Energy-saving high-voltage transformer

Abstract

The invention discloses an energy-saving high-voltage transformer, which relates to the technical field of transformers, and comprises a transformer main body, the outer wall of the transformer main body is provided with a radiator for radiating insulating oil in the transformer main body; the radiator comprises an upper oil pipe connected to the side wall of the upper portion of the transformer body, a lower oil pipe connected to the side wall of the lower portion of the transformer body and a plurality of cooling fins connected between the upper oil pipe and the lower oil pipe, and each cooling fin comprises a main fin connected between the upper oil pipe and the lower oil pipe and internally provided with a flow channel communicated with the upper oil pipe and the lower oil pipe; the flexible connecting part is connected to the side wall of the main fin in the length direction, and the side, away from the main fin, of the flexible connecting part is connected with an auxiliary fin. The heat dissipation area can be flexibly adjusted according to the actual heat production condition of the transformer, when the load of the transformer is low and heat is little, the included angle between the auxiliary fins and the main fins is reduced, insulating oil only circulates in the main fins, the heat dissipation area is reduced, and unnecessary heat dissipation energy consumption is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to an energy-saving high-voltage transformer. Background Art

[0002] In modern power grid architectures, transformers are key hubs for achieving voltage conversion and efficient power transmission. Their reliable operation is directly linked to the stability and safety of the entire power system. When load current flows through the transformer windings, Joule heating is inevitably generated due to the winding resistance, causing the transformer temperature to continue to rise. If this heat cannot be dissipated promptly and effectively, it will lead to problems such as degraded transformer insulation performance and accelerated component aging. This not only seriously threatens the continuity of power supply, but may also cause major safety accidents such as fires due to overheating. Therefore, building an efficient and reliable heat dissipation system has become a core requirement for ensuring the safe and stable operation of transformers.

[0003] As the core component of transformer heat dissipation, the transformer radiator transfers the large amount of heat generated during transformer operation to the surrounding environment. The current mainstream transformer radiator is mainly composed of two oil pipes and a set of heat sinks tightly connected between the two oil pipes. During operation, the transformer oil flows in from the oil inlet pipe and meanders along the flow path in the heat sink. During this process, the hot oil and the heat sink undergo sufficient heat exchange, efficiently transferring the heat carried to the surface of the heat sink. The cooled transformer oil then flows back to the transformer through the oil outlet pipe, completing a complete heat dissipation cycle and continuously protecting the operation of the transformer.

[0004] However, existing transformers have exposed many problems that need to be solved in practical applications:

[0005] First, the heat sink structure design is relatively fixed, resulting in the inability to flexibly adjust the overall heat dissipation area of the radiator. Once the transformer load increases and heat generation increases, the heat dissipation demand can only be met by increasing the oil pump speed and the number of transformer oil circulations, which undoubtedly significantly increases the operating time and energy consumption of the oil pump.

[0006] Secondly, the traditional radiator is installed in a fixed position. With long-term continuous heat dissipation, the surrounding air is continuously heated, and the hot air is difficult to diffuse quickly. It gradually accumulates around the radiator to form a high-temperature area, which seriously deteriorates the heat dissipation environment and weakens the heat dissipation efficiency.

[0007] In view of this, this application is hereby filed. Summary of the Invention

[0008] The object of the present invention is to provide an energy-saving high-voltage transformer to solve the problems raised in the above background technology.

[0009] In order to solve the above technical problems, the present invention provides an energy-saving high-voltage transformer, comprising a transformer body, on the outer wall of which is mounted a radiator for dissipating heat from the insulating oil inside the transformer body, the radiator comprising an upper oil pipe connected to the upper side wall of the transformer body, a lower oil pipe connected to the lower side wall of the transformer body, and a plurality of heat sinks connected between the upper and lower oil pipes, the heat sinks comprising:

[0010] The main fin is connected between the upper oil pipe and the lower oil pipe, and is provided with a flow channel communicating with the upper oil pipe and the lower oil pipe;

[0011] The flexible connection part is connected to the side wall of the main fin in the longitudinal direction, and the auxiliary fin is connected to the side away from the main fin. The oil storage cavity is provided inside the flexible connection part and the auxiliary fin;

[0012] When the angle between the auxiliary fin and the main fin is greater than 90°, the oil containing cavity is connected to the flow channel, and the insulating oil can flow in the main fin and the auxiliary fin. When the angle between the auxiliary fin and the main fin is less than 90°, the oil containing cavity is not connected to the flow channel, and the insulating oil can only flow in the main fin. The radiator is also provided with a driving component for driving the auxiliary fin to rotate to adjust the angle between it and the main fin.

