WO2020211585A1 - 一种n极不带灭弧装置的断路器 - Google Patents

一种n极不带灭弧装置的断路器 Download PDF

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Publication number
WO2020211585A1
WO2020211585A1 PCT/CN2020/079794 CN2020079794W WO2020211585A1 WO 2020211585 A1 WO2020211585 A1 WO 2020211585A1 CN 2020079794 W CN2020079794 W CN 2020079794W WO 2020211585 A1 WO2020211585 A1 WO 2020211585A1
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Prior art keywords
circuit breaker
pole circuit
pole
adjacent live
live wire
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PCT/CN2020/079794
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English (en)
French (fr)
Inventor
王克诚
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天津加美特电气设备有限公司
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Publication of WO2020211585A1 publication Critical patent/WO2020211585A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms

Definitions

  • the invention relates to the field of electrical switches, in particular to a circuit breaker with N pole without an arc extinguishing device.
  • Switch contacts will produce arcs when cutting off current or when load is switched on and off, which is dangerous and harmful.
  • each stage of multi-pole circuit breakers with N poles on the market is equipped with contact arc extinguishing devices.
  • the mechanical structure design of the circuit breaker can ensure the N-pole circuit breaker It has a reliable make-before-break function.
  • the trip sensitivity of the live wire circuit breaker is better than the N pole, so the N pole circuit breaker arc extinguishing device can be removed, thereby reducing the manufacturing cost. It is also possible to install other protective equipment or components in the saved space to achieve more functional protection with the same volume or even a smaller volume.
  • the existing N-pole circuit breaker without arc extinguishing device often adopts the method of increasing the contact overtravel in the design of making first and then breaking. This method has the disadvantages of not obvious difference in the breaking time after making and changing the contact pressure. . Therefore, the present invention proposes an N-pole circuit breaker without an arc extinguishing device to solve the deficiencies in the prior art.
  • the present invention adopts a mutual triggering and tripping design formed by forming a cross and inter-insertion structure with the trip link of the adjacent live wire circuit breaker and the trip link of the N-pole circuit breaker to ensure that the adjacent live wire circuit breaker Trip first. After the contacts of adjacent live circuit breakers are out of contact, when the moving contacts of the adjacent live circuit breakers are disconnected and reach the end point, the trip link of the N-pole circuit breaker will be fired to ensure that the N-pole circuit breaker operates. The contacts do not produce arc, so as to achieve the purpose of breaking the N-pole circuit breaker.
  • the present invention provides an N-pole circuit breaker without an arc extinguishing device, which includes an N-pole circuit breaker and an adjacent live wire circuit breaker. Both sides of the N-pole circuit breaker are provided with an N-pole circuit breaker output terminal and an N-pole circuit breaker.
  • the N-pole circuit breaker is provided with the N-pole circuit breaker static contact, the N-pole circuit breaker moving contact and the N-pole circuit breaker trip link, above the N-pole circuit breaker trip link is provided
  • a driving arm a U-shaped connecting rod is connected to the driving arm, the other side of the U-shaped connecting rod is connected with the driving wheel of the N-pole circuit breaker contact mechanism, and the driving arm is arranged above the N-pole moving contact movement mechanism
  • An N-pole circuit breaker tripping lever is provided under the N-pole moving contact movement mechanism, and an N-pole circuit breaker trip lever spring is provided on one side of the N-pole circuit breaker trip link, and the adjacent live wire
  • the circuit breaker is equipped with the adjacent live wire circuit breaker trip link, the adjacent live wire circuit breaker handle drive wheel, the handle coupling lever, the adjacent live wire circuit breaker trip lever spring and the adjacent live wire circuit breaker moving contact movement mechanism
  • the trip link of the N-pole circuit breaker and the trip link of the adjacent live line circuit breaker
  • the adjacent live-wire circuit breaker trip link is inserted in the upwardly bent end of the N-pole circuit breaker tripping lever and is in close contact with it.
  • the N-pole circuit breaker trips An electromagnetic release is connected to the left end of the striker.
