Dry-type transformer with good heat dissipation performance

Abstract

The dry-type transformer with the good heat dissipation performance comprises an outer frame and a transformer body, an air inlet is formed in one side of the outer frame, an air outlet is formed in the other side of the outer frame, filter screens are arranged on the outer side of the air inlet and the outer side of the air outlet, and a fan is arranged in the air inlet. The utility model has the advantages that by arranging the fan, the water tank, the gas gathering hopper, the cooling pipe, the gas supply hopper, the refrigerator and the like, the refrigerator works to reduce the temperature of cooling water in the water tank, the fan is started to apply power to gas, so that the gas flows, and external gas enters the outer frame from the gas inlet; cooling water enters the cooling pipe through the air gathering hopper and passes through the water tank along with the cooling pipe, heat exchange is conducted between the cooling water and air, the temperature of the air is reduced, and then the air is conveyed to all positions in the outer frame through the air conveying hopper to cool the transformer body. And cooling water does not need to be sprayed on the transformer main body, so that the transformer is safer and more convenient and has stronger applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a dry-type transformer with good heat dissipation performance. Background Art

[0002] A dry-type transformer is a special transformer whose core and winding are not immersed in insulating oil, but are isolated from current and prevent arcing by special insulating materials. It does not require oil for cooling and has a series of significant features and advantages.

[0003] For example, a dry-type transformer with good heat dissipation performance, with announcement number CN220439361U, is provided with a water inlet pipe valve, an annular spray pipe, and a nozzle. The cooling water is introduced into the annular spray pipe through the water inlet pipe valve and sprayed on the outer surface of the transformer body from the nozzle. The cooling water can flow downward along the transformer body and take away the heat on the surface of the transformer body. The fan operates on the basis of the nozzle spraying the transformer body, which can accelerate the volatilization speed of the cooling water on the surface of the transformer body and further improve the heat dissipation effect of the transformer body. However, directly spraying cooling water on the transformer puts forward higher requirements on the waterproof performance of the transformer, and it is necessary to ensure that the supporting wires and equipment also have high waterproof performance, and it cannot be adapted to some transformers with general waterproof performance. For this reason, a dry-type transformer with good heat dissipation performance is proposed for improvement. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the utility model is to provide a dry-type transformer with good heat dissipation performance to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a dry-type transformer with good heat dissipation performance, including an outer frame and a transformer body, an air inlet is provided on one side of the outer frame, an exhaust port is provided on the other side of the outer frame, filters are provided on the outsides of the air inlet and the exhaust port, a fan is provided in the air inlet, a water tank is provided in the outer frame, a cooling pipe is provided in the water tank, an end of the cooling pipe close to the fan is fixedly connected to an air collecting hopper, a side of the cooling pipe away from the fan is fixedly connected to an air supply hopper, and a refrigerator is provided on one side of the water tank;

[0007] The top and the bottom of the transformer body are both provided with heat dissipation fins, the front and the back of the transformer body are both provided with heat dissipation plates, and the heat dissipation plates are provided with ventilation holes.

[0008] Preferably, any of the above schemes has legs fixedly connected to the bottom of the outer frame, and the transformer body is fixedly connected inside the outer frame.

[0009] Preferably, any of the above solutions has two exhaust ports, which are respectively arranged on both sides of the transformer body.

[0010] The above technical solution is adopted: the outer frame provides an installation platform for the transformer body and provides certain protection for it. The legs arranged at the bottom of the outer frame support the outer frame to ensure its stability. The transformer body is fixed in the outer frame to avoid displacement of the transformer body during transportation or installation. The air inlet and the exhaust port are used to allow external gas to enter the outer frame and to discharge the gas in the outer frame respectively. Filters are arranged on the outside of the two ports to prevent dust and impurities in the external gas from entering the outer frame from the air inlet and exhaust ports, thereby ensuring the cleanliness of the inside of the outer frame.

