CN206282746U - A kind of bar shaped composite vacuum load ratio bridging switch - Google Patents
A kind of bar shaped composite vacuum load ratio bridging switch Download PDFInfo
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- CN206282746U CN206282746U CN201621373375.3U CN201621373375U CN206282746U CN 206282746 U CN206282746 U CN 206282746U CN 201621373375 U CN201621373375 U CN 201621373375U CN 206282746 U CN206282746 U CN 206282746U
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- 239000002131 composite material Substances 0.000 title claims abstract description 14
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- 206010003830 Automatism Diseases 0.000 description 1
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Abstract
The utility model is related to a kind of bar shaped composite vacuum load ratio bridging switch,Including switching device and switching contact,Switching contact is per mutually including M contacts,I contact,II contact,K contacts,III contact and IV contact,Switching device is per mutually including the first two-way switch and the second two-way switch,I contact is connected with the output end of the regulating circuit of odd number gear,II contact is connected with the output end of the regulating circuit of even numbers gear,K contacts are in series with IV contact,I contact is serially connected with III contact by transition resistance R,Vacuum tube is parallel between III contact and IV contact,M contacts are connected with output circuit,The fixing end of the first two-way switch is connected with K contacts,The selection of the first two-way switch is terminated between I contact and II contact,The fixing end of the second two-way switch is connected with M contacts,The selection of the second two-way switch is terminated between III contact and IV contact.The utility model simple structure, economy is high.
Description
Technical field
The utility model is related to a kind of on-load tap changer, and especially a kind of bar shaped composite vacuum loaded tap-off is opened
Close.
Background technology
Distribution transformer traditional in early days, is single non-excitation pressure adjustment type, and non-excitation pressure adjustment must be by distribution transformer
Cut off from networking, i.e., not charged pressure regulation, the shunting switch for being used is referred to as off circuit tap changer, the wherein maximum nothing of consumption
Excited tapping switch is strip-like non-excitation tapping switch.Strip-like non-excitation tapping switch great advantage is sleeping mounted in transformer body
Top, occupy-place is few, and its technical and economic performance is higher.The shortcoming of non-excitation pressure adjustment is to exist that asking for powered pressure regulation can not be solved
Topic, can only be manually operated after power failure, and power off time is long, both influences power supply reliability, and without in good time adjustability；In order to overcome nothing
Excitation pressure regulation has limitation.Occur as soon as load ratio bridging switch.
The on-load tap changer that domestic early stage distribution transformer is matched somebody with somebody is born in oil by copper tungsten arc contact
What idling was changed.Due to tap change operation frequently, arc contact scaling loss is corresponding than more serious, the carbonization of oil and pollution speed compared with
Hurry up.Thereby increase regular maintenance and periodic inspection workload.In order to reduce load ratio bridging switch maintenance load, intelligence is met
The need for power distribution network develops, the loaded tap-off that domestic and international shunting switch manufacturing enterprise one after the other releases big-and-middle capacity vacuum blow-out is opened
Close.At present, not only put it over and apply in the big-and-middle capacity power transformer of oil immersed type using vacuum on-load operation switch, and
And also widely applied in small-capacity dry-type distribution transformer.But on the oil immersion-type distribution transformer of low capacity, by
In the difficult point for failing breakthrough manufacturing technology, most of load ratio bridging switches switch as voltage in using copper tungsten arc contact oil
Regulation.In order to reduce the pollution of oil, some distribution transformer load ratio bridging switches just use on-line oil filter.Using online filter
Oily device, though solving oily pollution problem, increases the maintenance load of equipment investment and on-line oil filter, still cannot be real
Existing freedom from repairs.Due to vacuum tube blow-out reliability, contact long lifespan, without oily pollution with it is non-maintaining.Thus a small number of load ratio bridging switches
Regulation of the vacuum tube switching as voltage is explored, but vacuum on-load operation switch is still deposited in structural behaviour in the market
There is unsatisfactory part.The vacuum pressure regulation of cartridge type mounting means, using the mechanical transmission mechanism for being spring energy-storage quick release,
Structure is generally combined type selecting switch structure, though range of regulation can meet ± 4 × 2.5% (i.e. linear 9 tap positions) requirement,
But weak point is multiplex switch grease chamber, manufacturing cost is higher, and it is vertical mounted in transformer side in addition, and occupy-place is larger.It is sleeping
The vacuum pressure regulation of formula mounting means, although it is few that it installs occupy-place in inside transformer, it would however also be possible to employ permanent magnet mechanism switches, but receives
Permanent magnet mechanism can only reciprocating operation mode limitation, pressure regulation tap position number very little, only 3 tap positions (as ± 5%),
The range of regulation requirement of GB/T6451 standards cannot be met.Therefore, existing vacuum voltage-regulation tap changer is more difficult meets distribution transformer
The need for device intelligent development.
