An overload protection device for low-voltage distribution transformer of distribution line

Abstract

This invention provides an overload protection device for a distribution transformer in a low-voltage power distribution line, belonging to the field of transformer technology. It includes a housing A, to which housing B is connected via a plug-in assembly. A water collection tank is fixedly connected to the outer wall of housing A, and a water collection hopper is fixedly connected to the inner wall of housing B. The device also includes: a dustproof electric fan symmetrically and fixedly connected to the outer walls of housing A and housing B; and a cooling assembly comprising a pump fixedly connected to the outer wall of housing A, with an output pipe fixedly connected to the pump outlet and an input pipe fixedly connected to the pump inlet, the input pipe being fixedly connected to the water collection tank. In this invention, the plug-in assembly allows for quick assembly, installation, and disassembly of housing A and housing B, facilitating transportation and on-site inspection and maintenance of internal components. The overall structural design makes installation and maintenance more efficient and convenient.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more specifically, to an overload protection device for a low-voltage distribution line transformer. Background Technology

[0002] A transformer mainly consists of two parts: the iron core and the windings. The iron core is generally made of stacked silicon steel sheets, and its function is to provide a low magnetic resistance path for magnetic flux, enhancing the effect of electromagnetic induction. The windings are usually divided into primary windings and secondary windings. The primary winding is connected to the AC power supply, while the secondary winding outputs the transformed electrical energy. The windings are generally made of copper or aluminum wires with good conductivity. Transformers often face many risks such as external collisions, damage from small animals, erosion from wind, sand and rain, and accidental contact by personnel. These factors can easily damage them, affect normal operation, and even cause safety accidents. Therefore, nowadays, they are often equipped with an outer casing to enhance the protection of transformers.

[0003] Distribution transformers also face overload risks during operation. Current overload protection technologies mainly rely on current transformers to monitor the transformer's current. These current transformers are installed on the transformer's input or output lines, collecting current data in real time and transmitting it to the controller. When the detected current exceeds a preset overload threshold, the controller initiates protection actions. Common protection actions include disconnecting the transformer's input or output circuits to prevent excessive current from continuously flowing through the transformer and avoid overheating and burning out the windings. However, existing overload protection devices have certain limitations. In complex power distribution environments, such as those with harmonic interference or instantaneous current surges, misjudgments are prone to occur. If the overload persists for a long time, even if the circuit is disconnected, a large amount of heat accumulates inside the transformer.

[0004] In low-voltage power distribution lines, distribution transformers often face numerous problems. 1. Existing transformers come in various sizes, requiring matching transformers of different sizes for installation, leading to high production costs. 2. Transformers are greatly affected by ambient temperature; traditional heat dissipation methods are inefficient at high temperatures. 3. Transformer operation is significantly affected by ambient temperature. In high-temperature environments, the heat dissipation burden on transformers increases, making it difficult to dissipate heat in time, easily causing internal components to overheat. Especially with existing transformers having long overload periods, internal heat accumulates rapidly, affecting insulation performance and accelerating aging. At low temperatures, transformer oil viscosity increases, and components become brittle, hindering normal startup and operation.

[0005] Therefore, there is an urgent need for an overload protection device for low-voltage power distribution line transformers to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an overload protection device for a low-voltage power distribution line transformer to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0008] An overload protection device for a low-voltage distribution line transformer includes a housing A, a housing B connected to housing A via a plug-in assembly, a water collection tank fixedly connected to the outer wall of housing A, a water collection hopper fixedly connected to the inner wall of housing B, and a water outlet groove formed on the outer wall of housing A. The device also includes:

[0009] Dustproof electric fans are symmetrically and fixedly connected to the outer walls of cabinet A and cabinet B;

[0010] A cooling assembly includes a pump fixedly connected to the outer wall of a housing A. The pump outlet is fixedly connected to an output pipe, the pump inlet is fixedly connected to an input pipe, and the input pipe is fixedly connected to a water collection tank. The end of the output pipe away from the pump outlet passes through the housing A and is fixedly connected to a water pipe A. The outer wall of the water pipe A is fixedly connected to evenly distributed condenser tubes, and the condenser tubes are fixedly connected to the housing A. The outer wall of the condenser tubes is fixedly connected to a water pipe B.

