CN109243880A - Dry type, which has, carries vacuum voltage-regulation tap changer - Google Patents
Dry type, which has, carries vacuum voltage-regulation tap changer Download PDFInfo
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- CN109243880A CN109243880A CN201811278603.2A CN201811278603A CN109243880A CN 109243880 A CN109243880 A CN 109243880A CN 201811278603 A CN201811278603 A CN 201811278603A CN 109243880 A CN109243880 A CN 109243880A
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- slide box
- static contact
- vacuum
- dry type
- tap changer
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- 230000007246 mechanism Effects 0.000 claims abstract description 83
- 238000004146 energy storage Methods 0.000 claims abstract description 32
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- 230000003068 static effect Effects 0.000 claims description 79
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 210000000078 claw Anatomy 0.000 claims description 8
- 210000003813 thumb Anatomy 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
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- 238000005457 optimization Methods 0.000 description 6
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
Abstract
Have the present invention provides dry type and carries vacuum voltage-regulation tap changer.It includes vacuum switching mechanism that dry type of the invention, which has load vacuum voltage-regulation tap changer,；It is characterized by: the power intake of the insulation shaft of the vacuum switching mechanism is equipped with change gear, change gear is driven with set on driving rack cooperation below by driving rack, and driving rack is set on spring energy-storage relieving mechanism or permanent magnet mechanism.Structure of the invention design is simple, and compact, occupy-place is small, greatly reduces manufacture assembly precision, and economy is higher；And the present invention realizes the reciprocity between two kinds of modes of operation of spring energy-storage quick release mechanism and permanent-magnet operating mechanism.
Description
Technical field
The present invention relates to load ratio bridging switch (being abbreviated as OLTC), and in particular to a kind of dry type OLTC.
Background technique
It is well known that the distribution transformer of one fixed supply voltage of access, by changing its transformer winding turn ratio,
The voltage of transformer secondary can be raised and lowered in the case where transformer primary side supply voltage is constant, to reach pressure regulation mesh
's.
Changing distribution transformer voltage ratio has non-excitation pressure adjustment or on-load voltage regulation two ways.Non-excitation pressure adjustment must stop
Electricity, power off time is longer, and without in due course adjustability；On-load voltage regulation speed is fast, there is in due course adjustability, can on the spot or a distant place is electronic
Automatic management is convenient in operation.Therefore, the pressure regulation of distribution transformer preferably uses on-load voltage regulation mode.
Recently as the development of distribution cause, dry type on-load regulator transformer is also widely used more and more.It is dry
Formula on-load regulator transformer needs the matched use of dry vacuum OLTC.
Dry vacuum OLTC mostly uses fabricated structure, is made of vacuum diverter switch and tap selector.Early stage is dry
Formula vacuum diverter switch mostly uses greatly oscillating rod type to cross execution of the dead point spring energy-storage quick release mechanism as vacuum switching mechanism
Mechanism, structure is excessively complicated, and the accuracy of manufacture requires high, slightly to manufacture or assemble carelessness, though resulting in swing rod has crossed dead point,
The problem of appearance of spring energy-storage quick mechanism does not discharge, causes burning for dry type on-load tap changer.
Relative to dead point spring energy-storage quick release mechanism is crossed, rifle bolt spring energy-storage quick release mechanism is in reliable performance
Though having improvement in property.But dry type rifle bolt spring energy-storage quick mechanism borrows the circularly-eccentric sheave of M type oil immersed type switching switch mostly
The relieving mechanism of upper lower slide box formula, upper and lower two sliding boxes are discharged each along 2 guide rails (the amounting to 4 guide rails) sliding of itself
The outside of sliding box is arranged in cam and pawl card, causes device volume big；Entire quick release mechanism input shaft and output shaft simultaneously
Using concentric locking collar axle construction, cause mechanism excessively complicated, restricts the raising of dry vacuum OLTC economy.
With the appearance of vacuum and permanent magnet operation new technology, occurs permanent magnet vacuum on-load tap changer in the market.It adopts
It is each advantageous with the product of permanent magnet mechanism and rifle bolt spring energy agency, applied to different occasions.Currently, existing product
It cannot achieve reciprocity between permanent magnet mechanism and rifle bolt spring energy agency, i.e., the permanent magnet mechanism of product can not be transformed into gunlock
The rifle bolt spring energy agency of product can not be also transformed into permanent magnet mechanism by formula spring energy agency.Therefore, if user gathers around
Have and still need the tap switch of rifle bolt spring energy agency using the tap switch of permanent magnet mechanism, can only just buy
The new tap switch using rifle bolt spring energy agency, and the existing tap switch using permanent magnet mechanism is idle, makes
At the wasting of resources；, whereas if client needs using the tap switch of rifle bolt spring energy agency but only using permanent magnetic motor
The tap switch of structure,.Therefore, it is necessary to develop the skill that can be realized permanent magnet mechanism and rifle bolt spring energy agency reciprocity
Art.