  • a further improvement is that: the drive wheel of the N-pole circuit breaker contact mechanism is provided with a sector groove inside, the handle coupling lever is provided with a shift block, the shift block is located inside the sector groove, and the shift block The free rotation angle in the sector-shaped slot is slightly larger than the closing and closing rotation angles of the adjacent live wire circuit breaker handle drive wheels.
  • a further improvement is that one end of the handle coupling lever is a non-circular structure, and one end of the non-circular structure of the handle coupling lever is connected to the adjacent live wire circuit breaker handle driving wheel, and the handle coupling lever The other end is a round shaft structure, and one end of the round shaft structure of the handle coupling lever is connected with the drive wheel of the N-pole circuit breaker contact mechanism.
  • a further improvement is that: the drive wheels of the N-pole circuit breaker contact mechanism and the adjacent live wire circuit breaker handle drive wheels are connected in series via a handle coupling lever.
  • a further improvement is that: the N-pole circuit breaker trip link is inserted into the end of the tripping and closing movement track of the moving contact movement mechanism of the adjacent live wire circuit breaker.
  • a further improvement is that the spring torsion force of the trip lever of the N-pole circuit breaker inside the N-pole circuit breaker is greater than that of the trip lever spring of the adjacent live wire circuit breaker inside the adjacent live wire circuit breaker.
  • a further improvement is that the adjacent live wire circuit breaker is provided with an adjacent live wire circuit breaker energy storage block, and the N-pole circuit breaker is not provided with an energy storage device.
  • the beneficial effects of the present invention are as follows: 1.
  • the present invention adopts the N-pole circuit breaker trip link and the adjacent live line circuit breaker trip link to form a cross-insertion structure to form a mutual triggering trip design, and the adjacent live line is open. After the moving contact of the N-pole circuit breaker is out of contact, the moving contact of the adjacent live-wire circuit breaker moves to the end and then the N-pole circuit breaker trip link of the N-pole circuit breaker is fired, which ensures the contact of the N-pole circuit breaker. There is a significant time difference between the disconnection and the disconnection of the contact of the adjacent live line circuit breaker, so as to achieve the purpose of no arcing in the N-pole circuit breaker;
  • the tripping sensitivity of the adjacent live-wire circuit breaker is much higher than that of the N-pole circuit breaker, making the N-pole circuit breaker resistant Vibration (initiating a false trip before the adjacent live circuit breaker) is much higher than the adjacent live circuit breaker;
  • the sector-shaped slot structure design inside the drive wheel of the N-pole circuit breaker contact mechanism overcomes the disadvantage of the traditional multi-pole circuit breaker handles being connected in parallel, and the N-pole has to be powered off synchronously with the live wire circuit breaker, ensuring the handle connection
  • the shift block on the shaft shift lever has a certain free rotation angle space in the sector slot to achieve the purpose of breaking the N-pole circuit breaker;
  • Fig. 2 is a schematic diagram of the working principle of the N-pole single-phase circuit breaker of the present invention.
  • Figure 3 is an exploded schematic diagram of the working principle of the N-pole single-phase circuit breaker of the present invention.
  • Fig. 4 is a schematic diagram of the cross tripping principle of a three-phase circuit breaker with N-pole on-before-off in the present invention.
  • Figure 5 is a schematic view of the structure of the drive wheel of the contact mechanism of the N-pole circuit breaker of the present invention.
  • N-pole circuit breaker 2. Adjacent live wire circuit breaker; 3. N-pole circuit breaker output terminal; 4. N-pole circuit breaker input terminal; 5. N-pole circuit breaker static contact; 6. N-pole circuit breaker Movable contact of the device; 7. N-pole circuit breaker trip link; 8. Drive arm; 9, U-shaped link; 10. N-pole circuit breaker contact mechanism driving wheel; 11. N-pole circuit breaker tripping lever 12. N-pole moving contact movement mechanism; 13. N-pole circuit breaker trip lever spring; 14. Adjacent live wire circuit breaker trip link; 15. Adjacent live wire circuit breaker handle drive wheel; 16. Handle coupling Shift lever; 17, adjacent live wire circuit breaker trip lever spring; 18, adjacent live wire circuit breaker moving contact movement mechanism; 19, adjacent live wire circuit breaker energy storage block; 20, sector slot; 21, shift block; 22. Electromagnetic release.
