CN103903923A - Disconnector and operating mechanism thereof - Google Patents
Disconnector and operating mechanism thereof Download PDFInfo
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- CN103903923A CN103903923A CN201410160301.0A CN201410160301A CN103903923A CN 103903923 A CN103903923 A CN 103903923A CN 201410160301 A CN201410160301 A CN 201410160301A CN 103903923 A CN103903923 A CN 103903923A
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- iron core
- closing coil
- switching winding
- moving iron
- operating mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 117
- 230000003068 static effect Effects 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 83
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The invention discloses a disconnector and an operating mechanism thereof. The operating mechanism comprises a dynamic iron core, a static iron core and a permanent magnet. The static iron core is provided with an opening coil and a closing coil, and when the opening coil obtains electricity, the opening coil generates a magnetic field, so that the dynamic iron core is attracted to the opening coil; when the closing coil obtains electricity, the closing coil generates a magnetic field, so that the dynamic iron core is attracted to the closing coil. The permanent magnet is placed between the opening coil and the closing coil, and when the dynamic iron core is in contact with the opening coil, the permanent magnet attracts the dynamic iron core to the opening coil through the opening coil; when the dynamic iron core is in contact with the closing coil, the permanent magnet attracts the dynamic iron core to the closing coil through the closing coil. The operating mechanism is simple in structure, and capable of enabling the disconnector to be kept in a closing state or in an opening state under the outage condition.
Description
Technical field
The present invention relates to electric equipment technical field, relate in particular to a kind of circuit breaker and operating mechanism thereof.
Background technology
Vacuum circuit-breaker is to utilize a kind of circuit breaker of vacuum as arc-extinguishing medium and insulation protection; since hauling oneself willingly into use; just, long service life lightweight, simple in structure with it, need Maintenance and Repair hardly, without explosion hazard; especially can not developed rapidly advantages such as environments; become the main product in Medium voltage switch or circuit breaker field, and constantly develop to mesohigh field.
Vacuum circuit-breaker generally includes operating mechanism and contact mechanism, is controlled contact mechanism with circuit contact or is separated, and then realize conducting or the disconnection of circuit by operating mechanism.
The calutron of operating mechanism comprises solenoid and moving magnet, and the magnetic field producing by solenoid drives moving magnet to be displaced to the other end by one end of stroke, and then drives contact mechanism to realize conducting or the cut-off of circuit.
When solenoid passes into electric current, when inhale mutually with moving magnet in the magnetic field that solenoid produces, can make magnet move to solenoid direction, make magnet move to one end of stroke.In the time that solenoid passes into reverse current, magnetic field and moving magnet that solenoid produces repel each other, and then the moving magnet of promotion moves to the other end of stroke.In order to make magnet remain on stable state, in circuit breaker, also need to arrange the mechanical lock buckle of complicated structure.
Therefore, how reducing on the basis of circuit breaker internal structure complexity, can make circuit breaker remain on gate-dividing state or "on" position, become those skilled in the art's important technological problems to be solved.
Summary of the invention
The invention provides a kind of operating mechanism, it is simple in structure, and can be under off-position, circuit breaker is remained on and close a floodgate or gate-dividing state.The present invention also provides a kind of circuit breaker that comprises above-mentioned operating mechanism.
The operating mechanism of circuit breaker provided by the invention, comprising:
Moving iron core;
Static iron core, described static iron core is provided with switching winding and closing coil, and described switching winding obtains when electric, and described switching winding produces magnetic field, so that described moving iron core is adsorbed to described switching winding; Described closing coil obtains when electric, and described closing coil produces magnetic field, so that described moving iron core is adsorbed to described closing coil;
Be arranged at the permanent magnet between described switching winding and closing coil, when described moving iron core contacts with described switching winding, described permanent magnet is adsorbed on described moving iron core on described switching winding by described switching winding; When described moving iron core contacts with described closing coil, described permanent magnet is adsorbed on described moving iron core on described closing coil by described closing coil.
