CN210091845U - Electromagnetic rheostat - Google Patents
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- CN210091845U CN210091845U CN201920861309.8U CN201920861309U CN210091845U CN 210091845 U CN210091845 U CN 210091845U CN 201920861309 U CN201920861309 U CN 201920861309U CN 210091845 U CN210091845 U CN 210091845U
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Abstract
An electromagnetic rheostat belongs to the technical field of electric power, and particularly relates to an electromagnetic rheostat. The utility model provides an electromagnetic rheostat. The utility model comprises an excitation coil 23-1, an armature 23-2, a spring 23-3 and a slide rheostat 23-7, wherein the armature 23-2 is arranged at one side of the excitation coil 23-1, the end of the armature 23-2 far away from the excitation coil 23-1 is connected with one end of the spring 23-3, the other end of the spring 23-3 is connected with a support body, and the excitation coil 23-1 is fixed on the support structure to keep the position fixed; the lower end of the magnet exciting coil 23-1 is provided with a front excitation scribing sheet and a rear excitation scribing sheet along the length direction of the magnet exciting coil 23-1, the upper end of the excitation scribing sheet is electrically connected with the lower end of the magnet exciting coil 23-1, the excitation scribing sheet is connected and linked with the armature 23-2 through an insulating connecting piece 23-5, and the insulating connecting piece is connected with a slide sheet seat of the slide rheostat 23-7.
Description
Technical Field
The utility model belongs to the technical field of electric power, especially, relate to an electromagnetic rheostat.
Background
In railway engineering construction, in order to ensure the normal operation of an electric locomotive, installation of some interval equipment is often involved to ensure driving safety, but a power supply needs to be laid with a power cable of several kilometers or even dozens of kilometers to supply power for the electric locomotive. With the rapid development of power electronic technology, the high-power section equipment in the railway part can be changed into low-power equipment, such as: the interval track signal indicator lamp, the 220V voltage halogen lamp that is adopted at present, can utilize direct current 12V or 24V's LED pilot lamp instead, not only can reduce power, can also guarantee luminous intensity. In practical situations, there are many fixed-position individual devices in an interval, and its low-voltage power supply can not be directly obtained from an adjacent power line, needs to be transmitted through a 220V or 380V power cable, and obtained after voltage transformation and rectification, not only causes waste of materials, but also is affected by the problem of voltage drop, the transmission distance is limited, and to prolong the power supply distance, only the wire section can be increased or the head end voltage can be increased, thereby increasing the economic investment. Therefore, there is a need for a device for obtaining electric energy using an alternating magnetic field, and thus, an electromagnetic rheostat is required to be designed.
Disclosure of Invention
The utility model provides an electromagnetic rheostat to above-mentioned problem.
In order to achieve the purpose, the utility model adopts the following technical scheme that the device comprises an excitation coil 23-1, an armature 23-2, a spring 23-3 and a slide rheostat 23-7, wherein the armature 23-2 is arranged at one side of the excitation coil 23-1, the end of the armature 23-2, which is far away from the excitation coil 23-1, is connected with one end of the spring 23-3, the other end of the spring 23-3 is connected with a support body, and the excitation coil 23-1 is fixed on the support structure to keep the position fixed;
the lower end of the magnet exciting coil 23-1 is provided with a front excitation scribing sheet and a rear excitation scribing sheet along the length direction of the magnet exciting coil 23-1, the upper end of the excitation scribing sheet is electrically connected with the lower end of the magnet exciting coil 23-1, the excitation scribing sheet is connected and linked with the armature 23-2 through an insulating connecting piece 23-5, and the insulating connecting piece is connected with a slide sheet seat of the slide rheostat 23-7.
As an optimal solution, the utility model discloses open-close type mutual-inductor 1's output one end links to each other with preceding excitation scribing, and back excitation scribing links to each other with adjustable resistance R1 one end, slide rheostat's gleitbretter respectively, slide rheostat's coil end links to each other with resistance R2 one end, vary voltage module 17's input one end respectively, the input other end of vary voltage module 17 links to each other with the resistance R2 other end respectively, the adjustable resistance R1 other end, fuse F one end, another termination mutual-inductor 1's of fuse F output other end.
