A rectifier transformer

Abstract

The present invention relates to the technical field of transformers, and specifically discloses a rectifier transformer, comprising: a transformer body and a guide assembly, the transformer body comprising an oil tank and heat dissipation fins, a plurality of heat dissipation fins are arranged on the side wall of the oil tank, the oil tank is filled with insulating oil, the heat dissipation fin is a hollow structure, the interior of which is communicated with the oil tank, each of the heat dissipation fins is provided with a guide assembly, the guide assembly comprises a guide plate and a guide vane, the guide plate is slidably fitted in the heat dissipation fin, a driving mechanism is arranged in the transformer, the driving mechanism is used to drive the guide plate to reciprocate in the heat dissipation fin, the guide plate divides the heat dissipation fin into a first cavity and a second cavity, the guide vane is arranged on both sides of the guide plate, and the guide vane is rotationally matched with the guide plate; the rectifier transformer of the present invention can realize the flow of insulating oil between the oil tank and the heat dissipation fin without a circulating pump, and the maintenance is simple.

Description

Technical Field

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

[0002] Rectifier transformers are power transformers for rectifier equipment, which are used to convert input AC power into DC power and output it. As a transformer for the power supply of rectifier devices, rectifier transformers are used in many fields, such as providing power for DC motors, DC loads, and other ICT DC facilities.

[0003] The heat dissipation of rectifier transformers includes natural cooling, air cooling, oil immersion cooling and forced oil circulation cooling. Oil immersion cooling uses the insulating oil in the oil tank of the rectifier transformer as a heat conduction medium, transfers heat to the outside of the oil tank through the circulation of oil, and then dissipates the heat into the air through the radiator. Forced oil circulation cooling is based on oil immersion cooling and adds an oil pump to force the insulating oil to circulate inside the rectifier transformer to improve the heat dissipation effect. Although this method has better heat dissipation effect than oil immersion cooling, the system is more complicated and the maintenance cost is higher.

[0004] A Chinese patent with authorization announcement number CN104916401B discloses a transformer radiator with detachably connected telescopic outer fins and fixed inner fins, which includes two oil pipes and a plurality of heat sinks connected between the two oil pipes, a flow channel connecting the two oil pipes is provided in the heat sink, an outer fin and an outer slot are provided on the outside of the heat sink, the outer fin includes at least two heat sinks, adjacent heat sinks are telescopically sleeved together, one of the heat sinks is provided with an outer fin portion clamp, the outer fin is pluggable and plugged into the outer slot through the outer fin portion clamp and connected to the heat sink, a plurality of inner fins are provided in the flow channel, and the inner fins are connected to the heat sink in an integrated structure.

[0005] In the above patent, the outer fins are telescopically connected together through multiple heat sinks, and the elongated length of the heat sink fins can be changed according to the heat dissipation needs to achieve a change in the heat dissipation effect, thereby achieving an adjustable heat dissipation effect. By arranging inner fins in the heat sink, the surface area of ​​the flow channel can be increased. The increase in the surface area of ​​the flow channel can increase the contact area between the transformer oil and the flow channel, so that when the transformer oil flows through the oil channel, the heat can be quickly transferred to the heat sink, which plays a role in improving the heat dissipation effect. When assembling the invention, according to the heat dissipation requirements of the use environment of the invention, only a corresponding number of outer fins can be assembled on the outside of the heat sink, and the excess outer fins can be pulled out of the heat sink and not used, which plays a role in further improving the adjustment range of the heat dissipation effect.

[0006] However, in the above patent, the transformer oil is difficult to flow in the transformer, and the transformer oil in the heat sink is difficult to return to the radiator. The heat can only be dissipated through the heat transfer of the transformer oil itself. If the transformer oil is to flow, a circulating pump needs to be added. Only under the action of the circulating pump can the transformer oil circulate in the transformer. However, the circulating pump is difficult to maintain. Summary of the invention

[0007] The invention provides a rectifier transformer, aiming to solve the problem in the related art that a circulating pump is needed to make transformer oil flow.

[0008] The rectifier transformer of the present invention comprises: a transformer body and a current guide component;

[0009] The transformer body includes an oil tank and heat dissipation fins. A plurality of heat dissipation fins are arranged on the side wall of the oil tank. The oil tank is filled with insulating oil. The heat dissipation fins are hollow structures, and the inside of the fins is connected with the oil tank.

