Prefabricated photovoltaic substation

Abstract

The invention discloses a preassembled photovoltaic transformer substation, and relates to the technical field of preassembled transformer substations, and the preassembled photovoltaic transformer substation is characterized in that the side end of a box body is fixedly connected with an air inlet pipe communicated with the inner cavity of the box body, one end, far away from the air inlet pipe, of the inner wall of the box body is fixedly connected with a temperature detector, and the inlet end of the air inlet pipe is vertically downward; the inner wall of the air inlet pipe is rotationally connected with a blocking plate used for blocking the inlet end of the air inlet pipe, the air outlet pipe is fixedly connected with the inner wall of the box body and communicates with the air inlet pipe, and the inner wall of the air outlet pipe is fixedly connected with a fan through a fixing frame. The inner wall of the box body is fixedly connected with a blocking assembly used for blocking the exhaust plate. The fan extracts air and discharges the air into the box body, and airflow flows along the box body and is discharged from the filtering holes formed in the exhaust plate, so that the effect of air cooling on equipment in the box body is achieved, and the situation that when an air conditioner breaks down, the temperature in the box body rises, and the equipment in the box body is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated substations, and in particular to a prefabricated photovoltaic substation. Background Art

[0002] A prefabricated substation is a type of substation that integrates photovoltaic modules, DC combiner boxes, inverters, transformers, switchgear, protection devices, monitoring systems and other equipment in a photovoltaic power generation system into a prefabricated box. It is usually used for grid-connected or off-grid applications of photovoltaic power generation projects. It can convert solar energy into electrical energy and convert it into AC power suitable for transmission and use.

[0003] In the prior art, prefabricated substations are often installed outdoors. Prefabricated substations use air conditioners to cool the equipment installed inside. The air conditioners are mainly composed of refrigeration equipment, fans and control equipment. The refrigeration equipment absorbs and cools the hot air in the box, and then introduces cold air into the box through the fan. The control device can set the temperature of the cold air introduced by the air conditioner, thereby achieving the effect of cooling the prefabricated substation.

[0004] However, when the prefabricated substation is in a high temperature season, the air conditioner needs to run for a long time. When the air conditioner breaks down, the staff cannot rush to the outdoors to repair the air conditioner in time, which causes the high temperature generated by the internal equipment of the prefabricated substation to be unable to be discharged in time, thereby affecting the normal operation of the prefabricated substation and even causing a fire. Summary of the Invention

[0005] The purpose of the present invention is to provide a prefabricated photovoltaic substation to solve the technical problem in the prior art that a faulty air conditioner cannot be repaired in time, which affects the normal operation of the prefabricated substation.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] Prefabricated photovoltaic substation, including:

[0008] A box body, wherein an air inlet pipe communicating with the inner cavity of the box body is fixedly connected to a side end of the box body, a temperature detector is fixedly connected to an inner wall of the box body at an end away from the air inlet pipe, an inlet end of the air inlet pipe is vertically downward, and a blocking plate for blocking the inlet end of the air inlet pipe is rotatably connected to the inner wall of the air inlet pipe;

[0009] An air outlet pipe, the air outlet pipe is fixedly connected to the inner wall of the box and is in communication with the air inlet pipe. The inner wall of the air outlet pipe is fixedly connected to a fan via a fixing frame;

[0010] An exhaust plate is fixedly connected to one end of the box away from the air inlet pipe and is communicated with the inner cavity of the box. The inner wall of the box is fixedly connected to a blocking component for blocking the exhaust plate.

[0011] As a further solution of the present invention: a filter plate is fixedly connected to the inlet end of the air intake pipe, and a drip groove is provided at the bottom end of the air intake pipe.

[0012] As a further solution of the present invention: the side end of the outlet pipe is fixedly connected to a guide pipe with the outlet end pointing vertically downward, the inner wall of the outlet pipe is slidably connected to an absorption component, the inner wall of the outlet pipe is fixedly connected to a temperature sensor located at the top of the fan, and the wire harness pipe fixedly connected to the top of the fan passes through the top of the outlet pipe.