In addition, dry vacuum on-load tap changer generallys use the regulator of the double vacuum of single resistance at present.First is that
The cost of single vacuum tube is just very high, and 3-phase dry type vacuum on-load tap changer more needs to match total 6 very
Blank pipe, cost is high, restricts the application of dry type on-load tap changer.
Summary of the invention
The purpose of the present invention is to provide a kind of dry vacuum OLTC.The present invention realizes spring energy-storage quick release mechanism
With the reciprocity between two kinds of modes of operation of permanent-magnet operating mechanism；And structure of the invention design is simple, and it is compact, it is small in size, subtract significantly
Manufacture assembly precision is lacked, using the voltage-regulating technique of single resistance list vacuum, economy is higher.
Technical solution of the present invention: dry type, which has, carries vacuum voltage-regulation tap changer, including vacuum switching mechanism；The vacuum is cut
Change planes structure insulation shaft power intake be equipped with change gear, change gear be set to below driving rack cooperation by
Driving rack driving, driving rack are set on spring energy-storage relieving mechanism or permanent magnet mechanism.
Compared with prior art, the shaft of the vacuum diverter switch in the present invention is driven using rack and pinion drive mechanism,
Rack gear can be driven by spring energy-storage quick release mechanism or permanent-magnet operating mechanism, to realize spring energy-storage quick release machine
Reciprocity between two kinds of modes of operation of structure and permanent-magnet operating mechanism makes product operation mode of the invention with more flexibility, can
According to the demand of user, to select or replace specific mode of operation.
As optimization, the driving rack is set on spring energy-storage quick release mechanism.Further, the spring energy-storage is fast
Quick-release laying mechanism includes bottom plate, across the transmission shaft of bottom plate setting, and the machine core being arranged on bottom plate；The machine core packet
Include the upper slide box and lower slide box being slidably matched；Two guide rails for being cased with energy-stored spring are equipped between the upper slide box and lower slide box,
And is matched with two guide rails by sliding pair and merge two spring cards for being located at energy-stored spring two sides；The upper slide box and
Lower slide box two sides are equipped with claw, and described two spring cards are limited by being located at the claw of same side；The bottom of the lower slide box
Portion is equipped with release block, corresponding, and the bottom plate is equipped with a pair of of limiter, and the upper slide box is equipped with a pair of of card slot；Under described
The bottom of sliding box is additionally provided with linear type track groove, and the top of the transmission shaft is equipped with eccentric rod, and the end of eccentric rod is equipped with thumb wheel,
Thumb wheel is matched with linear type track groove；The driving rack is set to the top of upper slide box.The fast quick-release of spring energy-storage of the invention
Laying mechanism has completely new drive mechanism, and execution acts faster, keeps mechanism delivery efficiency higher；Spring energy-storage of the invention is quick
Relieving mechanism only has two guide rails side by side, and design is simple, and compact, occupy-place is small, greatly reduces to manufacture assembly precision
It is required that；The present invention makes full use of the space between lower slide box and bottom plate, by spring energy-storage block (track groove) and quick release block
(release block) is arranged in the bottom of lower slide box and limiter is arranged below machine core, is limited by cooperating with card slot, thus
The volume for reducing entire mechanism keeps structure more compact, overcome discharged in traditional spring energy-storage quick release mechanism it is convex
Wheel is placed in the outside of sliding box with claw, leads to the problem that device volume is big.
As optimization, the lateral wall of the lower slide box is equipped with external chute, external chute and on upper slide box lateral wall
Outer idler wheel cooperation；The inner sidewall of the upper slide box is equipped with internal chute, and internal chute is matched with the internal trolley being set on lower slide box inner sidewall
It closes.It can guarantee to rub between upper lower slide box by idler wheel transmission small, the movement velocity in increase when the opposite sliding of lower slide box,
Upper slide box connects stronger with lower slide box simultaneously, and reliability is higher.