[0011] Preferably, any of the above schemes has a height of the water tank that matches the height of the transformer body, and the water tank is filled with cooling water.

[0012] Preferably, in any of the above schemes, two ends of the cooling pipe extend from two sides of the water tank respectively and sealing rings are provided at the extending positions thereof.

[0013] The above technical solution is adopted: the fan applies power to the gas to make the gas flow, so that the external gas can enter the outer frame and the gas in the outer frame can be discharged to the outside. The water tank provides a storage space for cooling water, and cooperates with the refrigerator to keep the cooling water in it at a low temperature. The cooling pipe is used to guide the flow of gas. After the fan applies power, the external gas enters the cooling pipe from the gas collecting hopper. Under the guidance of the cooling pipe, the airflow passes through the water tank and is discharged from the air delivery hopper into the outer frame, blowing through the surface of the transformer body to take away the heat on the transformer body.

[0014] Preferably, any of the above schemes has a plurality of cooling pipes which are spirally arranged in the water tank, and a plurality of air supply hoppers which are evenly arranged on the outside of the water tank.

[0015] Preferably, any of the above schemes is that the heat dissipation fins are arranged through the outer frame, and the heat dissipation plate is arranged inclined in a direction away from the fan.

[0016] The above technical solution is adopted: the cooling pipe is spirally arranged in the water tank, so that the gas flows in the water tank for a sufficient time for the cooling water and gas to exchange heat. The temperature of the gas decreases after passing through the water tank, and then it is sent to various places in the outer frame through the air supply hopper to cool down the transformer body. The heat dissipation fins extend out of the outer frame and directly transfer the heat of the transformer body to the outside, and the auxiliary heat dissipation structure dissipates the heat of the transformer body. The obliquely arranged heat dissipation plate follows the direction of the airflow, so that the airflow takes away the heat of the transformer body, and the ventilation holes opened on it can allow the gas to pass through, ensuring the smooth flow of the gas.

[0017] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0018] 1. The dry-type transformer with good heat dissipation performance is provided with a fan, a water tank, an air collecting bucket, a cooling pipe, an air supply bucket and a refrigerator. The refrigerator works to reduce the temperature of the cooling water in the water tank, and the fan is started. The fan applies power to the gas to make the gas flow. The external gas enters the outer frame from the air inlet, enters the cooling pipe through the air collecting bucket and passes through the water tank with the cooling pipe. The cooling water exchanges heat with the air to reduce the air temperature. The air is then sent to various places in the outer frame through the air supply bucket to cool the transformer body. There is no need to spray cooling water on the transformer body, which is safer, more convenient and more applicable.

[0019] 2. For this dry-type transformer with good heat dissipation performance, the cooling pipe is spirally arranged in the water tank, so that the gas flows in the water tank for a sufficient time for the cooling water to exchange heat with the gas. The heat dissipation fins extend out of the outer frame, directly transferring the heat of the transformer body to the outside, and assisting the heat dissipation structure to dissipate the heat of the transformer body. The obliquely arranged heat dissipation plate follows the direction of the airflow, so that the airflow takes away the heat of the transformer body, and the ventilation holes opened on it allow the gas to pass through, ensuring the smooth flow of the gas.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the transformer main body of the utility model;

[0025] Figure 4 It is a schematic diagram of the cutaway structure of the water tank of the utility model.

[0026] In the figure: 1-outer frame, 2-transformer body, 3-air inlet, 4-exhaust port, 5-filter, 6-fan, 7-water tank, 8-air collecting hopper, 9-cooling pipe, 10-air supply hopper, 11-refrigerator, 12-heat dissipation fins, 13-heat dissipation plate, 14-ventilation hole, 15-leg. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, the utility model comprises an outer frame 1 and a transformer body 2, an air inlet 3 is provided on one side of the outer frame 1, an exhaust port 4 is provided on the other side of the outer frame 1, a filter screen 5 is provided on the outside of the air inlet 3 and the exhaust port 4, a fan 6 is provided in the air inlet 3, a water tank 7 is provided in the outer frame 1, a cooling pipe 9 is provided in the water tank 7, an end of the cooling pipe 9 close to the fan 6 is fixedly connected to an air collecting bucket 8, a side of the cooling pipe 9 away from the fan 6 is fixedly connected to an air delivery bucket 10, and a refrigerator 11 is provided on one side of the water tank 7;