  • this embodiment proposes an N-pole circuit breaker without an arc extinguishing device, which includes an N-pole circuit breaker 1 and an adjacent live wire circuit breaker 2.
  • N-pole circuit breaker output terminal 3 and N-pole circuit breaker input terminal 4 are provided on both sides of the circuit breaker 1 respectively.
  • the N-pole circuit breaker 1 is provided with N-pole circuit breaker static contacts 5 and N-pole circuit breaker movable contacts.
  • the head 6 and the N-pole circuit breaker trip link 7 are provided with a driving arm 8 above the N-pole circuit breaker trip link 7, and a U-shaped connecting rod 9 is connected to the driving arm 8. The other side of the rod 9 is connected to the drive wheel 10 of the N-pole circuit breaker contact mechanism.
  • the drive arm 8 is arranged above the N-pole moving contact moving mechanism 12, and the N-pole moving contact moving mechanism 12 is provided with an N-pole Circuit breaker tripping lever 11, one side of the N-pole circuit breaker trip link 7 is provided with an N-pole circuit breaker trip lever spring 13, and the adjacent live wire circuit breaker 2 is provided with adjacent live wire circuit breaker tripping Buckle link 14, adjacent live wire circuit breaker handle drive wheel 15, handle coupling lever 16, adjacent live wire circuit breaker trip lever spring 17 and adjacent live wire circuit breaker moving contact movement mechanism 18, the N pole is open
  • the trip link 7 of the N-pole circuit breaker and the trip link 14 of the adjacent live wire circuit breaker form a cross-insertion structure.
  • One end of the trip link 7 of the N-pole circuit breaker is inserted in the movable contact movement mechanism of the adjacent live wire circuit breaker. Inside 18, the adjacent live wire circuit breaker trip link 14 is inserted into and in close contact with the upwardly bent end of the N-pole circuit breaker tripping lever 11, and the N-pole circuit breaker trips An electromagnetic tripper 22 is connected to the left end of the striker 11.
  • the N-pole circuit breaker contact mechanism drive wheel 10 is provided with a sector groove 20 inside, and the handle coupling shift lever 16 is provided with a shift block 21 which is located inside the sector groove 20, and the The free rotation angle of the shift block 21 in the sector groove 20 is slightly larger than the closing and closing rotation angles of the adjacent live wire circuit breaker handle driving wheels 15.
  • One end of the handle coupling lever 16 has a non-circular structure, and one end of the non-circular structure of the handle coupling lever 16 is connected to the adjacent live wire circuit breaker handle driving wheel 15, and the handle coupling lever 16
  • the other end is a round shaft structure, and one end of the round shaft structure of the handle coupling lever 16 is connected to the drive wheel 10 of the N-pole circuit breaker contact mechanism.
  • the wire diameter of the N-pole circuit breaker trip lever spring 13 is larger than the wire diameter of the adjacent live wire circuit breaker trip lever spring 17, and the N pole circuit breaker trip lever spring 13 and the adjacent live wire circuit breaker trip lever spring
  • the steel wire of 17 has the same strength.
  • the adjacent live wire circuit breaker 2 is provided with an adjacent live wire circuit breaker energy storage block 19, and the N-pole circuit breaker 1 is not provided with an energy storage device.
  • the N-pole circuit breaker trip link 7 of the N-pole circuit breaker 1 extends to the inside of the adjacent live wire circuit breaker 2, when the contacts of the adjacent live wire circuit breaker 2 are out of contact, until the adjacent live wire circuit breaker 2
  • the N-pole circuit breaker trip link 7 is triggered, which causes the contacts of the N-pole circuit breaker 1 to trip and separate.
  • the adjacent live wire is disconnected. If the device 2 is already in the power-off state, it will not cause the static and dynamic contacts of the N-pole circuit breaker 1 to generate an arc.
