Efficient transformer heat dissipation device

Abstract

The invention discloses an efficient transformer heat dissipation device, relates to the technical field of transformer heat dissipation, and provides the following scheme that the efficient transformer heat dissipation device comprises a transformer body and further comprises air cooling mechanisms arranged on the two sides of the transformer body and used for conducting rapid air cooling on the transformer body; the liquid cooling mechanism is arranged on one side of the top of the transformer body and used for conducting liquid cooling on the transformer body, and one side of the liquid cooling mechanism is overlapped with the air cooling mechanism; and the liquid return cooling mechanism is arranged on one side of the transformer body. According to the invention, the air cooling mechanism and the liquid cooling mechanism are superposed and cooperated, so that the heat dissipation requirement of the high-capacity transformer can be quickly met, the liquid return cooling mechanism realizes closed-loop circulation of cooling liquid, frequent liquid supplement is avoided, the operation and maintenance cost is reduced, waste liquid discharge is reduced, and the environment-friendly requirement is met; the running state of equipment can be dynamically adjusted according to the real-time temperature of the transformer, the heat dissipation effect is guaranteed, energy consumption is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer heat dissipation, and in particular to a high-efficiency transformer heat dissipation device. Background Art

[0002] In modern power systems, transformers, as one of the core equipment, are widely used in transmission and distribution links of various voltage levels. With the continuous growth of electricity demand and the development of power systems towards high voltage and large capacity, the heat generated by transformers during operation is also increasing. If the heat cannot be dissipated in a timely and effective manner, the temperature inside the transformer will continue to rise, which will not only lead to a decline in the insulation performance of the transformer and shorten its service life, but may also cause safety accidents and pose a serious threat to the stable operation of the power system. Traditional transformer heat dissipation methods mainly include natural air cooling, forced air cooling and oil-immersed self-cooling. With the further improvement of the voltage level of the main transformer for transmission and transformation and the continuous increase in capacity, how to improve the heat dissipation efficiency of the transformer heat dissipation device without significantly increasing the cost and space occupancy has become one of the key technical issues that need to be urgently solved in the current power industry. To this end, we propose a high-efficiency transformer heat dissipation device. Summary of the Invention

[0003] The present invention provides a high-efficiency transformer heat dissipation device, which solves the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A high-efficiency transformer heat dissipation device includes a transformer body and further includes: The air cooling mechanism is located on both sides of the transformer body and is used to quickly cool the transformer body; A liquid cooling mechanism is located on one side of the top of the transformer body and is used to cool the transformer body by liquid cooling. One side of the liquid cooling mechanism overlaps with the air cooling mechanism. The liquid return cooling mechanism is located on one side of the transformer body and is used to cool the cooling liquid after it has been cooled for reuse.

[0005] Furthermore, the air cooling mechanism includes a fan box fixedly connected to both sides of the transformer body, the two fan boxes are respectively fixedly connected to the inside of the drive motor, the output shaft of the drive motor is fixedly connected to the drive rod, and two fan blades are respectively fixedly connected to the drive rod, and the two fan blades are respectively movably mounted inside the fan box, and the two sides of the fan box are respectively fixedly connected with an air inlet and an air outlet corresponding to the two fan blades.

[0006] Furthermore, the liquid cooling mechanism includes a support frame fixedly connected to one side of the transformer body, a liquid storage tank is fixedly connected to the support frame, a main water outlet pipe is fixedly connected to one side of the bottom of the liquid storage tank, one end of the main water outlet pipe is fixedly connected to multiple first branch water pipes, and the multiple first branch water pipes are respectively fixedly connected to a connecting tower.

[0007] Furthermore, the liquid cooling mechanism also includes heat dissipation fins fixedly connected to the inside of the fan box, and multiple second water distribution pipes and water outlet pipes are fixedly connected to both sides of the transformer body, one end of the second water distribution pipe is respectively connected to multiple first water distribution pipes, and a water inlet pipe is fixedly connected above the heat dissipation fins, and the second water distribution pipes are respectively connected to the water inlet pipes.

