CN203397928U - Vacuum on-load tap-changer - Google Patents
Vacuum on-load tap-changer Download PDFInfo
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- CN203397928U CN203397928U CN201320417416.4U CN201320417416U CN203397928U CN 203397928 U CN203397928 U CN 203397928U CN 201320417416 U CN201320417416 U CN 201320417416U CN 203397928 U CN203397928 U CN 203397928U
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Abstract
The utility model discloses a vacuum on-load tap-changer which comprises a frame, a power drive mechanism, three vacuum envelope switching mechanisms and a transformer winding tapping position adjusting device, wherein the power drive mechanism is arranged above one side of the frame to control a slide plate to conduct horizontal step motion rapidly one the one hand and to drive the transformer winding tapping position adjusting device to move through the driving shaft. Each vacuum envelope switching mechanism comprises a shift fork, a former bar and two vacuum envelopes, and the shift fork when driven by the slide plate drives the former bar to rotate, thereby driving the two vacuum envelopes to switch in turns. The transformer winding tapping position adjusting device comprises two screws, an insulation shaft and two insulation crossbeams installed on a screw nut. When driven by the driving shaft, the insulation shaft drives the two screws to rotate, and the screw nut drives two insulation crossbeams to move vertically, thereby adjusting the position of a transformer winding tapping. The vacuum on-load tap-changer is low in cost, high in security and precision and long in service lifetime.
Description
Technical field
The utility model relates to shunting switch research field, particularly a kind of vacuum on-load operation switch.
Background technology
On load tap changer selects the different tapping of transformer to change transformation ratio for passing through under loading condition, thereby can adjust in time line voltage, effective power and reactive power.
Application number is that the patent of WO00/24013 discloses a kind of three-phase step switch, this switch is the step switch that can switch incessantly between the different tapping of stepping adjustable transformer, every phase only adopts two vacuum bubbles as electric switchgear, realizes major-minor circuit and switches.This step switch arranges that two rows are staggered is arranged in juxtaposition fixing selection contact, is connected respectively with tapping; Wherein by unique drive motors, draw the first drive shaft and by Maltese segment, realize longitudinal selection of motion contact, and draw the second driving shaft by compressed energy-storage device, sledge drive the major-minor circuit of realizing horizontal arrangement are switched by accumulator.In this switch, all switching parts are all placed in a monoblock middle part and are provided with on the insulation board of three grooves, two vacuum bubbles of every phase, switching mechanism each several part are all fixed on insulation board, balladeur train one side is arranged in the guide groove that balladeur train one is fixed on insulation board by roller bearing, and opposite side is arranged in two straight line imitation-shaped grooves on gauge finder by two roller bearings.This structure has following shortcoming: (1), because three grooves are offered at collets middle part, causes collets rigidity to reduce, and distortion is large.(2) You compare great gap between the groove of roller bearing and gauge finder, carries in a process in vacuum bubbles that gauge finder is stressed to be pulled down, and balladeur train tilts, and vacuum bubbles stroke has greatly changed, and vacuum bubbles operating accuracy is not high.(3) in this patent, shaft insulation is arranged on central rack, across three-phase copper conducting rod, and the very close shaft insulation of insulation crossbeam, when there was dampness in the air, shaft insulation is subject to the time of tide at the as easy as rolling off a log creepage phenomenon that occurs in shaft insulation surface, may cause insulator breakdown, causes the accident.(4) this patent be second driving shaft of drawing from unique drive source in order to drive accumulator, but because the second driving shaft drives the power of accumulator larger compared with long, thereby easily cause that deformation of driving shaft affects the repeating motion precision of structure.(5) this patent adopts the insulation board of a monoblock, and insulation board materials are many, involve great expense.(6) in this patent, three-phase motion contact is installed on two eradication edge crossbeams, and insulation crossbeam is driven and longitudinally selected fixed contact by Maltese segmented structure, and this structure is large to the impact of fixed contact, and vibration is large.
Therefore, design that a kind of cost is low, reliability is high, precision is high and the vacuum on-load operation switch of long service life has great practical value.
Utility model content
Main purpose of the present utility model is that the shortcoming that overcomes prior art, with not enough, provides a kind of vacuum on-load operation switch, and this switch has advantages of that cost is low, safe, precision is high and long service life.
