Transformer heat dissipation system

Abstract

The utility model discloses a transformer heat dissipation system which comprises an electrical room, a transformer is placed in the electrical room, two ventilation openings are formed in the left surface and the right surface of the electrical room, a heat dissipation fan is installed on the inner wall of the electrical room, and four filter plates are rotationally connected to the surface of the electrical room. The transformer is provided with a temperature sensor, the cooling fan is electrically connected with a frequency converter, the temperature sensor and the frequency converter are electrically connected with a controller, the temperature sensor monitors the temperature of the transformer in real time, when the temperature of the transformer reaches a set value, the cooling fan is started, and when the temperature of the transformer reaches the set value, the cooling fan is started; when the transformer is lowered to a set value, the cooling fan is turned off, automatic control can be achieved, the operation time of workers is shortened, the service life of the cooling fan is prolonged, and meanwhile electricity consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer heat dissipation, in particular to a transformer heat dissipation system. Background Art

[0002] Transformers generate a lot of heat during operation. If the heat cannot be effectively dissipated, the temperature of the transformer will continue to rise, which may cause equipment overheating, burnout and other faults, leading to power system failure.

[0003] Currently, most transformer rooms use cooling fans for air cooling, and the fans are manually controlled to start and stop, which simplifies wiring. However, manual control of the cooling fan's start and stop requires manual operation, requiring staff to inspect the transformer room temperature before deciding whether to start the cooling fan, which is quite cumbersome (for example, the cooling fan needs to be turned on when the transformer body temperature is 75 degrees Celsius, and turned off when the temperature drops below 55 degrees Celsius). This cooling solution has some drawbacks: long-term operation of the cooling fan will affect its service life cycle, the cooling fan is more susceptible to dust accumulation, and it also increases unnecessary power consumption. Utility Model Content

[0004] The purpose of the present invention is to provide a transformer heat dissipation system to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a transformer heat dissipation system, comprising an electrical room, wherein a transformer is placed in the electrical room, two vents are provided on the left and right surfaces of the electrical room, a heat dissipation fan is installed on the inner wall of the electrical room, and the heat dissipation fan forms an air duct from right to left in the electrical room to dissipate heat from the transformer;

[0006] Four filter plates are rotatably connected to the surface of the electrical room. The filter plates are rotated so that two of the filter plates block the corresponding vents. The four filter plates are used interchangeably in pairs. When cleaning the filter plates, dust can also be prevented from entering the electrical room. The transformer is provided with a temperature sensor. The heat dissipation fan is electrically connected to a frequency converter. The temperature sensor and the frequency converter are electrically connected to a controller.

[0007] The controller controls the start and stop of the cooling fan based on the temperature of the temperature sensor, thereby realizing automatic start and stop of the cooling fan without manual supervision.

[0008] Furthermore, a fixed pipe is connected to the inner wall of the electrical room, and the fixed pipe is connected to the vent. The heat dissipation fan is fixed to the inside of the fixed pipe. A filter is inserted into the surface of the fixed pipe. The filter can prevent some dust from adhering to the heat dissipation fan, thereby extending the cleaning cycle of the heat dissipation fan.

[0009] Furthermore, four positioning holes are provided on the surface of the electrical chamber, and the surface of the filter plate is screwed with a limit bolt, and the limit bolt is inserted into the positioning hole. The limit bolt is used to prevent the filter plate from rotating and keep the filter plate aligned with the vent.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) The temperature sensor monitors the transformer temperature in real time. When the transformer temperature reaches the set value, the cooling fan starts to speed up the air flow in the electrical room, which can quickly dissipate heat from the transformer. When the transformer temperature drops to the set value, the cooling fan is turned off. It can be automatically controlled to reduce the operator's operation time, increase the service life of the cooling fan, and reduce power consumption.

[0012] (2) The inverter detects the operating status of the cooling fan. When the cooling fan fails, the red indicator light will light up, which will help the staff to find the fault in time, avoid transformer cooling failure, and improve the stability of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the connection between the electrical chamber and the filter plate of the utility model;

[0015] Figure 3 This is the circuit diagram of the heat dissipation fan of the utility model.

[0016] In the figure: 1. Electrical room; 2. Transformer; 3. Temperature sensor; 4. Controller; 5. Cooling fan; 6. Inverter; 7. Ventilation port; 8. Fixed pipe; 9. Filter; 10. Rotating shaft; 11. Filter plate; 12. Positioning hole; 13. Limit bolt; 14. Green indicator light; 15. Red indicator light. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example:

[0019] See also Figure 1-3The utility model provides a technical solution: a transformer heat dissipation system, comprising an electrical room 1, a transformer 2 is placed in the electrical room 1, two vents 7 are provided on the left and right surfaces of the electrical room 1, a heat dissipation fan 5 is installed on the inner wall of the electrical room 1, and a plurality of heat dissipation fans 5 can be provided, so that the heat dissipation fan 5 can both supply air to the electrical room 1 and extract air from the electrical room 1, thereby maintaining a rapid flow of air in the electrical room 1 and achieving a good heat dissipation effect on the transformer 2;

[0020] The surface of the electrical room 1 is rotatably connected to four filter plates 11, which are rotated so that two of the filter plates 11 block the corresponding vents 7. The transformer 2 is provided with a temperature sensor 3. The heat dissipation fan 5 is electrically connected to a frequency converter 6. The temperature sensor 3 and the frequency converter 6 are electrically connected to a controller 4. The frequency converter 6 detects the speed of the heat dissipation fan 5. When the heat dissipation fan 5 fails, the controller 4 receives a fault signal of the heat dissipation fan 5 through the frequency converter 6.