In another preferred embodiment, R2 ═ 20 Ω and R1 ═ 20 Ω in the present invention.
As another preferred scheme, the utility model discloses insulating connecting piece is horizontal L shape connecting piece, and the long limit of L shape connecting piece is the base, and the base rear end is upwards buckled, and the excitation scribing is set up upper end before the base, and the upper end of slide sheet seat of slide rheostat 23-7 links to each other with base rear end lower extreme, and the upper end of buckling links to each other with armature 23-2 lower extreme middle part on going up.
As another preferable scheme, the armature 23-2 of the present invention is disposed in the lateral guide groove.
As another preferred scheme, the transformation module 17 of the present invention adopts a transformer T.
As another preferred scheme, the transformer T of the utility model ratio adopts 1: 1.
As another preferred scheme, the relationship between the primary voltage U1 of the transformation module 17 and the output current I of the transformer 1 is as follows:
wherein R1-adjustable resistance (omega); r2-boost resistance (Ω); r-total resistance of sliding rheostat (omega); i-input current (A); s-solenoid coil cross sectional area (cm)2) (ii) a W-number of field coil turns (n); l-slide rheostat total length (cm); k-spring elastic coefficient; delta-field coil to armature distance (cm).
As another preferred scheme, open-close type mutual-inductor 1's the mouth both sides that open and close are provided with the connecting seat, are provided with the entrance hole on the connecting seat, are provided with crimping wire screw corresponding to the entrance hole on the connecting seat, link to each other through the fastener between the connecting seat of both sides.
As another preferred scheme, the connecting seat of the utility model adopts a metal connecting seat.
As another preferred scheme, the connecting seat of the utility model is an L-shaped connecting seat, the long side of the L-shaped connecting seat is the bottom side, the short side of the L-shaped connecting seat is bent upwards, and the short sides of the L-shaped connecting seats on both sides are arranged oppositely; the wire inlet hole is formed in the end face of the outer side of the bottom edge, the lower end of the compression joint wire screw is screwed into the threaded hole in the upper end of the bottom edge, and the threaded hole is communicated with the wire inlet hole; the short edges of the L-shaped connecting seats on the two sides are connected through bolts.
Secondly, open-close type mutual-inductor 1 includes two arc cross-buckling parts, and two arc cross-buckling part one ends link to each other through folding buckle, and the other end passes through the connecting seat and links to each other, and the side of an arc cross-buckling part is provided with mutual inductance coil binding post.
In addition, the arc part of buckling is folded to the arc part of buckling end, and the ferromagnet of one of them arc part is evaginated, and another arc part is indent.
The utility model has the advantages of.
The utility model discloses preceding excitation scribing and back excitation scribing and armature 23-2 linkage can guarantee that circular excitation coil pound the number certain, guarantee simultaneously that circular excitation coil is certain with the distance of armature, have eliminated the influence of distance coefficient, have the undulant too big function of automatically regulated control output voltage.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
Fig. 1 is a schematic structural diagram of the device for obtaining electric energy by using an alternating magnetic field.
Fig. 2 is a schematic diagram of the overall structure of the device for obtaining electric energy by using the alternating magnetic field.
Fig. 3 is a schematic diagram of the induction coil of the present invention.
Fig. 4 is a schematic diagram of the induction coil structure of the present invention.
Fig. 5 is a schematic diagram of the circuit module of the present invention.
Fig. 6 is a schematic diagram of the electromagnetic rheostat of the present invention.
Figure 7 is a schematic view of the locking adapter of the present invention.
Fig. 8 is a side view of the open-close type mutual inductor 1 of the present invention.
Fig. 9 is a schematic diagram of the pressure control module 16 according to the present invention.
Fig. 10 is a simulation result diagram of the present invention.
