Outdoor box-type substation

Abstract

The invention relates to an outdoor box-type transformer substation, and relates to the technical field of smart power grids, the outdoor box-type transformer substation comprises a box body, a box door rotatably installed at the front side of the box body, and an electrical assembly fixedly installed in the box body, the left and right side surfaces of the box body are provided with heat dissipation ports, and the back side is fixedly provided with a heat dissipation box; middle rods are rotationally connected to the upper portions of the left vertical side face and the right vertical side face of the box body, protection plates are rotationally connected to the ends, away from the box body, of the middle rods, receding notches are formed in the bottom faces of the protection plates in the horizontal protection state, control pieces are arranged on the protection plates, and locking pieces are arranged on the box body. According to the device, when impurities accumulated on the protection plates need to be cleaned, the two protection plates can be conveniently driven to reversely turn to the vertical storage state through the control piece, at the moment, the impurities can naturally fall off or the ground can be conveniently and directly cleaned, and the maintenance convenience is improved.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to an outdoor prefabricated substation. Background Technology

[0002] Against the backdrop of the ongoing advancement of smart grid construction, prefabricated substations, as core equipment in the power transmission and distribution chain, are widely used in urban distribution network terminals, industrial park power supply, and outdoor distributed energy systems due to their advantages such as high integration, convenient installation, and small footprint. They not only need to achieve voltage level conversion from 10kV to 0.4kV, but also need to ensure the stable operation of electrical components such as load switches and fuses. Therefore, heat dissipation performance and outdoor adaptability have become core concerns in technical design. Especially in complex outdoor environments, prefabricated substations must simultaneously cope with temperature fluctuations and the intrusion of natural impurities; the rationality of their structural design directly affects the reliability of power grid supply and the service life of equipment.

[0003] The prefabricated substation disclosed in related technologies mainly consists of a sealed enclosure, a rotatable door, and built-in electrical components. These electrical components include core components such as oil-immersed transformers, load switches, fuses, and air circuit breakers, meeting the requirements for power distribution and protection functions. To address heat dissipation during equipment operation, grille-type ventilation openings are provided on the left and right sides of the enclosure, and a heat dissipation box with a built-in axial flow fan is fixedly installed on the rear side. The axial flow fan drives airflow, forming an internal and external gas circulation channel with the ventilation openings, accelerating heat dissipation and ensuring stable operation of the electrical components within the rated temperature range.

[0004] When the aforementioned prefabricated substations are used in outdoor areas with abundant vegetation, the top surface of the enclosure is typically flat or has a shallow slope, making it prone to the accumulation of fallen leaves, dead branches, dust, and other debris. This accumulation not only covers the potential heat dissipation area on the top surface, reducing the equipment's heat dissipation efficiency, but can also corrode the enclosure's outer shell due to long-term moisture buildup, affecting the insulation performance of electrical components. To avoid these problems, staff need to regularly clean the top surface. However, the top surface is usually about 2 meters above the ground, requiring climbing tools such as folding ladders for cleaning. This is not only cumbersome and time-consuming, but also poses safety risks associated with working at height, significantly reducing cleaning and maintenance efficiency and making it difficult to meet the long-term needs of complex outdoor environments, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an outdoor prefabricated substation that solves the problem in the above-mentioned related technologies that the top surface of the prefabricated box in outdoor areas with abundant vegetation is prone to the accumulation of impurities, which is cumbersome to clean and poses safety risks.

[0006] The outdoor prefabricated substation provided in this application adopts the following technical solution: An outdoor prefabricated substation includes a box body, a door rotatably mounted on the front of the box body, and electrical components fixedly mounted inside the box body. The box body has ventilation openings on its left and right sides and a heat dissipation box fixed to its back side. A central rod is rotatably connected to the upper part of each of the left and right vertical sides of the box body. A protective plate is rotatably connected to the end of the central rod away from the box body. The two protective plates can rotate with the central rods to a horizontal protective state where they abut against each other, and to a vertically retracted state where they abut against the left and right vertical sides of the box body. When the protective plate is in the horizontal protective state, a clearance notch is provided on its bottom surface. A control element is provided on the side edge of the protective plate facing the back of the box body, and a locking element is provided on the box body. The control element is used to drive the protective plate to rotate and adjust, and the locking element is used to limit and lock the protective plate in both the horizontal and vertically downward protective states.

