Combined transformer system capable of automatically regulating capacitance and voltage
By setting guide blocks and spiral grooves on the conductive posts, combined with the design of conductive sheets, and cleaning oxides, the problem of increased contact resistance caused by oxides on tap joints is solved, ensuring the stability of transformer output voltage and voltage regulation accuracy, and extending the service life of conductive posts.
Patent Information
- Application Number
- CN202610103367.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-26
- Publication Date
- 2026-03-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Copper oxide or cuprous oxide products from the tap joint adhere to the surface of the conductive core and contact points, causing an increase in contact resistance and affecting the stability of the transformer's output voltage and the accuracy of voltage regulation.
An automatic capacity and voltage regulating combined transformer system was designed. By setting guide blocks and spiral grooves on the conductive columns, the conductive columns rotate and slide in the cylindrical grooves to clean off oxides. Combined with the design of the conductive sheets, stable conductivity is ensured.
This effectively avoids the influence of oxides on the surface of the conductive posts, maintains the stability and voltage regulation accuracy of the transformer output voltage, and extends the service life of the conductive posts.
Smart Images
Figure CN121601411A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automatic voltage regulating transformer technology, specifically an automatic capacity and voltage regulating combined transformer system. Background Technology
[0002] The automatic capacity and voltage regulating combined transformer system includes a tap changer, which is the core component for realizing the automatic voltage regulation function. At the same time, the system is also equipped with a capacity regulating switch to realize the automatic capacity regulation function. The two types of switches work together to complete the dual regulation of capacity and voltage. In this system, the core function of the tap changer is to regulate the transformer output voltage. The specific working logic is as follows: the high-voltage winding of the transformer has multiple taps (usually the tap range is ±5% of the rated voltage, corresponding to three levels: 10.5kV, 10kV, and 9.5kV). The tap changer changes the transformer ratio by switching the number of turns of the taps in the high-voltage winding, thereby stabilizing the low-voltage side output voltage (such as maintaining the rated voltage of 380V / 220V). The tap changer is mostly made of copper conductive parts. When the tap changer is used in the external environment, the conductive core of the tap changer is usually made of pure copper or copper alloy. Copper is a chemically active metal that can undergo a slow oxidation reaction with oxygen in the air at room temperature to produce dark red copper oxide or cuprous oxide. The copper oxide or cuprous oxide products generated by the tap changer are poor conductors and will adhere to the surface of the conductive core and contact parts. This will directly lead to a significant increase in the contact resistance between the moving and stationary contacts of the tap changer and between the conductive core and the winding taps. The core function of the tap changer is to adjust the transformation ratio by switching the winding taps, and the tap changer is the key channel for current transmission. The unstable contact resistance caused by oxides will cause fluctuations in the voltage drop between the contacts, causing the transformer output voltage to deviate from the set value and reducing the voltage regulation accuracy.
[0003] In summary, to solve the technical problems raised in this paper, this invention proposes an automatic capacity and voltage regulation combined transformer system. Summary of the Invention
[0004] To address the issue mentioned above that the copper oxide or cuprous oxide products generated by the tap changer are poor conductors and adhere to the surface of the conductive core and contact areas, directly leading to a significant increase in contact resistance between the moving and stationary contacts of the tap changer and between the conductive core and the winding taps, causing voltage drop fluctuations between contacts, and resulting in the transformer output voltage deviating from the set value and reducing voltage regulation accuracy, this invention proposes an automatic capacity and voltage regulation combined transformer system. This transformer system includes a transformer tap changer, which includes a mounting plate mounted on the transformer. A sealing cover is provided above the mounting plate. The mounting plate includes: Gear disk one is rotatably connected