[0010] A guide assembly is provided in each of the heat dissipation fins, and the guide assembly includes a guide plate and a guide vane. The guide plate is slidably fitted in the heat dissipation fin. A driving mechanism is provided in the transformer, and the driving mechanism is used to drive the guide plate to reciprocate in the heat dissipation fin. The guide plate divides the heat dissipation fin into a first cavity and a second cavity. The guide vane is provided on one side of the guide plate, and the guide vane is rotatably fitted with the guide plate.

[0011] Beneficial effect: During the heat dissipation process, the driving member drives the first lifting rod to move up and down periodically, and the first lifting rod drives the first connecting rod to move back and forth through the hinged rod. The guide plate moves synchronously with the first connecting rod, so that the guide plate moves back and forth in the heat dissipation fins, and the guide plate periodically approaches or moves away from the oil tank. In the process of the guide plate approaching the oil tank, the guide blades rotate relative to the guide plate under the resistance of the insulating oil, and thus open outward until the guide blades open to the limit. At this time, the guide blades and the guide plates approach the oil tank synchronously, and can move the insulating oil in the heat dissipation fins into the oil tank during the movement. Then the guide plate moves in the opposite direction and gradually moves away from the oil tank. In this process, the guide blades are subjected to the resistance of the remaining insulating oil in the heat dissipation fins, and the guide blades rotate and are received in the receiving groove. Under the action of the pressure difference, the insulating oil in the oil tank can flow into the heat dissipation fins, thereby realizing the flow of insulating oil between the heat dissipation fins and the oil tank.

[0012] Preferably, a plurality of guide blades are provided on one side of the guide plate to form a guide blade group, and the guide blades in the guide blade group are distributed on the guide plate at intervals.

[0013] The effect is that providing a plurality of guide vanes can improve the efficiency of the guide vanes in moving the insulating oil, thereby improving the fluidity of the insulating oil.

[0014] Preferably, the driving mechanism includes a driving member, a first lifting rod, a hinged rod and a first connecting rod, the driving member is arranged on the oil tank, the first lifting rod is connected to the output end of the driving member, the driving member is used to drive the first lifting rod to move up and down, the first connecting rod is connected to the plurality of guide plates, and the first connecting rod and the first lifting rod are hinged through the hinged rod.

[0015] Preferably, a plurality of accommodating grooves are further provided on the side wall of the guide plate, the accommodating grooves correspond to the guide vanes, the accommodating grooves are rotatably connected to the guide vanes away from the side wall of the oil tank, and the side wall close to the oil tank is a curved surface structure.

[0016] The effect is that after the guide vanes move the insulating oil in the heat sink fins into the oil tank, the guide plate moves in the opposite direction, and the guide vanes shrink and retract into the receiving groove under the action of resistance, preventing the guide vanes from blocking the insulating oil in the oil tank from entering the heat sink fins.

[0017] Preferably, a rotating shaft is provided at one end of the guide vane, the rotating shaft is rotatably matched with the side wall of the accommodating groove, and the other end thereof is an arc-shaped structure.

[0018] The effect is that the end of the guide vane is arranged in an arc structure so that there is always a gap between the guide vane and the receiving groove, and the insulating oil is distributed in the gap between the guide vane and the receiving groove, which facilitates the guide vane to open under the action of resistance.

[0019] Preferably, an adjustment component is also provided, which includes a driving unit and an adjustment unit, the driving unit is used to drive the adjustment unit to operate, the adjustment unit includes an adjustment plate and a limit rod, a plurality of the limit rods are divided into two groups, the two groups of limit rods are respectively arranged on both sides of the guide plate, each of the limit rods can stop with the corresponding guide blade, the limit rod is used to limit the rotation range of the guide blade, and the top and bottom ends of each group of the limit rods are provided with adjustment plates, and the adjustment plates are connected to the limit rods.

[0020] The effect is that the limit rod can stop with the guide blade during the opening process of the guide blade, and the limit rod can limit the rotation range of the guide blade. The limit rod is driven to move by the driving unit to adjust the opening range of the guide blade, thereby adjusting the efficiency of the guide blade in promoting the flow of insulating oil. The larger the opening range of the guide blade, the greater the flow efficiency of the insulating oil, and the heat dissipation efficiency is adjusted by adjusting the flow efficiency of the insulating oil.