The content of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of simple structure, low cost and tune
The big bar shaped composite vacuum load ratio bridging switch of pressure scope.
In order to realize above-mentioned utility model purpose, the utility model employs following technical scheme：
A kind of bar shaped composite vacuum load ratio bridging switch, including switching device and switching contact, the switching contact are every
Mutually include M contacts, I contact, II contact, K contacts, III contact and IV contact, the switching device is per mutually including first pair
To switch and the second two-way switch, I contact is connected with the output end of the regulating circuit of odd number gear, II contact and
The output end of the regulating circuit of even numbers gear is connected, and the K contacts are in series with IV contact, and I contact and III contact are logical
Cross transition resistance R to be serially connected, vacuum tube, the M contacts and output circuit phase are parallel between III contact and IV contact
Connection, the fixing end of first two-way switch is connected with K contacts, the selection of first two-way switch terminate into I contact with
Between II contact, the fixing end of second two-way switch is connected with M contacts, and the selection of second two-way switch is terminated into III
Between contact and IV contact.
Preferably：Often the M contacts of phase, I contact and II contact are installed on the 5th insulating bar, institute
K contacts, III contact and IV contact for stating every phase are installed on the 6th insulating bar.
Preferably：The switching device includes a round linear motion and bridges dynamic touching equipped with two per phase
3rd insulation board and the switching switch change-over actuating mechanism with the 3rd insulation board straight reciprocating motion of head, the K contacts, I touch
Head, II contact and one bridging moving contact constitute the first two-way switch, the M contacts, III contact, IV contact and another
Bridging moving contact constitutes the second two-way switch.
Preferably：The switching switch change-over actuating mechanism uses permanent magnet mechanism or spring energy-storage quick release
Rifle bolt mechanism.
Preferably：One end of the vacuum tube is also associated with action bars, and the other end of action bars is provided with roller,
Back-moving spring is additionally provided with the action bars, the roller is completed the division of vacuum tube by the TRAJECTORY CONTROL of rectilinear movement cam
Conversion is acted.
The utility model uses a transition resistance and a vacuum tube per phase, and using two-way switch between multiple contacts
Switching, the switching cooperation closed by vacuum tube between control and multiple contacts completes accurate switching contact conversion program, realizes
Gear is adjusted, simple structure, low cost.In addition, the selection of gear is using similar strip-like non-excitation tapping switch shunting tap cloth
Mode is put, is divided into single even numbers tap two-layer arranged, be easy to increase pressure regulation series and range of regulation, except meeting GB/T6451
Linear 9 tap positions (± 4 × 2.5%) of standard requirement are outward, maximum up to 13 tap positions (± 6 × 2.5%), are suitable to larger
Range of regulation requirement.Other the utility model cancels grease chamber, and global switch is using the sleeping dress of similar strip-like non-excitation tapping switch
At the top of transformer body, occupy-place is few, and its economy is high.
The utility model breaks through system for the unsatisfactory part in existing oil immersion-type distribution transformer load ratio bridging switch
Make the difficult point of technology, a kind of simple structure of innovation formula utility model, non-maintaining, horizontal installation occupy-place is small, pressure regulation series is more, performance
The reliability box-like on-load tap changer of intelligent vacuum switch groups higher, the oil immersed type for having filled up intelligent distribution network is true
" blank " of the on-load tap changer that cut-in without ball is changed.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is the A-A cross section views of Fig. 1.
Fig. 3 is the B-B cross section views of Fig. 1.
Fig. 4 is the C-C cross section views of Fig. 1.
Fig. 5 is the E-E cross section views of Fig. 1.
Fig. 6 is circuit theory diagrams of the utility model in odd number pressure regulation gear.
Fig. 7 is circuit theory diagrams of the utility model in even numbers pressure regulation gear.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
Description the utility model and simplifying is described, rather than indicate imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, unless otherwise indicated, the implication of " multiple "
It is two or more, unless otherwise clearly restriction.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or be electrically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
It is two connections of element internal.For the ordinary skill in the art, above-mentioned art can as the case may be understood
Concrete meaning of the language in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
D score can include the first and second feature directly contacts, it is also possible to including the first and second features not be directly contact but logical
The other characterisation contact crossed between them.And, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First is special
Levy second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Represent that fisrt feature level height is less than second feature.
