A multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation

Abstract

The present invention discloses a multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation, which relates to the technical field of electric power transmission and distribution, and includes a transformer part and a voltage regulating component. The high-voltage switch and the low-voltage switch are electrically connected to different parts of the transformer part respectively, and the voltage regulating component part is arranged on the inner side of the transformer part. Multiple groups of low-voltage windings are arranged around the outside of the high-voltage winding, and an excitation coil connected in parallel with the power-consuming end is arranged. The excitation coil senses the change of the current at the power-consuming end and amplifies it into the change of the magnetic field around the excitation coil. The carry distance of the carry rod is adjusted by the magnetic field, and then the carry distance of the carry rod is linked to the power grounding. The windings of different wire groups are connected to the power-consuming end circuit through the power grounding. The high-voltage current of the power grid is converted into a suitable low-voltage current for use and input into the power-consuming end through the mutual inductance between the high-voltage winding and the low-voltage winding, so as to achieve the purpose of automatically adjusting the multi-level low-voltage power output of the equipment according to the corresponding electrical appliances connected to the power-consuming end.

Description

Technical Field

[0001] The invention relates to a preinstalled transformer substation, in particular to a multi-winding automatic voltage regulating type high-voltage and low-voltage preinstalled transformer substation. Background Art

[0002] A box-type substation is a device that integrates high-voltage switchgear, distribution transformers and low-voltage power distribution. With the increase in electrical appliances, residents have different requirements for electricity voltage. The voltage required by each electrical appliance is not the same, and generally speaking, there are restrictions on the current and voltage allowed to pass through the appliance. Low voltage cannot drive the equipment, and current exceeding the rated voltage will cause damage to the equipment.

[0003] However, existing prefabricated substations usually adopt a fixed and single transformer structure, which has a limited voltage regulation range and is difficult to adapt to today's increasingly complex electricity usage needs; in addition, the winding design of existing prefabricated substations is relatively simple and cannot achieve automatic switching and adjustment of multiple voltage levels, which limits its scope of application.

[0004] Therefore, it is necessary to improve the existing prefabricated substations. Technical personnel in this field have proposed a multi-winding automatic voltage-regulating high-voltage / low-voltage prefabricated substation. The substation has a multi-winding structure and can realize automatic switching of multiple voltage levels. It is used to meet the needs of cities, transportation, industrial and mining enterprises, residential areas and other places for rapid response, reliable operation, and easy maintenance of the distribution system. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation, in which the high voltage of the power grid is connected to the high-voltage winding through a high-voltage switch, and then connected out through a plurality of low-voltage windings surrounding the high-voltage line group, so as to realize the distribution of high-voltage to low-voltage. In addition, an excitation coil associated with the current at the power consumption end is provided, and the power connection ground is driven to rotate a certain angle through the change of the current at the power consumption end to connect the corresponding low-voltage winding, so as to realize the current that automatically adjusts and outputs the corresponding voltage in coordination with the use needs of the power consumption end.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation, including a box, a busbar part, a high-voltage switch and a low-voltage switch. The box is used for the installation and support of electrical accessories, and the electrical accessories are connected through the busbar part. The high-voltage switch and the low-voltage switch respectively control and protect the high-voltage power input and the low-voltage power output. The high-voltage switch is connected to the high-voltage power of the power grid, and after the equipment is converted, the low-voltage power adapted for use is input to the power consumption end through the low-voltage switch.

[0007] The transformer part is arranged inside the box, and the transformer part includes a high-voltage winding and a low-voltage winding. The high-voltage winding is connected to the high-voltage electricity of the power grid, and multiple low-voltage windings are coaxially arranged on the outside of the high-voltage winding. The low-voltage winding outputs low-voltage power distribution, and converts the high-voltage electricity of the power grid into low-voltage electricity input for use through the mutual inductance of alternating current.

[0008] A voltage regulating component, wherein the voltage regulating component is partially arranged in the middle of multiple low-voltage windings. The voltage regulating component adjusts and outputs a voltage adapted to the power consumption end according to the current change at the power consumption end. The power of the electrical appliances connected to the circuit at the power consumption end is different. After being connected to the power consumption end circuit, the overall resistance of the circuit changes, thereby reducing the current. The voltage regulating component automatically adjusts and outputs a voltage adapted to the power consumption end according to the change of the current at the power consumption end, thereby avoiding the problem of insufficient power of high-power electrical appliances driven by low-voltage electricity.

[0009] The voltage regulating component includes a grounding iron, which is coaxially rotatable with the high-voltage winding. The grounding iron coaxially rotatable with the high-voltage winding connects low-voltage windings of different windings to the input circuit by rotating at different angles.

[0010] A traction wire group is fixedly connected to the side of the electrical grounding iron, and a carry rod is wound around the traction wire group. The carry rod is carried and connected to the inner wall of the box through a spring, and an excitation coil is fixedly provided on the inner wall of the box corresponding to the carry rod.

[0011] The excitation coil is connected in series with the power-consuming end, amplifying the current change at the power-consuming end and manifesting it as a change in the magnetic field around the excitation coil. The carry rod overcomes the spring force and carries different lengths under the action of the magnetic field of different intensities of the excitation coil. The carry rod amplifies the carry distance of the carry rod through the traction wire group, and pulls the power-connected ground to rotate different angles to connect the low-voltage winding of the corresponding winding to the input circuit.

[0012] A turntable is rotatably arranged above the advance rod, a limit pin is arranged on the side spring of the low-voltage winding, and the turntable is drivingly connected with the limit pin.

[0013] The rotation adjustment of the power grounding is carried out synchronously. During the advancement process of the advancement rod, the turntable is driven to rotate. The rotating turntable is linked to drive the limit pin to advance, which is adapted to the rotation and advancement of the power grounding, so that the power grounding can smoothly connect the next low-voltage winding to the power-consuming circuit through the previous low-voltage winding.

[0014] Preferably, the number of windings of the high-voltage winding and the multiple low-voltage windings are set according to a certain ratio, the high-voltage switch is connected in series with the high-voltage winding, the high-voltage winding has the least number of windings, and the high-voltage electricity connected to the high-voltage winding forms a corresponding low-voltage current in the low-voltage winding connected to the closed circuit through mutual inductance and is input to the power consumption end.

[0015] The power grounding iron is arranged to rotate coaxially with the high-voltage winding, and the multiple low-voltage windings are connected in parallel and arranged around the outside of the high-voltage winding, so that the low-voltage windings with different windings can be connected to the power-consuming end circuit through the rotation of the power grounding iron. At the same time, it is also convenient for the multiple low-voltage windings to generate corresponding low-voltage currents through mutual inductance with the high-voltage windings and input them to the power-consuming end.

[0016] Preferably, the inner wall of the box is fixedly connected with a slide rail corresponding to the excitation coil, and the carry rod is slidably arranged on the inner side of the slide rail. One end of the carry rod extending into the inner side of the slide rail is fixedly connected with a first spring. The carry rod is positioned at a certain position in the slide rail by the first spring, and the carry rod is pulled by the magnetic field generated by the excitation coil to overcome the pulling force of the first spring and carry in the direction close to the excitation coil. The magnetic field strength generated by the excitation coil is different according to the current at the power end, and the attraction force on the carry rod is correspondingly different, so that the carry rod carries different distances according to the change of the current at the power end.

[0017] Preferably, a slider is also slidably provided on the inner side of the slide rail, and the end of the first spring away from the advance rod is fixedly connected to the slider. The side wall of the slide rail away from the excitation coil is penetrated and a tightening bolt is provided on the bearing, and the tightening bolt penetrates the slider and is threadedly connected thereto. The tightening bolt is rotated to make the slider slide through the threaded connection with the slider, and the installation position of the slider in the slide rail is adjusted, thereby realizing the adjustment of the tension of the advance rod by the first spring, calibrating the pulling accuracy of the advance rod to the electrical ground, and realizing the corresponding change of the low-voltage winding connected to the power-using end circuit according to the change of the current at the power-using end.

[0018] Preferably, the inner wall bearing of the box body is provided with a rotating shaft, and the power-connecting ground is hingedly arranged on the side of the rotating shaft. The angle of the power-connecting ground is adjusted synchronously with the rotation of the rotating shaft, and a second spring is insulated between the power-connecting ground and the side wall of the rotating shaft. Under the action of the second spring, the power-connecting ground will be pressed and limited with the low-voltage winding after contacting it. After the pressing force exceeds a certain limit, the power-connecting ground overcomes the force of the second spring and deflects to bypass the low-voltage winding and connect the next low-voltage winding. The pressing action of the second spring on the power-connecting ground is related to the voltage requirement of the power-consuming end.

[0019] Preferably, the traction line group includes a first cable, one end of which is fixedly connected to the inner wall of the box, a winding wheel is fixedly provided on the side of the electrical grounding installation shaft, and winding pulleys are provided on the side of the advance rod and the inner wall of the box. The first cable is connected to the advance rod through the winding pulley and then extends to the side of the winding wheel for fixation.

[0020] When the advance rod moves, the first cable wound around the advance rod enlarges the advance distance through the winding pulley and pulls the rotating shaft fixed to the other end of the first cable. The rotating shaft carries the power grounding iron on the side and rotates a certain angle together. The corresponding low-voltage winding is connected to the power-using end circuit through the power grounding iron to form a closed loop.

[0021] Preferably, a mounting shaft is fixedly connected to the inner wall of the box body, and the turntable is rotatably arranged above the advance rod through the mounting shaft. Both the advance rod and the side of the turntable are fixed with protrusions, and the advance rod and the turntable are transmitted by the engagement of the protrusions. When the advance rod advances, the advance rod engages with the protrusions on the side to drive the turntable to rotate, and the turntable drives the limit pin connected to it through rotation, thereby controlling the low-voltage winding where the limit pin is located, and limiting the position in cooperation with the rotation of the power ground.

[0022] Preferably, a stopper is hingedly provided on the side of the low-voltage winding to adapt to the electric ground, and the low-voltage winding is pressed against the electric ground through the hinged stopper and is electrically connected thereto.

[0023] A U-shaped block is fixedly provided on the side of the low-voltage winding near the block, and the limit pin is slidably set on the side of the low-voltage winding through the U-shaped block. A clamping spring is provided between the end of the limit pin away from the block and the side wall of the low-voltage winding. Under the clamping action of the clamping spring, the limit pin extends and exceeds the hinged position of the block, and presses against the hinged block to prevent the block from deflecting, so that the block can press against the power grounding to prevent it from resetting, and maintain the state where the power grounding is connected to the low-voltage winding. As the advance rod changes, the limit pin will release the clamping limit on the block only when the advance rod advances beyond this range.

[0024] Preferably, a limit block is fixedly arranged on the side of the low-voltage winding corresponding to the stop block, and a clamping spring is also arranged between the stop block and the low-voltage winding. Under the action of the limit block, the stop block will not rotate in the opposite direction, and can only deflect at a fixed angle under the clamping action of the clamping spring.

[0025] Preferably, a reset coil spring is provided between the side surface of the electrical grounding installation shaft and the box body, so that the shaft can automatically reset after losing the pulling effect of the first cable.

[0026] A wire row is fixedly arranged on the side of the turntable, and a second cable is wound around the side of the wire row. A plurality of the second cables are extended to the end of the limit pins on different sides of the low-voltage winding with different lengths for traction connection. The advance rod drives the turntable to rotate. The rotation of the turntable winds the second cable around the wire row, and the limit pin connected to the limit pin is pulled by the second cable to cooperate with the rotation of the power ground to limit and release the block.

[0027] The present invention discloses a multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation, which has the following beneficial effects:

[0028] 1. The multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation has multiple groups of low-voltage windings arranged around the outside of the high-voltage winding, and an excitation coil connected in parallel with the power end. The excitation coil senses the change in the current at the power end and amplifies it into a change in the magnetic field around the excitation coil. The carry distance of the carry rod is adjusted by the magnetic field, and then the carry distance of the carry rod is linked to the grounding. The windings of different wire groups are connected to the power end circuit through the grounding. The high-voltage current of the power grid is converted into a suitable low-voltage current for use and input into the power end through the mutual inductance between the high-voltage winding and the low-voltage winding, so as to achieve the purpose of automatically adjusting the multi-level low-voltage power output of the equipment according to the corresponding electrical appliances connected to the power end.