  • a sector slot 20 is provided inside the driving wheel 10 of the N-pole circuit breaker contact mechanism, and other adjacent live wire circuit breaker handles are driven
  • the wheel 15 is connected in series by a handle coupling lever 16 with a non-circular structure at one end to ensure that adjacent live circuit breakers 2 at all levels are linked together, and the other end of the handle coupling lever 16 is a circular shaft structure, and the circular shaft surface is set
  • a shift block 21, the round shaft end is placed in the N-pole circuit breaker contact mechanism drive wheel 10 of the N-pole circuit breaker 1, and the shift block 21 is placed in the sector slot 20 inside the N-pole circuit breaker contact mechanism drive wheel 10,
  • the N-pole circuit breaker 1 is synchronized with other adjacent live wire circuit breakers 2 when closing.
  • the sector slot 20 is deducted from the slot occupied by the shift block 21
  • the sector angle outside the inner space is the angle at which the shift block 21 can rotate freely in the sector slot 20, and the closing and opening angles of the adjacent live wire breaker handle drive wheels 15 are smaller than the shift block 21 in the sector slot 20
  • the angle of free rotation ensures that when the adjacent live wire circuit breaker handle driving wheel 15 is turned off and rotates counterclockwise, the block 21 on the handle coupling lever 16 rotates freely in the sector slot 20 without interference, thus It will not cause the N-pole circuit breaker 1 and the live wire circuit breaker to trip synchronously, and a significant N-pole post-breaking effect is obtained.
  • the present invention adopts the N-pole circuit breaker trip link 7 and the adjacent live line circuit breaker trip link 14 to form a cross-insertion structure to form a mutual triggering trip design.
  • the moving contacts of the adjacent live line circuit breakers 2 are separated After the contact, the movable contact movement mechanism 18 of the adjacent live wire circuit breaker moves to the end point and then fires the N-pole circuit breaker trip link 7 of the N-pole circuit breaker 1 to ensure that the contact of the N-pole circuit breaker 1 is disconnected.
