Closed transformer substation for power supply of urban power grid

Abstract

The invention discloses a closed transformer substation for urban power grid power supply, and relates to the technical field of transformer substations. Comprising a closed transformer substation box body, a partition plate fixedly connected in the closed transformer substation box body, a transformer mounted in the closed transformer substation box body, a high-voltage power distribution cabinet, a low-voltage power distribution cabinet, side plates fixedly connected to two sides of the closed transformer substation box body, and a top plate fixedly connected in the closed transformer substation box body, the filter screen plate and the sealing heat-conducting plate are detachably embedded in the surface of the side plate; and the radiating fins are fixedly connected to the surface of the sealing heat-conducting plate. When the closed transformer substation for urban power grid power supply is used, the adjusting mechanism enables equipment maintenance operation to be simple and convenient, and dust and small animals can be blocked when the closed transformer substation is closed; the photovoltaic module utilizes solar energy, so that the operation cost is reduced, and heat transfer is reduced; the driving assembly is matched with the heat dissipation assembly, efficient heat dissipation can be achieved, stable operation of equipment is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of substations, and particularly to an enclosed substation for power supply of urban power grids. Background Art

[0002] An enclosed substation is a substation in which electrical equipment such as high-voltage switchgear and transformers are enclosed in a metal shell. It has the advantages of small floor area, high reliability, good safety, low noise, and beautiful appearance, and is widely used in urban power grids, industrial enterprises and other places. However, there are many drawbacks in the existing enclosed substations. First of all, there is the problem of heat dissipation. The box doors of traditional enclosed substations are usually in a closed state, that is, the substation is in a sealed state, and the air inside the box cannot be exchanged with the outside world, resulting in low heat dissipation efficiency of the substation. It is difficult to meet the heat dissipation requirements during high-load operation of the equipment. For example, during the peak electricity consumption in summer, the equipment generates a large amount of heat, and the internal temperature rises sharply, which not only reduces the equipment performance and shortens the service life, but also may cause failures and threaten the stability of power supply. Secondly, the protection performance is not good. External dust and small animals are easy to enter the interior of the substation. A large amount of dust entering the substation is likely to cause short circuits, and the behavior of small animals biting wires will also cause power failures. Moreover, the energy utilization efficiency is low. It mainly relies on mains power supply, with high operating costs, and does not make full use of renewable energy, which does not conform to the current concept of green development. Finally, the existing design of the substation box door is not conducive to equipment maintenance, with cumbersome operations, increasing the maintenance difficulty and power outage time, bringing certain adverse effects to the use process. In order to solve the deficiencies of the existing technology, we propose an enclosed substation for power supply of urban power grids. Summary of the Invention

[0003] The main purpose of the present invention is to provide an enclosed substation for power supply of urban power grids, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] An enclosed substation for power supply of urban power grids, comprising an enclosed substation box body, a partition fixedly connected inside the enclosed substation box body, a transformer, a high-voltage switchgear cabinet and a low-voltage switchgear cabinet installed inside the enclosed substation box body, side plates fixedly connected to both sides of the enclosed substation box body, a top plate fixedly connected inside the enclosed substation box body, a filter screen plate and a sealed heat-conducting plate detachably embedded on the surface of the side plates, and heat dissipation fins fixedly connected to the surface of the sealed heat-conducting plate. Two groups of adjusting mechanisms are symmetrically arranged at both front and rear ends of the enclosed substation box body. A photovoltaic module is arranged on the top of the enclosed substation box body. A driving component is arranged at the upper end of the top plate, and two groups of heat dissipation components are symmetrically arranged at the upper end of the top plate;

[0006] The adjusting mechanism includes a limiting component and an adjusting component fixedly connected to the front and rear ends of the enclosed substation box body.

[0007] Preferably, the limiting component includes fixed door panels fixedly connected to the front and rear ends of the enclosed substation box body. Two rectangular slots are symmetrically formed on the surface of the fixed door panels. Guide rods are fixedly connected in both of the two rectangular slots. A moving block is slidably connected to the outer surface of the guide rod.

[0008] Preferably, the adjusting component includes a moving plate fixedly connected to the front ends of the two moving blocks. Two limiting rods are symmetrically arranged on one end surface of the moving plate. A first fixing block is arranged at the end of the limiting rod away from the moving plate. A spring is movably sleeved on the outer surface of the limiting rod. A moving vertical plate is slidably connected to the outer surfaces of the two limiting rods.

