Outdoor prepackaged substation with high-efficiency heat dissipation enclosure

Abstract

This invention discloses an outdoor prefabricated substation with a high-efficiency heat dissipation shell, specifically relating to the field of prefabricated substation technology. It includes a device body, a top cover, and a flow guiding assembly. The top cover consists of an inner protective plate and an outer protective plate, forming a first air duct between them. A throat is provided in the middle of the first air duct. The flow guiding assembly includes a first flow guiding component and a second flow guiding component disposed inside the device body, forming a second air duct between them. When the device body is ventilated and cooled, the first flow guiding component can guide airflow, allowing some air to enter the second air duct. The flow guiding assembly divides the device body into multiple chambers, and the assembly can adjust the connectivity of these chambers. This invention increases the airflow velocity inside the first air duct, cooling the top cover while removing hot air from the top of the device body, thus preventing heat accumulation in the top cover area and preventing it from becoming a heat source.

Description

Technical Field

[0001] This invention relates to the field of prefabricated substation technology, and more specifically, to an outdoor prefabricated substation with a high-efficiency heat dissipation shell. Background Technology

[0002] In modern power grid construction, due to increasingly scarce urban land and extremely high requirements for construction efficiency, traditional brick-and-mortar substations, which have long construction cycles and large land occupation, are gradually being replaced by highly integrated outdoor prefabricated substations. These devices achieve rapid deployment and miniaturization of power facilities by pre-assembling high-voltage switches, transformers, and low-voltage distribution systems within a metal or non-metal enclosure.

[0003] However, in existing technologies, the equipment layout inside prefabricated substation enclosures is compact, and the arrangement of transformer windings and high and low voltage busbars is complex. Traditional heat dissipation structures often adopt a "bottom air intake, top air exhaust" approach, which causes cold air to take a "short-circuit" path and be directly exhausted from the air outlet. As a result, key heat-generating areas such as the depth of the transformer heat sink and the inverter backplate cannot form an effective airflow coverage, resulting in a severe "local heat island" effect.

[0004] Furthermore, the top cover of the prefabricated substation is directly affected by solar radiation, and it absorbs heat severely in summer. As the temperature of the gas inside the substation box rises, its density decreases and it rises, causing heat to accumulate in the top cover area, which in turn becomes a heat source inside the box. This accelerates the aging of local insulation of the equipment and significantly shortens the equipment's lifespan. Therefore, this invention proposes an outdoor prefabricated substation with a high-efficiency heat dissipation shell to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide an outdoor prefabricated substation with a high-efficiency heat dissipation shell to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an outdoor prefabricated substation with a high-efficiency heat dissipation shell, comprising: an equipment body, a top cover, and a flow guiding assembly; the top cover is composed of an inner protective plate and an outer protective plate, forming a first air duct between the inner and outer protective plates, and a throat is provided in the middle of the first air duct; the flow guiding assembly includes a first flow guiding component and a second flow guiding component disposed inside the equipment body, forming a second air duct between the first and second flow guiding components; when the equipment body is ventilated and dissipated, the first flow guiding component can guide the air to allow some air to enter the interior of the second air duct; the flow guiding assembly divides the equipment body into multiple chambers, and the flow guiding assembly can adjust the communication state of the multiple chambers.

[0007] Preferably, the inner protective plate has multiple through holes inside, which are connected to the throat of the first air duct. A baffle is provided in the middle of the first air duct, which divides the first air duct into two flow channels with opposite airflow directions inside the two flow channels.

[0008] Preferably, there are at least two flow guiding components symmetrically arranged along the mid-section of the device body. The two second flow guiding components form a first chamber, and the two first flow guiding components respectively form a second chamber with the side wall of the device body. The second air duct is disposed between the first chamber and the second chamber, and the plurality of through holes are connected to the first chamber.