to the upper center of the mounting disk, and an adjusting component is provided at the upper end of the gear disk one; a rotating disk is provided at the lower end of the gear disk one, and the rotating disk is located at the lower end of the mounting disk. Gear disk two is rotatably connected to the mounting plate, and gear disk two is eccentrically set on the mounting plate. A pointer is set on gear disk two. Three rectangular blocks are mounted on the outer side of the rotating disk. Two mounting plates are installed vertically on the end of the rectangular block away from the rotating disk, with a gap between the two mounting plates and conductive sheets on the opposite surfaces of the two mounting plates. An annular plate is located at the lower end of the mounting plate, and the rotating plate is located inside the annular plate. The conductive components consist of three groups, which are evenly arranged on the annular plate. Each set of conductive components includes: three mounting slots, each slot being formed in an annular plate, with a mounting block in each slot; each mounting block having two cylindrical slots, with conductive posts slidably connected inside the cylindrical slots; initially, the ends of the conductive posts near the rotating disk do not protrude from the cylindrical slots; adjusting blocks are located at the ends of the two conductive posts away from the rotating disk, with arc-shaped sides and rollers on the arc surfaces; springs are installed between the adjusting blocks and the mounting blocks; the conductive posts are located inside the adjusting blocks; two conductive slots are formed at the top of the adjusting blocks for mounting conductive cables; and the voltage of the conductive posts in each mounting block of each set of conductive components is different. An adjusting ring is located at the lower end of the mounting plate. An arc-shaped plate is located inside the adjusting ring. Multiple extrusion blocks are evenly arranged on the inner wall of the adjusting ring, and inclined surfaces are provided on both sides of the extrusion blocks. The adjusting groove is located between two adjacent extrusion blocks.
[0005] As a preferred embodiment of this application, the conductive post is configured in two segments, and the two ends of the conductive post are rotatably connected, and the connection between the two conductive posts is conducted through a conductive material; one segment of the conductive post located inside the mounting block is fixed inside the mounting block; a spiral groove is formed on the surface of the conductive post located away from the mounting block, and a guide block is provided inside the cylindrical groove, with the guide block slidably connected inside the spiral groove.
[0006] As a preferred embodiment of this application, the interior of the cylindrical groove is provided with a through groove, which is inclined toward the center of the mounting block and is inclined downward.
[0007] As a preferred embodiment of this application, a groove is provided in the middle of the mounting block, the two sides of the groove are inclined upwards, and the two sides of the groove are connected to the through groove; a slider is slidably connected inside the groove, and in the initial state, the two sides of the slider are closed to the through groove; a connecting post is slidably connected inside the mounting block, and one end of the connecting post is connected to the slider.
[0008] As a preferred embodiment of this application, elastic plates are provided on both sides of the slider. The elastic plates are made of copper sheet. In the initial state, the elastic plates are located inside the through groove and are in close contact with the side wall of the through groove, and are parallel to the side wall of the through groove.
[0009] As a preferred embodiment of this application, the elastic plate is provided with multiple strip grooves that penetrate the elastic plate, and the interior of the grooves is provided with arc-shaped protrusions, the size of which is smaller than that of the strip grooves.
[0010] As a preferred embodiment of this application, the conductive sheets between the two mounting plates are both arc-shaped. The conductive sheets are elastic copper sheets, with the upper conductive sheet having an arc-shaped downward protrusion and the lower conductive sheet having an arc-shaped upward structure.
[0011] As a preferred embodiment of this application, the middle part of the two conductive sheets is recessed. Specifically, the middle part of the upper conductive sheet is recessed upwards, and the middle part of the lower conductive sheet is recessed inwards. The middle recess of the two conductive sheets forms a cylindrical channel, and the size of the middle recess of the two conductive sheets is the same as the diameter of the conductive column.
