link 2 can be fixed on the large nozzle assembly at one end and hinged at the other end.
  • At least one end of the active link 2 may also be provided with a vertical long hole, and a pin shaft is provided on the axial slider 21 and/or the large nozzle assembly, and the pin shaft is guided vertically Set in the vertical slot to avoid over-positioning.
  • Embodiment 3 of the double-action arc interrupter transmission structure in the present invention is a diagrammatic representation of the double-action arc interrupter transmission structure in the present invention.
  • Embodiment 1 The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the hinge point between the intermediate link 20 and the vertical slider 19 is located on the side of the intermediate link 20 close to the driven link 18, while this embodiment , the hinge point of the intermediate link 20 and the vertical slider 19 is located on the side of the intermediate link 20 close to the active link 2 .
  • the hinge point of the intermediate link 20 and the vertical slider 19 can also be located at the midpoint of the intermediate link 20.
  • Embodiment 4 of the double-action arc interrupter transmission structure in the present invention is a single-action arc interrupter transmission structure in the present invention.
  • the active link 2 is a straight rod extending in the front-rear direction, while in this embodiment, the active link 2 is an L-shaped structure with one end connected to the large nozzle. The components are connected, and the other end is connected with the axial sliding block 21 to adapt to the vertical position difference of the connection points at both ends of the active link 2 .
  • the active link 2 can also be a straight rod connected obliquely between the axial slider 21 and the large nozzle assembly. Due to the guiding effect of the axial track, the inclination angle of the active link 2 is fixed. Compared with the connecting rod that needs to be rotated during the transmission process, it still has a better effect of improving the force.

