A photovoltaic modular box transformer

Abstract

The utility model discloses a photovoltaic modular box transformer, including the box, one end fixedly connected with the box door no.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic transformer substation technology, and in particular to a photovoltaic modular transformer substation. Background Technology

[0002] As a key device connecting photovoltaic arrays and the power grid, photovoltaic box-type substations integrate transformers, photovoltaic inverters and other equipment into a closed box, which has the advantages of compact structure, small footprint and easy on-site quick installation.

[0003] A search revealed Chinese patent CN216487551U, which discloses a box-type transformer, including a box body with multiple side walls that are connected in a ring. This device not only has power distribution function but also power generation function, enabling integrated centralized management of photovoltaic and energy storage systems and reducing operating costs.

[0004] However, the device still has the following problems. By integrating photovoltaic panels, photovoltaic inverters, and transformers, the device not only has power distribution functions but also power generation functions, realizing the integration of photovoltaic and energy storage systems. However, in actual use, the device integrates many components and lacks corresponding heat dissipation components, making it difficult to effectively improve the heat dissipation efficiency of the device and inevitably affecting the working efficiency of the device. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a modular photovoltaic transformer substation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A photovoltaic modular transformer includes a box body, one end of which is fixedly connected to a box door, and the other end of which is fixedly connected to a box door. It also includes a heat dissipation module disposed on the outer wall of the box door, and a transformer module disposed inside the box body.

[0007] The heat dissipation module includes an exhaust pipe fixedly connected to one side of the outer wall of the second door. An air pump is fixedly connected to the outer wall of the second door near the exhaust pipe, with one end of the air pump fixedly connected to one end of the exhaust pipe. A filter box is fixedly connected to the outer wall of the second door near the air pump, with one end of the filter box fixedly connected to the other end of the air pump. A heat exchange box is fixedly connected to the outer wall of the second door near the filter box. One end of the heat exchange box is fixedly connected to a connecting pipe, with one end of the connecting pipe fixedly connected to the other end of the filter box. The other end of the heat exchange box is fixedly connected to a set of evenly distributed return pipes, with one end of each return pipe fixedly connected to the outer wall of the second door. The air pump actively extracts the high-temperature air from the box, which is then filtered and cooled by heat exchange before being returned to the box through the return pipes, forming a forced circulation. The heat dissipation efficiency is far higher than that of traditional natural ventilation or simple exhaust.

[0008] The inner wall of the filter box is fixedly connected to two sets of staggered partitions on both sides. The space between the inner wall of the filter box and the partitions is filled with an adsorbent material. The outer wall of the first door of the box is provided with two sets of evenly distributed heat dissipation vents.

[0009] Preferably, a compressor is fixedly connected to the outer wall of the second door near the filter box, and an evaporator is fixedly connected to one side of the inner wall of the heat exchange box.

[0010] Preferably, a condenser is fixedly connected to the outer wall of the second door away from the heat exchange box, and a set of throttling units is fixedly connected to one end of the condenser, and one end of each throttling unit is fixedly connected to one end of the evaporator.

[0011] Preferably, one end of the compressor is fixedly connected to a second connecting pipe, and one end of the second connecting pipe is fixedly connected to the other end of the evaporator.

[0012] Preferably, the other end of the compressor is fixedly connected to a connecting pipe three, and one end of the connecting pipe three is fixedly connected to the other end of the condenser.

[0013] Preferably, the transformer module includes a transformer installed on one side of the bottom of the enclosure, and a photovoltaic inverter installed on the other side of the bottom of the enclosure. Through the cooperation between the transformer and the photovoltaic inverter, the low-voltage DC power generated by the photovoltaic panel is converted into high-voltage AC power.

