Primary energy efficiency oil-immersed transformer
By designing the heat discharge mechanisms of fans, ring plates, telescopic springs, right-angle elbows, air ducts and nozzles in oil-immersed transformers, the problem of poor heat dissipation of oil-immersed transformers in narrow spaces is solved, and more efficient heat dissipation effect is achieved and equipment losses are reduced.
Patent Information
- Application Number
- CN202421877348.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-05
AI Technical Summary
When the oil-immersed transformer works in a narrow space, heat near the heat sink is prone to accumulate, affecting the thermal conductivity of the cooling circulating oil and increasing equipment losses.
A heat discharge mechanism including a fan, an ring plate, a telescopic spring, a right-angle elbow, a air duct and a nozzle is designed. It transmits and sprays cold air from the nozzle through the cold air circulation, accelerates the diffusion of heat near the heat sink, and adjusts the angle of the nozzle through the telescopic spring to improve heat dissipation efficiency.
It effectively accelerates the diffusion of heat near the heat sink, ensures the continuous thermal conductivity of the cooling circulating oil, and reduces the loss of the oil-immersed transformer.
Smart Images
Figure CN222939733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil-immersed transformers, and particularly relates to a first-level energy-efficient oil-immersed transformer. Background Technique
[0002] A first-level energy-efficient oil-immersed transformer is a kind of power equipment. It has a high energy efficiency level and usually meets or exceeds the energy efficiency standards of a country or region. Its core components, the winding and the iron core, are completely immersed in insulating oil. This design provides good insulation and cooling effects, helps prevent short circuits and maintains the stable operation of the equipment.
[0003] During the use of a first-level energy-efficient oil-immersed transformer, in order to ensure that the oil-immersed transformer has relatively good working conditions and working efficiency, it is necessary to dissipate the heat generated during the operation of the oil-immersed transformer. Therefore, an oil circulation cooling device is provided in the oil-immersed transformer. Through the circulation of the cooling oil in the radiators on the outside of the oil-immersed transformer, the working heat generated by the oil-immersed transformer gradually dissipates. However, when the oil-immersed transformer works in a relatively narrow enclosed fixed space, the heat dissipated by the radiator of the oil-immersed transformer is easily accumulated near the radiator, and the heat transfer and dissipation speed around the radiator is relatively slow. Furthermore, it is easy to affect the continuous heat conduction performance of the cooling circulating oil inside the radiator, increasing the loss of the oil-immersed transformer. Therefore, a first-level energy-efficient oil-immersed transformer is proposed to solve the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide a first-level energy-efficient oil-immersed transformer to solve the problem that when the oil-immersed transformer works in a relatively narrow enclosed fixed space, the heat dissipated by the radiator of the oil-immersed transformer is easily accumulated near the radiator, and the heat transfer and dissipation speed around the radiator is relatively slow. Furthermore, it is easy to affect the continuous heat conduction performance of the cooling circulating oil inside the radiator, increasing the loss of the oil-immersed transformer.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] An oil-immersed transformer with first-level energy efficiency includes a chassis, a device box, low-voltage bushings, and high-voltage bushings. The device box is fixedly connected to the outside of the chassis. The low-voltage bushings are arranged on the outside of the device box, and the high-voltage bushings are arranged on the outside of the device box. The heat sink is fixedly connected to the outside of the device box, and the fan is arranged on the outside of the device box. The exhaust heat mechanism is fixedly connected to the outside of the device box. The exhaust heat mechanism includes an annular plate. The telescopic spring is fixedly connected to the outside of the annular plate. The fixed block is fixedly connected to the outside of the telescopic spring. The right-angle elbow is fixedly connected to the inside of the fixed block. The connecting hose is connected through the outside of the right-angle elbow. The air duct is rotatably connected to the inside of the right-angle elbow. The air duct includes a straight pipe. The rotary seal ring is fixedly connected to the outside of the straight pipe. The nozzle is connected through the outside of the straight pipe. The limiting frame is fixedly connected to the outside of the device box.
[0007] As a further optimized content of the present utility model, among them: The number of the limiting frames is eight in total. The limiting frames are evenly distributed on the outside of the device box. The limiting frames are in a 90° right angle bend and are in close contact with the nozzles.
[0008] As a further optimized content of the present utility model, among them: The number of the right-angle elbows is four in total. The right-angle elbows are evenly distributed at the four corners of the device box. The right-angle elbows are fixedly connected to the straight pipe through the rotary seal ring.
[0009] As a further optimized content of the present utility model, among them: A number of nozzles are equidistantly distributed on the outside of the straight pipe. A heat sink is arranged between two adjacent nozzles on the outside of the straight pipe. The four right-angle elbows are interconnected through the straight pipe.
[0010] As a further optimized content of the present utility model, among them: The nozzles are arranged between the limiting frames and the device box, and the nozzles are inclined in a direction away from the device box.
[0011] The straight pipe is arranged below the heat sink. The straight pipe moves up and down on the outside of the device box and does not contact the device box.