[0021] Preferably, the driving unit includes a sealing cylinder, a sealing plate, a second lifting rod, a second connecting rod and a driving rod, the sealing cylinder is arranged on the oil tank and is connected to the oil tank, the sealing plate is arranged in the sealing cylinder and is slidably matched with the sealing cylinder, a closed cavity is formed between the sealing plate and the sealing plate, the sealing plate is connected to the second lifting rod, the second lifting rod is connected to the second connecting rod, each of the guide plates is slidably matched with a driving rod, a sliding groove is provided at the end of the driving rod, a plurality of sliders are provided on the second connecting rod, each slider is slidably matched with a sliding groove, a driving gear is rotatably matched with the guide plate, the two adjustment plates on both sides of the same guide plate are meshed with the driving gear, and the driving rod is meshed with the driving gear.

[0022] The effect is that the thermal expansion and contraction of the insulating oil itself is used to drive the limit rod to move, without the need for an additional power source.

[0023] Preferably, the heat dissipation fin is provided with a guide groove, and the guide plate is slidably fitted in the guide groove.

[0024] Preferably, a universal wheel is provided at the bottom of the oil tank, and the universal wheel can drive the oil tank to move in a horizontal plane.

[0025] Preferably, the oil tank is also provided with a lifting ring, and an external crane can lift the oil tank through the lifting ring.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are:

[0027] 1. According to the rectifier transformer of the present invention, during the heat dissipation process, the driving member drives the first lifting rod to move up and down periodically, and the first lifting rod drives the first connecting rod to move back and forth through the hinged rod, and the guide plate moves synchronously with the first connecting rod, so that the guide plate moves back and forth in the heat dissipation fins, and the guide plate periodically approaches or moves away from the oil tank. In the process of the guide plate approaching the oil tank, the guide vanes rotate relative to the guide plates under the resistance of the insulating oil, thereby opening outward until the guide vanes open to the limit. At this time, the guide vanes and the guide plates approach the oil tank synchronously, and can move the insulating oil in the heat dissipation fins into the oil tank during the movement, and then the guide plate moves in the opposite direction and gradually moves away from the oil tank. In this process, the guide vanes are subject to the resistance of the remaining insulating oil in the heat dissipation fins, and the guide vanes rotate and are received in the receiving groove. Under the action of the pressure difference, the insulating oil in the oil tank can flow into the heat dissipation fins, thereby realizing the flow of insulating oil between the heat dissipation fins and the oil tank.

[0028] 2. By setting an adjustment component, the limit rod can stop with the guide blade during the opening process of the guide blade, and the limit rod can limit the rotation range of the guide blade. The limit rod is driven to move by the driving unit to adjust the opening range of the guide blade, thereby adjusting the efficiency of the guide blade in promoting the flow of insulating oil. The larger the opening range of the guide blade, the greater the flow efficiency of the insulating oil. The heat dissipation efficiency is adjusted by adjusting the flow efficiency of the insulating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of a rectifier transformer according to an embodiment of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the guide component of an embodiment of the present invention.

[0031] Figure 3 Schematic diagram of the guide plate structure of an embodiment of the present invention.

[0032] Figure 4 It is a schematic structural diagram of the guide plate in another state according to an embodiment of the present invention.

[0033] Figure 5 It is a schematic diagram of the structure of the adjustment unit of an embodiment of the present invention.

[0034] Figure 6 Schematic diagram of the structure of a driving unit according to an embodiment of the present invention.

[0035] Figure 7 yes Figure 4 Enlarged view of point A in the middle.

[0036] Figure 8 Schematic diagram of the driving rod structure of an embodiment of the present invention.

[0037] Fig. 9 Schematic diagram of the movement of the guide plate approaching the oil tank according to an embodiment of the present invention.

[0038] Fig.10 Schematic diagram of the movement of the guide plate away from the oil tank according to the embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. Oil tank; 2. Cooling fins; 21. First cavity; 22. Second cavity; 31. Guide plate; 32. Guide vane; 41. Driving member; 42. First lifting rod; 43. First connecting rod; 44. Articulated rod; 51. Sealing cylinder; 52. Sealing plate; 53. Second lifting rod; 54. Second connecting rod; 55. Driving rod; 551. Slide groove; 61. Adjustment plate; 62. Limit rod; 7. Driving gear; 8. Universal wheel; 9. Lifting ear. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0042] like Figures 1 to 8 As shown, the rectifier transformer of the present invention comprises: a transformer body and a current guide component.

