A high-heat-dissipation low-loss transformer winding structure

Abstract

This invention discloses a high-heat-dissipation, low-loss transformer winding structure, relating to the field of power transmission and distribution and transformer equipment. It includes a high-voltage winding, a low-voltage winding, an air duct, and a support block. A mounting base is provided above the air duct, which includes a connecting ring mounted on the low-voltage winding. The outer wall of the connecting ring has a limiting groove that mates with the support block. This invention, through a combination of a detachable cover, dustproof mesh, and heat dissipation vent, automatically blocks the top of the air duct under natural transformer cooling conditions, completely solving the problems of dust accumulation, blockage, and reduced heat dissipation efficiency associated with open air ducts in traditional windings. It effectively maintains unobstructed airflow, reduces temperature rise and losses, and improves the transformer's operational stability and service life. During forced air cooling, the heat dissipation vent automatically opens to increase ventilation, and automatically resets the dustproof mesh after air cooling stops. This allows for free switching between dust protection and efficient heat dissipation without manual operation, adaptively matching the heat dissipation requirements of different operating conditions, and balancing dust protection and forced air cooling effects.

Description

Technical Field

[0001] This invention relates to the field of power transmission and distribution and transformer equipment, specifically to a transformer winding structure with high heat dissipation and low loss. Background Technology

[0002] In the field of power transmission and distribution and transformer equipment, dry-type transformers are widely used in power distribution scenarios with high fire protection requirements, such as high-rise buildings, factories, shopping malls, and computer rooms, due to their advantages such as fire and explosion protection, safe operation, and easy maintenance. The core components of dry-type transformers are high-voltage and low-voltage windings, and their heat dissipation efficiency directly determines the transformer's load capacity, temperature rise index, and service life.

[0003] Existing high-heat-dissipation and low-loss dry-type transformer windings mainly consist of high-voltage windings, low-voltage windings, iron cores, and support structures. To improve heat dissipation capacity, multiple sets of axial air ducts are usually opened on both the high-voltage and low-voltage windings. A certain gap is reserved between the high-voltage and low-voltage windings to form the main heat dissipation air duct. During operation, the heat generated by the windings is discharged to the outside through the air ducts and air duct holes by relying on natural air convection and forced air cooling by fans. This structure can meet the heat dissipation requirements under normal operating conditions and is currently the mainstream design scheme for high-heat-dissipation and low-loss transformers.

[0004] However, the air passages between high and low voltage windings and the tops of the air passage holes on the windings are mostly open designs. During long-term operation, dust, fibers, airborne particles and other debris in the environment will continuously settle and invade the interior of the air passages and air passage holes, gradually adhering to and accumulating on the winding surface and the inner wall of the air passages, forming a dust layer. Dust accumulation will significantly reduce airflow efficiency and heat exchange effect, resulting in a decrease in the transformer's heat dissipation capacity and an increase in operating temperature. This not only increases transformer losses but also accelerates insulation aging, reducing equipment operational stability and service life. Summary of the Invention

[0005] The purpose of this invention is to provide a high-heat-dissipation, low-loss transformer winding structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-heat-dissipation, low-loss transformer winding structure, comprising a high-voltage winding, a low-voltage winding, an air duct, and a support block. A mounting base is provided above the air duct, which includes a connecting ring mounted on the low-voltage winding. The outer wall of the connecting ring has a limiting groove that cooperates with the support block. A connecting seat is also mounted on the outer wall of the connecting ring. The middle part of the connecting seat has a through groove corresponding to the air duct. A detachable cover that is connected to the connecting seat is slidably provided on the outer wall of the connecting ring. A heat dissipation vent is provided on the outer wall of the detachable cover. Locking devices are provided on the detachable cover and the connecting seat. The detachable cover has a sliding bracket slidably installed on its outer wall, and the outer wall of the sliding bracket is provided with a dustproof net that matches the heat dissipation vent. The outer side of the connecting seat is provided with a lifter that pushes the sliding bracket upward.

