CN106449264A - Double-break vacuum circuit breaker used for 66 KV - Google Patents
Double-break vacuum circuit breaker used for 66 KV Download PDFInfo
- Publication number
- CN106449264A CN106449264A CN201610790896.7A CN201610790896A CN106449264A CN 106449264 A CN106449264 A CN 106449264A CN 201610790896 A CN201610790896 A CN 201610790896A CN 106449264 A CN106449264 A CN 106449264A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- fracture
- repulsive force
- double
- vacuum circuit
- 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.)
- Pending
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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a double-break vacuum circuit breaker used for 66 KV. The vacuum circuit breaker comprises two break devices with the same structure, each break device is arranged in a vacuum arc-extinguishing chamber, the break device comprises a static contact and a moving contact, a vacuum gap is reserved between the static contact and the moving contact, tail portions of the moving contacts at two sides are connected in series through a connecting rod, the connecting rod is provided with a bidirectional repulsive force mechanism and a permanent magnet maintenance mechanism in sequence, the bidirectional repulsive force mechanism comprises a metal repulsive force disc, the connecting rod is also provided with an upper fixing plate and a lower fixing plate parallel to the metal repulsive force disc, the metal repulsive force disc is located between the upper fixing plate and the lower fixing plate, the lower end surface of the upper fixing plate is fixedly connected with a switch-off coil, and the upper end surface of the lower fixing plate is provided with a switch-on coil. The beneficial effects of the vacuum circuit breaker are that the on-off 66 KV voltage level is realized through double breaks, the double breaks are linked by employing an electromagnetic repulsive force, a mechanical locking structure is avoided, fault sources are less, the usage reliability is high, the operation precision and the synchronism of the break devices are high, and the reaction can reach a microsecond level.
Description
Technical field
The invention belongs to vacuum circuit breaker field, especially relates to a kind of double-fracture formula vacuum circuit breaker for 66KV.
Background technology
In 66kV electric pressure, sulfur hexafluoride (SF6) chopper accounts for the overwhelming majority of this electric pressure, and SF6For temperature
Room gas, its impact is more than CO225000 times, significant damage is caused for environment, and vacuum circuit breaker then will not be to greenhouse
Effect produces impact, belongs to sustainable development direction, but the vacuum circuit breaker of single break, it is difficult to accomplish the electric pressure of 66KV；
In vacuum circuit breaker, the breakdown voltage of vacuum gap has clear and definite relation with gap, and experiment shows：Work as clearance gap
From during less than 0.5cm, with the increase of clearance distance, breakdown voltage U linearly increases；When clearance distance is larger, clearance gap
From no longer linear with breakdown voltage, as shown in Figure 1.That is there is saturation effect between breakdown voltage and gap length
Should, under long vacuum gap, the resistance to voltage levels of vacuum circuit breaker can not be obtained by the simple length for increasing vacuum gap, because
This is under 66kV electric pressure, and single break vacuum circuit breaker cannot meet requirement.
Content of the invention
In view of this, it is contemplated that proposing a kind of double-fracture formula vacuum circuit breaker for 66KV, by double break cause for gossip
Existing break-make 66KV electric pressure, double-fracture is linked using electromagnetic repulsion force, mechanical buckle structure, and the source of trouble is few, using reliability
Height, fracture device actuating precision and synchronicity height, reaction can reach delicate rank.