[0009] Preferably, the device body is rotatably connected to a first adjusting member, which can change the communication state between the first chamber and the second chamber by rotation. The bottom of the device body is provided with a third air duct, and the first adjusting member can adjust the communication state between the third air duct and the first chamber and the second chamber.

[0010] Preferably, a first ventilation opening and a second ventilation opening are respectively provided on both sides of the device body, the first ventilation opening is connected to the second chamber, and the second ventilation opening is connected to the third air duct.

[0011] Preferably, a second adjusting member is rotatably connected to one end of the first guide member near the first vent, and the second adjusting member can adjust the ventilation volume of the second air duct by rotating.

[0012] Preferably, a first rotating shaft is fixedly connected to the middle of the first adjusting member, a first motor is fixedly connected to the side wall of the device body, the output end of the first motor is fixedly connected to the first rotating shaft, and a first support member for supporting the first rotating shaft is fixedly connected to the end of the device body away from the first rotating shaft, and the first support member is rotatably connected to the first rotating shaft.

[0013] Preferably, a second rotating shaft is fixedly connected to the middle of the second adjusting member, a second motor is fixedly connected to the side wall of the device body, the output end of the second motor is fixedly connected to the second rotating shaft, and a second support member for supporting the second rotating shaft is fixedly connected to the end of the device body away from the second rotating shaft, and the second support member is rotatably connected to the second rotating shaft.

[0014] Preferably, a first fan group is provided at the first ventilation opening on both sides of the device body. The first fan group can draw outside air into the device body. A second fan group is provided on both sides of the top cover. The two second fan groups are respectively located in two flow channels and have opposite air directions.

[0015] Preferably, temperature sensors are installed inside both the first chamber and the second chamber, and a controller is installed inside the device body. The controller is electrically connected to the temperature sensors and to the first motor and the second motor.

[0016] The technical effects and advantages of this invention are as follows:

[0017] This invention cools the top cover by increasing the airflow velocity inside the first air duct. Simultaneously, it utilizes negative pressure at the throat to further increase the airflow velocity inside the device body, carrying away hot air from the top of the device. This solves the problem of heat accumulation in the top cover area due to heat absorption from solar radiation and the rising of hot gas inside the casing, thus preventing it from becoming a heat source. Furthermore, the invention uses a first guide and a first regulating component to guide the gas flow, adjusting the gas flow according to the temperatures inside the first and second chambers to prevent localized heat buildup and the resulting severe localized heat island effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the wind direction when the temperature of the first chamber of the present invention is high.

[0021] Figure 4 This is a schematic diagram of the wind direction of the first air duct in this invention.

[0022] Figure 5 This is a schematic diagram of the wind direction when the temperature in the second chamber of the present invention is high.

[0023] Figure 6 This is a schematic diagram of the structure of the first flow guide of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the first adjusting member of the present invention.

[0025] The attached figures are labeled as follows: 1. Equipment body; 11. First chamber; 12. Second chamber; 13. Third air duct; 2. Top cover; 21. Inner protective plate; 211. Through hole; 22. Outer protective plate; 23. First air duct; 231. Throat; 24. Baffle; 3. Flow guiding assembly; 31. First flow guiding component; 311. Second adjusting component; 312. Second motor; 313. Second support component; 32. Second flow guiding component; 33. Second air duct; 34. First adjusting component; 341. First motor; 342. First support component. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] In actual use, as the gas inside the substation box increases in temperature and its density decreases, heat accumulates in the top area, which in turn becomes a heat source inside the box. This embodiment is invented to solve the above problem.