The purpose of this utility model realizes by following technical scheme: vacuum on-load operation switch, comprising:
Frame, is provided with upper and lower two crossbeams in frame;
Power-driven mechanism, be arranged on the top of frame one side, comprise drive motors, accumulator and multiple sets of teeth wheel transmission component, drive motors drives the driving balladeur train of accumulator by the first gear-driven assembly, during to certain position, the driven balladeur train of accumulator releases energy and drives a slide plate to do fast the galloping motion of level, meanwhile, drive motors is controlled a top-down driving shaft by the second gear-driven assembly and is rotated;
Vacuum bubbles switching mechanism, comprise three, respectively corresponding each phase, the slide plate that each vacuum bubbles switching mechanism drives with power-driven mechanism is on the one hand connected, be arranged on the other hand on the crossbeam in frame, also be fixedly connected with frame backboard simultaneously, each vacuum bubbles switching mechanism comprises shift fork, gauge finder and two vacuum bubbles, shift fork is driven while rotating by slide plate, the rotation of drive gauge finder, gauge finder is provided with guide groove, and one end of two vacuum bubbles is located in guide groove, when gauge finder rotates, two vacuum bubbles are switched one on the other in turn;
Transformer Winding tap position adjusting device, comprise two rhizoid bars, a shaft insulation and be arranged on two on feed screw nut and thoroughly do away with edge crossbeam, the driving shaft that shaft insulation drives with power-driven mechanism by gear assembly is connected, two rhizoid bars are separately positioned on frame two bottom sides face, Qie Qi end is connected with this shaft insulation respectively, synchronous rotary under the driving of shaft insulation, feed screw nut's lengthwise movement on screw mandrel, two thoroughly do away with edge crossbeam drives the synchronous lengthwise movement in all motions contact distributing thereon to select Transformer Winding tap under feed screw nut drives;
Above-mentioned each mechanism and device are all arranged in frame.
Concrete, described frame back is provided with an insulating base, 3 groups of vertical fixed contact installing racks are installed on it, every group of fixed contact installing rack consists of side by side two insulating supports, the fixedly selection contact being crisscross arranged is installed on fixed contact installing rack, be arranged on two on feed screw nut and thoroughly do away with and uniform on edge crossbeam three groups of motion contacts that are comprised of the contact of moving to be installed, motion contact consists of spring pre-tightening by two copper guide cards, and selection contact and copper conducting rod are fixedly clamped simultaneously.
Concrete, in described power-driven mechanism, be provided with a grillage, a drive motors is installed in grillage below, drive motors output shaft is through the hole of offering on grillage, the first gear-driven assembly comprises gear reduction and cam, and gear reduction comprises several gears, and one of them gear is connected with motor output shaft, another gear is connected with cam, and the driving balladeur train of accumulator and driven balladeur train are limited in respectively on three rail plates and are arranged on public support; Between driven balladeur train and driving balladeur train, utilize energy-stored spring pretension, cam is connected with driving balladeur train.
Preferably, described vacuum on-load operation switch also comprises a gear indicating device, comprise indication panel, pointer, pointer driving shaft and driving member, pointer driving shaft one end is connected with pointer end, the other end is connected with driving member, driving member is connected with the power transmission shaft of drive motors, and pointer driving shaft drives pointer to be rotated on indication panel, is marked with the numeral relevant to gear on indication panel.Thereby facilitate staff to understand current active tap numbering, improve ornamental.
Further, described driving member is bevel gear transmission, two bevel gears, consists of, and one of them is installed on the shaft part of pointer driving shaft, and another is installed in the top of outer drive shafts, and two bevel gears are intermeshed.
Preferably, described vacuum on-load operation switch also comprises a hand cranking structure, be arranged on top-down driving shaft middle part, comprise that one is hand with driving shaft, two hand crank bearing pedestals, handly with driving shaft, offer open slot, opening direction is towards frame dead ahead, and when driving by hand crank, driving shaft drives top-down driving shaft in power-driven mechanism to be rotated.This design facilitates staff's manual operation on the one hand, is convenient to observe switch gear indicating device simultaneously, need to stand in frame side, by the quick galloping motion of slide plate, brings potential danger while avoiding on the other hand operating due to staff in prior art.
Preferably, between described two crossbeams, be evenly equipped with three collets, form switching mechanism fixed mount; Every collets rear side is provided with two vacuum bubbles, is arranged side by side.This mode has not only reduced materials'use amount, has reduced cost, has solved the problem that causes insulating material distortion because monoblock base plate is long simultaneously, has improved precision.