[0012] The beneficial effects of this invention are as follows: The two sections of the conductive post are rotatably connected, and the connection between the two sections is conductive. The conductive post located inside the adjusting block is fixed inside the adjusting block, and a spiral groove is opened on the outer side of the conductive post away from the adjusting block. A guide block is set inside the cylindrical groove. When the conductive post moves towards the mounting plate, the conductive post slides inside the cylindrical groove. During this process, the guide block is fixed inside the cylindrical groove and slides inside the spiral groove, so that the guide block guides the conductive post, causing the conductive post to rotate. As the conductive post slides towards the mounting plate, it rotates synchronously, thereby improving the friction effect between the inner wall of the cylindrical groove and the surface of the conductive post, and further preventing oxides on the surface of the conductive post from affecting its conductivity. Attached Figure Description
[0013] Figure 1 This is a perspective view of the tap changer in this invention; Figure 2 This is a perspective view of the tap changer after the sealing cover has been removed in this invention; Figure 3 yes Figure 2 The front view in the middle; Figure 4 This is a bottom-view perspective view of the tap changer in this invention; Figure 5 This is a perspective view of gear disk one and gear disk two in this invention; Figure 6 This is a bottom view of the rotating disk, annular plate, and adjusting ring in this invention; Figure 7 This is a structural view of the annular plate in this invention; Figure 8 This is a structural view of the rotating disk in this invention; Figure 9 This is a partial cross-sectional view of the adjusting ring and mounting block in this invention; Figure 10 This is a structural view of the mounting block and adjusting block in this invention; Figure 11 This is a partial cross-sectional view of the mounting block in this invention; Figure 12 yes Figure 11 A magnified view of a section at point A in the middle; Figure 13 This is a structural view of the conductive pillar in this invention; Figure 14 This is a structural view of the connecting column and slider in this invention; In the diagram: Mounting disc 1, Gear disc 11, Adjusting component 12, Rotating disc 13, Gear disc 2 14, Rectangular block 15, Mounting plate 151, Conductive sheet 152, Annular plate 16, Conductive component 2, Mounting groove 21, Mounting block 22, Columnar groove 23, Conductive column 24, Adjusting block 25, Adjusting ring 17, Extrusion block 18, Spiral groove 241, Guide block 231, Through groove 232, Sliding groove 221, Sliding block 222, Connecting column 223, Elastic plate 224, Strip groove 225. Detailed Implementation
[0014] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0015] Example 1:
[0016] like Figures 1 to 14 As shown; an automatic capacity and voltage regulating combined transformer system; the transformer system includes a transformer tap changer, the tap changer includes a mounting plate 1, the mounting plate 1 is mounted on the transformer; a sealing cover is provided above the mounting plate 1; the mounting plate 1 includes: Gear disk 11 is rotatably connected to the upper center of mounting disk 1, and an adjusting element 12 is provided at the upper end of gear disk 11; a rotating disk 13 is provided at the lower end of gear disk 11, and the rotating disk 13 is located at the lower end of mounting disk 1. Gear disk 2 14 is rotatably connected to mounting disk 1, and gear disk 2 14 is eccentrically set on mounting disk 1. A pointer is set on gear disk 2 14; gear disk 3 is set at the lower end of gear disk 2 14. There are three rectangular blocks 15 on the outside of the rotating disk 13. Two mounting plates 151 are installed vertically on the end of the rectangular block 15 away from the rotating disk 13. There is a gap between the two mounting plates 151, and conductive sheets 152 are provided on the opposite surfaces of the two mounting plates 151. An annular plate 16 is disposed at the lower end of the mounting plate 1, and the rotating plate 13 is located inside the annular plate 16. The conductive component 2 consists of three groups, which are evenly arranged on the annular plate 16. Each set of conductive components 2 includes: three mounting slots 21, which are formed in the annular plate 16, and each mounting slot 21 is provided with a mounting block 22. Each mounting block 22 has two cylindrical slots 23, and a conductive post 24 is slidably connected inside the cylindrical slots 23. In the initial state, the end of the conductive post 24 near the rotating disk 13 does not protrude from the cylindrical slot 23. An adjusting block 25 is provided at the end of the two conductive posts 24 away from the rotating disk 13. The two sides of the adjusting block 25 are arc-shaped, and rollers are provided on the arc surface of the adjusting block 25. A spring is provided between the adjusting block 25 and the mounting block 22. The conductive post 24 is located inside the adjusting