[0008] Furthermore, a drain pipe is fixedly connected to the bottom of the heat dissipation fin, and the drain pipe is connected to the water outlet pipe. A cavity is opened inside the heat dissipation fin, and the water inlet pipe and the drain pipe are both connected to the inside of the cavity.

[0009] Furthermore, the liquid return cooling mechanism includes a cooling box fixedly connected to one side of the transformer body, a first return water pipe fixedly connected to the top of the cooling box, a water pump fixedly connected to the top of the transformer body, a water inlet end of the water pump connected to the first return water pipe, a cooling control board fixedly connected to one side of the top of the transformer body, one end of the cooling control board fixedly connected to the second return water pipe, and the other end of the second return water pipe connected to the liquid storage tank.

[0010] Furthermore, a temperature sensor is fixedly connected to the inner top of the fan box, and one end of the temperature sensor is in contact with one side of the heat dissipation fin.

[0011] Furthermore, a control box is fixedly connected to one side of the transformer body, and the control box is electrically connected to the temperature sensor, the drive motor and the water pump respectively.

[0012] Furthermore, an external high-voltage connection terminal is fixedly connected to the other side of the transformer body, and a mounting frame is fixedly connected to the bottom of the transformer body.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: The present invention installs an air cooling mechanism, a liquid cooling mechanism and a liquid return cooling mechanism to perform air cooling and liquid cooling on the transformer body, and simultaneously cools the recycled coolant. The direct cooling by air cooling is combined with the efficient heat absorption of liquid cooling through the heat dissipation fins, effectively ensuring the improvement of heat dissipation efficiency compared with a single method. In summary, this equipment can not only quickly respond to the heat dissipation needs of high-capacity transformers through the superposition and coordination of air cooling and liquid cooling mechanisms, but also realize the closed-loop circulation of cooling liquid through the liquid return cooling mechanism, avoiding frequent liquid replenishment, reducing operation and maintenance costs, and reducing waste liquid emissions, meeting green environmental protection requirements. The temperature sensor is linked with the control box to dynamically adjust the equipment operation status according to the real-time temperature of the transformer, reducing energy consumption while ensuring the heat dissipation effect, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall first top view of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 2 This is a schematic diagram of the overall bottom-up three-dimensional structure of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 3 This is a schematic diagram of the overall second top perspective structure of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 4 This is a schematic diagram of a partial cross-section of a fan box of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 5 This is a top-down perspective structural diagram of the liquid cooling mechanism, air cooling mechanism, and liquid return cooling mechanism of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 6 This is a top-down perspective structural diagram of a liquid cooling mechanism of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 7 This is a top-down perspective structural diagram of the liquid cooling mechanism and liquid return cooling mechanism of a high-efficiency transformer heat dissipation device proposed by the present invention; Figure 8 This is a top-down perspective structural diagram of a water pump and a cooling control panel of a high-efficiency transformer heat dissipation device proposed by the present invention.

