Photovoltaic heat insulation and cooling device and box-type substation

Abstract

The utility model discloses a photovoltaic heat insulation cooling device and a box-type substation, and relates to the technical field of box-type substation corollary equipment. The photovoltaic heat insulation and cooling device comprises a heat dissipation assembly, and the heat dissipation assembly is arranged in the box-type substation. The air blower is used for blowing and cooling the interior of the box-type substation; the photovoltaic module is arranged on the top side of the outer part of the box-type substation through a mounting bracket; the sunlight shielding assembly is used for shielding direct sunlight radiation for the box-type substation and providing power for the heat dissipation assembly; wherein the mounting bracket comprises a stand column, a transverse steel beam, a first longitudinal steel beam and a second longitudinal steel beam; the plurality of vertical columns are respectively arranged on the front side and the rear side of the box-type substation; the transverse steel beams are erected on the stand columns. The first longitudinal steel beams and the second longitudinal steel beams are erected on the transverse steel beams. According to the technical scheme provided by the utility model, heat insulation and cooling can be effectively carried out on the box-type substation.

Description

Technical Field

[0001] This utility model relates to the technical field of supporting equipment for prefabricated substations, and in particular to a photovoltaic heat insulation and cooling device and a prefabricated substation. Background Technology

[0002] Prefabricated substations are locations in power systems where voltage and current are transformed, concentrated, and distributed. Since they are typically installed outdoors, direct sunlight and ambient temperature can easily cause the overall temperature of the substation to rise, especially during the hot summer months when excessively high temperatures significantly impact the lifespan of the internal transformer equipment. Therefore, there is an urgent need for a device that can effectively insulate and cool prefabricated substations.

[0003] It should be noted that the above content is only used to help understand the technical solution of this utility model, and does not represent an admission that the above content is prior art. Utility Model Content

[0004] The main purpose of this utility model is to propose a photovoltaic heat insulation and cooling device and a box-type substation, which aims to effectively insulate and cool the box-type substation.

[0005] To achieve the above objectives, this utility model proposes a photovoltaic heat insulation and cooling device for use in prefabricated substations;

[0006] Specifically, the photovoltaic heat insulation and cooling device includes:

[0007] A heat dissipation component is installed inside the prefabricated substation; it is used to cool the interior of the prefabricated substation by airflow.

[0008] A photovoltaic module is mounted on the external top side of the prefabricated substation via a mounting bracket; it is used to shield the prefabricated substation from direct sunlight and to provide power to the heat dissipation components.

[0009] The mounting bracket includes columns, transverse steel beams, a first longitudinal steel beam, and a second longitudinal steel beam; several columns are respectively arranged on the front and rear sides of the box-type substation; the transverse steel beams are erected on the columns; the first longitudinal steel beam and the second longitudinal steel beam are erected on the transverse steel beams.

[0010] The photovoltaic module includes a plurality of photovoltaic panels arranged in a rectangular array. Each row of photovoltaic panels is mounted on at least two first longitudinal steel beams. The photovoltaic panels and the first longitudinal steel beams are fixedly connected by first connectors. A second longitudinal steel beam is provided between two adjacent rows of photovoltaic panels. The second longitudinal steel beam is mounted with a second connector. The two adjacent rows of photovoltaic panels are fixedly connected by the second connectors.

[0011] In one embodiment, the first longitudinal steel beam includes a first plate and a second plate, which are connected to each other to form an L-shaped structure; the first plate is fixedly connected to the transverse steel beam, and the second plate is fixedly connected to the first connecting member.

[0012] Furthermore, the first longitudinal steel beam also includes a plurality of reinforcing ribs, which are triangular in structure connecting the first plate and the second plate; the plurality of reinforcing ribs are distributed at intervals along the length direction of the first longitudinal steel beam.

[0013] In one embodiment, the first connector includes a third plate, a fourth plate, and a fifth plate, which are sequentially connected to form a U-shaped structure; the fourth plate is fixedly connected to the second plate by a first bolt, and the third plate is fixedly connected to the photovoltaic panel by a second bolt.

[0014] In one embodiment, the second longitudinal steel beam includes a sixth plate, a seventh plate, and an eighth plate, which are sequentially connected to form a U-shaped structure; the sixth plate is fixedly connected to the transverse steel beam, and the eighth plate is fixedly connected to the second connecting member.

