Transformer system

Abstract

The present invention discloses a transformer system, which relates to the technical field of transformers, including an iron core, a primary winding wrapped around the outer wall of one end of the iron core, a secondary winding wrapped around the other end of the iron core, and an adjusting component for reducing magnetic leakage, wherein the adjusting component includes two annular insulating rings respectively disposed outside the primary winding and the secondary winding, and the radial side walls of the annular insulating rings are provided with silicon steel sheets for absorbing magnetic leakage, and the silicon steel sheets can reciprocate the lateral distance between the inner side walls of the annular insulating rings and the side walls of the iron core to absorb magnetic leakage, and also discloses an installation frame for vacating and erecting the transformer winding in the transformer box. The present invention solves the problem of overheating of the winding end structure due to magnetic leakage in the prior art by enabling the silicon steel sheets to reciprocate the lateral distance between the inner side walls of the annular insulating rings and the side walls of the iron core to absorb magnetic leakage, and at the same time, the transformer winding is vacated and erected in the transformer box by using the installation frame, which is beneficial to the heat dissipation of the winding.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, in particular to a transformer system. Background Art

[0002] The transformer winding is the circuit part of the transformer. It is wound with copper or aluminum wire with high conductivity and is mounted on the iron core of the transformer. The winding plays a vital role in the transformer, used for core excitation and power transmission.

[0003] The two windings of the transformer are wound on the same magnetic core, forming a magnetic flux loop. Therefore, most of the magnetic flux generated by one winding will be conducted and amplified by the magnetic core and pass through the other winding. This part of the magnetic flux is called the main magnetic flux. However, no matter how the two windings are wound, it is impossible to achieve 100% cross-linkage. There is always a part of the magnetic flux that does not pass through the magnetic core and becomes a separate leakage magnetic flux. Both windings will generate leakage magnetic flux, which often generates eddy currents on components such as pull plates and clamps at the ends of the transformer windings. These eddy currents will cause overheating of components such as pull plates and clamps, directly affecting the normal operation of the transformer. Summary of the invention

[0004] The object of the present invention is to provide a transformer system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transformer system, comprising an iron core, a primary winding wrapped around the outer wall of one end of the iron core, a secondary winding wrapped around the other end of the iron core, and an adjustment component for reducing magnetic leakage, the primary winding is an input voltage, the secondary winding is an output voltage, the adjustment component comprises two annular insulating rings respectively placed outside the primary winding and the secondary winding, the radial side wall of the annular insulating ring is provided with a silicon steel sheet for absorbing magnetic leakage, the silicon steel sheet has a high magnetic permeability, can effectively reduce magnetic resistance, improve the efficiency of the transformer, and the iron loss of the silicon steel sheet is low, which can reduce the energy loss of the transformer during operation. In addition, the mechanical strength of the silicon steel sheet is high, which can ensure the stability and reliability of the transformer during use. Therefore, the annular insulating ring is made into a fast and slow alternating annular motion trajectory, thereby driving the silicon steel sheet to be able to reciprocate the lateral distance between the inner side wall of the annular insulating ring and the side wall of the iron core, so that it leaves the transformer winding for heat dissipation operation and absorbs magnetic leakage. At the same time, the problem in the prior art that leakage magnetic flux generates eddy current on the transformer winding end component, which in turn causes overheating of the winding end structure and directly affects the normal operation of the transformer is solved.

[0006] In a further embodiment, a plurality of T-shaped slide plates are fixed to the inner side wall of the annular insulating ring, and sliding holes for slidingly sleeved with the T-shaped slide plates are opened on the silicon steel sheets.

[0007] In a further embodiment, balls are rotatably embedded in the upper and lower side walls of the sliding hole, and the balls are in rolling contact with the T-shaped slide plate.

[0008] In a further embodiment, the T-shaped slide plate is extended obliquely toward the lower side of the annular insulating ring in the axial direction.

[0009] In a further embodiment, the silicon steel sheet is a quarter-circular arc structure, and its height is less than the height of the annular insulating ring.

[0010] In a further embodiment, the upper and lower side walls of the silicon steel sheet are longitudinally extended to a side away from each other.

