CN103050320A - Miniaturized large-current handcart-type vacuum circuit breaker - Google Patents
Miniaturized large-current handcart-type vacuum circuit breaker Download PDFInfo
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- CN103050320A CN103050320A CN2011101246772A CN201110124677A CN103050320A CN 103050320 A CN103050320 A CN 103050320A CN 2011101246772 A CN2011101246772 A CN 2011101246772A CN 201110124677 A CN201110124677 A CN 201110124677A CN 103050320 A CN103050320 A CN 103050320A
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- synchronizing shaft
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Abstract
The invention relates to a miniaturized large-current handcart-type vacuum circuit breaker, which comprises a frame main body, three-phase vacuum circuit breaking poles, a synchronizing shaft and auxiliary contacts of the synchronizing shaft. The three-phase vacuum circuit breaking poles are arranged at the upper part of the frame main body. The synchronizing shaft and the auxiliary contacts of the synchronizing shaft are arranged in a metal frame. Each of the three-phase vacuum circuit breaking pole is provided with a vacuum arc extinguishing chamber, an insulated pull rod and a permanent magnet operating mechanism which are longitudinally and sequentially arranged from top to bottom. The vacuum arc extinguishing chamber comprises an upper wiring terminal, a lower wiring terminal, a corrugated pipe and a ceramic chamber. The corrugated pipe is arranged outside the ceramic chamber and is connected with the lower end of the ceramic chamber. One end of the insulated pull rod is connected with a movable contact. The movable contact is matched with the corrugated pipe. The other end of the insulated pull rod is connected with the permanent magnet operating mechanism. The three-phase permanent operating mechanisms of the three-phase vacuum circuit breaking poles are respectively connected with the synchronizing shaft. The miniaturized large-current handcart-type vacuum circuit breaker has the advantages of small size, light weight, long service life, maintenance-free, high flexibility and convenience in use.
Description
Technical field
The invention belongs to high voltage switchgear, be applicable to various handcart switch cabinets, close, carry, cut-off the operating loop normal current in order to the pass, also can close at the appointed time the Miniaturized high-current vehicle-type vacuum breaker of the overload current (comprising short circuit current) that closes, carries and cut-off regulation.
Background technology
Arrange before and after traditional vacuum circuit-breaker is generally: the front is the three-phase vacuum circuit breaker, the back is an operating mechanism, this operating mechanism is by rotating shaft, connecting lever, the machine driving such as connecting rod are delivered to the three-phase arc control device, the required operating work of arc control device is responsible for the kinetic energy of a mechanism is delivered to the three-phase moving contact of vacuum circuit-breaker by this transmission mechanism, this drive system comprises switching winding, energy storage motor, mechanical lock buckle, gear, chain, the parts such as connecting rod, structure and transmission process are extremely complicated, volume is large, and manufacturing cost and the operating cost of relative complete set of equipments are high.In addition, closing a floodgate keeps all needing to adopt mechanical lock buckle, and these machine components all bear mechanical shock in deciliter operating process each time, very easily damage, and be the main cause of circuit breaker generation mechanical breakdown.
Since operating mechanism drive the three-phase vacuum circuit breaker deciliter, power is large, loss is high, and if operating mechanism go wrong, the three-phase vacuum circuit breaker all cannot be worked, and brings larger loss to production.
In addition, bellows is one of core component of vacuum interrupter, during use its moving contact with arc control device is welded together and reciprocating with moving contact in the divide-shut brake process.Because bellows belongs to the elastic packing principle, therefore when the moving contact with arc control device moves within the specific limits, also guaranteed the condition of high vacuum degree of vacuum interrupter, mainly be to determine in the life-span by bellows the mechanical endurance of vacuum interrupter.
Common bellows is positioned at the inside of arc control device, adopts the stainless-steel thin-wall pipe punch forming.Stamping forming bellows is in deciliter process of arc control device, and high acceleration can produce immense pressure to bellows, and after the long period of operation, the crest place is easily tired, causes the chronic leakage of arc control device, so that vacuum level of vacuum arc-quenching chamber decline, and cisco unity malfunction.
