High-heat-dissipation type high-pulse rectifier transformer

Abstract

The invention belongs to the technical field of rectifier transformers, and particularly relates to a high-heat-dissipation type high-pulse rectifier transformer which comprises a transformer body, a PLC, a bottom air inlet assembly, a top air exhaust assembly, a filter protection assembly and an automatic ash removal assembly, and a plurality of temperature sensors are arranged in the transformer body. According to the invention, a plurality of groups of heat dissipation channels can be constructed in the transformer main body, and the heat dissipation air volume is optimally distributed according to the heat value difference of each area, so that the heat dissipation performance can reach the standard, and the energy consumption is effectively saved; and the blockage degree of the filtering assembly can be automatically recognized based on dynamic changes of the heat dissipation wind speed, the automatic replacement process can be triggered, the blocked filtering pore plate can be efficiently cleaned to recover the filtering performance, subsequent continuous replacement is facilitated, and it is ensured that dustproof protection work is efficient and stable.

Description

Technical Field

[0001] This invention belongs to the field of rectifier transformer technology, and in particular relates to a high heat dissipation high pulse rectifier transformer. Background Technology

[0002] High-pulse rectifier transformers are a special type of rectifier transformer, mainly used in applications requiring high-pulse DC output, such as electrolysis, electroplating, and power electronic converters. Building upon the conventional "transformation + rectification" principle of rectifier transformers, they significantly enhance the transformer's ability to withstand high-pulse loads, enabling stable operation under conditions of drastic periodic fluctuations in current / voltage. Under high-pulse conditions, rapid changes in current / voltage generate significant eddy current losses, hysteresis losses, and stray losses. These losses are far greater than those during normal steady-state operation, leading to a dramatic increase in heat generation per unit time. Therefore, efficient heat dissipation is crucial for the stable operation of high-pulse rectifier transformers; excessively high temperatures can directly damage equipment performance, shorten its lifespan, and even cause safety accidents.

[0003] Existing transformer cooling systems mostly employ a single air duct design, combined with natural air cooling or fixed-power forced air cooling, failing to adjust airflow according to the differences in heat distribution within the equipment. For example, traditional relay-controlled cooling systems start fans through fixed logic, using a uniform cooling airflow regardless of whether the heat generation in different areas of the transformer is balanced. This results in insufficient heat dissipation in high-heat areas (such as winding ends and core joints), creating temperature dead zones, while redundant airflow in low-heat areas leads to energy waste. Even some PLC-controlled cooling systems that achieve airflow regulation do not optimize airflow paths through multi-channel structures, still exhibiting an imbalance between heat dissipation efficiency and energy consumption. According to actual measurement data, the ineffective energy consumption of traditional cooling systems can reach over 50%. Furthermore, in enclosed or confined spaces, a single air duct design is prone to airflow short-circuiting, further reducing heat dissipation efficiency and failing to meet the heat dissipation requirements under high load or pulsed operating conditions. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-heat-dissipation high-pulse rectifier transformer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-heat-dissipation high-pulse rectifier transformer, comprising a transformer body and a PLC controller, wherein multiple temperature sensors are installed inside the transformer body, and further comprising:

[0006] The bottom air intake assembly is fixedly connected to the bottom of the transformer body;

[0007] The top exhaust assembly is fixedly connected to the top of the transformer body;

[0008] The filter protection component is fixedly connected to the bottom of the transformer body and is located at the air inlet end of the bottom air inlet component;

[0009] The automatic dust removal component is fixedly connected to one side of the bottom of the transformer body and is positioned directly above the filter protection component.

[0010] In the aforementioned high-heat-dissipation high-pulse rectifier transformer, the bottom air intake assembly includes an air intake duct disposed on the lower side of the transformer body. The bottom of the air intake duct is an open structure. An induced draft fan is fixedly installed on the bottom of the inner wall of the air intake duct. Multiple air intake pipes are fixedly connected to the upper side of the air intake duct. The air intake pipes are connected to the heat-generating area inside the transformer body. An electrically controlled regulating valve is installed on the air intake pipe. A wind speed sensor is also fixedly installed on the side wall of the air intake duct.