Preferably, also comprise the charging capacitor being connected with charging source by the first thyristor, described charging capacitor is connected with described switching winding by the second thyristor, is connected with described closing coil by the 3rd thyristor.
Preferably, described permanent magnet is folded between described switching winding and closing coil, and described permanent magnet and described switching winding and described closing coil are in contact.
Preferably, described permanent magnet is provided with the sliding eye passing for described moving iron core, and described moving iron core is socketed in described sliding eye slidably.
The present invention also provides a kind of circuit breaker, comprises operating mechanism and the contact mechanism by described operating mechanism control, and described operating mechanism is the as above operating mechanism described in any one.
Preferably, also comprise drive rod, one end of described drive rod is connected with described moving iron core, and the other end is connected with described contact mechanism.
Preferably, described circuit breaker is vacuum circuit-breaker.
The operating mechanism of circuit breaker provided by the invention, comprising: moving iron core; Static iron core, described static iron core is provided with switching winding and closing coil, and described switching winding obtains when electric, and described switching winding produces magnetic field, so that described moving iron core is adsorbed to described switching winding; Described closing coil obtains when electric, and described closing coil produces magnetic field, so that described moving iron core is adsorbed to described closing coil; Be arranged at the permanent magnet between described switching winding and closing coil, when described moving iron core contacts with described switching winding, described permanent magnet is adsorbed on described moving iron core on described switching winding by described switching winding; When described moving iron core contacts with described closing coil, described permanent magnet is adsorbed on described moving iron core on described closing coil by described closing coil.
So arrange, moving iron core provided by the invention has two poised states, there are two stable states: one is to obtain when electric when the switching winding of static iron core, closing coil is in power failure state, under the suction of switching winding moving iron core produce displacement and with switching winding adhesive, now, moving iron core and switching winding also fit, and be separated with closing coil, the magnetic flux of moving iron core will move iron core by switching winding and be adsorbed on switching winding, because the magnetic resistance that moves iron core and closing coil is because existing gap larger, the suction that the magnetic flux of permanent magnet forms moving iron core by closing coil is less.Therefore, moving iron core can be adsorbed on switching winding firmly by switching winding; In like manner, when the closing coil of static iron core obtains when electric, switching winding is in power failure state, under the suction of closing coil, moving iron core overcomes attraction and other resistance of itself and switching winding, produce displacement and with closing coil adhesive, now, moving iron core and closing coil also fit, and be separated with switching winding, the attraction that permanent magnet forms moving iron core by closing coil is larger, and the attraction moving iron core being formed by switching winding is less, therefore, moving iron core can be adsorbed on closing coil firmly by closing coil.When circuit breaker is under power failure state, also can make permanent magnet and closing coil or switching winding adhesive by manual control, and then iron core is adsorbed on closing coil or switching winding, make iron core in stable state.Therefore, operating mechanism provided by the invention, it is simple in structure, does not need to set up mechanical lock buckle and can realize maintenance combined floodgate or gate-dividing state.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is operating mechanism schematic diagram in the time of gate-dividing state in the specific embodiment of the invention;
Fig. 2 is operating mechanism schematic diagram in the time of "on" position in the specific embodiment of the invention;
Fig. 3 is vacuum circuit-breaker schematic diagram in the specific embodiment of the invention;
In Fig. 1 to Fig. 3:
Permanent magnet-10, moving iron core-11, static iron core-12, switching winding-13, closing coil-14, charging capacitor-15, the first thyristor-16, the second thyristor-17, the 3rd thyristor-18, contact mechanism-19.
Embodiment
This embodiment provides a kind of operating mechanism, and it can be under off-position, circuit breaker is remained on and close a floodgate or gate-dividing state.This embodiment also provides a kind of circuit breaker that comprises above-mentioned operating mechanism.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1-Fig. 3, the operating mechanism of the circuit breaker that this embodiment provides, comprising: moving iron core 11;
Be arranged at the permanent magnet 10 between switching winding 13 and closing coil 14, when moving iron core 11 contacts with switching winding 13, permanent magnet 10 will move iron core 11 by switching winding 13 and be adsorbed on switching winding 13; When moving iron core 11 contacts with closing coil 14, permanent magnet 10 will move iron core 11 by closing coil 14 and be adsorbed on closing coil 14.