block 25. Two conductive slots are formed at the upper end of the adjusting block 25. The conductive slots are used to install conductive cables. The voltage of the conductive post 24 in each mounting block 22 in each set of conductive components 2 is different. The adjusting ring 17 is rotatably connected to the lower end of the mounting plate 1 and has toothed blocks on its outer side. The toothed blocks on the outer side of the adjusting ring 17 mesh with the gear disk. The annular plate 16 is located inside the adjusting ring 17. Multiple extrusion blocks 18 are evenly arranged on the inner wall of the adjusting ring 17. Inclined surfaces are provided on both sides of the extrusion blocks 18. The adjusting groove is located between two adjacent extrusion blocks 18. The conductive post 24 is configured in two segments, and the two ends of the conductive post 24 are rotatably connected, and the connection between the two conductive posts 24 is conducted through a conductive material; one segment of the conductive post 24 located inside the mounting block 22 is fixed inside the mounting block 22; a spiral groove 241 is formed on the surface of the conductive post 24 located away from the mounting block 22, and a guide block 231 is provided inside the cylindrical groove 23, and the guide block 231 is slidably connected inside the spiral groove 241; The specific workflow is as follows; When in use, the operator first connects the cables to the conductive grooves at the upper end of the adjusting block 25, so that the cables connect to the conductive posts 24 located inside the adjusting block 25; then connects the cables to the bolts at the upper end of the mounting plate 151, so that the cables are connected to the conductive sheet 152; when installing the tap changer, the mounting plate 1 is installed on the transformer; then the operator uses tools such as a wrench to adjust the adjusting member 12 at the upper end of the gear disk 11. The adjusting member 12 is existing technology and can be rotated using tools such as a wrench; when the adjusting member 12 rotates, it drives the gear disk 11 to rotate. When the gear disk 11 rotates, it drives the rotating disk 13 to rotate through the shaft at the lower end of the gear disk 11. The rotating disk 13 drives the torque... Rectangular block 15 and two mounting plates 151 rotate, and the conductive sheet 152 at the lower end of mounting plate 151 rotates synchronously with rectangular block 15. During the rotation of gear disk one 11, gear disk one 11 meshes with gear disk two 14, causing gear disk one 11 to drive gear disk two 14 to rotate synchronously. Gear disk three at the lower end of gear disk two 14 rotates synchronously. When gear disk three rotates, it meshes with the toothed block on the outer side of adjusting ring 17, causing gear disk three to drive adjusting ring 17 to rotate. When adjusting ring 17 rotates, the pressing block 18 located inside adjusting ring 17 rotates synchronously with adjusting ring 17. During this process, the inclined surfaces on both sides of pressing block 18 press against the arc surfaces on both sides of adjusting block 25, and the rollers on the arc surfaces on both sides of adjusting block 25 interact with the upper surface of adjusting block 25. The inclined surfaces of the adjusting ring 17 and the adjusting ring 17 rotate together. The inclined surfaces of the adjusting ring 17 press against the rollers on both sides of the adjusting block 25. The rollers slide on the inclined surfaces of the adjusting ring 17, causing the adjusting block 18 to push the adjusting block 25. After being pushed by the adjusting block 17, the adjusting block 25 moves towards the rotating disk 13. During this process, the adjusting block 25 pushes against the two conductive posts 24, causing the conductive posts 24 to slide inside the cylindrical grooves 23 inside the mounting block 22 until the adjusting block 25 enters the mounting groove 21. The spring between the adjusting block 25 and the mounting block 22 is compressed. During the movement of the conductive posts 24, the rotating disk 13 rotates simultaneously. The rectangular block 15 on 13 and the two mounting plates 151 at the ends of the rectangular block 15 rotate synchronously until the two conductive plates 152 between the two mounting plates 151 contact the two conductive posts 24 respectively, so that the two conductive posts 24 are connected to the conductive plates 152. During the movement of the conductive posts 24, the conductive posts 24 slide inside the cylindrical groove 23. During the process, the outer side of the conductive posts 24 rubs against the inner wall of the cylindrical groove 23, so that when the voltage of the transformer is adjusted, the conductive posts 24 slide inside the cylindrical groove 23 to clean the oxide on the outer side of the conductive posts 24. This avoids the problem of unstable contact resistance caused by the oxide on the outer side of the conductive posts 24, which causes fluctuations in the voltage drop between the contacts and causes the transformer output voltage to deviate from the set