[0011] In the aforementioned high heat dissipation high pulse rectifier transformer, the top exhaust assembly includes an exhaust duct fixedly connected to the top of the transformer body. An exhaust fan is fixedly installed inside the exhaust duct. Multiple overlapping baffles are rotatably connected to the top of the inner wall of the exhaust duct via a rotating shaft. The end of the rotating shaft away from the baffles passes through the outside of the exhaust duct and is fixedly connected to an anti-detachment plate. A torsion return spring sleeved on the outside of the rotating shaft is fixedly connected between the anti-detachment plate and the exhaust duct.

[0012] In the above-mentioned high heat dissipation high pulse rectifier transformer, the filter protection component includes a drive shaft rotatably connected to the bottom of the transformer body. A motor rotation component for driving the drive shaft to rotate is fixedly installed at the bottom of the transformer body. A fixing plate is fixedly connected to the lower end of the drive shaft. Filter perforated plates are fixedly connected to both ends of the fixing plate. The filter perforated plates are located at the lower air inlet of the air inlet duct.

[0013] In the aforementioned high-heat-dissipation high-pulse rectifier transformer, the automatic dust removal assembly includes two L-shaped support rods fixedly connected to one side of the bottom of the transformer body. The lower ends of the two L-shaped support rods are fixedly connected to the same buffer shell. The lower end of the buffer shell is uniformly connected to multiple air blowers. The walls of the two L-shaped support rods are fixedly connected to the same support plate. The upper end of the buffer shell is fixedly connected to an air supply pipe. An air supply pump is installed on the air supply pipe, and the air supply pump is fixedly installed on the support plate.

[0014] In the aforementioned high heat dissipation high pulse rectifier transformer, two miniature electric actuators are symmetrically fixedly connected to the rear side of the air inlet duct, and the moving end of each miniature electric actuator is fixedly connected to an L-shaped baffle plate that is blocked at the lower end of the filter plate.

[0015] In the aforementioned high-heat-dissipation high-pulse rectifier transformer, four guide bearing seats are symmetrically fixedly connected to the opposite sides of the buffer shell. A vibrating rod is slidably sleeved inside the guide bearing seat. A vibrating block is fixedly connected to the lower end of the vibrating rod. A return spring sleeved outside the vibrating rod is fixedly connected between the vibrating block and the buffer shell. The upper ends of two vibrating rods on the same side are fixedly connected to the same force plate. The side wall of the support plate is fixedly connected to the same drive shell through multiple connecting rods. The drive shell is fixedly connected to the air supply pipe. A linkage shaft is rotatably sleeved on the side wall of the drive shell. Cams located directly above the force plate are fixedly connected to both ends of the linkage shaft. A power fan is fixedly sleeved on the shaft wall of the linkage shaft inside the drive shell.

[0016] In the aforementioned high-heat-dissipation high-pulse rectifier transformer, the size ratio of the air inlet duct to the air outlet duct is 1.1:1.

[0017] Compared with existing technologies, the advantages of this invention are as follows:

[0018] 1. By setting up the transformer body, bottom air intake components, and top exhaust components, multiple heat dissipation channels can be built inside the transformer body. Based on the difference in heat generation in each area, the heat dissipation air volume can be optimized and distributed to achieve effective energy saving while ensuring that the heat dissipation performance meets the standards.

[0019] 2. By setting up filter protection components and wind speed sensors, and by setting up dustproof filter protection at the air inlet, the equipment damage and life reduction caused by external dust and impurities entering the transformer can be avoided. It can also automatically identify the degree of blockage of the filter components based on the dynamic changes of the heat dissipation wind speed and trigger the automatic replacement process of the filter components.

