WO2014019303A1 - 户外真空断路器 - Google Patents

户外真空断路器 Download PDF

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Publication number
WO2014019303A1
WO2014019303A1 PCT/CN2012/085245 CN2012085245W WO2014019303A1 WO 2014019303 A1 WO2014019303 A1 WO 2014019303A1 CN 2012085245 W CN2012085245 W CN 2012085245W WO 2014019303 A1 WO2014019303 A1 WO 2014019303A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
frame
swing arm
circuit breaker
spring
Prior art date
Application number
PCT/CN2012/085245
Other languages
English (en)
French (fr)
Inventor
潘永成
樊建荣
黄宝富
欧林龙
Original Assignee
日升集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201210268153.5A external-priority patent/CN102789913B/zh
Priority claimed from CN201210266523.1A external-priority patent/CN102800522B/zh
Application filed by 日升集团有限公司 filed Critical 日升集团有限公司
Priority to JP2015600058U priority Critical patent/JP3198725U/ja
Priority to DE201221000282 priority patent/DE212012000282U1/de
Publication of WO2014019303A1 publication Critical patent/WO2014019303A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/666Operating arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005Charging means
    • H01H3/3015Charging means using cam devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/662Housings or protective screens
    • H01H33/66207Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623Details relating to the encasing or the outside layers of the vacuum switch housings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052Linear spring motors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/022Details particular to three-phase circuit breakers

Definitions

  • the invention relates to a power electrical device, in particular to an outdoor vacuum circuit breaker.
  • Outdoor vacuum circuit breakers are commonly used in power transmission and distribution processes.
  • the prior art outdoor vacuum circuit breaker includes a control box, a spring operating mechanism, three poles and three current transformers respectively disposed on the three poles; the control box is further provided with a joint handle And the indication switch and the branch handle, wherein the combination handle, the indication switch and the separation handle are connected to the spring operating mechanism through the connecting shaft through the housing of the control box; the three poles are fixedly mounted on the control box
  • the spring operating mechanism is disposed in the control box; the three poles are each provided with a connecting rod for controlling the action of the vacuum interrupter, and the three connecting rods are all connected with the spring operating mechanism.
  • the prior art spring operating mechanism consists of an operating device and a locking and releasing device.
  • the locking and releasing device is composed of a return spring, a slider and a swing arm that abuts the slider, and the output shaft is connected to the swing arm.
  • the swing arm swings, it acts against the slider and drives the return spring to work.
  • the slider is brought back by the return spring to reset and lock.
  • the slider pulls the slider to force the work to overcome the return spring.
  • the slider is separated from the swing arm and the swing arm is reset.
  • the prior art spring operating mechanism uses only a first-order four-bar linkage mechanism to realize the function of the spring operating mechanism, although the structure is simple, but the structure itself is There is no labor-saving mechanism, but mainly relying on increasing the elastic stiffness of the energy storage spring, increasing the cam and lengthening the force arm in the first-level four-bar linkage mechanism to achieve labor-saving purposes.
  • This not only causes the spring operating mechanism to be bulky, the structure is not compact, and the number of operations is large, and the increase in the spring operating mechanism leads to an increase in the spacing between the three poles, which in turn leads to a larger volume of the entire outdoor vacuum circuit breaker. 2. Since the lock and release device of this kind of structure requires the customer's spring resistance to work during use, it is difficult to operate.
  • the prior art outdoor vacuum circuit breaker has a large volume, a compact structure, a large number of operations, and poor operational reliability.
  • the technical problem to be solved by the present invention is to overcome the above drawbacks of the prior art and to provide an outdoor vacuum circuit breaker which has a simple structure, a small number of operations, high safety and reliability, and poor operational reliability.
  • the technical solution of the present invention is to provide an outdoor vacuum circuit breaker, including a control box and a spring operating machine. a three poles and three current transformers respectively disposed on the three poles; the three poles are fixedly mounted on the control box, and the spring operating mechanism is disposed in the control box; Each of the three poles is provided with a connecting rod for controlling the action of the vacuum interrupter, and the three connecting rods are all connected with a spring operating mechanism, and the spring operating mechanism is mounted on the frame and mounted on the frame.