[0007] Preferably, the bottom of the connecting ring is fitted with a plug that is in contact with the inner wall of the low-voltage winding, and the plane at the top of the connecting ring is lower than the plane at the top of the support block, and multiple connecting seats are installed at equal angles on the outer wall of the connecting ring.

[0008] Preferably, the limiting grooves are provided at equal angles on the outer wall of the connecting ring, and the top opening of the limiting grooves is arc-shaped, and the bottom surface of the limiting grooves is in contact with the bottom surface of the end of the support block; the connecting seat has a fan-shaped cross-section, the connecting seat is connected to the outer wall of the connecting ring by bolts, and the bottom of the connecting seat is in contact with the top of the high voltage winding and the low voltage winding, and the outer walls on both sides of the connecting seat are in contact with the corresponding outer walls of the support block.

[0009] Preferably, multiple sets of sliding blocks are installed at equal angles on the outer wall of the connecting ring, the thickness of the detachable cover near the connecting ring is less than the thickness of its outer side, and a sliding frame that slides in connection with the sliding blocks is installed on the inner wall of the outer side of the detachable cover; a convex frame that mates with the connecting seat is installed at the bottom of the detachable cover, and a slot is provided on the outer side of the convex frame; a locking block that mates with the slot is installed on the inner wall of the connecting seat, and after the detachable cover is installed on the connecting ring, the slot and the locking block engage to restrict the longitudinal position of the outer side of the detachable cover.

[0010] Preferably, the locking device is symmetrically provided in two sets on the removable cover. The locking device includes a rod that is slidably installed in the bottom of the removable cover and a hole that is opened on the outside of the connecting seat and cooperates with the rod. The top of the rod is connected to a pressure spring installed in the removable cover. An unlocking block is slidably installed on the outside of the removable cover, and a transmission frame connected to the unlocking block is slidably installed in the removable cover. A return spring connected to the transmission frame is installed in the removable cover. A pull rope connected to the top of the rod is installed on the side wall of the transmission frame.

[0011] Preferably, the distance between the outer wall of the unlocking block and the outer wall of the connecting ring is greater than 25 mm, the outer wall of the unlocking block is designed to slope downward, and the thickness of the top of the unlocking block is greater than the thickness of its bottom.

[0012] Preferably, the lifting device includes a transmission wheel rotatably mounted on the outer wall of the sliding frame and a linkage ring rotatably mounted on the outer wall of the connecting seat. The top of the linkage ring is equipped with an inclined guide block that cooperates with the linkage ring. A motor is mounted on the outer wall of the connecting seat, and a gear is mounted on the end of the motor. The inner wall of the linkage ring is provided with a tooth groove that cooperates with the gear.

[0013] Preferably, multiple inclined guide blocks are provided at equal angles on the top of the linkage ring, and the outer wall of the inclined guide block that is in contact with the transmission wheel is designed with an inclined surface, and the bottom end of the transmission wheel protrudes from the bottom surface of the sliding frame.

[0014] Preferably, the inclined guide block is located outside the detachable cover. When forced air cooling is not performed, the position of the detachable cover is offset from the position of the inclined guide block, and the bottom surface of the detachable cover is located above the linkage ring, and the linkage ring is located outside the support block.

[0015] Preferably, the connecting ring, the plug, and the connecting seat near the top copper busbar of the low-voltage winding are all provided with notches that are offset from the copper busbar.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through a combination structure of a detachable cover, dustproof net, and heat dissipation vent, automatically blocks the top of the air passage when the transformer is in a natural cooling state, completely solving the problems of dust accumulation, blockage, and reduced heat dissipation efficiency caused by open air passages in traditional windings. It effectively keeps the air passage unobstructed, reduces temperature rise and losses, and improves the operating stability and service life of the transformer. When forced air cooling is used, the heat dissipation vent automatically opens to increase the ventilation volume, and automatically resets the dustproof net after the air cooling stops. It achieves free switching between dust protection and efficient heat dissipation without manual operation, adaptively matches the heat dissipation requirements of different operating conditions, and takes into account both dust protection and forced air cooling effect.