Preferably, described slide plate one end is connected with the driven balladeur train of accumulator by an oscillating bearing, and bottom is uniform is fixed with three slide plate supports; Slide plate support is concavity structure, in two inner sides, is separately installed with a roller bearing; One guide bearing is arranged at top; Skateboard-axis bearing is arranged on the crossbeam in frame, its both sides and top are equipped with straight trough, roller bearing constrains in the straight trough of both sides, top guide bearing is constrained in the straight trough of top, play the effect of slide plate straight-line guidance, thereby itself and gauge finder do not have longitudinal restraint, can not affect vacuum bubbles switch and carry a stroke.
Concrete, corresponding each the vacuum bubbles switching mechanism in described nose has been offered a groove, in each groove, by screw, be fixed with a switching shifting block, switch shifting block top one roller bearing is installed, on collets, be provided with Yi Ge hole and a fan groove, in described hole, be fixed with a central shaft, switch shift fork and be arranged on central shaft by bearing, shift fork upper end is connected with shifting block top roller bearing, and moving contact is arranged on shift fork lower end; In fan groove upper end, be fixed with a water conservancy diversion arc plate, in both sides, fan groove lower end, have respectively the contact of determining; On moving contact, there are two contact blades by spring pre-tightening, clamp water conservancy diversion arc plate simultaneously and determine contact with one of them.
Further, the rear side of described slide plate and collets, a guide plate is fixed on collets and entablature together with a square insulating plate, has a hole so that a latch to be installed on guide plate; Shift fork is arranged on latch by bearing, and shift fork and a fan-shaped gauge finder are fastenedly connected; On fan-shaped gauge finder, offer several by many grooves that form around the arc of latch, inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large; The middle and lower part of collets is fixed with two vacuum bubbles by two vacuum bubbles mount pads, and each vacuum bubbles head and one is put forward side contacts in a device draw-in groove; Described guide plate middle part offers a long guide groove and both sides offer respectively draw-in groove ，Ti Weiqi corner and are equipped with roller bearing and are also arranged on respectively in two draw-in grooves, and its head is all limited in the long straight trough of guide plate by roller bearing; On collets, by insulating support rod, fix a fixed contact in addition, accompany a junction block thereon, each vacuum bubbles head is provided with a junction block equally, and wire connects two junction blocks; In addition, in the same side of slide plate, Axis Tripod bearing is installed, a roller bearing is installed in the middle and is installed in shift fork open slot.
Preferably, describedly in top-down driving shaft, be also provided with a free-wheeling clutch.By this device, when drive motors, oppositely select or reverse when hand, motion contact was switched and is not had counter motion at once in the first round, and had just switched change over contact and realized the switching that vacuum bubbles one is taken turns; Upper, while once switching along equidirectional, idle stroke switch is inoperative, again handles before machinery and electrical switchgear discharging accumulator, and arrival Xin position, contact first makes to move.
The course of work of the present utility model is: in order to realize major and minor circuit under electrical network loading condition, switches, and can be by manual mode and automatic mode.Under automatic mode, power-driven mechanism rotates cam mechanism by the first gear-driven assembly on the one hand, and then make to drive balladeur train to move to the left or to the right compression energy-stored spring, when turning over 180 trigger switches while spending, cam mechanism discharges driven balladeur train, make it drive rapidly slide plate to move to the left or to the right, two shift forks of side before and after stirring by skateboard, force the motion one on the other in turn of two vacuum bubbles, and change over contact once dials and cut in turn to the right left and next time, the level that completes major and minor circuit is selected; By the second gear-driven assembly, controlling a top-down driving shaft is on the other hand rotated, drive the rotation of bottom insulation axle, by the feed screw nut of shaft insulation drive chassis both sides, drive two crossbeams and the synchronous rising in the contact of respectively moving or decline, be used for selecting Transformer Winding tap, realize longitudinal selection of tapping.By this mode, accurately determine the tapping that shunting switch is selected.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the utility model medium power driving mechanism comprises multiple sets of teeth wheel transmission component, using this as drive source, not only can simplify the internal structure of an organization, be convenient to install, simultaneously, because drive motors output shaft is directly delivered to power in accumulator and the torsional deformation causing without further drive shaft by gear drive, motion accurately.This mechanism is placed in frame top one side in addition, increases the weight that upper rack divides, and inertia is large, easily causes large vibration in slide plate horizontal movement, and this has weakened the vibrations of shunting switch to a certain extent.