As optimization, the limiter includes spacing pole socket set on the bottom plate, one end hinge of spacing pole socket and gag lever post
It connects, the other end of gag lever post is equipped with position-limited wheel, and the lower section of position-limited wheel is equipped with reset spring.The limiter structure is simple, volume
It is small, and good limit effect, while using the effect of limit reset spring, Rapid reset may be implemented in upper slide box, and it is dynamic to shorten release
Time interval between work improves the delivery efficiency of mechanism.Further, the side where the bottom plate upper limit device is equipped with one piece
L-type is located at two position-limited wheels corresponding close to switch installation board close to switch installation board equipped with 2 close switches
Close in the distance of reaction of switch.The spring energy-storage quick release mechanism of conventional dry OLTC can be effectively solved close to switch
In, once mechanism malfunction, causes gunlock not discharge, i.e., tap selector in place, but shift-position changing mechanism be failure to actuate or accidentally
The problem of movement, avoids tap switch and burns and transformer damage, effectively improves the reliability and safety of mechanism.
As optimization, the both ends of two guide rails are respectively inserted on the jack on two blocks of side plates of left and right arrangement, are inserted
The outside in hole is equipped with guide rail sealing plate；Wherein guide rail and the lower slide box be by sliding pair cooperation, another guide rail with it is described
Upper slide box is cooperated by sliding pair；With the buffering being arranged on the guide rail of upper slide box cooperation between the upper slide box and side plate
Spring.Guide rail sealing plate can help guide rail preferably to fix, and prevent the movement of guide rail, keep spring energy-storage quick release mechanism more preferable
Ground operating, while being convenient for the installation and removal of guide rail；Design for buffer spring, on the one hand, due to mechanism work of the invention
As when execute fast speed, when movement, has biggish kinetic energy and inertia, and buffer spring can effectively buffer upper slide box completion and release
Power extra after acting is put, the elastic force that simultaneous buffering spring deformation generates may be that movement next time provides certain move
Power increases transmission speed and transmission efficiency, on the other hand can prevent upper slide box from directly hitting with biggish kinetic energy and inertia
The side plate at both ends improves the reliability of mechanism to make mechanism be damaged.
As optimization, the vacuum switching mechanism includes insulation board, and across the shaft of insulation board setting；The insulation
The two sides of plate are respectively equipped with K conversion contact group and M output sets of contacts；The K conversion contact group side of the insulation board is additionally provided with very
Empty switching tube and cam changeover mechanism for driving vacuum switch tube division to act, and the cam in shaft；It is described
Cam has A flange and B flange；The K conversion contact group include I static contact of K-, II static contact of K-, III static contact of K- and with turn
The K moving contact of axis rotation；One end of the K moving contact connects with I static contact of K- always, and the other end is completed when A flange works
II static contact of K- is to the switching of III static contact of K-, and there are off-states in handoff procedure；The M output sets of contacts includes M- I
Static contact, II static contact of M-, III static contact of M- and the M moving contact rotated with shaft；One end of the M moving contact always with M- I
Static contact connects, and the other end completes II static contact of M- to III static contact of M- within the interval time of the work of A flange and the work of B flange
Switching, and handoff procedure is not turned off state.The present invention successfully overcomes the deficiencies in the prior art, is opened using single vacuum
The innovative design of pipe is closed, for specific construction so that switching action has specific program, each handoff procedure vacuum switch tube is logical
Break twice, reaches the function of double vacuum switch tubes in compound type vacuum OLTC, both reduced the dosage of vacuum switch tube, and improved
Economy, and make total simple and compact, volume is smaller；In addition, in the present invention, M output sets of contacts may insure to bear
It carries electric current and stablizes output, and the back-up protection that K conversion contact group can be used as vacuum switch tube acts on, under usual condition, vacuum is opened
Pass pipe gap is small, and vacuum degree is good, and insulation is enough between grade, but when vacuum switch tube leaks, at any time may
Electric arc occurs not put out, overvoltage vacuum breakdown or restrike phenomenon after extinguishing, leads to occur short circuit accident between grade, so vacuum switch
Pipe must be provided with standby safeguard protection；The effect of K conversion contact group in the present invention is to be when vacuum switch tube failure, can
To undertake blow-out by K conversion contact group, makes vacuum OLTC that short circuit accident between grade will not occur, greatly improve mechanism and safely may be used
By property；Thus the present invention also has the contact service life long, freedom from repairs, highly-safe feature.
It advanced optimizes, A flange is identical with the shape of B flange, and working surface is the axis of rotation of the center of curvature and cam
The cambered surface of coincidence, the arc length of working surface are equivalent to 1/10th of full circle；To both guarantee K conversion contact group and M output touching
Head group smoothly completes specific switching action, and can guarantee entire switching action quickly, efficiently；The middle wire clamp of A flange and B flange
Angle is 100 °；If the angle too small, vacuum switch tube is too short to the interval time being closed again again from disconnection is closed into, and influences
The service life of vacuum switch tube, and if angle is excessive, and will lead to switching action low efficiency；Studies have shown that above-mentioned
Specific angle interval, that is, can guarantee the service life of vacuum switch tube, and can guarantee that switching action efficiently, rapidly carries out.