[0020] 3. The automatic dust removal component can efficiently clean clogged filter plates, restoring their original filtration performance and facilitating subsequent replacement work, thus ensuring the high efficiency and stability of dust protection. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the combined installation of the bottom air inlet assembly, filter protection assembly, and automatic dust removal assembly of the present invention;

[0023] Figure 3 This is a rear-view three-dimensional structural diagram of the bottom air intake component of the present invention;

[0024] Figure 4 This is the present invention. Figure 3 A three-dimensional structural diagram of the installation of a miniature electric actuator and an L-shaped stop plate;

[0025] Figure 5 This is a three-dimensional cross-sectional view of the top exhaust assembly of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the filter protection component of the present invention;

[0027] Figure 7 This is a three-dimensional structural schematic diagram of the automatic dust removal component of the present invention;

[0028] Figure 8 yes Figure 7 A cross-sectional view of the drive housing.

[0029] In the diagram: 1 Transformer body, 2 Bottom air inlet assembly, 21 Air inlet duct, 22 Exhaust fan, 23 Air inlet pipe, 24 Electrically controlled regulating valve, 25 Wind speed sensor, 26 Miniature electric actuator, 27 L-shaped baffle plate, 3 Top exhaust assembly, 31 Exhaust duct, 32 Exhaust fan, 33 Rotating shaft, 34 Baffle plate, 35 Anti-detachment plate, 36 Torque return spring, 4 Filter protection assembly, 41 Drive shaft, 42 Motor rotation assembly, 43 Fixing plate, 44 Filter perforated plate, 5 Automatic dust removal assembly, 51 L-shaped support rod, 52 Buffer shell, 53 Air blower, 54 Support plate, 55 Air supply pipe, 56 Air supply pump, 57 Guide bearing seat, 58 Vibrating rod, 59 Vibrating block, 510 Return spring, 511 Force plate, 512 Connecting rod, 513 Drive shell, 514 Linkage shaft, 515 Cam, 516 Power impeller. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] like Figures 1-8 As shown, a high-heat-dissipation high-pulse rectifier transformer includes a transformer body 1 and a PLC controller. Multiple temperature sensors are installed inside the transformer body 1. It also includes:

[0032] The bottom air intake assembly 2 is fixedly connected to the bottom of the transformer body 1. The bottom air intake assembly 2 includes an air intake duct 21 set on the lower side of the transformer body 1. The bottom of the air intake duct 21 is an open structure. An induced draft fan 22 is fixedly installed on the bottom of the inner wall of the air intake duct 21. Multiple air intake pipes 23 are fixedly connected to the upper side of the air intake duct 21. The air intake pipes 23 are connected to the heating area inside the transformer body 1. An electrically controlled regulating valve 24 is installed on the air intake pipes 23. A wind speed sensor 25 is also fixedly installed on the side wall of the air intake duct 21. Two miniature electric actuators 26 are symmetrically fixedly connected to the rear side of the air intake duct 21. The moving end of the miniature electric actuator 26 is fixedly connected to an L-shaped baffle plate 27 that is connected to the lower end of the filter plate 44. The size ratio of the air intake duct 21 to the exhaust duct 31 is 1.1:1, so that the total area of ​​the air inlet is slightly larger than the total area of ​​the air outlet, avoiding insufficient air intake and weakened convection.

[0033] The top exhaust assembly 3 is fixedly connected to the top of the transformer body 1. The top exhaust assembly 3 includes an exhaust duct 31 fixedly connected to the top of the transformer body 1. An exhaust fan 32 is fixedly installed inside the exhaust duct 31. Multiple overlapping baffles 34 are rotatably connected to the top of the inner wall of the exhaust duct 31 via a rotating shaft 33. The end of the rotating shaft 33 away from the baffles 34 passes through the outside of the exhaust duct 31 and is fixedly connected to an anti-detachment plate 35. A torque return spring 36 sleeved on the outside of the rotating shaft 33 is fixedly connected between the anti-detachment plate 35 and the exhaust duct 31.

[0034] The filter protection component 4 is fixedly connected to the bottom of the transformer body 1 and is located at the air inlet end of the bottom air inlet component 2. The filter protection component 4 includes a drive shaft 41 rotatably connected to the bottom of the transformer body 1. A motor rotation component 42 for driving the drive shaft 41 to rotate is fixedly installed at the bottom of the transformer body 1. A fixing plate 43 is fixedly connected to the lower end of the drive shaft 41. Filter perforated plates 44 are fixedly connected to both ends of the fixing plate 43. The filter perforated plates 44 are located at the lower air inlet of the air inlet duct 21.