[0011] In a further embodiment, the adjusting component also includes a transmission seat for rotatably supporting the annular insulating ring, and an inverted L-shaped hanging frame is fixed to the upper end of the side walls on both sides of the iron core, and the transmission seat is fixed on the side wall of the inverted L-shaped hanging frame facing the iron core. A clamping notch is provided on the side wall of the transmission seat facing the iron core, and the upper and lower side walls inside the annular insulating ring are rotatably fitted with the upper and lower side walls inside the clamping notch, and the upper and lower side walls of the clamping notch opening extend toward the side close to each other, with a fitting portion that is rotatably fitted to the inner side wall of the annular insulating ring.

[0012] In a further embodiment, it also includes a transmission rod that provides rotational power for the annular insulating ring, and a through hole for the transmission rod to rotate through the side wall of the inverted L-shaped hanging frame is provided. The end of the transmission rod away from the transmission seat rotates and extends out of the side wall of the transformer box and is connected to the external power end. The transmission seat is provided with a rotation plug-in groove on the side wall facing the inverted L-shaped hanging frame, and the end of the transmission rod rotates and extends into the rotation plug-in groove and is fixed with a gear disk. A rotation groove is provided between the rotation plug-in groove and the clamping notch, and a transmission disk is rotatably provided in the rotation groove, and a tooth groove meshing with the tooth disk is provided on the upper edge of the transmission disk, and the side wall of the edge of the transmission disk rolls and fits with the outer wall of the ring wire insulating ring in the clamping notch.

[0013] In a further embodiment, it also includes an installation skeleton, which includes two sockets respectively clamped on the upper and lower side walls of the iron core, and a threaded sleeve is fixed on the side walls of the two sockets that are away from each other, and the end of the threaded sleeve is threadedly connected to a threaded lifting shaft, and the ends of the two threaded lifting shafts are rotatably connected to push plates, and the threaded lifting shaft is rotated to adjust the threaded lifting shaft along the axial direction of the threaded sleeve, so that the two push plates can be respectively pressed against the upper and lower side walls of the transformer box, which is used to vacate and erect the transformer winding in the transformer box, so that the contact area between the transformer winding and the oil in the transformer box is maximized, which is beneficial to the heat dissipation of the winding, and avoids the large amount of heat energy converted into electrical energy during the operation of the winding, which cannot be dissipated in time and affects the normal operation of the winding.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention allows the silicon steel sheet to reciprocate on the inner wall of the annular insulating ring to adjust the lateral distance from the side wall of the iron core to absorb leakage magnetic flux, thereby solving the problem in the prior art that leakage magnetic flux generates eddy currents on the transformer winding end components, thereby causing the winding end structure to overheat and directly affecting the normal operation of the transformer.

[0016] The present invention utilizes the mounting frame to vacate and mount the transformer winding in the transformer box, that is, two push plates are respectively placed against the upper and lower side walls in the transformer box, so that the transformer winding is in a vacant state, and the contact area between the winding and the oil in the transformer box is maximized, which is beneficial to the heat dissipation of the winding, and avoids a large amount of heat energy converted into heat energy during the operation of the winding, which cannot be dissipated in time and affects the normal operation of the winding, which is beneficial to the heat dissipation of the winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 It is a partial exploded structural cross-sectional view of the transmission shaft and the transmission seat of the present invention;

[0019] Figure 3 It is a schematic structural diagram of a first embodiment of an annular insulating ring of the present invention;

[0020] Figure 4 It is a structural cross-sectional view of a first embodiment of an annular insulating ring of the present invention;

[0021] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0022] Figure 6 It is a schematic structural diagram of a second embodiment of the annular insulating ring of the present invention;

[0023] Figure 7 It is a structural cross-sectional view of a second embodiment of the annular insulating ring of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point B in the middle.

[0025] In the figure: 1. iron core; 2. primary winding; 3. secondary winding; 4. inverted L-shaped lifting frame; 5. transmission rod; 51. gear plate; 6. transmission seat; 61. transmission plate; 7. annular insulating ring; 71. structural part one; 72. T-shaped slide plate; 73. structural part two; 8. holder; 81. threaded sleeve; 82. threaded lifting shaft; 83. push plate. DETAILED DESCRIPTION

[0026] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0027] Embodiment, this embodiment provides a transformer system, including an iron core 1, a primary winding 2 wrapped around the outer wall of one end of the iron core 1, and a secondary winding 3 wrapped around the other end of the iron core 1, the primary winding 2 and the secondary winding 43 form a winding, the primary winding 2 is used for power input, and the secondary winding 3 is used for output, such as Figure 1 As shown, in the prior art, the two windings wound at both ends of the iron core 1 are respectively used to connect to the power input end and the power output end, which is the same as the wiring method of the primary winding 2 and the secondary winding 3. When the primary winding 2 passes through the alternating current, an alternating magnetic flux is generated in the iron core 1. According to the principle of electromagnetic induction, the energy input by the primary winding 2 is transferred to the secondary winding 3 through the iron core 1, thereby realizing the change of voltage.