It further include control system as optimization；The control system includes single-chip microcontroller, single-chip microcontroller respectively with OLED display
It is connected with GPRS communication module；The OLED display has wifi communication function.Present invention employs novel OLED to show
Screen, the visibility with big wide-angle, even if watching under very big visual angle, picture is still undistorted；And low-temperature characteristics is good,
It remains to normally show when 40 degrees below zero, luminous efficiency is higher, and energy consumption is lower；OLED display screen can show real-time time simultaneously,
The information of real-time gear and historical data etc., display is richer, more diversification；In addition, OLED display screen is communicated with wifi
Function, thus, user can realize display and control by PC machine, mobile phone and parallel controller, very convenient；And single-chip microcontroller with
The connection of GPRS communication module, then realize remote operation.
Detailed description of the invention
Fig. 1 is that dry type of the invention has the structural schematic diagram for carrying vacuum voltage-regulation tap changer (dry vacuum OTLC)；
Fig. 2 is the right view using the dry vacuum OLTC of spring energy-storage quick release mechanism；
Fig. 3 is the right view using the dry vacuum OLTC of permanent magnet mechanism release device；
Fig. 4 is the structural schematic diagram of the spring energy-storage quick release mechanism of dry vacuum OLTC of the invention；
Fig. 5 is the assembly relation schematic diagram of the spring energy-storage quick release mechanism of Fig. 4；
Fig. 6 is the structural schematic diagram of the vacuum switching mechanism (three-phase) of dry vacuum OLTC of the invention；
Fig. 7 is the left view view of Fig. 6；
Fig. 8 is the right view of Fig. 6；
Fig. 9 is the circuit diagram that dry vacuum OLTC of the invention works in singular pressure regulation gear；
Figure 10 is the circuit diagram that dry vacuum OLTC of the invention works in even numbers pressure regulation gear；
Figure 11-18 is the vacuum switching mechanism of dry vacuum OLTC of the invention from singular pressure regulation gear (odd number tap) work
Transform to the circuit transformations programme diagram of even numbers pressure regulation gear (even numbers tap) work；
Figure 19 is the stylus changer timing flow chart of the vacuum switching mechanism of dry vacuum OLTC of the invention；
Figure 20 is the structural schematic diagram that dry type of the invention has the control system for carrying vacuum voltage-regulation tap changer.
The label in accompanying drawing is: 1, vacuum switching mechanism；11, insulate shaft；111, change gear；12, K conversion contact
Group；121, I static contact of K-；122, II static contact of K-；123, III static contact of K-；124, K moving contact；13, M exports sets of contacts；
131, I static contact of M-；132, II static contact of M-；133, III static contact of M-；134, M moving contact；14, transition resistance；15, cam；
151, A flange；152, B flange；16, insulation board；161, insulating protection ring；17, vacuum switch tube；2, permanent magnet mechanism；3, spring
Energy storage quick release mechanism；31, transmission shaft；311, eccentric rod；312, thumb wheel；32, bottom plate；33, upper slide box；331, card slot；
332, outer idler wheel；333, internal chute；34, lower slide box；341, block is discharged；342, linear type track groove；343, external chute；344, interior
Idler wheel；35, guide rail；351, buffer spring；36, limiter；361, spacing pole socket；362, gag lever post；363, position-limited wheel；364, multiple
Position spring；37, energy-stored spring；38, spring card；39, side plate；391, guide rail sealing plate；310, claw；3101, close to switch；
3102, close to switch installation board；4, motor drive mechanism；5, driving rack.
Specific embodiment
With reference to the accompanying drawings and detailed description (embodiment) the present invention is further illustrated, but be not intended as pair
The foundation that the present invention limits.
As shown in Figure 1 to Figure 3, dry vacuum OLTC, including vacuum switching mechanism 1；Its main feature is that: the vacuum switching machine
The power intake of the insulation shaft 11 of structure 1 is equipped with change gear 111, change gear 111 and set on driving rack 5 below
Cooperation is driven by driving rack 5, and driving rack 5 is set on spring energy-storage relieving mechanism 3 or permanent magnet mechanism 2.