value. If the voltage of the transformer needs to be adjusted, the operator rotates the adjusting component 12. During this rotation, gear disc 11, gear disc 24, gear disc 3, adjusting ring 17, and rotating disk 13 rotate synchronously. During this process, the pressing block 18 inside the adjusting ring 17 pushes the adjusting block 25. When the adjusting block 25 moves between the two pressing blocks 18, the spring between the pressing block 18 and the mounting block 22 extends elastically, causing the pressing block 18 to move away from the rotating disk 13. During this process, the two conductive posts 24 slide inside the cylindrical groove 23, causing... During the process of the two conductive posts 24 being drawn into the cylindrical groove 23, the outer side of the conductive post 24 rubs against the inner wall of the cylindrical groove 23, and the inner wall of the cylindrical groove 23 cleans the oxide on the outer side of the conductive post 24. Then, the adjusting component 12 is continuously rotated, the rotating disk 13 rotates, and the pressing block 18 presses the adjusting block 25 again, causing the conductive post 24 to extend out of the cylindrical groove 23 again. During this process, the inner wall of the cylindrical groove 23 cleans the surface of the conductive post 24 again. This continues until the conductive sheet 152 on the inner wall of the corresponding mounting plate 151 contacts the corresponding conductive post 24, and the voltage is adjusted to achieve conduction. When the transformer is not in use, the operator rotates the adjusting component 12 so that the adjusting block 25 is positioned between the adjacent pressing blocks 18. At this time, the conductive post 24 is located inside the cylindrical groove 23, so that the outer wall of the conductive post 24 does not contact the outside, thereby slowing down the oxidation rate of the outer side of the conductive post 24 in the air and thus improving the service life of the conductive post 24. Based on the above, the conductive post 24 is configured in two segments, with a rotatable connection between the two segments, and the connection between the two segments is conducted through a conductive element; the conductive post 24 located inside the adjusting block 25 is fixed inside the adjusting block 25, and a spiral groove 241 is formed on the outer side of the conductive post 24 away from the adjusting block 25; a guide block 231 is provided inside the cylindrical groove 23; when the conductive post 24 moves towards the mounting plate 1, the conductive post 24 slides inside the cylindrical groove 23. During this process, the guide block 231 is fixed inside the cylindrical groove 23, and at the same time, the guide block 231 slides inside the spiral groove 241, so that the guide post guides the conductive post 24, causing the conductive post 24 to rotate. Thus, as the conductive post 24 slides towards the mounting plate 1, it rotates synchronously, thereby improving the friction effect between the inner wall of the cylindrical groove 23 and the surface of the conductive post 24, and further avoiding oxides on the surface of the conductive post 24, which would affect the conductivity of the conductive post 24.
[0017] Example 2:
[0018] like Figures 1 to 13 As shown; the cylindrical groove 23 has a through groove 232 inside, the through groove 232 is inclined towards the middle of the mounting block 22, and the through groove 232 is inclined downward; The mounting block 22 has a groove 221 in the middle, the two sides of the groove 221 are inclined upward, and the two sides of the groove 221 are connected to the through groove 232; a slider 222 is slidably connected inside the groove 221. In the initial state, the two sides of the slider 222 are closed to the through groove 232; a connecting post 223 is slidably connected inside the mounting block 22, and one end of the connecting post 223 is connected to the slider 222. The specific workflow is as follows; Based on the above embodiment 1, a through groove 232 is opened inside the cylindrical groove 23, and the through groove 232 is inclined towards the middle of the mounting block 22 and inclined downward; when the conductive post 24 moves towards the mounting plate 1 inside the cylindrical groove 23, the conductive post 24 rotates synchronously during the sliding process inside the cylindrical groove 23; and during this process, the surface of the conductive post 24 will contact the through groove 232, and during this process, the edge at the groove opening of the through groove 232 will scrape the surface of the conductive post 24, so that the oxide on the surface of the conductive post 24 is scraped off, and the scraped oxide will fall into the through groove 232, thereby avoiding the problem of excessive oxide remaining inside the cylindrical groove 23, which would cause the conductive post 24 to move poorly inside the cylindrical groove 23; A sliding groove 221 is formed inside the mounting block 22, with both sides of the groove 221 inclined upwards. Both sides of the groove 221 communicate with the through groove 232. A slider 222 is slidably