  • the disconnection of the contact with the adjacent live wire breaker 2 produces a significant time difference, so that the N-pole circuit breaker 1 does not generate an arc.
  • the sector slot 20 inside the drive wheel 10 of the N-pole circuit breaker contact mechanism overcomes the disadvantages of the traditional multi-pole circuit breaker handles being connected in parallel, and the N-pole has to be powered off synchronously with the live wire circuit breaker, ensuring the handle connection
  • the shift block 21 on the shaft shift lever 16 has a certain free rotation angle space in the fan-shaped slot 20 to achieve the purpose of the N-pole circuit breaker 1 being turned off.
  • the combined design of the adjacent live wire breaker 2 with the adjacent live wire breaker energy storage block 19 and the N-pole circuit breaker without energy storage device can ensure that when the circuit breaker needs to be switched on for the closing action, the adjacent live wire
  • the moving contact movement mechanism 18 of the circuit breaker is blocked by the energy storage block 19 of the adjacent live wire circuit breaker, while the N-pole moving contact movement mechanism 12 is not blocked, so as to ensure that the N-pole circuit breaker 1 is ahead of the adjacent live wire circuit breaker 2 The purpose of turning on the power.

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  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

本发明公开了一种N极不带灭弧装置的断路器，包括N极断路器和相邻火线断路器，N极断路器内部设有N极断路器脱扣联杆，N极断路器脱扣联杆和相邻火线断路器脱扣联杆形成交叉互插结构；本发明通过采用了与相邻火线断路器的相邻火线断路器脱扣联杆与N极断路器的N极断路器脱扣联杆形成交叉互插结构的触发的设计，保证了相邻火线断路器先脱扣，相邻火线断路器的触头脱离接触后，相邻火线断路器的触头机构运动到即将到达终点时再击发N极断路器的N极断路器脱扣联杆动作，保证了N极断路器触头不产生电弧，从而达到N极断路器后断的目的，无需更换部件以及重新设计N极的触头机构。

Description

一种N极不带灭弧装置的断路器 技术领域
本发明涉及电气开关领域，尤其涉及一种N极不带灭弧装置的断路器。
背景技术
开关触头在切断电流或带载接通和断开时都会产生电弧，是危险和有害的，现在市场上带有N极的多极断路器的每一级都是具备触头灭弧装置的，因为合闸时不确定哪一极断路器触头先合上，脱扣掉闸时，也不确定哪一极断路器最后断开，若在断路器机械结构设计方面可以确保N极断路器具备可靠的先通后断功能，在抗震(防止误掉闸)性能上，火线断路器的脱扣灵敏度优于N极，就可以将N极的断路器灭弧装置去除，从而降低制造成本，也可以将省出来的空间安装其他保护装备或元器件，以同样的体积甚至更小的体积实现更多功能的保护。