[0015] In one embodiment, the second connector includes a base plate and first pressing edges located on opposite sides of the base plate;

[0016] The base plate and the eighth plate are fixedly connected by a third bolt;

[0017] The first edge-pressing component includes a first edge-pressing plate and a second edge-pressing plate, the first edge-pressing plate and the second edge-pressing plate being connected to form an inverted L-shaped structure; the first edge-pressing plate is fixedly connected to the base plate component, and the second edge-pressing plate is used to adhere to the top of the photovoltaic panel;

[0018] The second connector further includes a second edge-pressing member, which is disposed between the edge of the base plate and the first edge-pressing member; the second edge-pressing member includes a third edge-pressing plate and a lifting drive device, wherein the third edge-pressing plate is located in the area below the second edge-pressing plate; the lifting drive device is used to drive the third edge-pressing plate to move closer to the photovoltaic panel, so that the third edge-pressing plate and the bottom of the photovoltaic panel are in contact with each other, thereby clamping the photovoltaic panel between the second edge-pressing plate and the third edge-pressing plate.

[0019] In one embodiment, the lifting drive device includes an adjusting bolt, which is threadedly connected to the base plate; the first end of the adjusting bolt is connected to the third pressure plate via a rotating block; and the second end of the adjusting bolt is provided with an adjusting part.

[0020] In one embodiment, the adjusting bolt is fitted with a spring member, and the two ends of the spring member abut against the rotating block and the base plate member, respectively.

[0021] In one embodiment, the prefabricated substation includes a housing for accommodating transformer equipment; the heat dissipation assembly includes a heat dissipation channel disposed inside the housing; the air inlet of the heat dissipation channel is disposed at the bottom of the housing, and an induced draft fan is disposed at the air inlet; the air outlet of the heat dissipation channel is disposed on the inner top side of the housing; a one-way vent is disposed on the inner bottom side of the heat dissipation channel and directly opposite the induced draft fan, the passage direction of the one-way vent pointing towards the induced draft fan.

[0022] In one embodiment, the interior of the housing is provided with a plurality of heat sinks, one end of which is connected to the transformer and the other end of which extends into the heat dissipation channel.

[0023] To achieve the above objectives, this utility model proposes a prefabricated substation, which includes the photovoltaic heat insulation and cooling device described in any of the above claims.

[0024] This utility model's technical solution employs a heat dissipation assembly and photovoltaic (PV) modules within a prefabricated substation. Specifically, the heat dissipation assembly cools the interior of the substation using airflow, while the PV modules provide shade from direct sunlight and power the heat dissipation assembly. The PV modules are installed using a mounting bracket, which includes columns, horizontal steel beams, a first longitudinal steel beam, and a second longitudinal steel beam, forming a canopy structure to secure the PV modules. The first longitudinal steel beams secure each row of PV panels using first connectors, while the second longitudinal steel beams secure adjacent rows of PV panels using second connectors, improving connectivity between rows and enhancing the overall robustness of the PV module. This ensures sufficient structural strength to withstand severe weather conditions such as strong winds and heavy rain. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of one embodiment of the photovoltaic heat insulation and cooling device provided by this utility model;

[0027] Figure 2 A second schematic diagram of an embodiment of the photovoltaic heat insulation and cooling device provided by this utility model;

[0028] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0030] Figure 5 A schematic diagram of the heat dissipation component in one embodiment of the photovoltaic heat insulation and cooling device provided by this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Heat dissipation component; 110. Heat dissipation channel; 111. Air inlet; 112. Air outlet; 120. Exhaust fan; 130. One-way vent; 140. Heat sink; 200. Photovoltaic module; 210. Photovoltaic panel; 300. Mounting bracket; 310. Column; 320. Horizontal steel beam; 330. First longitudinal steel beam; 331. First plate; 332. Second plate; 333. Reinforcing rib; 340. Second longitudinal steel beam; 341. Sixth plate; 342. Seventh plate; 343. Eighth plate; 350. First connector; 35 1. Third plate; 352. Fourth plate; 353. Fifth plate; 354. First bolt; 355. Second bolt; 360. Second connector; 361. Base plate; 362. First edge clamping piece; 3621. First edge clamping plate; 3622. Second edge clamping plate; 363. Second edge clamping piece; 3631. Third edge clamping plate; 3632. Lifting drive device; 3633. Adjusting bolt; 3634. Rotating block; 3635. Adjusting part; 3636. Spring; 364. Third bolt; 400. Box-type substation; 410. Box body;

