A circuit for obtaining electric energy

Abstract

A circuit for obtaining electric energy belongs to the field of electric power technology, and in particular, relates to a circuit for obtaining electric energy. The present invention provides a circuit for obtaining electric energy. The present invention comprises a voltage control module 16, a voltage transformation module 17, a rectifier module 18, a filter module 19, a voltage stabilizing module 20, a voltage dividing module 21 and a protection module 22, and its structural key points are that a transformer 1, a voltage control module 16, a voltage transformation module 17, a rectifier module 18, a filter module 19, a voltage stabilizing module 20, a voltage dividing module 21, a protection module 22 and a battery 9 are connected in sequence.

Description

Technical Field

[0001] The invention belongs to the field of electric power technology, and in particular relates to a circuit for obtaining electric energy. Background Art

[0002] In the construction of railway projects, in order to ensure the normal operation of electric locomotives, it is often necessary to install some interval equipment to ensure driving safety, but the introduction of its power supply requires laying several kilometers or even dozens of kilometers of power cables to supply it. With the rapid development of power electronics technology, some high-power interval equipment on the railway can actually be changed to low-power equipment. For example, the interval track signal indicator light, which currently uses 220V voltage halogen lamps, can be changed to use DC 12V or 24V LED indicator lights, which can not only reduce power but also ensure luminous intensity. In actual situations, there are many fixed individual devices in the interval, and their low-voltage power supply cannot be directly obtained from the adjacent power lines. It needs to be transmitted through 220V or 380V power cables and obtained after transformation and rectification, which not only causes waste of materials, but also is affected by the voltage drop problem. The transmission distance is limited. To extend the power supply distance, the only way is to increase the wire cross-section or increase the head end voltage, thereby increasing economic investment. Summary of the invention

[0003] The present invention is aimed at the above-mentioned problem and provides a circuit for obtaining electric energy.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme, which includes a voltage control module 16, a voltage transformation module 17, a rectifier module 18, a filter module 19, a voltage stabilizing module 20, a voltage dividing module 21 and a protection module 22. Its structural key points are that the transformer 1, the voltage control module 16, the voltage transformation module 17, the rectifier module 18, the filter module 19, the voltage stabilizing module 20, the voltage dividing module 21, the protection module 22 and the battery 9 are connected in sequence.

[0005] As another preferred solution, the battery 9 of the present invention is connected to a terminal block 10 .

[0006] As another preferred embodiment, the voltage control module 16 of the present invention includes a fuse F, an adjustable resistor R1, a resistor R2 and an electromagnetic resistor 23, the electromagnetic resistor includes an excitation coil 23-1, an armature 23-2, a spring 23-3 and a sliding resistor 23-7, the armature 23-2 is arranged on one side of the excitation coil 23-1, the end of the armature 23-2 away from the excitation coil 23-1 is connected to one end of the spring 23-3, the other end of the spring 23-3 is connected to the support body, and the excitation coil 23-1 is fixed on the support structure to keep the position fixed;

[0007] A front excitation scribe and a rear excitation scribe are provided at the lower end of the excitation coil 23-1 along the length direction of the excitation coil 23-1, the upper end of the excitation scribe is electrically connected to the lower end of the excitation coil 23-1, the excitation scribe is linked to the armature 23-2 through an insulating connector 23-5, and the insulating connector is connected to the slider seat of the sliding rheostat 23-7;

[0008] One end of the output end of the transformer 1 is connected to the front excitation slice, and the rear excitation slice is respectively connected to one end of the adjustable resistor R1 and the slider of the sliding rheostat. The coil end of the sliding rheostat is respectively connected to one end of the resistor R2 and one end of the input end of the transformer module 17. The other end of the input end of the transformer module 17 is respectively connected to the other end of the resistor R2, the other end of the adjustable resistor R1, and one end of the fuse F. The other end of the fuse F is connected to the other end of the output end of the transformer 1.

[0009] As another preferred solution, in the present invention, R2=20Ω, R1=20Ω.

[0010] As another preferred embodiment, the insulating connector described in the present invention is a transverse L-shaped connector, the long side of the L-shaped connector is the bottom side, the rear end of the bottom side is bent upward, the excitation blade is arranged at the front upper end of the bottom side, the upper end of the slider seat of the sliding rheostat 23-7 is connected to the rear lower end of the bottom side, and the upper bent end is connected to the middle part of the lower end of the armature 23-2.

[0011] As another preferred solution, the armature 23 - 2 of the present invention is arranged in a transverse guide groove.

[0012] As another preferred solution, the transformer T is used as the transformer module 17 of the present invention.

[0013] As another preferred solution, the transformation ratio of the transformer T described in the present invention is 1:1.

[0014] As another preferred solution, the rectifier module 18 of the present invention adopts a rectifier bridge.

[0015] As another preferred solution, the rectifier diode VT1-4 of the rectifier bridge described in the present invention adopts: 10A1010A / 1000V type.

[0016] As another preferred embodiment, the filtering module 19 of the present invention includes an inductor L, a capacitor C1 and a capacitor C2, one end of the capacitor C1 is respectively 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 respectively 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 voltage stabilizing module, and the other end of the capacitor C2 is respectively connected to the other end of the inductor L and the positive electrode of the input end of the voltage stabilizing module.

[0017] As another preferred solution, the capacitors C1 and C2 of the present invention are: 16V 100uF with a volume of 5*11mm, and the inductor L is 1.0 wire 33uH 10A.

[0018] As another preferred scheme, the voltage stabilizing module 20 described in the present invention includes a resistor R3 and a voltage stabilizing diode Dw, one end of the resistor R3 is connected to the positive electrode of the output end of the filter module 19, and the other end of the resistor R3 is respectively connected to the cathode of the voltage stabilizing diode Dw and the positive electrode of the input end of the voltage divider module, and the positive electrode of the voltage stabilizing diode Dw is respectively connected to the negative electrode of the output end of the filter module 19 and the negative electrode of the input end of the voltage divider module.

[0019] As another preferred solution, the voltage stabilizing diode Dw of the present invention adopts IN4744N 15V.

[0020] As another preferred scheme, the voltage divider module 21 described in the present invention includes a resistor R5 and a resistor R6, one end of the resistor R5 is respectively connected to one end of the resistor R4 and the power supply end of the protection module 22, the resistor R4 is also connected to the positive output terminal of the voltage stabilizing module 20, the other end of the resistor R5 is respectively connected to 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 to the negative output terminal of the voltage stabilizing module 20.

[0021] As another preferred embodiment, the protection module 22 of the present invention includes a comparator K, the positive input end of the comparator K is connected to the output end of the voltage divider module 21, the negative input end of the comparator K is respectively connected to the positive electrode of the battery 9 and one end of the resistor R8 through the resistor R7, the other end of the resistor R8 is connected to the collector of the PNP transistor Q1, the emitter of the PNP transistor Q1 is respectively connected to the positive electrode of the diode D1 and the positive electrode of the power supply end of the protection module 22, the negative electrode of the diode D1 is respectively connected to the base of the PNP transistor Q1 and the emitter of the PNP transistor Q2, the base of the PNP transistor Q2 is respectively connected to one end of the resistor R11 and one end of the resistor R12, the other end of the resistor R11 is connected to the output end of the comparator K, the other end of the resistor R12 is respectively connected to the negative electrode of the output end of the voltage stabilizing module 20, one end of the resistor R10, and the negative electrode of the battery, and the other end of the resistor R10 is connected to the collector of the PNP transistor Q2.

[0022] As another preferred solution, a relay coil KM is provided between the connection ends of the resistor R12 and the resistor R11 of the present invention, and the controlled switch QF of the relay is connected between the positive electrode of the diode D1 and the positive electrode of the power supply end of the protection module 22 .

[0023] As another preferred solution, the comparator K of the present invention adopts LM393 chip, and the transistors Q1 and Q2 adopt 9012 transistors.

[0024] Secondly, in the present invention, R7=R6=100KΩ, R5=20KΩ, R4=5KΩ, R3=8KΩ, R8=3Ω, R9=R10=1KΩ, R11=R12=100KΩ.

[0025] In addition, the relationship between the primary voltage U1 of the transformer module 17 and the output current I of the transformer 1 is:

[0026]

[0027] Where: R1-adjustable resistor (Ω); R2-boost resistor (Ω); R-total resistance of sliding rheostat (Ω); I-input current (A); S-cross-sectional area of ​​electromagnetic coil (cm 2 ); W-number of turns of the excitation coil (n); L-total length of the sliding resistor (cm); K-spring elastic coefficient; δ-distance between the excitation coil and the armature (cm).

[0028] The invention has beneficial effects.

[0029] When the present invention is used, the input end of the voltage control module 16 can be connected to the output end of the split-type mutual inductor 1, and the alternating magnetic field generated by the alternating current in the adjacent contact network or power line is used to generate a secondary current through the mutual inductance coil. After passing through the voltage control module 16, an alternating voltage is obtained, and then a stable alternating voltage within a certain range is obtained through a transformer module. After passing through a rectifier module, a stable DC power supply is obtained, and then through a filter module, the required DC voltage is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0031] Figure 1 It is a schematic diagram of the structure of the device for obtaining electric energy by utilizing an alternating magnetic field according to the present invention.

[0032] Figure 2 It is a schematic diagram of the overall structure of the device for obtaining electric energy by utilizing an alternating magnetic field according to the present invention.

[0033] Figure 3 It is a schematic diagram of the principle of the induction coil of the present invention.

[0034] Figure 4 It is a schematic diagram of the structure of the induction coil of the present invention.

[0035] Figure 5 It is a schematic diagram of the circuit module of the present invention.

[0036] Figure 6 It is the principle diagram of the electromagnetic resistor of the present invention.

[0037] Figure 7It is a schematic diagram of a blocking joint of the present invention.

[0038] Figure 8 It is a side view of the split type mutual inductor 1 of the present invention.

[0039] Fig. 9 It is a schematic diagram of the pressure control module 16 of the present invention.

[0040] Fig.10 It is a simulation result diagram of the present invention.

[0041] In the figure, 1 is an open-and-close mutual inductor, 2 is a folding buckle, 3 is a terminal block, 4 is a ferromagnetic interface, 5 is a blocking connector (connection seat), 6 is an output wire, 7 is a conversion circuit, 8 is an output wire, 9 is a battery, 10 is a terminal block, 11 is a box, 12 is a high-voltage wire, 13 is a ferromagnetic material, 14 is a magnetic flux line, 15 is an acquisition module (open-and-close mutual inductor), 16 is a voltage control module, 17 is a voltage transformation module, 18 is a rectifier module, 19 is a filter module, 20 is a voltage stabilizing module, 21 is a voltage divider module, 22 is a protection module, and 23 is an electromagnetic resistor. DETAILED DESCRIPTION

[0042] As shown in the figure, the circuit for obtaining electric energy of the present invention can be applied to a device for obtaining electric energy by utilizing an alternating magnetic field. The device for obtaining electric energy by utilizing an alternating magnetic field includes an open-close transformer 1, an electric energy conversion circuit 7 (i.e., the circuit for obtaining electric energy of the present invention) and a battery 9. The output port of the transformer 1 is connected to the input port of the conversion circuit 7, and the output port of the conversion circuit 7 is connected to the battery 9.

[0043] The conversion circuit 7 and the battery 9 are encapsulated in a box 11. The box 11 can be arranged according to the specific situation, and is connected to the combined transformer 1 by a wire 6. The output voltage is output through the terminal block 10, and can be adjusted according to the needs (please refer to the following description for the adjustment of U1) to output different levels of voltage such as 12V, 24V, 36V, etc., which is suitable for equipment with different rated voltages.

