Box transformer substation heat dissipation device

Abstract

The utility model discloses a box transformer substation heat radiation device in the technical field of box transformer substation heat radiation, which comprises inclined air exhaust units and air inlet units, the inclined air exhaust units are arranged at the upper parts of side doors at the two ends of a transformation chamber of a box transformer substation, and the air inlet units are arranged at the lower parts of the side doors at the two ends of the transformation chamber. Cold air below the outside of the box-type transformer substation enters the transformer chamber from the air inlet unit, after heat exchange with hot air in the box-type transformer substation, the hot air rises and is exhausted from the box-type transformer substation outwards and obliquely through the oblique air exhaust unit, so that the heat dissipation effect in the box-type transformer substation is ensured through circulation of cold and heat exchange, the hot air can be exhausted obliquely and downwards, and the heat dissipation efficiency of the box-type transformer substation is improved. And the heat dissipation effect of the box transformer substation is prevented from being influenced by temperature rise below the outside of the box transformer substation.

Description

Technical Field

[0001] This utility model relates to a heat dissipation device for transformer substations in the field of transformer substation heat dissipation technology. Background Technology

[0002] A prefabricated substation, also known as a prefabricated transformer substation, is a factory-prefabricated, compact indoor / outdoor power distribution unit that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment according to a specific wiring scheme. It organically combines transformer voltage reduction and low-voltage power distribution functions, housed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, theft-proof, heat-insulated, fully enclosed, and movable steel structure box. Within the steel structure box, the transformer and low-voltage switchgear generate a significant amount of heat during operation, requiring effective heat dissipation. Current technology typically involves installing exhaust fans at the top of the main entrances at both ends of the transformer compartment, with louvers at the bottom for cooling. Protective covers are also installed to prevent rainwater backflow from the exhaust fan outlets, with the opening at the bottom. However, this design causes the exhausted hot air to flow downwards, increasing the temperature at the bottom of the transformer compartment and raising the temperature of the cool air entering the transformer compartment through the lower louvers of the main entrance, thus affecting the overall heat dissipation effect inside the transformer. Utility Model Content

[0003] The purpose of this invention is to provide a heat dissipation device for transformer substations that allows hot air to be discharged obliquely downwards, thus preventing the temperature at the bottom of the transformer substation from rising and affecting its heat dissipation effect.

[0004] To achieve the above objectives, this utility model provides a heat dissipation device for a transformer substation, including an inclined exhaust unit and an air intake unit. The inclined exhaust unit is located on the upper part of the side doors at both ends of the transformer chamber of the transformer substation, and the air intake unit is located on the lower part of the side doors at both ends of the transformer chamber.

[0005] Compared with the prior art, the beneficial effect of this utility model is that the cold air below the outside of the transformer box enters the transformer room through the air intake unit, exchanges heat with the hot air inside the transformer box, and then the hot air rises and is discharged outwards at an angle through the inclined exhaust unit. This cycle of heat exchange ensures the heat dissipation effect inside the transformer box and allows the hot air to be discharged at an angle downwards, preventing the temperature below the outside of the transformer box from rising and affecting the heat dissipation effect of the transformer box.

[0006] As a further improvement of this utility model, the inclined exhaust unit includes an exhaust fan, the exhaust fan's outlet is surrounded by an exhaust hood, the exhaust hood has an exhaust port on its front side, the exhaust port is inclined inward from top to bottom, and the exhaust hood's top plate has a downwardly bent baffle at its front end, the lower end of the baffle being the top of the exhaust port.

[0007] When the exhaust fan is running normally, it can quickly exhaust the hot air inside the transformer room to the outside. After the hot air is guided by the exhaust hood, it can be discharged obliquely downward from the exhaust port. The baffle is bent obliquely downward, which can play a role in sheltering from wind and rain and preventing external wind and rain from flowing back into the transformer.

[0008] As a further improvement of this utility model, the tilt angle of the exhaust vent is 45 degrees.

[0009] This angle ensures that the hot air from the exhaust vent will not mix with the cold air directly below the transformer due to the small angle, and also prevents wind and rain from flowing back into the transformer if the exhaust vent angle is too large.