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, it should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] Prefabricated substations are places in the power system where voltage and current of electrical energy are transformed, concentrated and distributed. Since prefabricated substations are generally installed outdoors, multiple factors such as direct sunlight and ambient temperature can easily cause the overall temperature of the prefabricated substation to rise. This is especially prominent during the high-temperature period in summer, when excessively high temperatures greatly affect the service life of its internal transformer equipment.

[0038] To address the aforementioned technical problems, this utility model proposes a photovoltaic heat insulation and cooling device.

[0039] Please see Figure 1-2 In one embodiment of this utility model, the photovoltaic heat insulation and cooling device is applied to a box-type substation;

[0040] Specifically, the photovoltaic heat insulation and cooling device includes;

[0041] Heat dissipation component 100 is installed inside the prefabricated substation 400; it is used to cool the interior of the prefabricated substation 400 by airflow.

[0042] Photovoltaic module 200 is mounted on the top side of the box-type substation 400 via mounting bracket 300; it is used to shield the box-type substation 400 from direct sunlight and to provide power to the heat dissipation component 100.

[0043] The mounting bracket 300 includes columns 310, transverse steel beams 320, a first longitudinal steel beam 330, and a second longitudinal steel beam 340; several columns 310 are respectively set on the front and rear sides of the box-type substation; the transverse steel beams 320 are erected on the columns 310; the first longitudinal steel beams 330 and the second longitudinal steel beams 340 are erected on the transverse steel beams 320.

[0044] The photovoltaic module 200 includes a plurality of photovoltaic panels 210 arranged in a rectangular array. Each row of photovoltaic panels 210 is mounted on at least two first longitudinal steel beams 330. The photovoltaic panels 210 and the first longitudinal steel beams 330 are fixedly connected by first connectors 350. A second longitudinal steel beam 340 is provided between two adjacent rows of photovoltaic panels 210. The second longitudinal steel beam 340 is mounted with a second connector 360. The two adjacent rows of photovoltaic panels 210 are fixedly connected by the second connectors 360.

[0045] The technical solution of this utility model adopts a heat dissipation component 100 and a photovoltaic component 200 in a box-type substation. Specifically, the heat dissipation component 100 is used to cool the interior of the box-type substation by airflow, and the photovoltaic component 200 is used to shield the box-type substation from direct sunlight and to provide power to the heat dissipation component 100. The photovoltaic component 200 is installed by a mounting bracket 300, which includes a column 310, a transverse steel beam 320, a first longitudinal steel beam 330, and a second longitudinal steel beam 340, so that the mounting bracket 300 forms a canopy structure to achieve the purpose of installing and fixing the photovoltaic component 200. The purpose of the first longitudinal steel beam 330 is to install and fix each row of photovoltaic panels 210 through the first connector 350, and the purpose of the second longitudinal steel beam 340 is to fix adjacent rows of photovoltaic panels 210 to each other through the second connector 360, thereby improving the connectivity between each row of photovoltaic panels 210, and thus improving the overall robustness of the photovoltaic module 200 composed of several photovoltaic panels 210, so as to ensure that the photovoltaic module 200 has sufficient connection strength to withstand severe weather such as strong winds and rain.

[0046] Specifically, see the attached document. Figure 3The first longitudinal steel beam 330 includes a first plate 331 and a second plate 332, which are connected to each other to form an L-shaped structure. The first plate 331 is fixedly connected to the transverse steel beam 320, and the second plate 332 is fixedly connected to the first connecting member 350. The first longitudinal steel beam 330 also includes a plurality of reinforcing ribs 333, which are triangularly connected to the first plate 331 and the second plate 332. The reinforcing ribs 333 are spaced apart along the length of the first longitudinal steel beam 330. This arrangement combines the first plate 331 and the second plate 332 to form an L-shaped structure, and the reinforcing ribs 333 enhance the connection strength between the first plate 331 and the second plate 332, ensuring that the first longitudinal steel beam 330 has sufficient bending strength and preventing deformation of the mounting bracket 300 during use.

