Landscape buried box transformer substation with external radiator

Abstract

The invention relates to the technical field of transformers, in particular to a landscape buried box transformer substation with an external radiator. The invention provides a landscape buried box transformer substation with an external radiator, which comprises a box body buried under the ground surface, a transformer arranged in the box body and used for realizing power supply and transformation operation, and a radiator arranged in the box body, the landscape box is arranged on the ground surface and is used for playing a role in beautifying the landscape; the base is arranged at the top of the box body, exposed on the ground surface and used for supporting the landscape box, and plate-shaped ventilation windows are arranged on the periphery of the base so as to prevent small animals or sundries from invading the landscape box; the heat dissipation assembly is arranged in the base and communicated with the transformer, and air cooling heat dissipation operation is carried out on insulating oil in the transformer by means of directionally flowing air; according to the box transformer substation, the heat dissipation assembly is designed, so that the heat dissipation structure is optimized through the external heat dissipation assembly, partition operation of cold air and hot air is achieved, and the heat dissipation effect of the transformer is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a landscape underground box transformer with an external radiator. Background Art

[0002] As a power facility that buries transformers and other equipment under the ground, underground box-type transformers are widely used in various places such as urban landscapes, residential areas, and commercial areas because of their small footprint and high aesthetics. However, since the transformer generates a lot of heat during operation, how to effectively dissipate heat has become a key issue in the design of underground box-type transformers.

[0003] Existing underground box transformers usually use plate-type ventilation windows at the base for natural heat dissipation, but this method has obvious defects: the plate-type ventilation windows have no obvious path distinction between the entry and exit of hot and cold air, which easily leads to the mixing of cold and hot air, thus affecting the heat dissipation effect. Especially in the summer when the temperature is high or the equipment load is heavy, the heat dissipation problem is particularly prominent, which may cause equipment overheating, performance degradation or even failure. Summary of the invention

[0004] The problem to be solved by the present application is that the existing underground box transformers usually adopt plate-type ventilation windows at the base for natural heat dissipation. However, the plate-type ventilation windows do not have obvious paths for the entry and exit of hot and cold air, which easily leads to the mixing of hot and cold air, thereby affecting the heat dissipation effect.

[0005] In order to solve the above technical problems, the present application provides a landscape underground box transformer with an external radiator, including a box buried under the ground, a transformer arranged inside the box, and used to realize power supply and transformation operations; a landscape box, arranged above the ground, and used to play a role in beautifying the landscape; a base, arranged on the top of the box and exposed above the ground, and used to support the landscape box, and plate-shaped ventilation windows are arranged around the base to prevent the invasion of small animals or debris; a heat dissipation component is arranged inside the base and connected to the transformer, and the insulating oil inside the transformer is cooled and dissipated by air with the help of directional flow of air.

[0006] Since the box transformer of the present application is designed with a heat dissipation component, the heat dissipation structure is optimized through an external heat dissipation component, the zoning operation of cold and hot air is realized, the heat dissipation effect of the transformer is significantly improved, and the problem in the prior art that the existing buried box transformers usually use plate-type ventilation windows at the base for natural heat dissipation, but the plate-type ventilation windows have no obvious path distinction for the entry and exit of cold and hot air, which easily leads to the mixing of cold and hot air, thereby affecting the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a front view structural schematic diagram of an embodiment.

[0008] Figure 2 It is a side structural schematic diagram of an embodiment.

[0009] Figure 3 Schematic diagram of circuit control of an embodiment.

[0010] In the figure: 1. Landscape box; 2. Ventilation window; 3. Base; 4. Cooling pipe; 5. Heat dissipation belt; 6. Channel; 7. Fan; 8. Oil outlet pipe; 9. Transformer; 10. Oil return pipe; 11. Box body. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0012] The present application relates to a landscape underground box transformer with an external radiator, such as Figure 1-3 As shown, the box transformer includes a box body 11, a base 3, a landscape box 1, and a heat dissipation component. The box body 11 is buried under the surface and is used to accommodate power equipment such as a transformer 9. The box body 11 has good sealing and waterproof properties to ensure the safe operation of the equipment in an underground environment. The base 3 is located on the top of the box body 11 and exposed above the surface. As a connecting part between the box body 11 and the ground, the base 3 is designed with a specific structure to support the landscape box 1 above and the built-in heat dissipation component. The landscape box 1 is arranged on the upper part of the base 3, coordinated with the surrounding environment, and plays a role in beautifying the landscape. The design of the landscape box 1 can be customized according to actual needs, such as being set in the form of a flower bed, a seat, etc. The heat dissipation component is arranged inside the base 3, connected to the transformer 9 through a pipeline, and supplemented by a fan 7 to achieve forced air cooling and heat dissipation operation with directional air flow.