[0035] The automatic dust removal component 5 is fixedly connected to one side of the bottom of the transformer body 1 and positioned directly above the filter protection component 4. The automatic dust removal component 5 includes two L-shaped support rods 51 fixedly connected to one side of the bottom of the transformer body 1. The lower ends of the two L-shaped support rods 51 are fixedly connected to the same buffer shell 52. Multiple air blowers 53 are evenly fixedly connected to the lower end of the buffer shell 52. The walls of the two L-shaped support rods 51 are fixedly connected to the same support plate 54. An air supply pipe 55 is fixedly connected to the upper end of the buffer shell 52. An air supply pump 56 is installed on the air supply pipe 55 and fixedly mounted on the support plate 54. Four guide bearing seats 57 are symmetrically fixedly connected to opposite sides of the buffer shell 52. A vibrating rod 58 is slidably sleeved inside the 57. A vibrating block 59 is fixedly connected to the lower end of the vibrating rod 58. A return spring 510 sleeved outside the vibrating rod 58 is fixedly connected between the vibrating block 59 and the buffer shell 52. The upper ends of the two vibrating rods 58 on the same side are fixedly connected to the same force plate 511. The side wall of the support plate 54 is fixedly connected to the same drive shell 513 through multiple connecting rods 512. The drive shell 513 is fixedly connected to the air supply pipe 55. A linkage shaft 514 is rotatably sleeved on the side wall of the drive shell 513. Both ends of the linkage shaft 514 are fixedly connected to cams 515 located directly above the force plate 511. A power fan wheel 516 is fixedly sleeved on the shaft wall of the linkage shaft 514 located inside the drive shell 513.

[0036] The operating principle of the present invention is described as follows: When the transformer body 1 is working, the PLC controller synchronously controls the bottom air intake component 2 and the top exhaust component 3 to work. Multiple temperature sensors (not shown in the figure) corresponding to the heating area are installed in the transformer body 1 to confirm the real-time temperature change of each heating area. Based on the temperature signals fed back by each temperature sensor, the PLC controller confirms the total heating temperature and then automatically adjusts the working power of the exhaust fan 22 and the exhaust fan 32. The higher the total heating temperature, the higher the working power of the exhaust fan 22 and the exhaust fan 32, so as to meet the heat dissipation requirements.

[0037] The exhaust fan 22, together with the air inlet duct 21, draws external air into the transformer body 1. Multiple air inlet ducts 23 distribute the heat dissipation air to various heat-generating areas within the transformer body 1, forming multiple heat dissipation channels and efficiently dissipating heat to meet the heat dissipation needs of multiple heat-generating areas. The exhaust fan 32, together with the exhaust duct 31, generates suction at the top of the transformer, causing the air that has undergone heat exchange to be quickly discharged. Because cold air has a high density, it naturally sinks. The lower air inlet ensures that the cold air can cover the bottom of the equipment and gradually flow upwards to fully contact the heat-generating components. Hot air has a low density and rises after being heated. The upper air outlet can quickly capture the hot air and prevent it from lingering in the space.

[0038] The PLC controller also automatically adjusts the opening and closing of the electrically controlled regulating valve 24 on the air inlet duct 23 corresponding to the heat dissipation position based on the different temperature signals fed back by the temperature sensors in each area. The higher the temperature fed back by the temperature sensor in the corresponding area, the greater the opening and closing degree of the electrically controlled regulating valve 24 on the corresponding air inlet duct 23 controlled by the PLC controller, so that more heat dissipation air is distributed to this heat-generating area, realizing the rational distribution of heat dissipation airflow, and reducing the total heat dissipation energy consumption while ensuring heat dissipation performance.