[0043] Specifically, Figure 1 As shown, the transformer body is a rectifier transformer in conventional technology. The transformer body includes an oil tank 1, an imported transformer and a rectifier component. The imported transformer and the rectifier component are both arranged in the oil tank 1. An insulator is arranged at the top of the oil tank 1. The imported transformer is electrically connected to the external wires through the insulator. The imported transformer is used to convert the input AC power into AC power with different voltages and frequencies. The rectifier component is used to convert the AC power into DC power. The output end of the rectifier component passes through the oil tank 1 and extends outside the oil tank 1. The external wire can be electrically connected to the output end of the rectifier component. A plurality of heat sink fins 2 are arranged on the side walls of the oil tank 1, and the plurality of heat sink fins 2 on the side walls of the oil tank 1 are arranged in parallel and spaced apart. The heat sink fins 2 are hollow structures, and the interior thereof is connected to the oil tank 1. The oil tank 1 is filled with insulating oil, and the insulating oil can enter the heat sink fins 2.

[0044] like Figures 1 to 4 , Fig. 9 and Fig.10As shown, each heat sink fin 2 is provided with a guide assembly, and the guide assembly includes a guide plate 31 and a guide blade 32. The guide plate 31 is vertically distributed in the heat sink fin 2 and divides the internal space of the heat sink fin 2 into a first cavity 21 and a second cavity 22. A guide groove is provided at the bottom of the heat sink fin 2, and the guide groove extends along the length direction of the heat sink fin 2. The bottom end of the guide plate 31 is slidably fitted in the guide groove, and the guide plate 31 can slide relative to the heat sink fin 2 along the guide groove. The plurality of guide blades 32 are divided into a first guide blade group and a second guide blade group. The two guide blade groups are respectively located on both sides of the guide plate 31. The guide blades 32 in each guide blade group are evenly spaced on the guide plate 31. A plurality of receiving grooves are provided on both side walls of the guide plate 31. The receiving grooves on the same side are parallel and spaced. Each receiving groove corresponds to a guide blade 32. The receiving grooves on one side of the guide plate 31 close to the side wall of the oil tank 1 are all arc structures, and the receiving grooves on the other side away from the side wall of the oil tank 1 are all arc structures. A rotating shaft is provided at one end of the guide blade 32. The guide blade 32 is rotatably connected to the guide plate 31 through the rotating shaft. The connection point between the two is located on the side wall of the receiving groove away from the arc structure. The guide blade 32 can swing relative to the guide plate 31, and the guide blade 32 can be received in the receiving groove. The other end of the guide blade 32 is an arc structure, and there is a gap between the arc end of the guide blade 32 and the arc structure of the receiving groove. A driving mechanism is also provided in the oil tank 1, and the driving mechanism includes a driving member 41, a first lifting rod 42, a hinge rod 44 and a first connecting rod 43. The driving member 41 is a hydraulic cylinder, and the driving member 41 is fixedly connected to the top of the oil tank 1, and its output end passes through the outer shell of the oil tank 1 and extends into the inside of the oil tank 1. The first lifting rod 42 is vertically distributed, and the top of the first lifting rod 42 is fixedly connected to the output end of the driving member 41, and the driving member 41 can drive the first lifting rod 42 to move up and down. The first connecting rod 43 is horizontally distributed, and it is fixedly connected to all the guide plates 31 located on the same side wall of the oil tank 1. The first connecting rod 43 is hinged to the first lifting rod 42 through the hinge rod 44, and the first connecting rod 43 is slidably matched in the oil tank 1, and the first connecting rod 43 can slide relative to the oil tank 1 in the horizontal direction.