  • the operating device and the locking and releasing device comprise: the operating device comprises an energy storage spring, a return spring, a moving contact spring, a cam, a parallel four-link;
  • the parallel four-link comprises a first frame bar and a second frame bar a first link, a support frame, a second link that can be used to form a link pole state with the first frame rod, and a third link that can be used to form a link pole state together with the second frame rod
  • a roller is mounted on the first link, the roller abuts or moves away from the cam;
  • the second link and the third link are equal in length and parallel to each other; one end of the second link, one end of the first frame bar, and the first One end of the connecting rod is hinged to the first pin shaft
  • One end of the third link, one end of the second frame rod, and the other end of the first link are hinged to the second pin, and the other ends of the second link and the third link are hinged to the support frame;
  • the frame is rotatably coupled to the second rotating shaft, and the second rotating shaft is rotatably coupled to the middle portion of the swing arm.
  • the other end of the swinging plate is disposed directly below the second rotating shaft.
  • the frame is further provided with a limiting shaft for defining a position of the swing arm, wherein the swing arm is provided with an arc groove matched with the limiting shaft, and the limiting shaft can abut against the curved slot Inside.
  • the limiting shaft is disposed at an end of the swing arm adjacent to the curved block.
  • the current transformer is an outdoor plug-in current transformer.
  • the pole is a solid-sealed pole.
  • the control box housing is a sealed housing.
  • the present invention has the following advantages compared with the prior art:
  • the invention adopts the reverse four-link labor-saving mechanism and the direct-axis energy storage structure, and utilizes the characteristic of the pole position of the connecting rod, that is, in the vicinity of the pole position, since the speed of the driven member is close to zero, a large increase can be obtained.
  • the force effect, the follower refers to the second link and the third link
  • the first mover corresponding to the second link and the third link is the first frame rod and the second frame rod
  • the invention can drive the second link and the second force with a small force when the second link and the third link are close to the extreme state
  • the three-link motion, while the force applied to the support frame by the second link and the third link can be large enough to meet the design requirements of the switch, which directly determines the stiffness of the energy storage spring can be small, and the size is correspondingly reduced.
  • the purpose of labor saving is achieved; thus, not only the spring operating mechanism is small in size, compact in structure, and the number of operations is small, but also the spacing between the three poles is reduced due to the reduction of the spring operating mechanism, thereby making the whole
  • the outdoor vacuum circuit breaker is small in size. 2.
  • the locking and releasing device of the present invention does not need to overcome the spring resistance to work, but uses the cam and the output shaft to drive the entire locking and releasing device, and only needs to gently rotate the first rotating shaft when releasing, so
  • the outdoor vacuum circuit breaker of the present invention is very simple to operate.
  • since there is no contact between the arcuate block and the limiting groove at the time of release there is no problem that the locking and releasing device fails due to wear, and therefore the outdoor vacuum circuit breaker of the present invention has high operational reliability.
  • the other end of the swinging plate is disposed directly below the second rotating shaft, which is advantageous for limiting the swinging plate to ensure the working reliability of the locking and releasing device.
  • the frame is further provided with a limiting shaft for defining the position of the swing arm, and the swing arm is provided with an arc groove matched with the limiting shaft, and the limiting shaft can be abutted In the arc groove, the use of the limit groove facilitates the large limitation of the limit axis, thereby increasing the operational reliability of the locking and releasing device.
  • the current transformer is an outdoor plug-in current transformer, which not only facilitates the installation of the current transformer, but also improves the production efficiency of the entire outdoor vacuum circuit breaker.
  • the pole is a solid-sealed pole, and the pressure resistance, heat resistance and torsion resistance of the vacuum interrupter are improved to ensure the working reliability of the outdoor vacuum circuit breaker.
  • Figure 1 is a front elevational view of an outdoor vacuum circuit breaker of the present invention.
  • FIG. 2 is a half cross-sectional view of the outdoor vacuum circuit breaker of the present invention.
  • Figure 3 is a perspective view of the miniaturized low energy operating device of the present invention.
  • Figure 4 is a front elevational view of the miniaturized low energy operating device of the present invention.