[0011] Heating tubes are uniformly and fixedly connected to the inner wall of box B, and the heating tubes are used in conjunction with the cooling components;

[0012] Adjust the installation components and set them on the inner walls of housing A and housing B.

[0013] As a preferred technical solution of this application, the plug-in assembly includes a main connecting block and a secondary connecting block symmetrically and fixedly connected to the outer walls of housing A and housing B. A ratchet plate is fixedly connected to the outer wall of the secondary connecting block, and the ratchet plate is slidably connected to the main connecting block. A locking block is slidably connected to the inner wall of the main connecting block, and the outer wall of the locking block abuts against the outer wall of the ratchet plate. A symmetrically distributed pulling block is slidably connected to the inner wall of the locking block. A connecting rod is fixedly connected to the outer wall of the pulling block. A pull rod is fixedly connected to the end of the connecting rod away from the pulling block. A limiting plate is slidably connected to the outer wall of the connecting rod, and the limiting plate is fixedly connected to the main connecting block.

[0014] As a preferred technical solution of this application, the adjustment and installation assembly includes fixed plates symmetrically fixedly connected to the inner walls of housing A and housing B, symmetrically distributed guide plates fixedly connected between the symmetrical fixed plates, symmetrically distributed guide blocks slidably connected to the outer walls of the guide plates, a bidirectional screw threadedly connected to the inner wall of the guide block, and the bidirectional screw rotatably connected to the fixed plate, a knob fixedly connected to the outer wall of the bidirectional screw, and symmetrically distributed linkage plates rotatably connected to the outer wall of the guide block, with a positioning frame rotatably connected to the end of the linkage plate away from the guide block.

[0015] As a preferred technical solution of this application, a strong spring is sleeved on the outer wall of the pull rod, a strong spring is sleeved on the outer wall of the connecting rod, and one end of the strong spring is fixedly connected to the limiting plate, and the other end of the strong spring away from the limiting plate is fixedly connected to the locking block.

[0016] As a preferred technical solution of this application, the outer wall of the positioning frame is slidably connected with symmetrically distributed guide rods, and the guide rods are fixedly connected to box A and box B.

[0017] As a preferred technical solution of this application, both the outer walls of the condenser tube and the heating tube are fixedly connected with an isolation plate, and both the box A and the box B are fixedly connected to the isolation plate.

[0018] As a preferred technical solution of this application, a transformer body is arranged between the symmetrical positioning frames.

[0019] As a preferred technical solution of this application, water flow channels are provided between the heating tube and the box B, and between the condenser tube and the box A, and the water flow channels are connected to the water outlet tank.

[0020] As a preferred technical solution of this application, a temperature sensor A is fixedly connected to the inner wall of the box A, and a temperature sensor B is fixedly connected to the inner wall of the box B.

[0021] As a preferred technical solution of this application, both the inner walls of the box A and the box B are provided with evenly distributed ventilation openings.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In the scheme of this application:

[0024] 1. By setting up adjustable installation components, the installation and fixing of transformers are facilitated, which can adapt to transformers of different specifications and sizes, improving the versatility of the device. In addition, when it is necessary to carry out maintenance operations such as transformer inspection and replacement, the positioning frame can be adjusted to disassemble and reinstall the transformer more conveniently, reducing the difficulty and workload of maintenance. It also facilitates the assembly and disassembly of the device, solving the problem that in the existing technology, different transformer specifications and sizes require matching transformers of different sizes for installation, resulting in high production costs.

[0025] 2. By setting up a dustproof electric fan and changing its direction, enclosure A and enclosure B respectively act as the air inlet and outlet, thereby achieving ventilation and heat dissipation for the transformer body 31 inside the enclosure. While the dustproof electric fan promotes ventilation and heat dissipation, water flows inside the condenser tube. The water is recycled rainwater collected in the water collection tank as the water source for the condenser tube, reducing water consumption. Furthermore, the rainwater is used for heat exchange in the condenser tube to assist in cooling, eliminating the need for additional large amounts of electricity for cooling. The combination of these two aspects allows the entire device to effectively control energy consumption while ensuring the temperature regulation function of the transformer body 31, achieving energy-saving operation, reducing the waste of electrical resources, and solving the problem in the existing technology that transformers are greatly affected by ambient temperature and that traditional heat dissipation methods are inefficient at high temperatures.