connected inside the groove 221. Initially, the slider 222 is closed off from the through groove 232 on both sides. A connecting post 223 is slidably connected inside the mounting block 22. One end of the connecting post 223 is connected to the slider 222, and the other end is located at the end of the rectangular groove away from the mounting plate 1. When the adjusting member 12 rotates, the gear disk... 11. Gear disk 2, gear disk 3, and adjusting ring 17 rotate, causing the pressing block 18 on the inner wall of adjusting ring 17 to press against adjusting block 25. Adjusting block 25 moves towards mounting disk 1 until it is fully inside mounting groove 21. During this process, adjusting block 25 presses against connecting post 223. After being pressed, connecting post 223 moves towards mounting disk 1. During the process, the connecting column 223 pushes the slider 222 to move towards the mounting plate 1 inside the groove 221, so that the two ends of the slider 222 gradually intersect with the through groove 232, and the two ends of the slider 222 gradually stop closing the through groove 232. This allows the oxide that falls into the through groove 232 to slide off from the inside of the through groove 232, thus avoiding the problem of too much oxide remaining inside the through groove 232 and causing too much oxide to remain inside the cylindrical groove 23. When the transformer is not in use, as described in the first embodiment above, the adjusting block 25 is positioned between the adjacent pressing block 18. At this time, it receives the spring action between the slider 222 and the groove 221, and the slider 222 resets, so that the two ends of the slider 222 close the through groove 232 again. This means that when the conductive column 24 is inside the cylindrical groove 23, the outside air will not come into too much contact with the outside of the conductive column 24 through the through groove 232, reducing the probability of the outside of the conductive column 24 coming into contact with air, and thus reducing the probability of oxide appearing on the surface of the conductive column 24.
[0019] Example 3:
[0020] like Figures 3 to 14 As shown; elastic plates 224 are provided on both sides of the slider 222. The elastic plates 224 are made of metal copper sheet. In the initial state, the elastic plates 224 are located inside the through groove 232, and the elastic plates 224 are in close contact with the side wall of the through groove 232 and are parallel to the side wall of the through groove 232. Multiple strip grooves 225 are provided on the elastic plate 224. The strip grooves 225 penetrate the elastic plate 224, and an arc-shaped protrusion 233 is provided inside the through groove 232. The size of the arc-shaped protrusion 233 is smaller than that of the strip groove 225. The specific workflow is as follows; Furthermore, elastic plates 224, which are made of copper sheets, are provided on both sides of the slider 222. In the initial state, the elastic plates 224 are located inside the through groove 232 and are in close contact with the side wall of the through groove 232. As the slider 222 moves toward the mounting plate 1, the slider 222 drives the elastic plates 224 to move. At this time, the elastic plates 224 will first tilt. Then, as the slider 222 moves, the end of the elastic plate 224 that is not connected to the slider 222 will contact the other side wall of the through groove 232. As the slider 222 moves, the elastic plates 224 tend to move from the inside of the through groove 232, so that the elastic plates 224 push out the oxide inside the through groove 232, thereby preventing the oxide from remaining inside the through groove 232. When the slider 222 resets, the elastic plates 224 simultaneously perform elastic reset. Furthermore, by providing multiple slots 225 through the elastic plate 224, and based on the above embodiment, when the slider 222 moves towards the mounting plate 1, the slider 222 drives the elastic plate 224 towards the through groove 232. During this process, the elastic plate 224 is in an inclined state. At this time, since the conductive post 24 moves synchronously inside the cylindrical groove 23, the oxide on the surface of the conductive post 24 will fall into the through groove 232. At this time, the oxide falling from the surface of the conductive post 24 will fall from the slots 225 of the elastic plate 224; thus... To prevent excessive oxides from being located between the elastic plate 224 and the inner wall of the through groove 232 when the elastic plate 224 is reset; and when the elastic plate 224 is reset, the elastic plate 224 tends to fit against the inner wall of the through groove 232. At this time, the strip groove 225 on the elastic plate 224 gradually approaches the arc protrusion 233. Since the size of the arc protrusion 233 is smaller than that of the strip groove 225, the arc protrusion 233 will gradually embed into the strip groove 225. If there are oxides blocking the strip groove 225, the arc protrusion 233 can clear the strip groove 225 and ensure the unobstructed flow of the strip groove 225.