  • Figure 5 is a plan view of the miniaturized low energy operating device of the present invention.
  • Figure 6 is a cross-sectional view along line A-A of the miniaturized low energy operating device of the present invention.
  • Figure 7 is a schematic view showing the structure of the first position of the spring operating mechanism of the present invention.
  • Figure 8 is a structural schematic view of the second orientation of the spring operating mechanism of the present invention.
  • Figure 1 control box, 2, pole, 3, current transformer, 4, connecting rod, 5, frame, 6, energy storage spring, 7, return spring, 8, moving contact spring, 9, First cam, 10, first frame bar, 11, second frame bar, 12, first link, 13, support frame, 14, second link, 15, third link, 16, roller, 17, the first pin, 18, the second pin, 19, moving contact, 20, swing arm, 21, the first shaft, 22, swinging plate, 23, second cam, 24, curved block, 25, opening handle, 26, limit Positioning groove, 27, operating shaft, 28, second rotating shaft, 29, limit shaft, 30, curved groove, 31, closing handle, 32, indicating switch.
  • an outdoor vacuum circuit breaker of the present invention includes a control box 1, a spring operating mechanism a column 2 and three current transformers 3 respectively disposed on the three poles 2; the control box 1 is further provided with a combination handle 31, an indication switch 32 and a branch handle 25, and the combination handle 31.
  • the indicating switch 32 and the dividing handle 25 are connected to the spring operating mechanism through the connecting shaft through the housing of the control box 1.
  • the connecting shaft of the closing handle 31 is connected to the operating shaft 27 through the housing.
  • the connecting shaft of the indicating switch 32 is connected to the first pin shaft 17 through the housing, and the connecting shaft of the opening handle 25 is connected to the first rotating shaft 21 through the housing.
  • the three poles 2 are fixedly mounted on the control box 1.
  • the three poles 2 are fixed to the control box 1 by bolts; the spring operating mechanism is disposed in the control box 1;
  • the three poles 2 are each provided with a connecting rod 4 for controlling the operation of the vacuum interrupter, and the three connecting rods 4 are all connected with a spring operating mechanism, in the embodiment, the ends of the three connecting rods 4 The portions are respectively connected to the movable contact 19.
  • the spring operating mechanism is composed of a frame 5 and an operating device and a locking and releasing device mounted on the frame 5; the operating device includes an energy storage spring 6, a return spring 7, a moving contact spring 8, and a first cam.
  • Parallel four-bar linkage; the parallel four-bar linkage includes a first frame bar 10, a second frame bar 11, a first link 12, and a support frame 13, which can be used to form a connecting rod with the first frame bar 10.
  • a second link 14 in a pole state, a third link 15 that can be used to form a link pole state together with the second frame rod 11;
  • a first wheel 12 is mounted with a roller 16, the roller 16 and the first The cam 9 abuts or moves away;
  • the second link 14 and the third link 15 are equal in length and parallel to each other;
  • one end of the second link 14 , one end of the first frame rod 10 and one end of the first link 12 are hinged to On the first pin 17, one end of the third link 15, one end of the second frame rod 11, and the other end of the first link 12 are hinged to the second pin 18, the second link 14 and the third
  • the other end of the connecting rod 15 is hinged to the support frame 13;
  • one end of the return spring 7 and the movable contact spring 8 Both of them are opposite to the support frame 13, the other end of the return spring 7 is abutted against the frame 5, and the other end of the movable contact spring 8 is abutted against the movable contact 19, that is, the
  • the locking and releasing device comprises a swing arm 20, a first rotating shaft 21, and a matching swinging plate 22 and a second cam 23.
  • the middle of the swinging arm 20 is rotatably connected to the frame 5, that is, the middle of the swing arm 20 can be Rotating left and right with respect to the frame 5; one end of the swing arm 20 is hinged on the first pin shaft 17, and the other end of the swing arm 20 is provided with a curved block
  • the first rotating shaft 21 is rotatably connected to the frame 5; the circular surface of the inner end of the first rotating shaft 21 is provided with a limiting groove 26 that cooperates with the curved block 24;
  • the middle portion is fixed to the first rotating shaft 21; the second cam 23 is mounted on the operating shaft 27; one end of the swinging plate 22 is disposed directly above the second cam 23.