[0044] According to the design of the conversion circuit 7 and the storage battery 9 of the present invention, the box 11 of the present invention can be made smaller, easy to install and convenient to use. It can improve the installation efficiency of the power supply of the interval equipment, replace the low-voltage cable laying work, and greatly save the construction cost.

[0045] The box 11 can be a rainproof protection box (the whole box can be made of stainless steel, sealing strips are installed at the door joints, the wire threading holes are located at the lower side of the box, and the whole has a sloped top cover) to achieve stable operation of electronic devices in different external environments and extend their service life.

[0046] The battery 9 is connected to a terminal block 10 .

[0047] The conversion circuit 7 includes a voltage control module 16, a voltage transformation module 17, a rectifier module 18, a filter module 19, a voltage stabilizing module 20, a voltage dividing module 21 and a protection module 22. The transformer 1, the voltage control module 16, the voltage transformation module 17, the rectifier module 18, the filter module 19, the voltage stabilizing module 20, the voltage dividing module 21, the protection module 22 and the battery 9 are connected in sequence.

[0048] The device for obtaining electric energy by using an alternating magnetic field of the present invention utilizes the alternating magnetic field generated by the alternating current in the adjacent contact network or power line to generate a secondary current through a mutual inductance coil, and obtains an alternating voltage after passing through a voltage control module 16, and then obtains a stable alternating voltage within a certain range through a transformer module, and then obtains a stable DC power supply through a rectifier module, and then obtains the required DC voltage through a filter module.

[0049] The device for obtaining electric energy by using an alternating magnetic field, a split-type transformer 1 of the present invention is used for connecting a high-voltage power transmission line.

[0050] The device for obtaining electric energy by using an alternating magnetic field of the present invention utilizes the electromagnetic induction principle of a high-power alternating magnetic field and a coil to store and output energy.

[0051] The device for obtaining electric energy by using an alternating magnetic field can obtain a low-voltage direct current power source by using an adjacent alternating current high-voltage line, and supply the low-voltage direct current power source to the low-voltage direct current equipment through a storage battery.

[0052] The transformer ratio of the transformer module can be designed to obtain an ideal output voltage value.

[0053] The filter module can eliminate harmonics and ensure the quality of the output rectified voltage.

[0054] The voltage control module 16 includes a fuse F, an adjustable resistor R1, a resistor R2 and an electromagnetic resistor 23, the electromagnetic resistor includes an excitation coil 23-1, an armature 23-2, a spring 23-3 and a sliding resistor 23-7, the armature 23-2 is arranged on one side of the excitation coil 23-1, the end of the armature 23-2 away from the excitation coil 23-1 is connected to one end of the spring 23-3, the other end of the spring 23-3 is connected to the support body, and the excitation coil 23-1 is fixed on the support structure to keep the position fixed;

[0055] The lower end of the excitation coil 23-1 is provided with a front excitation blade and a rear excitation blade along the length direction of the excitation coil 23-1, and the upper end of the excitation blade is electrically connected to the lower end of the excitation coil 23-1 (same as the connection method between the slider and the resistance coil of the sliding rheostat, the current is connected to the excitation coil from the front excitation blade, and flows out through the rear excitation blade after the excitation coil winding path between the front excitation blade and the rear excitation blade), the excitation blade is connected to the armature 23-2 through an insulating connector, and the insulating connector is connected to the slider seat of the sliding rheostat 23-7;

[0056] One end of the output end of the transformer 1 is connected to the front excitation slice, and the rear excitation slice is respectively connected to one end of the adjustable resistor R1 and the slider of the sliding rheostat. The coil end of the sliding rheostat is respectively connected to one end of the resistor R2 and one end of the input end of the transformer module 17. The other end of the input end of the transformer module 17 is respectively connected to the other end of the resistor R2, the other end of the adjustable resistor R1, and one end of the fuse F. The other end of the fuse F is connected to the other end of the output end of the transformer 1.

[0057] The resistor values ​​R1 and R2 in the voltage control module 16 can be selected according to different high-voltage lines to achieve the selection of the required voltage value. It is very convenient to connect the power supply of the low-voltage equipment on the pole in the long line section, avoiding the laying of low-voltage cables and greatly saving construction costs.

[0058] The front excitation slices and the rear excitation slices are linked with the armature 23-2 to ensure a certain number of strikes of the energized excitation coil and a certain distance between the energized excitation coil and the armature, thereby eliminating the influence of the distance coefficient.

[0059] When the current signal of the split transformer 1 is input to the voltage control module, it flows through the adjustable resistor R1, the electromagnetic variable resistor resistor and the resistor R2, and then the alternating current is converted into an alternating voltage, and an energy conversion occurs. The voltage on both sides of the resistor R2 is taken as the primary voltage of the transformer module.

[0060] The electromagnetic rheostat has the function of automatically adjusting and controlling excessive fluctuations in the output voltage. Since the input current I is not stable and has a large fluctuation range, the voltage of the boost resistor will change accordingly. This electromagnetic automatic rheostat uses the main circuit current I as the electromagnet excitation current. The excitation coil is long enough, the front excitation slices and the rear excitation slices are kept at a certain distance, the armature and the sliding rheostat slices and the excitation slices are integrated, ensuring the proportional relationship between the electromagnetic force and the current on the armature, eliminating the influence of the air gap length on the electromagnetic force, and the corresponding proportional elastic coefficient spring is connected to the end of the armature, and the stretching length is within the elastic limit. When the induced current increases, the resistance of the sliding rheostat increases accordingly, and the current of the branch where the resistor R2 and the sliding rheostat are located decreases, so the voltage on both sides of the resistor R2 decreases, thus ensuring that the primary current is too large and will not affect the current.

[0061] The corresponding resistance value can be set according to the longest stable current value of the line in a day to ensure the highest efficiency of the output effective voltage value. If the current of the high-voltage line is small, multiple open-close transformers 1 can be connected in series to increase the output current value.

[0062] The R2=20Ω, R1=20Ω.

[0063] The insulating connector is a transverse L-shaped connector, the long side of the L-shaped connector is the bottom side, the rear end of the bottom side is bent upward, the excitation blade is arranged at the front upper end of the bottom side, the upper end of the slider seat of the sliding resistor 23-7 is connected to the rear lower end of the bottom side, and the upper end of the upper bend is connected to the middle part of the lower end of the armature 23-2.

[0064] The armature 23 - 2 is arranged in a transverse guide groove (providing support and guidance for the armature).

[0065] The transformer module 17 is a transformer T.

[0066] The transformer T has a transformation ratio of 1:1, and U2 is 16V.

[0067] The rectifier module 18 adopts a rectifier bridge.

[0068] The rectifier diodes VT1-4 of the rectifier bridge are of 10A10 10A / 1000V type.

[0069] The filtering module 19 includes an inductor L, a capacitor C1 and a capacitor C2. One end of the capacitor C1 is respectively 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 respectively 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 voltage stabilizing module. The other end of the capacitor C2 is respectively connected to the other end of the inductor L and the positive electrode of the input end of the voltage stabilizing module.

[0070] The capacitors C1 and C2 are 16V 100uF with a volume of 5*11mm, and the inductor L is 1.0 wire 33uH 10A.

[0071] The voltage stabilizing module 20 includes a resistor R3 and a voltage stabilizing diode Dw. One end of the resistor R3 is connected to the positive output terminal of the filter module 19, and the other end of the resistor R3 is respectively connected to the cathode of the voltage stabilizing diode Dw and the positive input terminal of the voltage divider module. The positive electrode of the voltage stabilizing diode Dw is respectively connected to the negative output terminal of the filter module 19 and the negative input terminal of the voltage divider module.

[0072] 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 will change greatly, and the voltage change will not change much. The voltage dividing effect of the voltage dividing resistor R4 can ensure that the output voltage value of the voltage dividing module 21 is kept within a certain range, thereby achieving a voltage stabilizing effect.

[0073] The voltage zener diode Dw is IN4744N 15V.