[0007] By adopting the above technical solution, when used outdoors, the two protective plates can be switched to a horizontal protective state. With the shielding effect of the protective plates, fallen leaves, dead branches, dust and other impurities can be effectively prevented from accumulating on the top surface of the box. This prevents impurities from affecting heat dissipation efficiency or causing long-term moisture and corrosion of the box. It reduces the frequency of high-altitude cleaning with climbing tools, avoids the safety risks of high-altitude operations, and reduces the cumbersomeness and labor costs of maintenance operations. When impurities accumulate on the protective plates and need to be cleaned, the two protective plates can be easily driven to flip back to the vertical storage state through the control components. At this time, the impurities can fall off naturally or be easily cleaned directly on the ground, further improving the convenience of maintenance.

[0008] Optionally, the locking component includes a locking rod slidably mounted vertically on the left and right vertical sides of the housing, an adjusting block slidably mounted vertically on the left and right edges of the back side of the housing, and a connecting component disposed inside the housing. When the adjusting block slides up and down, it drives the locking rod to slide up and down and fix it through the connecting component. A locking protrusion is fixedly provided at the lower end of the locking rod, and a locking hook is fixedly provided on the top surface of the locking protrusion. When the protective plate is in the vertically retracted state, a locking cavity is opened on the side facing the housing, and a locking slot is opened on the top wall of the locking cavity. When the protective plate is in the vertically retracted state, the locking protrusion rotates into the locking cavity, and the locking hook is engaged in the locking slot after the locking rod moves up. When the protective plate is in the horizontal protective state, the locking rod can move up, and the outer peripheral surface of the upper end of the locking rod abuts against the sides of the two protective plates that are far apart from each other.

[0009] By adopting the above technical solution, the locking component uses a collaborative structure of adjusting block, connecting part, and locking rod. The locking rod can be moved synchronously by simply sliding the adjusting block up and down, achieving convenient locking of the protective plate in two states: when stored vertically, the locking protrusion rotates into the locking cavity, and the locking hook engages with the locking slot, achieving a stable and limited position of the protective plate; when used for horizontal protection, the locking rod moves upward and abuts against the side of the protective plate, forming a reliable lateral limit. The overall structure has strong linkage, is simple and efficient to operate, requires no additional complex fixing steps, and the locking method precisely adapts to both working states, ensuring that the protective plate is not easily loosened during transportation or use, thus improving the structural stability and safety of the equipment.

[0010] Optionally, an elastic snap-fit ​​element is provided on the outer periphery of the locking rod, and a positioning groove is provided on the outer side of the protective plate for the elastic snap-fit ​​element to snap into.

[0011] By adopting the above technical solution, the elastic locking component cooperates with the positioning groove to automatically lock and fix the locking rod when it moves to the corresponding locking position. This achieves position limiting of the locking rod without additional operation, effectively preventing accidental displacement that could unlock the protective plate. This design is simple in structure and reliable in locking, improving the stability of the locking mechanism without increasing operational complexity, and ensuring the continuous stability of the protective plate in both working states.

[0012] Optionally, the elastic snap-fit ​​component includes a compression spring and an arc-shaped protrusion. A placement groove is provided on the outer periphery of the locking rod for the compression spring and the arc-shaped protrusion to be inserted. The compression spring squeezes one side of the arc-shaped protrusion, causing a part of the arc-shaped protrusion to protrude from the opening of the placement groove. The outer surface of the protruding part of the arc-shaped protrusion is an arc surface, and the arc length corresponding to this arc surface is a minor arc.

[0013] By adopting the above technical solution, the compression spring provides a continuous elastic thrust to the arc-shaped protrusion, making it stably protrude from the placement groove to fit the positioning groove; the slightly curved surface design ensures both locking stability and allows the arc-shaped protrusion to retract smoothly when the locking rod is moved under force, thus achieving unlocking. The structure is simple and compact, wear-resistant and durable, balancing locking reliability and ease of operation, and improving the practical performance of the elastic locking component.