[0029] Please see Figures 1 to 7 As shown, an outdoor prefabricated substation with a high-efficiency heat dissipation shell according to an embodiment of the present invention includes a device body 1, a top cover 2, and a flow guiding assembly 3. The top cover 2 is composed of an inner protective plate 21 and an outer protective plate 22, and a first air duct 23 is formed between the inner protective plate 21 and the outer protective plate 22. A throat 231 is provided in the middle of the first air duct 23. The flow guiding assembly 3 includes a first flow guiding component 31 and a second flow guiding component 32 disposed inside the device body 1. A second air duct 33 is formed between the first flow guiding component 31 and the second flow guiding component 32. When the device body 1 is ventilated and dissipated, the first flow guiding component 31 can guide the air to allow some air to enter the interior of the second air duct 33. The flow guiding assembly 3 divides the device body 1 into multiple chambers. The flow guiding assembly 3 can adjust the connection state of the multiple chambers. A high-voltage switchgear, a low-voltage switchgear, and a transformer are disposed inside the device body 1.

[0030] Please see Figure 3 and Figure 4 As shown, the inner protective plate 21 has multiple through holes 211 inside, which are connected to the throat 231 of the first air duct 23. A baffle 24 is provided in the middle of the first air duct 23, which divides the first air duct 23 into two flow channels with opposite air flow directions.

[0031] Please see Figure 2 and Figure 3 As shown, there are at least two flow guiding components 3, which are symmetrically arranged along the mid-section of the equipment body 1. Two second flow guiding components 32 form a first chamber 11, and two first flow guiding components 31 respectively form a second chamber 12 with the side wall of the equipment body 1. A second air duct 33 is arranged between the first chamber 11 and the second chamber 12. Multiple through holes 211 are connected to the first chamber 11. The transformer is installed inside the first chamber 11, and the low-voltage switchgear and the high-voltage switchgear are respectively installed inside the two second chambers 12.

[0032] Please see Figure 3 and Figure 5 As shown, the device body 1 is rotatably connected to a first adjusting member 34. The first adjusting member 34 can change the communication state between the first chamber 11 and the second chamber 12 by rotating. A third air duct 13 is provided at the bottom of the device body 1. The first adjusting member 34 can adjust the communication state between the third air duct 13 and the first chamber 11 and the second chamber 12.

[0033] Please see Figure 3 and Figure 5 As shown, a first ventilation opening and a second ventilation opening are respectively provided on both sides of the equipment body 1. The first ventilation opening is connected to the second chamber 12, and the second ventilation opening is connected to the third air duct 13. Figure 7 As shown, the first guide member 31 is rotatably connected to a second adjusting member 311 at one end near the first vent. The second adjusting member 311 can adjust the ventilation volume of the second air duct 33 by rotating.

[0034] Please see Figure 7 As shown, a first rotating shaft is fixedly connected to the middle of the first adjusting member 34, a first motor 341 is fixedly connected to the side wall of the device body 1, the output end of the first motor 341 is fixedly connected to the first rotating shaft, and a first support member 342 for supporting the first rotating shaft is fixedly connected to the end of the device body 1 away from the first rotating shaft. The first support member 342 is rotatably connected to the first rotating shaft.

[0035] Please see Figure 6 As shown, a second rotating shaft is fixedly connected to the middle of the second adjusting member 311, a second motor 312 is fixedly connected to the side wall of the device body 1, the output end of the second motor 312 is fixedly connected to the second rotating shaft, and a second support member 313 for supporting the second rotating shaft is fixedly connected to the end of the device body 1 away from the second rotating shaft, and the second support member 313 is rotatably connected to the second rotating shaft.

[0036] Please see Figure 1 and Figure 2 As shown, a first fan group is provided at the first ventilation opening on both sides of the device body 1. The first fan group can draw outside air into the device body 1. A second fan group is provided on both sides of the top cover 2. The two second fan groups are respectively located in two flow channels and have opposite air directions. Temperature sensors are provided in both the first chamber 11 and the second chamber 12. A controller is provided inside the device body 1. The controller is electrically connected to the temperature sensor, the first motor 341, the second motor 312, and the first fan group and the second fan group. The installation method of the controller, temperature sensor, first fan group, and second fan group is the prior art. The fixing method of the first motor 341 and the second motor 312 to the side wall of the device body 1 is the prior art.