[0013] Furthermore, the driving component includes an active member and a driven member, and the active member includes:

[0014] A transformer tube connected to the upper oil pipe comprises an inlet section, a contraction section, a throat and a diffusion section, wherein the side walls of the inlet section and the throat are respectively provided with a first outlet and a second outlet extending outward;

[0015] A piston member is provided on the outer wall of the transformer body, and includes a piston cylinder, a piston plate, a piston rod, and a return spring; the piston plate is slidably connected to the interior of the piston cylinder, and the piston plate divides the interior of the piston cylinder into a first cavity and a second cavity; the piston rod is connected to the piston plate, and the two ends of the piston rod respectively pass through the two end surfaces of the piston cylinder and extend out of the piston cylinder; the first outlet port is connected to a first conduit, the other end of the first conduit is connected to the first cavity; the second outlet port is connected to a second conduit, the other end of the second conduit is connected to the second cavity;

[0016] A push rod is connected to one end of the piston rod extending out of the piston cylinder, a transmission rod is connected to the push rod and extends vertically along the width direction of the push rod, and a first tooth is provided on the outer surface of the transmission rod;

[0017] The driven member includes:

[0018] The transmission member comprises a semicircular arc ring which is limitedly slidable on the top surface of the main fin, one end of the semicircular arc ring is connected to the auxiliary fin; and second teeth are provided on the outer arc surface of the semicircular arc ring;

[0019] The gear column is rotatably arranged on the top surface of the main fin, and the second teeth and the first teeth are both meshed and connected with the gear column.

[0020] Furthermore, a return spring is further provided inside the first cavity, the return spring being sleeved on the piston rod, one end of the return spring being connected to the piston plate, and the other end being connected to the inner wall of the piston cylinder. The return spring provides thrust to the piston plate in an initial elastic state, so that the piston plate is positioned in the center of the piston cylinder;

[0021] Among them, the temperature increase and expansion of the insulating oil will cause the flow rate of the insulating oil flowing inside the transformer to change. The flow change causes the pressure difference between the first outlet and the second outlet to change. The pressure difference is transmitted to both sides of the piston plate, causing the piston plate and the piston rod to move along the axis of the piston cylinder.

[0022] Furthermore, a guide slide is provided on the semicircular arc ring, and a guide column is provided on the center line of the top surface of the main fin, and the guide column is located inside the guide slide.

[0023] Furthermore, a bracket is provided on the outer wall of the piston member, the bracket is connected to the side wall of the transformer body, and the piston member is fixed to the transformer body through the bracket.

[0024] Furthermore, the auxiliary fin is provided with an integrally formed heat dissipation through hole, and a plurality of the heat dissipation through holes are provided, and the plurality of heat dissipation through holes are arranged at equal intervals along the length direction of the auxiliary fin.

[0025] Furthermore, the gear column includes a rotating shaft rotating on the top surface of the main fin, and a lower gear and a wedge block are provided on the rotating shaft. The lower gear is coaxial with the upper gear, and the lower gear is located below the upper gear. The number of teeth provided on the outer periphery of the lower gear exceeds the number of teeth provided on the outer periphery of the upper gear.

[0026] The first teeth are meshed and connected with the lower gear, and the second teeth are meshed and connected with the upper gear.

[0027] Furthermore, a connecting hole connecting the oil storage chamber and the flow channel is opened on the side wall in the longitudinal direction of the main fin, a valve component for sealing the connecting hole is inserted on the main fin, and an adjusting component for controlling the vertical sliding of the valve component to seal or open the connecting hole is also provided on the main fin.

[0028] Furthermore, the valve component includes a valve plate that is slidably inserted into the interior of the flow channel, and a plurality of conducting holes are equidistantly provided on the valve plate. One end of the valve plate extending into the interior of the flow channel is connected to a support spring, and the end of the support spring away from the valve plate is connected to the inner bottom wall of the flow channel. Under the initial elastic force of the support spring, the valve plate is provided with an upward displacement tendency so that the conducting holes and the connected connecting holes are staggered with each other.

[0029] Furthermore, the adjusting member includes a support plate extending vertically upward from the top surface of the main fin, and a sliding column that can slide along the width direction of the main fin is provided on the support plate, and a wedge block is provided at one end of the sliding column, and the end of the valve plate extending above the main fin is provided with an inclined surface adapted to the wedge block, and a push spring is also sleeved on the sliding column, one end of the push spring is connected to the wedge block, and the other end is connected to the support plate, and the other end of the sliding column is abutted against the inner arc surface of the semicircular ring, and a protrusion is provided on the inner arc surface of the semicircular ring. When the auxiliary fin drives the semicircular ring to rotate, the protrusion acts on the other end of the sliding column to push the sliding column to slide along the width direction of the main fin.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention can flexibly adjust the heat dissipation area according to the actual heat generation of the transformer by changing the angle between the auxiliary fins and the main fins. When the transformer load is low and the heat generation is low, the angle between the auxiliary fins and the main fins is reduced, and the insulating oil only flows in the main fins, thereby reducing the heat dissipation area and avoiding unnecessary heat dissipation energy consumption. When the transformer load increases and the heat generation increases, the angle is increased, and the insulating oil flows into the auxiliary fins, increasing the heat dissipation area, effectively improving the heat dissipation efficiency, and ensuring the stable operation of the transformer under different working conditions. The auxiliary fins are driven to rotate by the pressure difference generated by the flow of insulating oil in the transformer tube, without the need for an additional power source. Compared with the traditional method of increasing heat dissipation by increasing the oil pump speed, the present invention greatly reduces energy consumption and improves energy utilization efficiency, meeting the development requirements of energy conservation and emission reduction.