[0014] Optionally, a guide block is fixedly provided on the side of the locking rod facing the box body, and a protrusion is fixedly provided on the side of the adjusting block facing the box body; a first guide hole for the guide block to pass through is opened vertically along the upper edge of the left and right sides of the box body, and a second guide hole for the protrusion to pass through is opened vertically along the upper edge of the back side; the connecting member is a connecting rod whose two ends are fixedly connected to the inner sides of the guide block and the protrusion respectively.

[0015] By adopting the above technical solution, the guide block and the first guide hole, and the protrusion and the second guide hole respectively form precise guidance, ensuring smooth vertical sliding of the locking rod and the adjusting block; the connecting rod directly connects the guide block and the protrusion, realizing synchronous linkage between the two. The structure has efficient transmission and precise positioning, avoiding sliding deviation or jamming, ensuring smooth locking / unlocking operations, and improving the operational stability and service life of the locking mechanism.

[0016] Optionally, one end of the control component is a control rod rotatably connected to the protective plate facing the back side of the box, and the rotation surface of the control rod is parallel to the back side of the box; the control rod is an elastic telescopic rod whose length can be actively and elastically shortened, and a fixing plate is fixedly provided on the outer periphery of the end of the control rod away from the protective plate, and a fixing block is fixedly provided on the fixing plate; a fixing slot is provided on the bottom surface of the heat dissipation box; when the two protective plates are in a horizontal protective state and the control rod is in a vertical downward state, the fixing plate can rotate to a state of abutting against the bottom surface of the heat dissipation box, and the fixing block can be inserted into the fixing slot at this time.

[0017] By adopting the above technical solution, during horizontal protection, the control rod points vertically downwards, causing the fixing plate to abut against the bottom surface of the heat sink. The fixing block snaps into the fixing slot, locking the protective plate in place and enhancing the installation stability of the heat sink, preventing loosening due to equipment vibration. The overall structure is multifunctional and integrated, convenient to operate and reliable in locking, ensuring the stability of the protective plate while improving the connection strength and operational safety of the overall equipment structure.

[0018] Optionally, a first inclined surface is provided at the outer periphery of the fixing block, and a second inclined surface is provided at the opening edge of the fixing slot.

[0019] By adopting the above technical solution, the first and second inclined surfaces form a guiding fit, which guides the fixing block when it is inserted into the fixing slot, reducing the difficulty of alignment and making the snap-fit ​​process smoother and less strenuous. The inclined surface design also enhances the tightness of the fit after snap-fit, reducing the risk of loosening, which not only improves the convenience of operation, but also further ensures the reinforcement effect of the control rod on the protective plate and heat sink.

[0020] Optionally, an adjustment slot is provided on the bottom surface of the adjustment block; when the two protective plates are in a vertically retracted state and the control rod is in a vertically downward state, the fixing plate can be rotated to a position that abuts against the bottom surface of the adjustment block, and the fixing block can be inserted into the adjustment slot at this time.

[0021] By adopting the above technical solution, after the protective plate is retracted, the control rod points vertically downwards, causing the fixing plate to abut against the bottom surface of the adjusting block. The fixing block then engages with the adjusting slot, locking the protective plate in its retracted state and limiting the adjusting block to prevent accidental slippage that could unlock the locking rod. The elastic telescopic rod's properties ensure a tighter connection, allowing for secondary fixing without additional operations, making it suitable for bumpy transportation environments. This design links the control and locking components, resulting in a compact structure and reliable locking. It improves the structural stability of the equipment during transportation while maintaining ease of operation, preventing the protective plate from loosening or shifting.

[0022] Optionally, a third bevel is provided at the opening edge of the adjustment slot.

[0023] By adopting the above technical solution, the third inclined surface of the adjustable slot opening edge plays a guiding role, which can guide the fixed plug to be accurately aligned when it is inserted, reducing the difficulty of operation and making the snapping process smoother and less strenuous.

[0024] Optionally, an upward-facing airflow guide is fixed at the inner edge of the heat dissipation vent, which can block the heat dissipation vent when the protective plate is in a vertically retracted state.

[0025] By adopting the above technical solutions, the upward-facing air guide can guide the airflow upward during equipment use, optimize the airflow circulation efficiency between the heat dissipation vent and the heat dissipation box, and help the equipment dissipate heat. When the protective plate is stored vertically, it can block the heat dissipation vent, forming a double protection with the air guide to prevent dust, rainwater and other impurities from entering the box during transportation or storage, ensuring the safety of electrical components and taking into account both heat dissipation effect and protection reliability.