[0017] 2. This invention achieves a seamless and mutually exclusive design by matching the connecting ring, limiting groove, connecting seat, support block, and copper busbar. All components are installed without interference and are precisely positioned, ensuring that the strength of the winding structure is not affected and that assembly can be completed quickly. The installation is convenient, secure, and does not wobble. It is also equipped with a one-button unlocking lock, which allows for quick removal of the removable cover by pressing, exposing the top of the winding and the air passage for easy periodic inspection, cleaning, and maintenance. No special tools are required for disassembly and assembly, significantly reducing the difficulty and workload of later maintenance. At the same time, the removable cover is firmly installed, does not shift, and does not loosen, ensuring high long-term operational stability. In addition, the dustproof net is removable for cleaning, and the overall structure is durable and easy to maintain.

[0018] 3. The invention integrates five major functions: dust prevention, heat dissipation, adjustable airflow, quick disassembly and assembly, and convenient maintenance. It does not change the original winding structure and is suitable for upgrading and transforming various dry-type transformers. While improving heat dissipation efficiency, it significantly reduces dust accumulation loss and truly achieves high heat dissipation and low loss operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention after it is assembled onto a transformer; Figure 2 This is a schematic diagram of the structure of the top of the high-voltage winding and the low-voltage winding of the present invention; Figure 3 This is a schematic diagram of the disassembled components in this invention; Figure 4 This is a schematic diagram of the mounting base and detachable cover of the present invention; Figure 5 This is a schematic diagram of the structure of the connector of the present invention; Figure 6 This is a schematic diagram of the detachable cover of the present invention; Figure 7 This is a schematic diagram of the locking device of the present invention; Figure 8 For the present invention Figure 3 A magnified structural diagram of point A in the middle; Figure 9 This is a schematic diagram of the structure of the sliding bracket after it has been moved upwards according to the present invention.

[0020] In the diagram: 1. High-voltage winding; 2. Low-voltage winding; 20. Copper busbar; 3. Air duct; 4. Support block; 5. Mounting base; 51. Connecting ring; 52. Insert block; 53. Limiting groove; 54. Connecting seat; 55. Through groove; 6. Removable cover; 61. Sliding block; 62. Sliding frame; 63. Protruding frame; 64. Slot; 65. Locking block; 7. Heat dissipation vent; 8. Locking device; 81. Insert rod; 82. Insertion hole; 83. Downward pressure spring; 84. Unlocking block; 85. Transmission frame; 86. Return spring; 87. Pull rope; 9. Sliding frame; 91. Dustproof net; 10. Lifter; 101. Transmission wheel; 102. Linkage ring; 103. Inclined guide block; 104. Motor; 105. Gear; 11. Notch. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-9 The present invention provides the following technical solution: a high heat dissipation and low loss transformer winding structure, including a high voltage winding 1, a low voltage winding 2, an air duct 3 and a support block 4. A mounting base 5 is provided above the air duct 3, which includes a connecting ring 51 mounted on the low voltage winding 2. The outer wall of the connecting ring 51 is provided with a limiting groove 53 that cooperates with the support block 4. A connecting seat 54 is also installed on the outer wall of the connecting ring 51. The middle part of the connecting seat 54 is provided with a through groove 55 corresponding to the air duct 3. A detachable cover 6 connected to the connecting seat 54 is slidably mounted on the outer wall of the connecting ring 51. A heat dissipation port 7 is provided on the outer wall of the detachable cover 6. A locking device 8 is provided on the detachable cover 6 and the connecting seat 54. A sliding bracket 9 is slidably mounted on the outer wall of the detachable cover 6. A dustproof net 91 that cooperates with the heat dissipation port 7 is provided on the outer side of the connecting seat 54. A lifter 10 that pushes the sliding bracket 9 upward is provided on the outer side of the connecting seat 54.