[0028] Most of the magnetic flux generated by one winding of the existing transformer will be conducted and amplified by the magnetic core to form the main magnetic flux, which will then pass through the other winding. During this process, no matter how the two windings are wound around the magnetic core, there will always be a part of the magnetic flux that does not pass through the magnetic core and becomes a separate leakage magnetic flux. Both windings will generate leakage magnetic flux, which will often generate eddy currents on the transformer winding end components, such as the pull plates and clamps at the transformer winding end. These eddy currents will cause the pull plates and clamps to overheat, directly affecting the normal operation of the transformer. Therefore, this embodiment also includes an adjustment component for reducing leakage magnetic flux, such as Figure 1 As shown, the regulating component includes two annular insulating rings 7 respectively placed outside the primary winding 2 and the secondary winding 3. The radial side wall of the annular insulating ring 7 is provided with a silicon steel sheet for absorbing leakage magnetic flux. Since the silicon steel sheet has a high magnetic permeability, it can effectively reduce the magnetic resistance and improve the efficiency of the transformer. Moreover, the iron loss of the silicon steel sheet is low, which can reduce the energy loss of the transformer during operation. In addition, the mechanical strength of the silicon steel sheet is high, which can ensure the stability and reliability of the transformer during use. Therefore, the annular insulating ring 7 is made to perform fast and slow alternating annular motion, thereby driving the silicon steel sheet to reciprocate and adjust the lateral distance between the inner side wall of the annular insulating ring 7 and the side wall of the iron core 1, so that it leaves the transformer winding for heat dissipation operation and absorbs leakage magnetic flux. At the same time, it solves the problem that the prior art generates eddy currents on the transformer winding end components due to leakage magnetic flux, thereby causing the winding end structure to overheat, which directly affects the normal operation of the transformer.

[0029] The adjustment component also includes a transmission seat 6 for rotationally supporting the annular insulating ring 7. An inverted L-shaped hanging frame 4 is fixed to the upper end of the side walls on both sides of the iron core 1. The transmission seat 6 is fixed on the side wall of the inverted L-shaped hanging frame 4 facing the iron core 1. A clamping notch is provided on the side wall of the transmission seat 6 facing the iron core 1. The upper and lower side walls inside the annular insulating ring 7 are rotationally fitted with the upper and lower side walls inside the clamping notch. The upper and lower side walls of the clamping notch opening extend toward the side close to each other to have a fitting portion that is rotationally fitted with the inner side wall of the annular insulating ring 7. The fitting portion is used as a limiting structure to prevent the annular insulating ring 7 from leaving the clamping notch during rotation without affecting the rotation of the annular insulating ring 7 in the clamping notch. In addition, the upper and lower side walls in the clamping notch are both arc-shaped structures, which can satisfy the annular insulating ring 7 to make a circular motion along the clamping notch, that is, the arc-shaped structure of the upper and lower side walls in the clamping notch coincides with the center of the annular insulating ring 7. Figure 2 As shown, it also includes a transmission rod 5 that provides rotational power for the annular insulating ring 7. A through hole for the transmission rod 5 to rotate and penetrate is provided on the side wall of the inverted L-shaped hanging frame 4. The end of the transmission rod 5 away from the transmission seat 6 rotates and extends out of the side wall of the transformer box and is connected to the external power end. The transmission seat 6 is provided with a rotational plug-in slot on the side wall facing the inverted L-shaped hanging frame 4. The end of the transmission rod 5 rotates and extends into the rotational plug-in slot and is fixed with a toothed disc 51. A rotational slot is provided between the rotational plug-in slot and the clamping notch. A transmission disc 61 is rotatably provided in the rotational slot. The upper edge of the transmission disc 61 is provided with a toothed slot that meshes with the toothed disc 51. The side wall of the edge of the transmission disc 61 rolls and fits with the outer wall of the ring wire insulating ring in the clamping notch. In order to realize automated operation, a power device, such as a motor, is installed on the side wall of the transformer outer box. The motor is fixed on the transformer box. The output end of the motor is connected to the end of the transmission rod 5 extending out of the box, so that the transmission rod 5 has rotational power. The rotation of the transmission rod 5 can drive the toothed disc 51 to rotate in the rotating plug-in groove, and the transmission disc 61 utilizes the tooth groove to rotate and engage with the toothed disc 51, so that the transmission disc 61 drives the annular insulating ring 7 located in the clamping notch to rotate unidirectionally, so that the annular insulating ring 7 forms an annular circular distal trajectory on the outside of the winding.