Embodiment 1:(referring to fig. 4 and Fig. 5)
The driving rack 5 is set on spring energy-storage quick release mechanism 3.The spring energy-storage quick release mechanism 3 wraps
Bottom plate 32 is included, across the transmission shaft 31 of the bottom plate 32 setting, and the machine core being arranged on bottom plate 32；The machine core includes sliding
The lower slide box 34 of 33 sum of upper slide box of dynamic cooperation；Two, which are equipped with, between the upper slide box 33 and lower slide box 34 is cased with energy-stored spring 37
Guide rail 35, and match to merge by sliding pair with two guide rails 35 and be located at two spring cards of 37 two sides of energy-stored spring
38；The upper slide box 33 and 34 two sides of lower slide box are equipped with claw 310, and described two spring cards 38 are by being located at same side
Claw 310 limits；The bottom of the lower slide box 34 is equipped with release block 341, corresponding, and the bottom plate 32 is equipped with a pair of of limiter
36, the upper slide box 33 is equipped with a pair of of card slot 331；The bottom of the lower slide box 34 is additionally provided with linear type track groove 342, described
The top of transmission shaft 31 is equipped with eccentric rod 311, and the end of eccentric rod 311 is equipped with thumb wheel 312, thumb wheel 312 and linear type track groove
342 match；The driving rack 5 is set to the top of upper slide box 33.
The lateral wall of the lower slide box 34 is equipped with external chute 343, external chute 343 and is fixed on 33 lateral wall of upper slide box
Outer idler wheel 332 cooperate；The inner sidewall of the upper slide box 33 is equipped with internal chute 333, internal chute 333 and is fixed in lower slide box 34
Internal trolley 344 on side wall cooperates.
The limiter 36 includes the spacing pole socket 361 on bottom plate 32, spacing pole socket 361 and the one of gag lever post 362
End is hinged, and the other end of gag lever post 362 is equipped with position-limited wheel 363, and the lower section of position-limited wheel 363 is equipped with reset spring 364.
Side where the 32 upper limit device of bottom plate 36 be equipped with one piece of L-type close to switch installation board 3102, close to opening
It closes mounting plate 3102 and is equipped with 2 close to switch 3101, two position-limited wheels 363 is made to be located at the corresponding sense close to switch 3101
It should be apart from interior.
The both ends of two guide rails 35 are respectively inserted on the jack on two blocks of side plates 39 of left and right arrangement, outside jack
Side is equipped with guide rail sealing plate 391；Wherein a guide rail 35 and the lower slide box 34 are cooperated by sliding pair, another guide rail 35 and institute
Upper slide box 33 is stated to cooperate by sliding pair；It is arranged on the guide rail 35 cooperated with upper slide box 33 positioned at the upper slide box 33 and side plate
Buffer spring 351 between 39.
The working principle of spring energy-storage relieving mechanism: shown in as shown in Figure 1, Figure 2, Fig. 4 and Fig. 5, the operating of motor drive mechanism 4, which drives, to be passed
The rotation of mantle tooth, after transmission shaft 31 obtains power input by transmission cone tooth, transmission shaft 31 drives eccentric rod 311 to rotate, and leads to
It crosses thumb wheel 312 and makees track rotation in linear type track groove 342, since linear type track groove 342 is connect with lower slide box 34, thus
Eccentric rod 311 is set to drive lower slide box 34 along guide rail 35 to a Slideslip, and at this point, energy-stored spring 37 is existed by spring card 38
Accumulation of energy compression is constantly done in upper slide box 33 and lower slide box 34, simultaneously because at the card slot 331 of 33 side of upper slide box and position-limited wheel 363
In detent position, so that 34 side sliding edge compressed energy-storage spring 37 of lower slide box is achieved, when lower slide box 34 slides into regulation row
Cheng Shi, release block 341 depresses position-limited wheel 363, so that 33 quick release of upper slide box, 33 other side of upper slide box while release
Card slot 331 and another position-limited wheel 363 be completed at the same time clamping matching.
After transmission shaft 31 obtains the input of next power, lower slide box 34 process can try again reversely as described above
Sliding, after release block 341 discharges the position-limited wheel 363 of the other side again, process work is primary anti-as described above for the meeting of upper slide box 33
To abrupt release.
After release movement finishes, upper slide box 33 is moved to new latched position, the position-limited wheel on another side bayonet slot 331
363 under the effect of reset spring 351, forms card again to be matched on the card slot 331 of upper slide box 33, upper slide box 33 is weighed again
It is new to lock, it is ready for second of movement.
By the effect of upper slide box 33, driving rack 5 drives change gear 111 in insulation shaft 11 to rotate, and completes switching
Map function.
After each effective action of spring fast energy storage relieving mechanism, wherein 1 position-limited wheel 363 can in place, to connect
Nearly switch 3101 can sense, electric signal is sent to controller, and another position-limited wheel 363 is in compressive state, corresponds to
Incude close to switch 3101 less than electric signal, i.e. for controller under mechanism normal operating conditions, what is received always is 1 group fixed
When the electric signal converted；Once mechanism malfunction, it will cause following 2 kinds of states: one is 2 position-limited wheels 363 less than
Position, 2 all incude less than signal close to switch 3101；Although another situation is that 1 position-limited wheel 363 is in place, and another is limited
Position wheel 363 is compressed, but has spent the defined time, and signal changes not yet, and controller can be immediately performed locking and protect at this time
Shield movement, cuts off motor power.