[0021] The controller 4 controls the start and stop of the heat dissipation fan 5 based on the temperature of the temperature sensor 3 , and can automatically control the operation of the heat dissipation fan 5 .

[0022] In this embodiment, if Figure 1 As shown, the inner wall of the electrical room 1 is connected to a fixed pipe 8, and the fixed pipe 8 is connected to the vent 7. The heat dissipation fan 5 is fixed to the inside of the fixed pipe 8. A filter 9 is inserted into the surface of the fixed pipe 8. The filter 9 can block some dust and prevent dust from quickly adhering to the heat dissipation fan 5. The filter 9 can be pulled out for easy cleaning.

[0023] In this embodiment, if Figure 1 and Figure 2 As shown, a rotating shaft 10 is inserted into the surface of the electrical chamber 1 , and the filter plate 11 is sleeved on the surface of the rotating shaft 10 . The rotating shaft 10 facilitates the rotation of the filter plate 11 , ensuring that different filter plates 11 can correspond to the vents 7 .

[0024] In this embodiment, if Figure 2 As shown, four positioning holes 12 are provided on the surface of the electrical chamber 1, and the limit bolts 13 are screwed on the surface of the filter plate 11, and the limit bolts 13 are inserted into the positioning holes 12. The limit bolts 13 are loosened to separate from the positioning holes 12, and the filter plate 11 can be rotated, and the limit bolts 13 are loosened and inserted into the positioning holes 12 to limit the offset between the filter plate 11 and the vent 7.

[0025] In this embodiment, if Figure 3As shown, the controller 4 is electrically connected to a red indicator light 15 and a green indicator light 14. The green indicator light 14 indicates that the cooling fan 5 is operating normally, and the red indicator light 15 indicates that the cooling fan 5 has a fault. The cooling fan 5 is powered by three-phase electricity (L1, L2, L3, N). The cooling fan 5 is provided with a circuit breaker (QF1) and a contactor (KM1). When a serious overload, short circuit or undervoltage fault occurs, the circuit breaker automatically cuts off the circuit to prevent damage to the cooling fan 5. The contactor plays the role of connecting and disconnecting the load in the circuit.

[0026] The controller 4 is provided with a circuit breaker (QF2), a contactor (KM1), a first temperature switch (K1), and a second temperature switch (K2). The first temperature switch (K1) is disconnected when the temperature is lower than 55°C and closed when the temperature is higher than 55°C. The second temperature switch (K2) is closed when the temperature is higher than 75°C, thereby realizing the following functions: when the temperature of the transformer 2 is higher than 75°C, the cooling fan 5 is turned on for heat dissipation; when the temperature is lower than 55°C, the cooling fan 5 needs to be turned off.

[0027] Specifically, when in use, the temperature sensor 3 detects the temperature of the transformer 2 and sends an electrical signal to the controller 4. The controller 4 controls the operation of the cooling fans 5. The two cooling fans 5 are responsible for sending air into the electrical room 1 and extracting air from the electrical room 1. The flow of air accelerates the heat dissipation of the transformer 2. By setting the start and stop temperatures of the cooling fans 5, the automatic operation of the cooling fans 5 is achieved. The appropriate start and stop temperature thresholds are set according to the specifications and operating requirements of the transformer 2.

[0028] When the filter plate 11 needs to be cleaned, rotate it, loosen the limit bolt 13 and rotate the filter plate 11 so that the two unused filter plates 11 are aligned with the vent 7. At this time, the two filter plates 11 that need to be cleaned are at the bottom, and the filter plate 11 can be cleaned without affecting the normal filtration of the vent 7.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer heat dissipation system, characterized in that: It comprises an electrical room (1), a transformer (2) is placed in the electrical room (1), two ventilation openings (7) are provided on the left and right surfaces of the electrical room (1), and a heat dissipation fan (5) is installed on the inner wall of the electrical room (1); The surface of the electrical room (1) is rotatably connected to four filter plates (11), and the filter plates (11) are rotated so that two of the filter plates (11) block the corresponding ventilation openings (7). The transformer (2) is provided with a temperature sensor (3). The heat dissipation fan (5) is electrically connected to a frequency converter (6). The temperature sensor (3) and the frequency converter (6) are electrically connected to a controller (4). The controller (4) controls the start and stop of the cooling fan (5) based on the temperature of the temperature sensor (3).

2. A transformer heat dissipation system according to claim 1, characterized in that: The inner wall of the electrical room (1) is connected to a fixed pipe (8), and the fixed pipe (8) is communicated with the vent (7). The heat dissipation fan (5) is fixed to the inside of the fixed pipe (8), and a filter (9) is inserted into the surface of the fixed pipe (8).

3. The transformer heat dissipation system according to claim 1, characterized in that: A rotating shaft (10) is inserted into the surface of the electrical chamber (1), and the filter plate (11) is sleeved on the surface of the rotating shaft (10).

4. The transformer heat dissipation system according to claim 1, characterized in that: Four positioning holes (12) are provided on the surface of the electrical chamber (1), and a limiting bolt (13) is screwed onto the surface of the filter plate (11), and the limiting bolt (13) is inserted into the positioning hole (12).

5. The transformer heat dissipation system according to claim 1, characterized in that: The controller (4) is electrically connected to a red indicator light (15) and a green indicator light (14).

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