[0030] However, it should be particularly noted that the annular insulating ring 7 does not contact the winding, and the annular insulating ring 7 can be made of PVC plastic material, insulating ceramic, or other materials with good insulation performance.

[0031] A plurality of T-shaped slide plates 72 are fixed to the inner wall of the annular insulating ring 7, and sliding holes that are slidably connected to the T-shaped slide plates 72 are provided on the silicon steel sheet, and the silicon steel sheet slides along the T-shaped slide plates 72 using the sliding holes. The T-shaped slide plates 72 are also extended and arranged obliquely to the lower side of the axial direction of the annular insulating ring 7. The purpose of this arrangement is to enable the silicon steel sheet to be adjusted to the center of the annular insulating ring 7 using the sliding holes in a static state. The advantage of extending and obliquely the T-shaped slide plates 72 to the lower side of the axial direction of the annular insulating ring 7 is that there is no need to use power equipment to push the silicon steel sheet to reset along the T-shaped slide plates 72 to the center of the annular insulating ring 7 after the annular insulating ring 7 loses power, thus saving costs. This satisfies the requirement that when the annular insulating ring 7 rotates rapidly again, centrifugal force is generated to drive the silicon steel sheet to slide away from the center of the annular insulating ring 7 again along the T-shaped slide plates 72.

[0032] In addition, since the winding and the core 1 are installed in the transformer box filled with oil, the oil must have a certain viscosity. If the inclination angle of the T-shaped slide 72 is too small, after the silicon steel sheet loses the centrifugal force, the sliding force in the inclination direction of the silicon steel sheet is less than the sliding resistance due to the influence of the viscosity of the oil, and the silicon steel sheet will not reset to the center of the circle close to the annular insulating ring 7. Then, during the rapid and satisfactory replacement process of the annular insulating ring 7, the position of the silicon steel sheet from the center of the annular insulating ring 7 does not have a wide range of adjustability, which affects the absorption effect of the leakage magnetic flux. Of course, the inclination angle of the T-shaped slide 72 is not easy to be too large. If it is too large, the resistance of the silicon steel sheet to slide upward along the T-shaped slide 72 is large. At the same time, the sliding of the silicon steel sheet will also be affected by the viscosity of the oil, resulting in a small range of reciprocating adjustment of the silicon steel sheet when the annular insulating ring 7 rotates rapidly, which will also affect the absorption effect of the leakage magnetic flux. In summary, the inclination angle of the T-shaped slide plate 72 here should be within the range of 30-45°, preferably 45°, which can not only satisfy the silicon steel sheet to slide upward along the T-shaped slide plate 72 when subjected to centrifugal force, but also to slide downward along the T-shaped slide plate 72 when the silicon steel sheet loses centrifugal force, thereby minimizing the impact of the viscosity of the oil on the silicon steel sheet.

[0033] like Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the specific process of absorbing leakage magnetic flux is to control the rotation speed of the annular insulating ring 7, and the speed change process is: gradually accelerate from slow speed, then drop from fast speed to slow speed, or even 0 speed, that is, the rotation speed of the annular insulating ring 7 alternates between fast speed and slow speed. It should be noted that the speed of the annular insulating ring 7 is no more than 10km / h at the fastest, which can generate centrifugal force during the rotation process, and the centrifugal force that slides the silicon steel sheet along the T-shaped slide 72 to the outside of the annular insulating ring, so that the silicon steel sheet is away from the center position of the annular insulating ring 7 due to the centrifugal force. After reducing the speed of the annular insulating ring 7, the centrifugal force of the silicon steel sheet gradually decreases or even disappears, and the silicon steel sheet can slide along the center position of the annular insulating ring 7 on the T-shaped slide 72. In this process, the silicon steel sheet can be frequently reciprocated on the side close to and away from the iron core 1, that is, the silicon steel sheet can be close to and away from the corresponding winding adjustment operation during the rotation process, thereby absorbing leakage magnetic flux.

