WO2023017416A1 - 真空断路器 - Google Patents

真空断路器 Download PDF

Info

Publication number
WO2023017416A1
WO2023017416A1 PCT/IB2022/057417 IB2022057417W WO2023017416A1 WO 2023017416 A1 WO2023017416 A1 WO 2023017416A1 IB 2022057417 W IB2022057417 W IB 2022057417W WO 2023017416 A1 WO2023017416 A1 WO 2023017416A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
circuit breaker
vacuum
housing
vacuum interrupter
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/IB2022/057417
Other languages
English (en)
French (fr)
Inventor
张华夏
郑荣
陈建华
李兴伟
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.)
Eaton Electrical Ltd
Original Assignee
Eaton Electrical Ltd
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 Eaton Electrical Ltd filed Critical Eaton Electrical Ltd
Priority to EP22855620.5A priority Critical patent/EP4386802A4/en
Publication of WO2023017416A1 publication Critical patent/WO2023017416A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/502—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position the action of the contact pressure spring becoming active only after engagement of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
    • 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
    • H01H33/60—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
    • H01H2033/6667—Details concerning lever type driving rod 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
    • H01H33/027—Integrated apparatus for measuring current or voltage

Definitions

  • the utility model relates to the technical field of control and protection of electrical equipment, in particular to a vacuum circuit breaker. Background technique
  • circuit breaker In new energy wind power industry, the product requirement of low-voltage circuit breaker has been upgraded to the working voltage of AC1150V/1500V, also requires circuit breaker to possess the performance of high life-span simultaneously. In addition, in high-pollution industries such as coal mines and oil and gas, it is also hoped that circuit breaker products can achieve zero flashover to ensure the safety of operators, circuits and electrical equipment in flammable and explosive environments.
  • the utility model aims to provide a vacuum circuit breaker that can at least solve some of the above-mentioned technical problems.
  • a vacuum circuit breaker including an operating mechanism, the vacuum circuit breaker also includes a plurality of vacuum arc extinguishing modules, and the operating mechanism is connected to each vacuum arc extinguishing module by driving
  • the vacuum interrupter module includes: a housing; a vacuum interrupter housed in the housing and having fixed contacts and moving contacts oppositely arranged; a contact support assembly housed in the housing and connected to the The moving contact of the vacuum interrupter, wherein the operating mechanism is driven to connect the contact support assembly; the inner wall of the housing is adapted to the vacuum interrupter and the contact support assembly to form a Concavo-convex structure, and corresponding to the fixed contact, the movable contact and the contact support assembly, a connection opening is formed.
  • each vacuum interrupter module has a link mechanism connected to the contact support assembly, the operating mechanism drives the link mechanism connected to each vacuum interrupter module, and the connection of the housing
  • the opening includes a first connection opening through which the link mechanism passes.
  • the static contact of the vacuum interrupter is connected with a first connection terminal, and the connection opening of the housing includes a second connection opening aligned with the first connection terminal .
  • a coil is arranged at the first connecting terminal, the inner wall of the housing has a groove for accommodating the coil, and the second connection opening is formed at the bottom of the groove.
  • the moving contact of the vacuum interrupter is connected to a second terminal through a soft connection
  • the connection opening of the housing includes a first terminal aligned with the second terminal.
  • the inner wall of the housing is formed with a ring extending along the circumference of the housing, and the vacuum interrupter is surrounded by the ring.
  • the housing includes at least two shell parts that are detachably connected, and the concave-convex structure is surrounded by the at least two shell parts.
  • the vacuum interrupter module is prefabricated.
  • the contact support assembly includes: a bracket; a contact spring, which is supported by the bracket; a movable part, which is coupled to the contact spring and has a wear indicator; a rod connected to the movable member and connected at the end to the movable contact of the vacuum interrupter;
  • the position of the movable member relative to the connecting rod is arranged so that during the closing of the movable contact and the static contact
  • the position change of the wear indicating part can be identified when the moving contact and/or the static contact reach a predetermined value of wear thickness.
  • the movable part also has an installation indicator, and the installation indicator is far away from the bracket relative to the wear indicator.
  • Fig. 1 is a schematic diagram of a vacuum circuit breaker according to the present invention
  • Fig. 2 is a side view of the vacuum circuit breaker according to the utility model
  • Fig. 3 is an exploded schematic view of the vacuum circuit breaker according to the present invention.
  • Fig. 4 is a schematic diagram of the vacuum arc extinguishing module according to the present invention.
  • Fig. 5 is a side view of the vacuum interrupter module according to the present invention.
  • Fig. 6 is an exploded schematic view of the vacuum interrupter module according to the present invention.