2, the moving up and down of contact of moving in the utility model adopts feed screw nut pair to handle.The Maltese segment Drive Structure of this structure and prior art has following advantage: the one, and feed screw nut pair provides very big speed ratio, without as Maltese structure, the very gear reduction of big speed ratio being set, has reduced gear cost; The 2nd, can be steadily at the uniform velocity select up or down new fixed contact, reduce the elliptical gear of motion contact to fixed contact; The 3rd, feed screw nut has good auto-lock function, can keep the state of original invariant position after switching completes.
3, in the utility model, shaft insulation is arranged on frame bottom, away from three-phase copper conducting rod high-pressure section.Existing apparatus, when running into wet weather, the shaft insulation making moist is prone to creepage problem owing to crossing proximal pole apart from high-tension electricity, causes insulation breakdown, thereby causes the accident.And shaft insulation structure of the present utility model can solve this problem.
4, in the utility model hand-operated mechanism over against frame header board, facilitate on the one hand staff's manual operation, be convenient to observe switch gear indicating device simultaneously, while avoiding on the other hand operating due to staff in prior art, need to stand in frame side, by the quick galloping motion of slide plate, bring potential danger.
5, the utility model utilizes the fixed mount of two eradication edge crossbeams and three collets formations to replace the monoblock insulating base of prior art, not only reduced materials'use amount, reduce cost, solved the problem that causes insulating material distortion because monoblock base plate is long simultaneously, improved precision.
6, the utility model middle slide plate constrains in skateboard-axis bearing by slide plate support, by skateboard-axis bearing, be fixed on the entablature of fixed mount, itself and gauge finder do not have longitudinal restraint, can not affect vacuum switch and carry a stroke, with this, improve performance accuracy and switch reliability.
7, in the utility model, be also provided with gear indicating device, thereby facilitate staff to understand current active tap numbering, also improve the ornamental of shunting switch simultaneously.
Accompanying drawing explanation
Fig. 1 is the front-view schematic diagram of the present embodiment device.
Fig. 2 is the local enlarged diagram at place, Fig. 1 middle slide plate front side.
Fig. 3 installs middle slide plate and crossbeam annexation schematic diagram described in Fig. 2.
Fig. 4 is gear indicating device structural representation in the present embodiment device.
Fig. 5 is the local enlarged diagram at Transformer Winding tap position adjusting device place in Fig. 1.
Fig. 6 is the local enlarged diagram of the present embodiment device middle slide plate and collets rear side.
Fig. 7 is that in the present embodiment, tapping is selected principle schematic.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
As shown in Figure 1, vacuum on-load operation switch described in the present embodiment, mainly comprises following four parts: (1) frame; (2) power-driven mechanism; (3) vacuum bubbles switching mechanism; (4) Transformer Winding tap position adjusting device.Respectively above-mentioned 4 parts are introduced respectively in detail below.
First be rack section, as shown in Figure 1, above-mentioned each mechanism and device are all arranged in frame 1, are provided with upper and lower two crossbeams 11,12 in frame 1.Between two crossbeams, be evenly equipped with three collets, form switching mechanism fixed mount.Specifically every collets rear side is provided with two vacuum bubbles, is arranged side by side.In conjunction with Fig. 7, frame back is provided with an insulating base, 3 groups of vertical fixed contact installing racks are installed on it, every group of fixed contact installing rack consists of side by side two insulating supports, the fixedly selection contact 62(N+5 being crisscross arranged is installed on fixed contact installing rack, N+4, N-3), be arranged on two on feed screw nut and thoroughly do away with the uniform three groups of motion contacts that formed by the contact of moving (630,631) that are provided with on edge crossbeam 490,491, motion contact consists of spring pre-tightening by two copper guide cards, is fixedly clamped simultaneously and selects contact 62 and copper conducting rod 61.
For power-driven mechanism, as shown in figs. 1 and 4, power-driven mechanism is arranged on the top of frame 1 one sides, wherein be provided with a grillage 35, a drive motors 2 is installed in grillage 35 belows, drive motors output shaft is through the hole of offering on grillage, the first gear-driven assembly comprises gear reduction 75 and cam, gear reduction 75 comprises several gears, one of them gear is connected with motor output shaft, another gear is connected with cam, and driving balladeur train 31 and the driven balladeur train 32 of accumulator are limited in respectively on three rail plates 34; Drive between balladeur train 31 and driven balladeur train 32 and utilize energy-stored spring pretension, cam is connected with driving balladeur train 31, and driven balladeur train 32 is connected with a slide plate 45.During application, drive motors 2 rotations, by gear reduction by torsional interaction in cam, from actuated by cams accumulator, drive balladeur train 31 to turn left or toward right-hand offset, compressed energy-storage spring, when motor is walked around certain angle, trigger release-push, thus make driven balladeur train 32 under the driving of energy-stored spring to the right or do fast the galloping motion of level left.This part drives for driving vacuum bubbles switching mechanism.
