An outdoor box-type substation for a photovoltaic power generation device

Abstract

The application relates to the technical field of photovoltaic power generation, and discloses an outdoor box-type substation for a photovoltaic power generation device, which comprises a box body, a top cover and a base, wherein the box body is in a cuboid structure and is provided with an accommodating cavity; a plurality of heat dissipation holes are arranged on four side walls of the box body in a matrix mode to increase the heat dissipation area; and a supporting frame is fixedly connected to the inner wall of the box body; the top cover is fixedly connected to the top of the box body, the top of the top cover is in an arc structure to guide rainwater to slide off, and a protection flange is fixedly connected to the bottom of the top cover; and the base is fixedly connected to the bottom of the box body, a plurality of supporting legs are fixedly connected to the bottom of the base, and the plurality of supporting legs are arranged in a rectangular array. The application can effectively dissipate heat and protect the internal electrical equipment, can keep stable operation in a complex outdoor environment, and is convenient for later maintenance and overhaul.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to an outdoor box-type substation for photovoltaic power generation devices. Background Technology

[0002] Photovoltaic power generation is a renewable energy power generation technology that uses the photovoltaic effect to convert solar energy into electrical energy, and it has developed rapidly in the energy sector in recent years. Photovoltaic power generation devices typically include key equipment such as photovoltaic modules, inverters, and transformers. Among them, the prefabricated substation plays an important role in the voltage transformation and transmission of electrical energy in the photovoltaic power generation system, and is usually set up in an outdoor environment.

[0003] Outdoor prefabricated substations need to withstand complex and ever-changing external environments, including temperature variations, humidity, rain, dust, and ultraviolet radiation. This places high demands on the substation's structural design, heat dissipation performance, protection performance, and operating environment. In practical applications, prefabricated substations need to ensure the normal operating temperature of internal electrical equipment, guarantee reliable operation of equipment under various climatic conditions, and facilitate installation, maintenance, and repair.

[0004] However, existing outdoor prefabricated substations used for photovoltaic power generation devices still have certain limitations in terms of heat dissipation efficiency, protective structure, space utilization, and ease of maintenance during actual use, and need to be further improved and optimized to better meet the application needs of photovoltaic power generation systems. Summary of the Invention

[0005] The purpose of this invention is to provide an outdoor box-type substation for photovoltaic power generation devices, which can effectively dissipate heat and protect the internal electrical equipment, maintain stable operation in complex outdoor environments, and facilitate later maintenance and repair.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An outdoor prefabricated substation for photovoltaic power generation devices includes a box, a top cover, and a base, wherein: The enclosure has a rectangular structure with an accommodating chamber. Multiple heat dissipation holes are provided on the four side walls of the enclosure. The multiple heat dissipation holes are arranged in a matrix to increase the heat dissipation area. A support frame is fixedly connected to the inner wall of the enclosure. The support frame is used to support the internal electrical equipment.

[0007] The top cover is fixedly connected to the top of the box. The top of the top cover has an arc-shaped structure to guide rainwater to slide off. The bottom of the top cover is fixedly connected to a protective flange, and the inner side wall of the protective flange is fitted to the outer wall of the box.

[0008] The base is fixedly connected to the bottom of the box, and multiple legs are fixedly connected to the bottom of the base. The multiple legs are arranged in a rectangular array to support the overall weight.

[0009] Preferably, a dustproof mesh is fixedly connected to the inner wall of the plurality of heat dissipation holes, and the dustproof mesh has a mesh structure to prevent dust from entering the interior of the housing.

[0010] Preferably, a detachable protective plate is fixedly connected to the side wall of the box, the outer wall of the detachable protective plate is flush with the outer wall of the box, and the detachable protective plate is detachably connected to the box by multiple fixing bolts.

[0011] Preferably, the interior of the housing is provided with a heat-conducting plate, which is fixedly connected to one side of the support frame. The heat-conducting plate is made of aluminum alloy to improve heat conduction efficiency.

[0012] Preferably, a dustproof gasket is fixedly connected to the bottom of the top cover. The dustproof gasket is in the form of a ring and is fitted onto the outside of the protective flange. The dustproof gasket is made of rubber to achieve a seal.