[0026] In summary, this application includes the following beneficial technical effects: In this application, when used outdoors, the two protective panels can be switched to a horizontal protective state. With the shielding effect of the protective panels, fallen leaves, dead branches, dust and other impurities can be effectively prevented from accumulating on the top surface of the box. This prevents impurities from affecting heat dissipation efficiency or causing long-term moisture and corrosion of the box. It reduces the frequency of high-altitude cleaning with climbing tools, avoids the safety risks of high-altitude operations, and reduces the cumbersomeness and labor costs of maintenance operations. When impurities accumulate on the protective panels and need to be cleaned, the two protective panels can be easily driven to flip back to the vertical storage state through the control components. At this time, the impurities can fall off naturally or be easily cleaned directly on the ground, further improving the convenience of maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the installation and assembly of the heat sink in an embodiment of this application; Figure 3This is a schematic diagram illustrating the installation and assembly of the protective plate according to an embodiment of this application; Figure 4 This is a partial cross-sectional view of the protective plate installation and assembly in an embodiment of this application; Figure 5 This is a partial structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 6 This is a partial cross-sectional structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle; Figure 8 This is a partial cross-sectional view of the control component installation and assembly in an embodiment of this application; Figure 9 yes Figure 8 Enlarged schematic diagram of part B in the middle; Figure 10 This is a partial cross-sectional view of the structure of the control lever and the adjustment block in an embodiment of this application. Figure 11 yes Figure 10 An enlarged schematic diagram of section C.

[0028] In the diagram, 1. Housing; 11. Vent; 12. Airflow deflector; 13. Heat sink; 131. Fixing slot; 132. Second slope; 14. First guide hole; 15. Second guide hole; 2. Door; 3. Protective components; 31. Intermediate rod; 32. Protective plate; 321. Clearance notch; 322. Locking cavity; 323. Locking slot; 324. Positioning groove; 4. Control components; 41. Control rod; 42. 43. Fixing plate; 431. Fixing insert; 432. First inclined surface; 5. Locking component; 51. Locking rod; 513. Locking protrusion; 514. Locking hook; 515. Guide block; 516. Placement slot; 52. Adjusting block; 527. Protrusion; 528. Adjusting slot; 529. Third inclined surface; 53. Connecting component; 531. Connecting rod; 54. Elastic snap-fit ​​component; 541. Compression spring; 542. Arc-shaped protrusion. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] Example: Reference Figure 1 and Figure 2 An outdoor box-type substation includes a box body 1, a box door 2 rotatably installed on the front side of the box body 1, and electrical components (not shown in the figure) fixedly installed inside the box body 1. Heat dissipation vents 11 are provided on the left and right sides of the box body 1, and a heat dissipation box 13 is fixed on the back side, wherein an axial flow fan (not shown in the figure) is installed inside the heat dissipation box 13. During the application of this prefabricated substation, the airflow is driven by an axial flow fan, which, together with the heat dissipation vent 11, forms an internal and external gas circulation channel for the enclosure 1, accelerating heat dissipation and ensuring that the electrical components operate stably within the rated temperature range.

[0031] Reference Figure 2 and Figure 3 The outer side of the box 1 is provided with a protective component 3, wherein the protective component 3 includes two intermediate rods 31 rotatably connected to the upper part of the left and right vertical sides of the box 1, and the ends of the intermediate rods 31 away from the box 1 are rotatably connected with protective plates 32. The two protective plates 32 can rotate with the intermediate rods 31 to a horizontal protective state that abuts against each other, and rotate away from each other to a vertical storage state that abuts against the left and right vertical sides of the box 1. When the protective plate 32 is in the horizontal protective state, a clearance notch 321 is provided on the bottom surface. A control element 4 is provided on the side edge of the protective plate 32 facing the back of the box 1, and a locking element 5 is provided on the box 1; wherein the control element 4 is used to drive the protective plate 32 to rotate and adjust, and the locking element 5 is used to limit and lock the protective plate 32 in the horizontal protection state and the vertical downward state; when the two protective plates 32 are in the horizontal protection state, elastic abutment pads made of rubber are fixed on the sides that are close to each other (not shown in the figure). When used in prefabricated substations, the two protective plates 32 are adjusted to a horizontal protective state. At this time, the clearance notch 321 is used to reduce the contact area between the protective plate 32 and the top surface of the enclosure 1 when it is in a horizontal protective state. This improves the heat dissipation performance while ensuring the protection of the top of the enclosure 1. When transporting the prefabricated substation, the two protective plates 32 are adjusted to a vertical storage state and locked to improve space utilization.