[0014] The beneficial effects of this utility model are as follows: By cooperating with the air pump and the air extraction pipe, the hot and humid air inside the chamber is extracted into the filter chamber. Then, through the connecting pipe, the dry airflow in the filter chamber is transported to the heat exchange chamber. The heat exchange chamber absorbs the heat of the dry and hot airflow. Then, through the setting of the return pipe, the low-temperature dry airflow is facilitated to return to the chamber, which effectively improves the heat dissipation efficiency of the device. By using staggered baffles inside the filter box, the path length of the hot and humid airflow is extended within the filter box. Then, the moisture in the hot and humid airflow is absorbed by the adsorption filler, reducing the moisture content inside the box and preventing the transformer module from being in a humid environment. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of a photovoltaic modular transformer substation proposed in this utility model; Figure 2 This is a second-view three-dimensional structural diagram of a photovoltaic modular transformer substation proposed in this utility model; Figure 3 This is a schematic diagram of a partial cross-sectional three-dimensional structure of a photovoltaic modular transformer substation proposed in this utility model; Figure 4 This is a half-section three-dimensional structural diagram of a partial heat dissipation module of a photovoltaic modular transformer substation proposed in this utility model.

[0016] In the diagram: 1. Cabinet; 2. Cabinet door one; 3. Cabinet door two; 4. Transformer; 5. Photovoltaic inverter; 6. Heat dissipation vent; 7. Exhaust pipe; 8. Air pump; 9. Filter box; 10. Partition plate; 11. Adsorbent filler; 12. Heat exchange box; 13. Connecting pipe one; 14. Return pipe; 15. Compressor; 16. Evaporator; 17. Condenser; 18. Throttling unit; 19. Connecting pipe two; 20. Connecting pipe three. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1, referring to Figure 1-4 A photovoltaic modular transformer substation includes a housing 1. One end of the housing 1 is fixedly connected to a door 2 by bolts, and the other end of the housing 1 is fixedly connected to a door 3 by welding. The housing 1, door 2, and door 3 are all made of high-strength insulating alloy material, which improves the overall structural strength and safety of the device. The outer wall of door 2 has two sets of evenly distributed heat dissipation vents 6. The substation also includes a heat dissipation module disposed on the outer wall of door 3. A transformer module is disposed inside the housing 1.

[0019] like Figures 2-4As shown, in one embodiment, to improve the heat dissipation efficiency of the device, the heat dissipation module includes an exhaust pipe 7 fixedly connected to one side of the outer wall of the second door 3. An air pump 8 is fixedly connected to the outer wall of the second door 3 near the exhaust pipe 7, and one end of the air pump 8 is fixedly connected to one end of the exhaust pipe 7. Through the cooperation between the air pump 8 and the exhaust pipe 7, hot air inside the box 1 is extracted to the outside of the box 1. A filter box 9 is fixedly connected to the outer wall of the second door 3 near the air pump 8, and one end of the filter box 9 is fixedly connected to the other end of the air pump 8. Two sets of staggered partitions 10 are fixedly connected to both sides of the inner wall of the filter box 9. The partitions 10 increase the path of the hot air extracted from the box 1 through the inside of the filter box 9. The filter box 9 is filled with an adsorbent filler 11 between its inner wall and the partition 10. The adsorbent filler 11 is made of activated carbon material, which absorbs moisture from the hot air inside the box 1. A heat exchange box 12 is fixedly connected to the outer wall of the second door 3 near the filter box 9. The heat exchange box 12 reduces the airflow temperature. One end of the heat exchange box 12 is fixedly connected to a connecting pipe 13, and one end of the connecting pipe 13 is fixedly connected to the other end of the filter box 9. The other end of the heat exchange box 12 is fixedly connected to a set of evenly distributed return pipes 14, and one end of each return pipe 14 is fixedly connected to the outer wall of the second door 3. The return pipes 14 facilitate the return of low-temperature dry airflow to the inside of the box 1.

[0020] like Figure 2 and Figure 4 As shown, in one embodiment, a compressor 15 is fixedly connected to the outer wall of the second door 3 near the filter box 9. The compressor 15 is used to compress the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas. An evaporator 16 is fixedly connected to one side of the inner wall of the heat exchange box 12. The evaporator 16 absorbs heat from the surrounding air. A condenser 17 is fixedly connected to the outer wall of the second door 3 away from the heat exchange box 12. The condenser 17 dissipates heat, thereby converting the high-temperature, high-pressure refrigerant gas into a medium-temperature, medium-pressure liquid. One end of the condenser 17 is fixedly connected to a set of throttling units 18, and one end of each throttling unit 18 is fixedly connected to one end of the evaporator 16. The throttling units 18 rapidly reduce the pressure of the liquid refrigerant. One end of the compressor 15 is fixedly connected to a connecting pipe 19, and one end of the connecting pipe 19 is fixedly connected to the other end of the evaporator 16. The other end of the compressor 15 is fixedly connected to a connecting pipe 20, and one end of the connecting pipe 20 is fixedly connected to the other end of the condenser 17. like Figure 3As shown, in one embodiment, the transformer module includes a transformer 4 installed on one side of the bottom of the housing 1, wherein the transformer 4 serves to convert low-voltage AC power into high-voltage AC power. A photovoltaic inverter 5 is installed on the other side of the bottom of the housing 1, wherein the photovoltaic inverter 5 serves to convert the DC power generated by the photovoltaic panel into AC power.