[0026] 3. By using temperature sensors A and B, the internal temperature of the transformer enclosure can be monitored in real time, achieving accurate temperature feedback. Enclosure A is a heating chamber, and enclosure B is a cooling chamber. The two enclosures work together to ensure that the transformer body 31 always operates within a suitable temperature range. This avoids problems such as overload and overheating damage due to excessively high temperatures, or performance and startup issues due to excessively low temperatures. This ensures the stable operation of the transformer body 31, extends its service life, and solves the problems in existing technologies where transformer operation is significantly affected by ambient temperature. In high-temperature environments, the transformer's heat dissipation burden increases, and heat is difficult to dissipate in time, easily leading to overheating of internal components. In particular, existing transformers have long overload periods, resulting in rapid heat accumulation inside the transformer, affecting insulation performance and accelerating aging. At low temperatures, the transformer oil viscosity increases, and components become brittle, which can hinder normal startup and operation.

[0027] 4. The plug-in assembly allows for quick assembly, installation, and disassembly of housing A and housing B, facilitating transportation and on-site inspection and maintenance of internal components. The overall structural design makes the installation and maintenance process more efficient and convenient. Attached Figure Description

[0028] Figure 1 A schematic diagram of the overall structure of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0029] Figure 2 A schematic diagram of the internal structure of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0030] Figure 3 A schematic diagram of the water collection bucket section of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0031] Figure 4 A schematic diagram of the outlet section of the overload protection device for the low-voltage power distribution transformer provided in this application;

[0032] Figure 5 A schematic diagram of the ventilation opening portion of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0033] Figure 6 A cross-sectional view of the secondary connection block of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0034] Figure 7 A cross-sectional view of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0035] Figure 8 A schematic diagram of the heating tube portion of the overload protection device for the low-voltage power distribution transformer provided in this application;

[0036] Figure 9 A cross-sectional view of the enclosure B of the overload protection device for the low-voltage power distribution line transformer provided in this application;

[0037] Figure 10 A schematic diagram of the transformer body structure of the overload protection device for the low-voltage power distribution transformer provided in this application;

[0038] Figure 11 A schematic diagram of the positioning frame structure of the overload protection device for the low-voltage power distribution line transformer provided in this application.

[0039] The image shows:

[0040] 1. Housing A; 2. Housing B; 3. Secondary connecting block; 4. Main connecting block; 5. Racket plate; 6. Locking block; 7. Pulling rod; 8. Connecting rod; 9. Strong spring; 10. Dustproof electric fan; 11. Pump; 12. Output pipe; 13. Input pipe; 14. Water collection hopper; 15. Water collection tank; 16. Heating tube; 17. Condenser tube; 18. Isolation plate; 19. Water outlet; 20. Ventilation port; 21. Water pipe A; 22. Water pipe B; 23. Guide rod; 24. Positioning frame; 25. Fixing plate; 26. Bidirectional screw; 27. Guide plate; 28. Guide block; 29. ​​Linkage plate; 30. Knob; 31. Transformer body; 32. Temperature sensor A; 33. Temperature sensor B; 34. Pulling block; 35. Water flow channel; 36. Limit plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] like Figures 1-11As shown, this embodiment proposes an overload protection device for a low-voltage distribution line transformer, including a housing A1, housing A1 connected to housing B2 via a plug-in assembly, a water collection tank 15 fixedly connected to the outer wall of housing A1, a water collection hopper 14 fixedly connected to the inner wall of housing B2, and a water outlet groove 19 formed on the outer wall of housing A1. It also includes:

[0043] Dustproof electric fan 10 is symmetrically and fixedly connected to the outer walls of cabinet A1 and cabinet B2;