  • Rotating the middle portion of the swing arm 20 to the frame 5 means that the frame 5 is rotatably coupled to the second rotating shaft 28, and the second rotating shaft 28 is rotatably coupled to the central portion of the swing arm 20.
  • the other end of the wobble plate 22 is disposed directly below the second rotating shaft 28.
  • the frame 5 is further provided with a limiting shaft 29 for defining the position of the swing arm 20, and the swing arm 20 is provided with an arcuate groove 30 engaged with the limiting shaft 29, the limiting shaft 29 can be placed in the arcuate slot 30.
  • the limit shaft 29 is disposed at an end of the swing arm 20 adjacent to the curved block 24.
  • the current transformer 3 is an outdoor plug-in current transformer.
  • the pole 2 is a solid sealed pole.
  • the 0. 075A vacuum interrupter is used for the arc extinguishing chamber.
  • the control box 1 housing is a sealed housing.
  • the operating shaft 27 When the switch is closed, the operating shaft 27 is rotated by rotating the closing handle 31, and then the energy storage spring 6 and the first cam 9 are driven to move, so that the moving contact 19, the first rotating shaft 21, and the entire parallel four-link structure are reset.
  • the spring 7, the moving contact spring 8 and the like act, when the rotation is in position, the swing arm 20 is actuated by the first pin shaft 17, so that the curved block 24 on the swing arm 20 swings to abut against the limiting slot 26, then The entire spring operating mechanism is in a stable closing state; when opening, the first rotating shaft 21 is rotated, so that the curved block 24 is separated from the limiting groove 26, and then the force of the energy storage spring 6 is used for resetting.