[0010] The bottom of the exhaust hood has a drain outlet, which is covered with a filter screen.

[0011] This way, even when there is heavy wind and rain outside, some rainwater will flow down along the inside of the exhaust hood and out through the drain, preventing water from accumulating inside the exhaust hood.

[0012] As a further improvement of this utility model, the air intake unit includes an air intake louver, and a filter screen is covered on one side of the air intake louver inside the transformer.

[0013] In this way, the cold air below the outside of the transformer can enter the transformer through the air inlet louvers, and large particles of impurities from the outside are blocked by the filter screen, preventing debris from entering the transformer.

[0014] As a further improvement of this utility model, a filter screen is provided at the exhaust port.

[0015] This prevents large external particles from entering the transformer substation.

[0016] As a further improvement of this utility model, the inclined exhaust unit and the air inlet unit are respectively installed at the upper and lower parts of the main door of the low-voltage room of the transformer substation.

[0017] In this way, the heat generated by the low-voltage switchgear in the low-voltage compartment can be directly discharged from the upper part of the main door of the low-voltage compartment through the inclined exhaust unit, further improving the heat dissipation effect inside the transformer.

[0018] As a further improvement of this utility model, the lower part of the main door of the high-voltage room of the transformer substation is provided with several rows of heat dissipation holes, the upper part of the main door of the high-voltage room is provided with heat dissipation louvers, and the upper and lower parts of the side doors at both ends of the high-voltage room of the transformer substation are provided with several rows of heat dissipation holes.

[0019] Since the high-voltage cabinet in the high-voltage room generates relatively little heat, it is only necessary to equip its three doors with heat dissipation louvers and ventilation holes to achieve a good heat dissipation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 .

[0022] The components include: 1. Heat dissipation hole; 2. Air inlet louver; 3. Exhaust hood; 4. Exhaust fan; 5. Transformer box; 6. Exhaust vent; 7. Heat dissipation louver; 8. Top plate; 9. Bending baffle; and 10. Drain outlet. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figure 1-2 The heat dissipation device of the transformer substation shown includes an inclined exhaust unit and an air intake unit. The inclined exhaust unit is located on the upper part of the side doors at both ends of the transformer chamber of the transformer substation 5, and the air intake unit is located on the lower part of the side doors at both ends of the transformer chamber.

[0025] The inclined exhaust unit includes an exhaust fan 4, the outlet of which is surrounded by an exhaust hood 3. An exhaust port 6 is located on the front of the exhaust hood 3, and the exhaust port 6 is inclined inwards from top to bottom. A downwardly bent baffle 9 is machined at the front end of the top plate 8 of the exhaust hood 3, with the lower end of the baffle 9 forming the top of the exhaust port 6. The inclination angle of the exhaust port 6 is 45 degrees. A drain outlet 10 is located at the bottom of the exhaust hood 3, and a filter screen is installed at the drain outlet 10.

[0026] The air intake unit includes air intake louvers 2, which are covered with a filter screen on one side inside the transformer substation 5. A filter screen is also installed at the exhaust vent 6. The inclined exhaust unit and air intake unit are also respectively installed above and below the main entrance of the low-voltage compartment of the transformer substation 5. Several rows of heat dissipation holes 1 are provided at the lower part of the main entrance of the high-voltage compartment of the transformer substation 5, and heat dissipation louvers 7 are provided at the upper part of the main entrance of the high-voltage compartment. Several rows of heat dissipation holes 1 are also provided at the upper and lower parts of the side doors at both ends of the high-voltage compartment of the transformer substation 5.

[0027] In this utility model, the transformer substation 5 is generally divided into three parts: a high-voltage chamber, a transformer chamber, and a low-voltage chamber. The transformer chamber is located between the high-voltage chamber and the low-voltage chamber. The high-voltage cabinet is installed in the high-voltage chamber, the transformer is installed in the transformer chamber, and the low-voltage cabinet is installed in the low-voltage chamber. In the entire transformer substation 5, the transformer and the low-voltage cabinet are the main sources of heat generation.