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

Abstract

一种双动灭弧室传动结构，包括双动联动结构，双动联动结构包括：T形导轨（1），固定在静端组件的静支座（3）上，包括轴向轨道和垂向轨道；轴向轨道，沿前后方向延伸，其上导向装配有主动连杆（2），连接在动端组件的大喷口（15）组件上，随大喷口（15）组件同步运动；垂向轨道，垂直于轴向轨道延伸，其上导向装配有垂向滑块（19）；所述双动联动结构还包括中间连杆（20）和从动连杆（18）；中间连杆（20），两端分别与主动连杆（2）和从动连杆（18）铰接，两端之间的部位与垂向滑块（19）铰接；从动连杆（18），远离中间连杆（20）的一端铰接在静弧触头（17）上。该结构能够解决目前连杆传动形式的双动灭弧室传动结构连杆所受侧向力大，容易出现变形，零部件加工制造难度高、成本高，机械可靠性差的问题。

Description

双动灭弧室传动结构 技术领域
本发明涉及双动灭弧室传动结构。
背景技术
随着全球电力工业持续高速发展，高压断路器的应用越来越普及。目前，国内外高压断路器的生产厂家越来越多，所用灭弧室技术及种类也不断涌现。但是不同技术灭弧室使用的机械传动结构、传动效率、开断性能、生产成本及维护成本也参差不齐。
灭弧室作为断路器的核心部件，其灭弧能力、对操作功的需求、空间占用等具有重要意义。为了提高灭弧室灭弧能力，现有技术中提出了双动灭弧室，双动灭弧室是将静弧触头设置成可导向活动的形式，并在灭弧室的静弧触头与动端部分之间设置双动联动结构。双动联动结构包括连杆传动形式(例如公开号为CN109767949A的中国专利文献中公开的双动灭弧室传动结构)、齿轮齿条传动形式、拨叉滑槽传动形式(例如公开号为CN202651038U的中国专利文献中公开的双动式高压SF6断路器自能灭弧室)等，用于在分合闸时使静弧触头在动端组件的驱动下也能够运动。
连杆传动形式的双动灭弧室结构较为简单，但是，目前连杆传动形式的双动灭弧室传动结构中，连杆所受侧向力大，容易出现变形，零部件加工制造难度高、成本高，机械可靠性差。
发明内容
本发明的目的是提供一种双动灭弧室传动结构，解决目前连杆传动形式的双动灭弧室传动结构连杆所受侧向力大，容易出现变形，零部件加工制造难度高、成本高，机械可靠性差的问题。
本发明中双动灭弧室传动结构采用如下技术方案：
双动灭弧室传动结构，包括：
静端组件，包括静弧触头，静弧触头前后导向设置；
动端组件，用于在操动机构的驱动下前后动作以实现分合闸；
双动联动结构，用于在动端组件动作时带动静弧触头动作；
所述双动联动结构包括：
T形导轨，固定在静端组件的静支座上，包括轴向轨道和垂向轨道；
轴向轨道，沿前后方向延伸，其上导向装配有轴向滑块；
垂向轨道，垂直于轴向轨道延伸，其上导向装配有垂向滑块；
所述双动联动结构还包括主动连杆、中间连杆和从动连杆；
主动连杆，连接在轴向滑块与动端组件的大喷口组件之间，随大喷口组件同步运动；
中间连杆，两端分别与主动连杆和从动连杆铰接，两端之间的部位与垂向滑块铰接；
从动连杆，远离中间连杆的一端铰接在静弧触头上。
有益效果：采用上述技术方案，通过设置T形导轨，轴向轨道能够通过轴向滑块将主动连杆限制为轴向运动，垂向轨道能够通过垂向滑块将中间连杆的中部铰接点以浮动形式限制为垂向运动，在满足对静弧触头的驱动的同时，与现有技术中传动过程中需要转动的主动连杆相比，受力稳定，侧向力小，不易出现变形，从而有利于降低零部件加工制造难度、降低成本，也有利于保证机械可靠性；同时，中间连杆为浮动形式，能够控制静弧触头的分合闸速度，在刚分点位置，动端的绝对行程增大，压气室压力提高，气吹变强，绝缘介质恢复速率变快，有利于缩短绝缘建立时间，缩短灭弧室行程，缩小断路器外观尺寸。
作为一种优选的技术方案：所述轴向轨道上导向装配有轴向滑块，所述主动连杆连接在轴向滑块上。
有益效果：设置轴向滑块便于保证与轴向轨道的导向配合，加工方便。
作为一种优选的技术方案：所述主动连杆的两端分别与轴向滑块和大喷口组件通过铰接的方式连接。
有益效果：采用上述技术方案能够避免主动连杆的两端形成过定位，有利于减小偏磨，从而提高机构可靠性。
作为一种优选的技术方案：所述中间连杆与垂向滑块的铰接点位于中间连杆靠近从动连杆的一侧。
有益效果：采用上述技术方案能够形成省力杠杆，更有利于减小主动连杆的受力。