Embodiment 2:
Referring to Fig. 6-Fig. 8, the vacuum switching mechanism 1 includes insulation board 16, and the shaft being arranged across insulation board 16
11；The two sides of the insulation board 16 are respectively equipped with K conversion contact group 12 and M output sets of contacts 13；The K of the insulation board 16 is converted
12 side of sets of contacts is additionally provided with vacuum extinction component；The vacuum extinction component includes vacuum switch tube 17 and for driving vacuum
The cam changeover mechanism of 17 division of switching tube movement, and the cam 15 in shaft 11；The cam 15 has A flange
151 and B flange 152；The K conversion contact group 12 includes I static contact 121 of K-, II static contact 122 of K-, III static contact of K-, 123 and
The K moving contact 124 rotated with shaft 11；One end of the K moving contact 124 connects with I static contact 121 of K- always, and the other end is in A
The switching that II static contact 122 of K- arrives III static contact 123 of K- is completed when flange 151 works, and there are off-states in handoff procedure；
The M output sets of contacts 13 includes I static contact 131 of M-, II static contact 132 of M-, III static contact 133 of M- and rotates with shaft 11
M moving contact 134；One end of the M moving contact 134 connects with I static contact 131 of M- always, and the other end is in the work of A flange 151 and B
It completes II static contact 132 of M- in the interval time that flange 152 works to switch to III static contact 133 of M-, and handoff procedure does not break
Open state.
16 two sides of insulation board are equipped with insulating protection ring 161, the static contact and K conversion contact group of the M output sets of contacts 13
12 static contact is annularly arranged in insulating protection ring 161, wherein between III static contact 123 of II static contact 122 of K- and K-
Gap is greater than the width of K moving contact 124, to guarantee to exist from II static contact 122 of K- to the handoff procedure of III static contact 123 of K- disconnected
Open state (off-state is shown in Figure 13)；III static contact 133 of M- is less than the width of M moving contact 134 with the gap of II static contact 132 of M-
Degree, so off-state is not present in its handoff procedure, but there are bridge status, i.e. I static contact 131 of M-, II static contact of M-
132, the transition state that III static contact of M-, 133 three bridges together (transition state is shown in Figure 16).
The shape of A flange 151 and B flange 152 is identical, and working surface is that the center of curvature is overlapped with the axis of rotation of cam 15
Cambered surface, the arc length of working surface be equivalent to full circle 1/10th (i.e. A flange 151 work when, the angle that cam 15 turns over is
36°)；The middle line angle of A flange 151 and B flange 152 is 100 ° (i.e. at the interval that the work of A flange 151 and B flange 152 work
In time, the angle that cam 15 turns over is 64 °).
Vacuum switching mechanism of the invention is made below in conjunction with circuit theory and changeover program (referring to Fig. 7-19) further
Explanation.In circuit diagram, V represents vacuum switch tube 17, and R represents transition resistance 14.
The working principle of vacuum switching mechanism 1: when work, I static contact 121 of K- connects with III static contact 133 of M-, and K- II is quiet
Contact 122 connects with transition resistance and singular gear connector respectively, and III static contact 123 of K- connects with even numbers gear connector；M- I is quiet
Contact 131 connects with load, and II static contact 132 of M- and III static contact 133 of M- connect with the both ends of vacuum switch tube 17 respectively.
As shown in Figure 9 and Figure 10, the present invention is designed using " leading modification " transition circuit, and one group of K conversion contact group 12 is arranged
Sets of contacts 13 is exported with another group of M.This two groups of contacts are converted under no-load, are finally swung to onto work tap, are played simultaneously
Buffer action between single even numbers tap.When dry vacuum OLTC be in odd number tap (singular gear) operation when, K moving contact 124 with
I static contact 121 of K-, II static contact 122 of K- are connected, and M moving contact 124 accordingly connects with I static contact 121 of M-, II static contact 122 of M-
It is logical；When dry vacuum OLTC is in even numbers tap (even numbers gear) operation, K moving contact 124 and I static contact 121 of K-, K- III-
Static contact 123 is connected, and M moving contact 124 is accordingly connected with I static contact 131 of M-, III static contact 133 of M-.In single even numbers tap changing
In the process, K conversion contact group 12 is changed without idling, and no electric arc generates.When being in bridge joint during single even numbers tap changing,
M output sets of contacts 13 also has bridge joint II static contact 132 of M-, III static contact 133 of M- accordingly, so that it is guaranteed that interrupt load does not export
Electric current.