A kind of horizontal bar shaped composite vacuum load ratio bridging switch as shown in Fig. 1-Fig. 7, including from top to bottom pacify successively
Head drive device 1, vacuum switching device 3, converting switch device and tap selection device in housing；The head drives
Dynamic device 1 includes motor drive mechanism and rotating shaft 11, and motor drive mechanism uses the motor with deceleration device；The vacuum switching device 3
Including vacuum tube 31, rectilinear movement cam 33 and transition resistance 34；The converting switch device includes switching switch change-over action
Mechanism 4 and switching control contact mechanism 5, the tap selection device include that tap selector transmission mechanism 2, odd number taps selection
Device contact mechanism 7 and even numbers tap selector contact mechanism 8, the motor drive mechanism drive switching switch change-over to move by rotating shaft 11
Make mechanism 4 and tap selector transmission device 2；It is described to drive switching switch change-over actuating mechanism to drive rectilinear movement cam 33,
The opening and closing of vacuum tube 31 is controlled, and drives the straight reciprocating motion of switching control contact mechanism 5；The tap selector transmission dress
2 driven odd number tap selector contact mechanisms 7 are put to be moved along a straight line with even numbers tap selector contact mechanism 8.
The tap selector transmission mechanism 2 includes mechanical coupler and tap selector twin roller with 180o spatial domains
Bar shaped Geneva mechanism 6, the mechanical coupler drives slot poking ware twin roller, and alternating stirs upper and lower bar shaped sheave so that tap choosing
Select device odd number and even numbers contact according to grading operation principle the alternate selection shunting tap under no-load.
The even numbers tap selector contact mechanism includes the first insulating bar, one for being provided with three-phase even numbers tap
Root is provided with second insulating bar and a round linear motion of extraction contact and bridges the first of moving contact per being mutually equipped with two
Insulation board, first insulation board is driven by tap selector twin roller bar shaped Geneva mechanism 6.
The odd number tap selector contact mechanism includes the 3rd insulating bar, one for being provided with three-phase odd number tap
Root is provided with the 4th insulating bar and a round linear motion of extraction contact and bridges the second of moving contact per being mutually equipped with two
Insulation board, second insulation board is driven by tap selector twin roller bar shaped Geneva mechanism 6.
The switching switch change-over actuating mechanism 4 is using permanent magnet mechanism or the rifle bolt machine of spring energy-storage quick release
Structure.The vacuum switching device 3 also includes the action bars being connected with vacuum tube 31 with one end, and the other end of action bars is provided with
Roller 32, is additionally provided with back-moving spring on the action bars, the roller 32 is completed by the TRAJECTORY CONTROL of rectilinear movement cam 33
The division conversion action of vacuum tube.
The head drive mechanism 1 also includes head flanges, head cover lid, tap position indicator -transmitter and tap changing
Course location transmitter.Head drive mechanism is installed on the side of distribution transformer case lid by head flanges.Head driving machine
Structure power transmission shaft passes through transformer box cover, reaches tap selector transmission mechanism, carries out shunting tap pre-selection.If shunting switch is carried
During quick mechanism, while also driving the spring energy-storage of quick mechanism.The head cover lid protected and do not received inside head drive mechanism
Dislike the pollution of strict atmospheric environment.Tap changing course location transmitter is mainly magneto switching switch and sends action command and set
Put sender unit.After shunting switch often completes one-level pressure regulation, tap position indicator -transmitter sends to position indicator
Tap position signal.
Motor drive mechanism with speed reduction gearing is available to separate type or integral type, mainly by speed change, allows transmission to lead
Axle often converts one-level and turns to rotation half-turn (180o).After shunting switch often completes one-level pressure regulation, indicate to send out to the tap position
Device is sent to send a tap position signal.The tap changing course location transmitter is mainly magneto switching switch and sends dynamic
Instruct and setting signal dispensing device.
The switching contact is described to open per M contacts, I contact, II contact, K contacts, III contact and IV contact is mutually included
Device is closed per the first two-way switch and the second two-way switch is mutually included, I contact is defeated with the regulating circuit of odd number gear
Go out end to be connected, II contact is connected with the output end of the regulating circuit of even numbers gear, the K contacts are mutually gone here and there with IV contact
Connection, I contact is serially connected with III contact by transition resistance R, and vacuum tube is parallel between III contact and IV contact,
The M contacts are connected with output circuit, and the fixing end of first two-way switch is connected with K contacts, first two-way opened
The selection of pass is terminated between I contact and II contact, and the fixing end of second two-way switch is connected with M contacts, and described second
The selection of two-way switch is terminated between III contact and IV contact.