[0013] As a further solution of the present invention: the absorption component includes: a connecting frame, a connecting plate and an absorption pad, the connecting plate is connected to the exhaust pipe, the connecting frame is provided with several groups, and is fixedly connected to both sides of the absorption pad respectively, the absorption pad is slidably connected to the inner wall of the exhaust pipe, and the absorption pad and the side ends of the connecting frame are fixedly connected to the connecting plate.

[0014] As a further solution of the present invention: the top of the connecting plate is supported and connected with a nut, the top of the outlet pipe is fixedly connected with a locking seat, the side end of the locking seat is fixedly connected with a locking shaft passing through the top of the connecting plate, and the locking shaft is threadedly connected to the inner wall of the nut.

[0015] As a further solution of the present invention: a recovery shell is provided at the bottom of the open end of the guide tube, a recovery pad is supported and connected to the inner wall of the groove formed in the recovery shell, and a plurality of recovery tubes are formed through the recovery pad.

[0016] As a further solution of the present invention: the refrigeration equipment fixedly connected to the side end of the box is communicated with the inner cavity of the box, the top of the refrigeration equipment is fixedly connected to a fan through a connecting box, the side end of the fan is communicated with the inner cavity of the air inlet pipe through a connecting pipe, and the inner wall of the box is fixedly connected to a control device.

[0017] As a further solution of the present invention: the inner wall of the box is fixedly connected to a return pipe connected to the refrigeration equipment, and the outlet end of the return pipe is fixedly connected to a truncated cone-shaped return head, which is arranged at one end of the box away from the refrigeration equipment.

[0018] As a further solution of the present invention: the side end of the blocking plate is fixedly connected to a fixed shaft passing through the intake pipe, the edge of the blocking plate is fixedly connected to a plastic sealing ring, and the driver fixedly connected to the fixed shaft is fixedly connected to the side end of the intake pipe.

[0019] As a further solution of the present invention: the blocking assembly includes: a blocking plate, a telescopic rod and a telescopic controller, the telescopic controller is fixedly connected to the side end of the blocking plate through the telescopic rod, and the telescopic controller is fixedly connected to the inner wall of the box, and the guide rails slidingly connected at the upper and lower ends of the blocking plate are fixedly connected to the inner wall of the box.

[0020] Beneficial effects of the present invention:

[0021] 1. When the air conditioner is damaged, the temperature detector detects that the temperature inside the box has risen, the blocking plate rotates to release the blockage of the air inlet pipe, and the blocking component releases the blockage of the exhaust plate. The fan draws air into the box, and the air flows along the box and is discharged from the filter holes opened in the exhaust plate, thereby achieving the effect of air cooling for the equipment in the box, avoiding the impact of the temperature rise in the box on the equipment inside the box when the air conditioner fails.

[0022] 2. The exhaust plate can block the dust outside the box to prevent dust from entering the box through the exhaust plate. When the staff is repairing the air conditioner, the fan continues to run to prevent the heat generated by the equipment in the box from being removed during the maintenance process, ensuring that the temperature inside the box does not continue to rise. When the air conditioner is repaired and starts running, the fan stops running, and then the blocking plate blocks the air inlet pipe. At this time, when the air conditioner draws cold air into the box, the cold air squeezes out the hot air in the box, and the hot air is discharged from the exhaust plate to prevent moisture in the hot air from remaining in the box, thereby preventing moisture in the hot air from condensing and affecting the equipment in the box.