[0032] Reference Figure 4 A guide shroud 12 with an upward opening is fixed at the inner edge of the heat dissipation vent 11; when the protective plate 32 is in a vertical storage state (i.e., during factory transportation), the protective plate 32 can block the outer side opening of the heat dissipation vent 11.

[0033] Reference Figure 4 , Figure 5 and Figure 6 The locking component 5 includes a locking rod 51 that slides vertically on the left and right vertical sides of the box body 1, an adjusting block 52 that slides vertically on the left and right edges of the back side of the box body 1, and a connecting component 53 located inside the box body 1. When the adjusting block 52 slides up and down, it drives the locking rod 51 to slide up and down and fix it through the connecting component 53. The lower end of the locking rod 51 is fixedly provided with a locking protrusion 511, and the top surface of the locking protrusion 511 is fixedly provided with a locking hook 512. When the protective plate 32 is in the vertical storage state, a locking cavity 322 is opened on the side facing the box body 1, and a locking groove 323 is opened on the top wall of the locking cavity 322. A guide block 513 is fixedly provided on the side of the locking rod 51 facing the box 1, and a protrusion 521 is fixedly provided on the side of the adjusting block 52 facing the box 1; a first guide hole 14 for the guide block 513 to pass through is opened vertically on the left and right sides of the box 1, and a second guide hole 15 for the protrusion 521 to pass through is opened vertically on the back side; the connecting member 53 is a connecting rod 531 whose two ends are fixedly connected to the inner sides of the guide block 513 and the protrusion 521 respectively. When the protective plate 32 is in a vertically retracted state, the locking protrusion 511 rotates into the locking cavity 322, and the locking hook 512 is engaged in the locking slot 323 after the locking rod 51 moves upward, thereby locking the protective plate 32 in this state. When the protective plate 32 is in a horizontal protective state, the locking rod 51 can move upward, and the outer circumferential surface of the upper end of the locking rod 51 abuts against the sides of the two protective plates 32 that are far apart from each other, thereby locking the protective plate 32.

[0034] Reference Figure 6 and Figure 7 The outer periphery of the locking rod 51 is provided with an elastic snap-fit ​​member 54, and the outer side of the protective plate 32 is provided with a positioning groove 324 for the elastic snap-fit ​​member 54 to snap into. When the locking rod 51 moves upward and the protective plate 32 is in a certain state, the elastic snap-fit ​​member 54 is snapped into the corresponding positioning groove 324, thereby fixing the locking rod 51 in the upward state. The elastic snap-fit ​​component 54 includes a compression spring 541 and an arc-shaped protrusion 542. The outer periphery of the locking rod 51 is provided with a placement groove 514 for the compression spring 541 and the arc-shaped protrusion 542 to be inserted. The compression spring 541 squeezes one side of the arc-shaped protrusion 542, causing a part of the arc-shaped protrusion 542 to protrude from the opening of the placement groove 514. The outer surface of the protruding part of the arc-shaped protrusion 542 is an arc surface, and the arc length corresponding to this arc surface is a minor arc.

[0035] Reference Figure 8 and Figure 9 One end of the control component 4 is rotatably connected to the protective plate 32 facing the back side of the box 1. The rotation surface of the control rod 41 is parallel to the back side of the box 1. The control rod 41 is an elastic telescopic rod whose length can be actively and elastically shortened and which has a spring (not shown in the figure) inside. The control rod 41 is a conventional telescopic structure, which will not be described in detail here. A fixing plate 42 is fixed on the outer periphery of the end of the control lever 41 away from the protective plate 32, wherein a fixing block 43 is fixed on the fixing plate 42, and a fixing slot 131 is opened on the bottom surface of the heat dissipation box 13; wherein a first inclined surface 431 is provided at the outer periphery of the fixing block 43, and a second inclined surface 132 is provided at the opening edge of the fixing slot 131. When the two protective plates 32 are in a horizontal protective state and the control rod 41 is in a vertical downward state, the fixing plate 42 can be rotated to abut against the bottom surface of the heat sink 13. At this time, the fixing block 43 can be inserted into the fixing slot 131 under the elastic force of the elastic telescopic rod, thereby enhancing the installation stability of the heat sink 13.