[0009] Preferably, two movable slots are symmetrically formed on one side of the moving vertical plate. Movable blocks are arranged in both of the two movable slots. A box door is arranged on one side of the two movable blocks. A limiting slot is formed on the end surface of one end of the fixed door panel. A limiting block is arranged on one side of the moving vertical plate. T-shaped inserts are inserted into both the moving plate and the box door. A folding filter screen is fixedly connected between the two T-shaped inserts.

[0010] Preferably, one side of the limiting slot is an inclined surface. The limiting block is slidably connected in the limiting slot. One side of the limiting block is an inclined surface and has the same inclination angle as the inclined surface on one side of the limiting slot. A number of second fixing blocks are arranged on one side of the box door and are evenly distributed. A connecting door panel is arranged on one side of the multiple second fixing blocks. The connecting door panel is movably connected to the multiple second fixing blocks. Sliding grooves are formed on the surface of the enclosed substation box body at the lower end of the connecting door panel. Two rollers are symmetrically arranged at the lower end of the connecting door panel. The rollers are rollingly connected in the sliding grooves.

[0011] Preferably, the photovoltaic module includes a top cover fixedly connected to the top of the enclosed substation box body, a photovoltaic panel detachably connected to the upper end of the top cover, a storage battery detachably connected to the inside of the top cover, and a plurality of heat dissipation openings formed on both sides of the top cover. The photovoltaic panel is electrically connected to the storage battery.

[0012] Preferably, two rectangular through slots are symmetrically formed on the surface of the top plate. The driving component includes a servo motor detachably connected to the upper end of the top plate. The output end of the servo motor is detachably connected to a first rotating rod. Two first bevel gears are fixedly connected to the outer surface of the first rotating rod. A second bevel gear is meshed on both sides of the first bevel gear. A second rotating rod is arranged on one side of the second bevel gear. Two first bearing seats are symmetrically arranged at the upper end of the top plate. Two groups of second bearing seats are also symmetrically arranged at the upper end of the top plate.

[0013] Preferably, the heat dissipation component includes a heat dissipation plate fixedly connected to the upper end of the top plate. Two groups of heat dissipation fans are symmetrically arranged in the heat dissipation plate. One of the heat dissipation fans is fixedly connected to one end of the second rotating rod. A rotating shaft is arranged on one side of each of the remaining heat dissipation fans. A first gear is arranged on the outer surface of the second rotating rod. Second gears are arranged on the outer surfaces of multiple rotating shafts. A transmission chain is arranged on the outer surfaces of the first gear and the multiple second gears.

[0014] Preferably, the transmission chain meshes with the first gear and the multiple second gears.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. For the enclosed substation for urban power grid power supply, in the scenario of equipment maintenance and repair, pull the connecting door panel. When the box door moves, it drives the movable vertical plate to slide on the limiting rod. The spring restores its deformation, and the folded filter net cloth contracts. Personnel can enter and exit smoothly. After the maintenance is completed, close the box door and push the connecting door panel. The box door moves in the reverse direction, the spring is compressed, and the folded filter net cloth stretches and unfolds. This process not only ensures the convenience of personnel operation but also effectively blocks external dust and small animals in the closed state. During normal operation, external air enters through the filter plate for filtration, maintaining internal air circulation while keeping the environment clean, reducing the risk of faults such as equipment short - circuit and wear caused by impurities entering, and ensuring stable power supply.

[0017] 2. For the enclosed substation for urban power grid power supply, when there is sufficient sunlight during the day, the photovoltaic panel efficiently converts solar energy into electrical energy and stores it in the storage battery. This not only provides green power for internal lighting and other equipment in the substation, realizes energy self - sufficiency, and reduces operating costs, but also because it is installed on the upper end of the top cover, it can block direct sunlight and reduce the heat transfer into the substation interior. Compared with traditional substations, it reduces the burden on the heat dissipation system, further reduces energy consumption. At the same time, the heat dissipation ports on both sides of the top cover timely dissipate the heat generated by the operation of the photovoltaic components, ensuring its stable operation and improving the overall efficiency of energy utilization, which conforms to the concept of sustainable development.