[0015] In the figure: 1. Transformer body; 2. Air cooling mechanism; 201. Fan box; 202. Drive motor; 203. Drive rod; 204. Fan blade; 3. Liquid cooling mechanism; 301. Support frame; 302. Liquid storage tank; 303. Main water outlet pipe; 304. First water distribution pipe; 305. Connecting tower; 306. Second water distribution pipe; 307. Heat dissipation fins; 308. Water outlet pipe; 309. Water inlet pipe; 310. Drain pipe; 4. Liquid return cooling mechanism; 401. Cooling box; 402. First return water pipe; 403. Water pump; 404. Cooling control board; 405. Second return water pipe; 5. Control box; 6. High-voltage connection terminal; 7. Temperature sensor. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0018] Example, see Figure 1-8 : A high-efficiency transformer heat dissipation device, comprising a transformer body 1, an air cooling mechanism 2, a liquid cooling mechanism 3 and a liquid return cooling mechanism 4; One side of the liquid cooling mechanism 3 overlaps with the air cooling mechanism 2; The air cooling mechanism 2 includes a fan box 201 fixedly connected to both sides of the transformer body 1, and the interiors of the two fan boxes 201 are respectively fixedly connected to drive motors 202, and the output shaft of the drive motor 202 is fixedly connected to a drive rod 203. Two fan blades 204 are respectively fixedly connected to the drive rod 203, and the two fan blades 204 are movably sleeved inside the fan box 201. An air inlet and an air outlet are fixedly connected at the two sides of the fan box 201 corresponding to the two fan blades 204. It is worth mentioning that a dust filter (aperture ≤ 0.5mm) is provided at the air inlet, and a guide plate is provided at the air outlet to reduce air flow turbulence. Sound insulation cotton (thickness ≥ 5mm) is laid on the inner wall of the fan box 201 to reduce the operating noise to below 60dB. The drive motor 202 adopts a variable frequency motor, and the speed (500-2000r / min) can be adjusted by the control box 5; The liquid cooling mechanism 3 includes a support frame 301 fixedly connected to one side of the transformer body 1, a liquid storage tank 302 fixedly connected to the support frame 301, a main water outlet pipe 303 fixedly connected to the bottom side of the liquid storage tank 302, one end of the main water outlet pipe 303 fixedly connected to a plurality of first water branch pipes 304, and each of the plurality of first water branch pipes 304 fixedly connected to a connecting tower 305. It is worth mentioning that the liquid storage tank 302 has a capacity of 50 to 200L and is internally provided with a liquid level sensor that is linked to the control box 5 and automatically alarms when the liquid level is low. The coolant uses a high thermal conductivity synthetic liquid (thermal conductivity ≥ 0.6W / (m・K)), suitable for operating conditions from -40℃ to 120℃; The liquid return cooling mechanism 4 includes a cooling box 401 fixedly connected to one side of the transformer body 1, a first return water pipe 402 fixedly connected to the top of the cooling box 401, a water pump 403 fixedly connected to the top of the transformer body 1, a water inlet end of the water pump 403 is connected to the first return water pipe 402, a cooling control board 404 fixedly connected to the top side of the transformer body 1, one end of the cooling control board 404 is fixedly connected to the second return water pipe 405, the other end of the second return water pipe 405 is connected to the liquid storage tank 302, and the liquid return cooling mechanism 4 includes a cooling box 401 fixedly connected to one side of the transformer body 1, a first return water pipe 402 fixedly connected to the top of the cooling box 401, a first return water pipe 402 fixedly connected to the top of the cooling box 401, a first return water pipe 405 ... 03 The return coolant in the cooling box 401 is sucked back into the liquid storage tank 302 for subsequent recycling. It is worth mentioning that: the cooling box 401 is equipped with a serpentine heat dissipation pipe inside and an auxiliary cooling fan outside to reduce the return coolant temperature from 60-80°C to 30-40°C (when the ambient temperature is 25°C). The water pump 403 uses a variable frequency water pump with adjustable flow (5-20L / min), which is linked with the cooling control board 404 to achieve precise flow control. At the same time, the second return water pipe 405 is equipped with a one-way valve to prevent the coolant from flowing back.

[0019] In the present invention, the liquid cooling mechanism 3 also includes a heat sink fin 307 fixedly connected to the inside of the fan box 201. A plurality of second water distribution pipes 306 and a water outlet pipe 308 are fixedly connected to both sides of the transformer body 1. One end of the second water distribution pipe 306 is respectively connected to the plurality of first water distribution pipes 304. A water inlet pipe 309 is fixedly connected above the heat sink fin 307. The second water distribution pipe 306 is respectively connected to the water inlet pipe 309. The coolant is injected into the heat sink fin 307 through the water inlet pipe 309 to improve the cooling effect of the heat sink fin 307. It is worth mentioning that the heat sink fin 307 is made of copper and the fin spacing is 8 to 12 mm. The first water distribution pipe 304 and the second water distribution pipe 306 are connected by a quick-insert sealing joint (pressure resistance ≥ 1.6 MPa) to reduce the risk of leakage.