In the figure, 1 is an open-close type mutual inductor, 2 is a folding buckle, 3 is a wiring terminal, 4 is a ferromagnetic interface, 5 is a blocking connector (connecting seat), 6 is an output lead, 7 is a conversion circuit, 8 is an output lead, 9 is a storage battery, 10 is a terminal strip, 11 is a box body, 12 is a high-voltage lead, 13 is a ferromagnetic material, 14 is a magnetic induction line, 15 is an acquisition module (open-close type mutual inductor), 16 is a voltage control module, 17 is a voltage transformation module, 18 is a rectification module, 19 is a filtering module, 20 is a voltage stabilizing module, 21 is a voltage dividing module, 22 is a protection module, and 23 is an electromagnetic rheostat.
Detailed Description
As shown in the figure, the utility model discloses electromagnetic rheostat can be applied to and utilize alternating magnetic field to obtain the device of electric energy, utilizes alternating magnetic field to obtain the device of electric energy including open-close type mutual-inductor 1, electric energy conversion circuit 7 and battery 9, and the output port of mutual-inductor 1 links to each other with conversion circuit 7's input port, and conversion circuit 7's output port links to each other with battery 9.
The conversion circuit 7 and the battery 9 are enclosed in a case 11. The box body 11 can be arranged according to specific conditions, is connected with the combined transformer 1 through a wire 6, outputs voltage through the terminal strip 10, can be automatically adjusted (see the following description for adjustment of U1) according to needs, outputs voltages of different grades such as 12V, 24V, 36V and the like, and is suitable for equipment with different rated voltages.
According to the utility model discloses conversion circuit 7 and battery 9's design, the utility model discloses less, easily installation, convenient to use can be done to box 11. Can improve interval equipment power installation efficiency, the work of laying of fungible low tension cable greatly practices thrift construction cost.
The battery 9 is connected to a terminal block 10.
The conversion circuit 7 comprises a voltage control module 16, a voltage transformation module 17, a rectification module 18, a filtering module 19, a voltage stabilization module 20, a voltage division module 21 and a protection module 22, and the mutual inductor 1, the voltage control module 16, the voltage transformation module 17, the rectification module 18, the filtering module 19, the voltage stabilization module 20, the voltage division module 21, the protection module 22 and the storage battery 9 are sequentially connected.
The utility model discloses utilize alternating magnetic field to acquire alternating magnetic field's device utilization to close on alternating current production in contact net or the power line, produce secondary current through mutual inductor, obtain alternating voltage after accuse pressure module 16, obtain the stable alternating voltage of certain limit through the vary voltage module again, pass through rectifier module again, obtain stable DC power supply, pass through filter module again, obtain the DC voltage of needs.
The utility model discloses utilize alternating magnetic field to acquire device open-close type mutual-inductor 1 of electric energy is used for connecting high tension transmission line.
The utility model discloses utilize alternating magnetic field to obtain the device of electric energy and utilize the electromagnetic induction principle of high-power alternating magnetic field and coil to carry out energy storage and output.
The utility model discloses utilize alternating magnetic field to obtain the device of electric energy can utilize and close on alternating current high voltage circuit and acquire low pressure DC power supply, supply low pressure DC equipment to use through the battery.
The transformer transformation ratio of the transformation module can be designed to obtain an ideal output voltage value.
The filtering module can eliminate harmonic waves and ensure the quality of the output rectified voltage.