[0013] When the transformer 9 is running, the heat generated is transferred to the heat dissipation component through the insulating oil, and the fan 7 in the heat dissipation component is started to inhale cold air from the outside, and the heat is taken away by heat exchange with the insulating oil through the heat dissipation component. The hot air after the heat exchange is discharged to the outside of the base 3, and the cold air continues to be inhaled for the next round of circulation. The hot and cold air separator ensures the separation of the paths of cold air and hot air, effectively avoids the mixing of cold and hot air, and improves the heat dissipation efficiency. Through the external radiator and the hot and cold air zoning operation, the heat dissipation effect of the transformer 9 is significantly improved, ensuring the stable operation of the equipment. The design of the landscape box 1 is coordinated with the surrounding environment, which not only meets the practical needs of power equipment, but also improves the aesthetics of the urban landscape. This box transformer is suitable for various places that require underground box transformers, such as urban landscape areas, residential areas, commercial areas, etc.

[0014] The heat dissipation assembly includes a radiator and a pipe. The radiator is vertically and fixedly arranged inside the base 3. As the core component of the heat dissipation system, the radiator is made of a copper-aluminum alloy material with high efficiency in heat dissipation, has a large heat dissipation area and good thermal conductivity to ensure that the heat generated by the transformer 9 can be effectively dissipated. The pipe includes an oil outlet pipe 8 and an oil return pipe 10, which are respectively connected to the radiator and the transformer 9. These pipes are important components of the heat dissipation system and are responsible for guiding the insulating oil inside the transformer 9 to the radiator for cooling and returning the cooled insulating oil to the transformer 9. The pipes are connected to the radiator and the transformer 9. The flange connection has the advantages of good sealing, easy installation, and detachability, which is convenient for the maintenance and inspection of the heat dissipation system. The height of the pipe openings connecting the oil outlet pipe 8, the transformer 9, and the radiator are all higher than the oil return pipe 10. This arrangement utilizes the temperature difference of the insulating oil to achieve self-circulating flow. When the transformer 9 is running, the internal insulating oil expands due to heat, and the density decreases. It rises to the radiator through the oil outlet pipe 8 for cooling. The density of the cooled insulating oil increases, and it flows back to the transformer 9 through the oil return pipe 10. This self-circulating flow mode does not require additional pumps or fan drives, thereby reducing energy consumption and operating costs.

[0015] During the normal operation of the transformer 9, the temperature of the internal insulating oil rises and the density decreases after being heated. The insulating oil rises to the radiator at a high place through the oil outlet pipe 8. The external cold air in the radiator exchanges heat with the insulating oil to take away the heat in the insulating oil. The density of the cooled insulating oil increases and the oil flows back to the inside of the transformer 9 through the oil return pipe 10 to continue to participate in the cooling cycle of the transformer 9. Since the height of the pipe openings connecting the oil outlet pipe 8 and the radiator and the transformer 9 is higher than the oil return pipe 10, the insulating oil can realize self-circulation flow by utilizing its own temperature difference. This design not only simplifies the structure of the heat dissipation system, but also improves the heat dissipation efficiency and ensures the stable operation of the transformer 9.

[0016] By utilizing the temperature difference of the insulating oil to achieve self-circulating flow, no additional pump or fan drive is required, which reduces energy consumption and operating costs. The radiator is made of high-efficiency heat dissipation material, has a large heat dissipation area and good thermal conductivity, can quickly dissipate the heat generated by the transformer 9, and ensure the stable operation of the equipment. The flange connection method makes the maintenance and overhaul of the heat dissipation system more convenient, and improves the maintainability and reliability of the equipment. The heat dissipation component is vertically and fixedly arranged inside the base 3, and combined with the landscape box 1, so that the entire buried box transformer has a compact structure and beautiful appearance. By optimizing the structure and layout of the heat dissipation component, self-circulating heat dissipation of the insulating oil is achieved, the heat dissipation efficiency is improved, and the energy consumption and operating costs are reduced.