  • FIG. 7 is an exploded schematic view of the contact support assembly according to the present invention.
  • FIGS. 1 to 3 show schematic diagrams of a vacuum circuit breaker 1 according to the present invention.
  • a vacuum circuit breaker 1 includes an operating mechanism 2 and a plurality of vacuum interrupter modules 3 driven by the operating mechanism 2 to realize opening and closing.
  • Three vacuum interrupter modules 3 are shown in the figure, but those skilled in the art will understand that the vacuum interrupter modules 3 are prefabricated and can be installed in the vacuum circuit breaker When installing on site in the working environment, a desired number of prefabricated vacuum interrupter modules 3 are connected to the operating mechanism 2 in parallel according to needs, and the number can be 2 or more, for example 4, 5, 6 or more.
  • the main shaft 21 of the operating mechanism 2 can be operated to rotate around its own central axis, thereby driving the linkage mechanism 8 of each vacuum arc extinguishing module 3 connected to the main shaft 21 to drive each vacuum arc extinguishing
  • the dynamic and static contacts of chamber 3 are closed or separated.
  • the main shaft 21 of the operating mechanism 2 is covered with a crank arm 22, and the rotation of the main shaft 21 can drive the crank arm 22 to rotate synchronously.
  • the crank arm 22 is pivotally connected to the first rod 81 of the link mechanism 8, the first rod 81 is pivotally connected to the second rod 82, the second rod 82 is pivotally connected to the third rod 83, and the third rod 83 is pivoted from the lower part Connected to the contact support assembly 7 of the vacuum interrupter 6 (will be described in detail below), so as to control the separation or closure of the dynamic and static contacts in the vacuum interrupter 6 .
  • the structure of the operating mechanism 2 and its control on the main shaft 21 can refer to the existing technology, and will not be repeated here.
  • FIG. 4 to FIG. 6 schematically show an example of a vacuum interrupter module 3 according to the present invention.
  • the vacuum interrupter 6 and the contact support assembly 7 are packaged in the housing 4, and the inner wall of the housing 4 is formed with a concave-convex structure to fit the accommodated components.
  • the housing 4 is assembled from two or more shell parts.
  • the case 4 composed of two shell parts, namely the first shell part 41 and the second shell part 42 is taken as an example for description.
  • the first shell part 41 and the second shell part 42 can also be regarded as a front shell part and a rear shell part. As shown in FIG. 5, the first shell part 41 and the second shell part 42 respectively form corresponding assembly holes 412, 424 for easy assembly. After the first shell part 41 and the second shell part 42 are spliced together, the first shell part 41 and the second shell part 42 are assembled together by inserting connectors such as bolts or pins in the aligned assembly holes 412, 424. .
  • the first shell part 41 and the second shell part 42 can be integrally formed of plastic materials.
  • the first shell part and the second shell part can be formed with a suitable concave-convex positioning structure, for example, a protrusion is formed on the first shell part, while the second shell part The shell portion forms a recess capable of receiving the protrusion.
  • a protrusion is formed on the first shell part
  • the second shell part forms a recess capable of receiving the protrusion.
  • the vacuum interrupter 6 and the contact support assembly 7 are accommodated in the housing 4.
  • the vacuum interrupter 6 includes a housing and moving contacts and static contacts (not shown in the figure) accommodated in the housing.
  • the contact support assembly 7 is connected to the moving contact, and the operating mechanism 2 can operate the contact support assembly 7 through the link mechanism 8, and then drive the moving contact closer to or away from the fixed contact.
  • the first shell part 41 of the housing 4 is formed with a first connection opening 411 at a position corresponding to the contact support assembly 7, for the third rod 83 of the link mechanism 8 to pass through and connect to the contact support assembly 7.
  • FIG. 7 shows an example of a contact support assembly 7.
  • the connecting shaft 71 is installed on the bracket 72.
  • the connecting shaft 71 is pivotally connected to the third rod 83 of the link mechanism 8.
  • the sleeve 77 is supported on the bracket 72, and a contact spring 78 is arranged in the sleeve 77.
  • the contact spring 78 supports the movable part 75, and provides the movable part 75 with a thrust in the direction away from the bracket 72 (ie, toward the moving contact in the vacuum interrupter).
  • the connecting rod 73 passes through the bracket 72, the contact spring 78 and the movable part 75, and the connecting rod 73 is connected with the movable part 75.
  • the connecting rod 73 and the movable part 75 cannot move relative to each other, or at least the movable part 75 cannot move along the axial direction of the connecting rod 73, so that the movement of the movable part 75 (under the thrust of the contact spring 78) drives the connecting rod 75.
  • the rods 73 move synchronously.
  • One end of the connecting rod 73 protrudes from the side of the bracket 72 facing away from the sleeve 77, and a flange 732 is provided at this end.
  • the size of the flange 732 is larger than the opening of the support 72 for the connecting rod 73 to pass through, which can prevent the connecting rod 73 from deviating from the support 72 during the movement process.
  • the other end of the connecting rod 73 protrudes from the side of the movable member 75 facing away from the bracket 72, and serves as an end 731 for connecting to the moving contact in the vacuum interrupter 6.