For above-mentioned purpose is reached, the technical scheme is that and be achieved in that：
A kind of double-fracture formula vacuum circuit breaker for 66KV, including two structure identical fracture devices, described in each
Fracture device is arranged in vacuum extinction room, and the fracture device includes static contact and moving contact, the static contact and described dynamic
Vacuum gap is left between contact, and the moving contact afterbody of both sides is connected in series by trace, on the trace successively
It is provided with two-way repulsive force mechanism and permanent magnet maintaining body；
The two-way repulsive force mechanism includes the metal repulsion dish being vertically connected on the trace, on the trace also
Upper mounted plate and the bottom plate being provided with parallel to the metal repulsion dish, and the metal repulsion dish are positioned at fixed
Between plate and the bottom plate, the lower surface of fixed plate is fixedly connected with switching winding, the bottom plate upper
End face is fixedly connected with closing coil；
Further, the afterbody of the trace is additionally provided with permanent magnet maintaining body, and the permanent magnet maintaining body includes
Stabilizing base and the dynamic iron core being arranged in the stabilizing base, combined floodgate keep Magnet and separating brake to keep Magnet, the dynamic ferrum
Core is connected in the tail end of the trace, and the combined floodgate keeps Magnet to be arranged on dynamic iron core upper end both sides, described point
Lock keeps Magnet to be arranged on the lower end both sides of the dynamic iron core.
Further, the trace is provided with excess of stroke device, and the excess of stroke device is arranged on the two-way repulsive force mechanism
Top.
Further, the fracture device is 35KV fracture.
Further, the metal repulsion dish are cylindrical copper dish.
With respect to prior art, the double-fracture formula vacuum circuit breaker for 66KV of the present invention has the advantage that：
The present invention adopts two structure identical vacuum fracture devices, and each fracture device is 35KV vacuum fracture,
Solve the problems, such as that single break vacuum circuit breaker increases merely vacuum gap and can not meet 66KV electric pressure, compared to lithium
Sulfur chopper, vacuum circuit breaker does not contain SF6Greenhouse gases, do not result in greenhouse and pollute, and two fracture devices
Moving contact tail end is connected in series by trace, meets synchronicity and pressure requirement, thus by 66kV vacuum circuit breaker
One long gap becomes two short air gaps, it is to avoid there is saturability between breakdown voltage and gap length.
The switching winding of two-way repulsive force mechanism and closing coil can receive to control discharge signal, during separating brake, by separating brake line
Electric discharge is enclosed, instantaneous variation magnetic field is produced, the vortex that the sensing of metal repulsion dish is produced forms opposing magnetic field, causes and produce downward pushing away
Repulsion, drives downwards trace to move by metal repulsion dish, and the moving contact so as to drive vacuum interrupter is moved downward, with stationary contact
Head is separated, and disconnects power circuit, and vacuum interrupter can be put out rapidly after making circuitry cuts power supply by the superior isolation of interior vacuum
Arc simultaneously suppresses electric current；During combined floodgate, discharged by closing coil, produce instantaneous variation magnetic field, the vortex that the sensing of metal repulsion dish is produced
Opposing magnetic field being formed, the repulsive force for producing upwards is caused, trace motion is brought up by metal repulsion dish, so as to drive vacuum
The moving contact of arc-chutes is moved upwards, is contacted with static contact, connects power circuit.Dynamic touched by what two-way repulsive force mechanism drove
Head, switch off time is less than 5ms, and closing time is less than 10ms, and reaction reaches delicate rank, and actuating is precisely quick.
The dynamic iron core of permanent magnet maintaining body can be moved with trace afterbody, when the downward separating brake of trace, dynamic iron core
Can with below separating brake keep Magnet inhale and, holding moving contact open position；When trace is closed a floodgate upwards, dynamic iron core
Can with its above combined floodgate keep Magnet inhale and, holding moving contact closing position.Help to maintain moving contact separating brake or conjunction
The accuracy of gate position, reaches self-sustaining effect.
Excess of stroke device is existing device, helps to ensure that contact pressure, reduces wiper resistance.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for the present invention is explained, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the graph of a relation between breakdown voltage or breakdown field strength and vacuum gap length；
Fig. 2 is the structural representation of the embodiment of the present invention.