[0032] 2. The present invention, on the one hand, can increase the heat dissipation area and improve the heat dissipation capacity by adding auxiliary fins. The auxiliary fins are provided with multiple heat dissipation holes arranged equidistantly along the length direction, which further enhances the heat dissipation effect. On the other hand, the movement of the semicircular arc ring ultimately puts the auxiliary fins in a state of continuous movement, breaking the state of accumulation of surrounding hot air, promoting air circulation and exchange, and avoiding the problem of reduced heat dissipation efficiency caused by the fixed heat dissipation area and accumulation of surrounding hot air in traditional radiators, effectively improving the heat dissipation environment and ensuring efficient heat dissipation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 It is a side structural schematic diagram of the present invention;

[0035] Figure 3 Schematic diagram of the front structure of the radiator in the present invention;

[0036] Figure 4 It is a rear structural schematic diagram of the radiator in the present invention;

[0037] Figure 5 Schematic diagram of the front structure of the heat dissipation fins in the present invention;

[0038] Figure 6 Schematic diagram of the top view of the heat dissipation fin in the present invention;

[0039] Figure 7 Schematic diagram of the structure of the main fin in the present invention;

[0040] Figure 8 for Figure 7 A magnified view of the structure at point A;

[0041] Figure 9 Schematic diagram of the structure of the valve component in the present invention;

[0042] Figure 10 Schematic diagram of the structure of the upper oil pipe in the present invention;

[0043] Figure 11 It is a schematic diagram of the cross-sectional structure of the upper oil pipe in the present invention.

[0044] In the picture:

[0045] 1. Transformer body; 2. Upper oil pipe; 3. Lower oil pipe;

[0046] 4. Heat sink; 41. Main fin; 42. Flow channel; 43. Connecting hole; 44. Valve member; 441. Valve plate; 442. Guide hole; 443. Support spring; 45. Flexible connection; 46. Auxiliary fin; 47. Transmission member; 471. Semicircular ring; 472. Raised portion; 473. Guide slideway; 474. Second tooth; 475. Guide column; 48. Gear column; 481. Rotating shaft; 482. Lower gear; 483. Upper gear; 49. Adjusting member; 491. Support plate; 492. Sliding column; 493. Wedge block; 494. Push spring;

[0047] 5. Active part; 51. Transformer; 511. Inlet section; 512. Contraction section; 513. Throat; 514. Diffusion section; 515. First outlet; 516. Second outlet; 52. Piston; 521. Piston cylinder; 522. Piston plate; 523. Piston rod; 524. Return spring; 53. First conduit; 54. Second conduit; 55. Bracket; 56. Push rod; 57. Transmission rod; 58. First tooth. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0049] See also Figures 1-11 The present invention provides a technical solution: an energy-saving high-voltage transformer, comprising a transformer body 1, on the outer wall of which is mounted a radiator for dissipating heat from insulating oil therein, the radiator comprising an upper oil pipe 2 connected to the upper side wall of the transformer body 1, a lower oil pipe 3 connected to the lower side wall of the transformer body 1, and a plurality of heat sinks 4 connected between the upper oil pipe 2 and the lower oil pipe 3. The heat sink 4 comprises a main fin 41 connected between the upper oil pipe 2 and the lower oil pipe 3, and provided with a flow channel 42 therein for communicating with the upper oil pipe 2 and the lower oil pipe 3;

[0050] The flexible connection portion 45 is connected to the side wall of the main fin 41 in the longitudinal direction. The side away from the main fin 41 is connected to the auxiliary fin 46. The flexible connection portion 45 and the auxiliary fin 46 are both provided with an oil storage cavity.

[0051] When the angle between the auxiliary fin 46 and the main fin 41 is greater than 90°, the oil chamber is connected to the flow channel 42, and the insulating oil can flow in the main fin 41 and the auxiliary fin 46. When the angle between the auxiliary fin 46 and the main fin 41 is less than 90°, the oil chamber is not connected to the flow channel 42, and the insulating oil can only flow in the main fin 41. The radiator is also provided with a driving component for driving the auxiliary fin 46 to rotate to adjust the angle between it and the main fin 41.

[0052] Specifically, the operation of the transformer body 1 generates heat to heat the internal insulating oil. The hot oil flows out from the upper oil pipe 2 on the upper side wall of the transformer body 1 into the radiator, and the insulating oil flows into the flow channel 42 in the main fin 41 that connects the upper oil pipe 2 and the lower oil pipe 3. The insulating oil flows in the flow channel 42 and dissipates heat to the main fin 41. The main fin 41 is connected to the auxiliary fin 46 through the flexible connection part 45. When the angle between the auxiliary fin 46 and the main fin 41 is greater than 90 degrees, the flexible connection part 45 is connected to the oil chamber inside the auxiliary fin 46 and the flow channel 42, and the insulating oil can flow into the auxiliary fin. 46; when the angle is less than 90°, it is not connected. The driving component adjusts the angle between the auxiliary fins 46 and the main fins 41 according to the operating status of the transformer; by flexibly changing the angle between the auxiliary fins 46 and the main fins 41, the heat dissipation area is adjusted. When the transformer load is low and the heat generation is small, the angle is reduced, and the insulating oil only flows in the main fins 41, reducing the heat dissipation area and reducing energy consumption; when the load is high and the heat generation is high, the angle is increased, and the insulating oil flows into the auxiliary fins 46, increasing the heat dissipation area and improving the heat dissipation efficiency, thereby solving the problem of fixed heat dissipation area of traditional radiators.

[0053] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 10 and Figure 11 The driving component includes an active member 5 and a driven member. The active member 5 includes a transformer 51 connected to the upper oil pipe 2, including an inlet section 511, a contraction section 512, a throat 513 and a diffusion section 514. The side walls of the inlet section 511 and the throat 513 are respectively provided with a first outlet 515 and a second outlet 516 extending outward.