  • the connecting rod 73 is a screw rod
  • the flange 732 is a nut threadedly engaged on the connecting rod 73.
  • the movable part 75 adaptively has an internal thread that cooperates with the external thread of the screw rod, so that during the assembly process, the movable part can adjust its position along the axial direction of the connecting rod 73, and this adjustment is continuous, and can be adjusted to a suitable position The rear is positioned relative to the connecting rod 73.
  • the movable part can be sleeved on the connecting rod in a tight fit.
  • An installation indicating portion 751 and a wear indicating portion 752 are formed on the outer periphery of the movable member 75.
  • the installation indicating portion 751 and the wear indicating portion 752 are each configured as an indicating line extending along the circumferential direction of the movable member 75.
  • the installation indicating part 751 is closer to the end 731 of the connecting rod 73 for connecting the moving contact than the wear indicating part 752.
  • the installation indicating part 751 and the wear indicating part 752 can have other forms, such as pattern identification, text identification, scale identification, color identification, or a combination of at least two of these forms.
  • the connecting rod 73 is also sleeved with an insulating sleeve 79.
  • the insulating sleeve 79 can be sleeved on the connecting rod 73 by using a heat-shrinkable tube, and passes through the bracket 72 and the contact spring 78.
  • the insulating sleeve can be sleeved on the connecting rod 73 and a radially extending flange is formed near one end, the insulating sleeve passes through the bracket 72 and the contact spring 78, and extends radially The flange of the bracket is dropped on the bracket, so that the bracket supports the insulating sleeve.
  • a first insulating pad 74 can also be provided between the side of the bracket 72 facing away from the sleeve 77 and the flange 732 on the connecting rod 73, and the first insulating pad 74 is sleeved on the connecting rod 73.
  • a second insulating pad 76 may be arranged on the side of the movable member 75 facing the contact connection end 421 of the connecting rod 73, and the second insulating pad 76 is sleeved on the connecting rod 73.
  • the movable part 75 makes the installation indicator 751 away from the cover due to the larger stroke of the connecting rod 73
  • the moving contacts of the vacuum interrupter 6 are connected and driven by the contact support assembly 7, while the fixed contacts are connected to the first terminal 61, and the coil 5 is arranged at the first terminal 61 .
  • the coil 5 surrounds a part of the first terminal 61, and this part of the first terminal 61 is close to the inner wall of the second case part 42 of the case 4.
  • the housing 4 is, for example, formed with a second connection opening 421 at a position corresponding to the first connection terminal 61 on the second case part 42, for cables to pass through and be connected to the first connection terminal 61.
  • the second shell portion 42 of the housing 4 is formed with a groove 425 on the inner wall to accommodate the coil.
  • the shape of the groove can be adapted to the shape of the coil 5, so that the coil 5 can be more firmly assembled in the housing 4.
  • the second connection opening 421 is correspondingly formed at the bottom of the groove 425.
  • the vacuum interrupter 6 is also connected with the second terminal (not shown in the figure) through the soft connection 62 with the movable contact.
  • the flexible connection 62 can be sleeved on the connecting rod 73 of the contact support assembly 7.
  • the housing 4 is, for example, formed with a third connection opening 422 on the second shell part 42 at a position corresponding to the soft connection, for the second terminal or cable to pass through and be connected to the soft connection 62.
  • the second shell portion 42 may be formed with a protrusion 426 protruding toward the soft connection 63 at a position corresponding to the third connection opening 422, the third connection opening 422 penetrates the protrusion 426, and the third connection opening 422 penetrates the protrusion 426, and the second Two connection terminals can be placed in the third connection opening 422 and connected to the soft connection 62 .
  • the inner wall of the housing 4 also integrally forms a raised ring 423, which extends along the circumference of the housing 4.
  • the side of the ring 423 towards the vacuum interrupter 6 is the outer surface of the vacuum interrupter. Concave curved surface adapted to the surrounding surface.
  • the vacuum interrupter is surrounded and clamped by a ring so as to be restricted from lateral movement.
  • the ring can be formed after the shell parts of the housing 4 are assembled together.
  • each of the first case portion 41 and the second case portion 42 is integrally formed with a half circle, and they are assembled to form a full circle.
  • the utility model prepackages a series of parts such as the vacuum interrupter and the support assembly in the frame-type shell to prefabricate a single small-volume vacuum interrupter module unit, while retaining the zero-flying of the vacuum interrupter characteristics of the arc.
  • Each modular unit is small in size and neat in appearance. After the required number of vacuum interrupter module units are connected in parallel to one operating mechanism, the overall structure of the vacuum circuit breaker is compact and takes up little space, and because the vacuum interrupter module units are prefabricated units, the assembly of the field and the operating mechanism is also saved. Time-saving and labor-saving, the safety performance is also very good.