[0030] The top and bottom of the transformer body 2 are both provided with heat dissipation fins 12 , the front and back of the transformer body 2 are both provided with heat dissipation plates 13 , and ventilation holes 14 are opened on the heat dissipation plates 13 .

[0031] Embodiment 1: The bottom of the outer frame 1 is fixedly connected with a leg 15, and the transformer body 2 is fixedly connected in the outer frame 1. There are two exhaust ports 4, which are respectively arranged on both sides of the transformer body 2. The outer frame 1 provides an installation platform for the transformer body 2 and provides a certain degree of protection for it. The leg 15 arranged at the bottom of the outer frame 1 supports the outer frame 1 to ensure its stability. The transformer body 2 is fixed in the outer frame 1 to avoid displacement of the transformer body 2 during transportation or installation. The air inlet 3 and the exhaust port 4 are respectively used to allow external air to enter the outer frame 1 and to discharge the gas in the outer frame 1. A filter 5 is arranged on the outside of the two to prevent dust and impurities in the external air from entering the outer frame 1 from the air inlet 3 and the exhaust port 4, thereby ensuring the cleanliness of the inside of the outer frame 1.

[0032] Embodiment 2: The height of the water tank 7 matches the height of the transformer body 2, and the water tank 7 is filled with cooling water. The two ends of the cooling pipe 9 extend from the two sides of the water tank 7 respectively, and sealing rings are provided at the extending positions. The fan 6 applies power to the gas to make the gas flow so that the external gas can enter the outer frame 1 and the gas in the outer frame 1 can be discharged outward. The water tank 7 provides a storage space for cooling water, and cooperates with the refrigerator 11 to keep the cooling water therein at a low temperature. The cooling pipe 9 is used to guide the flow of gas. After the external gas is powered by the fan 6, it enters the cooling pipe 9 from the gas collecting bucket 8. Under the guidance of the cooling pipe 9, the airflow passes through the water tank 7 and is discharged from the air supply bucket 10 into the outer frame 1, blowing over the surface of the transformer body 2 to take away the heat on the transformer body 2.

[0033] Embodiment 3: There are several cooling pipes 9 and they are all spirally arranged in the water tank 7, and there are several air supply hoppers 10 and they are evenly arranged on the outside of the water tank 7. The heat dissipation fins 12 are arranged through the outer frame 1, and the heat dissipation plate 13 is inclined in the direction away from the fan 6. The cooling pipes 9 are spirally arranged in the water tank 7, so that the time for the gas to flow in the water tank 7 is sufficient for the cooling water and the gas to exchange heat. The temperature of the gas decreases after passing through the water tank 7, and then it is sent to various places in the outer frame 1 through the air supply hopper 10 to cool down the transformer body 2. The heat dissipation fins 12 extend out of the outer frame 1, directly transfer the heat of the transformer body 2 to the outside, and assist the heat dissipation structure to dissipate the heat of the transformer body 2. The obliquely arranged heat dissipation plate 13 follows the direction of the airflow, so that the airflow takes away the heat of the transformer body 2, and the ventilation holes 14 opened thereon can allow the gas to pass through, ensuring that the gas flows through the path smoothly.