[0034] At the same time, the upper and lower side walls of the sliding hole are both rotatably embedded with balls, and the balls are rollingly fitted with the T-shaped slide plate 72. Figure 5 and Figure 8 As shown, the inner wall of the sliding hole is replaced by a ball bearing to slide and fit with the side wall of the T-shaped slide plate 72, thereby reducing the sliding resistance of the silicon steel sheet along the side wall of the T-shaped slide plate 72. After the silicon steel sheet loses the centrifugal force of rotation, the ball bearing is used to slide down along the corresponding T-shaped slide plate 72 to approach the center of the annular insulating ring 7. When the annular insulating ring 7 rotates rapidly again to generate centrifugal force, the silicon steel sheet can slide up along the corresponding T-shaped slide plate 72 to approach the inner wall of the annular insulating ring 7, thereby reducing the sliding resistance of the silicon steel sheet when sliding to adjust the position.

[0035] In this embodiment, the silicon steel sheet is a structural member 71 of a quarter-circular arc structure, and its height is less than that of the annular insulating ring 7. Figure 3 As shown, while the structural member 71 rotates with the annular insulating ring 7, it can also perform annular and long and short adjustment operations outside the winding distribution position during the alternating speed, thereby achieving the purpose of absorbing a large amount of leakage magnetic flux.

[0036] The silicon steel sheet can also be configured as a structural member 73 with upper and lower side walls extending longitudinally away from each other, such as Figure 6As shown, the second structural member 73 is longitudinally extended and distributed, and can cover the winding height of the winding in the longitudinal direction. When the second structural member 73 rotates with the annular insulating ring 7, it can form a closed annular motion track outside the winding. At the same time, it can also perform annular and far and near adjustment operations outside the winding distribution position during the alternating speed, thereby achieving the purpose of fully absorbing leakage magnetic flux. The silicon steel sheet structure with different results mentioned above can be selected according to the use requirements. When the second structural member 73 with longitudinal extension distribution makes annular motion, its motion track area is larger, covers a wider area, and has a better absorption effect on leakage magnetic flux. When the second structural member 73 rotates, only its side surface contacts with the transformer oil, which can reduce the resistance to rotation. At the same time, the second structural member 73 is placed in a vertical state. When rotating, it can better disturb the transformer oil, which helps the flow of transformer oil inside the transformer box and improves the heat dissipation effect.

[0037] At present, a plurality of metal-structured pillow bars are generally fixedly installed at the bottom of the transformer winding, and the transformer is installed on the pillow bars, and cooling channels are formed between the pillow bars for the circulation of transformer oil. However, since the pillow bars are placed horizontally inside the transformer and are relatively long, the pillow bars will hinder the transformer oil when it circulates, so that the transformer oil can only flow along the length direction of the pillow bars, and the flow direction of the transformer oil is restricted.

[0038] The mounting frame is used to mount the transformer winding, and includes two mounting seats 8 respectively connected to the upper and lower side walls of the core 1. The two mounting seats 8 are fixed with threaded sleeves 81 on the side walls away from each other. The end of the threaded sleeve 81 is threadedly connected with a threaded lifting shaft 82. The ends of the two threaded lifting shafts 82 are rotatably connected with push plates 83. The threaded lifting shaft 82 is rotated to adjust the threaded lifting shaft 82 along the axial direction of the threaded sleeve 81, and the height of the two push plates 83 can be adjusted, so that the two push plates 83 can be respectively pressed against the upper and lower side walls of the transformer box, and the transformer winding is vacated and erected inside the transformer box, so that the contact surface between the transformer winding and the oil in the transformer box is maximized, which is beneficial to the heat dissipation of the winding, and avoids the large amount of heat energy converted from electrical energy during the winding operation, which cannot be dissipated in time and affects the normal operation of the winding. In addition, there is no obstruction structure between the winding and the bottom of the transformer box. When the transformer oil circulates inside the transformer box, the direction of the circulating flow is not restricted, and the heat dissipation effect of the winding is better. Furthermore, due to the provision of the threaded lifting shaft 82 and the threaded sleeve 81, the height of the push plate 83 can be adjusted, and when installing the winding, the height adjustment of the winding is more flexible.