[0023] 3. When the box is in rainy weather, the inlet end of the air intake pipe is vertically downward, so that rainwater will not enter the air intake pipe, thereby preventing rainwater from entering the box and affecting the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a top view of the overall structure of the present invention;

[0027] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 BB is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at A;

[0030] Figure 6 It is a schematic diagram of the structure of the return head of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the blocking assembly of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the recovery pad of the present invention;

[0033] Figure 9 Schematic diagram of the air intake pipe structure of the present invention;

[0034] Figure 10 Schematic diagram of the baffle structure of the present invention;

[0035] Figure 11 Schematic diagram of the air outlet pipe structure of the present invention;

[0036] Figure 12 It is a schematic structural diagram of the absorption component of the present invention.

[0037] In the figure: 1. Box body; 2. Air inlet pipe; 3. Driver; 4. Connecting pipe; 5. Refrigeration equipment; 6. Connecting box; 7. Fan; 8. Filter plate; 9. Blocking plate; 10. Outlet pipe; 11. Return pipe; 12. Control device; 13. Return head; 14. Blocking plate; 15. Exhaust plate; 16. Fan; 17. Cable bundle; 18. Humidity sensor; 19. Guide pipe; 20. Recovery shell; 21. Recovery pad; 22. Guide rail; 23. Telescopic rod; 24. Telescopic controller; 25. Recovery pipe; 26. Drip groove; 27. Fixed shaft; 28. Sealing ring; 29. Fixed frame; 30. Connecting frame; 31. Connecting plate; 32. Locking seat; 33. Locking shaft; 34. Absorption pad; 35. Nut; 36. Temperature detector. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] like Figures 1-12 As shown, the prefabricated photovoltaic substation includes: a box 1, an air outlet pipe 10 and an exhaust plate 15.

[0040] The side end of the box body 1 is fixedly connected to an air inlet pipe 2 that is connected to the inner cavity of the box body 1. A temperature detector 36 is fixedly connected to the inner wall of the box body 1 at the end away from the air inlet pipe 2. The inlet end of the air inlet pipe 2 is vertically downward, and the inner wall of the air inlet pipe 2 is rotatably connected to a blocking plate 9 for blocking the inlet end of the air inlet pipe 2. The air outlet pipe 10 is fixedly connected to the inner wall of the box body 1 and is communicated with the air inlet pipe 2. The inner wall of the air outlet pipe 10 is fixedly connected to a fan 16 through a fixing bracket 29. The exhaust plate 15 is fixedly connected to the end of the box body 1 away from the air inlet pipe 2 and is communicated with the inner cavity of the box body 1. A blocking component for blocking the exhaust plate 15 is fixedly connected to the inner wall of the box body 1. When the air conditioner fails, the heat generated by the equipment in the box body 1 cannot be removed. At this time, the temperature in the box body 1 begins to rise. When the temperature detector 36 detects a temperature rise, the temperature detector 36 transmits a signal to the cloud to remind the monitoring personnel that the air conditioner is broken. At the same time, the blocking plate 9 rotates along the axis, and the blocking plate 9 releases the blockage of the inlet end of the air inlet pipe 2. The blocking component runs to release the blockage of the exhaust plate 15, and then the fan 16 runs. The fan 16 draws air through the inlet end of the air inlet pipe 2, and then passes the airflow into the box body 1 through the outlet pipe 10. The airflow flows in the box body 1, taking away the heat generated by the equipment in the box body 1, and finally the airflow flows out from the exhaust plate 15, thereby achieving the effect of air cooling the equipment in the box body 1, avoiding the temperature rise in the box body 1 affecting the equipment in the box body 1 when the air conditioner fails.

[0041] When the air flow is discharged from the exhaust plate 15, the exhaust plate 15 is provided with a plurality of filter holes, and the air flow is discharged from the filter holes. The exhaust plate 15 can block the dust outside the box 1 to prevent the dust from entering the box 1 from the exhaust plate 15. When the staff is repairing the air conditioner, the fan 16 continues to run to prevent the heat generated by the equipment in the box 1 from not being removed during the maintenance of the air conditioner, thereby ensuring that the temperature in the box 1 does not continue to rise. When the air conditioner is repaired and starts running, the fan 16 stops running, and then the blocking plate 9 blocks the air inlet pipe 2. At this time, when the air conditioner passes cold air into the box 1, the cold air squeezes out the hot air in the box 1, and the hot air is discharged from the exhaust plate 15 to prevent the hot air from containing moisture and remaining in the box 1, thereby preventing the moisture in the hot air from condensing and affecting the equipment in the box 1.