The voltage control module 16 comprises a fuse F, an adjustable resistor R1, a resistor R2 and an electromagnetic rheostat 23, wherein the electromagnetic rheostat comprises an excitation coil 23-1, an armature 23-2, a spring 23-3 and a slide rheostat 23-7, the armature 23-2 is arranged on one side of the excitation coil 23-1, the end, far away from the excitation coil 23-1, of the armature 23-2 is connected with one end of the spring 23-3, the other end of the spring 23-3 is connected with a support body, and the excitation coil 23-1 is fixed on the support structure and keeps fixed in position;
the lower end of the excitation coil 23-1 is provided with a front excitation scribing sheet and a rear excitation scribing sheet along the length direction of the excitation coil 23-1, the upper end of the excitation scribing sheet is electrically connected with the lower end of the excitation coil 23-1 (the connection mode of the sliding sheet of the slide rheostat and the resistance coil is the same, current is connected into the excitation coil from the front excitation scribing sheet and flows out through the rear excitation scribing sheet after passing through the winding path of the excitation coil between the front excitation scribing sheet and the rear excitation scribing sheet), the excitation scribing sheet is connected and linked with the armature 23-2 through an insulating connecting piece, and the insulating connecting piece is connected with a;
one end of the output end of the mutual inductor 1 is connected with the front excitation scribing sheet, the rear excitation scribing sheet is respectively connected with one end of the adjustable resistor R1 and the sliding sheet of the slide rheostat, the coil end of the slide rheostat is respectively connected with one end of the resistor R2 and one end of the input end of the transformation module 17, the other end of the input end of the transformation module 17 is respectively connected with the other end of the resistor R2, the other end of the adjustable resistor R1 and one end of the fuse F, and the other end of the fuse F is connected with the other.
The resistance values R1 and R2 in different voltage control modules 16 can be selected according to different high-voltage lines, so as to realize the selection of the required voltage value. The power supply of low-voltage equipment on the pole in a long line interval is connected conveniently, laying of low-voltage cables is avoided, and construction cost is greatly saved.
When a current signal of the open-close type mutual inductor 1 is input to the voltage control module, the current signal flows through the adjustable resistor R1, the electromagnetic rheostat resistor and the resistor R2, then the alternating current is converted into alternating voltage, and primary energy conversion is performed. And taking the voltage on two sides of the resistor R2 as the primary voltage of the transformer module.
The electromagnetic rheostat has the function of automatically adjusting and controlling overlarge output voltage fluctuation. Because the input current I has no stability and the fluctuation range is large, the voltage of the boost resistor changes along with the input current I. The electromagnetic automatic rheostat utilizes the main circuit current I as the exciting current of the electromagnet, the length of the exciting coil is enough, the distance between the front exciting scribing and the rear exciting scribing is kept to be certain, the armature is integrated with the sliding rheostat scribing and the exciting scribing, the proportional relation between the electromagnetic force and the current borne by the armature is guaranteed, the influence of the air gap length on the electromagnetic force is eliminated, the tail end of the armature is connected with the spring with the elastic coefficient in the corresponding proportion, and the stretching length distance is within the elastic limit. When the induced current is increased, the resistance of the sliding rheostat is correspondingly increased, the current of the branch circuit where the resistance R2 and the sliding rheostat are located is reduced, and therefore the voltage on the two sides of the resistance R2 is reduced, and the situation that the current cannot be influenced due to overlarge primary current is guaranteed.
The corresponding resistance value can be set according to the current value of the line which is stable in the longest time in one day, and the output effective voltage value is guaranteed to be highest in efficiency. If the current of the high-voltage line is small, a plurality of open-close type mutual inductors 1 can be connected in series to increase the output current value.
The R2 is 20 omega, and the R1 is 20 omega.
The insulating connecting piece is a transverse L-shaped connecting piece, the long edge of the L-shaped connecting piece is a bottom edge, the rear end of the bottom edge is bent upwards, the excitation scribing sheet is arranged at the front upper end of the bottom edge, the upper end of the slider seat of the slide rheostat 23-7 is connected with the rear lower end of the bottom edge, and the upper bent upper end is connected with the middle part of the lower end of the armature 23-2.
The armature 23-2 is disposed within a transverse guide slot (providing support and guidance for the armature).
The transformation module 17 adopts a transformer T.
The transformation ratio of the transformer T is 1:1, and U2 is 16V.
The rectifier module 18 adopts a rectifier bridge.
The rectifier diode VT1-4 of the rectifier bridge adopts a 10A 1010A/1000V type.