Meanwhile, drive motors 2 is also controlled a top-down driving shaft 42 by the second gear-driven assembly and is rotated.This driving shaft 42 is arranged on upper and lower two bearing pedestals 420,421, for driving transformer tapping position regulator by bearing.In order more to increase its application scenario, one hand cranking structure is also set in the present embodiment, just be arranged on the middle part of this top-down driving shaft 42, it comprises that one is hand with driving shaft 20, two hand crank bearing pedestals 422,423, handly with driving shaft 20, offer open slot, opening direction is towards frame 1 dead ahead, when driving by hand crank, handly with driving shaft 20, drives top-down driving shaft 42 in power-driven mechanisms to be rotated.
In addition, described in the present embodiment, shunting switch also comprises a gear indicating device, shown in Fig. 4, comprise indication panel 710, pointer 70, pointer driving shaft 72 and driving member, pointer driving shaft 72 one end are connected with pointer 70 ends, and the other end is connected with driving member, and driving member is connected with gear reduction 75, pointer driving shaft 72 drives pointer 70 to be rotated on indication panel 710, is marked with the numeral relevant to gear on indication panel 710.When pointer driving shaft 72 rotation, can find out from indication panel 710 the tapping numbering of current selection.Described driving member is bevel gear transmission, two bevel gears, consists of, and one of them is installed on the shaft part of pointer driving shaft, and as in figure 74, another is installed in the top of power transmission shaft, as 76, two bevel gears in figure are intermeshed.This part is driven by drive motors equally.
For vacuum bubbles switching mechanism, first illustrate how vacuum bubbles switching mechanism is driven by power-driven mechanism, as shown in Figure 3, power-driven mechanism drives a slide plate 45 to do fast the galloping motion of level, these slide plate 45 one end are connected with the driven balladeur train 32 of accumulator by an oscillating bearing, and bottom even is provided with three slide plate supports 453; Each slide plate support 453 is concavity structure, is separately installed with a roller bearing 454 in two inner sides; One guide bearing is arranged at top; Crossbeam Shang，Qi both sides and top that one skateboard-axis bearing 450 is arranged in frame are equipped with straight trough, and roller bearing 454 constrains in the straight trough of both sides.Thereby itself and gauge finder do not have longitudinal restraint.When energy-stored spring discharges, driven balladeur train 32 is subject to energy-stored spring to drive fast motion to the left or to the right, by oscillating bearing, drives slide plate 45 to move to the left or to the right.
Below in conjunction with Fig. 1,2 explanation each vacuum bubbles switching mechanism mechanisms corresponding in nose.Corresponding each the vacuum bubbles switching mechanism in nose has been offered a groove, in each groove, be bolted one and switched shifting block 451, switch shifting block 451 tops one roller bearing is installed, on collets, be provided with Yi Ge hole and a fan groove, in described hole, be fixed with a central shaft 522, shift fork 51 is mounted on central shaft by bearing 52, in fan groove upper end, be fixed with a water conservancy diversion arc plate 53, in both sides, fan groove lower end, be fixed with respectively and determine contact 541, 540, on moving contact 554, there are two contact blades 531 to pass through spring pre-tightening, one end is clamped in one of them and determines on contact, the other end is clamped on arc deflector always, when slide plate 45 is during toward left and right rapid movement, fork is switched shifting block stirs and then stirs moving contact, making moving contact follow shift fork is switched to fast another and determines on contact, therefore drive moving contact to switch to the left or to the right.