[0018] 3. For the enclosed substation for urban power grid power supply, the drive component and the heat dissipation component cooperate closely, significantly improving the heat dissipation effect. After starting the servo motor, the first rotating rod drives the first bevel gear to rotate, which in turn causes the second bevel gear and the second rotating rod to rotate, driving the heat dissipation fan fixedly connected thereto to rotate. At the same time, through the gears and the transmission chain, other heat dissipation fans are driven to rotate synchronously. External air is filtered by the filter plate and then sucked into the box body, flows downward through the rectangular through - slot, and finally blows out from the folded filter net cloth. This cyclic process, combined with the sealed heat - conducting plate and the heat dissipation fins, can quickly take away the heat generated by the equipment operation, ensuring that equipment such as transformers and high - and low - voltage switchgear always work at an appropriate temperature, effectively extending the service life of the equipment, and ensuring the stability and reliability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of a partial structure of the present invention;

[0021] Figure 3 is of the present invention Figure 2 schematic diagram of the structure at position A;

[0022] Figure 4 is of the present invention Figure 3 schematic diagram of the structure at position B;

[0023] Figure 5 is a schematic diagram of a partial structure of the fixed door panel of the present invention;

[0024] Figure 6 is a sectional view of the photovoltaic module of the present invention;

[0025] Figure 7 is a schematic diagram of a partial structure of the enclosed substation box of the present invention;

[0026] Figure 8 is a schematic diagram of a partial structure of the top plate of the present invention;

[0027] Figure 9 is of the present invention Figure 8 schematic diagram of the structure at position C;

[0028] Figure 10 is of the present invention Figure 8 schematic diagram of the structure at position D;

[0029] Figure 11 is a schematic diagram of the internal structure of the enclosed substation box of the present invention.

[0030] In the figure: 1. Enclosed substation box body; 10. Partition board; 11. Transformer; 12. High-voltage switchgear cabinet; 13. Low-voltage switchgear cabinet; 14. Side plate; 15. Top plate; 16. Rectangular through slot; 17. Filter mesh plate; 18. Sealed heat conduction plate; 19. Heat dissipation fin; 2. Adjusting mechanism; 20. Position-limiting component; 201. Fixed door panel; 202. Rectangular slotted opening; 203. Guide rod; 204. Moving block; 21. Adjusting component; 211. Moving plate; 212. Position-limiting rod; 213. First fixing block; 214. Spring; 215. Moving vertical plate; 22. Activity slot; 23. Activity block; 24. Box door; 25. Position-limiting slot; 26. Position-limiting block; 27. Second fixing block; 28. Connecting door panel; 29. T-shaped insertion block; 30. Folding filter mesh cloth; 3. Photovoltaic module; 31. Top cover; 32. Photovoltaic panel; 33. Storage battery; 34. Heat dissipation port; 35. Chute; 36. Roller; 4. Driving component; 41. Servo motor; 42. First rotating rod; 43. First bevel gear; 44. Second bevel gear; 45. Second rotating rod; 46. First bearing seat; 47. Second bearing seat; 5. Heat dissipation component; 51. Heat dissipation plate; 52. Heat dissipation fan; 53. Rotating shaft; 54. First gear; 55. Second gear; 56. Transmission chain. Specific embodiments

[0031] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0032] Example 1, as Figure 1 , Figure 7 and Figure 11 shown, an enclosed substation for urban power grid power supply includes an enclosed substation box body 1, a partition board 10 fixedly connected inside the enclosed substation box body 1, a transformer 11, a high-voltage switchgear cabinet 12 and a low-voltage switchgear cabinet 13 installed inside the enclosed substation box body 1, side plates 14 fixedly connected to both sides of the enclosed substation box body 1, a top plate 15 fixedly connected inside the enclosed substation box body 1, a filter mesh plate 17 and a sealed heat conduction plate 18 detachably embedded on the surface of the side plates 14, and heat dissipation fins 19 fixedly connected to the surface of the sealed heat conduction plate 18. Two groups of adjusting mechanisms 2 are symmetrically arranged at both front and rear ends of the enclosed substation box body 1. A photovoltaic module 3 is arranged on the top of the enclosed substation box body 1. A driving component 4 is arranged at the upper end of the top plate 15. Two groups of heat dissipation components 5 are symmetrically arranged at the upper end of the top plate 15;

[0033] It should be noted that in the initial installation stage of the substation, the transformer 11, the high-voltage switchgear cabinet 12, and the low-voltage switchgear cabinet 13 are installed in the enclosed substation box body 1. Different equipment areas are reasonably separated by the partition 10 to ensure that each equipment is firmly installed and the wiring is standardized. After installing the side plates 14 and the top plate 15, the filter mesh plate 17 and the sealed heat-conducting plate 18 are embedded in the corresponding positions of the side plates 14, and the heat dissipation fins 19 are installed on the surface of the sealed heat-conducting plate 18 to complete the construction of the basic framework of the substation.