[0017] In order to further improve the heat dissipation capacity, the radiator adopts a tube-belt radiator composed of a cooling tube 4 and a heat dissipation belt 5. This structure combines the efficient thermal conductivity of the cooling tube 4 and the advantage of the increased heat dissipation area of ​​the heat dissipation belt 5, making the heat dissipation effect more significant. The cooling tubes 4 are vertically and symmetrically arranged at both ends of the radiator, and are used to connect with the oil outlet pipe 8 and the oil return pipe 10. The insulating oil flowing out of the transformer 9 flows inside the cooling tube 4. Through heat exchange with the heat dissipation belt 5, the heat in the insulating oil is transferred to the external environment. There are multiple heat dissipation belts 5, which are horizontally arranged between the cooling tubes 4 and arranged at intervals along the arrangement direction of the cooling tubes 4. The heat dissipation belt 5 is made of a material with good thermal conductivity and corrosion resistance. The surface of the heat dissipation belt 5 is designed with a structure that increases air turbulence to improve the heat dissipation efficiency. Sufficient air flow channels 6 are left between the heat dissipation belts 5. The purpose of this design is to avoid the formation of a boundary layer on the surface of the heat dissipation belt 5 by the air flow. The existence of the boundary layer will hinder the heat exchange between the air and the heat dissipation belt 5 and reduce the heat dissipation effect. By leaving the air flow channel 6, it can be ensured that the air flows smoothly between the heat dissipation belts 5, forming turbulence and enhancing the heat exchange effect.

[0018] When the transformer 9 is running, the internal insulating oil flows into the cooling pipe 4 of the radiator through the oil outlet pipe 8 after being heated. The insulating oil in the cooling pipe 4 exchanges heat with the heat dissipation belt 5 to transfer the heat to the heat dissipation belt 5. At the same time, the external air flows smoothly through the air flow channel 6 between the heat dissipation belts 5, exchanges heat with the heat dissipation belts 5, and takes away the heat on the heat dissipation belts 5. The cooled insulating oil flows back to the inside of the transformer 9 through the return oil pipe 10 and continues to participate in the cooling cycle of the transformer 9. Since the air flow channel 6 is left between the heat dissipation belts 5, the air flow is prevented from forming a boundary layer on the surface of the heat dissipation belt 5, so that the heat exchange between the air and the heat dissipation belt 5 is more sufficient and efficient. This design not only improves the heat dissipation capacity of the radiator, but also ensures the stable operation of the transformer 9.

[0019] The tube-belt radiator combines the efficient thermal conductivity of the cooling tube 4 and the advantage of the increased heat dissipation area of ​​the heat dissipation belt 5, making the heat dissipation effect more significant. An air flow channel 6 is left between the heat dissipation belts 5 to avoid the formation of a boundary layer on the surface of the heat dissipation belt 5, thereby improving the heat exchange efficiency. The tube-belt radiator has a compact structure and occupies a small area, and is suitable for use in landscape underground box-type transformers.

[0020] In order to further improve the heat dissipation capacity of the heat dissipation component, the heat dissipation component also includes a fan 7. There are multiple fans 7, which are arranged at intervals along the horizontal direction of the heat dissipation belt 5. This arrangement can ensure that the air flows evenly between the heat dissipation belts 5 and enhance the heat exchange effect. The fan 7 is arranged at the mounting hole position reserved on the front of the base 3 in a six-point fixing manner. This fixing method is stable and reliable, and can ensure that the fan 7 will not loosen or fall off due to vibration during operation. The fan 7 uses a variable frequency and adjustable speed axial flow fan 7. The axial flow fan 7 has the characteristics of large air volume, low air pressure, high efficiency, etc., and is suitable for forced ventilation of the heat dissipation system. The variable frequency and adjustable speed function enables the fan 7 to be adjusted according to the heat dissipation needs. The speed can be adjusted to achieve energy saving and consumption reduction. In order to realize the automatic opening and closing operation of the fan 7 according to the temperature of the radiator, the heat dissipation component is also equipped with a thermostat. The thermostat uses a 4-20mA signal to control the fan 7, which has the advantages of high precision, fast response, good stability, etc. The number of thermostats is adapted according to the number of fans 7 to ensure that each fan 7 can be independently controlled. In this way, the operating status of each fan 7 can be flexibly adjusted according to the temperature conditions of different areas of the radiator to achieve precise heat dissipation. The power supply of the fan 7 is taken from the AC380V power supply of the power distribution cabinet on the low-voltage side of the transformer 9. This power supply method is convenient and reliable, and can ensure that the fan 7 is available at any time when the transformer 9 is running.