[0034] The working principle of the utility model is as follows:

[0035] S1, the refrigerator 11 works to reduce the temperature of the cooling water in the water tank 7, and the fan 6 is started. The fan 6 applies power to the gas to make the gas flow, and the external gas enters the outer frame 1 from the air inlet 3;

[0036] S2, the outside air enters the cooling pipe 9 through the air collecting bucket 8 and passes through the water tank 7 along the cooling pipe 9, and the cooling water and air perform heat exchange to reduce the air temperature;

[0037] S3. The air is then delivered to various locations in the outer frame 1 through the air delivery hopper 10 to cool the transformer body 2.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The dry-type transformer with good heat dissipation performance is provided with structures such as a fan 6, a water tank 7, an air collecting bucket 8, a cooling pipe 9, an air supply bucket 10 and a refrigerator 11. The refrigerator 11 works to reduce the temperature of the cooling water in the water tank 7, and the fan 6 is started. The fan 6 applies power to the gas to make the gas flow. The external gas enters the outer frame 1 from the air inlet 3, enters the cooling pipe 9 through the air collecting bucket 8, and passes through the water tank 7 with the cooling pipe 9. The cooling water exchanges heat with the air to reduce the air temperature. The air is then sent to various places in the outer frame 1 through the air supply bucket 10 to cool the transformer body 2. There is no need to spray cooling water on the transformer body 2, which is safer, more convenient and more applicable.

[0040] 2. In this dry-type transformer with good heat dissipation performance, the cooling pipe 9 is spirally arranged in the water tank 7, so that the gas flows in the water tank 7 for a sufficient time for the cooling water to exchange heat with the gas. The heat dissipation fins 12 extend out of the outer frame 1, directly transferring the heat of the transformer body 2 to the outside, and assisting the heat dissipation structure to dissipate heat from the transformer body 2. The obliquely arranged heat dissipation plate 13 follows the direction of the airflow, so that the airflow takes away the heat of the transformer body 2, and the ventilation holes 14 opened thereon allow the gas to pass through, ensuring that the gas flows smoothly through the path.

Claims

1. A dry-type transformer with good heat dissipation performance, comprising an outer frame (1) and a transformer body (2); It is characterized in that An air inlet (3) is provided on one side of the outer frame (1), an air outlet (4) is provided on the other side of the outer frame (1), filters (5) are provided on the outside of the air inlet (3) and the air outlet (4), a fan (6) is provided in the air inlet (3), a water tank (7) is provided in the outer frame (1), a cooling pipe (9) is provided in the water tank (7), an end of the cooling pipe (9) close to the fan (6) is fixedly connected to an air collecting hopper (8), a side of the cooling pipe (9) away from the fan (6) is fixedly connected to an air supply hopper (10), and a refrigerator (11) is provided on one side of the water tank (7); The top and bottom of the transformer body (2) are both provided with heat dissipation fins (12), the front and back of the transformer body (2) are both provided with heat dissipation plates (13), and the heat dissipation plates (13) are provided with ventilation holes (14).

2. A dry-type transformer with good heat dissipation performance as claimed in claim 1, Features: A support leg (15) is fixedly connected to the bottom of the outer frame (1), and the transformer body (2) is fixedly connected inside the outer frame (1).

3. A dry-type transformer with good heat dissipation performance as claimed in claim 2, Features: There are two exhaust ports (4) which are respectively arranged on both sides of the transformer body (2).

4. A dry-type transformer with good heat dissipation performance as claimed in claim 3, Features: The height of the water tank (7) matches the height of the transformer body (2), and the water tank (7) is filled with cooling water.

5. A dry-type transformer with good heat dissipation performance as claimed in claim 4, Features: The two ends of the cooling pipe (9) extend out from both sides of the water tank (7) respectively, and sealing rings are provided at the extending positions.

6. A dry-type transformer with good heat dissipation performance as claimed in claim 5, Features: There are a plurality of cooling pipes (9) which are all spirally arranged in the water tank (7), and there are a plurality of air supply hoppers (10) which are evenly arranged outside the water tank (7).

7. A dry-type transformer with good heat dissipation performance as claimed in claim 6, Features: The heat dissipation fins (12) are arranged to penetrate the outer frame (1), and the heat dissipation plate (13) is arranged to be inclined in a direction away from the fan (6).

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