现有的无灭弧装置的N极断路器，在先通后断设计上往往采用加大触头超程的方式，这种方式存在现通后断时间差不明显以及需要改变触头压力的缺点。因此，本发明提出一种N极不带灭弧装置的断路器，以解决现有技术中的不足之处。
发明内容
针对上述问题，本发明通过采用了与相邻火线断路器的脱扣联杆与N极断路器的脱扣联杆形成交叉互插结构构成的相互触发脱扣设计，保证了相邻火线断路器先脱扣，相邻火线断路器的触头脱离接触后，相邻火线断路器的动触头断开即将到达终点时再击发N极断路器的脱扣联杆动作，保证了N极断路器触头不产生电弧，从而达到N极断路器后断的目的。
本发明提出一种N极不带灭弧装置的断路器，包括N极断路器和相邻火线断路器，所述N极断路器两侧分别设有N极断路器输出端子和N极断路器输入端子，所述N极断路器内部设有N极断路器静触头、N极断路器动触头和N极断路器脱扣联杆，所述N极断路器脱扣联杆上方设有驱动臂，所述驱动臂上连接有U型连杆，所述U型连杆另一侧与N极断路器触头机构驱动轮相连，所述驱动臂设置在N极动触头运动机构上方，所述N极动触头运动机构下方设有N极断路器脱扣撞杆，所述N极断路器脱扣联杆一侧设有N极断路器脱扣杠杆弹簧，所述相邻火线断路器内部设有相邻火线断路器脱扣联杆、相邻火线断路器 手柄驱动轮、手柄联轴拨杆、相邻火线断路器脱扣杠杆弹簧和相邻火线断路器动触头运动机构，所述N极断路器脱扣联杆和相邻火线断路器脱扣联杆形成交叉互插结构，所述N极断路器脱扣联杆一端插设在所述相邻火线断路器动触头运动机构内部，所述相邻火线断路器脱扣联杆插设在所述N极断路器脱扣撞杆右侧向上弯曲的端部并与之紧密接触，所述N极断路器脱扣撞杆左侧端部连接有电磁脱扣器。
进一步改进在于：所述N极断路器触头机构驱动轮内部设有扇形槽，所述手柄联轴拨杆上设有拨块，所述拨块位于所述扇形槽内部，且所述拨块在所述扇形槽内的自由旋转角度略大于所述相邻火线断路器手柄驱动轮的合闸与掉闸旋转角度。
进一步改进在于：所述手柄联轴拨杆一端为非圆结构，且所述手柄联轴拨杆的非圆结构一端与所述相邻火线断路器手柄驱动轮连接，所述手柄联轴拨杆另一端为圆轴结构，且所述手柄联轴拨杆的圆轴结构一端与所述N极断路器触头机构驱动轮连接。
进一步改进在于：所述N极断路器触头机构驱动轮和相邻火线断路器手柄驱动轮之间通过手柄联轴拨杆串联。
进一步改进在于：所述N极断路器脱扣联杆插入到所述相邻火线断路器动触头运动机构的脱扣掉闸运动轨道末端。
进一步改进在于：所述N极断路器内部的N极断路器脱扣杠杆弹簧扭力大于所述相邻火线断路器内部的相邻火线断路器脱扣杠杆弹簧扭力。
进一步改进在于：所述N极断路器脱扣杠杆弹簧的钢丝直径大于相邻火线断路器脱扣杠杆弹簧的钢丝直径，所述N极断路器脱扣杠杆弹簧和相邻火线断路器脱扣杠杆弹簧的钢丝强度相同。
进一步改进在于：所述相邻火线断路器内部设置有相邻火线断路器储能挡块，所述N极断路器内部不设置储能装置。
本发明的有益效果为：1.本发明通过采用了N极断路器脱扣联杆与相邻火线断路器脱扣联杆形成交叉互插结构，构成相互触发脱扣的设计，相邻火线断路器的动触头脱离接触后相邻火线断路器动触头运动机构运动到即将到达终点时再击发N极断路器的N极断路器脱扣联杆动作，保证了N极断路器触头的断开与相邻火线断路器触头的断开产生明显的时间差，从而达到N极断路器不产生电弧的目的；
2.通过N极断路器脱扣杠杆弹簧扭力大于相邻火线断路器脱扣杠杆弹簧扭力的设置，让相邻火线断路器脱扣灵敏度远高于N极断路器，使得N极断路器的抗击震动(引发 先于相邻火线断路器的误脱扣)的能力远高于相邻火线断路器；
3.通过N极断路器触头机构驱动轮内部的扇形槽结构设计，克服了传统多极断路器手柄并联在一起，N极也不得不随同火线断路器同步断电的弊病，保证了手柄联轴拨杆上的拨块在扇形槽内具有一定的自由转动角度空间，达到N极断路器后断的目的；
4.通过相邻火线断路器增设相邻火线断路器储能挡块，N极断路器不设置储能装置的组合设计，可以保证当需要断路器接通电源做合闸动作时，相邻火线断路器动触头运动机构受到相邻火线断路器储能挡块的拦挡，而N极动触头运动机构没有受到阻挡，达到保证N极断路器先于相邻火线断路器接通电源的目的。
附图说明
图1为本发明N极断路器先通后断主视示意图。
图2为本发明N极先通后断单相断路器工作原理示意图。
图3为本发明N极先通后断单相断路器工作原理爆炸示意图。
图4为本发明N极先通后断三相断路器交叉脱扣原理示意图。
图5为本发明N极断路器触头机构驱动轮结构示意图。
图6为本发明N极断路器先通工作原理示意图。