Below in conjunction with Fig. 1,6, illustrate that each vacuum bubbles switching mechanism is in the mechanism of the rear side of slide plate and collets.One guide plate 570 is bolted on collets 50 and entablature 12 together with a square insulating plate 501, has a hole so that a latch to be installed on guide plate 570; Shift fork 550 and a fan-shaped gauge finder 56 are bolted connection, and shift fork is arranged on latch by bearing; On fan-shaped gauge finder 56, offer two by many grooves that form around the arc of latch, inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large; Collets 50 middle and lower part is fixed with two vacuum bubbles 91,90 by vacuum bubbles mount pad 580,581, and each vacuum bubbles head and one is put forward side contacts in a device 571,572 draw-in grooves; Aforesaid guide plate 570 middle parts offer a long guide groove and both sides offer respectively draw-in groove, carrying a device 571 ,572 corners is equipped with roller bearing and is arranged on respectively in two draw-in grooves, its head is all limited in the long straight trough of guide plate 570 by roller bearing, with such limit method constraint, carry a device 571,572, make it can only carry along the longitudinal position; On collets, by insulating support rod 592, fix a fixed contact 59 in addition, accompany a junction block 593 thereon, each vacuum bubbles head is provided with a junction block 582,583 equally, and wire connects two junction blocks; In addition, in slide plate 45 the same side, Axis Tripod bearing 455 is installed, a roller bearing 552 is installed in the middle and is installed in shift fork 550 open slots.The vacuum bubbles break-make switching construction forming by this way, when slide plate 45 is left or to the right during rapid movement, stirred by roller bearing 552, shift fork 550 drives fan-shaped gauge finder to switch to the right or left, by the special deep-slotted chip breaker structure of fan-shaped gauge finder 56, handled and proposed a device rising or decline, the break-make that realizes two vacuum bubbles of control is switched.Small skew that it should be noted that the slide plate 45 of this structure can not act on vacuum bubbles stroke, therefore can not produce vacuum bubbles deviation of stroke.
For Transformer Winding tap position adjusting device, as shown in Figure 1,5, it comprise two rhizoid bars (as in figure one 48), a shaft insulation 43 and be arranged on two on feed screw nut and thoroughly do away with edge crossbeam 490,491, shaft insulation 43 is placed in frame 1 ，Qi two ends, bottom and all by two shaft insulation intermediate plates 431, is fixedly clamped on a minor axis 432; Minor axis 432 is arranged in bearing pedestal 430 by bearing, and its opposite side is connected with a gear mesh 440.Frame 1 both sides are provided with a screw mandrel 48 by bearing pedestal 480,481 respectively, and screw mandrel 48 lower ends are connected with gear mesh 440; Two insulation crossbeam 490,491 two ends are arranged on respectively on the feed screw nut 482 of both sides.Form by this way screw nut driving mechanism, when shaft insulation 43 is subject to driving shaft 42 that power-driven mechanism drives to drive rotation, thereby drive screw mandrel 48 rotations to make feed screw nut 482 drive the longitudinal uniform motion of two crossbeams 490,491.Two thoroughly do away with edge crossbeam drives the synchronous lengthwise movement in all motions contact distributing thereon to select Transformer Winding tap under feed screw nut drives.
Safer and accurate according to practical application, in the present embodiment, also in top-down driving shaft 42, be provided with a free-wheeling clutch, by this device when oppositely selection or reverse when hand of drive motors 2, not counter motion is at once switched in the first round in motion contact 631,630, and has just switched change over contact and realized the switching that vacuum bubbles one is taken turns; Upper, while once switching along equidirectional, idle stroke switch is inoperative, again handles before machinery and electrical switchgear discharging accumulator, and arrival Xin position, contact first makes to move.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (10)
1. vacuum on-load operation switch, is characterized in that, comprising:
Frame, is provided with upper and lower two crossbeams in frame;
Power-driven mechanism, be arranged on the top of frame one side, comprise drive motors, accumulator and multiple sets of teeth wheel transmission component, drive motors drives the driving balladeur train of accumulator by the first gear-driven assembly, during to certain position, the driven balladeur train of accumulator releases energy and drives a slide plate to do fast the galloping motion of level, meanwhile, drive motors is controlled a top-down driving shaft by the second gear-driven assembly and is rotated;
Vacuum bubbles switching mechanism, comprise three, respectively corresponding each phase, the slide plate that each vacuum bubbles switching mechanism drives with power-driven mechanism is on the one hand connected, be arranged on the other hand on the crossbeam in frame, also be fixedly connected with frame backboard simultaneously, each vacuum bubbles switching mechanism comprises shift fork, gauge finder and two vacuum bubbles, shift fork is driven while rotating by slide plate, the rotation of drive gauge finder, gauge finder is provided with guide groove, and one end of two vacuum bubbles is located in guide groove, when gauge finder rotates, two vacuum bubbles are switched one on the other in turn;
Transformer Winding tap position adjusting device, comprise two rhizoid bars, a shaft insulation and be arranged on two on feed screw nut and thoroughly do away with edge crossbeam, the driving shaft that shaft insulation drives with power-driven mechanism by gear assembly is connected, two rhizoid bars are separately positioned on frame two bottom sides face, Qie Qi end is connected with this shaft insulation respectively, synchronous rotary under the driving of shaft insulation, feed screw nut's lengthwise movement on screw mandrel, two thoroughly do away with edge crossbeam drives the synchronous lengthwise movement in all motions contact distributing thereon to select Transformer Winding tap under feed screw nut drives;
Above-mentioned each mechanism and device are all arranged in frame.