[0021] When the transformer 9 is running, the internal insulating oil is heated and flows into the cooling pipe 4 of the radiator through the oil outlet pipe 8. The insulating oil in the cooling pipe 4 exchanges heat with the heat dissipation belt 5 to transfer heat to the heat dissipation belt 5. At the same time, the thermostat monitors the temperature of the radiator. When the temperature reaches the set value, a control signal is sent to the fan 7. After receiving the control signal, the fan 7 starts to blow air along the horizontal direction of the heat dissipation belt 5 to enhance the heat exchange effect between the heat dissipation belt 5 and the air. When the radiator temperature drops below the set value, the thermostat sends a stop signal, and the fan 7 stops running to achieve energy saving and consumption reduction. The variable frequency and adjustable speed axial flow fan 7 can adjust the speed according to the heat dissipation demand. When the radiator temperature is high, the fan 7 speeds up to enhance the heat dissipation effect; when the radiator temperature is low, the fan 7 speeds down to reduce energy consumption.

[0022] The addition of fan 7 further enhances the heat dissipation capacity of the heat dissipation component and ensures the stable operation of transformer 9. The variable frequency and adjustable speed axial flow fan 7 can adjust the rotation speed according to the heat dissipation demand to achieve energy saving and consumption reduction. The thermostat can automatically control the opening and closing of fan 7 according to the temperature of the radiator, thereby improving the intelligence level of the heat dissipation system. The power supply of fan 7 is taken from the AC380V power supply of the power distribution cabinet on the low-voltage side of transformer 9, which is convenient and reliable, ensuring that fan 7 is available at any time.

[0023] The base 3 is composed of channel steel and square tubes to form a stable frame structure. Both the channel steel and the square tube have good load-bearing capacity and anti-deformation performance, which can ensure that the base 3 remains stable when bearing the weight of components such as the transformer 9 and heat dissipation components. Plate-shaped ventilation windows 2 are arranged around the base 3. These ventilation windows 2 are made of solid materials, which can not only maintain good ventilation inside the base 3, but also effectively prevent the invasion of small animals or debris. The design of the ventilation windows 2 takes into account the multiple needs of rainproof, dustproof and small animal proof, ensuring the cleanliness and safety of the inside of the box transformer.

[0024] The base 3 is the basic supporting structure of the entire landscape buried box-type transformer, and its stability and reliability are of vital importance. The frame structure composed of channel steel and square tube provides sufficient bearing capacity and anti-deformation performance, ensuring the stability of the box-type transformer during long-term use. At the same time, the ventilation windows 2 arranged around not only maintain good ventilation inside the base 3, but also effectively prevent the invasion of small animals and debris, providing a strong guarantee for the normal operation of the box-type transformer. During the heat dissipation process, the fan 7 inhales fresh air from the outside through the ventilation windows 2 and blows it through the heat dissipation belt 5, thereby enhancing the heat exchange effect between the heat dissipation belt 5 and the air. At the same time, the ventilation windows 2 The design also ensures that hot air can be discharged smoothly, avoiding heat accumulation inside the base 3, and further improving the heat dissipation efficiency. The base 3 adopts a frame structure composed of channel steel and square tubes, with strong load-bearing capacity and good anti-deformation performance, ensuring the stable operation of the box transformer. The ventilation windows 2 arranged around it maintain good ventilation inside the base 3, which helps to dissipate heat and prevent heat accumulation. The design of the ventilation windows 2 effectively prevents the intrusion of small animals and debris, and keeps the inside of the box transformer clean and safe. The structural design of the base 3 and the arrangement of the ventilation windows 2 together provide multiple guarantees for the normal operation of the box transformer and improve the reliability and service life of the equipment.

