CN208521808U - Permanent magnet vacuum on-load tap changer - Google Patents
Permanent magnet vacuum on-load tap changer Download PDFInfo
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- CN208521808U CN208521808U CN201820636426.XU CN201820636426U CN208521808U CN 208521808 U CN208521808 U CN 208521808U CN 201820636426 U CN201820636426 U CN 201820636426U CN 208521808 U CN208521808 U CN 208521808U
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Abstract
The utility model relates to permanent magnet vacuum on-load tap changer, including discriminating gear and circuit switching mechanism, multiple fixed contacts and the first matched moving contact are provided on the discriminating gear；The circuit switching mechanism includes permanent magnet mechanism, switching switch, vacuum tube and transition resistance；The discriminating gear and circuit switching mechanism are arranged in parallel, it is characterized by: the switching switch includes shaft, switching contact mechanism and lever mechanism, the permanent magnet mechanism drives shaft rotation, the shaft activation lever formula mechanism closure disconnects vacuum tube, and shaft drives switching contact mechanism kinematic.Rational deployment, Miniaturization Design are used in the utility model design process, further reduces product outline size, save more spaces for design of transformer.
Description
Technical field
The utility model relates to a kind of tap switch more particularly to a kind of permanent magnet vacuum on-load tap changers.
Background technique
The load ratio bridging switch used in power supply department is mostly using core structure, and shape is cylinder, it is by exhausted
Edge cylinder, main shaft, mounting bracket, conducting ring, moving contact and static contact composition, its static contact are distributed on the inner wall of insulating cylinder,
Due to certain length that needs of static contact, and suitable gap must be kept between adjacent static contact, prevent from leaking electricity
Or arc through, therefore the diameter of insulating cylinder inner wall and perimeter directly determine the maximum gear that the tap switch can be arranged
Number.The more tap switch of gear number, required insulating cylinder diameter is bigger, and the volume of switch is also bigger.And it is corresponding interior
The moving contact rack and contact bracket in portion must also increase accordingly, and weight increases.
Chinese patent application (title are as follows: linear permanent magnet vacuum load ratio bridging switch, publication No.: CN107039195A) is public
A kind of linear permanent magnet vacuum load ratio bridging switch, including switching switch and selection switch two parts composition, the selection are opened
Switch the movement mechanism of the motive contact module formed including stepper motor, screw rod, screw pair, by moving contact and multiple groups static contact group
At discriminating gear；The static contact of the selection switch is divided into odd number group and even numbers group；The switching switch includes permanent magnetism
Mechanism and switching module, quickly change main road connection by the electromagnetic coil being arranged in switching module or secondary road is connected, and cut
Two groups of vacuum tubes are provided on mold changing block, main vacuum tube is wherein provided on main road, pair routes main vacuum tube and transition resistance string
Connection composition, discriminating gear and switching mechanism are arranged in parallel.The device handoff procedure is complicated, and component reliability is poor, and body
Product reduces also very limited.
Summary of the invention
In order to solve the above technical problems, the purpose of the utility model is to provide it is a kind of it is small in size, switching resistance is small, fortune
Row stablizes and permanent magnet vacuum on-load tap changer with long service life.
To achieve the goals above, the utility model uses technical solution below:
Permanent magnet vacuum on-load tap changer, including discriminating gear and circuit switching mechanism, the gear selection
Multiple fixed contacts and the first matched moving contact are provided in mechanism；The circuit switching mechanism includes permanent magnet mechanism, cuts
Change switch, vacuum tube and transition resistance；The discriminating gear and circuit switching mechanism are arranged in parallel, it is characterised in that: institute
Stating switching switch includes shaft, switching contact mechanism and lever mechanism, and the permanent magnet mechanism drives shaft rotation, the shaft
Activation lever formula mechanism closure disconnects vacuum tube, and shaft drives switching contact mechanism kinematic.
As a preferred solution: the shaft is equipped with three groups of cams, every group of cam includes first cam and the second cam, the
One cam and the angled setting of the second cam, first cam and the second cam are respectively arranged below with lever mechanism, lever
Mechanism includes the lever being arranged on lever support and the pull rod for being fixed on lever one end, the other end and first of the lever
The lifting of cam perhaps second cam contact first cam and the second cam two pull rods of driven is true to disconnect or be closed
Blank pipe.
As a preferred solution: the switching contact mechanism includes that three groups of switching moving contacts being arranged in shaft and three groups are cut
Static contact is changed, every group of switching moving contact includes the second moving contact and arc moving contact, and every group of switching static contact includes in a triangle
Three switching static contacts of arrangement, the arc moving contact are contacted with switching static contact always, and second moving contact is at two
It is contacted in turn between switching static contact.
As a preferred solution: the permanent magnet mechanism is equipped with driving lever, one end of the shaft is equipped with shift fork, and driving lever, which pushes, to be dialled
The rotation of fork and then drive shaft.
As a preferred solution: the discriminating gear includes the decelerating motor for driving screw rod rotation, screw rod sliding block, fixation
It the first fixed contact on the second insulating bar, the second fixed contact being fixed on third insulating bar and is fixed on gear pull rod
The first moving contact, the screw rod sliding block drives the sliding of gear pull rod, completes gear switch.
As a preferred solution: being equipped with idler wheel on the inside of the second insulating bar and third insulating bar, also set between two idler wheels
There is pillar, two gear pull rods are located at the two sides up and down of pillar, and two gear pull rods are fixed by plastic support.
As a preferred solution: being additionally provided with gear contact on the screw rod, gear contact is connect with the first moving contact, and gear
Contact is moved synchronously with screw slider, and the gear pull rod is connect by gear driving lever with screw slider.
It is fixed with first always in the first moving contact motion process as a preferred solution: the first fixed contact strip plate shape
Contact, the second fixed contact is at L-shaped, and side and the third insulating bar of the second fixed contact are fixed, and the other side extends internally and the
The contact of one moving contact, multiple second fixed contacts are arranged alternatively up and down on third insulating bar, in the first moving contact motion process
Multiple second fixed contact switchings.
As a preferred solution: further including fixed plate and the first side seal board and second side for being vertically fixed on fixed board ends
Sealing plate, the decelerating motor, screw rod, switching contact mechanism and lever mechanism are each attached to dead plate upper end face, and under screw rod
The fixed plate of side is equipped with the long stripes through hole passed through for gear driving lever；Second insulating bar and third insulating bar are located at fixed plate
Lower section, the both ends of the second insulating bar are fixed with the first side seal board and the second side seal board respectively, the both ends of third insulating bar respectively with
First side seal board and the second side seal board are fixed.
As a preferred solution: the shaft is located at the top of fixed plate, and one end of shaft and it is fixed on the first side seal board
On first bearing seat connection, the other end of the shaft connect with the second bearing seat being fixed on the second side seal board；Vacuum
Pipe and transition resistance it is fixed in the first insulating bar, the first insulating bar is located at the lower section of fixed plate, and the both ends of the first insulating bar
It is fixed respectively with the first side seal board and the second side seal board by mounting plate；The permanent magnet mechanism is fixed on by permanent magnetism mounting plate
On two side seal boards.
The utility model is combined loaded tap-changer, is divided into selected section and switching part, and selected section, which uses, to be subtracted
Speed motor cooperates screw rod, screw rod sliding block, and selection moving contact is driven to carry out gear selection.Using gear contact signal to gear selection
Carry out accurate and effective positioning.Switching part drives shaft to carry out rotary type switching using bistable-state permanent magnet mechanism, makes entirely to switch
Mechanism resistance is smaller, guarantees switching action reliably in place.In addition, vacuum tube actuating mechanism uses lever mechanism, guaranteeing very
Impact of the switching action to vacuum tube can be effectively reduced while blank pipe reliable in action.
The utility model is the vacuum of a brand-new design, permanent magnetism oil immersed type on-load tap changer, can using maturation
The double vacuum list resistance switching circuits leaned on are completed switch position using decelerating motor and are selected, and complete circuit by permanent magnet mechanism and cut
It changes.Rational deployment, Miniaturization Design are used in the utility model design process, further reduces product outline size, to become
Transformer design saves more spaces.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment 1.
Fig. 2 is the overall structure diagram of the utility model embodiment 2.
Fig. 3 is the structural schematic diagram at another visual angle of the utility model.
Fig. 4 is the configuration schematic diagram of the utility model embodiment 1.
Fig. 5 is the partial structure diagram of the discriminating gear of the utility model.
Fig. 6 is the switching contact of the utility model and the structural schematic diagram of vacuum tube actuating mechanism.
Fig. 7 is the circuit theory schematic diagram of the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
Embodiment 1
As Fig. 1, Fig. 3 to permanent magnet vacuum on-load tap changer shown in fig. 6, including discriminating gear and circuit are cut
It changes planes structure, multiple fixed contacts and the first matched moving contact 34 is provided on the discriminating gear；The circuit is cut
Structure of changing planes includes permanent magnet mechanism 12, switching switch, vacuum tube 19 and transition resistance 18；The discriminating gear and circuit switching
Mechanism is arranged in parallel, it is characterised in that: switching switch includes shaft 5, switching contact mechanism and lever mechanism, it is described forever
Magnetic mechanism 12 drives shaft 5 to rotate, 5 activation lever formula mechanism of the shaft closure or disconnection vacuum tube 19, and shaft 5 drives
Switching contact mechanism kinematic.
The shaft 5 is equipped with three groups of cams, and every group of cam includes the first cam 3 and the second cam 4,3 He of the first cam
The angled setting of second cam 4, the first cam 3 and the second cam 4 are respectively arranged below with lever mechanism, lever mechanism packet
Include the lever 21 being arranged on lever support 22 and be fixed on the pull rod 20 of 21 one end of lever, the other end of the lever 21 with
First cam 3 or the contact of the second cam 4, the liftings of 4 two pull rods 20 of driven of the first cam 3 and the second cam disconnect
Or closure vacuum tube.
The switching contact mechanism includes three groups of switching moving contacts being arranged in shaft 5 and three groups of switching static contacts 26,
Every group of switching moving contact includes the second moving contact 28 and arc moving contact 38, and every group of switching static contact 26 includes arranging in a triangle
Three switching static contacts 26, the arc moving contact 38 always with switching static contact 26 contact, second moving contact 28 exists
It is contacted in turn between two switching static contacts 26.
The utility model further includes the first conversion contact bracket 24 and the second conversion contact bracket 25, the first conversion contact branch
A switching static contact 26 is fixed by contact pin 27 on frame 24, passes through two contact pins on the second conversion contact bracket 25
27 fix two switching static contacts 26 respectively.
The permanent magnet mechanism 12 is equipped with driving lever 11, and one end of the shaft 5 is equipped with shift fork 14, and driving lever 11 pushes shift fork 14
And then the rotation of drive shaft 5.
The discriminating gear includes the decelerating motor 6 for driving screw rod 9 to rotate, screw rod sliding block 8, is fixed on the second insulation
It the first fixed contact 29 on bar 33, the second fixed contact 36 being fixed on third insulating bar 35 and is fixed on gear pull rod 31
The first moving contact 34, the screw rod sliding block 8 drives gear pull rod 31 to slide, completes gear switch.
The inside of second insulating bar 33 and third insulating bar 35 is equipped with idler wheel 30, is additionally provided with pillar between two idler wheels 30
32, two gear pull rods 31 are located at the two sides up and down of pillar 32, and two gear pull rods 31 are fixed by plastic support 37.
Gear contact 7 is additionally provided on the screw rod 9, gear contact 7 is connect with the first moving contact 34, and gear contact 7 with
Screw slider 8 moves synchronously, and the gear pull rod 31 is connect by gear driving lever 23 with screw slider 8.
First fixed contact, 29 strip plate shape connects always with the first fixed contact 29 in 34 motion process of the first moving contact
Touching, the second fixed contact 36 is at L-shaped, and the side of the second fixed contact 36 and third insulating bar 35 are fixed, and the other side extends internally and the
The contact of one moving contact 34, multiple second fixed contacts 36 are arranged alternatively up and down on third insulating bar 35, the movement of the first moving contact 34
Switch in the process in multiple second fixed contacts 36.
The utility model further includes fixed plate 39 and the first side seal board 1 and second for being vertically fixed on 39 both ends of fixed plate
Side seal board 15, the decelerating motor 6, screw rod 9, switching contact mechanism and lever mechanism are each attached to 39 upper surface of fixed plate,
And the fixed plate 39 of 9 lower section of screw rod is equipped with the long stripes through hole passed through for gear driving lever 23；Second insulating bar 33 and third
Insulating bar 35 is located at 39 lower section of fixed plate, and the both ends of the second insulating bar 33 are solid with the first side seal board 1 and the second side seal board 15 respectively
Fixed, the both ends of third insulating bar 35 are fixed with the first side seal board 1 and the second side seal board 15 respectively.
The shaft 5 is located at the top of fixed plate 39, and one end of shaft 5 be fixed on the first side seal board 1 first
Bearing block 2 connects, and the other end of the shaft 5 is connect with the second bearing seat 10 being fixed on the second side seal board 15；Vacuum tube
19 and transition resistance 18 it is fixed in the first insulating bar 17, the first insulating bar 17 is located at the lower section of fixed plate 39, and first insulate
The both ends of bar 17 are fixed with the first side seal board 1 and the second side seal board 15 respectively by mounting plate 16；The permanent magnet mechanism 12 passes through
Permanent magnetism mounting plate 13 is fixed on the second side seal board 15.
Embodiment 2
The present embodiment the difference from embodiment 1 is that: as shown in Fig. 2, the permanent magnet mechanism 12 be equipped with rack gear 111, institute
The one end for stating shaft 5 is equipped with gear 114, and rack gear 111 is engaged with gear 114, and pushes the rotation of gear 114 in turn by rack gear 111
The rotation of drive shaft 5.
As shown in fig. 7, decelerating motor is first started after receiving pressure regulation instruction, passes through screw rod, screw rod by the utility model
Sliding block drives the first moving contact to carry out gear selection, and after selecting gear, motor stops, then the movement of return signal instruction permanent magnetism,
Shaft rotation is made by first cam and the second cam, and a vacuum tube switches to closed state by off-state, another
Vacuum tube switches to off-state by closed state, and arc moving contact 38 connects with switching static contact 26 always in shaft rotation process
Touching, second moving contact 28 are contacted by contacting to be switched to a switching static contact 26 with another switching static contact 26；When
When the switching of second moving contact 28 is completed, two vacuum tubes restore initial closed state or off-state.Permanent magnetism acts at this time
Terminate, return signal, pressure regulation instruction is completed.
It should be pointed out that above embodiments are only the representative examples of the utility model.The utility model can also there are many
Deformation.All essence any simple modification, equivalent change and modification to the above embodiments according to the utility model,
It is considered as belonging to the protection scope of the utility model.
Claims (10)
1. permanent magnet vacuum on-load tap changer, including discriminating gear and circuit switching mechanism, the gear selection machine
Multiple fixed contacts and matched the first moving contact (34) are provided on structure；The circuit switching mechanism includes permanent magnet mechanism
(12), switching switch, vacuum tube (19) and transition resistance (18)；The discriminating gear is parallel with circuit switching mechanism to be set
It sets, it is characterised in that: the switching switch includes shaft (5), switching contact mechanism and lever mechanism, the permanent magnet mechanism
(12) shaft (5) rotation, shaft (5) the activation lever formula mechanism closure or disconnection vacuum tube (19), and shaft (5) are driven
Drive switching contact mechanism kinematic.
2. permanent magnet vacuum on-load tap changer according to claim 1, it is characterised in that: set on the shaft (5)
There are three groups of cams, every group of cam includes the first cam (3) and the second cam (4), the first cam (3) and the second cam (4) angulation
Degree setting, the first cam (3) and the second cam (4) are respectively arranged below with lever mechanism, and lever mechanism includes that setting exists
Lever (21) on lever support (22) and the pull rod (20) for being fixed on lever (21) one end, the other end of the lever (21)
It is contacted with the first cam (3) or the second cam (4), two pull rods (20) of the first cam (3) and the second cam (4) driven
Lifting disconnect or be closed vacuum tube.
3. permanent magnet vacuum on-load tap changer according to claim 1, it is characterised in that: the switching contact mechanism
Including switching moving contact of three groups of settings on shaft (5) and three groups of switching static contacts (26), every group of switching moving contact includes the
Two moving contacts (28) and arc moving contact (38), every group of switching static contact (26) include the three switching stationary contacts arranged in a triangle
Head (26), the arc moving contact (38) contact with switching static contact (26) always, and second moving contact (28) is cut at two
It changes between static contact (26) and contacts in turn.
4. permanent magnet vacuum on-load tap changer according to claim 1, it is characterised in that: the permanent magnet mechanism (12)
It is equipped with driving lever (11), one end of the shaft (5) is equipped with shift fork (14), and driving lever (11) pushes shift fork (14) and then drive shaft
(5) rotation.
5. permanent magnet vacuum on-load tap changer according to claim 1, it is characterised in that: the discriminating gear
Decelerating motor (6), the screw rod sliding block (8), the first fixed touching being fixed on the second insulating bar (33) rotated including driving screw rod (9)
It head (29), the second fixed contact (36) being fixed on third insulating bar (35) and is fixed on gear pull rod (31) first dynamic
Contact (34), the screw rod sliding block (8) drive gear pull rod (31) sliding, complete gear switch.
6. permanent magnet vacuum on-load tap changer according to claim 5, it is characterised in that: the second insulating bar (33) with
It is equipped on the inside of third insulating bar (35) idler wheel (30), is additionally provided with pillar (32) between two idler wheels (30), two gears are drawn
Bar (31) is located at the two sides up and down of pillar (32), and two gear pull rods (31) are fixed by plastic support (37).
7. permanent magnet vacuum on-load tap changer according to claim 5, it is characterised in that: on the screw rod (9) also
Equipped with gear contact (7), gear contact (7) is connect with the first moving contact (34), and gear contact (7) and screw rod sliding block (8) are same
Step movement, the gear pull rod (31) are connect by gear driving lever (23) with screw rod sliding block (8).
8. permanent magnet vacuum on-load tap changer according to claim 5, it is characterised in that: the first fixed contact (29) at
Strip plate shape contacts always with the first fixed contact (29) in the first moving contact (34) motion process, and the second fixed contact (36) is at L
Shape, the side and third insulating bar (35) of the second fixed contact (36) are fixed, and the other side extends internally to be connect with the first moving contact (34)
Touching, multiple second fixed contacts (36) are arranged alternatively up and down on third insulating bar (35), in the first moving contact (34) motion process
Switch in multiple second fixed contacts (36).
9. permanent magnet vacuum on-load tap changer according to claim 8, it is characterised in that: further include fixed plate (39)
And it is vertically fixed on first side seal board (1) and the second side seal board (15) at fixed plate (39) both ends, the decelerating motor (6),
Screw rod (9), switching contact mechanism and lever mechanism are each attached to fixed plate (39) upper surface, and the fixation below screw rod (9)
Plate (39) is equipped with the long stripes through hole passed through for gear driving lever (23)；Second insulating bar (33) and third insulating bar (35) position
Below fixed plate (39), the both ends of the second insulating bar (33) are fixed with the first side seal board (1) and the second side seal board (15) respectively,
The both ends of third insulating bar (35) are fixed with the first side seal board (1) and the second side seal board (15) respectively.
10. permanent magnet vacuum on-load tap changer according to claim 9, it is characterised in that: the shaft (5) is located at
The top of fixed plate (39), and one end of shaft (5) is connect with the first bearing seat (2) being fixed on the first side seal board (1), institute
The other end for stating shaft (5) is connect with the second bearing seat (10) being fixed on the second side seal board (15)；Vacuum tube (19) and mistake
Cross resistance (18) it is fixed in the first insulating bar (17), the first insulating bar (17) is located at the lower section of fixed plate (39), and first is exhausted
The both ends of edge bar (17) are fixed with the first side seal board (1) and the second side seal board (15) respectively by mounting plate (16)；The permanent magnetism
Mechanism (12) is fixed on the second side seal board (15) by permanent magnetism mounting plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636426.XU CN208521808U (en) | 2018-04-28 | 2018-04-28 | Permanent magnet vacuum on-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636426.XU CN208521808U (en) | 2018-04-28 | 2018-04-28 | Permanent magnet vacuum on-load tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208521808U true CN208521808U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820636426.XU Active CN208521808U (en) | 2018-04-28 | 2018-04-28 | Permanent magnet vacuum on-load tap changer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376621A (en) * | 2018-04-28 | 2018-08-07 | 浙江腾龙电器有限公司 | Permanent magnet vacuum on-load tap changer |
-
2018
- 2018-04-28 CN CN201820636426.XU patent/CN208521808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376621A (en) * | 2018-04-28 | 2018-08-07 | 浙江腾龙电器有限公司 | Permanent magnet vacuum on-load tap changer |
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