2. vacuum on-load operation switch according to claim 1, it is characterized in that, described frame back is provided with an insulating base, 3 groups of vertical fixed contact installing racks are installed on it, every group of fixed contact installing rack consists of side by side two insulating supports, the fixedly selection contact being crisscross arranged is installed on fixed contact installing rack, being arranged on two on feed screw nut thoroughly does away with and uniform on edge crossbeam three groups of motion contacts that are comprised of the contact of moving to be installed, motion contact consists of spring pre-tightening by two copper guide cards, is fixedly clamped simultaneously and selects contact and copper conducting rod.
3. vacuum on-load operation switch according to claim 1, it is characterized in that, in described power-driven mechanism, be provided with a grillage, a drive motors is installed in grillage below, drive motors output shaft is through the hole of offering on grillage, the first gear-driven assembly comprises gear reduction and cam, gear reduction comprises several gears, one of them gear is connected with motor output shaft, another gear is connected with cam, and the driven balladeur train of accumulator is limited in respectively on three rail plates with driving balladeur train; Drive between balladeur train and driven balladeur train and utilize energy-stored spring pretension, cam is connected with driving balladeur train, and slide plate is connected with driven balladeur train.
4. vacuum on-load operation switch according to claim 1, it is characterized in that, described vacuum on-load operation switch also comprises a gear indicating device, comprise indication panel, pointer, pointer driving shaft and driving member, pointer driving shaft one end is connected with pointer end, and the other end is connected with driving member, and driving member is connected with the power transmission shaft of drive motors, pointer driving shaft drives pointer to be rotated on indication panel, is marked with the numeral relevant to gear on indication panel.
5. vacuum on-load operation switch according to claim 4, is characterized in that, described driving member is bevel gear transmission, by two bevel gears, formed, one of them is installed on the shaft part of pointer driving shaft, and another is installed in the top of outer drive shafts, and two bevel gears are intermeshed.
6. vacuum on-load operation switch according to claim 1, it is characterized in that, described vacuum on-load operation switch also comprises a hand cranking structure, be arranged on top-down driving shaft middle part, comprise that one is hand with driving shaft, two hand crank bearing pedestals, handly with driving shaft, offer open slot, opening direction is towards frame dead ahead, when driving by hand crank, driving shaft drives top-down driving shaft in power-driven mechanism to be rotated.
7. vacuum on-load operation switch according to claim 1, is characterized in that, between described two crossbeams, is evenly equipped with three collets, forms switching mechanism fixed mount; Every collets rear side is provided with two vacuum bubbles, is arranged side by side.
8. vacuum on-load operation switch according to claim 3, is characterized in that, described slide plate one end is connected with the driven balladeur train of accumulator by an oscillating bearing, and bottom is uniform is fixed with three slide plate supports for it; Slide plate support is concavity structure, in two inner sides, is separately installed with a roller bearing; One guide bearing is arranged at top; Crossbeam Shang，Qi both sides and top that skateboard-axis bearing is arranged in frame are equipped with straight trough, and roller bearing constrains in the straight trough of both sides, and top guide bearing is constrained in the straight trough of top.
9. vacuum on-load operation switch according to claim 8, it is characterized in that, corresponding each the vacuum bubbles switching mechanism in described nose has been offered a groove, in each groove, by screw, be fixed with a switching shifting block, switch shifting block top one roller bearing is installed, on collets, be provided with Yi Ge hole and a fan groove, in described hole, be fixed with a central shaft, shift fork is arranged on central shaft by bearing, and shift fork upper end is connected with switching shifting block top roller bearing, and moving contact is arranged on shift fork lower end; In fan groove upper end, be fixed with a water conservancy diversion arc plate, in both sides, fan groove lower end, be respectively equipped with certain contact; On moving contact, there are two contact blades to pass through spring pre-tightening, clamp water conservancy diversion arc plate simultaneously and determine contact with one of them, when slide plate is during toward left and right rapid movement, fork is switched shifting block stirs and then stirs moving contact, make moving contact follow shift fork and be switched to fast another and determine on contact, drive moving contact to switch to the left or to the right.