[0054] The piston member 52 is provided on the outer wall of the transformer body 1 and includes a piston cylinder 521, a piston plate 522, a piston rod 523 and a return spring 524; the piston plate 522 is slidably connected to the interior of the piston cylinder 521, and the piston plate 522 divides the interior of the piston cylinder 521 into a first cavity and a second cavity. The piston rod 523 is connected to the piston plate 522, and the two ends of the piston rod 523 respectively pass through the two end surfaces of the piston cylinder 521 and extend out of the piston cylinder 521. The first outlet 515 is connected to the first conduit 53, the other end of the first conduit 53 is connected to the first cavity, and the second outlet 516 is connected to the second conduit 54, the other end of the second conduit 54 is connected to the second cavity;

[0055] A push rod 56 is connected to the end of the piston rod 523 extending out of the piston cylinder 521. A transmission rod 57 is connected to the push rod 56 and extends vertically along the width direction of the push rod 56. A first tooth 58 is provided on the outer surface of the transmission rod 57.

[0056] The driven member includes a transmission member 47, including a semicircular ring 471 that is limited and slides on the top surface of the main fin 41, and one end of the semicircular ring 471 is connected to the auxiliary fin 46; a second tooth 474 is provided on its outer arc surface;

[0057] The gear column 48 is rotatably disposed on the top surface of the main fin 41 , and the second teeth 474 and the first teeth 58 are both meshed and connected with the gear column 48 .

[0058] Specifically, in the active component 5, the insulating oil flows through the transformer 51, and its inlet section 511, contraction section 512, throat 513 and diffusion section 514 cause the oil flow to have different flow rates and pressures, forming a pressure difference between the first outlet 515 and the second outlet 516. The pressure difference is transmitted to both sides of the piston plate 522 of the piston component 52 through the first conduit 53 and the second conduit 54, causing the piston plate 522 to slide in the piston cylinder 521, driving the piston rod 523 to move, and the piston rod 523 drives the push rod 56 and the transmission rod 57 to move. The first tooth 58 on 7 is engaged with the gear column 48, driving the gear column 48 to rotate, and the gear column 48 is engaged with the second tooth 474 on the outer arc surface of the semicircular arc ring 471 of the transmission member 47, so that the semicircular arc ring 471 slides on the top surface of the main fin 41 to drive the auxiliary fin 46 to rotate; the pressure difference generated by the flow of insulating oil itself is used to drive the auxiliary fin 46 to rotate, without the need for an additional power source, reducing energy consumption, and realizing the rotation control of the auxiliary fin 46 through the ingenious mechanical structure transmission, thereby improving the intelligence and automation of the system.

[0059] See Figure 10 and Figure 11 A return spring 524 is further provided inside the first cavity. The return spring 524 is sleeved on the piston rod 523. One end of the return spring 524 is connected to the piston plate 522, and the other end is connected to the inner wall of the piston cylinder 521. The return spring 524 provides thrust for the piston plate 522 in the initial elastic state, so that the piston plate 522 is located in the center of the piston cylinder 521.

[0060] Among them, the temperature increase and expansion of the insulating oil will cause the flow rate of the insulating oil flowing inside the transformer 51 to change. The flow rate change causes the pressure difference between the first outlet 515 and the second outlet 516 to change. The pressure difference is transmitted to both sides of the piston plate 522, causing the piston plate 522 and the piston rod 523 to move along the axis of the piston cylinder 521.

[0061] Specifically, the return spring 524 is sleeved on the piston rod 523, one end of which is connected to the piston plate 522, and the other end is connected to the inner wall of the piston cylinder 521. In the initial state, the return spring 524 provides thrust for the piston plate 522 to make it located in the center of the piston cylinder 521. The insulating oil heats up and expands, causing the flow in the transformer 51 to change, resulting in a change in the pressure difference between the first outlet 515 and the second outlet 516. The force on both sides of the piston plate 522 changes, overcoming or with the help of the elastic force of the return spring 524, so that the piston plate 522 and the piston rod 523 move along the axis of the piston cylinder 521; the return spring 524 plays a buffering and reset role, making the movement of the piston plate 522 more stable, avoiding damage to the system caused by violent movement due to sudden changes in pressure difference, and at the same time, it can make the system automatically return to the initial state when the insulating oil temperature and flow return to normal, thereby ensuring the stability and reliability of the system operation.

[0062] See Figure 5-Figure 8A guide slide 473 is provided on the semicircular ring 471 , and a guide column 475 is provided on the center line of the top surface of the main fin 41 , and the guide column 475 is located inside the guide slide 473 .

[0063] Specifically, the guide slide 473 on the semicircular ring 471 cooperates with the guide column 475 on the center line of the top surface of the main fin 41. When the semicircular ring 471 moves driven by the gear column 48, the guide column 475 slides in the guide slide 473, limiting the movement trajectory of the semicircular ring 471 so that it can only slide in a limited direction on the top surface of the main fin 41, thereby ensuring that the auxiliary fin 46 rotates smoothly and accurately; the guide structure improves the stability and accuracy of the rotation of the auxiliary fin 46, avoids the auxiliary fin 46 from offset or shaking during rotation, ensures the reliability of the heat dissipation system, and also helps to extend the service life of related components.