[0045] The driving member 41 drives the first lifting rod 42 to move up and down, and the first lifting rod 42 drives the first connecting rod 43 to move back and forth in the horizontal direction through the hinge rod 44. The guide plate 31 moves synchronously with the first connecting rod 43, so that the guide plate 31 moves back and forth in the heat dissipation fin 2 along the extension direction of the guide groove, and the guide plate 31 periodically approaches or moves away from the oil tank 1. Fig. 9As shown, in the process of the guide plate 31 approaching the oil tank 1, the guide plate 31 is out of contact with the heat dissipation fins, and a gap is generated between the two. The side of the guide blade 32 in the first guide blade group close to the guide plate 31 is subject to the resistance of the insulating oil, and rotates relative to the guide plate 31 under the action of the resistance of the insulating oil. The guide blades 32 in the first guide blade group are opened outward until the guide blades 32 are opened to the limit, and the side of the guide blades 32 in the second guide blade group away from the guide plate 31 is subject to the resistance of the insulating oil, and is tightly attached to the guide plate 31 under the action of the resistance of the insulating oil. At this time, the guide blades 32 and the guide plate 31 are synchronously close to the oil tank 1, and can move the insulating oil in the first cavity 21 in the heat dissipation fin 2 into the oil tank 1 during the movement, as shown in FIG. Fig.10 As shown, the guide plate 31 moves in the opposite direction and gradually moves away from the oil tank 1. During this process, the guide blade 32 in the second guide blade group close to the guide plate 31 is subjected to the resistance of the insulating oil, and rotates relative to the guide plate 31 under the action of the resistance of the insulating oil. The guide blades 32 in the second guide blade group open outward and push the insulating oil in the second cavity 22 into the first cavity 21 through the gap between the guide plate and the heat dissipation fins. At the same time, the insulating oil in the oil tank 1 enters the second cavity 22, thereby realizing the circulation of the insulating oil between the oil tank 1 and the heat dissipation fins 2.

[0046] like Figure 1 , Figures 3 to 8As shown, the oil tank 1 is also provided with an adjustment component, which includes a driving unit and an adjustment unit. The driving unit includes a sealing cylinder 51, a sealing plate 52, a second lifting rod 53, a second connecting rod 54 and a driving rod 55. The sealing cylinder 51 is fixedly connected to the top of the oil tank 1. The sealing plate 52 is slidably fitted in the sealing cylinder 51. The side wall of the sealing plate 52 is sealed with the sealing cylinder 51. The sealing plate 52 is used to prevent insulating oil from entering the sealing cylinder 51. A closed cavity is formed between the sealing cylinder 51 and the sealing plate 52. The second lifting rod 53 is vertically distributed, and the top of the second lifting rod 53 is fixedly connected to the sealing plate 52. The second connecting rod 54 is horizontally distributed and fixedly connected to the second lifting rod 53. Each guide plate 31 is slidably matched with a driving rod 55, and a slide groove 551 is provided at the end of the driving rod 55. The slide grooves 551 are obliquely distributed. A plurality of sliders are provided on the second connecting rod 54, and each slider corresponds to a driving rod 55. Each slider is slidably matched in the corresponding slide groove 551. When the second connecting rod 54 moves up and down, the slider slides in the slide groove 551 and drives the driving rod 55 to move axially along the driving rod 55. The adjustment unit includes an adjustment plate 61 and a limit rod 62. Two adjustment plates 61 are arranged at intervals at the top and bottom of the guide plate 31. The adjustment plate 61 is slidably matched with the guide plate 31, and the adjustment plate 61 can move relative to the guide plate 31. Two matching grooves are arranged at intervals at the top and bottom of the guide plate 31, respectively. The adjustment plate 61 is slidably matched in the matching groove and can slide in the matching groove. The plurality of limit rods 62 are divided into two groups and are respectively arranged on both sides of the guide plate 31. The top and bottom ends of each limit rod 62 are fixedly connected to the corresponding adjustment plate 61. The limit rods 62 are vertically distributed. Each limit rod 62 corresponds to a guide vane 32. The limit rod 62 can stop against the corresponding guide vane 32, thereby limiting the rotation range of the guide vane 32. The top end of the guide plate 31 is rotatably matched with a driving gear 7. The driving gear 7 has a first tooth groove and a second tooth groove. The two adjustment plates 61 on both sides of the driving gear 7 are meshed with the first tooth groove. The driving rod 55 is meshed with the second tooth groove of the driving gear 7. The driving rod 55 can drive the driving gear 7 to rotate. The rotation of the driving gear 7 can drive the two adjustment plates 61 to rotate in the same direction or opposite directions. The adjustment plate 61 can drive the corresponding limit rod 62 to move.