[0047] Specifically, see the attached document. Figure 3 The first connecting member 350 includes a third plate 351, a fourth plate 352, and a fifth plate 353, which are sequentially connected to form a U-shaped structure. The fourth plate 352 is fixedly connected to the second plate 332 by a first bolt 354, and the third plate 351 is fixedly connected to the photovoltaic panel 210 by a second bolt 355. This arrangement combines the third plate 351, the fourth plate 352, and the fifth plate 353 to form a U-shaped structure, where the U-shaped cavity can accommodate the bolt heads of the first bolt 354 and the second bolt 355, allowing the first connecting member 350 to be connected to the first longitudinal steel beam 330 and the photovoltaic panel 210 using the first bolt 354 and the second bolt 355. The structure is simple and highly practical.

[0048] Specifically, see the attached document. Figure 4 The second longitudinal steel beam 340 includes a sixth plate 341, a seventh plate 342, and an eighth plate 343, which are sequentially connected to form a U-shaped structure. The sixth plate 341 is fixedly connected to the transverse steel beam 320, and the eighth plate 343 is fixedly connected to the second connecting member 360. This arrangement, combining the sixth plate 341, seventh plate 342, and eighth plate 343 to form a U-shaped structure, allows the U-shaped cavity to accommodate the bolt head of the third bolt 364, enabling the subsequent connection of the second connecting member 360 to the second longitudinal steel beam 340 using the third bolt 364. The structure is simple and highly practical.

[0049] Specifically, see the attached document. Figure 4The second connector 360 includes a base plate 361 and first edge clamping members 362 located on opposite sides of the base plate 361; the base plate 361 and the eighth plate 343 are fixedly connected by a third bolt 364; the first edge clamping member 362 includes a first edge clamping plate 3621 and a second edge clamping plate 3622, the first edge clamping plate 3621 and the second edge clamping plate 3622 are connected to form an inverted L-shaped structure; the first edge clamping plate 3621 is fixedly connected to the base plate 361, and the second edge clamping plate 3622 is used to adhere to the top of the photovoltaic panel 210; the second connector 360 also includes a second edge clamping member. 363, the second pressing member 363 is disposed between the edge of the bottom plate member 361 and the first pressing member 362; the second pressing member 363 includes a third pressing plate 3631 and a lifting drive device 3632, the third pressing plate 3631 is located in the area below the second pressing plate 3622; the lifting drive device 3632 is used to drive the third pressing plate 3631 to move closer to the photovoltaic panel 210, so that the third pressing plate 3631 and the bottom of the photovoltaic panel 210 are in contact with each other, thereby clamping the photovoltaic panel 210 between the second pressing plate 3622 and the third pressing plate 3631. With this configuration, the base plate 361 is fixedly connected to the eighth plate 343 to achieve the connection between the second connector 360 and the second longitudinal steel beam 340. Then, the photovoltaic panel 210 is clamped and fixed by the second pressure plate 3622 and the third pressure plate 3631. Since the first pressure plate 362 and the second pressure plate 363 are symmetrically arranged on opposite sides of the base plate 361, the two sets of first pressure plates 362 and second pressure plates 363 are combined to fix the photovoltaic panels 210 on both sides. That is, two adjacent rows of photovoltaic panels 210 can be connected to each other through the second connector 360, thereby improving the connectivity between each row of photovoltaic panels 210 and thus improving the overall firmness of the photovoltaic module 200 composed of several photovoltaic panels 210.

[0050] The lifting drive device 3632 can have various specific structures. In this embodiment, the lifting drive device 3632 includes an adjusting bolt 3633, which is threadedly connected to the base plate 361. The first end of the adjusting bolt 3633 is connected to the third pressure plate 3631 via a rotating block 3634. The second end of the adjusting bolt 3633 is provided with an adjusting part 3635. With this configuration, the operator can turn the adjusting part 3635 and rotate the adjusting bolt 3633 to adjust the height of the third pressure plate 3631, thereby ensuring that the third pressure plate 3631 and the bottom of the photovoltaic panel 210 are in close contact, thus ensuring the smooth implementation of the technical solution of this application. The structure is simple and practical.