So arrange, the moving iron core 11 that this embodiment provides has two poised states, have two stable states: one be when the switching winding 13 of static iron core 12 when electric, closing coil 14 is in power failure state, under the suction of switching winding 13 moving iron core 11 produce displacement and with switching winding 13 adhesives, now, moving iron core 11 also fits with switching winding 13, and be separated with closing coil 14, the magnetic flux of moving iron core 11 will move iron core 11 by switching winding 13 and be adsorbed on switching winding 13, because the magnetic resistance that moves iron core 11 and closing coil 14 is because existing gap larger, the suction that the magnetic flux of permanent magnet 10 forms moving iron core 11 by closing coil 14 is less.Therefore, moving iron core 11 can be adsorbed on switching winding 13 firmly by switching winding 13, in like manner, when the closing coil 14 of static iron core 12 when electric, switching winding 13 is in power failure state, under the suction of closing coil 14, moving iron core 11 overcomes attraction and other resistance of itself and switching winding 13, produce displacement and with closing coil 14 adhesives, now, moving iron core 11 also fits with closing coil 14, and be separated with switching winding 13, the attraction that permanent magnet 10 forms moving iron core 11 by closing coil 14 is larger, and the attraction moving iron core 11 being formed by switching winding 13 is less, therefore, moving iron core 11 can be adsorbed on closing coil 14 firmly by closing coil 14.When circuit breaker is under power failure state, also can make permanent magnet 10 and closing coil 14 or switching winding 13 adhesives by manual control, and then iron core 11 is adsorbed on closing coil 14 or switching winding 13, make iron core 11 in stable state.Therefore, the operating mechanism that this embodiment provides, it is simple in structure, does not need to set up mechanical lock buckle and can realize maintenance combined floodgate or gate-dividing state.
In addition, it should be noted that, when operating mechanism is during in "on" position, make its separating brake, as long as pass to direct current in switching winding 13, the magnetic line of force direction that this electric current produces and permanent magnet 10 are near the magnetic line of force opposite direction of closing coil 14.The magnetic field that electric current in switching winding 13 produces reduces the suffered suction of iron core 11, in the time that this electric current increases to certain value, the moving suffered suction sum of iron core 11 is less than the mechanical load on moving iron core 11, and at this moment moving iron core 11 is just by the direction motion of switching winding 13.Once moving iron core 11, to switching winding 13 direction motions, has just occurred air gap between moving iron core 11 lower ends and closing coil 14, magnetic resistance increases, and the magnetic resistance between moving iron core 11 and switching winding 13 reduces.Closing coil 14 reduces the suction of moving iron core 11, and switching winding 13 increases the suction of moving iron core 11, and then makes iron core 11 accelerate to move upward.This process is continued until that moving iron core 11 contacts with switching winding 13, until complete separating brake action.At this moment, moving iron core 11 is again by permanent magnet 10 adhesives, and in stable state, even if cut off the electric current of switching winding 13, moving iron core 11 also can not return to "on" position.Making process and separating brake process are just in time contrary, do not repeat them here.
The operating mechanism providing due to this embodiment, no matter permanent magnet 10 is closing a floodgate still in separating brake process, the external magnetic field that coil current produces is always identical with the direction of permanent magnet 10 self-fields on permanent magnet 10, therefore permanent magnet 10 is at work without demagnetisation, the problem of having avoided permanent magnet 10 to demagnetize.
In addition, the operating mechanism that this embodiment provides, can also comprise the charging capacitor 15 being connected with charging source by the first thyristor 16, charging capacitor 15 is connected with switching winding 13 by the second thyristor 17, is connected with closing coil 14 by the 3rd thyristor 18.