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

Abstract

本发明公开了一种户外真空断路器,包括一个控制箱(1)、一个弹簧操作机构、三个极柱(2)以及三个分别设在三个极柱(2)上的电流互感器(3);所述的三个极柱(2)固定安装在控制箱(1)上,所述的弹簧操作机构设在控制箱(1)内;所述三个极柱(2)均设有一个用于控制真空灭弧室动作的连杆(4),所述的三个连杆(4)均与弹簧操作机构连接,所述的弹簧操作机构由机架(5)以及安装在机架(5)上的操作装置和锁定及释放装置组成。上述户外真空断路器的结构简单、操作次数少、安全可靠性高且工作可靠性差。

Description

说 明 书 户外真空断路器
技术领域
本发明涉及一种电力电气设备, 具体讲是一种户外真空断路器。
背景技术
户外真空断路器普遍应用于电力分流的输配电过程中。 现有技术的户外真空断路器包 括一个控制箱、一个弹簧操作机构、三个极柱以及三个分别设在三个极柱上的电流互感器; 所述的控制箱外部还设有合间手柄、 指示开关以及分间手柄, 所述的合间手柄、 指示开关 以及分间手柄均通过连接轴穿过控制箱的壳体与弹簧操作机构连接; 所述的三个极柱固定 安装在控制箱上, 所述的弹簧操作机构设在控制箱内; 所述三个极柱均设有一个用于控制 真空灭弧室动作的连杆, 所述的三个连杆均与弹簧操作机构连接。 现有技术的弹簧操作机 构由操作装置和锁定及释放装置组成。 所述的锁定及释放装置由一复位弹簧、 滑块和一与 滑块相抵的摆臂组成, 所述的输出轴与摆臂连接。 摆臂在摆动时, 抵住滑块动作, 同时带 动复位弹簧做功, 当到达一定位置时, 滑块由复位弹簧带回进行复位, 进行锁定。释放时, 用力拉动滑块动作, 克服复位弹簧进行做工, 当到达一定位置时, 滑块与摆臂相离, 摆臂 复位。 上述结构的户外真空断路器在实际的使用过程中存在以下缺陷: 1、 现有技术的弹 簧操作机构仅采用一级四连杆机构实现弹簧操作机构的功能, 虽然结构简单, 但是其结构 本身并没有省力机构, 而主要依靠增加蓄能弹簧的弹性刚度、 加大凸轮以及加长一级四连 杆机构中的力臂来得以达到省力的目的。 这样不仅导致弹簧操作机构的体积较大、 结构不 紧凑以及操作次数多, 而且由于弹簧操作机构的增大会导致三个极柱间的间距增大, 进而 导致整个户外真空断路器的体积较大。 2、 由于该种结构的锁定及释放装置在使用过程中 均需要客服弹簧阻力做功, 因此操作起来比较困难。 且在释放时, 由于摆臂具有很强的回 弹力, 因此滑块以及摆臂易受磨损而导致锁定及释放装置的失效, 因而现有技术的弹簧操 作机构的工作可靠性较差。 因此, 从以上的描述可以看出, 现有技术的户外真空断路器的 体积大、 结构不紧凑、 操作次数多且工作可靠性差。
发明内容
本发明要解决的技术问题是, 克服以上现有技术的缺陷, 提供一种结构简单、 操作次 数少、 安全可靠性高且工作可靠性差的户外真空断路器。
本发明的技术方案是, 提供一种户外真空断路器, 包括一个控制箱、 一个弹簧操作机 构、 三个极柱以及三个分别设在三个极柱上的电流互感器; 所述的三个极柱固定安装在控 制箱上, 所述的弹簧操作机构设在控制箱内; 所述三个极柱均设有一个用于控制真空灭弧 室动作的连杆, 所述的三个连杆均与弹簧操作机构连接, 所述的弹簧操作机构由机架以及 安装在机架上的操作装置和锁定及释放装置组成; 所述的操作装置包括蓄能弹簧、 复位弹 簧、 动触头弹簧、 凸轮、 平行四连杆; 平行四连杆包括第一机架杆、 第二机架杆、 第一连 杆、 支撑架、 可用于与第一机架杆一起形成连杆极位状态的第二连杆、 可用于与第二机架 杆一起形成连杆极位状态的第三连杆;第一连杆上安装有滚轮,该滚轮与凸轮相抵或远离; 第二连杆和第三连杆长度相等且相互平行; 第二连杆的一端、 第一机架杆的一端和第一连 杆的一端均铰接于第一销轴上, 第三连杆的一端、 第二机架杆的一端、 第一连杆的另一端 均铰接于第二销轴上, 第二连杆和第三连杆的另一端均与支撑架铰接; 复位弹簧和动触头 弹簧的一端均与支撑架相抵, 复位弹簧的另一端与机架相抵, 动触头弹簧的另一端与动触 头相抵; 所述的锁定及释放装置包括摆臂、 第一转轴以及配合使用的摆板和凸轮; 所述摆 臂的中部转动连接在机架上; 所述摆臂的一端铰接在输出轴上, 所述摆臂的另一端设有弧 形块; 所述的第一转轴转动连接在机架上; 所述第二转轴的内端的圆面上设有一与弧形块 相配合的限位槽; 所述的摆板中部固定在第一转轴上; 所述的凸轮安装在操作轴上; 所述 摆板的一端设在凸轮的正上方。