作为一种优选的技术方案：所述T形导轨上设有至少三只固定耳，固定耳用于将T形导轨固定到静支座上；
所述轴向轨道和垂向轨道上均设有固定耳，所述轴向轨道上设有两只以上所述固定耳。
有益效果：采用上述技术方案能够方便地实现T形导轨的固定，结构简单。
作为一种优选的技术方案：所述主动连杆为沿前后方向延伸的直杆。
有益效果：采用上述技术方案能够最大程度地减小主动连杆的受力形变，提高力的传动效率。
作为一种优选的技术方案：所述轴向轨道具有分闸端和合闸端，分闸端和合闸端分别位于垂向轨道的前后两侧，分闸端靠近所述动端组件；
灭弧室处于分闸状态时，主动连杆的对应端运动至分闸端，灭弧室处于合闸状态时，主动连杆的对应端运动至合闸端。
有益效果：采用上述技术方案有利于控制中间连杆的压力角度，有利于提高传动效率、降低对结构强度的需求。
作为一种优选的技术方案：所述垂向滑块与中间连杆的铰接点在分合闸过程中始终位于静弧触头轴线的下侧。
有益效果：采用上述技术方案能够更好地控制中间连杆的压力角度。
作为一种优选的技术方案：所述轴向轨道的两端为封闭结构。
有益效果：采用上述技术方案有利于保证轴向轨道的结构强度。
作为一种优选的技术方案：所述垂向轨道的一端对接在轴向轨道上，另一端为封闭结构。
有益效果：采用上述技术方案结构简单，便于加工，用料少，同时有利于保证垂向轨道的结构强度。
附图说明
图1是本发明中双动灭弧室传动结构的实施例1处于合闸状态的结构示意图；
图2是本发明中双动灭弧室传动结构的实施例1处于分闸状态的结构示意图。
图中相应附图标记所对应的组成部分的名称为：1、T形导轨；2、主动连杆；3、静支座；4、大喷口固定座；5、压板；6、静触头座；7、静端屏蔽；8、静触指；9、动主触头；10、动端屏蔽筒；11、绝缘拉杆；12、动触头座；13、动弧触头；14、小喷口；15、大喷口；16、导向套；17、静弧触头；18、从动连杆；19、垂向滑块；20、中间连杆；21、轴向滑块；22、灭弧室套管；23、固定耳。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明，即所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明的实施例，本领域技术人员在 没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本发明的具体实施方式中可能出现的术语“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，可能出现的术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，可能出现的语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
在本发明的描述中，除非另有明确的规定和限定，可能出现的术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接连接，也可以是通过中间媒介间接相连，或两个元件内部的连通。对于本领域技术人员而言，可以通过具体情况理解上述术语在本发明中的具体含义。
在本发明的描述中，除非另有明确的规定和限定，可能出现的术语“设有”应做广义理解，例如，“设有”的对象可以是本体的一部分，也可以是与本体分体布置并连接在本体上，该连接可以是可拆连接，也可以是不可拆连接。对于本领域技术人员而言，可以通过具体情况理解上述术语在本发明中的具体含义。
以下结合实施例对本发明作进一步的详细描述。
本发明中双动灭弧室传动结构的实施例1：
如图1和图2所示，双动灭弧室传动结构所对应的灭弧室包括灭弧室套管22，灭弧室套管22用于形成封闭气室以充入SF 6灭弧气体；灭弧室套管22内设有静端组件、动端组件和双动联动结构。
静端组件包括静支座3、静触头座6、静弧触头17。静触头座6固定在静端组件的静支座3上，其靠近静支座3的一端设有导向套16，导向套16供静弧触头17沿前后方向导向移动并导电连接。静触头座6上设有静触指8和静端屏蔽7，静触指8、静端屏蔽7构成静主触头。
双动灭弧室传动结构还包括动端屏蔽筒10，动端屏蔽筒10上设有动端组件，动端组件包括动主触头9、大喷口15、小喷口14、动弧触头13和绝缘拉杆11，动主触头9固定连接在动触头座12上，并沿前后方向导向装配在动端屏蔽筒10内，动弧触头13和小喷口14 也固定在动触头座12上。绝缘拉杆11连接在动触头座12上，用于在操动机构的驱动下带动动主触头9、大喷口15、小喷口14、动弧触头13等零部件前后运动。大喷口15的前端设有外凸缘，外凸缘夹装在大喷口固定座4和压板5之间，构成大喷口组件，大喷口组件沿前后方向导向设置在筒状的静触头座6内。