So arrange, charging capacitor 15 can provide excitatory energy for operating mechanism, and three thyristor switchs are for the conducting of control circuit and the flow direction of electric current.
Operating mechanism is in the time of gate-dividing state, and the first thyristor 16 is in conducting state, and the second thyristor 17 and the second thyristor 17 are all in cut-off state.Direct voltage charges to charging capacitor 15 through the first thyristor 16.In the time applying triggering signal to the base stage of the 3rd thyristor 18 to make it conducting, discharge loop conducting, charging capacitor 15 discharges to closing coil 14 through the 3rd thyristor 18, and then completes feed motion.The triggering signal of now removing the 3rd thyristor 18 makes it cut-off.In like manner, in the time of the second thyristor 17 conducting, charging capacitor 15 discharges to switching winding 13, can make circuit breaker complete separating brake action.
In addition, it should be noted that, permanent magnet 10 can be folded between switching winding 13 and closing coil 14, and permanent magnet 10 is in contact with switching winding 13 and closing coil 14.
So arrange, between permanent magnet 10 and switching winding 13 and closing coil 14, do not have gap, magnetic resistance is less.In the time that moving iron core 11 is pulled together with switching winding 13, very close to each other between moving iron core 11 and switching winding 13, magnetic resistance between the two is less, and there is gap between moving iron core 11 and closing coil 14, magnetic resistance is larger, therefore moving iron core 11 can be adsorbed on switching winding 13 securely by permanent magnet 10.Equally, in the time that moving iron core 11 is pulled together with closing coil 14, very close to each other between moving iron core 11 and closing coil 14, magnetic resistance between the two is less, and there is gap between moving iron core 11 and switching winding 13, magnetic resistance is larger, therefore moving iron core 11 can be adsorbed on closing coil 14 securely by permanent magnet 10.
In addition, permanent magnet 10 can be provided with the sliding eye passing for moving iron core 11, and moving iron core 11 is socketed in sliding eye slidably.So arrange, moving iron core 11 is enclosed within permanent magnet 10 inside, and moving iron core 11 with permanent magnet 10 for coordinating relative sliding, can effectively prevent the problem of leakage field.And sliding eye can make iron core 11 have good stability in sliding process.
This embodiment also provides a kind of circuit breaker, comprises operating mechanism and the contact mechanism 19 by operating mechanism control, and this operating mechanism is operating mechanism as above.
So arrange, the circuit breaker that this embodiment provides, it is simple in structure, and can be under off-position, remains on and closes a floodgate or gate-dividing state.
The circuit breaker that this embodiment provides can also comprise drive rod, and one end of drive rod is connected with moving iron core 11, and the other end is connected with contact mechanism 19.So arrange, the displacement repeatedly of moving iron core 11 can or be opened by drive rod band dynamic contact mechanism 19 closures.
It should be noted that, the circuit breaker that this embodiment provides can be specially vacuum circuit-breaker, certainly, also can be the circuit breaker of other type, such as oil circuit breaker, compressed-air circuit breaker etc.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. an operating mechanism for circuit breaker, is characterized in that, comprising:
Moving iron core;
Static iron core, described static iron core is provided with switching winding and closing coil, and described switching winding obtains when electric, and described switching winding produces magnetic field, so that described moving iron core is adsorbed to described switching winding; Described closing coil obtains when electric, and described closing coil produces magnetic field, so that described moving iron core is adsorbed to described closing coil;
Be arranged at the permanent magnet between described switching winding and closing coil, when described moving iron core contacts with described switching winding, described permanent magnet is adsorbed on described moving iron core on described switching winding by described switching winding; When described moving iron core contacts with described closing coil, described permanent magnet is adsorbed on described moving iron core on described closing coil by described closing coil.
2. operating mechanism as claimed in claim 1, it is characterized in that, also comprise the charging capacitor being connected with charging source by the first thyristor, described charging capacitor is connected with described switching winding by the second thyristor, is connected with described closing coil by the 3rd thyristor.