[0012] As a further optimized content of the present utility model, among them: The connecting hose is interconnected with the fan. The connecting hose is only connected to one of the right-angle elbows. Two fixed blocks are symmetrically arranged on the outside of the right-angle elbow.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] In the present utility model, through the provided fan, annular plate, telescopic spring, right-angle elbow, air duct, and nozzle, during the operation of the oil-immersed transformer, the fan can be started. The fan inputs cold air into the right-angle elbow through a connecting hose, and the cold air input into the right-angle elbow circulates and transfers in the straight pipe and is ejected from the nozzle connected to the straight pipe near the radiator, thereby accelerating the diffusion of heat near the radiator. Moreover, with the mechanical vibration of the oil-immersed transformer, the telescopic spring can control the nozzle to move up and down closely against the limit frame, thereby finely adjusting the angle of the cold air ejected by the nozzle, so as to improve the diffusion efficiency of the accumulated heat near the radiator, ensure the continuous heat conduction performance of the cooling circulating oil inside the radiator, and reduce the loss of the oil-immersed transformer. Brief Description of the Drawings
[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0016] Figure 2 is a schematic diagram of the exploded structure of the annular plate of the present utility model;
[0017] Figure 3 For the present utility model Figure 2 is a schematic diagram of the structure at position A;
[0018] Figure 4 is a schematic diagram of the straight pipe structure of the present utility model;
[0019] Figure 5 is a schematic diagram of the internal structure of the right-angle elbow of the present utility model.
[0020] In the figure: 1, chassis; 2, device box; 3, low-voltage bushing; 4, high-voltage bushing; 5, radiator; 6, fan; 7, heat exhaust mechanism; 71, annular plate; 72, telescopic spring; 73, fixed block; 74, right-angle elbow; 75, connecting hose; 76, air duct; 761, straight pipe; 762, rotary seal ring; 763, nozzle; 8, limit frame. Detailed Description of the Embodiment
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution:
[0024] A first-level energy-efficient oil-immersed transformer includes a chassis 1, a device box 2, a low-voltage bushing 3, and a high-voltage bushing 4. The outside of the chassis 1 is fixedly connected to the device box 2. The outside of the device box 2 is provided with the low-voltage bushing 3. The outside of the device box 2 is provided with the high-voltage bushing 4. The outside of the device box 2 is fixedly connected to a heat sink 5. The outside of the device box 2 is provided with a fan 6. The outside of the device box 2 is fixedly connected to a heat exhaust mechanism 7. The heat exhaust mechanism 7 includes an annular plate 71. The outside of the annular plate 71 is fixedly connected to a telescopic spring 72. The outside of the telescopic spring 72 is fixedly connected to a fixed block 73. The inside of the fixed block 73 is fixedly connected to a right-angle elbow 74. The outside of the right-angle elbow 74 is connected through a connecting hose 75. The inside of the right-angle elbow 74 is rotatably connected to an air duct 76. The air duct 76 includes a straight pipe 761. The outside of the straight pipe 761 is fixedly connected to a rotary seal ring 762. The outside of the straight pipe 761 is connected through a spray head 763. The outside of the device box 2 is fixedly connected to a limit frame 8.
[0025] As a further implementation of this solution, there are a total of eight limit frames 8. The limit frames 8 are evenly distributed on the outside of the device box 2. The limit frames 8 are in a 90° right angle bend and are in close contact with the spray heads 763, which is convenient for restricting the spray heads 763 to a certain extent;
[0026] As a further implementation of this solution, there are a total of four right-angle elbows 74. The right-angle elbows 74 are evenly distributed at the four corners of the device box 2. The right-angle elbows 74 are fixedly connected to the straight pipe 761 through the rotary seal ring 762, which can ensure the circulation of cold air transmission in the straight pipe 761;
[0027] As a further implementation of this solution, a number of spray heads 763 are equidistantly distributed on the outside of the straight pipe 761. There is a heat sink 5 between two adjacent spray heads 763 on the outside of the straight pipe 761. The four right-angle elbows 74 are interconnected through the straight pipe 761, which is convenient for blowing away the heat accumulated between the heat sinks 5;
[0028] As a further implementation of this solution, the spray heads 763 are arranged between the limit frames 8 and the device box 2. The spray heads 763 are inclined in a direction away from the device box 2, which is convenient for the spray heads 763 to adjust the action angle with the elastic change of the telescopic spring 72;
[0029] As a further implementation of this solution, the straight pipe 761 is arranged below the heat sink 5. The straight pipe 761 moves up and down outside the device box 2 and does not adhere to the device box 2, which is convenient for quickly dissipating the heat in the heat sink 5.
[0030] As a further implementation of this solution, the connecting hose 75 is interconnected with the fan 6. The connecting hose 75 is only connected to one of the right-angle elbows 74. Two fixing blocks 73 are symmetrically arranged on the outside of the right-angle elbow 74, which can ensure that the straight pipe 761 moves up and down in a relatively stable manner.