[0074] The voltage divider module 21 includes a resistor R5 and a resistor R6, one end of the resistor R5 is respectively connected to one end of the resistor R4 and the power supply end of the protection module 22, the resistor R4 is also connected to the positive output terminal of the voltage stabilizing module 20, the other end of the resistor R5 is respectively connected to the input terminal of the protection module 22 and one end of the resistor R6, and the other end of the resistor R6 is connected to the negative output terminal of the voltage stabilizing module 20.

[0075] The protection module 22 includes a comparator K, a positive input end of the comparator K is connected to the output end of the voltage divider module 21, a negative input end of the comparator K is connected to the positive electrode of the battery 9 and one end of the resistor R8 through a resistor R7, the other end of the resistor R8 is connected to the collector of the PNP transistor Q1, the emitter of the PNP transistor Q1 is connected to the positive electrode of the diode D1 and the positive electrode of the power supply end of the protection module 22, the negative electrode of the diode D1 is connected to the base of the PNP transistor Q1 and the emitter of the PNP transistor Q2, the base of the PNP transistor Q2 is connected to one end of the resistor R11 and one end of the resistor R12, the other end of the resistor R11 is connected to the output end of the comparator K, the other end of the resistor R12 is connected to the negative electrode of the output end of the voltage stabilizing module 20, one end of the resistor R10, and the negative electrode of the battery, and the other end of the resistor R10 is connected to the collector of the PNP transistor Q2.

[0076] A relay coil KM is provided between the connection ends of the resistor R12 and the resistor R11, and the controlled switch QF of the relay is connected between the positive electrode of the diode D1 and the positive electrode of the power supply end of the protection module 22. This prevents the battery from being overcharged when fully charged. When the battery voltage is lower than 12V, the coil KM is energized, the normally open switch QF is closed, and the subsequent charging circuit is energized. When the battery voltage is greater than or equal to 12V, the coil loses power, QF is in a disconnected state, the charging circuit loses power, and the battery is not charged.

[0077] The protection module 22 can protect the battery, realize the functions of power off when fully charged and charging when under voltage, and can also prevent the battery from being overcharged or reversely charged.

[0078] The comparator K adopts LM393 chip, and the transistors Q1 and Q2 adopt 9012 transistors.

[0079] The R7=R6=100KΩ, R5=20KΩ, R4=5KΩ, R3=8KΩ, R8=3Ω, R9=R10=1KΩ, R11=R12=100KΩ.

[0080] The battery charging current is 0.7-1A, the Q1 trigger current is not less than 7mA, and the trigger voltage is not less than 0.7V. The Q2 trigger current is not less than 0.07mA, and the trigger voltage is not less than 0.7V.

[0081] The relationship between the primary voltage U1 of the transformer module 17 and the output current I of the transformer 1 is:

[0082]

[0083] Where: R1-adjustable resistor (Ω); R2-boost resistor (Ω); R-total resistance of sliding rheostat (Ω); I-input current (A); S-cross-sectional area of ​​electromagnetic coil (cm 2 ) ; W-number of turns of the excitation coil (n); L-total length of the sliding resistor (cm); K-spring elastic coefficient; δ-distance between the excitation coil and the armature (cm).

[0084] The voltage control module 16 processes the input alternating current I, outputs an alternating voltage after passing through the boost resistor R2, obtains the AC voltage that needs to be rectified after being transformed by the transformer coil T, obtains the DC voltage after passing through the rectifier module 18, and then transmits it to the voltage stabilizing module 20 through the filter module 19. The filter module 19 can eliminate the AC voltage in the line after filtering. The voltage stabilizing module 20 can ensure that the total voltage of the voltage divider module 21 remains unchanged. The voltage divider module 21 uses the voltage resistor R6 to obtain a 12V signal voltage as a comparison signal of the protection module 22, and compares it with the anode voltage of the battery 9 through the voltage comparator K. When the anode voltage of the battery 9 is lower than 12V, the circuit is charged. When the voltage reaches 12V, the charging stops. The protection circuit ensures that the battery will not be overcharged or reversely discharged. The protection module 22 is connected to the battery 9 through the output wire 8, and the battery 9 is connected to the terminal block 10. The terminal block 10 can provide different levels of voltage values ​​for use by electrical equipment.