Landscapes

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

Abstract

本实用新型涉及真空断路器。真空断路器包括操作机构（2），所述真空断路器（1）还包括多个真空灭弧模块（3），所述操作机构（2）驱动连接至各真空灭弧模块（3），所述真空灭弧模块（3）包括：外壳（4）；真空灭弧室（6），其容纳在所述外壳（4）中并具有相对设置的静触头和动触头；触头支撑组件（7），容纳在所述外壳（4）中并连接至所述真空灭弧室（6）的所述动触头，其中所述操作机构（2）驱动连接所述触头支撑组件（7)；所述外壳（4）的内壁适配于所述真空灭弧室（6）和所述触头支撑组件（7）而形成有凹凸结构，并对应于所述静触头、动触头和触头支撑组件（7）而形成有连接开口。

Description

真空断 路器 技术领域
[0001] 本实用新型涉及电气设备的控制和保护技术领域，尤其涉及真空断路器。 背景技术
[0002] 在新能源风电行业,低压断路器的产品需求已经升级到 AC1150V/1500V的工作电 压，同时还要求断路器具备高寿命的性能。此外，在煤矿、油气等高污染行业，还希望断路器 产品能做到零飞弧,确保在易燃易爆的环境中能保护作业人员、电路和用电设备的安全。
[0003] 因此，行业内对高寿命、零飞弧的断路器产品存在需求，同时希望这种断路器产品 具有尽量小的占地面积。 实用新型内容
[0004] 本实用新型旨在提供一种至少能解决上述部分技术问题的真空断路器。
[0005] 根据本实用新型的一个方面，提供了一种真空断路器,包括操作机构，所述真空断 路器还包括多个真空灭弧模块 ，所述操作机构驱动连接至各真空灭弧模块,所述真空灭弧 模块包括:外壳;真空灭弧室 ,其容纳在所述外壳中并具有相对设置的静触头和动触头 ;触 头支撑组件，容纳在所述外壳中并连接至所述真空灭弧室的所述动触头，其中所述操作机 构驱动连接所述触头支撑组件;所述外壳的内壁适配于所述真空灭弧室和所述触头支撑组 件而形成有凹凸结构，并对应于所述静触头、动触头和触头支撑组件而形成有连接开口。
[0006] 在一些实施例中，各真空灭弧模块具有连接至触头支撑组件的连杆机构，所述操 作机构驱动连接至各真空灭弧模块的连杆机构,所述外壳的所述连接开口包括供所述连杆 机构穿过的第一连接开口。
[0007] 在一些实施例中，所述真空灭弧室的所述静触头连接有第一接线端子，所述外壳 的所述连接开口包括对准所述第一接线端子的第二连接开口。
[0008] 在一些实施例中，所述第一接线端子处布置有线圈，所述外壳的内壁具有容纳所 述线圈的凹槽，所述第二连接开口形成在所述凹槽的槽底。
[0009] 在一些实施例中，所述真空灭弧室的所述动触头通过软连接连接有第二接线端 子 ,所述外壳的所述连接开口包括对准所述第二接线端子的第三连接开口。
[0010] 在一些实施例中，所述外壳的内壁形成有沿所述外壳的周向延伸的环圈，所述真 空灭弧室由所述环圈包围。
[001 1] 在一些实施例中，所述外壳包括可拆卸连接的至少两个壳部分，所述凹凸结构由 所述至少两个壳部分围设而成。
[0012] 在一些实施例中，所述真空灭弧模块是预制的。
[0013] 在一些实施例中，所述触头支撑组件包括:支架;触头弹簧 ,其由所述支架支撑;活 动件，其随动接合至所述触头弹簧并具有磨损指示部 ;连杆 ,其连接至所述活动件并在端部 连接至所述真空灭弧室的所述动触头；
[0014] 所述活动件相对于所述连杆的位置布置成在所述动触头与所述静触头合闸期间 当所述动触头和/或所述静触头达到磨损厚度预定值时所述磨损指示部的位置变化能被识 别。
[0015] 在一些实施例中，所述活动件还具有安装指示部，所述安装指示部相对于所述磨 损指示部远离所述支架。
[0016] 本实用新型的其它特征和优点的一部分将会是本领域技术人员在阅读本申请后 显见的，另一部分将在下文的具体实施方式中结合附图描述。 附图说明
[0017] 以下，结合附图来详细说明本实用新型的实施例,其中：
[0018] 图 1是根据本实用新型的真空断路器的示意图；
[0019] 图 2是根据本实用新型的真空断路器的侧视图；
[0020] 图 3是根据本实用新型的真空断路器的分解示意图；
[0021] 图 4是根据本实用新型的真空灭弧模块的示意图；
[0022] 图 5是根据本实用新型的真空灭弧模块的侧视图；
[0023] 图 6是根据本实用新型的真空灭弧模块的分解示意图；
[0024] 图 7是根据本实用新型的触头支撑组件的分解示意图。
[0025] 附图标记说明
[0026] 1、真空断路器; 2、操作机构; 21、主轴; 22、拐臂； 3、真空灭弧模块; 4、外壳; 41、第一 壳部分; 411、第一连接开口； 412、组装孔; 42、第二壳部分; 421、第二连接开口； 422、第三连 接开口； 423、环圈； 424、组装孔; 425、凹槽; 426、凸部； 5、线圈； 6、真空灭弧室； 61、第一接线 端子; 62、软连接; 7、触头支撑组件; 71、连接轴; 72、支架; 73、连杆; 731、端部；732、凸缘; 74、 第一绝缘垫; 75、活动件; 751、安装指示部； 752、磨损指示部; 76、第二绝缘垫； 77、套筒; 78、 触头弹簧; 79、绝缘套; 8、连杆机构; 81、第一杆; 82、第二杆; 83、第三杆。 具体实施方式
