Self-adaptive temperature regulation and control device for dry-type transformer

Abstract

The utility model discloses a dry-type transformer temperature self-adaption regulation and control device which comprises a temperature regulation and control mechanism, the temperature regulation and control mechanism is installed at the bottom of a dry-type transformer body, a temperature sensor and a controller are installed on the dry-type transformer body, a butt joint seat is arranged on the temperature regulation and control mechanism, and the butt joint seat is connected with the controller. The butt joint seat is arranged below the dry-type transformer body, a dismounting seat is installed at the bottom of the butt joint seat, supporting seats are fixedly arranged on the two sides of the bottom of the dismounting seat, a mounting plate is fixedly welded to the ends of the supporting seats, and two sets of groove holes are formed in the mounting plate. According to the temperature self-adaptive regulation and control device for the dry-type transformer, starting and stopping of the draught fan are generally automatically controlled by the temperature monitoring device according to a set temperature threshold value; the running speed of the cooling fan can be adaptively adjusted according to the temperature of the transformer; and the influence on the performance and the service life of the dry-type transformer body and even possible internal faults are avoided.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformers, specifically a dry-type transformer temperature adaptive control device. Background Technology

[0002] The core of the dry-type power transformer is made of high-permeability, high-quality grain-oriented cold-rolled silicon steel sheets with a 45° fully oblique step joint. The core adopts a special square tube pull plate structure, the core column is bound with insulating tape, and the core surface is coated with special resin to prevent moisture and rust, effectively reducing no-load loss, no-load current and core noise.

[0003] Most of the cooling devices for dry-type power transformers on the market have some basic cooling functions. When in use, they can only cool the internal transformer and cannot create conditions for efficient cooling. Their working method has certain limitations. At the same time, when the internal cooling device fails, traditional cooling devices cannot be disassembled for repair. They lack the convenience of installation and disassembly, making them inconvenient for users to use on a large scale and causing inconvenience in application.

[0004] To address the aforementioned issues, a search revealed Chinese Patent CN216015011U, which discloses a high-efficiency heat dissipation device for dry-type power transformers. The device includes a main body, a transformer, and supporting clamps. Heat dissipation devices are fixedly connected to both sides of the main body in a symmetrical arrangement. A supporting plate is fixedly connected to the upper end of each heat dissipation device, also in a symmetrical arrangement. Fixing screws are fixedly connected inside the supporting plate, evenly distributed, and inserted into the plate to connect with the main body.

[0005] Although the aforementioned device can dissipate internal heat through multiple heat dissipation vents on the upper part of the device body, in actual use, the temperature is too high and cannot be adaptively controlled. Because the fan load cannot be adjusted according to the temperature, the fan load remains unchanged when the transformer is at high temperature, and the transformer cannot be adequately cooled. If it is in this state for a long time, the windings and core of the transformer will be subjected to excessive thermal stress, which will further affect its performance and lifespan, and may even cause internal failures. Utility Model Content

[0006] The purpose of this invention is to provide a dry-type transformer temperature adaptive control device to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, a temperature adaptive control device for a dry-type transformer is provided, comprising a temperature control mechanism installed at the bottom of the dry-type transformer body. A temperature sensor and a controller are installed on the dry-type transformer body. A docking seat is provided on the temperature control mechanism, located below the dry-type transformer body. A disassembly / assembly seat is installed at the bottom of the docking seat. Support seats are fixed on both sides of the bottom of the disassembly / assembly seat. A mounting plate is welded to the end of the support seat, and two sets of slots are provided on the mounting plate. A fan and its linear drive mechanism are provided on the inner side of the support seat. A fan is mounted on the fan and its linear drive mechanism. A guide plate is fixedly installed on the side wall of the fan, and a drive seat is fixedly installed on the outer side of the guide plate.

[0008] Preferably, the temperature control mechanism includes a docking seat, a docking groove, a docking plate, a disassembly seat, a support seat, a mounting plate, and a fan and its linear drive mechanism. The docking seats are configured as two sets, which are respectively fixedly installed on both sides of the bottom of the dry-type transformer body. The temperature control mechanism is positioned and installed at the bottom of the dry-type transformer body through the docking seat and the disassembly seat. The temperature control mechanism at the bottom of the dry-type transformer body is a detachable structure.