[0021] Example 4:
[0022] like Figures 4 to 14 As shown; the conductive sheets 152 between the two mounting plates 151 are both arc-shaped. The conductive sheets 152 are elastic copper sheets, and the upper conductive sheet 152 is arc-shaped and protrudes downward, while the lower conductive sheet 152 is arc-shaped and has an upward structure. The middle part of the two conductive sheets 152 is recessed. Specifically, the middle part of the upper conductive sheet 152 is recessed upwards, and the middle part of the lower conductive sheet 152 is recessed inwards. The middle recess of the two conductive sheets 152 forms a cylindrical channel, and the size of the middle recess of the two conductive sheets 152 is smaller than the diameter of the conductive column 24. The specific workflow is as follows; The conductive plates 152 between the two mounting plates 151 are all arc-shaped and are made of elastic copper sheets. The upper conductive plate 152 is arc-shaped and protrudes downwards, while the lower conductive plate 152 is arc-shaped and protrudes upwards. When the conductive post 24 extends, as the rotating disk 13 rotates, the rotating disk 13 drives the rectangular block 15 and the mounting plate 151 to rotate, causing the conductive post 24 to gradually move between the mounting plates 151. When the conductive post 24 moves between the mounting plates 151, the missile post will contact the upper and lower sets of conductive plates 152. Specifically, the gap between the two lower conductive plates 152 is smaller than the diameter of the conductive post 24, so that when the conductive post 24 enters the gap between the two conductive plates 152, the side of the conductive post 24 will contact the two lower conductive plates 152. Friction occurs between the conductive sheets 152, resulting in bidirectional friction at the connection between the conductive post 24 and the conductive sheet 152. Firstly, the conductive sheet 152 scrapes the outer side of the conductive post 24; secondly, the conductive post 24 simultaneously rubs the surface of the conductive sheet 152, thus cleaning both the surfaces of the conductive post 24 and the conductive sheet 152 in both directions. This ensures that there are no oxides at the contact point between the conductive post 24 and the conductive sheet 152. When the edge of the rectangular block 15 is parallel to the edge of the mounting block 22, the conductive post 24 is located between the corresponding upper and lower conductive sheets 152, achieving conductivity. Furthermore, because the middle parts of the conductive sheets 152 are close to each other and the conductive sheets 152 are made of elastic material, the conductive sheets 152 are constantly in a state of compression against the conductive post 24. Furthermore, by making the lower end of the upper conductive sheet 152 have an upward indentation and the upper end of the lower conductive sheet 152 have a downward indentation, and the diameter of the gap between the two indentations is smaller than the diameter of the conductive post 24; when the conductive post 24 is located between the two conductive sheets 152, the outer side of the conductive post 24 will be embedded into the indentation between the upper and lower conductive posts 24 respectively, so that the cylindrical channel formed by the two indentations is in close contact with the outer side of the conductive post 24 and is simultaneously limited.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic capacity and voltage regulating combined transformer system; the transformer system includes a transformer tap changer, the tap changer includes a mounting plate (1), the mounting plate (1) is mounted on the transformer; a sealing cover is provided above the mounting plate (1); characterized in that: The installation disk (1) includes: Gear disk 1 (11) is rotatably connected to the upper center of mounting disk (1), and an adjusting element (12) is provided at the upper end of gear disk 1 (11); a rotating disk (13) is provided at the lower end of gear disk 1 (11), and the rotating disk (13) is located at the lower end of mounting disk (1). Gear disk two (14) is rotatably connected to mounting disk (1), and gear disk two (14) is eccentrically set on mounting disk (1). A pointer is provided on gear disk two (14); gear disk three is provided at the lower end of gear disk two (14); Three rectangular blocks (15) are located on the outside of the rotating disk (13). Two mounting plates (151) are installed on the end of the rectangular block (15) away from the rotating disk (13). There is a gap between the two mounting plates (151), and conductive sheets (152) are provided on the opposite surfaces of the two mounting plates (151). An annular plate (16) is disposed at the lower end of the mounting plate (1), and the rotating plate (13) is located inside the annular plate (16); The conductive components (2) are in three groups and are evenly arranged on the annular plate (16); Each set of conductive components (2) includes: three mounting slots (21), which are formed in the annular plate (16), and each mounting slot (21) is provided with a mounting block (22). Each mounting block (22) has two cylindrical slots (23), and a conductive post (24) is slidably connected inside the cylindrical slot (23). In the initial state, the end of the conductive post (24) near the rotating disk (13) does not protrude from the cylindrical slot (23), and the two conductive posts (24) are far away from the rotating disk (13). 