所述摆臂的中部转动连接在机架上是指: 所述的机架上转动连接有第二转轴, 所述的 第二转轴与摆臂的中部转动连接。
所述摆板的另一端设在第二转轴的正下方。
所述的机架上还设有一用于限定摆臂位置的限位轴, 所述的摆臂上设有与限位轴配合 的弧形槽, 所述的限位轴可抵在弧形槽内。
所述的限位轴设在靠近弧形块的摆臂的一端。
所述的电流互感器为户外插拔式电流互感器。
所述的极柱为固封极柱。
所述的控制箱壳体为密封壳体。
采用以上结构后, 本发明与现有技术相比, 具有以下优点:
1、 本发明采用反向四连杆省力机构以及直接轴储能结构, 利用连杆极位的特点, 即 在极位附近, 由于从动件的速度接近于零, 故可获得很大的增力效果, 从动件就是指的第 二连杆和第三连杆, 与第二连杆和第三连杆相对应的原动件为第一机架杆和第二机架杆, 因此本发明在第二连杆和第三连杆接近极位状态时, 能够用较小的力来驱动第二连杆和第 三连杆运动, 同时第二连杆和第三连杆施加于支撑架的力却可以很大, 足以满足开关的设 计要求, 这直接决定了蓄能弹簧的刚度可以较小, 尺寸相应减小, 从而达到省力的目的; 这样, 不仅会使得弹簧操作机构的体积较小、 结构紧凑以及操作次数少, 而且由于弹簧操 作机构的减小会使得三个极柱间的间距减小, 因而使得整个户外真空断路器的体积较小。 2、 同时, 本发明的锁定及释放装置均不需要克服弹簧阻力做功, 而是利用凸轮以及输出 轴带动整个锁定及释放装置动作, 在释放时只需要用手轻轻转动第一转轴即可, 因此本发 明户外真空断路器操作起来非常简单。 另外, 由于在释放时弧形块与限位槽之间无接触, 因此也就不存在由于磨损而导致锁定及释放装置失效的问题, 因此本发明户外真空断路器 的工作可靠性较高。
作为改进, 所述摆板的另一端设在第二转轴的正下方, 这样有利于对摆板进行限位, 以保证锁定及释放装置的工作可靠性。
作为改进, 所述的机架上还设有一用于限定摆臂位置的限位轴, 所述的摆臂上设有与 限位轴配合的弧形槽, 所述的限位轴可抵在弧形槽内, 利用限位槽有利于对限位轴进行较 大的限定, 从而增加锁定及释放装置的工作可靠性。
作为改进,所述的电流互感器为户外插拔式电流互感器,不仅方便电流互感器的安装, 而且有利于提高整个户外真空断路器的生产效率。
作为改进, 所述的极柱为固封极柱, 对真空灭弧室的抗压性、 抗热性、 抗扭性能进行 提高, 以保证户外真空断路器的工作可靠性。 附图说明
图 1是本发明户外真空断路器的主视图。
图 2是本发明户外真空断路器的半剖图。
图 3是本发明小型化低能量操作装置的立体视图。
图 4是本发明小型化低能量操作装置的主视图。
图 5是本发明小型化低能量操作装置的俯视图。
图 6是本发明小型化低能量操作装置的 A-A剖视图。
图 7是本发明弹簧操作机构第一方位的结构示意图。
图 8是本发明弹簧操作机构第二方位的结构示意图。
图中所示 1、 控制箱, 2、 极柱, 3、 电流互感器, 4、 连杆, 5、 机架, 6、 蓄能弹 簧, 7、 复位弹簧, 8、 动触头弹簧, 9、 第一凸轮, 10、 第一机架杆, 11、 第二机架杆, 12、 第一连杆, 13、 支撑架, 14、 第二连杆, 15、 第三连杆, 16、 滚轮, 17、 第一销轴, 18、 第二销轴, 19、 动触头, 20、 摆臂, 21、 第一转轴, 22、 摆板, 23、 第二凸轮, 24、 弧形块, 25、 分闸手柄, 26、 限位槽, 27、 操作轴, 28、 第二转轴, 29、 限位轴, 30、 弧 形槽, 31、 合闸手柄, 32、 指示开关。
具体实鮮式
下面结合附图和具体实施例对本发明作进一步说明。