[0023] In one embodiment of the present invention, a plug 52 is installed at the bottom of the connecting ring 51 and is in contact with the inner wall of the low-voltage winding 2. The plane at the top of the connecting ring 51 is lower than the plane at the top of the support block 4. Multiple connecting seats 54 are installed at equal angles on the outer wall of the connecting ring 51. Multiple limiting grooves 53 are opened at equal angles on the outer wall of the connecting ring 51. The top opening of the limiting groove 53 is arc-shaped. The opening position of the limiting groove 53 is offset from the installation position of the connecting seat 54. At the same time, the bottom surface of the limiting groove 53 is in contact with the bottom surface of the end of the support block 4. During the installation of the support block 4, its end will be limited by the longitudinal position of the connecting ring 51 through the limiting groove 53. The connecting seat 54 has a fan-shaped cross-section. The connecting seat 54 is connected to the outer wall of the connecting ring 51 by bolts. The bottom of the connecting seat 54 is in contact with the top of the high voltage winding 1 and the low voltage winding 2. The outer walls on both sides of the connecting seat 54 are in contact with the outer walls of the corresponding support blocks 4. The connecting ring 51 and the insert block 52 are positioned by inner wall contact. The limiting groove 53 quickly locks the support block 4. The fan-shaped connecting seat 54 facilitates the subsequent disassembly and assembly of the removable cover 6. The overall assembly accuracy is high and the positioning is reliable.

[0024] In one embodiment of the present invention, multiple sets of sliding blocks 61 are installed at equal angles on the outer wall of the connecting ring 51. The thickness of the detachable cover 6 on the side near the connecting ring 51 is less than the thickness on its outer side. A sliding frame 62 that is slidably connected to the sliding blocks 61 is installed on the inner wall of the outer side of the detachable cover 6. A protruding frame 63 that cooperates with the connecting seat 54 is installed at the bottom of the detachable cover 6. A slot 64 is opened on the outer side of the protruding frame 63. A locking block 65 that cooperates with the slot 64 is installed on the inner wall of the connecting seat 54. After the detachable cover 6 is installed on the connecting ring 51, the slot 64 and the locking block 65 are engaged to limit the longitudinal position of the outer side of the detachable cover 6. The sliding block 61 and the sliding frame 62 work together to achieve horizontal guidance of the detachable cover 6, and the slot 64 and the block 65 achieve longitudinal limiting, ensuring accurate installation and positioning and preventing shaking or deviation.

[0025] In one embodiment of the present invention, two sets of locking devices 8 are symmetrically arranged on the removable cover 6. The locking device 8 includes a rod 81 slidably installed in the bottom of the removable cover 6 and a hole 82 opened on the outside of the connecting seat 54 and cooperating with the rod 81. The top of the rod 81 is connected to a compression spring 83 installed in the removable cover 6. An unlocking block 84 is slidably installed on the outside of the removable cover 6. A transmission frame 85 connected to the unlocking block 84 is slidably installed in the removable cover 6. A return spring 86 connected to the transmission frame 85 is installed in the removable cover 6. A pull rope 87 connected to the top of the rod 81 is installed on the side wall of the transmission frame 85. The distance between the outer wall of the unlocking block 84 and the outer wall of the connecting ring 51 is greater than 25 mm. The outer wall of the unlocking block 84 is designed to slope downward. The thickness of the top of the unlocking block 84 is greater than the thickness of its bottom. Pressing the unlocking block 84 unlocks the device by pulling the cord 87 to lift the rod 81. Releasing the cord locks the device automatically. The operation is simple, requires no tools, and is highly efficient in disassembly and assembly.