[0042] Since the box body 1 is placed outdoors, when it rains, in order to prevent rainwater from entering the air intake pipe 2 and being sucked into the box body 1, the inlet end of the air intake pipe 2 is vertically downward, so that rainwater will not enter the air intake pipe 2, thereby preventing rainwater from entering the box body 1 and affecting the normal operation of the equipment.

[0043] In some specific embodiments, a filter plate 8 is fixedly connected to the inlet end of the air intake pipe 2, and a drip groove 26 is provided at the bottom end of the air intake pipe 2. In order to prevent external dust from entering the interior of the box body 1 through the air intake pipe 2, when air enters the air intake pipe 2, the filter plate 8 can block external dust, thereby achieving the effect of filtering the air. When the air intake pipe 2 is in a rainy day, rainwater will be suspended on the outer wall of the air intake pipe 2. In order to prevent rainwater from being adsorbed on the edge of the inlet end of the air intake pipe 2 and thus being sucked into the air intake pipe 2, when rainwater flows along the outer wall of the air intake pipe 2 to the edge of the outlet end, the drip groove 26 provided in the air intake pipe 2 can block the rainwater, thereby preventing rainwater from being sucked into the air intake pipe 2.

[0044] In some specific embodiments, the side end of the air outlet pipe 10 is fixedly connected to a guide pipe 19 with the outlet end pointing vertically downward, the inner wall of the air outlet pipe 10 is slidably connected to an absorption component, the inner wall of the air outlet pipe 10 is fixedly connected to a temperature sensor 18 located at the top of the fan 16, and the wiring pipe 17 fixedly connected to the top of the fan 16 passes through the top of the air outlet pipe 10. When the air conditioner is repaired and starts running, the air conditioner passes the cold air into the box body 1 through the air outlet pipe 10. When the cold air is discharged from the air outlet pipe 10, the heat generated by the equipment is uneven, which causes uneven heat dissipation of the equipment. When the cold air is blown directly onto the equipment, when the local temperature of the equipment is lower than the dew point temperature, condensation will occur on the surface of the equipment. Therefore, when the cold air flows from the air outlet pipe 10, the cold air first enters the guide pipe 19, and the guide pipe 19 discharges the cold air vertically downward into the box body 1 to prevent the cold air from blowing directly onto the equipment, causing condensation on the surface of the equipment.

[0045] When the fan 16 is running, in order to prevent the wires supplying power to the fan 16 from becoming entangled with the fan 16, when the fan 16 is installed through the fixing bracket 29, the wires are passed through the air outlet pipe 10, and then the wires are slid along the inner wall of the wire harness tube 17, and finally the wires are connected to the fan 16. The wire harness tube 17 can limit the wires to prevent the fan 16 from becoming entangled with the wires when the fan 16 is running.

[0046] When the temperature sensor 18 detects that the air humidity in the box 1 is higher than the set value, the repaired air conditioner turns on the dehumidification mode, and the air conditioner removes the moisture contained in the air in the box 1, thereby avoiding condensation of the equipment in the box 1.