[0051] Furthermore, a spring element 3636 is fitted onto the adjusting bolt 3633, with both ends of the spring element 3636 abutting against the rotating block 3634 and the base plate 361, respectively. This arrangement is to prevent the adjusting bolt 3633 from rotating during daily use, which would prevent the second connecting piece 360 ​​from effectively fixing to the photovoltaic panel 210. Therefore, a rotation locking device needs to be added to the adjusting bolt 3633. In this embodiment, the spring element 3636 is fitted into the adjusting bolt 3633. The elastic force of the spring element 3636 acts on the rotating block 3634 and the base plate 361, making it difficult for the distance between the rotating block 3634 and the base plate 361 to shrink due to the spring force of the spring element 3636. This prevents the adjusting bolt 3633 from rotating, which would reduce the distance between the rotating block 3634 and the base plate 361, thus preventing the third pressure plate 3631 from effectively adhering to the bottom of the photovoltaic panel 210.

[0052] As a preferred embodiment of the above embodiments, refer to the appendix. Figure 5 The prefabricated substation includes a housing 410 for accommodating transformer equipment; the heat dissipation assembly 100 includes a heat dissipation channel 110 disposed inside the housing 410; the air inlet 111 of the heat dissipation channel 110 is disposed at the bottom of the housing 410, and an exhaust fan 120 is disposed at the air inlet 111; the air outlet 112 of the heat dissipation channel 110 is disposed on the inner top side of the housing 410; a one-way vent 130 is disposed on the inner bottom side of the heat dissipation channel 110 and directly opposite the exhaust fan 120, and the passage direction of the one-way vent 130 is towards the exhaust fan 120. This configuration utilizes the exhaust fan 120 to draw in outside air. Guided by the heat dissipation channel 110, the gas flows to the inner top side of the housing 410. Then, the gas flows downwards through the transformer equipment. When the gas reaches the inner bottom side of the housing 410, it flows back into the heat dissipation channel 110 through the one-way vent 130, repeating the flow process to form an air circulation loop. During the flow of the gas through the transformer equipment, it carries away the heat, thus achieving the purpose of cooling the transformer equipment. The one-way vent 130 is equipped with a one-way valve to ensure that the gas flows along a preset trajectory under the guidance of the valve, ensuring the smooth implementation of the technical solution of this application. The power source for the exhaust fan 120 is mainly provided by the photovoltaic module 200.

[0053] Furthermore, the interior of the housing 410 is equipped with several heat sinks 140. One end of each heat sink 140 is connected to the transformer equipment, and the other end extends into the heat dissipation channel 110. This configuration utilizes the heat sinks 140 to accelerate heat dissipation from the transformer equipment. Simultaneously, extending the other end of the heat sinks 140 into the heat dissipation channel 110 allows the air flowing through the heat dissipation channel 110 to simultaneously cool the heat sinks 140, achieving two goals at once.

[0054] This embodiment also discloses a prefabricated substation, including the photovoltaic heat insulation and cooling device of any of the above embodiments. The specific structure of the photovoltaic heat insulation and cooling device can be referred to the above embodiments. Since this prefabricated substation adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated further here.

[0055] It should be noted that the photovoltaic heat insulation and cooling device and other contents of the box-type substation disclosed in this utility model are existing technologies and will not be described in detail here.

[0056] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any application of this utility model directly or indirectly in other related technical fields is included within the patent protection scope of this utility model.

Claims

1. A photovoltaic heat insulation and cooling device applied to a box-type substation, characterized in that, The photovoltaic heat insulation and cooling device comprises: a heat dissipation assembly arranged inside the box-type substation for air cooling of the inside of the box-type substation; a photovoltaic assembly arranged on the outside top side of the box-type substation by a mounting bracket for shielding the box-type substation from direct sunlight and providing power for the heat dissipation assembly; wherein the mounting bracket comprises upright columns, a horizontal steel beam, a first longitudinal steel beam and a second longitudinal steel beam; the upright columns are arranged on the front and back sides of the box-type substation respectively; the horizontal steel beam is arranged on the upright columns; the first longitudinal steel beam and the second longitudinal steel beam are arranged on the horizontal steel beam; the photovoltaic assembly comprises a plurality of photovoltaic panels arranged in a rectangular array, each row of the photovoltaic panels is arranged on at least two first longitudinal steel beams, and the photovoltaic panels and the first longitudinal steel beams are fixedly connected by first connecting pieces; the second longitudinal steel beam is arranged between adjacent two rows of the photovoltaic panels, the second longitudinal steel beam is provided with second connecting pieces, and adjacent two rows of the photovoltaic panels are fixedly connected by the second connecting pieces.