[0026] In one embodiment of the present invention, the lifting device 10 includes a transmission wheel 101 rotatably mounted on the outer wall of the sliding frame 9 and a linkage ring 102 rotatably mounted on the outer wall of the connecting seat 54. The top of the linkage ring 102 is equipped with an inclined guide block 103 that cooperates with the linkage ring 102. The outer wall of the connecting seat 54 is equipped with a motor 104, and the end of the motor 104 is equipped with a gear 105. The inner wall of the linkage ring 102 is provided with a tooth groove that cooperates with the gear 105. Multiple inclined guide blocks 103 are provided at equal angles on the top of the linkage ring 102. The outer wall of the inclined guide block 103 that is in contact with the transmission wheel 101 is designed with an inclined surface, and the bottom end of the transmission wheel 101 protrudes from the bottom surface of the sliding frame 9. The inclined guide block 103 is located outside the detachable cover 6. When forced air cooling is not performed, the position of the removable cover 6 is offset from the position of the inclined guide block 103, and the bottom surface of the removable cover 6 is located above the linkage ring 102. The linkage ring 102 is located outside the support block 4 throughout the entire process. When forced air cooling is required, the motor 104 drives the linkage ring 102 to rotate, and the inclined guide block 103 pushes the transmission wheel 101 to drive the sliding frame 9 to rise and fall, so as to realize the automatic opening and closing of the heat dissipation port 7 and the automatic switching between dust prevention and heat dissipation.

[0027] As one embodiment of the present invention, the connecting ring 51, the plug 52 and the connecting seat 54 near the top copper busbar 20 of the low voltage winding 2 are all provided with notches 11 that are offset from the copper busbar 20. The notch 11 allows the copper busbar 20 to be avoided, preventing interference and ensuring safe winding and smooth assembly.