[0036] Reference Figure 10 and Figure 11 An adjustment slot 522 is provided on the bottom surface of the adjustment block 52, and a third inclined surface 523 is provided at the opening edge of the adjustment slot 522. When the two protective plates 32 are in the vertically retracted state and the control rod 41 is in the vertically downward state, the fixing plate 42 can rotate to abut against the bottom surface of the adjustment block 52. Under the elastic pull of the control rod 41, the fixing insert 43 can be inserted into the adjustment slot 522 along the third inclined surface 523, so as to further lock the adjustment block 52 in this state (that is, the state in which the locking rod 51 locks the protective plate 32) using the fixing insert 43.

[0037] The implementation principle of this application embodiment is as follows: Transportation State (Vertical Storage): The two protective plates 32 are rotated back-to-back using the control lever 41 until they abut against the side of the housing 1, at which point the heat dissipation vent 11 is blocked by the protective plates 32. Then, the adjusting block 52 moves upward, causing the locking lever 51 to move upward via the connecting rod 531. The locking protrusion 511 rotates into the locking cavity 322 of the protective plate 32, and the locking hook 512 engages with the locking slot 323. The elastic snap-fit ​​member 54 engages with the positioning groove 324 to fix the locking lever 51, completing the locking of the protective plate 32. At this point, the control lever 41 is vertically downward, the fixing plate 42 abuts against the bottom surface of the adjusting block 52, and the fixing insert 43 engages with the adjusting slot 522, further locking the adjusting block 52 and the locking lever 51, improving transportation safety.

[0038] Operating state (horizontal protection): The two protective plates 32 are rotated towards each other to a horizontal contact using the control lever 41, with the clearance notch 321 providing space for heat dissipation. After the adjusting block 52 moves the locking lever 51 upward, its upper end abuts against the side of the protective plate 32. The elastic snap-fit ​​piece 54 is used to engage with the positioning groove 324 to fix the locking lever 51, thus limiting the position of the protective plate 32 in this state. At this time, the control lever 41 is vertically downward, and the fixing plate 42 abuts against the bottom surface of the heat sink 13. The fixing insert 43 is engaged into the fixing slot 131 under the elastic force of the control lever 41, thereby enhancing the stability of the heat sink 13.

[0039] State switching: Applying force to the adjusting block 52 and moving it down will cause the locking rod 51 to move down via the connecting rod 531. At this time, the elastic snap-fit ​​54 is subjected to force and disengages from the positioning groove 324, and the locking rod 51 moves down to unlock the protective plate 32. The angle of the protective plate 32 can be adjusted by rotating the control rod 41 (elastic telescopic rod) to complete the switching between storage and protection states, adapting to different scenario needs.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An outdoor prefabricated substation, comprising a prefabricated box (1), a door (2) rotatably mounted on the front side of the prefabricated box (1), and electrical components fixedly mounted inside the prefabricated box (1), wherein heat dissipation vents (11) are provided on the left and right sides of the prefabricated box (11), and a heat dissipation box (13) is fixedly mounted on the back side; characterized in that, The upper part of the left and right vertical sides of the box (1) is rotatably connected to a middle rod (31). The end of the middle rod (31) away from the box (1) is rotatably connected to a protective plate (32). The two protective plates (32) can rotate with the middle rod (31) to a horizontal protective state where they abut against each other, and to a vertical storage state where they abut against the left and right vertical sides of the box (1). When the protective plate (32) is in a horizontal protective state, a clearance notch (321) is provided on the bottom surface. The protective plate (32) is provided with a control element (4) on the side edge facing the back of the box (1). The box (1) is provided with a locking element (5). The control element (4) is used to drive the protective plate (32) to rotate and adjust. The locking element (5) is used to limit and lock the protective plate (32) in the horizontal protective state and the vertical downward state.