Description of reference numerals：
1- fracture device；11- static contact；12- moving contact；13- vacuum gap；2- vacuum interrupter；3- trace；4- is double
To repulsive force mechanism；41- metal repulsion dish；42- upper mounted plate；43- bottom plate；44- switching winding；45- closing coil；5- is forever
Magnet maintaining body；51- stabilizing base；52- moving magnet；53- closes a floodgate and keeps Magnet；54- separating brake keeps Magnet；The 6- excess of stroke is filled
Put.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combine.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,
The orientation of instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Show that the device of indication or element must be with specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
To be to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As shown in Fig. 2 the present invention provides a kind of double-fracture formula vacuum circuit breaker for 66KV, identical including two structures
Fracture device 1, each described fracture device 1 is arranged in vacuum interrupter 2, and the fracture device 1 includes 11 He of static contact
Moving contact 12, leaves vacuum gap 13,12 afterbody of the moving contact of both sides between the static contact 11 and the moving contact 12
It is connected in series by trace 3, on the trace 3, is sequentially provided with two-way repulsive force mechanism 4 and permanent magnet maintaining body 5；
The two-way repulsive force mechanism 4 includes the metal repulsion dish 41 being vertically connected on the trace 3, the trace
Upper mounted plate 42 and the bottom plate 43 being additionally provided with 3 parallel to the metal repulsion dish 41, and the metal repulsion dish 41
Between fixed plate 42 and the bottom plate 43, the lower surface of fixed plate 42 is fixedly connected with separating brake line
Circle 44, the upper surface of the bottom plate 43 is fixedly connected with closing coil 45；
The afterbody of the trace 3 is additionally provided with permanent magnet maintaining body 5, and the permanent magnet maintaining body 5 includes to stablize base
Seat 51 and the dynamic iron core 52 being arranged in the stabilizing base 51, combined floodgate keep Magnet 53 and separating brake to keep Magnet 54, described
Dynamic iron core 52 is connected in the tail end of the trace 3, and the combined floodgate keeps Magnet 53 to be arranged on 52 upper end of the dynamic iron core
Both sides, the separating brake keeps Magnet 54 to be arranged on the lower end both sides of the dynamic iron core 52.
The trace 3 is provided with excess of stroke device 6, and the excess of stroke device 6 is arranged on the upper of the two-way repulsive force mechanism 4
Side.
The fracture device 1 is 35KV fracture.
The metal repulsion dish 41 are cylindrical copper dish.
The work process of this example：The switching winding 44 of two-way repulsive force mechanism 4 and closing coil 45 receive control electric discharge letter
Number, during separating brake, to be discharged by switching winding 44, instantaneous variation magnetic field is produced, metal repulsion dish 41 sense the vortex for producing and are formed instead
To magnetic field, cause and downward repulsive force is produced, drive downwards trace 3 to move by metal repulsion dish 41, so as to drive vacuum to go out
The moving contact 12 of arc chamber 2 is moved downward, and is separated with static contact 11, disconnects power circuit, and vacuum interrupter 2 is exhausted by interior vacuum
Edge, rapid blow-out simultaneously suppresses electric current, 3 tail end of trace connection dynamic iron core 52 with below separating brake holding Magnet 54 inhale
With the open position of holding moving contact 12；During combined floodgate, discharged by closing coil 45, produce instantaneous variation magnetic field, metal repulsion dish
The vortex that 41 sensings are produced forms opposing magnetic field, causes the repulsive force for producing upwards, brings up gearing by metal repulsion dish 41
Bar moves, and the moving contact 12 so as to drive vacuum interrupter 2 is moved upwards, is contacted with static contact 11, connects power circuit, dynamic ferrum
Core 52 with its above combined floodgate keep Magnet 53 to inhale and, the closing position of holding moving contact 12.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement that is made etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of double-fracture formula vacuum circuit breaker for 66KV, it is characterised in that：Including two structure identical fracture devices,
Each described fracture device is arranged in vacuum extinction room, and the fracture device includes static contact and moving contact, the static contact
Vacuum gap is left and the moving contact between, and the moving contact afterbody of both sides is connected in series by trace, the gearing
Bar is provided with two-way repulsive force mechanism；
The two-way repulsive force mechanism includes the metal repulsion dish being vertically connected on the trace, also sets up on the trace
Be parallel to upper mounted plate and the bottom plate of the metal repulsion dish, and the metal repulsion dish be located at fixed plate and
Between the bottom plate, the lower surface of fixed plate is fixedly connected with switching winding, the upper surface of the bottom plate
It is fixedly connected with closing coil.