3. operating mechanism as claimed in claim 1, is characterized in that, described permanent magnet is folded between described switching winding and closing coil, and described permanent magnet and described switching winding and described closing coil are in contact.
4. operating mechanism as claimed in claim 1, described permanent magnet is provided with the sliding eye passing for described moving iron core, and described moving iron core is socketed in described sliding eye slidably.
5. a circuit breaker, comprises operating mechanism and the contact mechanism by described operating mechanism control, it is characterized in that, described operating mechanism is the operating mechanism as described in claim 1-4 any one.
6. circuit breaker as claimed in claim 5, is characterized in that, also comprises drive rod, and one end of described drive rod is connected with described moving iron core, and the other end is connected with described contact mechanism.
7. circuit breaker as claimed in claim 5, is characterized in that, described circuit breaker is vacuum circuit-breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160301.0A CN103903923A (en) | 2014-04-21 | 2014-04-21 | Disconnector and operating mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160301.0A CN103903923A (en) | 2014-04-21 | 2014-04-21 | Disconnector and operating mechanism thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103903923A true CN103903923A (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410160301.0A Pending CN103903923A (en) | 2014-04-21 | 2014-04-21 | Disconnector and operating mechanism thereof |
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| CN (1) | CN103903923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN110098094A (en) * | 2019-06-21 | 2019-08-06 | 安徽科盟电子科技有限公司 | A kind of breaker electromagnetic operating mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626038Y (en) * | 2003-06-27 | 2004-07-14 | 沈阳工业大学 | Dual coil bistable permanent magnet operation mechanism |
| CN201302946Y (en) * | 2008-10-29 | 2009-09-02 | 国网武汉高压研究院 | Permanent magnetic actuator for vacuum circuit breaker supplied with power by super capacitor |
| CN202373516U (en) * | 2011-11-18 | 2012-08-08 | 埃尔凯电器（珠海）有限公司 | Double-opening-speed permanent-magnet operation mechanism |
| CN103560040A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Permanent magnetic operating mechanism of intelligent circuit breaker |
| CN203799984U (en) * | 2014-04-21 | 2014-08-27 | 国家电网公司 | Circuit breaker and operating mechanism thereof |
-
2014
- 2014-04-21 CN CN201410160301.0A patent/CN103903923A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626038Y (en) * | 2003-06-27 | 2004-07-14 | 沈阳工业大学 | Dual coil bistable permanent magnet operation mechanism |
| CN201302946Y (en) * | 2008-10-29 | 2009-09-02 | 国网武汉高压研究院 | Permanent magnetic actuator for vacuum circuit breaker supplied with power by super capacitor |
| CN202373516U (en) * | 2011-11-18 | 2012-08-08 | 埃尔凯电器（珠海）有限公司 | Double-opening-speed permanent-magnet operation mechanism |
| CN103560040A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Permanent magnetic operating mechanism of intelligent circuit breaker |
| CN203799984U (en) * | 2014-04-21 | 2014-08-27 | 国家电网公司 | Circuit breaker and operating mechanism thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN110098094A (en) * | 2019-06-21 | 2019-08-06 | 安徽科盟电子科技有限公司 | A kind of breaker electromagnetic operating mechanism |
| CN110098094B (en) * | 2019-06-21 | 2023-11-21 | 安徽科盟电子科技有限公司 | Electromagnetic operating mechanism of circuit breaker |
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| ASS | Succession or assignment of patent right |
Owner name: QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIB Free format text: FORMER OWNER: QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIBEI ELECTRIC POWER COMPANY LTD. Effective date: 20140617 |
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Effective date of registration: 20140617 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Qinhuangdao Power Supply Company of State Grid Jibei Electric Power Company Limited Applicant after: Beijing Zhongdian Li'neng Technology Development Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: Qinhuangdao Power Supply Company of State Grid Jibei Electric Power Company Limited |
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Application publication date: 20140702 |