[0044] The cooling assembly includes a pump 11 fixedly connected to the outer wall of housing A1. An output pipe 12 is fixedly connected to the outlet of pump 11, and an input pipe 13 is fixedly connected to the inlet of pump 11. The input pipe 13 is fixedly connected to a water collection tank 15. The end of the output pipe 12 away from the outlet of pump 11 passes through housing A1 and is fixedly connected to a water pipe A21. Evenly distributed condenser pipes 17 are fixedly connected to the outer wall of water pipe A21 and are fixedly connected to housing A1. A water pipe B22 is fixedly connected to the outer wall of condenser pipes 17. Housings A1 and B2 respectively monitor the temperature of the transformer body 31 through temperature sensors A32 and B33. When the temperature inside housings A1 and B2 rises, temperature sensors A32 and B33... 3. Sensing a temperature change, if the temperature exceeds the set suitable temperature value, pump 11 is activated. Water from the water collection tank 15 enters pump 11 through input pipe 13, and then pump 11 delivers the water to water pipe A21 through output pipe 12. The water then flows into condenser pipes 17, which are evenly distributed inside and fixedly connected to housing A1. The water flows through condenser pipes 17 to remove heat, thus cooling the internal space of housing A1 and housing B2. After heat exchange, the water flows out through water pipe B22, which may eventually be discharged from the device or recycled. At the same time, the dustproof electric fan 10 rotates, promoting air circulation inside and outside housing A1 and housing B2, accelerating heat dissipation, and further enhancing the cooling effect. At this time, the dustproof electric fan 10 on housing A1 draws air inward, and housing B2... The dustproof electric fan 10 on the transformer body 31 exhausts air outwards. When the temperature inside enclosures A1 and B2 is low, below the set suitable temperature value, it is detected by temperature sensors A32 and B33, activating the heating element 16. The heating element 16 begins to heat up, raising the temperature of the internal space of enclosures A1 and B2 to a suitable operating range for the transformer body 31. The heating element 16 works in conjunction with the cooling components, meaning that it can flexibly switch between cooling and heating operations according to the actual temperature situation, maintaining a relatively stable temperature environment inside the enclosures. At this time, the dustproof electric fan 10 on enclosure B2 intakes air and the dustproof electric fan 10 on enclosure A1 exhausts air. When the transformer body 31 is overloaded, the overload will cause current... Excessive heat generation due to overload will cause rapid heat accumulation inside the transformer body 1 and the tanks A1 and B2. Temperature sensors A32 and B33 can monitor not only the temperature during normal operation but also the internal heat accumulation in real time after an overload occurs. If the temperature continues to rise due to heat accumulation and exceeds the set warning value, the cooling components will increase their workload. Pump 11 will increase its pumping speed, increasing the water flow in the condenser tube 17, and the dustproof electric fan 10 will also increase its speed to quickly remove heat. This prevents further damage to the transformer's internal windings, core, and other components caused by excessive heat accumulation, such as accelerated insulation aging and decreased core performance. This effectively reduces the risk of overheating failures caused by overload.Extending the service life of transformer body 1 ensures a stable power supply for low-voltage distribution lines;

[0045] Heating tubes 16 are evenly and fixedly connected to the inner wall of the box B2, and heating tubes 16 are matched with cooling components;

[0046] Adjust the installation components and set them on the inner walls of housing A1 and housing B2.

[0047] like Figure 6-7 As shown, in a preferred embodiment, based on the above method, the plug-in assembly further includes a main connecting block 4 and a secondary connecting block 3 symmetrically fixedly connected to the outer walls of housing A1 and housing B2. A ratchet plate 5 is fixedly connected to the outer wall of the secondary connecting block 3, and the ratchet plate 5 is slidably connected to the main connecting block 4. A locking block 6 is slidably connected to the inner wall of the main connecting block 4, and the outer wall of the locking block 6 abuts against the outer wall of the ratchet plate 5. Symmetrically distributed pulling blocks 34 are slidably connected to the inner wall of the locking block 6. A connecting rod 8 is fixedly connected to the outer wall of the pulling block 34. A pull rod 7 is fixedly connected to the end of the connecting rod 8 away from the pulling block 34. A limiting plate 36 is slidably connected to the outer wall of the connecting rod 8, and the limiting plate 36... 6 is fixedly connected to the main connecting block 4, and the connection between the box A1 and the box B2 is realized through the plug-in assembly. The ratchet plate 5 on the outer wall of the auxiliary connecting block 3 slides with the main connecting block 4. The locking block 6 slides on the inner wall of the main connecting block 4 and abuts against the outer wall of the ratchet plate 5. Under the action of the strong spring 9, the locking block 6 can stably lock the ratchet plate 5, so that the box A1 and the box B2 are tightly connected. When disassembly is required, pull the lever 7. The lever 7 drives the pulling block 34 through the connecting rod 8, and then pulls the locking block 6 to overcome the elastic force of the strong spring 9, so that the locking block 6 is disengaged from the ratchet plate 5, and the box A1 and the box B2 can be separated. The elastic force of the strong spring 9 is much greater than the weight of the locking block 6.