2. An outdoor prefabricated substation according to claim 1, characterized in that, The locking component (5) includes a locking rod (51) that slides vertically on the left and right vertical sides of the box (1), an adjusting block (52) that slides vertically on the left and right edges of the back side of the box (1), and a connecting component (53) located inside the box (1). When the adjusting block (52) slides up and down, it drives the locking rod (51) to slide up and down and fix it through the connecting component (53). The lower end of the locking rod (51) is fixed with a locking protrusion (511), and the top surface of the locking protrusion (511) is fixed with a locking hook (512); when the protective plate (32) is in the vertical storage state, a locking cavity (322) is opened on the side facing the box (1), and a locking slot (323) is opened on the top wall of the locking cavity (322); When the protective plate (32) is in a vertically retracted state, the locking protrusion (511) rotates into the locking cavity (322), and the locking hook (512) is engaged in the locking slot (323) after the locking rod (51) moves up. When the protective plate (32) is in a horizontal protective state, the locking rod (51) can move up, and the outer peripheral surface of the upper end of the locking rod (51) abuts against the sides of the two protective plates (32) that are far apart from each other.

3. An outdoor prefabricated substation according to claim 2, characterized in that, An elastic snap-fit ​​member (54) is provided on the outer periphery of the locking rod (51), and a positioning groove (324) is provided on the outer side of the protective plate (32) for the elastic snap-fit ​​member (54) to be snapped into.

4. An outdoor prefabricated substation according to claim 3, characterized in that, The elastic snap-fit ​​component (54) includes a compression spring (541) and an arc-shaped protrusion (542). The outer periphery of the locking rod (51) is provided with a placement groove (514) for the compression spring (541) and the arc-shaped protrusion (542) to be placed. The compression spring (541) squeezes one side of the arc-shaped protrusion (542) so that a part of the arc-shaped protrusion (542) protrudes from the opening of the placement groove (514). The outer surface of the protruding part of the arc-shaped protrusion (542) is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

5. An outdoor prefabricated substation according to claim 2, characterized in that, The locking rod (51) is fixed with a guide block (513) on the side facing the box (1), and the adjusting block (52) is fixed with a protrusion block (521) on the side facing the box (1). The box body (1) has a first guide hole (14) for the guide block (513) to pass through vertically on the upper edge of the left and right sides, and a second guide hole (15) for the protrusion block (521) to pass through vertically on the upper edge of the back side; the connecting member (53) is a connecting rod (531) whose two ends are fixedly connected to the inner sides of the guide block (513) and the protrusion block (521) respectively.

6. An outdoor prefabricated substation according to claim 5, characterized in that, The control component (4) has a control rod (41) that is rotatably connected to the protective plate (32) facing the back side of the box (1) at one end, and the rotation surface of the control rod (41) is parallel to the back side of the box (1). The control rod (41) is an elastic telescopic rod whose length can be actively and elastically shortened. A fixing plate (42) is fixed on the outer periphery of the end of the control rod (41) away from the protective plate (32). A fixing block (43) is fixed on the fixing plate (42). A fixing slot (131) is opened on the bottom surface of the heat dissipation box (13). When the two protective plates (32) are in a horizontal protective state and the control rod (41) is in a vertical downward state, the fixing plate (42) can be rotated to a position that abuts against the bottom surface of the heat sink (13), and the fixing block (43) can be inserted into the fixing slot (131) at this time.

7. An outdoor prefabricated substation according to claim 6, characterized in that, The outer periphery of the fixing block (43) is provided with a first inclined surface (431), and the opening edge of the fixing slot (131) is provided with a second inclined surface (132).

8. An outdoor prefabricated substation according to claim 6, characterized in that, The bottom surface of the adjustment block (52) is provided with an adjustment slot (522); when the two protective plates (32) are in a vertically retracted state and the control rod (41) is in a vertically downward state, the fixing plate (42) can be rotated to a state that abuts against the bottom surface of the adjustment block (52), and the fixing plug (43) can be inserted into the adjustment slot (522) at this time.

9. An outdoor prefabricated substation according to claim 8, characterized in that, The adjustment slot (522) has a third inclined surface (523) at the edge of its opening.

10. An outdoor prefabricated substation according to claim 1, characterized in that, The heat dissipation port (11) has an upward-facing guide shroud (12) fixed at the inner edge of the opening. When the protective plate (32) is in a vertically retracted state, it can block the heat dissipation port (11).

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