如图 1、 图 2、 图 3、 图 4、 图 5、 图 6、 图 7、 图 8所示, 本发明一种户外真空断路器, 包括一个控制箱 1、 一个弹簧操作机构、 三个极柱 2以及三个分别设在三个极柱 2上的电 流互感器 3; 所述的控制箱 1外部还设有合间手柄 31、 指示开关 32以及分间手柄 25, 所 述的合间手柄 31、指示开关 32以及分间手柄 25均通过连接轴穿过控制箱 1的壳体与弹簧 操作机构连接, 在本实施例中, 合闸手柄 31的连接轴穿过壳体与操作轴 27连接, 指示开 关 32的连接轴穿过壳体与第一销轴 17连接, 分闸手柄 25的连接轴穿过壳体与第一转轴 21连接。
所述的三个极柱 2固定安装在控制箱 1上, 在本实施例中, 三个极柱 2通过螺栓固定 在控制箱 1上; 所述的弹簧操作机构设在控制箱 1内; 所述三个极柱 2均设有一个用于控 制真空灭弧室动作的连杆 4, 所述的三个连杆 4均与弹簧操作机构连接, 在本实施例中三 个连杆 4的端部分别与动触头 19连接。
所述的弹簧操作机构由机架 5以及安装在机架 5上的操作装置和锁定及释放装置; 所 述的操作装置包括蓄能弹簧 6、 复位弹簧 7、 动触头弹簧 8、 第一凸轮 9、 平行四连杆; 平 行四连杆包括第一机架杆 10、 第二机架杆 11、 第一连杆 12、 支撑架 13、 可用于与第一机 架杆 10—起形成连杆极位状态的第二连杆 14、可用于与第二机架杆 11一起形成连杆极位 状态的第三连杆 15; 第一连杆 12上安装有滚轮 16, 该滚轮 16与第一凸轮 9相抵或远离; 第二连杆 14和第三连杆 15长度相等且相互平行; 第二连杆 14的一端、 第一机架杆 10的 一端和第一连杆 12的一端均铰接于第一销轴 17上, 第三连杆 15的一端、 第二机架杆 11 的一端、 第一连杆 12的另一端均铰接于第二销轴 18上, 第二连杆 14和第三连杆 15的另 一端均与支撑架 13铰接; 复位弹簧 7和动触头弹簧 8的一端均与支撑架 13相抵, 复位弹 簧 7的另一端与机架 5相抵, 动触头弹簧 8的另一端与动触头 19相抵, 即动触头弹簧 8 经动触头 19与连杆 4的端部相抵。
所述的锁定及释放装置包括摆臂 20、第一转轴 21以及配合使用的摆板 22和第二凸轮 23 所述摆臂 20的中部转动连接在机架 5上, 即摆臂 20的中部可相对于机架 5进行左右 旋转动作; 所述摆臂 20的一端铰接在第一销轴 17上, 所述摆臂 20的另一端设有弧形块 24; 所述的第一转轴 21转动连接在机架 5上; 所述第一转轴 21的内端的圆面上设有一与 弧形块 24相配合的限位槽 26; 所述的摆板 22中部固定在第一转轴 21上; 所述的第二凸 轮 23安装在操作轴 27上; 所述摆板 22的一端设在第二凸轮 23的正上方。
所述摆臂 20的中部转动连接在机架 5上是指: 所述的机架 5上转动连接有第二转轴 28, 所述的第二转轴 28与摆臂 20的中部转动连接。
所述摆板 22的另一端设在第二转轴 28的正下方。
所述的机架 5上还设有一用于限定摆臂 20位置的限位轴 29,所述的摆臂 20上设有与 限位轴 29配合的弧形槽 30, 所述的限位轴 29可抵在弧形槽 30内。
所述的限位轴 29设在靠近弧形块 24的摆臂 20的一端。
所述的电流互感器 3为户外插拔式电流互感器。
所述的极柱 2为固封极柱。 所述的灭弧室采用 0. 075A真空灭弧室。 所述的控制箱 1 壳体为密封壳体。
合闸时, 通过旋转合闸手柄 31, 带动操作轴 27转动, 继而带动蓄能弹簧 6以及第一 凸轮 9动作, 使得整个平行四连杆结构中的动触头 19、 第一转轴 21、 复位弹簧 7、 动触头 弹簧 8等等动作, 当旋转到位时, 由第一销轴 17带动摆臂 20动作, 使得摆臂 20上的弧 形块 24摆动而与限位槽 26相抵, 这时整个弹簧操作机构处于稳定的合闸状态; 分闸时, 通过旋转第一转轴 21, 使得弧形块 24与限位槽 26分离, 再利用蓄能弹簧 6的力量进行复 位。
以上仅就本发明的最佳实施例作了说明, 但不能理解为是对权利要求的限制。 本发明 不仅限于以上实施例, 其具体结构允许有变化。 但凡在本发明独立权利要求的保护范围内 所作的各种变化均在本发明的保护范围内。