The switching device includes that one comes and goes linear motion and per mutually equipped with two the 3rd insulation boards of bridging moving contact
With the switching switch change-over actuating mechanism 4 of the insulation board straight reciprocating motion of band the 3rd, the K contacts, I contact, II contact and
One bridging moving contact constitutes the first two-way switch, the M contacts, III contact, IV contact and another bridging moving contact structure
Into the second two-way switch.When shunting tap continuously advances (such as 3 → 4 selection) in one direction, coupler just promotes slot poking ware
Rotated toward same direction, drive bar shaped sheave to continue to move along, then tap selector moving contact just selects adjacent No. 4 points in advance
Tap is connect, then switching switch is acted toward even numbers side direction transformation.If shunting tap needs reversely (such as 4 → 3) selection, coupling
Device idle running 180o, tap selector contact is motionless, as long as switching switch is acted to odd number side direction transformation.
When switching switch magneto conversion actuating mechanism 4 receives the signal that tap changing course location transmitter sends
The 3rd insulation board is driven to move along a straight line, two moving contacts of the 3rd insulation board are by M contacts, III contact and I contact, K stylus changers
It is M contacts, IV contact and K contacts, II contact, vacuum tube is completed division by the control of rectilinear movement cam locus in the process
Conversion is acted, and the switching control contact system with straight line back and forth movement coordinates, and realizes single resistor transition list vacuum conditions of gear.
The sleeping dress of vacuum tube is maintained static, and the roller on its action bars is completed division and become by the control of rectilinear movement cam locus
Move work.The utility model only sets the switching of single vacuum pipe per phase.It is double true using main (arc) and transition that it may extend to every phase
Cut-in without ball is changed.The utility model is characterized in that the switching control contact system of straight line back and forth movement is for matching somebody with somebody with vacuum switching system
Close, complete accurate switching contact conversion program.
The utility model is characterized in that the selection of tap selector contact uses straight reciprocating motion, and tap selector is become by setting
The rotating shaft of drive mechanism half of depressor case lid drives slot poking ware twin roller through mechanical coupler, and alternating is stirred upper and lower bar shaped sheave, made
Tap selector odd number and even numbers contact according to grading operation principle the alternate selection shunting tap under no-load.
Bar shaped composite vacuum load ratio bridging switch overall arrangement of the present utility model：Tap selector is cut under
Switch is changed upper.Tap selector is divided into two-layer arrangement, and under, even numbers tap selector is upper for odd number tap selector.Switching
Switch is also adopted by two-layer arrangement, and switching control contact arrangement is arranged in upper strata in lower floor, vacuum switching system.Vacuum tube switching
Cam is driven by switching control moving contact insulation board.Selection contact is linked with switching switch by electrical lead wire.All straight line fortune
Dynamic insulation board is with lm guides control.
Bar shaped composite vacuum load ratio bridging switch of the present utility model is the sky at sleeping dress transformer coil top and case lid
It is interior, occupy-place is installed few.Due to distribution transformer capacity less, load ratio bridging switch rated through-current is corresponding smaller, for a long time
Current-carrying is directly undertaken by vacuum tube, and main contact current-carrying is bypassed without setting.Thus, the utility model bar shaped vacuum loaded tap-off is opened
Close have simple structure, install that occupy-place is small, pressure regulation series is more, the contact life-span high, freedom from repairs and the characteristics of reliability high.
The utility model vacuum on-load operation switch uses fabricated structure, by tap selector and switching switch two parts
Composition, bringing onto load is not preselected tap selector contact on distribution transformer shunting tap, and then switching switch change-over is moved
Make, will load on the tap for going to oneself pre-selection, realize on-load voltage regulation.It is different from combined type selecting switch structure, and work can
It is higher by property；
The selection of the utility model tap selector contact uses straight reciprocating motion, and tap selector is by setting transformer tank
The rotating shaft of drive mechanism half of lid drives slot poking ware twin roller through mechanical coupler, and alternating stirs upper and lower bar shaped sheave so that tap
Selector list even numbers contact alternate selection shunting tap under no-load according to grading operation principle；
The utility model switching switch is single resistor transition, single vacuum (per a vacuum tube is mutually set) switching mode.When
After the completion of tap selector pre-selection shunting tap, switching switch contact system is transformed on pre-selection tap position, completes one-level electricity
Pressure regulation；
The only single even numbers reciprocating linear action of the utility model combined type switching switch, is easy to set permanent magnet mechanism operation very
Blank pipe switching mode, but be also not excluded for setting the rifle bolt mechanism of spring energy-storage quick release and complete map function.Change moves
Make mechanism and select one for two.Vacuum tube by rectilinear movement cam locus control controls contact with the changeover program for setting linear motion
After correct cooperation, Accurate translation operation can be completed；
It is 10kV, rated through-current maximum that the utility model bar shaped vacuum on-load operation switch is applied to rated voltage
200A, wiring are the voltage-regulation of D/Y modes distribution transformer, automatic voltage regulator and special transformer, can cover 5000kVA appearances
Amount and following transformer-supplied；
The utility model vacuum on-load operation switch can carry automatic voltage-regulating controller.Automatism voltage control device has with vacuum
On-load shunting switch drive mechanism is used cooperatively, and constitutes automatic voltage regulating system.It is sampled, detect, compare, after time delay, instructing vacuum
Load ratio bridging switch pressure regulation is operated.