[0028] Working principle: When assembling this high heat dissipation and low loss transformer winding structure, first place the bottom support block 4 in the designed position, then hoist the high voltage winding 1 and low voltage winding 2 to the designated position and complete the positioning, and then perform the assembly operation of the mounting base 5 and the detachable cover 6. When assembling the mounting base 5, first insert the connecting ring 51, which is pre-installed with multiple connecting seats 54, into the top of the low-voltage winding 2. The connecting ring 51, the insert block 52, and the corresponding connecting seat 54 are all provided with notches 11, which can effectively avoid the copper busbar 20 on the top of the low-voltage winding 2 and ensure that the connecting ring 51 is smoothly installed. After installation, the outer wall of the insert block 52 at the bottom of the connecting ring 51 is tightly fitted with the inner wall of the low-voltage winding 2 to achieve radial positioning. At the same time, the bottom of the connecting seat 54 is simultaneously fitted with the top surface of the low-voltage winding 2 and the top surface of the high-voltage winding 1 to form a stable support. The top support block 4 can be directly placed between adjacent connecting seats 54, and the end automatically falls into the limiting groove 53 on the outer wall of the connecting ring 51 to achieve quick positioning and limiting, which facilitates the installation and alignment of the top support block 4. When installing the removable cover 6, first place the removable cover 6 with the pre-installed sliding bracket 9 above the connecting seat 54, and align the sliding frame 62 on the inner side of the removable cover 6 with the sliding block 61 on the outer wall of the connecting ring 51; then press the unlocking block 84 on the outer side of the removable cover 6, the unlocking block 84 pushes the transmission frame 85 to move and squeezes the reset spring 86, the transmission frame 85 pulls the plug rod 81 upward through the pull rope 87, compresses the pressing spring 83, and causes the bottom end of the plug rod 81 to retract into the removable cover 6, switching to the unlocked state; While holding the unlocking block 84 down, push the removable cover 6 along the sliding block 61 toward the connecting ring 51 until the outer wall of the bottom protrusion 63 of the removable cover 6 is in contact with the inner wall of the connecting seat 54. At this time, the insertion rod 81 is aligned with the insertion hole 82 on the outside of the connecting seat 54. Release the unlocking block 84, the reset spring 86 pushes the transmission frame 85 to reset, and the tension of the pull rope 87 disappears. At this time, the insertion rod 81 extends downward into the insertion hole 82 under the elastic force of the pressing spring 83, locking the removable cover 6 and the connecting seat 54 laterally. During the sliding process of the removable cover 6, the slot 64 will gradually approach the connecting seat 54. When the removable cover 6 slides into place, the locking block 65 on the inner wall of the connecting seat 54 will engage with the slot 64 on the outer side of the protruding frame 63, thus restricting the longitudinal position of the outer side of the removable cover 6. This results in the removable cover 6 being limited by the sliding block 61 and the sliding frame 62 on the inner side, by the slot 64 and the locking block 65 on the outer side, and by the insertion rod 81 and the insertion hole 82 at the bottom. This triple positioning ensures that the removable cover 6 is installed firmly, without loosening or shifting. When the transformer is normally idle, naturally cooled, or the fan is not turned on, the sliding frame 9 is in the lowest position under its own weight and is covered on the outside of the removable cover 6. The dustproof net 91 on the sliding frame 9 completely covers the heat dissipation opening 7, effectively preventing dust, fibers, floating objects and other debris in the environment from entering the interior of the removable cover 6 through the heat dissipation opening 7, avoiding debris from falling into the air passage 3 and causing blockage, effectively improving the cleanliness of the air passage inside the winding, smooth ventilation, and reducing heat dissipation loss. When the temperature control system or sensor detects that the winding temperature is too high and the fan needs to be turned on for forced air cooling, the motor 104 will also start synchronously. It will drive the linkage ring 102 to rotate through the gear 105 meshing with the tooth groove on the inner wall of the linkage ring 102. This causes the multiple inclined guide blocks 103 at the top of the linkage ring 102 to rotate synchronously. Their inclined surfaces contact the transmission wheel 101 at the bottom of the sliding frame 9 and press upward, pushing the transmission wheel 101 and the sliding frame 9 to slide upward along the outer wall of the detachable cover 6, so that the heat dissipation vent 7 is fully exposed, increasing the ventilation area and improving the forced air cooling efficiency. After the forced air cooling is completed, the motor 104 drives the gear 105 to reverse, the inclined guide block 103 rotates back to the initial position, the upward thrust on the transmission wheel 101 disappears, and the sliding bracket 9 resets downward under its own gravity, covering the heat dissipation port 7 again and restoring the dustproof state. When it is necessary to inspect, maintain or clean the inside of the high voltage winding 1 and the low voltage winding 2, simply press the unlocking block 84 to separate the plug rod 81 from the plug hole 82, and then pull the removable cover 6 outward to remove it as a whole, exposing the top of the high voltage winding 1 and the low voltage winding 2 for easy inspection, cleaning and observation. After the inspection is completed, the removable cover 6 can be reinstalled according to the above installation steps. No special tools are required for the disassembly and assembly process, and the operation is simple and quick.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-heat-dissipation, low-loss transformer winding structure, comprising a high-voltage winding (1), a low-voltage winding (2), an air duct (3), and a support block (4), characterized in that: An installation base (5) is provided above the air passage hole (3), which includes a connecting ring (51) installed on the low voltage winding (2), and a limiting groove (53) that cooperates with the support block (4) is opened on the outer wall of the connecting ring (51). A connecting seat (54) is also installed on the outer wall of the connecting ring (51). A through groove (55) corresponding to the air passage hole (3) is provided in the middle of the connecting seat (54). A detachable cover (6) connected to the connecting seat (54) is slidably provided on the outer wall of the connecting ring (51), and a heat dissipation port (7) is opened on the outer wall of the detachable cover (6). A locking device (8) is provided on the detachable cover (6) and the connecting seat (54). The outer wall of the detachable cover (6) is slidably fitted with a sliding bracket (9), and the outer wall of the sliding bracket (9) is provided with a dustproof net (91) that cooperates with the heat dissipation port (7). The outer side of the connecting seat (54) is provided with a lifter (10) that pushes the sliding bracket (9) upward.

2. The high heat dissipation and low loss transformer winding structure according to claim 1, characterized in that: The bottom of the connecting ring (51) is fitted with a plug (52) that is in contact with the inner wall of the low voltage winding (2), and the plane at the top of the connecting ring (51) is lower than the plane at the top of the support block (4), and multiple connecting seats (54) are installed at equal angles on the outer wall of the connecting ring (51).