[0028] To improve heat dissipation and save costs, inclined exhaust units are installed on the upper part of the main doors at both ends of the transformer room and the upper part of the main door of the low-voltage room. Air intake units are installed on the lower part of the main doors at both ends of the transformer room and the lower part of the main door of the low-voltage room. A heat dissipation hole 1 is opened at the lower part of the main door of the high-voltage room. A heat dissipation louver 7 is installed on the upper part of the main door of the high-voltage room. Heat dissipation holes 1 are opened on the upper and lower parts of the side doors at both ends of the high-voltage room.

[0029] During operation, the transformer generates heat. Cool air enters the transformer chamber through the air inlet louvers 2 at the bottom of the main entrance, where it exchanges heat with the heat generated by the transformer. Meanwhile, the exhaust fan 4 operates, expelling the hot air from the transformer chamber. Since the exhaust vent 6 of the exhaust hood 3 is inclined inward from top to bottom, the hot air is guided from the exhaust fan 4's outlet through the exhaust hood 3 and then discharged obliquely downward from the exhaust vent 6. This prevents the hot air from crossing with the cool air directly below the transformer chamber, thus minimizing the temperature increase of the cool air in that area. This creates a cooling process that alternates between hot and cold air circulation from the outside to the inside, then from the bottom to the top, and finally from the inside to the outside.

[0030] Because both ends of the transformer room are equipped with inclined exhaust and intake units, the heat generated by the transformer can be dissipated more quickly, avoiding the problem of heat accumulating in the transformer room and causing excessive temperature.

[0031] Similarly, the cold air below the outside of the low-pressure chamber enters the low-pressure chamber through the air inlet louvers 2 at the bottom of its main door, and exchanges heat with the heat generated by the low-pressure cabinet in the low-pressure chamber. The rising hot air is directly discharged to the outside through the exhaust fan 4 at the top of the main door of the low-pressure chamber, thus forming good heat dissipation.

[0032] The high-voltage cabinet in the high-voltage room generates relatively little heat, which is directly discharged to the outside through the heat dissipation holes 1 on the front door and the side, as well as the heat dissipation louvers 7. Moreover, since there are connecting openings on the partition between the high-voltage room and the transformer room, as well as on the partition between the transformer room and the low-voltage room, the heat between the three can also be exchanged, so that the temperature inside the entire transformer 5 is kept within a relatively stable range and there will be no problem of local overheating.

[0033] This invention improves heat dissipation by setting an angled exhaust unit so that the exhaust hot air does not cross with the cold air directly below the transformer 5.

[0034] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A transformer substation heat dissipation device, characterized in that: It includes an inclined exhaust unit and an air intake unit. The inclined exhaust unit is located on the upper part of the side doors at both ends of the transformer room of the transformer box, and the air intake unit is located on the lower part of the side doors at both ends of the transformer room. The inclined exhaust unit includes an exhaust fan, the exhaust fan's outlet is surrounded by an exhaust hood, the exhaust hood has an exhaust port on the front, the exhaust port is inclined inward from top to bottom, and the exhaust hood's top plate has a downwardly bent baffle at the front end, the lower end of the baffle is the top of the exhaust port. The exhaust vent is tilted at 45 degrees; a drain outlet is provided at the bottom of the exhaust hood, and a filter screen is provided at the drain outlet; the air inlet unit includes an air inlet louver, and a filter screen is provided on the side of the air inlet louver inside the transformer; a filter screen is provided at the exhaust vent.

2. The heat dissipation device for a transformer substation according to claim 1, characterized in that: The inclined exhaust unit and the air intake unit are respectively located above and below the main door of the low-voltage room of the transformer substation.

3. The transformer substation heat dissipation device according to claim 2, characterized in that: The high-voltage room of the transformer substation has several rows of ventilation holes at the bottom of the main entrance and ventilation louvers at the top. The side doors at both ends of the high-voltage room of the transformer substation also have several rows of ventilation holes at the top and bottom.

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