[0085] The opening and closing port of the split-type transformer 1 is provided with connection seats on both sides, the connection seats are provided with wire entry holes, and the connection seats are provided with wire crimping screws corresponding to the wire entry holes, and the connection seats on both sides are connected by fasteners. The excitation wires respectively wound on the two semicircular magnetic cores are connected through the connection seats.

[0086] The connection base is a metal connection base. The metal connection base is insulated from the excitation core and is fixed to the outer insulating material by bolts. The inside of the connection base is conductive and the outside is also insulated. The overall excitation device can be insulated after installation.

[0087] The connecting seat 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 upward, and the short sides of the L-shaped connecting seats on both sides are arranged opposite to each other; the wire entry hole is arranged on the outer end surface of the bottom side, and the lower end of the crimping wire screw is screwed into the threaded hole at the upper end of the bottom side, and the threaded hole is connected to the wire entry hole; the short sides of the L-shaped connecting seats on both sides are connected by bolts.

[0088] The split-type mutual inductor 1 comprises two arc-shaped interlocking parts, one end of the two arc-shaped interlocking parts are connected by a folding buckle, and the other end is connected by a connecting seat, and a mutual inductance coil connection terminal is arranged on the side of one arc-shaped interlocking part.

[0089] When in use, the mutual inductance coil 1 is opened, sleeved on the high-voltage wire 12, and fixed with the blocking joint 5 to ensure good contact between the ferromagnetic interface 4 and the fracture of the ferromagnetic material 13, and to ensure smooth magnetic circuit. Since there is always an alternating current in the high-voltage wire 12, there are always changing magnetic flux lines 14 in the ferromagnetic material 13, generating an induced current in the mutual inductance coil 1.

[0090] The arc-shaped buckled parts of the folded buckle end have a ferromagnetic body that is convex on one arc-shaped buckled part and a concave on the other arc-shaped buckled part.

[0091] (R variable - sliding rheostat connected to the circuit resistance)

[0092] U1=R2×I2

[0093] (L- total length of sliding rheostat, X- length of access circuit)

[0094]

[0095] F spring = K × X

[0096] get:

[0097]

[0098] Where: R1-adjustable resistor (Ω); R2-boost resistor (Ω); R-total resistance of sliding rheostat (Ω); I-input current (A);

[0099] S- electromagnetic coil cross-sectional area (cm 2 ); W-number of turns of the excitation coil (n); L-total length of the sliding rheostat (cm);

[0100] K-spring elastic coefficient; δ-distance between the excitation coil and the armature (cm) (the distance between the armature and the excitation coil between the front excitation slice and the rear excitation slice is fixed, and this coefficient is a fixed value)

[0101] Calculation: S / δ 2 ╳K=100, W=1000, R1=R=20Ω, R2=40Ω, L=0.1m.

[0102] To adjust the output result of U1: the following method can be used.

[0103] Method 1: Increase or decrease the number of current mutual inductance coils.

[0104] Method 2: Adjust the resistance values ​​of R, R1, and R2.

[0105] Method three: Adjust the transformation ratio of transformer T.

[0106] The present application can be applied to railway lines, where the main line voltage fluctuates regularly at different time periods.

[0107] Depending on the different electrical equipment, the stable alternating voltage obtained by the voltage control module can also be directly transformed into the required alternating voltage, saving the rectification process.

[0108] The present invention has broad application prospects and can solve the power supply problem of auxiliary low-voltage protection, monitoring, measurement and other equipment in the line section. At the same time, it can also provide charging power for mobile devices.