[0013] Preferably, a sealing strip is provided between the base and the box body. The sealing strip is fixedly connected between the top of the base and the bottom of the box body, and the sealing strip can prevent rainwater from seeping into the box body from the bottom.

[0014] Preferably, the inner walls of the plurality of heat dissipation holes are fixedly connected with dustproof nets, which have a mesh structure to prevent dust from entering the interior of the housing.

[0015] Preferably, the bottom of each of the legs is fixedly connected with an anti-slip pad, which is made of wear-resistant rubber to increase friction with the ground.

[0016] Preferably, an inspection door is provided on the front side wall of the enclosure, and a waterproof sealing ring is fixedly connected to the edge of the inspection door. The waterproof sealing ring can ensure the sealing performance when the inspection door is closed.

[0017] Preferably, the removable protective plate covers multiple heat dissipation holes, and the waterproof sealing ring is in a ring structure surrounding the edge of the inspection door.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This outdoor prefabricated substation features a matrix arrangement of multiple heat dissipation holes on the side walls of the enclosure, effectively increasing the heat dissipation area and improving the heat dissipation efficiency of the internal electrical equipment. This ensures stable operation of the equipment in high-temperature environments. The top cover adopts an arc-shaped structure design, which guides rainwater to slide down the surface of the top cover, preventing rainwater accumulation and seepage. The combination of protective flanges and dustproof gaskets further enhances the sealing performance, preventing rainwater and dust from entering the enclosure from the top and side walls. The removable protective plate facilitates cleaning and maintenance of the heat dissipation holes. The access door allows maintenance personnel to easily inspect the internal electrical equipment. The waterproof sealing ring ensures the sealing performance of the access door when closed. The overall structural design is reasonable and can effectively solve the limitations of existing technologies in terms of heat dissipation efficiency, protective structure, space utilization, and ease of maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the box structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the top cover structure of the present invention; Figure 4 This is a schematic diagram of the base structure according to an embodiment of this application; Figure 5 This is a schematic diagram of the heat dissipation hole distribution structure of the present invention; Figure 6 This is a schematic diagram of the detachable protective plate structure according to an embodiment of this application; Figure 7 This is a schematic diagram of the inspection door structure of the present invention.

[0020] The components include: 1. Cabinet; 2. Top cover; 3. Base; 4. Support frame; 5. Heat dissipation holes; 6. Protective flange; 7. Support legs; 8. Removable protective plate; 9. Fixing bolts; 10. Heat-conducting plate; 11. Dustproof gasket; 12. Sealing strip; 13. Dustproof net; 14. Anti-slip mat; 15. Inspection door; 16. Waterproof sealing ring; 17. Receiving chamber. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 7This invention provides an outdoor prefabricated substation for photovoltaic (PV) power generation devices. This substation is used in PV power generation systems for housing, cooling, and protecting electrical equipment. This embodiment improves the overall structure of the prefabricated substation, giving it advantages such as efficient heat dissipation, sealed protection, and ease of maintenance. Specifically, taking a PV power generation system as an example, as a preferred solution in this embodiment, this outdoor prefabricated substation can effectively house and protect electrical equipment such as inverters and combiner boxes in the PV power generation device, while adapting to complex and changing outdoor environments and maintaining the stable operation of the internal electrical equipment.

[0023] Please see Figures 1 to 7 The present invention provides a technical solution: an outdoor box-type substation for photovoltaic power generation devices. This substation is mainly used in scenarios where electrical equipment in photovoltaic power generation systems is housed, cooled, and protected.

[0024] Includes a housing 1, a top cover 2, and a base 3, wherein: The enclosure 1 has a rectangular structure and an internal chamber 17. Multiple heat dissipation holes 5 are provided on the four side walls of the enclosure 1. The multiple heat dissipation holes 5 are arranged in a matrix to increase the heat dissipation area. A support frame 4 is fixedly connected to the inner wall of the enclosure 1. The support frame 4 is used to support the internal electrical equipment.

[0025] The top cover 2 is fixedly connected to the top of the box 1. The top of the top cover 2 has an arc-shaped structure to guide rainwater to slide off. The bottom of the top cover 2 is fixedly connected to a protective flange 6. The inner side wall of the protective flange 6 is in contact with the outer wall of the box 1.