[0009] Preferably, both sets of docking seats have docking grooves at their bottoms, and the disassembly and assembly seats are configured in two sets. The surfaces of both sets of disassembly and assembly seats are fixedly provided with docking plates, and the dimensions of the docking plates and docking grooves are compatible.

[0010] Preferably, the two sets of mating plates are inserted into the two sets of mating slots respectively. The cross-sections of the mating plates and the mating slots are both right-angled trapezoids. The mating plates are inserted into the mating seats and fixedly connected by three sets of fixing bolts.

[0011] Preferably, the fan and its linear drive mechanism include a guide plate, a reciprocating screw, a drive seat, a guide plate, a fixed plate, a synchronous pulley A, a synchronous pulley B, a synchronous belt, a fan, and a servo motor; the mounting and disassembly seats are configured in two sets, and fixed plates are fixedly installed on both sides of the bottom of the two sets of mounting and disassembly seats. The servo motor is screwed and fixed to the outside of the fixed plate, and the output shaft of the servo motor is fixedly installed with a reciprocating screw, which is screwed into the inside of the drive seat.

[0012] Preferably, a guide plate is installed on one side of the reciprocating screw, the end of the guide plate is fixedly connected to the inner wall of the fixed plate, the guide plate is inserted into the guide hole opened inside the guide plate, and synchronous pulley A and synchronous pulley B are respectively installed at the ends of the two sets of reciprocating screws.

[0013] Preferably, a timing belt is installed between the timing pulleys A and B, and the two sets of reciprocating screws are synchronously driven by the timing pulleys A, B and the timing belt. The timing pulleys A and B are of the same size.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model adopts a modular installation method between the dry-type transformer body and the temperature control mechanism, which facilitates separation. When the temperature control mechanism malfunctions, it can be directly removed from the bottom of the dry-type transformer body through the docking slot and disassembly base, without the need for large-scale disassembly of the entire transformer, greatly shortening maintenance and repair time and improving work efficiency. If a component in the temperature control mechanism is damaged, the entire mechanism can be removed and the component replaced individually without affecting other parts of the dry-type transformer body.

[0016] 2. This utility model utilizes a fan and its linear drive mechanism to perform lateral reciprocating motion at the bottom of the dry-type transformer body along a guide plate. The airflow moves from bottom to top, and the lateral reciprocating motion of the fan ensures that the airflow evenly covers the bottom of the dry-type transformer body, avoiding uneven local heat dissipation; it can better form convection with the hot air generated inside the transformer; it reduces dust accumulation at the bottom of the transformer; compared with the stable airflow generated by a fixed fan, it reduces the impact of dust on the heat dissipation performance of the transformer, and also reduces problems such as decreased insulation performance caused by dust accumulation.

[0017] 3. In this invention, the start and stop of the fan are usually automatically controlled by a temperature monitoring device based on a set temperature threshold; the operating speed of the cooling fan can be adaptively adjusted according to the temperature of the transformer; when the transformer temperature rises, the temperature monitoring device will control the fan to increase its speed and increase the airflow to enhance heat dissipation capacity; this can avoid affecting the performance and lifespan of the dry-type transformer body, and may even cause internal failures. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the temperature control mechanism of this utility model.

[0020] Figure 3 for Figure 2 Rear view;

[0021] Figure 4 for Figure 2 Top view;

[0022] Figure 5 for Figure 2 Side view.