Increase the problem of the raising that reaches other costs that cause owing to reasons such as manufacturing process in order to solve the relevant cost of bringing owing to volume is excessive, need the vacuum circuit-breaker of the large electric current of miniaturization of a kind of working stability of research and development, life-span length.
Summary of the invention
The technical problem to be solved in the present invention is, provides that a kind of volume is little, lightweight, the life-span long, non-maintaining Miniaturized high-current vehicle-type vacuum breaker.
The present invention is achieved through the following technical solutions:
A kind of Miniaturized high-current vehicle-type vacuum breaker, comprise chassis body, three-phase vacuum circuit breaker pole, synchronizing shaft and auxiliary contact thereof, described three-phase vacuum circuit breaker pole is arranged on the top of metal framework main body, described synchronizing shaft and auxiliary contact thereof are arranged in the chassis body, all vertically be provided with successively from top to down vacuum interrupter in the described three-phase vacuum circuit breaker pole, insulating bar, permanent-magnet manipulating mechanism, described vacuum interrupter comprises terminals, lower terminals, the outside that bellows and ceramic chamber, described bellows are arranged on ceramic chamber is connected with the lower end of ceramic chamber; Described insulating bar one end is connected with moving contact, and this moving contact cooperates with bellows, and the other end is connected with permanent-magnet manipulating mechanism; The three-phase permanent operating mechanism of described three-phase vacuum circuit breaker pole is connected with synchronizing shaft respectively.
Further, described permanent-magnet manipulating mechanism comprises coil, moving iron core, tripping spring, upper magnet yoke, lower yoke and contact pressure spring, and described moving iron core is arranged on the middle part, is provided with tripping spring in it, and tripping spring is connected with upper magnet yoke; This mechanism outer ring arranges coil, and upper magnet yoke and lower yoke are fixedly installed on respectively chassis body; Described contact pressure spring one end is connected with insulating bar, and the other end is connected with moving iron core.
Further, the bellows of described arc control device alternately is welded inside and outside adopting some stainless steel ring plates.
Further, described yoke is made by annular non-retentive alloy material, can provide to surpass 230 kilograms snap close pressure.
Further, the three-phase permanent operating mechanism of described three-phase vacuum circuit breaker pole is realized dynamically being connected by tooth bar, gear with synchronizing shaft.
The present invention has the following advantages:
1) the present invention has farthest simplified the operating mechanism of circuit breaker: the ISM vacuum circuit-breaker has used the monocoil permanent-magnet manipulating mechanism of three-phase, and every phase vacuum circuit breaker pole uses a monocoil permanent-magnet manipulating mechanism; The three-phase permanent operating mechanism is installed in the metal framework, a synchronizing shaft links to each other with the three-phase permanent operating mechanism, synchronizing shaft herein just plays the effect of aided coordination, every phase permanent-magnet manipulating mechanism can drive respectively every phase vacuum arc extinguishing chamber of vacuum circuit breaker moving contact, and the reliability of supporting global switch equipment improves with it.
2) the every phase vacuum circuit breaker of the present invention pole is furnished with a phase permanent-magnet manipulating mechanism, and vacuum interrupter and operating mechanism be for arranging up and down, all part axial symmetric designs, mechanical movement all be about rectilinear motion, so can effectively reduce volume.
3) the every phase vacuum circuit breaker of the present invention pole only has several movable parts, removed the easily worn part in the conventional circuit breaker: such as energy storage motor, mechanical lock buckle, gear, chain, connecting rod, connecting lever etc., volume-diminished, weight saving, install more flexible, mounting means is very flexible, can formal dress, upside-down mounting, side dress, level install, and can be contained in easily in the switch cubicle of any model; And the wearing and tearing of mechanical part are little, and the probability that there was a mechanical failure reduces greatly, reach non-maintaining effect in for a long time, and practicality is high, good reliability.