双动联动结构用于在动端组件动作时带动静弧触头17动作，包括T形导轨1、主动连杆2、中间连杆20和从动连杆18。
T形导轨1包括轴向轨道和垂向轨道，轴向轨道沿前后方向延伸，其上沿前后方向导向装配有轴向滑块21；垂向轨道垂直于轴向轨道延伸，其上垂直于前后方向导向装配有垂向滑块19。垂向轨道的一端对接在轴向轨道上，另一端为封闭结构，所述轴向轨道的两端均为封闭结构。轴向轨道的前后两端分别设有一只固定耳23，垂向轨道的下端设有一只固定耳23。T形导轨1通过三只固定耳23固定在静端组件的静支座3上。固定耳23与静支座3的固定方式可以灵活选择，例如，在固定耳23上沿垂直于图中纸面方向的两侧分别设置螺纹孔，通过穿过静支座3的螺栓固定到静支座3上；再如，在上方固定耳23的上端和下方固定耳23的下端设有螺纹孔，通过沿上下方向穿过静支座3的螺栓固定到静支座3上，为了保证定位精度，固定耳23与静支座3的接触部位可以设置为与静支座3的内壁面对应的圆弧形。
主动连杆2、中间连杆20以及从动连杆18均为直杆。主动连杆2从静触头座6的后端设置的避让孔中穿过，两端分别铰接在轴向滑块21和大喷口组件的大喷口固定座4上，随大喷口组件同步运动。中间连杆20为偏心转板，其两端分别与主动连杆2和从动连杆18铰接，两端之间的部位与垂向滑块19铰接，铰接点偏向中间连杆20靠近从动连杆18的一侧，并且，垂向滑块19与中间连杆20的铰接点在分合闸过程中始终位于静弧触头17轴线的下侧。轴向轨道具有分闸端和合闸端，分闸端和合闸端分别位于垂向轨道的前后两侧，分闸端靠近所述动端组件；灭弧室处于分闸状态时，主动连杆2的对应端运动至分闸端，灭弧室处于合闸状态时，主动连杆2的对应端运动至合闸端。
灭弧室分闸过程，绝缘拉杆11带动动触头座12、动主触头9、小喷口14、动弧触头13、大喷口15、大喷口固定座4、压板5沿灭弧室轴向向图中的右侧(即静端组件的前侧、动端组件的后侧)做直线运动，大喷口固定座4带动主动连杆2在T形导轨1的轴向轨道内做直线运动，从动连杆18通过中间连杆20连接主动连杆2运动，从动连杆18带动静弧触头17在导向套16的约束下向左(即静端组件的后侧、动端组件的前侧)直线运动，实现灭弧室合闸。整个传动过程中，由于动弧触头13与静弧触头17能够反方向相对运动，因此能够增大绝对分闸速度，从而能够提高灭弧室的开断能力，同时可以降低操动机构速度，特性稳 定可靠。灭弧室的合闸过程与灭弧室的分闸过程传动原理一致，运动方向相反。
上述双动灭弧室传动结构，在灭弧室的静端采用了单套传动***设计，静触指8及静端屏蔽7等零部件固定不变，仅保留核心开断零件静弧触头17的运动，与以前灭弧室静端通过拨叉、双轨道结构来实现双动的灭弧室相比，该结构减少了静端的运动零件数量，可节约材料，有效降低操作功，降低对机构的需求，提高断路器的操作稳定性。
并且，轴向轨道能够有效地约束主动连杆2的运动轨迹，使其始终保持直线运动，消除了主动连杆2所受的侧向力，最大程度地减小了主动连杆2的受力形变，提高了力的传动效率。在相同操作功下，能够提高触头相对运动速度以快速建立灭弧室有效绝缘距离，可缩短灭弧室行程，降低产品操作功。
同时，垂向轨道能够对垂向滑块19进行左右限位，使其进行上下往复运动，既实现中间连杆20对灭弧室动静端组件的动力传递，又能实现中间连杆20的上下浮动，进而实现静弧触头17的变速运动，与固定式转向板双动结构(例如公开号为CN109767949A的中国专利文献中公开的双动灭弧室传动结构)相比，能够控制静弧触头17的分合闸速度，在刚分点位置，动端的绝对行程增大，压气室压力提高，气吹变强，绝缘介质恢复速率变快，有利于缩短绝缘建立时间，缩短灭弧室行程，缩小断路器外观尺寸，并且减小了传动结构压力角度，实现了动静端速度的高效转化，能够使灭弧室的开断性能提高、开断容量增大，还能够降低关键传动零件受力，减小零件加工难度，降低零件成本。在相同的目标速度下，灭弧室所需的操作功降低，可设计低成本机构，降低设备成本，可应用于252kV及以上电压等级的高性能、大容量、低成本的断路器，并且可适应新的电站改造，降低设备运行成本。
本发明中双动灭弧室传动结构的实施例2：
本实施例与实施例1的不同之处在于，实施例1中，主动连杆2的两端分别铰接在轴向滑块21和大喷口组件上，而本实施例中，主动连杆2的两端直接固定到轴向滑块21和大喷口组件上。另外，在其他实施例中，轴向滑块21也可以由主动连杆2的一部分构成；再者，在其他实施例中，主动连杆2可以一端固定在大喷口组件上，另一端铰接在轴向滑块21上；在其他实施例中，主动连杆2的至少一端也可以设置垂向长孔，轴向滑块21和/或大喷口组件上设置销轴，销轴沿垂向导向设置在垂向长孔内，用于避免过定位。