The filter module 19 includes an inductor L, a capacitor C1, and a capacitor C2, one end of the capacitor C1 is connected to the positive electrode of the output end of the rectifier module 18 and one end of the inductor L, one end of the capacitor C1 is connected to the negative electrode of the output end of the rectifier module 18, one end of the capacitor C2, and the negative electrode of the input end of the regulator module, and the other end of the capacitor C2 is connected to the other end of the inductor L and the positive electrode of the input end of the regulator module.
16V 100uF volume 5 x 11mm is adopted for the capacitors C1 and C2, and 1.0 line 33uH10A is adopted for the inductor L.
The voltage stabilizing module 20 comprises a resistor R3 and a voltage stabilizing diode Dw, one end of the resistor R3 is connected with the anode of the output end of the filter module 19, the other end of the resistor R3 is connected with the cathode of the voltage stabilizing diode Dw and the anode of the input end of the voltage dividing module respectively, and the anode of the voltage stabilizing diode Dw is connected with the cathode of the output end of the filter module 19 and the cathode of the input end of the voltage dividing module respectively.
The voltage stabilizing module 20 can ensure the stability of the output voltage. When the rectified voltage fluctuates slightly, the current of the voltage stabilizing diode Dw changes greatly, and the voltage change is not large, so that the output voltage value of the voltage dividing module 21 is kept within a certain range through the voltage dividing function of the voltage dividing resistor R4, and the voltage stabilizing effect is achieved.
The zener diode Dw takes IN4744N 15V.
The voltage dividing module 21 comprises a resistor R5 and a resistor R6, one end of the resistor R5 is connected with one end of the resistor R4 and a power supply end of the protection module 22, the resistor R4 is connected with the anode of the output end of the voltage stabilizing module 20 at one end, the other end of the resistor R5 is connected with the input end of the protection module 22 and one end of the resistor R6, and the other end of the resistor R6 is connected with the cathode of the output end of the voltage stabilizing module 20.
The protection module 22 comprises a comparator K, a positive input end of the comparator K is connected with an output end of the voltage division module 21, a negative input end of the comparator K is connected with a positive electrode of the storage battery 9 and one end of a resistor R8 through a resistor R7, the other end of the resistor R8 is connected with a collector electrode of a PNP triode Q1, an emitter electrode of the PNP triode Q1 is connected with a positive electrode of a diode D1 and a power supply end positive electrode of the protection module 22, a negative electrode of a diode D1 is connected with a base electrode of the PNP triode Q1 and an emitter electrode of the PNP triode Q2, a base electrode of the PNP triode Q2 is connected with one end of a resistor R11 and one end of a resistor R12, the other end of a resistor R11 is connected with an output end of the comparator K, the other end of the resistor R12 is connected with a negative electrode of an output end of the voltage stabilizing module 20, one.
A relay coil KM is arranged between the connecting ends of the resistor R12 and the resistor R11, and a controlled switch QF of the relay is connected between the anode of the diode D1 and the anode of the power supply end of the protection module 22. Preventing the battery from being fully charged and overcharged. When the voltage of the battery is lower than 12V, the coil KM is powered on, the normally open switch QF is closed, and the subsequent charging circuit is powered on. When the voltage of the battery is greater than or equal to 12v, the coil loses power, QF is in an off state, the charging circuit loses power, and the battery is not charged.
The protection module 22 can protect the storage battery, realize the functions of full power cut-off and under-voltage charging, and simultaneously prevent the storage battery from being overcharged or reversely fed.
The comparator K adopts an LM393 chip, and the triodes Q1 and Q2 adopt 9012 type triodes.
R7 ═ R6 ═ 100K Ω, R5 ═ 20K Ω, R4 ═ 5K Ω, R3 ═ 8K Ω, R8 ═ 3 Ω, R9 ═ R10 ═ 1K Ω, and R11 ═ R12 ═ 100K Ω.