[0027] 现参考附图，详细说明本实用新型所公开的真空断路器的示意性方案。尽管提供 附图是为了呈现本实用新型 的一些实施方式，但附图不必按具体实施方案的尺寸绘制，并 且某些特征可被放大、移除或局剖以更好地示出和解释本实用新型的公开内容。附图中的 部分构件可在不影响技术效果的前提下根据实际需求进行位置调整。在说明书中出现的短 语 “在附图中 ”或类似用语不必参考所有附图或示例。
[0028] 在下文中被用于描述附图的某些方向性术语，例如 “内”、 “外”、 “上方”、 “下方 ”和 其它方向性术语，将被理解为具有其正常含义并且指正常看附图时所涉及的那些方向 。除 另有指明，本说明书所述方向性术语基本按照本领域技术人员所理解的常规方向。
[0029] 本实用新型中所使用的术语 “第一”、 “第一个”、 “第二”、 “第二个 ”及其类似术语, 在本实用新型中并不表示任何顺 序、数量或重要性，而是用于将一个部件与其它部件进行 区分。
[0030] 图 1至图 3示出了根据本实用新型的真空断路器 1的示意图。如图所示，真空断路器 1包括操作机构 2和由操作机构 2驱动实现分合闸的多个真空灭弧模块 3。图中示出了 3个真 空灭弧模块 3 ,但本领域技术人员将理解,真空灭弧模块 3是预制的，并可以在真空断路器的 工作环境中现场安装时 ，根据需要而将希望数量的预制真空灭弧模块 3并联至操作机构 2 , 数量可以是 2个或更多，例如 4个、 5个、 6个或更多。
[0031] 参考图 1和图 3 ,操作机构 2的主轴 21可被操作绕自身中心轴线转动,从而驱动连接 至主轴 21的各真空灭弧模块 3的连杆机构 8 ,以带动各真空灭弧室 3的动、静触头闭合或分 离。在所示出的实施例中，操作机构 2的主轴 21上套设有拐臂 22 ,主轴 21的转动可带动拐臂 22同步转动。拐臂 22枢转连接连杆机构 8的第一杆 81 ,该第一杆 81枢转连接第二杆 82 ,第二 杆 82枢转连接第三杆 83 ,而第三杆 83从下部枢转连接真空灭弧室 6的触头支撑组件 7（将在 下面详细描述），从而实现对真空灭弧室 6内动、静触头分离或闭合的操控。操作机构 2的结 构及其对主轴 21的控制可参考现有的技术，在此不做赘述。
[0032] 图 4至图 6示意性示出了根据本实用新型的一个真空灭弧模块 3的示例。如图所示, 真空灭弧模块 3中，真空灭弧室 6和触头支撑组件 7被封装在外壳 4中，外壳 4的内壁为了适配 所容纳的部件而形成有凹 凸结构。为了便于安装真空灭弧室和触头支撑组件 7 ,外壳 4由两 个或更多个壳部分组装而成 。在所示出的实施例中，以由两个壳部分，即第一壳部分 41 和 第二壳部分 42组成的外壳 4为例进行描述。按照如图 1和图 3所示真空断路器 1和真空灭弧模 块正常放置的方向为基准，第一壳部分 41和第二壳部分 42可以也可以被视为前壳部分和后 壳部分。如图 5所示，第一壳部分 41和第二壳部分 42为了便于组装而各自形成对应的组装孔 412、 424。将第一壳部分 41和第二壳部分 42拼接在一起之后,通过将连接件例如螺栓或销 插接在对齐的组装孔 412.424中而将第一壳部分 41与第二壳部分 42组装在一起。
[0033] 第一壳部分 41和第二壳部分 42各自可选用塑料材质一体成型。为了便于将第一壳 部分 41和第二壳部分 42正确组装,第一壳部分与第二壳部分可以形成有适配的凹凸定位结 构，例如在第一壳部分上形成突出部，而第二壳部分形成能容纳该突出部的凹部。反之，突 出部也可以形成在第二壳部分上，并将凹部形成在第一壳部分上。
[0034] 真空灭弧室 6和触头支撑组件 7容纳在外壳 4中。真空灭弧室 6包括壳体和容纳在壳 体中的动触头、静触头（图中未示出）。触头支撑组件 7连接至动触头，而操作机构 2通过连杆 机构 8可操作触头支撑组件 7 ,进而驱动动触头靠近或远离静触头。外壳 4的例如第一壳部分 41在对应于触头支撑组件 7的位置形成有第一连接开口 411 ,以供连杆机构 8的第三杆 83穿 过并连接触头支撑组件 7。
[0035] 图 7示出了触头支撑组件 7的一个示例。如图所示,触头支撑组件 7 中，连接轴 71安 装在支架 72上。连接轴 71枢转连接连杆机构 8的第三杆 83。套筒 77支撑在支架 72上,在套筒 77内布置有触头弹簧 78。触头弹簧 78支撑着活动件 75 ,并向活动件 75提供背向支架 72方向 （即指向真空灭弧室内的动触头的方向）的推力。连杆 73穿过支架 72、触头弹簧 78 和活动件 75 ,并且连杆 73与活动件 75连接。在组装后，连杆 73与活动件 75不可相对于运动，或者至少 活动件 75不能沿连杆 73的轴向运动，使得活动件 75（在触头弹簧 78的推力作用下）的运动带 动连杆 73同步运动。
[0036] 连杆 73的一端伸出支架 72的背向套筒 77的一侧，并在该端设有凸缘 732。凸缘 732 的尺寸大于支架 72的供连杆 73穿过的开孔,可以防止连杆 73运动过程中从支架 72脱出。连 杆 73的另一端从活动件 75的背向支架 72的一侧伸出，作为用于连接至真空灭弧室 6内的动 触头的端部 731。