[0023] The following are the labeling elements in the diagram: 1. Dry-type transformer body; 2. Temperature control mechanism; 20. Connecting seat; 21. Connecting groove; 22. Connecting plate; 23. Disassembly / assembly seat; 24. Support seat; 25. Mounting plate; 26. Fan and its linear drive mechanism; 261. Guide plate; 262. Reciprocating screw; 263. Drive seat; 264. Guide plate; 265. Fixing plate; 266. Synchronous pulley A; 267. Synchronous pulley B; 268. Synchronous belt; 269. Fan; 2691. Servo motor. Detailed Implementation

[0024] Please see Figure 1-5 This utility model provides a temperature adaptive control device for a dry-type transformer, including a temperature control mechanism 2, which is installed at the bottom of the dry-type transformer body 1. A temperature sensor and a controller are installed on the dry-type transformer body 1. A docking seat 20 is provided on the temperature control mechanism 2, which is located below the dry-type transformer body 1. A disassembly seat 23 is installed at the bottom of the docking seat 20. Support seats 24 are fixed on both sides of the bottom of the disassembly seat 23. An installation plate 25 is welded and fixed to the end of the support seat 24. Two sets of slots are opened on the installation plate 25. A fan and its linear drive mechanism 26 are provided on the inner side of the support seat 24. A fan 269 is installed on the fan and its linear drive mechanism 26. A guide plate 264 is fixedly installed on the side wall of the fan 269. A drive seat 263 is fixedly provided on the outer side of the guide plate 264.

[0025] Working Principle: A temperature control mechanism 2 is installed at the bottom of the dry-type transformer body 1. The temperature control mechanism 2 is positioned and installed at the bottom of the dry-type transformer body 1 via a docking slot 21 and a disassembly / removal seat 23. The dry-type transformer body 1 and the temperature control mechanism 2 are installed in a modular manner, facilitating separation. When the temperature control mechanism 2 malfunctions, it can be directly removed from the bottom of the dry-type transformer body 1 via the docking slot 21 and disassembly / removal seat 23, eliminating the need for large-scale disassembly of the entire transformer, significantly shortening maintenance and repair time and improving work efficiency. For maintenance of the dry-type transformer body 1, the temperature control mechanism 2 can be separated, making it easier to inspect, clean, and maintain the bottom of the body and related parts, helping to promptly identify potential problems and ensuring the normal operation of the transformer. If a component of the temperature control mechanism 2 is damaged, the entire mechanism can be removed and the component replaced individually without affecting other parts of the dry-type transformer body 1. Furthermore, because... The modular design allows the replaced temperature control mechanism 2 to be quickly and accurately reinstalled in its original position, ensuring good fit with the main body. If a more advanced temperature control mechanism 2 becomes available, the old mechanism can be easily replaced, upgrading the equipment and improving the transformer's performance and temperature control. Modular installation makes the connection between the dry-type transformer body 1 and the temperature control mechanism 2 more stable and accurate. Positioning installation via the docking slot 21 and the mounting / removing seat 23 ensures the relative positional accuracy between the two, preventing performance degradation or malfunctions due to installation errors. The dry-type transformer body 1 and the temperature control mechanism 2 can be transported separately, reducing the overall transport volume and weight, and lowering transport difficulty and cost. It also reduces the possibility of damage caused by collisions between components during transport. For storage, separate storage facilitates the classification and management of different components, saving storage space and allowing for the protection and maintenance of individual components, extending their service life.

[0026] A fan and its linear drive mechanism 26 are installed on the temperature control mechanism 2. The fan 269 in the fan and its linear drive mechanism 26 moves laterally back and forth at the bottom of the dry-type transformer body 1 along the guide plate 261. The airflow moves from bottom to top. The lateral back and forth movement of the fan 269 can evenly cover the bottom of the dry-type transformer body 1, avoiding uneven local heat dissipation. Compared with a fan 269 in a fixed position, this movement mode can effectively cool all parts of the transformer bottom, preventing local overheating from affecting the transformer's performance and lifespan. The airflow from bottom to top is compatible with hot air. The natural upward movement of the airflow allows for better convection with the hot air generated inside the transformer. The hot air rises naturally, while the cool air at the bottom is continuously replenished by the fan 269, creating a good convection cycle that effectively removes the heat generated by the transformer and improves heat dissipation efficiency. The lateral reciprocating motion of the fan 269 can generate a more complex airflow, reducing dust accumulation at the bottom of the transformer. Compared with the stable airflow generated by the fixed fan 269, this dynamic airflow can more effectively blow away dust, reducing the impact of dust on the transformer's heat dissipation performance and also reducing problems such as decreased insulation performance caused by dust accumulation.