[0047] The pressure in the sealed cavity is balanced with that in the oil tank 1. When the temperature of the insulating oil in the oil tank 1 increases, the volume of the insulating oil increases due to thermal expansion and contraction, which increases the pressure in the oil tank 1. The upward pressure from the insulating oil on the lower surface of the sealing plate 52 is greater than the downward pressure from the sealed cavity on the upper surface. Under the action of the pressure difference, the sealing plate 52 moves upward, and the second lifting rod 53 moves upward synchronously with the sealing plate 52, and drives the second connecting rod 54 to move upward. The upward movement of the second connecting rod 54 causes the slider to slide upward relatively along the slide groove 551, and the slider gradually approaches the slide groove. At the top of 551, the slider pushes the driving rod 55 away from the oil tank 1, the driving rod 55 drives the driving gear 7 to rotate, the driving gear 7 drives the adjusting plates 61 on both sides thereof to move, the adjusting plates 61 drive the limiting rod 62 to move, so that the limiting rod 62 is away from the guide vane 32. When the guide vane 32 is opened, the rotation range of the guide vane 32 is increased, thereby increasing the opening amplitude of the guide vane 32, improving the efficiency of the guide vane 32 in moving the insulating oil in the heat dissipation fin 2, and improving the exchange speed of the insulating oil in the heat dissipation fin 2 and the oil tank 1, thereby improving the heat dissipation efficiency and preventing the insulating oil from overheating. When the temperature of the insulating oil in the oil tank 1 decreases, the volume of the insulating oil decreases due to thermal expansion and contraction, and the pressure in the oil tank 1 decreases. The upward pressure from the insulating oil on the lower surface of the sealing plate 52 is less than the downward pressure from the closed cavity on the upper surface. Under the action of the pressure difference, the sealing plate 52 moves downward, and the second lifting rod 53 moves downward synchronously with the sealing plate 52, and drives the second connecting rod 54 to move downward. The downward movement of the second connecting rod 54 causes the slider to move downward along the slide groove 551, and the slider gradually approaches the bottom end of the slide groove 551. The driving rod 55 is pushed close to the oil tank 1, and the driving rod 55 drives the driving gear 7 to rotate, and the driving gear 7 drives the adjusting plate 61 to move, and the adjusting plate 61 drives the limiting rod 62 to move, so that the limiting rod 62 is close to the guide vane 32. When the guide vane 32 is opened, the rotation range of the guide vane 32 is reduced, thereby reducing the opening amplitude of the guide vane 32, reducing the efficiency of the guide vane 32 in moving the insulating oil in the heat sink fin 2, and reducing the exchange speed of the insulating oil between the heat sink fin 2 and the oil tank 1, thereby reducing the heat dissipation efficiency and preventing the rectifier transformer from being overcooled.

[0048] Two spaced support seats are also provided at the bottom of the oil tank 1, and the two support seats are distributed parallel to each other. Universal wheels 8 are provided at both ends of each support seat. The universal wheels 8 include a rotating seat and a roller. The top of the rotating seat is rotatably matched with the support seat, the rotating seat can rotate, and the roller cooperates with the rotating seat. The roller can be supported on the ground, and the rectifier transformer can be driven to move on the ground through the universal wheels 8.

[0049] The top of the oil tank 1 is also provided with lifting ears 9, and there are two lifting ears 9, which are spaced apart at the top of the oil tank 1. The external lifting device can use the lifting ears 9 to lift the rectifier transformer, thereby lifting the rectifier transformer.

[0050] According to the rectifier transformer of the embodiment of the present invention, external wires input alternating current into the rectifier transformer through the imported transformer, the imported transformer is used to adjust the voltage of the alternating current, and the rectifying component is used to convert the alternating current into direct current and output it externally. During the operation of the rectifier transformer, the heat generated by the imported transformer and the rectifying component is transferred to the insulating oil, so that the temperature of the insulating oil increases, and the heat is dissipated to the outside through the insulating oil. During the heat dissipation process, the insulating oil enters the heat dissipation fins 2, thereby increasing the heat dissipation area of ​​the rectifier transformer and improving the heat dissipation efficiency.