[0037] 在一个实施例中，连杆 73选用螺杆，而凸缘 732选用螺纹接合在连杆 73上的螺母。 活动件 75适应性地具有与螺杆的外螺纹配合的内螺纹，这样组装过程中，活动件可以沿连 杆 73的轴向调整位置，而且这种调整是连续的，并可在调整到合适位置后相对于连杆 73定 位。在又一个实施例中，活动件可以是紧配合地套设在连杆上。
[0038] 活动件 75的外周形成有安装指示部 751和磨损指示部 752。在所示出的实施例中, 安装指示部 751和磨损指示部 752各自被构造成沿活动件 75 周向延伸的指示线。安装指示 部 751相比于磨损指示部 752更靠近连杆 73 的用于连接动触头的端部 731。在其他实施例 中，安装指示部 751和磨损指示部 752可以有其他形态,例如图案标识、文字标识、刻度标识、 颜色标识或这些形态中至少两者的组合等。
[0039] 在连杆 73上还套设有绝缘套 79。在所示出的实施例中，绝缘套 79可选用热缩管套 设在连杆 73上，并穿过支架 72和触头弹簧 78。在其他的实施例中，绝缘套可以套设在连杆 73 上并在靠近一端的位置形成有径 向延伸的凸缘，该绝缘套穿过支架 72和触头弹簧 78 ,并以 径向延伸的凸缘落置在支架上 ，使得支架支撑该绝缘套。在支架 72的背向套筒 77的一侧与 连杆 73上的凸缘 732之间还可以设有第一绝缘垫 74 ,该第一绝缘垫 74套设在连杆 73上。另 外，在活动件 75的朝向连杆 73的触头连接端 421的侧面上可以布置有第二绝缘垫 76 ,该第二 绝缘垫 76套设在连杆 73上 o
[0040] 在初始正常装配的情况下（真空灭弧室内的动、静触头未磨损），真空灭弧室内的 动触头与静触头闭合时,活动件 75的安装指示部 751露出在套筒 77外,操作人员基于可看到 或检测到安装指示部 751而判断触头支撑组件 7正确安装，进而确定了触头弹簧的运动行 程。此时，磨损指示部 752因位于套筒 77内而不能被操作人员看到或检测到。
[0041] 而一旦动、静触头出现磨损，真空灭弧室 6内的动触头与静触头闭合时，活动件 75 因连杆 73的更大的行程而使得安装指示部 751远离套筒 77 的上边缘，同时磨损指示部 752 露出在套筒 77外，操作人员基于磨损指示部 752能够被看到或检测到而识别出磨损指示部 （相对于套筒）的位置改变，从而可以判断动、静触头的磨损厚度已经达到预定值。
[0042] 如上所述，真空灭弧室 6的动触头由触头支撑组件 7连接并驱动，而静触头连接至 第一接线端子 61 ,并在第一接线端子 61处布置有线圈 5。如图 6所示，线圈 5围绕第一接线端 子 61的一部分，并且第一接线端子 61的该部分靠近外壳 4的第二壳部分 42的内壁。外壳 4例 如在第二壳部分 42上在对应于第一接线端子 61的位置形成有第二连接开口 421 ,以供线缆 穿过并连接至第一接线端子 61。
[0043] 如图 6所示，适配于围绕第一接线端子 61的线圈 5 ,外壳 4的第二壳部分 42在内壁形 成有凹槽 425,以容纳该线圈。该凹槽的形状可以与线圈 5的形状相适应，以使线圈 5更为稳 固地装配在外壳 4内。第二连接开口 421对应地形成在凹槽 425的槽底。
[0044] 除了以静触头连接至第一接线端子，真空灭弧室 6还以动触头通过软连接 62与第 二接线端子 （图中未示出）连接。软连接 62可以套在触头支撑组件 7的连杆 73上。外壳 4例如 在第二壳部分 42上在对应于软连接的位置形成有第三连接开口 422 ,以供第二接线端子或 线缆穿过并连接至软连接 62。在所示出的实施例中，第二壳部分 42在对应于第三连接开口 422 的位置可以形成有朝向软连接 63突出的凸部 426,第三连接开口 422贯穿该凸部 426 ,而 第二接线端子可以安置于该第三连接开口 422中并与软连接 62相连接。
[0045] 为了将真空灭弧室 6稳定保持在外壳 4内，外壳 4的内壁还一体形成凸起的环圈 423 ,该环圈沿外壳 4的周向延伸。环圈 423的朝向真空灭弧室 6的侧面为与真空灭弧室的外 周面适配的凹弧面。真空灭弧室被环圈包围并夹持，以被限制沿横向的运动。根据所示出的 实施例，环圈可以是外壳 4的多个壳部分组装在一起之后围成的。例如，如图 6所示,第一壳 部分 41和第二壳部分 42各自一体形成有半圈，并在将它们组装后围成一整个环圈。
[0046] 本实用新型通过将真空灭弧室连同支撑组件等一系列部预封装在框架式的外壳 中，以预制出单个的小体积真空灭弧模块单元，同时保留了真空灭弧室零飞弧的特点。每个 模块单元的体积较小且外形较为整洁。将所需数量的真空灭弧模块单元并联至一个操作机 构之后，真空断路器的整体结构紧凑且占用空间很小，而且由于真空灭弧模块单元是预制 单元，所以现场与操作机构的组装也省时省力，安全性能也很好。
[0047] 应当理解，虽然本说明书是按照各个实施例描述的，但并非每个实施例仅包含一 个独立的技术方案,说明书的这种叙述方式仅 仅是为清楚起见，本领域技术人员应当将说 明书作为一个整体 ，各实施例中的技术方案也可以经适当组合 ,形成本领域技术人员可以 理解的其它实施方式。
[0048] 以上所述仅为本实用新型示意性的具体实施方式，并非用以限定本实用新型的范 围。任何本领域的技术人员，在不脱离本实用新型的构思和原则的前提下所作的等同变化、 修改与结合,均应属于本实用新型保护的范围。