4) bellows of vacuum interrupter of the present invention is external, therefore dwindled the volume of arc control device, the vacuum interrupter of 12KV is opened apart from only having 6mm, be the vacuum interrupter with volume minimum in the vacuum circuit-breaker of capacity, because overall dimensions reduce greatly, thereby can design than using the compacter switch cubicle of conventional circuit breaker.
5) bellows of the present invention is arranged on the bottommost of vacuum interrupter, plays the effect of sealing and motion, and its clearance between open contacts is little, the motion amplitude of insulating bar dwindles greatly, energy efficient, and reduce loss, mechanical endurance and electric life are long, so that this product has longer life cycle.
6) bellows of the present invention adopts the diaphragm welding, alternately be welded in inboard and the outside by one group of stainless steel ring plate, welding bellows is all very strict to material and welding process requirement, but the reliability of finished product is very high, mechanical stress is evenly distributed on the whole ring plate in deciliter operating process, the pressure that single-point is received reduces greatly, the application of this phase technology, not only make vacuum interrupter realize that external form is small and exquisite, and can reach the mechanical endurance of greatly having improved arc control device its specified mechanical endurance 150,000 times.
7) the present invention adopts permanent-magnet manipulating mechanism to control, deciliter number of operations of whole system no longer is restricted because connect interlocking device, the yoke that the core of permanent-magnet manipulating mechanism has annular non-retentive alloy material to make can provide to surpass 230 kilograms snap close pressure; During closing position, the magnetic force that relies on closed magnetic circuit to produce reliably remains on closing position with mechanism, and flexibility ratio is high, and is easy to use.
8) stable performance of the present invention can be saved a large amount of maintenance costs; Its high reliability has reduced the fault outage time to greatest extent, thereby has reduced operating cost; Material cost has not only been saved in the design of its compactness, simultaneously owing to having reduced space requirement thereby also having reduced relevant cost.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the present embodiment comprises chassis body 1, three-phase vacuum circuit breaker pole 3, synchronizing shaft 2 and auxiliary contact 23 thereof, described three-phase vacuum circuit breaker pole 3 is arranged on the top of chassis body 1, described synchronizing shaft 2 and auxiliary contact 23 thereof are arranged on the sidepiece of chassis body 1, described three-phase vacuum circuit breaker pole 3 is interior all vertically to be provided with vacuum interrupter successively under upper, insulating bar 10, permanent-magnet manipulating mechanism, described vacuum interrupter comprises terminals 16, lower terminals 19, the outside that bellows 14 and ceramic chamber 20, described bellows 14 are arranged on ceramic chamber 20 is connected with the lower end of ceramic chamber 20; Described insulating bar 10 1 ends are connected with moving contact 17, and this moving contact 17 cooperates with bellows 14, and the other end is connected with permanent-magnet manipulating mechanism; The three-phase permanent operating mechanism of described three-phase vacuum circuit breaker pole 3 is connected with synchronizing shaft 2 by spur gear, wheel moving gear respectively.
Described permanent-magnet manipulating mechanism comprises coil 5, moving iron core 7, tripping spring 8, upper magnet yoke 11, lower yoke 12 and contact pressure spring 9, and described moving iron core 7 is arranged on the middle part, which is provided with tripping spring 8, and tripping spring 8 is connected with upper magnet yoke 11; This mechanism outer ring arranges coil 5, and upper magnet yoke 11 and lower yoke 12 are fixedly installed on respectively chassis body interior 1; Described contact pressure spring 9 one ends are connected with insulating bar 10, and the other end is connected with moving iron core 7.
The bellows 14 of described arc control device alternately is welded inside and outside adopting some stainless steel ring plates 15.
Coil 5 of the present invention provides the energy for mechanism operation, produce magnetic field, act on moving iron core 7 and make its motion, thereby drive contact pressure spring 9 so that insulating bar 10 moves up and down, the moving contact 17 on insulating bar 10 tops contacts with the fixed contact of arc control device and separates, and realizes combined floodgate and the separating brake of circuit breaker.