[0048] like Figure 10-11As shown, in a preferred embodiment, based on the above method, the adjustment and installation assembly further includes fixed plates 25 symmetrically fixedly connected to the inner walls of housing A1 and housing B2. Symmetrically distributed guide plates 27 are fixedly connected between the symmetrical fixed plates 25. Symmetrically distributed guide blocks 28 are slidably connected to the outer walls of the guide plates 27. A bidirectional screw 26 is threadedly connected to the inner wall of the guide block 28, and the bidirectional screw 26 is rotatably connected to the fixed plates 25. A knob 30 is fixedly connected to the outer wall of the bidirectional screw 26. Symmetrically distributed linkage plates 29 are rotatably connected to the outer wall of the guide blocks 28. A positioning device is rotatably connected to the end of the linkage plate 29 away from the guide block 28. The frame 24 uses an adjustment mounting assembly to fix the transformer body 31. Specifically, rotating the knob 30 causes the bidirectional screw 26 to rotate. Since the bidirectional screw 26 is rotatably connected to the fixing plate 25 and its outer wall is threadedly engaged with the guide block 28, under the guidance of the guide plate 27, the two guide blocks 28 will move in opposite directions. The guide blocks 28 drive the positioning frame 24 to slide along the guide rod 23 through the linkage plate 29, thereby adjusting the distance between the two positioning frames 24 to accommodate transformer bodies 31 of different sizes and stably fix them in the appropriate positions inside the housing A1 and housing B2.

[0049] like Figure 7 As shown, in a preferred embodiment, based on the above method, a strong spring 9 is further provided on the outer wall of the connecting rod 8, and one end of the strong spring 9 is fixedly connected to the limiting plate 36, and the other end of the strong spring 9 away from the limiting plate 36 is fixedly connected to the locking block 6. The locking block 6 is automatically locked onto the ratchet plate 5 by means of the strong spring 9.

[0050] like Figure 10 As shown, in a preferred embodiment, based on the above method, the positioning frame 24 is further provided with symmetrically distributed guide rods 23 slidably connected to its outer wall, and the guide rods 23 are fixedly connected to the housing A1 and housing B2, and the guide rods 23 provide directional support force for the movement of the positioning frame 24.

[0051] like Figure 2 and Figure 8 As shown, in a preferred embodiment, based on the above method, the outer walls of the condenser tube 17 and the heating tube 16 are both fixedly connected to the insulating plate 18, and the boxes A1 and B2 are both fixedly connected to the insulating plate 18. The insulating plate 18 achieves the sealing of the connection between the boxes A1 and B2.

[0052] like Figure 2 As shown, in a preferred embodiment, based on the above method, a transformer body 31 is further provided between the symmetrical positioning frames 24, and the transformer body 31 is installed and fixed by the positioning frames 24.

[0053] like Figure 9As shown, in a preferred embodiment, based on the above method, a water flow channel 35 is further provided between the heating pipe 16 and the box B2, and between the condenser pipe 17 and the box A1. The water flow channel 35 is connected to the water outlet 19. Rainwater flows through the water collection hopper 14 into the water flow channel 35 and finally flows into the water collection tank 15.

[0054] like Figure 5 As shown, in a preferred embodiment, based on the above method, a temperature sensor A32 is fixedly connected to the inner wall of the housing A1, and a temperature sensor B33 is fixedly connected to the inner wall of the housing B2. The internal temperature of the equipment is detected by temperature sensor A32 and temperature sensor B33.