[0109] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A circuit for obtaining electric energy, comprising 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 dividing module (21) and a protection module (22), characterized in that A mutual inductor (1), a voltage control module (16), a voltage transformation module (17), a rectifier module (18), a filter module (19), a voltage stabilization module (20), a voltage dividing module (21), a protection module (22), and a storage battery (9) are connected in sequence; The voltage control module (16) comprises a fuse F, an adjustable resistor R (1), a resistor R (2) and an electromagnetic resistor (23); the electromagnetic resistor comprises an excitation coil (23-1), an armature (23-2), a spring (23-3) and a sliding resistor (23-7); the armature (23-2) is arranged on one side of the excitation coil (23-1); the end of the armature (23-2) away from the excitation coil (23-1) is connected to one end of the spring (23-3); the other end of the spring (23-3) is connected to a support body; the excitation coil (23-1) is fixed on the support structure to keep the position fixed; A front excitation blade and a rear excitation blade are arranged at the lower end of the excitation coil (23-1) along the length direction of the excitation coil (23-1); the upper end of the excitation blade is electrically connected to the lower end of the excitation coil (23-1); the excitation blade is linked to the armature (23-2) via an insulating connector (23-5); and the insulating connector is connected to a sliding blade seat of a sliding rheostat (23-7); One end of the output end of the transformer (1) is connected to the front excitation scribe, the rear excitation scribe is respectively connected to one end of the adjustable resistor R1 and the slider of the sliding rheostat, the coil end of the sliding rheostat is respectively connected to one end of the resistor R2 and one end of the input end of the transformer module (17), the other end of the input end of the transformer module (17) is respectively connected to 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 to the other end of the output end of the transformer (1); The filtering module (19) comprises an inductor L, a capacitor C1 and a capacitor C2; one end of the capacitor C1 is respectively 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 respectively 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 voltage regulator module; the other end of the capacitor C2 is respectively connected to the other end of the inductor L and the positive electrode of the input end of the voltage regulator module.

2. A circuit for obtaining electric energy according to claim 1, characterized in that The voltage stabilizing module (20) comprises a resistor R3 and a voltage stabilizing diode Dw, one end of the resistor R3 is connected to the positive electrode of the output end of the filter module (19), the other end of the resistor R3 is respectively connected to the cathode of the voltage stabilizing diode Dw and the positive electrode of the input end of the voltage divider module, and the positive electrode of the voltage stabilizing diode Dw is respectively connected to the negative electrode of the output end of the filter module (19) and the negative electrode of the input end of the voltage divider module.

3. A circuit for obtaining electric energy according to claim 1, characterized in that The voltage divider module (21) comprises a resistor R5 and a resistor R6, one end of the resistor R5 is respectively connected to one end of the resistor R4 and the power supply end of the protection module (22), the other end of the resistor R4 is connected to the positive output end of the voltage stabilizing module (20), the other end of the resistor R5 is respectively connected to 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 to the negative output end of the voltage stabilizing module (20).

4. A circuit for obtaining electric energy according to claim 1, characterized in that The protection module (22) comprises a comparator K, wherein the positive input end of the comparator K is connected to the output end of the voltage divider module (21), the negative input end of the comparator K is respectively connected to the positive electrode of the battery (9) and one end of the resistor R8 through a resistor R7, the other end of the resistor R8 is connected to the collector of a PNP transistor Q1, the emitter of the PNP transistor Q1 is respectively connected to the positive electrode of a diode D1 and the positive electrode of a power supply end of the protection module (22), the negative electrode of the diode D1 is respectively connected to the base of the PNP transistor Q1 and the emitter of the PNP transistor Q2, the base of the PNP transistor Q2 is respectively connected to one end of a resistor R11 and one end of a resistor R12, the other end of the resistor R11 is connected to the output end of the comparator K, the other end of the resistor R12 is respectively connected to the negative electrode of the output end of the voltage stabilizing module (20), one end of a resistor R10 and the negative electrode of the battery, and the other end of the resistor R10 is connected to the collector of the PNP transistor Q2.

5. A circuit for obtaining electric energy according to claim 4, characterized in that A relay coil KM is provided between the connection ends of the resistor R12 and the resistor R11, and a controlled switch QF of the relay is connected between the positive electrode of the diode D1 and the positive electrode of the power supply end of the protection module (22).

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