[0034] Embodiment 2, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 11 shown, a closed substation for urban power grid power supply, the adjusting mechanism 2 includes a limiting component 20 and an adjusting component 21. In the limiting component 20, the fixed door panels 201 fixedly connected to the front and rear ends of the enclosed substation box body 1 have two rectangular slots 202 symmetrically opened on their surfaces. Guide rods 203 are fixedly connected in the rectangular slots 202, and moving blocks 204 are slidably connected to the outer surfaces of the guide rods 203. In the adjusting component 21, the front ends of the two moving blocks 204 are fixedly connected to a moving plate 211. Two limiting rods 212 are symmetrically arranged on one end surface of the moving plate 211. A first fixing block 213 is arranged at the end of the limiting rod 212 far from the moving plate 211. A spring 214 is movably sleeved on the outer surface of the limiting rod 212. A moving vertical plate 215 is slidably connected to the outer surfaces of the two limiting rods 212. Two moving slots 22 are symmetrically opened on one side of the moving vertical plate 215. Moving blocks 23 are arranged in the moving slots 22. One side of the moving block 23 is connected to the box door 24. A limiting slot 25 is opened on one end surface of the fixed door panel 201. A limiting block 26 is arranged on one side of the moving vertical plate 215. T-shaped inserts 29 are inserted into both the moving plate 211 and the box door 24. A folding filter mesh cloth 30 is fixedly connected between the two T-shaped inserts 29;

[0035] It should be noted that when it is necessary to open the box door 24 for equipment maintenance or repair, the connecting door panel 28 is pulled. The connecting door panel 28 and the box door 24 are movably connected through the second fixing block 27. The rollers 36 at the lower end of the connecting door panel 28 roll along the chute 35 to drive the box door 24 to move. When the box door 24 moves, the moving block 23 slides in the moving slot 22 to drive the moving vertical plate 215 to move. The limiting block 26 slides in the limiting slot 25. As the limiting block 26 moves, the moving vertical plate 215 slides on the limiting rod 212, and the spring 214 gradually returns to its deformed state. The distance between the box door 24 and the moving plate 211 is reduced, and the folding filter mesh cloth 30 shrinks, facilitating personnel to enter and exit the interior of the substation;

[0036] When the maintenance or repair work is completed and the cabinet door 24 is closed, push the connecting door panel 28 to make the roller 36 roll reversely along the chute 35, driving the cabinet door 24 to move back. The cabinet door 24 slides reversely in the movable groove 22 through the movable block 23, pushing the movable vertical plate 215 to slide on the limiting rod 212. At this time, the spring 214 is compressed to generate elastic potential energy. The limiting block 26 slides reversely in the limiting groove 25 to ensure the stable movement of the movable vertical plate 215. As the cabinet door 24 moves, the distance between the cabinet door 24 and the movable plate 211 gradually increases, and the folded filter net cloth 30 is stretched and unfolded until the cabinet door 24 is completely closed, forming a closed protective structure to prevent external dust, small animals, etc. from entering the substation interior.

[0037] Embodiment 3, as Figure 1 and Figure 6 shown, a closed substation for urban power grid power supply, the photovoltaic module 3 includes a top cover 31 fixedly connected to the top of the closed substation box body 1, a photovoltaic panel 32 detachably connected to the upper end of the top cover 31, a storage battery 33 detachably connected inside the top cover 31, and a plurality of heat dissipation openings 34 opened on both sides of the top cover 31. The photovoltaic panel 32 is electrically connected to the storage battery 33;

[0038] It should be noted that when there is sufficient sunlight during the day, the photovoltaic panel 32 converts solar energy into electrical energy, and the converted electrical energy is stored in the storage battery 33. The photovoltaic panel 32 is installed at the upper end of the top cover 31, which can not only generate electricity but also block the direct sunlight on the top cover 31, reducing the heat entering the substation interior. The heat dissipation openings 34 on both sides of the top cover 31 timely dissipate the heat generated by the operation of the photovoltaic module 3 to ensure the stable operation of the photovoltaic module 3. When the equipment such as lighting inside the substation needs electricity, the storage battery 33 provides power support to realize the effective utilization of energy.