10. vacuum on-load operation switch according to claim 9, is characterized in that, the rear side of described slide plate and collets, and a guide plate is fixed on collets and entablature together with a square insulating plate, has a hole so that a latch to be installed on guide plate; Shift fork is arranged on latch by bearing, and shift fork and a fan-shaped gauge finder are fastenedly connected; On fan-shaped gauge finder, offer several by many grooves that form around the arc of latch, inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large; The middle and lower part of collets is fixed with two vacuum bubbles by two vacuum bubbles mount pads, and each vacuum bubbles head and one is put forward side contacts in a device draw-in groove; Described guide plate middle part offers a long guide groove and both sides offer respectively draw-in groove ，Ti Weiqi corner and are equipped with roller bearing and are also arranged on respectively in two draw-in grooves, and its head is all limited in the long straight trough of guide plate by roller bearing; On collets, by insulating support rod, fix a fixed contact in addition, accompany a junction block thereon, each vacuum bubbles head is provided with a junction block equally, and wire connects two junction blocks; In addition, in the same side of slide plate, Axis Tripod bearing is installed, a roller bearing is installed in the middle and is installed in shift fork open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320417416.4U CN203397928U (en) | 2013-07-12 | 2013-07-12 | Vacuum on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320417416.4U CN203397928U (en) | 2013-07-12 | 2013-07-12 | Vacuum on-load tap-changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397928U true CN203397928U (en) | 2014-01-15 |
Family
ID=49909441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320417416.4U Withdrawn - After Issue CN203397928U (en) | 2013-07-12 | 2013-07-12 | Vacuum on-load tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397928U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337383A (en) * | 2013-07-12 | 2013-10-02 | 广州市德百顺电气科技有限公司 | Vacuum on-load tap changer |
| CN104112575A (en) * | 2014-07-08 | 2014-10-22 | 纪元电气集团有限公司 | On-load voltage regulating and capacitance regulating tapping switch |
| CN109449018A (en) * | 2018-12-23 | 2019-03-08 | 辽宁金立电力电器有限公司 | A kind of load ratio bridging switch |
| CN109524272A (en) * | 2018-11-09 | 2019-03-26 | 北京飞卡科技有限公司 | A kind of plug-in coaxial trigger |
| CN110193581A (en) * | 2019-07-07 | 2019-09-03 | 柳州铭士达电机有限公司 | A kind of efficient press machine |
| CN112816232A (en) * | 2020-12-31 | 2021-05-18 | 北京中瑞和电气有限公司 | Arc discharge explosion-proof test device in on-load tap-changer oil |
-
2013
- 2013-07-12 CN CN201320417416.4U patent/CN203397928U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337383A (en) * | 2013-07-12 | 2013-10-02 | 广州市德百顺电气科技有限公司 | Vacuum on-load tap changer |
| CN103337383B (en) * | 2013-07-12 | 2015-05-13 | 广州市德百顺电气科技有限公司 | Vacuum on-load tap changer |
| CN104112575A (en) * | 2014-07-08 | 2014-10-22 | 纪元电气集团有限公司 | On-load voltage regulating and capacitance regulating tapping switch |
| CN109524272A (en) * | 2018-11-09 | 2019-03-26 | 北京飞卡科技有限公司 | A kind of plug-in coaxial trigger |
| CN109524272B (en) * | 2018-11-09 | 2023-06-20 | 北京飞卡科技有限公司 | Plug-in coaxial change-over switch |
| CN109449018A (en) * | 2018-12-23 | 2019-03-08 | 辽宁金立电力电器有限公司 | A kind of load ratio bridging switch |
| CN109449018B (en) * | 2018-12-23 | 2023-11-07 | 辽宁金立电力电器有限公司 | On-load tap-changer |
| CN110193581A (en) * | 2019-07-07 | 2019-09-03 | 柳州铭士达电机有限公司 | A kind of efficient press machine |
| CN112816232A (en) * | 2020-12-31 | 2021-05-18 | 北京中瑞和电气有限公司 | Arc discharge explosion-proof test device in on-load tap-changer oil |
| CN112816232B (en) * | 2020-12-31 | 2022-09-23 | 北京中瑞和电气有限公司 | Arc discharge explosion-proof test device in on-load tap-changer oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |