A power distribution transformer that automatically adjusts voltage

Abstract

The application relates to the field of transformers, in particular to a power distribution transformer capable of automatically adjusting voltage, which comprises a power distribution transformer body, a drive box is installed on one side of the power distribution transformer body through an insulating mounting cylinder, an adjusting disc is rotatably installed at the bottom of the drive box, a plurality of voltage transformation containers are arranged below the adjusting disc, each voltage transformation container is connected with adjusting rod one, adjusting rod two and adjusting rod three respectively, a connecting rod is connected with one end of each adjusting rod, and one end of the connecting rod is in contact and communication with a conductive contact block arranged on the inner wall of a voltage transformation adjusting cylinder through an excitation contact block. When the voltage fluctuation range is large, the power distribution transformer body is tripped, an electromagnet is used to adsorb the adjusting rod assembly, the adjusting rod of the corresponding line is adsorbed to go up, at this moment, the excitation contact block is separated from the conductive contact block of the corresponding voltage line, and the drive motor rotates the excitation contact block to contact and power on the conductive contact block of another voltage gear.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a distribution transformer capable of automatically adjusting voltage. Background Art

[0002] A distribution transformer is a stationary electrical device used in power distribution systems to transform AC voltage and current according to the law of electromagnetic induction, thereby transmitting AC power. A distribution transformer is a device that converts an AC voltage (current) of a certain value into another or several voltages (currents) with the same frequency but different values. It is typically used to reduce the voltage of a high-voltage power grid to a voltage level suitable for use by households, commercial and industrial users.

[0003] At present, traditional distribution transformers are mostly manually adjusted in conjunction with tap changers. Although they can achieve basic adjustment functions, in actual use, the traditional adjustment method is not only slow to detect problems, but also the adjustment process is cumbersome. Therefore, there is an urgent need for a distribution transformer that can automatically adjust the voltage. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a distribution transformer with automatic voltage regulation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A distribution transformer with automatic voltage regulation includes a distribution transformer body, a drive box mounted on one side of the distribution transformer body via an insulating mounting cylinder, an adjustment disk rotatably mounted on the bottom of the drive box, and a plurality of voltage transformer containers disposed below the adjustment disk. Each voltage transformer container is connected to a first adjustment rod, a second adjustment rod, and a third adjustment rod, respectively. A connecting rod is connected to one end of each adjustment rod, and one end of the connecting rod is in contact and communication with a conductive contact provided on the inner wall of the voltage regulation cylinder via an excitation contact.

[0007] A through groove is provided on one side of the inner wall of the transformer container, and slide grooves are provided on the upper and lower ends of the inner wall of the through groove. A connecting rod is slidably installed in the slide groove through a slider. An excitation contact is installed on one end of the connecting rod, and a connecting rod is rotatably installed on the other end. The other end of the connecting rod is rotatably installed on one side of the outer wall of the adjusting rod three.

[0008] A spring is installed on one side of the sliding groove, and the other end of the spring is connected to the sliding block.

[0009] In addition, the preferred structure is that a transformer regulating cylinder is installed inside the insulating mounting cylinder, and a plurality of wire connection ends are installed on one side of the outer wall of the transformer regulating cylinder. The other end of the wire connection end extends into the interior of the transformer regulating cylinder and is connected to a conductive contact. When the conductive contact is squeezed into contact with the excitation contact, the circuit is connected.

[0010] In addition, the preferred structure is that a drive motor is installed on one side of the interior of the drive box, a voltage sensing module is connected to one side of the drive motor, and the output end of the drive motor extends out of the bottom wall of the drive box and is connected to an adjustment disk.

[0011] In addition, the preferred structure is that the bottom wall of the adjustment disk is provided with a plurality of annular adjustment grooves, and the inner wall of each annular adjustment groove is installed with an electromagnet, and the electromagnet and magnetic block one, magnetic block two, and magnetic block three form a magnetic attraction structure with each other.

[0012] In addition, the preferred structure is that a through hole is opened in the middle of the transformer container, an adjusting rod three is installed in the through hole, an adjusting rod two is installed in the middle of the adjusting rod three, and an adjusting rod one is installed in the middle of the adjusting rod two.

[0013] In addition, the preferred structure is that magnetic blocks 1, 2 and 3 are fixedly installed on the upper parts of the adjusting rods 1, 2 and 3 respectively, and an adjusting disk is provided above the magnetic blocks 1, 2 and 3.

[0014] In addition, the preferred structure is that the middle parts of the adjusting rods 1, 2 and 3 correspond to the through groove positions opened in the middle of the strain container, and their outer walls are rotatably mounted with connecting rods, and the other ends of the connecting rods are rotatably mounted on one end of the connecting rod.

[0015] In addition, a preferred structure is that an expansion groove is opened on one side of the interior of the pressure-changing container, and a connecting rod is movably installed in the expansion groove for limiting movement.

[0016] In addition, a preferred structure is that a through hole is opened at the bottom of the regulating rod 1, a mounting base is inserted into the through hole, and the mounting base is fixedly mounted on the bottom wall of the transformer regulating cylinder.

[0017] In addition, a preferred structure is that the voltage sensing module is electrically connected to the drive motor, the distribution transformer body, and the electromagnet.

[0018] The beneficial effects of the present invention are:

[0019] In the present invention, when the voltage sensing module detects that the voltage fluctuation range is large, the distribution transformer body is disconnected and the electromagnet generates electromagnetic attraction, and the corresponding adjustment rod assembly is adsorbed. The adjustment rod of the corresponding circuit is adsorbed upward. At this time, the excitation contact is separated from the conductive contact of the corresponding voltage circuit, and under the rotation of the drive motor, the excitation contact is rotated to the conductive contact of another voltage position to contact and energize, effectively realizing the automatic adjustment function, and the adjustment process is stable, problems are discovered quickly, and the operation stability of the transformer is effectively increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the overall structure of a distribution transformer with automatic voltage regulation proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the installation structure of the voltage transformer and regulator tube proposed in the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the voltage transformer and regulator tube proposed in the present invention;

[0023] Figure 4 This is a schematic diagram of the external structure of the pressure transformer container proposed in the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure of the adjusting rod proposed in the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the regulating rod and the pressure-transforming container proposed in the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of point A proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the drive box connection structure proposed by the present invention.

[0028] In the figure: 1. Distribution transformer body; 2. Insulation mounting cylinder; 3. Drive box; 4. Voltage transformer regulating cylinder; 5. Wire connection terminal; 51. Conductive contact; 6. Voltage transformer container; 7. Adjustment rod one; 71. Magnetic block one; 8. Adjustment rod two; 81. Magnetic block two; 9. Adjustment rod three; 91. Magnetic block three; 10. Excitation contact; 11. Connecting rod; 12. Connecting rod; 13. Mounting base; 14. Spring; 15. Slider; 16. Slide; 17. Expansion slot; 18. Drive motor; 19. Voltage sensor module; 20. Adjustment disk; 21. Electromagnet; 22. Adjustment slot. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figures 1-8 A distribution transformer with automatic voltage regulation includes a distribution transformer body 1. A drive box 3 is mounted on one side of the distribution transformer body 1 through an insulating mounting tube 2. An adjusting disk 20 is rotatably mounted on the bottom of the drive box 3. A plurality of voltage transformer containers 6 are provided below the adjusting disk 20. Each voltage transformer container 6 is connected to an adjusting rod 1 7, an adjusting rod 2 8, and an adjusting rod 3 9, respectively. A connecting rod 11 is connected to one end of each adjusting rod. One end of the connecting rod 11 is in contact and communication with a conductive contact 51 provided on the inner wall of the voltage regulating tube 4 through an excitation contact 10.

[0031] Furthermore, a through groove is provided on one side of the interior of the transformer container 6, and a slide groove 16 is provided on the upper and lower ends of the inner wall of the through groove. A connecting rod 11 is slidably mounted inside the slide groove 16 through a slider 15. An excitation contact 10 is mounted on one end of the connecting rod 11, and a connecting rod 12 is rotatably mounted on the other end. The other end of the connecting rod 12 is rotatably mounted on one side of the outer wall of the adjusting rod 3 9;

[0032] Furthermore, a spring 14 is installed on one side of the inner portion of the slide groove 16 , and the other end of the spring 14 is connected to the slider 15 . The reset and pressing function of the spring 14 provides a reset capability during the adjustment of the slider 15 .

[0033] Furthermore, a transformer regulating cylinder 4 is installed inside the insulating mounting cylinder 2, and a plurality of wire connection terminals 5 are installed on one side of the outer wall of the transformer regulating cylinder 4. The other end of the wire connection terminal 5 extends into the interior of the transformer regulating cylinder 4 and is connected to a conductive contact 51. When the conductive contact 51 is squeezed into contact with the excitation contact 10, the circuit is connected.

[0034] Furthermore, a drive motor 18 is installed on one side of the interior of the drive box 3, and a voltage sensing module 19 is connected to one side of the drive motor 18. The output end of the drive motor 18 extends out of the bottom wall of the drive box 3 and is connected to an adjustment disk 20. When the adjustment disk 20 is energized, electromagnetic attraction is generated, and the adjustment rod at the bottom is adsorbed and adjusted, thereby completing an efficient and automatic adjustment operation.

[0035] Furthermore, the bottom wall of the adjustment disk 20 is provided with a plurality of annular adjustment grooves 22 , and an electromagnet 21 is installed on the inner wall of each annular adjustment groove 22 . The electromagnet 21 and the magnetic block 1 71 , the magnetic block 2 81 , and the magnetic block 3 91 form a magnetic attraction structure with each other.