[0039] One of the filter plates 44 in the filter protection assembly 4 contacts the lower end of the air inlet duct 21 to prevent the induced draft fan 22 from directly sucking dust and impurities in the outside air into the transformer body 1 when it draws in outside air, thereby damaging the transformer body 1. After the filter plate 44 contacts the lower end of the air inlet duct 21, the miniature electric push rod 26 installed on the outer wall of the air inlet duct 21 drives the L-shaped baffle plate 27 to move toward the filter plate 44, so that the L-shaped baffle plate 27 supports the lower end of the filter plate 44, and limits and locks the filter plate 44 to ensure the installation stability of the filter plate 44.

[0040] The wind speed sensor 25 in the bottom air intake assembly 2 monitors the wind speed generated by the induced draft fan 22 in real time and feeds back the signal to the PLC controller. The PLC controller compares the signal with the wind speed value that should be generated under the current working power of the induced draft fan 22. When the filter plate 44 is blocked, the air flow rate monitored by the wind speed sensor 25 will be smaller than the air flow rate that should be generated under the same working power of the induced draft fan 22. When this difference exceeds the preset threshold, the PLC controller controls the filter protection assembly 4 to replace the filter plate 44.

[0041] The PLC controller first controls the induced draft fan 22 and the exhaust fan 32 to stop working for 3 seconds. During these 3 seconds, the PLC controller first controls the micro electric actuator 26 to move the L-shaped baffle plate 27 away from the filter plate 44. Then, the PLC controller controls the motor rotation component 42 in the filter protection component 4 to drive the transmission shaft 41 to rotate 180 degrees, thereby moving the clean filter plate 44 on the other side to the lower end of the air inlet duct 21. Then, the micro electric actuator 26 is driven to move the L-shaped baffle plate 27 back, and the filter plate 44 is fixed again, realizing the quick replacement of the filter plate 44.

[0042] The replaced dirty filter plate 44 moves directly below the automatic dust removal assembly 5. The PLC controller controls the air supply pump 56 to operate. The air supply pump 56, in conjunction with the air supply pipe 55, supplies air into the buffer housing 52. This air is then sprayed out through multiple blowers 53 to blow off the impurities clogging the filter plate 44. When the air supply pipe 55 supplies air to the buffer housing 52, the high-pressure air flows through the drive housing 513, causing the power impeller 516 installed inside the drive housing 513 to rotate. The power impeller 516 drives two cams 515 to rotate synchronously via the linkage shaft 514. When the cams 515... When the protrusion of the cam 515 contacts the force plate 511, the force plate 511 will drive the vibrating rod 58 and the vibrating block 59 to move downward against the elastic force of the return spring 510, so that the vibrating block 59 will slightly impact the filter plate 44. When the protrusion of the cam 515 leaves the force plate 511, under the action of the return spring 510, it will push the force plate 511 to drive the vibrating rod 58 and the vibrating block 59 to move upward and reset, so that the vibrating block 59 will continuously tap the filter plate 44, thereby helping the dirt and impurities accumulated on the filter plate 44 to be quickly removed, improving the cleaning efficiency and quality of the filter plate 44.

[0043] When the transformer body 1 is not working, the PLC controller controls the induced draft fan 22 and the exhaust fan 32 to stop operating. As the exhaust duct 31 loses its exhaust force, the multiple baffles 34 change from a vertical state to an inclined overlapping state under the return action of the torsion return spring 36, sealing and protecting the port of the exhaust duct 31 to prevent external impurities and rainwater from entering the exhaust duct 31 and affecting its service life.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-heat-dissipation high-pulse rectifier transformer, comprising a transformer body (1) and a PLC controller, wherein multiple temperature sensors are installed inside the transformer body (1), characterized in that, Also includes: The bottom air intake assembly (2) is fixedly connected to the bottom of the transformer body (1); The top exhaust assembly (3) is fixedly connected to the top of the transformer body (1); The filter protection component (4) is fixedly connected to the bottom of the transformer body (1) and is located at the air inlet end of the bottom air inlet component (2); The automatic dust removal component (5) is fixedly connected to the bottom side of the transformer body (1) and is positioned directly above the filter protection component (4).