[0055] like Figure 5 As shown, in a preferred embodiment, based on the above method, both the inner walls of the box A1 and the box B2 are provided with evenly distributed ventilation openings 20, which facilitate the delivery of hot or cold air into the space formed by the box A1 and the box B2.

[0056] Specifically, when using the overload protection device for the distribution transformer of this low-voltage power distribution line: the transformer body 31 is fixed by adjusting the mounting components. Specifically, rotating the knob 30 causes the bidirectional screw 26 to rotate. Since the bidirectional screw 26 is rotatably connected to the fixing plate 25 and its outer wall is threadedly engaged with the guide block 28, under the guiding action of the guide plate 27 on the guide block 28, the two guide blocks 28 will move in opposite directions. The guide block 28 drives the positioning frame 24 to slide along the guide rod 23 through the linkage plate 29, thereby adjusting the distance between the two positioning frames 24 to accommodate transformer bodies 31 of different sizes and stably fix them in the appropriate positions inside the enclosure A1 and enclosure B2; the enclosure A1 is fixed by the plug-in component. 1. The connection between housing A1 and housing B2 is achieved through a sliding engagement between the ratchet plate 5 on the outer wall of the auxiliary connecting block 3 and the main connecting block 4. The locking block 6 slides on the inner wall of the main connecting block 4 and abuts against the outer wall of the ratchet plate 5. Under the action of the strong spring 9, the locking block 6 can stably and securely hold the ratchet plate 5, thus tightly connecting housing A1 and housing B2. When disassembly is required, pull the lever 7. The lever 7, through the connecting rod 8, drives the pulling block 34, which in turn pulls the locking block 6 to overcome the elastic force of the strong spring 9, causing the locking block 6 to disengage from the ratchet plate 5, thereby separating housing A1 and housing B2. Housing A1 and housing B2 respectively monitor the temperature of the transformer body 31 through temperature sensors A32 and B33. When the temperature inside housing A1 and housing B2 rises, temperature sensors A32 and B33 will trigger a temperature sensor to activate the sensor. Temperature sensor B33 detects a temperature change. When the temperature exceeds the set suitable temperature value, pump 11 is activated. Water from water tank 15 enters pump 11 through input pipe 13, and then pump 11 delivers the water to water pipe A21 through output pipe 12. The water then flows into condenser pipes 17, which are evenly distributed inside and fixedly connected to housing A1. The water flows through condenser pipes 17 to remove heat, thus cooling the interior spaces of housing A1 and housing B2. After heat exchange, the water flows out through water pipe B22, which may eventually be discharged from the device or recycled. At the same time, dustproof electric fan 10 rotates, promoting air circulation inside and outside housing A1 and housing B2, accelerating heat dissipation, and further enhancing the cooling effect. The dustproof electric fan 10 on enclosure B2 draws air inwards and exhausts air outwards. When the temperature inside enclosures A1 and B2 is low, i.e. below the set suitable temperature value, it is sensed by temperature sensors A32 and B33, and the heating tube 16 is activated. The heating tube 16 starts to heat up and raises the temperature of the internal space of enclosures A1 and B2, so that the ambient temperature inside enclosures A1 and B2 reaches the range suitable for the operation of transformer body 31. The heating tube 16 works in conjunction with the cooling components, which means that it can flexibly switch between cooling and heating operations according to the actual temperature situation to maintain a relatively stable temperature environment inside the enclosure. At this time, the dustproof electric fan 10 on enclosure B2 draws air inwards and the dustproof electric fan 10 on enclosure A1 exhausts air outwards.The two operation modes can be flexibly switched to achieve constant temperature regulation inside the enclosure, ensuring that the transformer body 31 always operates within a suitable temperature range. This avoids problems such as overload or overheating damage due to excessively high temperatures, or performance and startup issues caused by excessively low temperatures, thus guaranteeing the stable operation of the transformer body 31. Rainwater flows through the water collection hopper 14 into the water flow channel 35, and finally into the water collection tank 15.