[0029] 2. The multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation has a transformer part which is divided into a high-voltage winding and a low-voltage winding with winding coils in a certain ratio. The high-voltage winding is connected to the high-voltage electricity of the external power grid through a high-voltage switch, and a current of corresponding voltage is generated in the surrounding low-voltage winding connected to the power consumption end through mutual inductance and output to the power consumption end. Multiple low-voltage windings are arranged in an arc shape at equal intervals on the outside of the high-voltage winding, and a rotating and adjustable power connection grounding iron is coaxially arranged on the high-voltage winding. The power connection grounding iron is associated with the power of the electrical appliance connected to the power consumption end, and the low-voltage winding connected to the circuit is automatically converted according to the current at the power consumption end, so that the application range of the equipment is larger and the use is more convenient.

[0030] 3. The multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation has an excitation coil connected to the power-consuming circuit in the box. The power-consuming circuit is connected to electrical appliances of different powers. The total resistance of the circuit changes, and the current passing through the circuit changes accordingly. The change in current changes the magnetic field strength around the excitation coil, and then the excitation coil controls the position of the carry rod through the magnetic field. Different carry distances of the carry rod are associated with the control of the rotation angle of the power connection grounding iron through the traction line group. Different rotation angles of the power connection grounding iron switch the low-voltage winding connected to the power-consuming circuit, thereby achieving the effect of automatically switching the output voltage according to the power consumption needs of the power consumption end.

[0031] 4. In the multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation, the power ground is hingedly arranged on the side of the rotating shaft through a first spring, and the side of the low-voltage winding is also hingedly connected to a block corresponding to the power ground. In order to avoid resetting of the power ground at the moment of circuit disconnection, a limit pin is arranged on the side of the low-voltage winding, which is synchronized with the rotation of the power ground. The limit pin automatically withdraws from the limit position in conjunction with the rotation of the power ground, and at the moment of power failure, the limit pin pops out to limit the deflection of the block, thereby ensuring normal power supply of the equipment at this gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of the installation of components inside the box of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the transformer part and the voltage regulating component of the present invention;

[0035] Figure 3 This is a schematic diagram of the installation and tightening structure of the carry rod of the present invention;

[0036] Figure 4 This is a schematic diagram of the connection state of the power ground and the low voltage winding of the present invention;

[0037] Figure 5 It is a schematic diagram of the traction structure of the traction line group to the advance rod of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the carry rod cooperating with the low-voltage winding drive of the present invention;

[0039] Figure 7 Schematic diagram of the associated limit structure of the low voltage winding power terminal of the present invention

[0040] In the figure: 1. high-voltage switch; 2. low-voltage switch; 3. transformer part; 301. high-voltage winding; 302. low-voltage winding; 4. voltage regulating assembly; 401. power connection and grounding; 402. traction line group; 4021. first cable; 4022. winding wheel; 4023. winding pulley; 403. advance rod; 404. excitation coil; 405. turntable; 406. limit pin; 5. slide rail; 6. first spring; 7. slider; 8. tightening bolt; 9. rotating shaft; 10. second spring; 11. bump; 12. stop block; 13. U-shaped block; 14. limit block; 15. coil spring; 16. wire row; 17. second cable. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The embodiment of the present invention discloses a multi-winding automatic voltage regulating type high-voltage and low-voltage pre-installed substation;

[0043] According to the attached Figure 1 As shown, it includes a high-voltage switch 1, a low-voltage switch 2, a transformer part 3 and a voltage regulating component 4. The high-voltage switch 1 and the low-voltage switch 2 are electrically connected to different parts of the transformer part 3 respectively. High-voltage current is connected from the external power grid, and is converted into a low-voltage current suitable for use by the power end through the voltage regulating component 4 and output. The high-voltage switch 1 and the low-voltage switch 2 respectively control and protect the high-voltage power input and the low-voltage power output. The voltage regulating component 4 is partially arranged on the inner side of the transformer part 3, and the output voltage of the transformer part 3 is automatically and adaptively adjusted through the voltage regulating component 4.

[0044] According to the attached Figure 2 As shown, the transformer part 3 includes a high-voltage winding 301 and a low-voltage winding 302. The high-voltage winding 301 and the low-voltage winding 302 are mutual inductance coils with a certain ratio of coil windings. A plurality of low-voltage windings 302 are arranged in an arc shape and equidistantly on the outside of the high-voltage winding 301. Through the mutual inductance effect between the high-voltage winding 301 and the low-voltage winding 302, the high-voltage current passing through the high-voltage winding 301 is converted into a low-voltage current suitable for use by the power consumption end and output to the power consumption end.

[0045] The high-voltage winding 301 is connected in series with the high-voltage switch 1 and is connected to the high-voltage current of the external power grid. The plurality of low-voltage windings 302 are connected in series to the circuit at the power consumption end.

[0046] The voltage regulating component 4 includes a grounding iron 401, which is coaxially rotatable with the high-voltage winding 301 and arranged inside the box. By rotating the grounding iron 401 at different angles, different low-voltage windings 302 are connected to the power-consuming end circuit, thereby providing a suitable mutual inductance current to the power-consuming end through the low-voltage winding 302.

[0047] The side of the power grounding 401 is connected to the traction line group 402, and is associated with a carry rod 403 through the traction line group 402. An excitation coil 404 is fixedly provided in the carry direction of the carry rod 403. The excitation coil 404 is connected to the power-using end circuit. When electrical appliances of different powers are connected to the power-using end circuit, the current passing therethrough will change accordingly under the action of the resistance of the electrical appliances. The change is amplified by the excitation coil 404 and fed back as a change in the magnetic field strength around the excitation coil 404.

[0048] The change of magnetic field intensity around the excitation coil 404 is reflected as different sizes of attractive force on the carry rod 403, which causes the carry rod 403 to carry in different degrees in the direction of the excitation coil 404. The carry of the carry rod 403 at different distances is associated and fed back through the traction line group 402 as different angles of rotation of the power grounding iron 401. The two interact with each other. When the magnetic field intensity around the excitation coil 404 is within a certain range, the gravitational force on the carry rod 403 is fed back as a traction force on the power grounding iron 401, thereby realizing the automatic adjustment of the low-voltage winding 302 of the power grounding iron 401 connected to the circuit in response to the power change of the electrical appliance connected to the power user end, and inputting current into the power user end circuit with a voltage more suitable for the power user end.

[0049] According to the attached Figure 3 As shown, a slide rail 5 is fixedly provided on the inner wall of the box, one end of the carry rod 403 and the excitation coil 404 extend into the inner side of the slide rail 5 and are slidably connected to the slide rail 5, and a first spring 6 is fixedly provided on the end of the carry rod 403 extending into the slide rail 5, and the first spring 6 provides tension to the carry rod 403 to resist the attraction of the excitation coil 404.

[0050] The end of the first spring 6 away from the advance rod 403 is connected to a slider 7, the slider 7 slides and advances on the inner side of the slide rail 5, and a tightening bolt 8 penetrating the slider 7 is arranged at the end of the slide rail 5 away from the excitation coil 404, the tightening bolt 8 is connected to the bearing of the slide rail 5, and is threadedly connected to the slider 7. The movement of the slider 7 along the slide rail 5 is controlled by rotating the tightening bolt 8, thereby changing the tensioning force of the first spring 6 on the advance rod 403, so as to realize the precise adjustment of the rotation angle of the advance rod 403 to the electric ground 401.

[0051] According to the attached Figure 4 As shown, a rotating shaft 9 is arranged in the box body for coaxial rotation with the high-voltage winding 301, a power-connecting ground 401 is hingedly arranged on the side of the rotating shaft 9, and a second spring 10 is arranged between the power-connecting ground 401 and the rotating shaft 9. The second spring 10 applies a clamping force to the power-connecting ground 401 to ensure the tight connection state between the power-connecting ground 401 and the low-voltage winding 302. At the same time, when the traction force of the traction line group 402 exceeds a certain range, the power-connecting ground 401 overcomes the elastic force of the second spring 10 and deflects. The power-connecting ground 401 deflected at a certain angle bypasses the low-voltage winding 302 at this position and enters the range of connection with the next low-voltage winding 302.