[0027] The lateral reciprocating motion of the fan 269 is as follows: when the external switch of the servo motor 2691 is turned on, the output shaft of the servo motor 2691 drives the reciprocating screw 262 to rotate. When the reciprocating screw 262 rotates, it drives the synchronous wheel B267 to rotate through the synchronous wheel A266 and the synchronous belt 268 at its end, so that the two sets of reciprocating screws 262 rotate synchronously in the same direction. Under the drive of the drive seat 263, the fan 269 is driven to perform lateral reciprocating motion. The fan inside the fan 269 works to accelerate the airflow at the bottom of the dry-type transformer body 1, thereby completing the efficient heat dissipation work at the bottom of the dry-type transformer body 1.

[0028] The dry-type transformer body 1 is equipped with temperature sensors, including but not limited to thermocouples and resistance temperature detectors (RTDs), which are installed in key parts such as the transformer windings or core for real-time temperature measurement. The sensors convert temperature signals into electrical signals and transmit them to the controller. For some dry-type transformers with low loads and low heat generation, natural air cooling can be used. When the temperature sensor detects that the transformer temperature has risen to a certain level, the fan 269 installed at the bottom of the transformer is activated to accelerate airflow and remove heat. The start and stop of the fan are usually automatically controlled by the temperature monitoring device according to the set temperature threshold. When the winding temperature reaches 80°C, the fan starts automatically; when the temperature drops to 60°C, the fan stops running. Forced air circulation is achieved by cooling fans installed inside or outside the transformer to improve heat dissipation. The operating speed of the cooling fans can be adaptively adjusted according to the transformer temperature. When the transformer temperature rises, the temperature monitoring device controls the fan to increase its speed and airflow to enhance heat dissipation. This can prevent situations that could affect the performance and lifespan of the dry-type transformer body 1 or even cause internal failures.

[0029] In a preferred embodiment, the temperature control mechanism 2 includes a docking seat 20, a docking groove 21, a docking plate 22, a disassembly seat 23, a support seat 24, a mounting plate 25, and a fan and its linear drive mechanism 26. The docking seats 20 are configured as two sets, which are respectively fixedly installed on both sides of the bottom of the dry-type transformer body 1. The temperature control mechanism 2 is positioned and installed at the bottom of the dry-type transformer body 1 through the docking seats 20 and the disassembly seat 23. The temperature control mechanism 2 at the bottom of the dry-type transformer body 1 is a detachable structure.

[0030] In a preferred embodiment, both sets of docking seats 20 have docking grooves 21 at their bottoms, and the disassembly and assembly seats 23 are configured in two sets. The surfaces of both sets of disassembly and assembly seats 23 are fixedly provided with docking plates 22, and the dimensions of the docking plates 22 and the docking grooves 21 are compatible.

[0031] In a preferred embodiment, two sets of mating plates 22 are respectively inserted into the interior of two sets of mating grooves 21. The cross-sections of the mating plates 22 and the mating grooves 21 are both set as right-angled trapezoids. The mating plates 22 are inserted into the interior of the mating seat 20 and are fixedly connected by three sets of fixing bolts.

[0032] In a preferred embodiment, the fan and its linear drive mechanism 26 include a guide plate 261, a reciprocating screw 262, a drive base 263, a guide plate 264, a fixing plate 265, a synchronous pulley A 266, a synchronous pulley B 267, a synchronous belt 268, a fan 269, and a servo motor 2691. The mounting base 23 is configured in two sets, and fixing plates 265 are fixedly installed on both sides of the bottom of the two sets of mounting base 23. The servo motor 2691 is screwed to the outside of the fixing plate 265, and the output shaft of the servo motor 2691 is fixedly installed with the reciprocating screw 262, which is screwed into the inside of the drive base 263.

[0033] In a preferred embodiment, a guide plate 261 is installed on one side of the reciprocating screw 262. The end of the guide plate 261 is fixedly connected to the inner wall of the fixed plate 265. The guide plate 261 is inserted into the guide hole opened inside the guide plate 264. Synchronous pulleys A266 and B267 are respectively installed at the ends of the two sets of reciprocating screws 262.