2. the double-fracture formula vacuum circuit breaker for 66KV according to claim 1, it is characterised in that：The trace
Afterbody is additionally provided with permanent magnet maintaining body, and the permanent magnet maintaining body includes stabilizing base and is arranged at the stabilizing base
Interior dynamic iron core, combined floodgate keep Magnet and separating brake to keep Magnet, and the dynamic iron core is connected in the tail end of the trace, institute
Stating combined floodgate keeps Magnet to be arranged on dynamic iron core upper end both sides, and the separating brake keeps Magnet to be arranged on the lower end of the dynamic iron core
Both sides.
3. the double-fracture formula vacuum circuit breaker for 66KV according to claim 1, it is characterised in that：On the trace
Excess of stroke device is provided with, the excess of stroke device is arranged on the top of the two-way repulsive force mechanism.
4. the double-fracture formula vacuum circuit breaker for 66KV according to claim 1 or 2 any one, it is characterised in that：Institute
Fracture device is stated for 35KV fracture.
5. the double-fracture formula vacuum circuit breaker for 66KV according to claim 1 or 2 any one, it is characterised in that：Institute
Metal repulsion dish are stated for cylindrical copper dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790896.7A CN106449264A (en) | 2016-08-31 | 2016-08-31 | Double-break vacuum circuit breaker used for 66 KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790896.7A CN106449264A (en) | 2016-08-31 | 2016-08-31 | Double-break vacuum circuit breaker used for 66 KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106449264A true CN106449264A (en) | 2017-02-22 |
Family
ID=58163893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610790896.7A Pending CN106449264A (en) | 2016-08-31 | 2016-08-31 | Double-break vacuum circuit breaker used for 66 KV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106449264A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481889A (en) * | 2017-07-19 | 2017-12-15 | 西安交通大学 | A kind of vacuum interrupter from actuating and its from actuating method |
| CN107731616A (en) * | 2017-11-16 | 2018-02-23 | 中国科学院电工研究所 | Parallel series multi-break arc-chutes |
| CN108010792A (en) * | 2017-12-21 | 2018-05-08 | 安徽宇腾真空电气有限责任公司 | A kind of extra-high voltage direct-current permanent magnetism mixing breaker |
| CN108878211A (en) * | 2018-08-29 | 2018-11-23 | 浙江紫光电器有限公司 | A kind of synchronization mechanism of high pressure double break circuit breaker |
| CN113921301A (en) * | 2020-07-10 | 2022-01-11 | 南京南瑞继保电气有限公司 | Three-phase electromagnetic operating mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000331576A (en) * | 1999-05-24 | 2000-11-30 | Mitsubishi Electric Corp | Vacuum breaker device |
| CN1362716A (en) * | 2000-12-30 | 2002-08-07 | 李建蓉 | Vacuum arc-extinguishing chamber of 66KV and over voltage |
| CN201788887U (en) * | 2010-07-27 | 2011-04-06 | 国网电力科学研究院 | Direct-acting vacuum breaker equipped with bistable permanent-magnetic operating mechanism |
| CN105762010A (en) * | 2016-04-26 | 2016-07-13 | 国家电网公司 | High-speed switch based on permanent magnet holding mechanism |
| CN206098278U (en) * | 2016-08-31 | 2017-04-12 | 国网内蒙古东部电力有限公司检修分公司 | A double break mouth formula vacuum circuit breaker for 66KV |
-
2016
- 2016-08-31 CN CN201610790896.7A patent/CN106449264A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000331576A (en) * | 1999-05-24 | 2000-11-30 | Mitsubishi Electric Corp | Vacuum breaker device |