[0047] In some specific embodiments, the absorption component includes: a connecting frame 30, a connecting plate 31 and an absorption pad 34. The connecting plate 31 is connected to the air outlet pipe 10. The connecting frame 30 is provided with several groups, which are fixedly connected to both sides of the absorption pad 34 respectively. The absorption pad 34 is slidably connected to the inner wall of the air outlet pipe 10. The side ends of the absorption pad 34 and the connecting frame 30 are fixedly connected to the connecting plate 31. In order to avoid condensation on the surface of the equipment in the box body 1, when the cold air is transported through the air outlet pipe 10, the cold air first contacts the inner wall of the air outlet pipe 10, and the inner wall of the air outlet pipe 10 first condenses. At this time, the absorption pad 34 absorbs water. On the one hand, the absorption component achieves the effect of absorbing moisture in the box body 1. On the other hand, it prevents the cold air from entering the box body 1 with water droplets generated on the inner wall of the air outlet pipe 10. The two ends of the absorption pad 34 are supported and fixed by the connecting frame 30.

[0048] When the nut 35 is screwed down, the nut 35 is screwed down and the nut 35 is screwed down, thereby releasing the screw thread of the nut 35 and the locking shaft 33. The nut 33 is screwed down and the nut 35 is screwed down. When the nut 35 is screwed down, the nut 33 is screwed down and the locking shaft 33 is screwed down. When the nut 35 is screwed down, the nut 33 is screwed down and the nut 35 is screwed down. When the nut 35 is screwed down, the nut 33 is screwed down and the locking shaft 33 is screwed down.

[0049] When the air conditioner is damaged and the fan 16 is running, the hot air drawn by the fan 16 flows along the air outlet pipe 10. The hot air can dry the moisture adsorbed by the absorption pad 34, thereby achieving the effect of removing the moisture adsorbed by the absorption pad 34.

[0050] In some specific embodiments, a recovery shell 20 is provided at the bottom of the open end of the guide tube 19, and the inner wall of the groove opened in the recovery shell 20 is supported and connected with a recovery pad 21. A number of recovery tubes 25 are opened through the recovery pad 21. When cold air is blown out from the guide tube 19, the cold air is directly blown to the inner wall of the box body 1. In order to avoid the phenomenon of water condensation on the inner wall of the box body 1, when the cold air flows out of the guide tube 19, the cold air passes through the recovery tube 25 and contacts the recovery shell 20. The cold air and the recovery shell 20 contact and condense. The recovery pad 21 absorbs the water droplets generated by the recovery shell 20, thereby avoiding the phenomenon of water condensation on the inner wall of the box body 1. At the same time, the effect of removing moisture from the air in the box body 1 is achieved, thereby avoiding the phenomenon of water condensation on the equipment in the box body 1.

[0051] When the air conditioner is damaged and the fan 16 is running, the hot air drawn by the fan 16 can dry the moisture adsorbed by the recovery pad 21 .

[0052] In some specific embodiments, the refrigeration device 5 fixedly connected to the side end of the box 1 is interconnected with the inner cavity of the box 1, and the top of the refrigeration device 5 is fixedly connected to the fan 7 through the connecting box 6. The side end of the fan 7 is interconnected with the inner cavity of the air inlet pipe 2 through the connecting pipe 4. The inner wall of the box 1 is fixedly connected with the control device 12. When the air conditioner is repaired, the refrigeration device 5 cools down the air in the box 1, and then the refrigeration device 5 transports the cold air to the fan 7 through the connecting box 6. The fan 7 transports the cold air to the air inlet pipe 2 through the connecting pipe 4. The cold air passes through the box 1 and flows into the outlet pipe 10, and then is transported to the box 1 through the outlet pipe 10 and the guide pipe 19. The humidity signal detected by the temperature sensor 18 is transmitted to the control device 12, and the control device 12 controls the refrigeration device 5 and the fan 7 to remove the humidity in the box 1.

[0053] When the temperature detector 36 detects that the temperature inside the box 1 is lower than the dew point temperature, the temperature detector 36 transmits a signal to the control device 12, and the control device 12 controls the refrigeration equipment 5 and the fan 7 to stop running, thereby preventing cold air from entering the box 1 and causing water condensation in the equipment inside the box 1.