[0026] The base 3 is fixedly connected to the bottom of the box 1. Multiple support legs 7 are fixedly connected to the bottom of the base 3. The multiple support legs 7 are arranged in a rectangular array to support the overall weight.

[0027] In this embodiment, the combination of the housing 1, top cover 2, and base 3 effectively houses and protects the internal electrical equipment of the photovoltaic power generation device. The housing 1 adopts a cuboid structure design, making full use of the internal space to accommodate more electrical equipment. Multiple heat dissipation holes 5 on the four side walls of the housing 1 are arranged in a matrix, which effectively increases the heat dissipation area, improves the heat dissipation efficiency of the internal electrical equipment, and ensures stable operation of the equipment in high-temperature environments. The support frame 4 is fixedly connected to the inner wall of the housing 1 to support and fix the internal electrical equipment, maintaining its stable position inside the housing 1 and preventing damage due to vibration or collision.

[0028] The top cover 2 is fixedly connected to the top of the housing 1. Its top adopts an arc-shaped structure design, which can guide rainwater to slide down the surface of the top cover 2 and prevent rainwater from accumulating and seeping into the top of the top cover 2. The inner wall of the protective flange 6 at the bottom of the top cover 2 fits against the outer wall of the housing 1, which can further enhance the sealing performance between the top cover 2 and the housing 1, preventing rainwater and dust from entering the interior of the housing 1 from the top.

[0029] The base 3 is fixedly connected to the bottom of the enclosure 1, and multiple support legs 7 fixedly connected to its bottom are arranged in a rectangular array. This arrangement can evenly distribute the overall weight and enhance the stability of the prefabricated substation. The support legs 7 support the entire enclosure 1, keeping the enclosure 1 at a certain distance from the ground, preventing ground moisture and water vapor from entering the interior of the enclosure 1, and facilitating ventilation and heat dissipation at the bottom.

[0030] In the above embodiments, as a preferred option, a detachable protective plate 8 is fixedly connected to the side wall of the box 1. The outer wall of the detachable protective plate 8 is flush with the outer wall of the box 1. The detachable protective plate 8 is detachably connected to the box 1 by a plurality of fixing bolts 9.

[0031] In this embodiment, the removable protective plate 8 protects and shields the heat dissipation holes 5 on the side wall of the enclosure 1. The removable protective plate 8 is detachably connected to the enclosure 1 via multiple fixing bolts 9. This connection method facilitates cleaning and maintenance of the heat dissipation holes 5. When a large amount of dust adheres to the surface of the heat dissipation holes 5, affecting heat dissipation, the removable protective plate 8 can be removed to clean the holes. After cleaning, the removable protective plate 8 can be reinstalled. The outer wall of the removable protective plate 8 is flush with the outer wall of the enclosure 1. This design makes the overall appearance cleaner and more aesthetically pleasing without affecting the overall structural strength of the enclosure 1.

[0032] In the above embodiments, as a preferred option, a heat-conducting plate 10 is provided inside the housing 1. The heat-conducting plate 10 is fixedly connected to one side of the support frame 4. The heat-conducting plate 10 is made of aluminum alloy to improve heat conduction efficiency.

[0033] In this embodiment, the heat-conducting plate 10 further improves the heat dissipation efficiency of the internal electrical equipment. The heat-conducting plate 10 is fixedly connected to one side of the support frame 4, located between the electrical equipment and the inner wall of the housing 1. When the electrical equipment generates heat during operation, the heat-conducting plate 10 can quickly conduct the heat to the inner wall of the housing 1, and then dissipate the heat to the external environment through the heat dissipation holes 5. The heat-conducting plate 10 is made of aluminum alloy, which has excellent thermal conductivity, enabling rapid heat transfer and improving heat conduction efficiency, thereby ensuring that the electrical equipment operates within a suitable temperature range.

[0034] In the above embodiment, as a preferred solution, a dustproof gasket 11 is fixedly connected to the bottom of the top cover 2. The dustproof gasket 11 is annular and sleeved on the outside of the protective flange 6. The dustproof gasket 11 is made of rubber to achieve a seal.