其中：1、N极断路器；2、相邻火线断路器；3、N极断路器输出端子；4、N极断路器输入端子；5、N极断路器静触头；6、N极断路器动触头；7、N极断路器脱扣联杆；8、驱动臂；9、U型连杆；10、N极断路器触头机构驱动轮；11、N极断路器脱扣撞杆；12、N极动触头运动机构；13、N极断路器脱扣杠杆弹簧；14、相邻火线断路器脱扣联杆；15、相邻火线断路器手柄驱动轮；16、手柄联轴拨杆；17、相邻火线断路器脱扣杠杆弹簧；18、相邻火线断路器动触头运动机构；19、相邻火线断路器储能挡块；20、扇形槽；21、拨块；22、电磁脱扣器。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，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。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动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。
根据图1、2、3、4、5、6所示，本实施例提出一种N极不带灭弧装置的断路器，包括N极断路器1和相邻火线断路器2，所述N极断路器1两侧分别设有N极断路器输出端子3和N极断路器输入端子4，所述N极断路器1内部设有N极断路器静触头5、N极断路器动触头6和N极断路器脱扣联杆7，所述N极断路器脱扣联杆7上方设有驱动臂8，所述驱动臂8上连接有U型连杆9，所述U型连杆9另一侧与N极断路器触头机构驱动轮10相连，所述驱动臂8设置在N极动触头运动机构12上方，所述N极动触头运动机构12下方设有N极断路器脱扣撞杆11，所述N极断路器脱扣联杆7一侧设有N极断路器脱扣杠杆弹簧13，所述相邻火线断路器2内部设有相邻火线断路器脱扣联杆14、相邻火线断路器手柄驱动轮15、手柄联轴拨杆16、相邻火线断路器脱扣杠杆弹簧17和相邻火线断路器动触头运动机构18，所述N极断路器脱扣联杆7和相邻火线断路器脱扣联杆14形成交叉互插结构，所述N极断路器脱扣联杆7一端插设在所述相邻火线断路器动触头运动机构18内部，所述相邻火线断路器脱扣联杆14插设在所述N极断路器脱扣撞杆11右侧向上弯曲的端部并与之紧密接触，所述N极断路器脱扣撞杆11左侧端部连接有电磁脱扣器22。
所述N极断路器触头机构驱动轮10内部设有扇形槽20，所述手柄联轴拨杆16上设有拨块21，所述拨块21位于所述扇形槽20内部，且所述拨块21在所述扇形槽20内的自由旋转角度略大于所述相邻火线断路器手柄驱动轮15的合闸与掉闸旋转角度。所述手柄联轴拨杆16一端为非圆结构，且所述手柄联轴拨杆16的非圆结构一端与所述相邻火线断路器手柄驱动轮15连接，所述手柄联轴拨杆16另一端为圆轴结构，且所述手柄联轴拨杆16的圆轴结构一端与所述N极断路器触头机构驱动轮10连接。所述N极断路器触头机构驱动轮10和相邻火线断路器手柄驱动轮15之间通过手柄联轴拨杆16串联。所述N极断路器脱扣联杆7插入到所述相邻火线断路器动触头运动机构18的脱扣掉闸运动轨道末端。所述N极断路器1内部的N极断路器脱扣杠杆弹簧13扭力大于所述相邻火线断路器2内部的相邻火线断路器脱扣杠杆弹簧17扭力。所述N极断路器脱扣杠杆弹簧13的钢丝直径大于相邻火线断路器脱扣杠杆弹簧17的钢丝直径，所述N极断路器脱扣杠杆弹簧13和相邻火线断路器脱扣杠杆弹簧17的钢丝强度相同。所述相邻火线断路器2内部设置有相邻火线断路器储能挡块19，所述N极断路器1内部不设置储能装置。
N极断路器1自身的N极断路器脱扣联杆7延伸到相邻火线断路器2内部后，当相邻火线断路器2的触头脱离接触，直至所述相邻火线断路器2的相邻火线断路器动触头运动机构18运动到接近最远点时，才触动N极断路器脱扣联杆7，引发N极断路器1的 触头脱扣分离，此时相邻火线断路器2已经处于断电状态，则不会引发N极断路器1的动静触头产生电弧，在N极断路器触头机构驱动轮10内部设置一个扇形槽20，其他相邻火线断路器手柄驱动轮15由一个一端是非圆结构的手柄联轴拨杆16串联起来，确保各级相邻火线断路器2一起联动，而手柄联轴拨杆16另一端为圆轴结构，并且圆轴面上设置一个拨块21,圆轴端置于N极断路器1的N极断路器触头机构驱动轮10内，拨块21置于N极断路器触头机构驱动轮10内部的扇形槽20内，N极断路器1在合闸时与其它相邻火线断路器2同步，合闸时，N极断路器触头机构驱动轮10的合闸动作是受到手柄联轴拨杆16上的拨块21顺时针旋向拨动，带动U型连杆9以及N极动触头运动机构12与相邻火线断路器2同步顺时针旋转到达合闸位置，扇形槽20在扣除了拨块21所占槽内空间之外的扇形角度为拨块21可以在扇形槽20内做自由旋转的角度，而相邻火线断路器手柄驱动轮15的合闸与拉闸转角范围小于拨块21在扇形槽20内做自由旋转的角度，从而确保了相邻火线断路器手柄驱动轮15掉闸做逆时针旋转时手柄联轴拨杆16上的拨块21在扇形槽20内自由旋转不受干涉，从而也就不会引起N极断路器1与火线断路器同步掉闸，获得显著的N极后断效应。
本发明通过采用了N极断路器脱扣联杆7与相邻火线断路器脱扣联杆14形成交叉互插结构，构成相互触发脱扣的设计，相邻火线断路器2的动触头脱离接触后相邻火线断路器动触头运动机构18运动到即将到达终点时再击发N极断路器1的N极断路器脱扣联杆7动作，保证了N极断路器1触头的断开与相邻火线断路器2触头的断开产生明显的时间差，从而达到N极断路器1不产生电弧的目的。