[0020] In the present invention, a drain pipe 310 is fixedly connected to the bottom of the heat dissipation fin 307, and the drain pipe 310 is connected to the water outlet pipe 308. A cavity is opened inside the heat dissipation fin 307, and the internal cavity is provided with spiral guide ribs to improve the turbulence effect of the liquid and enhance the heat absorption efficiency. The water inlet pipe 309 and the drain pipe 310 are both connected to the inside of the cavity, and conventional heat dissipation treatment is performed through the heat dissipation fin 307.

[0021] In the present invention, a temperature sensor 7 is fixedly connected to the top of the fan box 201, one end of the temperature sensor 7 is in contact with one side of the heat sink 307, and the heat sink 307 is temperature-controlled in real time by the temperature sensor 7. A control box 5 is fixedly connected to one side of the transformer body 1, and the control box 5 is electrically connected to the temperature sensor 7, the drive motor 202, and the water pump 403 respectively. The other side of the transformer body 1 is fixedly connected to the external high-voltage connection terminal 6, and the bottom of the transformer body 1 is fixedly connected to the mounting bracket. It is worth mentioning that the temperature sensor 7 adopts a platinum resistance sensor (accuracy ±0.5°C), and the monitoring points are extended to the iron core, winding and coolant outlet of the transformer body 1 (a total of 3 to 5 monitoring points); The control box 5 has a built-in PLC controller with three preset temperature thresholds (such as 60°C, 80°C and 100°C): Below 60℃: only low speed air cooling (500-800r / min) is enabled; 60-80℃: The air cooling speed is increased to 1200-1500r / min, and the liquid cooling system operates at a low flow rate (5-10L / min); Above 80℃: Air cooling at full load (2000r / min), liquid cooling at full flow (20L / min), and remote alarm triggered.

[0022] Working principle: When in use, the transformer body 1 generates heat during operation. The temperature sensor 7 in the fan box 201 monitors the temperature of the heat dissipation fins 307 in real time (indirectly reflecting the temperature of the transformer body 1) and transmits the data to the control box 5. When the temperature exceeds a preset threshold, the control box 5 automatically starts the drive motor 202 and the water pump 403, triggering the heat dissipation process. When the drive motor 202 is running, it drives the drive rod 203 to rotate, so that the two fan blades 204 rotate at high speed in the fan box 201. External cold air enters the fan box 201 from the air inlet. Part of it directly cools the two sides of the transformer body 1, and the other part flows through the surface of the heat dissipation fins 307 to accelerate the heat dissipation of the coolant in the fins. Finally, the hot air is discharged from the air outlet, forming a continuous air cooling cycle. The cooling liquid (e.g., a dedicated coolant) in the liquid storage tank 302 is distributed through the main outlet pipe 303 to multiple first water distribution pipes 304. After the flow rate is stabilized by the connecting tower 305, it is transported to the water inlet pipe 309 by the second water distribution pipe 306 and finally flows into the internal cavity of the heat sink fins 307. As the coolant flows in the cavity, it absorbs heat transferred from the transformer body 1 to the heat sink fins 307. After the temperature rises, it is discharged from the drain pipe 310 through the outlet pipe 308, completing the liquid cooling heat absorption process. After absorbing heat, the high-temperature coolant flows into the cooling box 401 through the outlet pipe 308. The cooling box 401 initially cools the liquid through the built-in heat dissipation structure (such as auxiliary heat sinks). The water pump 403 pumps the cooled liquid in the cooling box 401 through the first return pipe 402 to the cooling control board 404. After the cooling control board 404 further adjusts the liquid temperature to a preset value, the liquid is returned to the liquid storage tank 302 through the second return pipe 405, thereby realizing the recycling of the cooled liquid and reducing resource consumption. The control box 5 dynamically adjusts the speed of the drive motor 202 to control the wind speed of the fan blades 204 and the power of the water pump 403 to control the coolant flow rate based on the real-time data of the temperature sensor 7. When the temperature is lower than the threshold, the equipment operating power is automatically reduced or shut down to achieve energy saving and precise heat dissipation.