[0037] During use, when any temperature sensor inside the device body 1 detects a temperature exceeding a threshold, the controller activates the second fan groups on both sides of the top cover 2. These second fans blow air into the first air duct 23, allowing cool air from outside the device body 1 to enter the first air duct 23, increasing the airflow speed and cooling the top cover 2. When the airflow reaches the throat 231 within the first air duct 23, the airflow area decreases, and the airflow speed increases. According to the Venturi effect, a negative pressure is generated at the throat 231, causing air inside the device body 1 to enter the first air duct 23 through the through-hole 211. This, in turn, allows cool air from outside to enter the device body 1 through the first and second ventilation openings. Inside, as the gas density decreases and rises due to the increased temperature, a large amount of hot air inside the device body 1 is discharged from the throat 231. By setting the second fan group on both sides of the top cover 2, the air flow direction inside the two channels of the first air duct 23 is reversed, preventing the hot air entering the throat 231 through the through hole 211 from accumulating on one side of the top cover 2. By increasing the air flow speed inside the first air duct 23, the top cover 2 is cooled down. At the same time, the negative pressure at the throat 231 increases the flow speed inside the device body 1 and carries away the hot air at the top of the device body 1. This solves the problem of heat accumulation in the area of ​​the top cover 2 due to the heat absorption of the top cover 2 by solar radiation and the rise of hot gas inside the box, which makes it a heat source.

[0038] Example 2

[0039] In practical use, it was found that in traditional heat dissipation structures, cold air takes a "short-circuit" path and is directly discharged from the air outlet. Key heat-generating areas such as the depth of the transformer heat sink and the inverter backplate cannot form an effective airflow coverage, resulting in a serious "local heat island" effect. Further improvements were made based on the above embodiments.

[0040] Based on the above embodiments, during use, when any temperature sensor inside the device body 1 detects a temperature exceeding a threshold, the controller activates the second fan group and simultaneously activates the first fan group. This draws external cold air into the device body 1 and exhausts it through the first air duct 23. When external air enters the device body 1, some air is guided by the first guide element 31 through the second air duct 33 and directly enters the first chamber 11 for heat dissipation. The remaining air enters the second chamber 12 for heat dissipation, and after being guided by the first guide element 31 and the first regulating element 34, it enters the first chamber 11 and is exhausted. Simultaneously, due to the negative pressure at the throat 231, external cold air enters the first chamber 11 through the third air duct 13 and is guided by the first regulating element 34 for heat dissipation. If the temperature sensor inside the first chamber 11 detects a temperature exceeding a threshold, the controller activates the second motor 312, causing the second motor 312 to rotate the second shaft, thereby rotating the second regulating element 311. This increases the flow area at the inlet of the second air duct 33, thus... More air from outside the device body 1 enters the first chamber 11 directly through the second air duct 33 to cool it. If the temperature sensor inside any of the second chambers 12 detects a temperature greater than a threshold, the controller starts the first motor 341 corresponding to that chamber, causing the first motor 341 to drive the first adjusting member 34 to rotate. This causes the first adjusting member 34 to isolate the second chamber 12 with a temperature greater than the threshold from the first chamber 11 through the first guide member 31. At this time, the second chamber 12 is connected to the corresponding third air duct 13. When the external air... After the gas is drawn into the second chamber 12 by the first fan assembly, it is guided by the first guide member 31 and the first regulating member 34 and then discharged into the equipment body 1 through the third air duct 13. This prevents the gas temperature from rising and entering the first chamber 11 during the cooling process of the second chamber 12, thus affecting the subsequent cooling effect. The gas is guided by the first guide member 31 and the first regulating member 34, and the gas flow is adjusted according to the internal temperature of the first chamber 11 and the second chamber 12, thereby preventing the local accumulation of heat in the equipment body 1 and the generation of a severe local heat island effect.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An outdoor prepackaged substation with high-efficiency heat dissipation enclosure, comprising a device body, characterized in that, Also includes: The top cover is composed of an inner protective plate and an outer protective plate, and a first air duct is formed between the inner protective plate and the outer protective plate. A throat is provided in the middle of the first air duct. The airflow guiding component includes a first airflow guiding component and a second airflow guiding component disposed inside the device body. A second air duct is formed between the first airflow guiding component and the second airflow guiding component. When the device body is ventilated and cooled, the first airflow guiding component can guide the airflow so that some air enters the interior of the second air duct. The flow guiding component divides the device body into multiple chambers, and the flow guiding component can adjust the communication state of the multiple chambers.