[0064] See Figure 1 and Figure 10 A bracket 55 is provided on the outer wall of the piston member 52 , and the bracket 55 is connected to the side wall of the transformer body 1 . The piston member 52 is fixed to the transformer body 1 through the bracket 55 .

[0065] Specifically, the bracket 55 is connected between the outer wall of the piston member 52 and the side wall of the transformer body 1, fixing the piston member 52 on the transformer body 1, so that the active member 5 and the transformer body 1 form a stable connection structure, ensuring that during the operation of the transformer, the piston member 52 can stably sense the pressure difference changes in the transformer tube 51 and take corresponding actions; ensuring the installation stability of the active member 5, making the structure of the entire heat dissipation system more solid, which is conducive to the long-term stable operation of the system and reducing the probability of failures caused by problems such as loose components.

[0066] See Figure 5 The auxiliary fin 46 is provided with an integrally formed heat dissipation through hole, and a plurality of heat dissipation through holes are provided, and the plurality of heat dissipation through holes are arranged equidistantly along the length direction of the auxiliary fin 46 .

[0067] Specifically, the multiple heat dissipation holes on the auxiliary fins 46 are arranged at equal intervals along the length direction thereof. When the insulating oil flows into the auxiliary fins 46, the heat is transferred to the air around the heat dissipation holes through the auxiliary fins 46, thereby increasing the contact area between the auxiliary fins 46 and the air, accelerating the heat exchange speed, and enhancing the heat dissipation effect; further improving the heat dissipation capacity of the auxiliary fins 46, and helping to more efficiently dissipate the heat carried by the insulating oil to the surrounding environment on the basis of increasing the heat dissipation area, thereby enhancing the heat dissipation efficiency of the entire heat dissipation system and better meeting the heat dissipation requirements of the transformer under different working conditions.

[0068] See Figure 4 、 Figure 6 and Figure 8The gear column 48 includes a rotating shaft 481 that rotates on the top surface of the main fin 41. A lower gear 482 and a wedge block 493 are provided on the rotating shaft 481. The lower gear 482 is coaxial with the upper gear 483. The lower gear 482 is located below the upper gear 483. The number of teeth provided on the outer periphery of the lower gear 482 exceeds the number of teeth provided on the outer periphery of the upper gear 483.

[0069] The first teeth 58 are meshed and connected with the lower gear 482 , and the second teeth 474 are meshed and connected with the upper gear 483 .

[0070] Specifically, the rotating shaft 481 of the gear column 48 is rotatably set on the top surface of the main fin 41, and the lower gear 482 and the upper gear 483 are coaxially set on the rotating shaft 481, and the number of teeth of the lower gear 482 is more than the number of teeth of the upper gear 483. The first tooth 58 is engaged with the lower gear 482, and the second tooth 474 is engaged with the upper gear 483. When the transmission rod 57 moves to drive the first tooth 58 to rotate, the lower gear 482 rotates. Due to the difference in the number of teeth, the upper gear 483 will rotate at a different speed, thereby realizing fine adjustment of the rotation speed and angle of the auxiliary fin 46; through the combination of gears with different numbers of teeth, the transmission ratio is changed, which can more accurately control the rotation of the auxiliary fin 46, making the adjustment of the auxiliary fin 46 more flexible, and can more accurately adjust the heat dissipation area according to the different heat generation conditions of the transformer, thereby improving the adaptability and energy-saving effect of the heat dissipation system.

[0071] See Figure 3-Figure 9 A connecting hole 43 connecting the oil storage chamber and the flow channel 42 is provided on the side wall of the main fin 41 in the longitudinal direction. A valve member 44 for sealing the connecting hole 43 is inserted on the main fin 41. An adjusting member 49 for controlling the vertical sliding of the valve member 44 to seal or open the connecting hole 43 is also provided on the main fin 41.

[0072] Specifically, the connecting hole 43 on the side wall of the main fin 41 is used to connect the oil storage chamber and the flow channel 42. The valve member 44 is inserted into the main fin 41 to block the connecting hole 43. The adjusting member 49 can control the vertical sliding of the valve member 44. When it is necessary to connect the oil storage chamber and the flow channel 42, the adjusting member 49 is actuated to push the valve member 44 to slide downward and open the connecting hole 43. When connection is not required, the valve member 44 slides upward under the action of its own structure to block the connecting hole 43. This achieves precise control of the flow path of the insulating oil between the main fin 41 and the auxiliary fin 46. Only when the angle between the auxiliary fin 46 and the main fin 41 meets specific conditions and the heat dissipation area needs to be increased, the oil storage chamber and the flow channel 42 are connected, thereby ensuring the rationality and efficiency of the heat dissipation system.

[0073] See Figure 7 、 Figure 8 and Figure 9The valve member 44 includes a valve plate 441 that is slidably inserted into the interior of the flow channel 42. A plurality of conducting holes 442 are equidistantly provided on the valve plate 441. One end of the valve plate 441 extending into the interior of the flow channel 42 is connected to a support spring 443. The end of the support spring 443 away from the valve plate 441 is connected to the inner bottom wall of the flow channel 42. Under the initial elastic force of the support spring 443, the valve plate 441 is provided with an upward displacement tendency so that the conducting holes 442 and the connected connecting holes 43 are staggered with each other.