[0023] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-efficiency transformer heat dissipation device, comprising a transformer body (1), characterized in that: Also includes: An air cooling mechanism (2) is provided on both sides of the transformer body (1) and is used to quickly cool the transformer body (1); A liquid cooling mechanism (3) is located on one side of the top of the transformer body (1) and is used to perform liquid cooling on the transformer body (1), with one side of the liquid cooling mechanism (3) overlapping with the air cooling mechanism (2); The liquid return cooling mechanism (4) is located on one side of the transformer body (1) and is used to cool the cooling liquid after the temperature is reduced for reuse.

2. The high-efficiency transformer heat dissipation device according to claim 1, characterized in that: The air cooling mechanism (2) comprises a fan box (201) fixedly connected to both sides of the transformer body (1), the interiors of the two fan boxes (201) are respectively fixedly connected with a driving motor (202), the output shaft of the driving motor (202) is fixedly connected with a driving rod (203), the driving rod (203) is respectively fixedly connected with two fan blades (204), the two fan blades (204) are respectively movably sleeved inside the fan box (201), and the two sides of the fan box (201) are respectively fixedly connected with an air inlet and an air outlet at the two fan blades (204).

3. The high-efficiency transformer heat dissipation device according to claim 2, characterized in that: The liquid cooling mechanism (3) comprises a support frame (301) fixedly connected to one side of the transformer body (1); a liquid storage tank (302) is fixedly connected to the support frame (301); a main water outlet pipe (303) is fixedly connected to one side of the bottom of the liquid storage tank (302); one end of the main water outlet pipe (303) is fixedly connected to a plurality of first water distribution pipes (304); and a connection tower (305) is fixedly connected to each of the plurality of first water distribution pipes (304).

4. The high-efficiency transformer heat dissipation device according to claim 3, characterized in that: The liquid cooling mechanism (3) further comprises a heat dissipation fin (307) fixedly connected to the inside of the fan box (201); a plurality of second water distribution pipes (306) and a water outlet pipe (308) are fixedly connected to both sides of the transformer body (1); one end of each of the second water distribution pipes (306) is connected to each of the plurality of first water distribution pipes (304); a water inlet pipe (309) is fixedly connected above the heat dissipation fin (307); and the second water distribution pipes (306) are respectively connected to the water inlet pipe (309).

5. The high-efficiency transformer heat dissipation device according to claim 4, characterized in that: A drainage pipe (310) is fixedly connected below the heat dissipation fin (307), and the drainage pipe (310) is connected to the water outlet pipe (308). A cavity is provided inside the heat dissipation fin (307), and both the water inlet pipe (309) and the drainage pipe (310) are connected to the inside of the cavity.

6. The high-efficiency transformer heat dissipation device according to claim 3, characterized in that: The liquid return cooling mechanism (4) comprises a cooling box (401) fixedly connected to one side of the transformer body (1); a first water return pipe (402) is fixedly connected to the top of the cooling box (401); a water pump (403) is fixedly connected to the top of the transformer body (1); a water inlet end of the water pump (403) is connected to the first water return pipe (402); a cooling control board (404) is fixedly connected to one side of the top of the transformer body (1); one end of the cooling control board (404) is fixedly connected to a second water return pipe (405); and the other end of the second water return pipe (405) is connected to the liquid storage tank (302).

7. The high-efficiency transformer heat dissipation device according to claim 4, characterized in that: A temperature sensor (7) is fixedly connected to the inner top of the fan box (201), and one end of the temperature sensor (7) abuts against one side of the heat dissipation fin (307).

8. The high-efficiency transformer heat dissipation device according to claim 7, characterized in that: A control box (5) is fixedly connected to one side of the transformer body (1), and the control box (5) is electrically connected to the temperature sensor (7), the drive motor (202), and the water pump (403), respectively.

9. The high-efficiency transformer heat dissipation device according to claim 1, characterized in that: The other side of the transformer body (1) is fixedly connected to an external high-voltage connection terminal (6), and the bottom of the transformer body (1) is fixedly connected to a mounting frame.

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