[0051] During the heat dissipation process, the driving member 41 drives the first lifting rod 42 to move up and down, and the first lifting rod 42 drives the first connecting rod 43 to reciprocate in the horizontal direction through the hinge rod 44. The guide plate 31 moves synchronously with the first connecting rod 43, so that the guide plate 31 moves back and forth in the heat dissipation fin 2 along the extension direction of the guide groove, and the guide plate 31 periodically approaches or moves away from the oil tank 1. In the process of the guide plate 31 approaching the oil tank 1, the guide plate 31 is out of contact with the heat dissipation fin, and a gap is generated between the two. The side of the guide blade 32 in the first guide blade group close to the guide plate 31 is subjected to the resistance of the insulating oil, and rotates relative to the guide plate 31 under the action of the resistance of the insulating oil. The guide blades 32 in the first guide blade group open outward until the guide blades 32 open to the limit, and the guide blades 32 in the second guide blade group move away. The side away from the guide plate 31 is subject to the resistance of the insulating oil, and is tightly attached to the guide plate 31 under the action of the resistance of the insulating oil. At this time, the guide blade 32 and the guide plate 31 approach the oil tank 1 synchronously, and can move the insulating oil in the first cavity 21 in the heat dissipation fin 2 into the oil tank 1 during the movement, and then the guide plate 31 moves in the opposite direction and gradually moves away from the oil tank 1. During this process, the side of the guide blade 32 in the second guide blade group close to the guide plate 31 is subject to the resistance of the insulating oil, and rotates relative to the guide plate 31 under the action of the resistance of the insulating oil. The guide blades 32 in the second guide blade group open outward and push the insulating oil in the second cavity 22 into the first cavity 21 through the gap between the guide plate and the heat dissipation fin. At the same time, the insulating oil in the oil tank 1 enters the second cavity 22, realizing the circulation of the insulating oil between the oil tank 1 and the heat dissipation fin 2.

[0052] When the heat dissipation efficiency is lower than the efficiency of heat generated by the rectifier transformer, the heat dissipated outward is less than the heat generated by the rectifier transformer, so that the temperature of the insulating oil gradually increases. Under the effect of thermal expansion and contraction, the volume of the insulating oil gradually increases, thereby gradually increasing the pressure in the oil tank 1. Under the effect of the pressure difference, the sealing plate 52 moves upward, and the second lifting rod 53 moves upward synchronously with the sealing plate 52, and drives the second connecting rod 54 to move upward. The second connecting rod 54 moves upward so that the slider slides upward along the slide groove 551, and the slider gradually approaches the top of the slide groove 551. The slider pushes the driving rod 55 away from the oil tank 1, the driving rod 55 drives the driving gear 7 to rotate, the driving gear 7 drives the adjusting plates 61 on both sides thereof to move, the adjusting plates 61 drive the limiting rod 62 to move, so that the limiting rod 62 is away from the guide vane 32. When the guide vane 32 is opened, the rotation range of the guide vane 32 is increased, thereby increasing the opening amplitude of the guide vane 32, improving the efficiency of the guide vane 32 in moving the insulating oil in the heat dissipation fin 2, and improving the exchange speed of the insulating oil in the heat dissipation fin 2 and the oil tank 1, thereby improving the heat dissipation efficiency and preventing the insulating oil from overheating.