[0035] In this embodiment, the dustproof gasket 11 further enhances the sealing performance between the top cover 2 and the housing 1. The dustproof gasket 11 has a ring-shaped structure and is fitted onto the outside of the protective flange 6. When the top cover 2 is installed on the top of the housing 1, the dustproof gasket 11 fills the gap between the protective flange 6 and the outer wall of the housing 1, forming an effective seal. The dustproof gasket 11 is made of rubber, which has good elasticity and sealing performance, and can adapt to the sealing requirements under different temperature and humidity environments, preventing rainwater and dust from seeping into the interior of the housing 1 from the connection between the top cover 2 and the housing 1.

[0036] In the above embodiment, as a preferred solution, a sealing strip 12 is provided between the base 3 and the box 1. The sealing strip 12 is fixedly connected between the top of the base 3 and the bottom of the box 1. The sealing strip 12 can prevent rainwater from seeping into the interior of the box 1 from the bottom.

[0037] In this embodiment, the sealing strip 12 prevents rainwater from seeping into the interior of the housing 1 from the bottom. The sealing strip 12 is fixedly connected between the top of the base 3 and the bottom of the housing 1. When the base 3 and housing 1 are connected, the sealing strip 12 fills the gap between them, forming an effective seal. The sealing strip 12 is made of aging-resistant and corrosion-resistant materials, maintaining good sealing performance in long-term outdoor environments, preventing rainwater from seeping into the interior of the housing 1 through the gap between the base 3 and the housing 1, thus protecting the safety of the internal electrical equipment.

[0038] In the above embodiment, as a preferred solution, a dustproof net 13 is fixedly connected to the inner wall of the plurality of heat dissipation holes 5. The dustproof net 13 has a mesh structure that can block dust from entering the interior of the box 1.

[0039] In this embodiment, the dustproof net 13 can prevent dust from entering the housing 1 while ensuring heat dissipation. The dustproof net 13 is fixedly connected to the inner wall of the heat dissipation hole 5 and has a mesh structure. The mesh density of the dustproof net 13 is reasonably designed to ensure air circulation and heat dissipation, while effectively preventing external dust from entering the housing 1 and preventing dust from adhering to the surface of electrical equipment and affecting its normal operation. At the same time, it can also keep the heat dissipation hole 5 unobstructed and ensure heat dissipation.

[0040] In the above embodiment, as a preferred option, the bottom of the plurality of support legs 7 is fixedly connected with anti-slip pads 14, the anti-slip pads 14 being made of wear-resistant rubber to increase friction with the ground.

[0041] In this embodiment, the anti-slip pad 14 enhances the friction between the support leg 7 and the ground, improving the stability of the prefabricated substation. The anti-slip pad 14 is fixedly connected to the bottom of the support leg 7 and is made of wear-resistant rubber. Wear-resistant rubber has a good coefficient of friction and wear resistance, increasing the friction between the support leg 7 and the ground, preventing the prefabricated substation from sliding or shifting due to wind, vibration, or other factors in outdoor environments, thus ensuring the overall structural stability.

[0042] In the above embodiment, as a preferred solution, an inspection door 15 is provided on the front side wall of the housing 1, and a waterproof sealing ring 16 is fixedly connected to the edge of the inspection door 15. The waterproof sealing ring 16 can ensure the sealing performance of the inspection door 15 when it is closed.

[0043] In this embodiment, the access door 15 facilitates maintenance personnel's inspection and maintenance of the electrical equipment inside the enclosure 1. The access door 15 is located on the front wall of the enclosure 1, allowing maintenance personnel to enter the enclosure 1 from the front to inspect, repair, or replace the electrical equipment. A waterproof sealing ring 16 is fixedly connected to the edge of the access door 15. When the access door 15 is closed, the waterproof sealing ring 16 fills the gap between the access door 15 and the enclosure 1, forming an effective seal to prevent rainwater and dust from seeping into the enclosure 1 from the access door 15, ensuring the sealing performance of the access door 15 when closed.