本发明中双动灭弧室传动结构的实施例3：
本实施例与实施例1的不同之处在于，实施例1中，中间连杆20与垂向滑块19的铰接点位于中间连杆20靠近从动连杆18的一侧，而本实施例中，中间连杆20与垂向滑块19的铰接点位于中间连杆20靠近主动连杆2的一侧。当然，根据传动需求，中间连杆20与垂向滑块 19的铰接点也可以位于中间连杆20的中点。
本发明中双动灭弧室传动结构的实施例4：
本实施例与实施例1的不同之处在于，实施例1中，主动连杆2为沿前后方向延伸的直杆，而本实施例中，主动连杆2为L形结构，一端与大喷口组件连接，另一端与轴向滑块21连接，适应主动连杆2两端连接点的垂向位置差。当然，在其他实施例中，主动连杆2也可以为倾斜连接在轴向滑块21与大喷口组件之间的直杆，由于轴向轨道的导向作用，主动连杆2的倾斜角度固定，与传动过程中需要产生转动的连杆相比，仍具有较好的受力改善作用。
以上所述，仅为本申请的较佳实施例，并不用以限制本申请，本申请的专利保护范围以权利要求书为准，凡是运用本申请的说明书及附图内容所作的等同结构变化，同理均应包含在本申请的保护范围内。

Claims (10)

  1. 双动灭弧室传动结构，包括：
    静端组件，包括静弧触头(17)，静弧触头(17)前后导向设置；
    动端组件，用于在操动机构的驱动下前后动作以实现分合闸；
    双动联动结构，用于在动端组件动作时带动静弧触头(17)动作；
    其特征在于，所述双动联动结构包括：
    T形导轨(1)，固定在静端组件的静支座(3)上，包括轴向轨道和垂向轨道；
    轴向轨道，沿前后方向延伸，其上导向装配有轴向滑块(21)；
    垂向轨道，垂直于轴向轨道延伸，其上导向装配有垂向滑块(19)；
    所述双动联动结构还包括主动连杆(2)、中间连杆(20)和从动连杆(18)；
    主动连杆(2)，连接在轴向滑块(21)与动端组件的大喷口组件之间，随大喷口组件同步运动；
    中间连杆(20)，两端分别与主动连杆(2)和从动连杆(18)铰接，两端之间的部位与垂向滑块(19)铰接；
    从动连杆(18)，远离中间连杆(20)的一端铰接在静弧触头(17)上。
  2. 根据权利要求1所述的双动灭弧室传动结构，其特征在于，所述轴向轨道上导向装配有轴向滑块(21)，所述主动连杆(2)连接在轴向滑块(21)上。
  3. 根据权利要求2所述的双动灭弧室传动结构，其特征在于，所述主动连杆(2)的两端分别与轴向滑块(21)和大喷口组件通过铰接的方式连接。
  4. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述中间连杆(20)与垂向滑块(19)的铰接点位于中间连杆(20)靠近从动连杆(18)的一侧。
  5. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述T形导轨(1)上设有至少三只固定耳(23)，固定耳(23)用于将T形导轨(1)固定到静支座(3)上；
    所述轴向轨道和垂向轨道上均设有固定耳(23)，所述轴向轨道上设有两只以上所述固定耳(23)。
  6. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述主动连杆(2)为沿前后方向延伸的直杆。
  7. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述轴向轨道具有分闸端和合闸端，分闸端和合闸端分别位于垂向轨道的前后两侧，分闸端靠近所述动端组件；
    灭弧室处于分闸状态时，主动连杆(2)的对应端运动至分闸端，灭弧室处于合闸状态时，主动连杆(2)的对应端运动至合闸端。
  8. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述垂向滑块(19)与中间连杆(20)的铰接点在分合闸过程中始终位于静弧触头(17)的轴线的下侧。
  9. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述轴向轨道的两端为封闭结构。
  10. 根据权利要求1或2或3所述的双动灭弧室传动结构，其特征在于，所述垂向轨道的一端对接在轴向轨道上，另一端为封闭结构。
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