通过N极断路器脱扣杠杆弹簧13扭力大于相邻火线断路器脱扣杠杆弹簧17扭力的设置，让相邻火线断路器2脱扣灵敏度远高于N极断路器1，使得N极断路器1的抗击震动(引发先于相邻火线断路器2的误脱扣)的能力远高于相邻火线断路器2。
通过N极断路器触头机构驱动轮10内部的扇形槽20结构设计，克服了传统多极断路器手柄并联在一起，N极也不得不随同火线断路器同步断电的弊病，保证了手柄联轴拨杆16上的拨块21在扇形槽20内具有一定的自由转动角度空间，达到N极断路器1后断的目的。
通过相邻火线断路器2增设相邻火线断路器储能挡块19，N极断路器不设置储能装置的组合设计，可以保证当需要断路器接通电源做合闸动作时，相邻火线断路器动触头运动机构18受到相邻火线断路器储能挡块19的拦挡，而N极动触头运动机构12没有受 到阻挡，达到保证N极断路器1先于相邻火线断路器2接通电源的目的。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，上实施例的所有具体措施都是独立的，实施其中任何一个举措都会降低N极断路器触头分离时产生电弧的风险，即便不全部采纳以上所述的举措同样构成对本发明权利的侵犯，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (8)

  1. 一种N极不带灭弧装置的断路器，其特征在于：包括N极断路器(1)和相邻火线断路器(2)，所述N极断路器(1)两侧分别设有N极断路器输出端子(3)和N极断路器输入端子(4)，所述N极断路器(1)内部设有N极断路器静触头(5)、N极断路器动触头(6)和N极断路器脱扣联杆(7)，所述N极断路器脱扣联杆(7)上方设有驱动臂(8)，所述驱动臂(8)上连接有U型连杆(9)，所述U型连杆(9)另一侧与N极断路器触头机构驱动轮(10)相连，所述驱动臂(8)设置在N极动触头运动机构(12)上方，所述N极动触头运动机构(12)下方设有N极断路器脱扣撞杆(11)，所述N极断路器脱扣联杆(7)一侧设有N极断路器脱扣杠杆弹簧(13)，所述相邻火线断路器(2)内部设有相邻火线断路器脱扣联杆(14)、相邻火线断路器手柄驱动轮(15)、手柄联轴拨杆(16)、相邻火线断路器脱扣杠杆弹簧(17)和相邻火线断路器动触头运动机构(18)，所述N极断路器脱扣联杆(7)和相邻火线断路器脱扣联杆(14)形成交叉互插结构，所述N极断路器脱扣联杆(7)一端插设在所述相邻火线断路器动触头运动机构(18)内部，所述相邻火线断路器脱扣联杆(14)插设在所述N极断路器脱扣撞杆(11)右侧向上弯曲的端部并与之紧密接触，所述N极断路器脱扣撞杆(11)左侧端部连接有电磁脱扣器(22)。
  2. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述N极断路器触头机构驱动轮(10)内部设有扇形槽(20)，所述手柄联轴拨杆(16)上设有拨块(21)，所述拨块(21)位于所述扇形槽(20)内部，且所述拨块(21)在所述扇形槽(20)内的自由旋转角度略大于所述相邻火线断路器手柄驱动轮(15)的合闸与掉闸旋转角度。
  3. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述手柄联轴拨杆(16)一端为非圆结构，且所述手柄联轴拨杆(16)的非圆结构一端与所述相邻火线断路器手柄驱动轮(15)连接，所述手柄联轴拨杆(16)另一端为圆轴结构，且所述手柄联轴拨杆(16)的圆轴结构一端与所述N极断路器触头机构驱动轮(10)连接。
  4. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述N极断路器触头机构驱动轮(10)和相邻火线断路器手柄驱动轮(15)之间通过手柄联轴拨杆(16)串联。
  5. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述N极断路器 脱扣联杆(7)插入到所述相邻火线断路器动触头运动机构(18)的脱扣掉闸运动轨道末端。
  6. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述N极断路器(1)内部的N极断路器脱扣杠杆弹簧(13)扭力大于所述相邻火线断路器(2)内部的相邻火线断路器脱扣杠杆弹簧(17)扭力。
  7. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述N极断路器脱扣杠杆弹簧(13)的钢丝直径大于相邻火线断路器脱扣杠杆弹簧(17)的钢丝直径，所述N极断路器脱扣杠杆弹簧(13)和相邻火线断路器脱扣杠杆弹簧(17)的钢丝强度相同。
  8. 根据权利要求1所述的一种N极不带灭弧装置的断路器，其特征在于：所述相邻火线断路器(2)内部设置有相邻火线断路器储能挡块(19)，所述N极断路器(1)内部不设置储能装置。
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