[0052] According to the attached Figure 5As shown, the traction line group 402 includes a first cable 4021 fixedly connected to the inner wall of the box body, a winding wheel 4022 is arranged on the side of the rotating shaft 9 for installing the power grounding iron 401, and a winding pulley 4023 is arranged on the side of the advancing rod 403. The first cable 4021 is wound around the advancing rod 403 by the action of the winding pulley 4023 and then extends to the side of the winding wheel 4022 for fixing. When the advancing rod 403 advances, the first cable 4021 generates a pulling effect on the winding wheel 4022, and the pulling effect is reacted as a rotational torque of the rotating shaft 9 through the winding wheel 4022. The rotational torque acts on the power grounding iron 401, and is reacted as the power grounding iron 401 is in tight contact with the low-voltage winding 302.

[0053] According to the attached Figure 6-7 As shown, a turntable 405 is rotatably arranged above the carry rod 403 , and a protrusion 11 is fixedly arranged on the side where the carry rod 403 contacts the turntable 405 . The carry rod 403 drives the turntable 405 to rotate through the meshing action of the protrusion 11 , and the rotating turntable 405 is associated with the control of the low-voltage winding 302 .

[0054] A stopper 12 is hingedly provided on the side of the low-voltage winding 302 corresponding to the power grounding iron 401. The power grounding iron 401 connects the low-voltage winding 302 to the power-consuming circuit by tightly contacting with the stopper 12. A U-shaped block 13 is fixedly provided on the side of the low-voltage winding 302 and located at the hinged position of the stopper 12, and a limit pin 406 is slidably provided through the U-shaped block 13. A clamping spring is provided at one end of the limit pin 406 away from the stopper 12 to tighten it, so that the limit pin 406 extends to one side of the stopper 12 to limit the rotation of the hinged stopper 12.

[0055] A limit block 14 extending from the hinged position of the block 12 is also provided on the side of the low-voltage winding 302. The limit block 14 applies a limiting effect to the block 12 to prevent the hinged block 12 from rotating excessively. A coil spring 15 is provided between the side of the rotating shaft 9 on which the power grounding iron 401 is installed and the inner wall of the box body. The coil spring 15 makes the power grounding iron 401 have a rotation tendency opposite to the rotation direction, so as to balance the excessive pulling effect of the traction line group 402 on the power grounding iron 401.

[0056] A wire row 16 is arranged on the side of the turntable 405, and a second cable 17 is wound by the wire row 16. The second cable 17 extends away from one end of the wire row 16 to the end of the limit pin 406 to be fixed thereto, and is synchronously driven by the advance rod 403 to drive the power connection grounding iron 401 to rotate. The turntable 405 is driven to rotate by the advance rod 403, and the rotating wire row 16 reels the second cable 17. The limit pin 406 is pulled back by the rewound second cable 17, and the block 12 loses its limiting effect, so that the power connection grounding iron 401 passes through the previous block 12 to enter the position connected with the next low-voltage winding 302. Multiple second cables 17 are respectively connected to the limit pins 406 on the sides of multiple groups of low-voltage windings 302 with different extension lengths, so as to cooperate with the power connection grounding iron 401 to be tightly connected with different low-voltage windings 302.

[0057] The multi-winding automatic voltage-regulating high-voltage and low-voltage pre-installed substation has multiple groups of low-voltage windings 302 arranged around the outside of the high-voltage winding 301, and an excitation coil 404 connected in parallel with the power consumption end. The excitation coil 404 senses the change of the current at the power consumption end and amplifies it into a change of the magnetic field around the excitation coil 404. The carry distance of the carry rod 403 is adjusted by the magnetic field, and then the carry distance of the carry rod 403 is linked to the power connection grounding 401. The windings of different wire groups are connected to the power consumption end circuit through the power connection grounding 401. The high-voltage current of the power grid is converted into a suitable low-voltage current for use and input into the power consumption end through the mutual inductance between the high-voltage winding 301 and the low-voltage winding 302, thereby achieving the purpose of automatically adjusting the multi-level low-voltage power output of the equipment according to the power consumption end connected to the electrical appliance.

[0058] Furthermore, the transformer part 3 is divided into a high-voltage winding 301 and a low-voltage winding 302 with winding coils in a certain ratio. The high-voltage winding 301 is connected to the high-voltage electricity of the external power grid through the high-voltage switch 1, and a current of corresponding voltage is generated in the low-voltage winding 302 connected to the power consumption end through mutual inductance and output to the power consumption end. Multiple low-voltage windings 302 are arranged in an arc shape at equal intervals on the outside of the high-voltage winding 301. The high-voltage winding 301 is coaxially provided with a rotationally adjustable power connection grounding iron 401. The power connection grounding iron 401 is associated with the power of the electrical appliance connected to the power consumption end, and the low-voltage winding 302 connected to the circuit is automatically converted according to the current of the power consumption end, so that the application range of the equipment is larger and the use is more convenient.

[0059] Furthermore, an excitation coil 404 connected to the power-consuming circuit is provided in the box. When the power-consuming circuit is connected to electrical appliances of different powers, the total resistance of the circuit changes, and the current passing through the circuit changes accordingly. The change in current causes the magnetic field strength around the excitation coil 404 to change, and then the excitation coil 404 controls the carry of the carry rod 403 through the magnetic field. The different carry distances of the carry rod 403 are linked to the rotation angle of the power grounding iron 401 through the traction line group 402. The different rotation angles of the power grounding iron 401 switch the low-voltage winding 302 connected to the power-consuming circuit, thereby achieving the effect of automatically switching the output voltage according to the power consumption needs of the power consumption end.

[0060] The power-connecting grounding iron 401 is hingedly arranged on the side of the rotating shaft 9 through the first spring 6, and the side of the low-voltage winding 302 is also hingedly provided with a block corresponding to the power-connecting grounding iron 401. In order to avoid the resetting of the power-connecting grounding iron 401 at the moment of circuit disconnection, a limit pin 406 which rotates synchronously with the power-connecting grounding iron 401 is arranged on the side of the low-voltage winding 302, and the limit pin 406 automatically withdraws from the limit in conjunction with the rotation of the power-connecting grounding iron 401. At the moment of power failure, the limit pin 406 pops out to limit the deflection of the block 12, thereby ensuring the normal power supply of the equipment at this gear position.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation, comprising a box, a busbar part, a high-voltage switch (1) and a low-voltage switch (2), wherein the box is used for mounting and carrying electrical accessories, and the electrical accessories are connected through the busbar part, and the high-voltage switch (1) and the low-voltage switch (2) respectively control and protect the high-voltage power input and the low-voltage power output, characterized in that: Also includes: A transformer part (3), wherein the transformer part (3) is arranged inside the box, the transformer part (3) comprising a high-voltage winding (301) and a low-voltage winding (302), the high-voltage winding (301) being connected to a high-voltage power grid, the low-voltage winding (302) outputting low-voltage power distribution, and a plurality of low-voltage windings (302) being coaxially arranged on the outside of the high-voltage winding (301); A voltage regulating component (4), wherein the voltage regulating component (4) is partially arranged in the middle of the plurality of low-voltage windings (302), and the voltage regulating component (4) regulates the output voltage according to a current change at the power consumption end; The voltage regulating assembly (4) comprises an electrical grounding iron (401), the electrical grounding iron (401) is coaxially rotatably arranged with the high-voltage winding (301), a traction line group (402) is fixedly connected to the side of the electrical grounding iron (401), the traction line group (402) is wound with a carry rod (403), the carry rod (403) is carry-connected to the inner wall of the box via a spring, an excitation coil (404) is fixedly arranged on the inner wall of the box corresponding to the carry rod (403), the excitation coil (404) is connected in series with the power-consuming end, amplifies the current change of the power-consuming end and expresses it as a change of the magnetic field around the excitation coil (404), the carry rod (403) overcomes the spring force under the action of magnetic fields of different intensities and carries different distances, and the carry rod (403) pulls the electrical grounding iron (401) through the traction line group (402) to rotate at different angles to connect the corresponding low-voltage winding (302); A rotating disk (405) is rotatably arranged above the advancing rod (403), a limiting pin (406) is arranged on the side spring of the low-voltage winding (302), the rotating disk (405) is transmission-connected to the limiting pin (406), and rotates synchronously with the power connection grounding iron (401), and the advancing rod (403) drives the limiting pin (406) to move through the rotating disk (405), so as to adapt to the rotation limit of the power connection grounding iron (401).