[0036] Furthermore, a through hole is opened in the middle of the transformer container 6, and an adjusting rod 3 9 is installed in the through hole. An adjusting rod 2 8 is installed in the middle of the adjusting rod 3 9, and an adjusting rod 1 7 is installed in the middle of the adjusting rod 2 8. The adjusting rods are connected to each other through the socket connection, which effectively improves the integrity of the equipment and enables independent adjustment of different adjusting rods.

[0037] Furthermore, magnetic blocks 1 71 , 2 81 , and 3 91 are fixedly installed on the upper parts of adjusting rod 1 7 , adjusting rod 2 8 , and adjusting rod 3 9 , respectively. An adjusting disk 20 is provided above magnetic blocks 1 71 , 2 81 , and 3 91 .

[0038] Furthermore, the middle parts of the adjusting rod 1 7 , the adjusting rod 2 8 , and the adjusting rod 3 9 correspond to the through groove positions opened in the middle part of the strain container 6 , and their outer walls are rotatably mounted with connecting rods 12 , and the other end of the connecting rod 12 is rotatably mounted on one end of the connecting rod 11 .

[0039] Furthermore, an expansion groove 17 is opened on one side of the interior of the pressure transformer container 6, and a connecting rod 12 is installed in the expansion groove 17 for limited movement. The expansion groove 17 effectively increases the movement space of the connecting rod 12 and ensures the stability of the connecting rod 12 during the rotation process.

[0040] Furthermore, a through hole is provided at the bottom of the regulating rod 7, and a mounting base 13 is inserted into the through hole, and the mounting base 13 is fixedly mounted on the bottom wall of the voltage regulating cylinder 4.

[0041] Furthermore, the voltage sensing module 19 is electrically connected to the drive motor 18, the distribution transformer body 1, and the electromagnet 21. The distribution transformer body 1 is detected by the voltage sensing module 19, and the drive motor 18 is controlled and connected under voltage fluctuations.

[0042] In this embodiment, during the operation of the distribution transformer body 1, the voltage sensing module 19 monitors the voltage of the distribution transformer body 1, and when it is detected that the voltage fluctuation range is large, the voltage sensing module 19 controls the distribution transformer body 1 to open the circuit, cuts off the corresponding current, and energizes the electromagnet 21 provided at the bottom of the control adjustment disk 20 to generate electromagnetic attraction. At this time, according to the corresponding circuit, the electromagnet 21 adsorbs the adjustment rod connected in the corresponding circuit, such as the adjustment rod 3 9, upward, and the adjustment rod 3 9 drives the transformer through the connecting rod 12 during the upward movement. The exciting contact 10 provided on one side of the pressure container 6 moves and contracts. At this time, the exciting contact 10 is disconnected from the guide contact 51 of the A line, and then the driving motor 18 drives the bottom adjustment disk 20 to rotate. The adjustment disk 20 drives the adsorbed adjustment rod 3 9 to rotate axially. The adjustment rod 3 9 rotates in the pressure container 6 and stops when it rotates to the B line, and the electromagnet 21 is controlled to be de-energized. At this time, the adjustment rod 3 9 descends and is ejected and reset by the spring 14 provided inside, and presses the B line (different from the A line voltage), thereby completing the circuit connection.

[0043] Among them, in actual use, a magnetic block three 91 is provided on the top of the adjusting rod three 9 to meet the connection function. At the same time, when the adjusting rod three 9 is in the upward process, the connecting rod 12 moves upward and pulls the connecting rod 11 on one side. The connecting rod 11 slides in the slide groove 16 provided inside the transformer container 6 through the slider 15, and squeezes the spring 14, thereby stimulating the contact block 10 to contract.

[0044] In actual use, a plurality of guide connection terminals 5 are provided on the outside of the voltage transformer regulating tube 4 to represent different voltage circuits, and a voltage transformer container 6 and an excitation contact 10 are provided at one location of each set of guide connection terminals 5 to meet the regulation requirements.

[0045] Among them, in actual use, the adjusting rod 1 7, the adjusting rod 2 8, and the adjusting rod 3 9 are interconnected and interfere with each other, and the adjusting rod 1 7, the adjusting rod 2 8, and the adjusting rod 3 9 are respectively connected to different transformer containers 6. During the adjustment process, only the specified adjusting rod needs to be adjusted to complete the separate adjustment function of the specified line.

[0046] It is worth noting that during the regulation process, the distribution transformer body 1 is disconnected to ensure the stability of voltage regulation.

[0047] It is worth noting that, during the circuit breaker adjustment process of the distribution transformer body 1 , the electromagnetic field generated by the electromagnet 21 is not sufficient to affect the normal operation of the distribution transformer body 1 .