[0039] Embodiment 4, as Figure 1 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown in the figure, there is a closed substation for urban power grid power supply. Two rectangular through slots 16 are symmetrically opened on the surface of the top plate 15. The driving assembly 4 includes a servo motor 41 detachably connected to the upper end of the top plate 15. The output end of the servo motor 41 is detachably connected to the first rotating rod 42. Two first bevel gears 43 are fixedly connected to the outer surface of the first rotating rod 42. The first bevel gears 43 are meshed with the second bevel gears 44 on both sides. A second rotating rod 45 is arranged on one side of the second bevel gear 44. Two first bearing seats 46 and two groups of second bearing seats 47 are symmetrically arranged at the upper end of the top plate 15. The heat dissipation assembly 5 includes a heat dissipation plate 51 fixedly connected to the upper end of the top plate 15. Two groups of heat dissipation fans 52 are symmetrically arranged in the heat dissipation plate 51. One of the heat dissipation fans 52 is fixedly connected to one end of the second rotating rod 45. A rotating shaft 53 is arranged on one side of the remaining heat dissipation fans 52. A first gear 54 is arranged on the outer surface of the second rotating rod 45. Second gears 55 are arranged on the outer surfaces of multiple rotating shafts 53. A transmission chain 56 is arranged on the outer surfaces of the first gear 54 and the multiple second gears 55. The transmission chain 56 is meshed with the first gear 54 and the multiple second gears 55;

[0040] It should be noted that during the operation of the substation, the servo motor 41 is started. The servo motor 41 drives the first rotating rod 42 to rotate. The first bevel gear 43 on the first rotating rod 42 rotates accordingly. The first bevel gear 43 drives the second bevel gear 44 to rotate, thereby driving the second rotating rod 45 to rotate. The second rotating rod 45 drives the heat dissipation fan 52 fixedly connected thereto to rotate. At the same time, the other heat dissipation fans 52 are driven to rotate synchronously through the first gear 54, the transmission chain 56 and the second gear 55. After being filtered by the filter screen plate 17, the outside air is blown into the closed substation box body 1 by the heat dissipation fans 52. The air flows downward through the rectangular through slots 16 on the top plate 15 and finally blows out from the folding filter cloth 30, realizing the circulation of the air inside the box body and the outside air. Cooperating with the sealed heat conduction plate 18 and the heat dissipation fins 19, the temperature inside the substation is effectively reduced, ensuring the normal operation of the equipment.

[0041] Example Five, comprehensive Figures 1 - 9, the daily maintenance and inspection of the overall equipment are described. Regularly check the operating parameters of the transformer 11, high-voltage power distribution cabinet 12, and low-voltage power distribution cabinet 13 to ensure the normal operation of the equipment. Check whether the filter mesh plate 17 is blocked. If it is blocked, clean or replace it in time to ensure smooth air circulation. Check whether the sealed heat conduction plate 18 and heat dissipation fins 19 are in good condition. If there is damage, repair or replace them in time to ensure the heat dissipation effect. Check each component of the adjustment mechanism 2, such as the guide rod 203, moving block 204, spring 214, etc. to ensure the smooth opening and closing of the cabinet door 24 and the normal expansion and contraction of the folding filter screen cloth 30. Check the photovoltaic module 3 and see if there is dirt on the surface of the photovoltaic panel 32, which affects the power generation efficiency. Check the power and performance of the storage battery 33 and perform maintenance or replacement in time. Regularly lubricate and check the bearings of components such as the servo motor 41, first rotating rod 42, and second rotating rod 45 of the drive assembly 4 to ensure the normal operation of the heat dissipation assembly 5.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed substation for urban power grid power supply, comprising a closed substation box body (1), a partition (10) fixedly connected inside the closed substation box body (1), a transformer (11), a high-voltage switchgear (12) and a low-voltage switchgear (13) installed inside the closed substation box body (1), side plates (14) fixedly connected to both sides of the closed substation box body (1), a top plate (15) fixedly connected inside the closed substation box body (1), a filter screen plate (17) and a sealed heat-conducting plate (18) detachably embedded on the surface of the side plates (14), and heat dissipation fins (19) fixedly connected to the surface of the sealed heat-conducting plate (18), characterized in that: Two sets of adjusting mechanisms (2) are symmetrically arranged at both the front and rear ends of the enclosed substation box body (1). A photovoltaic module (3) is arranged on the top of the enclosed substation box body (1). A driving component (4) is arranged at the upper end of the top plate (15). Two sets of heat dissipation components (5) are symmetrically arranged at the upper end of the top plate (15). The adjusting mechanism (2) includes a limiting component (20) and an adjusting component (21) fixedly connected to the front and rear ends of the enclosed substation box body (1).