[0074] Specifically, initially, the support spring 443 pushes the valve plate 441 upward, causing the conducting hole 442 to be offset from the connecting hole 43, thereby blocking the connecting hole 43. When the adjusting member 49 moves to push the valve plate 441 downward, the conducting hole 442 is aligned with the connecting hole 43, thereby achieving connection between the oil containing chamber and the flow channel 42. The design of the support spring 443 ensures that the valve plate 441 can reliably block the connecting hole 43 when there is no external force, thereby preventing the insulating oil from flowing into the auxiliary fin 46 when it is not needed. At the same time, the connecting hole 43 can be flexibly opened under the action of the adjusting member 49, thereby ensuring the accuracy and stability of the system's control over the circulation of the insulating oil.

[0075] See Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The adjusting member 49 includes a support plate 491 extending vertically upward from the top surface of the main fin 41, and a sliding post 492 that can slide along the width direction of the main fin 41 is provided on the support plate 491, and a wedge block 493 is provided at one end of the sliding post 492. The end of the valve plate 441 extending above the main fin 41 is provided with an inclined surface adapted to the wedge block 493. A push spring 494 is also sleeved on the sliding post 492, and one end of the push spring 494 is connected to the wedge block 493, and the other end is connected to the support plate 491. The other end of the sliding post 492 is against the inner arc surface of the semicircular ring 471, and a protrusion 472 is provided on the inner arc surface of the semicircular ring 471. When the auxiliary fin 46 drives the semicircular ring 471 to rotate, the protrusion 472 acts on the other end of the sliding post 492 to push the sliding post 492 to slide along the width direction of the main fin 41.

[0076] The spring 443 is pressed against the piston 474 to release the piston 476, and the piston 477 is pressed against the piston 478 to release the piston 479. The piston 480 is pressed against the piston 474 to release the piston 479.

[0077] Working principle: During the operation of the transformer body 1, the load current flowing through the winding generates Joule heat, which increases the temperature of the internal insulating oil. The hot insulating oil enters the radiator from the upper oil pipe 2 on the upper side wall of the transformer body 1. Inside the radiator, the insulating oil first flows into the flow channel 42 of the main fin 41. The flow channel 42 connects the upper oil pipe 2 and the lower oil pipe 3. The insulating oil flows in the flow channel 42 and transfers the heat to the main fin 41, achieving initial heat dissipation.

[0078] The main fins 41 are connected to the auxiliary fins 46 via flexible connectors 45. Both fins have oil chambers inside. When the transformer generates a lot of heat, the insulating oil heats up and expands, causing the flow rate in the transformer tube 51 to change. The transformer tube 51 is connected to the upper oil pipe 2. The structure of its inlet section 511, contraction section 512, throat 513, and diffusion section 514 causes the oil flow to have different flow rates and pressures, forming a pressure difference between the first outlet 515 and the second outlet 516 on the side wall of the inlet section 511 and the throat 513.

[0079] The pressure difference is transmitted to both sides of the piston plate 522 of the piston member 52 through the first conduit 53 and the second conduit 54. The piston plate 522 is slidably connected to the piston cylinder 521, dividing the piston cylinder 521 into a first cavity and a second cavity. The pressure difference overcomes the elastic force of the return spring 524, causing the piston plate 522 to drive the piston rod 523 to move. The push rod 56 is connected to the end of the piston rod 523 that extends out of the piston cylinder 521. The transmission rod 57 on the push rod 56 has a first tooth 58.

[0080] On the top surface of the main fin 41, a gear column 48 is rotatably provided, which meshes with the first teeth 58 of the transmission rod 57 and the second teeth 474 on the outer arc surface of the semicircular ring 471 of the transmission member 47. When the transmission rod 57 moves, the gear column 48 drives the semicircular ring 471 to slide on the top surface of the main fin 41. The semicircular ring 471 is connected to the auxiliary fin 46, thereby rotating the auxiliary fin 46.

[0081] When the angle between the auxiliary fin 46 and the main fin 41 is greater than 90°, the oil storage cavity inside the auxiliary fin 46 and the flexible connection portion 45 is connected to the flow channel 42 of the main fin 41, and the insulating oil flows into the auxiliary fin 46, further increasing the heat dissipation area. When the angle between the auxiliary fin 46 and the main fin 41 is less than 90°, the oil storage cavity is not connected to the flow channel 42, and the insulating oil flows only in the main fin 41.

[0082] In addition, when the semicircular ring 471 rotates, its inner protrusion 472 pushes the slide 492 to slide on the support plate 491 along the width direction of the main fin 41. The wedge block 493 at one end of the slide 492 acts on the inclined surface of the valve plate 441, overcoming the elastic force of the support spring 443, causing the valve plate 441 to slide downward. The conducting hole 442 on the valve plate 441 is connected with the connecting hole 43 on the side wall of the main fin 41, realizing the conduction between the oil containing cavity and the flow channel 42, controlling the flow path of the insulating oil, and finally, the cooled insulating oil flows back to the transformer body 1 from the lower oil pipe 3.

[0083] It should be noted that when the transformer load changes, the heat generated by the winding also changes, causing the insulating oil temperature to fluctuate.