Closing operation:
Circuit breaker makes arc control device moving contact 17 remain on open position by tripping spring 8, when needing to close a floodgate, injected because of pulse current to mechanism's coil 5 by the combined floodgate capacitor in the controller, electric current in the coil 5 is so that the electromagnetic attraction increasing between upper magnet yoke and the moving iron core 7, finally overcome tripping spring power, moving iron core 7 drives insulating bar 10 and moving contact 17 begins to move upward;
When moving iron core 7 Once you begin moves, air gap reduces thereupon, thereby electromagnetic force adds quick-action iron core 7 to move upward, this moment, closing speed can reach 1m/s, best closing speed and power producing characteristics, guaranteed circuit breaker not spring of vacuum interrupter when closing a floodgate, from and reduced the possibility that vacuum interrupter is restriked.
When moving iron core 7 setting in motions, along with the gap between moving iron core 7 and the upper magnet yoke reduces, electromagnetic force further strengthens, moving iron core 7 stop motions, but moving iron core 7 continues motion 2mm, compression contacts compression spring 9; This moment, coil 5 electric currents further increased, and made magnetic material reach the magnetic saturation state;
At this moment, when coil 5 electric current that closing position cutting-off controlling module is sent, this saturation flux makes iron core 7 remain on closing position, thereby realizes closing operation.Tripping spring 8 energy storage in making process, arc control device moving contact 17 remain on closing position by permanent magnetic.
In moving iron core 7 motions, make tripping spring 8 energy storage, for next sub-switching operation is got ready.
Sub-switching operation:
Inject the pulse current of a switching current opposite direction to mechanism's coil 5 by the separating brake capacitor in the control module, time is 15～20ms, this electric current is to the demagnetizing action of the magnetic material generating portion of mechanism, reduced closing retention force, just the opposite force of the tripping spring 8 of energy storage and contact pressure spring 9 so that moving iron core 7 discharge, to the accelerated motion of separating brake direction, finally remain on open position by tripping spring 8.Except being undertaken the electronic separating brake by control module, circuit breaker can also carry out manual brake separating.
The present invention can be used as high voltage connector, is used for the fields such as power plant, metallurgy, mine, petrochemical industry, building, is used for controlling the high-voltage motor of 12KV, 7.2KV grade, and the power consumption equipments such as transformer and capacitive load are specially adapted to various frequent operations field.Because volume is little, lightweight, flexible for installation, is easy to be installed in the loop of KYN28A-12, has good promotion prospect at the power plant power consumption equipment.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all execution modes exhaustive.Everyly belong to the row that apparent variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (4)
1. handcart type vacuum circuit breaker, it is characterized in that, comprise chassis body, three-phase vacuum circuit breaker pole, synchronizing shaft and auxiliary contact thereof, described three-phase vacuum circuit breaker pole is arranged on the top of chassis body, described synchronizing shaft and auxiliary contact thereof are arranged in the metal frame, described three-phase vacuum circuit breaker pole all vertically is provided with vacuum interrupter, insulated tension pole, permanent-magnet manipulating mechanism from top to down successively, described vacuum interrupter comprises terminals, lower terminals, bellows and ceramic chamber, described bellows is arranged on the outside of ceramic chamber, is connected with the lower end of ceramic chamber; Described insulated tension pole one end is connected with moving contact, and this moving contact cooperates with bellows, and the other end is connected with permanent-magnet manipulating mechanism; The three-phase permanent operating mechanism of described three-phase vacuum circuit breaker pole is connected with synchronizing shaft respectively.
2. a kind of handcart type vacuum circuit breaker according to claim 1, it is characterized in that, described permanent-magnet manipulating mechanism comprises coil, moving iron core, tripping spring, upper magnet yoke, lower yoke and contact pressure spring, described moving iron core is arranged on the middle part, be provided with tripping spring in it, tripping spring is connected with upper magnet yoke; This mechanism periphery arranges coil, and upper magnet yoke and lower yoke are fixedly installed on respectively in the chassis body; Described contact pressure spring one end is connected with insulating bar, and the other end is connected with moving iron core.