Claims

权 利 要 求 书
1、 一种户外真空断路器, 包括一个控制箱 (1)、 一个弹簧操作机构、 三个极柱 (2) 以及三个分别设在三个极柱 (2) 上的电流互感器 (3); 所述的三个极柱 (2) 固定安装在 控制箱 (1) 上, 所述的弹簧操作机构设在控制箱 (1) 内; 所述三个极柱 (2) 均设有一 个用于控制真空灭弧室动作的连杆 (4), 所述的三个连杆 (4) 均与弹簧操作机构连接, 其特征在于: 所述的弹簧操作机构由机架 (5) 以及安装在机架 (5) 上的操作装置和锁定 及释放装置组成; 所述的操作装置包括蓄能弹簧 (6)、 复位弹簧 (7)、 动触头弹簧 (8)、 第一凸轮 (9)、 平行四连杆; 平行四连杆包括第一机架杆 (10)、 第二机架杆 (11)、 第一 连杆 (12)、 支撑架 (13)、 可用于与第一机架杆 (10) —起形成连杆极位状态的第二连杆
(14)、可用于与第二机架杆( 11 )一起形成连杆极位状态的第三连杆(15);第一连杆( 12) 上安装有滚轮 (16), 该滚轮 (16) 与第一凸轮 (9) 相抵或远离; 第二连杆 (14) 和第三 连杆 (15) 长度相等且相互平行; 第二连杆 (14) 的一端、 第一机架杆 (10) 的一端和第 一连杆(12)的一端均铰接于第一销轴(17)上, 第三连杆(15)的一端、第二机架杆(11) 的一端、 第一连杆 (12) 的另一端均铰接于第二销轴 (18) 上, 第二连杆 (14) 和第三连 杆 (15) 的另一端均与支撑架 (13) 铰接; 复位弹簧 (7) 和动触头弹簧 (8) 的一端均与 支撑架 (13) 相抵, 复位弹簧 (7) 的另一端与机架 (5) 相抵, 动触头弹簧 (8) 的另一 端与动触头 (19) 相抵; 所述的锁定及释放装置包括摆臂 (20)、 第一转轴 (21) 以及配 合使用的摆板 (22) 和第二凸轮 (23); 所述摆臂 (20) 的中部转动连接在机架 (5) 上; 所述摆臂(20)的一端铰接在第一销轴(17)上,所述摆臂(20)的另一端设有弧形块(24); 所述的第一转轴 (21) 转动连接在机架 (5) 上; 所述第一转轴 (21) 的内端的圆面上设 有一与弧形块 (24) 相配合的限位槽 (26); 所述的摆板 (22) 中部固定在第一转轴 (21) 上; 所述的第二凸轮 (23) 安装在操作轴 (27) 上; 所述摆板 (22) 的一端设在第二凸轮
(23) 的正上方。
2、 根据权利要求 1 所述的户外真空断路器, 其特征在于: 所述摆臂 (20) 的中部转 动连接在机架 (5) 上是指: 所述的机架 (5) 上转动连接有第二转轴 (28), 所述的第二 转轴 (28) 与摆臂 (20) 的中部转动连接。
3、 根据权利要求 2 所述的户外真空断路器, 其特征在于: 所述摆板 (22) 的另一端 设在第二转轴 (28) 的正下方。
4、 根据权利要求 1所述的户外真空断路器, 其特征在于: 所述的机架 (5) 上还设有 一用于限定摆臂 (20) 位置的限位轴 (29), 所述的摆臂 (20) 上设有与限位轴 (29) 配 合的弧形槽 (30), 所述的限位轴 (29) 可抵在弧形槽 (30) 内。
5、 根据权利要求 4 所述的户外真空断路器, 其特征在于: 所述的限位轴 (29) 设在 靠近弧形块 (24) 的摆臂 (20) 的一端。
6、 根据权利要求 1所述的户外真空断路器, 其特征在于: 所述的电流互感器 (3) 为 户外插拔式电流互感器。
7、 根据权利要求 1所述的户外真空断路器, 其特征在于: 所述的极柱 (2) 为固封极 柱。
8、 根据权利要求 1所述的户外真空断路器, 其特征在于: 所述的控制箱 (1 ) 壳体为 密封壳体。
PCT/CN2012/085245 2012-07-30 2012-11-26 户外真空断路器 WO2014019303A1 (zh)

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