[0021] Working principle: During use, the photovoltaic module converts the low-voltage AC power generated by the photovoltaic panel into high-voltage AC power, which is then transmitted to the power grid. Simultaneously, the air pump 8 and the extraction pipe 7 work together to extract the humid and hot air inside the housing 1 into the filter box 9. Then, the partition 10 and the adsorption filler 11 inside the filter box 9 work together to absorb the moisture in the airflow. The dry airflow is then delivered to the heat exchange box 12 through the connecting pipe 13. The compressor 15 works together with the condenser 17, the throttling unit 18, and the evaporator 16 to absorb the heat from the dry hot airflow in the heat exchange box 12. Finally, the return pipe 14 facilitates the return of the low-temperature dry airflow to the housing 1, effectively improving the heat dissipation efficiency of the device.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic modular transformer substation, comprising a box body (1), wherein a box door (2) is fixedly connected to one end of the box body (1), and a box door (3) is fixedly connected to the other end of the box body (1), characterized in that, It also includes a heat dissipation module installed on the outer wall of the second (3) door, and a transformer module is installed inside the box (1); The heat dissipation module includes an exhaust pipe (7) fixedly connected to one side of the outer wall of the second door (3). An air pump (8) is fixedly connected to the outer wall of the second door (3) near the exhaust pipe (7), and one end of the air pump (8) is fixedly connected to one end of the exhaust pipe (7). A filter box (9) is fixedly connected to the outer wall of the second door (3) near the air pump (8), and one end of the filter box (9) is fixedly connected to the other end of the air pump (8). A heat exchange box (12) is fixedly connected to the outer wall of the second door (3) near the filter box (9). One end of the heat exchange box (12) is fixedly connected to a connecting pipe (13), and one end of the connecting pipe (13) is fixedly connected to the other end of the filter box (9). The other end of the heat exchange box (12) is fixedly connected to a set of evenly distributed return pipes (14), and one end of each return pipe (14) is fixedly connected to the outer wall of the second door (3). The filter box (9) has two sets of staggered partitions (10) fixedly connected to the inner wall on both sides. The inner wall of the filter box (9) and the partitions (10) are filled with adsorbent filler (11). The outer wall of the box door (2) has two sets of evenly distributed heat dissipation vents (6).

2. The photovoltaic modular transformer substation according to claim 1, characterized in that, A compressor (15) is fixedly connected to the outer wall of the second door (3) near the filter box (9), and an evaporator (16) is fixedly connected to one side of the inner wall of the heat exchange box (12).

3. A photovoltaic modular transformer substation according to claim 2, characterized in that, A condenser (17) is fixedly connected to the outer wall of the second door (3) away from the heat exchange box (12). One end of the condenser (17) is fixedly connected to a set of throttling units (18), and one end of each throttling unit (18) is fixedly connected to one end of the evaporator (16).

4. A photovoltaic modular transformer substation according to claim 3, characterized in that, One end of the compressor (15) is fixedly connected to a connecting pipe two (19), and one end of the connecting pipe two (19) is fixedly connected to the other end of the evaporator (16).

5. A photovoltaic modular transformer substation according to claim 4, characterized in that, The compressor (15) is fixedly connected to a connecting pipe three (20) at the other end, and one end of the connecting pipe three (20) is fixedly connected to the other end of the condenser (17).

6. A photovoltaic modular transformer substation according to claim 5, characterized in that, The transformer module includes a transformer (4) installed on one side of the bottom of the enclosure (1), and a photovoltaic inverter (5) installed on the other side of the bottom of the enclosure (1).

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