[0053] In a cold environment, the heat dissipation efficiency of the insulating oil is greater than its heat dissipation efficiency in a normal temperature environment. When the heat dissipation efficiency is greater than the efficiency of heat generated by the rectifier transformer, the heat dissipated outward is greater than the heat generated by the rectifier transformer, and the temperature of the insulating oil gradually decreases. Under the effect of thermal expansion and contraction, the volume of the insulating oil gradually decreases, and the pressure in the oil tank 1 gradually decreases. Under the effect of the pressure difference, the sealing plate 52 moves downward, and the second lifting rod 53 moves downward synchronously with the sealing plate 52, and drives the second connecting rod 54 to move downward. The second connecting rod 54 moves downward, causing the slider to move downward along the slide groove 551, and the slider gradually approaches the slide groove 551. At the bottom end of the groove 551, the slider pushes the driving rod 55 close to the oil tank 1, the driving rod 55 drives the driving gear 7 to rotate, the driving gear 7 drives the adjusting plate 61 to move, and the adjusting plate 61 drives the limiting rod 62 to move, so that the limiting rod 62 is close to the guide vane 32. When the guide vane 32 is opened, the rotation range of the guide vane 32 is reduced, thereby reducing the opening amplitude of the guide vane 32, reducing the efficiency of the guide vane 32 in moving the insulating oil in the heat sink fin 2, and reducing the exchange speed of the insulating oil between the heat sink fin 2 and the oil tank 1, thereby reducing the heat dissipation efficiency and preventing the insulating oil temperature from being too low to affect the normal operation of the rectifier transformer.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A rectifier transformer, comprising: The transformer body includes an oil tank and heat dissipation fins. The side wall of the oil tank is provided with a plurality of heat dissipation fins. The oil tank is filled with insulating oil. The heat dissipation fins are hollow structures, and the interior thereof is connected with the oil tank. A guide assembly, wherein each of the heat dissipation fins is provided with a guide assembly, wherein the guide assembly comprises a guide plate and a guide vane, wherein the guide plate is slidably fitted in the heat dissipation fin, wherein a driving mechanism is provided in the transformer, wherein the driving mechanism is used to drive the guide plate to reciprocate in the heat dissipation fin, wherein the guide plate divides the heat dissipation fin into a first cavity and a second cavity, wherein the guide vane is provided at one side of the guide plate, and wherein the guide vane is rotationally fitted with the guide plate; A plurality of guide blades are provided on one side of the guide plate to form a guide blade group, and the guide blades in the guide blade group are distributed on the guide plate at intervals; The side wall of the guide plate is also provided with a plurality of accommodating grooves, the accommodating grooves correspond to the guide vanes, the accommodating grooves are rotatably connected to the guide vanes at the side wall away from the oil tank, and the side wall close to the oil tank is a curved surface structure; One end of the guide vane is provided with a rotating shaft, the rotating shaft is rotatably matched with the side wall of the accommodating groove, and the other end thereof is an arc-shaped structure; There is a gap between the arc-shaped end of the guide vane and the arc surface structure of the accommodating groove.

2. The rectifier transformer according to claim 1, characterized in that: The driving mechanism includes a driving member, a first lifting rod, a hinged rod and a first connecting rod. The driving member is arranged on the oil tank. The first lifting rod is connected to the output end of the driving member. The driving member is used to drive the first lifting rod to move up and down. The first connecting rod is connected to the plurality of guide plates. The first connecting rod and the first lifting rod are hinged through the hinged rod.

3. The rectifier transformer according to claim 2, characterized in that: An adjustment component is also provided, which includes a driving unit and an adjustment unit. The driving unit is used to drive the adjustment unit to operate. The adjustment unit includes an adjustment plate and a limit rod. The multiple limit rods are divided into two groups. The two groups of limit rods are respectively arranged on both sides of the guide plate. Each limit rod can stop with the corresponding guide blade. The limit rod is used to limit the rotation range of the guide blade. The top and bottom ends of each group of limit rods are provided with adjustment plates, and the adjustment plates are connected to the limit rods.

4. The rectifier transformer according to claim 3, characterized in that: The driving unit includes a sealing cylinder, a sealing plate, a second lifting rod, a second connecting rod and a driving rod. The sealing cylinder is arranged on the oil tank and is connected to the oil tank. The sealing plate is arranged in the sealing cylinder and slides with the sealing cylinder. A closed cavity is formed between the sealing plates. The sealing plate is connected to the second lifting rod, and the second lifting rod is connected to the second connecting rod. A driving rod is slidably fitted on each of the guide plates. A sliding groove is provided at the end of the driving rod. A plurality of sliders are provided on the second connecting rod, and each slider is slidably fitted with a sliding groove. A driving gear is rotatably fitted on the guide plate. The two adjustment plates on both sides of the same guide plate are meshed with the driving gear, and the driving rod is meshed with the driving gear.

5. The rectifier transformer according to claim 1, characterized in that: The heat dissipation fins are provided with guide grooves, and the guide plates are slidably fitted in the guide grooves.

6. The rectifier transformer according to claim 1, characterized in that: A universal wheel is arranged at the bottom of the oil tank, and the universal wheel can drive the oil tank to move in a horizontal plane.

7. The rectifier transformer according to claim 1, characterized in that: The oil tank is also provided with a lifting ring, and an external crane can lift the oil tank through the lifting ring.

Images