2. The enclosed substation for urban power grid power supply according to claim 1, characterized in that: The limiting component (20) includes a fixed door plate (201) fixedly connected to the front and rear ends of the enclosed substation box body (1). Two rectangular slots (202) are symmetrically formed on the surface of the fixed door plate (201). Guide rods (203) are fixedly connected in both of the two rectangular slots (202). A moving block (204) is slidably connected to the outer surface of the guide rod (203).

3. The enclosed substation for urban power grid power supply according to claim 2, characterized in that: The adjusting component (21) includes a moving plate (211) fixedly connected to the front ends of the two moving blocks (204). Two limiting rods (212) are symmetrically arranged on one end surface of the moving plate (211). A first fixing block (213) is arranged at the end of the limiting rod (212) away from the moving plate (211). A spring (214) is movably sleeved on the outer surface of the limiting rod (212). A moving vertical plate (215) is slidably connected to the outer surfaces of the two limiting rods (212).

4. A closed substation for urban power grid power supply according to claim 3, characterized in that: Two moving slots (22) are symmetrically formed on one side of the moving vertical plate (215). Moving blocks (23) are arranged in both of the two moving slots (22). A box door (24) is arranged on one side of the two moving blocks (23). A limiting slot (25) is formed on one end surface of the fixed door plate (201). A limiting block (26) is arranged on one side of the moving vertical plate (215). T-shaped inserts (29) are inserted into both the moving plate (211) and the box door (24). A folding filter cloth (30) is fixedly connected between the two T-shaped inserts (29).

5. A closed substation for urban power grid power supply according to claim 4, characterized in that: One side of the limiting slot (25) is a slope. The limiting block (26) is slidably connected in the limiting slot (25). One side of the limiting block (26) is a slope and has the same inclination angle as the slope on one side of the limiting slot (25). A number of second fixing blocks (27) are arranged on one side of the box door (24) and are evenly distributed. A connecting door plate (28) is arranged on one side of the multiple second fixing blocks (27). The connecting door plate (28) is movably connected to the multiple second fixing blocks (27). Chutes (35) are formed on the surface of the enclosed substation box body (1) at the lower end of the connecting door plate (28). Two rollers (36) are symmetrically arranged at the lower end of the connecting door plate (28). The rollers (36) are rollingly connected in the chutes (35).

6. A closed substation for urban power grid power supply according to claim 1, characterized in that: The photovoltaic module (3) includes a top cover (31) fixedly connected to the top of the enclosed substation box body (1), a photovoltaic panel (32) detachably connected to the upper end of the top cover (31), a storage battery (33) detachably connected inside the top cover (31), and a plurality of heat dissipation openings (34) formed on both sides of the top cover (31). The photovoltaic panel (32) is electrically connected to the storage battery (33).

7. The enclosed substation for urban power grid power supply according to claim 1, characterized in that: Two rectangular through grooves (16) are symmetrically formed on the surface of the top plate (15). The driving assembly (4) includes a servo motor (41) detachably connected to the upper end of the top plate (15). The output end of the servo motor (41) is detachably connected to a first rotating rod (42). Two first bevel gears (43) are fixedly connected to the outer surface of the first rotating rod (42). A second bevel gear (44) is meshed on both sides of the first bevel gear (43). A second rotating rod (45) is arranged on one side of the second bevel gear (44). Two first bearing seats (46) are symmetrically arranged on the upper end of the top plate (15). Two groups of second bearing seats (47) are also symmetrically arranged on the upper end of the top plate (15).

8. A closed substation for urban power grid power supply according to claim 7, characterized in that: The heat dissipation assembly (5) includes a heat dissipation plate (51) fixedly connected to the upper end of the top plate (15). Two groups of heat dissipation fans (52) are symmetrically arranged inside the heat dissipation plate (51). One of the heat dissipation fans (52) is fixedly connected to one end of the second rotating rod (45). A rotating shaft (53) is arranged on one side of each of the remaining heat dissipation fans (52). A first gear (54) is arranged on the outer surface of the second rotating rod (45). A second gear (55) is arranged on the outer surface of each of the plurality of rotating shafts (53). A transmission chain (56) is arranged on the outer surfaces of the first gear (54) and the plurality of second gears (55).

9. A closed substation for urban power grid power supply according to claim 8, characterized in that: The transmission chain (56) is meshed with the first gear (54) and the plurality of second gears (55).

Images