The charging current of the storage battery is 0.7-1A, the Q1 trigger current is not lower than 7mA, and the trigger voltage is not lower than 0.7V. Q2 trigger current is not less than 0.07mA, and trigger voltage is not less than 0.7V.
The relationship between the primary side voltage U1 of the transformation module 17 and the output current I of the transformer 1 is as follows:
wherein R1-adjustable resistance (omega); r2-boost resistance (Ω); r-total resistance of sliding rheostat (omega); i-input current (A); s-solenoid coil cross sectional area (cm)2) (ii) a W-number of field coil turns (n); l-slide rheostat total length (cm); k-spring elastic coefficient; delta-field coil to armature distance (cm).
The voltage control module 16 processes input alternating current I, outputs alternating voltage after passing through a boosting resistor R2, obtains alternating voltage needing rectification after passing through a transformer coil T, obtains direct voltage after passing through a rectification module 18, and transmits the direct voltage to a voltage stabilizing module 20 after passing through a filtering module 19, the filtering module 19 can eliminate the alternating voltage existing in a filtered circuit, the voltage stabilizing module 20 can ensure that the total voltage of the voltage dividing module 21 is kept unchanged, the voltage dividing module 21 obtains 12V signal voltage by using a voltage taking resistor R6 to serve as a comparison signal of the protection module 22, the comparison signal is compared with the anode voltage of the storage battery 9 through a voltage comparator K, when the anode voltage of the storage battery 9 is lower than 12V, the circuit is charged, when the voltage reaches 12V, the charging is stopped, and the protection circuit ensures that the storage battery cannot be overcharged and reversely discharged. The protection module 22 is connected with the storage battery 9 through the output lead 8, the storage battery 9 is connected with the terminal strip 10, and the terminal strip 10 can provide voltage values of different grades for electric equipment.
Connecting seats are arranged on two sides of an opening and closing opening of the open-close type mutual inductor 1, wire inlet holes are formed in the connecting seats, crimping lead screws are arranged on the connecting seats corresponding to the wire inlet holes, and the connecting seats on the two sides are connected through fasteners. The excitation wires respectively wound on the two semicircular magnetic cores are connected through the connecting seat.
The connecting seat adopts a metal connecting seat. The metal connecting seat and the excitation iron core are insulated and fixed on the outer side insulating material through bolts. The inside insulating parcel structure that also adopts of connecting outside for switching on of connecting seat. The integral excitation device can be subjected to insulation treatment after installation is completed.
The connecting seats are L-shaped connecting seats, the long edges of the L-shaped connecting seats are bottom edges, the short edges of the L-shaped connecting seats are bent upwards, and the short edges of the L-shaped connecting seats on the two sides are arranged oppositely; the wire inlet hole is formed in the end face of the outer side of the bottom edge, the lower end of the compression joint wire screw is screwed into the threaded hole in the upper end of the bottom edge, and the threaded hole is communicated with the wire inlet hole; the short edges of the L-shaped connecting seats on the two sides are connected through bolts.
The open-close type mutual inductor 1 comprises two arc buckling parts, one ends of the two arc buckling parts are connected through a folding buckle, the other ends of the two arc buckling parts are connected through a connecting seat, and a mutual inductor wiring terminal is arranged on the side face of one arc buckling part.
When in use, the mutual inductor 1 is opened and sleeved on the high-voltage lead 12 and fixed by the blocking joint 5, so that the ferromagnetic interface 4 and the fracture of the ferromagnetic material 13 are ensured to be in good contact, and the smooth magnetic circuit is ensured. Since an alternating current is always present in the high-voltage conductor 12, the variable magnetic induction lines 14 are always present in the ferromagnetic material 13, and an induced current is generated in the mutual inductor 1.
The folding buckle end comprises arc buckling parts, wherein the ferromagnet of one arc buckling part protrudes outwards, and the ferromagnet of the other arc buckling part is inwards concave.