2. The photovoltaic heat shielding and cooling device according to claim 1, wherein: The first longitudinal steel beam comprises a first plate and a second plate, the first plate and the second plate are connected to each other to form an L-shaped structure; the first plate is fixedly connected with the horizontal steel beam, and the second plate is fixedly connected with the first connecting piece; and the first longitudinal steel beam further comprises a plurality of reinforcing ribs, the reinforcing ribs are connected to the first plate and the second plate in a triangular structure; the reinforcing ribs are spaced apart along the length direction of the first longitudinal steel beam.

3. The photovoltaic heat shielding and cooling device according to claim 2, wherein: The first connecting piece comprises a third plate, a fourth plate and a fifth plate, the third plate, the fourth plate and the fifth plate are sequentially connected to form a H-shaped structure; the fourth plate and the second plate are fixedly connected with each other by a first bolt, and the third plate and the photovoltaic panel are fixedly connected with each other by a second bolt.

4. The photovoltaic solar heat shield of claim 1, wherein: The second longitudinal steel beam comprises a sixth plate, a seventh plate and an eighth plate, the sixth plate, the seventh plate and the eighth plate are sequentially connected to form a H-shaped structure; the sixth plate is fixedly connected with the horizontal steel beam, and the eighth plate is fixedly connected with the second connecting piece.

5. The photovoltaic heat shielding and cooling device according to claim 4, wherein: The second connecting piece comprises a bottom plate and first pressing edges on opposite sides of the bottom plate; the bottom plate and the eighth plate are fixedly connected by a third bolt; the first pressing edge comprises a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate are connected to form an inverted L-shaped structure; the first pressing plate is fixedly connected with the bottom plate, and the second pressing plate is used for abutting against the top of the photovoltaic panel; The second connecting piece further comprises a second edge pressing piece arranged between the edge of the bottom plate and the first edge pressing piece; the second edge pressing piece comprises a third edge pressing plate and a lifting driving device, the third edge pressing plate is arranged below the second edge pressing plate; the lifting driving device is used for driving the third edge pressing plate to move close to the photovoltaic panel, so that the third edge pressing plate and the bottom of the photovoltaic panel are mutually attached, thereby clamping the photovoltaic panel between the second edge pressing plate and the third edge pressing plate.

6. The photovoltaic solar heat shield of claim 5, wherein: The lifting driving device comprises an adjusting bolt, the adjusting bolt is threadedly connected with the bottom plate; the first end of the adjusting bolt is connected with the third edge pressing plate through a rotating block; the second end of the adjusting bolt is provided with an adjusting part.

7. The photovoltaic solar heat shield of claim 6, wherein: The adjusting bolt is sleeved with a spring piece, the two ends of the spring piece are respectively abutted with the rotating block and the bottom plate.

8. The photovoltaic solar heat shield of claim 1, wherein: The box-type transformer substation comprises a box for accommodating a transformer device; the heat dissipation assembly comprises a heat dissipation channel arranged inside the box; an air inlet of the heat dissipation channel is arranged at the bottom of the box, and an air guide fan is arranged at the air inlet; an air outlet of the heat dissipation channel is arranged at the inner top side of the box; a one-way air hole is arranged at the inner bottom side of the heat dissipation channel and opposite to the air guide fan, and the passing direction of the one-way air hole is directed to the air guide fan.

9. The photovoltaic solar heat shield of claim 8, wherein: The inside of the box is provided with a plurality of heat dissipation fins, one end of the heat dissipation fin is connected with the transformer device, and the other end of the heat dissipation fin extends into the heat dissipation channel.

10. A box-type substation, characterized by: The box-type transformer substation comprises the photovoltaic heat insulation and cooling device according to any one of claims 1 to 9.

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