[0034] In a preferred embodiment, a timing belt 268 is installed between timing pulleys A266 and B267. The two sets of reciprocating screws 262 are synchronously driven by timing pulleys A266, B267 and timing belt 268. The timing pulleys A266 and B267 are of the same size.

Claims

1. A dry-type transformer temperature adaptive control device, comprising a temperature control mechanism (2), characterized in that: The temperature control mechanism (2) is installed at the bottom of the dry-type transformer body (1). A temperature sensor and a controller are installed on the dry-type transformer body (1). A docking seat (20) is provided on the temperature control mechanism (2). The docking seat (20) is located below the dry-type transformer body (1). A disassembly seat (23) is installed at the bottom of the docking seat (20). Support seats (24) are fixed on both sides of the bottom of the disassembly seat (23). An installation plate (25) is welded and fixed at the end of the support seat (24). Two sets of slots are opened on the installation plate (25). A fan and its linear drive mechanism (26) are provided on the inner side of the support seat (24). A fan (269) is installed on the fan and its linear drive mechanism (26). A guide plate (264) is fixedly installed on the side wall of the fan (269). A drive seat (263) is fixedly provided on the outer side of the guide plate (264).

2. The adaptive temperature control device for a dry-type transformer according to claim 1, characterized in that: The temperature control mechanism (2) includes a docking seat (20), a docking groove (21), a docking plate (22), a disassembly and assembly seat (23), a support seat (24), an installation plate (25), and a fan and its linear drive mechanism (26). The docking seat (20) is configured as two sets, which are respectively fixedly installed on both sides of the bottom of the dry-type transformer body (1). The temperature control mechanism (2) is positioned and installed at the bottom of the dry-type transformer body (1) through the docking seat (20) and the disassembly and assembly seat (23). The temperature control mechanism (2) at the bottom of the dry-type transformer body (1) is a detachable structure.

3. The adaptive temperature control device for a dry-type transformer according to claim 2, characterized in that: The bottom of both sets of docking seats (20) is provided with docking grooves (21). The disassembly and assembly seats (23) are set in two sets. The surfaces of both sets of disassembly and assembly seats (23) are fixedly provided with docking plates (22). The dimensions of the docking plates (22) and the docking grooves (21) are compatible.

4. The dry-type transformer temperature adaptive control device according to claim 3, characterized in that: Two sets of docking plates (22) are inserted into the two sets of docking slots (21) respectively. The cross-sections of the docking plates (22) and the docking slots (21) are both right-angled trapezoids. The docking plates (22) are inserted into the docking seats (20) and fixedly connected by three sets of fixing bolts.

5. The adaptive temperature control device for a dry-type transformer according to claim 2, characterized in that: The fan and its linear drive mechanism (26) include a guide plate (261), a reciprocating screw (262), a drive seat (263), a guide plate (264), a fixing plate (265), a synchronous pulley A (266), a synchronous pulley B (267), a synchronous belt (268), a fan (269), and a servo motor (2691). The mounting and disassembly base (23) is set in two sets. Fixing plates (265) are fixedly installed on both sides of the bottom of the two sets of mounting and disassembly bases (23). The servo motor (2691) is screwed and fixed on the outside of the fixing plate (265). The output shaft of the servo motor (2691) is fixedly installed with a reciprocating screw (262), which is screwed inside the drive seat (263).

6. The dry-type transformer temperature adaptive control device according to claim 5, characterized in that: A guide plate (261) is installed on one side of the reciprocating screw (262). The end of the guide plate (261) is fixedly connected to the inner wall of the fixed plate (265). The guide plate (261) is inserted into the guide hole opened inside the guide plate (264). Synchronous pulley A (266) and synchronous pulley B (267) are respectively installed at the ends of the two sets of reciprocating screws (262).

7. The dry-type transformer temperature adaptive control device according to claim 6, characterized in that: A timing belt (268) is installed between the timing pulleys A (266) and B (267). The two sets of reciprocating screws (262) are synchronously driven by the timing pulleys A (266), B (267) and the timing belt (268). The timing pulleys A (266) and B (267) are the same size.

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