U1＝R2×I2
F spring K X
Obtaining:
wherein R1-adjustable resistance (omega); r2-boost resistance (Ω); r-total resistance of sliding rheostat (omega); i-input current (A);
s-solenoid coil cross sectional area (cm)2) (ii) a W-number of field coil turns (n); l-slide rheostat total length (cm);
k-spring elastic coefficient; delta-distance (cm) between magnet exciting coil and armature (armature is fixed with distance between front exciting scribing sheet and back exciting scribing sheet, the coefficient is constant value)
And (3) calculating: s/delta2╳K＝100,W＝1000，R1＝R＝20Ω，R2＝40Ω,L＝0.1m。
To adjust the output of U1: the following method can be used.
The first method is to increase or decrease the number of current-taking mutual inductors.
The second method comprises the following steps: r, R1 and R2 resistances are adjusted.
The third method comprises the following steps: and adjusting the transformation ratio of the transformer T.
The method and the device can be applied to railway lines, and main line voltage regularly fluctuates at different time intervals.
According to the difference of electric equipment, the stable alternating voltage obtained by the voltage control module can be directly transformed into the required alternating voltage, so that the rectification process is saved.
The utility model discloses application prospect is wide, can solve the power problem of attached low pressure protection, control, equipment such as measurement in the circuit interval, simultaneously, still can provide charging source for the mobile device.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (7)
1. An electromagnetic rheostat comprises an excitation coil (23-1), an armature (23-2), a spring (23-3) and a sliding rheostat (23-7), and is characterized in that the armature (23-2) is arranged on one side of the excitation coil (23-1), the end, away from the excitation coil (23-1), of the armature (23-2) is connected with one end of the spring (23-3), the other end of the spring (23-3) is connected with a support body, and the excitation coil (23-1) is fixed on the support structure and keeps fixed in position;
the lower end of the magnet exciting coil (23-1) is provided with a front excitation scribing sheet and a rear excitation scribing sheet along the length direction of the magnet exciting coil (23-1), the upper end of the excitation scribing sheet is electrically connected with the lower end of the magnet exciting coil (23-1), the excitation scribing sheet is connected and linked with the armature iron (23-2) through an insulating connecting piece (23-5), and the insulating connecting piece is connected with a slide sheet seat of the slide rheostat (23-7).
2. An electromagnetic rheostat according to claim 1, characterized in that one end of the output end of the open-close type mutual inductor (1) is connected with the front excitation scribing piece, the rear excitation scribing piece is respectively connected with one end of the adjustable resistor R1 and the sliding piece of the sliding rheostat, the coil end of the sliding rheostat is respectively connected with one end of the resistor R2 and one end of the input end of the transformation module (17), the other end of the input end of the transformation module (17) is respectively connected with the other end of the resistor R2, the other end of the adjustable resistor R1 and one end of the fuse F, and the other end of the fuse F is connected with the other end of.
3. An electromagnetic varistor according to claim 2, wherein R2=20 Ω and R1=20 Ω.
4. The electromagnetic rheostat according to claim 1, characterized in that the insulating connecting piece is a transverse L-shaped connecting piece, the long side of the L-shaped connecting piece is a bottom side, the rear end of the bottom side is bent upwards, the excitation scribing sheet is arranged at the front upper end of the bottom side, the upper end of the slide sheet seat of the slide rheostat (23-7) is connected with the rear lower end of the bottom side, and the upper end of the upper bend is connected with the middle part of the lower end of the armature (23-2).
5. An electromagnetic varistor according to claim 1, characterized in that the armature (23-2) is arranged in a transverse guide groove.
6. An electromagnetic varistor according to claim 2, characterized in that the transformation module (17) uses a transformer T.
7. An electromagnetic rheostat according to claim 6, characterized in that the transformer T transformation ratio is 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920861309.8U CN210091845U (en) | 2019-06-10 | 2019-06-10 | Electromagnetic rheostat |
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| CN201920861309.8U CN210091845U (en) | 2019-06-10 | 2019-06-10 | Electromagnetic rheostat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
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