3. a kind of handcart type vacuum circuit breaker according to claim 1 is characterized in that, the bellows of described arc control device alternately is welded inside and outside adopting some stainless steel ring plates.
4. a kind of handcart type vacuum circuit breaker according to claim 1 is characterized in that, the three-phase permanent operating mechanism of described three-phase vacuum circuit breaker pole is connected by tooth bar, gear with synchronizing shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101246772A CN103050320A (en) | 2011-05-13 | 2011-05-13 | Miniaturized large-current handcart-type vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101246772A CN103050320A (en) | 2011-05-13 | 2011-05-13 | Miniaturized large-current handcart-type vacuum circuit breaker |
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| CN103050320A true CN103050320A (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101246772A Pending CN103050320A (en) | 2011-05-13 | 2011-05-13 | Miniaturized large-current handcart-type vacuum circuit breaker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745877A (en) * | 2013-12-31 | 2014-04-23 | 淮南万泰电子股份有限公司 | Novel contact system for alternative-current contactor |
| CN107171431A (en) * | 2017-06-29 | 2017-09-15 | 国网山东省电力公司淄博供电公司 | Tune electric equipment free of discontinuities, system and control method |
| CN107867184A (en) * | 2016-09-23 | 2018-04-03 | 株式会社日立产机系统 | Shutter unit and use its rail truck |
| CN108141016A (en) * | 2015-06-18 | 2018-06-08 | Abb瑞士股份有限公司 | Medium voltage breaker in environments such as subsea |
| RU2721790C1 (en) * | 2019-09-04 | 2020-05-22 | Евгений Юрьевич Парамонов | Mechanism for manual disconnection of drives of high-voltage vacuum circuit breaker |
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| JP2008204864A (en) * | 2007-02-21 | 2008-09-04 | Toshiba Corp | Switch |
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| CN2577428Y (en) * | 2002-10-30 | 2003-10-01 | 山东晨鸿电工有限责任公司 | Corrugated-pipe-exposed vacuum arc-chutes |
| CN2831409Y (en) * | 2005-05-26 | 2006-10-25 | 张军 | Permanent-magnet actuating gear of vacuum circuit breaker |
| JP2008204864A (en) * | 2007-02-21 | 2008-09-04 | Toshiba Corp | Switch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745877A (en) * | 2013-12-31 | 2014-04-23 | 淮南万泰电子股份有限公司 | Novel contact system for alternative-current contactor |
| CN103745877B (en) * | 2013-12-31 | 2015-12-23 | 淮南万泰电子股份有限公司 | AC contactor touch head system |
| CN108141016A (en) * | 2015-06-18 | 2018-06-08 | Abb瑞士股份有限公司 | Medium voltage breaker in environments such as subsea |
| CN108141016B (en) * | 2015-06-18 | 2020-01-10 | Abb瑞士股份有限公司 | Medium voltage circuit breaker in subsea environment |
| US10643814B2 (en) | 2015-06-18 | 2020-05-05 | Abb Schweiz Ag | Medium voltage circuit breaker in subsea environment |
| CN107867184A (en) * | 2016-09-23 | 2018-04-03 | 株式会社日立产机系统 | Shutter unit and use its rail truck |
| CN107171431A (en) * | 2017-06-29 | 2017-09-15 | 国网山东省电力公司淄博供电公司 | Tune electric equipment free of discontinuities, system and control method |
| CN107171431B (en) * | 2017-06-29 | 2024-01-26 | 国网山东省电力公司淄博供电公司 | Uninterrupted power regulating equipment, uninterrupted power regulating system and uninterrupted power regulating control method |
| RU2721790C1 (en) * | 2019-09-04 | 2020-05-22 | Евгений Юрьевич Парамонов | Mechanism for manual disconnection of drives of high-voltage vacuum circuit breaker |
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Application publication date: 20130417 |