2. The outdoor prepackaged electrical substation with high efficient heat dissipation enclosure of claim 1, wherein: The inner protective plate has multiple through holes inside, which are connected to the throat of the first air duct. A baffle is provided in the middle of the first air duct, which divides the first air duct into two flow channels with opposite airflow directions inside the two flow channels.

3. The outdoor prepackaged electrical substation with high efficient heat dissipation enclosure of claim 1, wherein: The flow guiding components are at least two and are symmetrically arranged along the mid-section of the device body. The two second flow guiding components form a first chamber, and the two first flow guiding components and the side wall of the device body respectively form a second chamber. The second air duct is disposed between the first chamber and the second chamber, and the plurality of through holes are connected to the first chamber.

4. The outdoor prepackaged electrical substation with high efficiency heat dissipation enclosure of claim 3, wherein: The device body is internally rotatably connected to a first adjusting member, which can change the communication state between the first chamber and the second chamber by rotation. The bottom of the device body is provided with a third air duct, and the first adjusting member can adjust the communication state between the third air duct and the first chamber and the second chamber.

5. The outdoor prefabricated substation with a high-efficiency heat dissipation shell according to claim 4, characterized in that: The device body has a first ventilation opening and a second ventilation opening on both sides, the first ventilation opening is connected to the second chamber, and the second ventilation opening is connected to the third air duct.

6. The outdoor prepackaged electrical substation with high efficiency heat dissipation enclosure of claim 5, wherein: The first air guide is rotatably connected to a second adjusting member at one end near the first air vent. The second adjusting member can adjust the ventilation volume of the second air duct by rotating.

7. The outdoor prepackaged electrical substation with high- efficiency heat dissipation enclosure of claim 6, wherein: A first rotating shaft is fixedly connected to the middle of the first adjusting member, a first motor is fixedly connected to the side wall of the device body, the output end of the first motor is fixedly connected to the first rotating shaft, and a first support member for supporting the first rotating shaft is fixedly connected to the end of the device body away from the first rotating shaft, and the first support member is rotatably connected to the first rotating shaft.

8. The outdoor prepackaged electrical substation with high efficiency heat dissipation enclosure of claim 7, wherein: A second rotating shaft is fixedly connected to the middle of the second adjusting member, a second motor is fixedly connected to the side wall of the equipment body, the output end of the second motor is fixedly connected to the second rotating shaft, and a second support member for supporting the second rotating shaft is fixedly connected to the end of the equipment body away from the second rotating shaft, and the second support member is rotatably connected to the second rotating shaft.

9. The outdoor prepackaged electrical substation with high- efficiency heat dissipation enclosure of claim 8, wherein: A first fan group is provided at the first ventilation opening on both sides of the device body. The first fan group can draw outside air into the device body. A second fan group is provided on both sides of the top cover. The two second fan groups are respectively located in two flow channels and have opposite air directions.

10. The outdoor prepackaged electrical substation with high- efficiency heat dissipation enclosure of claim 9, wherein: Temperature sensors are installed inside both the first and second chambers. A controller is installed inside the main body of the device. The controller is electrically connected to the temperature sensors and to the first and second motors.

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