3. The high heat dissipation and low loss transformer winding structure according to claim 2, characterized in that: The limiting groove (53) is provided at multiple angles on the outer wall of the connecting ring (51), and the top opening of the limiting groove (53) is arc-shaped, and the bottom surface of the limiting groove (53) is in contact with the bottom surface of the end of the support block (4). The connecting seat (54) has a fan-shaped cross section. The connecting seat (54) is connected to the outer wall of the connecting ring (51) by bolts. The bottom of the connecting seat (54) is in contact with the top of the high voltage winding (1) and the low voltage winding (2). The outer walls on both sides of the connecting seat (54) are in contact with the outer walls of the corresponding support blocks (4).

4. The high heat dissipation and low loss transformer winding structure according to claim 3, characterized in that: Multiple sets of sliding blocks (61) are installed at equal angles on the outer wall of the connecting ring (51). The thickness of the detachable cover (6) on the side near the connecting ring (51) is less than the thickness on its outer side. A sliding frame (62) that is slidably connected to the sliding block (61) is installed on the inner wall of the outer side of the detachable cover (6). The bottom of the detachable cover (6) is equipped with a protruding frame (63) that cooperates with the connecting seat (54), and a slot (64) is provided on the outer side of the protruding frame (63). The inner wall of the connecting seat (54) is equipped with a locking block (65) that cooperates with the slot (64). After the detachable cover (6) is installed on the connecting ring (51), the slot (64) and the locking block (65) engage to restrict the longitudinal position of the outer side of the detachable cover (6).

5. The high heat dissipation and low loss transformer winding structure according to claim 1, characterized in that: The locking device (8) is symmetrically provided in two sets on the removable cover (6). The locking device (8) includes a plug rod (81) slidably installed in the bottom of the removable cover (6) and a plug hole (82) opened on the outside of the connecting seat (54) and cooperating with the plug rod (81). The top of the plug rod (81) is connected to a pressure spring (83) installed in the removable cover (6). The outer side of the removable cover (6) is slidably installed with an unlocking block (84). The removable cover (6) is slidably installed with a transmission frame (85) connected to the unlocking block (84). The removable cover (6) is installed with a return spring (86) connected to the transmission frame (85). The side wall of the transmission frame (85) is installed with a pull rope (87) connected to the top of the plug rod (81).

6. The high heat dissipation and low loss transformer winding structure according to claim 5, characterized in that: The distance between the outer wall of the unlocking block (84) and the outer wall of the connecting ring (51) is greater than 25 mm, and the outer wall of the unlocking block (84) is designed to be inclined downward, and the top thickness of the unlocking block (84) is greater than its bottom thickness.

7. The high heat dissipation and low loss transformer winding structure according to claim 1, characterized in that: The lifting device (10) includes a transmission wheel (101) rotatably mounted on the outer wall of the sliding frame (9) and a linkage ring (102) rotatably mounted on the outer wall of the connecting seat (54). The top of the linkage ring (102) is equipped with an inclined guide block (103) that cooperates with the linkage ring (102). The outer wall of the connecting seat (54) is equipped with a motor (104) and a gear (105) is installed at the end of the motor (104). The inner wall of the linkage ring (102) is provided with a tooth groove that cooperates with the gear (105).

8. The high heat dissipation and low loss transformer winding structure according to claim 7, characterized in that: Multiple inclined guide blocks (103) are provided at equal angles on the top of the linkage ring (102), and the outer wall of the inclined guide block (103) that is in contact with the transmission wheel (101) is designed with an inclined surface, and the bottom end of the transmission wheel (101) protrudes from the bottom surface of the sliding frame (9).

9. The high heat dissipation and low loss transformer winding structure according to claim 8, characterized in that: The inclined guide block (103) is located outside the detachable cover (6). When forced air cooling is not performed, the position of the detachable cover (6) is offset from the position of the inclined guide block (103), and the bottom surface of the detachable cover (6) is located above the linkage ring (102), and the linkage ring (102) is located outside the support block (4).

10. The high heat dissipation and low loss transformer winding structure according to claim 2, characterized in that: The connecting ring (51), the plug (52) and the connecting seat (54) near the top copper busbar (20) of the low voltage winding (2) are all provided with notches (11) that are offset from the copper busbar (20).

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