[0054] In some specific embodiments, the inner wall of the box body 1 is fixedly connected to a return pipe 11 connected to the refrigeration device 5, and the outlet end of the return pipe 11 is fixedly connected to a truncated cone-shaped return head 13. The return head 13 is arranged at an end of the box body 1 away from the refrigeration device 5. When the cold air enters the box body 1, the hot air passes through the box body 1 and enters the refrigeration device 5. In order to prevent the cold air from directly entering the refrigeration device 5 when flowing out of the guide pipe 19, resulting in the cold air being unable to fully cool the box body 1, when the cold air enters the box body 1, the cold air squeezes the hot air in the box body 1. Since the return head 13 is arranged at an end of the box body 1 away from the refrigeration device 5, the squeezed hot air enters the return pipe 11 from the return head 13, and then flows along the return pipe 11 to the refrigeration device 5. The shape of the return head 13 increases the area of the air entering the return pipe 11, thereby improving the efficiency of the hot air entering the return pipe 11.

[0055] In some specific embodiments, the side end of the baffle plate 9 is fixedly connected to a fixed shaft 27 that passes through the air intake pipe 2, and the edge of the baffle plate 9 is fixedly connected to a plastic sealing ring 28. The driver 3 fixedly connected to the fixed shaft 27 is fixedly connected to the side end of the air intake pipe 2. When the baffle plate 9 needs to rotate, the driver 3 runs, and the driver 3 controls the fixed shaft 27 to rotate. The fixed shaft 27 is clamped at both ends of the baffle plate 9 and is fixed to the side end of the baffle plate 9. The fixed shaft 27 drives the baffle plate 9 to rotate. The baffle plate 9 is circular, and then the rotated baffle plate 9 releases the effect of blocking the air intake pipe 2. When the baffle plate 9 blocks the air intake pipe 2, the baffle plate 9 drives the sealing ring 28 to reset. The sealing ring 28 is squeezed against the inner wall of the air intake pipe 2, thereby achieving the effect of sealing the gap between the baffle plate 9 and the air intake pipe 2.

[0056] In some specific embodiments, the blocking assembly includes: a blocking plate 14, a telescopic rod 23 and a telescopic controller 24. The telescopic controller 24 is fixedly connected to the side end of the blocking plate 14 through the telescopic rod 23, and the telescopic controller 24 is fixedly connected to the inner wall of the box body 1. The guide rails 22 slidingly connected at the upper and lower ends of the blocking plate 14 are fixedly connected to the inner wall of the box body 1. When the blocking assembly is running, the telescopic controller 24 controls the telescopic rod 23 to retract, and the telescopic rod 23 moves with the blocking plate 14. The upper and lower ends of the blocking plate 14 slide along the guide rails 22, thereby releasing the effect of the blocking plate 14 on the exhaust plate 15. A sealing gasket is provided between the blocking plate 14 and the box body 1, so that the sealing gasket can seal the gap between the blocking plate 14 and the box body 1, wherein the guide rail 22 can guide and limit the movement of the blocking plate 14, thereby ensuring the stability of the movement of the blocking plate 14.

[0057] The above describes several embodiments of the present invention in detail, but the embodiments of the present invention are not limited to these and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. Prefabricated photovoltaic substation, characterized by: include: A box body (1), wherein a side end of the box body (1) is fixedly connected to an air inlet pipe (2) communicating with an inner cavity of the box body (1), an inner wall of the box body (1) is fixedly connected to an end away from the air inlet pipe (2) with a temperature detector (36), an inlet end of the air inlet pipe (2) is vertically downward, and a blocking plate (9) for blocking the inlet end of the air inlet pipe (2) is rotatably connected to the inner wall of the air inlet pipe (2); An air outlet pipe (10), the air outlet pipe (10) is fixedly connected to the inner wall of the box body (1) and is in communication with the air inlet pipe (2), and the inner wall of the air outlet pipe (10) is fixedly connected to a fan (16) via a fixing frame (29); An exhaust plate (15) is fixedly connected to one end of the box (1) away from the air inlet pipe (2) and is in communication with the inner cavity of the box (1); and a sealing component for sealing the exhaust plate (15) is fixedly connected to the inner wall of the box (1).