[0044] The working steps of this outdoor prefabricated substation in this invention are as follows: 1. First, the electrical equipment of the photovoltaic power generation device is installed on the support frame 4 inside the box 1. The heat generated by the electrical equipment is conducted to the inner wall of the box 1 through the heat conduction plate 10, and then dissipated to the external environment through multiple heat dissipation holes 5 opened on the side wall of the box 1. The multiple heat dissipation holes 5 are arranged in a matrix to effectively increase the heat dissipation area, improve the heat dissipation efficiency, and ensure that the electrical equipment operates stably at a suitable temperature. 2. Secondly, when it rains, rainwater falls on the top of the top cover 2. Since the top of the top cover 2 has an arc-shaped structure, the rainwater slides down the surface of the top cover 2. The cooperation between the protective flange 6 and the dustproof gasket 11 can prevent rainwater from seeping in from the connection between the top cover 2 and the box 1. The sealing strip 12 can prevent rainwater from seeping into the box 1 from the bottom. The dustproof net 13 can block dust from entering and keep the internal environment of the box 1 clean and dry. 3. Then, when maintenance and repair of the internal electrical equipment are required, maintenance personnel can enter the interior of the enclosure 1 through the inspection door 15. The waterproof sealing ring 16 ensures the sealing performance when the inspection door 15 is closed. When a lot of dust adheres to the surface of the heat dissipation hole 5 and affects the heat dissipation effect, the removable protective plate 8 can be removed to clean the heat dissipation hole 5. After cleaning, the removable protective plate 8 can be reinstalled.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outdoor prefabricated substation for photovoltaic power generation devices, characterized in that: Includes a box body (1), a top cover (2), and a base (3); The box (1) has a rectangular structure and an internal cavity (17). Multiple heat dissipation holes (5) are provided on the four side walls of the box (1). The multiple heat dissipation holes (5) are arranged in a matrix to increase the heat dissipation area. A support frame (4) is fixedly connected to the inner wall of the box (1). The support frame (4) is used to support the internal electrical equipment. The top cover (2) is fixedly connected to the top of the box (1). The top of the top cover (2) has an arc-shaped structure to guide rainwater to slide down. The bottom of the top cover (2) is fixedly connected to a protective flange (6). The inner side wall of the protective flange (6) is in contact with the outer wall of the box (1). The base (3) is fixedly connected to the bottom of the box (1), and multiple legs (7) are fixedly connected to the bottom of the base (3). The multiple legs (7) are arranged in a rectangular array to support the overall weight.

2. An outdoor prefabricated substation for photovoltaic power generation devices according to claim 1, characterized in that: The inner walls of the multiple heat dissipation holes (5) are fixedly connected with dustproof nets (13), which are mesh-like structures to prevent dust from entering the interior of the box (1).

3. The outdoor prefabricated substation according to claim 1, characterized in that: A detachable protective plate (8) is fixedly connected to the side wall of the box (1). The outer wall of the detachable protective plate (8) is flush with the outer wall of the box (1). The detachable protective plate (8) is detachably connected to the box (1) by multiple fixing bolts (9).

4. The outdoor prefabricated substation according to claim 1, characterized in that: The box (1) is equipped with a heat-conducting plate (10) inside. The heat-conducting plate (10) is fixedly connected to one side of the support frame (4). The heat-conducting plate (10) is made of aluminum alloy.

5. The outdoor prefabricated substation according to claim 1, characterized in that: The bottom of the top cover (2) is fixedly connected to a dustproof gasket (11). The dustproof gasket (11) is a ring structure and is sleeved on the outside of the protective flange (6). The material of the dustproof gasket (11) is rubber.

6. The outdoor prefabricated substation according to claim 1, characterized in that: A sealing strip (12) is provided between the base (3) and the box (1), and the sealing strip (12) is fixedly connected between the top of the base (3) and the bottom of the box (1).

7. The outdoor prefabricated substation according to claim 1, characterized in that: The bottom of each of the legs (7) is fixedly connected with an anti-slip pad (14), which is made of wear-resistant rubber.

8. The outdoor prefabricated substation according to claim 1, characterized in that: An inspection door (15) is provided on the front side wall of the box (1), and a waterproof sealing ring (16) is fixedly connected to the edge of the inspection door (15).

9. The outdoor prefabricated substation according to claim 3, characterized in that: The removable protective plate (8) covers multiple of the heat dissipation holes (5).

10. The outdoor prefabricated substation according to claim 8, characterized in that: The waterproof sealing ring (16) is in a ring structure surrounding the edge of the inspection door (15).

Images