2. The high heat dissipation high-pulse rectifier transformer according to claim 1, characterized in that, The bottom air intake assembly (2) includes an air intake duct (21) disposed on the lower side of the transformer body (1). The bottom of the air intake duct (21) is an open structure. An induced draft fan (22) is fixedly installed on the bottom of the inner wall of the air intake duct (21). Multiple air intake pipes (23) are fixedly connected to the upper side of the air intake duct (21). The air intake pipes (23) are connected to the heating area inside the transformer body (1). An electrically controlled regulating valve (24) is installed on the air intake pipes (23). A wind speed sensor (25) is also fixedly installed on the side wall of the air intake duct (21).

3. The high heat dissipation high-pulse rectifier transformer according to claim 2, characterized in that, The top exhaust assembly (3) includes an exhaust duct (31) fixedly connected to the top of the transformer body (1). An exhaust fan (32) is fixedly installed inside the exhaust duct (31). Multiple overlapping baffles (34) are rotatably connected to the top of the inner wall of the exhaust duct (31) via a rotating shaft (33). The end of the rotating shaft (33) away from the baffles (34) passes through the outside of the exhaust duct (31) and is fixedly connected to an anti-detachment plate (35). A torsion return spring (36) sleeved on the outside of the rotating shaft (33) is fixedly connected between the anti-detachment plate (35) and the exhaust duct (31).

4. A high-heat-dissipation high-pulse rectifier transformer according to claim 2, characterized in that, The filter protection assembly (4) includes a drive shaft (41) rotatably connected to the bottom of the transformer body (1). A motor rotation assembly (42) for driving the drive shaft (41) to rotate is fixedly installed at the bottom of the transformer body (1). A fixing plate (43) is fixedly connected to the lower end of the drive shaft (41). Filter plates (44) are fixedly connected to both ends of the fixing plate (43). The filter plates (44) are located at the lower air inlet of the air inlet duct (21).

5. A high-heat-dissipation high-pulse rectifier transformer according to claim 1, characterized in that, The automatic dust removal assembly (5) includes two L-shaped support rods (51) fixedly connected to one side of the bottom of the transformer body (1). The lower ends of the two L-shaped support rods (51) are fixedly connected to the same buffer shell (52). The lower end of the buffer shell (52) is evenly connected to multiple blowers (53). The rod walls of the two L-shaped support rods (51) are fixedly connected to the same support plate (54). The upper end of the buffer shell (52) is fixedly connected to an air supply pipe (55). An air supply pump (56) is installed on the air supply pipe (55). The air supply pump (56) is fixedly installed on the support plate (54).

6. A high-heat-dissipation high-pulse rectifier transformer according to claim 4, characterized in that, Two miniature electric actuators (26) are symmetrically fixedly connected to the rear side of the air inlet duct (21), and the moving end of the miniature electric actuator (26) is fixedly connected to an L-shaped baffle plate (27) that is blocked at the lower end of the filter plate (44).

7. A high-heat-dissipation high-pulse rectifier transformer according to claim 5, characterized in that, Four guide bearing seats (57) are symmetrically fixedly connected to opposite sides of the buffer shell (52). A vibrating rod (58) is slidably sleeved inside each guide bearing seat (57). A vibrating block (59) is fixedly connected to the lower end of each vibrating rod (58). A return spring (510) sleeved outside the vibrating rod (58) is fixedly connected between the vibrating block (59) and the buffer shell (52). The upper ends of two vibrating rods (58) on the same side are fixedly connected to the same force-bearing plate (511). The side wall of the pallet (54) is fixedly connected to the same drive housing (513) by multiple connecting rods (512). The drive housing (513) is fixedly connected to the air supply pipe (55). The side wall of the drive housing (513) is rotatably sleeved with a linkage shaft (514). Both ends of the linkage shaft (514) are fixedly connected to a cam (515) located directly above the force plate (511). The shaft wall of the linkage shaft (514) located inside the drive housing (513) is fixedly sleeved with a power impeller (516).

8. A high-heat-dissipation high-pulse rectifier transformer according to claim 2, characterized in that, The size ratio of the air inlet duct (21) to the air outlet duct (31) is 1.1:1.

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