[0039] When installing the winding, the height of the push plate 83 is determined according to the height of the transformer box and the height of the winding. First, the threaded lifting shaft 82 and the threaded sleeve 81 at the bottom are rotated so that the winding is just located at the center of the transformer box, thereby determining the height of the bottom push plate 83. The winding can then be hoisted into the transformer box and the push plate 83 is fixed. The upper push plate 83 can then be rotated so that the upper push plate 83 is just flush with the top opening of the box, and the position of the upper push plate 83 can be determined (the position of the upper push plate 83 can also be slightly higher than the opening of the box, such as 1-2 mm higher), and then the box cover can be installed and closed on the box. The box cover will provide downward pressure on the upper push plate 83, that is, the transformer box and the box cover have a squeezing force on the upper and lower push plates 83, so that the transformer is placed more stably in the box.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer system, comprising an iron core (1), a primary winding (2) wrapped around an outer wall of one end of the iron core (1), a secondary winding (3) wrapped around the other end of the iron core (1), and an adjustment component for reducing magnetic leakage, wherein the primary winding (2) is an input voltage and the secondary winding (3) is an output voltage, and is characterized in that: The regulating component comprises two annular insulating rings (7) respectively arranged outside the primary winding (2) and the secondary winding (3); the radial side walls of the annular insulating rings (7) are provided with silicon steel sheets for absorbing magnetic leakage; the annular insulating rings (7) perform fast and slow alternating annular motion trajectories; the silicon steel sheets can reciprocate on the inner side walls of the annular insulating rings (7) to adjust the lateral distance from the side walls of the iron core (1) to absorb magnetic leakage; A plurality of T-shaped slide plates (72) are fixed to the inner side wall of the annular insulating ring (7), and a sliding hole for slidingly sleeved with the T-shaped slide plates (72) is provided on the silicon steel sheet; The upper and lower side walls of the sliding hole are both rotatably embedded with balls, and the balls are in rolling contact with the T-shaped slide plate (72); The T-shaped slide plate (72) is arranged to extend obliquely toward the lower side of the annular insulating ring (7) in the axial direction.

2. The transformer system according to claim 1, characterized in that: The silicon steel sheet is a structural member (71) of a quarter-circular arc structure, and its height is less than the height of the annular insulating ring (7).

3. The transformer system according to claim 2, characterized in that: The silicon steel sheet is a second structural member (73) whose upper and lower side walls are longitudinally extended to a side away from each other.

4. The transformer system according to claim 1, characterized in that: The adjustment component also includes a transmission seat (6) for rotatably supporting the annular insulating ring (7), an inverted L-shaped hanging frame (4) is fixed to the upper ends of the side walls on both sides of the iron core (1), the transmission seat (6) is fixed to the side wall of the inverted L-shaped hanging frame (4) facing the iron core (1), a clamping notch is opened on the side wall of the transmission seat (6) facing the iron core (1), the upper and lower side walls inside the annular insulating ring (7) are rotatably fitted with the upper and lower side walls inside the clamping notch, and the upper and lower side walls of the clamping notch opening extend toward the side close to each other to form a fitting portion that is rotatably fitted to the inner side wall of the annular insulating ring (7).

5. The transformer system according to claim 4, characterized in that: It also includes a transmission rod (5) for providing rotational power for the annular insulating ring (7); a through hole for the transmission rod (5) to rotate and penetrate is provided on the side wall of the inverted L-shaped hanging frame (4); one end of the transmission rod (5) away from the transmission seat (6) is rotated to extend out of the side wall of the transformer box and is connected to an external power end; a rotational plug-in slot is provided on the side wall of the transmission seat (6) facing the inverted L-shaped hanging frame (4); the end of the transmission rod (5) is rotated to extend into the rotational plug-in slot and is fixed with a toothed disc (51); a rotational slot is provided between the rotational plug-in slot and the clamping notch; a transmission disc (61) is rotatably provided in the rotational slot; a toothed slot meshing with the toothed disc (51) is provided on the upper edge of the transmission disc (61); and the side wall of the edge of the transmission disc (61) is rollingly fitted with the outer wall of the ring wire insulating ring in the clamping notch.

6. The transformer system according to claim 4, characterized in that: The invention also comprises a mounting frame, the mounting frame comprising two mounting seats (8) respectively mounted on the upper and lower side walls of the iron core (1), a threaded sleeve (81) being fixed on the side walls of the two mounting seats (8) which are away from each other, the end of the threaded sleeve (81) being threadedly connected to a threaded lifting shaft (82), the ends of the two threaded lifting shafts (82) being rotatably connected to push plates (83), the two push plates (83) being respectively able to abut against the upper and lower side walls of the transformer box, and being used for vacating and mounting the transformer winding in the transformer box.

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