As shown in Fig. 9-17, in conversion program, the conversion program of M output sets of contacts 13 and K conversion contact group 12 has
Strict requirements.K conversion contact group 12 must complete conversion during vacuum switch tube 17 disconnects, and M output sets of contacts 13 also must
Conversion must be completed during vacuum switch tube 17 is closed.In dry type OLTC, when switching from singular tap → even numbers tap, vacuum
Switching tube 17 first disconnects to be closed afterwards；And when even numbers tap → odd number tap switching, vacuum switch tube 17 closes first and then disconnect.
Referring to Fig. 9-17, being switched to the process that even numbers taps from odd number tap is (being switched to 2 grades from 1 grade): in odd number point
When connecing work, K moving contact 124 is in and I static contact 121 of K-, II static contact of K-, 122 on-state, and electric current flows through on-state
Under vacuum switch tube 17, after being connected to transformation directive, shaft 11 is rotated with moving cam 15 first, and A flange 151 makes vacuum switch
Pipe 17 disconnects for the first time, and transition resistance 14 imports work at this time, and K moving contact 124 is quiet by I static contact 121 of K-, K- II at the same time
122 on-state of contact swings to I static contact 121 of K-, III static contact of K-, 123 on-state, is hereafter rotated by cam 15 so that true
Second of blank pipe 17 connection of switch, while shaft 11 continues to rotate so that M moving contact 134 is by I static contact 131 of M-, II stationary contact of M-
First 132 on-state, transition be I static contact 131 of M-, II static contact 132 of M-, III static contact of M-, 133 three connect bridging shape
State then swings to I static contact 131 of M-, III static contact of M-, 133 on-state, and then shaft continues to rotate cam 15, B flange 152
So that second of vacuum switch tube 17 disconnection, completes to be switched to even numbers tap from odd number tap.
Embodiment 3:
Referring to fig. 20, dry vacuum OLTC of the invention further includes control system；The control system includes single-chip microcontroller, single
Piece machine is connect with OLED display and GPRS communication module respectively；The OLED display has wifi communication function.
As shown in figure 20, the control display is controlled using single-chip microcontroller, by metering chip to the secondary survey electricity of transformer
Pressure sampling, is compared calculating with preset voltage range values through CPU, when condition is set up, makes corresponding ascending, descending control,
It monitors the signals such as the gear, voltage, failure of tap switch and historical data simultaneously and automatically records, can be connected by corresponding interface
Connect computer, mobile phone, parallel controller etc..User can pass through network voltage and preset burning voltage in monitoring room by PC
Range compares calculating, and load ratio bridging switch is manually or automatically arranged and is operated, and monitors the work of load ratio bridging switch
State and supply voltage.
The above-mentioned generality to invention involved in the application is described and be should not be understood to the description of its specific embodiment
For be to the inventive technique scheme constitute limitation.Those skilled in the art can not disobey according to disclosure herein
Under the premise of invention constituent element involved in carrying on the back, to above-mentioned general description or/and specific embodiment (including embodiment)
In public technology feature increased, reduced or combined, formed and belong to other technical sides within the application protection scope
Case.
Claims (10)
1. dry type, which has, carries vacuum voltage-regulation tap changer, including vacuum switching mechanism (1)；It is characterized by: the vacuum switching machine
The power intake of the insulation shaft (11) of structure (1) is equipped with change gear (111), change gear (111) be set to below
Driving rack (5) cooperation is driven by driving rack (5), and driving rack (5) is set to spring energy-storage relieving mechanism (3) or permanent magnet mechanism
(2) on.
2. dry type according to claim 1, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: the driving rack (5)
On spring energy-storage relieving mechanism (3).
3. dry type according to claim 2, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: the spring energy-storage is quick
Relieving mechanism (3) includes bottom plate (32), passes through the transmission shaft (31) of the bottom plate (32) setting, and be arranged on bottom plate (32)
Machine core；The machine core include the upper slide box (33) being slidably matched and lower slide box (34)；The upper slide box (33) and lower slide box
(34) it is equipped with two guide rails (35) for being cased with energy-stored spring (37) between, and is matched with two guide rails (35) by sliding pair and is merged
It is located at two spring cards (38) of energy-stored spring (37) two sides；The upper slide box (33) and lower slide box (34) two sides are all provided with
Have claw (310), described two spring cards (38) are limited by being located at the claw (310) of same side；The lower slide box (34)
Bottom be equipped with release block (341), corresponding, the bottom plate (32) is equipped with a pair of of limiter (36), the upper slide box (33)
It is equipped with a pair of of card slot (331)；The bottom of the lower slide box (34) is additionally provided with linear type track groove (342), the transmission shaft
(31) top is equipped with eccentric rod (311), and the end of eccentric rod (311) is equipped with thumb wheel (312), thumb wheel (312) and linear type rail
Mark slot (342) matches；The driving rack (5) is set to the top of upper slide box (33).