[0031] Working process: During use, the device is powered on by an external power supply. When using this first-level energy-efficient oil-immersed transformer, the fan 6 outside the device box 2 of the oil-immersed transformer can be started simultaneously. The start of the fan 6 can generate cold air and transport the cold air through the connecting hose 75 to the right-angle elbow 74 fixedly connected to the connecting hose 75. The right-angle elbows 74 arranged at the four corner positions outside the device box 2 are connected to the straight pipe 761 through the rotary seal ring 762 to form an integral closed loop. In this way, the cold air transported by the connecting hose 75 can be transmitted in the straight pipe 761. Since a number of spray nozzles 763 are fixedly connected to the outside of the straight pipe 761, and any adjacent group of spray nozzles 763 are arranged on both sides of the heat sink 5 of the oil-immersed transformer, the cold air sprayed from the spray nozzles 763 can directly act between the heat sinks 5, so that the cold air output from bottom to top can quickly dissipate the heat accumulated between the heat sinks 5. Moreover, when mechanical vibration occurs inside the oil-immersed transformer, the telescopic spring 72 fixedly connected to the outer ring plate 71 of the device box 2 will undergo a certain degree of elastic deformation. In this way, the fixing block 73 fixedly connected to the telescopic spring 72 can drive the right-angle elbow 74 to move up and down. During the up and down movement of the right-angle elbow 74, the right-angle elbow 74 can drive the straight pipe 761 to move simultaneously. However, the spray nozzles 763 fixedly connected to the straight pipe 761 are inclined and closely attached to the limiting frame 8. Therefore, with the movement of the straight pipe 761, the straight pipe 761 rotates in the right-angle elbow 74 through the rotary seal ring 762, and the contact positions between the spray nozzles 763 and the limiting frame 8 are also different. In this way, the action angles of the cold air sprayed by the spray nozzles 763 also change, so as to better quickly dissipate the heat between the heat sinks 5, improve the diffusion efficiency of the heat accumulated near the heat sinks 5, ensure the continuous heat conduction performance of the cooling circulating oil inside the heat sinks 5, and reduce the loss of the oil-immersed transformer.
[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A first-class energy-efficient oil-immersed transformer, characterized in that: The invention comprises a base frame (1), a device box (2), a low-voltage bushing (3) and a high-voltage bushing (4), and is characterized in that: the outer side of the base frame (1) is fixedly connected to the device box (2), the outer side of the device box (2) is provided with a low-voltage bushing (3), the outer side of the device box (2) is provided with a high-voltage bushing (4), the outer side of the device box (2) is fixedly connected to a heat sink (5), the outer side of the device box (2) is provided with a fan (6), the outer side of the device box (2) is fixedly connected to a heat dissipation mechanism (7), the heat dissipation mechanism (7) comprises a ring plate (71), the outer side of the ring plate (71) is fixedly connected to a telescopic A spring (72), the outer side of the telescopic spring (72) is fixedly connected to a fixed block (73), the inner side of the fixed block (73) is fixedly connected to a right-angle elbow (74), the outer side of the right-angle elbow (74) is connected to a connecting hose (75), the inner side of the right-angle elbow (74) is rotatably connected to an air supply pipe (76), the air supply pipe (76) comprises a straight pipe (761), the outer side of the straight pipe (761) is fixedly connected to a rotating sealing ring (762), the outer side of the straight pipe (761) is connected to a nozzle (763), and the outer side of the device box (2) is fixedly connected to a limiting frame (8).
2. The first-class energy-efficient oil-immersed transformer according to claim 1, characterized in that: There are eight limit frames (8) in total. The limit frames (8) are evenly distributed outside the device box (2). The limit frames (8) are bent at a 90° right angle. The limit frames (8) are in close contact with the nozzle (763).
3. The first-level energy-efficient oil-immersed transformer according to claim 1, characterized in that: There are four right-angle elbows (74) in total. The right-angle elbows (74) are evenly distributed at the four corners of the device box (2). The right-angle elbows (74) are fixedly connected to the straight pipe (761) via a rotating sealing ring (762).
4. The first-level energy-efficient oil-immersed transformer according to claim 1, characterized in that: A plurality of nozzles (763) are evenly distributed outside the straight tube (761), a heat sink (5) is provided between two adjacent nozzles (763) outside the straight tube (761), and the right-angle elbows (74) are interconnected through the straight tube (761).
5. The first-class energy-efficient oil-immersed transformer according to claim 1, characterized in that: The spray head (763) is arranged between the limiting frame (8) and the device box (2), and the spray head (763) is inclined in a direction away from the device box (2).
6. The first-level energy-efficient oil-immersed transformer according to claim 1, characterized in that: The straight tube (761) is arranged below the heat sink (5), and the straight tube (761) moves up and down outside the device box (2); the straight tube (761) is not in contact with the device box (2).
7. The first-level energy-efficient oil-immersed transformer according to claim 1, characterized in that: The connecting hose (75) is in communication with the fan (6); the connecting hose (75) is connected to only one of the right-angle elbows (74); and two fixing blocks (73) are symmetrically arranged on the outside of the right-angle elbow (74).