[0048] In the present invention, when the voltage sensing module 19 detects that the voltage fluctuation range is large, the distribution transformer body 1 is disconnected and the electromagnet 21 generates electromagnetic attraction, and adsorbs the corresponding adjustment rod assembly. The adjustment rod of the corresponding circuit is adsorbed upward. At this time, the excitation contact 10 is separated from the conductive contact 51 of the corresponding voltage circuit, and under the rotation action of the drive motor 18, the excitation contact 10 is rotated to the conductive contact 51 of another voltage position to contact and energize, effectively realizing the automatic adjustment function, and the adjustment process is stable, problems are discovered quickly, and the operation stability of the transformer is effectively increased.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A distribution transformer with automatic voltage regulation, comprising a distribution transformer body (1), characterized in that: A drive box (3) is installed on one side of the distribution transformer body (1) through an insulating mounting tube (2), and an adjusting disk (20) is rotatably installed at the bottom of the drive box (3). A plurality of transformer containers (6) are provided below the adjusting disk (20), and each transformer container (6) is connected to an adjusting rod 1 (7), an adjusting rod 2 (8), and an adjusting rod 3 (9), respectively. A connecting rod (11) is connected to one end of each adjusting rod, and one end of the connecting rod (11) is in contact with a conductive contact (51) provided on the inner wall of the transformer adjusting tube (4) through an excitation contact (10); A through groove is provided on one side of the inner wall of the transformer container (6), and a slide groove (16) is provided on the upper and lower ends of the inner wall of the through groove. A connecting rod (11) is installed in the slide groove (16) through a slider (15) to limit the sliding movement. An excitation contact (10) is installed at one end of the connecting rod (11), and a connecting rod (12) is rotatably installed at the other end. The other end of the connecting rod (12) is rotatably installed on one side of the outer wall of the regulating rod (9). A spring (14) is installed on one side of the inner portion of the slide groove (16), and the other end of the spring (14) is connected to the slider (15); A voltage-changing regulating cylinder (4) is installed inside the insulating mounting cylinder (2), and a plurality of wire connection terminals (5) are installed on one side of the outer wall of the voltage-changing regulating cylinder (4). The other ends of the wire connection terminals (5) extend into the interior of the voltage-changing regulating cylinder (4) and are connected to conductive contacts (51). When the conductive contacts (51) are squeezed into contact with the excitation contacts (10), the circuit is connected. A driving motor (18) is installed on one side of the interior of the driving box (3), a voltage sensing module (19) is connected to one side of the driving motor (18), and an output end of the driving motor (18) extends out of the bottom wall of the driving box (3) and is connected to an adjustment disk (20); The bottom wall of the adjustment disk (20) is provided with a plurality of annular adjustment grooves (22), and an electromagnet (21) is installed on the inner wall of each annular adjustment groove (22). The electromagnet (21) and the magnetic block 1 (71), the magnetic block 2 (81), and the magnetic block 3 (91) form a magnetic attraction structure with each other; The middle of the pressure-changing container (6) is provided with a through hole, in which an adjusting rod 3 (9) is installed, the middle of the adjusting rod 3 (9) is sleeved with an adjusting rod 2 (8), and the middle of the adjusting rod 2 (8) is adjusted with an adjusting rod 1 (7); Magnetic blocks 1 (71), 2 (81), and 3 (91) are fixedly mounted on the upper parts of the adjusting rod 1 (7), the adjusting rod 2 (8), and the adjusting rod 3 (9), respectively. An adjusting disk (20) is provided above the magnetic blocks 1 (71), 2 (81), and 3 (91).

2. A distribution transformer with automatic voltage regulation according to claim 1, characterized in that: The middle parts of the regulating rod 1 (7), regulating rod 2 (8) and regulating rod 3 (9) correspond to the through slots opened in the middle of the strain container (6), and the outer walls thereof are all rotatably mounted with connecting rods (12), and the other ends of the connecting rods (12) are rotatably mounted on one end of the connecting rod (11).

3. The distribution transformer with automatic voltage regulation according to claim 2, characterized in that: An expansion groove (17) is provided on one side of the interior of the pressure-changing container (6), and a connecting rod (12) is movably installed in the expansion groove (17) in a limited manner.

4. The distribution transformer with automatic voltage regulation according to claim 1, characterized in that: A through hole is provided at the bottom of the regulating rod 1 (7), and a mounting base (13) is inserted into the through hole. The mounting base (13) is fixedly mounted on the bottom wall of the voltage regulating cylinder (4).

5. The distribution transformer with automatic voltage regulation according to claim 1, characterized in that: The voltage sensing module (19) is electrically connected to the drive motor (18), the distribution transformer body (1), and the electromagnet (21).

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