2. The multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation according to claim 1, characterized in that: The high-voltage switch (1) is connected in series with the high-voltage winding (301), the high-voltage winding (301) has the least number of winding turns, the power connection ground (401) is coaxially rotatably arranged with the high-voltage winding (301), and the plurality of low-voltage windings (302) are connected in parallel and arranged around the outside of the high-voltage winding (301).

3. The multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation according to claim 1, characterized in that: The inner wall of the box body is fixedly connected to a slide rail (5) corresponding to the excitation coil (404), the carrying rod (403) is slidably arranged inside the slide rail (5), and one end of the carrying rod (403) extending into the inside of the slide rail (5) is fixedly connected to a first spring (6).

4. The multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation according to claim 3, characterized in that: A slider (7) is also slidably arranged on the inner side of the slide rail (5); one end of the first spring (6) away from the advancement rod (403) is fixedly connected to the slider (7); a tightening bolt (8) is penetrated through the side wall of the end of the slide rail (5) away from the excitation coil (404) and the bearing is provided with the tightening bolt (8); the tightening bolt (8) penetrates the slider (7) and is threadedly connected thereto.

5. The multi-winding automatic voltage regulating high-voltage and low-voltage pre-installed substation according to claim 1, characterized in that: The inner wall bearing of the box body is provided with a rotating shaft (9), the power connection ground (401) is hingedly provided on the side of the rotating shaft (9), and a second spring (10) is insulated and provided between the power connection ground (401) and the side wall of the rotating shaft (9).

6. The multi-winding automatic voltage regulating high-voltage and low-voltage prefabricated substation according to claim 1, characterized in that: The traction line group (402) includes a first cable (4021), one end of which is fixedly connected to the inner wall of the box; a winding wheel (4022) is fixedly provided on the side of the rotating shaft (9) of the power connection grounding iron (401); a winding pulley (4023) is provided on the side of the advancing rod (403) and the inner wall of the box; the first cable (4021) is wound around the advancing rod (403) through the winding pulley (4023) and then extends to the side of the winding wheel (4022) for fixing.

7. The multi-winding automatic voltage regulating high-voltage and low-voltage prefabricated substation according to claim 1, characterized in that: The inner wall of the box body is fixedly connected with a mounting shaft, and the rotating disk (405) is rotatably arranged above the advancing rod (403) through the mounting shaft. The sides of the advancing rod (403) and the rotating disk (405) are both fixed with protrusions (11), and the advancing rod (403) and the rotating disk (405) are meshed and transmitted through the protrusions (11).

8. The multi-winding automatic voltage regulating high-voltage and low-voltage prefabricated substation according to claim 1, characterized in that: A stopper (12) is hingedly provided on the side of the low-voltage winding (302) to adapt to the electrical ground (401); a U-shaped block (13) is fixedly provided on the side of the low-voltage winding (302) near the stopper (12); the limit pin (406) is slidably provided on the side of the low-voltage winding (302) through the U-shaped block (13); and a tightening spring is provided between the end of the limit pin (406) away from the stopper (12) and the side wall of the low-voltage winding (302).

9. The multi-winding automatic voltage regulating high-voltage and low-voltage prefabricated substation according to claim 1, characterized in that: A limit block (14) is fixedly arranged on the side of the low-voltage winding (302) corresponding to the block (12), and a tightening spring is also arranged between the block (12) and the low-voltage winding (302).

10. The multi-winding automatic voltage regulating high-voltage and low-voltage prefabricated substation according to claim 1, characterized in that: A return coil spring (15) is arranged between the side of the rotating shaft (9) of the power connection ground (401) and the box body, a wire row (16) is fixedly arranged on the side of the rotating disk (405), and a second cable (17) is wound around the side of the wire row (16). A plurality of the second cables (17) extend to the ends of the limit pins (406) on the sides of different low-voltage windings (302) with different lengths for traction connection.

Images