Claims

1 .一种真空断路器,包括操作机构 (2) ,其特征在于，所述真空断路器⑴还包括多个真 空灭弧模块 (3)，所述操作机构 (2)驱动连接至各真空灭弧模块 (3)，所述真空灭弧模块 (3) 包括： 外壳⑷ ； 真空灭弧室⑹ ，其容纳在所述外壳 ⑷中并具有相对设置的静触头和动触头； 触头支撑组件 (7) ,容纳在所述外壳⑷中并连接至所述真空灭弧室 (6)的所述动触头， 其中所述操作机构 (2)驱动连接所述触头支撑组件 (7)； 所述外壳 (4)的内壁适配于所述真空灭弧室⑹和所述触头支撑组件 (7)而形成有凹凸 结构,并对应于所述静触头、动触头和触头支撑组件 (7)而形成有连接开口。
2 .根据权利要求 1所述的真空断路器，其特征在于，各真空灭弧模块 (3)具有连接至触 头支撑组件 (7)的连杆机构⑻，所述操作机构 ⑵驱动连接至各真空灭弧模块⑶的连杆机 构⑻ ，所述外壳 ⑷的所述连接开口包括供所述连杆机构⑻穿过的第一连接开口 (411) o
3 .根据权利要求 1所述的真空断路器，其特征在于，所述真空灭弧室 (6)的所述静触头 连接有第一接线端子 (61) ,所述外壳 (4)的所述连接开口包括对准所述第一接线端子 (61) 的第二连接开口 (421) o
4.根据权利要求 3所述的真空断路器 ,其特征在于，所述第一接线端子 (61)处布置有线 圈⑸ ，所述外壳⑷的内壁具有容纳所述线圈⑸ 的凹槽 (425) ,所述第二连接开口 (421)形 成在所述凹槽 (425)的槽底。
5 .根据权利要求 1所述的真空断路器，其特征在于，所述真空灭弧室 (6)的所述动触头 通过软连接 (62)连接有第二接线端子，所述外壳 (4)的所述连接开口包括对准所述第二接 线端子的第三连接开口 (422) o
6 .根据权利要求 1所述的真空断路器，其特征在于，所述外壳 (4)的内壁形成有沿所述 外壳 ⑷的周向延伸的环圈 (423)，所述真空灭弧室 ⑹由所述环圈 (423)包围。
7 .根据权利要求 1所述的真空断路器，其特征在于，所述外壳 (4)包括可拆卸连接的至 少两个壳部分 ,所述凹凸结构由所述至少两个壳部分围设而成。
8.根据权利要求 1所述的真空断路器，其特征在于，所述真空灭弧模块 ⑶是预制的。
9 .根据权利要求 1所述的真空断路器，其特征在于，所述触头支撑组件⑺包括： 支架 (72)； 触头弹簧 (78)，其由所述支架 (72)支撑； 活动件 (75) ,其随动接合至所述触头弹簧 (78)并具有磨损指示部 (752)； 连杆 (73) ,其连接至所述活动件 (75)并在端部 (731)连接至所述真空灭弧室 (6)的所述 动触头； 所述活动件 (75)相对于所述连杆 (73)的位置布置成在所述动触头与所述静触头合闸 期间当所述动触头和 /或所述静触头达到磨损厚度预定值时所述磨损指示部 (752)的位置 变化能被识别。
10.根据权利要求 9所述的真空断路器，其特征在于，所述活动件 (75)还具有安装指示 部 (751)，所述安装指示部 (751)相对于所述磨损指示部 (752)远离所述支架 (72)。
6
PCT/IB2022/057417 2021-08-09 2022-08-09 真空断路器 Ceased WO2023017416A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22855620.5A EP4386802A4 (en) 2021-08-09 2022-08-09 VACUUM CIRCUIT BREAKER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202121842548.2 2021-08-09
CN202121842548.2U CN215988571U (zh) 2021-08-09 2021-08-09 真空断路器

Publications (1)

Publication Number Publication Date
WO2023017416A1 true WO2023017416A1 (zh) 2023-02-16

Family

ID=80514239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2022/057417 Ceased WO2023017416A1 (zh) 2021-08-09 2022-08-09 真空断路器

Country Status (3)