[0084] In the heat dissipation system of this energy-saving high-voltage transformer, the transformer tube 51 is connected to the upper oil pipe 2. Its unique structure of the inlet section 511, contraction section 512, throat 513, and diffusion section 514 causes the flow rate and pressure of the insulating oil flowing therethrough to vary. When the insulating oil temperature rises, its volume expands, and its fluidity within the pipe increases, causing the flow rate through the transformer tube 51 to fluctuate. This large fluctuation in flow rate can significantly change the pressure difference between the inlet section 511 of the transformer tube 51 and the first outlet 515 and the second outlet 516 on the side wall of the throat 513.

[0085] The pressure difference is transmitted to both sides of the piston plate 522 of the piston member 52 through the first conduit 53 and the second conduit 54. Since the piston plate 522 is slidably connected to the piston cylinder 521 and the piston plate 522 divides the piston cylinder 521 into a first cavity and a second cavity, changes in the pressure difference will cause the force on the piston plate 522 to become unbalanced. When the pressure difference increases, the piston plate 522 overcomes the elastic force of the return spring 524 and drives the piston rod 523 to move. When the pressure difference decreases, the return spring 524 pushes the piston plate 522 and the piston rod 523 to move in opposite directions.

[0086] One end of the piston rod 523 extends out of the piston cylinder 521 and is connected to the push rod 56. The outer surface of the transmission rod 57 extending vertically along the width of the push rod 56 is provided with a first tooth 58. Therefore, the irregular back and forth movement of the piston rod 523 will drive the transmission rod 57 and the first tooth 58 to move irregularly synchronously.

[0087] On the top surface of the main fin 41, a gear column 48 is rotatably arranged to mesh with the first teeth 58 of the transmission rod 57 and the second teeth 474 on the outer arc surface of the semicircular ring 471 of the transmission member 47. When the first teeth 58 move irregularly, the gear column 48 drives the semicircular ring 471 to slide on the top surface of the main fin 41 in a limited manner. Since one end of the semicircular ring 471 is connected to the auxiliary fin 46, the movement of the semicircular ring 471 ultimately keeps the auxiliary fin 46 in a state of continuous movement.

[0088] Compared with traditional radiators, the heat sink 4 has a fixed structure and the heat dissipation area cannot be flexibly adjusted according to actual heat dissipation needs. As the transformer continues to operate, the surrounding air is continuously heated, and the hot air is difficult to diffuse quickly. It accumulates around the radiator to form a high-temperature area, resulting in a continuous decline in heat dissipation efficiency. The dynamic movement of the auxiliary fins 46 in this solution can break the state of accumulation of surrounding hot air and promote air circulation and exchange. At the same time, through the continuous change of the angle between the auxiliary fins 46 and the main fins 41, the heat dissipation area can be dynamically adjusted according to the fluctuations of the insulating oil temperature and flow rate. When the insulating oil temperature is high and the flow rate is large, that is, the transformer generates a lot of heat, the angle between the auxiliary fins 46 and the main fins 41 increases, and more insulating oil flows into the auxiliary fins 46, greatly increasing the heat dissipation area; conversely, when the heat generation decreases, the angle decreases, and the heat dissipation area is adjusted accordingly, avoiding unnecessary heat dissipation energy consumption. This dynamic adjustment mechanism effectively improves the heat dissipation environment and ensures that the transformer can achieve efficient heat dissipation under various working conditions.

[0089] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An energy-saving high-voltage transformer, comprising a transformer body (1), on the outer wall of which is mounted a radiator for dissipating heat from the insulating oil inside the transformer, characterized in that: The radiator comprises an upper oil pipe (2) connected to the upper side wall of the transformer body (1), a lower oil pipe (3) connected to the lower side wall of the transformer body (1), and a plurality of heat sinks (4) connected between the upper oil pipe (2) and the lower oil pipe (3). The heat sink (4) comprises a main fin (41) connected between the upper oil pipe (2) and the lower oil pipe (3), and a flow channel (42) communicating with the upper oil pipe (2) and the lower oil pipe (3); A flexible connecting portion (45) is connected to a side wall of the main fin (41) in a longitudinal direction, and a secondary fin (46) is connected to the side away from the main fin (41). Oil cavities are provided inside the flexible connecting portion (45) and the secondary fin (46); When the angle between the auxiliary fin (46) and the main fin (41) is greater than 90 degrees, the oil containing cavity is connected to the flow channel (42), and the insulating oil can flow in the main fin (41) and the auxiliary fin (46); when the angle between the auxiliary fin (46) and the main fin (41) is less than 90 degrees, the oil containing cavity is not connected to the flow channel (42), and the insulating oil can only flow in the main fin (41). The radiator is also provided with a driving component for driving the auxiliary fin (46) to rotate so as to adjust the angle between the auxiliary fin (46) and the main fin (41).