[0057] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An overload protection device for a low-voltage distribution line transformer, comprising a housing A (1), characterized in that, Box A (1) is connected to box B (2) via a plug-in assembly. A water collection tank (15) is fixedly connected to the outer wall of box A (1). A water collection hopper (14) is fixedly connected to the inner wall of box B (2). A water outlet groove (19) is opened on the outer wall of box A (1). The box also includes: a dustproof electric fan (10), which is symmetrically fixedly connected to the outer walls of box A (1) and box B (2); a cooling assembly, which includes a pump (11) fixedly connected to the outer wall of box A (1). The outlet of the pump (11) is fixedly connected to an output pipe (12), and the inlet of the pump (11) is fixedly connected to an input pipe (13). The input pipe (13) is fixedly connected to the water collection tank (15). The end of the output pipe (12) away from the outlet of the pump (11) passes through the box body A (1) and is fixedly connected to the water pipe A (21). The outer wall of the water pipe A (21) is fixedly connected to the evenly distributed condenser pipes (17), and the condenser pipes (17) are fixedly connected to the box body A (1). The outer wall of the condenser pipes (17) is fixedly connected to the water pipe B (22). The heating pipe (16) is evenly fixedly connected to the inner wall of the box body B (2), and the heating pipe (16) is matched with the cooling component. The adjustment and installation component is set on the inner wall of the box body A (1) and the box body B (2). The adjustment and installation assembly includes a fixing plate (25) symmetrically fixedly connected to the inner walls of housing A (1) and housing B (2), a guide plate (27) symmetrically distributed between the fixing plates (25), a guide block (28) symmetrically distributed slidably connected to the outer wall of the guide plate (27), a double screw (26) threadedly connected to the inner wall of the guide block (28), and the double screw (26) rotatably connected to the fixing plate (25), a knob (30) fixedly connected to the outer wall of the double screw (26), a linkage plate (29) symmetrically distributed rotatably connected to the outer wall of the guide block (28), and a positioning frame (24) rotatably connected to the end of the linkage plate (29) away from the guide block (28).

2. The overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, The plug-in assembly includes a main connecting block (4) and a secondary connecting block (3) symmetrically fixedly connected to the outer walls of housing A (1) and housing B (2). A ratchet plate (5) is fixedly connected to the outer wall of the secondary connecting block (3), and the ratchet plate (5) is slidably connected to the main connecting block (4). A locking block (6) is slidably connected to the inner wall of the main connecting block (4), and the outer wall of the locking block (6) abuts against the outer wall of the ratchet plate (5). A symmetrically distributed pulling block (34) is slidably connected to the inner wall of the locking block (6). A connecting rod (8) is fixedly connected to the outer wall of the pulling block (34). A pull rod (7) is fixedly connected to the end of the connecting rod (8) away from the pulling block (34). A limiting plate (36) is slidably connected to the outer wall of the connecting rod (8), and the limiting plate (36) is fixedly connected to the main connecting block (4).

3. The overload protection device for a low-voltage distribution line transformer according to claim 2, characterized in that, The outer wall of the connecting rod (8) is fitted with a strong spring (9). One end of the strong spring (9) is fixedly connected to the limiting plate (36), and the other end of the strong spring (9) away from the limiting plate (36) is fixedly connected to the locking block (6).

4. The overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, The outer wall of the positioning frame (24) is slidably connected with symmetrically distributed guide rods (23), and the guide rods (23) are fixedly connected to the box A (1) and the box B (2).

5. An overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, The outer walls of the condenser tube (17) and the heating tube (16) are both fixedly connected to the insulating plate (18), and the box body A (1) and the box body B (2) are both fixedly connected to the insulating plate (18).

6. An overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, A transformer body (31) is arranged between the symmetrical positioning frames (24).

7. An overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, Water flow channels (35) are provided between the heating tube (16) and the box body B (2) and between the condenser tube (17) and the box body A (1), and the water flow channels (35) are connected to the water outlet tank (19).

8. An overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, Temperature sensor A (32) is fixedly connected to the inner wall of box A (1), and temperature sensor B (33) is fixedly connected to the inner wall of box B (2).

9. An overload protection device for a low-voltage distribution line transformer according to claim 1, characterized in that, Both the inner walls of the box A (1) and the box B (2) are provided with evenly distributed ventilation openings (20).

Images