| CN1362716A (en) * | 2000-12-30 | 2002-08-07 | 李建蓉 | Vacuum arc-extinguishing chamber of 66KV and over voltage |
| CN201788887U (en) * | 2010-07-27 | 2011-04-06 | 国网电力科学研究院 | Direct-acting vacuum breaker equipped with bistable permanent-magnetic operating mechanism |
| CN105762010A (en) * | 2016-04-26 | 2016-07-13 | 国家电网公司 | High-speed switch based on permanent magnet holding mechanism |
| CN206098278U (en) * | 2016-08-31 | 2017-04-12 | 国网内蒙古东部电力有限公司检修分公司 | A double break mouth formula vacuum circuit breaker for 66KV |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481889A (en) * | 2017-07-19 | 2017-12-15 | 西安交通大学 | A kind of vacuum interrupter from actuating and its from actuating method |
| CN107481889B (en) * | 2017-07-19 | 2019-04-16 | 西安交通大学 | A kind of vacuum interrupter from actuating and its from actuating method |
| CN107731616A (en) * | 2017-11-16 | 2018-02-23 | 中国科学院电工研究所 | Parallel series multi-break arc-chutes |
| CN108010792A (en) * | 2017-12-21 | 2018-05-08 | 安徽宇腾真空电气有限责任公司 | A kind of extra-high voltage direct-current permanent magnetism mixing breaker |
| CN108878211A (en) * | 2018-08-29 | 2018-11-23 | 浙江紫光电器有限公司 | A kind of synchronization mechanism of high pressure double break circuit breaker |
| CN113921301A (en) * | 2020-07-10 | 2022-01-11 | 南京南瑞继保电气有限公司 | Three-phase electromagnetic operating mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106449264A (en) | Double-break vacuum circuit breaker used for 66 KV | |
| CN104576175B (en) | High-voltage double-break circuit breaker | |
| US20120274428A1 (en) | Circuit-breaker with a common housing | |
| US9208966B2 (en) | Switch | |
| KR101704807B1 (en) | operation device using electromagnetic repulsion force for circuit breaker | |
| CN102280304B (en) | Moving contact assembly and intelligent electromagnetic isolation driving switch applying same | |
| CN107359067B (en) | Miniature circuit breaker with stronger arc extinguishing ability | |
| CN104576165B (en) | Stroke-controllable circuit breaker | |
| CN208548316U (en) | A kind of novel contact component | |
| CN206098278U (en) | A double break mouth formula vacuum circuit breaker for 66KV | |
| CN101329964A (en) | Non-SF6 gas insulative outdoor high voltage vacuum breaker | |
| US5734547A (en) | Power switchgear | |
| CN204303671U (en) | The operating mechanism of a kind of pair of moving contact breaker | |
| CN203536287U (en) | Low-voltage permanent magnetic vacuum contactor | |
| US3872272A (en) | Circuit breaker | |
| US3745281A (en) | Gas-blast circuit breaker having a floating puffer piston driven by electromagnetic force | |
| CN114783816B (en) | Circuit breaker | |
| CN202094043U (en) | Moving contact assembly and electromagnetic isolation driving intelligent switch using same | |
| CN107622908B (en) | Movable double-loop contact structure and vacuum arc-extinguishing chamber | |
| CN104465205A (en) | Twin-port vacuum circuit breaker | |
| GB514217A (en) | Improvements in or relating to electric circuit breakers suitable for high-voltage systems | |
| CN101847538B (en) | Electronic electromagnetic intelligent switch | |
| CN104465256B (en) | Arc extinguishing chamber for isolation breaker and isolation breaker comprising same | |
| CN204289245U (en) | A kind of two dynamic vacuum interrupter with permanent magnet mechanism | |
| CN102915894B (en) | Arc-blowing device of direct-current circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |