CN109931962A - Magnetic inductive non-contact type loaded switch gear readback device - Google Patents
Magnetic inductive non-contact type loaded switch gear readback device Download PDFInfo
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- CN109931962A CN109931962A CN201910261284.2A CN201910261284A CN109931962A CN 109931962 A CN109931962 A CN 109931962A CN 201910261284 A CN201910261284 A CN 201910261284A CN 109931962 A CN109931962 A CN 109931962A
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Abstract
The invention discloses a kind of magnetic inductive non-contact type loaded switch gear readback device, including the spinning disk with loaded switch axis synchronous rotary, the gear readback disk for incuding changes of magnetic field on spinning disk and the signal processing module for providing working power for gear readback disk and transmitting out after being handled the gear signal of readback；The gear readback disk is opposite up and down with spinning disk and is arranged in parallel, and gear readback disk is fixed on the casing of loaded switch；On the spinning disk embedded with it is corresponding with gear positions, be arranged according to binary-coded decimal and increase several kicker magnet groups for laying clockwise with gear, the position that binary-coded decimal power and position correspond on gear readback disk is provided with the Hall sensor for incuding kicker magnet magnetic field.The present invention is stable and reliable in work, accuracy is high, can be realized the loaded switch signal readback of multi gear position, the demand that the fine gear of further satisfaction is adjusted.
Description
Technical field
The present invention relates to electrical equipment technical field, especially a kind of auxiliary device applied on loaded switch.
Background technique
Loaded switch is also known as load ratio bridging switch, refer to it is a kind of be suitble to it is being operated under static exciter or load,
For changing the regulator of transformer winding tap link position, basic principle is exactly to guarantee not interrupt load electric current
In the case of, realize the switching in transformer winding between tap, to change the number of turns of winding, i.e. the voltage ratio of transformer,
The final purpose for realizing pressure regulation.
Currently, vacuum loaded switch ownership is more in the market, product function is similar, and working principle is consistent, is all
Moving contact movement is driven by stepper motor, by the transformation for realizing gear from different static contact connections.When loaded switch
It when gear changes, needs readback to controller, judges whether current gear is suitable by controller, if need to continue
Switching, therefore whether loaded switch gear readback is accurate most important.
The loaded switch gear signal that controller obtains usually carries out shelves by the readback disk being arranged on vacuum loaded switch
The readback of position.Using sliding contact formula structure, this readback is taken inventory to be lacked the readback disk of traditional vacuum loaded switch following
It falls into: 1) in loaded switch long-time use process, being easy to appear contact and fall off, phenomena such as poor contact, to make controller
Read back information mistake or disappearance cause loaded switch failure；2) since the readback disk of slidingtype is mechanical movement, so in the presence of rubbing
It wipes and abrasion, each contact needs to add lubricant, but be easy to generate dust and other impurities for a long time, contact adhesion is caused to hold
It is also easy to produce malfunction；To overcome the problems, such as this, it is necessary to periodically be safeguarded that maintenance workload is big to readback disk；3) it slides
The operating voltage of contact readback disk is alternating current 220V power supply, there is the security risk of electric shock in maintenance process.
To solve the above problems, Chinese patent CN205090923U discloses a kind of load ratio bridging switch gear position sensor,
It is the bracket that carry magnet is provided on the axis of load ratio bridging switch, is provided with even be furnished with above or below corresponding magnet
The wiring board of multiple tongue tubes, the quantity of tongue tube and the numbers of gear steps of load ratio bridging switch are consistent, and magnet leads to central axis
The tongue tube of magnet magnetization different location is crossed, to perceive the gear signal of load ratio bridging switch.Although the patent realizes non-connect
The gear signal readback of touch, but certain limitation is still had, such as: it is influenced, is only suitable for by tongue tube sensitivity
On the loaded switch less applied to numbers of gear steps.However, as adjusting requirement of the power equipment to gear is more and more finer, this
The gear readback mode of kind dry-reed can no longer meet use demand.
Summary of the invention
It connects the technical problem to be solved by the invention is to provide a kind of magnetic inductive stable and reliable in work, that accuracy is high is non-
Touching type loaded switch gear readback device, for realizing the loaded switch signal readback of multi gear position, the fine gear of further satisfaction
The demand of adjusting.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
Magnetic inductive non-contact type loaded switch gear readback device, including the rotation with loaded switch axis synchronous rotary
Disk, the gear readback disk for incuding changes of magnetic field on spinning disk and for gear readback disk provide working power and will return
The signal processing module that the gear signal of reading is transmitted out after being handled；The gear readback disk and spinning disk are opposite up and down
And be arranged in parallel, gear readback disk is fixed on the casing of loaded switch；It is embedded with and gear position on the spinning disk
Set it is corresponding, be arranged according to binary-coded decimal and increase several kicker magnet groups for laying clockwise with gear, it is corresponding on gear readback disk
The position of binary-coded decimal power and position is provided with the Hall sensor in induction kicker magnet magnetic field.
The specific structure of spinning disk is the rotation in above-mentioned magnetic inductive non-contact type loaded switch gear readback device
Turn the ontology of disk and is divided into several sectors according to loaded switch numbers of gear steps for round or cirque structure, spinning disk ontology
Region is located at the same in fan-shaped region corresponding with the gear according to the kicker magnet group of a certain gear of binary-coded decimal setting
On radius；Kicker magnet in same power and position is located on the identical same annulus of radius.
The specific structure of kicker magnet is the strong magnetic in above-mentioned magnetic inductive non-contact type loaded switch gear readback device
Body be N S extreme direction and spinning disk is perpendicular and polarity close to gear readback disk magnetic pole.
Another structure of kicker magnet is in above-mentioned magnetic inductive non-contact type loaded switch gear readback device, is located at same
Kicker magnet on one annulus, adjacent connects into an arc magnet piece.
Above-mentioned magnetic inductive non-contact type loaded switch gear readback device improvement is that the spinning disk passes through fastening
The spacing that part is installed on the shift gear on loaded switch axis, between gear readback disk and spinning disk meets hall sensing
The distance of reaction requirement of device.
Above-mentioned magnetic inductive non-contact type loaded switch gear readback device improvement is that the binary-coded decimal uses
8421BCD code.
The specific structure of gear readback disk described in above-mentioned magnetic inductive non-contact type loaded switch gear readback device is,
Gear signal Acquisition Circuit is provided on the gear readback disk, gear signal Acquisition Circuit includes first terminal row and and Hall
Number of sensors corresponding current-limiting resistance, the current-limiting resistance are serially connected in the positive pole and Hall sensor of first terminal row
Between power positive end, the ground terminal of first terminal row and the ground terminal of Hall sensor are connected.
The improvement of gear readback disk described in above-mentioned magnetic inductive non-contact type loaded switch gear readback device is, institute
It states and is additionally provided with monitoring Hall sensor working condition in gear signal Acquisition Circuit and shows luminous the two of current gear information
Pole pipe, light emitting diode are serially connected between the signal end of first terminal row and the signal output end of Hall sensor.
The specific structure of signal processing module described in above-mentioned magnetic inductive non-contact type loaded switch gear readback device
For the signal processing module includes the circuit board for being welded with power-switching circuit and signal resolution circuit, is welded on circuit board
Have and the Second terminal row of first terminal row on gear readback disk is connected by signal wire and by signal wire and peripheral control unit
The third terminal of connection is arranged；The power end of the input terminal connection third terminal row of the power-switching circuit, is used for alternating current
Output is to Second terminal row and signal resolution circuit after being rectified into direct current and being depressured；The input terminal of the signal resolution circuit connects
The gear signal end of Second terminal row is connect, the signal output end of the output end connection third terminal row of signal resolution circuit is used for
Peripheral control unit will be transferred to through third terminal row after the gear signal amplification of gear readback disk transmission.
Due to using above technical scheme, the invention technological progress is as follows.
The present invention is applied in loaded switch, on the basis of realizing the acquisition of non-contact type gear signal, is set using binary-coded decimal
The cooperation of the kicker magnet group and Hall sensor set, realize the signal readback of multi gear position loaded switch, further satisfaction essence
The demand that thin gear is adjusted；Also, Hall sensor high sensitivity has stronger anti-external magnetic field interference performance, therefore can
The accurate induction for realizing kicker magnet magnetic field, so that the accurate reliability of signal readback be effectively ensured.In addition, signal in the present invention
Readback disk is worked using 24V direct current, provides reliable guarantee for safety of the maintenance operating personnel in maintenance process.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the structural schematic diagram of spinning disk described in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of spinning disk described in the embodiment of the present invention 2；
Fig. 4 is the circuit diagram of gear readback disk of the present invention；
Fig. 5 is the circuit diagram of signal processing module of the present invention；
Fig. 6 is mounting structure schematic diagram of the present invention on loaded switch.
Wherein: 1. pedestals, 2. axis, 3. casings, 4. shift gears, 5. spinning disks, 6. gear readback disks, at 7. signals
Manage module, 8. light emitting diodes, 9. fasteners.
Specific embodiment
The main structure of loaded switch is as shown in fig. 6, include the casing of pedestal 1 and the side of being fixed on the base in the present invention
3, motor is provided in pedestal 1, the output shaft of motor connects axis 2 by shaft coupling, and being connected by key driving on axis has
The shift gear 4 of load switch moving contact movement.
Magnetic inductive non-contact type loaded switch gear readback device proposed by the present invention is mounted on the casing of loaded switch
Top specifically includes spinning disk 5, gear readback disk 6 and signal processing module 7, the electric connecting relation between each component
As shown in Figure 1.Specifically: spinning disk 5 is with 2 synchronous rotary of loaded switch axis, namely follows the variation of loaded switch gear
And change, several kicker magnets are embedded on spinning disk 5, the laying of kicker magnet is corresponding with gear positions, the setting of kicker magnet
According to binary-coded decimal rule setting；Gear readback disk 6 is opposite with about 5 spinning disk and is arranged in parallel, and is fixed on loaded switch
On casing, the position that binary-coded decimal power and position is corresponded on gear readback disk 6 is provided with Hall sensor, for incuding magnetic on spinning disk
The variation of field, to know the variation of gear；Signal processing module 7 is used to provide working power for gear readback disk and by readback
Gear signal handled after be transferred to external controller.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
Embodiment 1
A kind of magnetic inductive non-contact type loaded switch gear readback device, including spinning disk 5, gear readback disk 6 and letter
Number processing module 7.Wherein, spinning disk 5 is installed on the shift gear 4 on loaded switch axis by fastener 9, fastener
9 use bolt and nut component；Gear readback disk 6 is located at the surface of spinning disk 5.
In the present embodiment, spinning disk 5 is set as cirque structure, after spinning disk is coaxially socketed on axis, passes through
Bolt and nut component is fixed on the upper surface of shift gear；Gear readback disk 6 is fixed on the top sides edge of casing；Signal processing
Module 7 is arranged outside casing, as shown in Figure 6.Certainly, the signal processing module in the present invention also can be set in gear readback disk
In upper or casing.
The structure of spinning disk is as shown in Fig. 2, include spinning disk ontology, spinning disk ontology uses epoxy resin board system
Make, above-mentioned kicker magnet is inlaid on spinning disk ontology.In the present embodiment, kicker magnet uses magnetic pole, the N of magnetic pole S it is extremely square
To perpendicular with spinning disk, and polarity incudes close to gear readback disk convenient for gear readback disk.
In the present embodiment, the numbers of gear steps of loaded switch is 25 grades, therefore spinning disk ontology is according to loaded switch gear number
Equal part is measured for 25 fan-shaped regions, the angle of each fan-shaped region is 14.4 °.According to binary-coded decimal setting a certain gear it is strong
Magnet group is located on the same radius in fan-shaped region corresponding with the gear, and corresponding 1-25 grades of the strong magnetic of each gear
Body group is increased with gear to be arranged on spinning disk ontology according to clockwise, as shown in Figure 2.
In the present invention, binary-coded decimal uses 8421BCD code, the kicker magnets of 25 gears according to 8421BCD code provided with 16,8,4,
2,1 corresponding five power and positions have been placed equidistant with five annulus on totally five power and positions namely spinning disk ontology, strong in same power and position
Magnet is located on the identical same annulus of radius, and the kicker magnet combination of corresponding each gear is laid in annulus and scallop along radius
Junction, as shown in Figure 2.Such as: 1 grade of 8421BCD code is 00001, and corresponding kicker magnet quantity is 1, which sets
It sets in penetralia annulus with corresponding 1 grade of scallop along the junction of radius；16 grades of 8421BCD code is 10000, corresponding strong magnetic
Body quantity is also 1, but most external annulus is arranged in corresponding 16 grades of scallops along the junction of radius in the kicker magnet；25 grades
8421BCD code is 11001, and corresponding kicker magnet quantity is 3, be separately positioned on the first annulus from inside to outside, the 4th annulus and
5th annulus is with corresponding 25 grades of scallops along the junction of radius.
Gear signal Acquisition Circuit is provided on gear readback disk, the circuit diagram of gear signal Acquisition Circuit such as Fig. 4 is tidied up,
Including first terminal row DZJ1,44e and five current-limiting resistance of five Hall sensors (U16, U8, U4, U2, U1) (RD16,
RD8, RD4, RD2, RD1).Wherein, current-limiting resistance is serially connected in the positive pole and Hall sensor positive pole of first terminal row
Between end, the ground terminal of first terminal row and the ground terminal of Hall sensor are connected.
Five Hall sensors respectively correspond five power and positions on spinning disk, and are located at annulus and radius on spinning disk
The surface of interface point is arranged.To guarantee that Hall sensor can accurately sense kicker magnet, in the present invention, gear readback disk with
Spacing between spinning disk must satisfy the distance of reaction requirement of Hall sensor, be usually arranged as 2-5mm.
The present invention is to monitor the working condition of Hall sensor, and show the current gear information of loaded switch, gear letter
Light emitting diode (D16, D8, D4, D2, D1) is also provided in number Acquisition Circuit.Light emitting diode is serially connected in first terminal row's
Between signal end and the signal output end of Hall sensor.
The main body of signal processing module is circuit board, and power-switching circuit, signal resolution circuit, the are welded on circuit board
Two-terminal arranges DZJ2 and third terminal arranges DZJ3, and Second terminal arranges DZJ2 and passes through first on signal wire connection gear readback disk
Terminal block, third terminal row DZJ3 are connect by signal wire with peripheral control unit.
The power end of the input terminal connection third terminal row of the power-switching circuit, for dropping 220V AC rectification
Pressure is output after 24V direct current to Second terminal row and signal resolution circuit；Physical circuit figure is as shown in Figure 5.Power supply conversion electricity
Road includes rectifier ZQ1 and second level reduction voltage circuit；The power end of the input terminal connection third terminal row of rectifier ZQ1, rectification
The input terminal of the output end connection second level reduction voltage circuit of device ZQ1, for being direct current by AC rectification；Second level reduction voltage circuit
Output end connects the power end of Second terminal row, for high direct current to be converted to 24V direct current electricity output.
The gear signal end of the input terminal connection Second terminal row of the signal resolution circuit, the output of signal resolution circuit
The signal output end of end connection third terminal row is arranged after the gear signal amplification for transmitting gear readback disk through third terminal
It is transferred to peripheral control unit；Its circuit diagram is as shown in Figure 5.In the present embodiment, corresponding five Hall sensors of signal resolution circuit
Setting five branches arranged side by side altogether, the signal resolution circuit of the Hall sensor of corresponding first power and position include the pressure stabilizing being connected in series
Pipe WD1 and triode QC1；Wherein, the anode of voltage-stabiliser tube WD1 is connect with the first power and position signal end of Second terminal row, is passed through simultaneously
The output end of resistance R1 connection power-switching circuit；The base stage of the cathode connecting triode QC1 of voltage-stabiliser tube WD1, triode QC1's
Collector is connect with the first power and position signal end that third terminal is arranged.Five triode common emitters in five branches, and connect electricity
Source.
When working in the present invention, motor rotation drives axis and shift gear thereon and spinning disk to rotate simultaneously,
When reaching a certain gear, the Hall sensor on gear readback disk can incude the kicker magnet in each power and position, obtain magnetic field with this
Signal；Output is to external controller after the signal of gear readback disk acquisition is transferred to signal resolution processing of circuit, and controller is just
It can accurately learn the current gear of loaded switch.
Embodiment 2
The present embodiment is only that from the difference of embodiment 1: the form of kicker magnet is different on spinning disk.In the present embodiment, rotation
On the same annulus of disk, adjacent kicker magnet connect into an arc magnet piece, as shown in figure 3, facilitating the installation of kicker magnet, together
When also improve fastness of the kicker magnet on spinning disk.
Claims (9)
1. magnetic inductive non-contact type loaded switch gear readback device, it is characterised in that: including same with loaded switch axis (2)
Walk rotation spinning disk (5), the gear readback disk (6) for incuding changes of magnetic field on spinning disk and be gear readback disk
The signal processing module (7) that working power is provided and transmits out after being handled the gear signal of readback；The gear returns
Disk-read (6) is opposite up and down with spinning disk (5) and is arranged in parallel, and gear readback disk (6) is fixed at the casing of loaded switch
On；On the spinning disk (5) embedded with it is corresponding with gear positions, be arranged according to binary-coded decimal and increase cloth clockwise with gear
If several kicker magnet groups, the position that binary-coded decimal power and position is corresponded on gear readback disk (6) is provided with the Hall in induction kicker magnet magnetic field
Sensor.
2. magnetic inductive non-contact type loaded switch gear readback device according to claim 1, it is characterised in that: described
The ontology of spinning disk (5) is round or cirque structure, if spinning disk ontology is divided into according to loaded switch numbers of gear steps
Dry fan-shaped region is located in fan-shaped region corresponding with the gear according to the kicker magnet group of a certain gear of binary-coded decimal setting
On same radius；Kicker magnet in same power and position is located on the identical same annulus of radius.
3. magnetic inductive non-contact type loaded switch gear readback device according to claim 2, it is characterised in that: described
Kicker magnet be N S extreme direction and spinning disk is perpendicular and polarity close to gear readback disk magnetic pole.
4. magnetic inductive non-contact type loaded switch gear readback device according to claim 2, it is characterised in that: be located at
Kicker magnet on same annulus, adjacent connects into an arc magnet piece.
5. according to the described in any item magnetic inductive non-contact type loaded switch gear readback devices of claim 2 to 4, feature
Be: the spinning disk is installed on the shift gear on loaded switch axis (4) by fastener (9), gear readback disk
Spacing between spinning disk meets the distance of reaction requirement of Hall sensor.
6. magnetic inductive non-contact type loaded switch gear readback device according to claim 1, it is characterised in that: described
Binary-coded decimal use 8421BCD code.
7. magnetic inductive non-contact type loaded switch gear readback device according to claim 1, it is characterised in that: described
Gear signal Acquisition Circuit is provided on gear readback disk, gear signal Acquisition Circuit includes first terminal row and and hall sensing
The corresponding current-limiting resistance of device quantity, the current-limiting resistance are serially connected in the positive pole of first terminal row and the power supply of Hall sensor
Between positive terminal, the ground terminal of first terminal row and the ground terminal of Hall sensor are connected.
8. magnetic inductive non-contact type loaded switch gear readback device according to claim 7, it is characterised in that: described
It is additionally provided with monitoring Hall sensor working condition in gear signal Acquisition Circuit and shows the light-emitting diodes of current gear information
Pipe, light emitting diode are serially connected between the signal end of first terminal row and the signal output end of Hall sensor.
9. magnetic inductive non-contact type loaded switch gear readback device according to claim 7, it is characterised in that: described
Signal processing module includes the circuit board for being welded with power-switching circuit and signal resolution circuit, is welded on circuit board and passes through letter
On number line connection gear readback disk the Second terminal row of first terminal row and connect by signal wire with peripheral control unit the
Three terminal blocks；The power end of the input terminal connection third terminal row of the power-switching circuit, for being straight by AC rectification
Output is to Second terminal row and signal resolution circuit after galvanic electricity and decompression；The input terminal of the signal resolution circuit connects second end
The gear signal end of son row, the signal output end of the output end connection third terminal row of signal resolution circuit, for returning gear
Peripheral control unit is transferred to through third terminal row after the gear signal amplification of disk-read transmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910261284.2A CN109931962B (en) | 2019-04-02 | 2019-04-02 | Magnetic induction type non-contact on-load switch gear position readback device |
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| CN201910261284.2A CN109931962B (en) | 2019-04-02 | 2019-04-02 | Magnetic induction type non-contact on-load switch gear position readback device |
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| CN109931962B CN109931962B (en) | 2024-01-26 |
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