2. The energy-saving high-voltage transformer according to claim 1, characterized in that: The driving component includes an active member (5) and a driven member. The active member (5) includes a transformer tube (51), which is connected to the upper oil pipe (2) and includes an inlet section (511), a contraction section (512), a throat (513) and a diffusion section (514). The side walls of the inlet section (511) and the throat (513) are respectively provided with a first outlet (515) and a second outlet (516) extending outwards. The piston member (52) is arranged on the outer wall of the transformer body (1), and includes a piston cylinder (521), a piston plate (522), a piston rod (523) and a return spring (524); the piston plate (522) is slidably connected to the interior of the piston cylinder (521), and the piston plate (522) divides the interior of the piston cylinder (521) into a first cavity and a second cavity; the piston rod (523) is connected to the piston plate (522), and the two ends of the piston rod (523) respectively pass through the two end surfaces of the piston cylinder (521) and extend out of the piston cylinder (521); the first outlet (515) port is connected to a first conduit (53), and the other end of the first conduit (53) is communicated with the first cavity; the second outlet (516) port is connected to a second conduit (54), and the other end of the second conduit (54) is communicated with the second cavity; A push rod (56) is connected to one end of the piston rod (523) extending out of the piston cylinder (521); a transmission rod (57) extending vertically along the width direction of the push rod (56) is connected to the push rod (56); a first tooth (58) is provided on the outer surface of the transmission rod (57); The driven member includes a transmission member (47), including a semicircular arc ring (471) that is limited and slides on the top surface of the main fin (41), one end of the semicircular arc ring (471) is connected to the auxiliary fin (46); and a second tooth (474) is provided on the outer arc surface of the semicircular arc ring; The gear column (48) is rotatably arranged on the top surface of the main fin (41), and the second teeth (474) and the first teeth (58) are both meshed and connected with the gear column (48).

3. The energy-saving high-voltage transformer according to claim 2, characterized in that: A return spring (524) is further provided inside the first cavity. The return spring (524) is sleeved on the piston rod (523). One end of the return spring (524) is connected to the piston plate (522), and the other end is connected to the inner wall of the piston cylinder (521). In the initial elastic state, the return spring (524) provides thrust for the piston plate (522) so that the piston plate (522) is located in the center of the piston cylinder (521). The expansion of the insulating oil due to temperature increase causes the flow rate of the insulating oil flowing inside the transformer tube (51) to change. The flow rate change causes the pressure difference between the first outlet (515) and the second outlet (516) to change. The pressure difference is transmitted to both sides of the piston plate (522), causing the piston plate (522) and the piston rod (523) to move along the axis of the piston cylinder (521).

4. The energy-saving high-voltage transformer according to claim 2, characterized in that: A guide slideway (473) is provided on the semicircular arc ring (471), and a guide column (475) is provided on the center line of the top surface of the main fin (41), and the guide column (475) is located inside the guide slideway (473).

5. The energy-saving high-voltage transformer according to claim 2, characterized in that: A bracket (55) is provided on the outer wall of the piston member (52), the bracket (55) is connected to the side wall of the transformer body (1), and the piston member (52) is fixed to the transformer body (1) via the bracket (55).

6. The energy-saving high-voltage transformer according to claim 2, characterized in that: The auxiliary fin (46) is provided with an integrally formed heat dissipation through hole, and a plurality of the heat dissipation through holes are provided, and the plurality of heat dissipation through holes are arranged at equal intervals along the length direction of the auxiliary fin (46).

7. The energy-saving high-voltage transformer according to claim 2, characterized in that: The gear column (48) includes a rotating shaft (481) rotating on the top surface of the main fin (41), and a lower gear (482) and a wedge block (493) are provided on the rotating shaft (481). The lower gear (482) is coaxial with the upper gear (483), and the lower gear (482) is located below the upper gear (483). The number of teeth provided on the outer periphery of the lower gear (482) exceeds the number of teeth provided on the outer periphery of the upper gear (483); The first teeth (58) are meshedly connected to the lower gear (482), and the second teeth (474) are meshedly connected to the upper gear (483).

8. The energy-saving high-voltage transformer according to claim 4, characterized in that: A communication hole (43) for connecting the oil storage chamber and the flow channel (42) is provided on the side wall in the longitudinal direction of the main fin (41). A valve member (44) for blocking the communication hole (43) is plugged into the main fin (41). An adjusting member (49) for controlling the vertical sliding of the valve member (44) to block or open the communication hole (43) is also provided on the main fin (41).

9. The energy-saving high-voltage transformer according to claim 8, characterized in that: The valve member (44) includes a valve plate (441) that is slidably inserted into the interior of the flow channel (42), and a plurality of conducting holes (442) are equidistantly provided on the valve plate (441). One end of the valve plate (441) that extends into the interior of the flow channel (42) is connected to a support spring (443), and one end of the support spring (443) that is away from the valve plate (441) is connected to the inner bottom wall of the flow channel (42). Under the initial elastic force of the support spring (443), the valve plate (441) is provided with an upward displacement tendency so that the conducting holes (442) and the connected connecting holes (43) are staggered with each other.

10. The energy-saving high-voltage transformer according to claim 9, characterized in that: The regulating member (49) includes a support plate (491) extending vertically upward from the top surface of the main fin (41), a slide column (492) that can slide along the width direction of the main fin (41) is provided on the support plate (491), a wedge block (493) is provided at one end of the slide column (492), and an inclined surface that matches the wedge block (493) is provided at one end of the valve plate (441) extending above the main fin (41), and a push spring (494) is also sleeved on the slide column (492). One end of the spring (494) is connected to the wedge block (493), and the other end is connected to the support plate (491). The other end of the slide column (492) is against the inner arc surface of the semicircular arc ring (471). A protrusion (472) is provided on the inner arc surface of the semicircular arc ring (471). When the auxiliary fin (46) drives the semicircular arc ring (471) to rotate, the protrusion (472) acts on the other end of the slide column (492) to push the slide column (492) to slide along the width direction of the main fin (41).

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