4. dry type according to claim 3, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: the lower slide box (34)
Lateral wall is equipped with external chute (343), and external chute (343) cooperates with the outer idler wheel (332) being set on upper slide box (33) lateral wall；
The inner sidewall of the upper slide box (33) is equipped with internal chute (333), internal chute (333) with it is interior on lower slide box (34) inner sidewall
Idler wheel (344) cooperation.
5. dry type according to claim 4, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: limiter (36) packet
The spacing pole socket (361) being set on bottom plate (32) is included, spacing pole socket (361) and one end of gag lever post (362) are hinged, gag lever post
(362) the other end is equipped with position-limited wheel (363), and the lower section of position-limited wheel (363) is equipped with reset spring (364).
6. dry type according to claim 5, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: on the bottom plate (32),
Side where limiter (36) is equipped with close to switch installation board (3102)；It is described to be equipped with close to switch installation board (3102)
Two, close to switch (3101), make two position-limited wheels (363) correspondingly be located at two distance of reaction close to switch (3101)
It is interior.
7. being had according to dry type described in claim 3 to 6 any claim and carrying vacuum voltage-regulation tap changer, it is characterised in that:
The both ends of two guide rails (35) are respectively inserted on the jack on two pieces of side plates (39) of left and right arrangement, are set on the outside of jack
There are guide rail sealing plate (391)；Wherein a guide rail (35) and the lower slide box (34) are cooperated by sliding pair, another guide rail (35)
Cooperated with the upper slide box (33) by sliding pair；It is arranged with on the guide rail (35) of upper slide box (33) cooperation positioned at the upper cunning
Buffer spring (351) between box (33) and side plate (39).
8. dry type according to claim 1,2 or 3, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: the vacuum is cut
Structure (1) of changing planes includes insulation board (16), and passes through the shaft (11) of insulation board (16) setting；The two sides of the insulation board (16)
It is respectively equipped with K conversion contact group (12) and M output sets of contacts (13)；K conversion contact group (12) side of the insulation board (16)
It is additionally provided with vacuum switch tube (17) and the cam changeover mechanism for driving vacuum switch tube (17) division to act, and is set to and turns
Cam (15) on axis (11)；The cam (15) has A flange (151) and B flange (152)；The K conversion contact group (12)
Including I static contact of K- (121), II static contact of K- (122), III static contact of K- (123) and the K moving contact rotated with shaft (11)
(124)；One end of the K moving contact (124) connects with I static contact of K- (121) always, and the other end is when A flange (151) work
The switching that II static contact of K- (122) arrive III static contact of K- (123) is completed, and there are off-states in handoff procedure；The M output
Sets of contacts (13) includes I static contact of M- (131), II static contact of M- (132), III static contact of M- (133) and rotates with shaft (11)
M moving contact (134)；One end of the M moving contact (134) connects with I static contact of M- (131) always, and the other end is in A flange
(151) it works and completes II static contact of M- (132) in the interval time of B flange (152) work and cut to III static contact of M- (133)
It changes, and handoff procedure is not turned off state.
9. dry type according to claim 8 have carry vacuum voltage-regulation tap changer, it is characterised in that: the A flange (151) and
The shape of B flange (152) is identical, and working surface is the cambered surface that the center of curvature is overlapped with the axis of rotation of cam (15), worksheet
The arc length in face is equivalent to 1/10th of full circle；The middle line angle of A flange (151) and B flange (152) is 100 °.
10. dry type according to claim 1, which has, carries vacuum voltage-regulation tap changer, it is characterised in that: further include control system；
The control system includes single-chip microcontroller, and single-chip microcontroller is connect with OLED display and GPRS communication module respectively；The OLED is shown
Device has wifi communication function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278603.2A CN109243880A (en) | 2018-10-30 | 2018-10-30 | Dry type, which has, carries vacuum voltage-regulation tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278603.2A CN109243880A (en) | 2018-10-30 | 2018-10-30 | Dry type, which has, carries vacuum voltage-regulation tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109243880A true CN109243880A (en) | 2019-01-18 |
Family
ID=65079619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278603.2A Pending CN109243880A (en) | 2018-10-30 | 2018-10-30 | Dry type, which has, carries vacuum voltage-regulation tap changer |
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| Country | Link |
|---|---|
| CN (1) | CN109243880A (en) |
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