13) One end is provided with an adjustment block (25), the two sides of the adjustment block (25) are arc-shaped, and rollers are provided on the arc surface of the adjustment block (25). A spring is provided between the adjustment block (25) and the mounting block (22); the conductive post (24) is located inside the adjustment block (25); two conductive grooves are opened at the upper end of the adjustment block (25), and the conductive grooves are used to install conductive cables; and the voltage of the conductive post (24) in each mounting block (22) of each set of conductive components (2) is different; An adjusting ring (17) is set at the lower end of the mounting plate (1). An arc plate is located inside the adjusting ring (17). Multiple extrusion blocks (18) are evenly arranged on the inner wall of the adjusting ring (17). Inclined surfaces are provided on both sides of the extrusion blocks (18). The adjusting groove is located between two adjacent extrusion blocks (18).
2. The automatic capacity and voltage regulation combined transformer system as described in claim 1, characterized in that: The conductive post (24) is set in two segments, and the two ends of the conductive post (24) are rotatably connected, and the connection between the two conductive posts (24) is conducted through conductive material; one segment of the conductive post (24) located inside the mounting block (22) is fixed inside the mounting block (22); a spiral groove (241) is opened on the surface of the conductive post (24) away from the mounting block (22), and a guide block (231) is set inside the cylindrical groove (23), and the guide block (231) is slidably connected inside the spiral groove (241).
3. The automatic capacity and voltage regulation combined transformer system as described in claim 2, characterized in that: The cylindrical groove (23) has a through groove (232) inside. The through groove (232) is inclined towards the middle of the mounting block (22) and is inclined downward.
4. The automatic capacity and voltage regulation combined transformer system as described in claim 3, characterized in that: The mounting block (22) has a groove (221) in the middle. The two sides of the groove (221) are inclined upward and are connected to the through groove (232). The inside of the groove (221) is a slider (222). In the initial state, the two sides of the slider (222) are closed to the through groove (232). The inside of the mounting block (22) is a connecting post (223). One end of the connecting post (223) is connected to the slider (222).
5. The automatic capacity and voltage regulation combined transformer system as described in claim 4, characterized in that: The slider (222) is provided with elastic plates (224) on both sides. The elastic plates (224) are made of metal copper sheet. In the initial state, the elastic plates (224) are located inside the through groove (232) and the elastic plates (224) are in close contact with the side wall of the through groove (232) and parallel to the side wall of the through groove (232).
6. The automatic capacity and voltage regulation combined transformer system as described in claim 5, characterized in that: Multiple strip grooves (225) are provided on the elastic plate (224), the strip grooves (225) penetrate the elastic plate (224), and an arc-shaped protrusion (233) is provided inside the through groove (232), the size of the arc-shaped protrusion (233) is smaller than that of the strip groove (225).
7. The automatic capacity and voltage regulation combined transformer system as described in claim 1, characterized in that: The conductive sheet (152) between the two mounting plates (151) is arc-shaped. The conductive sheet (152) is an elastic copper sheet, and the upper conductive sheet (152) is arc-shaped and protrudes downward, while the lower conductive sheet (152) is arc-shaped and upward.
8. The automatic capacity and voltage regulation combined transformer system as described in claim 7, characterized in that: The middle of the two conductive sheets (152) is recessed. Specifically, the middle of the upper conductive sheet (152) is recessed upwards, and the middle of the lower conductive sheet (152) is recessed inwards. The recessed middle part of the two conductive sheets (152) forms a cylindrical channel, and the size of the recessed middle part of the two conductive sheets (152) is the same as the diameter of the conductive column (24).