It should be pointed out that above example is only representative example of the present utility model.The utility model can also have many
Deformation.Every any simple modification, equivalent variations and modification made to above example according to essence of the present utility model,
It is considered as belonging to protection domain of the present utility model.
Claims (5)
1. a kind of bar shaped composite vacuum load ratio bridging switch, it is characterised in that：It is described to cut including switching device and switching contact
Contact is changed per mutually including M contacts, I contact, II contact, K contacts, III contact and IV contact；The switching device is wrapped per phase
Include the first two-way switch and the second two-way switch；I contact is connected with the output end of the regulating circuit of odd number gear, described
II contact is connected with the output end of the regulating circuit of even numbers gear；The K contacts are in series with IV contact；I contact with
III contact is serially connected by transition resistance R；Vacuum tube is parallel between III contact and IV contact；The M contacts with it is defeated
Go out circuit to be connected；The fixing end of first two-way switch is connected with K contacts；The selection of first two-way switch terminate into
Between I contact and II contact；The fixing end of second two-way switch is connected with M contacts；The selection of second two-way switch
Terminate between III contact and IV contact.
2. a kind of bar shaped composite vacuum load ratio bridging switch according to claim 1, it is characterised in that：Every phase
M contacts, I contact and II contact are installed on the 5th insulating bar；Often the K contacts of phase, III contact and IV contact are equal
On the 6th insulating bar.
3. a kind of bar shaped composite vacuum load ratio bridging switch according to claim 1, it is characterised in that：The switch dress
Put and come and go linear motion and per mutually equipped with two the 3rd insulation board straight lines of the 3rd insulation board and band of bridging moving contact including one
Reciprocating switching switch change-over actuating mechanism（4）；The K contacts, I contact, II contact and a bridging moving contact structure
Into the first two-way switch；The M contacts, III contact, IV contact and another bridging moving contact constitute the second two-way switch.
4. a kind of bar shaped composite vacuum load ratio bridging switch according to claim 1, it is characterised in that：The switching is opened
Close conversion actuating mechanism（4）Using permanent magnet mechanism or the rifle bolt mechanism of spring energy-storage quick release.
5. a kind of bar shaped composite vacuum load ratio bridging switch according to claim 1, it is characterised in that：The vacuum tube
One end be also associated with action bars, and the other end of action bars is provided with roller（32）；Back-moving spring is additionally provided with the action bars；
The roller（32）By rectilinear movement cam（33）TRAJECTORY CONTROL come complete vacuum tube division conversion act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373375.3U CN206282746U (en) | 2016-12-14 | 2016-12-14 | A kind of bar shaped composite vacuum load ratio bridging switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373375.3U CN206282746U (en) | 2016-12-14 | 2016-12-14 | A kind of bar shaped composite vacuum load ratio bridging switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206282746U true CN206282746U (en) | 2017-06-27 |
Family
ID=59074165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621373375.3U Expired - Fee Related CN206282746U (en) | 2016-12-14 | 2016-12-14 | A kind of bar shaped composite vacuum load ratio bridging switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206282746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282121A (en) * | 2018-01-22 | 2018-07-13 | 国网北京市电力公司 | Switching method and switching circuit, the electrical equipment of switching circuit |
| CN112840428A (en) * | 2018-09-12 | 2021-05-25 | 西门子能源全球有限公司 | Power switch |
-
2016
- 2016-12-14 CN CN201621373375.3U patent/CN206282746U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282121A (en) * | 2018-01-22 | 2018-07-13 | 国网北京市电力公司 | Switching method and switching circuit, the electrical equipment of switching circuit |
| CN112840428A (en) * | 2018-09-12 | 2021-05-25 | 西门子能源全球有限公司 | Power switch |
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Granted publication date: 20170627 |