Country Link
EP (1) EP4386802A4 (zh)
CN (1) CN215988571U (zh)
WO (1) WO2023017416A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117393368A (zh) * 2023-11-17 2024-01-12 广东电网有限责任公司广州供电局 触头拉开装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215988577U (zh) * 2021-08-09 2022-03-08 伊顿电气有限公司 触头支撑组件、真空灭弧组件和真空断路器
CN215988571U (zh) * 2021-08-09 2022-03-08 伊顿电气有限公司 真空断路器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2839193A1 (fr) * 2002-04-24 2003-10-31 Alstom Dispositif interrupteur a haute tension a coupure mixte par vide et gaz
CN201242971Y (zh) * 2008-04-24 2009-05-20 南京因泰莱配电自动化设备有限公司 一种24kV户外柱上真空断路器
CN111276361A (zh) * 2020-03-25 2020-06-12 南通泰富电器制造有限公司 一种户内真空断路器及方法
CN112259409A (zh) * 2020-09-17 2021-01-22 平高集团有限公司 真空灭弧室、真空断路器及真空断路器分合闸控制方法
CN213277930U (zh) * 2020-11-04 2021-05-25 浙江常有电气有限公司 一种环保气体绝缘断路器
CN215988571U (zh) * 2021-08-09 2022-03-08 伊顿电气有限公司 真空断路器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20060051A1 (it) * 2006-10-06 2008-04-07 Abb Service S Rl Interruttore di bassa tensione con poli intercambiabili di tipo sigillato
CN201966123U (zh) * 2011-01-31 2011-09-07 常熟开关制造有限公司(原常熟开关厂） 具有助力装置的真空万能式断路器
US9633808B2 (en) * 2014-10-06 2017-04-25 Eaton Corporation Electrical interruption apparatus with wear indicator
CN105374622A (zh) * 2015-12-23 2016-03-02 戴顿（重庆）高压开关有限公司 绝缘拉杆、具有该绝缘拉杆的真空断路器以及监测该真空断路器动静触头磨损量的方法
CN106128850A (zh) * 2016-08-24 2016-11-16 厦门普力维电气科技有限公司 一种户外高压固封极柱或重合器
US11875956B2 (en) * 2019-02-18 2024-01-16 Ls Electric Co., Ltd. Contact point monitoring device for vacuum circuit breaker, and vacuum circuit breaker comprising same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2839193A1 (fr) * 2002-04-24 2003-10-31 Alstom Dispositif interrupteur a haute tension a coupure mixte par vide et gaz
CN201242971Y (zh) * 2008-04-24 2009-05-20 南京因泰莱配电自动化设备有限公司 一种24kV户外柱上真空断路器
CN111276361A (zh) * 2020-03-25 2020-06-12 南通泰富电器制造有限公司 一种户内真空断路器及方法
CN112259409A (zh) * 2020-09-17 2021-01-22 平高集团有限公司 真空灭弧室、真空断路器及真空断路器分合闸控制方法
CN213277930U (zh) * 2020-11-04 2021-05-25 浙江常有电气有限公司 一种环保气体绝缘断路器
CN215988571U (zh) * 2021-08-09 2022-03-08 伊顿电气有限公司 真空断路器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4386802A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117393368A (zh) * 2023-11-17 2024-01-12 广东电网有限责任公司广州供电局 触头拉开装置

Also Published As

Publication number Publication date
CN215988571U (zh) 2022-03-08
EP4386802A4 (en) 2025-08-13
EP4386802A1 (en) 2024-06-19

Similar Documents

Publication Publication Date Title
WO2023017416A1 (zh) 真空断路器
BRPI0714749A2 (pt) comutador a vÁcuo
EP1615309A2 (en) Switchgear
WO2023017420A1 (zh) 触头支撑组件、真空灭弧组件和真空断路器
CN107863269B (zh) 一种超小型气体密度继电器
CN1220234C (zh) 一种多极低压双断点塑壳断路器
CN103368095B (zh) 电气装置及开关设备
CN101852359B (zh) 一种灯具结构
CN116613599A (zh) 变电站一次设备用多功能接线连接装置
CN101258663B (zh) 带有封装在由耐火材料制成的分离式封壳中的电气设备的致动器
CN223206201U (zh) 一种断路器
CN108869201A (zh) 防雷装置和风力发电机组
EP1906420A3 (en) Rotary switch
CN218896591U (zh) 一种具有双重温控功能的液体膨胀式温控装置
US11387059B2 (en) High voltage vertical break disconnect switch with planetary gear reduction switch drive mechanism
CN101452791A (zh) 户外高压隔离开关的电连接装置
CN109887794A (zh) 一种翘板式防爆照明开关
AU2019339127B2 (en) Switching assembly, switching mechanism and gas cooker
BRPI0704878B1 (pt) Interruptor para circuito de baixa tensão com pólos intercambiáveis
CN220381251U (zh) 刀闸状态检测装置
CN214119753U (zh) 一种防爆灯具
CN116013715B (zh) 自动转换开关电器的触头系统
CN201126791Y (zh) 一种户外高压隔离开关的电连接装置
CN209029290U (zh) 充气柜负荷开关
CN213661752U (zh) 防爆热成像摄像机

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: 22855620

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202317087417

Country of ref document: IN

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112023027730

Country of ref document: BR

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022855620

Country of ref document: EP

Effective date: 20240311

ENP Entry into the national phase

Ref document number: 112023027730

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20231228