[0025] When in use, use a crane to lift the main body of the box transformer to the installation position and adjust it to a horizontal state. Fix the base 3 to the ground to ensure that the box transformer is stable and does not shake. The fixing method can be expansion bolts or anchor bolts, etc., which are determined according to the specific site conditions. Connect the transformer 9 with the oil outlet pipe 8 and the oil return pipe 10 of the heat dissipation component to ensure that the connection is tight and there is no leakage. Connect the power line of the fan 7 to the AC380V power supply of the low-voltage side distribution cabinet of the transformer 9, and check whether the wiring is correct and firm. Check the connection line between the thermostat and the fan 7 to ensure that the signal The transmission is normal, clean up the debris around the box transformer, ensure that the ventilation window 2 is unobstructed, regularly check the cleanliness of the heat dissipation components, if there is dust or debris, it should be cleaned in time to avoid affecting the heat dissipation effect, regularly check the operation of the fan 7, if there is abnormal noise or vibration, it should be stopped immediately for inspection and troubleshooting, regularly check the setting value and actual measurement value of the thermostat to ensure that the thermostat works normally and can accurately control the opening and closing of the fan 7. In case of thunderstorms or long-term out of use, the power supply of the box transformer should be cut off, and lightning protection and moisture-proof measures should be taken.

[0026] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0027] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0028] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A landscape underground box transformer with an external radiator, comprising a box body buried under the ground, characterized in that: The transformer is arranged inside the box and is used to realize power supply and transformation operations; Landscape boxes are placed on the ground to create a beautiful landscape. The base is arranged on the top of the box body and exposed above the ground surface, and is used to support the landscape box. Plate-shaped ventilation windows are arranged around the base to prevent the intrusion of small animals or debris; The heat dissipation component is arranged inside the base and is connected to the transformer. The insulating oil inside the transformer is cooled by air with the help of directional air flow.

2. The landscape underground box-type transformer with an external radiator according to claim 1 is characterized in that: The heat dissipation assembly includes a radiator and a pipe. The radiator is vertically and fixedly arranged inside the base. There are two pipes, which are arranged on both sides of the radiator and connected to the transformer, serving as channels for the insulating oil to flow between the transformer and the radiator.

3. The landscape underground box-type transformer with an external radiator according to claim 2 is characterized in that: The pipeline is connected to the radiator and the transformer through flanges.

4. The landscape underground box-type transformer with an external radiator according to claim 2 is characterized in that: The pipeline is divided into an oil outlet pipe and an oil return pipe. The height of the pipe opening connecting the oil outlet pipe with the transformer and the radiator is higher than that of the oil return pipe.

5. The landscape underground box-type transformer with an external radiator according to claim 2 is characterized in that: The radiator includes cooling tubes and heat dissipation belts. The cooling tubes are vertically and symmetrically arranged at both ends of the radiator. There are multiple heat dissipation belts, which are horizontally arranged between the cooling tubes and spaced apart along the arrangement direction of the cooling tubes.

6. The landscape underground box-type transformer with an external radiator according to claim 5 is characterized in that: Sufficient air flow channels are left between the heat dissipation belts to prevent the air flow from forming a boundary layer on the surface of the heat dissipation belt.

7. The landscape underground box-type transformer with an external radiator according to claim 2 is characterized in that: The heat dissipation assembly also includes a fan. There are multiple fans, which are arranged at intervals along the horizontal direction of the heat dissipation belt. The fans are arranged at the installation hole positions reserved on the front side of the base in a six-point fixing manner.

8. The landscape underground box-type transformer with an external radiator according to claim 7 is characterized in that: The heat dissipation component also includes a thermostat, which is connected to the fan and is used to control the opening and closing of the fan according to the temperature of the radiator.

9. The landscape underground box-type transformer with an external radiator according to claim 8, characterized in that: The power supply of the fan is taken from the AC380V power supply of the distribution cabinet on the low-voltage side of the transformer.

10. The landscape underground box-type transformer with an external radiator according to claim 7, characterized in that: The fan is a variable frequency and speed-adjustable axial flow fan.

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