2. The prefabricated photovoltaic substation according to claim 1, characterized in that: The inlet end of the air inlet pipe (2) is fixedly connected with a filter plate (8), and the bottom end of the air inlet pipe (2) is provided with a drip groove (26).

3. The prefabricated photovoltaic substation according to claim 1, characterized in that: The side end of the air outlet pipe (10) is fixedly connected to a guide pipe (19) with the outlet end pointing vertically downward, the inner wall of the air outlet pipe (10) is slidably connected to an absorption component, the inner wall of the air outlet pipe (10) is fixedly connected to a temperature sensor (18) located at the top of the fan (16), and the wire harness pipe (17) fixedly connected to the top of the fan (16) passes through the top of the air outlet pipe (10).

4. The prefabricated photovoltaic substation according to claim 3, characterized in that: The absorption assembly comprises: a connecting frame (30), a connecting plate (31) and an absorption pad (34); the connecting plate (31) is connected to the air outlet pipe (10) in abutting relation; the connecting frame (30) is provided with a plurality of groups, which are respectively fixedly connected to both sides of the absorption pad (34); the absorption pad (34) is slidably connected to the inner wall of the air outlet pipe (10); and the side ends of the absorption pad (34) and the connecting frame (30) are both fixedly connected to the connecting plate (31).

5. The prefabricated photovoltaic substation according to claim 4, characterized in that: The top end of the connecting plate (31) is abutted and connected with a nut (35), the top end of the air outlet pipe (10) is fixedly connected with a locking seat (32), the side end of the locking seat (32) is fixedly connected with a locking shaft (33) that passes through the top end of the connecting plate (31), and the locking shaft (33) is threadedly connected to the inner wall of the nut (35).

6. The prefabricated photovoltaic substation according to claim 3, characterized in that: A recovery shell (20) is provided at the bottom of the open end of the guide tube (19), and a recovery pad (21) is supported and connected to the inner wall of the groove opened in the recovery shell (20), and a plurality of recovery tubes (25) are opened through the recovery pad (21).

7. The prefabricated photovoltaic substation according to claim 1, characterized in that: The refrigeration device (5) fixedly connected to the side end of the box (1) is in communication with the inner cavity of the box (1); the top end of the refrigeration device (5) is fixedly connected to a fan (7) via a connecting box (6); the side end of the fan (7) is in communication with the inner cavity of the air inlet pipe (2) via a connecting pipe (4); and the inner wall of the box (1) is fixedly connected to a control device (12).

8. The prefabricated photovoltaic substation according to claim 7, characterized in that: The inner wall of the box body (1) is fixedly connected to a return pipe (11) that is in communication with the refrigeration device (5); the outlet end of the return pipe (11) is fixedly connected to a truncated cone-shaped return head (13); the return head (13) is arranged at one end of the box body (1) away from the refrigeration device (5).

9. The prefabricated photovoltaic substation according to claim 1, characterized in that: The side end of the blocking plate (9) is fixedly connected to a fixed shaft (27) that penetrates the air intake pipe (2), the edge of the blocking plate (9) is fixedly connected to a plastic sealing ring (28), and the driver (3) fixedly connected to the fixed shaft (27) is fixedly connected to the side end of the air intake pipe (2).

10. The prefabricated photovoltaic substation according to claim 1, characterized in that: The blocking assembly comprises: a blocking plate (14), a telescopic rod (23) and a telescopic controller (24); the telescopic controller (24) is fixedly connected to the side end of the blocking plate (14) via the telescopic rod (23); the telescopic controller (24) is fixedly connected to the inner wall of the box (1); and the guide rails (22) slidably connected at the upper and lower ends of the blocking plate (14) are fixedly connected to the inner wall of the box (1).

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